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Form 8-K

sec.gov
GSBC The article is a Form 8-K filing, which is a report of unscheduled material events or corporate changes. It does not contain any sentiment-driving information about the company's performance or outlook.

8-K — GREAT SOUTHERN BANCORP, INC.

Accession: 0001171843-26-004174

Filed: 2026-06-17

Period: 2026-06-17

CIK: 0000854560

SIC: 6022 (STATE COMMERCIAL BANKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — f8k_061726.htm (Primary)

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Form 8-K

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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 17, 2026

_______________________________

GREAT SOUTHERN BANCORP, INC.

(Exact name of registrant as specified in its charter)

_______________________________

Maryland 0-18082 43-1524856

(State or Other Jurisdiction of Incorporation) (Commission File Number) (I.R.S. Employer Identification No.)

1451 East Battlefield

Springfield, Missouri 65804

(Address of Principal Executive Offices) (Zip Code)

(417) 887-4400

(Registrant's telephone number, including area code)

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, par value $0.01 per share GSBC The 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. ☐

Item 8.01. Other Events.

On June 17, 2026, Great Southern Bancorp, Inc., the holding company for Great Southern Bank, declared a $0.43 per common share dividend for the second quarter of the calendar year ending December 31, 2026.

A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits

99.1   Press Release dated June 17, 2026

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

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 hereunto duly authorized.

GREAT SOUTHERN BANCORP, INC.

Date: June 17, 2026 By:  /s/ Joseph W. Turner

Joseph W. Turner

President and Chief Executive Officer

EX-99.1 — PRESS RELEASE

EX-99.1

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EXHIBIT 99.1

Great Southern Bancorp, Inc. announces quarterly dividend of $0.43 per common share

SPRINGFIELD, Mo., June 17, 2026 (GLOBE NEWSWIRE) -- The Board of Directors of Great Southern Bancorp, Inc. (NASDAQ:GSBC), the holding company for Great Southern Bank, declared a $0.43 per common share dividend for the second quarter of the calendar year ending December 31, 2026.

The dividend will be payable on July 14, 2026, to stockholders of record on June 29, 2026. This dividend represents the 146th consecutive quarterly dividend paid by the Company to common stockholders.

About Great Southern Bank

Headquartered in Springfield, Missouri, Great Southern offers a broad range of banking services to customers. The Company operates 87 retail banking centers in Missouri, Iowa, Kansas, Minnesota, Arkansas and Nebraska and commercial lending offices in Atlanta, Charlotte, Chicago, Dallas, Denver, Omaha, and Phoenix. The common stock of Great Southern Bancorp, Inc. is listed on the Nasdaq Global Select Market under the symbol “GSBC.”

CONTACT:

Kincade Ayers,

Investor Relations,

(616) 233-0500

GSBC@lambert.com

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