| $350,000–1 million | OKLAHOMA CHILLER CORPORATION | TULSA, OK | BancFirst |
| $150,000–350,000 | OKLAHOMA CITY EQUINE CLINIC PC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | OKLAHOMA CONTEMPORARY ARTS CENTER | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | OKLAHOMA CYCLES | SHAWNEE, OK | BancFirst |
| $5–10 million | OKLAHOMA FARM BUREAU MUTUAL INSURANCE CO. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | OKLAHOMA HALL OF FAME | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | OKLAHOMA HEALTHCARE SERVICES, INC. | BROKEN ARROW, OK | BancFirst |
| $350,000–1 million | OKLAHOMA LUBE ASSOCIATES LP | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | OKLAHOMA NATIONAL STOCK YARDS COMPANY | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | OKLAHOMA PREMIER SIGN COMPANY LLC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | OKLAHOMA ROOFING & SHEET METAL LLC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | OKLAHOMA STATE FAIR, INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | OKLAHOMA STATE SCHOOL BOARDS ASSOCIATION INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | OLD MILTON SENIOR HOLDING LLC | ALPHARETTA, GA | BancFirst |
| $150,000–350,000 | ONE ELECTRIC LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | ONTRACK HR LLC | ADDISON, TX | BancFirst |
| $1–2 million | OPS SALES COMPANY | DEWEY, OK | BancFirst |
| $150,000–350,000 | ORIGIN RESOURCE GROUP HOLDINGS, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | ORR CONSTRUCTION, INC. | DAVENPORT, OK | BancFirst |
| $350,000–1 million | OU E. SUITES, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | P.A.D.D., INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PACKARD NEW AMERICAN KITCHEN LP | NORMAN, OK | BancFirst |
| $150,000–350,000 | PARK MANAGEMENT COMPANY, INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | PARTNERCOMM, INC. | ARLINGTON, TX | BancFirst |
| $150,000–350,000 | PASCAL AUGHTRY & ASSOCIATES, PC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PASEO GRILL, L.L.C. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | PATCO ELECTRICAL SERVICES, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PATHWAYS PROFESSIONAL COUNSELING LLC | EDMOND, OK | BancFirst |
| $350,000–1 million | PATRIOT GOLF COURSE, LLC | OWASSO, OK | BancFirst |
| $150,000–350,000 | PAYNE AND SMITH, LLC | DALLAS, TX | BancFirst |
| $150,000–350,000 | PDI DOOR & HARDWARE, LLC | OWASSO, OK | BancFirst |
| $350,000–1 million | PEARL MANAGEMENT, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | PEDIATRIC OPHTHALMOLOGY INC | TULSA, OK | BancFirst |
| $150,000–350,000 | PERFORMANCE COURSE | ALLEN, TX | BancFirst |
| $150,000–350,000 | PERIPHERAL SYSTEMS, INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | PEROT MUSEUM OF NATURE AND SCIENCE | DALLAS, TX | BancFirst |
| $150,000–350,000 | PERRY BROADCASTING COMPANY, INC. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | PETROLEUM CLUB OF OKLAHOMA CITY, INC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | PHILADELPHIA CHURCH OF GOD, INC | EDMOND, OK | BancFirst |
| $150,000–350,000 | PHILLIPS PRECISION MACHINING | BARTLESVILLE, OK | BancFirst |
| $150,000–350,000 | PHOENIX DESIGN & MANUFACTURING, LLC | OKLAHOMA CITY, OK | BancFirst |
| $2–5 million | PHOENIX HEALTHCARE LLC | TULSA, OK | BancFirst |
| $350,000–1 million | PHOENIX REHAB, LLC | TULSA, OK | BancFirst |
| $150,000–350,000 | PINNACLE DESIGN GROUP, LLC | NORMAN, OK | BancFirst |
| $350,000–1 million | PITZER'S LAWN MANAGEMENT INC | EDMOND, OK | BancFirst |
| $350,000–1 million | PIVOT, INC. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | PIXLEY LUMBER | CLAREMORE, OK | BancFirst |
| $350,000–1 million | PLATINUM CROSS WELDING INC | OKEMAH, OK | BancFirst |
| $1–2 million | PLATINUM STEVEDORING INC | GALENA PARK, TX | BancFirst |
| $350,000–1 million | PLAYPORT GAMING SYSTEMS, LLC | DALLAS, TX | BancFirst |
| $350,000–1 million | PLEASANT VALLEY HEALTH CARE CENTER INC | MUSKOGEE, OK | BancFirst |
| $150,000–350,000 | PO-GO'S LIQUORS, INC. | DALLAS, TX | BancFirst |
| $150,000–350,000 | PORT CITY BODY SHOP INC | MUSKOGEE, OK | BancFirst |
| $150,000–350,000 | POWERFOAM LLC | MIDLOTHIAN, TX | BancFirst |
| $150,000–350,000 | POWERSPORTS CONSULTING SOLUTIONS | CLAREMORE, OK | BancFirst |
| $150,000–350,000 | PRBP, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PRECISION PHYSICAL THERAPY, LLC | HARRAH, OK | BancFirst |
| $150,000–350,000 | PREFERRED MATERIAL HANDLING INC. | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | PREMIER TRADING AND TRANSPORTATION LLC | CUSHING, OK | BancFirst |
| $1–2 million | PREMIER WASTE SERVICES, LLC | DALLAS, TX | BancFirst |
| $150,000–350,000 | PREMIUM BEEF FEEDERS, LLC | LONE WOLF, OK | BancFirst |
| $150,000–350,000 | PRESTON ROAD PHARMACY | DALLAS, TX | BancFirst |
| $1–2 million | PRICE EDWARDS & COMPANY, INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PRIME PALLET, LLC | MUSKOGEE, OK | BancFirst |
| $150,000–350,000 | PROFESSIONAL HEALTHCARE SOLUTIONS, LLC | YUKON, OK | BancFirst |
| $150,000–350,000 | PROFESSIONAL VALUE INTERNET SERVICES, INC | STILLWATER, OK | BancFirst |
| $150,000–350,000 | PROGRESSIVE ENERGY, LLC | ARDMORE, OK | BancFirst |
| $150,000–350,000 | PROGRESSIVE MACHINE TOOLS | TULSA, OK | BancFirst |
| $150,000–350,000 | PROJECT H.E.A.R.T., INC | SHAWNEE, OK | BancFirst |
| $150,000–350,000 | PRUDHOM HEATING & AIR CONDITIONING, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | PRYOR VETERINARY HOSPITAL, INC | PRYOR, OK | BancFirst |
| $150,000–350,000 | PUB W - S OKC, L.L.C | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PUB W MEMORIAL RD LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | PUB W- 61ST & YALE, L.L.C. | TULSA, OK | BancFirst |
| $150,000–350,000 | PUB W- EDMOND, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | PUBPUB, LLC | OKLAHOMA CITY, OK | BancFirst |
| $2–5 million | PYLANT MEDICAL, LTD. | GRAPEVINE, TX | BancFirst |
| $1–2 million | Q.B. JOHNSON MANUFACTURING INC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | QUAD, LLC | TAHLEQUAH, OK | BancFirst |
| $350,000–1 million | QUAIL RIDGE LIVING CENTER | COLCORD, OK | BancFirst |
| $150,000–350,000 | QUALGEN, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | QUALITY HEATING & COOLING, LLC | GLENPOOL, OK | BancFirst |
| $150,000–350,000 | QUALITY SLEEP SPECIALISTS LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | QUANTEM LABORATORIES LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | R & M PIPELINE SERVICES INC. | DRUMMOND, OK | BancFirst |
| $350,000–1 million | R D EISEMAN, INC | DALLAS, TX | BancFirst |
| $1–2 million | R WAREHOUSING & PORT SERVICES, INC. | HOUSTON, TX | BancFirst |
| $350,000–1 million | R. D. WILLIAMS & COMPANY | ARDMORE, OK | BancFirst |
| $150,000–350,000 | R.J. WHITTAKER & SONS INC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | R.K. BLACK INC. | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | RAINMAKER SALES, INC. | SHAWNEE, OK | BancFirst |
| $350,000–1 million | RAM ENERGY LLC | TULSA, OK | BancFirst |
| $350,000–1 million | RAMON FRANKLIN, LLC | FORT WORTH, TX | BancFirst |
| $150,000–350,000 | RANDALL'S TEMPERATURE CONTROL SPECIALISTS, INC. | MOORE, OK | BancFirst |
| $150,000–350,000 | RANDY BOWEN CHEVROLET, INC | CHANDLER, OK | BancFirst |
| $150,000–350,000 | RANGEL'S CONCRETE LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | RAY CLOUR WELL SERVICING, INC. | RATLIFF CITY, OK | BancFirst |
| $150,000–350,000 | RC MINERALS 2015, LLC | AUSTIN, TX | BancFirst |
| $2–5 million | REAL FOUNDATION, INC | DALLAS, TX | BancFirst |
| $350,000–1 million | RECOIL RESOURCES | HOUSTON, TX | BancFirst |