EX-21 3 fbiz20231231exhibit21.htm EX-21
Exhibit 21
Subsidiaries of the Registrant

Subsidiary | State of Incorporation or Organization
First Business Bank | Wisconsin
First Business Specialty Finance, LLC | Wisconsin
Mitchell Street Apartments Investment, LLC | Wisconsin
ABKC Real Estate, LLC | Kansas
FBB Real Estate 2, LLC | Kansas
FBB Tax Credit Investment, LLC | Wisconsin
First Madison Investment Corp. | Nevada