GREAT SOUTHERN BANCORP, INC. 10-Q

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds In April 2025, the Company’s Board of Directors authorized management to repurchase up to 1,000,000 shares of the Company’s outstanding common stock, under a program of open market purchases or privately negotiated transactions. This program does not have an expiration date. The authorization of this program became effective in August 2025, upon completion of the Company’s previously authorized repurchase program. From time to time, the Company may utilize a pre-arranged trading plan pursuant to Rule 10b5-1 under the Securities Exchange Act of 1934 to repurchase its shares under its repurchase programs. The following table reflects the Company’s repurchase activity during the three months ended June 30, 2026. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Total Number of ​ ​ ​ Maximum Number ​ ​ Total Number ​ Average ​ Shares Purchased ​ of Shares that May ​ ​ of Shares ​ Price ​ as Part of Publicly ​ Yet Be Purchased ​ ​ Purchased ​ Per Share ​ Announced Plan ​ Under the Plan(1) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ April 1, 2026 – April 30, 2026 ​ 41,400 ​ $ 65.97 ​ 41,400 ​ 377,406 May 1, 2026 – May 31, 2026 ​ 63,853 ​ ​ 69.51 ​ 63,853 ​ 313,553 June 1, 2026 – June 30, 2026 ​ 9,371 ​ ​ 71.44 ​ 9,371 ​ 304,182 ​ ​ 114,624 ​ $ 68.39 ​ 114,624 ​ ​ (1) Amount represents the number of shares available to be repurchased as of the last calendar day of the month shown. ​ 68 ​ Item 3. Defaults Upon Senior Securities None. Item 4. Mine Safety Disclosures Not applicable