| $350,000–1 million | HORIZON FINANCIAL MANAGEMENT, LLC | CROWN POINT, IN | Horizon Bank |
| $150,000–350,000 | HORIZON MECHANICAL, INC. | WATERLOO, IN | Horizon Bank |
| $150,000–350,000 | HOUGHTON MANUFACTURING CO | VICKSBURG, MI | Horizon Bank |
| $1–2 million | HUNTER PRELL COMPANY | BATTLE CREEK, MI | Horizon Bank |
| $350,000–1 million | HUYSER ASPHALT SEALING COMPANY | GRAND RAPIDS, MI | Horizon Bank |
| $150,000–350,000 | HYDRODYNAMICS INTERNATIONAL INC | LANSING, MI | Horizon Bank |
| $150,000–350,000 | I-70 WRECKER SERVICE & GARAGE | CAMBY, IN | Horizon Bank |
| $150,000–350,000 | I-CARE ENTERPRISES INC | GREENWOOD, IN | Horizon Bank |
| $350,000–1 million | IN MOTION ORTHOPAEDICS INC | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | INDIANA CONTINUING LEGAL EDUCATION FORUM | INDIANAPOLIS, IN | Horizon Bank |
| $1–2 million | INDIANA HEALTH CENTERS INCORPORATED | INDIANAPOLIS, IN | Horizon Bank |
| $350,000–1 million | INDIANA PAGING NETWORK, INC. | LA PORTE, 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 |
| $350,000–1 million | INSULATION SPECIALTIES OF AMERICA, INC. | WANATAH, IN | Horizon Bank |
| $350,000–1 million | INTEGRATED ARCHITECTURE, L.L.C. | GRAND RAPIDS, 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 ENTERPRISES INN OF COLUMBUS LLC | EDINBURGH, IN | 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 |
| $150,000–350,000 | J.L. MILLING INC. | SCHOOLCRAFT, MI | 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 |
| $350,000–1 million | JDE CONCRETE INC | JENISON, MI | Horizon Bank |
| $150,000–350,000 | JDE CONCRETE PUMPING, INC | JENISON, MI | Horizon Bank |
| $1–2 million | JM ADJUSTMENT SERVICES LLC | STERLING HEIGHTS, MI | Horizon Bank |
| $150,000–350,000 | JOHN A. EVANS, INC. | CHESTERTON, 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 | JOYCE HEFTY-COVELL INSURANCE AGENCY INC | AUBURN, 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 | 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 | 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 |
| $350,000–1 million | KONRADY PLASTICS, INC | PORTAGE, IN | 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 | 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 |
| $150,000–350,000 | LAKE SAVERS, LLC | RICHLAND, 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 |
| $1–2 million | LANSING URGENT CARE, PLC, A MICHIGAN PROFESSIONAL LIMITED LIABILITY COMPANY | 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., CAROL I. LARGUS AND TOM D. LARGUS | MUNSTER, IN | Horizon Bank |
| $350,000–1 million | LEGACY SEED COMPANIES, LLC | SCANDINAVIA, WI | 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 | LIQUID WASTE REMOVAL, INC. | GREENWOOD, 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 LLC | LOGANSPORT, IN | Horizon Bank |
| $1–2 million | LOOSE PLASTICS INC. | GLADWIN, 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 |
| $150,000–350,000 | LP WING IT, LLC | MICHIGAN CITY, IN | Horizon Bank |
| $150,000–350,000 | MAGLISH PLUMBING HEATING & ELECTRIC LLC | PORTAGE, IN | Horizon Bank |
| $150,000–350,000 | MAGNUM CONSTRUCTION COMPANY, INC. | MIDLAND, MI | Horizon Bank |
| $350,000–1 million | MALLORY SONALERT PRODUCTS, INC | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | MALONE SPORTS CENTER, LLC | WEST LAFAYETTE, IN | Horizon Bank |
| $150,000–350,000 | MARACOR, INC | WALTON, IN | Horizon Bank |
| $150,000–350,000 | MARCO BREW, LLC | MARCO ISLAND, FL | Horizon Bank |
| $150,000–350,000 | MARCO SPEAK, LLC | MARCO ISLAND, FL | Horizon Bank |
| $150,000–350,000 | MARINE EAST INC | LA PORTE, IN | Horizon Bank |
| $150,000–350,000 | MASONRY COSMETICS, INC | SOUTH BEND, IN | Horizon Bank |
| $2–5 million | MASTER ELECTRIC, INC. | GLADWIN, MI | Horizon Bank |
| $1–2 million | MATERIAL HANDLING EXCHANGE, INC. | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | MAYSVILLE WINGS, LLC | FORT WAYNE, IN | Horizon Bank |
| $150,000–350,000 | MCFARLAND HOMES MANAGEMENT, LLC | HIGHLAND, IN | Horizon Bank |
| $150,000–350,000 | MCGUIRK SAND & GRAVEL, INC. | MOUNT PLEASANT, MI | Horizon Bank |
| $150,000–350,000 | MECHANICSVILLE WINGS LLC | MECHANICSVILLE, VA | Horizon Bank |
| $150,000–350,000 | MEDICAL BUSINESS OFFICE CORP | SCHERERVILLE, IN | Horizon Bank |
| $350,000–1 million | METRO ELEVATOR COMPANY, INC | INDIANAPOLIS, IN | Horizon Bank |
| $150,000–350,000 | MICHIGAN CITY ANIMAL HOSPITAL | MICHIGAN CITY, IN | Horizon Bank |
| $150,000–350,000 | MICHIGAN CITY BREWING COMPANY, INC. | MICHIGAN CITY, IN | Horizon Bank |
| $150,000–350,000 | MICHIGAN HOME REHABILITATION, LLC | JENISON, MI | Horizon Bank |