OLD SECOND BANCORP INC — Director's Dealing 2010

Jan 21, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2010-01-19

Reporting Person: Ladowicz John (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-01-19	Old Second Bancorp Inc. Common Stock	A	1200	—	Acquired	2146	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp Inc. Common Stock	267767	Indirect
Old Second Bancorp Inc. Common Stock	21450	Indirect
Old Second Bancorp Inc. Common Stock	21450	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Option (right to buy)	$7.49	2019-02-17	Common stock (1500)	1500	Direct

Footnotes

F1: Does not apply.

F2: Represents restricted stock units granted under the Old Second Bancorp Inc. Equity Incentive Plan. Such shares vest in 2013.

F3: Included in this total are 350 shares in Mr. Ladowicz' name outright and 1,796 shares of restricted stock units.