X0202 4 2004-12-21 0 0000357173 OLD SECOND BANCORP INC OSBC 0001191051 SKOGLUND WILLIAM B 37 S. RIVER ST. AURORA IL 60506 1 1 0 0 CEO Old Second Bancorp Inc. Common Stock 12516 I 401-K Plan Old Second Bancorp Inc. Common Stock 41443 I Profit Sharing Plan Old Second Bancorp Inc. Common Stock 532 D Employee Stock Option (Right to Buy 32.59 2004-12-21 4 A 0 32000 32.59 A 2005-12-21 2014-12-21 Common Stock 32000 32000 D Employee Stock Option (Right to Buy) 25.07 2004-12-16 2013-12-16 Common Stock 32000 32000 D Employee Stock Option (Right to Buy) 18.80 2003-12-17 2012-12-17 Common Stock 32000 32000 D Employee Stock Option (Right to Buy 14.71 2002-12-18 2011-12-18 Common Stock 32000 32000 D Employee Stock Option (Right to Buy 8.91 2001-12-19 2010-12-19 Common Stock 26666 26666 D Employee Stock Option (Right to Buy 10.45 2000-12-14 2009-12-14 Common Stock 22666 22666 D The option becomes exercisable in 33-1/3% increments on December 21,2005, December 21, 2006 and December 21, 2007 respectively. The option was approved at the Board of Directors' Meeting held December 21, 2004. Restated for 2 for 1 stock split effected in the form of a stock dividend payable 7-28-04. Restated for 4 for 3 stock split effected in the form of a stock dividend payable 6-24-02 and restated for a 2 for 1 stock split effected in the form of a stock dividend payable 7-28-04. /s/ William Skoglund 2004-12-21