Junior Subordinated Debentures	12 Months Ended
Dec. 31, 2015
Junior Subordinated Debentures.
Junior Subordinated Debentures	Note 10: Junior Subordinated Debentures The Company completed the sale of $27.5 million of cumulative trust preferred securities by its unconsolidated subsidiary, Old Second Capital Trust I in June 2003. An additional $4.1 million of cumulative trust preferred securities were sold in July 2003. The costs associated with the issuance of the cumulative trust preferred securities are being amortized over 30 years. The trust preferred securities may remain outstanding for a 30‑year term but, subject to regulatory approval, can be called in whole or in part by the Company after June 30, 2008 and can be exercised by the Company from time to time thereafter. When not in deferral, distributions on the securities are payable quarterly at an annual rate of 7.80%. The Company issued a new $32.6 million subordinated debenture to Old Second Capital Trust I in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities. The Company sold an additional $25.0 million of cumulative trust preferred securities through a private placement completed by an additional, unconsolidated subsidiary, Old Second Capital Trust II, in April 2007. These trust preferred securities also mature in 30 years, but subject to the aforementioned regulatory approval, can be called in whole or in part on a quarterly basis commencing June 15, 2017. The quarterly cash distributions on the securities are fixed at 6.77% through June 15, 2017 and float at 150 basis points over three-month LIBOR thereafter. The Company issued a new $25.8 million subordinated debenture to the Old Second Capital Trust II in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities. Under the terms of the subordinated debentures issued to each of Old Second Capital Trust I and II, the Company is allowed to defer payments of interest for 20 quarterly periods without default or penalty, but such amounts continue to accrue. Also during a deferral period, the Company generally may not pay cash dividends on or repurchase its common stock or preferred stock, including the Series B Fixed Rate Cumulative Perpetual Preferred Stock (the “Series B Stock”), as discussed in Note 20. In August of 2010, the Company elected to defer regularly scheduled interest payments on the $58.4 million of junior subordinated debentures. Because of the deferral on the subordinated debentures, the trusts deferred regularly scheduled dividends on the trust preferred securities. On April 21, 2014, the Company paid all outstanding interest, which totaled $19.7 million, on the trust preferred securities to the trustees for payment to holders as of the next record date set forth in the indentures and terminated the deferral period. As of December 31, 2015 the Company is current on the payments due on these securities. Both of the debentures issued by the Company are disclosed on the Consolidated Balance Sheet as junior subordinated debentures and the related interest expense for each issuance is included in the Consolidated Statements of Income.

Note 10: Junior Subordinated Debentures

The Company completed the sale of $27.5 million of cumulative trust preferred securities by its unconsolidated subsidiary, Old Second Capital Trust I in June 2003. An additional $4.1 million of cumulative trust preferred securities were sold in July 2003. The costs associated with the issuance of the cumulative trust preferred securities are being amortized over 30 years. The trust preferred securities may remain outstanding for a 30‑year term but, subject to regulatory approval, can be called in whole or in part by the Company after June 30, 2008 and can be exercised by the Company from time to time thereafter. When not in deferral, distributions on the securities are payable quarterly at an annual rate of 7.80%. The Company issued a new $32.6 million subordinated debenture to Old Second Capital Trust I in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities.

The Company sold an additional $25.0 million of cumulative trust preferred securities through a private placement completed by an additional, unconsolidated subsidiary, Old Second Capital Trust II, in April 2007. These trust preferred securities also mature in 30 years, but subject to the aforementioned regulatory approval, can be called in whole or in part on a quarterly basis commencing June 15, 2017. The quarterly cash distributions on the securities are fixed at 6.77% through June 15, 2017 and float at 150 basis points over three-month LIBOR thereafter. The Company issued a new $25.8 million subordinated debenture to the Old Second Capital Trust II in return for the aggregate net proceeds of this trust preferred offering. The interest rate and payment frequency on the debenture are equivalent to the cash distribution basis on the trust preferred securities.

Under the terms of the subordinated debentures issued to each of Old Second Capital Trust I and II, the Company is allowed to defer payments of interest for 20 quarterly periods without default or penalty, but such amounts continue to accrue. Also during a deferral period, the Company generally may not pay cash dividends on or repurchase its common stock or preferred stock, including the Series B Fixed Rate Cumulative Perpetual Preferred Stock (the “Series B Stock”), as discussed in Note 20. In August of 2010, the Company elected to defer regularly scheduled interest payments on the $58.4 million of junior subordinated debentures. Because of the deferral on the subordinated debentures, the trusts deferred regularly scheduled dividends on the trust preferred securities. On April 21, 2014, the Company paid all outstanding interest, which totaled $19.7 million, on the trust preferred securities to the trustees for payment to holders as of the next record date set forth in the indentures and terminated the deferral period. As of December 31, 2015 the Company is current on the payments due on these securities. Both of the debentures issued by the Company are disclosed on the Consolidated Balance Sheet as junior subordinated debentures and the related interest expense for each issuance is included in the Consolidated Statements of Income.