OLD SECOND BANCORP INC ILL

Ticker: OSBC CUSIP: 680277100 Class: Common Stock

BROWN BROTHERS HARRIMAN & CO's Holding History (CIK: 0000014661)

Note: Option positions (PUT/CALL) are excluded.

Q4 2017

Shares 145 Value ($000) $2 Avg Close $12.23 Range $11.19 - $13.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	145	$2	$12.23	$11.19 - $13.71