Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Bugh John M 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) _____ Other (specify below) Vice President of Subsidiary (Last) (First) (Middle) CARE OF GREAT SOUTHERN BANK, 218 S. GLENSTONE AVE 3. Date of Earliest Transaction (Month/Day/Year) 04/20/2026 (Street) SPRINGFIELD, MO 65802 4. If Amendment, Date 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 (City) (State) (Zip) 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 04/20/2026 M 2,500 A $41.30 4,290 D Common stock 04/20/2026 S 2,500 D $67.59 1,790 D Common stock 4,806(1) I 401(k) Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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
Common stock	$41.30	04/20/2026		M			2,500	(2)	10/24/2026	Common stock	2,500	$41.30	0	D
Option to purchase	$52.20							(3)	11/15/2027	Common stock	2,800		2,800	D
Option to purchase	$55							(4)	11/28/2028	Common stock	3,500		6,300	D
Option to purchase	$60.15							(5)	11/20/2029	Common stock	3,800		10,100	D
Option to purchase	$41.74							(6)	10/26/2030	Common stock	4,500		14,600	D
Option to purchase	$57.98							(7)	11/17/2031	Common stock	4,750		19,350	D
Option to purchase	$61.55							(8)	11/16/2032	Common stock	4,800		24,150	D
Option to purchase	$53.22							(9)	11/15/2033	Common stock	4,800		28,950	D
Option to purchase	$61.79							(10)	11/20/2034	Common stock	4,800		33,750	D
Option to purchase	$57.29							(11)	11/19/2035	Common stock	4,800		38,550	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Bugh John M CARE OF GREAT SOUTHERN BANK 218 S. GLENSTONE AVE SPRINGFIELD, MO 65802				Vice President of Subsidiary

Signatures

Matt Snyder, by Power of Attorney from John M. Bugh		04/21/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Reflects reporting person's holdings of units in Issuer's common stock fund under Issuer's 401(k) plan. Number of shares shown as beneficially owned under the plan represents the approximate equivalent number of shares of Issuer's common stock.
(2)	625 shares vest on 10/24/2018, 10/24/2019, 10/24/2020 and 10/24/2021
(3)	700 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
(4)	875 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
(5)	950 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
(6)	1,125 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025
(7)	1,188 shares vest on 11/17/2023 and 11/17/2024 and 1,187 shares vest on 11/17/2025 and 11/17/2026
(8)	1,200 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027
(9)	1,200 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028
(10)	1,200 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029
(11)	1,200 shares vest on 11/19/2027, 11/19/2028, 11/19/2029 and 11/19/2030

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