EX-21.1 5 tmb-20241231xex21d1.htm EX-21.1

Exhibit 21.1

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LIST OF SUBSIDIARIES

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Subsidiaries of the Company | ​ | Incorporated Under Laws of | ​ | Percent Owned by the Company
Old Second National Bank | ​ | United States | ​ | 100% of the common stock
Old Second Capital Trust II | ​ | State of Delaware | ​ | 100% of the common stock
Old Second Affordable Housing Fund, L.L.C. | ​ | State of Illinois | ​ | Owned by Old Second National Bank
Station I, LLC | ​ | State of Illinois | ​ | Owned by Old Second National Bank
Station II, LLC | ​ | State of Illinois | ​ | Owned by Old Second National Bank
Station III, LLC | ​ | State of Illinois | ​ | Owned by Old Second National Bank
River Street Advisors, LLC | ​ | State of Illinois | ​ | Owned by Old Second National Bank

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