Executive Change · 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 24, 2023 ​ 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 5.02  Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers On April 24, 2023, Seaboard Corporation (the “Company”) promoted Barbara M. Smith, age 42, who has been serving, on an interim basis, as the Company’s Corporate Controller and Principal Accounting Officer since March 2023, to the position of the Company’s Vice President, Corporate Controller and Principal Accounting Officer, with such appointment being effective immediately. Ms. Smith previously served as the Company’s Corporate Assistant Controller from May 2015 to March 2023. Ms. Smith is a licensed certified public accountant. Item 5.07 Submission of Matters to a Vote of Security Holders The Company held its annual meeting of stockholders on April 24, 2023 in Overland Park, Kansas. Four items were submitted to a vote as described in the Company’s Proxy Statement filed March 10, 2023. 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    992,137 121,596 David A. Adamsen 1,045,336   68,397 Douglas W. Baena 1,018,895   94,838 Paul M. Squires    992,973 120,760 Frances B. Shifman 1,047,765   65,968 ​ ​ ​ ​ ​ ​ Votes in Votes Votes ​ Favor Against Abstaining ​ ​ ​ ​ 2. Vote to approve the compensation, on an advisory basis, 1,055,630 57,170 933 of the Named Executive Officers, as disclosed in the proxy ​ ​ ​ statement for the 2023 Annual Meeting of Stockholders: ​ ​ ​ ​ ​ ​ ​ ​ ​ 1 year 2 years 3 years Votes ​ ​ Abstaining ​ ​ ​ ​ ​ 3. Vote to determine the frequency, on an advisory basis, of the 158,966 282 954,042 443 stockholder advisory votes to approve the compensation of ​ ​ ​ ​ the Named Executive Officers: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Votes in Votes Votes ​ Favor Against Abstaining ​ ​ ​ ​ 4. Ratification and approval of the selection of KPMG LLP 1,129,856 2,014 359 as independent auditors for 2023: ​ ​ ​ ​ ​ There were 18,496 broker non-votes with respect to the election of directors and the vote to approve the compensation and the frequency of stockholder advisory votes on compensation. 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 27, 2023 ​ ​ ​ ​ ​ ​ ​ ​ Seaboard Corporation ​ ​ ​ ​ (Registrant) ​ ​ ​ ​ ​ ​ ​ ​ By: /s/ Robert L. Steer ​ ​ ​ ​ Robert L. Steer President and Chief Executive Officer ​ ​ ​ ​ ​ ​ ​ ​ ​ (principal executive officer) ​ ​ ​ ​ ​ 3