Shareholder Vote

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 3, 2026 Commission File Number 1-15202       W. R. BERKLEY CORP ORATION      (Exact name of registrant as specified in its charter) Delaware 22-1867895 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.)     475 Steamboat Road Greenwich Connecticut 06830 (Address of principal executive offices) (Zip Code) (203) 629-3000 (Registrant’s telephone number, including area code) None Former name, former address and former fiscal year, if changed since last report . Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions ( see General Instruction A.2. below): ☐     Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Title of Each Class   Trading Symbol   Name of Each Exchange on Which Registered Common Stock, par value $.20 per share   WRB   New York Stock Exchange 5.700% Subordinated Debentures due 2058   WRB-PE   New York Stock Exchange 5.100% Subordinated Debentures due 2059 WRB-PF New York Stock Exchange 4.250% Subordinated Debentures due 2060 WRB-PG New York Stock Exchange 4.125% Subordinated Debentures due 2061 WRB-PH New York Stock Exchange           Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).    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.      ☐                Item 5.07 Submission of Matters to a Vote of Security Holders. W. R. Berkley Corporation (the “Company”) held its Annual Meeting of Stockholders on June 3, 2026. The meeting involved: (i) the election of five directors for terms to expire (a) in the case of nominees María Luisa Ferré, Daniel L. Mosley and Robert A. Rusbuldt, at the Company’s Annual Meeting of Stockholders to be held in 2029, (b) in the case of nominee W. Robert Berkley, Jr., at the Company’s Annual Meeting of Stockholders to be held in 2028, and (c) in the case of nominee Andrew J. Carrier, at the Annual Meeting of Stockholders to be held in 2027, and in each case until their respective successors are duly elected and qualified, unless sooner displaced; (ii) a resolution approving, on a non-binding advisory basis, the compensation of the Company’s named executive officers as disclosed in the Company’s proxy statement for the 2026 Annual Meeting of Stockholders pursuant to the compensation disclosure rules of the Securities and Exchange Commission, or the “say-on-pay” vote; and (iii) the ratification of the appointment of KPMG LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026. The directors elected and the final voting results are as follows: (i)    Election of Directors: Nominee For Against Abstain Broker Non Votes W. Robert Berkley, Jr. 344,315,966  3,079,856  87,942 21,517,695 Andrew J. Carrier 343,501,667  3,777,847  204,250 21,517,695 María Luisa Ferré 327,089,743  20,132,498  261,523 21,517,695 Daniel L. Mosley 339,778,102  7,332,001  373,661 21,517,695 Robert A. Rusbuldt 340,428,581  6,380,145  675,038 21,517,695 (ii)    Non-Binding Advisory Vote on the Compensation of the Company’s Named Executive Officers (“Say-on-Pay” Vote): For Against Abstain Broker Non Votes 339,651,297 5,149,752 2,682,715 21,517,695 (iii)    Ratification of the Appointment of KPMG LLP: For Against Abstain 355,949,139 12,941,192 111,128           SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. W. R. BERKLEY CORPORATION By: /s/ Richard M. Baio Name: Richard M. Baio Title: Executive Vice President- Chief Financial Officer Date: June 5, 2026