| $350,000–1 million | MEDIACROSS, INC. | SAINT LOUIS, MO | Simmons Bank |
| $150,000–350,000 | MEDIAFIRE, LLC | MAGNOLIA, TX | Simmons Bank |
| $1–2 million | MEDICAL ASSETS HOLDING COMPANY, LLC | LITTLE ROCK, AR | Simmons Bank |
| $1–2 million | MEDICAL PRACTICE SOLUTIONS LLC | Richardson, TX | Simmons Bank |
| $1–2 million | MEDICAL PRACTICE SOLUTIONS, LLC | RICHARDSON, TX | Simmons Bank |
| $150,000–350,000 | MEDICAL PROVIDER RESOURCES, INC. | WICHITA, KS | Simmons Bank |
| $150,000–350,000 | MEDICINE WHEEL INC | KENEFIC, OK | Simmons Bank |
| $350,000–1 million | MEDINA HOLDINGS LLC | MOUNTAIN VIEW, AR | Simmons Bank |
| $350,000–1 million | MEDISAV HOMECARE PHARMACIES, INC | CHARLESTON, AR | Simmons Bank |
| $150,000–350,000 | MEDLINC, INC. | LITTLE ROCK, AR | Simmons Bank |
| $1–2 million | MEDOVA HEALTHCARE FINANCIAL GROUP, LLC | WICHITA, KS | Simmons Bank |
| $150,000–350,000 | MEDPATH LABS, INC. | DALLAS, TX | Simmons Bank |
| $150,000–350,000 | MEDSAFETY SOLUTIONS LLC | CENTENNIAL, CO | Simmons Bank |
| $150,000–350,000 | MEEH CLIMATE SERVICE | FENTON, MO | Simmons Bank |
| $150,000–350,000 | MEEH CLIMATE SERVICE L.L.C. | Fenton, MO | Simmons Bank |
| $150,000–350,000 | MEEK & TASCH, INC. D.D.S., P.A. | AUSTIN, TX | Simmons Bank |
| $150,000–350,000 | MEEK AND TASCH INC DDS PA | Austin, TX | Simmons Bank |
| $150,000–350,000 | MELVIN'S DISCOUNT PHARMACY, INC. | EL DORADO, AR | Simmons Bank |
| $150,000–350,000 | MEMPHIS FENCE COMPANY, LLC | MEMPHIS, TN | Simmons Bank |
| $350,000–1 million | MEMPHIS MECHANICAL SERVICES, INC. | Memphis, TN | Simmons Bank |
| $350,000–1 million | MEMPHIS RECORD PRESSING LLC | MEMPHIS, TN | Simmons Bank |
| $1–2 million | MENTORING MINDS, L.P. | TYLER, TX | Simmons Bank |
| $350,000–1 million | MERCHANTS MOVING AND STORAGE INC | YOAKUM, TX | Simmons Bank |
| $350,000–1 million | MERIDIAN CLEAR LAKE OE, LP | DALLAS, TX | Simmons Bank |
| $150,000–350,000 | MERIDIAN KNOXVILLE OE, L.P. | DALLAS, TX | Simmons Bank |
| $350,000–1 million | MERIDIAN LAFAYETTE OE, L.P. | DALLAS, TX | Simmons Bank |
| $150,000–350,000 | MERIDIAN SHAVANO PARK AL/ALZ OE, L.P. | DALLAS, TX | Simmons Bank |
| $1–2 million | MERITUM ENERGY GP LLC | SAN ANTONIO, TX | Simmons Bank |
| $1–2 million | MERITUM ENERGY GP LLC | San Antonio, TX | Simmons Bank |
| $150,000–350,000 | MESA MARBLE AND STONE COMPANY INC | Bryan, TX | Simmons Bank |
| $150,000–350,000 | MESA MARBLE AND STONE COMPANY, INC. | BRYAN, TX | Simmons Bank |
| $150,000–350,000 | METAL GOODS MANUFACTURING COMPANY INC | BARTLESVILLE, OK | Simmons Bank |
| $150,000–350,000 | METAL ROOFING SUPPLY AND MANUFACTURING, INC. | SEARCY, AR | Simmons Bank |
| $350,000–1 million | METAL STUDS INC DBA DRYWALL CREWS INC | Rogers, AR | Simmons Bank |
| $350,000–1 million | METAL STUDS, INC. | ROGERS, AR | Simmons Bank |
| $150,000–350,000 | METRONOME PARTNERS LLC | Chicago, IL | Simmons Bank |
| $150,000–350,000 | METRONOME PARTNERS, LLC | CHICAGO, IL | Simmons Bank |
| $150,000–350,000 | METROPLEX CSC LLC | Fort Worth, TX | Simmons Bank |
| $150,000–350,000 | METROPOLITAN BAPTIST CHURCH OF NASHVILLE, INC. | GOODLETTSVILLE, TN | Simmons Bank |
| $350,000–1 million | METTS POWERLINE CONSTRUCTION, INC. | DURANT, OK | Simmons Bank |
| $350,000–1 million | MEXICO JOE'S INC. | Stillwater, OK | Simmons Bank |
| $150,000–350,000 | MEXICO JOE'S, INC. | STILLWATER, OK | Simmons Bank |
| $150,000–350,000 | MGD ENTERPRISES INC | SPRINGFIELD, MO | Simmons Bank |
| $150,000–350,000 | MH CYPRESS LLC | Houston, TX | Simmons Bank |
| $150,000–350,000 | MH CYPRESS, LLC | CYPRESS, TX | Simmons Bank |
| $350,000–1 million | MIA SEATING CORPORATION | Union City, TN | Simmons Bank |
| $350,000–1 million | MIA SEATING INC | Union City, TN | Simmons Bank |
| $150,000–350,000 | MICHAEL A. HOCHMAN MD. PA. | LAREDO, TX | Simmons Bank |
| $150,000–350,000 | MICHAEL KEITH MCGUIRE | Tilden, TX | Simmons Bank |
| $350,000–1 million | MID COAST ENGINE & TRANSMISSION INC | Rock Port, TX | Simmons Bank |
| $350,000–1 million | MID COAST ENGINE & TRANSMISSION INC | ARANSAS PASS, TX | Simmons Bank |
| $1–2 million | MID SOUTH INDUSTRIAL INC. | Bells, TN | Simmons Bank |
| $350,000–1 million | MID SOUTH INDUSTRIAL, INC. | BELLS, TN | Simmons Bank |
| $150,000–350,000 | MID SOUTH INSULATION INC. | WHITE HOUSE, TN | Simmons Bank |
| $350,000–1 million | MID SOUTH SENIOR CARE, LLC | MEMPHIS, TN | Simmons Bank |
| $150,000–350,000 | MID-CITIES EXCAVATION, INC. | CANTON, TX | Simmons Bank |
| $150,000–350,000 | MID-PLAINS CONSTRUCTION INC | MEAD, OK | Simmons Bank |
| $150,000–350,000 | MID-PLAINS CONSTRUCTION INC. | Mead, OK | Simmons Bank |
| $350,000–1 million | MID-SOUTH ADJUSTMENT CO., INC | PINE BLUFF, AR | Simmons Bank |
| $5–10 million | MIDAS HOSPITALITY LLC | SAINT LOUIS, MO | Simmons Bank |
| $350,000–1 million | MIDSOUTH ORTHOPEDICS INCORPORATED | Little Rock, AR | Simmons Bank |
| $350,000–1 million | MIDSOUTH ORTHOPEDICS INCORPORATED | LITTLE ROCK, AR | Simmons Bank |
| $150,000–350,000 | MIDTOWN TITLE, LLC | NASHVILLE, TN | Simmons Bank |
| $350,000–1 million | MIDWEST GERIATRIC MANAGEMENT, LLC | Saint Louis, MO | Simmons Bank |
| $1–2 million | MIKE S. MCFARLAND M.D. P.A. | Pine Bluff, AR | Simmons Bank |
| $1–2 million | MIKE S. MCFARLAND, M.D., P.A. | PINE BLUFF, AR | Simmons Bank |
| $150,000–350,000 | MILE HIGH TANK SERVICES, LLC | Commerce City, CO | Simmons Bank |
| $350,000–1 million | MILENNIA PRODUCTIONS LLC | WICHITA, KS | Simmons Bank |
| $350,000–1 million | MILL TEL INC | Park City, KS | Simmons Bank |
| $150,000–350,000 | MILL-TEL, INC. | WICHITA, KS | Simmons Bank |
| $350,000–1 million | MILLENNIUM HEALTH AND WELLNESS | LAS CRUCES, NM | Simmons Bank |
| $350,000–1 million | MILLENNIUM HEALTH AND WELLNESS INC | Las Cruces, NM | Simmons Bank |
| $150,000–350,000 | MILLENNIUM RECYCLING, LLP | FORT WORTH, TX | Simmons Bank |
| $150,000–350,000 | MILLER BALES & COMPANY PC | COLUMBIA, MO | Simmons Bank |
| $150,000–350,000 | MILLSAP VETERINARY CLINIC, INC | MILLSAP, TX | Simmons Bank |
| $150,000–350,000 | MINESH Y PATEL DDS | Jackson, TN | Simmons Bank |
| $150,000–350,000 | MINICK MATERIALS COMPANY | OKLAHOMA CITY, OK | Simmons Bank |
| $150,000–350,000 | MINIT TACO 3 INC | SAN ANTONIO, TX | Simmons Bank |
| $150,000–350,000 | MITCHELL TRANSPORT, INC | DRESDEN, TN | Simmons Bank |
| $150,000–350,000 | MJ PRODUCTS INC | Fenton, MO | Simmons Bank |
| $150,000–350,000 | MJ PRODUCTS INC | Fenton, MO | Simmons Bank |
| $150,000–350,000 | MJK POWERSPORTS LLC | KATY, TX | Simmons Bank |
| $350,000–1 million | MKBD 2, LLC | DALLAS, TX | Simmons Bank |
| $150,000–350,000 | MLB LANDSCAPE & STONEWORKS LLC | FORT WORTH, TX | Simmons Bank |
| $150,000–350,000 | MM&P CONCEPTS LLC | Saint Louis, MO | Simmons Bank |
| $150,000–350,000 | MM&P CONCEPTS LLC | Saint Louis, MO | Simmons Bank |
| $350,000–1 million | MMS EQUIPMENT OF DALLAS CENTRAL INC | DALLAS, TX | Simmons Bank |
| $350,000–1 million | MOAK DEVELOPMENTS LLC | MAGNOLIA, TX | Simmons Bank |
| $350,000–1 million | MOAK DEVELOPMENTS LLC | Magnolia, TX | Simmons Bank |
| $150,000–350,000 | MOCKINGBIRD BAR & TACOS LLC | Little Rock, AR | Simmons Bank |
| $2–5 million | MODERN METHOD GUNITE, INC. | HOUSTON, TX | Simmons Bank |
| $150,000–350,000 | MOMENTUM TITLE, LLC | SPRING, TX | Simmons Bank |
| $150,000–350,000 | MONFEE MEDICAL CLINIC, P.A. | RUSSELLVILLE, AR | Simmons Bank |
| $150,000–350,000 | MONROE MOTORS INC | Parsons, TN | Simmons Bank |
| $150,000–350,000 | MONROE MOTORS, INC. | PARSONS, TN | Simmons Bank |
| $150,000–350,000 | MONTGOMERY CAPITAL ADVISERS, LLC | PLANO, TX | Simmons Bank |
| $350,000–1 million | MONTGOMERY COUNTY YOUTH SERVICES INC | Conroe, TX | Simmons Bank |
| $150,000–350,000 | MONTGOMERY COUNTY YOUTH SERVICES, INC | CONROE, TX | Simmons Bank |
| $150,000–350,000 | MOORE & ROBINSON, INC. | Little Rock, AR | Simmons Bank |
| $150,000–350,000 | MOORE DENTAL OFFICE PLLC | MARTIN, TN | Simmons Bank |