DORMAN PRODUCTS INC

Ticker: DORM CUSIP: 258278100 Class: EQTY

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2021

Shares 400 Value ($000) $45 Avg Close $108.55 Range $93.23 - $122.96

Q1 2015

Shares 1,200 Value ($000) $60 Avg Close $47.07 Range $43.65 - $51.26

Q3 2014

Shares 1,570 Value ($000) $63 Avg Close $44.64 Range $37.22 - $50.70

Q2 2014

Shares 270 Value ($000) $13 Avg Close $54.56 Range $47.48 - $60.99

Q4 2013

Shares 970 Value ($000) $54 Avg Close $50.26 Range $46.49 - $56.51

Q2 2013

Shares 2,230 Value ($000) $102 Avg Close $41.59 Range $33.63 - $47.21

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	400	$45	$108.55	$93.23 - $122.96
Q1 2015	1,200	$60	$47.07	$43.65 - $51.26
Q3 2014	1,570	$63	$44.64	$37.22 - $50.70
Q2 2014	270	$13	$54.56	$47.48 - $60.99
Q4 2013	970	$54	$50.26	$46.49 - $56.51
Q2 2013	2,230	$102	$41.59	$33.63 - $47.21