Supplemental Executive Retirement Plan, dated August 17, 2018, by and between Origin Bank and Stephen H. Brolly

“Accrued Liability Balance” shall mean the amount accrued by the Bank to fund the future benefit expense associated with this Agreement. The Bank shall account for this benefit using Generally Accepted Accounting Principles, regulatory accounting guidance of the Bank’s primary federal regulator, and other applicable accounting guidance, including, as applicable, ASC 710. Accordingly, the Bank shall establish a liability retirement account for the Executive into which appropriate accruals shall be made using a reasonable discount rate, which may be adjusted from time to time.

“Beneficiary” shall mean the person(s), including the estate of the Executive, entitled to review Executive’s benefit, or the reminder thereof, in the event of Executive’s death after attaining Normal Retirement Age, as provide in Article V.

“Board” shall mean the Board of Directors of the Bank.

“Change in Control” shall mean a change in ownership or control of the Bank as defined in Treasury Regulation §1.409A-3(i)(5) or any subsequently applicable published authority or guidance.

“Disability” shall mean Executive, while actively employed by the Bank: (i) is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months; or (ii) is, by reason of any medically determinable physical or mental impairment which can be expected to result in death or

“Good Reason” shall mean the occurrence of any of the following conditions without Executive’s consent:

a material change in the geographic location at which Executive must perform services, provided, however, that any such relocation request shall not be considered a material change if such relation is within a thirty-five (35) mile radius of the office at which Executive was based on the Effective date of this Agreement.

a material diminution in authority, duties or responsibilities of the supervisor to whom Executive is required to report;

a material diminution in the budget over which Executive retains authority;

any other action or inaction that constitutes a material breach by the Bank of any agreement pursuant to which Executive performs services for the Bank.

“Effective Date” shall mean July 1, 2018.

“Involuntary Separation from Service” shall mean that the Bank terminates Executive’s employment at any time before Executive’s Normal Retirement Age and such termination is not considered a Termination for Cause. A Separation from Service for “Good Reason” as defined above, will also be treated as an Involuntary Separation from Service, provided such Separation from Service meets the necessary “safe harbor” conditions as set forth under Section 409A of the Code.

”Plan Year” shall mean each a twelve (12) month period commencing on January 1^st and ending on December 31^st. The initial Plan Year shall commence on the effective date of the Agreement.

“Present Value” shall mean the distribution amount under this Agreement discounted to present value using the discount rate the Bank is currently using for accrual purposes for the month in which a required calculation is made.

“Separation from Service” shall mean that the Executive has retired or otherwise has a termination of employment with the Bank. For purposes of this Agreement, whether a termination of employment or service has occurred is determined based on whether the facts and circumstances indicate that the Bank and Executive reasonably anticipated that no further services would be performed after a certain date, or that the level of bona fide services the Executive would perform after such date (whether as an Executive or as an independent contractor) would permanently decrease to no more than twenty percent (20%) of the average level of bona fide services performed (whether as an Executive or an independent contractor) over the immediately preceding thirty-six (36) month period (or the full period of services to the Bank if the Executive has been providing services to the Bank less than 36 months). Facts and circumstances to be considered in making this determination include, but are not limited to, whether the Executive continues to be treated as an Executive for other purposes (such as continuation of salary and participation in Executive benefit programs), whether similarly situated service providers have been treated consistently, and whether the Executive is permitted, and realistically available, to perform services for other service recipients in the same line of business. An Executive will be presumed not to have separated from service where the level of bona fide services performed continues at a level that is fifty percent (50%) or more of the average level of service performed by the Executive during the immediately preceding thirty-six (36) month period. A Separation from Service will not be deemed to have occurred while the Executive is on military leave, sick leave, or other bona fide leave of absence, provided Executive has the right to reemployment under an applicable statute or by contract.

“Termination for Cause” shall mean a termination of service for:

Executive’s willful and continued failure to perform substantially his/her duties with the Bank (other than as a result of incapacity due to physical or mental condition), after a demand for substantial performance is delivered to him/her by the Chief Executive Officer that specifically identifies the manner in which Employee has not substantially performed his/her duties and Executive has not corrected such actions within a reasonable period of time not to exceed ten (10) days;

Executive’s will commission of misconduct which is materially injurious to the Bank, monetarily or otherwise;

A conviction, guilty plea or no contest plea involving dishonesty moral turpitude in connection with the Executive’s employment with the Bank or otherwise;

Executive’s material breach of any provision of this Agreement;

Executive’s willful violation of policies or procedures of the Bank or its Significant Subsidiaries,

Intentional wrongful disclosure of confidential information of the Bank or any of its subsidiaries or affiliates.

”Unforeseeable Emergency” shall mean a severe financial hardship to the Executive resulting from an illness or accident of the Executive, the Executive’s spouse, the Executive’s dependent loss of the Executive’s property due to casualty, other similar extraordinary and unforeseeable circumstances arising as a result of events beyond the control of the Executive. The imminent foreclosure of or eviction from the service provider’s primary residence may constitute an Unforeseeable Emergency. In addition, the need to pay for medical expenses, including non-refundable deductibles, as well as for the costs of prescription drug medication, may constitute an Unforeseeable Emergency. Finally, the need to pay for the funeral expenses of a spouse or a dependent may also constitute an Unforeseeable Emergency. At all times this definition shall be construed in accordance with the definition under Section 409A. If the Executive seeks to terminate any current deferral elections or re-start the deferral election, it must be done in accordance with Section 409A.

“Vested Benefit” shall mean a percentage of the applicable Table B Benefit available prior to Retirement, (as shown under “Amount of Benefit”) earned by the Executive, based on the following:

“Voluntary Separation from Service” shall mean the Executive terminates employment with the Bank prior to Normal Retirement Age for reasons other than death, disability, Termination for Cause, or Separation from Service following a Change in Control.

“Year of Service” shall mean each consecutive 12-month period, commencing on the Effective Date of this Agreement and continuing until the Executive reaches the Normal Retirement Age, during which the Executive is actively employed on a full-time basis with the Bank.

Hardship Distribution. The Bank will permit early withdrawals for an Unforeseeable Emergency under certain circumstances arising as a result of events beyond the control of the Executive. The Executive may submit an application for an in-service early withdrawal due to an Unforeseeable Emergency to the Board of Directors. If, in the discretion of the Board, the Executive is permitted to take an early withdrawal due to an Unforeseeable Emergency, the Board shall make a distribution to such Executive from the Executive’s Account. Such distribution shall be paid in one (1) lump sum payment within thirty (30) days, after the Board determines that the Executive is permitted to take an early withdrawal due to an Unforeseeable Emergency. The amount of such lump sum payment shall be limited to the amount reasonably necessary to meet the Executive’s requirements to the extent such emergency is not relieved through reimbursement or compensation from insurance or otherwise, by liquidation of the Executive’s assets, (to the extent the liquidation of such assets will not cause severe financial hardship) or by cessation of deferrals.

Restriction on Timing of Distributions.  Notwithstanding anything to the contrary contained herein and solely to the extent necessary to avoid penalties under Section 409A, distributions under this Agreement may not commence earlier than six (6) months after a Separation from Service (as described under the “Separation from Service” provision herein) if, pursuant to Internal Revenue Code Section 409A, the Executive hereto is considered a “Specified Employee” of a publicly-traded company. In the event a distribution is delayed pursuant to this Section, the originally scheduled distribution shall be delayed for six (6) months, and shall commence instead on the first day of the seventh month following Separation from Service. If payments are scheduled to be made in installments, the first six (6) months of installment payments shall be delayed, aggregated, and paid instead on the first day of the seventh month, after which all installment payments shall be made on their regular schedule. If payment is scheduled to be made in a lump sum, the lump sum payment shall be delayed for six (6) months and instead be made on the first day of the seventh month.

Distributions Upon Income Inclusion Under Section 409A of the Code. If any amount is required to be included in income by the Executive prior to receipt due to a failure of this Agreement to meet the requirements of Code Section 409A, the Executive may petition the Plan Administrator for a distribution of that portion of the amount the Bank has accrued with respect to the Bank’s obligations hereunder that is required to be included in the Executive’s income. Upon the grant of such petition, which grant shall not be unreasonably withheld, the Bank shall distribute to the Executive immediately available funds in an amount equal to the portion of the amount the Bank has accrued with respect to the Bank’s obligations hereunder required to be included in income as a result of the failure of this Agreement to meet the requirements of Code Section 409A, within ninety (90) days of the date when the Executive’s petition is granted. Such a distribution shall effect and reduce the Executive’s benefits to be paid under this Agreement.

Change in Form or Timing of Distributions. Any change to the form or timing of distributions hereunder shall be considered made only when it becomes irrevocable under the terms of the Agreement. Any change will be considered irrevocable not later than thirty (30) days following acceptance of the change by the Plan Administrator and must comply with the following rules:

The change may not accelerate the time or schedule of any distribution, except as provided in Code Section 1.409A-3(j)(4);

The subsequent deferral election may not take effect until at least twelve (12) months after the date on which the election is made;

The payment (except in the case of death, Disability, or Unforeseeable Emergency) upon which the subsequent deferral election is made is deferred for a period of not less than five (5) years from the date such payment would otherwise have been paid; and

In the case of a payment made at a specified time, the election must be made not less than twelve (12) months before the date the payment is scheduled to be paid.

Beneficiary. Executive shall have the right to name a Beneficiary of the death benefit, if any, described in Article 1 herein. Executive shall have the right to name such Beneficiary at any time prior to Executive’s death and submit it to the Plan Administrator (or Plan Administrator’s representative) on the form provided. Once received and

Failure to Designate a Beneficiary. If Executive dies without a valid Beneficiary designation on file with the Plan Administrator, the Executive’s surviving spouse, if any, shall become the designated Beneficiary. If Executive has no surviving spouse, death benefits shall be paid to the personal representative of Executive’s estate.

Facility of Distribution. If the Plan Administrator determines in its discretion that a benefit is to be paid to a minor, to a person declared incompetent, or to a person incapable of handling the disposition of that person’s property, the Plan Administrator may direct distribution of such benefit to the guardian, legal representative or person having the care or custody of such minor, incompetent person or incapable person. The Plan Administrator may require proof of incompetence, minority or guardianship as it may deem appropriate prior to distribution of the benefit. Any distribution of a benefit shall be a distribution for the account of the Executive and the Beneficiary, as the case may be, and shall be a complete discharge of any liability under the Agreement for such distribution amount.

Termination for Cause. Notwithstanding any provision of this Agreement to the contrary, the Bank shall not distribute any benefit under this Agreement if Executive’s employment is terminated for Cause.

Removal. Notwithstanding any provision of this Agreement to the contrary, the Bank shall not distribute any benefit under this Agreement if the Executive is subject to a final removal or prohibition order issued by an appropriate federal banking agency pursuant to Section 8(e) of the Federal Deposit Insurance Act.

Suicide or Misstatement. The Bank shall not pay any benefit under this Agreement if the Executive commits suicide within three (3) years after the date of this Agreement. In addition, the Bank shall not pay any benefit under this Agreement if the Executive has made any material misstatement of fact on an employment application or resume provided to the Bank, or on any application for any benefits provided by the Bank to the Executive.

Plan Administrator. The Bank shall be the Plan Administrator, unless the Bank appoints a committee to be the Plan Administrator. The Bank may appoint a Committee of one or more individuals in the employment of Bank for the purpose of discharging the administrative responsibilities of the Bank under the Plan. The Bank may remove a Committee member for any reason by giving such member ten (10) days’ written notice and may thereafter fill any vacancy thus created. The Committee shall represent the Bank in all matters concerning the administration of this Plan; provided however, the final authority for all administrative and operational decisions relating to the Plan remains with the Bank.

Authority of Plan Administrator. The Plan Administrator shall have full power and authority to adopt rules and regulations for the administration of the Plan, provided they are not inconsistent with the provisions of this Plan, and Section 409A of the Code, to interpret, alter, amend or revoke any rules and regulations so adopted, to enter into contracts on behalf of the Bank with respect to this Agreement, to make discretionary decisions under this Plan, to demand satisfactory proof of the occurrence of any event that is a condition precedent to the commencement of any payment or discharge of any obligation under the Plan, and to perform any and all administrative duties under this Plan.

Recusal. An individual serving as Plan Administrator may be eligible to participate in the Plan, but such person shall not be entitled to participate in discretionary decisions under Article 7 relating to such person’s own interests in the Plan.

Agents. In the administration of this Agreement, the Plan Administrator may employ agents and delegate to them such administrative duties as it sees fit, (including acting through a duly appointed representative), and may from time to time consult with counsel who may be counsel to the Bank.

Binding Effect of Decisions. The decision or action of the Plan Administrator with respect to any question arising out of or in connection with the administration, interpretation and application of the Agreement and the rules and regulations promulgated hereunder shall be final and conclusive and binding upon all persons having any interest in the Agreement.

Indemnity of Plan Administrator. The Bank shall indemnify and hold harmless any party contracted for the purposes of assisting the Plan Administrator in performing its duties under this Agreement against any and all claims, losses, damages, expenses or liabilities arising from any action or failure to act with respect to this Agreement, except in the case of willful misconduct by such contracted party.

Bank Information. To enable any party contracted for the purposes of assisting the Plan Administrator in performing its duties under this Agreement to perform its functions, the Bank shall supply full and timely information to such contracted party on all matters relating to the date and circumstances of any event triggering a benefit hereunder.

Annual Statement. Any party contracted for the purposes of assisting the Plan Administrator in performing its duties under this Agreement shall provide to the Bank, on the schedule set forth in the Administrative Services Contract, a statement setting forth the benefits to be distributed under this Agreement.

Amendments. This Agreement may be amended only by a written agreement signed by the Bank and the Executive. However, the Bank may unilaterally amend this Agreement to conform with written directives to the Bank from its auditors or bank regulators or to comply with legislative changes or tax law, including without limitation Section 409A of the Code and any and all Treasury regulations and guidance promulgated thereunder.

Plan Termination – Generally. This Agreement may be terminated only by a written agreement signed by the Bank and the Executive. Except as provided in Section 9.3, the termination of this Agreement shall not cause a distribution of benefits under this Agreement. Rather, after such termination, benefit distributions will be made at the earliest distribution event permitted under Table A.

Plan Termination Under Section 409A. Notwithstanding anything to the contrary in Section 9.2, this Agreement may be terminated in the following circumstances:

Within thirty (30) days before or twelve (12) months after a Change in Control, provided that all distributions are made no later than twelve (12) months following such termination of the Agreement and further provided that all the Bank’s arrangements which are substantially similar to the Agreement are terminated so the Trustee and all participants in the similar arrangements are required to receive all amounts of compensation deferred under the terminated arrangements within twelve (12) months of such terminations;

Upon the Bank’s dissolution or with the approval of a bankruptcy court provided that the amounts deferred under the Agreement are included in the Trustee’s gross income in the latest of (i) the calendar year in which the Agreement terminates; (ii) the calendar year in which the amount is no longer subject to a substantial risk of forfeiture; or (iii) the first calendar year in which the distribution is administratively practical; or

Upon the Bank’s termination of this and all other arrangements that would be aggregated with this Agreement pursuant to Treasury Regulations Section 1.409A-1(c) if the Trustee participated in such arrangements (“Similar Arrangements”), provided that (i) the termination and liquidation does not occur proximate to a downtown in the financial health of the Bank, (ii) all termination distributions are made no earlier than twelve (12) months and no later than twenty-four (24) months following such termination, and (iii) the Bank does not adopt any new arrangements any new arrangement that would be a Similar Arrangement for a minimum of three (3) years following the date the Bank takes all necessary action to irrevocably terminate and liquidate the Agreement.

Binding Effect. This Agreement shall bind the Executive and the Bank, and their beneficiaries, survivors, executors, administrators and transferees.

No Guarantee of Employment. This Agreement is not a contract for employment. It does not give the Executive the right to remain as an employee of the Bank, nor does it interfere with the Bank's right to discharge the Executive. It also does not require the Executive to remain an employee nor interfere with the Executive's right to terminate employment at any time.

Non-Transferability. Benefits under this Agreement cannot be sold, transferred, assigned, pledged, attached or encumbered in any manner.

Tax Withholding. The Bank shall withhold any taxes that are required to be withheld from the benefits provided under this Agreement. The Executive acknowledges that the Bank’s sole liability regarding taxes is to forward any amounts withheld to the appropriate taxing authorities.

Applicable Law. The Agreement and all rights hereunder shall be governed by the laws of the state where the Bank’s primary corporate headquarters is located, except to the extent preempted by the laws of the United States of America.

Unfunded Arrangement. The Executive is a general unsecured creditor of the Bank for the distribution of benefits under this Agreement. The benefits represent the mere promise by the Bank to distribute such benefits. The rights to benefits are not subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment, or garnishment by creditors. Any insurance on the Executive's life or other informal funding asset is a general asset of the Bank to which the Executive has no preferred or secured claim.

Reorganization. The Bank shall not merge or consolidate into or with another bank, or reorganize, or sell substantially all of its assets to another bank, firm, or person unless such succeeding or continuing bank, firm, or person agrees to assume and discharge the obligations of the Bank under this Agreement. Upon the occurrence of such event, the term “Bank” as used in this Agreement shall be deemed to refer to the successor or survivor bank.

Entire Agreement. This Agreement constitutes the entire agreement between the Bank and the Executive as to the subject matter hereof. No rights are granted to the Executive by virtue of this Agreement other than those specifically set forth herein.

Interpretation. Wherever the fulfillment of the intent and purpose of this Agreement requires, and the context will permit, the use of the masculine gender includes the feminine and use of the singular includes the plural.

Alternative Action. In the event it shall become impossible for the Bank or the Plan Administrator to perform any act required by this Agreement, the Bank or Plan Administrator may in its discretion perform such alternative act as most nearly carries out the intent and purpose of this Agreement and is in the best interests of the Bank.

Headings. Article and section headings are for convenient reference only and shall not control or affect the meaning or construction of any of its provisions.

Validity. In case any provision of this Agreement shall be illegal or invalid for any reason, said illegality or invalidity shall not affect the remaining parts hereof, but this Agreement shall be construed and enforced as if such illegal and invalid provision has never been inserted herein.

Notice. Any notice or filing required or permitted to be given to the Bank or Plan Administrator under this Agreement shall be sufficient if in writing and hand-delivered, or sent by registered or certified mail, to the address below:

Right to Setoff. The Bank may, to the extent permitted by applicable law, deduct from and setoff against any amounts payable to an Executive from this Agreement such amounts as may be owed by a Executive to the Bank, although the Executive shall remain liable for any part of the Executive’s payment obligation not satisfied through such deduction and setoff. By participating in the Agreement, the Executive agrees to any deduction or setoff under this Section 10.14, which is allowed by law.

Limitation on Actions. Executive or Beneficiary who disagrees with a denial of his appealed claim under Article 8 of this Agreement must file any complaint in a federal District Court to dispute such determination (a) within three (3) years of the earlier of the date on which such claim for benefits first accrued or arose under the terms of the Agreement, or (b) within one (1) year after the such claim was denied upon appeal, or deemed denied under Article 8 hereof.

No Guarantee of Tax Consequences. While the Agreement is intended to provide tax deferral for Executive, the Agreement is not a guarantee that the intended tax deferral will be achieved. Executive is solely responsible and liable for the satisfaction of all taxes and penalties that may arise in connection with this Agreement. Neither the Bank nor any of its directors, officers or employees shall have any obligation to indemnify or otherwise hold Executive harmless from any such taxes.

Deduction Limitation on Benefit Payments. If the Bank reasonably anticipates that the Bank’s deduction with respect to any distribution under this Agreement would be limited or eliminated by application of Code Section 162(m), then to the extent deemed necessary by the Bank to ensure that the entire amount of any distribution from this Agreement is deductible, the Bank may delay payment of any amount that would otherwise be distributed under this Agreement. The delayed amounts shall be distributed to the Executive (or Beneficiary in the event of the Executive’s death) at the earliest date the Bank reasonably anticipates that the deduction of the payment of the amount will not be limited or eliminated by application of Code Section 162(m).

Suicide or Misstatement. No benefit shall be distributed if the Executive commits suicide within two (2) years after the Effective Date, or if an insurance company which issued a life insurance policy covering the Executive and owned by the Bank denies coverage for misstatements of fact made by the Executive on an application for such life insurance or for any other reason.

Opportunity to Consult with Independent Advisors. The Executive acknowledges that he has been afforded the opportunity to consult with independent advisors of his choosing including, without limitation, accountants or tax advisors and counsel regarding both the benefits granted to him under the terms of this Agreement and the (i) terms and conditions which may affect the Executive's right to these benefits, and (ii) personal tax effects of such benefits including, without limitation, the effects of any federal or state taxes, Section 280G of the Code, Section 409A of the Code, and any other taxes, costs, expenses or liabilities whatsoever related to such benefits, which in any of the foregoing instances the Executive acknowledges and agrees shall be the sole responsibility of the Executive notwithstanding any other term or provision of this Agreement. The Executive further acknowledges and agrees