GSBC Form 144: Notice of 6,000-Share Option Exercises

GSBC files a Form 144 reporting intended dispositions of common stock tied to stock option exercises.

Rhea-AI Filing Summary

GSBC files a Form 144 reporting intended dispositions of common stock tied to stock option exercises. The notice lists 6,000 shares in total and four separate Stock Option Exercise entries of 1,500 shares each, all dated 05/18/2026, with cash as the consideration.

Insights

Securities Compliance Counsel

Form 144 notifies regulators of planned sales from option exercises on 05/18/2026.

The filing lists four Stock Option Exercise entries of 1,500 shares each and a total figure of 6,000 shares in the header. Each entry is dated 05/18/2026 and shows Cash as the consideration.

These notices are procedural: they inform the market and provide a record of intended dispositions under the applicable resale rule. Subsequent transaction-level Forms 4 or broker reports will show completed sales and actual cash proceeds.

Key Figures

Form type: Form 144 Total shares listed: 6,000 shares Per-entry shares: 1,500 shares +2 more

5 metrics

Form type Form 144 Rule 144 notice of proposed resale

Total shares listed 6,000 shares Header shows 6,000 (four entries of 1,500 each) dated 05/18/2026

Per-entry shares 1,500 shares Each of four 'Stock Option Exercise' entries dated 05/18/2026

Transaction date 05/18/2026 Date attached to each listed exercise entry

Consideration type Cash Consideration listed for each stock option exercise entry

Key Terms

Form 144, Stock Option Exercise, Cash, Securities To Be Sold

4 terms

Form 144 regulatory

"Filer Information | 144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Option Exercise financial

"Common | 05/18/2026 | Stock Option Exercise | Issuer"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

Cash financial

"1500 | 05/18/2026 | Cash"

Securities To Be Sold regulatory

"144: Securities To Be Sold"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does GSBC's Form 144 report?

The filing reports intended dispositions of common stock from stock option exercises totaling 6,000 shares and four entries of 1,500 shares each dated 05/18/2026.

Does Form 144 mean the shares were sold for GSBC?

Form 144 notifies the SEC of proposed resales; it does not by itself confirm completed sales. The filing lists Cash as the consideration method for the listed Stock Option Exercise entries.

When were the stock option exercises reported in GSBC's Form 144?

The entries are dated 05/18/2026. The document shows four identical dated entries of 1,500 shares each and a header total of 6,000 shares.

Will GSBC receive proceeds from these transactions?

The filing indicates Cash as the consideration type for the listed exercises. Who receives proceeds is not specified beyond the labeled consideration method in the excerpt.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/18/2026 - 06:28 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001044043
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	GREAT SOUTHERN BANCORP, INC.
SEC File Number	000-18082
Address of Issuer	1451 East Battlefield, Springfield, MISSOURI 65804
Phone	(417) 887-4400
Name of Person for Whose Account the Securities are To Be Sold	WILLIAM TURNER
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	6000	410103.60	10893203	05/18/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/18/2026	Stock Option Exercise	Issuer			1500	05/18/2026	Cash
Common	05/18/2026	Stock Option Exercise	Issuer			1500	05/18/2026	Cash
Common	05/18/2026	Stock Option Exercise	Issuer			1500	05/18/2026	Cash
Common	05/18/2026	Stock Option Exercise	Issuer			1500	05/18/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	05/18/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ William V Turner
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)