{"url_path":"/sec/cffn/10-q/2026/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-08","source_url":"https://www.sec.gov/Archives/edgar/data/1490906/0001490906-26-000018-index.html","accession_number":"0001490906-26-000018","cik":"0001490906","ticker":"CFFN","issuer_name":"Capitol Federal Financial, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1490906/0001490906-26-000018-index.html","primary_entity_key":"0001490906","primary_entity_name":"Capitol Federal Financial, Inc."},"word_count":431,"has_tables":true,"body_markdown":"cffn-20260331\n00014909069/302026Q2falsehttp://fasb.org/us-gaap/2025#OtherAssetshttp://fasb.org/us-gaap/2025#OtherAssetsxbrli:sharesiso4217:USDiso4217:USDxbrli:sharesxbrli:pure00014909062025-10-012026-03-3100014909062026-05-0100014909062026-03-3100014909062025-09-3000014909062026-01-012026-03-3100014909062025-01-012025-03-3100014909062024-10-012025-03-310001490906us-gaap:DepositAccountMember2026-01-012026-03-310001490906us-gaap:DepositAccountMember2025-01-012025-03-310001490906us-gaap:DepositAccountMember2025-10-012026-03-310001490906us-gaap:DepositAccountMember2024-10-012025-03-310001490906cffn:InsuranceServicesMember2026-01-012026-03-310001490906cffn:InsuranceServicesMember2025-01-012025-03-310001490906cffn:InsuranceServicesMember2025-10-012026-03-310001490906cffn:InsuranceServicesMember2024-10-012025-03-310001490906us-gaap:CommonStockMember2025-09-300001490906us-gaap:AdditionalPaidInCapitalMember2025-09-300001490906cffn:EmployeeStockOwnershipPlanMember2025-09-300001490906us-gaap:RetainedEarningsMember2025-09-300001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-09-300001490906us-gaap:RetainedEarningsMember2025-10-012025-12-3100014909062025-10-012025-12-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-10-012025-12-310001490906us-gaap:AdditionalPaidInCapitalMember2025-10-012025-12-310001490906cffn:EmployeeStockOwnershipPlanMember2025-10-012025-12-310001490906us-gaap:CommonStockMember2025-10-012025-12-310001490906us-gaap:CommonStockMember2025-12-310001490906us-gaap:AdditionalPaidInCapitalMember2025-12-310001490906cffn:EmployeeStockOwnershipPlanMember2025-12-310001490906us-gaap:RetainedEarningsMember2025-12-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-12-3100014909062025-12-310001490906us-gaap:RetainedEarningsMember2026-01-012026-03-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2026-01-012026-03-310001490906us-gaap:AdditionalPaidInCapitalMember2026-01-012026-03-310001490906cffn:EmployeeStockOwnershipPlanMember2026-01-012026-03-310001490906us-gaap:CommonStockMember2026-01-012026-03-310001490906us-gaap:CommonStockMember2026-03-310001490906us-gaap:AdditionalPaidInCapitalMember2026-03-310001490906cffn:EmployeeStockOwnershipPlanMember2026-03-310001490906us-gaap:RetainedEarningsMember2026-03-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2026-03-310001490906us-gaap:CommonStockMember2024-09-300001490906us-gaap:AdditionalPaidInCapitalMember2024-09-300001490906cffn:EmployeeStockOwnershipPlanMember2024-09-300001490906us-gaap:RetainedEarningsMember2024-09-300001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-09-3000014909062024-09-300001490906us-gaap:RetainedEarningsMember2024-10-012024-12-3100014909062024-10-012024-12-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-10-012024-12-310001490906us-gaap:AdditionalPaidInCapitalMember2024-10-012024-12-310001490906cffn:EmployeeStockOwnershipPlanMember2024-10-012024-12-310001490906us-gaap:CommonStockMember2024-10-012024-12-310001490906us-gaap:CommonStockMember2024-12-310001490906us-gaap:AdditionalPaidInCapitalMember2024-12-310001490906cffn:EmployeeStockOwnershipPlanMember2024-12-310001490906us-gaap:RetainedEarningsMember2024-12-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-12-3100014909062024-12-310001490906us-gaap:RetainedEarningsMember2025-01-012025-03-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-01-012025-03-310001490906us-gaap:AdditionalPaidInCapitalMember2025-01-012025-03-310001490906cffn:EmployeeStockOwnershipPlanMember2025-01-012025-03-310001490906us-gaap:CommonStockMember2025-03-310001490906us-gaap:AdditionalPaidInCapitalMember2025-03-310001490906cffn:EmployeeStockOwnershipPlanMember2025-03-310001490906us-gaap:RetainedEarningsMember2025-03-310001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-03-3100014909062025-03-310001490906us-gaap:MortgageBackedSecuritiesMember2026-03-310001490906us-gaap:CorporateBondSecuritiesMember2026-03-310001490906us-gaap:MortgageBackedSecuritiesMember2025-09-300001490906us-gaap:CorporateBondSecuritiesMember2025-09-300001490906us-gaap:ResidentialMortgageBackedSecuritiesMember2026-03-310001490906us-gaap:CommercialMortgageBackedSecuritiesMember2026-03-310001490906us-gaap:ResidentialMortgageBackedSecuritiesMember2025-09-300001490906us-gaap:CommercialMortgageBackedSecuritiesMember2025-09-300001490906cffn:PublicUnitDepositsMemberus-gaap:AssetPledgedAsCollateralMember2026-03-310001490906cffn:PublicUnitDepositsMemberus-gaap:AssetPledgedAsCollateralMember2025-09-300001490906cffn:FederalReserveBankMemberus-gaap:AssetPledgedAsCollateralMember2026-03-310001490906cffn:FederalReserveBankMemberus-gaap:AssetPledgedAsCollateralMember2025-09-300001490906us-gaap:AssetPledgedAsCollateralMember2026-03-310001490906us-gaap:AssetPledgedAsCollateralMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:ConstructionLoansMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:ConstructionLoansMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:ConstructionLoansMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:ConstructionLoansMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMember2025-09-300001490906us-gaap:DoubtfulMember2026-03-310001490906us-gaap:DoubtfulMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:PassMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:PassMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:PassMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PassMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:PassMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:PassMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:PassMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:SpecialMentionMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:SubstandardMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:PassMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:PassMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:PassMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PassMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:PassMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:PassMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:PassMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:SpecialMentionMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:SubstandardMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancialAssetPastDueMember2026-03-310001490906cffn:FinancingReceivables30to89DaysPastDueMember2026-03-310001490906us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2026-03-310001490906us-gaap:FinancialAssetPastDueMember2026-03-310001490906us-gaap:FinancialAssetNotPastDueMember2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancialAssetPastDueMember2025-09-300001490906cffn:FinancingReceivables30to89DaysPastDueMember2025-09-300001490906us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-09-300001490906us-gaap:FinancialAssetPastDueMember2025-09-300001490906us-gaap:FinancialAssetNotPastDueMember2025-09-300001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMember2026-01-012026-03-310001490906us-gaap:PaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ExtendedMaturityMember2026-01-012026-03-310001490906cffn:CombinationExtendedMaturityAndPaymentDeferralMember2026-01-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:CommercialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906us-gaap:ConsumerPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:PaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ExtendedMaturityMember2025-10-012026-03-310001490906cffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-10-012026-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMember2025-01-012025-03-310001490906us-gaap:PaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ExtendedMaturityMember2025-01-012025-03-310001490906cffn:CombinationExtendedMaturityAndPaymentDeferralMember2025-01-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:CommercialPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906us-gaap:ConsumerPortfolioSegmentMembercffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:PaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ExtendedMaturityMember2024-10-012025-03-310001490906cffn:CombinationExtendedMaturityAndPaymentDeferralMember2024-10-012025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansOriginatedMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansCorrespondentPurchasedMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMembercffn:OneToFourFamilyLoansBulkPurchasedMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:HomeEquityMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMembercffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMemberus-gaap:ConsumerLoanMemberus-gaap:FinancialAssetPastDueMember2025-03-310001490906cffn:FinancingReceivables30to89DaysPastDueMember2025-03-310001490906us-gaap:FinancingReceivablesEqualToGreaterThan90DaysPastDueMember2025-03-310001490906us-gaap:FinancialAssetPastDueMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2025-12-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2025-12-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2025-12-310001490906us-gaap:CommercialPortfolioSegmentMember2025-12-310001490906us-gaap:ConsumerPortfolioSegmentMember2025-12-310001490906us-gaap:ResidentialPortfolioSegmentMember2024-12-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2024-12-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2024-12-310001490906us-gaap:CommercialPortfolioSegmentMember2024-12-310001490906us-gaap:ConsumerPortfolioSegmentMember2024-12-310001490906us-gaap:ResidentialPortfolioSegmentMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2025-03-310001490906us-gaap:CommercialPortfolioSegmentMember2025-03-310001490906us-gaap:ConsumerPortfolioSegmentMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMember2024-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialRealEstatePortfolioSegmentMember2024-09-300001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:CommercialLoanMember2024-09-300001490906us-gaap:CommercialPortfolioSegmentMember2024-09-300001490906us-gaap:ConsumerPortfolioSegmentMember2024-09-300001490906srt:ScenarioForecastMember2027-03-3100014909062024-10-012025-09-300001490906cffn:PrepaidFHLBAdvancesMember2026-03-310001490906cffn:PrepaidFHLBAdvancesMember2025-10-012026-03-310001490906cffn:ReplacementFHLBAdvancesMember2026-03-310001490906cffn:ReplacementFHLBAdvancesMember2025-10-012026-03-310001490906us-gaap:DomesticCountryMember2026-03-310001490906us-gaap:StateAndLocalJurisdictionMember2026-03-310001490906us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2025-09-300001490906us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2026-03-310001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2026-03-310001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2026-03-310001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2026-03-310001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2026-03-310001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2026-03-310001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:FairValueMeasurementsRecurringMember2026-03-310001490906us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2026-03-310001490906us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2026-03-310001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2025-09-300001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-09-300001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-09-300001490906us-gaap:MortgageBackedSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2025-09-300001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMember2025-09-300001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-09-300001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-09-300001490906us-gaap:CorporateBondSecuritiesMemberus-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel3Member2025-09-300001490906us-gaap:FairValueMeasurementsRecurringMember2025-09-300001490906us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel1Member2025-09-300001490906us-gaap:FairValueMeasurementsRecurringMemberus-gaap:FairValueInputsLevel2Member2025-09-300001490906us-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2025-03-310001490906us-gaap:FairValueInputsLevel3Member2025-03-310001490906us-gaap:MeasurementInputCostToSellMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2026-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:MaximumMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2026-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2026-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:MinimumMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2025-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:MaximumMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2025-03-310001490906us-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Membersrt:WeightedAverageMemberus-gaap:MeasurementInputDiscountForLackOfMarketabilityMember2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:FairValueInputsLevel3Member2025-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:ResidentialPortfolioSegmentMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueInputsLevel3Member2025-03-310001490906us-gaap:CommercialPortfolioSegmentMemberus-gaap:FairValueMeasurementsNonrecurringMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:CarryingReportedAmountFairValueDisclosureMember2026-03-310001490906us-gaap:EstimateOfFairValueFairValueDisclosureMember2026-03-310001490906us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Member2026-03-310001490906us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel2Member2026-03-310001490906us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel3Member2026-03-310001490906us-gaap:CarryingReportedAmountFairValueDisclosureMember2025-09-300001490906us-gaap:EstimateOfFairValueFairValueDisclosureMember2025-09-300001490906us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel1Member2025-09-300001490906us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel2Member2025-09-300001490906us-gaap:EstimateOfFairValueFairValueDisclosureMemberus-gaap:FairValueInputsLevel3Member2025-09-300001490906us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2025-12-310001490906us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2025-12-310001490906us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2026-03-310001490906us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2026-03-310001490906us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2025-09-300001490906us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2025-09-300001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2025-10-012026-03-310001490906us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2024-12-310001490906us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2024-12-310001490906us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2025-03-310001490906us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2025-03-310001490906us-gaap:AccumulatedNetInvestmentGainLossIncludingPortionAttributableToNoncontrollingInterestMember2024-09-300001490906us-gaap:AccumulatedGainLossCashFlowHedgeIncludingNoncontrollingInterestMember2024-09-300001490906us-gaap:AccumulatedOtherComprehensiveIncomeMember2024-10-012025-03-31\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\n________________________\n\nForm 10-Q\n\n________________________\n\n(Mark One)\n\n☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)\n\nOF THE SECURITIES EXCHANGE ACT OF 1934\n\nFor the quarterly period ended March 31, 2026\n\nor\n\n☐  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)\n\nOF THE SECURITIES EXCHANGE ACT OF 1934\n\nFor the transition period from __ to __\n\nCommission File Number: 001-34814\n\nCapitol Federal Financial, Inc.\n\n(Exact name of registrant as specified in its charter)\n\nMaryland27-2631712\n\n(State or other jurisdiction of incorporation or organization)(I.R.S. Employer Identification No.)\n\n700 South Kansas Avenue,Topeka,Kansas66603\n\n(Address of principal executive offices)(Zip Code)\n\n(785) 235-1341\n\n(Registrant's telephone number, including area code)\n\n_____________________________________\n\n(Former name, former address and former fiscal year, if changed since last report)\n\nSecurities registered pursuant to Section 12(b) of the Act:\n\nTitle of each classTrading Symbol(s)Name of each exchange on which registered\n\nCommon Stock, par value $0.01 per shareCFFNThe NASDAQ Stock Market LLC\n\nIndicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐\n\nIndicate 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 ☒ No ☐\n\nIndicate 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.\n\nLarge accelerated filer ☒            Accelerated filer ☐        Non-accelerated filer ☐\n\nSmaller reporting company ☐        Emerging growth company ☐\n\nIf 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. ☐\n\nIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒\n\nAs of May 1, 2026, there were 126,769,827 shares of Capitol Federal Financial, Inc. common stock outstanding.\n\nPART I - FINANCIAL INFORMATIONPage Number"}