| $350,000–1 million | SOONER COMPLETIONS INC | SHAWNEE, OK | BancFirst |
| $150,000–350,000 | SOONER MOBILE X-RAY, INC. | DUNCAN, OK | BancFirst |
| $150,000–350,000 | SOONER WHOLESALE FLORIST INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | SOUTH CENTRAL INDUSTRIES, INC | SHAWNEE, OK | BancFirst |
| $350,000–1 million | SOUTHERN BRUSH LLC | SPRING, TX | BancFirst |
| $150,000–350,000 | SOUTHERN MACHINE WORKS, INC. | DUNCAN, OK | BancFirst |
| $350,000–1 million | SOUTHERN OKLAHOMA AMBULANCE SERVICE | ARDMORE, OK | BancFirst |
| $150,000–350,000 | SOUTHERN OKLAHOMA SURGICAL CENTER, INC | ARDMORE, OK | BancFirst |
| $1–2 million | SOUTHWEST PULMONARY ASSOCIATES LLP | DALLAS, TX | BancFirst |
| $150,000–350,000 | SOUTHWEST THERAPY SOLUTIONS | MARLOW, OK | BancFirst |
| $350,000–1 million | SOUTHWEST TRAILERS & EQUIPMENT, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | SOUTHWIND AVIATION SUPPLY, LLC | CLERMONT, FL | BancFirst |
| $350,000–1 million | SOUTHWIND CONSTRUCTION SERVICES, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | SPECIAL ENERGY CORPORATION | STILLWATER, OK | BancFirst |
| $350,000–1 million | SPEECH SOFT SOLUTIONS, LLC | EDMOND, OK | BancFirst |
| $350,000–1 million | SPEEDY'S LLC | BROKEN ARROW, OK | BancFirst |
| $150,000–350,000 | SPOON DRUG, INC | SAND SPRINGS, OK | BancFirst |
| $350,000–1 million | ST. KATHARINE DREXEL RETIREMENT CENTER, INC. | EL RENO, OK | BancFirst |
| $350,000–1 million | ST. LOUIS WELL SERVICING COMPANY, LLC | SAINT LOUIS, OK | BancFirst |
| $150,000–350,000 | STABLES CAFE INC | GUTHRIE, OK | BancFirst |
| $150,000–350,000 | STANBRO HEALTHCARE GROUP | EDMOND, OK | BancFirst |
| $350,000–1 million | STARR OILFIELD SERVICES | TULSA, OK | BancFirst |
| $350,000–1 million | STEELECREEK MANAGEMENT, LLC | ADDISON, TX | BancFirst |
| $150,000–350,000 | STEPHENS COUNTY ABSTRACT CO. | DUNCAN, OK | BancFirst |
| $150,000–350,000 | STERLING MANAGEMENT GROUP, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | STEVE'S WHOLESALE DISTRIBUTORS INC | OKLAHOMA CITY, OK | BancFirst |
| $2–5 million | STIGLER HEALTH & WELLNESS CENTER, INC | STIGLER, OK | BancFirst |
| $2–5 million | STILLWATER DESIGNS & AUTIO, IN | STILLWATER, OK | BancFirst |
| $150,000–350,000 | STILLWELL LIMITED, INC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | STIMULATION PUMPING SERVICES INC | BLACKWELL, OK | BancFirst |
| $150,000–350,000 | STORAGE R US, LLC | LAWTON, OK | BancFirst |
| $150,000–350,000 | STORTS FAMILY DENTISTRY JTL PLLC | ARDMORE, OK | BancFirst |
| $150,000–350,000 | STOTTS ARCHAMBO MUEGGENBORG & BARCLAY PC | BARTLESVILLE, OK | BancFirst |
| $350,000–1 million | STOVER & ASSOCIATES, INC | STILLWATER, OK | BancFirst |
| $350,000–1 million | STRAIGHTAWAY DELIVERY, LLC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | STROINGPOINT AUTOGROUP LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | STRONG FAMILY FINANCIAL | JENKS, OK | BancFirst |
| $150,000–350,000 | STRONGHOLD PROTECTION GROUP | DUNCAN, OK | BancFirst |
| $150,000–350,000 | STRYKER INTEGRATED SOLUTIUONS, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | SUMMIT ENERGY MANAGEMENT, LLC | EDMOND, OK | BancFirst |
| $150,000–350,000 | SUMMIT MACHINE TOOL LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | SUMMIT PHYSICAL THERAPY & REHAB, PC | CLAREMORE, OK | BancFirst |
| $150,000–350,000 | SUNCREEK UNITED METHODIST CHURCH | ALLEN, TX | BancFirst |
| $150,000–350,000 | SUNNYBROOK CHRISTIAN CHURCH, INC | STILLWATER, OK | BancFirst |
| $350,000–1 million | SUNSHINE INDUSTRIES INC | ARDMORE, OK | BancFirst |
| $350,000–1 million | SUPER C MART INC. | NOBLE, OK | BancFirst |
| $1–2 million | SUPERIOR SECURITY & INVESTIGATIONS OF SHAWNEE, INC | SHAWNEE, OK | BancFirst |
| $350,000–1 million | SURGERY CENTER OF OKLAHOMA, LP | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | SWAGGIN WAGON, INC | TULSA, OK | BancFirst |
| $150,000–350,000 | SYNAPTIC RESOURCES OF AUSTIN, L.L.C. | AUSTIN, TX | BancFirst |
| $150,000–350,000 | SYNAPTIC RESOURCES OF FLORIDA, LLC | JACKSONVILLE, FL | BancFirst |
| $350,000–1 million | SYNAPTIC RESOURCES, L.L.C. | TULSA, OK | BancFirst |
| $350,000–1 million | T&L FOUNDRY, INC | GLENPOOL, OK | BancFirst |
| $350,000–1 million | T. MCDONALD CONSTRUCTION, INC. | EUFAULA, OK | BancFirst |
| $350,000–1 million | T.C. CRAIGHEAD & COMPANY, LLC | ARDMORE, OK | BancFirst |
| $1–2 million | TABER BUILT HOMES, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TABOR ENTERPRISES INC | WYNNEWOOD, OK | BancFirst |
| $350,000–1 million | TALON COMMERCIAL SERVICES | TULSA, OK | BancFirst |
| $150,000–350,000 | TAMASHII LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TDL ENTERPRISES L.L.C. | CHOCTAW, OK | BancFirst |
| $350,000–1 million | TERRA CONSTRUCTION INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | TERRASTAR INC | KINGFISHER, OK | BancFirst |
| $150,000–350,000 | TERRY BUILDING CO INC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | TEXAS ORTHOPAEDIC ASSOCIATES | DALLAS, TX | BancFirst |
| $150,000–350,000 | TEXOMA CONTRACTING, INC. | MUSKOGEE, OK | BancFirst |
| $350,000–1 million | TGD, LLC | OKLAHOMA CITY, OK | BancFirst |
| $1–2 million | THALIA IMAGING | PLANO, TX | BancFirst |
| $2–5 million | THE BAPTIST CONVENTION OF THE STATE OF OKLAHOMA | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE BIG TUNA, LLC | NORMAN, OK | BancFirst |
| $1–2 million | THE BLACK HAWK CASINO | SHAWNEE, OK | BancFirst |
| $150,000–350,000 | THE BREIT INVESTMENT CORPORATION | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE COVES MASTER ASSOCIATION, INC | AFTON, OK | BancFirst |
| $350,000–1 million | THE DAUBE COMPANY | ARDMORE, OK | BancFirst |
| $150,000–350,000 | THE EPISCOPAL DIOCESE OF DALLAS OF THE PROTESTANT EPISCOPAL CHURCH IN THE USA | DALLAS, TX | BancFirst |
| $1–2 million | THE EPISCOPAL DIOCESES OF OKLAHOMA, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE FRANK PHILLIPS FOUNDATION, INC. | BARTLESVILLE, OK | BancFirst |
| $150,000–350,000 | THE GARAGE-BRITTON LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE GINKGO GROUP LTD | DALLAS, TX | BancFirst |
| $150,000–350,000 | THE GOODEN GROUP, INC. | EDMOND, OK | BancFirst |
| $150,000–350,000 | THE HEFNER COMPANY, INC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE HIDEAWAY | STILLWATER, OK | BancFirst |
| $150,000–350,000 | THE HOGLE COMPANY | MUSKOGEE, OK | BancFirst |
| $150,000–350,000 | THE KEY, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE NEW KEY SCHOOL INC. | FORT WORTH, TX | BancFirst |
| $350,000–1 million | THE OAK HILL ACADEMY | DALLAS, TX | BancFirst |
| $150,000–350,000 | THE PAINTED DESERT, INC | OKLAHOMA CITY, OK | BancFirst |
| $350,000–1 million | THE PERINATAL CENTER, PLLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE PLYMOUTH GROUP, LLC | ENID, OK | BancFirst |
| $350,000–1 million | THE QUINTIN LITTLE COMPANY, INC. | ARDMORE, OK | BancFirst |
| $350,000–1 million | THE REFERRAL CENTER FOR ALCOHOL AND DRUG SERVICES OF CENTRAL OKLAHOMA, INC. | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE SAC AND FOX NATION CASINO-STROUD | STROUD, OK | BancFirst |
| $350,000–1 million | THE SETTLE FIRM, INC | DALLAS, TX | BancFirst |
| $150,000–350,000 | THE SOLAR INSTALLERS LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE TERRITORY, LLC | DUNCAN, OK | BancFirst |
| $1–2 million | THE TH ROGERS LUMBER COMPANY | EDMOND, OK | BancFirst |
| $150,000–350,000 | THE UPPER CRUST, LLC | OKLAHOMA CITY, OK | BancFirst |
| $150,000–350,000 | THE UPPER CRUST- EDMOND, L.L.C. | EDMOND, OK | BancFirst |
| $150,000–350,000 | THE UPPER CRUST-YALE VILLAGE LLC | TULSA, OK | BancFirst |
| $1–2 million | THE VOICE OF THE MARTYRS, INC. | BARTLESVILLE, OK | BancFirst |
| $2–5 million | THE YAFFE COMPANIES INCORPORATED | MUSKOGEE, OK | BancFirst |