| $150,000–350,000 | DENTAL 360 PC | Christiansted, VI | Byline Bank |
| $350,000–1 million | DERMATOLOGY ASSOCIATES, LTD. | TINLEY PARK, IL | Byline Bank |
| $350,000–1 million | DERMATOLOGY PARTNERS OF THE NORTH SHORE LLC | Northbrook, IL | Byline Bank |
| $350,000–1 million | DERMATOLOGY PARTNERS OF THE NORTH SHORE, LLC | Northbrook, IL | Byline Bank |
| $150,000–350,000 | DESIGN GROUP THREE LLC | MILWAUKEE, WI | Byline Bank |
| $150,000–350,000 | DIAMOND CARPET SERVICE INC | West Chicago, IL | Byline Bank |
| $150,000–350,000 | DIAMOND CARPET SERVICE INC. | West Chicago, IL | Byline Bank |
| $150,000–350,000 | DINKEL'S BAKERY, INC. | CHICAGO, IL | Byline Bank |
| $1–2 million | DISABILITY MANAGEMENT NETWORK, LTD. | LOMBARD, IL | Byline Bank |
| $1–2 million | DISABILITY MANAGEMENT NETWORK, LTD. | Lombard, IL | Byline Bank |
| $350,000–1 million | DISCO MACHINE & MANUFACTURING INC. | Norridge, IL | Byline Bank |
| $350,000–1 million | DISCO MACHINE & MANUFACTURING, INC. | NORRIDGE, IL | Byline Bank |
| $150,000–350,000 | DOC WEST, LLC | LOMBARD, IL | Byline Bank |
| $350,000–1 million | DOCUMENT PUBLISHING GROUP INC. DBA HEALTHWARE SYSTEMS | Elgin, IL | Byline Bank |
| $350,000–1 million | DOCUMENT PUBLISHING GROUP, INC. DBA HEALTHWARE SYSTEMS | Elgin, IL | Byline Bank |
| $150,000–350,000 | DOPPES, LTD | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | DR GUNS LLC | LAKE ZURICH, IL | Byline Bank |
| $350,000–1 million | DRAKE TRUCK BODIES LLC | Phoenix, AZ | Byline Bank |
| $350,000–1 million | DRAKE TRUCK BODIES, LLC | PHOENIX, AZ | Byline Bank |
| $150,000–350,000 | DRIVE CLEANING INC | Skokie, IL | Byline Bank |
| $150,000–350,000 | DRIVE CLEANING INC | SKOKIE, IL | Byline Bank |
| $350,000–1 million | DUBOIS PAVING COMPANY | East Dundee, IL | Byline Bank |
| $350,000–1 million | DUBOIS PAVING COMPANY | East Dundee, IL | Byline Bank |
| $150,000–350,000 | DUDLEY & LAKE LLC | Libertyville, IL | Byline Bank |
| $150,000–350,000 | DUDLEY & LAKE, LLC | LIBERTYVILLE, IL | Byline Bank |
| $1–2 million | DUNLAY'S MANAGEMENT SERVICES LLC | Chicago, IL | Byline Bank |
| $350,000–1 million | DUNLAY'S MANAGEMENT SERVICES, LLC | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | DUNLAYS ROSCOE LLC | Chicago, IL | Byline Bank |
| $150,000–350,000 | DUNLAYS ROSCOE, LLC | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | DUPAGE P.A.D.S., INC | WHEATON, IL | Byline Bank |
| $150,000–350,000 | DURABILT DYVEX INC. | Broadview, IL | Byline Bank |
| $150,000–350,000 | DURABILT DYVEX, INC. | BROADVIEW, IL | Byline Bank |
| $150,000–350,000 | DURATHERM PROCESSING SYSTEMS, INC. | SAINT CHARLES, IL | Byline Bank |
| $350,000–1 million | DURATRACK INC | Elk Grove, IL | Byline Bank |
| $2–5 million | DYNACOIL, INC. | ZION, IL | Byline Bank |
| $150,000–350,000 | E K INDUSTRIES INCORPORATED | Joliet, IL | Byline Bank |
| $150,000–350,000 | E. FORMELLA & SONS | Countryside, IL | Byline Bank |
| $1–2 million | EAGLE CREEK AVIATION SERVICES INC. | Indianapolis, IN | Byline Bank |
| $1–2 million | EAGLE CREEK AVIATION SERVICES, INC. | INDIANAPOLIS, IN | Byline Bank |
| $350,000–1 million | EAGLE DISTRIBUTORS, INC. | Berkeley, IL | Byline Bank |
| $350,000–1 million | EARTHWISE ENVIRONMENTAL, INC. | WOOD DALE, IL | Byline Bank |
| $150,000–350,000 | EAS GROUP INC. | Wheeling, IL | Byline Bank |
| $150,000–350,000 | EAS GROUP, INC. | WHEELING, IL | Byline Bank |
| $150,000–350,000 | EAZYPOWER CORPORATION | CHICAGO, IL | Byline Bank |
| $1–2 million | EBM INC | Elk Grove Village, IL | Byline Bank |
| $150,000–350,000 | EBM MANAGEMENT CONSULTING, INC | ELK GROVE VILLAGE, IL | Byline Bank |
| $1–2 million | EBM, INC | ELK GROVE VILLAGE, IL | Byline Bank |
| $350,000–1 million | ECLECTIC CULINARY CONCEPTS INC | COTTAGE GROVE, MN | Byline Bank |
| $150,000–350,000 | ECONOMY PALLETS INC | CHICAGO, IL | Byline Bank |
| $350,000–1 million | EDIFY TECHNOLOGIES, INC. | Naperville, IL | Byline Bank |
| $350,000–1 million | EDIFY TECHNOLOGIES, INC. | NAPERVILLE, IL | Byline Bank |
| $350,000–1 million | EDUCATION SERVICES GROUP HOLDINGS, LLC | CINCINNATI, OH | Byline Bank |
| $150,000–350,000 | EGGER ACCOUNTING AND BUSINESS SOLUTIONS, INC. | VILLAGE OF LAKEWOOD, IL | Byline Bank |
| $2–5 million | EIGHTH LIGHT HOLDINGS, INC. | Chicago, IL | Byline Bank |
| $150,000–350,000 | ELAN LANDSCAPE DEVELOPMENT, INC. | LIBERTYVILLE, IL | Byline Bank |
| $150,000–350,000 | ELAN LLC | RIVER FOREST, IL | Byline Bank |
| $1–2 million | ELECTRI-FLEX COMPANY | ROSELLE, IL | Byline Bank |
| $150,000–350,000 | ELEGANT CUISINE INC. | ELK GROVE VILLAGE, IL | Byline Bank |
| $150,000–350,000 | ELEGANTE CUISINE INC. | Elk Grove Village, IL | Byline Bank |
| $150,000–350,000 | ELENCO CARBIDE TOOL CORPORATION | Plymouth, WI | Byline Bank |
| $150,000–350,000 | ELENCO CARBIDE TOOL CORPORATION | PLYMOUTH, WI | Byline Bank |
| $150,000–350,000 | ELEVATED COMMERCIAL CONSTRUCTION, INC. | ARLINGTON HEIGHTS, IL | Byline Bank |
| $2–5 million | ELITE LABOR SERVICES LTD | Chicago, IL | Byline Bank |
| $150,000–350,000 | EMBARC INC. | Chicago, IL | Byline Bank |
| $150,000–350,000 | EMBARC, INC. | Chicago, IL | Byline Bank |
| $350,000–1 million | EMCO ACQUISITION, INC. | ELK GROVE VILLAGE, IL | Byline Bank |
| $150,000–350,000 | EMPIRE PHOTO LLC | MADISON, WI | Byline Bank |
| $350,000–1 million | ENROLLMENT RX LLC | Schiller Park, IL | Byline Bank |
| $350,000–1 million | ENVIRONMENTAL REMEDIATION SERVICES INC | East Syracuse, NY | Byline Bank |
| $350,000–1 million | ENVIRONMENTAL REMEDIATION SERVICES INC | EAST SYRACUSE, NY | Byline Bank |
| $350,000–1 million | ERSI LLC | Schenectady, NY | Byline Bank |
| $350,000–1 million | ERSI, LLC | EAST SYRACUSE, NY | Byline Bank |
| $150,000–350,000 | ESPE MANUFACTURING CO. | SCHILLER PARK, IL | Byline Bank |
| $150,000–350,000 | ESPE MANUFACTURING CO. | Schiller Park, IL | Byline Bank |
| $150,000–350,000 | ESTKAV LLC | SHEBOYGAN, WI | Byline Bank |
| $150,000–350,000 | ESTKAV LLC | Sheboygan, WI | Byline Bank |
| $350,000–1 million | EUROVIEW ENTERPRISES LLC | Elmhurst, IL | Byline Bank |
| $350,000–1 million | EUROVIEW ENTERPRISES LLC | ELMHURST, IL | Byline Bank |
| $350,000–1 million | EVANSTON BUILDERS LUMBER COMPANY, INC. | Evanston, IL | Byline Bank |
| $150,000–350,000 | EVANSTON COMMUNITY FOUNDATION | EVANSTON, IL | Byline Bank |
| $150,000–350,000 | EW & VCNR INC. | Vernon Hills, IL | Byline Bank |
| $150,000–350,000 | EW & VCNR, INC. | VERNON HILLS, IL | Byline Bank |
| $150,000–350,000 | EWING TRUCKING INC | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | EXACT REPLACEMENT PARTS, INC. | SAINT CHARLES, IL | Byline Bank |
| $150,000–350,000 | EXCEL DOWEL & WOOD PRODUCTS, LLC | Itasca, IL | Byline Bank |
| $150,000–350,000 | EXPERT AIR SERVICES LLC | Davie, FL | Byline Bank |
| $150,000–350,000 | EXPERT AIR SERVICES, LLC | NAPLES, FL | Byline Bank |
| $350,000–1 million | EXSEL EXHIBITS LLC | Des Plaines, IL | Byline Bank |
| $350,000–1 million | EXSEL EXHIBITS, LLC | DES PLAINES, IL | Byline Bank |
| $350,000–1 million | EYES ON THE FUTURE, INC. | CHICAGO, IL | Byline Bank |
| $350,000–1 million | FAIRE LABOR, LLC | INDIANAPOLIS, IN | Byline Bank |
| $150,000–350,000 | FAMILIA FRESH MARKET NO 1 INC. | BERWYN, IL | Byline Bank |
| $150,000–350,000 | FAMILY RECIPE LLC | MENOMONEE FALLS, WI | Byline Bank |
| $150,000–350,000 | FAMILY THRIFT STORES INC. | Chicago, IL | Byline Bank |
| $150,000–350,000 | FAMILY THRIFT STORES, INC. | CHICAGO, IL | Byline Bank |
| $150,000–350,000 | FANG INC | PORT CHARLOTTE, FL | Byline Bank |
| $150,000–350,000 | FANG INC | Port Charlotte, FL | Byline Bank |
| $350,000–1 million | FARMERS CO-OPERATIVE OF HANSKA | HANSKA, MN | Byline Bank |
| $150,000–350,000 | FARMERS MARKET | North Lake, IL | Byline Bank |
| $350,000–1 million | FAT ROSIE'S NAPERVILLE LLC | Des Plaines, IL | Byline Bank |