Ownership Submission
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

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 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 *
MARRS DOUGLAS W
  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)
Secretary / Vice President of Subsidiary
(Last)
(First)
(Middle)
CARE OF GREAT SOUTHERN BANK, 218 S. GLENSTONE AVE
3. Date of Earliest Transaction (Month/Day/Year)
10/24/2017
(Street)

SPRINGFIELD 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 10/24/2017   M   625 A $ 32.59 2,531 D  
Common stock 10/24/2017   S   625 D $ 54.6795 1,906 D  

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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
Option to purchase $ 24.82               (1) 11/28/2022 Common stock 625   625 D  
Option to purchase $ 29.64               (2) 12/18/2023 Common stock 1,250   1,875 D  
Option to purchase $ 32.59 10/24/2017   M     625   (3) 10/15/2024 Common Stock 1,250 $ 32.59 3,125 D  
Option to purchase $ 50.71               (4) 11/18/2025 Common Stock 2,500   5,625 D  
Option to purchase $ 41.3               (5) 10/24/2026 Common Stock 2,500   8,125 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MARRS DOUGLAS W
CARE OF GREAT SOUTHERN BANK
218 S. GLENSTONE AVE
SPRINGFIELD 65802
      Secretary Vice President of Subsidiary

Signatures

 Matt Snyder, Attorney-in-fact for Douglas W. Marrs   10/25/2017
**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) 625 shares vest on 11/28/2017
(2) 625 shares vest on 12/18/2017 and 12/18/2018
(3) 625 Shares vest on 10/15/2017, 10/15/2018 and 10/15/2019
(4) 625 shares vest on 11/18/2017, 11/18/2018, 11/18/2019 and 11/18/2020
(5) 625 shares vest on 10/24/2018, 10/24/2019, 10/24/2020 and 10/24/2021

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