OLD SECOND BANCORP INC — Director's Dealing 2011

Mar 9, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2011-02-15

Reporting Person: CHEATHAM J DOUGLAS (Director, CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-15	Old Second Bancorp Inc. Common Stock	A	35330	—	Acquired	67922	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp Inc. Common Stock	16404	Indirect
Old Second Bancorp Inc. Common Stock	4192	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Options	$27.75	2017-12-18	Common stock (15000)	15000	Direct
Employee Stock Options	$29.20	2016-12-19	Common Stock (12000)	12000	Direct
Employee Stock Option	$31.34	2015-12-21	common stock (12000)	12000	Direct
Employee Stock Options	$32.59	2014-12-21	Common Stock (12000)	12000	Direct
Employee Stock Option	$25.08	2013-12-16	Common Stock (12000)	12000	Direct
Employee Stock Option	$18.81	2012-12-17	Common Stock (12000)	12000	Direct
Employee stock option	$14.74	2011-12-19	Common Stock (10666)	10666	Direct

Footnotes

F1: Represents restricted stock units granted under the Old Second Bancorp Inc. Equity Incentive Plan. Such shares vest in 2014.

F2: Shares are restated for a 2 for 1 stock split effected in the form of a stock dividend payable 7-28-04.

F3: Shares are restated for a 4 for 3 stock split effected in the form of a stock dividend payable 6-24-02 AND a 2 for 1 stock split effected in the form of a stock dividend payable 7-28-04.