Origin Bancorp (OBK) director buys 1,000 shares at $33.93 — Form 4

Origin Bancorp (OBK) insider activity: A director reported buying 1,000 shares of common stock on 10/27/2025 at $33.93 per share.

Rhea-AI Filing Summary

Origin Bancorp (OBK) insider activity: A director reported buying 1,000 shares of common stock on 10/27/2025 at $33.93 per share.

Following the purchase, the director directly owns 47,917 shares. In addition, 18,131 shares are held by Houston Trust Company; the director serves as Chairman and on its investment committee with shared voting and dispositive power and disclaims beneficial ownership except to the extent of any pecuniary interest.

The filing was made by one reporting person and reflects a routine Form 4 ownership update.

Insider Trade Summary

Net Buyer: 1,000 shares

Net Buy 2 txns

Insider D'Agostino James Samuel Jr.

Role Director

Bought 1,000 shs ($34K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,000	$33.93	$34K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 47,917 shares (Direct); Common Stock — 18,131 shares (Indirect, See footnote.)

Footnotes (1)

1. F1. Represents shares of common stock held by Houston Trust Company. The reporting person serves as Chairman of the board of directors and on the investment committee of Houston Trust Company and has shared voting and dispositive power over the shares. The reporting person disclaims any beneficial ownership in the shares of common stock held by Houston Trust Company, except to the extent of his pecuniary interest in Houston Trust Company. Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities by any reporting person for purposes of Section 16 or for any other purpose.

FAQ

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What did Origin Bancorp (OBK) disclose in this Form 4?

A director purchased 1,000 shares of common stock at $33.93 on 10/27/2025.

How many Origin Bancorp shares does the insider own after the trade?

The insider directly owns 47,917 shares following the reported transaction.

Was there any indirect ownership reported for OBK?

Yes. 18,131 shares are held by Houston Trust Company. The insider has shared voting and dispositive power and disclaims beneficial ownership except for any pecuniary interest.

What was the purchase price for the OBK shares?

The reported purchase price was $33.93 per share.

Who filed the report and in what capacity?

The filing was made by one reporting person who is a Director of Origin Bancorp.

What type of SEC filing is this?

This is a Form 4, which reports changes in the beneficial ownership of an issuer’s equity securities by insiders.

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Accepted by SEC EDGAR 10/29/2025 - 03:56 PM EDT Learn about SEC filing dates

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^*

D'Agostino James Samuel Jr.

(Last) (First) (Middle)

500 SOUTH SERVICE ROAD EAST

(Street)

RUSTON LA 71270

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Origin Bancorp, Inc. [ OBK ]

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)
10/27/2025

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	10/27/2025		P		1,000	A	$33.93	47,917	D
Common Stock								18,131	I	See footnote.(1)

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

Explanation of Responses:

1. Represents shares of common stock held by Houston Trust Company. The reporting person serves as Chairman of the board of directors and on the investment committee of Houston Trust Company and has shared voting and dispositive power over the shares. The reporting person disclaims any beneficial ownership in the shares of common stock held by Houston Trust Company, except to the extent of his pecuniary interest in Houston Trust Company. Pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities by any reporting person for purposes of Section 16 or for any other purpose.

Remarks:

	/s/ Drake Mills, as Attorney-in-Fact	10/29/2025
	** 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.