0001516912-26-000036 | 11-K | XBRL Viewer

EBP, Schedule of Asset Held for Investment [Line Items]

Schedule H, Line 4i – Schedule of Assets (Held At End of Year)

ORIGIN BANCORP, INC.

EMPLOYEE RETIREMENT PLAN

EIN: 72-1192928

Plan #003

Schedule H, Line 4i — Schedule of Assets (Held at End of Year)

December 31, 2025

(a)

(b) Identity of issuer, borrower, lessor, or similar party

(d) Cost

(e) Current value

Mutual funds of registered investment companies

The American Funds

American Funds New World R6

1,867,727

Dodge & Cox

Dodge & Cox Income

6,329,435

Dodge & Cox

Dodge & Cox Stock

6,899,988

Federated Securities Corporation

Government Obligations Fund

1,257,014

MFS Investment Management

MFS Growth R6 Fund

8,420,528

MFS Investment Management

MFS INTL Diversification R6 FD

2,148,366

MFS Investment Management

MFS New Discovery R6

109,866

TIAA Investments

TIAA-CREF Lifestyle Aggressive Growth Institutional

1,430,875

TIAA Investments

TIAA-CREF Lifestyle Conservative Institutional

14,160,403

TIAA Investments

TIAA-CREF Lifestyle Growth Institutional

2,169,748

TIAA Investments

TIAA-CREF Lifestyle Income Institutional

112,899

TIAA Investments

TIAA-CREF Lifestyle Moderate Institutional

2,997,856

PIMCO

PIMCO Income Institutional

2,539,706

T. Rowe Price

T. Rowe Price Dividend Growth

5,250,376

T.Rowe Price

T. Rowe Price MD-CP GR I FD

198,307

Vanguard

Vanguard International Growth Admiral

2,499,752

Vanguard

Vanguard Mid-cap Index Admiral

4,973,977

Vanguard

Vanguard Real Estate Index Admiral

625,983

Vanguard

Vanguard Short Term Federal Admiral

2,996,832

Vanguard

Vanguard Small-cap Index Admiral

3,353,749

Vanguard

Vanguard 500 Index Admiral

15,255,541

Vanguard

Vanguard Total International Stock Index Admiral

1,657,507

Total Mutual Funds

87,256,435

Notes receivable from participants

0-12 years maturity; Interest from 4.25% to 9.50%

1,852,266

Origin Bancorp, Inc. Common Stock

1,009,600 shares of common stock; $5.00 par value per share

37,971,052

127,079,753

* Party-in-interest as defined by ERISA

** Cost omitted for participant-directed investments

Fair Value Measurements

12 Months Ended

Dec. 31, 2025

EBP, Investment, Fair Value and NAV [Line Items]

Fair Value Measurements

The framework for measuring fair value provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (level 1) and the lowest priority to unobservable inputs (level 3). The three levels of the fair value hierarchy are described as follows:

•Level 1 - Fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities that the Plan can access at the measurement date.

•Level 2 - Fair value is based on significant other observable inputs, which are generally determined based on a single price for each financial instrument provided to the Company by an unrelated third-party pricing service and is based on one or more of the following:

•Quoted prices for similar, but not identical, assets or liabilities in active markets;

•Quoted prices for identical or similar assets or liabilities in markets that are not active;

•Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates; and

•Other inputs derived from or corroborated by observable market inputs.

•Level 3 - Prices or valuation techniques that require inputs that are both significant and unobservable in the market. These instruments are valued using the best information available, some of which is internally developed, and reflects the Company’s own assumptions about the risk premiums that market participants would generally require and the assumptions they would use.

The asset or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques maximize the use of relevant observable inputs and minimize the use of unobservable inputs.

Following is a description of the valuation methodologies used for assets measured at fair value.

Mutual funds: Valued at the daily closing price as reported by the fund. Mutual funds held by the Plan are open-end mutual funds that are registered with the Securities and Exchange Commission. These funds are required to publish their daily net asset value (“NAV”) and to transact at that price. Included in mutual funds are money market mutual funds that intend to keep a constant NAV of $1.00 per share. There are no redemption restrictions on money market mutual funds. The mutual funds held by the Plan are deemed to be actively traded.

Company stock: At December 31, 2025 and 2024, the Company’s common stock was valued at the closing price reported on New York Stock Exchange, the market on which it was actively traded.

The following tables summarize the Plan’s assets at fair value as of December 31, 2025 and 2024:


	As of December 31, 2025
	Level 1		Level 2		Level 3		Total
Mutual funds	$	87,256,435	$	—	$	—	$	87,256,435
Investment in Company stock	37,971,052		—		—		37,971,052
Total assets at fair value	$	125,227,487	$	—	$	—	$	125,227,487


	As of December 31, 2024
	Level 1		Level 2		Level 3		Total
Mutual funds	$	74,730,877	$	—	$	—	$	74,730,877
Investment in Company stock	35,985,333		—		—		35,985,333
Total assets at fair value	$	110,716,210	$	—	$	—	$	110,716,210

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The entire disclosure for fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

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Description of the Plan - Vesting (Details) - EBP 003	12 Months Ended
Dec. 31, 2025
Less than 1
EBP, Description of Plan [Line Items]
Vested Percentage	0.00%
1
EBP, Description of Plan [Line Items]
Vested Percentage	20.00%
2
EBP, Description of Plan [Line Items]
Vested Percentage	40.00%
3
EBP, Description of Plan [Line Items]
Vested Percentage	60.00%
4
EBP, Description of Plan [Line Items]
Vested Percentage	80.00%
5 or more
EBP, Description of Plan [Line Items]
Vested Percentage	100.00%

Summary of Significant Accounting Policies (Policies) - EBP 003	12 Months Ended
	Dec. 31, 2025
EBP, Accounting Policy [Line Items]
Basis of Accounting	Basis of Accounting The financial statements of the Plan have been prepared on an accrual basis of accounting in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”).
Use of Estimates	Use of Estimates The preparation of financial statements in accordance with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and changes therein, and disclosure of contingent assets and liabilities. Actual results could differ from those estimates.
Risks and Uncertainties	Risks and Uncertainties Plan investments, including the Company’s common stock, are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with these investments, including in connection with recent market volatility due to economic uncertainty in the United States, among others, it is at least reasonably possible that changes in the value of the Plan investments will occur and that such changes could materially affect the amounts reported in the Statements of Net Assets Available for Benefits.
Investment Valuation and Income Recognition	Investment Valuation and Income Recognition The shares of Company common stock and investments in mutual funds are valued at fair value as of year-end. See Note 5 — Fair Value Measurements for discussion of fair value measurements. Dividend income is accrued on the ex-dividend date. Purchases and sales of securities are recorded on a trade date basis. Interest income is recorded on an accrual basis. Realized gains and losses from security transactions are reported using the average cost method. Net appreciation includes the Plan’s gains and losses on investments bought and sold as well as held during the year.
Participant Contribution Receivables	Participant Contribution Receivables The participant contribution receivables represent amounts deferred by participants from their compensation and withheld by the Company, but not yet remitted to the Plan as of the statement of net assets available for benefits date.
Notes Receivable from Participants	Notes Receivable from Participants Notes receivable from participants are measured at their unpaid principal balance plus any accrued but unpaid interest. Interest income is recorded on an accrual basis. Related fees are recorded as administrative expenses and are expensed as incurred. No allowance for credit losses was recorded as of December 31, 2025 or 2024. Delinquent participant loans are reclassified as distributions in accordance with the provisions set forth in the Plan document.
Payment of Benefits	Payment of Benefits Benefits are recorded when paid.
Income Taxes	Income Taxes Management has evaluated the Plan’s tax positions and concluded that the Plan has maintained its tax-exempt status and has taken no uncertain tax positions that require adjustment to the financial statements. Therefore, no provision or liability for income taxes has been included in the financial statements.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Presently, Plan management is not aware of any recent accounting pronouncements from the Financial Accounting Standards Board that will have a material impact on the Plan’s present or future financial statements.

Fair Value Measurements - Additional Information (Details)	Dec. 31, 2025 $ / shares
Mutual funds \| EBP 003
EBP, Investment, Fair Value and NAV [Line Items]
NAV per share (in dollars per share)	$ 1.00

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Related Party and Party-in-Interest Transactions (Details) - EBP 003 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Dividend income	$ 630,618	$ 651,133
Origin Bancorp, Inc. (“Company”) stock
EBP, Related Party and Party-in-Interest Transactions [Line Items]
Number of shares held by Plan (in shares)	1,009,600	1,080,965
Dividend income	$ 630,618	$ 651,133

Schedule H, Line 4i – Schedule of Assets (Held At End of Year) (Details) - EBP 003 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
EBP, Schedule of Asset Held for Investment [Line Items]
Entity tax identification number	72-1192928
Plan number	003
EBP, Asset Held for Investment	$ 127,079,753
Minimum
EBP, Schedule of Asset Held for Investment [Line Items]
Note receivable from participants, maturity term	0 years
Note receivable from participants, interest rate	4.25%
Maximum
EBP, Schedule of Asset Held for Investment [Line Items]
Note receivable from participants, maturity term	12 years
Note receivable from participants, interest rate	9.50%
Mutual funds
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	$ 87,256,435
Notes receivable from participants	1,852,266
Origin Bancorp, Inc. (“Company”) stock
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	$ 37,971,052
Origin Bancorp, Inc. Common Stock, number of shares (in shares)	1,009,600	1,080,965
Origin Bancorp, Inc. Common Stock, par value (in dollars per share)	$ 5.00
Investment, Identifier [Axis]: Mutual Funds \| Dodge & Cox \| Dodge & Cox Income
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	$ 6,329,435
Investment, Identifier [Axis]: Mutual Funds \| Dodge & Cox \| Dodge & Cox Stock
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	6,899,988
Investment, Identifier [Axis]: Mutual Funds \| Federated Securities Corporation \| Government Obligations Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	1,257,014
Investment, Identifier [Axis]: Mutual Funds \| MFS Investment Management \| MFS Growth R6 Fund
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	8,420,528
Investment, Identifier [Axis]: Mutual Funds \| MFS Investment Management \| MFS INTL Diversification R6 FD
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	2,148,366
Investment, Identifier [Axis]: Mutual Funds \| MFS Investment Management \| MFS New Discovery R6
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	109,866
Investment, Identifier [Axis]: Mutual Funds \| PIMCO \| PIMCO Income Institutional
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	2,539,706
Investment, Identifier [Axis]: Mutual Funds \| T. Rowe Price \| T. Rowe Price Dividend Growth
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	5,250,376
Investment, Identifier [Axis]: Mutual Funds \| T.Rowe Price \| T. Rowe Price MD-CP GR I FD
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	198,307
Investment, Identifier [Axis]: Mutual Funds \| TIAA Investments \| TIAA-CREF Lifestyle Aggressive Growth Institutional
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	1,430,875
Investment, Identifier [Axis]: Mutual Funds \| TIAA Investments \| TIAA-CREF Lifestyle Conservative Institutional
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	14,160,403
Investment, Identifier [Axis]: Mutual Funds \| TIAA Investments \| TIAA-CREF Lifestyle Growth Institutional
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	2,169,748
Investment, Identifier [Axis]: Mutual Funds \| TIAA Investments \| TIAA-CREF Lifestyle Income Institutional
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	112,899
Investment, Identifier [Axis]: Mutual Funds \| TIAA Investments \| TIAA-CREF Lifestyle Moderate Institutional
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	2,997,856
Investment, Identifier [Axis]: Mutual Funds \| The American Funds \| American Funds New World R6
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	1,867,727
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard 500 Index Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	15,255,541
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard International Growth Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	2,499,752
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard Mid-cap Index Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	4,973,977
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard Real Estate Index Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	625,983
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard Short Term Federal Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	2,996,832
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard Small-cap Index Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	3,353,749
Investment, Identifier [Axis]: Mutual Funds \| Vanguard \| Vanguard Total International Stock Index Admiral
EBP, Schedule of Asset Held for Investment [Line Items]
Current value	$ 1,657,507

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

EBP, Investment, Fair Value and NAV [Line Items]

Plan's Assets at Fair Value

The following tables summarize the Plan’s assets at fair value as of December 31, 2025 and 2024:


	As of December 31, 2025
	Level 1		Level 2		Level 3		Total
Mutual funds	$	87,256,435	$	—	$	—	$	87,256,435
Investment in Company stock	37,971,052		—		—		37,971,052
Total assets at fair value	$	125,227,487	$	—	$	—	$	125,227,487


	As of December 31, 2024
	Level 1		Level 2		Level 3		Total
Mutual funds	$	74,730,877	$	—	$	—	$	74,730,877
Investment in Company stock	35,985,333		—		—		35,985,333
Total assets at fair value	$	110,716,210	$	—	$	—	$	110,716,210

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Tabular disclosure of fair value of investment held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)), including, but not limited to, fair value measured at net asset value per share as practical expedient (NAV).

Statements of Net Assets Available for Benefits - EBP 003 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Investments, at fair value:
Total investments	$ 125,227,487	$ 110,716,210
Receivables:
Company contributions	525	0
Participant contributions	1,050	0
Notes receivable from participants	1,852,266	2,031,414
Total receivables	1,853,841	2,031,414
Total assets	127,081,328	112,747,624
Net assets available for benefits	127,081,328	112,747,624
Mutual funds
Investments, at fair value:
Total investments	87,256,435	74,730,877
Origin Bancorp, Inc. (“Company”) stock
Investments, at fair value:
Total investments	$ 37,971,052	$ 35,985,333

Description of the Plan

12 Months Ended

Dec. 31, 2025

EBP, Description of Plan [Line Items]

Description of the Plan

Plan Description and Basis of Presentation

The following summary description of the Origin Bancorp, Inc. Employee Retirement Plan (the “Plan”) is provided for general information purposes only. Participants should refer to the Plan document for complete information about the Plan.

General

Origin Bancorp, Inc. (the “Company” or the “Plan Sponsor”) established the Plan effective as of January 1, 1992, which has been subsequently amended to ensure continued compliance with Section 401(k) of the Internal Revenue Code (“IRC”) of 1986, as amended. The Plan is a defined contribution plan. The Plan is subject to the applicable provisions of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”) and is administered by the Company.

Eligibility

Employees of the Company and its wholly owned subsidiaries are generally eligible to participate in the Plan as of the first day of the following month after being employed for 25 days and meeting certain other requirements and employment classification criteria.

Plan Termination

The Company reserves the right to terminate the Plan at any time, subject to Plan provisions. Upon such termination of the Plan, each participant becomes fully vested in Company contributions and the interest of each participant in the trust fund will be distributed to such participant or to his or her beneficiary at the time prescribed by the Plan's terms and the IRC.

Notes Receivable from Participants

Participants may borrow from their fund accounts in a minimum amount of $1,000 up to a maximum amount equal to the lesser of $50,000 or 50% of their vested account balance. The loans are secured by the balance in the participant’s account. The Plan does not place loans on non-accrual status, as the loan repayments are set up as automatic deductions through payroll that continue until either the loan is repaid, or the participant’s employment terminates. Loan payments may be suspended during a participant's leave of absence and automatic deductions resume upon conclusion of a leave of absence.

Excess Contributions Payable

Amounts payable to participants for contributions in excess of amounts allowed by the Internal Revenue Service (“IRS”) are recorded as a liability with a corresponding reduction to contributions. There were no excess contributions payable at December 31, 2025 or 2024.

Contributions

Each year, participants may elect to contribute a percentage of their annual compensation as their 401(k) elective deferral contribution, and they may designate all or a portion of their 401(k) elective contribution as pre-tax or Roth after-tax contribution, as defined in the Plan, subject to certain maximum limitations imposed by the IRC ($23,500 and $23,000 for the years ended December 31, 2025 and 2024, respectively). Participants who have attained the age of 50 before the end of the plan year are eligible to make catch-up contributions, also subject to certain maximum limitations imposed by the IRC and IRS. Participants may also contribute amounts representing distributions from other qualified defined benefit or defined contribution plans (such contribution, a “rollover”). Participants direct the investment of their contributions into various investment options offered by the Plan. Under the provisions of the Plan, eligible employees are automatically enrolled to contribute 3% of their salary unless a different deferral percentage is chosen, or the employee affirmatively opts not to defer. In addition, each March 1, if a participant is not deferring at least 3% of the participant’s pay, the participant will be automatically enrolled again unless the participant affirmatively elects a different deferral percentage each year or affirmatively opts out each year. If the employee was automatically enrolled and has not affirmatively made a different election, the percentage will automatically increase by 1% annually, up to a maximum of 10%.

Under the provisions of the Plan, the Company may make discretionary matching contributions on a percentage, not to exceed 6% of a participant’s elective deferrals. Any percentage determined by the Company applies to all eligible persons for the entire plan year. Historically, the Company has matched 50% of the first 6% of eligible compensation deferred by a participant. The matching contributions made by the Company are allocated to the investment funds designated by the participant.

Additional profit-sharing amounts may be contributed at the option of the Company’s board of directors and are also allocated to investment funds designated by the eligible participant, based upon the percentage of the participant’s compensation to the total compensation of all eligible participants. No profit-sharing contributions were made during the years ended December 31, 2025 or 2024. It is intended that the actual contributions will be sufficient to fund each year’s benefit accrual and also lead to full funding of all accumulated benefits.

Payment of Benefits

No distributions from the Plan are made until a participant retires, dies, becomes disabled or otherwise terminates employment with the Company, unless the requirements for an in-service distribution, including a hardship distribution, are met in accordance with the Plan documents. The amount to be distributed is based upon the account valuation date immediately preceding the distribution. Distributions are made in cash or, if the participant elects, in the form of Company common stock plus cash for any fractional shares. As of December 31, 2025, there were two distributions in process totaling $48,118. As of December 31, 2024, there were two distributions in process totaling $87.

Administrative Expenses

Certain expenses incurred in maintaining the Plan are paid by the Plan, unless otherwise paid by the Company. Expenses that are paid by the Company are excluded from these financial statements. Fees related to the administration of notes receivable from participants are charged directly to the participant’s account and are included in administrative expenses. Investment related expenses are included in net appreciation in fair value of investments.

Voting Rights

Based on the direction of the Plan participants, the Trustee of the Plan votes all Company stock held by it as a part of the Plan assets in accordance with directions from the Plan participants for the Company stock allocated to such participant’s account. If the Trustee does not receive timely voting directions from a participant or beneficiary with respect to any Company stock allocated to that participant’s or beneficiary’s Company stock account, the Trustee votes such Company stock in the same proportion as those shares of Company stock for which the Trustee has received proper direction for such matter.

Participant Accounts

The Plan is a defined contribution plan under which a separate individual account is established for each participant. Each participant’s account is credited with the participant’s elective deferrals, the participant's rollover contributions, the Company’s matching contribution, any employer discretionary profit-sharing contributions and Plan earnings, which are allocated proportionately among all participants based on their allocation election in each fund.

Vesting

Participants are fully vested in their employee contributions plus actual earnings thereon. Company contributions are vested upon a participant’s reaching normal retirement age, upon an active participant’s death or under the following schedule:


Years of Service						Vested Percentage (%)
Less than 1						0
1						20
2						40
3						60
4						80
5 or more						100

Diversification

Participants may allocate contributions, including employer matching contributions, into any combination of investment options available through the Plan. Participants may re-allocate at any time with the exception of Company common stock during blackout periods.

Forfeitures

In the case of a participant’s termination of employment, the unvested portion of participants’ account is forfeited and used either to reduce the Company’s contributions or to pay Plan expenses. During the year ended December 31, 2025, forfeitures of $106 were applied to the payment of administrative expenses and $169,778 forfeitures were used to reduce the Company’s contributions. During the year ended December 31, 2024, forfeitures of $68 were applied to the payment of administrative expenses and $142,656 forfeitures were used to reduce the Company’s contributions. As of December 31, 2025 and 2024, forfeited non-vested accounts totaled $189,310 and $162,225, respectively.

Description of the Plan - Additional Information (Details) - EBP 003	12 Months Ended
	Dec. 31, 2025 USD ($) distribution	Dec. 31, 2024 USD ($) distribution
EBP, Description of Plan [Line Items]
EBP, Requisite Service Period	25 days
Minimum borrowing, amount	$ 1,000
Maximum borrowing, amount	$ 50,000
Maximum borrowing, to total account, percentage	50.00%
Excess contributions payable	$ 0	$ 0
Automatic deferral rate, annual increase	1.00%
Participant compensation matched, percentage	6.00%
Matching percentage	50.00%
Profit-sharing contributions	$ 0	$ 0
Number of distributions in process \| distribution	2	2
Distributions in process	$ 48,118	$ 87
Forfeited nonvested account, decrease from administrative expense	106	68
Forfeited nonvested account, decrease from employer contribution	169,778	142,656
Forfeited nonvested account	$ 189,310	$ 162,225
Minimum
EBP, Description of Plan [Line Items]
Automatic deferral rate	3.00%
Maximum
EBP, Description of Plan [Line Items]
Automatic deferral rate	10.00%

Statement of Changes in Net Assets Available for Benefits - EBP 003 - USD ($)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Investment income:
Net appreciation in fair value of investments	$ 13,390,041	$ 4,669,857
Interest and dividends from mutual funds	1,715,122	1,508,310
Dividends from Company stock	630,618	651,133
Net investment income	15,735,781	6,829,300
Interest income on notes receivable from participants	161,851	150,928
Contributions:
Company	2,527,917	2,584,171
Participant	7,699,678	7,697,788
Rollover	1,053,196	1,940,649
Total contributions	11,280,791	12,222,608
Net investment income, interest income and contributions	27,178,423	19,202,836
Deductions from net assets:
Benefits paid to participants	12,690,168	6,939,473
Administrative expenses	154,551	136,186
Total deductions	12,844,719	7,075,659
Net increase in net assets available for benefits	14,333,704	12,127,177
Beginning of year	112,747,624	100,620,447
End of year	$ 127,081,328	$ 112,747,624

Fair Value Measurements (Details) - EBP 003 - USD ($)	Dec. 31, 2025	Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 125,227,487	$ 110,716,210
Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	87,256,435	74,730,877
Origin Bancorp, Inc. (“Company”) stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	37,971,052	35,985,333
Level 1
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	125,227,487	110,716,210
Level 1 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	87,256,435	74,730,877
Level 1 \| Origin Bancorp, Inc. (“Company”) stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	37,971,052	35,985,333
Level 2
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 2 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 2 \| Origin Bancorp, Inc. (“Company”) stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3 \| Mutual funds
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	0	0
Level 3 \| Origin Bancorp, Inc. (“Company”) stock
EBP, Investment, Fair Value and NAV [Line Items]
Total investments	$ 0	$ 0

Fair value of investment, excluding plan interest in master trust, held by employee stock purchase, saving, or similar plan (employee benefit plan (EBP)). Includes, but is not limited to, derivative, investment measured at net asset value per share as practical expedient, and insurance contract not meeting fully-benefit responsive investment criteria.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.