[Form 4] Origin Bancorp, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Stephen H. Brolly, identified as the reporting person and Chief Accounting Officer of Origin Bancorp, Inc. (OBK), reported transactions on 08/19/2025. A grant of 1,113 restricted stock units (RSUs) converted into 1,113 shares of common stock (one-for-one). The issuer withheld 289 shares$36.6521,613 shares21,324 shares920 shares6,875 shares

Positive

• 1,113 RSUs vested and converted one-for-one into common stock, increasing direct ownership
• 920 shares purchased under the ESPP for the June 1, 2024–May 31, 2025 purchase period
• 6,875 shares held indirectly via the issuer retirement plan, indicating continued long-term alignment

Negative

• 289 shares withheld to satisfy income tax withholding, which reduced the net increase in direct shares

Insights

Securities Analyst

TL;DR Insider received vested RSUs, resulting in a modest net increase in directly held shares after tax withholding.

The filing documents routine insider compensation settlement: 1,113 RSUs vested and converted to common stock, with 289 shares withheld to cover withholding taxes at a $36.65 per-share basis. Net direct holdings rose from pre-transaction levels to 21,324 shares following net settlement. The filing also confirms participation in the ESPP (920 shares) and material indirect holdings (6,875 shares) through the issuer retirement plan. This is a standard equity compensation event and not an open-market sale.

Corporate Governance Expert

TL;DR Transaction reflects standard vesting and tax withholding mechanics; disclosures are complete for an officer-level reporting person.

The report clearly discloses the nature and timing of the transactions: vesting date (08/19/2025), original grant date (08/19/2022) with three-year ratable vesting, and the tax withholding via share retention. It also identifies ESPP purchases and indirect retirement-plan holdings, which provide transparency around both direct and indirect beneficial ownership. No sales or transfers beyond tax withholding are reported.

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

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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^*

Brolly Stephen H

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Accounting Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/19/2025

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	08/19/2025		M		1,113	A	(1)	21,613(2)	D
Common Stock	08/19/2025		F(3)		289	D	$36.65	21,324(2)	D
Common Stock								6,875	I	BY ISSUER RETIREMENT PLAN

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
Restricted Stock Units	(1)	08/19/2025		M			1,113	(4)	(4)	Common Stock	1,113	$0	0(4)	D

Explanation of Responses:

1. Restricted stock units convert into common stock on a one-for-one basis.

2. Includes 920 shares of Common Stock purchased pursuant to the Origin Bancorp, Inc. 2021 Employee Stock Purchase Plan ("ESPP"), for the purchase period of June 01, 2024 to May 31, 2025.

3. Represents the number of common stock that have been withheld by the issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of the restricted stock units and does not represent a sale.

4. Granted on August 19, 2022, vesting ratably over three years with the first vest date of August 19, 2023.

Remarks:

	/s/ Drake Mills, as Attorney-in-Fact	08/20/2025
	** 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.

FAQ

What insider transactions did OBK Chief Accounting Officer report on 08/19/2025?

1,113 RSUs vested and converted to common stock; 289 shares were withheld21,324 shares.

How many shares did Stephen H. Brolly acquire from RSU vesting?

1,113 shares were acquired upon RSU conversion, with 289 shares withheld

Did the filing report any open-market sales by the reporting person (OBK)?

No open-market sales are reported; the only disposition was share withholding for taxes related to RSU net settlement.

What ESPP activity is disclosed for OBK in this Form 4?

The filing discloses 920 shares purchased

When were the RSUs originally granted and how do they vest?

The RSUs were granted on 08/19/2022 and vest ratably over three years, with the first vest date on 08/19/2023.