| $150,000–350,000 | SONATEST INC | SAN ANTONIO, TX | Wells Fargo Bank, National Association |
| $150,000–350,000 | SONTERRA DERMATOLOGY, PLLC | SAN ANTONIO, TX | Frost Bank |
| $2–5 million | SONTERRA MEDICAL MANAGEMENT GROUP, INC. | SAN ANTONIO, TX | Zions Bank, A Division of |
| $150,000–350,000 | SONTERRA STATION, L.P. | SAN ANTONIO, TX | Zions Bank, A Division of |
| $150,000–350,000 | SOU-TIER, INC. | SAN ANTONIO, TX | Texas Partners Bank |
| $150,000–350,000 | SOUND HOLDINGS LLC | SAN ANTONIO, TX | Bank of America, National Association |
| $350,000–1 million | SOUTH ALAMO MEDICAL GROUP PA | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH PARK FAMILY DENTAL CARE LLC | SAN ANTONIO, 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 |
| $150,000–350,000 | SOUTH TEXAS HERBS INC. | SAN ANTONIO, TX | PlainsCapital Bank |
| $150,000–350,000 | SOUTH TEXAS LIQUID TERMINAL, INC | SAN ANTONIO, TX | PlainsCapital Bank |
| $5–10 million | SOUTH TEXAS ONCOLOGY & HEMATOLOGY PLLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH TEXAS ORTHOPEDIC SPECIALTY GROUP, PLLC | SAN ANTONIO, TX | Simmons Bank |
| $150,000–350,000 | SOUTH TEXAS PATHOLOGY ASSOCIATES, LLP | SAN ANTONIO, TX | Frost Bank |
| $2–5 million | SOUTH TEXAS PIZZA, INC | SAN ANTONIO, TX | Signature Bank |
| $2–5 million | SOUTH TEXAS RADIOLOGY GROUP, P.A. | SAN ANTONIO, TX | Zions Bank, A Division of |
| $150,000–350,000 | SOUTH TEXAS SKIN CANCER CENTER, LLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTH TEXAS SPINAL CLINIC, PA | SAN ANTONIO, TX | Texas Partners Bank |
| $150,000–350,000 | SOUTH TEXAS VISION ASSOCIATES PA | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTHEAST SNF LLC | SAN ANTONIO, TX | Renasant Bank |
| $150,000–350,000 | SOUTHEAST SOUTH TEXAS CENTER FOR PEDIATRIC CARE, PA | SAN ANTONIO, TX | Frost Bank |
| $1–2 million | SOUTHERN WEALTH MANAGEMENT LLP | SAN ANTONIO, TX | Texas Community Bank |
| $350,000–1 million | SOUTHSIDE CHILDREN'S DENTAL CENTER PC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SOUTHWEST BAKING CO. LLC | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $350,000–1 million | SOUTHWEST CHILDREN'S CENTER, P.A. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST COMPANIES LTD. | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST IMMUNODIAGNOSTICS, INC. | SAN ANTONIO, TX | Zions Bank, A Division of |
| $150,000–350,000 | SOUTHWEST PAIN CLINIC PA | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | SOUTHWEST SCHOOL OF ART | SAN ANTONIO, TX | Frost Bank |
| $2–5 million | SOUTHWEST TEXAS EQUIPMENT DISTRIBUTORS, INC. | SAN ANTONIO, TX | Frost Bank |
| $5–10 million | SOUTHWESTERN MOTOR TRANSPORT, INC | SAN ANTONIO, TX | First Source Federal Credit Union |
| $350,000–1 million | SPECTRUM LIGHTING INC. SAN ANTONIO | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SPEECH AND LANGUAGE CENTER AT STONE OAK | SAN ANTONIO, TX | First Source Federal Credit Union |
| $350,000–1 million | SPEECH SPECIALISTS OF SAN ANTONIO PC | SAN ANTONIO, TX | Texas Champion Bank |
| $150,000–350,000 | SPEED-E'Z PHYSICIAN EXCHANGE, INC. | SAN ANTONIO, TX | Simmons Bank |
| $2–5 million | SPFM, L.P. | SAN ANTONIO, TX | Bank of America, National Association |
| $150,000–350,000 | SPIGEL PROPERTIES, LLC | SAN ANTONIO, TX | PlainsCapital Bank |
| $350,000–1 million | SPINDLETOP PAIN MANAGEMENT COMPANY INC. | SAN ANTONIO, TX | First Source Federal Credit Union |
| $150,000–350,000 | SPIRE MEDICAL MANAGEMENT INC | SAN ANTONIO, TX | First Source Federal Credit Union |
| $150,000–350,000 | SPIRE RISK MANAGEMENT LLC | SAN ANTONIO, TX | Lone Star National Bank |
| $350,000–1 million | SPORTS MEDICINE ASSOCIATES OF SAN ANTONIO, PA | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | SRO ASSOCIATES, INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | SSG HOTEL, LLC | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | ST LUKE | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | ST LUKE CATHOLIC SCHOOL | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ST MARK THE EVANGELIST CATHOLIC CHURCH | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ST MARY MAGDALEN CATHOLIC SCHOOL | SAN ANTONIO, TX | Jefferson Bank |
| $150,000–350,000 | ST PETER PRINCE OF THE APOSTLES CHURCH & SCHOOL | SAN ANTONIO, TX | International Bank of Commerce |
| $150,000–350,000 | ST. ANDREW'S UNITED METHODIST CHURCH OF SAN ANTONIO, INC | SAN ANTONIO, TX | Broadway National Bank |
| $350,000–1 million | ST. ANTHONY CATHOLIC SCHOOL | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | ST. GEORGE EPISCOPAL DAY SCHOOL, INC. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ST. GERARD CATHOLIC HIGH SCHOOL | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | ST. GREGORY THE GREAT CATHOLIC SCHOOL | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ST. JAMES THE APOSTLE CATHOLIC SCHOOL | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | ST. JUSTE MANAGEMENT CORP. | SAN ANTONIO, TX | Pacific Premier Bank |
| $350,000–1 million | ST. LUKE'S EPISCOPAL SCHOOL OF SAN ANTONIO | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | ST. MARK'S EPISCOPAL CHURCH OF SAN ANTONIO | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | ST. MATTHEW CATHOLIC SCHOOL | SAN ANTONIO, TX | Jefferson Bank |
| $1–2 million | ST. PETER - ST. JOSEPH CHILDREN'S HOME | SAN ANTONIO, TX | Jefferson Bank |
| $350,000–1 million | STABILITY STAFFING AND CONSULTING LLC | SAN ANTONIO, TX | Bank of America, National Association |
| $350,000–1 million | STAFF POWER GLOBAL, LLC | SAN ANTONIO, TX | JPMorgan Chase Bank, National Association |
| $5–10 million | STAGG RESTAURANTS, LLC | SAN ANTONIO, TX | Citizens Bank, National Association |
| $150,000–350,000 | STALWART CONTRACTING, LLC | SAN ANTONIO, TX | Generations Community Federal Credit Union |
| $150,000–350,000 | STAR MANUFACTURING LTD | SAN ANTONIO, TX | Broadway National Bank |
| $1–2 million | STAR SHUTTLE, INC. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | STAR TEAM INTENSIVE CARE AND HOSPITALIST | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | STARCAP MARKETING LLC | SAN ANTONIO, TX | Jefferson Bank |
| $150,000–350,000 | STARFIRE SPRINKLER SERVICES, INC. | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | STAT EMERGENCY CENTER OF DEL RIO, LLC | SAN ANTONIO, TX | Falcon International Bank |
| $150,000–350,000 | STATEWIDE DISTRIBUTING, INC. | SAN ANTONIO, TX | Bank of America, National Association |
| $150,000–350,000 | STEAM CLEANING SOLUTIONS LLC | SAN ANTONIO, TX | Bank of America, National Association |
| $350,000–1 million | STEELHEAD, INC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | STELLAR GTC, LLC | SAN ANTONIO, TX | Jefferson Bank |
| $150,000–350,000 | STEMBIOSYS, INC. | SAN ANTONIO, TX | Broadway National Bank |
| $350,000–1 million | STEPHEN MILLER MD PA | SAN ANTONIO, TX | Texas Partners Bank |
| $150,000–350,000 | STEVE M EDWARDS DDS PA | SAN ANTONIO, TX | Vantage Bank Texas |
| $350,000–1 million | STIRISTA, LLC | SAN ANTONIO, TX | American Bank, National Association |
| $150,000–350,000 | STMA BUSINESS LLC | SAN ANTONIO, TX | Wallis Bank |
| $350,000–1 million | STONE OAK FAMILY DOCTORS, P.A. | SAN ANTONIO, TX | Broadway National Bank |
| $150,000–350,000 | STONE OAK PEDIATRIC DENTISTRY | SAN ANTONIO, TX | First Source Federal Credit Union |
| $150,000–350,000 | STONE OAK PEDIATRICS, PA | SAN ANTONIO, TX | Zions Bank, A Division of |
| $150,000–350,000 | STONE OAK SURGERY CENTER LLC. | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | STONE OAK VILLAS II LTD | SAN ANTONIO, TX | Truist Bank |
| $350,000–1 million | STONE WERKS @ RIM, LLC | SAN ANTONIO, TX | Lone Star Capital Bank, National Association |
| $350,000–1 million | STONE WERKS GRILLE @ CULEBRA, LLC | SAN ANTONIO, TX | Lone Star Capital Bank, National Association |
| $350,000–1 million | STONE WERKS GRILLE @ HEIGHTS, LLC | SAN ANTONIO, TX | Lone Star Capital Bank, National Association |
| $350,000–1 million | STONE WERKS GRILLE @ VINEYARD, LLC | SAN ANTONIO, TX | Lone Star Capital Bank, National Association |
| $350,000–1 million | STONEBRIDGE ALLIANCE, LLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | STONEBROOK MANOR SNF LLC | SAN ANTONIO, TX | Renasant Bank |
| $350,000–1 million | STOUFFER & ASSOCIATES, LLP | SAN ANTONIO, TX | Broadway National Bank |
| $1–2 million | STOUT EXCAVATING GROUP, LLC | SAN ANTONIO, TX | Security Financial Bank |
| $150,000–350,000 | STOUT'S PIZZA CO., LLC | SAN ANTONIO, TX | Frost Bank |
| $150,000–350,000 | STRAIGHT LINE MANAGEMENT LLC | SAN ANTONIO, TX | Frost Bank |
| $350,000–1 million | STRAITLINE PUMPS LLC | SAN ANTONIO, TX | Bank OZK |
| $150,000–350,000 | STRAITLINE RENTALS LLC | SAN ANTONIO, TX | Bank OZK |
| $150,000–350,000 | STRAITLINE WELL SERVICES LLC | SAN ANTONIO, TX | Bank OZK |
| $350,000–1 million | STRATTON REHABILITATION CLINIC, INC. | SAN ANTONIO, TX | Vantage Bank Texas |
| $350,000–1 million | STREAMLINE INNOVATIONS, INC. | SAN ANTONIO, TX | Texas Capital Bank |
| $350,000–1 million | STRUCTURAL ENGINEERING ASSOCIATES INC | SAN ANTONIO, TX | Frost Bank |