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
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Old Second Capital Trust II	​	State of Delaware	​	100% of the common stock
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Old Second Affordable	​	​	​	​
Housing Fund, L.L.C.	​	State of Illinois	​	Owned by Old Second National Bank
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Station I, LLC	​	State of Illinois	​	Owned by Old Second National Bank
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River Street Advisors, LLC	​	State of Illinois	​	Owned by Old Second National Bank
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