SOUTHERN MISSOURI BANCORP, INC.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

**FORM8-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) March 27, 2025

SOUTHERN MISSOURI BANCORP, INC.

(Exact name of registrant as specified in its charter)

Registrant's telephone number, including area code: (573)778-1800

N/A

(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:

Securities registered pursuant to Section 12(b) of the Act:

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.☐

(c)On March 31, 2025, the Board of Directors of Southern Missouri Bancorp, Inc. (the “Company”), the parent holding company for Southern Bank (the “Bank”), announced an update to its executive leadership team.

Justin G. Cox, age 44, currently serving as an Executive Vice President and Regional President of the Company and the Bank, is being promoted to the position of Executive Vice President and Chief Banking Officer of the Company and the Bank. These changes will be effective May 1, 2025. Mr. Cox joined the Bank in 2010 as a lending officer and became Regional President of the Company and the Bank in January 2017.

There are no arrangements or understandings between Mr. Cox and any other person required to be disclosed pursuant to Item 401(b) of Regulation S-K. Mr. Cox has no family relationships required to be disclosed pursuant to Item 401(d) of Regulation S-K and has no direct or indirect material interest in any transaction required to be disclosed pursuant to Item 404(a) of Regulation S-K.

A copy of the press release issued by the Company on March 31, 2025, announcing the update to its executive leadership team is attached as Exhibit 99.1 to this report and is incorporated herein by reference.

(d)Exhibits

The following exhibits are filed herewith:

Exhibit No. Exhibit

104 Cover Page Interactive Data File (embedded within the Inline XBRL documents).

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.