| $350,000–1 million | SOUTHWESTERN PAYROLL SERVICE, INC. | TULSA, OK | Prosperity Bank |
| $150,000–350,000 | SP PARTNERS LLC | HOUSTON, TX | Prosperity Bank |
| $350,000–1 million | SPANISH OAKS GOLF CLUB LLC | Bee Cave, TX | Prosperity Bank |
| $350,000–1 million | SPARK LEARNING, LIMITED LIABILITY COMPANY | Austin, TX | Prosperity Bank |
| $150,000–350,000 | SPARTAN POOL AND PATIO LLC | Norman, OK | Prosperity Bank |
| $150,000–350,000 | SPARTAN POOL AND PATIO LLC | NORMAN, OK | Prosperity Bank |
| $150,000–350,000 | SPECIALTY DEALER ACCESSORY SERVICES LLC | Lubbock, TX | Prosperity Bank |
| $350,000–1 million | SPECIFIC SYSTEMS LLC | Tulsa, OK | Prosperity Bank |
| $1–2 million | SPECIFIC SYSTEMS, LLC | TULSA, OK | Prosperity Bank |
| $150,000–350,000 | SPEEDWAY ERECTION SERVICE COMPANY | San Antonio, TX | Prosperity Bank |
| $150,000–350,000 | SPEEDWAY ERECTION SERVICE COMPANY | San Antonio, TX | Prosperity Bank |
| $1–2 million | SPENCER OUTDOOR LLC | HOUSTON, TX | Prosperity Bank |
| $350,000–1 million | SPIARS ENGINEERING, INC. | PLANO, TX | Prosperity Bank |
| $350,000–1 million | SPIDER WALL SYSTEMS, INC. | New Braunfels, TX | Prosperity Bank |
| $350,000–1 million | SPIEGELBERG ENTERPRISES LTD | Lubbock, TX | Prosperity Bank |
| $350,000–1 million | SPIEGELBERG ENTERPRISES, LTD. | LUBBOCK, TX | Prosperity Bank |
| $150,000–350,000 | SPLASH SWIMMING PARTNERS LP | Cedar Park, TX | Prosperity Bank |
| $150,000–350,000 | SPLASH SWIMMING PARTNERS LP | Cedar Park, TX | Prosperity Bank |
| $150,000–350,000 | SPORTS & ORTHOPAEDIC GROUP OF DALLAS | Dallas, TX | Prosperity Bank |
| $150,000–350,000 | SPORTS AND ORTHOPAEDIC GROUP OF DALLAS | Dallas, TX | Prosperity Bank |
| $150,000–350,000 | SPORTS PHYSICIANS ORTHOPEDICS & REHABILITATION OF TEXAS PLLC | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | SPRUIELL DRILLING COMPANY INC | Iowa Park, TX | Prosperity Bank |
| $150,000–350,000 | SQUYRES & CO. LLP | Tyler, TX | Prosperity Bank |
| $2–5 million | SRM, INC | YUKON, OK | Prosperity Bank |
| $150,000–350,000 | SRUTI HOSPITALITY INC | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | SRUTI HOSPITALITY INC. | Houston, TX | Prosperity Bank |
| $350,000–1 million | ST ANDREWS PRESBYTERIAN CHURCH | Houston, TX | Prosperity Bank |
| $350,000–1 million | ST ANNE CATHOLIC SCHOOL | Tomball, TX | Prosperity Bank |
| $150,000–350,000 | ST JAMES EPISCOPAL SCHOOL OF DALLAS | Dallas, TX | Prosperity Bank |
| $1–2 million | ST MARK LUTHERAN CHURCH OF HOUSTON TEXAS | Houston, TX | Prosperity Bank |
| $350,000–1 million | ST MARKS WORLD ACQUISITION, LLC | NEW YORK, NY | Prosperity Bank |
| $150,000–350,000 | ST MICHAEL CATHOLIC SCHOOL | Weimar, TX | Prosperity Bank |
| $150,000–350,000 | ST PAUL CHILDREN'S FOUNDATION INC | Tyler, TX | Prosperity Bank |
| $150,000–350,000 | ST PHILIP CATHOLIC SCHOOL | El Campo, TX | Prosperity Bank |
| $150,000–350,000 | ST ROSE OF LIMA SCHOOL | Schulenburg, TX | Prosperity Bank |
| $1–2 million | ST THOMAS EPISCOPAL CHURCH AND SCHOOL | Houston, TX | Prosperity Bank |
| $150,000–350,000 | ST TIMOTHY CHRISTIAN ACADEMY | PLANO, TX | Prosperity Bank |
| $350,000–1 million | ST. ANDREWS PRESBYTERIAN CHURCH, U.S. HARRIS COUNTY, TEXAS | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | ST. ANTHONY CATHOLIC CHURCH | Bryan, TX | Prosperity Bank |
| $150,000–350,000 | ST. ANTHONY SCHOOL | COLUMBUS, TX | Prosperity Bank |
| $350,000–1 million | ST. FRANCIS DE SALES SCHOOL | Houston, TX | Prosperity Bank |
| $150,000–350,000 | ST. JAMES EPISCOPAL SCHOOL OF DALLAS | DALLAS, TX | Prosperity Bank |
| $350,000–1 million | ST. JOSEPH SCHOOLS, INC. | VICTORIA, TX | Prosperity Bank |
| $1–2 million | ST. MARK LUTHERAN CHURCH OF HOUSTON, TEXAS | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | ST. PAUL CHILDREN'S MEDICAL CORPORATION | Tyler, TX | Prosperity Bank |
| $150,000–350,000 | ST. PAUL LUTHERAN CHURCH OF NEW BRAUNFELS | New Braunfels, TX | Prosperity Bank |
| $150,000–350,000 | ST. PHILLIP CATHOLIC SCHOOL | EL CAMPO, TX | Prosperity Bank |
| $150,000–350,000 | ST. THERESA CATHOLIC CHURCH | Sugar Land, TX | Prosperity Bank |
| $1–2 million | STACY FAMILY ENTERPRISES, INC. | GRAPEVINE, TX | Prosperity Bank |
| $1–2 million | STAGE 29 PRODUCTIONS, LLC | LOS ANGELES, CA | Prosperity Bank |
| $150,000–350,000 | STAIRWAYS INC. | Houston, TX | Prosperity Bank |
| $150,000–350,000 | STANDARD TUBULAR SERVICES INC | College Station, TX | Prosperity Bank |
| $150,000–350,000 | STANDARD TUBULAR SERVICES INC. | College station, TX | Prosperity Bank |
| $350,000–1 million | STANDLEY FEED & SEED, INC. | MADISONVILLE, TX | Prosperity Bank |
| $150,000–350,000 | STAR CARE HOME HEALTH INC | Odessa, TX | Prosperity Bank |
| $150,000–350,000 | STAR HOSPICE INC | Odessa, TX | Prosperity Bank |
| $350,000–1 million | STARKE MACHINE COMPANY | Fort Worth, TX | Prosperity Bank |
| $350,000–1 million | STARKE MACHINE COMPANY | Fort Worth, TX | Prosperity Bank |
| $350,000–1 million | STARWOOD MORTORS, LLC | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | STARWOOD NRH LLC | Frisco, TX | Prosperity Bank |
| $150,000–350,000 | STATESIDE RIGHT OF WAY SERVICES, LLC | Dallas, TX | Prosperity Bank |
| $150,000–350,000 | STATION RR2 LLC | North Richland Hills, TX | Prosperity Bank |
| $350,000–1 million | STEALTH COMPLETION SERVICES LLC | Odessa, TX | Prosperity Bank |
| $350,000–1 million | STEALTH COMPLETION SERVICES LLC | Odessa, TX | Prosperity Bank |
| $150,000–350,000 | STEALTH TOWING AND RECOVERY SERVICES LLC | Azle, TX | Prosperity Bank |
| $150,000–350,000 | STEPHEN EDWARD BENYS | Houston, TX | Prosperity Bank |
| $150,000–350,000 | STEPHEN T SLIVA INC. | BAY CITY, TX | Prosperity Bank |
| $1–2 million | STEPHENS & JOHNSON OPERATING CO. | WICHITA FALLS, TX | Prosperity Bank |
| $350,000–1 million | STEPHENS ENGINEERING COMPANY | WICHITA FALLS, TX | Prosperity Bank |
| $150,000–350,000 | STERLING PRODUCTIONS, LLC | HOUSTON, TX | Prosperity Bank |
| $350,000–1 million | STERLING ROOF SYSTEMS, INC. | GARLAND, TX | Prosperity Bank |
| $150,000–350,000 | STEVE BENYS | Houston, TX | Prosperity Bank |
| $150,000–350,000 | STEWART LAWNCARE AND LANSCAPE INC | WYLIE, TX | Prosperity Bank |
| $150,000–350,000 | STING SERVICES LLC | MIDLAND, TX | Prosperity Bank |
| $350,000–1 million | STOEVER- PARKER ELECTRIC INC | Houston, TX | Prosperity Bank |
| $350,000–1 million | STOEVER- PARKER ELECTRIC, INC | Houston, TX | Prosperity Bank |
| $350,000–1 million | STONEHOLLOW HOMES, LLC | MCKINNEY, TX | Prosperity Bank |
| $150,000–350,000 | STORE SOURCE LLC | GRAND PRAIRIE, TX | Prosperity Bank |
| $150,000–350,000 | STOVALL GRANDEY & ALLEN LLP | Fort Worth, TX | Prosperity Bank |
| $150,000–350,000 | STOVALL, GRANDEY & ALLEN, LLP | FORT WORTH, TX | Prosperity Bank |
| $150,000–350,000 | STRATFORD LAND MANAGER, LP | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | STRATUS DOMINION ANESTHESIA ASSOCIATES PLLC | Dallas, TX | Prosperity Bank |
| $150,000–350,000 | STRATUS DOMINION ANESTHESIA ASSOCS PLLC | Dallas, TX | Prosperity Bank |
| $350,000–1 million | STRUTTON PLUMBING COMPANY INC | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | STS WAREHOUSE LLC | Austin, TX | Prosperity Bank |
| $150,000–350,000 | STS WAREHOUSE LLC | Austin, TX | Prosperity Bank |
| $150,000–350,000 | STUDENT LEADERSHIP UNIVERSITY, INC. | ORLANDO, FL | Prosperity Bank |
| $350,000–1 million | STUDIO 8 ARCHITECTS INC | AUSTIN, TX | Prosperity Bank |
| $150,000–350,000 | STUDIO MET, PLLC | Houston, TX | Prosperity Bank |
| $350,000–1 million | SUBS WORLD INC. | CORPUS CHRISTI, TX | Prosperity Bank |
| $350,000–1 million | SUBSEA PARTNERS LLC | Houston, TX | Prosperity Bank |
| $350,000–1 million | SUBSEA PARTNERS, LLC | HOUSTON, TX | Prosperity Bank |
| $350,000–1 million | SUGAR LAND BAPTIST CHURCH | SUGAR LAND, TX | Prosperity Bank |
| $1–2 million | SUMMIT PORTRAITS LLC | Plano, TX | Prosperity Bank |
| $1–2 million | SUMMIT PORTRAITS, LLC | PLANO, TX | Prosperity Bank |
| $350,000–1 million | SUMMIT TECHNOLOGY AFFILIATES LLC | Edmond, OK | Prosperity Bank |
| $350,000–1 million | SUMMIT TECHNOLOGY AFFILIATES, LLC | EDMOND, OK | Prosperity Bank |
| $1–2 million | SUNBELT POOLS, INC | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | SUNDANCER GRILL LLC | Austin, TX | Prosperity Bank |
| $150,000–350,000 | SUNGU FUNHIRO | Midland, TX | Prosperity Bank |