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SOUTHERN MISSOURI BANCORP, INC.

For the period ended Nov 25, 2025. Filed Nov 25, 2025.

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A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

Nov 25, 2025 · Filed Nov 25, 2025

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SMBC$70.46-0.3%Stored close · as of Nov 6, 2026
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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) November 25, 2025

SOUTHERN MISSOURI BANCORP, INC.

(Exact name of registrant as specified in its charter)

Missouri000-2340643-1665523
(State or other(Commission File No.)(IRS Employer
jurisdiction of incorporation)Identification Number)
2991 Oak Grove Road, Poplar Bluff, Missouri63901
(Address of principal executive offices)(Zip Code)

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:

☐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 classTrading Symbol(s)Name of each exchange on which registered
Common Stock, par value $0.01 per shareSMBCThe NASDAQ Stock Market LLC

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.☐

On November 25, 2025, the Board of Directors (the “Board”) of Southern Missouri Bancorp, Inc. (“Southern Missouri” or the “Company”) approved and adopted Amended and Restated Bylaws of the Company (as so amended and restated, the “Bylaws”), that became immediately effective. The amendments to the Bylaws include:

Revising the address of the home office

Changing the meeting day of the

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