| $150,000–350,000 | DCS MANAGEMENT, LLC | SAINT CHARLES, MI | Mercantile Bank |
| $150,000–350,000 | DE HAAN BUILDERS INC. | Hudsonville, MI | Mercantile Bank |
| $150,000–350,000 | DE HAAN BUILDERS, INC. | HUDSONVILLE, MI | Mercantile Bank |
| $150,000–350,000 | DECKER & SONS, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | DEDINAS & FRANZAK ENTERPRISES INC | GRAND RAPIDS, MI | Mercantile Bank |
| $1–2 million | DENN-CO CONSTRUCTION INC. | Detroit, MI | Mercantile Bank |
| $1–2 million | DENN-CO CONSTRUCTION, INC. | DETROIT, MI | Mercantile Bank |
| $350,000–1 million | DENTURES ONE INC. | Grand Rapids, MI | Mercantile Bank |
| $350,000–1 million | DENTURES ONE, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | DEPENDABLE TREE AND MAINTENANCE SERVICE LLC | ADA, MI | Mercantile Bank |
| $350,000–1 million | DESHANO COMPANIES, INC | GLADWIN, MI | Mercantile Bank |
| $1–2 million | DESIGN 1 INC | GRAND RAPIDS, MI | Mercantile Bank |
| $1–2 million | DESIGN 1 INC. | Grand Rapids, MI | Mercantile Bank |
| $150,000–350,000 | DESIGN CONVERTING INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $1–2 million | DHE PLUMBING AND MECHANICAL L.L.C. | Grandville, MI | Mercantile Bank |
| $1–2 million | DHE PLUMBING AND MECHANICAL, LLC | GRANDVILLE, MI | Mercantile Bank |
| $150,000–350,000 | DIAGNOSTIC SYSTEMS ASSOCIATES INC. | Kalamazoo, MI | Mercantile Bank |
| $150,000–350,000 | DIAGNOSTIC SYSTEMS ASSOCIATES, INC. | KALAMAZOO, MI | Mercantile Bank |
| $150,000–350,000 | DIDIO DESIGN LLC | Detroit, MI | Mercantile Bank |
| $150,000–350,000 | DIDIO DESIGN, LLC | DETROIT, MI | Mercantile Bank |
| $350,000–1 million | DIENAMIC TOOLING SYSTEMS INC | LENOIR CITY, TN | Mercantile Bank |
| $350,000–1 million | DIENAMIC TOOLING SYSTEMS INC. | Lenoir City, TN | Mercantile Bank |
| $350,000–1 million | DIGITAL HIGHWAY, INC. | BATTLE CREEK, MI | Mercantile Bank |
| $150,000–350,000 | DISTINCTIVE GROUP INC. | Zeeland, MI | Mercantile Bank |
| $150,000–350,000 | DISTINCTIVE GROUP, INC. | ZEELAND, MI | Mercantile Bank |
| $350,000–1 million | DIVERSCO CONSTRUCTION COMPANY, INC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | DIVISION 7 BUILDING CONTRACTORS INC. | KALAMAZOO, MI | Mercantile Bank |
| $150,000–350,000 | DOMER INDUSTRIES LLC | Kalamazoo, MI | Mercantile Bank |
| $150,000–350,000 | DOMER INDUSTRIES, LLC | KALAMAZOO, MI | Mercantile Bank |
| $350,000–1 million | DON'S AUTO CLINIC INC | CADILLAC, MI | Mercantile Bank |
| $1–2 million | DOOD ENTERPRISES INC. | Comstock Park, MI | Mercantile Bank |
| $1–2 million | DOOD ENTERPRISES, INC | COMSTOCK PARK, MI | Mercantile Bank |
| $150,000–350,000 | DOOR SECURITY SOLUTIONS OF MICHIGAN INC | KALAMAZOO, MI | Mercantile Bank |
| $350,000–1 million | DUE NORTH INC. | Grand Rapids, MI | Mercantile Bank |
| $150,000–350,000 | DUE NORTH INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | DUMBARTON TOOL INC. | Cadillac, MI | Mercantile Bank |
| $150,000–350,000 | DUMBARTON TOOL, INC. | CADILLAC, MI | Mercantile Bank |
| $150,000–350,000 | DUNKIN' DONUTS/SUNOCO - OKEMOS | OKEMOS, MI | Mercantile Bank |
| $350,000–1 million | DUNSHEE BODY & FRAME INC | KALAMAZOO, MI | Mercantile Bank |
| $150,000–350,000 | DYNAMIC DRILLING LLC | STANDISH, MI | Mercantile Bank |
| $150,000–350,000 | DYNAMIC DRILLING LLC | Standish, MI | Mercantile Bank |
| $350,000–1 million | DYNAMIC PHYSICAL THERAPY P.C. | Cadillac, MI | Mercantile Bank |
| $350,000–1 million | DYNAMIC PHYSICAL THERAPY, INC. | CADILLAC, MI | Mercantile Bank |
| $350,000–1 million | DYNAMIC WOOD PRODUCTS INC. | Saranac, MI | Mercantile Bank |
| $350,000–1 million | DYNAMIC WOOD PRODUCTS, INCORPORATED | SARANAC, MI | Mercantile Bank |
| $350,000–1 million | DZ CONSTRUCTION COMPANY INC | Homer, MI | Mercantile Bank |
| $350,000–1 million | DZ CONSTRUCTION COMPANY, INC. | HOMER, MI | Mercantile Bank |
| $150,000–350,000 | E. M. SERGEANT FUEL OIL SERVICE INC. | Kalamazoo, MI | Mercantile Bank |
| $150,000–350,000 | E.J. SACCO INC. | MOUNT PLEASANT, MI | Mercantile Bank |
| $150,000–350,000 | E.M. SERGEANT FUEL OIL SERVICES INC | KALAMAZOO, MI | Mercantile Bank |
| $150,000–350,000 | EAGLE INDUSTRIAL GROUP | COMSTOCK PARK, MI | Mercantile Bank |
| $350,000–1 million | EARLEY & ASSOCIATES, INC. | KALAMAZOO, MI | Mercantile Bank |
| $150,000–350,000 | EBELS HARDWARE, INC. | FALMOUTH, MI | Mercantile Bank |
| $150,000–350,000 | EDUCATIONAL TOURS INC. | Eaton Rapids, MI | Mercantile Bank |
| $150,000–350,000 | EDUCATIONAL TOURS, INC. | HOLT, MI | Mercantile Bank |
| $150,000–350,000 | EGAN FOOD TECHNOLOGIES, LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | EISELER OIL COMPANY INC. | Lansing, MI | Mercantile Bank |
| $350,000–1 million | ELE'S PLACE INC. | Lansing, MI | Mercantile Bank |
| $350,000–1 million | ELE'S PLACE, INC. | LANSING, MI | Mercantile Bank |
| $150,000–350,000 | ENAMELITE INDUSTRIES LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | ENGINEERED TOOLING SYSTEMS, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | ENVIROLITE LLC | Troy, MI | Mercantile Bank |
| $350,000–1 million | ENVIROLITE, LLC | TROY, MI | Mercantile Bank |
| $150,000–350,000 | ENVIRONMENTAL DOOR INSULATION | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | ERIC J ENGLISH DDS P.C. | BELMONT, MI | Mercantile Bank |
| $350,000–1 million | EVOLVE TELE-SERVICES INC. | EAST LANSING, MI | Mercantile Bank |
| $150,000–350,000 | EXALTA HEALTH | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | EXALTA HEALTH | Grand Rapids, MI | Mercantile Bank |
| $350,000–1 million | EXCEL SALON PRODUCTS INC. | Grand Rapids, MI | Mercantile Bank |
| $350,000–1 million | EXCEL SALON PRODUCTS, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | EXECUFORCE INC | WILLIAMSTON, MI | Mercantile Bank |
| $150,000–350,000 | F & F SERVICE CENTERS INC. | Grand Rapids, MI | Mercantile Bank |
| $150,000–350,000 | F & F SERVICE CENTERS, INC. | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | F&M CEMENT COMPANY INC | WESTLAND, MI | Mercantile Bank |
| $150,000–350,000 | F&S ELECTRICAL CONTRACTORS INC. | Wayland, MI | Mercantile Bank |
| $150,000–350,000 | F&S ELECTRICAL CONTRACTORS, INC. | WAYLAND, MI | Mercantile Bank |
| $2–5 million | F&V COMPANIES INC | GRAND RAPIDS, MI | Mercantile Bank |
| $150,000–350,000 | FAMILY HEALTH PSYCHIATRIC AND COUNSELING CENTER, P.C. | ALMA, MI | Mercantile Bank |
| $350,000–1 million | FIRST CONTRACTING INC | OVID, MI | Mercantile Bank |
| $350,000–1 million | FIRST CONTRACTING INC. | Ovid, MI | Mercantile Bank |
| $5–10 million | FISHBECK, THOMPSON, CARR & HUBER, INC | GRAND RAPIDS, MI | Mercantile Bank |
| $1–2 million | FLEX TECH INC | INCLINE VILLAGE, NV | Mercantile Bank |
| $1–2 million | FOREMOST GRAPHICS LLC | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | FORESIGHT GROUP INC. | Lansing, MI | Mercantile Bank |
| $350,000–1 million | FORESIGHT GROUP INC. | LANSING, MI | Mercantile Bank |
| $350,000–1 million | FOREWAY TRANSPORTATION INC | COOPERSVILLE, MI | Mercantile Bank |
| $2–5 million | FRANKLIN HOLWERDA CO. | WYOMING, MI | Mercantile Bank |
| $150,000–350,000 | FRANKLIN MANAGEMENT, LLC | OAK BROOK, IL | Mercantile Bank |
| $150,000–350,000 | FREEDOM MARKET INC | ATLANTA, MI | Mercantile Bank |
| $150,000–350,000 | FULL THROTTLE ACQUISITION LLC | COLDWATER, MI | Mercantile Bank |
| $150,000–350,000 | FULL THROTTLE ACQUISITION LLC | Coldwater, MI | Mercantile Bank |
| $150,000–350,000 | G.A. HUNT EXCAVATING LLC | SAINT JOHNS, MI | Mercantile Bank |
| $350,000–1 million | GARDNER MANAGEMENT COMPANY | KALAMAZOO, MI | Mercantile Bank |
| $150,000–350,000 | GELOCK TRANSFER LINE INC. | Grand Rapids, MI | Mercantile Bank |
| $150,000–350,000 | GELOCK TRANSFER LINE, INC | GRAND RAPIDS, MI | Mercantile Bank |
| $350,000–1 million | GENERAL AGENCY COMPANY, INC. | MOUNT PLEASANT, MI | Mercantile Bank |
| $350,000–1 million | GENTE INC | ZEELAND, MI | Mercantile Bank |
| $350,000–1 million | GENTE INC. | Portage, MI | Mercantile Bank |
| $150,000–350,000 | GERREF INDUSTRIES INC. | Belding, MI | Mercantile Bank |
| $150,000–350,000 | GERREF INDUSTRIES, INC. | BELDING, MI | Mercantile Bank |