GREAT SOUTHERN BANCORP, INC.

Pursuant to General Instruction G(3) of Form 10-K and the instruction to Item 401 of Regulation S-K, the following information is furnished in lieu of being included in the Registrant’s definitive proxy statement.

The following information as to the business experience during the past five years is supplied with respect to executive officers of the Company and its subsidiaries who are not directors of the Company. There are no arrangements or understandings between the persons named and any other person pursuant to which such officers were selected. The executive officers are elected annually and serve at the discretion of the respective Boards of Directors of the Company and its subsidiaries. Unless specifically indicated, each individual has held his current position for at least five years.

Kevin L Baker. Mr. Baker, age 58, is Vice President and Chief Credit Officer of the Bank. He joined the Bank in 2005 and is responsible for the overall credit approval process, the commercial and consumer loan collection process and the loan documentation and servicing processes. Prior to joining the Bank, Mr. Baker was a lending officer at another commercial bank.

John M. Bugh. Mr. Bugh, age 58, is Vice President and Chief Lending Officer of the Bank. He joined the Bank in 2011 and is in charge of all loan production for the Bank, including commercial, residential and consumer loans. Prior to joining the Bank, Mr. Bugh was a lending officer at other commercial banks and was an examiner for the FDIC.

Rex A. Copeland. Mr. Copeland, age 61, is Treasurer of the Company and Senior Vice President and Chief Financial Officer of the Bank. He joined the Bank in 2000 and is responsible for the financial functions of the Company, including the internal and external financial reporting of the Company and its subsidiaries. Mr. Copeland previously practiced as a Certified Public Accountant. Prior to joining the Bank, Mr. Copeland served other financial services companies in the areas of corporate accounting, internal audit and independent public accounting.

Mark A. Maples. Mr. Maples, age 62, is Assistant Secretary of the Company, Vice President and Chief Operations Officer of the Bank, Bank Secrecy Act Officer. He joined the Bank in 2005 and is responsible for all operations functions of the Bank. Prior to assuming his current responsibilities in 2021, Mr. Maples most recently served as the Managing Director of BSA and Loss Prevention of the Bank since 2006. Prior to joining the Bank, Mr. Maples, who has been in the banking industry since 1982, held leadership roles at other commercial financial institutions with experience in retail, data/item processing, compliance/risk management and deposit operations.

PART II