FORM 11-K (Mark One)[]Annual Report Pursuant to Section 15(d) of the Securities Exchange Act of 1934For the fiscal year ended December 31, 2025 Commission file number 001-13253A. Full title of the plan and the address of the plan, if different from that of the issuer named below:RENASANT BANK 401(k) PLAN B. Name of issuer of the securities held pursuant to the plan and the address of its principal executive office:RENASANT CORPORATION 209 Troy StreetTupelo, MS 38804-4827 Renasant Bank 401(k) PlanForm 11-KFor the Years Ended December31, 2025 and 2024 CONTENTS Financial Statements Signatures All other schedules required by Section2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting andDisclosure under the Employee Retirement Income Security Act of 1974 have been omitted because they are not applicable. REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Audit Committee, Plan Administrator and ParticipantsRenasant Bank 401(k) PlanTupelo, MS Opinion on the Financial Statements We have audited the accompanying statements of net assets available for benefits of Renasant Bank 401(k) Plan (the “Plan”) as ofDecember 31, 2025 and 2024, the related statements of changes in net assets available for benefits for the years then ended, and therelated notes (collectively, the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, Basis for Opinion These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on the Plan’sfinancial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting OversightBoard (United States) (PCAOB) and are required to be independent with respect to the Plan in accordance with the U.S. federal We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the auditto obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part ofour audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing Our audits included performing procedures to assess the risk of material misstatement of the financial statements, whether due to erroror fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidenceregarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used Supplemental Information The supplemental information in the accompanying ERISA-required Supplemental Schedule H, line 4i- Schedule of Assets (Held atEnd of Year) as of December 31, 2025 has been subjected to audit procedures performed in conjunction with the audit of the Plan’sfinancial statements. The supplemental information is presented for the purpose of additional analysis and is not a required part of thefinancial statements but included supplemental information required by the Department of Labor’s Rules and Regulations forReporting and Disclosure under the Employee Retirement Income Security Act of 1974. The supplemental information is theresponsibility of the Plan’s management. Our audit procedures included determining whether the supplemental information reconciles /s/ BDO USA, P.C.(Formerly Horne LLP) We have served as the Plan’s auditor since 2005. Dallas, TexasJune24, 2026 Renasant Bank 401(k) PlanStatements of Net Assets Available for Benefits Renasant Bank 401(k) PlanNotes to Financial StatementsDecember31, 2025 and 2024 Note A – Description of Plan This description of the Renasant Bank 401(k) Plan (the “Plan”) is provided for general information purposes only. Participants shouldrefer to the Plan document for more complete information. General: The Plan is a defined contribution plan that includes a “safe harbor” arrangement within the meaning of Section 401(k)(13) ofthe Internal Revenue Code of 1986, as amended (the “Internal Revenue Code”), and is subject to the provisions of the EmployeeRetirement Income Security Act of 1974, as amended (“ERISA”). The Plan covers substantially all employees of Renasant Bank (the“Bank”) and its parent company, Renasant Corporation (the “Company”), as well as all employees of the Company’s wholly-owned The Board of Directors of the Company or its delegate may change the eligibility and other provisions of the Plan from time to time.The assets of the Plan are held with its fiduciary, the Bank (the “Trustee”). The recordkeeper for the Plan is Empower AnnuityInsurance Company. The Plan has been amended several times, including two amendments in 2025. The 2025 amendments provide that, effective January1, 2026, 1) automatic deferr