OLD SECOND BANCORP INC — Director's Dealing 2017

May 2, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2017-05-01

Reporting Person: Finn Barry (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-01	Old Second Bancorp, Inc. Common Stock	P	2000	$11.80	Acquired	52886	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Options (Right to buy)	$7.49	2019-02-17	Common Stock (1500)	1500	Direct
Employee Stock Option (Right to buy)	$27.75	2017-12-18	Common Stock (1500)	1500	Direct

Footnotes

F1: Of this total, 42,886 shares are held in Mr. Finn's name in a brokerage account and 10,000 shares are restricted stock units.