GSBC insider granted 4,800 new stock options at $57.29 strike

Rhea-AI Filing Summary

Great Southern Bancorp, Inc. (GSBC) reported a Form 4 for a vice president of a subsidiary detailing new stock option grants. On 11/19/2025, the insider was granted four "option to purchase" awards, each covering 1,200 shares of common stock at an exercise price of $57.29 per share. These new options become exercisable on 11/19/2027, 11/19/2028, 11/19/2029, and 11/19/2030, and all expire on 11/19/2035. After these transactions, the insider directly beneficially owns 20,624 derivative securities (stock options) tied to GSBC common stock, reflecting both the new grants and prior option awards with vesting schedules extending through 2029 and expirations between 2030 and 2035.

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^*

Maples Mark A

(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)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Vice President of Subsidiary

3. Date of Earliest Transaction (Month/Day/Year)
11/19/2025

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								0	D

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	$57.29	11/19/2025		A		1,200		11/19/2027	11/19/2035	Common stock	1,200	$57.29	1,200	D
Option to purchase	$57.29	11/19/2025		A		1,200		11/19/2028	11/19/2035	Common stock	1,200	$57.29	2,400	D
Option to purchase	$57.29	11/19/2025		A		1,200		11/19/2029	11/19/2035	Common stock	1,200	$57.29	3,600	D
Option to purchase	$57.29	11/19/2025		A		1,200		11/19/2030	11/19/2035	Common stock	1,200	$57.29	4,800	D
Option to purchase	$41.74							(1)	10/26/2030	Common stock	250		5,050	D
Option to purchase	$57.98							(2)	11/17/2031	Common stock	2,374		7,424	D
Option to purchase	$61.55							(3)	11/16/2032	Common stock	3,600		11,024	D
Option to purchase	$53.22							(4)	11/15/2033	Common stock	4,800		15,824	D
Option to purchase	$61.79							(5)	11/20/2034	Common stock	4,800		20,624	D

Explanation of Responses:

1. 250 shares vest on 10/26/2025

2. 1,187 shares vest on 11/17/2025 and 11/17/2026

3. 1,200 shares vest on 11/16/2025, 11/16/2026 and 11/16/2027

4. 1,200 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028

5. 1,200 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029

Remarks:

	Matt Snyder, by Power of Attorney from Mark A Maples	11/20/2025
	** 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.
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.

FAQ

What insider transaction did GSBC report on this Form 4?

The filing reports that a vice president of a Great Southern Bancorp subsidiary received multiple grants of stock options to purchase GSBC common stock, all reported as directly owned derivative securities.

How many new GSBC stock options were granted to the insider?

The insider received four new option grants, each labeled "option to purchase" and covering 1,200 shares of GSBC common stock, for a total of 4,800 new options granted on 11/19/2025.

What is the exercise price and term of the new GSBC options?

Each new option grant has an exercise price of $57.29 per share. They become exercisable on 11/19/2027, 11/19/2028, 11/19/2029, and 11/19/2030, and all have an expiration date of 11/19/2035.

How many GSBC derivative securities does the insider own after these grants?

Following the reported transactions, the insider directly beneficially owns 20,624 derivative securities, all described as options to purchase GSBC common stock, including both new and previously granted options.

What are some key vesting dates for the GSBC options listed?

The explanation notes that 250 shares vest on 10/26/2025, 1,187 shares vest on both 11/17/2025 and 11/17/2026, 1,200 shares vest annually on 11/16/2025–2027, and another 1,200 shares vest annually on 11/15/2025–2028 and on 11/20/2026–2029.

Is this GSBC Form 4 filed for one or multiple reporting persons?

The filing is indicated as a Form filed by one reporting person, covering the transactions of a single insider affiliated with Great Southern Bancorp, Inc.