144 0001042873 XXXXXXXX LIVE 0000760498 BANCFIRST CORP /OK/ 000-14384 100 NORTH BROADWAY AVE OKLAHOMA CITY OK 73102-8401 4052701000 RAINBOLT DAVID E Director 10% Stockholder Common Stock BancFirst Trust

100 N. Broadway AVE Oklahoma City OK 73102

225000 27002250.00 33575976 04/20/2026 Nasdaq Global Market Common Stock 02/03/2026 Shares gifted to David and Kim Rainbolt Foundation David E. Rainbolt N 225000 02/03/2026 shares were gifted to the Foundation Y The shares being sold are held in the David and Kim Foundation. These shares were gifted to the foundation on February 3, 2026. David votes these shares and therefore is an indirect holder of the shares for the foundation. 04/17/2026 by POA from David E. Rainbolt