TRIMAS CORP

Ticker: TRS CUSIP: 896215209 Class: Common Stock

Praesidium Investment Management Company, LLC's Holding History (CIK: 0001320769)

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

Q1 2015

Shares 1,347,596 Value ($000) $41,492 Avg Close $23.60 Range $21.19 - $25.38

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	1,347,596	$41,492	$23.60	$21.19 - $25.38