| $350,000–1 million | INDIANA/KENTUCKY/OHIO REG COUNCIL OF CARPENTERS JT APPRENTIC | Warsaw, IN | Horizon Bank |
| $150,000–350,000 | INDIANAPOLIS SCALE | Camby, IN | Horizon Bank |
| $150,000–350,000 | INDIANAPOLIS SCALE COMPANY INC. | CAMBY, IN | Horizon Bank |
| $350,000–1 million | INDYVET EMERGENCY AND SPECIALTY HOSPITAL, INC. | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | INNOVATIVE ENERGY INC | Lowell, IN | Horizon Bank |
| $150,000–350,000 | INNOVATIVE ENERGY, INC. | LOWELL, IN | Horizon Bank |
| $150,000–350,000 | INSULATION SPECIALTIES OF AMERICA INC | Wanatah, IN | Horizon Bank |
| $350,000–1 million | INSULATION SPECIALTIES OF AMERICA, INC. | WANATAH, IN | Horizon Bank |
| $350,000–1 million | INTEGRATED ARCHITE | Grand Rapids, MI | Horizon Bank |
| $350,000–1 million | INTEGRATED ARCHITECTURE, L.L.C. | GRAND RAPIDS, MI | Horizon Bank |
| $1–2 million | INTEGRITY INTERIO | Lansing, MI | Horizon Bank |
| $1–2 million | INTEGRITY INTERIORS, INC. | LANSING, MI | Horizon Bank |
| $2–5 million | INTERCARE COMMUNITY HEALTH NETWORK | BANGOR, MI | Horizon Bank |
| $2–5 million | INTERIOR SPECIALTIES, INC. | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | J ENTERPRISE INN OF EXECUTIVE DRIVE LLC | Edinburgh, IN | Horizon Bank |
| $150,000–350,000 | J ENTERPRISE INN OF EXECUTIVE DRIVE, LLC | EDINBURGH, IN | Horizon Bank |
| $150,000–350,000 | J ENTERPRISES INN | EDINBURGH, IN | Horizon Bank |
| $150,000–350,000 | J ENTERPRISES INN OF COLUMBUS LLC | EDINBURGH, IN | Horizon Bank |
| $1–2 million | J M ADJUSTMENT | Sterling Heights, MI | Horizon Bank |
| $150,000–350,000 | J. L. MILLING INC. | Schoolcraft, MI | Horizon Bank |
| $150,000–350,000 | J. L. MILLING INC. | SCHOOLCRAFT, MI | Horizon Bank |
| $150,000–350,000 | J. SHOFFNER GENERAL CONTRACTOR, INC. | LA PORTE, IN | Horizon Bank |
| $1–2 million | J. VIRGIL INC | NORTH PALM BEACH, FL | Horizon Bank |
| $350,000–1 million | J.L. ANDERSON HEATING & COOLING, INC. | LAFAYETTE, IN | Horizon Bank |
| $1–2 million | J.M. ADJUSTMENT SERVICES, LLC | STERLING HEIGHTS, MI | Horizon Bank |
| $150,000–350,000 | JACK CONNORS INC | Chesterton, IN | Horizon Bank |
| $150,000–350,000 | JACK CONNORS, INC. | CHESTERTON, IN | Horizon Bank |
| $350,000–1 million | JAMES A ANDREW INC. | LAFAYETTE, IN | Horizon Bank |
| $350,000–1 million | JAMES SCHARER MASONRY INC | WEST LAFAYETTE, IN | Horizon Bank |
| $150,000–350,000 | JASON M. KLEIN AND ASSOCIATES | PORTAGE, MI | Horizon Bank |
| $150,000–350,000 | JCP LLC | Saginaw, MI | Horizon Bank |
| $150,000–350,000 | JCP, LLC | SAGINAW, MI | Horizon Bank |
| $350,000–1 million | JDE CONCRETE INC | Jenison, MI | Horizon Bank |
| $350,000–1 million | JDE CONCRETE INC | JENISON, MI | Horizon Bank |
| $150,000–350,000 | JDE CONCRETE PUMPING, INC | JENISON, MI | Horizon Bank |
| $150,000–350,000 | JOHN A. EVANS, INC. | CHESTERTON, IN | Horizon Bank |
| $150,000–350,000 | JOHN FREISTROFFER | Fort Wayne, IN | Horizon Bank |
| $150,000–350,000 | JOHN WARD CONCRETE, INC. | OSCEOLA, IN | Horizon Bank |
| $350,000–1 million | JOHNSON HEATING AND COOLING, INC. | FRANKLIN, IN | Horizon Bank |
| $150,000–350,000 | JPA FOSTER, LLC | LAFAYETTE, IN | Horizon Bank |
| $350,000–1 million | JUNUS CORPORATION | Valparaiso, IN | Horizon Bank |
| $350,000–1 million | JUNUS CORPORATION | VALPARAISO, IN | Horizon Bank |
| $350,000–1 million | K & JK ENTERPISES, INC. | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | K.G.M., INC. | MUNSTER, IN | Horizon Bank |
| $150,000–350,000 | KALAMAZOO ENTERTAINMENT, LLC | KALAMAZOO, MI | Horizon Bank |
| $350,000–1 million | KALAMAZOO LONG TERM CARE, LLC | KALAMAZOO, MI | Horizon Bank |
| $150,000–350,000 | KALAMAZOO PEDIATRIC DENTISTRY, PLLC | PORTAGE, MI | Horizon Bank |
| $150,000–350,000 | KASSOUNI MANUFACTURING, INC. | BELDING, MI | Horizon Bank |
| $150,000–350,000 | KDR INC | Porter, IN | Horizon Bank |
| $150,000–350,000 | KELLER MACHINE AND WELDING INC | VALPARAISO, IN | Horizon Bank |
| $150,000–350,000 | KENNETH J ALLEN & ASSOCIATES PC | VALPARAISO, IN | Horizon Bank |
| $150,000–350,000 | KENNETH J. ALLEN LAW GROUP, LLC | VALPARAISO, IN | Horizon Bank |
| $150,000–350,000 | KEYSTONE PHARMACY, INC. | GRAND RAPIDS, MI | Horizon Bank |
| $150,000–350,000 | KLOOZ PLUMBING & SUPPLY INC | LAFAYETTE, IN | Horizon Bank |
| $150,000–350,000 | KLOOZ PLUMBING S | Lafayette, IN | Horizon Bank |
| $350,000–1 million | KONRADY PLASTICS, INC | PORTAGE, IN | Horizon Bank |
| $350,000–1 million | KRIMSON LLC | East Lansing, MI | Horizon Bank |
| $350,000–1 million | KRIMSON, LLC | EAST LANSING, MI | Horizon Bank |
| $150,000–350,000 | KRKM LEASING CO, INC. | LANSING, MI | Horizon Bank |
| $150,000–350,000 | L E BARBER INC | Benton Harbor, MI | Horizon Bank |
| $150,000–350,000 | L. E. BARBER, INC. | BENTON HARBOR, MI | Horizon Bank |
| $150,000–350,000 | LA MARGARITA F | Indianapolis, IN | Horizon Bank |
| $150,000–350,000 | LA MARGARITA FOUNTAIN SQUARE, INC. | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | LAFAYETTE MASONRY SUPPLY, INC. | LAFAYETTE, IN | Horizon Bank |
| $350,000–1 million | LAKE MICHIGAN CATHOLIC SCHOOLS | Saint Joseph, MI | Horizon Bank |
| $350,000–1 million | LAKE MICHIGAN CATHOLIC SCHOOLS | SAINT JOSEPH, MI | Horizon Bank |
| $150,000–350,000 | LAKE SAVERS, LLC | RICHLAND, MI | Horizon Bank |
| $150,000–350,000 | LAKESHORE EYECARE CENTER P.C. | Holland, MI | Horizon Bank |
| $150,000–350,000 | LAKESHORE RECYCLE AND DISPOSAL LLC | NEW BUFFALO, MI | Horizon Bank |
| $350,000–1 million | LAKESIDE FINANCIAL GROUP, LLC | CHESTERTON, IN | Horizon Bank |
| $350,000–1 million | LANDMARK SIGNS, INC. | CHESTERTON, IN | Horizon Bank |
| $150,000–350,000 | LANSING PSYCHOLOGICAL ASSOCIATES INC | East Lansing, MI | Horizon Bank |
| $150,000–350,000 | LANSING PSYCHOLOGICAL ASSOCIATES, INC. | EAST LANSING, MI | Horizon Bank |
| $150,000–350,000 | LANSING SENIOR PARTNERS LLC | Indianapolis, IN | Horizon Bank |
| $1–2 million | LANSING URGENT CARE, PLC, A MICHIGAN PROFESSIONAL LIMITED LI | LANSING, MI | Horizon Bank |
| $150,000–350,000 | LAPORTE CO CONVENTION & VISITORS BUREAU | MICHIGAN CITY, IN | Horizon Bank |
| $150,000–350,000 | LAPORTE COUNTY ANESTHESIA ASSOCIATES LLC | MICHIGAN CITY, IN | Horizon Bank |
| $150,000–350,000 | LAPORTE WINGS, LLC | LA PORTE, IN | Horizon Bank |
| $150,000–350,000 | LARGUS SPEEDY PRINT CORP | Munster, IN | Horizon Bank |
| $150,000–350,000 | LARGUS SPEEDY PRINT CORP., CAROL I. LARGUS AND TOM D. LARGUS | MUNSTER, IN | Horizon Bank |
| $1–2 million | LATIMER HERREMA LLC | Grand Rapids, MI | Horizon Bank |
| $150,000–350,000 | LEBANON WINGS LLC | La Porte, IN | Horizon Bank |
| $350,000–1 million | LEGACY SEED COMPANIES, LLC | SCANDINAVIA, WI | Horizon Bank |
| $150,000–350,000 | LEVANNES INC. | Portage, MI | Horizon Bank |
| $150,000–350,000 | LIBERTY PRECIOUS METALS INC | LANSING, MI | Horizon Bank |
| $150,000–350,000 | LIFE CENTERS INC | Indianapolis, IN | Horizon Bank |
| $150,000–350,000 | LIFE CENTERS, INC. | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | LINEAR ELECTRIC INC | Benton Harbor, MI | Horizon Bank |
| $150,000–350,000 | LIQUID WASTE REMOVAL, INC. | GREENWOOD, IN | Horizon Bank |
| $350,000–1 million | LITHOGRAPHIC COMMUNICATIONS LLC | Munster, IN | Horizon Bank |
| $350,000–1 million | LITHOGRAPHIC COMMUNICATIONS, LLC | MUNSTER, IN | Horizon Bank |
| $150,000–350,000 | LIVING WORD INTERNATIONAL, INC. | MIDLAND, MI | Horizon Bank |
| $150,000–350,000 | LMNJC, INC. | MICHIGAN CITY, IN | Horizon Bank |
| $150,000–350,000 | LOGANSPORT WINGS L | La Porte, IN | Horizon Bank |
| $150,000–350,000 | LOGANSPORT WINGS LLC | LOGANSPORT, IN | Horizon Bank |
| $1–2 million | LOOSE PLASTICS INC | Gladwin, MI | Horizon Bank |
| $1–2 million | LOOSE PLASTICS INC. | GLADWIN, MI | Horizon Bank |
| $150,000–350,000 | LOS TRES AMIGOS FARMINGTON DOWNTOWN LLC | Williamston, MI | Horizon Bank |
| $350,000–1 million | LOWE'S PELLETS & GRAIN, INC | GREENSBURG, IN | Horizon Bank |
| $2–5 million | LOWER GREAT LAKES KENWORTH, INC. | SOUTH BEND, IN | Horizon Bank |