| $350,000–1 million | MAGNUM CONSTRUCTION, INC | EVANSVILLE, IN | Old National Bank |
| $150,000–350,000 | MAHER WATER CORPORATION | STEVENS POINT, WI | Old National Bank |
| $350,000–1 million | MAINSTREAM FASHIONS INC. | Minneapolis, MN | Old National Bank |
| $350,000–1 million | MAINSTREAM FASHIONS, INC. | MINNEAPOLIS, MN | Old National Bank |
| $2–5 million | MAJOR MECHANICAL, INC. | Maple Grove, MN | Old National Bank |
| $350,000–1 million | MANOR ELECTRIC INC. | Maple Plain, MN | Old National Bank |
| $350,000–1 million | MANOR ELECTRIC, INC | MAPLE PLAIN, MN | Old National Bank |
| $150,000–350,000 | MANVEE CML INDIANA INC | MERRILLVILLE, IN | Old National Bank |
| $350,000–1 million | MANVEE CML, INC. | GREENDALE, WI | Old National Bank |
| $350,000–1 million | MAPLE LEAF INC | VERONA, WI | Old National Bank |
| $350,000–1 million | MAPLE LEAF INC. | Verona, WI | Old National Bank |
| $150,000–350,000 | MARIMBA AUTO LLC | Canton, MI | Old National Bank |
| $150,000–350,000 | MARIMBA AUTO, LLC | CANTON, MI | Old National Bank |
| $150,000–350,000 | MARK A ALLEN DDS PC | KALAMAZOO, MI | Old National Bank |
| $150,000–350,000 | MARK A ALLEN DDS PC | Kalamazoo, MI | Old National Bank |
| $2–5 million | MARKEY'S AUDIO-VISUAL, INC. | INDIANAPOLIS, IN | Old National Bank |
| $2–5 million | MARKEY'S AUDIO/VISUAL INC. | Indianapolis, IN | Old National Bank |
| $350,000–1 million | MARLAR INC. | ANDOVER, MN | Old National Bank |
| $150,000–350,000 | MARTIN COUNTY REALTY LLC | LOOGOOTEE, IN | Old National Bank |
| $150,000–350,000 | MARTIN COUNTY REALTY LLC | Carmel, IN | Old National Bank |
| $350,000–1 million | MARTINEZ GEOSPATIAL INC | Eagan, MN | Old National Bank |
| $350,000–1 million | MARTINEZ GEOSPATIAL INC. | Saint Paul, MN | Old National Bank |
| $150,000–350,000 | MARTY'S AUTO SALES INC | SAVAGE, MN | Old National Bank |
| $2–5 million | MASTER ELECTRIC CO INC | SAVAGE, MN | Old National Bank |
| $150,000–350,000 | MASTER LOGISTICS CO., INC | MINNEAPOLIS, MN | Old National Bank |
| $2–5 million | MASTER MECHANICAL, INC. | Eagan, MN | Old National Bank |
| $350,000–1 million | MASTER TRANSFER CO,. INC | MINNEAPOLIS, MN | Old National Bank |
| $150,000–350,000 | MATCHLESS PLASTICS INC. | Minneapolis, MN | Old National Bank |
| $150,000–350,000 | MATCHLESS PLASTICS, INC. | MINNEAPOLIS, MN | Old National Bank |
| $350,000–1 million | MATER DEI HIGH SCHOOL | EVANSVILLE, IN | Old National Bank |
| $150,000–350,000 | MATHISON / MATHISON ARCHITECTS LLC | GRAND RAPIDS, MI | Old National Bank |
| $350,000–1 million | MAUD BORUP INC. | Plymouth, MN | Old National Bank |
| $350,000–1 million | MAUD BORUP, INC. | MINNEAPOLIS, MN | Old National Bank |
| $350,000–1 million | MAVEN CONSTRUCTION & ENVIRONMENTAL, LLC | ODON, IN | Old National Bank |
| $350,000–1 million | MAVERICK CUTTING & BREAKING LLC | Minneapolis, MN | Old National Bank |
| $350,000–1 million | MAVERICK CUTTING & BREAKING, LLC | MINNEAPOLIS, MN | Old National Bank |
| $350,000–1 million | MAX STEININGER, INC. | Eagan, MN | Old National Bank |
| $1–2 million | MAYFLOWER DISTRIBUTING COMPANY | SAINT PAUL, MN | Old National Bank |
| $350,000–1 million | MBA ENGINEERING, INC. | SAINT PAUL, MN | Old National Bank |
| $150,000–350,000 | MCAULIFFES PROCESSING INC | ADDISON, MI | Old National Bank |
| $350,000–1 million | MCCORMICK COMPUTER RESALE, INC | SAINT PAUL, MN | Old National Bank |
| $150,000–350,000 | MCDUFF, INC | INDIANAPOLIS, IN | Old National Bank |
| $350,000–1 million | MCF CONSTRUCTION, INC | NEWBURGH, IN | Old National Bank |
| $2–5 million | MCL INC | Indianapolis, IN | Old National Bank |
| $2–5 million | MCL, INC. | INDIANAPOLIS, IN | Old National Bank |
| $2–5 million | MCNAMARA CONTRACTING, INC. | ROSEMOUNT, MN | Old National Bank |
| $350,000–1 million | MCNEELY LAW LLP | SHELBYVILLE, IN | Old National Bank |
| $350,000–1 million | MCPHILLIPS BROS. ROOFING COMPANY | SAINT PAUL, MN | Old National Bank |
| $350,000–1 million | MCSHANE & BOWIE, PLC | GRAND RAPIDS, MI | Old National Bank |
| $150,000–350,000 | MEADOW GREEN LAWN, INC. | LAKEVILLE, MN | Old National Bank |
| $150,000–350,000 | MECHANICAL MAINTENANCE AND FABRICATION | SPOTTSVILLE, KY | Old National Bank |
| $150,000–350,000 | MECHANICAL RUBBER & TRANSMISSION, INC. | GRAND RAPIDS, MI | Old National Bank |
| $1–2 million | MECO COMPANY, LLC | PARIS, IL | Old National Bank |
| $150,000–350,000 | MEDIC ON SITE SERVICES | EVANSVILLE, IN | Old National Bank |
| $150,000–350,000 | MEDICAL & PROFESSIONAL COLLECTION SERVICES | NEWBURGH, IN | Old National Bank |
| $150,000–350,000 | MEDIEVAL METALWERX LLC | Mankato, MN | Old National Bank |
| $150,000–350,000 | MEDIEVAL METALWERX, LLC | MANKATO, MN | Old National Bank |
| $150,000–350,000 | MEDISPHERE MEDICAL RESEARCH CENTER LLC | Evansville, IN | Old National Bank |
| $350,000–1 million | MEL FOSTER COMPANY, INC. | HOPKINS, MN | Old National Bank |
| $350,000–1 million | MELCHERT HUBERT SJODIN PLLP | Waconia, MN | Old National Bank |
| $350,000–1 million | MELCHERT HUBERT SJODIN, PLLP | WACONIA, MN | Old National Bank |
| $150,000–350,000 | MEMNON ARCHIVING SERVICES INC. | Bloomington, IN | Old National Bank |
| $150,000–350,000 | MEMNON ARCHIVING SERVICES INC. | BLOOMINGTON, IN | Old National Bank |
| $150,000–350,000 | MEMORIAL COMMUNITY DEVELOPMENT CORPORATION | Evansville, IN | Old National Bank |
| $150,000–350,000 | MENDOTA HEIGHTS WP LLC | SAINT PAUL, MN | Old National Bank |
| $150,000–350,000 | MENDOTA PRODUCTS, INC. | SAINT PAUL, MN | Old National Bank |
| $150,000–350,000 | MENDOTA VALLEY AMUSEMENT INC. | SOUTH SAINT PAUL, MN | Old National Bank |
| $150,000–350,000 | MENTAL HEALTH AMERICA IN ALLEN COUNTY, INC. | FORT WAYNE, IN | Old National Bank |
| $150,000–350,000 | MERCURY INC. | Minneapolis, MN | Old National Bank |
| $150,000–350,000 | MERCURY, INC. | MINNEAPOLIS, MN | Old National Bank |
| $2–5 million | MERVIS INDUSTRIES INC | DANVILLE, IL | Old National Bank |
| $350,000–1 million | METAL TREATERS INC | SAINT PAUL, MN | Old National Bank |
| $350,000–1 million | METES & BOUNDS MANAGEMENT COMPANY | MINNEAPOLIS, MN | Old National Bank |
| $1–2 million | METRO MOLD & DESIGN, LLC | ROGERS, MN | Old National Bank |
| $150,000–350,000 | METRO SIDING, INC | ELK RIVER, MN | Old National Bank |
| $150,000–350,000 | METROPOLITAN EVANSVILLE CHAMBER OF COMMERCE INC. | Evansville, IN | Old National Bank |
| $150,000–350,000 | METROPOLITAN EVANSVILLE CHAMBER OF COMMERCE INCORPORATED | Evansville, IN | Old National Bank |
| $150,000–350,000 | METZGER'S INC | KALAMAZOO, MI | Old National Bank |
| $1–2 million | MEYER & NAJEM, INC. | FISHERS, IN | Old National Bank |
| $1–2 million | MEYER, BORGMAN, & JOHNSON, INC. | MINNEAPOLIS, MN | Old National Bank |
| $150,000–350,000 | MEZ CORP | South Bend, IN | Old National Bank |
| $150,000–350,000 | MEZ CORP | SOUTH BEND, IN | Old National Bank |
| $350,000–1 million | MHC BUNKER HILLS LLC | Saint Paul, MN | Old National Bank |
| $350,000–1 million | MHC BUNKER HILLS LLC | SAINT PAUL, MN | Old National Bank |
| $1–2 million | MHC CULINARY GROUP LLC | Saint Paul, MN | Old National Bank |
| $350,000–1 million | MHC CULINARY GROUP, LLC | SAINT PAUL, MN | Old National Bank |
| $350,000–1 million | MHC NORTH OAKS LLC | Saint Paul, MN | Old National Bank |
| $150,000–350,000 | MHC NORTH OAKS LLC | SAINT PAUL, MN | Old National Bank |
| $2–5 million | MHC SPH LLC | SAINT PAUL, MN | Old National Bank |
| $150,000–350,000 | MIBIZ INC | GRAND RAPIDS, MI | Old National Bank |
| $150,000–350,000 | MIBIZ INC. | Grand Rapids, MI | Old National Bank |
| $150,000–350,000 | MICHEL SALES AGENCY, INC. | SAINT PAUL, MN | Old National Bank |
| $1–2 million | MICHIGAN CRITICAL CARE CONSULTANTS INC. | DEXTER, MI | Old National Bank |
| $350,000–1 million | MICHIGAN DIE CASTING | CHICAGO, IL | Old National Bank |
| $150,000–350,000 | MICHIGAN GUM DOCS | SOUTHFIELD, MI | Old National Bank |
| $150,000–350,000 | MICHIGAN TITLE INSURANCE AGENCY INC. | Taylor, MI | Old National Bank |
| $150,000–350,000 | MICHIGAN TITLE INSURANCE AGENCY, INC. | TAYLOR, MI | Old National Bank |
| $2–5 million | MICRO CONTROL COMPANY | MINNEAPOLIS, MN | Old National Bank |
| $150,000–350,000 | MICROBOARDS TECHNOLOGY LLC | CHANHASSEN, MN | Old National Bank |
| $150,000–350,000 | MICROCANNER LLC | Rockford, MI | Old National Bank |