FORM 10-Q ☒QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the quarterly period ended June 30, 2026or☐TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from to Commission File Number 001-11302 Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Act of 1934during 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 filingrequirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 ofRegulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit suchfiles).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or anemerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growthcompany” in Rule 12b-2 of the Exchange Act. Large accelerated filer☒Acceleratedfiler☐Non-accelerated filerSmallerreportingcompany☐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 newor 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☒ Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date. KEYCORPTABLE OF CONTENTSPART I.FINANCIAL INFORMATION Item1.Financial StatementsConsolidated Balance SheetsConsolidated Statements of IncomeConsolidated Statements of Comprehensive IncomeConsolidated Statements of Changes in EquityConsolidated Statements of Cash FlowsNotes to Consolidated Financial Statements (Unaudited)Note 1.Basis of Presentation and Accounting PoliciesNote 2.Earnings Per Common ShareNote 3.Loan PortfolioNote 4.Asset QualityNote 5.Fair Value MeasurementsNote 6.SecuritiesNote 7.Derivatives and Hedging ActivitiesNote 8.Mortgage Servicing AssetsNote 9.LeasesNote 10.Variable Interest EntitiesNote 11.Income TaxesNote 12.Acquisitions&Discontinued OperationsNote 13.BorrowingsNote 14.Contingent Liabilities and GuaranteesNote 15.Accumulated Other Comprehensive IncomeNote 16.Shareholders’ EquityNote 17.Business Segment ReportingNote 18. Revenue from Contracts with CustomersReport of Independent Registered Public Accounting Firm (PCAOB ID: 42) Item 2.Management’s Discussion & Analysis of Financial Condition & Results of OperationsIntroductionTerminologyForward-looking statementsExecutive overviewBusiness outlookDemographicsSupervision and regulationResults of OperationsEarnings overviewNet interest incomeProvision for credit lossesNoninterest incomeNoninterest expenseIncome taxesBusiness Segment ResultsConsumer BankCommercial BankFinancial ConditionLoans and loans held for saleSecuritiesDeposits and other sources of fundsCapitalRisk ManagementOverviewMarket risk managementLiquidity risk managementCredit risk managementOperational and compliance risk managementGAAP to Non-GAAP ReconciliationsCritical Accounting Policies and EstimatesAccounting and Reporting DevelopmentsItem 3.Quantitative and Qualitative Disclosure about Market RiskItem 4.Controls and Procedures PART II. OTHER INFORMATION Item 1.Legal ProceedingsItem1A.Risk FactorsItem 2.Unregistered Sales of Equity Securities and Use of ProceedsItem 5.Other InformationItem 6.ExhibitsSignature PART I. FINANCIAL INFORMATION Management’s Discussion & Analysis of Financial Condition & Results of Operations Introduction This section reviews the financial condition and results of operations of KeyCorp and its subsidiaries for the quarterlyperiods ended June30, 2026, and June30, 2025. Some tables may include additional periods to comply with disclosurerequirements or to illustrate trends in greater depth. When you read this discussion, you should also refer to theconsolidated financial statements and related notes in this report. The page locations of specific sections and notes thatwe refer to are presented in the Table of Contents. References to our “2025 Form 10-K” refer to our Form 10-K for the year ended December31, 2025, which has been filedwith the SEC and is available on its website (www.sec.gov) and on our website (www.key.com/ir). Terminology Throughout this discussion, references to “Key,” “we,” “our,” “us,” and similar terms refer to the consolidated entityconsisting of KeyCorp and its subsidiaries. “KeyCorp” refers solely to the parent holding co