Subsidiaries of the Company

Incorporated Under Laws of

Percent Owned by the Company

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Old Second National Bank

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United States

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100% of the common stock

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Old Second Capital Trust II

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State of Delaware

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100% of the common stock

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Old Second Affordable

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Housing Fund, L.L.C.

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State of Illinois

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Owned by Old Second National Bank

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Station I, LLC

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State of Illinois

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Owned by Old Second National Bank

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River Street Advisors, LLC

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State of Illinois

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Owned by Old Second National Bank

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