| $1–2 million | ANGUIL ENVIRONMENTAL SERVICES INC | Milwaukee, WI | Byline Bank |
| $350,000–1 million | APARTMENT DATA SERVICES, LLC | HOUSTON, TX | Byline Bank |
| $1–2 million | APET, INC. | EAST DUNDEE, IL | Byline Bank |
| $150,000–350,000 | APEX HOME HEALTH CARE INC. | Westmont, IL | Byline Bank |
| $350,000–1 million | APEX HOME HEALTH CARE, INC. | WESTMONT, IL | Byline Bank |
| $350,000–1 million | APEX HOSPICE AND PALLIATIVE CARE INC. | Westmont, IL | Byline Bank |
| $350,000–1 million | APEX HOSPICE AND PALLIATIVE CARE, INC. | WESTMONT, IL | Byline Bank |
| $150,000–350,000 | APEX WAREHOUSE SYSTEMS LLC | Oakbrook Terrace, IL | Byline Bank |
| $150,000–350,000 | APEX WAREHOUSE SYSTEMS, LLC | OAKBROOK TERRACE, IL | Byline Bank |
| $150,000–350,000 | AQUAMIST PLUMBING AND LAW SPRINKLING CO. | Dolton, IL | Byline Bank |
| $150,000–350,000 | AQUAMIST PLUMBING AND LAW SPRINKLING CO. | DOLTON, IL | Byline Bank |
| $150,000–350,000 | AR-EN PARTY PRINTERS INC. | Skokie, IL | Byline Bank |
| $150,000–350,000 | AR-EN PARTY PRINTERS, INC. | SKOKIE, IL | Byline Bank |
| $350,000–1 million | ARC DRILLING LLC | Valley View, OH | Byline Bank |
| $350,000–1 million | ARC DRILLING LLC | CLEVELAND, OH | Byline Bank |
| $350,000–1 million | ARCHER ADVISORS, LLC | CHICAGO, IL | Byline Bank |
| $350,000–1 million | ARCHER SCREW PRODUCTS INC | Franklin Park, IL | Byline Bank |
| $350,000–1 million | ARCHER SCREW PRODUCTS INC | FRANKLIN PARK, IL | Byline Bank |
| $150,000–350,000 | ARCHITERRA INC | Indian Creek, IL | Byline Bank |
| $350,000–1 million | ARCHITERRA, INC | VERNON HILLS, IL | Byline Bank |
| $150,000–350,000 | AREA CONSTRUCTION TRADES, INC. | AURORA, IL | Byline Bank |
| $150,000–350,000 | ARISTO MACHINING AND TECHNICAL SERVICES, LLC | Zion, IL | Byline Bank |
| $150,000–350,000 | ARISTOCRAT PROCESS SERVING LLC | Tampa, FL | Byline Bank |
| $150,000–350,000 | ARISTOCRAT PROCESS SERVING LLC | TAMPA, FL | Byline Bank |
| $150,000–350,000 | ARIZONA CONSTRUCTION & RESTORATION CORPORATION | Phoenix, AZ | Byline Bank |
| $150,000–350,000 | ARIZONA CONSTRUCTION & RESTORATION CORPORATION | PHOENIX, AZ | Byline Bank |
| $150,000–350,000 | ARK LOGISTICS LLC | Gurnee, IL | Byline Bank |
| $150,000–350,000 | ARK LOGISTICS, LLC | GURNEE, IL | Byline Bank |
| $350,000–1 million | ARLINGTON CHARHOUSE INC. | Arlington Heights, IL | Byline Bank |
| $150,000–350,000 | ARLINGTON CHARHOUSE INC. | Arlington Heights, IL | Byline Bank |
| $150,000–350,000 | ARLINGTON STRUCTURAL STEEL AND FABRICATIONS INC. | Crystal Lake, IL | Byline Bank |
| $150,000–350,000 | ARLINGTON STRUCTURAL STEEL AND FABRICATIONS, INC. | ARLINGTON HEIGHTS, IL | Byline Bank |
| $150,000–350,000 | ARMANDO & SONS, INC. | ELGIN, IL | Byline Bank |
| $150,000–350,000 | ARMITAGE KOSTNER LIMITED | Chicago, IL | Byline Bank |
| $150,000–350,000 | ARROW PLUMBING, INC. | LIBERTYVILLE, IL | Byline Bank |
| $350,000–1 million | ARTLIP AND SONS | AURORA, IL | Byline Bank |
| $150,000–350,000 | ASHA DELAWARE LLC. | Chicago, IL | Byline Bank |
| $150,000–350,000 | ASHA DELAWARE, LLC. | Chicago, IL | Byline Bank |
| $350,000–1 million | ASHA SALON AND SPA LLC | Schaumburg, IL | Byline Bank |
| $350,000–1 million | ASHA SALON AND SPA, LLC | Schaumburg, IL | Byline Bank |
| $350,000–1 million | ASHLING PARTNERS, LLC | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | ASPEN LANDSCAPES INC. (OC) AND ALI LLC (EPC) | GRAYSLAKE, IL | Byline Bank |
| $150,000–350,000 | ASPEN LANDSCAPES, INC. (OC) AND ALI LLC (EPC) | GRAYSLAKE, IL | Byline Bank |
| $2–5 million | ASSYRIAN NATIONAL COUNCIL OF ILLINOIS | Chicago, IL | Byline Bank |
| $150,000–350,000 | ATHENIAN ROOM LLC | Chicago, IL | Byline Bank |
| $150,000–350,000 | ATHENS CONSTRUCTION COMPANY INC. | Chicago, IL | Byline Bank |
| $150,000–350,000 | ATHENS CONSTRUCTION COMPANY, INC. | CHICAGO, IL | Byline Bank |
| $2–5 million | ATLAS EXCAVATING INC | WEST LAFAYETTE, IN | Byline Bank |
| $350,000–1 million | ATTUCKS ASSET MANAGEMENT, LLC | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | ATW CORPORATION | MUSKEGO, WI | Byline Bank |
| $150,000–350,000 | ATX CLINICAL TRIALS INC. | AUSTIN, TX | Byline Bank |
| $150,000–350,000 | AURORA RESTAURANT LLC | Aurora, IL | Byline Bank |
| $2–5 million | AUSTIN TYLER CONSTRUCTION, INC | ELWOOD, IL | Byline Bank |
| $350,000–1 million | AUTOMATIC PRECISION, INC. | HARWOOD HEIGHTS, IL | Byline Bank |
| $350,000–1 million | AXIS AUTOMATION, LLC | Hartland, WI | Byline Bank |
| $350,000–1 million | AXIS AUTOMATION, LLC | HARTLAND, WI | Byline Bank |
| $150,000–350,000 | B.C. LANDSCAPE MANSORY, INC. | LAKE BLUFF, IL | Byline Bank |
| $150,000–350,000 | B.G.R. CONSTRUCTION, INC. | WAUCONDA, IL | Byline Bank |
| $150,000–350,000 | B.J. TRAILER AND TRUCK REPAIR, INC. | Chicago, IL | Byline Bank |
| $150,000–350,000 | BACHMAN ENTERPRISES INC. | SKOKIE, IL | Byline Bank |
| $150,000–350,000 | BAG TAVERN LLC | Wilmette, IL | Byline Bank |
| $150,000–350,000 | BAG TAVERN LLC | WILMETTE, IL | Byline Bank |
| $150,000–350,000 | BALMORAL AUTO WERKS, INC. | Chicago, IL | Byline Bank |
| $350,000–1 million | BAN-KOE SYSTEMS, INC. | Minneapolis, MN | Byline Bank |
| $150,000–350,000 | BANDJWET ENTERPRISES INC. DBA BEST | Rolling Meadows, IL | Byline Bank |
| $150,000–350,000 | BANDJWET ENTERPRISES INC. DBA BEST | Rolling Meadows, IL | Byline Bank |
| $150,000–350,000 | BANKCARD ANALYTICS LLC | Richardson, TX | Byline Bank |
| $150,000–350,000 | BANKS OF THE NILE INC. | Milford, MI | Byline Bank |
| $150,000–350,000 | BANKS OF THE NILE INC. | MILFORD, MI | Byline Bank |
| $350,000–1 million | BANNER OPERATINGCO LLC | Lake Forest, IL | Byline Bank |
| $350,000–1 million | BANNER PERSONEL SERVICE, INC | NAPERVILLE, IL | Byline Bank |
| $150,000–350,000 | BARR MECHANICAL SALES, INC. | LAKE FOREST, IL | Byline Bank |
| $150,000–350,000 | BASA'S MARINE INC | BOLINGBROOK, IL | Byline Bank |
| $1–2 million | BASIC CRATING & PACKAGING INC. | ELK GROVE VILLAGE, IL | Byline Bank |
| $350,000–1 million | BASIL'S RESTAURANT INC. | Arlington Heights, IL | Byline Bank |
| $150,000–350,000 | BASIL'S RESTAURANT, INC. | ARLINGTON HEIGHTS, IL | Byline Bank |
| $1–2 million | BATTERY SOLUTIONS LLC | Wixom, MI | Byline Bank |
| $1–2 million | BATTERY SOLUTIONS, LLC | WIXOM, MI | Byline Bank |
| $150,000–350,000 | BAY MARINE OF CHICAGO LLC | Waukegan, IL | Byline Bank |
| $150,000–350,000 | BAY MARINE OF CHICAGO, LLC | WAUKEGAN, IL | Byline Bank |
| $1–2 million | BEARY LANDCAPE MANAGEMENT INC. | Lockport, IL | Byline Bank |
| $150,000–350,000 | BEARY NURSERY, INC. | Lockport, IL | Byline Bank |
| $150,000–350,000 | BECKER BOILER CO., INC. | SAINT FRANCIS, WI | Byline Bank |
| $150,000–350,000 | BECKER WORKS, LTD. | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | BECKER WORKS, LTD. | Chicago, IL | Byline Bank |
| $1–2 million | BEDFORD TRANSPORTATION LLC | Bedford Park, IL | Byline Bank |
| $1–2 million | BEDFORD TRANSPORTATION, LLC | BEDFORD PARK, IL | Byline Bank |
| $1–2 million | BEE LINE SUPPORT INC. | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | BEER CHURCH HOSPITALITY GROUP INC. | New Buffalo, MI | Byline Bank |
| $150,000–350,000 | BEER CHURCH HOSPITALITY GROUP, INC. | NEW BUFFALO, MI | Byline Bank |
| $150,000–350,000 | BELLEN CONTAINER CORPORATION | Elgin, IL | Byline Bank |
| $150,000–350,000 | BELLWETHER SOFTWARE LLC | Louisville, KY | Byline Bank |
| $150,000–350,000 | BENVENUTI AND STEIN INC. | Evanston, IL | Byline Bank |
| $350,000–1 million | BENVENUTI AND STEIN, INC. | EVANSTON, IL | Byline Bank |
| $350,000–1 million | BERNARD FOOD INDUSTRIES INC. | Evanston, IL | Byline Bank |
| $350,000–1 million | BERNARD FOOD INDUSTRIES, INC. | Evanston, IL | Byline Bank |
| $1–2 million | BEST DEDICATED SOLUTIONS, LLC | VERNON HILLS, IL | Byline Bank |
| $350,000–1 million | BEST HAND SUPERIOR HOTEL LAUNDRY SERVICE LLC | Chicago, IL | Byline Bank |
| $350,000–1 million | BEST HAND SUPERIOR HOTEL LAUNDRY SERVICE LLC | Chicago, IL | Byline Bank |
| $150,000–350,000 | BEST INSTITUTIONAL SUPPLY CO. | MAYWOOD, IL | Byline Bank |