Jazz Pharmaceuticals plcfalse2025Q2000123252412/31FALSEFALSEFALSEFALSEhttp://fasb.org/us-gaap/2025#OtherAssetsNoncurrenthttp://fasb.org/us-gaap/2025#OtherLiabilitiesNoncurrenthttp://fasb.org/us-gaap/2025#OtherAssetsNoncurrenthttp://fasb.org/us-gaap/2025#OtherLiabilitiesNoncurrent00xbrli:sharesiso4217:USDiso4217:USDxbrli:sharesjazz:segmentxbrli:pureutr:Ratejazz:litigationCasejazz:patent00012325242025-01-012025-06-3000012325242025-07-3000012325242025-04-012025-06-3000012325242025-06-3000012325242024-12-310001232524jazz:ProductAndServicesProductSalesNetOfDeductionsMember2025-04-012025-06-300001232524jazz:ProductAndServicesProductSalesNetOfDeductionsMember2024-04-012024-06-300001232524jazz:ProductAndServicesProductSalesNetOfDeductionsMember2025-01-012025-06-300001232524jazz:ProductAndServicesProductSalesNetOfDeductionsMember2024-01-012024-06-300001232524jazz:ProductAndServicesRoyaltiesAndContractRevenueMember2025-04-012025-06-300001232524jazz:ProductAndServicesRoyaltiesAndContractRevenueMember2024-04-012024-06-300001232524jazz:ProductAndServicesRoyaltiesAndContractRevenueMember2025-01-012025-06-300001232524jazz:ProductAndServicesRoyaltiesAndContractRevenueMember2024-01-012024-06-3000012325242024-04-012024-06-3000012325242024-01-012024-06-300001232524us-gaap:CommonStockMember2024-12-310001232524jazz:EuroDeferredSharesMember2024-12-310001232524jazz:CapitalRedemptionReserveMember2024-12-310001232524us-gaap:AdditionalPaidInCapitalMember2024-12-310001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-12-310001232524us-gaap:RetainedEarningsMember2024-12-310001232524us-gaap:CommonStockMember2025-01-012025-03-310001232524us-gaap:AdditionalPaidInCapitalMember2025-01-012025-03-3100012325242025-01-012025-03-310001232524jazz:PerformanceBasedRestrictedStockUnitsRSUsMemberus-gaap:CommonStockMember2025-01-012025-03-310001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-01-012025-03-310001232524us-gaap:RetainedEarningsMember2025-01-012025-03-310001232524us-gaap:CommonStockMember2025-03-310001232524jazz:EuroDeferredSharesMember2025-03-310001232524jazz:CapitalRedemptionReserveMember2025-03-310001232524us-gaap:AdditionalPaidInCapitalMember2025-03-310001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-03-310001232524us-gaap:RetainedEarningsMember2025-03-3100012325242025-03-310001232524us-gaap:CommonStockMember2025-04-012025-06-300001232524us-gaap:AdditionalPaidInCapitalMember2025-04-012025-06-300001232524us-gaap:RetainedEarningsMember2025-04-012025-06-300001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-04-012025-06-300001232524us-gaap:CommonStockMember2025-06-300001232524jazz:EuroDeferredSharesMember2025-06-300001232524jazz:CapitalRedemptionReserveMember2025-06-300001232524us-gaap:AdditionalPaidInCapitalMember2025-06-300001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-06-300001232524us-gaap:RetainedEarningsMember2025-06-300001232524us-gaap:CommonStockMember2023-12-310001232524jazz:EuroDeferredSharesMember2023-12-310001232524jazz:CapitalRedemptionReserveMember2023-12-310001232524us-gaap:AdditionalPaidInCapitalMember2023-12-310001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2023-12-310001232524us-gaap:RetainedEarningsMember2023-12-3100012325242023-12-310001232524us-gaap:CommonStockMember2024-01-012024-03-310001232524us-gaap:AdditionalPaidInCapitalMember2024-01-012024-03-3100012325242024-01-012024-03-310001232524jazz:PerformanceBasedRestrictedStockUnitsRSUsMemberus-gaap:CommonStockMember2024-01-012024-03-310001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-01-012024-03-310001232524us-gaap:RetainedEarningsMember2024-01-012024-03-310001232524us-gaap:CommonStockMember2024-03-310001232524jazz:EuroDeferredSharesMember2024-03-310001232524jazz:CapitalRedemptionReserveMember2024-03-310001232524us-gaap:AdditionalPaidInCapitalMember2024-03-310001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-03-310001232524us-gaap:RetainedEarningsMember2024-03-3100012325242024-03-310001232524us-gaap:CommonStockMember2024-04-012024-06-300001232524us-gaap:AdditionalPaidInCapitalMember2024-04-012024-06-300001232524jazz:CapitalRedemptionReserveMember2024-04-012024-06-300001232524us-gaap:RetainedEarningsMember2024-04-012024-06-300001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-04-012024-06-300001232524us-gaap:CommonStockMember2024-06-300001232524jazz:EuroDeferredSharesMember2024-06-300001232524jazz:CapitalRedemptionReserveMember2024-06-300001232524us-gaap:AdditionalPaidInCapitalMember2024-06-300001232524us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-06-300001232524us-gaap:RetainedEarningsMember2024-06-3000012325242024-06-300001232524jazz:ChimerixMember2025-04-212025-04-210001232524us-gaap:ForeignExchangeForwardMemberus-gaap:NondesignatedMember2025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:NondesignatedMember2024-12-310001232524us-gaap:InterestRateSwapMemberus-gaap:DesignatedAsHedgingInstrumentMember2025-06-300001232524us-gaap:InterestRateSwapMemberus-gaap:DesignatedAsHedgingInstrumentMember2024-12-310001232524jazz:FiveCustomersMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2025-01-012025-06-300001232524jazz:ExpressScriptsMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2025-01-012025-06-300001232524jazz:ASDSpecialtyHealthcareLLCMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2025-01-012025-06-300001232524jazz:McKessonCorporationMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2025-01-012025-06-300001232524jazz:FiveCustomersMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2024-01-012024-12-310001232524jazz:ExpressScriptsMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2024-01-012024-12-310001232524jazz:ASDSpecialtyHealthcareLLCMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2024-01-012024-12-310001232524jazz:McKessonCorporationMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:AccountsReceivableMember2024-01-012024-12-310001232524jazz:ChimerixMember2025-04-210001232524us-gaap:CommonStockMemberjazz:ChimerixMember2025-04-212025-04-210001232524jazz:OutstandingEquityAwardsMemberjazz:ChimerixMember2025-04-212025-04-210001232524us-gaap:CashMember2025-06-300001232524us-gaap:BankTimeDepositsMember2025-06-300001232524us-gaap:MoneyMarketFundsMember2025-06-300001232524us-gaap:CashMember2024-12-310001232524us-gaap:BankTimeDepositsMember2024-12-310001232524us-gaap:MoneyMarketFundsMember2024-12-310001232524us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-06-300001232524us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-06-300001232524us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMember2025-06-300001232524us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2024-12-310001232524us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-12-310001232524us-gaap:MoneyMarketFundsMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-310001232524us-gaap:BankTimeDepositsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-06-300001232524us-gaap:BankTimeDepositsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-06-300001232524us-gaap:BankTimeDepositsMemberus-gaap:FairValueMeasurementsRecurringMember2025-06-300001232524us-gaap:BankTimeDepositsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2024-12-310001232524us-gaap:BankTimeDepositsMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-12-310001232524us-gaap:BankTimeDepositsMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-310001232524us-gaap:ForeignExchangeForwardMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:FairValueMeasurementsRecurringMember2025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2024-12-310001232524us-gaap:ForeignExchangeForwardMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-12-310001232524us-gaap:ForeignExchangeForwardMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-310001232524us-gaap:InterestRateContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:FairValueMeasurementsRecurringMember2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2024-12-310001232524us-gaap:InterestRateContractMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-12-310001232524us-gaap:InterestRateContractMemberus-gaap:FairValueMeasurementsRecurringMember2024-12-310001232524us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-06-300001232524us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-06-300001232524us-gaap:FairValueMeasurementsRecurringMember2025-06-300001232524us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2024-12-310001232524us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2024-12-310001232524us-gaap:FairValueMeasurementsRecurringMember2024-12-310001232524us-gaap:FairValueInputsLevel2Memberjazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2024-12-310001232524us-gaap:FairValueInputsLevel2Memberjazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2025-06-300001232524us-gaap:FairValueInputsLevel2Memberjazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2024-12-310001232524us-gaap:FairValueInputsLevel2Memberjazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2025-06-300001232524us-gaap:FairValueInputsLevel2Memberjazz:SeniorNotesDue2029Memberjazz:SeniorSecuredDebtMember2024-12-310001232524us-gaap:FairValueInputsLevel2Memberjazz:SeniorNotesDue2029Memberjazz:SeniorSecuredDebtMember2025-06-300001232524us-gaap:FairValueInputsLevel2Memberjazz:TrancheB2DollarTermLoanMemberjazz:TermLoanMember2025-06-300001232524us-gaap:FairValueInputsLevel2Memberjazz:TrancheB2DollarTermLoanMemberjazz:TermLoanMember2024-12-310001232524srt:MaximumMember2025-01-012025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:NondesignatedMember2025-04-012025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:NondesignatedMember2024-04-012024-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:NondesignatedMember2025-01-012025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:NondesignatedMember2024-01-012024-06-300001232524jazz:TermLoanMember2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMember2025-04-012025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMember2024-04-012024-06-300001232524us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMember2025-01-012025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:CashFlowHedgingMember2024-01-012024-06-300001232524us-gaap:InterestRateContractMemberus-gaap:OtherCurrentAssetsMemberus-gaap:DesignatedAsHedgingInstrumentMember2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:OtherCurrentAssetsMemberus-gaap:DesignatedAsHedgingInstrumentMember2024-12-310001232524us-gaap:InterestRateContractMemberus-gaap:OtherNoncurrentAssetsMemberus-gaap:DesignatedAsHedgingInstrumentMember2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:OtherNoncurrentAssetsMemberus-gaap:DesignatedAsHedgingInstrumentMember2024-12-310001232524us-gaap:ForeignExchangeForwardMemberus-gaap:OtherCurrentAssetsMemberus-gaap:NondesignatedMember2025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:OtherCurrentAssetsMemberus-gaap:NondesignatedMember2024-12-310001232524us-gaap:InterestRateContractMemberus-gaap:AccruedLiabilitiesMemberus-gaap:DesignatedAsHedgingInstrumentMember2025-06-300001232524us-gaap:InterestRateContractMemberus-gaap:AccruedLiabilitiesMemberus-gaap:DesignatedAsHedgingInstrumentMember2024-12-310001232524us-gaap:ForeignExchangeForwardMemberus-gaap:AccruedLiabilitiesMemberus-gaap:NondesignatedMember2025-06-300001232524us-gaap:ForeignExchangeForwardMemberus-gaap:AccruedLiabilitiesMemberus-gaap:NondesignatedMember2024-12-310001232524srt:ProFormaMember2025-06-300001232524srt:ProFormaMember2024-12-310001232524jazz:GWPharmaceuticalsPlcMember2025-06-300001232524jazz:GWPharmaceuticalsPlcMember2024-12-310001232524us-gaap:DevelopedTechnologyRightsMember2025-01-012025-06-300001232524us-gaap:DevelopedTechnologyRightsMember2025-06-300001232524us-gaap:DevelopedTechnologyRightsMember2024-12-310001232524jazz:ManufacturingContractsMember2025-06-300001232524jazz:ManufacturingContractsMember2024-12-310001232524us-gaap:TrademarksMember2025-06-300001232524us-gaap:TrademarksMember2024-12-310001232524jazz:ManufacturingContractsMember2025-01-012025-06-300001232524us-gaap:TrademarksMember2025-01-012025-06-300001232524us-gaap:MachineryAndEquipmentMember2025-06-300001232524us-gaap:MachineryAndEquipmentMember2024-12-310001232524us-gaap:LandAndBuildingMember2025-06-300001232524us-gaap:LandAndBuildingMember2024-12-310001232524us-gaap:SoftwareAndSoftwareDevelopmentCostsMember2025-06-300001232524us-gaap:SoftwareAndSoftwareDevelopmentCostsMember2024-12-310001232524us-gaap:LeaseholdImprovementsMember2025-06-300001232524us-gaap:LeaseholdImprovementsMember2024-12-310001232524us-gaap:ConstructionInProgressMember2025-06-300001232524us-gaap:ConstructionInProgressMember2024-12-310001232524us-gaap:ComputerEquipmentMember2025-06-300001232524us-gaap:ComputerEquipmentMember2024-12-310001232524us-gaap:FurnitureAndFixturesMember2025-06-300001232524us-gaap:FurnitureAndFixturesMember2024-12-310001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2025-06-300001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2024-12-310001232524jazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2025-06-300001232524jazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2024-12-310001232524jazz:SeniorNotesDue2029Memberus-gaap:ConvertibleDebtMember2025-06-300001232524jazz:SeniorNotesDue2029Memberus-gaap:ConvertibleDebtMember2024-12-310001232524jazz:TermLoanMember2024-12-310001232524jazz:TwoThousandTwentyOneCreditAgreementDollarTermLoanMemberus-gaap:LineOfCreditMember2025-01-012025-01-310001232524jazz:JazzInvestmentsILimitedMember2025-06-300001232524jazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2024-09-300001232524jazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2025-04-012025-06-300001232524jazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2025-01-012025-06-300001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2024-04-012024-06-300001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2025-04-012025-06-300001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2025-01-012025-06-300001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2024-01-012024-06-300001232524jazz:ExchangeableSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2024-08-152024-08-150001232524jazz:ExchangeableSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2024-08-150001232524jazz:ExchangeableSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2024-04-012024-06-300001232524jazz:ExchangeableSeniorNotesDue2024Memberus-gaap:ConvertibleDebtMember2024-01-012024-06-300001232524jazz:TeamstersAndGEHALawsuitsMember2020-06-182020-06-2300012325242025-04-072025-04-070001232524jazz:AvadelPharmaceuticalsPlcLawsuitMember2021-05-310001232524jazz:AvadelPharmaceuticalsPlcLawsuitMember2021-05-130001232524jazz:AvadelPharmaceuticalsPlcLawsuitMember2023-02-242023-02-240001232524jazz:AvadelPharmaceuticalsPlcLawsuitMember2022-06-070001232524jazz:AvadelPharmaceuticalsPlcLawsuitMember2024-08-272024-08-270001232524jazz:AvadelPharmaceuticalsPlcLawsuitMember2022-07-212022-07-210001232524jazz:LupinLawsuitMember2021-06-300001232524jazz:LupinLawsuitMember2021-07-310001232524jazz:LupinLawsuitMember2021-07-012021-07-310001232524jazz:XywavMemberjazz:LupinLawsuitMember2021-06-012021-06-300001232524jazz:LupinLawsuitMember2022-06-222022-06-220001232524jazz:LupinLawsuitMember2023-02-152023-02-150001232524jazz:TevaLawsuitMember2023-02-012023-02-280001232524jazz:TevaLawsuitMember2023-03-310001232524jazz:TevaLawsuitMember2023-03-012023-03-310001232524jazz:DefitelioPatentLitigationMember2025-04-162025-04-160001232524jazz:July2024ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2024-07-310001232524jazz:November2016ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2024-07-300001232524jazz:July2024ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2025-04-012025-06-300001232524jazz:July2024ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2025-01-012025-06-300001232524jazz:November2016ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2024-04-012024-06-300001232524jazz:November2016ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2024-01-012024-06-300001232524jazz:July2024ShareRepurchaseProgramMemberjazz:OrdinarySharesMember2025-06-300001232524us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2024-12-310001232524us-gaap:AccumulatedTranslationAdjustmentMember2024-12-310001232524us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2025-01-012025-06-300001232524us-gaap:AccumulatedTranslationAdjustmentMember2025-01-012025-06-300001232524us-gaap:AccumulatedGainLossNetCashFlowHedgeParentMember2025-06-300001232524us-gaap:AccumulatedTranslationAdjustmentMember2025-06-300001232524jazz:ExchangeableSeniorNotesDue2026Memberus-gaap:ConvertibleDebtMember2024-07-310001232524jazz:ExchangeableSeniorNotesDue2030Memberus-gaap:ConvertibleDebtMember2024-07-310001232524us-gaap:EquityUnitPurchaseAgreementsMember2025-04-012025-06-300001232524us-gaap:EquityUnitPurchaseAgreementsMember2024-04-012024-06-300001232524us-gaap:EquityUnitPurchaseAgreementsMember2025-01-012025-06-300001232524us-gaap:EquityUnitPurchaseAgreementsMember2024-01-012024-06-300001232524jazz:XywavMember2025-04-012025-06-300001232524jazz:XywavMember2024-04-012024-06-300001232524jazz:XywavMember2025-01-012025-06-300001232524jazz:XywavMember2024-01-012024-06-300001232524jazz:XyremMember2025-04-012025-06-300001232524jazz:XyremMember2024-04-012024-06-300001232524jazz:XyremMember2025-01-012025-06-300001232524jazz:XyremMember2024-01-012024-06-300001232524jazz:EpidiolexEpidyolexMember2025-04-012025-06-300001232524jazz:EpidiolexEpidyolexMember2024-04-012024-06-300001232524jazz:EpidiolexEpidyolexMember2025-01-012025-06-300001232524jazz:EpidiolexEpidyolexMember2024-01-012024-06-300001232524jazz:SativexMember2025-04-012025-06-300001232524jazz:SativexMember2024-04-012024-06-300001232524jazz:SativexMember2025-01-012025-06-300001232524jazz:SativexMember2024-01-012024-06-300001232524jazz:TotalNeuroscienceMember2025-04-012025-06-300001232524jazz:TotalNeuroscienceMember2024-04-012024-06-300001232524jazz:TotalNeuroscienceMember2025-01-012025-06-300001232524jazz:TotalNeuroscienceMember2024-01-012024-06-300001232524jazz:RylazeEnrylazeMember2025-04-012025-06-300001232524jazz:RylazeEnrylazeMember2024-04-012024-06-300001232524jazz:RylazeEnrylazeMember2025-01-012025-06-300001232524jazz:RylazeEnrylazeMember2024-01-012024-06-300001232524jazz:ZepzelcaMember2025-04-012025-06-300001232524jazz:ZepzelcaMember2024-04-012024-06-300001232524jazz:ZepzelcaMember2025-01-012025-06-300001232524jazz:ZepzelcaMember2024-01-012024-06-300001232524jazz:DefitelioDefibrotideMember2025-04-012025-06-300001232524jazz:DefitelioDefibrotideMember2024-04-012024-06-300001232524jazz:DefitelioDefibrotideMember2025-01-012025-06-300001232524jazz:DefitelioDefibrotideMember2024-01-012024-06-300001232524jazz:VyxeosMember2025-04-012025-06-300001232524jazz:VyxeosMember2024-04-012024-06-300001232524jazz:VyxeosMember2025-01-012025-06-300001232524jazz:VyxeosMember2024-01-012024-06-300001232524jazz:ZiiheraMember2025-04-012025-06-300001232524jazz:ZiiheraMember2024-04-012024-06-300001232524jazz:ZiiheraMember2025-01-012025-06-300001232524jazz:ZiiheraMember2024-01-012024-06-300001232524jazz:TotalOncologyMember2025-04-012025-06-300001232524jazz:TotalOncologyMember2024-04-012024-06-300001232524jazz:TotalOncologyMember2025-01-012025-06-300001232524jazz:TotalOncologyMember2024-01-012024-06-300001232524jazz:OtherProductsMember2025-04-012025-06-300001232524jazz:OtherProductsMember2024-04-012024-06-300001232524jazz:OtherProductsMember2025-01-012025-06-300001232524jazz:OtherProductsMember2024-01-012024-06-300001232524jazz:HighSodiumAGOxybateProductRoyaltyRevenueMember2025-04-012025-06-300001232524jazz:HighSodiumAGOxybateProductRoyaltyRevenueMember2024-04-012024-06-300001232524jazz:HighSodiumAGOxybateProductRoyaltyRevenueMember2025-01-012025-06-300001232524jazz:HighSodiumAGOxybateProductRoyaltyRevenueMember2024-01-012024-06-300001232524jazz:OtherRoyaltyAndContractRevenuesMember2025-04-012025-06-300001232524jazz:OtherRoyaltyAndContractRevenuesMember2024-04-012024-06-300001232524jazz:OtherRoyaltyAndContractRevenuesMember2025-01-012025-06-300001232524jazz:OtherRoyaltyAndContractRevenuesMember2024-01-012024-06-300001232524country:US2025-04-012025-06-300001232524country:US2024-04-012024-06-300001232524country:US2025-01-012025-06-300001232524country:US2024-01-012024-06-300001232524srt:EuropeMember2025-04-012025-06-300001232524srt:EuropeMember2024-04-012024-06-300001232524srt:EuropeMember2025-01-012025-06-300001232524srt:EuropeMember2024-01-012024-06-300001232524jazz:OtherCountriesMember2025-04-012025-06-300001232524jazz:OtherCountriesMember2024-04-012024-06-300001232524jazz:OtherCountriesMember2025-01-012025-06-300001232524jazz:OtherCountriesMember2024-01-012024-06-300001232524jazz:ExpressScriptsMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2025-04-012025-06-300001232524jazz:ExpressScriptsMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2024-04-012024-06-300001232524jazz:ExpressScriptsMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2025-01-012025-06-300001232524jazz:ExpressScriptsMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2024-01-012024-06-300001232524jazz:ASDSpecialtyHealthcareLLCMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2025-04-012025-06-300001232524jazz:ASDSpecialtyHealthcareLLCMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2024-04-012024-06-300001232524jazz:ASDSpecialtyHealthcareLLCMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2025-01-012025-06-300001232524jazz:ASDSpecialtyHealthcareLLCMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2024-01-012024-06-300001232524jazz:McKessonCorporationMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2025-04-012025-06-300001232524jazz:McKessonCorporationMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2024-04-012024-06-300001232524jazz:McKessonCorporationMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2025-01-012025-06-300001232524jazz:McKessonCorporationMemberus-gaap:CustomerConcentrationRiskMemberus-gaap:RevenueFromContractWithCustomerMember2024-01-012024-06-300001232524srt:MinimumMember2025-01-012025-06-300001232524us-gaap:SellingGeneralAndAdministrativeExpensesMember2025-04-012025-06-300001232524us-gaap:SellingGeneralAndAdministrativeExpensesMember2024-04-012024-06-300001232524us-gaap:SellingGeneralAndAdministrativeExpensesMember2025-01-012025-06-300001232524us-gaap:SellingGeneralAndAdministrativeExpensesMember2024-01-012024-06-300001232524us-gaap:ResearchAndDevelopmentExpenseMember2025-04-012025-06-300001232524us-gaap:ResearchAndDevelopmentExpenseMember2024-04-012024-06-300001232524us-gaap:ResearchAndDevelopmentExpenseMember2025-01-012025-06-300001232524us-gaap:ResearchAndDevelopmentExpenseMember2024-01-012024-06-300001232524us-gaap:CostOfSalesMember2025-04-012025-06-300001232524us-gaap:CostOfSalesMember2024-04-012024-06-300001232524us-gaap:CostOfSalesMember2025-01-012025-06-300001232524us-gaap:CostOfSalesMember2024-01-012024-06-30

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 

FORM 10-Q

(Mark One)

☒			Quarterly report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended June 30, 2025

or

☐			Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from              to             

Commission File Number: 001-33500

JAZZ PHARMACEUTICALS PUBLIC LIMITED COMPANY

(Exact name of registrant as specified in its charter) 

Ireland			98-1032470
(State or other jurisdiction of incorporation or organization)			(I.R.S. Employer Identification No.)

Fifth Floor, Waterloo Exchange,

Waterloo Road, Dublin 4, Ireland D04 E5W7

011-353-1-634-7800

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class			Trading Symbol(s)			Name of each exchange on which registered
Ordinary shares, nominal value $0.0001 per share			JAZZ			The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer

☒

Accelerated filer

☐

Non-accelerated filer

☐

Smaller reporting company

☐

Emerging growth company

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

---

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes ☐ No ☒

As of July 30, 2025, 60,658,809 ordinary shares of the registrant, nominal value $0.0001 per share, were outstanding.

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

QUARTERLY REPORT ON FORM 10-Q FOR THE QUARTER ENDED JUNE 30, 2025

INDEX

 

						Page
PART I – FINANCIAL INFORMATION
			Defined Terms and Products			3
Item 1.			Financial Statements			8
			Condensed Consolidated Balance Sheets – June 30, 2025 and December 31, 2024			8
			Condensed Consolidated Statements of Income (Loss) – Three and Six Months Ended June 30, 2025 and 2024			9
			Condensed Consolidated Statements of Comprehensive Income (Loss) – Three and Six Months Ended June 30, 2025 and 2024			10
			Condensed Consolidated Statements of Shareholders’ Equity – Three and Six Months Ended June 30, 2025 and 2024			11
			Condensed Consolidated Statements of Cash Flows – Six Months Ended June 30, 2025 and 2024			13
			Notes to Condensed Consolidated Financial Statements			14
Item 2.			Management’s Discussion and Analysis of Financial Condition and Results of Operations			36
Item 3.			Quantitative and Qualitative Disclosures About Market Risk			52
Item 4.			Controls and Procedures			53
PART II – OTHER INFORMATION
Item 1.			Legal Proceedings			54
Item 1A.			Risk Factors			54
Item 2.			Unregistered Sales of Equity Securities and Use of Proceeds			61
Item 6.			Exhibits			62
SIGNATURES						63

2

---

Table of Contents

Defined Terms and Products

Defined terms

We use several terms in this Form 10-Q, including but not limited to those that are finance, regulation and disease-state related as well as names of other companies, which are given below.

Term			Description
2024 Notes			1.50% exchangeable senior notes due 2024
2026 Notes			2.00% exchangeable senior notes due 2026
2030 Notes			3.125% exchangeable senior notes due 2030
Aetna			Aetna Inc.
AFL Plan Lawsuit			On July 31, 2020, a class action lawsuit was filed in the United States District Court for the Southern District of New York by the A.F. of L.-A.G.C. Building Trades Welfare Plan on behalf of itself and all others similarly situated, against Jazz Pharmaceuticals plc
AG			authorized generic
ALL			acute lymphoblastic leukemia
Almaject			Almaject Inc., Alvogen, Inc., and Alvogen PB Research and Development LLC
Amended Credit Agreement			Credit Agreement amended to include the Repricing Amendment No. 1, the Repricing Amendment No. 2 and Amendment No. 3
Amended Revolving Credit Facility			Revolving credit facility amended to increase the Initial Revolving Credit Facility to $885.0 million and extend the maturity date
Amendment No. 3			amendment to the Credit Agreement entered into by Jazz Lux in November 2024
AML			acute myeloid leukemia
Amneal			Amneal Pharmaceuticals LLC
ANDA			abbreviated new drug application
API			active pharmaceutical ingredient
ASD			ASD Specialty Healthcare LLC
ASU			Accounting Standards Update
Avadel			Avadel Pharmaceuticals plc
BCBS			Blue Cross and Blue Shield Association
BCBS Defendants			Roxane Laboratories, Inc., Hikma Pharmaceuticals USA Inc., Eurohealth (USA), Inc., Hikma Pharmaceuticals plc, Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals Inc., and Lupin Inc.
BCBS Lawsuit			On June 17, 2020, a class action lawsuit was filed in the United States District Court for the Northern District of Illinois by BCBS against Company Defendants
BLA			Biologics License Application
BTC			biliary tract cancers
Chimerix			Chimerix, Inc.
Chimerix Acquisition			our acquisition of Chimerix on April 21, 2025
Chimerix Common Stock			the common stock, par value $0.001 per share, of Chimerix
Chimerix Shareholder Litigation			two suits filed in the Supreme Court of the State of New York, County of New York, by purported Chimerix shareholders against Chimerix and its Board of Directors, but which do not name any Jazz Pharmaceuticals parties
Chimerix Transaction Litigation			the Rosenthal Lawsuit as well as the Chimerix Shareholder Litigation
CHMP			Committee for Medicinal Products for Human Use
City of Providence Defendants			Jazz Pharmaceuticals plc, and Roxane Laboratories, Inc., West-Ward Pharmaceuticals Corp., Hikma Labs Inc., Hikma Pharmaceuticals USA Inc., and Hikma Pharmaceuticals plc
CMS			U.S. Centers for Medicare & Medicaid Services
CODM			chief operating decision maker
COG			Children’s Oncology Group
Company Defendants			Jazz Pharmaceuticals plc, Jazz Pharmaceuticals, Inc., and Jazz Pharmaceuticals Ireland Limited

3

---

Table of Contents

Term			Description
Credit Agreement			Credit Agreement entered into on May 5, 2021, by and among us, Jazz Lux, and certain of our other subsidiaries, as borrowers, the lenders and issuing banks from time to time party thereto, Bank of America, N.A., as administrative agent and U.S. Bank Trust Company, National Association, as collateral trustee
DDI			drug-drug interaction
Defendants			Express Scripts, Inc., Express Scripts Holding Company, Express Scripts Specialty Distribution Services, Inc., Curascript, Inc. d/b/a Curascript, S.D., Priority Healthcare Distribution, Inc. d/b/a Curascript SD and Curascript Specialty Distribution SD, Caring Voice Coalition, and Adira Foundation (collectively with the Company Defendants)
Dollar Term Loan			our former seven-year $3.1 billion term loan B facility under the Credit Agreement
DS			Dravet syndrome
EC			European Commission
EDS			excessive daytime sleepiness
EEA			European Economic Area
Epidiolex ANDA Filers			Teva Pharmaceuticals, Inc.; Padagis US LLC; Apotex Inc.; API Pharma Tech LLC and InvaGen Pharmaceuticals, Inc.; Lupin Limited; Taro Pharmaceutical Industries Ltd.; Zenara Pharma Private Limited and Biophore Pharma, Inc.; MSN Laboratories Pvt. Ltd. and MSN Pharmaceuticals, Inc.; Alkem Laboratories Ltd.; and Ascent Pharmaceuticals, Inc.
ESPP			employee stock purchase plan
ESSDS			Express Scripts Specialty Distribution Services, Inc.
EU			European Union
Euro Term Loan			our now repaid seven-year €625.0 million term loan B facility under the Credit Agreement
Exchangeable Senior Notes			our 2026 Notes and 2030 Notes
Fair value step-up expense			the acquisition accounting inventory fair value step-up expense
FASB			Financial Accounting Standards Board
FDA			U.S. Food and Drug Administration
Finance Act			the Finance (No. 2) Act 2023
FTC			Federal Trade Commission
GEA			gastroesophageal adenocarcinoma
GEHA Lawsuit			Class action lawsuits filed on June 23, 2020 against the Company Defendants and the BCBS Defendants by Government Employees Health Association Inc. in the United States District Court for the Northern District of Illinois
GW			GW Pharmaceuticals plc
GW Acquisition			our acquisition of GW Pharmaceuticals plc in May 2021
Hikma			Hikma Pharmaceuticals PLC
HSCT			post-hematopoietic stem-cell transplantation
IFNα			interferon alpha
IH			idiopathic hypersomnia
IM			intramuscular
Initial Revolving Credit Facility			our five-year $500.0 million revolving credit facility under the Credit Agreement entered into in May 2021
IPR&D			in-process research and development
IRA			Inflation Reduction Act of 2022
Jazz Investments			Jazz Investments I Limited
Jazz Lux			Jazz Financing Lux S.à.r.l.
KRAS			Kirsten rat sarcoma virus
LBL			lymphoblastic lymphoma
LGS			Lennox-Gastaut syndrome
Lupin			Lupin Inc.
McKesson			McKesson Corporation
MDS			Myelodysplastic Syndrome

4

---

Table of Contents

Term			Description
MWT			Maintenance of Wakefulness Test
NDA			new drug application
New Repurchase Program			our share repurchase program announced on July 31, 2024
NHS			U.K. National Health Service
ODE			Orphan Drug Exclusivity in the U.S.
OECD			Organisation for Economic Co-operation and Development
Old Repurchase Program			our share repurchase program authorized by our board of directors in November 2016
Orange Book			FDA’s publication “Approved Drug Products with Therapeutic Equivalence Evaluations”
Par			Par Pharmaceutical, Inc.
PBMs			pharmacy benefit managers
PDUFA			Prescription Drug User Fee Act
PharmaMar			Pharma Mar, S.A.
Pillar Two			the OECD framework proposal to implement a global minimum tax rate of 15% for large multinational corporations on a jurisdiction-by-jurisdiction basis
Pinetree			Pinetree Acquisition Sub, Inc., an indirect, wholly-owned subsidiary of Jazz Pharmaceuticals plc
PRSUs			Performance-based restricted stock units
PRV			Priority Review Voucher
R&D			research and development
R/R			relapsed/refractory
Recommendation Statement			Chimerix's Schedule 14D-9 Solicitation/Recommendation Statement
Redx			Redx Pharma plc
REMS			risk evaluation and mitigation strategy
Repricing Amendment No.1			amendment to the Credit Agreement entered into by Jazz Lux in January 2024
Repricing Amendment No.2			amendment to the Credit Agreement entered into by Jazz Lux in July 2024
RK Pharma			RK Pharma, Inc., Apicore US LLC, Archis Pharma LLC, Vgyaan Pharmaceuticals LLC
Roche			F. Hoffmann-La Roche Ltd
Rosenthal Lawsuit			a lawsuit filed in the Supreme Court of the State of New York, County of Chemung, by David Rosenthal, purportedly on behalf of Chimerix Shareholders
RSUs			restricted stock units
sBLA			supplemental Biologics License Application
SCLC			small cell lung cancer
SEC			U.S. Securities and Exchange Commission
Section 232			Section 232 of the Trade Expansion Act of 1962
Secured Notes			our issued $1.5 billion in aggregate principal amount of 4.375% senior secured notes, due 2029
Self-Insured Schools Lawsuit			On August 14, 2020, a class action lawsuit was filed in the United States District Court for the Southern District of New York by the Self-Insured Schools of California on behalf of itself and all others similarly situated, against the Company Defendants, as well as Hikma Pharmaceuticals plc, Eurohealth (USA) Inc., Hikma Pharmaceuticals USA, Inc., West-Ward Pharmaceuticals Corp., Roxane Laboratories, Inc., Amneal Pharmaceuticals LLC, Endo International, plc, Endo Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals Inc., Lupin Inc., Sun Pharmaceutical Industries Ltd., Sun Pharmaceutical Holdings USA, Inc., Sun Pharmaceutical Industries, Inc., Ranbaxy Laboratories Ltd., Teva Pharmaceutical Industries Ltd., Watson Laboratories, Inc., Wockhardt Ltd., Morton Grove Pharmaceuticals, Inc., Wockhardt USA LLC, Mallinckrodt plc, and Mallinckrodt LLC
sNDA			supplemental New Drug Application
Sumitomo			Sumitomo Pharma Co., Ltd
sVOD			severe VOD
T-DXd			trastuzumab deruxtecan

5

---

Table of Contents

Term			Description
Tender Offer Documents			our Tender Offer Statement together with the Recommendation Statement
Teva			Teva Pharmaceuticals, Inc.
Tranche B-1 Dollar Term Loans			upon entry into the Repricing Amendment No.1, the then outstanding Dollar Term Loan was refinanced into a new tranche of U.S. dollar term loans
Tranche B-2 Dollar Term Loans			upon entry into the Repricing Amendment No.2, the then outstanding Tranche B-1 Dollar Term Loans were refinanced into a new tranche of U.S. dollar term loans
TSC			tuberous sclerosis complex
U.S.			United States of America
U.S. GAAP			U.S. generally accepted accounting principles
UFCW Defendants			Jazz Pharmaceuticals Ireland Ltd., Jazz Pharmaceuticals, Inc., Roxane Laboratories, Inc., Hikma Pharmaceuticals plc, Eurohealth (USA), Inc. and West-Ward Pharmaceuticals Corp.
UFCW Lawsuit			On June 30, 2020, a class action lawsuit was filed in the United States District Court for the Northern District of Illinois by UFCW Local 1500 Welfare Fund on behalf of itself and all others similarly situated, against the UFCW Defendants
UHS Lawsuit			On March 18, 2021, United Healthcare filed a lawsuit in the United States District Court for the District of Minnesota against the Company Defendants, Hikma Pharmaceuticals plc, Roxane Laboratories, Inc., Hikma Pharmaceuticals USA Inc., Eurohealth (USA) Inc., Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., and Lupin Pharmaceuticals, Inc.
United Healthcare			United Healthcare Services, Inc.
USPTO			U.S. Patent and Trademark Office
VOD			veno-occlusive disease
Werewolf			Werewolf Therapeutics, Inc.
Zepzelca ANDA Filers			Sandoz Inc., InvaGen Pharmaceuticals, Inc., CIPLA USA, Inc. CIPLA (EU) Limited, CIPLA Limited, Zydus Lifesciences Global FZE, Zydus Pharmaceuticals (USA) Inc., Zydus Lifesciences Limited, RK Pharma, Inc., Apicore US LLC, Archis Pharma LLC, Vgyaan Pharmaceuticals LLC, MSN Pharmaceuticals Inc., and MSN Laboratories PVT. LTD.
Zymeworks			Zymeworks Inc.

    

Products

The brand names of our products, our delivery devices and certain of our product candidates and their associated generic names are given below.

Term			Description
CombiPlex			CombiPlex® (delivery technology platform)
Defitelio			Defitelio® (defibrotide sodium), Defitelio® (defibrotide)
dordaviprone			Dordaviprone (ONC201)
Epidiolex			Epidiolex® (cannabidiol) oral solution, Epidyolex® (the trade name in Europe and other countries outside the U.S. for Epidiolex)
Rylaze			Rylaze® (asparaginase erwinia chrysanthemi (recombinant)-rywn), Enrylaze® (the trade name in Europe and other countries outside the U.S. and Canada for Rylaze)
Sativex			Sativex® (nabiximols) oral solution
Suvecaltamide			Suvecaltamide (JZP385)
Vyxeos			Vyxeos® (daunorubicin and cytarabine) liposome for injection, Vyxeos® liposomal 44 mg/100 mg powder for concentrate for solution for infusion
Xyrem			Xyrem® (sodium oxybate) oral solution
Xywav			Xywav® (calcium, magnesium, potassium, and sodium oxybates) oral solution
Zepzelca			Zepzelca® (lurbinectedin)
Ziihera			Ziihera® (zanidatamab-hrii)

We own or have rights to various copyrights, trademarks, and trade names used in our business in the U.S. and/or other countries, including the following: Jazz Pharmaceuticals®, Xywav® (calcium, magnesium, potassium, and sodium oxybates) oral solution, Xyrem® (sodium oxybate) oral solution, Epidiolex® (cannabidiol) oral solution, Epidyolex® (the trade name in Europe and other countries outside the U.S. for Epidiolex), Rylaze® (asparaginase erwinia chrysanthemi (recombinant)-rywn),

6

---

Table of Contents

Enrylaze® (the trade name in Europe and other countries outside the U.S. and Canada for Rylaze), Zepzelca® (lurbinectedin), Defitelio® (defibrotide sodium), Defitelio® (defibrotide), Vyxeos® (daunorubicin and cytarabine) liposome for injection, Vyxeos® liposomal 44 mg/100 mg powder for concentrate for solution for infusion, CombiPlex®, Sativex® (nabiximols) oral solution and Ziihera®  (zanidatamab-hrii).

This Quarterly Report on Form 10-Q also includes trademarks, service marks and trade names of other companies. Trademarks, service marks and trade names appearing in this Quarterly Report on Form 10‑Q are the property of their respective owners.

7

---

Table of Contents

PART I – FINANCIAL INFORMATION

 

Item 1.Financial Statements

JAZZ PHARMACEUTICALS PLC

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands)

(Unaudited)

			June 30, 2025						December 31, 2024
ASSETS
Current assets:
Cash and cash equivalents			$	1,189,880					$	2,412,864
Investments			480,000						580,000
Accounts receivable, net of allowances			714,004						716,765
Inventories			504,989						480,445
Prepaid expenses			164,000						177,411
Other current assets			297,560						261,543
Total current assets			3,350,433						4,629,028
Property, plant and equipment, net			184,975						173,413
Operating lease assets			63,082						53,582
Intangible assets, net			4,768,987						4,755,695
Goodwill			1,843,974						1,716,323
Deferred tax assets, net			602,903						560,245
Deferred financing costs			8,516						9,489
Other non-current assets			121,271						114,482
Total assets			$	10,944,141					$	12,012,257
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable			$	89,366					$	77,869
Accrued liabilities			874,811						910,947
Current portion of long-term debt			1,028,478						31,000
Income taxes payable			78,550						18,757
Total current liabilities			2,071,205						1,038,573
Long-term debt, less current portion			4,335,616						6,077,640
Operating lease liabilities, less current portion			55,107						38,938
Deferred tax liabilities, net			682,123						676,736
Other non-current liabilities			93,731						86,614
Commitments and contingencies (Note 10)
Shareholders’ equity:
Ordinary shares			6						6
Non-voting euro deferred shares			55						55
Capital redemption reserve			473						473
Additional paid-in capital			4,000,280						3,913,542
Accumulated other comprehensive loss			(485,768)						(947,667)
Retained earnings			191,313						1,127,347
Total shareholders’ equity			3,706,359						4,093,756
Total liabilities and shareholders’ equity			$	10,944,141					$	12,012,257

The accompanying notes are an integral part of these condensed consolidated financial statements.

8

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

(In thousands, except per share amounts)

(Unaudited)

 

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Revenues:
Product sales, net			$	985,571					$	964,144					$	1,824,989					$	1,806,246
Royalties and contract revenues			60,141						59,681						118,564						119,562
Total revenues			1,045,712						1,023,825						1,943,553						1,925,808
Operating expenses:
Cost of product sales (excluding amortization of acquired developed technologies)			116,268						109,902						220,888						205,389
Selling, general and administrative			358,399						338,523						872,412						690,235
Research and development			189,972						220,734						370,624						443,581
Intangible asset amortization			162,103						155,223						316,551						310,953
Acquired in-process research and development			905,362						—						905,362						10,000
Total operating expenses			1,732,104						824,382						2,685,837						1,660,158
Income (loss) from operations			(686,392)						199,443						(742,284)						265,650
Interest expense, net			(47,363)						(62,023)						(101,069)						(128,139)
Foreign exchange gain (loss)			(1,799)						507						(2,012)						(1,186)
Income (loss) before income tax benefit and equity in loss of investees			(735,554)						137,927						(845,365)						136,325
Income tax benefit			(17,170)						(30,653)						(34,982)						(18,984)
Equity in loss of investees			86						12						628						1,359
Net income (loss)			$	(718,470)					$	168,568					$	(811,011)					$	153,950
Net income (loss) per ordinary share:
Basic			$	(11.74)					$	2.68					$	(13.28)					$	2.45
Diluted			$	(11.74)					$	2.49					$	(13.28)					$	2.35
Weighted-average ordinary shares used in per share calculations - basic			61,194						62,882						61,087						62,710
Weighted-average ordinary shares used in per share calculations - diluted			61,194						69,625						61,087						69,684

The accompanying notes are an integral part of these condensed consolidated financial statements.

9

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands)

(Unaudited)

 

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Net income (loss)			$	(718,470)					$	168,568					$	(811,011)					$	153,950
Other comprehensive income (loss):
Foreign currency translation adjustments			299,790						(6,081)						462,686						(50,149)
Unrealized gain on cash flow hedging activities, net of income tax expense of $142, $529, $5 and $2,249 respectively			458						1,592						15						6,769
Gain on cash flow hedging activities reclassified from accumulated other comprehensive loss to interest expense, net of income tax expense of $119, $446, $251 and $897 respectively			(406)						(1,344)						(802)						(2,700)
Other comprehensive income (loss)			299,842						(5,833)						461,899						(46,080)
Total comprehensive income (loss)			$	(418,628)					$	162,735					$	(349,112)					$	107,870

The accompanying notes are an integral part of these condensed consolidated financial statements.

10

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(In thousands)

(Unaudited)

			Ordinary Shares												Non-voting Euro Deferred												Capital Redemption Reserve						Additional Paid-in Capital						Accumulated Other Comprehensive Loss						Retained Earnings																		Total Equity
			Shares						Amount						Shares						Amount
Balance at December 31, 2024			60,631						$	6					4,000						$	55					$	473					$	3,913,542					$	(947,667)					$	1,127,347																	$	4,093,756
Issuance of ordinary shares in conjunction with exercise of share options			93						—						—						—						—						11,447						—						—																		11,447
Issuance of ordinary shares in conjunction with vesting of restricted stock units			811						—						—						—						—						—						—						—																		—
Issuance of ordinary shares in conjunction with vesting of performance-based restricted stock units			88						—						—						—						—						—						—						—																		—
Shares withheld for payment of employees' withholding tax liability			—						—						—						—						—						(67,163)						—						—																		(67,163)
Share-based compensation			—						—						—						—						—						67,335						—						—																		67,335
Other comprehensive income			—						—						—						—						—						—						162,057						—																		162,057
Net loss			—						—						—						—						—						—						—						(92,541)																		(92,541)
Balance at March 31, 2025			61,623						$	6					4,000						$	55					$	473					$	3,925,161					$	(785,610)					$	1,034,806																	$	4,174,891
Issuance of ordinary shares in conjunction with exercise of share options			1						—						—						—						—						—						—						—																		—
Issuance of ordinary shares under employee stock purchase plan			117						—						—						—						—						10,497						—						—																		10,497
Issuance of ordinary shares in conjunction with vesting of restricted stock units			41						—						—						—						—						—						—						—																		—
Shares withheld for payment of employees' withholding tax liability			—						—						—						—						—						(2,249)						—						—																		(2,249)
Share-based compensation			—						—						—						—						—						66,871						—						—																		66,871
Shares repurchased			(1,142)						—						—						—						—						—						—						(125,023)																		(125,023)
Other comprehensive income			—						—						—						—						—						—						299,842						—																		299,842
Net loss			—						—						—						—						—						—						—						(718,470)																		(718,470)
Balance at June 30, 2025			60,640						$	6					4,000						$	55					$	473					$	4,000,280					$	(485,768)					$	191,313																	$	3,706,359

11

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY

(In thousands)

(Unaudited)

			Ordinary Shares												Non-voting Euro Deferred												Capital Redemption Reserve						Additional Paid-in Capital						Accumulated Other Comprehensive Loss						Retained Earnings																		Total Equity
			Shares						Amount						Shares						Amount
Balance at December 31, 2023			62,255						$	6					4,000						$	55					$	473					$	3,699,954					$	(842,147)					$	878,656																	$	3,736,997
Issuance of ordinary shares in conjunction with exercise of share options			7						—						—						—						—						494						—						—																		494
Issuance of ordinary shares in conjunction with vesting of restricted stock units			686						—						—						—						—						—						—						—																		—
Issuance of ordinary shares in conjunction with vesting of performance-based restricted stock units			80						—						—						—						—						—						—						—																		—
Shares withheld for payment of employees' withholding tax liability			—						—						—						—						—						(49,296)						—						—																		(49,296)
Share-based compensation			—						—						—						—						—						63,131						—						—																		63,131
Other comprehensive loss			—						—						—						—						—						—						(40,247)						—																		(40,247)
Net loss			—						—						—						—						—						—						—						(14,618)																		(14,618)
Balance at March 31, 2024			63,028						$	6					4,000						$	55					$	473					$	3,714,283					$	(882,394)					$	864,038																	$	3,696,461
Issuance of ordinary shares in conjunction with exercise of share options			4						—						—						—						—						54						—						—																		54
Issuance of ordinary shares under employee stock purchase plan			122						—						—						—						—						10,886						—						—																		10,886
Issuance of ordinary shares in conjunction with vesting of restricted stock units			49						—						—						—						—						—						—						—																		—
Shares withheld for payment of employees' withholding tax liability			—						—						—						—						—						(2,847)						—						—																		(2,847)
Share-based compensation			—						—						—						—						—						56,738						—						—																		56,738
Shares repurchased			(1,458)						—						—						—						—						—						—						(161,428)																		(161,428)
Other comprehensive loss			—						—						—						—						—						—						(5,833)						—																		(5,833)
Net income			—						—						—						—						—						—						—						168,568																		168,568
Balance at June 30, 2024			61,745						$	6					4,000						$	55					$	473					$	3,779,114					$	(888,227)					$	871,178																	$	3,762,599

The accompanying notes are an integral part of these condensed consolidated financial statements.

12

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

(Unaudited) 

			Six Months Ended June 30,
			2025						2024
Operating activities
Net income (loss)			$	(811,011)					$	153,950
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Acquired in-process research and development			905,362						10,000
Intangible asset amortization			316,551						310,953
Share-based compensation			132,154						118,095
Acquisition accounting inventory fair value step-up adjustment			66,989						62,186
Depreciation			22,331						15,465
Non-cash interest expense			21,914						11,200
Provision for losses on accounts receivable and inventory			6,771						13,186
Deferred tax benefit			(110,252)						(141,568)
Other non-cash transactions			7,042						15,520
Changes in assets and liabilities:
Accounts receivable			10,530						277
Inventories			(61,852)						(17,591)
Prepaid expenses and other current assets			8,212						34,872
Operating lease assets			12,440						7,199
Other non-current assets			(802)						(5,699)
Accounts payable			6,465						(4,148)
Accrued liabilities			(75,351)						5,404
Income taxes payable			59,270						18,030
Operating lease liabilities, less current portion			(2,887)						(6,909)
Other non-current liabilities			4,763						(1,841)
Net cash provided by operating activities			518,639						598,581
Investing activities
Asset acquisition, net of cash acquired			(858,053)						—
Acquisition of investments			(680,050)						(705,000)
Purchases of property, plant and equipment			(26,848)						(13,995)
Acquisition of intangible assets			(25,000)						—
Proceeds from maturity of investments			780,000						200,000
Acquired in-process research and development			—						(10,000)
Net cash used in investing activities			(809,951)						(528,995)
Financing activities
Repayments of long-term debt			(765,500)						(15,500)
Share repurchases			(125,023)						(161,428)
Payment of employee withholding taxes related to share-based awards			(69,412)						(52,143)
Proceeds from employee equity incentive and purchase plans			21,944						11,434
Net cash used in financing activities			(937,991)						(217,637)
Effect of exchange rates on cash and cash equivalents			6,319						(2,457)
Net decrease in cash and cash equivalents			(1,222,984)						(150,508)
Cash and cash equivalents, at beginning of period			2,412,864						1,506,310
Cash and cash equivalents, at end of period			$	1,189,880					$	1,355,802

The accompanying notes are an integral part of these condensed consolidated financial statements.

13

---

Table of Contents

JAZZ PHARMACEUTICALS PLC

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

1. The Company and Summary of Significant Accounting Policies

Jazz Pharmaceuticals plc is a global biopharmaceutical company whose purpose is to innovate to transform the lives of patients and their families. We are dedicated to developing life-changing medicines for people with serious diseases - often with limited or no therapeutic options. We have a diverse portfolio of marketed medicines, including leading therapies for sleep disorders and epilepsy, and a growing portfolio of cancer treatments. Our patient-focused and science-driven approach powers pioneering research and development advancements across our robust pipeline of innovative therapeutics in oncology and neuroscience.

Our lead marketed products, listed below, are approved in countries around the world to improve patient care.

Neuroscience

•Xywav® (calcium, magnesium, potassium, and sodium oxybates) oral solution, a product approved by FDA in July 2020, and launched in the U.S. in November 2020 for the treatment of cataplexy or EDS in patients seven years of age and older with narcolepsy, and also approved by FDA in August 2021 for the treatment of IH in adults and launched in the U.S. in November 2021. Xywav contains 92% less sodium than Xyrem®. Xywav is also approved in Canada for the treatment of cataplexy in patients with narcolepsy.

•Epidiolex® (cannabidiol) oral solution, a product approved by FDA and launched in the U.S. in 2018 by GW and currently indicated for the treatment of seizures associated with LGS, DS, or TSC in patients one year of age or older; in the EU and Great Britain (where it is marketed as Epidyolex®) and other markets, it is approved for adjunctive treatment of seizures associated with LGS or DS, in conjunction with clobazam (EU and Great Britain only), in patients 2 years of age and older and for adjunctive treatment of seizures associated with TSC in patients 2 years of age and older.

Oncology

•Rylaze® (asparaginase erwinia chrysanthemi (recombinant)-rywn), a product approved by FDA in June 2021 and launched in the U.S. in July 2021 for use as a component of a multi-agent chemotherapeutic regimen for the treatment of ALL or LBL in adults and pediatric patients aged one month or older who have developed hypersensitivity to E. coli-derived asparaginase. In September 2023, the EC granted marketing authorization under the trade name Enrylaze®. This therapy is also approved in markets including Great Britain, Canada, Switzerland and Australia.

•Zepzelca® (lurbinectedin), a product approved by FDA in June 2020 under FDA's accelerated approval pathway and launched in the U.S. in July 2020 for the treatment of adult patients with metastatic SCLC with disease progression on or after platinum-based chemotherapy; in Canada, Zepzelca received conditional approval in September 2021 for the treatment of adults with Stage III or metastatic SCLC, who have progressed on or after platinum-containing therapy.

•Ziihera® (zanidatamab-hrii), a product approved by FDA in November 2024 under FDA’s accelerated approval pathway and launched in the U.S. in December 2024 for the treatment of adults with previously treated, unresectable or metastatic HER2-positive (IHC 3+) BTC, as detected by an FDA-approved test. In June 2025, the EC granted conditional marketing authorization for Ziihera® for the treatment of adults with unresectable locally advanced or metastatic HER2-positive (IHC3+) BTC previously treated with at least one prior line of systemic therapy.

In April 2025, we acquired Chimerix for a total cash consideration of $944.2 million. For further information regarding the Chimerix Acquisition, please see Note 2.

Throughout this Quarterly Report on Form 10-Q, unless otherwise indicated or the context otherwise requires, all references to “Jazz Pharmaceuticals,” “the registrant,” “the Company,” “we,” “us,” and “our” refer to Jazz Pharmaceuticals plc and its consolidated subsidiaries. Throughout this Quarterly Report on Form 10-Q, all references to “ordinary shares” refer to Jazz Pharmaceuticals plc’s ordinary shares.

Basis of Presentation

These unaudited condensed consolidated financial statements have been prepared following the requirements of the U.S. Securities and Exchange Commission for interim reporting. As permitted under those rules, certain footnotes and other financial information that are normally required by U.S. GAAP can be condensed or omitted. The information included in this

14

---

Table of Contents

Quarterly Report on Form 10‑Q should be read in conjunction with our annual audited consolidated financial statements and accompanying notes included in our Annual Report on Form 10‑K for the year ended December 31, 2024.

In the opinion of management, these condensed consolidated financial statements have been prepared on the same basis as the annual audited consolidated financial statements and include all adjustments, consisting only of normal recurring adjustments, considered necessary for the fair presentation of our financial position and operating results. The results for the three and six months ended June 30, 2025, are not necessarily indicative of the results to be expected for the year ending December 31, 2025, for any other interim period or for any future period.

Our significant accounting policies have not changed substantially from those previously described in our Annual Report on Form 10‑K for the year ended December 31, 2024.

These condensed consolidated financial statements include the accounts of Jazz Pharmaceuticals plc and our subsidiaries, and intercompany transactions and balances have been eliminated.

Our operating segment is reported in a manner consistent with the internal reporting provided to the CODM. Our CODM has been identified as our chief executive officer. We have determined that we operate in one business segment, which is the identification, development and commercialization of meaningful pharmaceutical products that address unmet medical needs. The CODM assesses performance and decides how to allocate resources for the segment based on net income (loss) and measure of segment assets which is reported on the condensed consolidated statements of income (loss) and condensed consolidated balance sheet.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosures in the condensed consolidated financial statements and accompanying notes. Management bases its estimates on historical experience and on assumptions believed to be reasonable under the circumstances. Actual results could differ materially from those estimates.

Adoption of New Accounting Standards

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740) - Improvements to Income Tax Disclosures”, which requires enhanced tax disclosures providing greater disaggregation of information in the Company's effective tax rate reconciliation and disaggregates income taxes paid by jurisdiction. The amendments are effective on a prospective basis, with the option to apply it retrospectively, for fiscal years beginning after December 15, 2024. The adoption of ASU 2023-09 will expand our income tax disclosures in our Annual Report on Form 10-K, but will have no impact on reported income tax (benefit) expense or related tax assets or liabilities.

Significant Risks and Uncertainties

We expect that our business will continue to meaningfully depend on oxybate revenues; however, there is no guarantee that oxybate revenues will remain at current levels. In this regard, our ability to maintain oxybate revenues and realize the anticipated benefits from our investment in Xywav are subject to a number of risks and uncertainties including, without limitation, those related to the commercialization of Xywav for the treatment of IH in adults and adoption in that indication; competition from the introduction of two AG versions of high-sodium oxybate and a branded fixed-dose, high-sodium oxybate, Avadel’s Lumryz, for treatment of cataplexy and/or EDS in narcolepsy in the U.S. market, as well as potential future competition from additional AG versions of high-sodium oxybate and from generic versions of high-sodium oxybate and from other competitors; increased pricing pressure from, changes in policies by, or restrictions on reimbursement imposed by, third party payors, including our ability to maintain adequate coverage and reimbursement for Xywav; increased rebates required to maintain access to our products; challenges to our intellectual property around Xywav and/or Xyrem, including from pending antitrust and intellectual property litigation; and continued acceptance of Xywav by physicians and patients. A significant decline in oxybate revenues could cause us to reduce our operating expenses or seek to raise additional funds and would have a material adverse effect on our business, financial condition, results of operations and growth prospects, including on our ability to acquire, in-license or develop new products to grow our business.

Our financial condition, results of operations and growth prospects are also dependent on our ability to maintain or increase sales of Epidiolex/Epidyolex in the U.S. and Europe, which is subject to many risks and there is no guarantee that we will be able to continue to successfully commercialize Epidiolex/Epidyolex for its approved indications. The commercial success of Epidiolex/Epidyolex depends on the extent to which patients and physicians accept and adopt Epidiolex/Epidyolex as a treatment for seizures associated with LGS, DS and TSC, and we do not know whether our or others’ estimates in this regard will be accurate. Physicians may not prescribe Epidiolex and patients may be unwilling to use Epidiolex/Epidyolex if

15

---

Table of Contents

coverage is not provided or reimbursement is inadequate to cover a significant portion of the cost. Additionally, any negative development for Epidiolex/Epidyolex in the market, in clinical development for additional indications, or in regulatory processes in other jurisdictions, may adversely impact the commercial results and potential of Epidiolex/Epidyolex.

In addition to risks related specifically to Xywav and Epidiolex/Epidyolex, we are subject to other challenges and risks related to successfully commercializing a portfolio of oncology products and other neuroscience products, and other risks specific to our business and our ability to execute on our strategy, as well as risks and uncertainties common to companies in the pharmaceutical industry with development and commercial operations, including, without limitation, risks and uncertainties associated with: pharmaceutical product development, ongoing clinical research activity and related outcomes; obtaining regulatory approval of our late-stage product candidates, including dordaviprone; effectively commercializing our approved products such as Rylaze, Zepzelca and Ziihera; obtaining and maintaining adequate coverage and reimbursement for our products; contracting and rebates to pharmacy benefit managers and similar organizations that reduce our net revenue; increasing scrutiny of pharmaceutical product pricing and resulting changes in healthcare laws and policy; market acceptance; regulatory concerns with controlled substances generally and the potential for abuse; future legislation; action by the U.S. Federal Government authorizing the sale, distribution, use, and insurance reimbursement of non-FDA approved cannabinoid products; delays or problems in the supply of our products; loss of single source suppliers or failure to comply with manufacturing regulations; delays or problems with third parties that are part of our manufacturing and supply chain; identifying, acquiring or in-licensing additional products or product candidates; our ability to realize the anticipated benefits of acquired or in-licensed products or product candidates, such as Ziihera and dordaviprone, at the expected levels, with the expected costs and within the expected timeframe; the challenges of protecting and enhancing our intellectual property rights; complying with applicable regulatory requirements; the impact of new or increased tariffs and escalating trade tensions; and possible restrictions on our ability and flexibility to pursue certain future opportunities as a result of our substantial outstanding debt obligations.

Concentrations of Risk

Financial instruments that potentially subject us to concentrations of credit risk consist of cash, cash equivalents, investments and derivative contracts. Our investment policy permits investments in U.S. federal government and federal agency securities, corporate bonds or commercial paper issued by U.S. corporations, money market instruments, certain qualifying money market mutual funds, certain repurchase agreements, and tax-exempt obligations of U.S. states, agencies and municipalities and places restrictions on credit ratings, maturities, and concentration by type and issuer. We are exposed to credit risk in the event of a default by the financial institutions holding our cash, cash equivalents and investments to the extent recorded on the balance sheet.

We manage our foreign currency transaction risk and interest rate risk within specified guidelines through the use of derivatives. All of our derivative instruments are utilized for risk management purposes, and we do not use derivatives for speculative trading purposes. As of June 30, 2025 and December 31, 2024, we had foreign exchange forward contracts with notional amounts totaling $372.3 million and $461.2 million, respectively. As of June 30, 2025 and December 31, 2024, the outstanding foreign exchange forward contracts had a net asset fair value of $6.3 million and a net liability fair value of $7.9 million, respectively. As of June 30, 2025 and December 31, 2024, we had interest rate swap contracts with notional amounts totaling $500.0 million. As of June 30, 2025 and December 31, 2024, these outstanding interest rate swap contracts had a net liability fair value of $42 thousand and a net asset fair value of $1.0 million, respectively. The counterparties to these contracts are large multinational commercial banks, and we believe the risk of nonperformance is not significant.

We are also subject to credit risk from our accounts receivable related to our product sales. We monitor our exposure within accounts receivable and record a reserve against uncollectible accounts receivable as necessary. We extend credit to pharmaceutical wholesale distributors and specialty pharmaceutical distribution companies, primarily in the U.S., and to other international distributors and hospitals. Customer creditworthiness is monitored and collateral is not required. We monitor economic conditions in certain European countries which may result in variability of the timing of cash receipts and an increase in the average length of time that it takes to collect accounts receivable outstanding. Historically, we have not experienced significant credit losses on our accounts receivable and, as of June 30, 2025 and December 31, 2024, allowances on receivables were not material. As of June 30, 2025, five customers accounted for 81% of gross accounts receivable, including ESSDS, which accounted for 41% of gross accounts receivable, ASD, which accounted for 15% of gross accounts receivable and McKesson, which accounted for 11% of gross accounts receivable. As of December 31, 2024, five customers accounted for 80% of gross accounts receivable, including ESSDS, which accounted for 39% of gross accounts receivable, ASD, which accounted for 15% of gross accounts receivable and McKesson, which accounted for 13% of gross accounts receivable.

We depend on single source suppliers for most of our products, product candidates and their APIs. With respect to our oxybate products, the API is manufactured for us by a single source supplier and the finished products are manufactured both by us in our facility in Athlone, Ireland and by our U.S.-based supplier, which is certified to produce Xyrem and Xywav.

16

---

Table of Contents

Recent Accounting Pronouncements

In November 2024, the FASB issued ASU 2024-03, “Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-04) - Disaggregation of Income Statement Expenses”, which requires additional disclosure in the notes to the financial statements of the nature of certain expenses included in the income statement. The amendments are effective on a prospective basis, with the option to apply them retrospectively, for fiscal years beginning after December 15, 2026. We are currently evaluating the impact of adopting this new accounting guidance.

In November 2024, the FASB issued ASU 2024-04, “Induced Conversions of Convertible Debt Instruments”, which clarifies the requirements for determining whether certain settlements of convertible debt instruments should be accounted for as an induced conversion or extinguishment of convertible debt. The amendments are effective on a prospective basis, with the option to apply them retrospectively, for fiscal years beginning after December 15, 2025. We are currently evaluating the impact of adopting this new accounting guidance.

2. Asset Acquisition

On April 21, 2025, we acquired the entire issued share capital of Chimerix at a price of $8.55 per share, payable in cash at closing, representing a total cash consideration of $944.2 million, funded with our cash and cash equivalents. As a result of this, Chimerix became an indirect wholly owned subsidiary of the Company. The acquisition of Chimerix was accounted for as an asset acquisition because it did not meet the definition of a business.

The total consideration paid and the allocation to assets acquired and liabilities assumed was (in thousands):

Consideration
Cash consideration to acquire Chimerix’s outstanding common stock			$	802,023
Cash consideration for Chimerix’s outstanding equity awards			142,131
Total cash consideration paid to Chimerix			944,154
Transaction costs			13,237
Total consideration			$	957,391
Assets Acquired and Liabilities Assumed
Cash			$	99,338
In-process research and development			905,362
Accrued liabilities			(53,066)
Other assets and liabilities			5,757
Total net assets acquired			$	957,391

The value attributed to in-process research and development relates to dordaviprone and was expensed as it was determined to have no alternative future use.

3. Cash and Available-for-Sale Securities

Cash, cash equivalents and investments consisted of the following (in thousands): 

			June 30, 2025
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Estimated Fair Value						Cash and Cash Equivalents						Investments
Cash			$	672,211					$	—					$	—					$	672,211					$	672,211					$	—
Time deposits			480,000						—						—						480,000						—						480,000
Money market funds			517,669						—						—						517,669						517,669						—
Totals			$	1,669,880					$	—					$	—					$	1,669,880					$	1,189,880					$	480,000

17

---

Table of Contents

			December 31, 2024
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Estimated Fair Value						Cash and Cash Equivalents						Investments
Cash			$	948,894					$	—					$	—					$	948,894					$	948,894					$	—
Time deposits			790,000						—						—						790,000						210,000						580,000
Money market funds			1,253,970						—						—						1,253,970						1,253,970						—
Totals			$	2,992,864					$	—					$	—					$	2,992,864					$	2,412,864					$	580,000

Cash equivalents and investments are considered available-for-sale securities. We use the specific-identification method for calculating realized gains and losses on securities sold and include them in interest expense, net in the condensed consolidated statements of income (loss). Our investment balances represent time deposits with original maturities of greater than three months and less than one year. Interest income from available-for-sale securities was $19.1 million and $46.8 million in the three and six months ended June 30, 2025, respectively, and $25.4 million and $48.6 million in the three and six months ended June 30, 2024, respectively.

4. Fair Value Measurement

The following table summarizes, by major security type, our available-for-sale securities and derivative contracts as of June 30, 2025 and December 31, 2024, that were measured at fair value on a recurring basis and were categorized using the fair value hierarchy (in thousands): 

			June 30, 2025																		December 31, 2024
			Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)												Total Estimated Fair Value						Quoted Prices in Active Markets for Identical Assets (Level 1)						Significant Other Observable Inputs (Level 2)												Total Estimated Fair Value
Assets:
Available-for-sale securities:
Money market funds			$	517,669					$	—											$	517,669					$	1,253,970					$	—											$	1,253,970
Time deposits			—						480,000												480,000						—						790,000												790,000
Foreign exchange forward contracts			—						9,137												9,137						—						2,250												2,250
Interest rate contracts			—						6												6						—						991												991
Totals			$	517,669					$	489,143											$	1,006,812					$	1,253,970					$	793,241											$	2,047,211
Liabilities:
Foreign exchange forward contracts			$	—					$	2,801											$	2,801					$	—					$	10,198											$	10,198
Interest rate contracts			—						48												48						—						—												—
Totals			$	—					$	2,849											$	2,849					$	—					$	10,198											$	10,198

As of June 30, 2025 and December 31, 2024, our available-for-sale securities included money market funds and time deposits and their carrying values were approximately equal to their fair values. Money market funds were measured using quoted prices in active markets, which represent Level 1 inputs and time deposits were measured at fair value using Level 2 inputs. Level 2 inputs are obtained from various third party data providers and represent quoted prices for similar assets in active markets, or these inputs were derived from observable market data, or if not directly observable, were derived from or corroborated by other observable market data.

Our derivative assets and liabilities include interest rate and foreign exchange derivatives that are measured at fair value using observable market inputs such as forward rates, interest rates, our own credit risk as well as an evaluation of our counterparties’ credit risks. Based on these inputs, the derivative assets and liabilities are classified within Level 2 of the fair value hierarchy.

There were no transfers between the different levels of the fair value hierarchy in 2025 or 2024.

As of June 30, 2025 and December 31, 2024, the carrying amount of investments measured using the measurement alternative for equity investments without a readily determinable fair value was $4.3 million. The carrying amount, which is recorded within other non-current assets, is based on the latest observable transaction price.

18

---

Table of Contents

As of June 30, 2025 and December 31, 2024, the estimated fair values of the 2026 Notes, the 2030 Notes and the Secured Notes were $1.0 billion, $1.1 billion and $1.4 billion, respectively. The estimated fair value of the Tranche B-2 Dollar Term Loans as of June 30, 2025 and December 31, 2024 was $1.9 billion and $2.7 billion, respectively. The fair values of each of these debt facilities was estimated using quoted market prices obtained from brokers (Level 2).

5. Derivative Instruments and Hedging Activities

We are exposed to certain risks arising from operating internationally, including fluctuations in foreign exchange rates primarily related to the translation of sterling and euro denominated net monetary liabilities, including intercompany balances, held by subsidiaries with a U.S. dollar functional currency and fluctuations in interest rates on our outstanding term loan borrowings. We manage these exposures within specified guidelines through the use of derivatives. All of our derivative instruments are utilized for risk management purposes, and we do not use derivatives for speculative trading purposes.

We enter into foreign exchange forward contracts, with durations of up to 12 months, designed to limit the exposure to fluctuations in foreign exchange rates related to the translation of certain non-U.S. dollar denominated liabilities, including intercompany balances. Hedge accounting is not applied to these derivative instruments as gains and losses on these hedge transactions are designed to offset gains and losses on underlying balance sheet exposures. As of June 30, 2025 and December 31, 2024, the notional amount of foreign exchange contracts where hedge accounting is not applied was $372.3 million and $461.2 million, respectively.

The foreign exchange gain (loss) in our condensed consolidated statements of income (loss) included the following gains (losses) associated with foreign exchange contracts not designated as hedging instruments (in thousands):

			Three Months Ended June 30,												Six Months Ended June 30,
Foreign Exchange Forward Contracts:			2025						2024						2025						2024
Gain (loss) recognized in foreign exchange gain (loss)			$	12,393					$	(825)					$	21,000					$	(4,911)

To achieve a desired mix of floating and fixed interest rates on our variable rate debt, we entered into interest rate swap agreements in April 2023, which are effective until April 2026. These agreements hedge contractual term loan interest rates. As of June 30, 2025, the interest rate swap agreements had a notional amount of $500.0 million. As a result of these agreements, the interest rate on a portion of our term loan borrowings is fixed at 3.9086%, plus the borrowing spread, until April 30, 2026.

The impact on accumulated other comprehensive loss and earnings from derivative instruments that qualified as cash flow hedges was as follows (in thousands):

			Three Months Ended June 30,												Six Months Ended June 30,
Interest Rate Contracts:			2025						2024						2025						2024
Gain recognized in accumulated other comprehensive loss, net of tax			$	458					$	1,592					$	15					$	6,769
Gain reclassified from accumulated other comprehensive loss to interest expense, net of tax			(406)						(1,344)						(802)						(2,700)

The cash flow effects of our derivative contracts for the six months ended June 30, 2025 and 2024 are included within net cash provided by operating activities in the condensed consolidated statements of cash flows.

19

---

Table of Contents

The following tables summarize the fair value of outstanding derivatives (in thousands):

			Classification			June 30, 2025						December 31, 2024
Assets
Derivatives designated as hedging instruments:
Interest rate contracts			Other current assets			$	6					$	959
			Other non-current assets			—						32
Derivatives not designated as hedging instruments:
Foreign exchange forward contracts			Other current assets			9,137						2,250
Total fair value of derivative asset instruments						$	9,143					$	3,241
Liabilities
Derivatives designated as hedging instruments:
Interest rate contracts			Accrued liabilities			$	48					$	—
Derivatives not designated as hedging instruments:
Foreign exchange forward contracts			Accrued liabilities			2,801						10,198
Total fair value of derivative liability instruments						$	2,849					$	10,198

Although we do not offset derivative assets and liabilities within our condensed consolidated balance sheets, our International Swap and Derivatives Association agreements provide for net settlement of transactions that are due to or from the same counterparty upon early termination of the agreement due to an event of default or other termination event. The following table summarizes the potential effect on our condensed consolidated balance sheets of offsetting our interest rate and foreign exchange forward contracts subject to such provisions (in thousands):

			June 30, 2025
			Gross Amounts of Recognized Assets/ Liabilities						Gross Amounts Offset in the Consolidated Balance Sheet						Net Amounts of Assets/ Liabilities Presented in the Consolidated Balance Sheet						Gross Amounts Not Offset in the Consolidated Balance Sheet
Description																					Derivative Financial Instruments						Cash Collateral Received (Pledged)						Net Amount
Derivative assets			$	9,143					$	—					$	9,143					$	(2,834)					$	—					$	6,309
Derivative liabilities			(2,849)						—						(2,849)						2,834						—						(15)

			December 31, 2024
			Gross Amounts of Recognized Assets/ Liabilities						Gross Amounts Offset in the Consolidated Balance Sheet						Net Amounts of Assets/ Liabilities Presented in the Consolidated Balance Sheet						Gross Amounts Not Offset in the Consolidated Balance Sheet
Description																					Derivative Financial Instruments						Cash Collateral Received (Pledged)						Net Amount
Derivative assets			$	3,241					$	—					$	3,241					$	(2,910)					$	—					$	331
Derivative liabilities			(10,198)						—						(10,198)						2,910						—						(7,288)

6. Inventories

Inventories consisted of the following (in thousands): 

			June 30, 2025						December 31, 2024
Raw materials			$	39,566					$	20,161
Work in process			300,459						311,752
Finished goods			164,964						148,532
Total inventories			$	504,989					$	480,445

As of June 30, 2025 and December 31, 2024, inventories included $138.0 million and $191.2 million, respectively, related to the purchase accounting inventory fair value step-up on inventory acquired as part of our GW acquisition.

20

---

Table of Contents

7. Goodwill and Intangible Assets

The gross carrying amount of goodwill was as follows (in thousands):

Balance at December 31, 2024			$	1,716,323
Foreign exchange			127,651
Balance at June 30, 2025			$	1,843,974

The gross carrying amounts and net book values of our intangible assets were as follows (in thousands): 

			June 30, 2025																								December 31, 2024
			Remaining Weighted- Average Useful Life (In years)						Gross Carrying Amount						Accumulated Amortization						Net Book Value						Gross Carrying Amount						Accumulated Amortization						Net Book Value
Acquired developed technologies			7.3						$	8,240,335					$	(3,471,348)					$	4,768,987					$	7,699,423					$	(2,943,728)					$	4,755,695
Manufacturing contracts			—						12,545						(12,545)						—						11,121						(11,121)						—
Trademarks			—						2,903						(2,903)						—						2,868						(2,868)						—
Total finite-lived intangible assets									$	8,255,783					$	(3,486,796)					$	4,768,987					$	7,713,412					$	(2,957,717)					$	4,755,695

The increase in the gross carrying amount of intangible assets as of June 30, 2025, compared to December 31, 2024, relates to the positive impact of foreign currency translation adjustments primarily due to the strengthening of sterling against the U.S. dollar.

The assumptions and estimates used to determine future cash flows and remaining useful lives of our intangible and other long-lived assets are complex and subjective. They can be affected by various factors, including external factors, such as industry and economic trends, and internal factors such as changes in our business strategy and our forecasts for specific product lines.

Based on finite-lived intangible assets recorded as of June 30, 2025, and assuming the underlying assets will not be impaired and that we will not change the expected lives of the assets, future amortization expenses were estimated as follows (in thousands): 

Year Ending December 31,			Estimated Amortization Expense
2025 (remainder)			$	340,354
2026			678,197
2027			669,802
2028			646,640
2029			644,906
Thereafter			1,789,088
Total			$	4,768,987

21

---

Table of Contents

8. Certain Balance Sheet Items

Property, plant and equipment consisted of the following (in thousands):

			June 30, 2025						December 31, 2024
Manufacturing equipment and machinery			$	96,286					$	87,451
Land and buildings			73,772						71,902
Computer software			58,399						42,635
Leasehold improvements			56,119						70,201
Construction-in-progress			36,334						34,493
Computer equipment			21,487						20,137
Furniture and fixtures			8,902						8,551
Subtotal			351,299						335,370
Less accumulated depreciation and amortization			(166,324)						(161,957)
Property, plant and equipment, net			$	184,975					$	173,413

Accrued liabilities consisted of the following (in thousands):

			June 30, 2025						December 31, 2024
Rebates and other sales deductions			$	429,142					$	342,717
Employee compensation and benefits			103,074						153,133
Clinical trial accruals			44,557						49,962
Inventory-related accruals			41,670						25,509
Accrued interest			40,703						41,626
Accrued royalties			31,627						36,802
Sales return reserve			29,816						26,428
Consulting and professional services			24,425						26,221
Selling and marketing accruals			23,265						26,981
Accrued development expenses			20,613						23,099
Current portion of lease liabilities			13,883						14,779
Accrued construction-in-progress			7,705						10,061
Derivative instrument liabilities			2,849						10,198
Accrued collaboration expenses			2,339						18,005
Accrued milestones			—						27,500
Other			59,143						77,926
Total accrued liabilities			$	874,811					$	910,947

22

---

Table of Contents

9. Debt

The following table summarizes the carrying amount of our indebtedness (in thousands):

			June 30, 2025						December 31, 2024
2026 Notes			$	1,000,000					$	1,000,000
Unamortized - debt issuance costs			(2,522)						(3,747)
2026 Notes, net			997,478						996,253
2030 Notes			1,000,000						1,000,000
Unamortized - debt issuance costs			(17,735)						(19,135)
2030 Notes, net			982,265						980,865
Secured Notes			1,485,338						1,483,841
Term Loan (1)			1,899,013						2,647,681
Total debt			5,364,094						6,108,640
Less current portion (2)			1,028,478						31,000
Total long-term debt			$	4,335,616					$	6,077,640

________________________

(1) In January 2025, we made a voluntary repayment on the Tranche B-2 Dollar Term Loan totaling $750.0 million.

(2) Balance as of June 30, 2025 includes the 2026 Notes since they mature in June 2026.

Exchangeable Senior Notes

The Exchangeable Senior Notes were issued by Jazz Investments, or the Issuer, a 100%-owned finance subsidiary of Jazz Pharmaceuticals plc. The Exchangeable Senior Notes are senior unsecured obligations of the Issuer and are fully and unconditionally guaranteed on a senior unsecured basis by Jazz Pharmaceuticals plc. No subsidiary of Jazz Pharmaceuticals plc guaranteed the Exchangeable Senior Notes. Subject to certain local law restrictions on payment of dividends, among other things, and potential negative tax consequences, we are not aware of any significant restrictions on the ability of Jazz Pharmaceuticals plc to obtain funds from the Issuer or Jazz Pharmaceuticals plc’s other subsidiaries by dividend or loan, or any legal or economic restrictions on the ability of the Issuer or Jazz Pharmaceuticals plc’s other subsidiaries to transfer funds to Jazz Pharmaceuticals plc in the form of cash dividends, loans or advances. There is no assurance that in the future such restrictions will not be adopted.

In September 2024, Jazz Investments completed a private placement of $1.0 billion aggregate principal amount of the 2030 Notes. The 2030 Notes are accounted for as a single liability measured at its amortized cost. The total liability is reflected net of issuance costs of $19.2 million which will be amortized over the term of the 2030 Notes. The effective interest rate of the 2030 Notes is 3.47%. During the three months ended June 30, 2025, we recognized interest expense of $8.5 million, of which $7.8 million related to the contractual coupon rate and $0.7 million related to the amortization of debt issuance costs. During the six months ended June 30, 2025, we recognized interest expense of $17.0 million, of which $15.6 million related to the contractual coupon rate and $1.4 million related to the amortization of debt issuance costs.

The total liability of the 2026 Notes is reflected net of issuance costs of $15.3 million which will be amortized over the term of the 2026 Notes. The effective interest rate of the 2026 Notes is 2.26%. During the three months ended June 30, 2025 and 2024, we recognized interest expense of $5.6 million, of which $5.0 million related to the contractual coupon rate and $0.6 million related to the amortization of debt issuance costs. During the six months ended June 30, 2025 and 2024, we recognized interest expense of $11.1 million, of which $10.0 million related to the contractual coupon rate and $1.1 million related to the amortization of debt issuance costs.

On August 15, 2024, the maturity date for the 2024 Notes, we repaid the $575.0 million aggregate principal amount, plus accrued and unpaid interest thereon. The effective interest rate of the 2024 Notes was 1.79%. During the three months ended June 30, 2024, we recognized interest expense of $2.5 million, of which $2.1 million related to the contractual coupon rate and $0.4 million related to the amortization of debt issuance costs. During the six months ended June 30, 2024, we recognized interest expense of $5.0 million, of which $4.2 million related to the contractual coupon rate and $0.8 million related to the amortization of debt issuance costs.

23

---

Table of Contents

Maturities

Scheduled maturities with respect to our long-term debt principal balances outstanding as of June 30, 2025 were as follows (in thousands):

Year Ending December 31,			Scheduled Long-Term Debt Maturities
2025 (remainder)			$	15,500
2026			1,031,000
2027			31,000
2028			1,848,500
2029			1,500,000
Thereafter			1,000,000
Total			$	5,426,000

10. Commitments and Contingencies

Indemnification

In the normal course of business, we enter into agreements that contain a variety of representations and warranties and provide for general indemnification, including indemnification associated with product liability or infringement of intellectual property rights. Our exposure under these agreements is unknown because it involves future claims that may be made but have not yet been made against us. To date, we have not paid any claims or been required to defend any action related to these indemnification obligations.

We have agreed to indemnify our executive officers, directors and certain other employees for losses and costs incurred in connection with certain events or occurrences, including advancing money to cover certain costs, subject to certain limitations. The maximum potential amount of future payments we could be required to make under the indemnification obligations is unlimited; however, we maintain insurance policies that may limit our exposure and may enable us to recover a portion of any future amounts paid. Assuming the applicability of coverage, the willingness of the insurer to assume coverage, and subject to certain retention, loss limits and other policy provisions, we believe the fair value of these indemnification obligations is not significant. Accordingly, we did not recognize any liabilities relating to these obligations as of June 30, 2025 and December 31, 2024. No assurances can be given that the covering insurers will not attempt to dispute the validity, applicability, or amount of coverage without expensive litigation against these insurers, in which case we may incur substantial liabilities as a result of these indemnification obligations.

Legal Proceedings

We are involved in legal proceedings, including the following matters:

Xyrem Antitrust Litigation

From June 2020 to May 2022, a number of lawsuits were filed on behalf of purported direct and indirect Xyrem purchasers, alleging that the patent litigation settlement agreements we entered with generic drug manufacturers who had filed ANDAs violate state and federal antitrust and consumer protection laws, as follows:

On June 17, 2020, a class action lawsuit was filed in the United States District Court for the Northern District of Illinois by BCBS against the Company Defendants. The BCBS Lawsuit also the BCBS Defendants.

On June 18 and June 23, 2020, respectively, two additional class action lawsuits were filed against the Company Defendants and the BCBS Defendants: one by the New York State Teamsters Council Health and Hospital Fund in the United States District Court for the Northern District of California, and another by the Government Employees Health Association Inc. in the United States District Court for the Northern District of Illinois.

On June 18, 2020, a class action lawsuit was filed in the United States District Court for the Northern District of California by the City of Providence, Rhode Island, on behalf of itself and all others similarly situated, against the City of Providence Defendants.

On June 30, 2020, a class action lawsuit was filed in the United States District Court for the Northern District of Illinois by UFCW Local 1500 Welfare Fund on behalf of itself and all others similarly situated, against UFCW Defendants.

24

---

Table of Contents

On July 13, 2020, the plaintiffs in the BCBS Lawsuit and the GEHA Lawsuit dismissed their complaints in the United States District Court for the Northern District of Illinois and refiled their respective lawsuits in the United States District Court for the Northern District of California. On July 14, 2020, the plaintiffs in the UFCW Lawsuit dismissed their complaint in the United States District Court for the Northern District of Illinois and on July 15, 2020, refiled their lawsuit in the United States District Court for the Northern District of California.

On July 31, 2020, a class action lawsuit was filed in the United States District Court for the Southern District of New York by the A.F. of L.-A.G.C. Building Trades Welfare Plan on behalf of itself and all others similarly situated, against Jazz Pharmaceuticals plc. The AFL Plan Lawsuit also names Roxane Laboratories Inc., West-Ward Pharmaceuticals Corp., Hikma Labs Inc., Hikma Pharmaceuticals plc, Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals, Inc., and Lupin Inc.

On August 14, 2020, an additional class action lawsuit was filed in the United States District Court for the Southern District of New York by the Self-Insured Schools of California on behalf of itself and all others similarly situated, against the Company Defendants, as well as Hikma Pharmaceuticals plc, Eurohealth (USA) Inc., Hikma Pharmaceuticals USA, Inc., West-Ward Pharmaceuticals Corp., Roxane Laboratories, Inc., Amneal Pharmaceuticals LLC, Endo International, plc, Endo Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals Inc., Lupin Inc., Sun Pharmaceutical Industries Ltd., Sun Pharmaceutical Holdings USA, Inc., Sun Pharmaceutical Industries, Inc., Ranbaxy Laboratories Ltd., Teva Pharmaceutical Industries Ltd., Watson Laboratories, Inc., Wockhardt Ltd., Morton Grove Pharmaceuticals, Inc., Wockhardt USA LLC, Mallinckrodt plc, and Mallinckrodt LLC.

On September 16, 2020, an additional class action lawsuit was filed in the United States District Court for the Northern District of California, by Ruth Hollman on behalf of herself and all others similarly situated, against the same defendants named in the Self-Insured Schools Lawsuit.

In December 2020, the above cases were centralized and transferred to the United States District Court for the Northern District of California, where the multidistrict litigation will proceed for the purpose of discovery and pre-trial proceedings.

On March 18, 2021, United Healthcare filed the UHS Lawsuit in the United States District Court for the District of Minnesota against the Company Defendants, Hikma Pharmaceuticals plc, Roxane Laboratories, Inc., Hikma Pharmaceuticals USA Inc., Eurohealth (USA) Inc., Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., and Lupin Pharmaceuticals, Inc., raising similar allegations. On March 24, 2021, the U.S. Judicial Panel on Multidistrict Litigation conditionally transferred the UHS Lawsuit to the United States District Court for the Northern District of California, where it was consolidated for discovery and pre-trial proceedings with the other cases.

On August 13, 2021, the United States District Court for the Northern District of California granted in part and denied in part the Company Defendants' motion to dismiss the complaints in the cases referenced above.

On October 8, 2021, Humana Inc. filed a lawsuit in the United States District Court for the Northern District of California against the Company Defendants, Hikma Pharmaceuticals plc, Hikma Pharmaceuticals USA Inc., Hikma Labs, Inc., Eurohealth (USA), Inc., Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals, Inc., and Lupin Inc, raising similar allegations.

On October 8, 2021, Molina Healthcare Inc. filed a lawsuit in the United States District Court for the Northern District of California against the Company Defendants, Hikma Pharmaceuticals plc, Hikma Pharmaceuticals USA Inc., Hikma Labs, Inc., Eurohealth (USA), Inc., Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals, Inc., and Lupin Inc, raising similar allegations.

On February 17, 2022, Health Care Service Corporation filed a lawsuit in the United States District Court for the Northern District of California against the Company Defendants, Hikma Pharmaceuticals plc, Hikma Pharmaceuticals USA Inc., Hikma Labs, Inc., Eurohealth (USA), Inc., Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals, Inc., and Lupin Inc, raising similar allegations.

On April 19, 2023, the Court held a hearing on class certification in the consolidated multi-district litigation referenced above. On May 12, 2023, the Court granted the plaintiffs’ motion and preliminarily certified classes of Xyrem purchasers seeking monetary and injunctive relief. The Court excluded Xywav purchasers from the classes. On April 26, 2024, we, Hikma, and the plaintiffs filed motions for summary judgment. The Court held oral argument on these motions on July 19, 2024. On August 26, 2024, the Court issued a decision granting in part and denying in part the parties’ motions for summary judgment. Certain administrative service organization plaintiffs filed a motion for reconsideration of a portion of the Court’s summary judgment ruling. On December 16, 2024, the Court denied the motion for reconsideration. On January 15, 2025, Aetna, Inc., which is not a party to the consolidated multi-district litigation, filed a notice of appeal of the order denying reconsideration. On March 26, 2025, we and Hikma filed a motion to dismiss Aetna’s appeal. On May 20, 2025, the Ninth Circuit denied our motion to dismiss.

25

---

Table of Contents

On June 13, 2024, we filed a motion to decertify the class. On June 28, 2024, the plaintiffs filed a motion to amend the definition of the certified class. The Court held oral argument on these motions on August 22, 2024. On October 18, 2024, the Court issued a decision denying our motion to decertify the class and granting the plaintiffs’ motion to amend the class definition. On November 1, 2024, we filed a petition with the United States Court of Appeals for the Ninth Circuit seeking leave to appeal the Court’s decision amending the class definition. On January 29, 2025, the Ninth Circuit denied our petition for permission to appeal.

On April 7, 2025, Jazz Pharmaceuticals Ireland Limited, our wholly-owned subsidiary, entered into a class settlement agreement with the class of indirect Xyrem purchasers to settle all claims of participating class members against the Company with respect to our actions leading up to, and entering into, patent litigation settlement agreements with the ANDA filers.

Pursuant to the class settlement agreement, which was entered into with counsel representing the class representatives, we agreed to pay a total of $145 million in a lump sum. The class settlement agreement remains subject to court approval. The class settlement agreement, in which we deny all alleged wrongdoing, also includes specified releases by class members of Jazz and its past, present and future affiliates, directors, officers, employees and other related parties, for all conduct concerning any of the matters alleged, or that could have been alleged, in the lawsuit. Plaintiffs who affirmatively opt out of the class will not be bound by the release and will not receive any settlement proceeds. Additionally, the class settlement agreement grants us the right to rescind the settlement agreement in the event an agreed upon percentage based on Xyrem purchases or payments made by potential class members that opt out. This settlement, if finalized on the agreed-upon terms, will resolve the majority of claims at issue in the multidistrict litigation. If the class settlement agreement is not approved by the Court, or we terminate the class settlement agreement, we intend to defend against these claims vigorously. We also remain confident in our defenses to the other claims brought by plaintiffs described above, including that the patent settlement agreements at issue were and are pro-competitive, and intend to continue to vigorously defend against these claims.

The Court held a preliminary approval hearing regarding the class settlement agreement on May 15, 2025, and granted the motion for preliminary approval on May 16, 2025. The Court scheduled a final approval hearing regarding the class settlement for October 23, 2025.

On May 20, 2025, Jazz Pharmaceuticals Ireland Limited entered into a settlement agreement with United Healthcare to settle all of United Healthcare’s claims against us with respect to our actions leading up to, and entering into, patent litigation settlement agreements with the ANDA filers. Pursuant to that settlement agreement, on June 23, 2025, United Healthcare filed a motion for voluntary dismissal with prejudice of its claims against us. The Court granted United Healthcare’s motion on July 16, 2025. The terms of the settlement between Jazz Pharmaceuticals Ireland Limited and United Healthcare are confidential.

Trial between Jazz and the remaining plaintiffs in the consolidated multidistrict litigation in this matter is scheduled for March 2, 2026.

On January 13, 2023, Amneal Pharmaceuticals LLC, Lupin Ltd., Lupin Pharmaceuticals, Inc., and Lupin Inc, notified the Court that they had reached a settlement-in-principle with the class action plaintiffs. On April 19, 2023, the Court held a hearing on a motion for preliminary approval of this proposed settlement. On May 12, 2023, the Court granted the motion for preliminary approval of the proposed settlement. On January 11, 2024, the Court held a hearing on the motion for final approval of the proposed settlement. The Court deferred ruling and scheduled a further hearing for final approval of the proposed settlement on April 17, 2024. During February and March 2024, the parties notified the Court of settlements between certain non-class action plaintiffs and each of Amneal and Lupin, and the Court dismissed those plaintiffs’ claims against the applicable parties. On April 17, 2024, the Court issued an order granting the motion for final approval of the settlement between the class action plaintiffs, Amneal, and Lupin.

On December 11, 2023, Blue Cross and Blue Shield of Florida, Inc. and Health Options, Inc. filed a lawsuit in the United States District Court for the Middle District of Florida against the Company Defendants, Hikma Pharmaceuticals plc, Hikma Pharmaceuticals USA Inc., Hikma Labs, Inc., and Eurohealth (USA), Inc., raising similar allegations. On January 23, 2024, the Blue Cross Florida case was transferred to the United States District Court for the Northern District of California and consolidated with the above referenced multidistrict litigation for pretrial purposes.

On May 9, 2022, Aetna filed a lawsuit in the Superior Court of California for the County of Alameda against the Company Defendants, Hikma Pharmaceuticals plc, Hikma Pharmaceuticals USA Inc., Hikma Labs, Inc., Eurohealth (USA), Inc., Amneal Pharmaceuticals LLC, Par Pharmaceutical, Inc., Lupin Ltd., Lupin Pharmaceuticals, Inc., and Lupin Inc, raising similar allegations. On December 27, 2022, the Court granted in part and denied in part our motion to dismiss Aetna’s complaint. As a result of that ruling, the generic defendants have been dismissed from the case, and certain of Aetna’s claims against Jazz have been dismissed. On January 27, 2023, Aetna filed an amended complaint against Jazz. On March 22, 2023, we filed motions to dismiss and to strike portions of the amended complaint. On June 26, 2023, the Court granted our motions, and granted Aetna leave to further amend its complaint. On November 17, 2023, Aetna filed its second amended complaint. On February 2, 2024, we filed our answer to the second amended complaint and Hikma filed a motion to quash service. The

26

---

Table of Contents

Court held hearings on Hikma’s motion on December 4, 2024 and June 4, 2025. Trial in this case is scheduled for June 16, 2026.

The plaintiffs in certain of these lawsuits are seeking to represent a class of direct purchasers of Xyrem, and the plaintiffs in the remaining lawsuits are seeking to represent a class of indirect purchasers of Xyrem. Each of the lawsuits generally alleges violations of U.S. federal and state antitrust, consumer protection, and unfair competition laws in connection with the Company Defendants’ conduct related to Xyrem, including actions leading up to, and entering into, patent litigation settlement agreements with each of the other named defendants. Each of the lawsuits seeks monetary damages, exemplary damages, equitable relief against the alleged unlawful conduct, including disgorgement of profits and restitution, and injunctive relief. It is possible that additional lawsuits will be filed against the Company Defendants making similar or related allegations. If the plaintiffs were to be successful in their claims, they may be entitled to injunctive relief or we may be required to pay significant monetary damages, which could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

We recognized an expense of $172.0 million within selling, general and administrative expenses in our condensed consolidated statements of income (loss) for the six months ended June 30, 2025 for charges related to the resolution of a portion of the Xyrem antitrust litigation, including the class settlement.

Patent Infringement Litigation

Avadel Litigation

On May 13, 2021, we filed a patent infringement suit against Avadel, and several of its corporate affiliates in the United States District Court for the District of Delaware. The suit alleges that Avadel’s Lumryz will infringe five of our patents related to controlled release formulations of oxybate and the safe and effective distribution of oxybate. The suit seeks an injunction to prevent Avadel from launching a product that would infringe these patents, and an award of monetary damages if Avadel does launch an infringing product. Avadel filed an answer to the complaint and counterclaims asserting that the patents are invalid or not enforceable, and that its product will not infringe our patents. Avadel filed a motion for partial judgment on the pleadings on its counterclaim that one of our patents should be delisted from the Orange Book. On November 18, 2022, the Court issued an order that we delist the patent from the Orange Book. On November 22, 2022, we filed a notice of appeal to the United States Court of Appeals for the Federal Circuit. The Federal Circuit temporarily stayed the District Court’s delisting order. On February 24, 2023, the Federal Circuit affirmed the District Court’s delisting order, lifted the temporary stay, and gave Jazz 14 days to request that FDA delist the patent from the Orange Book. Jazz complied with the Federal Circuit’s order and requested delisting on February 28, 2023. On March 3, 2023, we and Avadel stipulated to the dismissal without prejudice of the claims and counterclaims related to infringement and validity of the delisted patent in both this suit and a later-filed suit described below related to the same patent.

On August 4, 2021, we filed an additional patent infringement suit against Avadel in the United States District Court for the District of Delaware. The second suit alleges that Avadel’s Lumryz will infringe a newly-issued patent related to sustained-release formulations of oxybate. The suit seeks an injunction to prevent Avadel from launching a product that would infringe this patent, and an award of monetary damages if Avadel does launch an infringing product. Avadel filed an answer to the complaint and counterclaims asserting that the patents are invalid or not enforceable, and that its product will not infringe our patents.

On November 10, 2021, we filed an additional patent infringement suit against Avadel in the United States District Court for the District of Delaware. The third suit alleges that Avadel’s Lumryz will infringe a newly-issued patent related to sustained-release formulations of oxybate. The suit seeks an injunction to prevent Avadel from launching a product that would infringe this patent, and an award of monetary damages if Avadel does launch an infringing product. Avadel filed an answer to the complaint and counterclaims asserting that the patents are invalid or not enforceable, and that its product will not infringe our patents.

On April 14, 2022, Avadel sued us in the United States District Court for the District of Delaware. Avadel’s suit alleges that we misappropriated trade secrets related to Avadel’s once-nightly sodium oxybate development program and breached certain contracts between the parties. Avadel seeks monetary damages, an injunction preventing us from using Avadel’s confidential information, and an order directing the United States Patent and Trademark Office to modify the inventorship of one of our oxybate patents. On July 8, 2022, we filed a motion for judgment on the pleadings, which the Court denied on July 18, 2023. The denial is not a ruling that Jazz misappropriated Avadel‘s trade secrets or breached any contract. The case will go forward in discovery and the Court instructed the parties to submit a proposed scheduling order.

On June 7, 2022, we received notice from Avadel that it had filed a "paragraph IV certification" regarding one patent listed in the Orange Book for Xyrem. A paragraph IV certification is a certification by a generic applicant that alleges that patents covering the branded product are invalid, unenforceable, and/or will not be infringed by the manufacture, use or sale of the generic product. On July 15, 2022, we filed an additional lawsuit against Avadel asserting infringement of that patent. The

27

---

Table of Contents

suit alleges that the filing of Avadel’s application for approval of FT218 is an act of infringement, and that Avadel’s product would infringe the patent if launched. The suit seeks an injunction to prevent Avadel from launching a product that would infringe the patent, and an award of damages if Avadel does launch an infringing product. Avadel filed an answer to the complaint and counterclaims asserting that the patent is invalid, that its product would not infringe, and that by listing the patent in the Orange Book, we engaged in unlawful monopolization in violation of the Sherman Act. On December 9, 2022, we filed a motion to dismiss Avadel’s counterclaims. On June 29, 2023, we filed a motion seeking leave to supplement our motion to dismiss, as well as a motion to stay discovery pending resolution of the motion to dismiss. As noted above, on March 3, 2023, we and Avadel stipulated to the dismissal without prejudice of the claims and counterclaims related to infringement and validity of the delisted patent.

On November 1, 2023, the Court held a claim construction hearing relating to disputed terms in the asserted patents. On December 15, 2023, the Court issued a written opinion and order resolving the parties’ remaining claim construction disputes. On November 20, 2023, we and Avadel each filed motions for summary judgment. On February 14, 2024, the Court issued a written opinion and order denying both parties’ motions for summary judgment.

Trial regarding our patent infringement claims against Avadel began on February 26, 2024, and concluded on March 4, 2024, with the jury finding both of our asserted patents valid, and awarding us damages for infringement for Avadel’s past sales of Lumryz. On April 12, 2024, we filed a motion for a permanent injunction and ongoing royalties. On August 27, 2024, the Court granted our motion for an injunction in part, and requested additional briefing about ongoing royalties. The issued injunction prevents Avadel from seeking FDA approval or marketing Lumryz for the treatment of idiopathic hypersomnia or other indications not already a part of Lumryz’s product labeling as of March 4, 2024, and enjoins Avadel from infringing in any way Claim 24 of our ’782 patent by making, using or selling Lumryz through and including the February 2036 expiration date of the ’782 patent, subject to certain exclusions including, among other things (i) for the treatment of narcolepsy, (ii) for the treatment of patients who have been prescribed Lumryz as of the effective date of the injunction conditioned on the payment of an amount to be determined and (iii) in clinical trials and studies ongoing as of the effective date of the injunction. The Court also granted our motion for an ongoing royalty for any future sale of Lumryz to patients with narcolepsy at a rate to be determined based upon further briefing by the parties on the appropriate ongoing rate above 3.5%. Avadel appealed this injunction to the United States Court of Appeals for the Federal Circuit. The Federal Circuit held oral argument on this appeal on February 7, 2025, and on May 6, 2025, published its opinion in which it reversed-in-part, vacated-in-part, and remanded to the District Court for reconsideration in light of the Federal Circuit’s opinion.

The Court scheduled a trial regarding Avadel’s counterclaims for unlawful monopolization for November 3, 2025 and a trial regarding Avadel’s trade secret misappropriation claims for December 15, 2025. On March 13, 2024 and March 19, 2024, we filed motions to stay Avadel’s unlawful monopolization counterclaim and trade secret claims, respectively, pending resolution of post-trial motions and potential appeals in the patent infringement suit. On May 24, 2024, the Court denied the motion to stay the unlawful monopolization counterclaim and the previously-filed motion to dismiss the same. On June 7, 2024, we filed a motion for reargument or, in the alternative, to certify the decision for interlocutory appeal. That motion remains pending and no hearing date has been set. The Court stayed Avadel’s trade secret misappropriation claims pending appeal of the injunction in the related patent matter. We filed a further motion to stay the unlawful monopolization counterclaims. On May 29, 2025, the Court denied our supplemental motion to stay the unlawful monopolization counterclaims. On June 17, 2025, we filed a petition for a writ of mandamus with the United States Court of Appeals for the Third Circuit seeking relief from the Court’s denial of the supplemental motion to stay. On July 8, 2025, the Third Circuit denied the petition.

Following the Federal Circuit’s decision in the patent matter, the Court lifted the stay of Avadel’s trade secret misappropriation claims and scheduled trial in that matter for February 7, 2028.

On July 21, 2022, Avadel filed a lawsuit against FDA in the United States District Court for the District of Columbia, challenging FDA’s determination that Avadel was required to file a paragraph IV certification regarding one of our Orange Book listed patents. Avadel filed a motion for preliminary injunction or, in the alternative, summary judgment, seeking relief including a declaration that FDA’s decision requiring patent certification was unlawful, an order setting aside that decision, an injunction prohibiting FDA from requiring such certification as a precondition to approval of its application for FT218, and an order requiring FDA to take final action on Avadel’s application for approval of FT218 within 14 days of the Court’s ruling. On July 27, 2022, we filed a motion to intervene in that case, which the Court granted. The Court held a hearing on the parties’ respective motions for summary judgment on October 7, 2022. On November 3, 2022, the Court granted our and FDA’s motions for summary judgment and denied Avadel’s motion.

From December 2024 through April 2025, Avadel filed a series of patent infringement suits against us in the United States District Court for the District of Delaware. The suits allege that Jazz’s sales of Xywav infringe on certain newly-issued Avadel patents, and Avadel seeks an award of monetary damages. No trial date has been set for these matters.

28

---

Table of Contents

Xywav Patent Litigation

In June 2021, we received notice from Lupin, that it has filed with FDA an ANDA, for a generic version of Xywav. The notice from Lupin included a paragraph IV certification with respect to ten of our patents listed in FDA’s Orange Book for Xywav on the date of our receipt of the notice. The asserted patents relate generally to the composition and method of use of Xywav, and methods of treatment when Xywav is administered concomitantly with certain other medications.

In July 2021, we filed a patent infringement suit against Lupin in the United States District Court for the District of New Jersey. The complaint alleges that by filing its ANDA, Lupin has infringed ten of our Orange Book listed patents. We are seeking a permanent injunction to prevent Lupin from introducing a generic version of Xywav that would infringe our patents. As a result of this lawsuit, we expect that a stay of approval of up to 30 months will be imposed by FDA on Lupin's ANDA. In June 2021, FDA recognized seven years of Orphan Drug Exclusivity for Xywav through July 21, 2027. On October 4, 2021, Lupin filed an answer to the complaint and counterclaims asserting that the patents are invalid or not enforceable, and that its product, if approved, will not infringe our patents.

In April 2022, we received notice from Lupin that it had filed a paragraph IV certification regarding a newly-issued patent listed in the Orange Book for Xywav. On May 11, 2022, we filed an additional lawsuit against Lupin in the United States District Court for the District of New Jersey alleging that by filing its ANDA, Lupin infringed the newly-issued patent related to a method of treatment when Xywav is administered concomitantly with certain other medications. The suit seeks a permanent injunction to prevent Lupin from introducing a generic version of Xywav that would infringe our patent. On June 22, 2022, the Court consolidated the two lawsuits we filed against Lupin.

In November 2022, we received notice from Lupin that it had filed a paragraph IV certification regarding a newly-issued patent listed in the Orange Book for Xywav. On January 19, 2023, we filed an additional lawsuit against Lupin in the United States District Court for the District of New Jersey alleging that by filing its ANDA, Lupin infringed the newly-issued patent referenced in its November 2022 paragraph IV certification, as well as another patent that issued in January 2023. The suit seeks a permanent injunction to prevent Lupin from introducing a generic version of Xywav that would infringe the two patents in suit. On February 15, 2023, the Court consolidated the new lawsuit with the two suits we previously filed against Lupin. No trial date has been set in the consolidated case against Lupin.

In February 2023, we received notice from Teva that it had filed with FDA an ANDA for a generic version of Xywav. The notice from Teva included a paragraph IV certification with respect to thirteen of our patents listed in FDA’s Orange Book for Xywav on the date of the receipt of the notice. The asserted patents relate generally to the composition and method of use of Xywav, and methods of treatment when Xywav is administered concomitantly with certain other medications.

In March 2023, we filed a patent infringement suit against Teva in the United States District Court for the District of New Jersey. The complaint alleges that by filing its ANDA, Teva has infringed thirteen of our Orange Book listed patents. We are seeking a permanent injunction to prevent Teva from introducing a generic version of Xywav that would infringe our patents. As a result of this lawsuit, we expect that a stay of approval of up to 30 months will be imposed by FDA on Teva’s ANDA. On May 23, 2023, Teva filed an answer to the complaint and counterclaims asserting that the patents are invalid or not enforceable, and that its product, if approved, will not infringe our patents.

On December 15, 2023, based on a stipulation between all parties, the Court consolidated the Lupin lawsuits and the Teva lawsuit for all purposes. No trial date has been set in the consolidated case.

In July 2024, we received notices from Lupin and Teva that they had each filed a paragraph IV certification regarding a newly-issued patent listed in the Orange Book for Xywav. On August 27, 2024, we filed an additional lawsuit in the United States District Court for the District of New Jersey against each of Lupin and Teva, alleging that, by filing its ANDA, each party infringed the newly-issued patent related to a method of treatment using Xywav. The suits seek orders that the effective date of FDA approval of each defendant’s application shall be a date no earlier than the expiration of the newly-issued patent.

Zepzelca Patent Litigation

In July and August 2024, we received notices from the Zepzelca ANDA Filers that they have each filed with FDA an ANDA for a generic version of Zepzelca (lurbinectedin). As of the date of this filing, we are not aware of other ANDA filers. The notices from the Zepzelca ANDA Filers each included a paragraph IV certification with respect to a patent listed in the Orange Book for Zepzelca on the date of the receipt of the notice. The listed patent relates to the drug substance, drug product and approved use of Zepzelca. Jazz is the exclusive licensee to this Zepzelca patent pursuant to an agreement with PharmaMar. A paragraph IV certification is a certification by a generic applicant that alleges that the patent covering the branded product is invalid, unenforceable, and/or will not be infringed by the manufacture, use or sale of the generic product.

On September 11, 2024, we and PharmaMar filed a patent infringement suit against the Zepzelca ANDA Filers in the United States District Court for the District of New Jersey. The complaint alleges that by filing their ANDAs, the Zepzelca

29

---

Table of Contents

ANDA Filers have infringed the Orange Book listed patent for Zepzelca, and seeks an order that the effective date of FDA approval of the ANDAs shall be a date no earlier than the expiration of the asserted patent.

In December 2024, we received the Zepzelca ANDA Filers’ answers to the complaint. The answers include defenses and counterclaims asserting that the Zepzelca ANDA Filers’ products, if launched, would not infringe our patents and that our patents are invalid. No trial date has been set in this matter.

On March 26, 2025, we and Sandoz stipulated to the dismissal of our lawsuit against Sandoz without prejudice.

On September 12, 2024, we and PharmaMar filed a patent infringement suit against RK Pharma, in the United States District Court for the District of Delaware. The complaint alleges that by filing its ANDA, RK Pharma has infringed the Orange Book listed patent for Zepzelca, and seeks an order that the effective date of FDA approval of RK Pharma’s ANDA shall be no earlier than the expiration of the asserted patent. On November 13, 2024, we voluntarily dismissed this action against RK Pharma in the United States District Court for the District of Delaware. RK Pharma remains a defendant in the litigation referenced above in the United States District Court for the District of New Jersey.

Defitelio Patent Litigation

In March 2025, we received a notice from Almaject that it had filed with FDA an ANDA for a generic version of Defitelio (defibrotide sodium). The notice from Almaject included a paragraph IV certification respect to certain of our patents listed in FDA’s Orange Book for Defitelio on the date of the notice. The listed patents relate generally to the Defitelio drug product and its approved use. On April 16, 2025, we filed a patent infringement lawsuit against Almaject in the United States District Court for the District of New Jersey. The complaint alleges that by filing its ANDA, Almaject has infringed certain of our Orange Book listed patents, and seeks an order that the effective date of FDA approval for the Almaject ANDA shall be on a date no earlier than the expiration of the last to expire of the asserted patents. As a result of this lawsuit, we expect that a stay of approval of up to 30 months will be imposed by FDA on Almaject’s ANDA.

FDA Litigation

On June 22, 2023, we filed a complaint in the United States District Court for the District of Columbia seeking a declaration that FDA’s approval on May 1, 2023, of the NDA for Avadel's Lumryz was unlawful. In the complaint, we alleged that FDA acted outside its authority under the Orphan Drug Act, when, despite ODE protecting Jazz’s low-sodium oxybate product Xywav, FDA approved the Lumryz NDA and granted Lumryz ODE based on FDA’s finding that Lumryz makes a major contribution to patient care and is therefore clinically superior to Xywav and Xyrem. Jazz further alleged that, in doing so, FDA failed to follow its own regulations, failed to follow established agency policy without providing a reasoned explanation for the departure, reversed prior decisions by its own staff and experts without a reasoned explanation, and disregarded the relevant scientific literature and data. The complaint, filed pursuant to the Administrative Procedure Act, asked the Court to vacate and set aside FDA’s approval of the Lumryz NDA and sought a declaration that FDA’s approval of the Lumryz NDA was arbitrary, capricious, an abuse of discretion and otherwise not in accordance with law and that approval of the Lumryz NDA was in excess of FDA’s statutory authority and was made without observance of procedure required by law.

On September 15, 2023, we filed a motion for summary judgment. On October 20, 2023, Avadel and FDA filed cross motions for summary judgment. Oral argument on these motions was held on May 10, 2024 and on October 30, 2024, the District Court issued an order denying Jazz’s motion for summary judgment and granting Avadel’s and FDA’s cross-motions for summary judgment. Jazz appealed the matter to the United States Court of Appeals for the District of Columbia Circuit. We filed our opening appeal brief on January 31, 2025 and the D.C. Circuit held oral argument on the appeal on May 5, 2025. On June 27, 2025, the D.C. Circuit affirmed District Court’s ruling.

Qui tam matter

In July 2022, we received a subpoena from the USAO for the District of Massachusetts requesting documents related to Xyrem and U.S. Patent No. 8,772,306 (“Method of Administration of Gamma Hydroxybutyrate with Monocarboxylate Transporters”), product labeling changes for Xyrem, communications with FDA and the USPTO, pricing of Xyrem, and other related documents. On July 18, 2024, the United States District Court for the District of Massachusetts unsealed a qui tam whistleblower lawsuit underlying the USAO’s subpoena, captioned 1:21-cv-10891-PBS and originally filed under seal on May 27, 2021. The public docket in this matter indicates that on May 24 and June 7, 2024, respectively, the United States and a number of states named in the whistleblower complaint declined to intervene in this matter. As such, private whistleblower litigation will proceed in the United States District Court for the District of Massachusetts. The Court set a deadline of September 1, 2024, for the plaintiff to file an amended complaint, and December 2, 2024, for us to file a motion to dismiss the amended complaint. The plaintiff filed the amended complaint on September 1, 2024. We filed our motion to dismiss on December 2, 2024. The Court held oral argument on the motion to dismiss on April 2, 2025.

30

---

Table of Contents

From time to time, we are involved in legal proceedings arising in the ordinary course of business. We believe there is no other litigation pending that could have, individually or in the aggregate, a material adverse effect on our results of operations or financial condition.

Chimerix Acquisition Litigation

On March 21, 2025, Chimerix filed a Recommendation Statement with the SEC in relation to the proposed acquisition of Chimerix by Jazz. Also on March 21, 2025, Jazz disseminated a Tender Offer Statement to Chimerix shareholders in relation to the proposed transaction.

Following filing of the filing and dissemination of the Tender Offer Documents, Jazz Pharmaceuticals plc, its wholly-owned subsidiary Pinetree Acquisition Sub, Inc., Chimerix Inc., the Chimerix Board of Directors, Centerview Partners LLC, were named as defendants in the Rosenthal Lawsuit in the Supreme Court of the State of New York, County of Chemung. In addition to the Rosenthal Lawsuit, the Chimerix Shareholder Litigation was filed in the Supreme Court of the State of New York, County of New York. Collectively, in the Chimerix Transaction Litigation, the plaintiffs alleged that the Tender Offer Documents omitted material information and contained misrepresentations, in violation of various New York and North Carolina laws. The plaintiffs in the Chimerix Transaction Litigation sought various remedies, including injunctive relief to prevent the consummation of the Chimerix Acquisition unless certain allegedly material information was disclosed, or in the alternative, rescission or damages.

On April 7, 2025, Chimerix filed an amended Recommendation Statement and Jazz filed an amended Tender Offer Document, each containing supplemental disclosures related to the Chimerix Acquisition. Pursuant to a memorandum of understanding between the parties, the Rosenthal Lawsuit was dismissed on April 7, 2025. The remaining lawsuits in the Chimerix Transaction Litigation were dismissed on June 26, 2025.

11. Shareholders’ Equity

Share Repurchase Program

In July 2024, our board of directors authorized the New Repurchase Program, to repurchase ordinary shares having an aggregate purchase price of $500.0 million, exclusive of any brokerage commissions. Under the New Repurchase Program, which has no expiration date, we may repurchase ordinary shares from time to time by any methods and/or structures permitted by applicable law. The timing and amount of repurchases will depend on a variety of factors, including the price of our ordinary shares, alternative investment opportunities, restrictions under the Amended Credit Agreement and the indenture for our Secured Notes, corporate and regulatory requirements and market conditions. The New Repurchase Program may be modified, suspended or discontinued at any time without our prior notice. The New Repurchase Program replaces and supersedes the Old Repurchase Program, a share repurchase program to repurchase ordinary shares having an aggregate purchase price of $1.5 billion, exclusive of any brokerage commissions. During the three and six months ended June 30, 2025, we spent a total of $125.0 million to repurchase 1.1 million of our ordinary shares, all under the New Repurchase Program, at a purchase price, including commissions, of $109.52 per share. During the three and six months ended June 30, 2024, we spent a total of $161.4 million to repurchase 1.5 million of our ordinary shares, all under the Old Repurchase Program, at a purchase price, including commissions, of $110.75 per share. As of June 30, 2025, the remaining amount authorized for repurchases under the New Repurchase Program was $225.0 million, exclusive of any brokerage commissions.

Accumulated Other Comprehensive Loss

The components of accumulated other comprehensive loss as of June 30, 2025 and December 31, 2024 were as follows (in thousands): 

			Net Unrealized Gain (Loss) From Hedging Activities						Foreign Currency Translation Adjustments						Total Accumulated Other Comprehensive Loss
Balance at December 31, 2024			$	740					$	(948,407)					$	(947,667)
Other comprehensive income before reclassifications			15						462,686						462,701
Amounts reclassified from accumulated other comprehensive loss			(802)						—						(802)
Other comprehensive income (loss), net			(787)						462,686						461,899
Balance at June 30, 2025			$	(47)					$	(485,721)					$	(485,768)

31

---

Table of Contents

During the six months ended June 30, 2025, other comprehensive income (loss) primarily reflects foreign currency translation adjustments, primarily due to the strengthening of the sterling and the euro against the U.S. dollar.

12. Net Income (Loss) per Ordinary Share

Basic net income (loss) per ordinary share is based on the weighted-average number of ordinary shares outstanding. Diluted net income (loss) per ordinary share is based on the weighted-average number of ordinary shares outstanding and potentially dilutive ordinary shares outstanding.

Basic and diluted net income (loss) per ordinary share were computed as follows (in thousands, except per share amounts):

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Numerator:
Net income (loss)			$	(718,470)					$	168,568					$	(811,011)					$	153,950
Effect of interest on assumed conversions of the 2026 Notes, net of tax			—						4,878						—						9,733
Net income (loss) for dilutive net income (loss) per ordinary share			$	(718,470)					$	173,446					$	(811,011)					$	163,683
Denominator:
Weighted-average ordinary shares used in per share calculations - basic			61,194						62,882						61,087						62,710
Dilutive effect of the 2026 Notes			—						6,418						—						6,418
Dilutive effect of employee equity incentive and purchase plans			—						325						—						556
Weighted-average ordinary shares used in per share calculations - diluted			61,194						69,625						61,087						69,684
Net income (loss) per ordinary share:
Basic			$	(11.74)					$	2.68					$	(13.28)					$	2.45
Diluted			$	(11.74)					$	2.49					$	(13.28)					$	2.35

Potentially dilutive ordinary shares from our employee equity incentive and purchase plans are determined by applying the treasury stock method to the assumed vesting of outstanding RSUs and PRSUs, the assumed exercise of share options and the assumed issuance of ordinary shares under our ESPP.

In July 2024, we irrevocably elected to fix the settlement method for exchanges of the 2026 Notes to a combination of cash and ordinary shares of Jazz Pharmaceuticals plc with a specified cash amount per $1,000 principal amount of 2026 Notes exchanged equal to or in excess of $1,000. As a result of the election, an exchanging holder will receive (i) up to $1,000 in cash per $1,000 principal amount of 2026 Notes exchanged and (ii) cash, ordinary shares, or any combination thereof, at our election, in respect of the remainder, if any, of its exchange obligation in excess of $1,000 per $1,000 principal amount of 2026 Notes exchanged. The potential issue of ordinary shares upon exchange of the 2026 Notes was anti-dilutive and had no impact on diluted net loss per ordinary share for the three and six months ended June 30, 2025.

For the 2030 Notes, we are required to settle the principal amount in cash and have the option to settle the conversion feature for the amount above the conversion price, or the conversion spread, in cash, ordinary shares or a combination of cash and ordinary shares. The conversion spread will have a dilutive impact on diluted net income per ordinary share when the average market price of our ordinary shares for a given period exceeds the conversion price, of approximately $153.05 per ordinary share, of the 2030 Notes. The average market price of our ordinary shares for the three and six months ended June 30, 2025 did not exceed the conversion price of the 2030 Notes.

32

---

Table of Contents

The following table represents the weighted-average ordinary shares that were excluded from the calculation of diluted net income (loss) per ordinary share for the periods presented because including them would have an anti-dilutive effect (in thousands):

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Employee equity incentive and purchase plans			6,805						6,928						5,345						4,820

13. Revenues

The following table presents a summary of total revenues (in thousands): 

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Xywav			$	415,321					$	368,472					$	760,125					$	683,772
Xyrem			35,349						62,180						72,590						126,412
Epidiolex/Epidyolex			251,730						247,102						469,467						445,818
Sativex			4,615						6,383						10,022						9,118
Total Neuroscience			707,015						684,137						1,312,204						1,265,120
Rylaze/Enrylaze			100,659						107,829						194,892						210,579
Zepzelca			74,541						81,047						137,574						156,147
Defitelio/defibrotide			48,106						45,421						88,768						93,097
Vyxeos			44,851						43,012						74,395						75,035
Ziihera			5,991						—						7,966						—
Total Oncology			274,148						277,309						503,595						534,858
Other			4,408						2,698						9,190						6,268
Product sales, net			985,571						964,144						1,824,989						1,806,246
High-sodium oxybate AG royalty revenue			54,138						54,164						103,084						104,111
Other royalty and contract revenues			6,003						5,517						15,480						15,451
Total revenues			$	1,045,712					$	1,023,825					$	1,943,553					$	1,925,808

The following table presents a summary of total revenues attributed to geographic sources (in thousands): 

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
United States			$	936,283					$	924,592					$	1,734,797					$	1,732,806
Europe			82,763						82,159						165,801						153,514
All other			26,666						17,074						42,955						39,488
Total revenues			$	1,045,712					$	1,023,825					$	1,943,553					$	1,925,808

The following table presents a summary of the percentage of total revenues from customers that represented more than 10% of our total revenues: 

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
ESSDS			43		%				42		%				42		%				42		%
ASD			11		%				10		%				11		%				8		%
McKesson			10		%				12		%				11		%				12		%

33

---

Table of Contents

Financing and payment

Our payment terms vary by the type and location of our customer but payment is generally required in a term ranging from 30 to 65 days.

14. Share-Based Compensation

Share-based compensation expense related to RSUs, PRSUs, grants under our ESPP and share options was as follows (in thousands): 

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Selling, general and administrative			$	40,999					$	35,137					$	82,673					$	75,350
Research and development			20,651						17,272						41,581						36,103
Cost of product sales			2,851						4,245						7,900						6,642
Total share-based compensation expense, pre-tax			64,501						56,654						132,154						118,095
Income tax benefit from share-based compensation expense			(12,259)						(9,629)						(21,793)						(13,028)
Total share-based compensation expense, net of tax			$	52,242					$	47,025					$	110,361					$	105,067

15. Income Taxes

Our income tax benefit was $17.2 million and $35.0 million for the three and six months ended June 30, 2025, respectively, compared to an income tax benefit of $30.7 million and $19.0 million for the same periods in 2024, relating to tax arising on income or losses in Ireland, the U.K., the U.S. and certain other foreign jurisdictions and Pillar Two top-up taxes, offset by deductions on subsidiary equity, patent box and foreign derived intangible income benefits and tax credits. The income tax benefit in the six months ended June 30, 2025, was primarily due to the tax impact of certain Xyrem antitrust litigation settlements.

Our net deferred tax liability is primarily related to acquired intangible assets, and is net of deferred tax assets related to U.S. federal and state tax credits, U.S. federal and state and foreign net operating loss carryforwards and other temporary differences. We maintain a valuation allowance against certain deferred tax assets. Each reporting period, we evaluate the need for a valuation allowance on our deferred tax assets by jurisdiction and adjust our estimates as more information becomes available.

We are required to recognize the financial statement effects of a tax position when it is more likely than not, based on the technical merits, that the position will be sustained upon examination. As a result, we have recorded an unrecognized tax benefit for certain tax benefits which we judge may not be sustained upon examination. We file income tax returns in multiple tax jurisdictions, the most significant of which are Ireland, the U.K. and the U.S. (both at the federal level and in various state jurisdictions). For Ireland, we are no longer subject to income tax examinations by taxing authorities for the years prior to 2020. For the U.K., we are no longer subject to income tax examinations by taxing authorities for the years prior to 2016. The U.S. jurisdictions generally have statute of limitations three to four years from the later of the return due date or the date when the return was filed. However, in the U.S. (at the federal level and in most states), carryforwards that were generated in 2020 and earlier may still be adjusted upon examination by the taxing authorities. One of our subsidiaries was under examination by the Luxembourg tax authorities for the years ended December 31, 2017, 2018 and 2019. In October 2022 and in January 2023, we received tax assessment notices from the Luxembourg tax authorities for all years under examination relating to certain transfer pricing and other adjustments. In June 2025, the Luxembourg tax authorities formally withdrew all assessments for the periods under examination.

The Government of Ireland, the jurisdiction in which Jazz Pharmaceuticals Plc is incorporated, transposed the Global Minimum Tax Pillar Two rules into domestic legislation as part of the Finance Act. The Finance Act closely follows the EU Minimum Tax Directive and certain OECD Guidance released to date. The Company is within the scope of these rules, which took effect from January 1, 2024. Under the legislation, we are liable to pay a top-up tax for the difference between the Pillar Two effective tax rate per jurisdiction and the 15% minimum rate. The rules on how to calculate the Pillar Two effective tax rate are detailed and highly complex and specific adjustments envisaged in the Pillar Two legislation can give rise to different effective tax rates compared to those calculated for accounting purposes. We account for Pillar Two top-up taxes as a current tax when they are incurred. The income tax benefit for the six months ended June 30, 2025 includes an amount for forecasted Pillar Two top-up taxes, as required under the applicable rules. The proportion of our profit before tax which is subject to the

34

---

Table of Contents

top-up tax and our exposure to Pillar Two top-up taxes in future years will depend on factors such as future revenues, costs and foreign currency exchange rates. We will continue to monitor changes in law and guidance in relation to Pillar Two.

35

---

Table of Contents

Item 2.Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion of our financial condition and results of operations should be read in conjunction with the condensed consolidated financial statements and the notes to condensed consolidated financial statements included elsewhere in this Quarterly Report on Form 10‑Q. This discussion contains forward-looking statements that involve risks and uncertainties. When reviewing the discussion below, you should keep in mind the substantial risks and uncertainties that could impact our business. In particular, we encourage you to review the risks and uncertainties described in “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, as supplemented by the risks and uncertainties described in "Risk Factors" Item 1A. Risk Factors in Part II of this Quarterly Report on Form 10-Q. These risks and uncertainties could cause actual results to differ materially from those projected in forward-looking statements contained in this report or implied by past results and trends. Forward-looking statements are statements that attempt to forecast or anticipate future developments in our business, financial condition or results of operations. See the “Cautionary Note Regarding Forward-Looking Statements” that appears at the end of this discussion. These statements, like all statements in this report, speak only as of the date of this Quarterly Report on Form 10‑Q (unless another date is indicated), and we undertake no obligation to update or revise these statements in light of future developments.

Overview

Jazz Pharmaceuticals plc is a global biopharmaceutical company whose purpose is to innovate to transform the lives of patients and their families. We are dedicated to developing life-changing medicines for people with serious diseases - often with limited or no therapeutic options. We have a diverse portfolio of marketed medicines, including leading therapies for sleep disorders and epilepsy, and a growing portfolio of cancer treatments. Our patient-focused and science-driven approach powers pioneering research and development advancements across our robust pipeline of innovative therapeutics in oncology and neuroscience.

Our strategy for growth is rooted in executing commercial launches and ongoing commercialization initiatives, advancing robust R&D programs and delivering impactful clinical results, effectively deploying capital to strengthen the prospects of achieving our short- and long-term goals through strategic corporate development, and delivering strong financial performance. We focus on patient populations with high unmet needs. We seek to identify and develop differentiated therapies for these patients that we expect will be long-lived assets and that we can support with an efficient commercialization model. In addition, we leverage our efficient, scalable operating model and integrated capabilities across our global infrastructure to effectively reach patients around the world.

Our strategy to deliver sustainable growth and enhanced value continues to be focused on:

•Strong commercial execution to drive diversified revenue growth and address unmet medical needs of our patients across our product portfolio, which focuses on neuroscience and oncology medicines;

•Expanding and advancing our pipeline to achieve a valuable portfolio of durable, highly differentiated products;

•Continuing to build a flexible, efficient and productive development engine for targeted therapeutic areas to identify and progress early-, mid- and late-stage assets;

•Identifying and acquiring novel product candidates and approved therapies to complement our existing pipeline and commercial portfolio;

•Investing in an efficient, scalable operating model and differentiated capabilities to enable growth; and

•Unlocking further value through indication expansion and entry into global markets.

36

---

Table of Contents

In 2025, consistent with our strategy, we are continuing to focus on research and development activities within our neuroscience and oncology therapeutic areas.

Our lead marketed products, listed below, are approved in countries around the world to improve patient care.

Product			Indications			Initial Approval Date			Markets
NEUROSCIENCE
Xywav® (calcium, magnesium, potassium, and sodium oxybates)			Treatment of cataplexy or EDS in patients seven years of age and older with narcolepsy.			July 2020			U.S.
			Treatment of IH in adults.			August 2021			U.S.
			Treatment of cataplexy in patients with narcolepsy.			May 2023			Canada
Epidiolex® (cannabidiol)			Treatment of seizures associated with LGS, DS, or TSC in patients 1 year of age and older.			June 2018			U.S., Israel
Epidyolex® (cannabidiol)			For adjunctive therapy of seizures associated with LGS or DS, in conjunction with clobazam, for patients 2 years of age and older.1			September 2019			EU, Great Britain, EEA, Switzerland, Australia, other markets
			For adjunctive therapy of seizures associated with TSC for patients 2 years of age and older.			April 2021			EU, Great Britain, EEA and Switzerland
Epidiolex® (cannabidiol)			For adjunctive therapy of seizures associated with LGS, DS or TSC for patients 2 years of age and older.			November 2023			Canada
ONCOLOGY
Rylaze® (asparaginase erwinia chrysanthemi (recombinant)- rywn)			A component of a multi-agent chemotherapeutic regimen for the treatment of ALL, and LBL, in adult and pediatric patients 1 month or older who have developed hypersensitivity to E. coli-derived asparaginase.			June 2021			U.S.
Rylaze® (crisantaspase recombinant)			A component of a multi-agent chemotherapeutic regimen for the treatment of ALL and LBL, in adults and pediatric patients 1 year or older who have developed hypersensitivity to E. coli-derived asparaginase.			September 2022			Canada
Enrylaze® (recombinant crisantaspase)			A component of a multi-agent chemotherapeutic regimen for the treatment of ALL and LBL in adult and pediatric patients (1 month and older) who have developed hypersensitivity or silent inactivation to E. coli-derived asparaginase.			September 2023			EU, Great Britain, Switzerland, other markets
Zepzelca® (lurbinectedin)			Treatment of adult patients with metastatic SCLC, with disease progression on or after platinum-based chemotherapy.			June 2020			U.S. (licensed from PharmaMar)2
			Treatment of adults with Stage III or metastatic SCLC who have progressed on or after platinum-containing therapy.			September 2021			Canada (licensed from PharmaMar)3
Ziihera® (zanidatamab-hrii)			Treatment of adults with previously treated, unresectable or metastatic HER2-positive (IHC 3+) BTC, as detected by an FDA-approved test.			November 2024			U.S. (licensed from Zymeworks)2
			Treatment of adults with unresectable locally advanced or metastatic HER2-positive (IHC3+) BTC previously treated with at least one prior line of systemic therapy.			June 2025			EU (licensed from Zymeworks)4

37

---

Table of Contents

1 The clobazam restriction limited to EU and Great Britain

2 Accelerated approval received from FDA

3 Conditional approval received from Health Canada

4 Conditional marketing authorization granted by EC

Neuroscience

We are the global leader in the development and commercialization of oxybate therapy for patients with sleep disorders. Xyrem was approved by FDA in 2002, and is indicated for treating cataplexy and EDS in patients seven years of age or older with narcolepsy. In 2020, we received FDA approval for Xywav for the treatment of cataplexy or EDS in patients seven years of age and older with narcolepsy. In August 2021, Xywav became the first and only therapy approved by FDA for the treatment of IH in adults. Xywav is an oxybate therapy that contains 92% less sodium than Xyrem. Xywav has become a standard of care for patients with narcolepsy and IH.

Since there is no cure for narcolepsy and long-term disease management is needed, we believe that Xywav represents an important therapeutic option for patients with this sleep disorder. Our commercial efforts are focused on educating patients and physicians about the lifelong impact of high sodium intake, and how the use of Xywav enables them to address what is a modifiable risk factor for cardiovascular morbidity. We view the adoption of Xywav in narcolepsy as a positive indication that physicians and patients appreciate the benefits of a low-sodium oxybate option.

In June 2021, FDA recognized seven years of ODE for Xywav in narcolepsy. ODE extends through January 2028. Nevertheless, Lumryz, a fixed-dose, high-sodium oxybate, was approved by FDA on May 1, 2023, for the treatment of cataplexy or EDS in adults with narcolepsy and was launched in the U.S. market by Avadel. FDA continues to recognize seven years of ODE for Xywav in narcolepsy. In connection with granting ODE, FDA stated that "Xywav is clinically superior to Xyrem by means of greater safety because Xywav provides a greatly reduced chronic sodium burden compared to Xyrem.” FDA's summary also stated that "the differences in the sodium content of the two products at the recommended doses will be clinically meaningful in reducing cardiovascular morbidity in a substantial proportion of patients for whom the drug is indicated." FDA has also recognized that the difference in sodium content between Xywav and Lumryz is likely to be clinically meaningful in all patients with narcolepsy and that Xywav is safer than Lumryz in all such patients. Lumryz has the same sodium content as Xyrem. Xywav is the only approved oxybate therapy that does not carry a warning and precaution related to high sodium intake.

On August 12, 2021, FDA approved Xywav for the treatment of IH in adults. Xywav remains the first and only FDA-approved therapy to treat IH. We initiated the U.S. commercial launch of Xywav for the treatment of IH in adults in November 2021. In January 2022, the company announced FDA recognized seven years of ODE for Xywav in IH that extends through August 2028. IH is a debilitating neurologic sleep disorder characterized by chronic EDS (the inability to stay awake and alert during the day resulting in the irrepressible need to sleep or unplanned lapses into sleep or drowsiness), severe sleep inertia, and prolonged and non-restorative nighttime sleep. An estimated 37,000 people in the U.S. have been diagnosed with IH and are actively seeking healthcare.

We have agreements in place for Xywav with all three major PBMs in the U.S. To date, we have entered into agreements with various entities and have achieved benefit coverage for Xywav in both narcolepsy and IH indications for approximately 90% of commercial lives.

We have seen strong adoption of Xywav in narcolepsy since its launch in November 2020, and increasing adoption in IH since its launch in November 2021. Exiting the second quarter of 2025, there were approximately 15,225 patients taking Xywav, including approximately 10,600 patients with narcolepsy and approximately 4,625 patients with IH.

We acquired Epidiolex (Epidyolex in certain markets outside the U.S.) in May 2021 as part of the GW Acquisition, which expanded our growing neuroscience business with a global, high-growth childhood-onset epilepsy franchise. Epidiolex was approved in the U.S. in June 2018 for the treatment of seizures associated with two rare and severe forms of epilepsy, LGS and DS, in patients two years of age and older, and subsequently approved in July 2020 for the treatment of seizures associated with TSC in patients one year of age and older. FDA also approved the expansion of all existing indications, LGS and DS, to patients one year of age and older. The rolling European launch of Epidyolex is also underway following EC approval in September 2019 for use as adjunctive therapy of seizures associated with LGS or DS, in conjunction with clobazam, for patients two years of age and older. The clobazam restriction is limited to the EU and Great Britain. Epidyolex is launched in all five key European markets: United Kingdom, Germany, Italy, Spain and France. Epidyolex was also approved for adjunctive therapy of seizures associated with TSC for patients 2 years of age and older in the EU in April 2021 and Great Britain in August 2021, and is approved or under review for this indication in other markets. Outside the U.S. and Europe, Epidiolex/Epidyolex is approved in Israel, Canada, Australia, New Zealand and Taiwan.

38

---

Table of Contents

Oncology

Rylaze was approved by FDA in June 2021 under the Real-Time Oncology Review program, and was launched in the U.S. in July 2021 for use as a component of a multi-agent chemotherapeutic regimen for the treatment of patients with ALL or LBL in pediatric and adult patients one month and older who have developed hypersensitivity to E. coli-derived asparaginase. Rylaze is the only recombinant erwinia asparaginase manufactured product approved in the U.S. that maintains a clinically meaningful level of asparaginase activity throughout the entire course of treatment. We developed Rylaze to address the needs of patients and health care providers for an innovative, high-quality erwinia asparaginase with reliable supply. The initial approved recommended dosage of Rylaze was for an IM administration of 25 mg/m2 every 48 hours. In November 2022, FDA approved an sBLA for a Monday/Wednesday/Friday 25/25/50 mg/m2 IM dosing schedule. In September 2023, the EC granted marketing authorization for JZP458 under the trade name Enrylaze®. This product has also been approved in Great Britain, Canada, Switzerland and Australia.

We acquired U.S. development and commercialization rights to Zepzelca in early 2020, and launched six months thereafter, with an indication for treatment of patients with SCLC with disease progression on or after platinum-based chemotherapy. Our education and promotional efforts are focused on SCLC-treating physicians. We are continuing to raise awareness of Zepzelca across academic and community cancer centers. In collaboration with Roche, we have an ongoing Phase 3 pivotal clinical trial of Zepzelca for use as maintenance therapy in first-line extensive-stage SCLC in combination with Tecentriq® (atezolizumab) following induction therapy with carboplatin, etoposide and Tecentriq. In October 2024, we announced positive top-line results from the trial showing a statistically significant and clinically meaningful benefit for Zepzelca and atezolizumab in combination in the first-line maintenance setting. In June 2025, we announced the FDA granted Priority Review of the sNDA to support this combination in the first-line maintenance setting with a PDUFA action date of October 7, 2025.

We acquired exclusive development and commercialization rights to Ziihera in 2022 through an exclusive licensing agreement with a subsidiary of Zymeworks providing development and commercialization rights to zanidatamab across all indications in the U.S., Europe, Japan and all other territories except for those Asia/Pacific territories previously licensed by Zymeworks. The term of the license agreement extends on a licensed product-by-licensed product and country-by-country basis until the expiration of the royalty term for such licensed product in such country. We have the right to terminate the amended license agreement at will upon a specified notice period, and either party can terminate the amended license agreement for the other party’s uncured material breach or bankruptcy.

Ziihera is a bispecific HER2-directed antibody that binds to two extracellular sites on HER2. Binding of zanidatamab-hrii with HER2 results in internalization leading to a reduction of the receptor on the tumor cell surface. In the U.S., Ziihera was granted accelerated approval by FDA in November 2024 and is indicated for the treatment of adults with previously treated, unresectable or metastatic HER2-positive (IHC 3+) BTC, as detected by an FDA-approved test. In June 2025, the EC granted conditional marketing authorization for Ziihera for the treatment of adults with unresectable locally advanced or metastatic HER2-positive (IHC3+) BTC previously treated with at least one prior line of systemic therapy.

Defitelio is the first and only approved treatment for patients with VOD, sVOD, or VOD with renal or pulmonary dysfunction following HSCT by regulatory authorities in the U.S., Europe, Japan and other markets. Utilization of Defitelio is in part driven by evolving treatment practices in HSCT, and we are continuing to educate healthcare professionals on the clinical profile of Defitelio and its role in treating VOD and/or sVOD following HSCT.

Vyxeos is a treatment for adults with newly-diagnosed t-AML, or AML-MRC. In March 2021, FDA approved a revised label to include a new indication to treat newly-diagnosed t-AML, or AML-MRC, in pediatric patients aged one year and older. We continue to expand into new markets internationally as the product receives approvals and reimbursement in relevant markets. In the U.S., with ongoing trends towards lower-intensity treatments and away from intensive chemotherapy regimens for AML, we have seen increasing competition from other therapeutic options.

Research and Development Progress

Our research and development activities encompass all stages of development and currently include clinical testing of new product candidates and activities related to clinical improvements of, or additional indications or new clinical data for, our existing marketed products. We also have active preclinical programs for novel therapies, including neuroscience and precision medicines in oncology. We are increasingly leveraging our growing internal research and development function, and we have also entered into collaborations with third parties for the research and development of innovative early-stage product candidates and have supported additional investigator-sponsored trials that are anticipated to generate additional data related to our products. We also seek out investment opportunities in support of the development of early- and mid-stage technologies in our therapeutic areas and adjacencies. We have a number of licensing and collaboration agreements with third parties, including biotechnology companies, academic institutions and research-based companies and institutions, related to preclinical and clinical research and development activities in hematology and in precision oncology, as well as in neuroscience.

39

---

Table of Contents

Within our oncology R&D program, in October 2022, we announced an exclusive licensing and collaboration agreement with Zymeworks providing us the right to acquire development and commercialization rights to Zymeworks' zanidatamab across all indications in the U.S., Europe, Japan and all other territories except for those Asia/Pacific territories previously licensed by Zymeworks. In December 2022, we exercised the option to continue with the exclusive development and commercialization rights to zanidatamab. Under the terms of the agreement, Zymeworks received an upfront payment of $50.0 million, and following the exercise of our option to continue the collaboration, a second, one-time payment of $325.0 million. Zymeworks is also eligible to receive regulatory and commercial milestone payments of up to $1.4 billion, for total potential payments of $1.76 billion. Zymeworks is eligible to receive tiered royalties between 10% and 20% on our net sales. Zanidatamab is a bispecific HER2-directed antibody that binds to two extracellular sites on HER2. Zanidatamab is currently being evaluated in multiple clinical trials as a treatment for patients with HER2-expressing cancers. Following positive data from a pivotal Phase 2 clinical trial evaluating zanidatamab monotherapy in patients with previously treated advanced or metastatic HER2-amplified BTC, we completed a BLA submission in second-line BTC in March 2024. In May 2024, FDA granted Priority Review of the BLA; we received FDA approval for this BLA in November 2024. In April 2025, we announced that CHMP adopted a positive opinion recommending the conditional marketing authorization of zanidatamab in 2L BTC. In June 2025, the EC granted conditional marketing authorization for Ziihera for the treatment of adults with unresectable locally advanced or metastatic HER2-positive (IHC3+) BTC previously treated with at least one prior line of systemic therapy. In addition, we have an ongoing Phase 3 randomized clinical trial evaluating zanidatamab in combination with chemotherapy plus or minus tislelizumab as a first-line treatment for HER2-expressing GEA, an ongoing Phase 2 trial examining zanidatamab in combination with chemotherapy in first-line patients with HER2-expressing metastatic GEA and an ongoing Phase 3 trial examining zanidatamab in first-line patients with HER2-positive BTC. In July 2024, we announced the initiation of the Phase 3 EmpowHER-BC-303 to evaluate zanidatamab plus chemotherapy or trastuzumab plus chemotherapy in patients with HER2-positive breast cancer whose disease has progressed on previous T-DXd treatment. There are also multiple ongoing clinical trials exploring zanidatamab in breast cancer and other HER2-expressing tumor types.

Our development plan for Zepzelca continues to progress. We are collaborating with Roche on a pivotal Phase 3 clinical trial evaluating Zepzelca in combination with Tecentriq for use as maintenance therapy in first-line extensive-stage SCLC. In October 2024, we announced positive top-line results from the trial showing a statistically significant and clinically meaningful benefit for Zepzelca and atezolizumab in combination in the first-line maintenance setting. In April 2025, we announced the submission of an sNDA to support this combination in the first-line maintenance setting. In June 2025, we announced the FDA granted Priority Review of the sNDA to support this combination in the first-line maintenance setting with a PDUFA action date of October 7, 2025. In December 2021, our licensor PharmaMar initiated a confirmatory trial in second-line SCLC. This ongoing three-arm trial is comparing Zepzelca as either monotherapy or in combination with irinotecan to investigator's choice of irinotecan or topotecan. Data from either the first-line trial of Zepzelca in combination with Tecentriq or the PharmaMar trial could serve to confirm clinical benefit of Zepzelca and secure full approval in the U.S.

In addition, we have an ongoing Phase 4 observational study to collect real world safety and outcome data in adult Zepzelca monotherapy patients with SCLC who progress on or after prior platinum-containing chemotherapy. Preliminary findings from this study presented at the 2024 World Conference on Lung Cancer demonstrated Zepzelca provided clinical benefit when administered as second-line SCLC therapy. The safety and tolerability profile observed in this study was consistent with prior findings, with no new safety signals reported.

In June 2022, we announced FDA had cleared our Investigational New Drug application for JZP815 and, in October 2022, we enrolled the first patient in a Phase 1 trial. JZP815 is an investigational stage pan-RAF kinase inhibitor that targets specific components of the mitogen-activated protein kinase pathway that, when activated by oncogenic mutations, can be a frequent driver of human cancer.

In April 2022, we announced that we had entered into a licensing and collaboration agreement with Werewolf to acquire exclusive global development and commercialization rights to Werewolf's investigational WTX-613, now referred to as JZP898. Under the terms of the agreement, we made an upfront payment of $15.0 million to Werewolf, and Werewolf is eligible to receive development, regulatory and commercial milestone payments of up to $1.26 billion. If approved, Werewolf is eligible to receive a tiered, mid-single-digit percentage royalty on net sales of JZP898. This transaction underscores our commitment to enhancing our pipeline to deliver novel oncology therapies to patients, and also provides us with an opportunity to expand into immuno-oncology. JZP898 is a differentiated, conditionally-activated IFNα INDUKINE™ molecule. We initiated a Phase 1 clinical trial of JZP898 in late 2023.

In April 2025, we completed the acquisition of Chimerix, Inc. for $944.2 million in cash, and Chimerix is now a wholly owned subsidiary of Jazz. The lead clinical asset acquired from Chimerix is dordaviprone, a novel first-in-class small molecule treatment in development for H3 K27M-mutant diffuse glioma, a rare, high-grade brain tumor that most commonly affects children and young adults. An NDA for accelerated approval of dordaviprone in recurrent H3 K27M-mutant diffuse glioma was accepted and granted Priority Review by FDA. FDA has set a target PDUFA action date of August 18, 2025. If approved in the U.S., dordaviprone may be eligible for a Rare Pediatric Disease PRV. Separately, dordaviprone is being studied in the

40

---

Table of Contents

ongoing Phase 3 ACTION trial, evaluating its use in newly diagnosed, non-recurrent H3 K27M-mutant diffuse glioma patients following radiation treatment, potentially extending this treatment option into the front-line setting.

Our neuroscience R&D efforts include an ongoing Phase 3 trial of Epidyolex for LGS, DS and TSC in Japan. In August 2024, we announced top-line results from the trial. The trial did not meet the primary efficacy endpoint of a pre-specified percentage change in indication-associated seizure frequency during the treatment period (up to 16 weeks) compared to baseline in Japanese pediatric patients; however, numeric improvements were observed in the primary and several secondary endpoints. No new safety signals were observed in the trial. We are continuing to collect data in Japanese patients and plan to engage with regulatory authorities in Japan regarding a potential NDA.

We are also pursuing early-stage activities related to the development of JZP324, an extended-release low sodium, oxybate formulation that we believe could provide a clinically meaningful option for narcolepsy patients.

In May 2022, we announced, that we had entered into a licensing agreement with Sumitomo to acquire exclusive development and commercialization rights in the U.S., Europe and other territories for JZP441, also known as DSP-0187, a potent, highly selective oral orexin-2 receptor agonist with potential application for the treatment of narcolepsy, IH and other sleep disorders. Under the terms of the agreement, we made an upfront payment of $50.0 million to Sumitomo, and Sumitomo is eligible to receive development, regulatory and commercial milestone payments of up to $1.09 billion. If approved, Sumitomo is eligible to receive a tiered, low double-digit royalty on our net sales of JZP441. In November 2023, we announced that we achieved initial proof-of-concept in our Phase 1 clinical trial program in healthy volunteers as demonstrated by the MWT. At that time, we also noted the program was being paused as we analyzed safety findings related to visual disturbances and cardiovascular effects; no liver toxicity signals were observed. Following additional review of the trial findings and input from FDA, we initiated a small Phase 1b trial of JZP441 in narcolepsy Type 1 patients in 2025. We expect data from this trial will further our understanding of JZP441 and orexin-2 receptor agonism, providing learnings that could inform future development efforts.

Below is a summary of our key ongoing and planned development projects related to our products and pipeline and their corresponding current stages of development:

Product Candidates			Description
ONCOLOGY
Regulatory
Zepzelca			First-line maintenance for extensive-stage SCLC in combination with atezolizumab (sNDA under FDA review)
Dordaviprone			Recurrent H3 K27M-mutant diffuse glioma (NDA under FDA review)
Phase 3
Zanidatamab			First-line HER2-positive GEA (ongoing trial)
Zanidatamab			First-line HER2-positive BTC (ongoing trial)
Zanidatamab			Previously treated HER2-positive breast cancer in patients whose disease has progressed on previous T-DXd treatment (EmpowHER-BC-303) (ongoing trial)
Dordaviprone			First-line H3 K27M-mutant diffuse glioma (ongoing trial)
Vyxeos			AML or high-risk MDS (AML18) (cooperative group studies) (ongoing trial) Newly diagnosed adults with standard- and high-risk AML (AML Study Group cooperative group study) (ongoing trial) Newly diagnosed pediatric patients with AML (COG cooperative group study) (ongoing trial)
Phase 2
Zanidatamab			HER2-expressing GEA, BTC or colorectal cancer in combination with standard first-line chemotherapy (ongoing trial)
Zanidatamab			Basket trial including HER2-positive solid tumors (DiscovHER-Pan-206) (ongoing trial)
Zanidatamab			Neoadjuvant and adjuvant breast cancer (EmpowHER-BC-208)
Vyxeos			High-risk MDS (European Myelodysplastic Syndromes) (cooperative group study) (ongoing trial) Newly diagnosed untreated patients with intermediate- and high-risk AML (cooperative group study) (ongoing trial)
Vyxeos + other approved therapies			R/R AML or hypomethylating agent failure MDS (MD Anderson collaboration study) (ongoing trial) De novo or R/R AML (MD Anderson collaboration study) (ongoing trial)

41

---

Table of Contents

Product Candidates			Description
Phase 2a
Zanidatamab			Previously treated HER2+ HR+ breast cancer in combination with palbociclib (ongoing trial)
Phase 1b/2
Zanidatamab			First-line breast cancer and GEA (BeiGene trial) (ongoing trial)
Zanidatamab			HER2-expressing breast cancer in combination with ALX148 (ongoing trial)
Phase 1
JZP815			Raf and Ras mutant tumors (acquired from Redx) (ongoing trial)
Zanidatamab			Previously treated metastatic HER2-expressing cancers in combination with select antineoplastic therapies (cooperative group study) (ongoing trial)
JZP898			Conditionally-activated IFNα INDUKINE™ molecule in solid tumors (ongoing trial)
Vyxeos			Low intensity dosing for higher risk MDS (MD Anderson collaboration study) (ongoing trial)
JZP3507*			Primary central nervous system tumors (acquired from Chimerix) (ongoing trial)
Preclinical
KRAS inhibitor targets			G12D selective and pan-KRAS molecules (acquired from Redx)
Undisclosed targets			Oncology
CombiPlex®			Hematology/oncology exploratory activities
NEUROSCIENCE
Phase 3
Epidyolex			LGS, TSC and DS (ongoing trial in Japan)
Phase 1
JZP324			Oxybate extended-release formulation (planned trial)
JZP441**			Potent, highly selective oral orexin-2 receptor agonist (ongoing trial)
Preclinical
Undisclosed targets			Sleep Epilepsy Other Neuroscience

*Also known as ONC206

**Also known as DSP-0187

Challenges, Risks and Trends Related to Our Business

Our operating plan assumes that Xywav, with 92% lower sodium compared to high-sodium oxybates (depending on the dose), a dosing titration option and an absence of a sodium warning, will remain the #1 branded oxybate treatment for narcolepsy; the position it held based on revenue in the second quarter of 2025. In June 2021, FDA recognized seven years of ODE for Xywav in narcolepsy through July 21, 2027 (which was subsequently extended to January 21, 2028), stating that Xywav is clinically superior to Xyrem by means of greater safety due to reduced chronic sodium burden. While we expect that our business will continue to meaningfully depend on oxybate revenues, there is no guarantee that oxybate revenues will remain at current levels.

Our ability to successfully commercialize Xywav depends on, among other things, our ability to maintain adequate payor coverage and reimbursement for Xywav and acceptance of Xywav by physicians and patients, including of Xywav for the treatment of IH in adults. In an effort to support strong adoption of Xywav and patient success, we are focused on facilitating payor coverage for Xywav and providing robust patient copay and savings programs.

Xywav and Xyrem face competition from Avadel’s Lumryz, a branded product for treatment of cataplexy and/or EDS in narcolepsy, which was launched in the U.S. market in June 2023. In addition, in January 2023, our oxybate products began to face competition from an AG version of high-sodium oxybate pursuant to a settlement agreement we entered into with an ANDA filer. In July 2023, a volume-limited ANDA filer launched an additional AG version of high-sodium oxybate. These AG products have negatively impacted and are expected to continue to negatively impact Xyrem and Xywav sales for patients

42

---

Table of Contents

with narcolepsy. Specifically, a wholly owned subsidiary of Hikma launched its AG version of sodium oxybate in January 2023 and Amneal launched its AG version of sodium oxybate in July 2023. Hikma has elected to continue to sell the Hikma AG product, with royalties to be paid to us, for a total of up to four years beginning in January 2024, which election may be terminated by Hikma in accordance with the notice provisions in the agreements between the parties. We have the right to receive a meaningful royalty from Hikma on net sales of the Hikma AG product; the royalty rate was fixed for the second half of 2023. There was a substantial increase in the royalty rate beginning in January 2024, which will remain fixed for the duration of the agreement's term. We are also paid for supply of the Hikma AG product and reimbursed by Hikma for a portion of the services costs associated with the operation of the Xywav and Xyrem REMS, and distribution of the Hikma AG product. We also granted Hikma a license to launch its own generic sodium oxybate product but, if it elects to launch its own generic product, Hikma will no longer have the right to sell the Hikma AG product. In addition, Hikma would need to set up its own REMS (or join an existing REMS operated by another company), which must be open to any other company seeking to commercialize a sodium oxybate product. In our settlements with Amneal, Lupin, and Par, we granted each party the right to sell a limited volume of an AG product in the U.S. beginning on July 1, 2023 and ending on December 31, 2025, with royalties to be paid to us. Amneal launched its AG version of high-sodium oxybate in July 2023. At this time, Amneal has rights to sell a low-single-digit percentage of historical Xyrem sales over each 6-month sales period. At this time, Lupin and Par have elected not to launch an AG product. AG products will be distributed through the same REMS as Xywav and Xyrem. We also granted each of Amneal, Lupin and Par a license to launch its own generic sodium oxybate product under its ANDA on or after December 31, 2025, or earlier under certain circumstances, including the circumstance where Hikma elects to launch its own generic product. If Amneal, Lupin or Par elects to launch its own generic product under such circumstance, it will no longer have the right to sell an AG product. In addition, any company commercializing a generic version of high-sodium oxybate would need to establish its own REMS, or join an existing REMS operated by another company.

In the future, we expect our oxybate products to continue to face competition from generic versions of high-sodium oxybate pursuant to settlement agreements we entered into with multiple ANDA filers. In addition, we received notices in June 2021 and February 2023 that Lupin and Teva, respectively, filed ANDAs for generic versions of Xywav. On October 13, 2023, Lupin announced that it has received tentative approval for its application to market a generic version of Xywav. Generic competition can decrease the net prices at which branded products, such as Xywav and Xyrem are sold, as can competition from other branded products. In addition, we have increasingly experienced pressure from third party payors to agree to discounts, rebates or restrictive pricing terms, and we cannot guarantee we will be able to agree to commercially reasonable terms with PBMs, or similar organizations and other third party payors, or that we will be able to ensure patient access and acceptance on formularies. Entering into agreements with PBMs or similar organizations and payors to ensure patient access has and may continue to result in decreased net prices for some of our products. Moreover, generic or AG high-sodium oxybate products or branded high-sodium oxybate entrants in narcolepsy, such as Avadel’s Lumryz, have had and may continue to have the effect of changing payor or formulary coverage of Xywav or Xyrem in favor of other products, and indirectly adversely affect sales of Xywav and Xyrem.

In any event, we expect that the approval and launch of AG products or other generic versions of Xyrem or Xywav and the approval and launch of any other sodium oxybate product, such as Avadel’s Lumryz, or alternative product that treats narcolepsy will continue to have a negative impact on, and could have a material adverse effect on, our sales of Xywav and Xyrem and on our business, financial condition, results of operations and growth prospects.

Our financial condition, results of operations and growth prospects are also dependent on our ability to maintain or increase sales of Epidiolex/Epidyolex in the U.S. and Europe, which is subject to many risks and there is no guarantee that we will be able to continue to successfully commercialize Epidiolex/Epidyolex for its approved indications. The commercial success of Epidiolex/Epidyolex depends on the extent to which patients and physicians accept and adopt Epidiolex/Epidyolex as a treatment for seizures associated with LGS, DS and TSC, and we do not know whether our or others’ estimates in this regard will be accurate. Physicians may not prescribe Epidiolex and patients may be unwilling to use Epidiolex/Epidyolex if coverage is not provided or reimbursement is inadequate to cover a significant portion of the cost. Additionally, any negative development for Epidiolex/Epidyolex in the market, in clinical development for additional indications, or in regulatory processes in other jurisdictions, may adversely impact the commercial results and potential of Epidiolex/Epidyolex. Moreover, we expect that Epidiolex will face competition from generic products in the future. We have settled patent litigation with each of the ten companies seeking to market a generic version of Epidiolex in the U.S. by granting each of the Epidiolex ANDA Filers a license to manufacture, market, and sell its own generic version of Epidiolex beginning in the very late 2030s, or earlier under certain circumstances, including but not limited to the launch of another generic Epidiolex product or a final decision that all unexpired claims of the Epidiolex patents are not infringed, or are invalid and/or unenforceable. In addition, there are non-FDA approved cannabidiol preparations being made available from companies through the state-enabled medical marijuana industry, which might attempt to compete with Epidiolex. Thus, significant uncertainty remains regarding the commercial potential of Epidiolex/Epidyolex.

In addition to our neuroscience products and product candidates, we are commercializing a portfolio of oncology products, including Rylaze, Zepzelca, Ziihera, Defitelio and Vyxeos. An inability to effectively commercialize Rylaze,

43

---

Table of Contents

Zepzelca, Ziihera, Defitelio and Vyxeos and to maximize their potential where possible through successful research and development activities could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

A key aspect of our growth strategy is our continued investment in our evolving and expanding R&D activities. If we are not successful in the clinical development of our product candidates, if we are unable to obtain regulatory approval for our product candidates in a timely manner, or at all, or if sales of an approved product do not reach the levels we expect, our anticipated revenue from our product candidates would be negatively affected, which could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

In addition to continued investment in our R&D pipeline, we intend to continue to grow our business by acquiring or in-licensing, and developing, including with collaboration partners, additional products and product candidates that we believe are highly differentiated and have significant commercial potential. Failure to identify and acquire, in-license or develop additional products or product candidates, successfully manage the risks associated with integrating any products or product candidates into our portfolio or the risks arising from anticipated and unanticipated problems in connection with an acquisition or in-licensing, such as the GW Acquisition and our recent acquisition of Chimerix, could have a material adverse effect on our business, results of operations and financial condition.

Our industry has been, and is expected to continue to be, subject to healthcare cost containment and drug pricing scrutiny by regulatory agencies in the U.S. and internationally. If new healthcare policies or reforms intended to curb healthcare costs are adopted or if we experience negative publicity with respect to pricing of our products or the pricing of pharmaceutical drugs generally, the prices that we charge for our products may be affected, our commercial opportunity may be limited and/or our revenues from sales of our products may be negatively impacted. For example, the Inflation Reduction Act of 2022 among other things, requires the U.S. Department of Health and Human Services Secretary to negotiate, with respect to Medicare units and subject to a specified cap, the price of a set number of certain high Medicare spend drugs and biologicals per year starting in 2026, penalizes manufacturers of certain Medicare Parts B and D drugs for price increases above inflation, and makes several changes to the Medicare Part D benefit, including a limit on annual out-of-pocket costs and a change in manufacturer liability under the program, that could negatively affect our business and financial condition. In addition, under the Medicaid Drug Rebate Program, rebates owed by manufacturers are no longer subject to a cap on the rebate amount, which could adversely affect our rebate liability. Moreover, in May 2025, the White House issued an Executive Order directing federal agencies to pursue “most favored nation” pricing for certain prescription drugs, under which U.S. prices would be indexed to the lowest prices available in select OECD countries. The White House is currently seeking voluntary pricing concessions from manufacturers, with the potential for administrative action to follow if companies do not engage constructively, creating uncertainty around future pricing and reimbursement that could negatively impact our U.S. revenues and overall business performance. We are also subject to increasing pricing pressure and restrictions on reimbursement imposed by payors. If we fail to obtain and maintain adequate formulary positions and institutional access for our current products and future approved products, we will not be able to achieve a return on our investment and our business, financial condition, results of operations and growth prospects would be materially adversely affected.

While certain preparations of cannabis remain Schedule I controlled substances, if such products are approved by FDA for medical use in the U.S. they are rescheduled to Schedules II-V, since approval by FDA satisfies the “accepted medical use” requirement; or such products may be removed from control under the Controlled Substances Act entirely. If any of our product candidates receive FDA approval, the Department of Health and Human Services and the U.S. Drug Enforcement Administration will make a scheduling determination. U.S. or foreign regulatory agencies may request additional information regarding the abuse potential of our products which may require us to generate more clinical or other data than we currently anticipate to establish whether or to what extent the substance has an abuse potential, which could increase the cost, delay the approval and/or delay the launch of that product.

In addition, business practices by pharmaceutical companies, including product formulation improvements, patent litigation settlements, and REMS programs, have increasingly drawn public scrutiny from legislators and regulatory agencies, with allegations that such programs are used as a means of improperly blocking or delaying competition. Government investigations with respect to our business practices, including as they relate to the Xywav and Xyrem REMS, the launch of Xywav, our Xyrem patent litigation settlement agreements or otherwise, could cause us to incur significant monetary charges to resolve these matters and could distract us from the operation of our business and execution of our strategy. In addition, from June 2020 to May 2022, a number of lawsuits were filed on behalf of purported direct and indirect Xyrem purchasers, alleging that the patent litigation settlement agreements we entered with certain generic companies violate state and federal antitrust and consumer protection laws. For additional information on these lawsuits, as well as a class settlement agreement with respect thereto and other legal matters, see Note 10, Commitments and Contingencies-Legal Proceedings of the Notes to Consolidated Financial Statements, included in Part I, Item 1 of this Quarterly Report on Form 10‑Q. It is possible that additional lawsuits will be filed against us making similar or related allegations. We cannot predict the outcome of these or potential additional lawsuits; however, if the plaintiffs were to be successful in their claims against us, they may be entitled to injunctive relief or

44

---

Table of Contents

we may be required to pay significant monetary damages. Moreover, we are, and expect to continue to be, the subject of various claims, legal proceedings, and government investigations apart from those set forth above that have arisen in the ordinary course of business that have not yet been fully resolved and that could adversely affect our business and the execution of our strategy. Any of the foregoing risks and uncertainties could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

Finally, the U.S. government has imposed and may seek to impose additional restrictions on international trade, such as tariffs on goods generally, and pharmaceutical and biological products in particular, imported into the U.S. In anticipation of the potential for increased tariffs on our products, we have increased inventory levels of our products in the U.S. We conduct our business globally and have third-party suppliers located outside the U.S., including in China. In addition, we have a manufacturing and development facility in Athlone, Ireland where we manufacture Xywav and Xyrem, a manufacturing and development facility in Kent Science Park, U.K. where we produce Epidiolex/Epidyolex, and a manufacturing plant in Villa Guardia, Italy where we produce defibrotide drug substance. While we cannot at this time predict the ultimate impact of such tariffs, we anticipate that our margins could be adversely affected beginning as early as fiscal 2026, depending on the ultimate scope and duration of tariffs imposed. However, given the volatility and uncertainty regarding the scope and duration of such tariffs and other aspects of U.S. and foreign government trade policies, the ultimate impact on our operations and financial results remains uncertain and could be significant. See “Global trade issues and changes in and uncertainties with respect to trade policies and export regulations, including import and export license requirements, trade sanctions, tariffs and international trade disputes, could increase our costs, reduce the competitiveness of our products and otherwise have a material adverse effect on our business, financial condition, results of operations and growth prospects” in Part II, Item 1A of this Quarterly Report on Form 10-Q.

The foregoing risks and uncertainties are discussed in greater detail, along with other risks and uncertainties, in “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, as supplemented by the risks and uncertainties described in "Risk Factors" in Part II, Item 1A of this Quarterly Report on Form 10-Q.

Results of Operations

The following table presents our revenues and expenses (in thousands, except percentages): 

			Three Months Ended June 30,												Increase/						Six Months Ended June 30,												Increase/
			2025						2024						(Decrease)						2025						2024						(Decrease)
Product sales, net			$	985,571					$	964,144					2		%				$	1,824,989					$	1,806,246					1		%
Royalties and contract revenues			60,141						59,681						1		%				118,564						119,562						(1)		%
Cost of product sales (excluding amortization of acquired developed technologies)			116,268						109,902						6		%				220,888						205,389						8		%
Selling, general and administrative			358,399						338,523						6		%				872,412						690,235						26		%
Research and development			189,972						220,734						(14)		%				370,624						443,581						(16)		%
Intangible asset amortization			162,103						155,223						4		%				316,551						310,953						2		%
Acquired in-process research and development			905,362						—						—						905,362						10,000						N/A(1)
Interest expense, net			47,363						62,023						(24)		%				101,069						128,139						(21)		%
Foreign exchange (gain) loss			1,799						(507)						N/A(1)						2,012						1,186						70		%
Income tax benefit			(17,170)						(30,653)						(44)		%				(34,982)						(18,984)						84		%
Equity in loss of investees			86						12						N/A(1)						628						1,359						(54)		%

____________________________

(1)Comparison to prior period not meaningful.

45

---

Table of Contents

Revenues

The following table presents our net product sales, royalties and contract revenues, and total revenues (in thousands, except percentages):

			Three Months Ended June 30,												Increase/						Six Months Ended June 30,												Increase/
			2025						2024						(Decrease)						2025						2024						(Decrease)
Xywav			$	415,321					$	368,472					13		%				$	760,125					$	683,772					11		%
Xyrem			35,349						62,180						(43)		%				72,590						126,412						(43)		%
Epidiolex/Epidyolex			251,730						247,102						2		%				469,467						445,818						5		%
Sativex			4,615						6,383						(28)		%				10,022						9,118						10		%
Total Neuroscience			707,015						684,137						3		%				1,312,204						1,265,120						4		%
Rylaze/Enrylaze			100,659						107,829						(7)		%				194,892						210,579						(7)		%
Zepzelca			74,541						81,047						(8)		%				137,574						156,147						(12)		%
Defitelio/defibrotide			48,106						45,421						6		%				88,768						93,097						(5)		%
Vyxeos			44,851						43,012						4		%				74,395						75,035						(1)		%
Ziihera			5,991						—						N/A(1)						7,966						—						N/A(1)
Total Oncology			274,148						277,309						(1)		%				503,595						534,858						(6)		%
Other			4,408						2,698						63		%				9,190						6,268						47		%
Product sales, net			985,571						964,144						2		%				1,824,989						1,806,246						1		%
High-sodium oxybate AG royalty revenue			54,138						54,164						—		%				103,084						104,111						(1)		%
Other royalty and contract revenues			6,003						5,517						9		%				15,480						15,451						—		%
Total revenues			$	1,045,712					$	1,023,825					2		%				$	1,943,553					$	1,925,808					1		%

___________________________

(1)Comparison to prior period not meaningful.

Total Revenues

Xywav product sales increased in the three and six months ended June 30, 2025, compared to the same periods in 2024, primarily due to increased sales volumes of 14% in both periods and, to a lesser extent, a higher selling price, partially offset by higher gross to net deductions. We continue to see Xywav adoption in patients with narcolepsy driven by educational initiatives around efficacy and the benefit of lowering sodium intake. In addition, Xywav product sales were positively impacted by adoption in IH; Xywav is the only oxybate therapy approved to treat IH and we see continued growth of new prescribers. Exiting the quarter, there were 10,600 patients taking Xywav for narcolepsy and 4,625 taking Xywav for IH, an increase of approximately 7% and 40%, respectively, compared to the same period in 2024. Xyrem product sales decreased in the three and six months ended June 30, 2025, compared to the same periods in 2024, primarily due to decreased sales volumes of 35% and 38% in the respective periods, due to high-sodium oxybate competition and adoption of Xywav by existing patients, and higher gross to net deductions, partially offset by a higher selling price. Epidiolex/Epidyolex product sales increased in the three and six months ended June 30, 2025, compared to the same periods in 2024, primarily due to increased sales volumes of 7% and 6% in the respective periods, due to increased demand, and a higher average selling price, partially offset by higher gross to net deductions. In the three months ended June 30, 2025, year-on-year growth was negatively affected by increases in U.S. inventory levels in the channel in the same period in 2024 and in the six months ended June 30, 2025, year-on-year growth was negatively affected by greater reductions in U.S. inventory levels in the channel in the current year’s period.

Rylaze/Enrylaze product sales decreased in the three and six months ended June 30, 2025, compared to the same periods in 2024, primarily due to decreased sales volumes of 3% and 4% in the respective periods and higher gross to net deductions, partially offset by a higher average selling price. Following updates to pediatric treatment protocols for ALL which have been broadly adopted, pediatric asparaginase use as a class remains below levels seen prior to protocol implementation in the second half of 2024. Rylaze use within the asparaginase class remains broadly stable. Zepzelca product sales decreased in the three and six months ended June 30, 2025, compared to the same periods in 2024, primarily due to decreased sales volumes, driven by increased competition in second-line SCLC and treatment protocol updates delaying progression of first-line limited-stage SCLC patients to the second-line setting, offset by lower gross to net deductions and a higher selling price. Defitelio/defibrotide product sales increased in the three months ended June 30, 2025, compared to the same period in 2024, primarily due to increased sales volumes. Defitelio/defibrotide product sales decreased in the six months ended June 30, 2025, compared to the same period in 2024, primarily due to decreased sales volumes. Vyxeos product sales increased in the three months ended June 30, 2025, compared to the same period in 2024, primarily due to an increase in sales volumes, partially offset by a

46

---

Table of Contents

lower average selling price due to regional mix. Vyxeos product sales decreased in the six months ended June 30, 2025, compared to the same period in 2024, primarily due to a lower average selling price due to regional mix, partially offset by an increase in sales volumes.

Royalties and contract revenues in the three and six months ended June 30, 2025 were in line with the same periods in 2024. We expect royalties and contract revenues to remain broadly in line with 2024.

We expect total revenues will increase in 2025 over 2024, primarily driven by growth across our commercial portfolio, offset by a decrease in sales of Xyrem due to the impact of high-sodium oxybate competition.

Cost of Product Sales

Cost of product sales increased in the three and six months ended June 30, 2025, compared to the same periods in 2024, primarily due to changes in product mix and higher fair value step-up expense of $3.9 million and $4.8 million in the respective periods. Gross margin as a percentage of net product sales was 88.2% and 87.9% for the three and six months ended June 30, 2025, compared to 88.6% for the same periods in 2024. We expect our cost of product sales to increase in 2025 compared to 2024, primarily driven by changes in product mix.

Selling, General and Administrative Expenses

Selling, general and administrative expenses increased in the three months ended June 30, 2025, compared to the same period in 2024, primarily due to an increase in compensation-related expenses of $21.7 million primarily driven by higher headcount in support of our commercial portfolio. Selling, general and administrative expenses increased in the six months ended June 30, 2025, compared to the same period in 2024, primarily due to certain Xyrem antitrust litigation settlements of $172.0 million.

We expect selling, general and administrative expenses in 2025 to increase compared to 2024, primarily due to Xyrem litigation settlement expenses, the inclusion of costs relating to Chimerix, investment in our commercial portfolio, including the launch of Ziihera, along with increased compensation-related expenses.

Research and Development Expenses

Research and development expenses consist primarily of costs related to clinical studies and outside services, personnel expenses and other research and development costs. Clinical study and outside services costs relate primarily to services performed by clinical research organizations, materials and supplies, and other third party fees. Personnel expenses relate primarily to salaries, benefits and share-based compensation. Other research and development expenses primarily include overhead allocations consisting of various support and facilities-related costs. We do not track fully-burdened research and development expenses on a project-by-project basis. We manage our research and development expenses by identifying the research and development activities that we anticipate will be performed during a given period and then prioritizing efforts based on our assessment of which development activities are important to our business and have a reasonable probability of success, and by dynamically allocating resources accordingly. We also continually review our development pipeline projects and the status of their development and, as necessary, reallocate resources among our development pipeline projects that we believe will best support the future growth of our business.

The following table provides a breakout of our research and development expenses by major categories of expense (in thousands):

			Three Months Ended June 30,												Six Months Ended June 30,
			2025						2024						2025						2024
Clinical studies and outside services			$	93,099					$	134,118					$	180,442					$	265,584
Personnel expenses			75,439						68,305						149,798						141,301
Other			21,434						18,311						40,384						36,696
Total			$	189,972					$	220,734					$	370,624					$	443,581

Research and development expenses decreased by $30.8 million and $73.0 million in the three and six months ended June 30, 2025, compared to the same periods in 2024, driven by a reduction in clinical studies and outside services costs, primarily due to lower costs related to zanidatamab as a result of timing of clinical trial activities and JZP385 (essential tremor) following discontinuation of this program, partially offset by the addition of costs relating to dordaviprone following the Chimerix Acquisition.

47

---

Table of Contents

For 2025, we expect that our research and development expenses will decrease compared to 2024, primarily driven by a reduction in clinical studies and outside services costs relating to zanidatamab, JZP385 and continued portfolio prioritization, partially offset by the inclusion of costs associated with the development of dordaviprone.

Intangible Asset Amortization

Intangible asset amortization in the three and six months ended June 30, 2025 was broadly in line with the same periods in 2024.

Acquired In-Process Research and Development

Acquired IPR&D expense in the three and six months ended June 30, 2025 represents the value allocated to dordaviprone in the Chimerix Acquisition.

Interest Expense, Net

Interest expense, net decreased by $14.7 million and $27.1 million in the three and six months ended June 30, 2025, respectively, compared to the same periods in 2024, primarily due to lower interest expense on the Tranche B-2 Dollar Term Loans, partially offset by the inclusion of interest expense on the 2030 Notes.

Income Tax Benefit

Our income tax benefit was $17.2 million and $35.0 million for the three and six months ended June 30, 2025, respectively, compared to an income tax benefit of $30.7 million and $19.0 million for the same periods in 2024, relating to tax arising on income or losses in Ireland, the U.K., the U.S. and certain other foreign jurisdictions and Pillar Two top-up taxes, offset by deductions on subsidiary equity, patent box and foreign derived intangible income benefits and tax credits. The income tax benefit in the six months ended June 30, 2025 was primarily due to the tax impact of certain Xyrem antitrust litigation settlements.

Liquidity and Capital Resources

As of June 30, 2025, we had cash, cash equivalents and investments of $1.7 billion, borrowing available under our Amended Revolving Credit Facility of $885.0 million and a long-term debt principal balance of $5.4 billion. Our long-term debt included $1.9 billion aggregate principal amount of the Tranche B-2 Dollar Term Loans, $1.5 billion in aggregate principal amount of the Secured Notes, $1.0 billion aggregate principal amount of the 2026 Notes, and $1.0 billion aggregate principal amount of the 2030 Notes. We generated cash flows from operations of $518.6 million during the six months ended June 30, 2025, and we expect to continue to generate positive cash flows from operations which will enable us to operate our business and de-lever our balance sheet over time.

Since the closing of the acquisition of GW in May 2021, we have fully repaid our Euro Term Loan. With respect to our Tranche B-2 Dollar Term Loans, we have made voluntary repayments of $1.1 billion, $300.0 million in September 2022 and $750.0 million in January 2025, along with mandatory repayments $124.0 million. In August 2024, we repaid the $575.0 million aggregate principal amount of our 2024 Notes.

We have a significant amount of debt outstanding on a consolidated basis. For further information, including details relating to our scheduled maturities with respect to our long-term debt, see Note 9, Debt, of the Notes to Condensed Consolidated Financial Statements, included in Part I, Item 1 of this Quarterly Report on Form 10‑Q. This substantial level of debt could have important consequences to our business, including, but not limited to the factors set forth in “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2024, under the heading “We have incurred substantial debt, which could impair our flexibility and access to capital and adversely affect our financial position, and our business would be adversely affected if we are unable to service our debt obligations.”

We believe that our existing cash, cash equivalents and investments balances, cash we expect to generate from operations and funds available under our Revolving Credit Facility will be sufficient to fund our operations and to meet our existing obligations for the foreseeable future. The adequacy of our cash resources depends on many assumptions, including primarily our assumptions with respect to product sales and expenses, as well as the other factors set forth in "Risk Factors" under the heading "Risks Related to our Lead Products and Product Candidates” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, as supplemented by the risks described in “Risk Factors" under the heading “Delays or problems in the supply of our products for sale or for use in clinical trials, loss of our single source suppliers or failure to comply with manufacturing regulations could materially and adversely affect our business, financial condition, results of operations and growth prospects” in Part II, Item 1A of this Quarterly Report on Form 10-Q, as well as those factors set forth in

---

Table of Contents

“Risk Factors" under the heading and “To continue to grow our business, we will need to commit substantial resources, which could result in future losses or otherwise limit our opportunities or affect our ability to operate and grow our business” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024.

Our assumptions may prove to be wrong or other factors may adversely affect our business, and as a result we could exhaust or significantly decrease our available cash resources, and we may not be able to generate sufficient cash to service our debt obligations which could, among other things, force us to raise additional funds and/or force us to reduce our expenses, either of which could have a material adverse effect on our business.

To continue to grow our business over the longer term, we plan to commit substantial resources to product acquisition and in-licensing, product development, clinical trials of product candidates and expansion of our commercial, development, manufacturing and other operations. In this regard, we have evaluated and expect to continue to evaluate a wide array of strategic transactions as part of our strategy to acquire or in-license and develop additional products and product candidates. Acquisition opportunities that we pursue could materially affect our liquidity and capital resources and may require us to incur additional indebtedness, seek equity capital or both. We regularly evaluate the performance of our products and product candidates to ensure fit within our portfolio and support efficient allocation of capital. In addition, we may pursue new operations or continue the expansion of our existing operations. Accordingly, we expect to continue to opportunistically seek access to additional capital to license or acquire additional products, product candidates or companies to expand our operations or for general corporate purposes. Raising additional capital could be accomplished through one or more public or private debt or equity financings, collaborations or partnering arrangements. However, our ability to raise additional capital may be adversely impacted by worsening global economic conditions and the recent disruptions to, and volatility in, the credit and financial markets in the U.S. and worldwide resulting from the effects of inflationary pressures, potential future bank failures, or otherwise. Accordingly, we could experience an inability to access additional capital or our liquidity could otherwise be impacted, which could in the future negatively affect our capacity for certain corporate development transactions or our ability to make other important, opportunistic investments. In addition, under Irish law we must have authority from our shareholders to issue any ordinary shares, including ordinary shares that are part of our authorized but unissued share capital, and we currently have such authorization. Moreover, as a matter of Irish law, when an Irish public limited company issues ordinary shares to new shareholders for cash, the company must first offer those shares on the same or more favorable terms to existing shareholders on a pro rata basis, unless this statutory pre-emption obligation is dis-applied, or opted-out of, by approval of its shareholders. At our annual general meeting of shareholders in July 2025, our shareholders voted to approve our proposal to dis-apply the statutory pre-emption obligation. This current pre-emption opt-out authority is due to expire in January 2027. If we are unable to obtain further pre-emption authorities from our shareholders in the future, or otherwise continue to be limited by the terms of new pre-emption authorities approved by our shareholders in the future, our ability to use our unissued share capital to fund in-licensing, acquisition or other business opportunities, or to otherwise raise capital, including at the time we are required to make repurchases of the 2026 Notes, the 2030 Notes and/or the Secured Notes, are required to repay outstanding amounts under the Amended Credit Agreement, or pay cash upon exchange of the 2026 Notes or the 2030 Notes, could likewise be adversely affected. In any event, an inability to borrow or raise additional capital in a timely manner and on attractive terms could prevent us from expanding our business or taking advantage of acquisition opportunities and could otherwise have a material adverse effect on our business and growth prospects. In addition, if we use a substantial amount of our funds to acquire or in-license products or product candidates, we may not have sufficient additional funds to conduct all of our operations in the manner we would otherwise choose. Furthermore, any equity financing would be dilutive to our shareholders, and could require the consent of the lenders under the Amended Credit Agreement that provides for (i) the Tranche B-2 Dollar Term Loans and Amended Revolving Credit Facility, and the indenture for the Secured Notes for certain financings.

In July 2024, our board of directors authorized the New Repurchase Program, to repurchase ordinary shares having an aggregate purchase price of $500.0 million, exclusive of any brokerage commissions. Under the New Repurchase Program, which has no expiration date, we may repurchase ordinary shares from time to time by any methods and/or structures permitted by applicable law. The timing and amount of repurchases will depend on a variety of factors, including the price of our ordinary shares, alternative investment opportunities, restrictions under the Amended Credit Agreement and the indenture for our Secured Notes, corporate and regulatory requirements and market conditions. The New Repurchase Program may be modified, suspended or discontinued at any time without our prior notice. The New Repurchase Program replaces and supersedes the Old Repurchase Program, a share repurchase program to repurchase ordinary shares having an aggregate purchase price of $1.5 billion, exclusive of any brokerage commissions. During the three and six months ended June 30, 2025, we spent a total of $125.0 million to repurchase 1.1 million of our ordinary shares, all under the New Repurchase Program, at a purchase price, including commissions, of $109.52 per share. During the three and six months ended June 30, 2024, we spent a total of $161.4 million to repurchase 1.5 million of our ordinary shares, all under the Old Repurchase Program, at a purchase price, including commissions, of $110.75 per share. As of June 30, 2025, the remaining amount authorized for repurchases under the New Repurchase Program was $225.0 million, exclusive of any brokerage commissions.

49

---

Table of Contents

The following table presents a summary of our cash flows for the periods indicated (in thousands):

			Six Months Ended June 30,
			2025						2024
Net cash provided by operating activities			$	518,639					$	598,581
Net cash used in investing activities			(809,951)						(528,995)
Net cash used in financing activities			(937,991)						(217,637)
Effect of exchange rates on cash and cash equivalents			6,319						(2,457)
Net decrease in cash and cash equivalents			$	(1,222,984)					$	(150,508)

Operating activities

Net cash provided by operating activities decreased by $79.9 million in the six months ended June 30, 2025, compared to the same period in 2024, primarily due to the payment of Xyrem antitrust litigation settlements of $172.0 million in the six months ended June 30, 2025, partially offset by the payment of accrued facility expenses of $52.2 million in the six months ended June 30, 2024.

Investing activities

Net cash used in investing activities increased by $281.0 million in the six months ended June 30, 2025, compared to the same period in 2024, primarily due to the following:

•$858.1 million outflow related to the net cash paid for the Chimerix Acquisition; and

•$25.0 million milestone payment to Zymeworks following FDA approval of Ziihera in BTC; partially offset by

•$605.0 million net increase in the proceeds from maturity of investments, driven by time deposits.

Financing activities

Net cash used in financing activities increased by $720.4 million in the six months ended June 30, 2025, compared to the same period in 2024, primarily due to:

•The $750.0 million voluntary repayment on the Tranche B-2 Dollar Term Loan in January 2025; and

•An increase of $17.3 million in payment of employee withholding taxes related to share-based awards; partially offset by

•A decrease of $36.4 million in share repurchases.

Debt

The summary of our outstanding indebtedness and scheduled maturities with respect to our long-term debt principal balances is included in Note 9, Debt, of the Notes to Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10-Q. In January 2025, we made a voluntary repayment on the Tranche B-2 Dollar Term Loans totaling $750.0 million.

During the six months ended June 30, 2025, there were no other changes to our financing arrangements, as set forth in Note 11, Debt, of the Notes to Consolidated Financial Statements included in our Annual Report on Form 10-K for the year ended December 31, 2024.

Contractual Obligations

During the six months ended June 30, 2025, there were no material changes to our contractual obligations as set forth in Part II, Item 7 “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the year ended December 31, 2024 other than the assumption of potential future milestone payments, totaling $340.0 million, and royalty obligations in the Chimerix Acquisition.

Critical Accounting Estimates

To understand our financial statements, it is important to understand our critical accounting estimates. The preparation of our financial statements in conformity with U.S. generally accepted accounting principles requires us to make estimates and

50

---

Table of Contents

assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates and assumptions are required in determining the amounts to be deducted from gross revenues and also with respect to the acquisition and valuation of intangibles and income taxes. Some of these judgments can be subjective and complex, and, consequently, actual results may differ from these estimates. For any given individual estimate or assumption we make, there may also be other estimates or assumptions that are reasonable. Although we believe our estimates and assumptions are reasonable, they are based upon information available at the time the estimates and assumptions were made.

Our critical accounting policies and significant estimates are detailed in our Annual Report on Form 10‑K for the year ended December 31, 2024. Our critical accounting policies and significant estimates have not changed substantially from those previously disclosed in our Annual Report on Form 10‑K for the year ended December 31, 2024.

Cautionary Note Regarding Forward-Looking Statements

This Quarterly Report on Form 10‑Q contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are subject to the “safe harbor” created by those sections. Forward-looking statements are based on our management’s current plans, objectives, estimates, expectations and intentions and on information currently available to our management. In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “would,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “project,” “predict,” “propose,” “intend,” “continue,” “potential,” “possible,” “foreseeable,” “likely,” “unforeseen” and similar expressions intended to identify forward-looking statements. These statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance, time frames or achievements to be materially different from any future results, performance, time frames or achievements expressed or implied by the forward-looking statements. These known and unknown risks, uncertainties and other factors include, without limitation:

•Our inability to maintain revenues from our oxybate franchise would have a material adverse effect on our business, financial condition, results of operations and growth prospects.

•The introduction of new products in the U.S. market that compete with, or otherwise disrupt the market for, our oxybate products has adversely affected and may continue to adversely affect sales of our oxybate products.

•The distribution and sale of our oxybate products are subject to significant regulatory restrictions, including the requirements of a REMS and safety reporting requirements, and these regulatory and safety requirements subject us to risks and uncertainties, any of which could negatively impact sales of Xywav and Xyrem.

•Our inability to maintain or increase sales of Epidiolex/Epidyolex would have a material adverse effect on our business, financial condition, results of operations and growth prospects.

•While we expect Xywav and Epidiolex/Epidyolex to remain our largest products, our success also depends on our ability to effectively commercialize our other existing products and potential future products.

•We face substantial competition from other companies, including companies with larger sales organizations and more experience working with large and diverse product portfolios, and competition from generic drugs.

•Adequate coverage and reimbursement from third party payors may not be available for our products and we may be unable to successfully contract for coverage from PBMs and other organizations; conversely, to secure coverage from these organizations, we may be required to pay rebates or other discounts or other restrictions to reimbursement, either of which could diminish our sales or adversely affect our ability to sell our products profitably.

•The pricing of pharmaceutical products has come under increasing scrutiny as part of a global trend toward healthcare cost containment and resulting changes in healthcare law and policy, including changes to Medicare, may impact our business in ways that we cannot currently predict, which could have a material adverse effect on our business and financial condition.

•In addition to access, coverage and reimbursement, the commercial success of our products depends upon their market acceptance by physicians, patients, third party payors and the medical community.

•Delays or problems in the supply of our products for sale or for use in clinical trials, loss of our single source suppliers or failure to comply with manufacturing regulations could materially and adversely affect our business, financial condition, results of operations and growth prospects.

•Global trade issues and changes in and uncertainties with respect to trade policies and export regulations, including import and export license requirements, trade sanctions, tariffs and international trade disputes, could increase our

51

---

Table of Contents

costs, reduce the competitiveness of our products and otherwise have a material adverse effect on our business, financial condition, results of operations and growth prospects.

•We may not realize the anticipated benefits from our acquisition of Chimerix.

•Our future success depends on our ability to successfully obtain and maintain regulatory approvals for our late-stage product candidates and, if approved, to successfully launch and commercialize those product candidates.

•We may not be able to successfully identify and acquire or in-license additional products or product candidates to grow our business, and, even if we are able to do so, we may otherwise fail to realize the anticipated benefits of these transactions.

•Conducting clinical trials is costly and time-consuming, and the outcomes are uncertain. A failure to prove that our product candidates are safe and effective in clinical trials, or to generate data in clinical trials to support expansion of the therapeutic uses for our existing products, could materially and adversely affect our business, financial condition, results of operations and growth prospects.

•It is difficult and costly to protect our proprietary rights, and we may not be able to ensure their protection.

•We have incurred, and may in the future incur, substantial costs as a result of litigation or other proceedings relating to patents, other intellectual property rights and related matters, and we may be unable to protect our rights to, or commercialize, our products.

•Significant disruptions of information technology systems or data security incidents could adversely affect our business.

•We are subject to significant ongoing regulatory obligations and oversight, which may subject us to civil or criminal proceedings, investigations, or penalties and may result in significant additional expense and limit our ability to commercialize our products.

•If we fail to comply with our reporting and payment obligations under the Medicaid Drug Rebate program or other governmental pricing programs, we could be subject to additional reimbursement requirements, penalties, sanctions and fines, which could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

•We have incurred substantial debt, which could impair our flexibility and access to capital and adversely affect our financial position, and our business would be adversely affected if we are unable to service our debt obligations.

•To continue to grow our business, we will need to commit substantial resources, which could result in future losses or otherwise limit our opportunities or affect our ability to operate and grow our business.

•If we fail to attract, retain and motivate members of our executive management team and key personnel, our operations and our future growth may be adversely affected.

Additional discussion of the risks, uncertainties and other factors described above, as well as other risks material to our business, can be found under “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, as supplemented by the risks and uncertainties described in "Risk Factors" Part II, Item 1A. in this Quarterly Report on Form 10-Q.

Given these risks, uncertainties and other factors, you should not place undue reliance on these forward-looking statements. Also, these forward-looking statements represent our plans, objectives, estimates, expectations and intentions only as of the date of this filing. You should read this Quarterly Report on Form 10‑Q completely and with the understanding that our actual future results and the timing of events may be materially different from what we expect. We hereby qualify our forward-looking statements by our cautionary statements. Except as required by law, we undertake no obligation to update or supplement any forward-looking statements publicly, or to update or supplement the reasons that actual results could differ materially from those anticipated in these forward-looking statements, even if new information becomes available in the future.

Item 3.Quantitative and Qualitative Disclosures About Market Risk

During the six months ended June 30, 2025, there were no material changes to our market risk disclosures as set forth in Part II, Item 7A “Quantitative and Qualitative Disclosures About Market Risk” in our Annual Report on Form 10-K for the year ended December 31, 2024.

52

---

Table of Contents

Item 4.Controls and Procedures

Evaluation of Disclosure Controls and Procedures. We have carried out an evaluation under the supervision and with the participation of management, including our principal executive officer and principal financial officer, of our disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) of the Exchange Act) as of the end of the period covered by this Quarterly Report on Form 10‑Q. Based on their evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective as of June 30, 2025.

Limitations on the Effectiveness of Controls.  A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues, if any, within an organization have been detected. Accordingly, our disclosure controls and procedures are designed to provide reasonable, not absolute, assurance that the objectives of our disclosure control system are met and, as set forth above, our principal executive officer and principal financial officer have concluded, based on their evaluation as of the end of the period covered by this report, that our disclosure controls and procedures were effective to provide reasonable assurance that the objectives of our disclosure control system were met.

Changes in Internal Control over Financial Reporting.  During the quarter ended June 30, 2025, there were no changes to our internal control over financial reporting that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

53

---

Table of Contents

PART II – OTHER INFORMATION

Item 1.Legal Proceedings

The information required to be set forth under this Item 1 is incorporated by reference to Note 10, Commitments and Contingencies—Legal Proceedings of the Notes to Condensed Consolidated Financial Statements included in Part I, Item 1 of this Quarterly Report on Form 10‑Q.

Item 1A.Risk Factors

Below we are providing, in supplemental form, changes to our risk factors from those previously disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024. Our risk factors disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, provide additional discussion regarding these supplemental risks and we encourage you to read and carefully consider all of the risk factors disclosed in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2024, together with the below, for a more complete understanding of the risks and uncertainties material to our business.

The pricing of pharmaceutical products has come under increasing scrutiny as part of a global trend toward healthcare cost containment and resulting changes in healthcare law and policy, including changes to Medicare, may impact our business in ways that we cannot currently predict, which could have a material adverse effect on our business and financial condition.

Political, economic and regulatory influences are subjecting the healthcare industry in the U.S. to fundamental changes, particularly given the current atmosphere of mounting criticism of prescription drug costs in the U.S. We expect there will continue to be legislative and regulatory proposals to change the healthcare system in ways that could impact our ability to sell our products profitably, as governmental oversight and scrutiny of biopharmaceutical companies is increasing. For example, we anticipate that the U.S. Congress, state legislatures, and federal and state regulators may adopt or accelerate adoption of new healthcare policies and reforms intended to curb healthcare costs, such as federal and state controls on reimbursement for drugs (including under Medicare, Medicaid and commercial health plans), new or increased requirements to pay prescription drug rebates and penalties to government health care programs, and additional pharmaceutical cost transparency policies that aim to require drug companies to justify their prices through required disclosures. This includes efforts by individual states in the U.S. to pass legislation and implement regulations designed to control pharmaceutical and biological product pricing, including by establishing Prescription Drug Affordability Boards (or similar entities) to review high-cost drugs and, in some cases, set upper payment limits and implementing marketing cost disclosure and transparency measures. Further, the IRA, among other things, requires the U.S. Department of Health and Human Services Secretary to negotiate, with respect to Medicare units and subject to a specified cap, the price of a set number of certain high Medicare spend drugs and biologicals per year starting in 2026, penalizes manufacturers of certain Medicare Parts B and D drugs for price increases above inflation, and makes several changes to the Medicare Part D benefit, including a limit on annual out-of-pocket costs and a change in manufacturer liability under the program, which could negatively affect our business and financial condition. CMS has issued final guidance implementing the Drug Price Negotiation Program in which it finalized certain policies governing the selection of drugs for negotiation. Among other things, CMS finalized definitions of “qualifying single source drug” and “marketed” that, especially if they persist, could further disincentivize innovation. In addition, under the Medicaid Drug Rebate Program, rebates owed by manufacturers are no longer subject to a cap on the rebate amount effective January 1, 2024, which may adversely affect our rebate liability. The foregoing may negatively impact our overall rebate and discount liability, which would have a negative adverse effect on our revenues.

On July 4, 2025, President Trump signed into law H.R.1, a budget bill, which includes significant reforms to Medicaid, Medicare, and Affordable Care Act premium tax credits. Among other things, these reforms are anticipated to significantly decrease Medicaid spending, which could reduce access to and reimbursement for our products, which could have a negative adverse effect on our revenues.

Legislative and regulatory proposals that have recently been considered include, among other things, proposals to limit the terms of patent litigation settlements with generic sponsors, to define certain conduct around patenting and new product development as unfair competition, to address the scope of orphan drug exclusivity and to facilitate the importation of drugs into the U.S. from other countries. Moreover, on April 15, 2025, the White House issued an executive order announcing a number of initiatives seeking to lower drug pricing. In addition, there has been recent interest in incorporating so-called Most Favored Nation pricing into the U.S. healthcare system, under which prices for drugs in the United States could be tied to foreign reference prices through a mechanism that is not yet defined, announced in a second executive order dated May 12, 2025. Legislative and regulatory proposals to reform the regulation of the pharmaceutical industry and reimbursement for pharmaceutical drugs are continually changing, and all such considerations may adversely affect our business and industry in ways that we cannot accurately predict.

54

---

Table of Contents

There is also ongoing activity related to health care coverage. The Affordable Care Act substantially changed the way healthcare is financed by both governmental and private insurers. These changes impacted previously existing government healthcare programs and have resulted in the development of new programs, including Medicare payment-for-performance initiatives. Further, federal and state policy makers have taken and may continue to try to take steps regarding health care coverage beyond the Affordable Care Act, which could have ramifications for the pharmaceutical industry. Additional legislative changes, regulatory changes, or guidance could be adopted, which may impact the marketing approvals and reimbursement for our products and product candidates. For example, there has been increasing legislative, regulatory, and enforcement interest in the U.S. with respect to drug pricing practices. There have been several Congressional inquiries and proposed and enacted federal and state legislation and regulatory initiatives designed to, among other things, bring more transparency to product pricing, evaluate the relationship between pricing and manufacturer patient programs, and reform government healthcare program reimbursement methodologies for drug products beyond the changes enacted by the IRA.

If new healthcare policies or reforms intended to curb healthcare costs are adopted or if we experience negative publicity with respect to pricing of our products or the pricing of pharmaceutical drugs generally, the prices that we charge for our products may be affected, our commercial opportunity may be limited and/or our revenues from sales of our products may be negatively impacted. We have periodically increased the price of our products, including Xywav and Xyrem most recently in January 2025, and there is no guarantee that we will not make similar price adjustments to our products in the future or that price adjustments we have taken or may take in the future will not negatively affect our sales volumes and revenues. There is no guarantee that such price adjustments will not negatively affect our reputation and our ability to secure and maintain reimbursement coverage for our products, which could limit the prices that we charge for our products, limit the commercial opportunities for our products and/or negatively impact revenues from sales of our products.

Government investigations or U.S. Congressional oversight with respect to drug pricing or our other business practices could cause us to incur significant expense and could distract us from the operation of our business and execution of our strategy. Any such investigation or hearing could also result in reduced market acceptance and demand for our products, could harm our reputation and our ability to market our products in the future, and could have a material adverse effect on our business, financial condition, results of operations and growth prospects. For more information, see the risk factor under the heading “We are subject to significant ongoing regulatory obligations and oversight, which may subject us to civil or criminal proceedings, investigations, or penalties and may result in significant additional expense and limit our ability to commercialize our products” in Part I, Item 1A of our Annual Report on Form 10-K for year ended December 31, 2024.

We expect that legislators, policymakers and healthcare insurance funds in Europe and other international markets will continue to propose and implement cost-containing measures to keep healthcare costs down. These measures could include limitations on the prices we will be able to charge for our products or the level of reimbursement available for these products from governmental authorities or third party payors as well as clawbacks and revenue caps. For example, in the U.K., the cap on NHS spending on branded medicines agreed between the U.K. government and industry for 2019 to 2023 has remained unaltered despite higher than expected growth in NHS use of branded medicines, resulting in significant increases to the industry level revenue clawback rate payable on sales of branded medicines to the NHS. In the EU, a trend in some EU member states is for medicinal products to be reimbursed based on the relative price of competitor products, which may undervalue newer innovative products. On April 26, 2023, the EC adopted proposals for a new Directive and a new Regulation, which revise and replace the existing EU general pharmaceutical legislation. This proposal includes increased transparency on research and development costs or public contributions to these costs with a view to strengthen the negotiating position of national competent authorities of the EU member states responsible for pricing and reimbursement, as well as reinforced cooperation with these authorities on pricing and reimbursement matters. The European Parliament and the Council of the European Union are currently engaged in interinstitutional negotiations to agree on the final version of the pharmaceutical legislation. Further, an increasing number of European and other foreign countries use prices for medicinal products established in other countries as “reference prices” to help determine the price of the product in their own territory. Consequently, a downward trend in prices of medicinal products in some countries could contribute to similar downward trends elsewhere.

Global trade issues and changes in and uncertainties with respect to trade policies and export regulations, including import and export license requirements, trade sanctions, tariffs and international trade disputes, could increase our costs, reduce the competitiveness of our products and otherwise have a material adverse effect on our business, financial condition, results of operations and growth prospects.

There is inherent risk, based on the complex relationships among the U.S. and the countries in which we conduct our business, that political, diplomatic, and national security factors can lead to global trade restrictions and changes in trade policies and export regulations that may adversely affect our business and operations. Compliance with applicable regulatory requirements regarding the export of our products may create delays in the introduction of our products in international markets or, in some cases, prevent the export of our products to some countries altogether. Furthermore, U.S. export control laws and economic sanctions prohibit the provision of certain products and services to countries, governments and persons targeted by

55

---

Table of Contents

U.S. sanctions. The U.S. and other countries have imposed and may continue to impose new trade restrictions and export regulations, have levied tariffs and taxes on certain goods, and could continue to significantly increase tariffs on a broad array of goods, including pharmaceutical and biological products.

While we are an Irish company headquartered in Dublin, Ireland, we derive the majority of our revenues from sales of our products in the U.S. We conduct business globally and our operations, including third-party suppliers, span numerous countries outside the U.S. In particular, we have a manufacturing and development facility in Athlone, Ireland where we manufacture Xywav and Xyrem, a manufacturing and development facility in Kent Science Park, U.K. where we produce Epidiolex/Epidyolex, and a manufacturing plant in Villa Guardia, Italy where we produce defibrotide drug substance. In addition, we rely on our supplier in China for the manufacture of Ziihera.

In 2025, President Trump signed a series of executive orders imposing various reciprocal tariffs. Most pharmaceutical products are currently exempt from the reciprocal tariffs. However, at President Trump's request, the U.S. Secretary of Commerce has initiated a Section 232 investigation that is expected to result in new tariffs on pharmaceutical products. Such tariffs will result in additional costs on our business, including costs with respect to APIs and other raw materials upon which our business depends and will generally increase our manufacturing costs. In addition, such tariffs will increase our supply chain complexity and could also potentially disrupt our existing supply chain. Moreover, other governments have imposed and may continue to impose retaliatory tariffs, trade restrictions or trade barriers on our products, which may impose additional costs and complexity on our business.

While we cannot at this time predict the ultimate impact of such tariffs, we anticipate that that our margins could be adversely affected beginning as early as fiscal 2026, depending on the ultimate scope and duration of tariffs imposed. Additionally, it is possible that such tariffs could affect imports of APIs and other raw materials used in our products, or our business may be adversely impacted by retaliatory trade measures taken by other countries, including restricted access to APIs or other raw materials used in our products, further disrupting our supply chain and increasing our costs. Given the nature of our products, relocating the manufacturing supply in response to tariffs and other trade restrictions would be a complex, costly and time-consuming process making it difficult for us to react quickly to a rapidly changing environment. In this regard, it would take a significant amount of time and expense to implement and execute the necessary technology transfer to, and to qualify, new suppliers for our products. If there are delays in qualifying new suppliers or facilities or a new supplier is unable to meet FDA’s or similar international regulatory body’s requirements for approval, there could be a shortage of the affected products for the marketplace or for use in clinical studies, or both, which could negatively impact our anticipated revenues.

Further, the continued threats of new or increased tariffs, sanctions, trade restrictions and trade barriers as well as ongoing changes in U.S. and foreign government trade policies, including potential modifications to existing trade agreements, have had and may continue to have a generally disruptive impact on the global economy and, therefore, negatively impact revenues from sales of our products. Given the volatility and uncertainty regarding the scope and duration of such tariffs and other aspects of U.S. and foreign government trade policies, the ultimate impact on our operations and financial results is uncertain and could be significant. In any event, further trade restrictions and export regulations, or new or increased tariffs, including further retaliatory measures, could increase our supply chain complexity and our manufacturing costs, decrease our margins, reduce the competitiveness of our products, or restrict our ability to sell our products, provide services or purchase necessary equipment and supplies. Any of these factors could have a material adverse effect on our business, financial condition, results of operations and growth prospects.

We may not realize the anticipated benefits from our acquisition of Chimerix.

On April 21, 2025, we completed the acquisition of all the outstanding shares of Chimerix Common Stock. As a result of this, Chimerix became an indirect wholly owned subsidiary of the Company. The success of the acquisition will depend, in part, on our ability to realize the anticipated benefits from successfully combining our and Chimerix’s operations and we plan on devoting management attention and resources to integrating our business practices and operations with Chimerix’s so that we can fully realize the anticipated benefits of the acquisition. In addition, Chimerix’s NDA for dordaviprone seeking accelerated approval for treatment of H3 K27M-mutant diffuse glioma in adult and pediatric patients with progressive disease following prior therapy may not be approved by FDA in a timely manner or at all. Moreover, dordaviprone, if approved, may not be successful or they may require significantly greater resources and investments than originally anticipated. The transaction could also result in the assumption of unknown or contingent liabilities. In addition, difficulties may arise during the process of combining the operations of our companies that could result in the failure to achieve revenue that we anticipate, the loss of key employees that may be difficult to replace in the very competitive pharmaceutical field, the failure to harmonize both companies’ corporate cultures, the disruption of each company’s ongoing businesses or inconsistencies in standards, controls, procedures and policies that adversely affect our ability to maintain relationships with suppliers, collaboration partners, clinical trial investigators or managers of our clinical trials. As a result, the anticipated benefits of the acquisition may not be realized fully within the expected timeframe or at all or may take longer to realize or cost more than expected, which could materially and adversely affect our business, financial condition, results of operations and growth prospects.

56

---

Table of Contents

We may not be able to successfully identify and acquire or in-license additional products or product candidates to grow our business, and, even if we are able to do so, we may otherwise fail to realize the anticipated benefits of these transactions.

In addition to continued investment in our research and development pipeline, we intend to grow our business by acquiring or in-licensing, and developing, including with collaboration partners, additional products and product candidates that we believe are highly differentiated and have significant commercial potential. However, we may be unable to identify or consummate suitable acquisition or in-licensing opportunities, and this inability could impair our ability to grow our business. Other companies, many of which may have substantially greater financial, sales and marketing resources, compete with us for these opportunities. Even if appropriate opportunities are available, we may not be able to successfully identify them, or we may not have the financial resources necessary to pursue them.

Even if we are able to successfully identify and acquire, in-license or develop additional products or product candidates, we may not be able to successfully manage the risks associated with integrating any products or product candidates into our portfolio or the risks arising from anticipated and unanticipated problems in connection with an acquisition or in-licensing or from financial difficulties of our collaborators. Further, while we seek to mitigate risks and liabilities of potential acquisitions and in-licensing transactions through, among other things, due diligence, there may be risks and liabilities that such due diligence efforts fail to discover, that are not disclosed to us, or that we inadequately assess. Any failure in identifying and managing these risks, liabilities and uncertainties effectively, could have a material adverse effect on our business, results of operations and financial condition. In addition, product and product candidate acquisitions, particularly when the acquisition takes the form of a merger or other business consolidation, such as our acquisition of GW have required, and any similar future transactions also will require, significant efforts and expenditures, including with respect to transition and integration activities. We may encounter unexpected difficulties, or incur substantial costs, in connection with potential acquisitions and similar transactions, which include:

•the need to incur substantial debt and/or engage in dilutive issuances of equity securities to pay for acquisitions;

•the need to comply with regulatory requirements, including in some cases clearance from the FTC;

•the potential need to secure shareholder approval of the transaction;

•the potential disruption of our historical core business;

•the strain on, and need to continue to expand, our existing operational, technical, financial and administrative infrastructure;

•the difficulties in integrating acquired products and product candidates into our portfolio;

•the difficulties in assimilating employees and corporate cultures;

•the failure to retain key managers and other personnel;

•the need to write down assets or recognize impairment charges;

•the diversion of our management’s attention to integration of operations and corporate and administrative infrastructures; and

•any unanticipated liabilities for activities of or related to the acquired business or its operations, products or product candidates.

As a result of these or other factors, products or product candidates we acquire, or obtain licenses to, may not produce the revenues, earnings or business synergies that we anticipated, may not result in regulatory approvals, and may not perform as expected. For example, in May 2021, we made a substantial investment in Epidiolex and certain other products and technologies acquired in our acquisition of GW. The total consideration paid by us for the entire issued share capital of GW was $7.2 billion. Additionally, in April 2025, we completed our acquisition of Chimerix, a biopharmaceutical company the lead clinical asset of which is dordaviprone, a novel first-in-class small molecule treatment in development for H3 K27M-mutant diffuse glioma, a rare, high-grade brain tumor that most commonly affects children and young adults. The total consideration paid by us for the outstanding shares of Chimerix Common Stock was $944.2 million. The success of our acquisition of GW and Chimerix will depend, in part, on our ability to realize the anticipated benefits from each of the acquisitions, which benefits may not be realized at the expected levels within the expected timeframe, or at all, or may take longer to realize or cost more than expected, which could materially and adversely affect our business, financial condition, results of operations and growth prospects. In this regard, in the third quarter of 2022, we recorded a $133.6 million asset impairment charge as a result of the decision to discontinue the nabiximols program that we acquired as part of our acquisition of GW. In any event, failure to manage effectively our growth through acquisitions or in-licensing transactions could adversely affect our growth prospects, business, results of operations and financial condition.

57

---

Table of Contents

It is difficult and costly to protect our proprietary rights, and we may not be able to ensure their protection.

Our commercial success depends in part on obtaining, maintaining and defending intellectual property protection for our products and product candidates, including protection of their use and methods of manufacturing. Our ability to protect our products and product candidates from unauthorized making, using, selling, offering to sell or importation by third parties depends on the extent to which we have rights under valid and enforceable patents or have adequately protected trade secrets that cover these activities.

The degree of protection to be afforded by our proprietary rights is difficult to predict because legal means afford only limited protection and may not adequately protect our rights or permit us to gain or keep our competitive advantage. For example:

•our patent applications, or those of our licensors or partners, may not result in issued patents;

•others may independently develop similar or therapeutically equivalent products without infringing our patents, or those of our licensors, such as products that are not covered by the claims of our patents, or for which fall outside the exclusive rights granted under our license agreements;

•our issued patents, or those of our licensors or partners, may be held invalid or unenforceable as a result of legal challenges by third parties or may be vulnerable to legal challenges as a result of changes in applicable law;

•our patents covering certain aspects of our products or the use thereof could be delisted from FDA's Orange Book as a result of challenges by third parties before FDA or the courts;

•competitors may manufacture products in countries where we have not applied for patent protection or that have a different scope of patent protection or that do not respect our patents; or

•others may be issued patents that prevent the sale of our products or require licensing and the payment of significant fees or royalties.

Patent enforcement generally must be sought on a country-by-country basis, and patent validity and infringement may be judged differently in different countries. The legal systems of certain countries, particularly certain developing countries, may lack maturity or consistency when it comes to the enforcement of patents and other intellectual property rights, particularly those relating to pharmaceuticals, which could make it difficult for us to stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and attention from other aspects of our business.

Changes in either the patent laws or in interpretations of patent laws in the U.S. and other countries may diminish the value of our intellectual property portfolio. Any patent may be challenged, and potentially invalidated or held unenforceable, including through patent litigation or through administrative procedures that permit challenges to patent validity. Patents can also be designed around by an ANDA or Section 505(b)(2) NDA that avoids infringement of our intellectual property.

In June 2021, we received notice from Lupin that it has filed with FDA an ANDA for a generic version of Xywav. The notice from Lupin included a “paragraph IV certification” with respect to ten of our patents listed in FDA’s Orange Book for Xywav on the date of our receipt of the notice. A paragraph IV certification is a certification by a generic applicant that patents covering the branded product are invalid, unenforceable, and/or will not be infringed by the manufacture, use or sale of the generic product. In April 2022, we received notice from Lupin that it had filed a paragraph IV certification regarding a newly-issued patent listed in the Orange Book for Xywav. In February 2023, we received notice from Teva that it had filed an ANDA seeking approval to market a generic version of Xywav, which notice included a paragraph IV certification with respect to certain of our patents listed in FDA’s Orange Book for Xywav. For additional information on litigation involving these matters, see Note 10, Commitments and Contingencies—Legal Proceedings of the Notes to Consolidated Financial Statements, included in Part I of this Quarterly Report on Form 10-Q.

We have settled patent litigation with each of the ten companies seeking to introduce generic versions of Xyrem in the U.S. by granting those companies licenses to launch their generic products (and in certain cases, an AG version of Xyrem) in advance of the expiration of the last of our patents. Notwithstanding our Xyrem patents and settlement agreements, additional third parties may also attempt to introduce generic versions of Xyrem, Xywav or other sodium oxybate products for treatment of cataplexy and/or EDS in narcolepsy that design around our patents or assert that our patents are invalid or otherwise unenforceable. Such third parties could launch a generic or 505(b)(2) product referencing Xyrem before the dates provided in our patents or settlement agreements. For example, we have several methods of use patents listed in the Orange Book, that expire in 2033 that cover treatment methods included in the Xyrem label related to a DDI with divalproex sodium. Although FDA has stated, in granting a Citizen Petition we submitted in 2016, that it would not approve any sodium oxybate ANDA referencing Xyrem that does not include the portions of the currently approved Xyrem label related to the DDI patents, we cannot predict whether a future ANDA filer, or a company that files a Section 505(b)(2) application for a drug referencing Xyrem, may pursue regulatory strategies to avoid infringing our DDI patents notwithstanding FDA’s response to the Citizen

58

---

Table of Contents

Petition, or whether any such strategy would be successful. Likewise, we cannot predict whether we will be able to maintain the validity of these patents or will otherwise obtain a judicial determination that a generic or other sodium oxybate product, its package insert or the generic sodium oxybate REMS or another separate REMS will infringe any of our patents or, if we prevail in proving infringement, whether a court will grant an injunction that prevents a future ANDA filer or other company introducing a different sodium oxybate product from marketing its product, or instead require that party to pay damages in the form of lost profits or a reasonable royalty.

Since Xyrem’s regulatory exclusivity has expired in the EU, we are aware that generic or hybrid generic applications have been approved by various EU regulatory authorities, and additional generic or hybrid generic applications may be submitted and approved.

We have settled patent litigation with each of the ten companies seeking to market a generic version of Epidiolex in the U.S. by granting each of the Epidiolex ANDA Filers a license to manufacture, market, and sell its own generic version of Epidiolex beginning in the very late 2030s, or earlier under certain circumstances, including but not limited to the launch of another generic Epidiolex product or a final decision that all unexpired claims of the Epidiolex patents are not infringed, or are invalid and/or unenforceable. Notwithstanding our patents listed in FDA’s Orange Book for Epidiolex and settlement agreements, additional third parties may also attempt to introduce generic versions of Epidiolex that design around our patents or assert that our patents are invalid or otherwise unenforceable.

In March 2025, we received a notice from Almaject that it had filed with FDA an ANDA for a generic version of Defitelio (defibrotide sodium). The notice from Almaject included a paragraph IV certification respect to certain of our patents listed in FDA’s Orange Book for Defitelio on the date of the notice. The listed patents relate generally to the Defitelio drug product and its approved use. For additional information on litigation involving this matter, see Note 10, Commitments and Contingencies—Legal Proceedings of the Notes to Consolidated Financial Statements, included in Part I of this Quarterly Report on Form 10-Q.

On May 13, 2021, we filed a patent infringement suit against Avadel and several of its corporate affiliates in the United States District Court for the District of Delaware. The suit alleges that Avadel’s product candidate FT218 will infringe five of our patents related to controlled release formulations of oxybate and the safe and effective distribution of oxybate. In March 2024, the jury upheld the validity of both of our asserted patents and awarded us damages for infringement for past sales of Lumryz in the U.S. For additional information on litigation involving this matter, see “Avadel Litigation” in Note 10, Commitments and Contingencies—Legal Proceedings of the Notes to Consolidated Financial Statements, included in Part I of this Quarterly Report on Form 10‑Q.

In July and August 2024, Zepzelca ANDA filers sent us notices that they had filed ANDAs seeking approval to market a generic version of Zepzelca (lurbinectedin), which notices each included a paragraph IV certification with respect to our Orange Book listed patent for Zepzelca on the date of the receipt of the applicable notice. In September 2024, we filed patent infringement suits against these ANDA filers. For additional information on litigation involving this matter, see “Zepzelca Patent Litigation” in Note 10, Commitments and Contingencies—Legal Proceedings of the Notes to Consolidated Financial Statements, included in Part I of this Quarterly Report on Form 10‑Q.

We also currently rely in part on trade secret protection for several of our products, including Defitelio, and product candidates. Trade secret protection does not protect information or inventions if another party develops that information or invention independently and establishing that a competitor developed a product through trade secret misappropriation rather than through legitimate means may be difficult to prove. We seek to protect our trade secrets and other unpatented proprietary information in part through confidentiality and invention agreements with our employees, consultants, advisors and partners. Nevertheless, our employees, consultants, advisors and partners may unintentionally or willfully disclose our proprietary information to competitors, and we may not have adequate remedies for such disclosures. Moreover, if a dispute arises with our employees, consultants, advisors or partners over the ownership of rights to inventions, including jointly developed intellectual property, we could lose patent protection or the confidentiality of our proprietary information, and possibly also lose the ability to pursue the development of certain new products or product candidates.

Disruptions at FDA, including due to a reduction in FDA’s workforce and/or inadequate funding for FDA, could prevent FDA from performing normal functions on which our business relies, which could negatively impact our business.

The ability of FDA to review and approve new products or review other regulatory submissions can be affected by a variety of factors, including statutory, regulatory and policy changes, inadequate government budget and funding levels, a reduction in FDA’s workforce and its ability to hire and retain key personnel. Disruptions at FDA and other agencies may also increase the time to meet with and receive agency feedback, review and/or approve our submissions, conduct inspections, issue regulatory guidance, or take other actions that facilitate the development, approval and marketing of regulated products, which would adversely affect our business. In addition, government proposals to reduce or eliminate budgetary deficits may include reduced allocations to FDA and other related government agencies. For example, the current President Trump administration recently established the Department of Government Efficiency, which implemented a federal government hiring freeze and

59

---

Table of Contents

announced certain additional efforts to reduce federal government employee headcount, including by attempting to eliminate 3,500 employees from FDA. It is unclear how these executive actions or other potential actions by the Trump Administration or other parts of the federal government will impact FDA or other regulatory authorities that oversee our business. The reductions in FDA’s workforce and budgetary pressures could significantly impact the ability of FDA to timely review and process our regulatory submissions or take other actions critical to the marketing of our products which could have a material adverse effect on our business. For example, our recently acquired product candidate dordaviprone has a target PDUFA action date of August 18, 2025. If approval of the dordaviprone NDA is granted by FDA, the approval may not happen on or prior to the target PDUFA action date, including as a result of recent reductions in FDA’s workforce. Any delay in obtaining, or inability to obtain, regulatory approval of the dordaviprone NDA would delay or prevent commercialization of the resulting product and could increase our costs. As a result, the anticipated benefits of the Chimerix acquisition may not be realized fully within the expected timeframe or at all or may take longer to realize or cost more than expected, which could materially and adversely affect our business, financial condition, results of operations and growth prospects.

Changes to tax laws relating to multinational corporations could adversely affect us.

The U.S. Congress, the EU, the OECD, and other government agencies in jurisdictions where we and our affiliates do business have had an extended focus on issues related to the taxation of multinational corporations. As a result of the focus on the taxation of multinational corporations, the tax laws in Ireland, the U.S. and other countries in which we and our affiliates do business could change on a prospective or retroactive basis, and any such changes could adversely affect us.

One example is the OECD’s initiative in the area of “base erosion and profit shifting,” including the 15% global minimum tax under Pillar Two. In December 2022, the EU agreed to implement this global minimum tax rate for EU member states by the start of 2024. In accordance with the EU directive, Ireland adopted legislation implementing Pillar Two on December 18, 2023, with effect from the start of 2024. Other jurisdictions in which we do business have also adopted legislation implementing Pillar Two. Pillar Two legislation could have an adverse impact on our effective tax rate, tax liabilities, and cash tax.

Further, the IRA, among other things, introduced new tax provisions, including a 15% corporate alternative minimum tax for certain large corporations, and a one percent excise tax on certain share repurchases by publicly traded corporations, including certain repurchases by specified domestic affiliates of publicly traded foreign corporations. These provisions became effective in 2023. The IRS has issued limited guidance on the corporate alternative minimum tax, the excise tax and the other tax provisions in the IRA, and much of this guidance has yet to be finalized. Final guidance under the IRA could adversely affect our tax provision, cash tax liability and effective tax rate.

The U.S. and other jurisdictions in which we operate continue to consider other changes in tax laws and regulations that apply to multinationals, including proposed legislation and guidance with respect to research and development expenditures and other guidance under the 2017 Tax Cuts and Jobs Act. On July 4, 2025, the U.S. adopted legislation that extended certain provisions of the 2017 Tax Cuts and Jobs Act, which would otherwise have expired on December 31, 2025, and introduced a number of other changes to U.S. tax laws, including immediate expensing of domestic research and experimentation expenditures. The new legislation also amended the foreign-derived intangible income provisions, increasing the effective tax rate for foreign-derived intangible income from the current rate of approximately 13% to approximately 14% and excluding research and experimentation expenditures and interest expense from the deductions allocated to gross income for purposes of the foreign derived deduction eligible income calculation. We are still evaluating the effect of the new legislation on our tax provision, cash tax liability and effective tax rate.

60

---

Table of Contents

Item 2.Unregistered Sales of Equity Securities, Use of Proceeds, and Issuer Purchases of Equity Securities

Issuer Purchases of Equity Securities

The following table summarizes purchases of our ordinary shares made by or on behalf of us or any of our “affiliated purchasers” as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934, as amended, during each fiscal month during the three-month period ended June 30, 2025:

			Total Number of Shares Purchased (1)						Average Price Paid per Share (2)						Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (3)						Maximum Number (or Approximate Dollar Value) of Shares that May Yet Be Purchased Under the Plans or Programs (4)
April 1 - April 30, 2025			—						$	—					—						$	349,999,951
May 1 - May 31, 2025			1,141,570						$	109.52					1,141,570						$	224,999,972
June 1 - June 30, 2025			—						$	—					—						$	224,999,972
Total			1,141,570						$	109.52					1,141,570

1.This table does not include ordinary shares that we withheld in order to satisfy tax withholding requirements in connection with the vesting and release of restricted stock units. All the ordinary shares reported in this column were purchased pursuant to our publicly announced share repurchase program.

2.Average price paid per ordinary share includes brokerage commissions.

3.On July 31, 2024, we announced that our board of directors had authorized the use of up to $500.0 million to repurchase our ordinary shares under the New Repurchase Program. Under the New Repurchase Program, which has no expiration date, we may repurchase ordinary shares from time to time by any methods and/or structures permitted by applicable law. The timing and amount of repurchases will depend on a variety of factors, including the price of our ordinary shares, alternative investment opportunities, restrictions under our outstanding credit agreement and the indenture for our Secured Notes, corporate and regulatory requirements and market conditions. The New Repurchase Program may be modified, suspended or discontinued at any time without our prior notice. The ordinary shares reported in the table above were purchased pursuant to the New Repurchase Program. As of June 30, 2025, the remaining amount authorized for repurchases under the New Repurchase Program was $225.0 million, exclusive of any brokerage commissions.

4.The dollar amount shown represents, as of the end of each period, the approximate dollar value of ordinary shares that may yet be purchased under the New Repurchase Program, exclusive of any brokerage commissions.

61

---

Table of Contents

Item 6.Exhibits

Exhibit Number			Description of Document
2.1+			Transaction Agreement, dated as of February 3, 2021, by and among Jazz Pharmaceuticals UK Holdings Limited, Jazz Pharmaceuticals Public Limited Company and GW Pharmaceuticals PLC (incorporated herein by reference to Exhibit 2.1 in Jazz Pharmaceuticals plc’s Current Report on Form 8-K (File No. 001-33500), as filed with the SEC on February 4, 2021).
2.2+			Agreement and Plan of Merger, dated as of March 4, 2025, by and among Chimerix, Inc, Jazz Pharmaceuticals Public Limited Company, and Pinetree Acquisition Sub, Inc. (incorporated by reference to Exhibit 2.1 in Jazz Pharmaceuticals plc’s Current Report on Form 8-K (File No. 001-33500), as filed with the SEC on March 5, 2025).
3.1			Amended and Restated Memorandum and Articles of Association of Jazz Pharmaceuticals plc, as amended on August 4, 2016 (incorporated herein by reference to Exhibit 3.1 in Jazz Pharmaceuticals plc’s Quarterly Report on Form 10-Q (File No. 001-33500) for the period ended June 30, 2016, as filed with the SEC on August 9, 2016).
10.1A#			License and Option Agreement, dated July 27, 2016, by and between Pfenex Inc. and Jazz Pharmaceuticals Ireland Limited.
10.1B#			Amended and Restated License and Option Agreement, dated December 18, 2017, by and between Pfenex Inc. and Jazz Pharmaceuticals Ireland Limited.
10.2†			Letter Agreement, dated as of July 30, 2025, by and between Jazz Pharmaceuticals, Inc. and Renee Gala.
31.1			Certification of Chief Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated under the Securities Exchange Act of 1934, as amended.
31.2			Certification of Chief Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) promulgated under the Securities Exchange Act of 1934, as amended.
32.1*			Certifications of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS			XBRL Instance Document - The instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH			Inline XBRL Taxonomy Extension Schema With Embedded Linkbase Document
104			Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

__________________

+    Certain portions of this exhibit have been omitted pursuant to Item 601(b)(2) of Regulation S-K.

#     Portions of this document have been omitted pursuant to Item 601(b)(10) of Regulations S-K because they are both not material and are the type that the Company treats as private and confidential.

†    Indicates management contract or compensatory plan.

*    The certification attached as Exhibit 32.1 accompanies this Quarterly Report on Form 10‑Q pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, and shall not be deemed “filed” by the Registrant for purposes of Section 18 of the Securities Exchange Act of 1934, as amended.

62

---

Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Date: August 6, 2025

 

JAZZ PHARMACEUTICALS PUBLIC LIMITED COMPANY (Registrant)
/s/ Bruce C. Cozadd
Bruce C. Cozadd
Chairman and Chief Executive Officer and Director (Principal Executive Officer)
/s/ Philip L. Johnson
Philip L. Johnson
Executive Vice President and Chief Financial Officer (Principal Financial Officer)
/s/ Patricia Carr
Patricia Carr
Senior Vice President, Chief Accounting Officer (Principal Accounting Officer)

63

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---

---