SEC Form 4
FORM 4UNITED 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
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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*
Baker Kevin L

(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)
Director10% Owner
Officer (give title below)XOther (specify below)
Vice President of Subsidiary
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock05/06/2026M2,800A$52.22,814D
Common Stock05/06/2026S2,800D$69.960114D
Common Stock9,768(1)I401(k) Plan
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Option to purchase$52.205/06/2026M2,800 (2)11/15/2027Common stock2,800$52.20D
Option to purchase$55 (3)11/28/2028Common Stock3,5003,500D
Option to purchase$60.15 (4)11/20/2029Common stock3,8007,300D
Option to purchase$41.74 (5)10/26/2030Common stock4,50011,800D
Option to purchase$57.98 (6)11/17/2031Common stock4,75016,550D
Option to purchase$61.55 (7)11/16/2032Common stock4,80021,350D
Option to purchase$53.22 (8)11/15/2033Common stock4,80026,150D
Option to purchase$61.79 (9)11/20/2034Common stock4,80030,950D
Option to purchase$57.29 (10)11/19/2035Common stock4,80035,750D
Explanation of Responses:
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. 700 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
3. 875 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
4. 950 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
5. 1,125 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025
6. 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
7. 1,200 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027
8. 1,200 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028
9. 1,200 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029
10. 1,200 shares vest on 11/19/2027, 11/19/2028, 11/19/2029 and 11/19/2030
Remarks:
Matt Snyder, by Power of Attorney from Kevin L. Baker05/06/2026
** Signature of Reporting PersonDate
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)