SEC Form 4 · accession 0001214659-26-010488
GREAT SOUTHERN BANCORP, INC. · GSBC
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Debra Mallonee Hart
Director
Period of report
Jul 14, 2026
Accepted (ET)
Aug 18, 2026 · 9:19 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000854560
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Jul 14, 2026 | J | 11 | $78.0111 | A | 2,024 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Option to purchaseF2 | $51.40 | holding | — | — | — | — | Mar 15, 2027 | Common Stock | 5,000 | 5,000 | D |
| Option to purchaseF3 | $52.20 | holding | — | — | — | — | Nov 15, 2027 | Common Stock | 2,000 | 7,000 | D |
| Option to purchaseF4 | $55.00 | holding | — | — | — | — | Nov 28, 2028 | Common stock | 2,000 | 9,000 | D |
| Option to purchaseF5 | $60.15 | holding | — | — | — | — | Nov 20, 2029 | Common stock | 2,000 | 11,000 | D |
| Option to purchaseF6 | $41.74 | holding | — | — | — | — | Oct 26, 2030 | Common stock | 2,000 | 13,000 | D |
| Option to purchaseF7 | $57.98 | holding | — | — | — | — | Nov 17, 2031 | Common stock | 2,000 | 15,000 | D |
| Option to purchaseF8 | $61.55 | holding | — | — | — | — | Nov 16, 2032 | Common stock | 2,000 | 17,000 | D |
| Option to purchaseF9 | $53.22 | holding | — | — | — | — | Nov 15, 2033 | Common stock | 2,000 | 19,000 | D |
| Option to purchaseF10 | $61.79 | holding | — | — | — | — | Nov 20, 2034 | Common stock | 2,000 | 21,000 | D |
| Option to purchaseF11 | $57.29 | holding | — | — | — | — | Nov 19, 2035 | Common stock | 2,000 | 23,000 | D |
Explanation of responses
- F1DRIP acquisition exempt from Section 16 reporting being reported voluntarily
- F10500 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029
- F11500 shares vest on 11/19/2027, 11/19/2028, 11/19/2029 and 11/19/2030
- F21,250 shares vest on 03/15/2019, 03/15/2020, 03/15/2021 and 03/15/2022
- F3500 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
- F4500 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
- F5500 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
- F6500 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025
- F7500 shares vest on 11/17/2023, 11/17/2024, 11/17/2025 and 11/17/2026
- F8500 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027
- F9500 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028