FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      
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 (MM/DD/YYYY)
8/4/2021
(Street)
SPRINGFIELD, MO 65802
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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  8/4/2021    M    1817  A $16.81  3607  D   
Common stock  8/4/2021    S    1817  D $51.9289  1790  D   
Common stock                 2590 (1) I  401(k) Plan 

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 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
Option to purchase  $16.81  8/4/2021    M        1817    (2) 9/26/2021  Common stock  1817  $16.81  0  D   
Option to purchase  $24.82                   (3) 11/28/2022  Common stock  1500    1500  D   
Option to purchase  $29.64                   (4) 12/18/2023  Common stock  1500    3000  D   
Common stock  $32.59                   (5) 10/15/2024  Common stock  1750    4750  D   
Common stock  $50.71                   (6) 11/18/2025  Common stock  1750    6500  D   
Common stock  $41.3                   (7) 10/24/2026  Common stock  2500    9000  D   
Option to purchase  $52.2                   (8) 11/15/2027  Common stock  2800    11800  D   
Option to purchase  $55                   (9) 11/28/2028  Common stock  3500    15300  D   
Option to purchase  $60.15                   (10) 11/20/2029  Common stock  3800    19100  D   
Option to purchase  $41.74                   (11) 10/26/2030  Common stock  4500    23600  D   

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)  1,817 shares vest on 09/26/2016
(3)  375 shares vest on 11/28/2014, 11/28/2015, 11/28/2016 and 11/28/2017
(4)  375 shares vest on 12/18/2015, 12/18/2016, 12/18/2017 and 12/18/2018
(5)  438 shares vest on 10/15/2016 and 10/15/2017, and 437 shares vest on 10/15/2018 and 10/15/2019
(6)  438 shares vest on 11/18/2017 and 11/18/2018, and 437 shares vest on 11/18/2019 and 11/18/2020
(7)  625 shares vest on 10/24/2018, 10/24/2019, 10/24/2020 and 10/24/2021
(8)  700 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
(9)  875 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
(10)  950 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
(11)  1,125 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025

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, Attorney-in-fact for John M. Bugh 8/5/2021
**Signature of Reporting Person Date
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