OBK · Origin Bancorp, Inc.

Performance stock units ("PSUs) convert into common stock on a one-for-one basis.

The PSUs vested upon the achievement of the applicable stock price hurdle, defined as the closing price per share exceeding $46.25 for any twenty (20) consecutive trading day period during the performance period and the reporting person's continuous employment through December 13, 2025.

The remaining PSUs are eligible to vest based on achievement of four pre-established stock price hurdles (each, a "Stock Price Hurdle") during a seven-year performance period beginning on December 13, 2022. Each of the four tranches of PSUs will vest on the later of the date that the applicable Stock Price Hurdle is achieved or the fourth, fifth, sixth and seventh anniversaries of the grant date.

Performance stock units ("PSUs) convert into common stock on a one-for-one basis.

The PSUs vested upon the achievement of the applicable stock price hurdle, defined as the closing price per share exceeding $46.25 for any twenty (20) consecutive trading day period during the performance period and the reporting person's continuous employment through December 13, 2025.

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 PSUs and does not represent a sale.

Represents transfers of Common Stock shares by the reporting person to the trusts in connection with a private exchange transaction of Common Stock shares and cash for property of equal value.

Represents transfers of Common Stock shares by the reporting person to the trusts in connection with a private exchange transaction of Common Stock shares and cash for property of equal value.

Due to the reporting person's relationship with the beneficiaries and trustee of the Sarah Margaret Davison Trust, the William Charles Davison Trust and the James Ellis Davison, III Trust (collectively, the "Trusts"), the reporting person could be deemed to have an indirect pecuniary interest in the Common Stock shares that are beneficially owned by the Trusts. The reporting person disclaims beneficial ownership of these Common Stock shares except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these Common Stock shares for purposes of Section 16 or for any other purpose.

Represents transfers of Common Stock shares by the reporting person to the trusts in connection with a private exchange transaction of Common Stock shares and cash for property of equal value.

Due to the reporting person's relationship with the beneficiaries and trustee of the Sarah Margaret Davison Trust, the William Charles Davison Trust and the James Ellis Davison, III Trust (collectively, the "Trusts"), the reporting person could be deemed to have an indirect pecuniary interest in the Common Stock shares that are beneficially owned by the Trusts. The reporting person disclaims beneficial ownership of these Common Stock shares except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these Common Stock shares for purposes of Section 16 or for any other purpose.

Represents transfers of Common Stock shares by the reporting person to the trusts in connection with a private exchange transaction of Common Stock shares and cash for property of equal value.

These Common Stock shares are beneficially owned by the James E. and Margaret A. B. Davison Special Trust (the "Special Trust"). The reporting person could be deemed to have an indirect pecuniary interest in such Common Stock shares. The reporting person disclaims beneficial ownership of these Common Stock shares except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these Common Stock shares for purposes of Section 16 or for any other purpose.

Represents transfers of Common Stock shares by the reporting person to the trusts in connection with a private exchange transaction of Common Stock shares and cash for property of equal value.

Due to the reporting person's relationship with the beneficiaries and trustee of the Sarah Margaret Davison Trust, the William Charles Davison Trust and the James Ellis Davison, III Trust (collectively, the "Trusts"), the reporting person could be deemed to have an indirect pecuniary interest in the Common Stock shares that are beneficially owned by the Trusts. The reporting person disclaims beneficial ownership of these Common Stock shares except to the extent of his pecuniary interest therein, and this report shall not be deemed an admission that the reporting person is the beneficial owner of these Common Stock shares for purposes of Section 16 or for any other purpose.

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

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

Each restricted stock unit represents the contingent right to receive, at settlement, one share of the issuer's common stock or cash equal to the fair value thereof (calculated pursuant to the incentive agreement), as determined by the issuer.

Granted on May 20, 2026, vesting ratably over three years with the first vest date of May 20, 2027.

The reported shares are held by the reporting person's spouse and were acquired pursuant to restricted stock unit awards and employee stock purchase plan purchases granted in connection with the spouse's employment with Forth Insurance, a subsidiary of the issuer.

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

The reported shares are held by the reporting person's spouse and were acquired pursuant to restricted stock unit awards and employee stock purchase plan purchases granted in connection with the spouse's employment with Forth Insurance, a subsidiary of the issuer.

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.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

The reported shares are held by the reporting person's spouse and were acquired pursuant to restricted stock unit awards and employee stock purchase plan purchases granted in connection with the spouse's employment with Forth Insurance, a subsidiary of the issuer.

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.

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

Granted on May 19, 2023, vesting ratably over three years with the first vest date of May 20, 2024.

The reported shares are held by the reporting person's spouse and were acquired pursuant to restricted stock unit awards and employee stock purchase plan purchases granted in connection with the spouse's employment with Forth Insurance, a subsidiary of the issuer.

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

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

Includes 707 shares of Common Stock purchased pursuant to the Origin Bancorp, Inc. 2021 ESPP, for the purchase period of June 01, 2025 to May 31, 2026.

The reported shares are held by the reporting person's spouse and were acquired pursuant to restricted stock unit awards and employee stock purchase plan purchases granted in connection with the spouse's employment with Forth Insurance, a subsidiary of the issuer.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

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.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

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.

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

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

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

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.

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.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

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

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

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

Granted on May 20, 2024, vesting ratably over three years with the first vest date of May 20, 2025.

Represents a bona fide charitable donation/gift by the reporting person.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares of restricted stock granted to reporting person by the issuer as compensation for service as a director. The shares will vest on the date of the next annual meeting of stockholders following the grant date, unless the next annual meeting of stockholders occurs less than 50 weeks after the grant date in which case the shares will vest on April 28, 2027.

Represents shares that were purchased as part of a dividend reinvestment program.

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

Granted on February 20, 2025, vesting ratably over three years with the first vest date of February 20, 2026.

Each restricted stock unit represents the contingent right to receive, at settlement, one share of the issuer's common stock or cash equal to the fair value thereof (calculated pursuant to the incentive agreement), as determined by the issuer.

Granted on February 20, 2026, vesting ratably over three years with the first vest date of February 20, 2027.

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.

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

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

Granted on February 20, 2025, vesting ratably over three years with the first vest date of February 20, 2026.

Each restricted stock unit represents the contingent right to receive, at settlement, one share of the issuer's common stock or cash equal to the fair value thereof (calculated pursuant to the incentive agreement), as determined by the issuer.

Granted on February 20, 2026, vesting ratably over three years with the first vest date of February 20, 2027.

Each restricted stock unit represents the contingent right to receive, at settlement, one share of the issuer's common stock or cash equal to the fair value thereof (calculated pursuant to the incentive agreement), as determined by the issuer.

Granted on February 20, 2026, vesting ratably over three years with the first vest date of February 20, 2027.