Great Southern director buys 96 DRIP shares

Q: What insider transaction did GSBC director Thomas J. Carlson report on July 14, 2026?

Thomas J. Carlson reported an other acquisition of 96 GSBC common shares on 2026-07-14 at $77.84 per share. The transaction is noted as a DRIP acquisition and is held indirectly through his spouse.

Q: What GSBC stock options are reported for Thomas J. Carlson in this Form 4?

Carlson is shown holding several options to purchase 2,000 GSBC shares each, with exercise prices between $41.74 and $61.79. The options have expiration dates ranging from 2027-11-15 through 2035-11-19.

Q: What does the DRIP acquisition note mean in Thomas J. Carlson’s GSBC Form 4?

A footnote states the 96-share transaction is a “DRIP acquisition exempt from Section 16 reporting being reported voluntarily.” This means the dividend reinvestment-related purchase was not required but was disclosed voluntarily.

GREAT SOUTHERN BANCORP, INC. director Thomas J. Carlson reported an other acquisition of 96 shares of common stock on 2026-07-14 at $77.84 per share, noted as a DRIP acquisition for his spouse and held indirectly.

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Form Type

Rhea-AI Filing Summary

GREAT SOUTHERN BANCORP, INC. director Thomas J. Carlson reported an other acquisition of 96 shares of common stock on 2026-07-14 at $77.84 per share, noted as a DRIP acquisition for his spouse and held indirectly. Following this transaction, indirect common stock holdings reported for the spouse-related account were 17,411 shares, and Carlson also reported 100 shares of common stock held directly. The filing also lists several outstanding stock options held directly, each covering 2,000 underlying common shares at exercise prices between $41.74 and $61.79, with expiration dates from 2027 through 2035.

Insider Trade Summary

Other: 96 shares

Other 11 txns

Insider CARLSON THOMAS J

Role Director

Type	Security	Shares	Price	Value
Other	Common stock ^F1	96	$77.84	$7K
holding	Option to purchase ^F2	--	--	--
holding	Option to purchase ^F3	--	--	--
holding	Option to purchase ^F4	--	--	--
holding	Option to purchase ^F5	--	--	--
holding	Option to purchase ^F6	--	--	--
holding	Option to purchase ^F7	--	--	--
holding	Option to purchase ^F8	--	--	--
holding	Option to purchase ^F9	--	--	--
holding	Option to purchase ^F10	--	--	--
holding	Common stock	--	--	--

Holdings After Transaction: Common stock — 17,411 shares (Indirect, Spouse); Option to purchase — 18,000 contracts (Direct); Common stock — 100 shares (Direct)

Footnotes (10)

F1. DRIP acquisition exempt from Section 16 reporting being reported voluntarily
F2. 500 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
F3. 500 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
F4. 500 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
F5. 500 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025
F6. 500 shares vest on 11/17/2023, 11/17/2024, 11/17/2025 and 11/17/2026
F7. 500 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027
F8. 500 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028
F9. 500 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029
F10. 500 shares vest on 11/19/2027, 11/19/2028, 11/19/2029 and 11/19/2030

Key Figures

DRIP acquisition shares: 96 shares DRIP acquisition price: $77.84 per share Indirect common stock holdings: 17,411 shares +5 more

8 metrics

DRIP acquisition shares 96 shares Other acquisition of GSBC common stock on 2026-07-14

DRIP acquisition price $77.84 per share Price for 96 GSBC common shares acquired on 2026-07-14

Indirect common stock holdings 17,411 shares GSBC common shares held indirectly through spouse after transaction

Direct common stock holdings 100 shares GSBC common shares held directly by Thomas J. Carlson

Option exercise price $52.20 Option to purchase 2,000 GSBC shares expiring 2027-11-15

Option exercise price $41.74 Option to purchase 2,000 GSBC shares expiring 2030-10-26

Option exercise price $61.79 Option to purchase 2,000 GSBC shares expiring 2034-11-20

Underlying shares per option grant 2,000 shares Each listed option to purchase GSBC common stock

Key Terms

DRIP acquisition, Section 16, Option to purchase, vesting

4 terms

DRIP acquisition financial

"DRIP acquisition exempt from Section 16 reporting being reported voluntarily"

Section 16 regulatory

"DRIP acquisition exempt from Section 16 reporting being reported voluntarily"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

Option to purchase financial

"security_title: Option to purchase, underlying security common stock"

vesting financial

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

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

FAQ

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

What insider transaction did GSBC director Thomas J. Carlson report on July 14, 2026?

Thomas J. Carlson reported an other acquisition of 96 GSBC common shares on 2026-07-14 at $77.84 per share. The transaction is noted as a DRIP acquisition and is held indirectly through his spouse.

How many GSBC shares does Thomas J. Carlson hold indirectly after this Form 4 filing?

After the reported transaction, the spouse-related account holds 17,411 GSBC common shares indirectly attributed to Thomas J. Carlson. This reflects the position following the 96-share DRIP acquisition reported on 2026-07-14.

Does Thomas J. Carlson hold GSBC common stock directly as of this filing?

Yes. The Form 4 reports that Thomas J. Carlson directly holds 100 GSBC common shares. This direct position is separate from the 17,411 shares reported as indirectly held through his spouse’s account.

What GSBC stock options are reported for Thomas J. Carlson in this Form 4?

Carlson is shown holding several options to purchase 2,000 GSBC shares each, with exercise prices between $41.74 and $61.79. The options have expiration dates ranging from 2027-11-15 through 2035-11-19.

What does the DRIP acquisition note mean in Thomas J. Carlson’s GSBC Form 4?

A footnote states the 96-share transaction is a “DRIP acquisition exempt from Section 16 reporting being reported voluntarily.” This means the dividend reinvestment-related purchase was not required but was disclosed voluntarily.

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

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Available on EDGAR 08/18/2026 - 09:27 AM Accepted by SEC EDGAR 08/18/2026 - 09:27 AM

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
Estimated average burden
hours per response:			0.5

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

MISSOURI

65802

(City)

(State)

(Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/14/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common stock								100	D
Common stock	07/14/2026		J⁽¹⁾	V	96	A	$77.84	17,411	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Option to purchase	$52.2							⁽²⁾	11/15/2027	Common Stock	2,000		2,000	D
Option to purchase	$55							⁽³⁾	11/28/2028	Common stock	2,000		4,000	D
Option to purchase	$60.15							⁽⁴⁾	11/20/2029	Common stock	2,000		6,000	D
Option to purchase	$41.74							⁽⁵⁾	10/26/2030	Common stock	2,000		8,000	D
Option to purchase	$57.98							⁽⁶⁾	11/17/2031	Common stock	2,000		10,000	D
Option to purchase	$61.55							⁽⁷⁾	11/16/2032	Common stock	2,000		12,000	D
Option to purchase	$53.22							⁽⁸⁾	11/15/2033	Common stock	2,000		14,000	D
Option to purchase	$61.79							⁽⁹⁾	11/20/2034	Common stock	2,000		16,000	D
Option to purchase	$57.29							⁽¹⁰⁾	11/19/2035	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 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022

3. 500 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023

4. 500 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024

5. 500 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025

6. 500 shares vest on 11/17/2023, 11/17/2024, 11/17/2025 and 11/17/2026

7. 500 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027

8. 500 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028

9. 500 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029

10. 500 shares vest on 11/19/2027, 11/19/2028, 11/19/2029 and 11/19/2030

Remarks:

	Matt Snyder, by Power of Attorney from Thomas J. Carlson	08/18/2026
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR