Exercise4

SOUTHERN MISSOURI BANCORP, INC.

Total Value

$429.9K

Filing Date

Jul 31, 2026

1 transactions

Trade Summary

On Jul 29, 2026, HECKER MARK E, Insider, reported $429.9K of SOUTHERN MISSOURI BANCORP, INC. (SMBC) across 1 transactions. The filing covers company securities and reflects balanced net activity of $0. Reported prices ranged from $34.35 to $78.31. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Insider Information

Name: HECKER MARK E
Role: Insider
Location: POPLAR BLUFF, MO

Filing Details

Filing Date: Jul 31, 2026
Transaction Date: Jul 29, 2026
Accession Number: 0001355433-26-000006
Form Type: 4

Non-Derivative Transactions

Date	Security	Shares	Price	Type	Value
Jul 29, 2026	SMBC common stock	2,000	$37.31	Exercise	$74.6K
Jul 29, 2026	SMBC common stock	2,000	$34.35	Exercise	$68.7K
Jul 29, 2026	SMBC common stock	1,830	$78.31	Disposition	$143.3K

Derivative Transactions

Date	Security	Shares	Exercise Price	Type	Value
Jul 29, 2026	SMBC derivative	2,000	$34.35	Exercise	$68.7K
Jul 29, 2026	SMBC derivative	2,000	$37.31	Exercise	$74.6K

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Footnotes

(F1)On July 29, 2026, the Reporting Person exercised employee stock options to purchase an aggregate of 4,000 shares of the Issuer's common stock, consisting of options to purchase 2,000 shares at an exercise price of $37.31 per share and options to purchase 2,000 shares at an exercise price of $34.35 per share. The aggregate exercise price of $143,320 was paid through the delivery to the Issuer of 1,830 shares of common stock previously owned by the Reporting Person having an aggregate fair market value of $143,307, together with a cash payment of $13. The surrendered shares are reported in Table I as a disposition.
(F2)Reflects 401(k) contributions that have occurred since the date of the reporting person's last ownership report.
(F3)The options become exercisable in 20% installments over a five year period with the first installment vesting on 1/4/20. Each remaining installment vests annually thereafter.
(F4)The options become exercisable in 20% installments over a five year period with the first installment vesting on 1/16/19. Each remaining installment vests annually thereafter.
(F5)The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/24/27. Each remaining installment vests annually thereafter.
(F6)The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/18/26. Each remaining installment vests annually thereafter.
(F7)The options become exercisable in 20% installments over a five-year period with the first installment vesting on 2/8/25. Each remaining installment vests annually thereafter.
(F8)The options become exercisable in 20% installments over a five-year period with the first installment vesting on 2/21/24. Each remaining installment vests annually thereafter.
(F9)The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/3/23. Each remaining installment vests annually thereafter.
(F10)The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/10/22. Each remaining installment vests annually thereafter.
(F11)The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/18/21. Each remaining installment vests annually thereafter.

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^*

HECKER MARK E

(Last)

(First)

(Middle)

2991 OAK GROVE RD.

(Street)

POPLAR BLUFF

63901

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
SOUTHERN MISSOURI BANCORP, INC. [ SMBC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	EVP-CHIEF CREDIT OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
07/29/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock⁽¹⁾	07/29/2026		M		2,000	A	$37.31	9,895	D
Common Stock⁽¹⁾	07/29/2026		M		2,000	A	$34.35	11,895	D
Common Stock⁽¹⁾	07/29/2026		D		1,830	D	$78.31	10,065	D
Common Stock								2,052.663⁽²⁾	I	401(k)
Common Stock								10,630	I	IRA
Common Stock								185	I	Spouse IRA

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)	$34.35	07/29/2026		M			2,000	⁽³⁾	01/04/2029	Common Stock	2,000	$34.35	0	D
Stock Option (Right to Buy)	$37.31	07/29/2026		M			2,000	⁽⁴⁾	01/16/2028	Common Stock	2,000	$37.31	0	D
Stock Option (Right to Buy)	$62.96							⁽⁵⁾	02/24/2036	Common Stock	1,500		1,500	D
Stock Option (Right to Buy)	$60.42							⁽⁶⁾	02/18/2035	Common Stock	1,500		1,500	D
Stock Option (Right to Buy)	$40.82							⁽⁷⁾	02/08/2034	Common Stock	2,500		2,500	D
Stock Option (Right to Buy)	$46.94							⁽⁸⁾	02/21/2033	Common Stock	2,500		2,500	D
Stock Option (Right to Buy)	$53.82							⁽⁹⁾	02/03/2032	Common Stock	1,500		1,500	D
Stock Option (Right to Buy)	$34.91							⁽¹⁰⁾	02/10/2031	Common Stock	3,000		3,000	D
Stock Option (Right to Buy)	$37.4							⁽¹¹⁾	02/18/2030	Common Stock	2,000		2,000	D

Explanation of Responses:

1. On July 29, 2026, the Reporting Person exercised employee stock options to purchase an aggregate of 4,000 shares of the Issuer's common stock, consisting of options to purchase 2,000 shares at an exercise price of $37.31 per share and options to purchase 2,000 shares at an exercise price of $34.35 per share. The aggregate exercise price of $143,320 was paid through the delivery to the Issuer of 1,830 shares of common stock previously owned by the Reporting Person having an aggregate fair market value of $143,307, together with a cash payment of $13. The surrendered shares are reported in Table I as a disposition.

2. Reflects 401(k) contributions that have occurred since the date of the reporting person's last ownership report.

3. The options become exercisable in 20% installments over a five year period with the first installment vesting on 1/4/20. Each remaining installment vests annually thereafter.

4. The options become exercisable in 20% installments over a five year period with the first installment vesting on 1/16/19. Each remaining installment vests annually thereafter.

5. The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/24/27. Each remaining installment vests annually thereafter.

6. The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/18/26. Each remaining installment vests annually thereafter.

7. The options become exercisable in 20% installments over a five-year period with the first installment vesting on 2/8/25. Each remaining installment vests annually thereafter.

8. The options become exercisable in 20% installments over a five-year period with the first installment vesting on 2/21/24. Each remaining installment vests annually thereafter.

9. The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/3/23. Each remaining installment vests annually thereafter.

10. The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/10/22. Each remaining installment vests annually thereafter.

11. The options become exercisable in 20% installments over a five year period with the first installment vesting on 2/18/21. Each remaining installment vests annually thereafter.

	/s/ Mark E Hecker	07/31/2026
	** 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.

Form 4 as rendered by the SEC from accession 0001355433-26-000006.

SOUTHERN MISSOURI BANCORP, INC.

Trade Summary

Company Information

Insider Information

Filing Details

Non-Derivative Transactions

Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

SEC Form 4