CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

Stephens Investment Management Group LLC's Holding History (CIK: 0001314440)

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

Q1 2014

Shares 186,079 Value ($000) $10,195 Avg Close $54.49 Range $44.95 - $60.47

Q4 2013

Shares 277,729 Value ($000) $16,653 Avg Close $57.66 Range $51.77 - $64.12

Q3 2013

Shares 270,399 Value ($000) $15,862 Avg Close $55.80 Range $50.23 - $59.80

Q2 2013

Shares 173,314 Value ($000) $8,758 Avg Close $55.73 Range $50.37 - $61.28

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	186,079	$10,195	$54.49	$44.95 - $60.47
Q4 2013	277,729	$16,653	$57.66	$51.77 - $64.12
Q3 2013	270,399	$15,862	$55.80	$50.23 - $59.80
Q2 2013	173,314	$8,758	$55.73	$50.37 - $61.28