| $150,000–350,000 | THERMAFOAM OPERATING LLC | HILLSBORO, TX | BancFirst |
| $1–2 million | THINK ABILITY, INC | DUNCAN, OK | BancFirst |
| $150,000–350,000 | THOMAS OIL TOOLS, LLC | DUNCAN, OK | BancFirst |
| $350,000–1 million | THORNTON GERMAN IMPORTS, LLC | TULSA, OK | BancFirst |
| $350,000–1 million | THORNTON MOTORS ON YALE, LLC | TULSA, OK | BancFirst |
| $350,000–1 million | THRICE ENERGY SOLUTIONS LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TIAMO OKLAHOMA CITY, LLC | OKLAHOMA CITY, OK | BancFirst |
| $2–5 million | TIERNEY TITLE LLC | WASHINGTON, OK | BancFirst |
| $150,000–350,000 | TIETSORT LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TIGER TRUCKS INCORPORATED | SEMINOLE, OK | BancFirst |
| $350,000–1 million | TILLEY TRUCKING, LLC | DUNCAN, OK | BancFirst |
| $150,000–350,000 | TIMBERCRAFT HOMES, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | TIMCO BLASTING AND COATINGS, INC | BRISTOW, OK | BancFirst |
| $350,000–1 million | TITAN CONSTRUCTION, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TITAN ES, LLC | MOORE, OK | BancFirst |
| $350,000–1 million | TITAN POWERLINE, LLC | DUNCAN, OK | BancFirst |
| $350,000–1 million | TKR, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TKR-CATOOSA, LLC | CATOOSA, OK | BancFirst |
| $350,000–1 million | TKR-WINSTAR, LLC | THACKERVILLE, OK | BancFirst |
| $150,000–350,000 | TMC CONSTRUCTION COMPANY, INC | PIEDMONT, OK | BancFirst |
| $350,000–1 million | TOTAH COMMUNICATIONS, INC. | OCHELATA, OK | BancFirst |
| $150,000–350,000 | TOUCAN PRODUCTIONS, INC. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | TOUCHSTONE, BERNAYS, JOHNSTON, BEALL, SMITH & STOLLENWERCK, LLP | DALLAS, TX | BancFirst |
| $150,000–350,000 | TRAFFIC ENGINEERING CONSULTANTS, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TRANS-TECH LLC | EL RENO, OK | BancFirst |
| $2–5 million | TRANSFORMATION 5701 LLC | HOUSTON, TX | BancFirst |
| $150,000–350,000 | TRAVIS HOSPITALITY LLC | DALLAS, TX | BancFirst |
| $350,000–1 million | TREK RESOURCES, INC | DALLAS, TX | BancFirst |
| $150,000–350,000 | TRINITY CHURCH INTERNATIONAL, INC | DALLAS, TX | BancFirst |
| $150,000–350,000 | TRIPOWER RESOURCES, LLC | ARDMORE, OK | BancFirst |
| $150,000–350,000 | TRUCK DOCTOR INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TRUE SOLUTIONS MANAGEMENT & CONSULTING, LLC | SHAWNEE, OK | BancFirst |
| $350,000–1 million | TULSA AIR SPECIALST INC | TULSA, OK | BancFirst |
| $350,000–1 million | TULSA BEEF & PROVISION COMPANY INC. | TULSA, OK | BancFirst |
| $350,000–1 million | TULSA HABITAT FOR HUMANITY, INC. | TULSA, OK | BancFirst |
| $1–2 million | TULSA JEWISH COMMUNITY RETIREMENT AND HEALTH CARE CENTER, INC | TULSA, OK | BancFirst |
| $150,000–350,000 | TULSA METAL FINISHING COMPANY | TULSA, OK | BancFirst |
| $150,000–350,000 | TWIGS, LLC | NORMAN, OK | BancFirst |
| $1–2 million | TWIN CITIES READY MIX, INC. | MCALESTER, OK | BancFirst |
| $150,000–350,000 | TWO FROGS GRILL, INC. | ARDMORE, OK | BancFirst |
| $150,000–350,000 | ULTRA THIN INC. | MOORE, OK | BancFirst |
| $350,000–1 million | UNITED DYNAMICS INC. | SHAWNEE, OK | BancFirst |
| $5–10 million | UNITED PETROLEUM TRANSPORTS, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | UNITED TRENCHING | MUSTANG, OK | BancFirst |
| $350,000–1 million | UNIVERSAL FIDELITY LIFE INSURANCE COMPANY | OKLAHOMA CITY, OK | BancFirst |
| $5–10 million | UNIVERSAL FIELD SERVICES, INC | TULSA, OK | BancFirst |
| $350,000–1 million | UNIVERSAL SURVEYING AND MAPPING, LLC | STILLWATER, OK | BancFirst |
| $350,000–1 million | URGENT-MED LLC | DUNCAN, OK | BancFirst |
| $150,000–350,000 | UTILITY CABLE COMMUNICATIONS INC. | CLAREMORE, OK | BancFirst |
| $350,000–1 million | UTILITY TRAILER OF DALLAS, INC. | DALLAS, TX | BancFirst |
| $1–2 million | VALIR HEALTH, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | VALIR PACE FOUNDATION, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | VALOR ENERGY SERVICE, LLC | EDMOND, OK | BancFirst |
| $2–5 million | VAN EATON READY MIX, INC. | SHAWNEE, OK | BancFirst |
| $350,000–1 million | VAN HOOSE CONSTRUCTION CO., INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | VARNER & VARNER | BRISTOW, OK | BancFirst |
| $150,000–350,000 | VECTA OIL & GAS LTD | LAKEWOOD, CO | BancFirst |
| $1–2 million | VENT-A-HOOD, LTD | RICHARDSON, TX | BancFirst |
| $150,000–350,000 | VERNON'S PLUMBING, HEATING & AIR CONDITIONING, INC. | ARDMORE, OK | BancFirst |
| $150,000–350,000 | VIACHEM, LTD | PLANO, TX | BancFirst |
| $150,000–350,000 | VIACORE NUTRITION, LLC | KINGFISHER, OK | BancFirst |
| $150,000–350,000 | VICEROY INVESTMENTS, LLC | DALLAS, TX | BancFirst |
| $150,000–350,000 | VIDEO REVOLUTION, INC | TULSA, OK | BancFirst |
| $150,000–350,000 | VIKING PIPE AND SUPPLY LLC | EL RENO, OK | BancFirst |
| $150,000–350,000 | VILLASENORSTILL LLC | STILLWATER, OK | BancFirst |
| $150,000–350,000 | VINTAGE WASHES LTD | DALLAS, TX | BancFirst |
| $150,000–350,000 | VIRIDIAN COFFEE LLC | DUNCAN, OK | BancFirst |
| $350,000–1 million | VOYAGE LTC, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | VOYAGE LTC-SKYVIEW, LLC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | W.B. CARRELL MEMORIAL CLINIC | DALLAS, TX | BancFirst |
| $1–2 million | WAGONER COMMUNITY HOSPITAL | WAGONER, OK | BancFirst |
| $150,000–350,000 | WAGONER COUNTY ABSTRACT COMPANY LLC | WAGONER, OK | BancFirst |
| $150,000–350,000 | WALKER, FERGUSON & FERGUSON | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | WALLACE ACID-FRAC, LLC | SEMINOLE, OK | BancFirst |
| $350,000–1 million | WALTER DUNCAN, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | WARWICK ANIMAL HOSPITAL, PLLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | WASHINGTON COUNTY CHILD CARE FOUNDATION | BARTLESVILLE, OK | BancFirst |
| $150,000–350,000 | WASHTENAW INVESTMENTS, LLC | NORTH LITTLE ROCK, AR | BancFirst |
| $150,000–350,000 | WASTESOLUTIONS, LLC | LAWTON, OK | BancFirst |
| $350,000–1 million | WEBSTER SHIPPING, INC | PONCA CITY, OK | BancFirst |
| $2–5 million | WESTERN INDUSTRIES CORPORATION | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | WESTERN OKLAHOMA CAFES II LLC | YUKON, OK | BancFirst |
| $150,000–350,000 | WESTERN OKLAHOMA CAFES III | MOORE, OK | BancFirst |
| $150,000–350,000 | WESTERN OKLAHOMA CAFES IV LLC | EDMOND, OK | BancFirst |
| $1–2 million | WESTMINSTER SCHOOL, INC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | WHITE HAWK ENGINEERING & DESIGN, LLC | MOORE, OK | BancFirst |
| $150,000–350,000 | WHITE SURVEYING COMPANY, INC. | TULSA, OK | BancFirst |
| $1–2 million | WICHITA SDI, LLC | PRAGUE, OK | BancFirst |
| $350,000–1 million | WICKS & ASSCIATES INDUSTRIAL LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | WIGGINS SEWELL & OGLETREE | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | WILCO PROPERTIES | DALLAS, TX | BancFirst |
| $150,000–350,000 | WILLIAMS, BOX, FORSHEE & BULLARD PC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | WILSON - BREIT, INC. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | WILSPEC TECHNOLOGIES INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | WINEGARDNER, INC | SHAWNEE, OK | BancFirst |
| $150,000–350,000 | WINSTON'S, LLC | NORMAN, OK | BancFirst |
| $150,000–350,000 | WIRING SOLUTIONS, LLC | MOORE, OK | BancFirst |
| $150,000–350,000 | WOLF WAREHOUSE INC | TULSA, OK | BancFirst |
| $150,000–350,000 | WOLFE LIVING CENTER ASSOCIATION | HARRAH, OK | BancFirst |
| $350,000–1 million | WOMEN'S HEALTHCARE OF NORMAN LLC | NORMAN, OK | BancFirst |