ANNUALREPORT Pursuant to Section15(d) ofthe Securities Exchange Act of 1934 For the fiscal year ended December 31, 2025 REQUIREDINFORMATION Because the Transamerica 401(k) Retirement Savings Plan (the“Plan”) is subject to ERISA, the Plan’s financial statements and schedules filed as partof this Annual Report have been prepared in accordance with the financial reporting requirements of ERISA. Report of Independent Registered Public Accounting Firm (Forvis Mazars, LLP)Statements of Net Assets Available for Benefits - December 31, 2025 and 2024Statement of Changes in Net Assets Available for Benefits - year ended December31, 2025Notes to Financial StatementsSchedule H, Line 4i - Schedule of Assets (Held at End of Year) Exhibit No.23.1 Consent of Independent Registered Public Accounting Firm (Forvis Mazars, LLP) FINANCIALSTATEMENTSANDSUPPLEMENTALSCHEDULE Transamerica 401(k) Retirement Savings PlanYear Ended December31, 2025With Report of Independent Registered Public Accounting Firm TRANSAMERICA 401(K) RETIREMENT SAVINGS PLANFINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULEYear Ended December31, 2025 Contents Report of Independent Registered Public Accounting Firm (Forvis Mazars, LLP)Statements of Net Assets Available for Benefits - December 31, 2025 and 2024Statement of Changes in Net Assets Available for Benefits - year ended December31, 2025Notes to Financial Statements Supplemental ScheduleSchedule H, Line 4i - Schedule of Assets (Held at End of Year) Other schedules required by Section2520.103-10 of the Department of Labor’s Rules and Regulations for Reporting and Disclosure under theEmployee Retirement Income Security Act of 1974 have been omitted because they are not applicable. REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM Trustees for the Transamerica Corporation Profit Sharing TrustTransamerica 401(k) Retirement Savings PlanCedar Rapids, Iowa Opinion on the Financial Statements We have audited the accompanying statements of net assets available for benefits of Transamerica 401(k) Retirement Savings Plan (the “Plan”) as ofDecember31, 2025 and 2024, the related statement of changes in net assets available for benefits for the year ended December31, 2025, and the relatednotes (collectively referred to as the “financial statements”). In our opinion, the financial statements referred to above present fairly, in all materialrespects, the net assets available for benefits of the Plan as of December31, 2025 and 2024, and the changes in net assets available for benefits for theyear ended December31, 2025 in conformity with accounting principles generally accepted in the United States of America. Basis of Opinion These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statementsbased on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to beindependent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities andExchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtainreasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Plan is not required tohave, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain anunderstanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internalcontrol over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, andperforming procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosuresin the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well asevaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion. Plan Administrator, Trustees and Plan ParticipantsTransamerica 401(k) Retirement Savings Plan Report on Supplemental Information The supplemental information in the accompanying schedule of assets (held at end of year) as of December31, 2025 has been subjected to auditprocedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental schedule is the responsibility of the Plan’smanagement. Our audit procedures included determining whether the supplemental schedule reconciles to the financial statements or the underly