| $2–5 million | CORNERSTONE SERVICES | JOLIET, IL | First Midwest Bank |
| $150,000–350,000 | CORRIGAN CORPORATION OF AMERICA | GURNEE, IL | First Midwest Bank |
| $1–2 million | CORSETTI STRUCTURAL STEEL | JOLIET, IL | First Midwest Bank |
| $150,000–350,000 | COSTA CONSTRUCTION,INC. | BRIDGEVIEW, IL | First Midwest Bank |
| $150,000–350,000 | COTTAGE SHEET METAL LLC | CHICAGO RIDGE, IL | First Midwest Bank |
| $150,000–350,000 | COUNTRY MEADOWS MONTESSORI SCHOOL | GURNEE, IL | First Midwest Bank |
| $350,000–1 million | COUNTRYSIDE VETERINARY CENTER LLC | COUNTRYSIDE, IL | First Midwest Bank |
| $350,000–1 million | COVE REMEDIATION, LLC | ALSIP, IL | First Midwest Bank |
| $150,000–350,000 | COWBOY CARTAGE CORP. | CHANNAHON, IL | First Midwest Bank |
| $150,000–350,000 | COYNE VETERINARY CENTER - PORTAGE, LLC | PORTAGE, IN | First Midwest Bank |
| $150,000–350,000 | COYNE VETERINARY CENTER - ST. JOHN, LTD | SAINT JOHN, IN | First Midwest Bank |
| $350,000–1 million | COYNE VETERINARY CENTER, LLC | CROWN POINT, IN | First Midwest Bank |
| $150,000–350,000 | COYNE VETERINARY SERVICES, LTD | ORLAND PARK, IL | First Midwest Bank |
| $150,000–350,000 | CRANE PRODUCTION SYSTEMS CORP | WAUKESHA, WI | First Midwest Bank |
| $150,000–350,000 | CRAWFORD ROOFING EXPERTS, LLC | SCHAUMBURG, IL | First Midwest Bank |
| $350,000–1 million | CREATION CARPENTRY CO., INC. | MOKENA, IL | First Midwest Bank |
| $350,000–1 million | CREMATION SOCIETY OF ILLINOIS, INC. | HOMEWOOD, IL | First Midwest Bank |
| $150,000–350,000 | CRESCO LINES, INC. | PHOENIX, IL | First Midwest Bank |
| $150,000–350,000 | CRESTWOOD TOWER SERVICES, INC. | OAK FOREST, IL | First Midwest Bank |
| $350,000–1 million | CROWN METAL MANUFACTURING CO. | ELMHURST, IL | First Midwest Bank |
| $1–2 million | CT MECHANICAL | ADDISON, IL | First Midwest Bank |
| $150,000–350,000 | CUSTOM 77 AUTO REBUILDERS | MIDLOTHIAN, IL | First Midwest Bank |
| $150,000–350,000 | CUSTOM CASE COMPANY INC. | CHICAGO, IL | First Midwest Bank |
| $150,000–350,000 | CUSTOM ELECTRICAL SERVICE, INC. | BURBANK, IL | First Midwest Bank |
| $150,000–350,000 | CUSTOM MOLD SERVICES INC. | MT PROSPECT, IL | First Midwest Bank |
| $350,000–1 million | CUSTOM SERVICE HARDWARE LLC | CEDARBURG, WI | First Midwest Bank |
| $150,000–350,000 | CUSTOM WIRE TECHNOLOGIES, INC. | PORT WASHINGTON, WI | First Midwest Bank |
| $1–2 million | CUT FRESH LLC | MILWAUKEE, WI | First Midwest Bank |
| $150,000–350,000 | CUT TO SIZE TECHNOLOGY, INC. | ADDISON, IL | First Midwest Bank |
| $1–2 million | CUTTERS, INC. | CHICAGO, IL | First Midwest Bank |
| $2–5 million | CYBERBRIDGE INTERNATIONAL INC, DBA CREOSPAN ,INC. | SCHAUMBURG, IL | First Midwest Bank |
| $150,000–350,000 | CYRIL DENTAL CARE, PC | ARLINGTON HEIGHTS, IL | First Midwest Bank |
| $1–2 million | D & A SERVICES, LLC | DES PLAINES, IL | First Midwest Bank |
| $150,000–350,000 | D CONSTRUCTION ENTERPRISES INC | COAL CITY, IL | First Midwest Bank |
| $350,000–1 million | D CONSTRUCTION MANAGEMENT CO., INC. | COAL CITY, IL | First Midwest Bank |
| $5–10 million | D CONSTRUCTION, INC. | COAL CITY, IL | First Midwest Bank |
| $350,000–1 million | D. ARCHITECTURAL METAL SOLUTIONS, INC. | ALSIP, IL | First Midwest Bank |
| $350,000–1 million | D.C. TRICORE INC | WAUKEGAN, IL | First Midwest Bank |
| $150,000–350,000 | D.R. O'DONNELL INC | CORTLAND, IL | First Midwest Bank |
| $350,000–1 million | DALE COYNE RACING, INC. | PLAINFIELD, IL | First Midwest Bank |
| $150,000–350,000 | DALEY'S AMBULANCE SERVICE, LTD | JOLIET, IL | First Midwest Bank |
| $1–2 million | DALEY'S MEDICAL TRANSPORT, INC | DOLTON, IL | First Midwest Bank |
| $150,000–350,000 | DALY FIRE PROTECTION LLC | PALOS HEIGHTS, IL | First Midwest Bank |
| $150,000–350,000 | DARRYLS TRUCKING INC | RICHTON PARK, IL | First Midwest Bank |
| $150,000–350,000 | DATT EXPRESS CORPORATION | CHICAGO, IL | First Midwest Bank |
| $150,000–350,000 | DAVID C CHUA MDSC LTD. | OAKBROOK TERRACE, IL | First Midwest Bank |
| $150,000–350,000 | DAVIS CONCRETE CONSTRUCTION COMPANY | MONEE, IL | First Midwest Bank |
| $150,000–350,000 | DAVIS STREET GROUP LLC | EVANSTON, IL | First Midwest Bank |
| $150,000–350,000 | DEARBORN WHOLESALE LLC | CHICAGO, IL | First Midwest Bank |
| $150,000–350,000 | DEBT PAY GATEWAY, INC | CARDIFF, CA | First Midwest Bank |
| $350,000–1 million | DEBT PAY, INC | SCHAUMBURG, IL | First Midwest Bank |
| $150,000–350,000 | DECAL WORKS | KINGSTON, IL | First Midwest Bank |
| $350,000–1 million | DEDICATED TRANSPORTATION SYSTEMS LLC | DAVENPORT, IA | First Midwest Bank |
| $350,000–1 million | DEERFIELD CONSTRUCTION GROUP, INC. | LOCKPORT, IL | First Midwest Bank |
| $350,000–1 million | DELZER-MARLOW LITHOGRAPH CO. | WAUKESHA, WI | First Midwest Bank |
| $350,000–1 million | DENLER & SONS, INC. | JOLIET, IL | First Midwest Bank |
| $350,000–1 million | DENTAL TECHNOLOGIES, INC | LINCOLNWOOD, IL | First Midwest Bank |
| $350,000–1 million | DERMATOLOGY & AESTHETICS OF WICKER PARK, LLC | CHICAGO, IL | First Midwest Bank |
| $350,000–1 million | DESIGN BUILD FIRE PROTECTION OF WI INC | NEW BERLIN, WI | First Midwest Bank |
| $150,000–350,000 | DESROCHERS BACKYARD POOLS | WILMINGTON, IL | First Midwest Bank |
| $350,000–1 million | DIAMOND FULFILLMENT SERVICES, LLC | WAUKEGAN, IL | First Midwest Bank |
| $150,000–350,000 | DIAMOND READY MIX, INC. | NAPERVILLE, IL | First Midwest Bank |
| $150,000–350,000 | DICK'S TOWING SERVICE, INC | JOLIET, IL | First Midwest Bank |
| $2–5 million | DICKINSON & ASSOCIATES, INC. | CHICAGO, IL | First Midwest Bank |
| $150,000–350,000 | DIGESTIVE MEDICINE ASSOCIATES PC | MERRILLVILLE, IN | First Midwest Bank |
| $150,000–350,000 | DIGITAL COLOR INC | WAUKESHA, WI | First Midwest Bank |
| $150,000–350,000 | DISTRICT COUNCIL TRAINING CENTER | ADDISON, IL | First Midwest Bank |
| $350,000–1 million | DIVELEY DEVELOPMENT CORP | DANVILLE, IL | First Midwest Bank |
| $350,000–1 million | DIXMOOR, INC. | DIXMOOR, IL | First Midwest Bank |
| $1–2 million | DM EXPRESS, INC | GARY, IN | First Midwest Bank |
| $1–2 million | DM MERCHANDISING, INC | ELMHURST, IL | First Midwest Bank |
| $150,000–350,000 | DMK EXPRESS INC | BEDFORD PARK, IL | First Midwest Bank |
| $150,000–350,000 | DO-RITE DIE & ENGINEERING COMPANY | SOUTH CHICAGO HEIGHTS, IL | First Midwest Bank |
| $150,000–350,000 | DOCTORS OF EMERGENCY MEDICINE OF ILLINOIS III | ST CHARLES, IL | First Midwest Bank |
| $350,000–1 million | DOCTORS OF EMERGENCY MEDICINE OF ILLINOIS IV | ST CHARLES, IL | First Midwest Bank |
| $350,000–1 million | DOLTON NURSING & REHAB, LLC | DOLTON, IL | First Midwest Bank |
| $150,000–350,000 | DON & ROY'S CYCLE SHOP, INC | BROOKFIELD, WI | First Midwest Bank |
| $150,000–350,000 | DON 2 JOES, LLC | TINLEY PARK, IL | First Midwest Bank |
| $350,000–1 million | DON JOHNS, INC. | BATAVIA, IL | First Midwest Bank |
| $350,000–1 million | DONALD R. BORG CONSTRUCTION CO., INC. | SCHAUMBURG, IL | First Midwest Bank |
| $1–2 million | DONSON MACHINE COMPANY | ALSIP, IL | First Midwest Bank |
| $150,000–350,000 | DOWNTOWN PET SUPPLY, LLC | WOODRIDGE, IL | First Midwest Bank |
| $150,000–350,000 | DR. MATTHEW E. SCHMIDT & ASSOCIATES OPHTHALMOLOGISTS, SC | PALOS HEIGHTS, IL | First Midwest Bank |
| $150,000–350,000 | DR. VICTOR GRANDINETTI DDS PC | DES PLAINES, IL | First Midwest Bank |
| $150,000–350,000 | DRE, INC. | LIBERTYVILLE, IL | First Midwest Bank |
| $1–2 million | DRIVE CONSTRUCTION, INC. | BRIDGEVIEW, IL | First Midwest Bank |
| $150,000–350,000 | DRS. LEAHY & DISALVO-OST PC | OAK LAWN, IL | First Midwest Bank |
| $350,000–1 million | DRY SYSTEMS TECHNOLOGIES, LLC | WOODRIDGE, IL | First Midwest Bank |
| $2–5 million | DUKANE PRECAST INCORPORATED | NAPERVILLE, IL | First Midwest Bank |
| $350,000–1 million | DUN-RITE TOOL & MACHINE CO | CORTLAND, IL | First Midwest Bank |
| $350,000–1 million | DURAFLEX INC | CARY, IL | First Midwest Bank |
| $350,000–1 million | DYKSTRA CONCRETE | CRESTWOOD, IL | First Midwest Bank |
| $350,000–1 million | DYNAMIC ELECTRIC INC | ALSIP, IL | First Midwest Bank |
| $150,000–350,000 | E & J ENTERPRISE GROUP INC | CHANNAHON, IL | First Midwest Bank |
| $150,000–350,000 | E&G CORPORATION LLC | SAVAGE, MD | First Midwest Bank |
| $350,000–1 million | E.C. MACHINING INC | JUSTICE, IL | First Midwest Bank |
| $150,000–350,000 | E3 ARTISAN | WOODSTOCK, IL | First Midwest Bank |
| $1–2 million | EAGLE CAPITAL GROUP | SCHAUMBURG, IL | First Midwest Bank |
| $350,000–1 million | EAGLE PAINTING & MAINTENANCE COMPANY, INC. | LANSING, IL | First Midwest Bank |
| $2–5 million | EARLY AUTISM SERVICES LLC | LA GRANGE PARK, IL | First Midwest Bank |