    <SEC-DOCUMENT>0000927089-20-000202-index.html : 20200327
    <SEC-HEADER>0000927089-20-000202.hdr.sgml : 20200327
    <ACCEPTANCE-DATETIME>20200327090250
    ACCESSION NUMBER:		0000927089-20-000202
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20200327
    DATE AS OF CHANGE:		20200327
    EFFECTIVENESS DATE:		20200327

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			GREAT SOUTHERN BANCORP, INC.
    		CENTRAL INDEX KEY:			0000854560
    		STANDARD INDUSTRIAL CLASSIFICATION:	STATE COMMERCIAL BANKS [6022]
    		IRS NUMBER:				431524856
    		STATE OF INCORPORATION:			MD
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-18082
    		FILM NUMBER:		20748242

    	BUSINESS ADDRESS:
    		STREET 1:		1451 E BATTLEFIELD
    		CITY:			SPRINGFIELD
    		STATE:			MO
    		ZIP:			65804
    		BUSINESS PHONE:		417-887-4400

    	MAIL ADDRESS:
    		STREET 1:		P O BOX 9009
    		CITY:			SPRINGFIELD
    		STATE:			MO
    		ZIP:			65808-9009

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	GREAT SOUTHERN BANCORP INC
    		DATE OF NAME CHANGE:	19920703
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>gs-defa14a2020.htm
    <DESCRIPTION>ADDITIONAL PROXY SOLICITATION MATERIAL
    <TEXT>
    Document 1 - file: gs-defa14a2020.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>gsdefa14a20201.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 2 - file: gsdefa14a20201.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>gsdefa14a20202.jpg
    <DESCRIPTION>IMAGE
    <TEXT>
    Document 3 - file: gsdefa14a20202.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>