# EDGAR Filing Document

**Accession Number:** 0000854560
**File Stem:** 0001174947-23-000456
**Filing Date:** 2023-3
**Character Count:** 2006
**Document Hash:** 9155c3537b5cbde47d7a20e7d5d71d7b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001174947-23-000456.hdr.sgml**: 20230331

**ACCESSION NUMBER**: 0001174947-23-000456

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20230331

**DATE AS OF CHANGE**: 20230331

**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:** 23783944

**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

**united states**

**securities and exchange commission**

**Washington, D.C. 20549**

**SCHEDULE 14A INFORMATION**

**Proxy Statement Pursuant to Section 14(a) of <br> the Securities Exchange Act of 1934**

**(Amendment No.)**

Filed by the Registrant ☒

Filed by a party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☐ Definitive Proxy Statement

☒ Definitive
 Additional Materials

☐ Soliciting Material under §240.14a-12

**GREAT SOUTHERN BANCORP, INC.**

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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