DORMAN PRODUCTS INC

Ticker: DORM CUSIP: 258278100 Class: EQTY

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q4 2015

Shares 558,031 Value ($000) $26,490 Avg Close $48.76 Range $45.50 - $53.75

Q3 2015

Shares 605,023 Value ($000) $30,790 Avg Close $50.08 Range $45.14 - $53.69

Q2 2015

Shares 540,552 Value ($000) $25,763 Avg Close $48.72 Range $45.97 - $51.50

Q1 2015

Shares 416,988 Value ($000) $20,745 Avg Close $47.07 Range $43.65 - $51.26

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	558,031	$26,490	$48.76	$45.50 - $53.75
Q3 2015	605,023	$30,790	$50.08	$45.14 - $53.69
Q2 2015	540,552	$25,763	$48.72	$45.97 - $51.50
Q1 2015	416,988	$20,745	$47.07	$43.65 - $51.26