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) April 28, 2025 ​ Seaboard Corporation (Exact name of registrant as specified in its charter) ​ ​ ​ ​ ​ Delaware ​ 1-3390 ​ 04-2260388 (State or other jurisdiction of ​ (Commission ​ (I.R.S. Employer incorporation) ​ File Number) ​ Identification No.) ​ ​ ​ 9000 West 67th Street , Merriam , Kansas 66202 (Address of principal executive offices) (Zip Code) ​ ​ ​ Registrant’s telephone number including area code ( 913 ) 676-8928 ​ Not Applicable (Former name or former address, 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: ☐  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)) Securities registered pursuant to Section 12(b) of the Act: ​ ​ ​ Title of each class Trading Symbol(s) Name of each exchange on which registered Common Stock $1.00 Par Value SEB NYSE American 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 Seaboard Corporation (the “Company”) held its annual meeting of stockholders on April 28, 2025 in Overland Park, Kansas. Two items were submitted to a vote as described in the Company’s Proxy Statement filed March 7, 2025. The following briefly describes the proposals and results of the stockholders’ votes. ​ ​ ​ ​ Votes in Votes ​ Favor Withheld 1. Election of the following persons as directors: ​ ​ Ellen S. Bresky 807,067 88,554 David A. Adamsen 861,531 34,090 Douglas W. Baena 865,475 30,146 Paul M. Squires 812,285 83,336 Frances B. Shifman 882,353 13,268 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Votes in Votes Votes ​ Favor Against Abstaining ​ ​ ​ ​ 2. Ratification and approval of the selection of KPMG LLP 922,575 1,500 211 as independent auditors for 2025: ​ ​ ​ ​ ​ There were 28,665 broker non-votes with respect to the election of directors. There were 0 broker non-votes with respect to the selection of independent auditors. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2 ​ ​ SIGNATURE 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 thereunto duly authorized. ​ ​ ​ ​ ​ ​ ​ ​ Date: April 30, 2025 ​ ​ ​ ​ ​ ​ ​ ​ Seaboard Corporation ​ ​ ​ ​ (Registrant) ​ ​ ​ ​ ​ ​ ​ ​ By: /s/ David H. Rankin ​ ​ ​ ​ David H. Rankin Executive Vice President, Chief Financial Officer ​ ​ ​ ​ ​ (principal financial officer) ​ ​ ​ ​ ​ 3