2025 Q2 false 0001370946--12-31 1 P3Y xbrli:shares iso4217:USD iso4217:USD xbrli:shares xbrli:pure oc:segment utr:MMBTU oc:intangible_asset oc:manufacturing_facility oc:site 0001370946 2025-01-01 2025-06-30 0001370946 2025-08-01 0001370946 2025-04-01 2025-06-30 0001370946 2024-04-01 2024-06-30 0001370946 2024-01-01 2024-06-30 0001370946 2025-06-30 0001370946 2024-12-31 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2025-06-30 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2024-12-31 0001370946 us-gaap:CommonStockMember 2025-06-30 0001370946 us-gaap:TreasuryStockCommonMember 2025-06-30 0001370946 2025-03-31 0001370946 2024-03-31 0001370946 2023-12-31 0001370946 2024-06-30 0001370946 us-gaap:CommonStockMember 2025-03-31 0001370946 us-gaap:CommonStockMember 2024-03-31 0001370946 us-gaap:CommonStockMember 2024-12-31 0001370946 us-gaap:CommonStockMember 2023-12-31 0001370946 us-gaap:CommonStockMember 2024-06-30 0001370946 us-gaap:TreasuryStockCommonMember 2025-03-31 0001370946 us-gaap:TreasuryStockCommonMember 2024-03-31 0001370946 us-gaap:TreasuryStockCommonMember 2024-12-31 0001370946 us-gaap:TreasuryStockCommonMember 2023-12-31 0001370946 us-gaap:TreasuryStockCommonMember 2025-04-01 2025-06-30 0001370946 us-gaap:TreasuryStockCommonMember 2024-04-01 2024-06-30 0001370946 us-gaap:TreasuryStockCommonMember 2025-01-01 2025-06-30 0001370946 us-gaap:TreasuryStockCommonMember 2024-01-01 2024-06-30 0001370946 us-gaap:TreasuryStockCommonMember 2024-06-30 0001370946 us-gaap:AdditionalPaidInCapitalMember 2025-03-31 0001370946 us-gaap:AdditionalPaidInCapitalMember 2024-03-31 0001370946 us-gaap:AdditionalPaidInCapitalMember 2024-12-31 0001370946 us-gaap:AdditionalPaidInCapitalMember 2023-12-31 0001370946 us-gaap:AdditionalPaidInCapitalMember 2025-04-01 2025-06-30 0001370946 us-gaap:AdditionalPaidInCapitalMember 2024-04-01 2024-06-30 0001370946 us-gaap:AdditionalPaidInCapitalMember 2025-01-01 2025-06-30 0001370946 us-gaap:AdditionalPaidInCapitalMember 2024-01-01 2024-06-30 0001370946 us-gaap:AdditionalPaidInCapitalMember 2025-06-30 0001370946 us-gaap:AdditionalPaidInCapitalMember 2024-06-30 0001370946 us-gaap:RetainedEarningsMember 2025-03-31 0001370946 us-gaap:RetainedEarningsMember 2024-03-31 0001370946 us-gaap:RetainedEarningsMember 2024-12-31 0001370946 us-gaap:RetainedEarningsMember 2023-12-31 0001370946 us-gaap:RetainedEarningsMember 2025-04-01 2025-06-30 0001370946 us-gaap:RetainedEarningsMember 2024-04-01 2024-06-30 0001370946 us-gaap:RetainedEarningsMember 2025-01-01 2025-06-30 0001370946 us-gaap:RetainedEarningsMember 2024-01-01 2024-06-30 0001370946 us-gaap:RetainedEarningsMember 2025-06-30 0001370946 us-gaap:RetainedEarningsMember 2024-06-30 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-03-31 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-03-31 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-12-31 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2023-12-31 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-04-01 2025-06-30 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-04-01 2024-06-30 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-01-01 2025-06-30 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-01-01 2024-06-30 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2025-06-30 0001370946 us-gaap:AccumulatedOtherComprehensiveIncomeMember 2024-06-30 0001370946 us-gaap:NoncontrollingInterestMember 2025-03-31 0001370946 us-gaap:NoncontrollingInterestMember 2024-03-31 0001370946 us-gaap:NoncontrollingInterestMember 2024-12-31 0001370946 us-gaap:NoncontrollingInterestMember 2023-12-31 0001370946 us-gaap:NoncontrollingInterestMember 2025-04-01 2025-06-30 0001370946 us-gaap:NoncontrollingInterestMember 2024-04-01 2024-06-30 0001370946 us-gaap:NoncontrollingInterestMember 2025-01-01 2025-06-30 0001370946 us-gaap:NoncontrollingInterestMember 2024-01-01 2024-06-30 0001370946 us-gaap:NoncontrollingInterestMember 2025-06-30 0001370946 us-gaap:NoncontrollingInterestMember 2024-06-30 0001370946 us-gaap:CommonStockMember 2025-04-01 2025-06-30 0001370946 us-gaap:CommonStockMember 2024-04-01 2024-06-30 0001370946 us-gaap:CommonStockMember 2025-01-01 2025-06-30 0001370946 us-gaap:CommonStockMember 2024-01-01 2024-06-30 0001370946 us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:SegmentContinuingOperationsMember 2024-06-30 0001370946 us-gaap:SegmentDiscontinuedOperationsMember 2025-06-30 0001370946 us-gaap:SegmentDiscontinuedOperationsMember 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2024-05-15 0001370946 oc:FirstCustomerMember us-gaap:CustomerConcentrationRiskMember us-gaap:AccountsReceivableMember 2025-01-01 2025-06-30 0001370946 oc:SecondCustomerMember us-gaap:CustomerConcentrationRiskMember us-gaap:AccountsReceivableMember 2025-01-01 2025-06-30 0001370946 us-gaap:RelatedPartyMember 2025-06-30 0001370946 us-gaap:RelatedPartyMember 2024-12-31 0001370946 2024-01-01 2024-12-31 0001370946 us-gaap:PropertyPlantAndEquipmentMember 2024-01-01 2024-12-31 0001370946 oc:OperatingLeaseRightOfUseAssetMember 2024-01-01 2024-12-31 0001370946 us-gaap:FiniteLivedIntangibleAssetsMember 2024-01-01 2024-12-31 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2025-02-13 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2025-02-13 2025-02-13 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2025-04-01 2025-06-30 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2025-01-01 2025-06-30 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2024-04-01 2024-06-30 0001370946 us-gaap:DiscontinuedOperationsDisposedOfBySaleMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember 2025-04-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 srt:EuropeMember 2025-04-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 srt:AsiaPacificMember 2025-04-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 oc:RestofWorldMember 2025-04-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-04-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-04-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-04-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember 2025-04-01 2025-06-30 0001370946 us-gaap:IntersegmentEliminationMember 2025-04-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember 2024-04-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 srt:EuropeMember 2024-04-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 srt:AsiaPacificMember 2024-04-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 oc:RestofWorldMember 2024-04-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-04-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-04-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-05-15 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember 2024-04-01 2024-06-30 0001370946 us-gaap:IntersegmentEliminationMember 2024-04-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember 2025-01-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 srt:EuropeMember us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 srt:EuropeMember 2025-01-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 srt:AsiaPacificMember 2025-01-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 oc:RestofWorldMember us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 oc:RestofWorldMember 2025-01-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:RoofingMember 2025-01-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:InsulationMember 2025-01-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember 2025-01-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember 2025-01-01 2025-06-30 0001370946 us-gaap:IntersegmentEliminationMember 2025-01-01 2025-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember oc:ResidentialMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:CommercialAndIndustrialSectorMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 srt:NorthAmericaMember 2024-01-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 srt:EuropeMember us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 srt:EuropeMember 2024-01-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 srt:AsiaPacificMember us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 srt:AsiaPacificMember 2024-01-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 oc:RestofWorldMember us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 oc:RestofWorldMember 2024-01-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:RoofingMember 2024-01-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:InsulationMember 2024-01-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-01-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember 2024-01-01 2024-06-30 0001370946 us-gaap:IntersegmentEliminationMember 2024-01-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember 2024-04-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:TotalSegmentsMember 2025-04-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:TotalSegmentsMember 2024-04-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:TotalSegmentsMember 2025-01-01 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:TotalSegmentsMember 2024-01-01 2024-06-30 0001370946 oc:AcquisitionRelatedCostsTransactionMember 2025-04-01 2025-06-30 0001370946 oc:AcquisitionRelatedCostsTransactionMember 2024-04-01 2024-06-30 0001370946 oc:AcquisitionRelatedCostsTransactionMember 2025-01-01 2025-06-30 0001370946 oc:AcquisitionRelatedCostsTransactionMember 2024-01-01 2024-06-30 0001370946 oc:AcquisitionRelatedCostsIntegrationMember 2025-04-01 2025-06-30 0001370946 oc:AcquisitionRelatedCostsIntegrationMember 2024-04-01 2024-06-30 0001370946 oc:AcquisitionRelatedCostsIntegrationMember 2025-01-01 2025-06-30 0001370946 oc:AcquisitionRelatedCostsIntegrationMember 2024-01-01 2024-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:RoofingMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:RoofingMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:OperatingSegmentsMember oc:InsulationMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:InsulationMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:DoorsMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:OperatingSegmentsMember oc:TotalSegmentsMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:OperatingSegmentsMember oc:TotalSegmentsMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 srt:NorthAmericaMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 srt:NorthAmericaMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 srt:EuropeMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 srt:EuropeMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 srt:AsiaPacificMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 srt:AsiaPacificMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 oc:OtherGeographicalMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 oc:OtherGeographicalMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:CorporateNonSegmentMember 2025-04-01 2025-06-30 0001370946 us-gaap:CorporateNonSegmentMember 2024-04-01 2024-06-30 0001370946 us-gaap:CorporateNonSegmentMember 2025-01-01 2025-06-30 0001370946 us-gaap:CorporateNonSegmentMember 2024-01-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentDiscontinuedOperationsMember 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentDiscontinuedOperationsMember 2024-12-31 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember 2024-12-31 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentContinuingOperationsMember 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentContinuingOperationsMember 2024-12-31 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentDiscontinuedOperationsMember 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentDiscontinuedOperationsMember 2024-12-31 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2025-04-01 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2024-04-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2025-01-01 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:CostOfSalesMember 2024-01-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentDiscontinuedOperationsMember 2025-04-01 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentDiscontinuedOperationsMember 2024-04-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentDiscontinuedOperationsMember 2025-01-01 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:DesignatedAsHedgingInstrumentMember us-gaap:SegmentDiscontinuedOperationsMember 2024-01-01 2024-06-30 0001370946 us-gaap:TreasuryLockMember us-gaap:NondesignatedMember 2025-04-01 2025-06-30 0001370946 us-gaap:TreasuryLockMember us-gaap:NondesignatedMember 2024-04-01 2024-06-30 0001370946 us-gaap:TreasuryLockMember us-gaap:NondesignatedMember 2025-01-01 2025-06-30 0001370946 us-gaap:TreasuryLockMember us-gaap:NondesignatedMember 2024-01-01 2024-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:OtherExpenseMember 2025-04-01 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:OtherExpenseMember 2024-04-01 2024-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:OtherExpenseMember 2025-01-01 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:OtherExpenseMember 2024-01-01 2024-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentDiscontinuedOperationsMember 2025-04-01 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentDiscontinuedOperationsMember 2024-04-01 2024-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentDiscontinuedOperationsMember 2025-01-01 2025-06-30 0001370946 us-gaap:ForeignExchangeContractMember us-gaap:NondesignatedMember us-gaap:SegmentDiscontinuedOperationsMember 2024-01-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember 2025-04-01 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember 2024-04-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember 2025-01-01 2025-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember 2024-01-01 2024-06-30 0001370946 us-gaap:EnergyRelatedDerivativeMember us-gaap:CashFlowHedgingMember 2025-06-30 0001370946 us-gaap:InterestRateLockCommitmentsMember 2020-12-31 0001370946 us-gaap:InterestRateLockCommitmentsMember 2025-01-01 2025-06-30 0001370946 us-gaap:InterestRateLockCommitmentsMember 2022-09-01 2022-09-30 0001370946 us-gaap:InterestRateLockCommitmentsMember 2022-12-31 0001370946 us-gaap:InterestRateLockCommitmentsMember 2022-12-01 2022-12-31 0001370946 us-gaap:InterestRateLockCommitmentsMember 2024-05-01 2024-05-31 0001370946 oc:SeniorNotesDue2034Member 2024-05-31 0001370946 us-gaap:ForeignExchangeForwardMember country:US 2025-06-30 0001370946 currency:EUR us-gaap:ForeignExchangeForwardMember 2025-06-30 0001370946 oc:RoofingMember 2024-12-31 0001370946 oc:InsulationMember 2024-12-31 0001370946 oc:DoorsMember 2024-12-31 0001370946 oc:RoofingMember 2025-01-01 2025-06-30 0001370946 oc:InsulationMember 2025-01-01 2025-06-30 0001370946 oc:DoorsMember 2025-01-01 2025-06-30 0001370946 oc:RoofingMember 2025-06-30 0001370946 oc:InsulationMember 2025-06-30 0001370946 oc:DoorsMember 2025-06-30 0001370946 2025-01-01 2025-03-31 0001370946 us-gaap:TrademarksAndTradeNamesMember 2025-06-30 0001370946 us-gaap:TrademarksAndTradeNamesMember 2024-12-31 0001370946 us-gaap:CustomerRelationshipsMember 2025-06-30 0001370946 us-gaap:CustomerRelationshipsMember 2024-12-31 0001370946 oc:TechnologyMember 2025-06-30 0001370946 oc:TechnologyMember 2024-12-31 0001370946 us-gaap:TrademarksMember 2025-06-30 0001370946 us-gaap:TrademarksMember 2024-12-31 0001370946 us-gaap:OtherIntangibleAssetsMember 2025-06-30 0001370946 us-gaap:OtherIntangibleAssetsMember 2024-12-31 0001370946 oc:EuropeanBuildingAndTechnicalInsulationTradeNameMember 2025-06-30 0001370946 srt:MaximumMember 2025-06-30 0001370946 us-gaap:LandMember 2025-06-30 0001370946 us-gaap:LandMember 2024-12-31 0001370946 oc:BuildingsAndLeaseholdImprovementsMember 2025-06-30 0001370946 oc:BuildingsAndLeaseholdImprovementsMember 2024-12-31 0001370946 us-gaap:MachineryAndEquipmentMember 2025-06-30 0001370946 us-gaap:MachineryAndEquipmentMember 2024-12-31 0001370946 us-gaap:ConstructionInProgressMember 2025-06-30 0001370946 us-gaap:ConstructionInProgressMember 2024-12-31 0001370946 us-gaap:OtherNonoperatingIncomeExpenseMember 2025-01-01 2025-06-30 0001370946 us-gaap:OtherNonoperatingIncomeExpenseMember 2025-04-01 2025-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2024-02-08 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2025-01-01 2025-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2024-05-15 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2024-01-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:MasoniteInternationalCorporationMasoniteMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember srt:ScenarioPreviouslyReportedMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember srt:RestatementAdjustmentMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:CustomerRelationshipsMember srt:MinimumMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:CustomerRelationshipsMember srt:MaximumMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:CustomerRelationshipsMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:TechnologyBasedIntangibleAssetsMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:TechnologyBasedIntangibleAssetsMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:TrademarksAndTradeNamesMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:TrademarksAndTradeNamesMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember us-gaap:TrademarksAndTradeNamesMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:DominanceIndustriesInc.Member 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:VanairDesignInc.Member 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SacopanInc.Member 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:MagnaForemostSDNBHDMember 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2025-04-01 2025-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentRemovalOfSalesOfArchitecturalSegmentMember 2024-04-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentRemovalOfSalesOfArchitecturalSegmentMember 2024-01-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentTransactionCostsIncurredByAcquireeMember 2024-04-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentTransactionCostsIncurredByAcquireeMember 2024-01-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentTransactionCostsIncurredByAcquirerMember 2024-04-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentTransactionCostsIncurredByAcquirerMember 2024-01-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentTaxImpactsOfProformaAdjustmentsMember 2024-04-01 2024-06-30 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:AdjustmentTaxImpactsOfProformaAdjustmentsMember 2024-01-01 2024-06-30 0001370946 country:CN oc:BuildingMaterialsBusinessMember 2024-11-04 0001370946 oc:BuildingMaterialsBusinessMember 2024-11-04 2024-11-04 0001370946 srt:RevisionOfPriorPeriodReclassificationAdjustmentMember 2024-12-31 0001370946 srt:RevisionOfPriorPeriodReclassificationAdjustmentMember 2025-06-30 0001370946 country:KR oc:BuildingMaterialsBusinessMember 2024-11-04 0001370946 oc:EmployeeSeveranceAndOtherExitCostsMember oc:BuildingMaterialsBusinessExitMember 2025-06-30 0001370946 oc:BuildingMaterialsBusinessExitMember 2025-01-01 2025-06-30 0001370946 oc:EmployeeSeveranceAndOtherExitCostsMember oc:AcquisitionRelatedRestructuringMember 2025-06-30 0001370946 oc:AcceleratedDepreciationAndInventoryWriteOffsMember oc:AcquisitionRelatedRestructuringMember 2025-06-30 0001370946 oc:AcquisitionRelatedRestructuringMember 2025-01-01 2025-06-30 0001370946 oc:AcceleratedDepreciationMember oc:AcquisitionRelatedRestructuringMember 2025-01-01 2025-06-30 0001370946 us-gaap:EmployeeSeveranceMember oc:AcquisitionRelatedRestructuringMember 2025-01-01 2025-06-30 0001370946 oc:EmployeeSeveranceAndOtherExitCostsMember oc:GlobalCompositesRestructuringMember srt:MinimumMember 2023-12-31 0001370946 oc:EmployeeSeveranceAndOtherExitCostsMember oc:GlobalCompositesRestructuringMember srt:MaximumMember 2023-12-31 0001370946 oc:AcceleratedDepreciationMember oc:GlobalCompositesRestructuringMember srt:MinimumMember 2023-12-31 0001370946 oc:AcceleratedDepreciationMember oc:GlobalCompositesRestructuringMember srt:MaximumMember 2023-12-31 0001370946 us-gaap:EmployeeSeveranceMember oc:GlobalCompositesRestructuringMember 2025-01-01 2025-06-30 0001370946 oc:EmployeeSeveranceAndOtherExitCostsMember oc:ProtectivePackagingExitMember 2023-05-31 0001370946 oc:AcceleratedDepreciationMember oc:ProtectivePackagingExitMember srt:MinimumMember 2023-05-31 0001370946 oc:AcceleratedDepreciationMember oc:ProtectivePackagingExitMember srt:MaximumMember 2023-05-31 0001370946 oc:ProtectivePackagingExitMember 2025-01-01 2025-06-30 0001370946 oc:EmployeeSeveranceAndAcceleratedDepreciationMember oc:WabashIndianaFacilityClosureMember 2023-12-31 0001370946 oc:WabashIndianaFacilityClosureMember 2025-01-01 2025-06-30 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2023-03-31 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2025-01-01 2025-06-30 0001370946 us-gaap:CostOfSalesMember oc:AcceleratedDepreciationMember 2025-04-01 2025-06-30 0001370946 us-gaap:CostOfSalesMember oc:AcceleratedDepreciationMember 2024-04-01 2024-06-30 0001370946 us-gaap:CostOfSalesMember oc:AcceleratedDepreciationMember 2025-01-01 2025-06-30 0001370946 us-gaap:CostOfSalesMember oc:AcceleratedDepreciationMember 2024-01-01 2024-06-30 0001370946 us-gaap:CostOfSalesMember oc:OtherExitCostsMember 2025-04-01 2025-06-30 0001370946 us-gaap:CostOfSalesMember oc:OtherExitCostsMember 2024-04-01 2024-06-30 0001370946 us-gaap:CostOfSalesMember oc:OtherExitCostsMember 2025-01-01 2025-06-30 0001370946 us-gaap:CostOfSalesMember oc:OtherExitCostsMember 2024-01-01 2024-06-30 0001370946 us-gaap:SellingGeneralAndAdministrativeExpensesMember oc:OtherExitCostsMember 2025-04-01 2025-06-30 0001370946 us-gaap:SellingGeneralAndAdministrativeExpensesMember oc:OtherExitCostsMember 2024-04-01 2024-06-30 0001370946 us-gaap:SellingGeneralAndAdministrativeExpensesMember oc:OtherExitCostsMember 2025-01-01 2025-06-30 0001370946 us-gaap:SellingGeneralAndAdministrativeExpensesMember oc:OtherExitCostsMember 2024-01-01 2024-06-30 0001370946 us-gaap:OtherExpenseMember us-gaap:EmployeeSeveranceMember 2025-04-01 2025-06-30 0001370946 us-gaap:OtherExpenseMember us-gaap:EmployeeSeveranceMember 2024-04-01 2024-06-30 0001370946 us-gaap:OtherExpenseMember us-gaap:EmployeeSeveranceMember 2025-01-01 2025-06-30 0001370946 us-gaap:OtherExpenseMember us-gaap:EmployeeSeveranceMember 2024-01-01 2024-06-30 0001370946 us-gaap:OtherExpenseMember oc:OtherExitCostsMember 2025-04-01 2025-06-30 0001370946 us-gaap:OtherExpenseMember oc:OtherExitCostsMember 2024-04-01 2024-06-30 0001370946 us-gaap:OtherExpenseMember oc:OtherExitCostsMember 2025-01-01 2025-06-30 0001370946 us-gaap:OtherExpenseMember oc:OtherExitCostsMember 2024-01-01 2024-06-30 0001370946 oc:AcquisitionRelatedRestructuringMember 2024-12-31 0001370946 oc:BuildingMaterialsBusinessExitMember 2024-12-31 0001370946 oc:GlobalCompositesRestructuringMember 2024-12-31 0001370946 oc:ProtectivePackagingExitMember 2024-12-31 0001370946 oc:WabashIndianaFacilityClosureMember 2024-12-31 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2024-12-31 0001370946 oc:GlobalCompositesRestructuringMember 2025-01-01 2025-06-30 0001370946 oc:AcquisitionRelatedRestructuringMember 2025-06-30 0001370946 oc:BuildingMaterialsBusinessExitMember 2025-06-30 0001370946 oc:GlobalCompositesRestructuringMember 2025-06-30 0001370946 oc:ProtectivePackagingExitMember 2025-06-30 0001370946 oc:WabashIndianaFacilityClosureMember 2025-06-30 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2025-06-30 0001370946 us-gaap:EmployeeSeveranceMember 2025-06-30 0001370946 oc:AcquisitionRelatedRestructuringMember 2023-12-31 0001370946 oc:GlobalCompositesRestructuringMember 2023-12-31 0001370946 oc:ProtectivePackagingExitMember 2023-12-31 0001370946 oc:WabashIndianaFacilityClosureMember 2023-12-31 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2023-12-31 0001370946 oc:AcquisitionRelatedRestructuringMember 2024-01-01 2024-06-30 0001370946 oc:GlobalCompositesRestructuringMember 2024-01-01 2024-06-30 0001370946 oc:ProtectivePackagingExitMember 2024-01-01 2024-06-30 0001370946 oc:WabashIndianaFacilityClosureMember 2024-01-01 2024-06-30 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2024-01-01 2024-06-30 0001370946 oc:AcquisitionRelatedRestructuringMember 2024-06-30 0001370946 oc:GlobalCompositesRestructuringMember 2024-06-30 0001370946 oc:ProtectivePackagingExitMember 2024-06-30 0001370946 oc:WabashIndianaFacilityClosureMember 2024-06-30 0001370946 oc:EuropeanOperatingStructureOptimizationMember 2024-06-30 0001370946 oc:Seniornotesdue2026Member 2025-06-30 0001370946 oc:Seniornotesdue2026Member 2024-12-31 0001370946 oc:SeniorNotesDue2027Member 2025-06-30 0001370946 oc:SeniorNotesDue2027Member 2024-12-31 0001370946 oc:SeniorNotesDue2028Masonite2028NotesMember 2025-06-30 0001370946 oc:SeniorNotesDue2028Masonite2028NotesMember 2024-12-31 0001370946 oc:SeniorNotesDue2029Member 2025-06-30 0001370946 oc:SeniorNotesDue2029Member 2024-12-31 0001370946 oc:SeniorNotes1At3.500Due2030Member 2025-06-30 0001370946 oc:SeniorNotes1At3.500Due2030Member 2024-12-31 0001370946 oc:SeniorNotes2At3.500Due2030Member 2025-06-30 0001370946 oc:SeniorNotes2At3.500Due2030Member 2024-12-31 0001370946 oc:SeniorNotesAt3.875Due2030Member 2025-06-30 0001370946 oc:SeniorNotesAt3.875Due2030Member 2024-12-31 0001370946 oc:SeniorNotesDue2034Member 2025-06-30 0001370946 oc:SeniorNotesDue2034Member 2024-12-31 0001370946 oc:SeniorNotesDue2036Member 2025-06-30 0001370946 oc:SeniorNotesDue2036Member 2024-12-31 0001370946 oc:SeniorNote2047Member 2025-06-30 0001370946 oc:SeniorNote2047Member 2024-12-31 0001370946 oc:SeniorNote2048Member 2025-06-30 0001370946 oc:SeniorNote2048Member 2024-12-31 0001370946 oc:SeniorNotesDue2054Member 2025-06-30 0001370946 oc:SeniorNotesDue2054Member 2024-12-31 0001370946 us-gaap:CapitalLeaseObligationsMember 2025-06-30 0001370946 us-gaap:CapitalLeaseObligationsMember 2024-12-31 0001370946 oc:SeniorNotesDue2027Member 2024-05-31 0001370946 oc:SeniorNotesDue2054Member 2024-05-31 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2030Masonite2030NotesMember 2024-05-01 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2030OwensCorning2030NotesMember 2024-05-01 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2030Masonite2030NotesMember 2024-05-22 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2030OwensCorning2030NotesMember 2024-05-22 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2028Masonite2028NotesMember 2024-04-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2028Masonite2028NotesMember 2024-05-13 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:SeniorNotesDue2028Masonite2028NotesMember 2024-05-16 2024-05-16 0001370946 oc:SeniorNotesDue2028Masonite2028NotesMember 2025-02-01 2025-02-01 0001370946 oc:SeniorNotesAt3.875Due2030Member 2020-05-12 0001370946 oc:SeniorNotesDue2029Member 2019-08-12 0001370946 oc:SeniorNotesDue2022Member 2019-08-12 2019-08-12 0001370946 oc:SeniorNotesDue2036Member 2019-08-12 2019-08-12 0001370946 oc:SeniorNote2048Member 2018-01-25 0001370946 oc:SeniorRevolvingCreditFacilityBMember 2018-01-01 2018-03-31 0001370946 oc:SeniorNote2047Member 2017-06-26 0001370946 oc:SeniorNotesDue2019Member 2017-06-26 2017-06-26 0001370946 oc:SeniorNotesDue2036Member 2017-06-26 2017-06-26 0001370946 oc:Seniornotesdue2026Member 2016-08-08 0001370946 oc:SeniorNotesDue2016Member 2016-08-08 2016-08-08 0001370946 oc:SeniorNotesDue2024Member 2014-11-12 0001370946 oc:SeniorNotesDue2016Member 2014-11-12 2014-11-12 0001370946 oc:SeniorNotesDue2019Member 2014-11-12 2014-11-12 0001370946 oc:SeniorNotesDue2024Member 2024-10-01 2024-12-31 0001370946 oc:SeniorNotesDue2036Member 2006-10-31 0001370946 oc:SeniorRevolvingCreditFacilityBMember 2025-03-04 0001370946 oc:SeniorRevolvingCreditFacilityBMember 2025-03-05 0001370946 oc:SeniorRevolvingCreditFacilityBMember 2025-02-01 2025-02-01 0001370946 oc:SeniorRevolvingCreditFacilityBMember 2025-06-30 0001370946 oc:LetterOfCreditUnderReceivablesPurchaseAgreementMember 2025-02-01 2025-02-01 0001370946 oc:A364DayCreditFacilityMember 2024-03-01 0001370946 oc:A364DayCreditFacilityMember 2025-03-01 2025-03-01 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:A364DayCreditFacilityMember 2024-05-01 2024-05-31 0001370946 us-gaap:CommercialPaperMember 2025-03-05 0001370946 us-gaap:CommercialPaperMember 2025-03-01 2025-03-01 0001370946 us-gaap:CommercialPaperMember 2025-06-30 0001370946 oc:SuperfundSitesMember 2025-06-30 0001370946 oc:OwnedorFomerlyOwnedSitesMember 2025-06-30 0001370946 2024-01-01 2024-03-31 0001370946 oc:StockPlan2023Member 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentContinuingOperationsMember 2025-04-01 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentContinuingOperationsMember 2024-04-01 2024-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentContinuingOperationsMember 2025-01-01 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentContinuingOperationsMember 2024-01-01 2024-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentDiscontinuedOperationsMember 2025-04-01 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentDiscontinuedOperationsMember 2024-04-01 2024-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentDiscontinuedOperationsMember 2025-01-01 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember us-gaap:SegmentDiscontinuedOperationsMember 2024-01-01 2024-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember 2025-04-01 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember 2024-04-01 2024-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember 2025-01-01 2025-06-30 0001370946 us-gaap:GeneralAndAdministrativeExpenseMember 2024-01-01 2024-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember srt:MinimumMember 2025-01-01 2025-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember srt:MaximumMember 2025-01-01 2025-06-30 0001370946 us-gaap:RestrictedStockMember 2025-01-01 2025-06-30 0001370946 oc:PerformanceRestrictedStockUnitsPRSUsMember oc:MasoniteInternationalCorporationMasoniteMember 2024-05-15 2024-05-15 0001370946 us-gaap:RestrictedStockUnitsRSUMember oc:MasoniteInternationalCorporationMasoniteMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:GrantTrancheOneMember oc:PerformanceRestrictedStockUnitsPRSUsMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:GrantTrancheTwoMember oc:PerformanceRestrictedStockUnitsPRSUsMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember oc:GrantTrancheThreeMember oc:PerformanceRestrictedStockUnitsPRSUsMember 2024-05-15 2024-05-15 0001370946 oc:MasoniteInternationalCorporationMasoniteMember 2025-06-30 0001370946 oc:RestrictedStockUnitsRSUsConvertedMasoniteEquityAwardsMember 2025-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember oc:MasoniteInternationalCorporationMasoniteMember 2025-01-01 2025-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember oc:MasoniteInternationalCorporationMasoniteMember 2025-06-30 0001370946 us-gaap:RestrictedStockMember 2024-12-31 0001370946 us-gaap:RestrictedStockMember 2025-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember 2025-06-30 0001370946 oc:RestrictedStockUnitsRSUsOwensCorningStockPlansMember 2025-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember 2025-01-01 2025-06-30 0001370946 us-gaap:RestrictedStockUnitsRSUMember 2024-01-01 2024-06-30 0001370946 oc:InternalBasedPerformanceMetricMember 2025-01-01 2025-06-30 0001370946 oc:InternalBasedPerformanceMetricMember 2025-01-01 2025-06-30 0001370946 oc:InternalBasedPerformanceMetricMember 2024-01-01 2024-06-30 0001370946 oc:ExternalBasedPerformanceMetricMember 2025-01-01 2025-06-30 0001370946 oc:PerformanceStockUnitsPSUs2018Member 2025-01-01 2025-06-30 0001370946 oc:PerformanceStockUnitsPSUs2018Member 2024-01-01 2024-06-30 0001370946 oc:ExternalBasedPerformanceMetricMember 2025-01-01 2025-06-30 0001370946 oc:PerformanceStockUnitsPsusMember 2025-06-30 0001370946 oc:PerformanceStockUnitsPsusMember 2025-01-01 2025-06-30 0001370946 oc:PerformanceStockUnitsPsusMember 2024-12-31 0001370946 oc:PerformanceStockUnitsPsusMember 2025-01-01 2025-06-30 0001370946 oc:PerformanceStockUnitsPsusMember 2025-06-30 0001370946 2013-04-18 0001370946 us-gaap:EmployeeStockMember 2025-01-01 2025-06-30 0001370946 oc:EmployeeStockPurchasePlanMember 2020-04-16 0001370946 oc:EmployeeStockPurchasePlanMember 2025-06-30 0001370946 us-gaap:EmployeeStockOptionMember 2025-04-01 2025-06-30 0001370946 us-gaap:EmployeeStockOptionMember 2025-01-01 2025-06-30 0001370946 us-gaap:EmployeeStockOptionMember 2024-04-01 2024-06-30 0001370946 us-gaap:EmployeeStockOptionMember 2024-01-01 2024-06-30 0001370946 us-gaap:EmployeeStockMember 2025-06-30 0001370946 oc:A2025RepurchaseAuthorizationMember 2025-05-13 0001370946 oc:CombinedRepurchaseProgramsMember 2022-12-01 0001370946 oc:CombinedRepurchaseProgramsMember 2025-01-01 2025-06-30 0001370946 oc:CombinedRepurchaseProgramsMember 2025-06-30 0001370946 oc:CombinedRepurchaseProgramsMember 2024-01-01 2024-06-30 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2025-03-31 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2024-03-31 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2024-12-31 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2023-12-31 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2025-04-01 2025-06-30 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2024-04-01 2024-06-30 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2025-01-01 2025-06-30 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2024-01-01 2024-06-30 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2025-06-30 0001370946 us-gaap:AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember 2024-06-30 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2025-03-31 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2024-03-31 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2024-12-31 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2023-12-31 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2025-04-01 2025-06-30 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2024-04-01 2024-06-30 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2025-01-01 2025-06-30 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2024-01-01 2024-06-30 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2025-06-30 0001370946 us-gaap:AccumulatedDefinedBenefitPlansAdjustmentNetTransitionIncludingPortionAttributableToNoncontrollingInterestMember 2024-06-30 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2025-03-31 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2024-03-31 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2024-12-31 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2023-12-31 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2025-04-01 2025-06-30 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2024-04-01 2024-06-30 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2025-01-01 2025-06-30 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2024-01-01 2024-06-30 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2025-06-30 0001370946 us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember 2024-06-30
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
______________________________________
FORM 10-Q
______________________________________
☑ 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: 1-33100
______________________________________
Owens Corning
(Exact name of registrant as specified in its charter)
______________________________________

Delaware | 43-2109021
(State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.)

One Owens Corning Parkway
Toledo, OH 43659
(Address of principal executive offices) (Zip Code)
(419) 248-8000
(Registrant’s telephone number, including area code)
N/A
(Former name, former address and former fiscal year, if changed since last report)
______________________________________

Securities registered pursuant to Section 12(b) of the Act:
Title of each class |  | Trading Symbol(s) |  | Name of each exchange on which registered
Common Stock, par value $0.01 per share |  | OC |  | New York Stock Exchange

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 þ 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 (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes þ 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 | þ | 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 þ
As of August 1, 2025, 83,627,558 shares of the registrant’s common stocks, par value $0.01 per share, were outstanding.

OWENS CORNING AND SUBSIDIARIES
INDEX TO QUARTERLY REPORT ON FORM 10-Q
June 30, 2025

|  |  |  | Page
Cover Page | 1
PART I – FINANCIAL INFORMATION (unaudited) |
| Item 1. |  | Financial Statements | 3
|  |  | Consolidated Statements of Earnings | 3
|  |  | Consolidated Statements of Comprehensive Earnings | 4
|  |  | Consolidated Balance Sheets | 5
|  |  | Consolidated Statements of Stockholders’ Equity | 6
|  |  | Consolidated Statements of Cash Flows | 7
|  |  | Notes to Consolidated Financial Statements | 8
|  |  | 1. General | 8
|  |  | 2. Discontinued Operations | 10
|  |  | 3. Segment Information | 12
|  |  | 4. Inventories | 16
|  |  | 5. Derivative Financial Instruments | 16
|  |  | 6. Goodwill and Other Intangible Assets | 19
|  |  | 7. Property, Plant and Equipment | 21
|  |  | 8. Acquisitions | 22
|  |  | 9. Assets Held for Sale | 26
|  |  | 10. Warranties | 26
|  |  | 11. Restructuring | 27
|  |  | 12. Debt | 29
|  |  | 13. Contingent Liabilities and Other Matters | 32
|  |  | 14. Stock Compensation | 33
|  |  | 15. Earnings per Share | 36
|  |  | 16. Income Taxes | 37
|  |  | 17. Changes in Accumulated Other Comprehensive Deficit | 38
| Item 2. |  | Management’s Discussion and Analysis of Financial Condition and Results of Operations | 39
| Item 3. |  | Quantitative and Qualitative Disclosures About Market Risk | 51
| Item 4. |  | Controls and Procedures | 51
PART II – OTHER INFORMATION |
| Item 1. |  | Legal Proceedings | 52
| Item 1A. |  | Risk Factors | 52
| Item 2. |  | Unregistered Sales of Equity Securities and Use of Proceeds | 52
| Item 3. |  | Defaults Upon Senior Securities | 52
| Item 4. |  | Mine Safety Disclosures | 52
| Item 5. |  | Other Information | 52
| Item 6. |  | Exhibits | 53
|  |  | Signatures | 54

Table of Contents
PART I
ITEM 1. FINANCIAL STATEMENTS
OWENS CORNING AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF EARNINGS
(unaudited)
(in millions, except per share amounts)

| Three Months Ended June 30, | Six Months Ended June 30,
| 2025 | 2024 | 2025 | 2024
NET SALES | $ | 2,747 |  | $ | 2,497 |  | $ | 5,277 |  | $ | 4,514 |
COST OF SALES | 1,889 |  | 1,684 |  | 3,694 |  | 3,073 |
Gross margin | 858 |  | 813 |  | 1,583 |  | 1,441 |
OPERATING EXPENSES |  |  |  |
Marketing and administrative expenses | 263 |  | 229 |  | 524 |  | 419 |
Science and technology expenses | 37 |  | 32 |  | 72 |  | 59 |
Loss on sale of business | 24 |  | — |  | 26 |  | — |
Other expense, net | 29 |  | 134 |  | 49 |  | 169 |
Total operating expenses | 353 |  | 395 |  | 671 |  | 647 |
OPERATING INCOME | 505 |  | 418 |  | 912 |  | 794 |
Non-operating income | — |  | (1) |  | — |  | (1) |
EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES | 505 |  | 419 |  | 912 |  | 795 |
Interest expense, net | 63 |  | 63 |  | 127 |  | 79 |
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES | 442 |  | 356 |  | 785 |  | 716 |
Income tax expense | 110 |  | 101 |  | 198 |  | 184 |
Equity in net earnings of affiliates | 1 |  | 2 |  | 1 |  | 2 |
NET EARNINGS FROM CONTINUING OPERATIONS | 333 |  | 257 |  | 588 |  | 534 |
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax | 29 |  | 29 |  | (319) |  | 50 |
NET EARNINGS | $ | 362 |  | $ | 286 |  | $ | 269 |  | $ | 584 |
NET EARNINGS FROM CONTINUING OPERATIONS | $ | 333 |  | $ | 257 |  | $ | 588 |  | $ | 534 |
Net (loss) earnings attributable to non-redeemable and redeemable noncontrolling interests | (1) |  | 1 |  | (1) |  | — |
NET EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING | 334 |  | 256 |  | 589 |  | 534 |
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax | 29 |  | 29 |  | (319) |  | 50 |
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING | $ | 363 |  | $ | 285 |  | $ | 270 |  | $ | 584 |
EARNINGS (LOSS) PER COMMON SHARE ATTRIBUTABLE TO OWENS CORNING COMMON STOCKHOLDERS |  |  |  |
Basic - continuing operations | $ | 3.93 |  | $ | 2.94 |  | $ | 6.90 |  | $ | 6.12 |
Basic - discontinued operations | $ | 0.34 |  | $ | 0.33 |  | $ | (3.74) |  | $ | 0.57 |
Basic | $ | 4.27 |  | $ | 3.27 |  | $ | 3.16 |  | $ | 6.69 |
Diluted - continuing operations | $ | 3.91 |  | $ | 2.91 |  | $ | 6.86 |  | $ | 6.06 |
Diluted - discontinued operations | $ | 0.34 |  | $ | 0.33 |  | $ | (3.71) |  | $ | 0.57 |
Diluted | $ | 4.25 |  | $ | 3.24 |  | $ | 3.15 |  | $ | 6.63 |

The accompanying Notes to the Consolidated Financial Statements are an integral part of these Statements.
3

Table of Contents
OWENS CORNING AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS
(unaudited)
(in millions)

|  | Three Months Ended June 30, | Six Months Ended June 30,
|  | 2025 | 2024 | 2025 | 2024
NET EARNINGS | $ | 362 |  | $ | 286 |  | $ | 269 |  | $ | 584 |
Other comprehensive income (loss), net of tax: |  |  |  |
| Currency translation adjustment (net of tax of $0 and $0 for the three months ended June 30, 2025 and 2024, respectively, and $0 and $0 for the six months ended June 30, 2025 and 2024, respectively) | 182 |  | (63) |  | 257 |  | (105) |
| Pension and other postretirement adjustment (net of tax of $0 and $0 for the three months ended June 30, 2025 and 2024, respectively, and $0 and $0 for the six months ended June 30, 2025 and 2024, respectively) | (5) |  | (1) |  | (8) |  | (1) |
| Hedging adjustment (net of tax of $1 and $(1) for the three months ended June 30, 2025 and 2024, respectively, and $0 and $(3) for the six months ended June 30, 2025 and 2024, respectively) | (6) |  | 5 |  | (5) |  | 10 |
| Total other comprehensive income (loss), net of tax | 171 |  | (59) |  | 244 |  | (96) |
COMPREHENSIVE EARNINGS | 533 |  | 227 |  | 513 |  | 488 |
Comprehensive earnings (loss) attributable to non-redeemable and redeemable noncontrolling interests | 2 |  | — |  | 2 |  | (2) |
COMPREHENSIVE EARNINGS ATTRIBUTABLE TO OWENS CORNING | $ | 531 |  | $ | 227 |  | $ | 511 |  | $ | 490 |

The accompanying Notes to the Consolidated Financial Statements are an integral part of these Statements.
4

Table of Contents
OWENS CORNING AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(unaudited)
(in millions, except per share amounts)

ASSETS | June 30, 2025 | December 31, 2024
CURRENT ASSETS |  |
Cash and cash equivalents | $ | 230 |  | $ | 321 |
Receivables, less allowance of $3 at June 30, 2025 and $4 at December 31, 2024 | 1,644 |  | 1,140 |
Inventories | 1,459 |  | 1,327 |
Other current assets | 160 |  | 163 |
Current assets of discontinued operations | 423 |  | 427 |
Total current assets | 3,916 |  | 3,378 |
Property, plant and equipment, net | 3,952 |  | 3,818 |
Operating lease right-of-use assets | 417 |  | 411 |
Goodwill | 2,814 |  | 2,745 |
Intangible assets, net | 2,664 |  | 2,680 |
Deferred income taxes | 8 |  | 8 |
Other non-current assets | 461 |  | 456 |
Non-current assets of discontinued operations | 251 |  | 579 |
TOTAL ASSETS | $ | 14,483 |  | $ | 14,075 |
LIABILITIES AND EQUITY |  |
CURRENT LIABILITIES |  |
Accounts payable | $ | 1,253 |  | $ | 1,301 |
Current operating lease liabilities | 82 |  | 83 |
Short-term debt | 420 |  | 1 |
Long-term debt - current portion | 36 |  | 32 |
Other current liabilities | 601 |  | 654 |
Current liabilities of discontinued operations | 182 |  | 226 |
Total current liabilities | 2,574 |  | 2,297 |
Long-term debt, net of current portion | 5,080 |  | 5,067 |
Pension plan liability | 45 |  | 42 |
Other employee benefits liability | 99 |  | 101 |
Non-current operating lease liabilities | 359 |  | 348 |
Deferred income taxes | 695 |  | 719 |
Other liabilities | 318 |  | 286 |
Non-current liabilities of discontinued operations | 109 |  | 95 |
Total liabilities | $ | 9,279 |  | $ | 8,955 |
OWENS CORNING STOCKHOLDERS’ EQUITY |  |
Preferred stock, par value $0.01 per share (a) | — |  | — |
Common stock, par value $0.01 per share (b) | 1 |  | 1 |
Additional paid-in capital | 4,225 |  | 4,228 |
Accumulated earnings | 5,376 |  | 5,224 |
Accumulated other comprehensive deficit | (450) |  | (691) |
Cost of common stock in treasury (c) | (3,989) |  | (3,685) |
Total Owens Corning stockholders’ equity | 5,163 |  | 5,077 |
Noncontrolling interests | 41 |  | 43 |
Total equity | 5,204 |  | 5,120 |
TOTAL LIABILITIES AND EQUITY | $ | 14,483 |  | $ | 14,075 |

(a)10 shares authorized; none issued or outstanding at June 30, 2025 and December 31, 2024
(b)400 shares authorized; 135.5 issued and 83.6 outstanding at June 30, 2025; 135.5 issued and 85.4 outstanding at December 31, 2024
(c)51.9 shares at June 30, 2025 and 50.1 shares at December 31, 2024
The accompanying Notes to the Consolidated Financial Statements are an integral part of these Statements.
5

Table of Contents
OWENS CORNING AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
(unaudited)
(in millions)

| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2025 |  | 2024 |  | 2025 |  | 2024
Total equity, beginning of period | $ | 4,924 |  |  | $ | 5,247 |  |  | $ | 5,120 |  |  | $ | 5,185 |
Common stock, $0.01 par value per share |  |  |  |  |  |  |
Beginning of period | 1 |  |  | 1 |  |  | 1 |  |  | 1 |
End of period | 1 |  |  | 1 |  |  | 1 |  |  | 1 |
Treasury stock, $0.01 par value per share |  |  |  |  |  |  |
Beginning of period | (3,782) |  |  | (3,433) |  |  | (3,685) |  |  | (3,292) |
Issuance of common stock under share-based payment plans | 18 |  |  | 60 |  |  | 58 |  |  | 81 |
Purchase of treasury stock | (225) |  |  | (18) |  |  | (362) |  |  | (180) |
End of period | (3,989) |  |  | (3,391) |  |  | (3,989) |  |  | (3,391) |
Additional paid-in capital (APIC): |  |  |  |  |  |  |
Beginning of period | 4,209 |  |  | 4,159 |  |  | 4,228 |  |  | 4,166 |
Redeemable noncontrolling interest adjustment to redemption value | — |  |  | — |  |  | — |  |  | (1) |
Issuance of common stock under share-based payment plans | (2) |  |  | (47) |  |  | (42) |  |  | (67) |
Stock-based compensation expense | 18 |  |  | 39 |  |  | 39 |  |  | 53 |
Fair value of awards included in transaction consideration | — |  |  | 35 |  |  | — |  |  | 35 |
End of period | 4,225 |  |  | 4,186 |  |  | 4,225 |  |  | 4,186 |
Accumulated earnings: |  |  |  |  |  |  |
Beginning of period | 5,072 |  |  | 5,041 |  |  | 5,224 |  |  | 4,794 |
Net earnings attributable to Owens Corning | 363 |  |  | 285 |  |  | 270 |  |  | 584 |
Dividends declared (a) | (59) |  |  | (53) |  |  | (118) |  |  | (105) |
End of period | 5,376 |  |  | 5,273 |  |  | 5,376 |  |  | 5,273 |
Accumulated other comprehensive earnings/deficit (AOCI): |  |  |  |  |  |  |
Beginning of period | (618) |  |  | (539) |  |  | (691) |  |  | (503) |
Currency translation adjustment | 179 |  |  | (62) |  |  | 254 |  |  | (103) |
Pension and other postretirement adjustment (net of tax) | (5) |  |  | (1) |  |  | (8) |  |  | (1) |
Deferred gain on hedging transactions (net of tax) | (6) |  |  | 5 |  |  | (5) |  |  | 10 |
End of period | (450) |  |  | (597) |  |  | (450) |  |  | (597) |
Noncontrolling Interest (NCI): |  |  |  |  |  |  |
Beginning of period | 42 |  |  | 18 |  |  | 43 |  |  | 19 |
Net (loss) earnings attributable to non-redeemable noncontrolling interests | (1) |  |  | 1 |  |  | (1) |  |  | 1 |
Dividends distributed to non-redeemable noncontrolling interests | — |  |  | — |  |  | (1) |  |  | — |
Currency translation adjustment | 3 |  |  | (1) |  |  | 3 |  |  | (2) |
(Reductions) purchases of noncontrolling interest | (3) |  |  | 35 |  |  | (3) |  |  | 35 |
End of period | 41 |  |  | 53 |  |  | 41 |  |  | 53 |
Total equity, end of period | $ | 5,204 |  |  | $ | 5,525 |  |  | $ | 5,204 |  |  | $ | 5,525 |
Common shares outstanding: |  |  |  |  |  |  |
Beginning of period | 85.0 |  |  | 86.7 |  |  | 85.4 |  |  | 87.2 |
Issuance of common stock under share-based payment plans | 0.2 |  |  | 0.3 |  |  | 0.7 |  |  | 0.9 |
Purchase of treasury stock | (1.6) |  |  | (0.1) |  |  | (2.5) |  |  | (1.2) |
End of period | 83.6 |  |  | 86.9 |  |  | 83.6 |  |  | 86.9 |
Treasury shares outstanding: |  |  |  |  |  |  |
Beginning of period | 50.5 |  |  | 48.8 |  |  | 50.1 |  |  | 48.3 |
Issuance of common stock under share-based payment plans | (0.2) |  |  | (0.3) |  |  | (0.7) |  |  | (0.9) |
Purchase of treasury stock | 1.6 |  |  | 0.1 |  |  | 2.5 |  |  | 1.2 |
End of period | 51.9 |  |  | 48.6 |  |  | 51.9 |  |  | 48.6 |

(a)Dividend declarations of $0.69 and $0.60 per share as of the three months ended June 30, 2025 and June 30, 2024, respectively. Dividend declarations of $1.38 and $1.20 per share as of the six months ended June 30, 2025 and June 30, 2024, respectively.
The accompanying Notes to the Consolidated Financial Statements are an integral part of these Statements.
6

Table of Contents
OWENS CORNING AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(unaudited)
(in millions)

| Six Months Ended June 30,
| 2025 | 2024
NET CASH FLOW PROVIDED BY OPERATING ACTIVITIES |  |
Net earnings | $ | 269 |  | $ | 584 |
Adjustments to reconcile net earnings to cash provided from operating activities: |  |
Loss on discontinued operations | 381 |  | — |
Depreciation and amortization | 331 |  | 298 |
Loss on sale of business | 26 |  | — |
Deferred income taxes | 4 |  | (26) |
Stock-based compensation expense | 39 |  | 53 |
Other adjustments to reconcile net earnings to cash from operating activities | (42) |  | (8) |
Changes in operating assets and liabilities | (707) |  | (376) |
Pension fund contribution | (3) |  | (3) |
Payments for other employee benefits liabilities | (5) |  | (6) |
Other | (15) |  | 1 |
Net cash flow provided by operating activities | 278 |  | 517 |
NET CASH FLOW USED FOR INVESTING ACTIVITIES |  |
Cash paid for property, plant, and equipment | (401) |  | (309) |
Proceeds from the sale of assets or affiliates | 62 |  | 12 |
Investment in subsidiaries and affiliates, net of cash acquired | — |  | (2,857) |
Other | (8) |  | — |
Net cash flow used for investing activities | (347) |  | (3,154) |
NET CASH FLOW (USED FOR) PROVIDED BY FINANCING ACTIVITIES |  |
Proceeds from long-term debt | — |  | 1,968 |
Payments on long-term debt | (29) |  | (473) |
Net proceeds from commercial paper notes | 420 |  | — |
Proceeds from senior revolving credit and receivables securitization facilities | 329 |  | 470 |
Payments on senior revolving credit and receivables securitization facilities | (329) |  | (315) |
Proceeds from term loan borrowing | — |  | 2,784 |
Payments on term loan borrowing | — |  | (2,800) |
Dividends paid | (118) |  | (104) |
Purchases of treasury stock | (363) |  | (185) |
Finance lease payments | (22) |  | (19) |
Other | — |  | (5) |
Net cash flow (used for) provided by financing activities | (112) |  | 1,321 |
Effect of exchange rate changes on cash | 85 |  | (33) |
Net decrease in cash, cash equivalents and restricted cash | (96) |  | (1,349) |
Cash, cash equivalents and restricted cash at beginning of period | 369 |  | 1,623 |
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD | $ | 273 |  | $ | 274 |
Cash, cash equivalents and restricted cash from continuing operations | $ | 238 |  | $ | 232 |
Cash and cash equivalents from discontinued operations | 35 |  | 42 |
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD | $ | 273 |  | $ | 274 |

The accompanying Notes to the Consolidated Financial Statements are an integral part of these Statements.
7

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(unaudited)
1. GENERAL
Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning, a Delaware corporation, and its subsidiaries.
The Consolidated Financial Statements included in this report are unaudited, pursuant to certain rules and regulations of the Securities and Exchange Commission (“SEC”), and include, in the opinion of the Company, normal recurring adjustments necessary for a fair statement of the results for the periods indicated, which, however, are not necessarily indicative of results which may be expected for the full year. The December 31, 2024 balance sheet data was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States (“U.S.”). In connection with the Consolidated Financial Statements and Notes included in this report, reference is made to the Consolidated Financial Statements and Notes contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (the “2024 Form 10-K”). Certain prior year amounts have been reclassified in order to conform to the current year presentation. On February 14, 2025, the Company announced the sale of its glass reinforcements ("GR") business. The transaction represented a strategic shift that has a major effect on the Company's operations and financial results and therefore, beginning with the quarterly report on Form 10-Q for the period ended March 31, 2025, and including this quarterly report on Form 10-Q for the period ended June 30, 2025, the glass reinforcements financial results are reflected in the Company’s consolidated financial statements as discontinued operations for all periods presented. Unless otherwise specified, these notes to the Consolidated Financial Statements reflect continuing operations. The Consolidated Statements of Cash Flows present cash flows from both continuing and discontinued operations. Please refer to Note 2 of the Consolidated Financial Statements for further information. Due to the reorganization of our reportable segments, prior period information has been recast to align with our new reportable segments. Please refer to Note 3 of the Consolidated Financial Statements for further information.
Acquisition of Masonite International Corporation
On May 15, 2024, the Company acquired all of the outstanding shares of Masonite International Corporation (“Masonite”) at a purchase price of $133.00 per share (the "Arrangement"). Masonite is a leading global designer, manufacturer, marketer and distributor of interior and exterior doors and door systems for residential new construction and residential repair and remodeling. The addition of Masonite's market-leading doors business creates a new growth platform for the Company, strengthening the Company's position in building and construction and expanding its offering of branded residential building products.
Masonite's operating results and purchase price allocation have been included in the Company's newly established Doors reportable segment from May 15, 2024, the effective date of the Arrangement, within the Consolidated Financial Statements. Please refer to Note 8 of the Consolidated Financial Statements for further information.
Revenue Recognition
As of December 31, 2024, our contract liability balances (for extended warranties, down payments and deposits, collectively) totaled $118 million, of which $17 million was recognized as revenue in the first six months of 2025. As of June 30, 2025, our contract liability balances totaled $123 million.
As of December 31, 2023, our contract liability balances totaled $101 million, of which $17 million was recognized as revenue in the first six months of 2024. As of June 30, 2024, our contract liability balances totaled $112 million.
Cash, Cash Equivalents and Restricted Cash
On the Consolidated Statements of Cash Flows, the total of Cash, cash equivalents and restricted cash includes restricted cash of $8 million as of June 30, 2025 and December 31, 2024. Restricted cash primarily represents amounts received from a counterparty related to its performance assurance on an executory contract. The amounts received from a counterparty are contractually required to be set aside, and the counterparty can exchange the cash for another form of performance assurance at its discretion. These amounts are included in Other current assets on the Consolidated Balance Sheets.
Accounts Receivable
Our customers consist mainly of distributors, home centers, contractors and retailers. Two of our largest customers accounted for 27% and 17%, respectively, of accounts receivable as of June 30, 2025.
8

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Related Party Transactions
In the first quarter of 2021, a related party relationship was established as a result of a member of the Company’s Board of Directors being named an executive officer of one of the Company’s preexisting suppliers. The related party transactions with this supplier consist of the purchase of raw materials. Purchases from the related party supplier were $23 million and $48 million for the three and six months ended June 30, 2025, respectively, and $33 million and $65 million for the three and six months ended June 30, 2024, respectively. As of June 30, 2025 and December 31, 2024, amounts due to the related party supplier were $7 million and $3 million, respectively.
Supplier Finance Programs
We review supplier terms and conditions on an ongoing basis, and have negotiated payment terms extensions in recent years in connection with our efforts to reduce working capital and improve cash flow. Separate from those terms extension actions, certain of our subsidiaries have entered into paying agency agreements with third-party administrators. These voluntary supply chain finance programs (collectively, the “Programs”) generally give participating suppliers the ability to sell, or otherwise pledge as collateral, their receivables from the Company to the participating financial institutions, at the sole discretion of both the suppliers and financial institutions. The Company is not a party to the arrangements between the suppliers and the financial institutions. The Company’s obligations to its suppliers, including amounts due and scheduled payment dates, are not impacted by the suppliers’ decisions to sell, or otherwise pledge as collateral, amounts under these arrangements. The Company’s payment terms to the financial institutions, including the timing and amount of payments, are based on the original supplier invoices. One of the Programs includes a parent guarantee to the participating financial institution for a certain U.S. subsidiary that, at the time of the respective program’s inception in 2015, was a guarantor subsidiary of the Company’s credit agreement.
The obligations are presented as Accounts payable within Total current liabilities on the Consolidated Balance Sheets and all activity related to the obligations is presented within operating activities on the Consolidated Statements of Cash Flow.
The Company’s confirmed outstanding obligations under the Programs totaled $184 million and $234 million as of June 30, 2025 and December 31, 2024, respectively. The amounts of invoices paid under the Programs totaled $309 million and $257 million for the six months ended June 30, 2025 and June 30, 2024, respectively.
Pension and Other Postretirement Benefits
The Company sponsors defined benefit pension plans. Under the plans, pension benefits are based on an employees’ years of service and, for certain categories of employees, qualifying compensation. Company contributions to these pension plans are determined by an independent actuary to meet or exceed minimum funding requirements.
The Company maintains healthcare and life insurance benefit plans for certain retired employees and their dependents. The health care plans in the United States are non-funded and pay either (1) stated percentages of covered medically necessary expenses, after subtracting payments by Medicare or other providers and after stated deductibles have been met, or (2) fixed amounts of medical expense reimbursement.
Accounting for pensions and other postretirement benefits involves estimating the cost of benefits to be provided well into the future and attributing that cost over the time period each employee works. To accomplish this, extensive use is made of assumptions about investment returns, discount rates, inflation, mortality, turnover and medical costs.
Accounting Policies
There have been no changes in the significant accounting policies from those that were disclosed in the 2024 Form 10-K.
9

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Accounting Pronouncements
The following table summarizes recent Accounting Standard Updates ("ASU") issued by the Financial Accounting Standards Board ("FASB") that could have an impact on the Company's Consolidated Financial Statements:

Standard | Description | Effective Date for Company | Effect on the Consolidated Financial Statements
ASU 2025-01 "Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40)" | The amendment in this update clarifies the effective date of update 2024-03, which is that public business entities are required to adopt the guidance in interim periods within annual reporting periods beginning after December 15, 2027. | January 1, 2028 | We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2024-03 "Income Statement – Reporting Comprehensive Income- Expense Disaggregation Disclosures (Subtopic 220-40)" | The amendments in this update require disclosure, in the notes to financial statements, of specified information about certain costs and expenses. | January 1, 2027 | We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.
ASU 2024-02 "Codification Improvements - Amendments to Remove References to the Concepts Statements" | Amendments in this update remove references to various FASB Concepts Statements. | January 1, 2025 | We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statements.
ASU 2024-01 "Compensation - Stock Compensation" (Topic 718): Scope Application of Profits Interest and Similar Awards" | This amendment adds an illustrative example to demonstrate how an entity should apply the scope guidance in paragraph 718-10-15-3 to determine whether profits interest and similar awards should be accounted for in accordance with Topic 718. | January 1, 2025 | We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statements.
ASU 2023-09 “Income Taxes (Topic 740): Improvements to Income Tax Disclosures” | This standard modifies the rate reconciliation and income taxes paid disclosures by requiring consistent categories and greater disaggregation of information in the rate reconciliation, as well as requiring income taxes paid to be disaggregated by jurisdiction. | January 1, 2025 | We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statement disclosures.
ASU 2023-07 “Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures” | The amendments in this update improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. | January 1, 2024 | We have adopted and determined that this guidance did not have a material effect on our Consolidated Financial Statement disclosures.
ASU 2023-06 “Disclosure Improvements” | The amendments in this update modify the disclosure or presentation requirements of a variety of Topics | The effective date for each topic is contingent on future SEC rule setting. | We are currently assessing the impact adopting this standard will have on our Consolidated Financial Statement disclosures. We do not believe the adoption of this guidance will have a material effect on our results of operations.

2. DISCONTINUED OPERATIONS
During the fourth quarter of 2024, the Company determined that certain asset groups should be tested for recoverability, primarily as a result of the progression of the strategic review of GR. Recoverability of the long-lived assets was measured by comparing the carrying amount of the asset groups to the future net undiscounted cash flows expected to be generated by the asset groups. Specifically for the GR asset group, the Company used an undiscounted cash flow model giving consideration to probability weighted cash flows of differing outcomes of the strategic review. The comparison indicated that one of the asset groups, the GR asset group, was not recoverable.
Fair value of the GR asset group was calculated using a discounted cash flow model and market information obtained through the strategic review to estimate the fair value of the asset group, with weighting applied. As a result of the analysis performed, the Company recorded pre-tax asset impairment charges for the amount by which the carrying value exceeded its fair value of $483 million for the year ended December 31, 2024, which was included in Impairment due to strategic review on the Consolidated Statements of Earnings within our 2024 Form 10-K. These charges include $439 million related to property, plant and equipment, $30 million related to operating lease right-of-use assets and $14 million related to definite-lived intangible assets.
10

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
On February 13, 2025, the Company entered into a definitive agreement ("GR Agreement") for the sale of GR for a purchase price of approximately $436 million, less costs to sell. As of June 30, 2025, the estimated purchase price was $515 million, net of cash, less costs to sell. The change since signing is due to the changes in customary and transaction-specific price adjustments which are subject to further changes through the date of the final closing adjustments. The purchase price is inclusive of $225 million of promissory notes to be issued to the Company by the purchasers. The GR business, historically part of the Company’s Composites segment, manufactures, fabricates, and sells glass fiber reinforcements for a wide variety of applications in wind energy, infrastructure, industrial, transportation and consumer markets.
The transaction represented a strategic shift that has a major effect on the Company's operations and financial results and therefore, beginning with the quarterly report on Form 10-Q for the period ended March 31, 2025, and including this quarterly report on Form 10-Q for the period ended June 30, 2025, GR’s financial results are reflected in the Company’s consolidated financial statements as discontinued operations for all periods presented.
As a result of classifying GR as a discontinued operation, a portion of the Goodwill from our former Composites reporting unit was allocated to the balance sheets of the discontinued operation. As of the date of classification of GR as a discontinued operation, the Company determined the amount of Goodwill to allocate based on the relative fair values of the discontinued operation and the former Composites reporting unit. This resulted in an allocation of $98 million of Goodwill to the discontinued operation.
After allocating Goodwill to the discontinued operation, as well as at the end of each subsequent quarter, the Company compared the carrying value of the discontinued operation to the fair value of the discontinued operation, defined as the sale price less estimated selling costs. During the three and six months ended June 30, 2025, the Company incurred a pre-tax loss on classification as discontinued operations of $19 million and $381 million, respectively. The loss is presented within Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax, on the Consolidated Statements of Earnings. An estimated valuation allowance of $354 million is recorded within Non-current assets of discontinued operations, on the Consolidated Balance Sheets.
The following table summarizes Earnings from discontinued operations attributable to Owens Corning, net of tax included within the Consolidated Statements of Earnings:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
NET SALES | $ | 306 |  | $ | 292 |  | $ | 576 |  | $ | 575 |
COST OF SALES | 230 |  | 238 |  | 434 |  | 469 |
OPERATING EXPENSES |  |  |  |
Marketing and administrative expenses | 18 |  | 20 |  | 35 |  | 42 |
Loss from classification as discontinued operation | 19 |  | — |  | 381 |  | — |
Other expense (income), net | 3 |  | (5) |  | 5 |  | (2) |
Total operating expenses | 40 |  | 15 |  | 421 |  | 40 |
Interest expense, net | 1 |  | 1 |  | 2 |  | 2 |
Income tax expense | 6 |  | 9 |  | 38 |  | 14 |
NET EARNINGS (LOSS) FROM DISCONTINUED OPERATIONS ATTRIBUTABLE TO OWENS CORNING, NET OF TAX | $ | 29 |  | $ | 29 |  | $ | (319) |  | $ | 50 |

11

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Major classes of assets and liabilities of discontinued operations include the following:

(In millions) | June 30, 2025 | December 31, 2024
ASSETS |  |
CURRENT ASSETS |  |
Cash and cash equivalents | $ | 35 |  | $ | 40 |
Receivables, less allowance | 118 |  | 104 |
Inventories | 248 |  | 260 |
Other current assets | 22 |  | 23 |
Current assets of discontinued operations | 423 |  | 427 |
Property, plant and equipment, net | 393 |  | 346 |
Goodwill | 101 |  | 98 |
Deferred income taxes | 5 |  | 46 |
Valuation allowance for discontinued operations | (354) |  | — |
Other non-current assets | 106 |  | 89 |
Non-current assets of discontinued operations | $ | 251 |  | $ | 579 |
LIABILITIES |  |
CURRENT LIABILITIES |  |
Accounts payable | $ | 105 |  | $ | 129 |
Other current liabilities | 77 |  | 97 |
Current liabilities of discontinued operations | 182 |  | 226 |
Other liabilities | 109 |  | 95 |
Non-current liabilities of discontinued operations | $ | 109 |  | $ | 95 |

Cash flows related to discontinued operations are included within the Consolidated Statements of Cash Flows. Selected financial information related to cash flows from discontinued operations are below:

| Six Months Ended June 30,
(In millions) | 2025 | 2024
Depreciation and amortization | $ | — |  | $ | 49 |
Cash paid for property, plant and equipment | $ | 43 |  | $ | 44 |

3. SEGMENT INFORMATION
Effective January 1, 2025, due to a strategic shift in how we manage our business as a result of the GR Agreement, we are presenting the GR business as a discontinued operation. We reorganized our reportable segments to align to our new operating and management structure. As a result, all prior period information was recast to reflect this change. The Company now has three reportable segments: Roofing, Insulation and Doors. The Company's vertically integrated glass non-wovens business that supports the Company’s Roofing business and other building products customers, along with its structural lumber business, were integrated into the Roofing business segment. Two glass melting plants, which make fiber for the non-wovens business, were integrated into the Insulation segment. Unless otherwise specified, the information in the note refers to only the continuing operations of the Company.
Operating segments are aggregated into reportable segments based on consideration of the following factors: similarity of economic characteristics, the nature of business activities, the management structure directly accountable to our chief operating decision maker ("CODM") for operating and administrative activities, availability of discrete financial information and information presented to the Board of Directors and investors. Accounting policies for the segments are the same as those for the Company. The Company’s three reportable segments are defined as follows:
12

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Roofing – Within our Roofing segment, the Company manufactures and sells residential roofing shingles, oxidized asphalt materials, roofing components and composite lumber primarily used in residential construction. Roofing also manufactures and sells glass mat and specialty veil materials used in building and construction applications.
Insulation – Within our Insulation segment, the Company manufactures and sells thermal and acoustical batts, loose fill insulation, spray foam insulation, wet used chopped strand, foam sheathing and accessories. It also manufactures and sells glass fiber pipe insulation, energy efficient flexible duct media, bonded and granulated stone wool insulation, cellular glass insulation, and foam insulation used in above- and below-grade construction applications.
Doors – Within our Doors segment, the Company manufactures and sells interior and exterior doors and door systems primarily used in residential construction.
NET SALES
The following tables show a disaggregation of our Net sales by segment and geographic region. Corporate eliminations (shown below) largely reflect intercompany sales from Insulation to Roofing. External customer sales are attributed to geographic region based upon the location from which the product is sold to the external customer.

| Three Months Ended June 30, 2025
(In millions) | Roofing | Insulation | Doors | Subtotal | Eliminations | Consolidated
Disaggregation Categories |  |  |  |  |  |
North America Residential | $ | 1,128 |  | $ | 346 |  | $ | 489 |  | $ | 1,963 |  | $ | (40) |  | $ | 1,923 |
North America Non-Residential | 118 |  | 373 |  | — |  | 491 |  | (3) |  | 488 |
Total North America | 1,246 |  | 719 |  | 489 |  | 2,454 |  | (43) |  | 2,411 |
Europe | 55 |  | 180 |  | 58 |  | 293 |  | (1) |  | 292 |
Asia-Pacific | 2 |  | 31 |  | 3 |  | 36 |  | — |  | 36 |
Rest of world | — |  | 4 |  | 4 |  | 8 |  | — |  | 8 |
NET SALES | $ | 1,303 |  | $ | 934 |  | $ | 554 |  | $ | 2,791 |  | $ | (44) |  | $ | 2,747 |

| Three Months Ended June 30, 2024
(In millions) | Roofing | Insulation | Doors | Subtotal | Eliminations | Consolidated
Disaggregation Categories |  |  |  |  |  |
North America Residential | $ | 1,088 |  | $ | 383 |  | $ | 277 |  | $ | 1,748 |  | $ | (37) |  | $ | 1,711 |
North America Non-Residential | 112 |  | 367 |  | — |  | 479 |  | (3) |  | 476 |
Total North America | 1,200 |  | 750 |  | 277 |  | 2,227 |  | (40) |  | 2,187 |
Europe | 49 |  | 184 |  | 30 |  | 263 |  | — |  | 263 |
Asia-Pacific | 3 |  | 37 |  | 1 |  | 41 |  | — |  | 41 |
Rest of world | — |  | 3 |  | 3 |  | 6 |  | — |  | 6 |
NET SALES | $ | 1,252 |  | $ | 974 |  | $ | 311 |  | $ | 2,537 |  | $ | (40) |  | $ | 2,497 |

13

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)

| Six Months Ended June 30, 2025
(In millions) | Roofing | Insulation | Doors | Subtotal | Eliminations | Consolidated
Disaggregation Categories |  |  |  |  |  |
North America Residential | $ | 2,096 |  | $ | 728 |  | $ | 968 |  | $ | 3,792 |  | $ | (75) |  | $ | 3,717 |
North America Non-Residential | 218 |  | 705 |  | — |  | 923 |  | (5) |  | 918 |
Total North America | 2,314 |  | 1,433 |  | 968 |  | 4,715 |  | (80) |  | 4,635 |
Europe | 103 |  | 346 |  | 114 |  | 563 |  | (3) |  | 560 |
Asia-Pacific | 6 |  | 56 |  | 3 |  | 65 |  | — |  | 65 |
Rest of world | — |  | 8 |  | 9 |  | 17 |  | — |  | 17 |
NET SALES | $ | 2,423 |  | $ | 1,843 |  | $ | 1,094 |  | $ | 5,360 |  | $ | (83) |  | $ | 5,277 |

| Six Months Ended June 30, 2024
(In millions) | Roofing | Insulation | Doors | Subtotal | Eliminations | Consolidated
Disaggregation Categories |  |  |  |  |  |
North America Residential | $ | 2,048 |  | $ | 781 |  | $ | 277 |  | $ | 3,106 |  | $ | (70) |  | $ | 3,036 |
North America Non-Residential | 198 |  | 718 |  | — |  | 916 |  | (7) |  | 909 |
Total North America | 2,246 |  | 1,499 |  | 277 |  | 4,022 |  | (77) |  | 3,945 |
Europe | 98 |  | 359 |  | 30 |  | 487 |  | (1) |  | 486 |
Asia-Pacific | 6 |  | 65 |  | 1 |  | 72 |  | — |  | 72 |
Rest of world | — |  | 8 |  | 3 |  | 11 |  | — |  | 11 |
NET SALES | $ | 2,350 |  | $ | 1,931 |  | $ | 311 |  | $ | 4,592 |  | $ | (78) |  | $ | 4,514 |

EARNINGS BEFORE INTEREST, TAXES, DEPRECIATION AND AMORTIZATION
Effective January 1, 2025, we changed our segment measure of profitability for our reportable segments from Earnings before interest and taxes ("EBIT") to Earnings before interest, taxes, depreciation and amortization (“EBITDA”), as the measure used for purposes of making decisions about allocating resources to the segments and assessing performance. Segment EBITDA is the principal measure used by the CODM to assess segment performance and make decisions on the allocation of resources. Prior period amounts have been recast to reflect the new segment measure for profitability.
The Company identifies the Chief Executive Officer as the CODM. In applying the criteria set forth in the standards for reporting information about segments in financial statements, we have determined that we have three reportable segments – Roofing, Insulation, and Doors. The key factors used to identify these reportable segments are the organization and alignment of our internal operations and the nature of our products. The CODM uses EBITDA for each reportable segment to assess segment performance and make decisions on the allocation of resources. Segment EBITDA targets are established on an annual basis and used by the CODM throughout the year to compare with actual results. Quarterly forecasts supplement annual targets and provide incremental information utilized to assess the performance of a segment. Segment EBITDA variance analysis further provides insight into segment operational cost optimization.
The Company does not regularly provide significant segment expense detail to the CODM. EBITDA by segment consists of net sales less related costs and expenses, which are mainly comprised of cost of sales and marketing and administrative costs. EBITDA is presented on a basis that is used internally for evaluating segment performance. Certain items, such as general corporate expenses or income and certain other expense or income items, are excluded from the internal evaluation of segment performance. Accordingly, these items are not reflected in EBITDA for our reportable segments and are included within Corporate, Other and Eliminations.
14

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
The following table summarizes EBITDA by segment:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Reportable Segments |  |  |  |
Roofing | $ | 457 |  | $ | 437 |  | $ | 789 |  | $ | 775 |
Insulation | 225 |  | 246 |  | 450 |  | 469 |
Doors | 75 |  | 61 |  | 143 |  | 61 |
Total reportable segments | 757 |  | 744 |  | 1,382 |  | 1,305 |
Restructuring excluding depreciation | (9) |  | (34) |  | (12) |  | (44) |
Gains on sale of certain precious metals | 12 |  | — |  | 21 |  | — |
Paroc marine recall | (1) |  | (6) |  | (2) |  | (7) |
Strategic review-related charges | — |  | (15) |  | — |  | (17) |
Acquisition-related transaction costs | — |  | (29) |  | — |  | (47) |
Loss on Assets Held for Sale | (24) |  | — |  | (26) |  | — |
Acquisition-related integration costs excluding amortization | (4) |  | (21) |  | (6) |  | (21) |
Recognition of acquisition inventory fair value step-up | — |  | (12) |  | — |  | (12) |
General corporate expense and other | (54) |  | (66) |  | (114) |  | (112) |
Total corporate, other and eliminations | (80) |  | (183) |  | (139) |  | (260) |
Depreciation and amortization | (172) |  | (142) |  | (331) |  | (250) |
Interest expense, net | (63) |  | (63) |  | (127) |  | (79) |
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES | $ | 442 |  | $ | 356 |  | $ | 785 |  | $ | 716 |

TOTAL ASSETS AND PROPERTY, PLANT AND EQUIPMENT
The following table summarizes total assets by segment:

(In millions) | June 30, 2025 |  | December 31, 2024
Assets allocated to reportable segments |  |  |
Roofing | $ | 3,643 |  |  | $ | 3,107 |
Insulation | 4,514 |  |  | 4,231 |
Doors | 4,433 |  |  | 4,454 |
Total assets allocated to reportable segments | 12,590 |  |  | 11,792 |
Assets not allocated to reportable segments |  |  |
Cash and cash equivalents | 230 |  |  | 321 |
Non-current deferred income taxes | 8 |  |  | 8 |
Investments in affiliates | 60 |  |  | 86 |
Corporate property, plant and equipment, other assets and eliminations | 921 |  |  | 862 |
TOTAL ASSETS FROM CONTINUING OPERATIONS | $ | 13,809 |  |  | $ | 13,069 |

15

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
The following table summarizes total property, plant and equipment, net by geographic region:

(In millions) | June 30, 2025 |  | December 31, 2024
North America | $ | 3,247 |  |  | $ | 3,182 |
Europe | 599 |  |  | 524 |
Asia Pacific | 64 |  |  | 67 |
Rest of world | 42 |  |  | 45 |
PROPERTY, PLANT AND EQUIPMENT, NET FROM CONTINUING OPERATIONS | $ | 3,952 |  |  | $ | 3,818 |

ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT
The following table summarizes cash paid for property, plant and equipment by segment:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Reportable Segments |  |  |  |
Roofing | $ | 66 |  | 51 | $ | 128 |  | $ | 105 |
Insulation | 80 |  | 55 | 161 |  | 116 |
Doors | 23 |  | 15 | 41 |  | 15 |
Total reportable segments | $ | 169 |  | $ | 121 |  | $ | 330 |  | $ | 236 |
General corporate additions | 7 |  | 11 | 28 |  | 29 |
ADDITIONS TO PROPERTY, PLANT AND EQUIPMENT FROM CONTINUING OPERATIONS | $ | 176 |  | $ | 132 |  | $ | 358 |  | $ | 265 |

4. INVENTORIES
Inventories consist of the following:

(In millions) | June 30, 2025 | December 31, 2024
Finished goods | $ | 736 |  | $ | 664 |
Materials and supplies | 723 |  | 663 |
Total inventories | $ | 1,459 |  | $ | 1,327 |

5. DERIVATIVE FINANCIAL INSTRUMENTS
The Company is exposed to, among other risks, the impact of changes in commodity prices, foreign currency exchange rates, and interest rates in the normal course of business. The Company’s risk management program is designed to manage the exposure and volatility arising from these risks, and utilizes derivative financial instruments to offset a portion of these risks. The Company uses derivative financial instruments only to the extent necessary to hedge identified business risks, and does not enter into such transactions for trading purposes.
The Company generally does not require collateral or other security with counterparties to these financial instruments and is therefore subject to credit risk in the event of nonperformance; however, the Company monitors credit risk and currently does not anticipate nonperformance by other parties. Contracts with counterparties generally contain right of offset provisions. These provisions effectively reduce the Company’s exposure to credit risk in situations where the Company has gain and loss positions outstanding with a single counterparty. It is the Company’s policy to offset on the Consolidated Balance Sheets the amounts recognized for derivative instruments with any cash collateral arising from derivative instruments executed with the same counterparty under a master netting agreement. As of June 30, 2025 and December 31, 2024, the Company did not have any amounts on deposit with any of its counterparties, nor did any of its counterparties have any amounts on deposit with the Company.
16

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Derivative Fair Values
Our derivatives consist of natural gas forward swaps, foreign exchange forward contracts and U.S. treasury rate lock agreements, all of which are over-the-counter and not traded through an exchange. The Company uses widely accepted valuation tools to determine fair value, such as discounting cash flows to calculate a present value for the derivatives. The models use Level 2 inputs, such as forward curves and other commonly quoted observable transactions and prices, which are observable market-based inputs or unobservable inputs that are corroborated by market data. The fair value of our derivatives and hedging instruments are all classified as Level 2 investments within the three-tier hierarchy.
The following table presents the fair value of derivatives and hedging instruments and their respective location on the Consolidated Balance Sheets:

|  |  | Fair Value at
(In millions) | Location |  | June 30, 2025 |  | December 31, 2024
Derivative assets designated as hedging instruments: |  |  |  |  |
Cash flow hedges: |  |  |  |  |
Natural gas forward swaps for continuing operations | Other current assets |  | $ | 1 |  |  | $ | 3 |
Natural gas forward swaps for discontinued operations | Other current assets of discontinued operations |  | $ | — |  |  | $ | 1 |
Derivative liabilities designated as hedging instruments: |  |  |  |  |
Cash flow hedges: |  |  |  |  |
Natural gas forward swaps for continuing operations | Other current liabilities |  | $ | 2 |  |  | $ | 1 |
Natural gas forward swaps for discontinued operations | Other current liabilities of discontinued operations |  | $ | — |  |  | $ | — |
Derivative assets not designated as hedging instruments: |  |  |  |  |
Foreign exchange forward contracts for discontinued operations | Other current assets of discontinued operations |  | $ | — |  |  | $ | 1 |
Derivative liabilities not designated as hedging instruments: |  |  |  |  |
Foreign exchange forward contracts for continuing operations | Other current liabilities |  | $ | — |  |  | $ | 1 |
Foreign exchange forward contracts for discontinued operations | Other current liabilities of discontinued operations |  | $ | 1 |  |  | $ | 1 |

17

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Consolidated Statements of Earnings Activity
The following table presents the impact and respective location of derivative activities on the Consolidated Statements of Earnings:

|  | Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | Location | 2025 | 2024 | 2025 | 2024
Derivative activity designated as hedging instruments: |  |  |  |  |
Natural gas cash flow hedges: |  |  |  |  |
Amount of loss (gain) reclassified from AOCI (as defined below) into earnings (a) | Cost of sales | $ | — |  | $ | 3 |  | $ | (1) |  | $ | 9 |
Amount of loss reclassified from AOCI (as defined below) into earnings (a) | Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax | $ | — |  | $ | 1 |  | $ | — |  | $ | 4 |
Treasury interest rate lock: |  |  |  |  |
Amount of gain reclassified from AOCI (as defined below) into earnings (a) | Interest expense, net | $ | (1) |  | $ | — |  | $ | (2) |  | $ | — |
Derivative activity not designated as hedging instruments: |  |  |  |  |
Foreign currency: |  |  |  |  |
Amount of gain recognized in earnings (b) | Other expense, net | $ | — |  | $ | — |  | $ | (1) |  | $ | (1) |
Amount of loss (gain) recognized in earnings (c) | Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax | $ | 3 |  | $ | (3) |  | $ | 5 |  | $ | (3) |

(a)Accumulated Other Comprehensive Earnings (Deficit) (“AOCI”)
(b)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Other expense, net. Please refer to the “Other Derivatives” section below for additional detail.
(c)(Gains)/losses related to foreign currency derivatives were substantially offset by net revaluation impacts on foreign currency denominated balance sheet exposures, which were also recorded in Net (loss) earnings from discontinued operations attributable to Owens Corning, net of tax. Please refer to the “Other Derivatives” section below for additional detail.
Consolidated Statements of Comprehensive Earnings Activity
The following table presents the impact of derivative activities on the Consolidated Statements of Comprehensive Earnings:

|  | Amount of Gain (Loss) Recognized in Comprehensive Earnings
(In millions) |  | Three Months Ended June 30, | Six Months Ended June 30,
Hedging Type | Derivative Financial Instrument | 2025 | 2024 | 2025 | 2024
Cash flow hedge | Natural gas forward swaps | $ | (7) |  | $ | 6 |  | $ | (5) |  | $ | 12 |

18

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Cash Flow Hedges
The Company uses a combination of derivative financial instruments, which qualify as cash flow hedges, and physical contracts to manage forecasted exposure to electricity and natural gas prices. As of June 30, 2025, the notional amounts of these natural gas forward swaps for both continuing and discontinued operations were 6 million MMBtu (or MMBtu equivalent) based on U.S. and European indices. The Company has designated these natural gas forward swaps as cash flow hedges, with the last hedge maturing no later than June 2026. A net unrecognized loss of $1 million related to these natural gas forward swaps was included in AOCI as of June 30, 2025, $1 million of which is expected to be reclassified into earnings within the next twelve months.
In 2020, the Company entered into a $175 million forward U.S. Treasury rate lock agreement to manage the U.S. Treasury portion of its interest rate risk associated with the anticipated issuance of certain 10-year fixed rate senior notes. The Company designated this forward U.S. Treasury rate lock agreement, which expired on December 15, 2022, as a cash flow hedge. The locked fixed rate of this agreement was 0.994%. In September 2022, a gain of $6 million was recognized as a result of a change in the forecasted issuance of certain senior notes. In December 2022, the Company received cash of $37 million upon the settlement of the rate lock agreement, of which $31 million will be amortized as a component of interest expense upon the future issuance of senior notes. In May 2024, the Company issued new senior notes and began amortizing the $31 million over the life of the Company's 5.700% senior notes due 2034, of which $1 million was recognized during the six months ended June 30, 2025. The unrecognized gain of $28 million was included in AOCI as of June 30, 2025.
Other Derivatives
The Company uses forward currency exchange contracts to manage existing exposures to foreign exchange risk related to assets and liabilities recorded on the Consolidated Balance Sheets. As of June 30, 2025, the Company had notional amounts for continuing and discontinued operations of $147 million for non-designated derivative financial instruments related to foreign currency exposures in U.S. Dollars primarily related to the Indian Rupee, Brazilian Real, Hong Kong Dollar, Korean Won and the Chinese Yuan. In addition, the Company had notional amounts for continuing operations of $119 million for non-designated derivative financial instruments related to foreign currency exposures in European Euro primarily related to the Polish Złoty, Danish Krone, Norwegian Krone and the U.S. Dollar.
6. GOODWILL AND OTHER INTANGIBLE ASSETS
The Company tests goodwill and indefinite-lived intangible assets for impairment during the fourth quarter of each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of a reporting unit below its carrying value.
Goodwill
The changes in the net carrying value of goodwill by segment are as follows:

(In millions) | Roofing |  | Insulation |  | Doors |  | Total
Gross carrying amount at December 31, 2024 | $ | 654 |  |  | $ | 1,549 |  |  | $ | 1,478 |  |  | $ | 3,681 |
Foreign currency translation | 7 |  |  | 69 |  |  | 15 |  |  | 91 |
Purchase price allocation adjustments | — |  |  | — |  |  | 23 |  |  | 23 |
Gross carrying amount at June 30, 2025 | 661 |  |  | 1,618 |  |  | 1,516 |  |  | 3,795 |
Accumulated impairment losses at December 31, 2024 | — |  |  | (936) |  |  | — |  |  | (936) |
Foreign currency translation | — |  |  | (45) |  |  | — |  |  | (45) |
Accumulated impairment losses at June 30, 2025 | — |  |  | (981) |  |  | — |  |  | (981) |
Balance, net of impairment, at June 30, 2025 | $ | 661 |  |  | $ | 637 |  |  | $ | 1,516 |  |  | $ | 2,814 |

19

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
First Quarter Goodwill Triggering Event
During the first quarter of 2025, our internal reporting and management structure changed, resulting in the identification of three new reportable segments: Roofing, Insulation and Doors. As a result of our segment reorganization, we reassigned the former Composites reportable segment assets and liabilities into the Roofing and Insulation reportable segments. As this change was considered a goodwill triggering event, we performed an interim goodwill impairment test both prior and subsequent to the reorganization using a discounted cash flow approach for each of the respective reporting units.
Prior to reorganizing the reportable segments, and integrating portions of the former Composites reportable segment, but after allocating Goodwill to discontinued operations, the Company tested the Goodwill for the Roofing, Insulation and Composites reporting units. As a result of this test, we determined that no impairment existed for any of the reporting units and that the business enterprise value for the Roofing, Composites and Insulation reporting units substantially exceeded their carrying values. The remaining Composites Goodwill, after the allocation of Goodwill to discontinued operations, of $325 million was allocated between the Roofing and Insulation reporting units based on the relative fair values of the portions of the Composites business, which were integrated based on the discounted cash flows of each.
Subsequent to allocating Goodwill to the Roofing and Insulation reporting units, as part of reorganization, the Company tested the Goodwill for the Roofing and Insulation reporting units. As a result of this test, we determined that no impairment existed for either reporting unit and that the business enterprise value for the Roofing and Insulation reporting units substantially exceeded their carrying values as of the date of our assessment.
Second Quarter Goodwill Triggering Event
In the second quarter of 2025, the Company performed its ongoing assessment to consider whether events or circumstances had occurred that could more likely than not reduce the fair value of the Doors reporting unit below its carrying value. The narrow cushion on the Doors reporting unit, due to its recent acquisition, and the high level of near-term macroeconomic uncertainty caused by recently announced tariffs, triggered the Company to perform an interim goodwill impairment test as of June 30, 2025 for the Doors reporting unit. The fair value of the reporting unit was determined based on a discounted cash flow analysis, or income approach, as well as a market approach, based on market multiples of comparable companies.
As a result of this test, we determined that no impairment existed for the Doors reporting unit as the fair value exceeded the carrying value by approximately 5%. Changes in assumptions or estimates used in our goodwill impairment testing could materially affect the determination of the fair value of the reporting unit. Additional tariffs or trade restrictions that the Company is unable to offset, negative impacts from tariffs on demand, or further declines in the macroeconomic outlook could result in declines in revenues and margins necessitating the need for impairment assessments in future periods. The most significant assumptions used in the fair value analysis were base year revenue, revenue growth rate, adjusted EBITDA margins, discount rate and market multiples under the market approach.
Other Intangible Assets
Other intangible assets consist of the following:

| June 30, 2025 |  | December 31, 2024
(In millions) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Indefinite-lived trademarks and trade names | $ | 1,238 |  |  | $ | — |  |  | $ | 1,238 |  |  | $ | 1,225 |  |  | $ | — |  |  | $ | 1,225 |
Amortizable intangible assets |  |  |  |  |  |  |  |  |  |  |
Customer relationships | 1,609 |  |  | (437) |  |  | 1,172 |  |  | 1,570 |  |  | (367) |  |  | 1,203 |
Technology | 385 |  |  | (224) |  |  | 161 |  |  | 373 |  |  | (199) |  |  | 174 |
Trademarks and trade names | 31 |  |  | (5) |  |  | 26 |  |  | 31 |  |  | (4) |  |  | 27 |
Other (a) | 68 |  |  | (1) |  |  | 67 |  |  | 52 |  |  | (1) |  |  | 51 |
Total other intangible assets | $ | 3,331 |  |  | $ | (667) |  |  | $ | 2,664 |  |  | $ | 3,251 |  |  | $ | (571) |  |  | $ | 2,680 |

(a) Other primarily includes emissions rights.
20

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Indefinite-Lived Intangible Assets
There is one indefinite-lived intangible asset that is at an increased risk of impairment, which is used by our Insulation segment and was partially impaired in the fourth quarter of 2022. A change in the estimated long-term revenue growth rate or discount rate for the segment could increase the likelihood of a future impairment. The following table presents the carrying values of these assets as of June 30, 2025:

(In millions) | June 30, 2025
European building and technical insulation trade name | $ | 96 |

Definite-Lived Intangible Assets
The Company amortizes the cost of other intangible assets over their estimated useful lives which, individually, range up to 25 years. The Company’s future cash flows are not materially impacted by its ability to extend or renew agreements related to its amortizable intangible assets.
Amortization expense for intangible assets for the three and six months ended June 30, 2025 was $39 million and $77 million, respectively. Amortization expense for intangible assets for the three and six months ended June 30, 2024 was $39 million and $55 million, respectively. Amortization expense for intangible assets is estimated to be $72 million for the remainder of 2025.
The estimated amortization expense for intangible assets for the next five fiscal years ended December 31 is as follows:

(In millions) | Amortization
2026 | $ | 135 |
2027 | $ | 126 |
2028 | $ | 126 |
2029 | $ | 111 |
2030 | $ | 102 |

7. PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consist of the following:

(In millions) | June 30, 2025 | December 31, 2024
Land | $ | 186 |  | $ | 178 |
Buildings and leasehold improvements | 1,354 |  | 1,238 |
Machinery and equipment | 5,141 |  | 4,876 |
Construction in progress | 550 |  | 564 |
Property, plant and equipment, gross | 7,231 |  | 6,856 |
Accumulated depreciation | (3,279) |  | (3,038) |
Property, plant and equipment, net | $ | 3,952 |  | $ | 3,818 |

Machinery and equipment include certain precious metals used in our production tooling, which comprise approximately 4% of total machinery and equipment as of June 30, 2025 and December 31, 2024. Precious metals used in our production tooling are depleted as they are consumed during the production process, depletion expense is included in Cost of Sales on the Company's Consolidated Statements of Earnings.
Our production tooling needs are changing due to the announced sale of our GR business. As a result, the Company sold certain precious metals resulting in gains of $1 million and $10 million for the three and six months ended June 30, 2025, respectively. These gains are included in Other expense, net on the Consolidated Statements of Earnings and are reflected in the Corporate, Other and Eliminations reporting category. The cash proceeds from the sales are included in Net cash flow used for investing activities in the Consolidated Statements of Cash Flow.
21

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
We also exchanged certain precious metals used in production tooling for certain other precious metals to be used in production tooling. During the three and six months ended June 30, 2025, these non-cash exchanges resulted in a net increase to Machinery and equipment of $11 million and gains totaling $11 million. These gains are included in Other expense, net on the Consolidated Statements of Earnings and are reflected in the Corporate, Other and Eliminations reporting category.
8. ACQUISITIONS
On February 8, 2024, the Company entered into an Arrangement Agreement (the "Arrangement Agreement") with Masonite International Corporation, a British Columbia corporation ("Masonite"), pursuant to which the Company agreed to acquire all of the issued and outstanding common shares of Masonite at a purchase price of $133.00 per share (the "Arrangement"). On May 15, 2024, as determined by the Arrangement Agreement, the Company completed the acquisition of 100% of the issued and outstanding shares of Masonite for $133.00 per share in cash, without interest for a total purchase price of $3.2 billion. The acquisition was funded primarily with debt proceeds of $2.8 billion and cash on hand. Please refer to the discussion under "364-Day Credit Facility" in Note 12 of the Consolidated Financial Statements for further information.
Masonite is a leading global designer, manufacturer, marketer and distributor of interior and exterior doors and door systems for the residential new construction and residential repair and remodeling markets. The addition of Masonite's market-leading doors business creates a new growth platform for the Company, strengthening the Company's position in building and construction and expanding its offering of branded residential building products.
Masonite's operating results and purchase price allocation have been included in the Company's newly established Doors reportable segment from May 15, 2024, the effective date of the Arrangement, within the Consolidated Financial Statements. Doors contributed revenues of $1,094 million and earnings of $23 million to the Company for the six months ended June 30, 2025. During the six months ended June 30, 2024 Doors contributed revenues of $311 million and earnings of $25 million. Please refer to Note 3 of the Consolidated Financial Statements for further information.
During the three and six months ended June 30, 2025, the Company incurred no transaction costs. During the three and six months ended June 30, 2024, the Company incurred $29 million and $47 million of transaction costs, respectively. During the three and six months ended June 30, 2025, the Company incurred $4 million and $6 million of integration costs, respectively, related to its acquisition of Masonite. During the three and six months ended June 30, 2024, the company incurred $21 million of integration costs related to its acquisition of Masonite. These expenses are included in Other expense, net on the Company's Consolidated Statements of Earnings.
The fair value of the total purchase consideration transferred was determined as follows:

(In millions) | Fair Value of Purchase Consideration
Closing cash consideration | $ | 2,935 |
Pre-combination vesting portion of fair value of Masonite outstanding equity awards converted to Owens Corning time vesting RSUs | 35 |
Repayment of Masonite term loan facility | 216 |
Total transaction consideration | $ | 3,186 |

22

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
The closing cash as part of consideration was calculated at the price of $133.00 per outstanding Masonite common share. At the close of the acquisition of Masonite, there were 22.07 million Masonite common shares outstanding. The fair value of Owens Corning common stock underlying Masonite outstanding equity awards that have been converted into awards with respect to Owens Corning common stock is calculated as follows:

(In millions, except share and per share amounts) | Amount
Number of Masonite stock awards outstanding (a) | 639,608 |
Exchange ratio (b) | 0.7642
Owens Corning equity awards issued for Masonite outstanding equity awards | 488,778 |
10-day weighted average closing share price of Owens Corning common stock (c) | $ | 174.03 |
Fair value of Owens Corning time vesting RSUs issued for Masonite outstanding equity awards | $ | 85 |
Less: Fair value allocated to post-transaction compensation expense | (50) |
Fair value of awards included in transaction consideration | $ | 35 |

(a) Represents the Masonite stock awards that have been converted into Owens Corning equity awards upon completion of the acquisition of Masonite, based on awards outstanding at May 15, 2024. Masonite equity awards include awards issued under various stock incentive plans of Masonite.
(b) The exchange rate was determined by the consideration amount divided by the volume weighted average closing sale price of one share of Owens Corning common stock for the ten consecutive trading days ended May 15, 2024, in accordance with the terms of the Arrangement Agreement.
(c) The ten-day weighted average closing share price was calculated for the ten consecutive trading days ended May 15, 2024, in accordance with the terms of the Arrangement Agreement.
On May 15, 2024, the effective date of the Arrangement, the Company transferred consideration to Masonite to repay the Masonite 2027 term loan facility (the "Masonite term loan facility"). This repayment was required by the change in control provision within the terms of the Masonite term loan facility.
The Company has applied the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") Topic 805, Business Combinations, and recognized assets acquired and liabilities assumed at their fair values as of the effective date of the Arrangement, with the excess purchase consideration recorded to goodwill. The Company continued to obtain information to complete its valuation of certain assets and liabilities, during the twelve month period subsequent to the close of the transaction. During this time, the Company recorded measurement period adjustments to the purchase price allocation. The Company has finalized the valuation of the assets acquired and liabilities assumed as of May 15, 2025.
23

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
The following table summarizes the acquisition date fair value net of measurement period adjustments of net tangible and intangible assets acquired, net of liabilities assumed as part of the Arrangement:

(In millions) | As originally reported | Measurement period adjustments | As adjusted
Cash and cash equivalents | $ | 282 |  | $ | — |  | $ | 282 |
Receivables, net | 330 |  | — |  | 330 |
Inventories | 379 |  | (2) |  | 377 |
Other current assets | 82 |  | (4) |  | 78 |
Property, plant and equipment, net | 861 |  | (3) |  | 858 |
Operating lease right-of-use assets | 253 |  | — |  | 253 |
Intangible assets | 1,579 |  | (221) |  | 1,358 |
Deferred income taxes | 14 |  | — |  | 14 |
Other non-current assets | 91 |  | — |  | 91 |
Total assets | 3,871 |  | (230) |  | 3,641 |
Accounts payable | 196 |  | — |  | 196 |
Current operating lease liabilities | 28 |  | — |  | 28 |
Other current liabilities | 187 |  | 6 |  | 193 |
Long-term debt | 867 |  | — |  | 867 |
Non-current operating lease liabilities | 235 |  | — |  | 235 |
Deferred income taxes | 413 |  | (43) |  | 370 |
Other non-current liabilities | 32 |  | 13 |  | 45 |
Net assets acquired | 1,913 |  | (206) |  | 1,707 |
Non-controlling interest | (35) |  | — |  | (35) |
Goodwill | 1,308 |  | 206 |  | 1,514 |
Total net assets acquired | $ | 3,186 |  | $ | — |  | $ | 3,186 |

The details on the methodology and significant inputs used for fair value of valuation are outlined below.
Goodwill
The purchase consideration allocation resulted in $1.5 billion of goodwill. During the preliminary period, the Company increased the value of goodwill by $206 million. The goodwill is not deductible for tax purposes. The factors contributing to the recognition of the amount of goodwill are based on several strategic and synergistic benefits that are expected to be realized from the acquisition.
Receivables
The fair value of receivables acquired is $330 million, with the gross contractual amount being $331 million. The Company expects $1 million to be uncollectible.
Inventory
The fair value of inventory was determined by the market selling price of the inventory, less the remaining manufacturing and selling costs and a normal profit margin on those manufacturing and selling efforts. The fair value of inventory has been stepped up by $18 million, this amount has been fully amortized to Cost of Sales as the inventory was sold.
Property, Plant and Equipment
The fair value of property, plant and equipment is $858 million and was determined using cost and market approaches. The cost approach reflects the amount that would be required to replace the asset to service capacity, this approach was used where there was historical data available. Where there was not historical data available the market approach was used, this approach reflects recent sales of identical or comparable assets.
24

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Intangible Assets
The fair value of acquired intangible assets is $1.4 billion. During the preliminary period, the Company reduced the value of acquired intangibles by $221 million, as we continued to obtain information used to determine the fair value. There were no material impacts to the Consolidated Statements of Earnings as a result of this adjustment. The fair value of customer relationships was determined using the multi-period excess earnings method. Key assumptions under this method are the revenue growth rate, adjusted EBITDA margin (including the adjusted terminal EBITDA margin), customer attrition rate, discount rate, tax rate and contributory asset charges. The fair value of trade names were determined using the relief from royalty method. Key assumptions under this method are future cash flow estimates, royalty rate and discount rate.

(In millions, except useful life amounts) |  | Estimated Useful Life (in years) |  | Estimated Asset Fair Value
Customer relationships |  | 10 - 21 |  | $ | 979 |
Technology |  | 5 |  | 120 |
Trademarks and trade names (indefinite-lived) |  | Indefinite |  | 240 |
Trademarks and trade names |  | 10 |  | 19 |
Identifiable intangible assets, net |  |  |  | $ | 1,358 |

Debt
The fair value of Masonite's unsecured senior notes was determined using the market approach, based on the trading value of the notes in the market.
Joint Ventures and Noncontrolling Interests
The Company's acquisition of Masonite included joint ventures with Dominance Industries, Inc., 45% owned, and Vanair Design Inc., 30% owned. As a result of the Masonite acquisition, we also recognized a 25% noncontrolling interest in Sacopan Inc. for the portion owned by a third party and a 50% non-controlling interest in Magna Foremost SDN BHD for the portion owned by a third party. The value of these investments and non-controlling interests were determined using an equally weighted value from the income approach and the market approach.
Pro Forma Financial Information from Continuing Operations
The following table summarizes, on an unaudited pro forma basis, the combined results of operations from continuing operations of the Company for the three and six months ended June 30, 2024, assuming the acquisition had occurred on January 1, 2023.

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2024 | 2024
Pro Forma net sales from continuing operations | $ | 2,807 |  | $ | 5,414 |
Pro Forma net earnings from continuing operations attributable to Owens Corning | $ | 308 |  | $ | 631 |

The pro forma financial information includes certain adjustments to adhere to the Company's accounting policies and adjustments to the historical results with pro forma adjustments, net of tax, that assume the acquisition occurred on January 1, 2023. This includes removing the results of the Architectural segment that was sold by Masonite prior to the close of the Arrangement, increased depreciation expense to reflect the fair value of property, plant and equipment, and increased amortization expense related to the fair value of identifiable amortizable intangible assets. In addition, adjustments were made to reflect the interest, discount amortization, and capitalized financing cost amortization for the 2027, 2034 and 2054 senior notes that were issued to pay off the 364-Day Credit Facility in the comparative pro forma period, see Note 12 for further detail. Finally, adjustments were made to remove interest expense for the pro forma period related to the Masonite term loan facility that was paid off at closing as part of the consideration for the Arrangement.
25

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Significant adjustments to the pro forma financial information are as follows:
1.Net sales were decreased by $41 million and by $119 million for the three and six months ended June 30, 2024, respectively, to remove the sales of the Architectural segment that was sold by Masonite prior to the close of the Arrangement.
2.Net earnings were increased by $56 million for the three and six months ended June 30, 2024, to remove transaction costs incurred by Masonite.
3.Net earnings were increased by $29 million and $47 million for the three and six months ended June 30, 2024, respectively, to move transaction costs incurred by the Company to the beginning of the comparative period.
4.Net earnings were decreased by $46 million and by $90 million for the three and six months ended June 30, 2024, respectively, to give effect to the tax impact of pro forma adjustments.
The pro forma financial information does not reflect any anticipated synergies or dis-synergies, operating efficiencies or cost savings that may result from the Arrangement and integration costs that may be incurred.
9. ASSETS HELD FOR SALE
On November 4, 2024, the Company entered into a related party agreement to sell its building materials business in China and Korea to a member of the business' management team. At that time, the Company met the assets held for sale criteria. The disposal further aligns with the strategy to reshape the Company to focus on residential and commercial building products in North America and Europe. The transaction includes six insulation manufacturing facilities in China and a roofing manufacturing facility in Korea. The building materials business, within the Insulation segment, represents annual revenues of approximately $130 million.
During the fourth quarter of 2024, the Company reclassified $2 million as held for sale within Other current liabilities on the Consolidated Balance Sheets. The Company also recorded the assets at the fair value less cost to sell, which was less than the carrying value and resulted in an impairment of $91 million primarily related to Property, Plant and Equipment and Goodwill. The impairment was included in Loss on sale of business on the Consolidated Statements of Earnings within the Company's 2024 Form 10-K. The Company estimated the fair value of these assets, less cost to sell, using Level 3 inputs.
During the three and six months ended June 30, 2025, the Company incurred an additional loss of $24 million and $26 million as a result of amendments to the related party agreement and changes in working capital. This loss is included within Loss on sale of business on the Consolidated Statements of Earnings. These changes also resulted in an adjustment of $4 million as held for sale within Other current liabilities on the Consolidated Balance Sheets.
The Company completed the transaction on July 22, 2025. The Company is currently in the process of finalizing certain related transfers, which are expected to be completed by the end of the first quarter of fiscal year 2026.
10. WARRANTIES
The Company records a liability for warranty obligations at the date the related products are sold. Adjustments are made as new information becomes available. Please refer to Note 1 of the Consolidated Financial Statements within our 2024 Form 10-K for information about our separately-priced extended warranty contracts. A reconciliation of the warranty liability is as follows:

| Six Months Ended June 30,
(In millions) | 2025 | 2024
Beginning balance | $ | 99 |  | $ | 97 |
Amounts accrued for current year | 12 |  | 10 |
Acquired obligations | — |  | 4 |
Settlements of warranty claims | (14) |  | (11) |
Ending balance | $ | 97 |  | $ | 100 |

26

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
11. RESTRUCTURING
The Company may incur restructuring, and other exit costs in connection with its global cost reduction, product line and productivity initiatives and the Company’s growth strategy.
Building Materials Business Sale Restructuring
On November 4, 2024, the Company entered into a related party agreement to sell its Insulation segment's building materials business in China and Korea to a member of the business’ management team. During 2024, the Company recorded the assets at the fair value less cost to sell, which was less than the carrying value and resulted in an impairment of $91 million related primarily to Property, Plant and Equipment and Goodwill.
Following the signing of the agreement, the Company took actions to reduce headcount and implement cost savings initiatives. These actions are expected to result in cumulative costs of approximately $15 million, primarily related to severance and other exit costs. During the first six months of 2025, the Company did not incur any charges related to this project.
Acquisition-Related Restructuring
Following the acquisition of Masonite, within the Company's Doors segment, the Company took actions to realize expected synergies from the newly acquired operations. In June 2025, the Company announced the closure of the Prineville, Oregon plant. In connection with these actions, the Company estimates it will incur cash charges of approximately $12 million primarily related to contract termination costs, severance and other exit costs, and non-cash charges of approximately $30 million, primarily related to accelerated depreciation and write-offs of inventory. The Company is continuing to review synergies as a result of this acquisition and expects to incur a material amount of incremental costs throughout 2025 and into future years.
During the first six months of 2025, the Company recorded $17 million of charges, including non-cash charges of $9 million related to accelerated depreciation and $8 million of cash charges primarily related to severance.
Global Composites Restructuring
In December 2023, the Company took actions to reduce costs throughout its former Composites segment given then current market conditions, primarily through global workforce reductions, as well as streamlining manufacturing and supply chain operations. These actions primarily include salaried workforce reductions and the relocation of the Changzhou, China operations to Hangzhou, China.
In connection with these actions, the Company estimates it will incur cash charges in the range of $20 million to $30 million, primarily related to severance and other exit costs, including termination costs, and non-cash charges in the range of $15 million to $20 million, primarily related to accelerated depreciation.
During the first six months of 2025, the Company incurred charges of $5 million primarily related to severance.
Protective Packaging Exit
In May 2023, the Company made the decision to exit the Protective Packaging business within the Roofing segment, including the production and sale of wood packaging, metal packaging and custom products. Exiting Protective Packaging allowed the Company to focus resources on the growth of its building materials products, which supports the future growth aspirations of the enterprise. With the exit of the Protective Packaging business, the Company closed its plants in Dorval, Quebec and Mission, British Columbia, Canada. The Company also ceased operations at its Qingdao, China facility.
In connection with the exit of the Protective Packaging business, the Company estimated that it would incur cash charges of approximately $15 million, primarily related to severance and other exit costs. Additionally, the Company expected to incur total non-cash charges in the range of $70 million to $75 million, primarily related to accelerated depreciation of property, plant and equipment and accelerated amortization of definite-lived intangibles.
During the first six months of 2025, the Company did not incur any charges relating to this project. The Company does not expect to incur any future charges.
27

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Wabash Facility Closure
In April 2023, the Company took actions to support its strategy to operate a flexible and cost-efficient manufacturing network through decisions to relocate the Wabash, Indiana mineral wool operations to Joplin, Missouri, and to exit the U.S. granulated mineral wool market. These actions resulted in cumulative costs of approximately $30 million in 2023, primarily related to severance and accelerated depreciation.
During the first six months of 2025, the Company did not incur any charges relating to this project. The Company does not expect to incur any future charges.
European Operating Structure Optimization
In March 2023, the Company took actions to optimize the operating structure of its segments across Europe to increase its competitiveness. These actions are expected to result in cumulative costs of approximately $20 million, primarily related to severance and other exit costs. During the first six months of 2025, the Company recorded $1 million of income primarily related to a reduction in severance. The Company does not expect to recognize significant incremental costs related to these actions.
Consolidated Statements of Earnings From Continuing Operations Classification
The following table presents the impact and respective location of total restructuring on the Consolidated Statements of Earnings From Continuing Operations, which are included within Corporate, Other and Eliminations:

|  | Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | Location | 2025 | 2024 | 2025 | 2024
Accelerated depreciation | Cost of sales | $ | (9) |  | $ | (3) |  | $ | (9) |  | $ | (7) |
Other exit costs | Cost of sales | (1) |  | (2) |  | (1) |  | (5) |
Other exit costs | Marketing and administrative expenses | (1) |  | (1) |  | (1) |  | (1) |
Severance | Other expense, net | (7) |  | (41) |  | (9) |  | (48) |
Other exit costs | Other expense, net | — |  | — |  | (1) |  | — |
Total restructuring costs |  | $ | (18) |  | $ | (47) |  | $ | (21) |  | $ | (61) |

Summary of Unpaid Liabilities
The following table summarizes the status of the unpaid liabilities from the Company’s restructuring activities:

| June 30, 2025 |  |
(In millions) | Acquisition-related Restructuring | Building Materials Business Sale | Global Composites Restructuring | Protective Packaging Exit | Wabash Facility Closure | European Operating Structure Optimization |  |
Balance at December 31, 2024 | $ | 3 |  | $ | 6 |  | $ | 14 |  | $ | — |  | $ | — |  | $ | 5 |  |  |
Restructuring costs | 17 |  | — |  | 5 |  | — |  | — |  | (1) |  |  |
Payments | (5) |  | — |  | (3) |  | — |  | — |  | (2) |  |  |
Accelerated depreciation and other non-cash items | (9) |  | — |  | 2 |  | — |  | — |  | — |  |  |
Balance at June 30, 2025 | $ | 6 |  | $ | 6 |  | $ | 18 |  | $ | — |  | $ | — |  | $ | 2 |  |  |
Cumulative charges incurred | $ | 72 |  | $ | 6 |  | $ | 38 |  | $ | 83 |  | $ | 33 |  | $ | 14 |  |  |

As of June 30, 2025, the remaining liability balance was comprised of $32 million related to severance, which the Company expects to pay over the next twelve months.
28

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)

| June 30, 2024
(In millions) | Acquisition-related Restructuring | Global Composites Restructuring | Protective Packaging Exit | Wabash Facility Closure | European Operating Structure Optimization
Balance at December 31, 2023 | $ | — |  | $ | 12 |  | $ | 1 |  | $ | 3 |  | $ | 6 |
Restructuring costs | 41 |  | 13 |  | 4 |  | — |  | 3 |
Payments | (17) |  | (3) |  | (3) |  | (3) |  | (3) |
Accelerated depreciation and other non-cash items | (21) |  | (7) |  | (2) |  | — |  | — |
Balance at June 30, 2024 | $ | 3 |  | $ | 15 |  | $ | — |  | $ | — |  | $ | 6 |
Cumulative charges incurred | $ | 41 |  | $ | 29 |  | $ | 82 |  | $ | 33 |  | $ | 15 |

12. DEBT
Details of the Company’s outstanding long-term debt, as well as the fair values, are as follows:

| June 30, 2025 |  | December 31, 2024
(In millions) | Carrying Value | Fair Value |  | Carrying Value | Fair Value |
3.400% senior notes, net of discount and financing fees, due 2026 | $ | 399 |  | 99 | % |  | $ | 399 |  | 98 | % |
5.500% senior notes, net of discount and financing fees, due 2027 | 497 |  | 102 | % |  | 497 |  | 102 | % |
5.375% senior notes, net of discount and financing fees, due 2028 | — |  | — | % |  | 29 |  | 99 | % |
3.950% senior notes, net of discount and financing fees, due 2029 | 448 |  | 98 | % |  | 447 |  | 95 | % |
3.500% senior notes, net of discount and financing fees, due 2030 | 2 |  | 90 | % |  | 2 |  | 89 | % |
3.500% senior notes, net of discount and financing fees, due 2030 | 341 |  | 96 | % |  | 338 |  | 93 | % |
3.875% senior notes, net of discount and financing fees, due 2030 | 298 |  | 97 | % |  | 298 |  | 94 | % |
5.700% senior notes, net of discount and financing fees, due 2034 | 790 |  | 104 | % |  | 790 |  | 102 | % |
7.000% senior notes, net of discount and financing fees, due 2036 | 369 |  | 113 | % |  | 369 |  | 112 | % |
4.300% senior notes, net of discount and financing fees, due 2047 | 590 |  | 81 | % |  | 589 |  | 80 | % |
4.400% senior notes, net of discount and financing fees, due 2048 | 391 |  | 82 | % |  | 391 |  | 80 | % |
5.950% senior notes, net of discount and financing fees, due 2054 | 683 |  | 101 | % |  | 683 |  | 99 | % |
Various finance leases, due through 2050 (a) | 308 |  | 100 | % |  | 267 |  | 100 | % |
Total long-term debt | 5,116 |  | N/A |  | 5,099 |  | N/A |
Less – current portion of finance leases and other (a) | 36 |  | 100 | % |  | 32 |  | 100 | % |
Long-term debt, net of current portion | $ | 5,080 |  | N/A |  | $ | 5,067 |  | N/A |

(a)The Company determined that the book value of the above noted long-term debt instruments approximates fair value.
The fair values of the Company’s outstanding long-term debt instruments were estimated using market observable inputs, including quoted prices in active markets, market indices and interest rate measurements. Within the hierarchy of fair value measurements, these are Level 2 fair values.
Senior Notes
The Company issued $500 million of 2027 senior notes with an annual interest rate of 5.500%, $800 million of 2034 senior notes with an annual interest rate of 5.700% and $700 million of 2054 senior notes with an annual interest rate of 5.950% on May 31, 2024. The proceeds from these notes were used to repay a portion of the outstanding borrowings under the 364-Day Credit Facility (as defined below) that was used to fund a portion of the purchase of Masonite in the second quarter of 2024 and to pay related fees and expenses.
29

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
On May 1, 2024, in connection with the acquisition of Masonite, we commenced an offer to exchange (the “Exchange Offer”) any and all of Masonite’s outstanding 3.50% Senior Notes due 2030 (the “Masonite 2030 notes”) for new 3.50% Senior Notes due 2030 of Owens Corning (the “Owens Corning 2030 notes”). On May 22, 2024, 99.51% of the outstanding Masonite 2030 notes were exchanged and we issued $373 million aggregate principal amount of Owens Corning 2030 notes, which was a non-cash financing transaction for the Company. Interest on the notes is payable semiannually in arrears on February 15 and August 15 each year, beginning on August 15, 2024. Following the settlement of the Exchange Offer, approximately $2 million of the Masonite 2030 notes that were not exchanged remain outstanding, which has been recorded on the Consolidated Balance Sheets.
On April 15, 2024, in connection with the acquisition of Masonite, we commenced a tender offer (the “Tender Offer”) to purchase any and all of Masonite's outstanding 5.375% Senior Notes due 2028 (the “Masonite 2028 notes”) with an aggregate value of $501 million. On May 13, 2024, 94.25% of the outstanding Masonite 2028 notes were validly tendered, with Owens Corning making a cash payment on May 16, 2024 of approximately $480 million, inclusive of $7 million of interest and $1 million premium on tender. Following the settlement of the Tender Offer, approximately $29 million of the Masonite 2028 notes that were not tendered remain outstanding, which has been recorded on the Consolidated Balance Sheets. Interest on the Masonite 2028 notes is payable semiannually in arrears on February 1 and August 1 each year. On February 1, 2025, the Company issued a par call to repay the remaining portion of its outstanding Masonite 2028 notes for $30 million inclusive of accrued interest.
The Company issued $300 million of 2030 senior notes on May 12, 2020. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on December 1, 2020. The proceeds from these notes were used for general corporate purposes.
The Company issued $450 million of 2029 senior notes on August 12, 2019. Interest on the notes is payable semiannually in arrears on February 15 and August 15 each year, beginning on February 15, 2020. The proceeds from these notes were used to repay $416 million of our 2022 senior notes and $34 million of our 2036 senior notes.
The Company issued $400 million of 2048 senior notes on January 25, 2018. Interest on the notes is payable semiannually in arrears on January 30 and July 30 each year, beginning on July 30, 2018. The proceeds from these notes were used, along with borrowings on a $600 million term loan commitment and borrowings on the Receivables Securitization Facility (as defined below), to fund the purchase of Paroc in the first quarter of 2018.
The Company issued $600 million of 2047 senior notes on June 26, 2017. Interest on the notes is payable semiannually in arrears on January 15 and July 15 each year, beginning on January 15, 2018. A portion of the proceeds from these notes was used to fund the purchase of Pittsburgh Corning in 2017 and for general corporate purposes. The remaining proceeds were used to repay $144 million of our 2019 senior notes and $140 million of our 2036 senior notes.
The Company issued $400 million of 2026 senior notes on August 8, 2016. Interest on the notes is payable semiannually in arrears on February 15 and August 15 each year, beginning on February 15, 2017. A portion of the proceeds from these notes was used to redeem $158 million of our 2016 senior notes. The remaining proceeds were used to pay down portions of our Receivables Securitization Facility and for general corporate purposes.
The Company issued $400 million of 2024 senior notes on November 12, 2014. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on June 1, 2015. A portion of the proceeds from these notes was used to repay $242 million of our 2016 senior notes and $105 million of our 2019 senior notes. The remaining proceeds were used to pay down our Senior Revolving Credit Facility (as defined below), finance general working capital needs, and for general corporate purposes. In the fourth quarter of 2024, the Company fully repaid the 2024 senior notes of $400 million at maturity.
The Company issued $550 million of 2036 senior notes on October 31, 2006. Interest on the notes is payable semiannually in arrears on June 1 and December 1 each year, beginning on June 1, 2007. The proceeds of these notes were used to pay certain unsecured and administrative claims, finance general working capital needs and for general corporate purposes.
Collectively, the Company's senior notes above, other than the Masonite 2028 notes or the Masonite 2030 notes, are referred to as the “Senior Notes.” The Senior Notes are general unsecured obligations of the Company and rank pari passu with all existing and future senior unsecured indebtedness of the Company. The Company has the option to redeem all or part of the Senior Notes at any time at a “make-whole” redemption price. The Company is subject to certain covenants in connection with the issuance of the Senior Notes that it believes are usual and customary. The Company was in compliance with these covenants as of June 30, 2025.
30

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Senior Revolving Credit Facility
On March 5, 2025, the Company amended its senior revolving credit facility (the “Senior Revolving Credit Facility”) to increase the available principal amount from $1.0 billion to $1.5 billion and to extend the maturity to March 2030. The Senior Revolving Credit Facility includes both borrowings and letters of credit. Borrowings under the Senior Revolving Credit Facility may be used for general corporate purposes and working capital. The Company has the discretion to borrow under multiple options, which provide for varying terms and interest rates including the United States prime rate, federal funds rate plus a spread or forward-looking term rate based on the Secured Overnight Financing Rate (“Term SOFR”) plus a spread.
The Senior Revolving Credit Facility contains various covenants, including a maximum allowed leverage ratio, that the Company believes are usual and customary for a senior unsecured credit agreement. The Company was in compliance with these covenants as of June 30, 2025.
During the first quarter of 2025, the Company borrowed $30 million under the Senior Revolving Credit Facility, which was subsequently repaid with proceeds from the issuance of CP Notes (as defined below). The Company had no borrowings outstanding and $1.5 billion available under the Senior Revolving Credit Facility as of June 30, 2025.
Receivables Securitization Facility
The receivables securitization facility (the "Receivables Securitization Facility") had a Receivables Purchase Agreement (“RPA”) that is accounted for as secured borrowings in accordance with ASC 860, “Accounting for Transfers and Servicing.” Owens Corning Sales, LLC and Owens Corning Receivables LLC, each a subsidiary of the Company, had an RPA with certain financial institutions. On February 25, 2025, the Company amended and restated the RPA to extend the scheduled maturity date to April 2025. Effective March 31, 2025, the Company terminated the Receivables Securitization Facility and RPA.
Under the RPA, the Company had the ability to borrow at the lenders’ cost of funds, which approximated Term SOFR plus a spread. Alternatively, the Company had the ability to borrow at the higher of the United States prime rate or the Overnight Bank Funding Rate plus a spread. The RPA contained various covenants, including a maximum allowed leverage ratio, that the Company believes are usual and customary for a securitization facility.
Owens Corning Receivables LLC’s sole business consisted of the purchase or acceptance through capital contributions of trade receivables and related rights from Owens Corning Sales, LLC and the subsequent retransfer of or granting of a security interest in such trade receivables and related rights to certain purchasers who were party to the RPA.
During the first quarter of 2025, the Company borrowed $299 million under the Receivables Securitization Facility which was subsequently repaid with proceeds from the issuance of CP Notes.
364-Day Credit Facility
On March 1, 2024, the Company entered into an unsecured term loan agreement in an aggregate principal amount of $3.0 billion, which matures 364 days after the facility is initially funded with a single drawing (the “364-Day Credit Facility”).
In May 2024, to fund a portion of the purchase of Masonite, the Company borrowed $2.8 billion using Term SOFR plus a spread on the 364-Day Credit Facility. As a result of the borrowing, the Company incurred approximately $16 million of financing fees which were amortized to Interest expense, net on the Consolidated Statements of Earnings. During the second quarter of 2024, the Company completely repaid the 364-Day Credit Facility with a combination of proceeds from the issuance of new senior notes, borrowings on the Receivables Securitization Facility and cash on hand. Based on terms of the agreement, no further amounts can be drawn.
Commercial Paper
On March 5, 2025, the Company established a $1.5 billion commercial paper program ("CP Program") for the issuance of unsecured commercial paper notes (the “CP Notes”) with maturities ranging up to 397 days from the date of issuance. The CP Notes may not be voluntarily prepaid or redeemed by the Company prior to maturity and rank pari passu with all existing and future senior unsecured indebtedness of the Company. The proceeds from the CP Notes will be used to finance the Company’s short-term liquidity needs and other general corporate purposes. The Senior Revolving Credit Facility is designated to be a liquidity backstop for the CP Notes outstanding under the CP Program. We do not intend to have outstanding borrowings under the CP Program in excess of available capacity under our Senior Revolving Credit Facility. As of June 30, 2025, there were $420 million of CP Notes outstanding under the CP Program with a weighted average interest rate and weighted average maturity period of 4.60% and 27 days, respectively. The CP Notes are reported net of any discount and are included within Short-term debt on the Company's Consolidated Balance Sheets.
31

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
13. CONTINGENT LIABILITIES AND OTHER MATTERS
The Company may be involved in various legal and regulatory proceedings relating to employment, antitrust, tax, product liability, environmental, contracts, intellectual property and other matters (collectively, “Proceedings”). The Company regularly reviews the status of such Proceedings along with legal counsel. Liabilities for such Proceedings are recorded when it is probable that the liability has been incurred and when the amount of the liability can be reasonably estimated. Liabilities are adjusted when additional information becomes available. Except as set forth below under “Litigation and Regulatory Proceedings,” management believes that the amount of any reasonably possible losses in excess of any amounts accrued, if any, with respect to such Proceedings or any other known claim, including the matters described below under the caption Environmental Matters (the “Environmental Matters”), are not material to the Company’s financial statements. While the likelihood is remote, the disposition of the Proceedings and Environmental Matters could have a material impact on the results of operations, cash flows or liquidity in any given reporting period.
Litigation and Regulatory Proceedings
The Company is involved in litigation and regulatory proceedings from time to time in the regular course of its business. The Company believes that adequate provisions for resolution of all contingencies, claims and pending matters have been made for probable losses that are reasonably estimable.
During the second quarter of 2023, the Company’s subsidiary, Paroc Group OY (“Paroc”), which the Company acquired in 2018, notified the appropriate European maritime regulatory authorities that specific products in its marine insulation product line may not meet certain fire safety requirements in accordance with their certifications. Paroc voluntarily withdrew these specific products from the market, issued recalls, and suspended distribution and sales of these products (the “Recalled Products”). Paroc continues to cooperate with the applicable regulatory and government authorities and work with its customers and end-users to assist with remediation for the recall. The Company has included an estimated liability for expected future costs related to the Recalled Products on its Consolidated Balance Sheets as of June 30, 2025 and December 31, 2024. The estimated liability is primarily based on claims received, as well as assumptions related to the estimated costs of the remedy for the Recalled Products. At this time, we cannot estimate a range of loss for any additional costs related to the Recalled Products that exceed the current estimated liability. We reevaluate these assumptions each period and the related liability may be adjusted when factors indicate that the liability is either not sufficient to cover or exceeds the estimated costs related to the Recalled Products. Based on the factors currently known, we believe the appropriate liability has been established at this time. It is reasonably possible that additional costs related to the Recalled Products could be incurred that exceed the estimated liability by amounts that could be material to our Consolidated Financial Statements.
Due to these nonconformances, the Company reviewed the Paroc insulation product portfolio. The review has concluded. In addition to addressing the Recalled Products, the Company continues to assess potential nonconformances related to certain ventilation duct and steel beam insulation products. Paroc suspended sales of these affected insulation products as a precautionary measure while it reviews the potential nonconformances, but has not issued recalls. We expect to incur costs associated with the resolution of this matter. The amount or range of any potential loss cannot be reasonably estimated at this time.
Environmental Matters
The Company has established policies and procedures designed to ensure that its operations are conducted in compliance with all relevant laws and regulations and that enable the Company to meet its high standards for corporate sustainability and environmental stewardship. Our manufacturing facilities are subject to numerous foreign, federal, state and local laws and regulations relating to the presence of hazardous materials, pollution and protection of the environment, including emissions to air, reductions of greenhouse gases, discharges to water, management of hazardous materials, handling and disposal of solid wastes, use of chemicals in our manufacturing processes and remediation of contaminated sites. All Company manufacturing facilities are either ISO 14001 certified or deploy environmental management systems based on ISO 14001 principles. The Company’s 2030 Sustainability Goals include significant global reductions in energy use, water consumption, waste to landfill, and emissions of greenhouse gases, fine particulate matter, and volatile organic air emissions and protection of biodiversity.
Owens Corning is involved in remedial response activities and is responsible for environmental remediation at a number of sites, including certain of its currently owned or formerly owned plants. These responsibilities arise under a number of laws, including, but not limited to, the Federal Resource Conservation and Recovery Act, and similar state or local laws pertaining to the management and remediation of hazardous materials and petroleum. The Company has also been named a potentially responsible party under the U.S. Federal Superfund law, similar state or local laws pertaining to the management and remediation of hazardous materials and petroleum. The Company became involved in these sites as a result of government
32

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
action or in connection with business acquisitions. As of June 30, 2025, the Company was involved with a total of 25 sites worldwide, including 10 Superfund and state or country equivalent sites and 15 owned or formerly owned sites. None of the liabilities for these sites are individually significant to the Company.
Remediation activities generally involve a potential range of activities and costs related to soil, groundwater and sediment contamination. This can include pre-cleanup activities such as fact-finding and investigation, risk assessment, feasibility studies, remedial action design and implementation (where actions may range from monitoring to removal of contaminants, to installation of longer-term remediation systems). A number of factors affect the cost of environmental remediation, including the number of parties involved in a particular site, the determination of the extent of contamination, the length of time the remediation may require, the complexity of environmental regulations, variability in clean-up standards, the need for legal action and changes in remediation technology. Taking these factors into account, Owens Corning reasonably estimates the costs of remediation to be paid over a period of years. The Company accrues an amount on an undiscounted basis, when a liability is probable and reasonably estimable. Actual cost may differ from these estimates for the reasons mentioned above. At June 30, 2025, the Company had an accrual totaling $3 million for these costs, of which the current portion is $2 million. Changes in required remediation procedures or timing of those procedures, or discovery of contamination at additional sites, could result in material increases to the Company’s environmental obligations.
During the first quarter of 2024, the Procuraduría Federal de Protección al Ambiente (“PROFEPA”) issued a ruling to Owens Corning Mexico, S. de R.L. de C.V., a subsidiary of the Company (“OC Mexico”), citing violations of Mexico’s air emissions regulations at OC Mexico’s facility in Mexico City, Mexico and imposing monetary sanctions of approximately $1 million. OC Mexico previously performed all related corrective action and, as of the date of this report, is in compliance with applicable federal and local environmental laws. During the second quarter of 2025, a final judgment by the Mexican Appeals Court dismissed PROFEPA’s appeal, cancelling a majority of the fine. OC Mexico has filed for enforcement, and the matter is considered resolved.
14. STOCK COMPENSATION
Description of the Plan
On April 20, 2023, the Company’s stockholders approved the Owens Corning 2023 Stock Plan (the “2023 Stock Plan”), which authorizes grants of stock options, stock appreciation rights, stock awards (including restricted stock awards, restricted stock units and bonus stock awards), performance share awards and performance share units. At June 30, 2025, the number of shares remaining available under the 2023 Stock Plan for all stock awards was 2.6 million.
Prior to the 2023 Stock Plan, employees were eligible to receive stock awards under the Owens Corning 2019 Stock Plan.
Total Stock-Based Compensation Expense
Stock-based compensation expense included in both Marketing and administrative expenses and Net earnings/(loss) from discontinued operations attributable to Owens Corning, net of tax in the accompanying Consolidated Statements of Earnings is as follows:

| Three Months Ended June 30, |  | Six Months Ended June 30,
(In millions) | 2025 |  | 2024 |  | 2025 |  | 2024
Total stock-based compensation expense from continuing operations | $ | 16 |  |  | $ | 37 |  |  | $ | 36 |  |  | $ | 50 |
Total stock-based compensation expense from discontinued operations | 2 |  |  | 2 |  |  | 3 |  |  | 3 |
Total stock-based compensation expense | $ | 18 |  |  | $ | 39 |  |  | $ | 39 |  |  | $ | 53 |

Restricted Stock Units
The Company has granted restricted stock units (“RSUs”) under its stockholder-approved stock plans. Generally, all outstanding RSUs will fully settle in stock. Compensation expense for RSUs is measured based on the closing market price of the stock at date of grant and is recognized on a straight-line basis over the vesting period, which is typically three to four years. The 2023 Stock Plan allows alternate vesting schedules for death, disability and retirement. The weighted-average grant date fair value of RSUs granted under the 2023 Stock Plan in 2025 was $175.12.
33

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Masonite Equity Awards
On May 15, 2024, the Company converted outstanding Masonite stock-based incentive awards to Masonite employees at a 0.8 equity award exchange ratio. Masonite equity awards include outstanding and unvested awards of restricted stock units and performance stock units (“PRSUs”) under the Masonite International Corporation 2021 Omnibus Incentive Plan (“Masonite Stock Plan”) that were held by employees of Masonite, which were exchanged for time-vesting restricted stock units of Owens Corning RSUs in connection with the completion of the transactions contemplated by the Arrangement Agreement. The converted stock-based incentive awards include 0.2 million PRSUs and 0.3 million restricted stock units.
The equity award exchange ratio was determined by the consideration amount of $133 per share divided by the volume weighted average closing sale price of one share of Owens Corning common stock for the ten consecutive trading days ended March 15, 2024 of $174.03 per share, in accordance with the terms of the Arrangement Agreement.
In accordance with the Arrangement Agreement, the number of Masonite shares underlying the PRSUs was equal to (i) 107.33% of target for PRSUs granted in February 2022, (ii) 100% of target for PRSUs granted in August 2022 and (iii) 122% of target for PRSUs granted in February 2023.
The fair value of the Owens Corning RSUs issued for Masonite outstanding equity awards was $85 million as of the date of acquisition, of which $35 million was related to pre-combination expense and was included in the purchase price. The remaining portion of $50 million relates to post-combination expense, of which $26 million was accelerated as of June 30, 2025. As of June 30, 2025, the future unrecognized expense related to the converted outstanding RSUs was approximately $8 million which will be recognized over the remaining service period of approximately 1.35 years. Please refer to Notes 8 and 11 of the Consolidated Financial Statements for further information. Future equity-based awards to Company employees who were former Masonite employees may be granted from the remaining available shares under the Masonite Stock Plan. At June 30, 2025, the number of shares remaining available under the Masonite Stock Plan was 0.6 million shares of Owens Corning common stock.
The following table summarizes the Company’s RSU activity:

| Number of RSUs |  | Weighted-Average Fair Value
Balance at December 31, 2024 | 1,249,146 |  |  | $ | 107.31 |
Granted | 271,073 |  |  | 175.12 |
Vested | (425,756) |  |  | 112.32 |
Forfeited | (25,906) |  |  | 154.54 |
Balance at June 30, 2025 | 1,068,557 |  |  | $ | 121.36 |

As of June 30, 2025, there was $68 million of total unrecognized compensation cost related to RSUs. This total includes $8 million of unrecognized compensation related to converted Masonite equity awards. The remaining $60 million of unrecognized compensation cost is related to RSUs granted under both the Owens Corning Stock Plans and Masonite Stock Plan. That cost is expected to be recognized over a weighted-average period of 1.90 years. The total grant date fair value of shares vested during the six months ended June 30, 2025 and 2024 was $48 million and $64 million, respectively.
Performance Share Units
The Company has granted performance share units (“PSUs”) as a part of its long-term incentive plan. All outstanding PSUs will fully settle in stock. The amount of shares ultimately distributed from all PSUs is contingent on meeting internal company-based metrics or an external-based stock performance metric.
In the six months ended June 30, 2025, the Company granted both internal company-based and external-based metric PSUs.
Internal Company-based metrics
The internal Company-based metric PSUs are based on various Company metrics and typically vest after a three-year period. The amount of stock distributed will vary from 0% to 200% of PSUs awarded depending on each award’s design and performance versus the company-based metrics.
34

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
The initial fair value for all internal company-based metric PSUs assumes that the performance goals will be achieved and is based on the grant date stock price. This assumption is monitored quarterly and if it becomes probable that such goals will not be achieved or will be exceeded, compensation expense recognized will be adjusted and previous surplus compensation expense recognized will be reversed or additional expense will be recognized. The expected term represents the period from the grant date to the end of the three-year performance period. Pro-rata vesting may be utilized in the case of death, disability or retirement and awards, if earned, will be paid at the end of the three-year period.
The following table provides a summary of the grant date fair values of the internal Company-based metric PSUs:

| Six Months Ended June 30,
| 2025 |  | 2024
Grant date fair value of units granted | $ | 171.94 |  |  | $ | 147.18 |

External-based metrics
The external-based metric PSUs vest after a three-year period. Outstanding grants issued in or after 2023 are based on the Company’s total stockholder return relative to a peer group. The amount of stock distributed will vary from 0% to 200% of PSUs awarded depending on the relative stockholder return performance. The fair value of external-based metric PSUs has been estimated at the grant date using a Monte Carlo simulation that uses various assumptions.
The following table provides a summary of the assumptions for PSUs granted in 2025 and 2024:

| Six Months Ended June 30, |  |  |  |
| 2025 |  | 2024 |  |  |  |
Expected volatility | 32.78% |  | 33.88% |  |  |  |
Risk free interest rate | 4.14% |  | 3.94% |  |  |  |
Expected term (in years) | 2.90 |  | 2.91 |  |  |  |
Grant date fair value of units granted | $ | 221.54 |  | $ | 195.95 |  |  |  |

The risk-free interest rate was based on zero-coupon United States Treasury STRIPS at the grant date. The expected term represents the period from the grant date to the end of the three-year performance period.
PSU Summary
As of June 30, 2025, there was $26 million total unrecognized compensation cost related to PSUs. That cost is expected to be recognized over a weighted-average period of 1.98 years.
The following table summarizes the Company’s PSU activity:

| Number of PSUs |  | Weighted-Average Grant Date Fair Value
Balance at December 31, 2024 | 219,075 |  |  | $ | 117.23 |
Granted | 120,321 |  |  | 188.47 |
Vested | — |  |  | — |
Forfeited | (22,749) |  |  | 166.54 |
Balance at June 30, 2025 | 316,647 |  |  | $ | 147.57 |

Employee Stock Purchase Plan
The Owens Corning Employee Stock Purchase Plan (“ESPP”) is a tax-qualified plan under Section 423 of the Internal Revenue Code. The purchase price of shares purchased under the ESPP is equal to 85% of the lower of the fair market value of shares of Owens Corning common stock at the beginning or ending of the offering period, which is a six-month period ending on May 31 and November 30 of each year. On April 16, 2020, the Company’s stockholders approved the Amended and Restated Owens Corning Employee Stock Purchase Plan, which increased the number of shares available for issuance under the plan by 4.2 million shares. As of June 30, 2025, 2.9 million shares remain available for purchase.
35

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
Included in total stock-based compensation expense is $2 million and $5 million of expense related to the Company’s ESPP recognized during the three and six months ended June 30, 2025, respectively. During the three and six months ended June 30, 2024, the Company recognized expense of $2 million and $4 million, respectively, related to the Company’s ESPP. As of June 30, 2025, there was $3 million of total unrecognized compensation cost related to the ESPP.
15. EARNINGS PER SHARE
The following table is a reconciliation of weighted-average shares for calculating basic and diluted earnings per share:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions, except per share amounts) | 2025 |  | 2024 | 2025 |  | 2024
Net earnings from continuing operations attributable to Owens Corning | $ | 334 |  |  | $ | 256 |  | $ | 589 |  |  | $ | 534 |
Net earnings (loss) from discontinued operations attributable to Owens Corning, net of tax | 29 |  |  | 29 |  | (319) |  |  | 50 |
NET EARNINGS ATTRIBUTABLE TO OWENS CORNING | $ | 363 |  |  | $ | 285 |  | $ | 270 |  |  | $ | 584 |
Weighted-average number of shares outstanding used for basic earnings per share | 85.0 |  |  | 87.2 |  | 85.4 |  |  | 87.3 |
Unvested restricted stock units and performance share units | 0.5 |  |  | 0.8 |  | 0.5 |  |  | 0.8 |
Weighted-average number of shares outstanding and common equivalent shares used for diluted earnings per share | 85.5 |  |  | 88.0 |  | 85.9 |  |  | 88.1 |
Earnings (Loss) per common share attributable to Owens Corning common stockholders: |  |  |  |  |  |
Basic - continuing operations | $ | 3.93 |  |  | $ | 2.94 |  | $ | 6.90 |  |  | $ | 6.12 |
Basic - discontinued operations | $ | 0.34 |  |  | $ | 0.33 |  | $ | (3.74) |  |  | $ | 0.57 |
Basic | $ | 4.27 |  |  | $ | 3.27 |  | $ | 3.16 |  |  | $ | 6.69 |
Diluted - continuing operations | $ | 3.91 |  |  | $ | 2.91 |  | $ | 6.86 |  |  | $ | 6.06 |
Diluted - discontinued operations | $ | 0.34 |  |  | $ | 0.33 |  | $ | (3.71) |  |  | $ | 0.57 |
Diluted | $ | 4.25 |  |  | $ | 3.24 |  | $ | 3.15 |  |  | $ | 6.63 |

For the three and six months ended June 30, 2025 and June 30, 2024, there were no unvested RSUs or PSUs that had an anti-dilutive effect on earnings per share.
On May 13, 2025, the Board of Directors approved a new share repurchase program under which the Company is authorized to repurchase up to 12 million shares of the Company’s outstanding common stock (the “2025 Repurchase Authorization”). On December 1, 2022, the Board of Directors approved a share repurchase program under which the Company is authorized to repurchase up to 10 million shares of the Company’s outstanding common stock (together with the 2025 Repurchase Authorization, the "Repurchase Authorizations"). The Repurchase Authorizations enable the Company to repurchase shares through the open market, privately negotiated, or other transactions. The actual number of shares repurchased will depend on timing, market conditions and other factors and will be at the Company’s discretion.
The Company repurchased 2.3 million shares of its common stock for $322 million, inclusive of applicable taxes, during the six months ended June 30, 2025, under the Repurchase Authorizations. As of June 30, 2025, 16.0 million shares remain available for repurchase under the Repurchase Authorizations.
The Company repurchased 0.9 million shares of its common stock for $130 million, inclusive of applicable taxes, during the six months ended June 30, 2024.
36

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
16. INCOME TAXES
The following table provides the Income tax expense and effective tax rate for the periods indicated:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions, except effective tax rate) | 2025 |  | 2024 | 2025 |  | 2024
Income tax expense | $ | 110 |  |  | $ | 101 |  | $ | 198 |  |  | $ | 184 |
Effective tax rate | 25 | % |  | 28 | % | 25 | % |  | 26 | %

The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the three and six months ended June 30, 2025 is primarily due to U.S. state and local income tax expense and foreign rate differential.
The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the three months ended June 30, 2024 is primarily due to U.S. state and local income tax expense, foreign rate differential, U.S. federal taxes on foreign earnings and permanently non-deductible expenses both of which were related to the acquisition of Masonite. The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the six months ended June 30, 2024 is primarily due to U.S. state and local income tax expense and foreign rate differential, partially offset by discrete tax benefits related to valuation allowance and stock-based compensation.
On July 4, 2025, the One Big Beautiful Bill ("OBBB") Act, which includes a broad range of tax reform provisions, was signed into law in the United States, and we continue to assess its impact. We currently do not expect the OBBB Act to have a material impact on our estimated annual effective tax rate in 2025.
37

Table of Contents
OWENS CORNING AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (continued)
(unaudited)
17. CHANGES IN ACCUMULATED OTHER COMPREHENSIVE DEFICIT
The following table summarizes the changes in accumulated other comprehensive income (deficit):

| Three Months Ended June 30, | Six Months Ended June 30, |
(In millions) | 2025 | 2024 | 2025 | 2024 |
Currency Translation Adjustment |  |  |  |  |
Beginning balance | $ | (459) |  | $ | (359) |  | $ | (534) |  | $ | (318) |  |
Gain (loss) on foreign currency translation | 179 |  | (62) |  | 254 |  | (103) |  |
Other comprehensive income (loss), net of tax | 179 |  | (62) |  | 254 |  | (103) |  |
Ending balance | $ | (280) |  | $ | (421) |  | $ | (280) |  | $ | (421) |  |
Pension and Other Postretirement Adjustment |  |  |  |  |
Beginning balance | $ | (184) |  | $ | (196) |  | $ | (181) |  | $ | (196) |  |
Amounts reclassified from AOCI to net earnings, net of tax (a) | (1) |  | (2) |  | (1) |  | (1) |  |
Amounts classified into AOCI, net of tax | (4) |  | 1 |  | (7) |  | — |  |
Other comprehensive loss, net of tax | (5) |  | (1) |  | (8) |  | (1) |  |
Ending balance | $ | (189) |  | $ | (197) |  | $ | (189) |  | $ | (197) |  |
Hedging Adjustment |  |  |  |  |
Beginning balance | $ | 25 |  | $ | 16 |  | $ | 24 |  | $ | 11 |  |
Amounts reclassified from AOCI to net earnings, net of tax (b) | — |  | 3 |  | (2) |  | 10 |  |
Amounts classified into AOCI, net of tax | (6) |  | 2 |  | (3) |  | — |  |
Other comprehensive (loss) income, net of tax | (6) |  | 5 |  | (5) |  | 10 |  |
Ending balance | $ | 19 |  | $ | 21 |  | $ | 19 |  | $ | 21 |  |
Total AOCI ending balance | $ | (450) |  | $ | (597) |  | $ | (450) |  | $ | (597) |  |

(a)These AOCI components are included in the computation of total Pension and Other postretirement expense and are recorded in Non-operating income.
(b)Amounts reclassified from (loss) gain on cash flow hedges are reclassified from AOCI to income when the hedged item affects earnings and is recognized in Cost of sales or Interest expense, net depending on the hedged item. See Note 5 for additional information.
38

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
This Management’s Discussion and Analysis (“MD&A”) is intended to help investors understand Owens Corning, our operations and our present business environment. MD&A is provided as a supplement to, and should be read in conjunction with, our Consolidated Financial Statements and the accompanying Notes thereto contained in this report. Unless the context requires otherwise, the terms “Owens Corning,” “Company,” “we” and “our” in this report refer to Owens Corning and its subsidiaries.
GENERAL
Owens Corning is a building products leader committed to building a sustainable future through material innovation. As described below, the Company now has three reporting segments: Roofing, Insulation and Doors. Through these lines of business, the Company manufactures and sells products that provide durable, sustainable, energy-efficient solutions. We are a market leader in many of our major product categories.
EXECUTIVE OVERVIEW
Net earnings from continuing operations attributable to Owens Corning were $334 million in the second quarter of 2025, compared to $256 million in the same period of 2024. The Company generated $703 million in adjusted earnings before interest, taxes, depreciation and amortization (“Adjusted EBITDA”) from continuing operations for the second quarter of 2025, compared to $678 million in the same period of 2024. See the Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization From Continuing Operations section of the MD&A for further information regarding Adjusted EBITDA from continuing operations, including the reconciliation to net earnings from continuing operations attributable to Owens Corning. Second quarter of 2025 segment earnings before interest, taxes, depreciation and amortization (“EBITDA”) performance in our Roofing segment compared to the same period of 2024 increased $20 million, while our Insulation segment decreased $21 million. Second quarter of 2025 EBITDA for our Doors segment increased $14 million when compared to the same period of 2024. Within our Corporate, Other and Eliminations category, General corporate expense and other decreased by $12 million.
2025 Share Repurchase Program
On May 13, 2025, the Board of Directors approved a new share repurchase program under which the Company is authorized to repurchase up to 12 million shares of the Company’s outstanding common stock (the “2025 Repurchase Authorization”). The 2025 Repurchase Authorization enables the Company to repurchase shares through the open market, privately negotiated, or other transactions. The actual number of shares repurchased will depend on timing, market conditions and other factors and will be at the Company’s discretion. This authorization is in addition to the previously announced share repurchase program.
Glass Reinforcements Divestiture
On February 13, 2025, the Company entered into a definitive agreement ("GR Agreement") for the sale of our global glass reinforcements (“GR”) business for a purchase price of approximately $436 million, less costs to sell. As of June 30, 2025, the estimated purchase price was $515 million, net of cash, and less costs to sell. The change since signing is due to the changes in customary and transaction-specific price adjustments which are subject to further changes through the date of the final closing adjustments. The GR business, historically part of the Company’s Composites segment, manufactures, fabricates, and sells glass fiber reinforcements for a wide variety of applications in wind energy, infrastructure, industrial, transportation and consumer markets. The sale will complete Owens Corning’s review of strategic alternatives for the business, as previously announced on February 9, 2024, and aligns with our strategy to reshape the Company to focus on building products in North America and Europe. The transaction is expected to close in 2025 and is subject to customary regulatory approvals and other conditions.
The transaction represents a strategic shift that has a major effect on the Company's operations and financial results. Effective January 1, 2025, the GR business’ financial results are reflected in the Company’s consolidated financial statements as discontinued operations for all periods presented. In the three and six months ended June 30, 2025, net earnings (loss) from discontinued operations attributable to Owens Corning was $29 million of earnings and $319 million of loss, respectively, on the Consolidated Statements of Earnings, primarily related to the loss recognized upon the classification of the GR business into discontinued operations. The loss on discontinued operations was determined by comparing the carrying value of the discontinued operation to the fair value of the business, as derived from the signed GR Agreement, less estimated costs to sell.
As a result of classifying the GR business as a discontinued operation, a portion of the Goodwill from our former Composites reporting unit was allocated to the Balance Sheets of the discontinued operation as of March 31, 2025 and December 31, 2024. As of the date of classification of the GR business as a discontinued operation, the Company determined the amount of Goodwill to allocate based on the relative fair values of the discontinued operation and the former Composites reporting unit. This resulted in an allocation of $98 million of Goodwill to the discontinued operation.
39

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
After allocating Goodwill to the discontinued operation, the Company compared the carrying value of the discontinued operation to the fair value of the discontinued operation, defined as the sale price less estimated selling costs. During the three and six months ended June 30, 2025, the Company incurred a pre-tax loss on classification as discontinued operations of $19 million and $381 million, respectively.
Changes in Reportable Segments
Effective January 1, 2025, due to a strategic shift in how we manage our business as a result of the GR Agreement and the classification of the GR business as a discontinued operation, we changed the composition of our reportable segments. As a result, all prior period information was recast to reflect this change. The Company now has three reportable segments: Roofing, Insulation and Doors.
Tariff and Trade Uncertainties
Beginning in the first quarter of 2025, the U.S. government announced additional tariffs on goods imported into the U.S. from numerous countries and multiple nations have responded with reciprocal tariffs and other actions. The Company continues to monitor the economic effects of such announcements. Based on the current tariff policies, the Company expects to partially offset the operating profit impact of the enacted tariffs with supply chain adjustments and productivity and cost savings actions. To the extent additional tariffs or other trade restrictions are enacted and the Company is unable to offset the tariffs or the tariffs negatively impact demand, the Company’s revenue and profitability could be adversely impacted.
RESULTS OF OPERATIONS
Consolidated Results

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Net sales | $ | 2,747 |  | $ | 2,497 |  | $ | 5,277 |  | $ | 4,514 |
Gross margin | $ | 858 |  | $ | 813 |  | $ | 1,583 |  | $ | 1,441 |
% of net sales | 31 | % | 33 | % | 30 | % | 32 | %
Marketing and administrative expenses | $ | 263 |  | $ | 229 |  | $ | 524 |  | $ | 419 |
Other expense, net | $ | 29 |  | $ | 134 |  | $ | 49 |  | $ | 169 |
Earnings from continuing operations before interest and taxes | $ | 505 |  | $ | 419 |  | $ | 912 |  | $ | 795 |
Interest expense, net | $ | 63 |  | $ | 63 |  | $ | 127 |  | $ | 79 |
Income tax expense | $ | 110 |  | $ | 101 |  | $ | 198 |  | $ | 184 |
Net earnings from continuing operations attributable to Owens Corning | $ | 334 |  | $ | 256 |  | $ | 589 |  | $ | 534 |
Net earnings (loss) from discontinued operations attributable to Owens Corning | $ | 29 |  | $ | 29 |  | $ | (319) |  | $ | 50 |
Net earnings attributable to Owens Corning | $ | 363 |  | $ | 285 |  | $ | 270 |  | $ | 584 |

The Consolidated Results discussion below provides a summary of our results and the trends affecting our business, and should be read in conjunction with the more detailed Segment Results discussion that follows.
NET SALES
In the second quarter and year-to-date 2025, net sales increased $250 million and increased $763 million, respectively, compared to the same periods in 2024. For the second quarter and year-to-date 2025, the increase in net sales was primarily driven by the revenues from our Doors segment as a result of the Masonite acquisition and higher selling prices, which were partially offset by lower sales volumes for our Insulation and Roofing segments.
GROSS MARGIN
In the second quarter and year-to-date 2025, gross margin increased $45 million and increased $142 million, respectively, compared to the same periods in 2024. For the second quarter and year to date 2025, the increase was primarily driven by the margins from our Doors segment as a result of the Masonite acquisition and higher selling prices, which were partially offset by lower sales volumes.
40

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
MARKETING AND ADMINISTRATIVE EXPENSES
In the second quarter and year-to-date 2025, marketing and administrative expenses increased $34 million and increased $105 million, respectively, compared to the same periods in 2024. For the second quarter and year-to-date 2025, the increase was primarily driven by the addition of the Doors segment's selling, general, and administrative expenses, along with inflation throughout the rest of the organization.
OTHER EXPENSE, NET
In the second quarter and year-to-date 2025, other expenses decreased $105 million and decreased $120 million, respectively, compared to the same periods in 2024. For the second quarter and year-to-date 2025, the decrease was primarily driven by lower acquisition-related transaction and restructuring costs, along with gains on sale of certain precious metals.
INTEREST EXPENSE, NET
In the second quarter and year-to-date 2025, interest expense, net, remained flat and increased $48 million, respectively, compared to the same periods in 2024. For year-to-date, the increase was driven by interest on the higher long-term debt balances and lower interest income due to lower cash balances.
INCOME TAX EXPENSE
Income tax expense for the three and six months ended June 30, 2025 was $110 million and $198 million, respectively. For the second quarter of 2025 and the six months ended June 30, 2025, the Company’s effective tax rate was 25% and 25%, respectively. The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the three and six months ended June 30, 2025 is primarily due to U.S. state and local income tax expense, and foreign rate differential.
The realization of deferred tax assets depends on achieving a certain minimum level of future taxable income. Management currently believes that it is not reasonably possible that the minimum level of taxable income will be met within the next 12 months to reduce the valuation allowances of certain foreign jurisdictions.
Income tax expense for the three and six months ended June 30, 2024 was $101 million and $184 million, respectively. For the second quarter of 2024 and the six months ended June 30, 2024, the Company's effective tax rate was 28% and 26%, respectively. The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the three months ended June 30, 2024 is primarily due to U.S. state and local income tax expense, foreign rate differential, U.S. federal taxes on foreign earnings and permanently non-deductible expenses both of which were related to the acquisition of Masonite. The difference between the effective tax rate and the U.S. federal statutory tax rate of 21% for the six months ended June 30, 2024 is primarily due to U.S. state and local income tax expense and foreign rate differential, partially offset by discrete tax benefits related to valuation allowance and stock-based compensation.
Restructuring Costs
The Company has incurred restructuring and other exit costs in connection with its global cost reduction, product line and productivity initiatives. These costs are recorded within Corporate, Other and Eliminations. Please refer to Note 11 of the Consolidated Financial Statements for further information on the nature of these costs.
The following table presents the impact and respective location of these income (expense) items on the Consolidated Statements of Earnings From Continuing Operations:

|  | Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | Location | 2025 | 2024 | 2025 | 2024
Accelerated depreciation | Cost of sales | $ | (9) |  | $ | (3) |  | (9) |  | (7) |
Other exit costs | Cost of sales | (1) |  | (2) |  | (1) |  | (5) |
Other exit costs | Marketing and administrative expenses | (1) |  | (1) |  | (1) |  | (1) |
Severance | Other expense, net | (7) |  | (41) |  | (9) |  | (48) |
Other exit costs | Other expense, net | — |  | — |  | (1) |  | — |
Total restructuring costs |  | $ | (18) |  | $ | (47) |  | $ | (21) |  | $ | (61) |

41

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization From Continuing Operations
Adjusted EBITDA from continuing operations is a non-GAAP measure that excludes certain items that management does not allocate to our segment results because it believes they are not representative of the Company’s ongoing operations. Adjusted EBITDA from continuing operations is used internally by the Company for various purposes, including reporting results of operations to the Board of Directors of the Company, analysis of performance and related employee compensation measures. Although management believes that these adjustments result in a measure that provides a useful representation of our operational performance, the adjusted measure should not be considered in isolation or as a substitute for Net earnings from continuing operations attributable to Owens Corning as prepared in accordance with accounting principles generally accepted in the United States.
Adjusting income (expense) items to EBITDA are shown in the table below:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Restructuring excluding depreciation | $ | (9) |  | $ | (34) |  | $ | (12) |  | $ | (44) |
Loss on Assets Held for Sale | (24) |  | — |  | (26) |  | — |
Gains on sale of certain precious metals | 12 |  | — |  | 21 |  | — |
Strategic review-related charges | — |  | (15) |  | — |  | (17) |
Paroc marine recall | (1) |  | (6) |  | (2) |  | (7) |
Acquisition-related transaction costs | — |  | (29) |  | — |  | (47) |
Acquisition-related integration costs excluding amortization | (4) |  | (21) |  | (6) |  | (21) |
Recognition of acquisition inventory fair value step-up | — |  | (12) |  | — |  | (12) |
Total adjusting items | $ | (26) |  | $ | (117) |  | $ | (25) |  | $ | (148) |

The reconciliation from Net earnings from continuing operations attributable to Owens Corning to Adjusted EBITDA from continuing operations is shown in the table below:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
NET EARNINGS FROM CONTINUING OPERATIONS ATTRIBUTABLE TO OWENS CORNING | $ | 334 |  | $ | 256 |  | $ | 589 |  | $ | 534 |
Net (loss) earnings attributable to non-redeemable and redeemable noncontrolling interests | (1) |  | 1 |  | (1) |  | — |
NET EARNINGS FROM CONTINUING OPERATIONS | 333 |  | 257 |  | 588 |  | 534 |
Equity in net earnings of affiliates | 1 |  | 2 |  | 1 |  | 2 |
Income tax expense | 110 |  | 101 |  | 198 |  | 184 |
EARNINGS FROM CONTINUING OPERATIONS BEFORE TAXES | 442 |  | 356 |  | 785 |  | 716 |
Interest expense, net | 63 |  | 63 |  | 127 |  | 79 |
EARNINGS FROM CONTINUING OPERATIONS BEFORE INTEREST AND TAXES | 505 |  | 419 |  | 912 |  | 795 |
Less: Adjusting items from above | (26) |  | (117) |  | (25) |  | (148) |
Depreciation and amortization | 172 |  | 142 |  | 331 |  | 250 |
ADJUSTED EBITDA FROM CONTINUING OPERATIONS | $ | 703 |  | $ | 678 |  | $ | 1,268 |  | $ | 1,193 |

Segment Results
Effective January 1, 2025, we changed our segment measure of profitability for our reportable segments from Earnings before interest and taxes ("EBIT") to EBITDA, as the measure used for purposes of making decisions about allocating resources to the segments and assessing performance. Prior period amounts have been recast to reflect the new segment measure for profitability.
42

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
EBITDA by segment consists of net sales less related costs and expenses plus depreciation and amortization. EBITDA is presented on a basis that is used internally for evaluating segment performance. Certain items, such as general corporate expenses or income and certain other expense or income items, are excluded from the internal evaluation of segment performance. Accordingly, these items are not reflected in EBITDA for our reportable segments and are included in the Corporate, Other and Eliminations category, which is presented following the discussion of our reportable segments. Segment EBITDA is the principal measure used by the chief operating decision maker ("CODM") to assess segment performance and make decisions on the allocation of resources.
Roofing
The table below provides a summary of net sales and EBITDA for the Roofing segment:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Net sales | $ | 1,303 |  | $ | 1,252 |  | $ | 2,423 |  | $ | 2,350 |
% change from prior year | 4 | % | N/A | 3 | % | N/A
EBITDA | $ | 457 |  | $ | 437 |  | $ | 789 |  | $ | 775 |
EBITDA as a % of net sales | 35 | % | 35 | % | 33 | % | 33 | %

NET SALES
In our Roofing segment, net sales in the second quarter of 2025 increased $51 million compared to the same period in 2024 due to higher selling prices of $51 million. Lower volumes of approximately 1% were offset by favorable mix.
For year-to-date 2025, net sales in our Roofing segment increased $73 million compared to the same period in 2024. Higher selling prices of $88 million and favorable mix were partially offset by lower sales volumes of approximately 1%.
EBITDA
In our Roofing segment, EBITDA in the second quarter of 2025 increased $20 million compared to the same period in 2024 due to higher selling prices of $51 million, which were partially offset by higher manufacturing costs of $12 million. The remaining variance was driven by input cost inflation of $7 million, higher selling, general, and administrative expenses and slightly lower volumes.
For year-to-date 2025, EBITDA in our Roofing segment increased $14 million compared to the same period in 2024. Higher selling prices of $88 million more than offset higher manufacturing costs of $31 million, input cost inflation of $15 million and lower volumes. The remaining difference was driven about equally by higher selling, general, and administrative expenses and unfavorable mix.
OUTLOOK
In our Roofing segment, the Company expects non-discretionary residential re-roof and remodeling activity to moderate in the near-term. Uncertainties that may impact Roofing demand include demand from storms and other weather-related events, competitive pricing pressure and the cost and availability of raw materials, particularly asphalt. The Company will continue to focus on managing costs, capital expenditures and working capital to best service the market demand.
43

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
Insulation
The table below provides a summary of net sales and EBITDA for the Insulation segment:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Net sales | $ | 934 |  | $ | 974 |  | $ | 1,843 |  | $ | 1,931 |
% change from prior year | -4 | % | N/A | -5 | % | N/A
EBITDA | $ | 225 |  | $ | 246 |  | $ | 450 |  | $ | 469 |
EBITDA as a % of net sales | 24 | % | 25 | % | 24 | % | 24 | %

NET SALES
In our Insulation segment, net sales in the second quarter of 2025 decreased $40 million compared to the same period in 2024 due to lower sales volumes of approximately 4% and unfavorable mix, which were partially offset by higher selling prices of $12 million.
For year-to-date 2025, net sales in our Insulation segment decreased $88 million compared to the same period in 2024. The decrease was driven primarily by lower sales volumes of approximately 5%, unfavorable mix, and $10 million of unfavorable impact of translating sales denominated in foreign currencies into United States dollars, which were partially offset by higher selling prices of $34 million.
EBITDA
In our Insulation segment, EBITDA in the second quarter of 2025 decreased $21 million compared to the same period in 2024. The impact of production downtime, unfavorable mix, input cost inflation of $11 million and lower sales volumes were partially offset by higher selling prices of $12 million and lower manufacturing costs of $6 million.
For the year-to-date 2025, EBITDA in our Insulation segment decreased $19 million compared to the same period in 2024. The decrease was driven by lower sales volumes, input cost inflation of $21 million, and the impact of production downtime. This was partially offset by higher selling prices of $34 million and lower manufacturing costs of $11 million.
OUTLOOK
The outlook for Insulation demand is driven by North American new residential construction, remodeling and repair activity, as well as non-residential construction activity in the United States, Canada, Europe and Latin America. Demand in non-residential insulation markets is most closely correlated to industrial production growth and overall economic activity in the markets we serve. Demand for residential insulation is most closely correlated to U.S. housing starts.
During the second quarter of 2025, the average Seasonally Adjusted Annual Rate (“SAAR”) of U.S. housing starts was approximately 1.327 million, a decrease from an annual average of approximately 1.348 million starts in the second quarter of 2024.
The Company expects the new residential construction market in North America to be temporarily challenged, driven by an overall weakness in housing starts due to mortgage rates. The global non-residential construction markets are expected to be relatively stable in the near-term. The Company continues to concentrate on driving productivity, managing costs, capital expenditures and working capital as we position ourselves to expand capacity within our existing manufacturing network.
44

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
Doors
The table below provides a summary of net sales and EBITDA for the Doors segment:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Net sales | $ | 554 |  | $ | 311 |  | $ | 1,094 |  | $ | 311 |
% change from prior year | N/A | N/A | N/A | N/A
EBITDA | $ | 75 |  | $ | 61 |  | $ | 143 |  | $ | 61 |
EBITDA as a % of net sales | 14 | % | N/A | 13 | % | N/A

NET SALES
In our new Doors segment, net sales in the second quarter and year-to-date of 2025 were $554 million and $1,094 million, respectively, primarily due to the acquisition of Masonite, which was completed on May 15, 2024.
EBITDA
In our newly acquired Doors segment, EBITDA in the second quarter and year-to-date 2025 were $75 million and $143 million, respectively, primarily due to the acquisition of Masonite, which was completed on May 15, 2024.
OUTLOOK
The outlook for the Doors segment is driven by the residential new construction and residential repair and remodeling markets in North America and Europe. The Company expects the North America residential new construction market to be temporarily challenged, with discretionary residential repair and remodeling activity in North America remaining soft. Due to a weaker macroeconomic outlook and higher interest rates in Europe, the Company expects these markets to remain challenged. The Company will concentrate on managing costs, capital expenditures and working capital.
Corporate, Other and Eliminations
The table below provides a summary of EBITDA for the Corporate, Other and Eliminations category:

| Three Months Ended June 30, | Six Months Ended June 30,
(In millions) | 2025 | 2024 | 2025 | 2024
Restructuring excluding depreciation | $ | (9) |  | $ | (34) |  | $ | (12) |  | $ | (44) |
Gains on sale of certain precious metals | 12 |  | — |  | 21 |  | — |
Strategic review-related charges | — |  | (15) |  | — |  | (17) |
Paroc marine recall | (1) |  | (6) |  | (2) |  | (7) |
Acquisition-related transaction costs | — |  | (29) |  | — |  | (47) |
Acquisition-related integration costs excluding amortization | (4) |  | (21) |  | (6) |  | (21) |
Loss on Assets Held for Sale | (24) |  | — |  | (26) |  | — |
Recognition of acquisition inventory fair value step-up | — |  | (12) |  | — |  | (12) |
General corporate expense and other | (54) |  | (66) |  | (114) |  | (112) |
EBITDA | $ | (80) |  | $ | (183) |  | $ | (139) |  | $ | (260) |

EBITDA
In Corporate, Other and Eliminations, EBITDA expenses for the second quarter and year-to-date 2025 were lower by $103 million and $121 million, respectively, compared to the same period in 2024, primarily driven by lower acquisition-related transaction and restructuring costs, along with gains on sale of certain precious metals.
General corporate expense and other for the second quarter of 2025 were lower by $12 million compared to the same period in 2024. For year-to-date, general corporate expense and other were higher by $2 million compared to the same period in 2024.
45

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
OUTLOOK
In 2025, we estimate general corporate expenses to be approximately $240 million to $260 million.
LIQUIDITY, CAPITAL RESOURCES AND OTHER RELATED MATTERS
Liquidity
The Company’s primary sources of liquidity are its balance of Cash and cash equivalents from continuing operations of $230 million as of June 30, 2025, its commercial paper program ("CP Program") and Senior Revolving Credit Facility (as defined below).
The Company has a $1.5 billion senior revolving credit facility (the “Senior Revolving Credit Facility”) that has been amended from time to time. The Senior Revolving Credit Facility was most recently amended in March 2025 to increase the borrowing limit from $1.0 billion to $1.5 billion and extend the maturity date to March 2030. No other significant terms impacting liquidity were amended.
The agreement governing our Senior Revolving Credit Facility contains various covenants that we believe are usual and customary. These covenants include a maximum allowed leverage ratio. We were in compliance with these covenants as of June 30, 2025.
On March 5, 2025, the Company established the CP Program for the issuance of $1.5 billion in unsecured commercial paper notes (the "CP Notes") with maturities up to 397 days from the date of issuance. We do not intend to have outstanding commercial paper borrowings in excess of available capacity under the Senior Revolving Credit Facility.
The Company had a Receivables Securitization Facility that was amended from time to time. Effective March 31, 2025, the Company terminated the Receivables Securitization Facility.
As a holding company, we have no operations of our own and most of our assets are held by our direct and indirect subsidiaries. Dividends and other payments or distributions from our subsidiaries will be used to meet our debt service and other obligations and to enable us to pay dividends to our stockholders. Please refer to the Risk Factors disclosed in Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2024 (the “2024 Form 10-K”) for details on the factors that could inhibit our subsidiaries’ ability to pay dividends or make other distributions to the parent company.
Cash Flows
Cash and cash equivalents were $265 million as of June 30, 2025, compared to $296 million as of June 30, 2024. Cash and cash equivalents held by foreign subsidiaries may be subject to foreign withholding taxes upon repatriation to the U.S. As of June 30, 2025 and December 31, 2024, the Company had $106 million and $95 million, respectively, in cash and cash equivalents in certain of our foreign subsidiaries. The Company continues to assert indefinite reinvestment in accordance with Accounting Standards Codification (“ASC”) 740 based on the laws as of enactment of the tax legislation.
Operating activities: Net cash flow provided by operating activities decreased by $239 million for the six months ended June 30, 2025 compared to the same period in 2024. The decrease was primarily due to higher decreases in accounts payable and higher increases in inventory, partially offset by higher cash earnings when compared to the same period in 2024. For the six months ended June 30, 2025, there was no depreciation and amortization related to discontinued operations.
Investing activities: Net cash flow used for investing activities decreased by $2,807 million for the six months ended June 30, 2025 compared to the same period in 2024. The decrease was primarily driven by the Masonite acquisition in the prior year. For the six months ended June 30, 2025, cash paid for property, plant and equipment related to discontinued operations was $43 million.
Financing activities: Net cash flow used for financing activities increased by $1,433 million for the six months ended June 30, 2025 compared to the same period in 2024. The increase was primarily driven by higher net proceeds from long-term debt and the Receivables Securitization Facility in the prior year related to the Masonite acquisition as well as higher treasury stock repurchases in the current year. These were slightly offset by the issuance of CP Notes.
46

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
Material Cash Requirements
Our anticipated uses of cash include capital expenditures, working capital needs, share repurchases, meeting financial obligations, payments of any dividends authorized by our Board of Directors, acquisitions, restructuring actions, divestitures and pension contributions. We expect that our cash on hand, coupled with future cash flows from operations and other available sources of liquidity, including our Senior Revolving Credit Facility and our CP Program, will provide ample liquidity to enable us to meet our cash requirements.
Please refer to Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations, included in our 2024 Form 10-K for more details on these material cash requirements. During the second quarter of 2025, there have been no material changes to our expected uses of cash and contractual obligations.
Debt
As of June 30, 2025, the Company had $5.5 billion of total debt. The Company's Short-term debt includes $420 million of CP Notes.
On March 5, 2025, the Company amended its senior revolving credit facility (the “Senior Revolving Credit Facility”) to increase the available principal amount from $1.0 billion to $1.5 billion and to extend the maturity to March 2030. During the first quarter of 2025, the Company borrowed $30 million under the Senior Revolving Credit Facility, which was subsequently repaid with proceeds from the issuance of CP Notes. The Company had no borrowings outstanding and $1.5 billion available under the Senior Revolving Credit Facility as of June 30, 2025.
On March 5, 2025, the Company established a CP Program for the issuance of CP Notes with maturities ranging up to 397 days from the date of issuance. As of June 30, 2025, there were $420 million of CP Notes outstanding under the Program with a weighted average interest rate and weighted average maturity period of 4.60% and 27 days, respectively. We do not intend to have outstanding borrowings under our CP Program in excess of available capacity under our Senior Revolving Credit Facility.
On February 25, 2025, the Company amended the receivables securitization facility (the "Receivables Securitization Facility") to extend the maturity date to April 2025. During the first quarter of 2025, the Company borrowed $299 million under the Receivables Securitization Facility which was subsequently repaid with proceeds from the issuance of CP Notes. Subsequently, on March 31, 2025, the Company terminated the Receivables Securitization Facility.
On April 15, 2024, in connection with the acquisition of Masonite, we commenced a tender offer (the "Tender Offer") to purchase any and all of Masonite's outstanding 5.375% Senior Notes due 2028 (the “Masonite 2028 notes”) with an aggregate value of $501 million. On May 13, 2024, 94.25% of the outstanding Masonite 2028 notes were validly tendered. Following the settlement of the Tender Offer, approximately $29 million of the Masonite 2028 notes that were not tendered remained outstanding, which has been recorded on the Consolidated Balance Sheets as of December 31, 2024. On February 1, 2025, the Company redeemed the remaining portion of the outstanding Masonite 2028 notes for $30 million inclusive of accrued interest.
On May 31, 2024, the Company issued $500 million of 2027 senior notes with an annual interest rate of 5.500%, $800 million of 2034 senior notes with an annual interest rate of 5.700% and $700 million of 2054 senior notes with an annual interest rate of 5.950%.
Supplier Finance Programs
We review supplier terms and conditions on an ongoing basis, and have negotiated payment terms extensions in recent years in connection with our efforts to reduce working capital and improve cash flow. Separate from those terms extension actions, certain of our subsidiaries have entered into paying agency agreements with third-party administrators. These voluntary supply chain finance programs (collectively, the “Programs”) generally give participating suppliers the ability to sell, or otherwise pledge as collateral, their receivables from the Company to the participating financial institutions, at the sole discretion of both the suppliers and financial institutions. The Company is not a party to the arrangements between the suppliers and the financial institutions. The Company’s obligations to its suppliers, including amounts due and scheduled payment dates, are not impacted by the suppliers’ decisions to sell, or otherwise pledge as collateral, amounts under these arrangements. The Company’s payment terms to the financial institutions, including the timing and amount of payments, are based on the original supplier invoices. One of the Programs includes a parent guarantee to the participating financial institution for a certain U.S. subsidiary that, at the time of the respective program’s inception in 2015, was a guarantor subsidiary of the Company’s credit agreement. The obligations are presented as Accounts payable within Total current liabilities on the Consolidated Balance Sheets and all activity related to the obligations is presented within operating activities on the Consolidated Statements of Cash Flow.
47

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
The desire of suppliers and financial institutions to participate in the Programs could be negatively impacted by, among other factors, the availability of capital committed by the participating financial institutions, the cost and availability of our suppliers’ capital, a credit rating downgrade or deteriorating financial performance of the Company or its participating subsidiaries, or other changes in financial markets beyond our control. We do not expect these risks, or potential long-term growth of our Programs, to materially affect our overall financial condition, as we expect a significant portion of our payments to continue to be made outside of the Programs. Accordingly, we do not believe the Programs have materially impacted our current period liquidity, and do not believe that the Programs are reasonably likely to materially affect liquidity in the future.
Please refer to the Supplier Finance Programs section in Note 1 of the Consolidated Financial Statements for a description of outstanding obligations and payments under the supplier finance programs.
Derivatives
Please refer to Note 5 of the Consolidated Financial Statements.
Fair Value Measurement
Please refer to Notes 5, 8, and 12 of the Consolidated Financial Statements.
SAFETY
One of our primary objectives is the safety and well-being of our employees. Working safely is an unconditional, organization-wide expectation at Owens Corning, which we believe directly benefits employees’ lives, improves our manufacturing processes and reduces our costs. The Company maintains comprehensive safety programs focused on identifying hazards and eliminating risks that can lead to severe injuries. One of our primary safety measures is the Recordable Incident Rate (“RIR”) as defined by the United States Bureau of Labor Statistics. For the three months ended June 30, 2025, our RIR including the impact from our Doors segment as a result of the Masonite acquisition, was 0.60, compared to 0.46 as reported in the same period a year ago, which does not include the Doors segment. For the six months ended June 30, 2025, our RIR including the impact from our Doors segment as a result of the Masonite acquisition, was 0.58, compared to 0.39 as reported in the same period a year ago, which does not include the Doors segment.
ACCOUNTING PRONOUNCEMENTS
Please refer to Note 1 of the Consolidated Financial Statements.
CRITICAL ACCOUNTING ESTIMATES
Goodwill Impairment Indicator Assessment
The Company tests goodwill for impairment during the fourth quarter of each year, or more frequently should circumstances change or events occur that would more likely than not reduce the fair value of a reporting unit below its carrying value.
First Quarter Goodwill Triggering Event
During the quarter, our internal reporting and management structure changed, resulting in the identification of three new reportable segments: Roofing, Insulation and Doors. As a result of our segment reorganization, we reassigned the former Composites reportable segment assets and liabilities into the Roofing and Insulation reportable segments. As this change was considered a goodwill triggering event, we performed an interim goodwill impairment test both prior and subsequent to the reorganization using a discounted cash flow approach for each of the respective reporting units.
Prior to reorganizing the reportable segments, and integrating portions of the former Composites reportable segment, but after allocating Goodwill to discontinued operations, the Company tested the Goodwill for the Roofing, Insulation and Composites reporting units. As a result of this test, we determined that no impairment existed for any of the reporting units and that the business enterprise value for the Roofing, Composites and Insulation reporting units substantially exceeded their carrying values.
Subsequent to allocating Goodwill to the Roofing and Insulation reporting units, as part of reorganization, the Company tested the Goodwill for these Roofing and Insulation reporting units. As a result of this test, we determined that no impairment existed for either reporting unit and that the business enterprise value for the Roofing and Insulation reporting units substantially exceeded their carrying values as of the date of our assessment.
48

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
Re-allocation of Goodwill upon Reorganization
As a result of classifying the GR business as a discontinued operation during the first quarter of 2025, a portion of Composites Goodwill was allocated to the discontinued operation. The Company determined the relative fair value of the discontinued operation to the fair value of the Composites business as of January 1, 2025, and then allocated a proportionate share of Composites Goodwill to the discontinued operation, resulting in an allocation of $98 million of Goodwill.
Remaining Composites Goodwill was allocated between the Roofing and Insulation segments, on a relative fair value basis, based on the discounted cash flows of the portions of the Composites business that were integrated into each. This resulted in an allocation of $263 million of Goodwill to the Roofing reporting unit, and $63 million of Goodwill to the Insulation reporting unit. These amounts are presented as part of the re-segmented reportable segment disclosures as of June 30, 2025 and December 31, 2024 shown in Note 6 of the Consolidated Financial Statements.
Second Quarter Goodwill Triggering Event
In the second quarter of 2025, the Company performed its ongoing assessment to consider whether events or circumstances had occurred that could more likely than not reduce the fair value of the Doors reporting unit below its carrying value. The narrow cushion on the Doors reporting unit, due to its recent acquisition, and the high level of near-term macroeconomic uncertainty caused by recently announced tariffs, triggered the Company to perform an interim goodwill impairment test as of June 30, 2025 for the Doors reporting unit. The fair value of the reporting unit was determined based on a discounted cash flow analysis, or income approach, as well as a market approach, based on market multiples of comparable companies.
As a result of this test, we determined that no impairment existed for the Doors reporting unit as the fair value exceeded the carrying value by approximately 5%. Changes in assumptions or estimates used in our goodwill impairment testing could materially affect the determination of the fair value of the reporting unit. Additional tariffs or trade restrictions that the Company is unable to offset, negative impacts from tariffs on demand, or further declines in the macroeconomic outlook could result in declines in revenues and margins necessitating the need for impairment assessments in future periods. The most significant assumptions used in the fair value analysis were base year revenue, revenue growth rate, adjusted EBITDA margins, discount rate and market multiples under the market approach.
If all other assumptions remain constant, a 1% decrease in the base year revenue would decrease the fair value by approximately 1%, a 1% decrease in the revenue growth rates would decrease the fair value by approximately 4%, a 0.5% decrease in forecasted adjusted EBITDA margins would decrease the fair value by approximately 4%, a 0.5% increase in the selected discount rate of 10.0% would decrease the fair value by approximately 4%, and a decrease of 1 in the selected market multiples under the market approach would decrease the fair value by approximately 5%.
The following table summarizes the segment allocation of recorded goodwill on our Consolidated Balance Sheet as of June 30, 2025:

(In millions) | June 30, 2025 | Percent of Total |  |
Roofing | $ | 661 |  | 23 | % |  |
Insulation | 637 |  | 23 | % |  |
Doors | 1,516 |  | 54 | % |  |
Total goodwill | $ | 2,814 |  | 100 | % |  |

ENVIRONMENTAL MATTERS
Please refer to Note 13 of the Consolidated Financial Statements.
49

Table of Contents
ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (continued)
CAUTIONARY STATEMENT CONCERNING FORWARD-LOOKING STATEMENTS
Our disclosures and analysis in this report, including Management’s Discussion and Analysis of Financial Condition and Results of Operations, contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 (the “Exchange Act”). Forward-looking statements present our current forecasts and estimates of future events. These statements do not strictly relate to historical or current results and can be identified by words such as “anticipate,” “appear,” “assume,” “believe,” “estimate,” “expect,” “forecast,” “intend,” “likely,” “may,” “plan,” “project,” “seek,” “should,” “strategy,” “will” and other terms of similar meaning or import in connection with any discussion of future operating, financial or other performance. These forward-looking statements are subject to risks, uncertainties and other factors and actual results may differ materially from those results projected in the statements. These risks, uncertainties and other factors include, without limitation:
•levels of residential and non-residential construction activity;
•demand for our products;
•industry and economic conditions including, but not limited to, supply chain disruptions, recessionary conditions, inflationary pressures and interest rate and financial markets volatility;
•additional changes to tariff, trade or investment policies or laws by the United States, or similar actions, including reciprocal actions, by foreign governments;
•availability and cost of energy and raw materials;
•competitive and pricing factors;
•relationships with key customers and customer concentration in certain areas;
•our ability to achieve expected synergies, cost reductions and/or productivity improvements;
•issues related to acquisitions, divestitures and joint ventures or expansions;
•our ability to complete the announced divestiture of our GR business on the expected terms and within the anticipated time period, or at all, which is dependent on the parties' ability to satisfy certain closing conditions;
•climate change, weather conditions and storm activity;
•legislation and related regulations or interpretations in the United States or elsewhere;
•domestic and international economic and political conditions, policies or other governmental actions, as well as war and civil disturbance;
•uninsured losses or major manufacturing disruptions, including those from natural disasters, catastrophes, pandemics, theft or sabotage;
•environmental, product-related or other legal and regulatory liabilities, proceedings or actions;
•research and development activities and intellectual property protection;
•issues involving implementation and protection of information technology systems;
•foreign exchange and commodity price fluctuations;
•our level of indebtedness;
•our liquidity and the availability and cost of credit;
•the level of fixed costs required to run our business;
•levels of goodwill or other indefinite-lived intangible assets;
•loss of key employees and labor disputes or shortages; and
•defined benefit plan funding obligations.
All forward-looking statements in this report should be considered in the context of the risks and other factors described herein, including in Item 1A - Risk Factors in Part II of this report, and in Item 1A - Risk Factors in Part I of our 2024 Form 10-K. Users of this report should not interpret the disclosure of any risk factor to imply that the risk has not already materialized. Any forward-looking statements speak only as of the date the statement is made and we undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by federal securities laws. It is not possible to identify all of the risks, uncertainties and other factors that may affect future results. In light of these risks and uncertainties, the forward-looking events and circumstances discussed in this report may not occur and actual results may differ materially from those anticipated or implied in the forward-looking statements. Accordingly, users of this report are cautioned not to place undue reliance on the forward-looking statements.
50

Table of Contents
ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
There has been no material change in our exposure to market risk during the six months ended June 30, 2025. Please refer to “Quantitative and Qualitative Disclosures about Market Risk” contained in Part II, Item 7A of our 2024 Form 10-K for a discussion of our exposure to market risk.
ITEM 4. CONTROLS AND PROCEDURES
The Company maintains (a) disclosure controls and procedures (as such term is defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act), and (b) internal control over financial reporting (as such term is defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act).
The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of the Company’s disclosure controls and procedures as of the end of the period covered by this report. Based on such evaluation, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of such period, the Company’s disclosure controls and procedures are effective.
There has been no change in the Company’s internal control over financial reporting during the quarter ended June 30, 2025 that materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.
51

Table of Contents
PART II
ITEM 1. LEGAL PROCEEDINGS
Information required by this item is incorporated by reference to Note 13 of the Consolidated Financial Statements, Contingent Liabilities and Other Matters.
ITEM 1A. RISK FACTORS
Except as disclosed in the Company's Quarterly Report on Form 10-Q for the period ended March 31, 2025, there have been no material changes to the risk factors disclosed in Item 1A of the Company’s 2024 Form 10-K.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
Recent Sales of Unregistered Securities; Use of Proceeds from Registered Securities.
None.
Issuer Purchases of Equity Securities
The following table provides information about Owens Corning’s purchases of its common stock for each month during the quarterly period covered by this report:

Period | Total Number of Shares (or Units) Purchased* |  | Average Price Paid per Share (or Unit) |  | Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs** |  | Maximum Number of Shares (or Units) that May Yet Be Purchased Under the Plans or Programs**
April 1-30, 2025 | 1,886 |  |  | $ | 140.16 |  |  | — |  |  | 5,653,802 |
May 1-31, 2025 | 744,313 |  |  | 137.61 |  |  | 727,440 |  |  | 16,926,362 |
June 1-30, 2025 | 885,292 |  |  | 136.21 |  |  | 881,051 |  |  | 16,045,311 |
Total | 1,631,491 |  |  | $ | 136.85 |  |  | 1,608,491 |  |  |

* | The Company retained an aggregate of 23,576 shares surrendered to satisfy tax withholding obligations in connection with the vesting of restricted share units granted to our employees.
** | On May 13, 2025, the Board of Directors approved a new share repurchase program under which the Company is authorized to repurchase up to 12 million shares of the Company’s outstanding common stock (the “2025 Repurchase Authorization”). On December 1, 2022, the Board of Directors approved a share repurchase program under which the Company is authorized to repurchase up to 10 million shares of the Company’s outstanding common stock (together with the 2025 Repurchase Authorization, the "Repurchase Authorizations"). The Repurchase Authorizations enable the Company to repurchase shares through the open market, privately negotiated, or other transactions. The actual number of shares repurchased will depend on timing, market conditions and other factors and will be at the Company’s discretion. The Company repurchased 2.3 million shares of its common stock for $322 million, inclusive of applicable taxes, during the six months ended June 30, 2025, under the Repurchase Authorizations. As of June 30, 2025, 16.0 million shares remain available for repurchase under the Repurchase Authorizations.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES
None.
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable.
ITEM 5. OTHER INFORMATION
10b5-1 Plans
During the quarter ended June 30, 2025, no director or officer (as defined in Rule 16a-1(f) promulgated under the Exchange Act) adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" (as each term is defined in Item 408(a) of Regulation S-K).
52

Table of Contents
ITEM 6. EXHIBITS

Exhibit No. | Description
10.1* | Owens Corning Amended and Restated Deferred Compensation Plan, effective as of July 1, 2025 (filed herewith).
10.2* | Restricted Stock Unit Award Agreement, by and between Owens Corning and Marcio Sandri, dated as of June 18, 2025 (filed herewith).
31.1 | Certification of Chief Executive Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a) (filed herewith).
31.2 | Certification of Chief Financial Officer pursuant to Exchange Act Rules 13a-14(a) and 15d-14(a) (filed herewith).
32.1 | Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350 (furnished herewith).
32.2 | Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350 (furnished herewith).
101 | The following materials from the Quarterly Report on Form 10-Q for Owens Corning for the period ended June 30, 2025, formatted in iXBRL (Inline Extensible Business Reporting Language): (i) Consolidated Statements of Earnings, (ii) Consolidated Statements of Comprehensive Earnings, (iii) Consolidated Balance Sheets, (iv) Consolidated Statements of Stockholders' Equity, (v) Consolidated Statements of Cash Flows, (vi) related notes to these financial statements and (vii) document and entity information.

* | Denotes management contract or compensatory plan or arrangement required to be filed as an exhibit pursuant to Form 10-Q.

Owens Corning agrees to furnish to the U.S. Securities and Exchange Commission, upon request, copies of all instruments defining the rights of holders of long-term debt of Owens Corning where the total amount of securities authorized under each issue does not exceed 10% of the total assets of Owens Corning and its subsidiaries on a consolidated basis.
53

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

OWENS CORNING
|  |  |  |  | Registrant
Date: |  | August 6, 2025 | By: |  | /s/ Todd W. Fister
|  |  |  |  | Todd W. Fister
|  |  |  |  | Chief Financial Officer
Date: |  | August 6, 2025 | By: |  | /s/ Mari K. Doerfler
|  |  |  |  | Mari K. Doerfler
|  |  |  |  | Vice President and
|  |  |  |  | Controller

54