X0609 4 2026-08-20 0 0001516912 Origin Bancorp, Inc. OBK 0001857896 Farr Meryl Kennedy false 500 SOUTH SERVICE ROAD EAST RUSTON LA 71270 1 0 0 0 0 Common Stock 2026-08-20 4 M 0 407 A 3205 I By Spouse Common Stock 7663 D Restricted Stock Units 2026-08-20 4 M 0 407 0 D Common Stock 407 813 I By Spouse 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 purchases under employee stock purchase plan in connection with the spouse's employment with Forth Insurance, a subsidiary of the issuer. Granted on August 20, 2025, vesting ratably over three years with the first vest date of August 20, 2026. /s/ Drake Mills, as Attorney-in-Fact 2026-08-21