| $350,000–1 million | MATERIAL DIFFERENCE TECHNOLOGIES | SARASOTA, FL | Busey Bank |
| $350,000–1 million | MATTEX SERVICE COMPANY | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | MAX AIR TECHNOLOGY, INC. | WENTZVILLE, MO | Busey Bank |
| $150,000–350,000 | MAX AUTENRIEB CHURCH INTERIOR DECORATING INC. | EDWARDSVILLE, IL | Busey Bank |
| $150,000–350,000 | MB STEEL COMPANY, INC. | MADISON, IL | Busey Bank |
| $150,000–350,000 | MCCABE'S FLEET MAINTENANCE, INC. | FORT MYERS, FL | Busey Bank |
| $350,000–1 million | MCCAY TOOL & ENGINEERING CO., INC. | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | MCCLURE FINANCIAL GROUP, INC. | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | MCCOY SERVICES INC | CHANNAHON, IL | Busey Bank |
| $350,000–1 million | MCKELVIE, KROLL, MELLOH, ZIEMBA, AND ASSOCIATES DVM PA | CAPE CORAL, FL | Busey Bank |
| $150,000–350,000 | MCMAHON GROUP, INC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | MCNAUGHTON DEVELOPMENT, LLC | WILLOWBROOK, IL | Busey Bank |
| $150,000–350,000 | MCNICHOLL COUNSELING P.C. | CHAMPAIGN, IL | Busey Bank |
| $350,000–1 million | MD HOLDINGS, LLC | MOORESVILLE, IN | Busey Bank |
| $150,000–350,000 | MDS MANUFACTURING, LLC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | MEADOWVIEW LAWN CARE, INC. | PEORIA, IL | Busey Bank |
| $350,000–1 million | MECO ERECTION, INC. | MORRIS, IL | Busey Bank |
| $150,000–350,000 | MEDIEQUIP, INC. | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | MEDSOURCE LLC | BLOOMINGTON, IL | Busey Bank |
| $150,000–350,000 | MERICHKA'S, INC | CREST HILL, IL | Busey Bank |
| $150,000–350,000 | MERMAID BUSINESS LLC | GRAND RAPIDS, MI | Busey Bank |
| $150,000–350,000 | MESON SABIKA, INC. | NAPERVILLE, IL | Busey Bank |
| $1–2 million | METAL TECHNOLOGIES, INC. | BEDFORD, IN | Busey Bank |
| $150,000–350,000 | METALLINE INC. | JOLIET, IL | Busey Bank |
| $350,000–1 million | METRITECH, INC. | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | METRO EAST LUTHERAN HIGH SCHOOL ASSOCIATION, INC. | EDWARDSVILLE, IL | Busey Bank |
| $2–5 million | METRO-WEST ANESTHESIA GROUP, INC | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | MEYER ENTERPRISES LLC | EAST PEORIA, IL | Busey Bank |
| $2–5 million | MHS LEGACY GROUP, INC. | SAINT LOUIS, MO | Busey Bank |
| $2–5 million | MICHUDA CONSTRUCTION, INC. | TINLEY PARK, IL | Busey Bank |
| $150,000–350,000 | MICROPLASMA OZONE TECHNOLOGIES, INC | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | MIDCO GLOBAL, INC | KIRKWOOOD, MO | Busey Bank |
| $350,000–1 million | MIDWEST ENGINEERING AND TESTING, INC. | CHAMPAIGN, IL | Busey Bank |
| $350,000–1 million | MIDWEST INDUSTRIAL SALES, INC. | GARDNER, IL | Busey Bank |
| $150,000–350,000 | MIDWEST MEP, INC. | WILLOWBROOK, IL | Busey Bank |
| $350,000–1 million | MIDWEST PROPERTY MANAGEMENT LIMITED PARTNERSHIP | JACKSONVILLE, IL | Busey Bank |
| $150,000–350,000 | MIKE'S AUTOMOTIVE MACHINE SHOP, INC. | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | MIKE'S, INC. | SOUTH ROXANA, IL | Busey Bank |
| $350,000–1 million | MILLENNIUM MANAGEMENT & CONSULTING, INC. | SAINT LOUIS, MO | Busey Bank |
| $1–2 million | MILLER GROUP USA, LLC | BLOOMINGTON, IL | Busey Bank |
| $150,000–350,000 | MINOOKA SUPPORTIVE LIVING LLC | MINOOKA, IL | Busey Bank |
| $150,000–350,000 | MITCHELL & MITCHELL, D.D.S, P.A. | FORT MYERS, FL | Busey Bank |
| $150,000–350,000 | MLT GROUP INC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | MOBIUS THERAPEUTICS, LLC | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | MODERN PROCESS EQUIPMENT CORPORATION | CHICAGO, IL | Busey Bank |
| $2–5 million | MONICAL PIZZA CORPORATION | BRADLEY, IL | Busey Bank |
| $150,000–350,000 | MONOCLE, INC. | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | MOOSYLVANIA MARKETING, L.C. | SAINT LOUIS, MO | Busey Bank |
| $1–2 million | MORRIS MACHINE CO. | INDIANAPOLIS, IN | Busey Bank |
| $150,000–350,000 | MOSAIC MANAGEMENT DEERFIELD, LLC | NORTHBROOK, IL | Busey Bank |
| $350,000–1 million | MOTOR APPLIANCE CORPORATION | WASHINGTON, MO | Busey Bank |
| $350,000–1 million | MOUNT CARMEL COMMUNITIES - O'FALLON, LLC | O FALLON, MO | Busey Bank |
| $2–5 million | MRM HOLDING COMPANY, INC | DECATUR, IL | Busey Bank |
| $350,000–1 million | MTC HOLSTERS, LLC | SPRINGFIELD, MO | Busey Bank |
| $150,000–350,000 | MUGSY'S PUB, INC. | BLOOMINGTON, IL | Busey Bank |
| $1–2 million | MURPHY PAVING AND SEALCOATING, INC. | LEMONT, IL | Busey Bank |
| $350,000–1 million | NAPERVILLE MARKET, INC. | NAPERVILLE, IL | Busey Bank |
| $350,000–1 million | NAPERVILLE MEAT MARKET, INC | NAPERVILLE, IL | Busey Bank |
| $350,000–1 million | NARVICK BROTHERS LUMBER CO., INC. | MORRIS, IL | Busey Bank |
| $350,000–1 million | NASAW/DOUGLAS AND ASSOCIATES LTD. | BURR RIDGE, IL | Busey Bank |
| $150,000–350,000 | NATHANI ELITE MANAGEMENT NETWORK, INC | GLENVIEW, IL | Busey Bank |
| $350,000–1 million | NATIONAL COUNCIL OF TEACHERS OF ENGLISH | CHAMPAIGN, IL | Busey Bank |
| $1–2 million | NATIONAL DESIGN BUILD SERVICES LLC | SAINT LOUIS, MO | Busey Bank |
| $1–2 million | NATIONAL HOSPICE MANAGEMENT INC | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | NATIONAL SALES COMPANY | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | NATURE'S BLUEPRINT OF SOUTHWEST FLORIDA, LLC | FORT MYERS, FL | Busey Bank |
| $350,000–1 million | NEAL AUTO PARTS, INC | PEORIA, IL | Busey Bank |
| $150,000–350,000 | NEATO AGENCY, LLC | CHICAGO, IL | Busey Bank |
| $150,000–350,000 | NEIGHBORHOOD HOUSE ASSOCIATION | PEORIA, IL | Busey Bank |
| $150,000–350,000 | NENNINGER FOODS, LLC | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | NETCOM, INC | WHEELING, IL | Busey Bank |
| $150,000–350,000 | NETWORK PERCEPTION, INC. | CHICAGO, IL | Busey Bank |
| $2–5 million | NEUMAYER EQUIPMENT COMPANY | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | NEVERMAN FLOOR ARTISANS, INC. | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | NEW CENTURY ARMORED LOGISTICS LLC | HAZELWOOD, MO | Busey Bank |
| $150,000–350,000 | NEW PRAIRIE CONSTRUCTION COMPANY | URBANA, IL | Busey Bank |
| $1–2 million | NEW S.B.L. INC. | CHICAGO, IL | Busey Bank |
| $1–2 million | NEWCO ENTERPRISES, INC. | SAINT CHARLES, MO | Busey Bank |
| $150,000–350,000 | NEWMAN ARCHITECTURE, INC. | NAPERVILLE, IL | Busey Bank |
| $1–2 million | NEWMAN CARRIERS INC. | FAIRMONT CITY, IL | Busey Bank |
| $150,000–350,000 | NEWTEC WINDOW & DOOR INC | CHICAGO, IL | Busey Bank |
| $150,000–350,000 | NICHOLS VETERINARY SERVICES, P.C. | WASHINGTON, IL | Busey Bank |
| $350,000–1 million | NORMAL BLOOMINGTON ANESTHESIOLOGISTS, LTD | NAPERVILLE, IL | Busey Bank |
| $350,000–1 million | NORTH PORT RETIREMENT CENTER INC. | NORTH PORT, FL | Busey Bank |
| $1–2 million | NORTH SHORE COMPANIONS, INC. | NORTHBROOK, IL | Busey Bank |
| $150,000–350,000 | NORTH STATES STEEL CORP. | HEBRON, IL | Busey Bank |
| $150,000–350,000 | NORTHCENTER LIGHTHOUSE LLC | CHICAGO, IL | Busey Bank |
| $150,000–350,000 | NORTHEAST NEPHROLOGY CONSULTANTS, LTD. | JOLIET, IL | Busey Bank |
| $2–5 million | NORTHWEST ONCOLOGY & HEMATOLOGY, S. C. | ROLLING MEADOWS, IL | Busey Bank |
| $1–2 million | NOTRE DAME HIGH SCHOOL OF PEORIA, INC. | PEORIA, IL | Busey Bank |
| $150,000–350,000 | NPN ENVIRONMENTAL ENGINEERS, INC | FENTON, MO | Busey Bank |
| $5–10 million | NRRM, LLC | SAINT PETERS, MO | Busey Bank |
| $350,000–1 million | NUTRACOM LLC | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | O & O HOSPITALITY, LLC | SAINT LOUIS, MO | Busey Bank |
| $1–2 million | OAK BROOK MECHANICAL SERVICES, INC. | ELMHURST, IL | Busey Bank |
| $350,000–1 million | OAKLEY SIGNS HOLDINGS, LLC | NEW YORK, NY | Busey Bank |
| $150,000–350,000 | OASIS PAINTING SERVICE, INC. | HOMER GLEN, IL | Busey Bank |
| $350,000–1 million | OATES ASSOCIATES, INC. | COLLINSVILLE, IL | Busey Bank |
| $350,000–1 million | OFDC COMMERCIAL INTERIORS, INC | FORT MYERS, FL | Busey Bank |
| $150,000–350,000 | OLD OAK COUNTRY CLUB INC | HOMER GLEN, IL | Busey Bank |