| $350,000–1 million | WELLS AND WELLS CONSTRUCTION - WAB3356 | Champaign, IL | Busey Bank |
| $1–2 million | WELLS PLUMBING AND HEATING SUPPLIES, INC. | CHICAGO, IL | Busey Bank |
| $350,000–1 million | WELLS PLUMBING AND HEATING SUPPLIES, INC. | Chicago, IL | Busey Bank |
| $1–2 million | WERTZ WELDING & TANK SERVICE, INC. | WOOD RIVER, IL | Busey Bank |
| $150,000–350,000 | WESLEY FOUNDATION - WAB3819 | Urbana, IL | Busey Bank |
| $350,000–1 million | WESTCOAST ELECTRIC SERVICES, INC. | NORTH PORT, FL | Busey Bank |
| $350,000–1 million | WESTCOAST STRUCTURAL LLC - WAB4137 | Fort Myers, FL | Busey Bank |
| $350,000–1 million | WESTCOAST STRUCTURAL, LLC | FORT MYERS, FL | Busey Bank |
| $150,000–350,000 | WHITESIDE & GOLDBERG, LTD. | CHICAGO, IL | Busey Bank |
| $150,000–350,000 | WHITNEY MANAGEMENT CORPORATION | HOUSTON, TX | Busey Bank |
| $350,000–1 million | WHITSON VISION P C - WAB5980 | Indianapolis, IN | Busey Bank |
| $350,000–1 million | WHITSON VISION, P.C. | INDIANAPOLIS, IN | Busey Bank |
| $350,000–1 million | WHOLESOME PRODUCTS, LLC | LEMONT, IL | Busey Bank |
| $150,000–350,000 | WICK CONCRETE INC | TOLONO, IL | Busey Bank |
| $150,000–350,000 | WICK CONCRETE INC - WAB6159 | Tolono, IL | Busey Bank |
| $150,000–350,000 | WIELGUS PRODUCT MODELS INC | Chicago, IL | Busey Bank |
| $150,000–350,000 | WIELGUS PRODUCT MODELS INC. | CHICAGO, IL | Busey Bank |
| $2–5 million | WILLIAMS BROTHERS CONSTRUCTION, INC | PEORIA HEIGHTS, IL | Busey Bank |
| $350,000–1 million | WILROCK LLC - WAB9438 | Fort Myers, FL | Busey Bank |
| $350,000–1 million | WILROCK, LLC | FORT MYERS, FL | Busey Bank |
| $350,000–1 million | WILTSHIRE, WHITLEY, RICHARDSON & ENGLISH, PA | FORT MYERS, FL | Busey Bank |
| $150,000–350,000 | WINDSOR ROAD CHRISTIAN CHURCH | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | WINGLE CONSTRUCTION, INC. | MAHOMET, IL | Busey Bank |
| $1–2 million | WINGREN LANDSCAPE INC - WAC0606 | Downers Grove, IL | Busey Bank |
| $1–2 million | WINGREN LANDSCAPE, INC. | DOWNERS GROVE, IL | Busey Bank |
| $350,000–1 million | WISSEHR ELECTRIC, INC. | BELLEVILLE, IL | Busey Bank |
| $350,000–1 million | WMC INC - WAC1469 | Alsip, IL | Busey Bank |
| $350,000–1 million | WMC, INC | ALSIP, IL | Busey Bank |
| $150,000–350,000 | WOLKEN DENTAL D D S P C - WAC1859 | Saint Louis, MO | Busey Bank |
| $150,000–350,000 | WOLKEN DENTAL, D.D.S., P.C. | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | WOMEN'S CARE CONSULTANTS, LLC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | WOMEN'S CARE SPECIALIST L L C - WAC2016 | Saint Louis, MO | Busey Bank |
| $150,000–350,000 | WOMEN'S CARE SPECIALISTS, L.L.C. | SAINT PETERS, MO | Busey Bank |
| $150,000–350,000 | WOMEN'S HEALTH PRACTICE LLC | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | WOMEN'S SPECIALTY HEALTH CENTERS P.C. | NOBLESVILLE, IN | Busey Bank |
| $150,000–350,000 | WOMENS HEALTH PRACTICE LLC - WAC4879 | Champaign, IL | Busey Bank |
| $2–5 million | WOOD RIBBLE & TWYMAN INC. | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | WOODS COVE ASSISTED LIVING INC - WAC4765 | Front Royal, VA | Busey Bank |
| $150,000–350,000 | WOODS COVE ASSISTED LIVING, INC. | FRONT ROYAL, VA | Busey Bank |
| $150,000–350,000 | WORKGROUP CONNECTIONS INC. | SAINT LOUIS, MO | Busey Bank |
| $350,000–1 million | WORKMAN MANAGEMENT GROUP, LLC | EFFINGHAM, IL | Busey Bank |
| $1–2 million | WORLD'S FARE MANAGEMENT GROUP - WAC2999 | Webster Groves, MO | Busey Bank |
| $350,000–1 million | WORLD'S FARE MANAGEMENT GROUP, LLC | SAINT LOUIS, MO | Busey Bank |
| $150,000–350,000 | WORTHINGTON PJ, INC. | PORT CHARLOTTE, FL | Busey Bank |
| $350,000–1 million | WRIGHT CONSTRUCTION SERVICES INC. | SAINT PETERS, MO | Busey Bank |
| $150,000–350,000 | XCHANGE OF AMERICA INC | STUART, FL | Busey Bank |
| $150,000–350,000 | XCHANGE OF AMERICA INC - XAA0092 | Stuart, FL | Busey Bank |
| $350,000–1 million | XS SUPPLY LLC | SEMINOLE, FL | Busey Bank |
| $150,000–350,000 | YBMC | NORMAL, IL | Busey Bank |
| $150,000–350,000 | YBMC - YAA1126 | Normal, IL | Busey Bank |
| $350,000–1 million | YODER'S EGGS INC - YAA2469 | Sarasota, FL | Busey Bank |
| $150,000–350,000 | YODER'S EGGS, INC. | SARASOTA, FL | Busey Bank |
| $150,000–350,000 | YOERK INC | CHAMPAIGN, IL | Busey Bank |
| $150,000–350,000 | YOUNG MEN'S CHRISTIAN ASSOCIATION OF BLOOMINGTON ILLINOIS | Bloomington, IL | Busey Bank |
| $150,000–350,000 | YOUNG MEN'S CHRISTIAN ASSOCIATION OF BLOOMINGTON, ILLINOIS | BLOOMINGTON, IL | Busey Bank |
| $150,000–350,000 | YWCA MCLEAN COUNTY | BLOOMINGTON, IL | Busey Bank |
| $150,000–350,000 | ZANFEL LABORATORIES, INC. | PEORIA, IL | Busey Bank |
| $1–2 million | ZELLER DIGITAL INNOVATIONS, INC. | NORMAL, IL | Busey Bank |
| $350,000–1 million | ZEP CONSTRUCTION, INC. | FORT MYERS, FL | Busey Bank |
| $150,000–350,000 | ZOE 4 LLC | Saint Louis, MO | Busey Bank |
| $150,000–350,000 | ZOE II LLC - ZAA2233 | Saint Louis, MO | Busey Bank |
| $150,000–350,000 | ZOE V LLC - ZAA2235 | Saint Louis, MO | Busey Bank |