| $150,000–350,000 | MASON-DALLAS, INC. | EULESS, TX | Prosperity Bank |
| $150,000–350,000 | MASYER CORP | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MASYER CORP | Spring, TX | Prosperity Bank |
| $2–5 million | MATAGORDA COUNTY HOSPITAL DISTRICT | Bay City, TX | Prosperity Bank |
| $350,000–1 million | MATAGORDA EPISCOPAL HEALTH OUTREACH PROGRAM CORPORATION | Bay City, TX | Prosperity Bank |
| $350,000–1 million | MATAGORDA NURSING AND REHABILITATION CENTER LLC | GANADO, TX | Prosperity Bank |
| $150,000–350,000 | MATERIAL INSPECTION TECHNOLOGY INC | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MATERIAL INSPECTION TECHNOLOGY, INC | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MATHEWS RESORTS INC | Aransas Pass, TX | Prosperity Bank |
| $150,000–350,000 | MATHEWS RESORTS, INC | ARANSAS PASS, TX | Prosperity Bank |
| $150,000–350,000 | MATT BISCHOF INSURANCE GROUP, INC. | THE COLONY, TX | Prosperity Bank |
| $150,000–350,000 | MATTHEW ROAD BAPTIST CHURCH | Grand Prarie, TX | Prosperity Bank |
| $350,000–1 million | MAUDIE'S AT SHADY HOLLOW, LP | AUSTIN, TX | Prosperity Bank |
| $150,000–350,000 | MAUDIE'S MILAGRO, L.P. | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAUDIE'S HILL COUNTRY, LLC | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAUDIE'S MILAGRO L.P. | Austin, TX | Prosperity Bank |
| $150,000–350,000 | MAUDIE'S ORIGINAL, LP | Austin, TX | Prosperity Bank |
| $150,000–350,000 | MAUDIE'S TRIANGEL, LLC | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAUDIES AT SHADY HOLLOW LP | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAUDIES HILL COUNTRY LLC | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAUDIES ORIGINAL LP | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAUDIES TOO LP | Austin, TX | Prosperity Bank |
| $150,000–350,000 | MAUDIES TOO, LP | Austin, TX | Prosperity Bank |
| $350,000–1 million | MAVERICK CIVIL & SURVEY, LLC | MIDLAND, TX | Prosperity Bank |
| $350,000–1 million | MAVRC PIZZA, LLC. | ALTUS, OK | Prosperity Bank |
| $350,000–1 million | MAXIMUM INDUSTRIES INC | Irving, TX | Prosperity Bank |
| $350,000–1 million | MAXIMUM INDUSTRIES INC | IRVING, TX | Prosperity Bank |
| $150,000–350,000 | MAXTAB, INC. | Austin, TX | Prosperity Bank |
| $2–5 million | MAXUS HEALTHCARE PARTNERS, LLC | Fort Worth, TX | Prosperity Bank |
| $350,000–1 million | MBCM MANAGEMENT, INC. | Navasota, TX | Prosperity Bank |
| $150,000–350,000 | MBCM MANAGEMENT, INC. | NAVASOTA, TX | Prosperity Bank |
| $350,000–1 million | MC NORTON DEWATERING INC | Cleveland, TX | Prosperity Bank |
| $150,000–350,000 | MC WELDING & FABRICATION INC | Corpus Christi, TX | Prosperity Bank |
| $150,000–350,000 | MC WELDING & FABRICATION INC | Corpus Christi, TX | Prosperity Bank |
| $150,000–350,000 | MC WORD UP INC | AUSTIN, TX | Prosperity Bank |
| $2–5 million | MCADA DRILLING FLUIDS INC | Bay City, TX | Prosperity Bank |
| $2–5 million | MCADA DRILLING FLUIDS, INC. | BAY CITY, TX | Prosperity Bank |
| $150,000–350,000 | MCCART MEDICAL ASSOCIATES PA | FORT WORTH, TX | Prosperity Bank |
| $150,000–350,000 | MCCART MEDICAL ASSOCIATES PA | Fort Worth, TX | Prosperity Bank |
| $150,000–350,000 | MCCURDY SERVICES INC | Bryan, TX | Prosperity Bank |
| $150,000–350,000 | MCCURDY SERVICES INC | BRYAN, TX | Prosperity Bank |
| $350,000–1 million | MCGUIRE INDUSTRIES INC | Odessa, TX | Prosperity Bank |
| $350,000–1 million | MCGUIRE INDUSTRIES, INC. | Odessa, TX | Prosperity Bank |
| $2–5 million | MCGUIRE MOORMAN HOSPITALITY LLC | Austin, TX | Prosperity Bank |
| $1–2 million | MCGUIRE MOORMAN HOSPITALITY LLC | AUSTIN, TX | Prosperity Bank |
| $350,000–1 million | MCMAHAN SERVICES LTD | Cuero, TX | Prosperity Bank |
| $1–2 million | MCMAHAN SERVICES, LTD | CUERO, TX | Prosperity Bank |
| $2–5 million | MCNELLIE'S GROUP LLC | TULSA, OK | Prosperity Bank |
| $350,000–1 million | MCNORTON DEWATERING INC | Cleveland, TX | Prosperity Bank |
| $150,000–350,000 | MCVAUGH CUSTOM HOMES INC | Houston, TX | Prosperity Bank |
| $350,000–1 million | MEADOWLARK HOLDINGS LLP | Houston, TX | Prosperity Bank |
| $350,000–1 million | MEADOWLARK HOLDINGS LLP | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MEALS ON WHEELS COLLIN COUNTY | MCKINNEY, TX | Prosperity Bank |
| $150,000–350,000 | MECHANICAL AIR SYSTEMS INC. | Broken Arrow, OK | Prosperity Bank |
| $150,000–350,000 | MECHANICAL AIR SYSTEMS, INC. | Broken Arrow, OK | Prosperity Bank |
| $150,000–350,000 | MECHANIX INC | BAY CITY, TX | Prosperity Bank |
| $150,000–350,000 | MECHANIX INC | Bay City, TX | Prosperity Bank |
| $150,000–350,000 | MEDCALF FABRICATION, INC. | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | MEDCONFIRM II LTD | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | MEDDERS OIL COMPANY INC. | WICHITA FALLS, TX | Prosperity Bank |
| $150,000–350,000 | MEDFAB INTERESTS LLC | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | MEDIA DEFINED INC | Dallas, TX | Prosperity Bank |
| $150,000–350,000 | MEDIA DEFINED INC. | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | MEDRECOVERY SOLUTIONS LLC | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MEDRECOVERY SOLUTIONS LLC | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MEDSTAFFING INC | Plano, TX | Prosperity Bank |
| $150,000–350,000 | MEDSTAFFING, INC. | PLANO, TX | Prosperity Bank |
| $1–2 million | MEDTRIALS, INC. | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | MEDWED ENTERPRISES, INC. | RICHARDSON, TX | Prosperity Bank |
| $150,000–350,000 | MEEK'S ELECTRICAL SERVICES INC | Tulsa, OK | Prosperity Bank |
| $150,000–350,000 | MEEK'S ELECTRICAL SERVICES, INC. | Tulsa, OK | Prosperity Bank |
| $150,000–350,000 | MEERS ENTERPRISES INC | LUBBOCK, TX | Prosperity Bank |
| $150,000–350,000 | MEGATEL CAPITAL INVESTMENTS, LLC | DALLAS, TX | Prosperity Bank |
| $2–5 million | MEGATEL HOMES, INC. | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | MELBYCO, INC | PLANO, TX | Prosperity Bank |
| $350,000–1 million | MEMORIAL CREME DE LA CREME, LLC | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MENAGERIE ENTERPRISES INC | Addison, TX | Prosperity Bank |
| $150,000–350,000 | MENAGERIE ENTERPRISES INC. | ADDISON, TX | Prosperity Bank |
| $150,000–350,000 | MENTALIX, INC. | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | MERIDAN CONSTRUCTORS | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | MERIDIAN CONSTRUCTORS LLC | Houston, TX | Prosperity Bank |
| $1–2 million | MERIT ELECTRIC COMPANY | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MESA PRECAST & SUPPLY, LLC | TEMPE, AZ | Prosperity Bank |
| $150,000–350,000 | MESQUITE KITCHENS LLC | Mathis, TX | Prosperity Bank |
| $150,000–350,000 | MESSIAH LUTHERAN CHURCH OF PLANO TEXAS | PLANO, TX | Prosperity Bank |
| $150,000–350,000 | METAL DETAIL, INC. | Dallas, TX | Prosperity Bank |
| $150,000–350,000 | METER CHECK MEASUREMENT SERVICES LLC | Broken Arrow, OK | Prosperity Bank |
| $150,000–350,000 | METER CHECK MEASUREMENT SERVICES, L.L.C. | BROKEN ARROW, OK | Prosperity Bank |
| $350,000–1 million | METRO COMMUNICATION SYSTEMS INC | Grapevine, TX | Prosperity Bank |
| $350,000–1 million | METRO COMMUNICATION SYSTEMS, INC. | GRAPEVINE, TX | Prosperity Bank |
| $150,000–350,000 | METRO HEATING & COOLING | DALLAS, TX | Prosperity Bank |
| $150,000–350,000 | METRO MOTOR CENTER INC | HOUSTON, TX | Prosperity Bank |
| $150,000–350,000 | METRO-REPRO INC | Dallas, TX | Prosperity Bank |
| $350,000–1 million | METROPLEX CONCRETE CONSTRUCTION INC | Fort Worth, TX | Prosperity Bank |
| $350,000–1 million | METROPLEX CONCRETE CONSTRUCTION, INC. | ARGYLE, TX | Prosperity Bank |
| $150,000–350,000 | METROPOLITAN REPROGRAPHICS, INC. | DALLAS, TX | Prosperity Bank |
| $350,000–1 million | METROPORT CITIES FELLOWSHIP, INC | FORT WORTH, TX | Prosperity Bank |
| $350,000–1 million | MEYER LYTTON ALLEN WHITAKER INC | Austin, TX | Prosperity Bank |
| $150,000–350,000 | MEYERLAND ANIMAL CLINIC | Houston, TX | Prosperity Bank |
| $150,000–350,000 | MEYERLAND ANIMAL MANAGEMENT SERVICES | Houston, TX | Prosperity Bank |