Thomas J. Carlson reports 18,000 options; spouse holds 17,640 GSBC shares

Rhea-AI Filing Summary

Thomas J. Carlson, a director of Great Southern Bancorp (GSBC), reported a small open-market sale and a voluntary dividend reinvestment acquisition. The filing shows a disposition of 100 common shares and an acquisition of 116 common shares at $60.82 under a DRIP, with 17,640 shares reported as beneficially owned indirectly through his spouse.

The filing also discloses outstanding stock options covering 18,000 shares held directly by Mr. Carlson, with exercise prices ranging from $41.30 to $61.79 and exercisable on scheduled dates between 10/24/2026 and 11/20/2034. Vesting schedules for those awards are listed in the filing.

Insights

Financial Analyst

TL;DR: Routine insider activity: minor sale, small DRIP purchase, and a multi-year option position; no clear material signal.

The report shows a 100-share sale and a voluntary DRIP acquisition of 116 shares at $60.82, leaving 17,640 shares as indirectly held via spouse. Separately, Carlson holds 18,000 options exercisable over 2026–2034 with exercise prices from $41.30 to $61.79. These elements indicate ongoing compensation and ownership rather than a large, market-moving transaction. All figures and vesting dates are directly drawn from the filing.

Corporate Governance Expert

TL;DR: Disclosure is orderly and complete for reported transactions; option vesting schedule and indirect spouse ownership are clearly disclosed.

The Form 4 discloses an exempt DRIP acquisition (noted in the explanations) and reports indirect beneficial ownership through a spouse totaling 17,640 common shares. Table II provides a clear breakdown of option grants totaling 18,000 underlying shares with explicit exercise prices and exercisable dates. Documentation appears consistent with Section 16 reporting requirements as presented in the filing text.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

CARLSON THOMAS J

(Last) (First) (Middle)

CARE OF GREAT SOUTHERN BANK

218 S. GLENSTONE AVE

(Street)

SPRINGFIELD MO 65802

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GREAT SOUTHERN BANCORP, INC. [ GSBC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
07/15/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common stock								100	D
Common stock	07/15/2025		J(1)	V	116	A	$60.82	17,640	I	Spouse

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option to purchase	$41.3							(2)	10/24/2026	Common Stock	2,000		2,000	D
Option to purchase	$52.2							(3)	11/15/2027	Common Stock	2,000		4,000	D
Option to purchase	$55							(4)	11/28/2028	Common stock	2,000		6,000	D
Option to purchase	$60.15							(5)	11/20/2029	Common stock	2,000		8,000	D
Option to purchase	$41.74							(6)	10/26/2030	Common stock	2,000		10,000	D
Option to purchase	$57.98							(7)	11/17/2031	Common stock	2,000		12,000	D
Option to purchase	$61.55							(8)	11/16/2032	Common stock	2,000		14,000	D
Option to purchase	$53.22							(9)	11/15/2033	Common stock	2,000		16,000	D
Option to purchase	$61.79							(10)	11/20/2034	Common stock	2,000		18,000	D

Explanation of Responses:

1. DRIP acquisition exempt from Section 16 reporting being reported voluntarily

2. 500 shares vest on 10/24/2018, 10/24/2019, 10/24/2020 and 10/24/2021

3. 500 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022

4. 500 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023

5. 500 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024

6. 500 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025

7. 500 shares vest on 11/17/2023, 11/17/2024, 11/17/2025 and 11/17/2026

8. 500 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027

9. 500 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028

10. 500 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029

Remarks:

	Matt Snyder, by Power of Attorney from Thomas J. Carlson	08/13/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transactions did Thomas J. Carlson report on Form 4 for GSBC?

The filing reports a sale of 100 common shares and a voluntary DRIP acquisition of 116 common shares at $60.82.

How many GSBC shares does Thomas J. Carlson beneficially own according to the filing?

The filing lists 17,640 common shares as beneficially owned indirectly through his spouse.

What derivative holdings does the Form 4 show for GSBC director Thomas J. Carlson?

Table II discloses options covering 18,000 underlying shares with exercise prices from $41.30 to $61.79, exercisable between 10/24/2026 and 11/20/2034.

Was the DRIP acquisition on the Form 4 described as exempt from Section 16 reporting?

Yes. The filing explanation states the DRIP acquisition is exempt from Section 16 reporting and is being reported voluntarily.

Are the option vesting schedules provided in the filing?

Yes. The filing lists vesting schedules and past/future vesting dates for the option awards in the explanation section.