| $150,000–350,000 | SHUMAN MANAGEMENT SERVICES INC. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SIAM LOGISTICS, LLC | HURST, TX | Frost Bank |
| $350,000–1 million | SICO, HOELSCHER & HARRIS, LLP | CORPUS CHRISTI, TX | Frost Bank |
| $150,000–350,000 | SIGMA MENTAL HEALTH URGENT CARE, LLC | SAN ANTONIO, TX | Frost Bank |
| $1–2 million | SIGMA RELOCATION GROUP, LLC | IRVING, TX | Frost Bank |
| $150,000–350,000 | SIGMA SURVEILLANCE INC | CARROLLTON, TX | Frost Bank |
| $150,000–350,000 | SIGNATURE BIOLOGICS LLC | DALLAS, TX | Frost Bank |
| $1–2 million | SIGNET HEALTH CORPORATION | DENTON, TX | Frost Bank |
| $350,000–1 million | SILSBEE OAKS HEALTH CARE, L.L.P. | SILSBEE, TX | Frost Bank |
| $350,000–1 million | SILVER HEALTHCARE, INC | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SILVERADO INTERESTS, LLC | DALLAS, TX | Frost Bank |
| $150,000–350,000 | SIMEM AMERICA CORPORATION | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SIMMONS & FLETCHER PC | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SIMMONS CUSTOM RIGGING LLC | KEMAH, TX | Frost Bank |
| $350,000–1 million | SIMON WESLEY HENDERSHOT III ATTORNEYS AT LAW PC | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SINCLAIR LAND SURVEYING, INC. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SINGULARITY CONSULTING LLC | AUSTIN, TX | Frost Bank |
| $350,000–1 million | SINUS & SNORING SPECIALISTS PA | AUSTIN, TX | Frost Bank |
| $150,000–350,000 | SIO2 FABRICATING | IRVING, TX | Frost Bank |
| $350,000–1 million | SIPS CONSULTS CORP | DALLAS, TX | Frost Bank |
| $350,000–1 million | SIR ENTERPRISES, INC. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SISEMORE LAW FIRM P.C. PLLC | FORT WORTH, TX | Frost Bank |
| $150,000–350,000 | SISK GRATINGS INC. | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SISTEMA INFANTIL TELETONUSA | SAN ANTONIO, TX | Frost Bank |
| $1–2 million | SITE LANDSCAPE DEVELOPMENT, LLC | LEWISVILLE, TX | Frost Bank |
| $350,000–1 million | SKIERMONT DERBY LLP | DALLAS, TX | Frost Bank |
| $350,000–1 million | SKILLED CRAFTSMEN OF TEXAS, INC. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SKY HELICOPTER, INCORPORATED | GARLAND, TX | Frost Bank |
| $150,000–350,000 | SKYLARK WIRELESS, LLC | HOUSTON, TX | Frost Bank |
| $2–5 million | SLACK & CO CONTRACTING INC | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SLACK DAVIS SANGER LLP | AUSTIN, TX | Frost Bank |
| $150,000–350,000 | SLADE SHIPPING INC | KATY, TX | Frost Bank |
| $350,000–1 million | SLATER CONTROLS INC | MIDLAND, TX | Frost Bank |
| $150,000–350,000 | SLATES HARWELL LLP | DALLAS, TX | Frost Bank |
| $350,000–1 million | SLBM, LLC | SUGAR LAND, TX | Frost Bank |
| $350,000–1 million | SLICKROCK LAND SERVICES, LLC | MIDLAND, TX | Frost Bank |
| $150,000–350,000 | SM LOGISTICS INC | IRVING, TX | Frost Bank |
| $150,000–350,000 | SMART PIPE COMPANY INC. | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SMART RAGS RECYCLERS INC | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SMARTCOM TELEPHONE L.L.C. | MCALLEN, TX | Frost Bank |
| $150,000–350,000 | SMITH & COLE DENTISTRY PLLC | NEW BRAUNFELS, TX | Frost Bank |
| $350,000–1 million | SMITH CUSTOM MASONRY, INC. | ARLINGTON, TX | Frost Bank |
| $150,000–350,000 | SMITH FANKHAUSER VOIGT & WATSON, PLLC | MCALLEN, TX | Frost Bank |
| $350,000–1 million | SMITH MEDICAL STAFFING, LLC | GRAPEVINE, TX | Frost Bank |
| $5–10 million | SMITH TEMPORARIES, INC. | GRAPEVINE, TX | Frost Bank |
| $350,000–1 million | SMITH-O'HARA ENTERPRISES, INC. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SMOKEY DENMARK SAUSAGE COMPANY | AUSTIN, TX | Frost Bank |
| $150,000–350,000 | SMOKEY JOHN'S INC. | DALLAS, TX | Frost Bank |
| $350,000–1 million | SMS PRECISION TECH LLC | TOMBALL, TX | Frost Bank |
| $150,000–350,000 | SNELL & ASSOCIATES LAND SURVEYORS INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SNELSON SERVICES COMPANY | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SNF, INC. | WEATHERFORD, TX | Frost Bank |
| $150,000–350,000 | SOC GROUP, INC. | CARROLLTON, TX | Frost Bank |
| $150,000–350,000 | SOCIAL FACTOR INC | FORT WORTH, TX | Frost Bank |
| $150,000–350,000 | SOCIAL MOTION, INC. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SOFT SUDS, INC. | MIDLAND, TX | Frost Bank |
| $350,000–1 million | SOL SCHWARTZ & ASSOCIATES, P.C. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOLARCRAFT, INC. | SUGAR LAND, TX | Frost Bank |
| $350,000–1 million | SOLID IT NETWORKS, INC. | HOUSTON, TX | Frost Bank |
| $2–5 million | SOLON, INC. | DESOTO, TX | Frost Bank |
| $150,000–350,000 | SONLIGHT CLEANING SERVICE, INC | HALTOM CITY, TX | Frost Bank |
| $150,000–350,000 | SONOVET, INC | NEW BRAUNFELS, TX | Frost Bank |
| $150,000–350,000 | SONTERRA DERMATOLOGY, PLLC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SORT-RITE INTERNATIONAL, INC. | HARLINGEN, TX | Frost Bank |
| $350,000–1 million | SOUR DUCK HOSPITALITY LLC | AUSTIN, TX | Frost Bank |
| $350,000–1 million | SOUTH ALAMO MEDICAL GROUP PA | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH AUSTIN MARINE II, INC. | AUSTIN, TX | Frost Bank |
| $150,000–350,000 | SOUTH CENTRAL TEXAS MANAGEMENT, INC. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH COAST FIRE & SAFETY INC. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SOUTH PADRE ISLAND PEDIATRIC CENTER PA | CORPUS CHRISTI, TX | Frost Bank |
| $350,000–1 million | SOUTH PARK FAMILY DENTAL CARE LLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH TEXAS BRAIN AND SPINE CENTER | CORPUS CHRISTI, TX | Frost Bank |
| $150,000–350,000 | SOUTH TEXAS CLINIC FOR PAIN MANAGEMENT, PA | MCALLEN, TX | Frost Bank |
| $150,000–350,000 | SOUTH TEXAS DRYWALL & CONSTRUCTION INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SOUTH TEXAS ENT CONSULTANTS, PA | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH TEXAS KIDNEY SPECIALISTS, P.A. | MCALLEN, TX | Frost Bank |
| $5–10 million | SOUTH TEXAS ONCOLOGY & HEMATOLOGY PLLC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SOUTH TEXAS PATHOLOGY ASSOCIATES, LLP | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SOUTH TEXAS SKIN CANCER CENTER LLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH TEXAS TRUCK CENTERS LLC | CORPUS CHRISTI, TX | Frost Bank |
| $150,000–350,000 | SOUTH TEXAS VISION ASSOCIATES PA | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTHAMPTON MONTESSORI SCHOOL | HOUSTON, TX | Frost Bank |
| $1–2 million | SOUTHEAST FIRE PROTECTION, L.P. | HOUSTON, TX | Frost Bank |
| $150,000–350,000 | SOUTHEAST SOUTH TEXAS CENTER FOR PEDIATRIC CARE, PA | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SOUTHER EQUIPMENT SALES, INC. | DALLAS, TX | Frost Bank |
| $1–2 million | SOUTHERN BLEACHER HOLDINGS | GRAHAM, TX | Frost Bank |
| $350,000–1 million | SOUTHSIDE CHILDREN'S DENTAL CENTER PC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SOUTHTEX STEEL CONSTRUCTION, INC | NEW BRAUNFELS, TX | Frost Bank |
| $150,000–350,000 | SOUTHWEST AIR EQUIPMENT, INC. | FORT WORTH, TX | Frost Bank |
| $1–2 million | SOUTHWEST ASTHMA & ALLERGY ASSOCIATES | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST AUSTIN CATHOLIC SCHOOL | AUSTIN, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST AUTOMATED SECURITY, INC. | DALLAS, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST CHILDREN'S CENTER, P.A. | SAN ANTONIO, TX | Frost Bank |
| $1–2 million | SOUTHWEST CHRISTIAN SCHOOL, INC | FORT WORTH, TX | Frost Bank |
| $150,000–350,000 | SOUTHWEST COMMUNITY BAPTIST CHURCH, INC. | HOUSTON, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST COMPANIES LTD. | SAN ANTONIO, TX | Frost Bank |
| $5–10 million | SOUTHWEST ELECTRICAL CONTRACTING SERVICES LTD | CONVERSE, TX | Frost Bank |
| $150,000–350,000 | SOUTHWEST MATERIALS HANDLING CO | DALLAS, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST MATTRESS SALES, INC. | AUSTIN, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST OFFICE SYSTEMS, INC. | EULESS, TX | Frost Bank |