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  4. [Form 4] GREAT SOUTHERN BANCORP, INC. Insider Trading Activity

Great Southern Bancorp insider adds shares, holds 20,000 options

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Great Southern Bancorp (GSBC) director Thomas J. Carlson reported equity transactions in a Form 4. On 10/14/2025, an automatic dividend reinvestment plan (DRIP) purchase added 124 shares of common stock at $61.0699 per share, held indirectly through his spouse, bringing indirect beneficial ownership to 17,764 shares.

The filing also details stock options. On 11/19/2025, Carlson received options to purchase a total of 2,000 GSBC shares at an exercise price of $57.29 per share, split into four grants of 500 shares each, with exercisability beginning between 11/19/2027 and 11/19/2030 and expiring on 11/19/2035. Including earlier grants with exercise prices ranging from $41.30 to $61.79, he now directly holds options on 20,000 shares of GSBC common stock.

Positive

  • None.

Negative

  • None.
Insider CARLSON THOMAS J
Role Director
Type Security Shares Price Value
Grant/Award Option to purchase 500 $57.29 $29K
Grant/Award Option to purchase 500 $57.29 $29K
Grant/Award Option to purchase 500 $57.29 $29K
Grant/Award Option to purchase 500 $57.29 $29K
Other Common stock 124 $61.0699 $8K
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Option to purchase -- -- --
holding Common stock -- -- --
Holdings After Transaction: Option to purchase — 23,000 shares (Direct); Common stock — 17,764 shares (Indirect, Spouse); Common stock — 100 shares (Direct)
Footnotes (10)
  1. F1. DRIP acquisition exempt from Section 16 reporting being reported voluntarily
  2. F2. 500 shares vest on 10/24/2018, 10/24/2019, 10/24/2020 and 10/24/2021
  3. F3. 500 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
  4. F4. 500 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
  5. F5. 500 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
  6. F6. 500 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025
  7. F7. 500 shares vest on 11/17/2023, 11/17/2024, 11/17/2025 and 11/17/2026
  8. F8. 500 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027
  9. F9. 500 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028
  10. F10. 500 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
CARLSON THOMAS J
(Last) (First) (Middle)
CARE OF GREAT SOUTHERN BANK
218 S. GLENSTONE AVE
(Street)
SPRINGFIELD MO 65802
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
GREAT SOUTHERN BANCORP, INC. [ GSBC ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
10/14/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common stock 100 D
Common stock 10/14/2025 J(1) V 124 A $61.0699 17,764 I Spouse
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Option to purchase $57.29 11/19/2025 A 500 11/19/2027 11/19/2035 Common stock 500 $57.29 500 D
Option to purchase $57.29 11/19/2025 A 500 11/19/2028 11/19/2035 Common stock 500 $57.29 1,000 D
Option to purchase $57.29 11/19/2025 A 500 11/19/2029 11/19/2035 Common stock 500 $57.29 1,500 D
Option to purchase $57.29 11/19/2025 A 500 11/19/2030 11/19/2035 Common stock 500 $57.29 2,000 D
Option to purchase $41.3 (2) 10/24/2026 Common Stock 2,000 4,000 D
Option to purchase $52.2 (3) 11/15/2027 Common Stock 2,000 6,000 D
Option to purchase $55 (4) 11/28/2028 Common stock 2,000 8,000 D
Option to purchase $60.15 (5) 11/20/2029 Common stock 2,000 10,000 D
Option to purchase $41.74 (6) 10/26/2030 Common stock 2,000 12,000 D
Option to purchase $57.98 (7) 11/17/2031 Common stock 2,000 14,000 D
Option to purchase $61.55 (8) 11/16/2032 Common stock 2,000 16,000 D
Option to purchase $53.22 (9) 11/15/2033 Common stock 2,000 18,000 D
Option to purchase $61.79 (10) 11/20/2034 Common stock 2,000 20,000 D
Explanation of Responses:
1. DRIP acquisition exempt from Section 16 reporting being reported voluntarily
2. 500 shares vest on 10/24/2018, 10/24/2019, 10/24/2020 and 10/24/2021
3. 500 shares vest on 11/15/2019, 11/15/2020, 11/15/2021 and 11/15/2022
4. 500 shares vest on 11/28/2020, 11/28/2021, 11/28/2022 and 11/28/2023
5. 500 shares vest on 11/20/2021, 11/20/2022, 11/20/2023 and 11/20/2024
6. 500 shares vest on 10/26/2022, 10/26/2023, 10/26/2024 and 10/26/2025
7. 500 shares vest on 11/17/2023, 11/17/2024, 11/17/2025 and 11/17/2026
8. 500 shares vest on 11/16/2024, 11/16/2025, 11/16/2026 and 11/16/2027
9. 500 shares vest on 11/15/2025, 11/15/2026, 11/15/2027 and 11/15/2028
10. 500 shares vest on 11/20/2026, 11/20/2027, 11/20/2028 and 11/20/2029
Remarks:
Matt Snyder, by Power of Attorney from Thomas J. Carlson 11/20/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR