CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q4 2021

Shares 20,810 Value ($000) $2,076 Avg Close $105.37 Range $90.25 - $118.89

Q3 2021

Shares 106,890 Value ($000) $11,103 Avg Close $98.39 Range $89.03 - $106.90

Q2 2021

Shares 112,840 Value ($000) $10,510 Avg Close $90.87 Range $83.56 - $96.47

Q1 2021

Shares 119,480 Value ($000) $10,043 Avg Close $84.13 Range $73.69 - $91.94

Q1 2020

Shares 150,464 Value ($000) $7,725 Avg Close $73.03 Range $29.45 - $88.40

Q4 2019

Shares 155,419 Value ($000) $13,327 Avg Close $81.27 Range $71.31 - $88.01

Q3 2019

Shares 176,725 Value ($000) $13,643 Avg Close $73.96 Range $67.83 - $80.06

Q2 2019

Shares 176,565 Value ($000) $12,554 Avg Close $69.62 Range $62.54 - $77.24

Q1 2019

Shares 161,385 Value ($000) $11,544 Avg Close $61.79 Range $48.13 - $72.26

Q4 2018

Shares 129,678 Value ($000) $6,400 Avg Close $62.29 Range $46.21 - $72.46

Q3 2018

Shares 164,973 Value ($000) $11,809 Avg Close $63.60 Range $54.90 - $72.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	20,810	$2,076	$105.37	$90.25 - $118.89
Q3 2021	106,890	$11,103	$98.39	$89.03 - $106.90
Q2 2021	112,840	$10,510	$90.87	$83.56 - $96.47
Q1 2021	119,480	$10,043	$84.13	$73.69 - $91.94
Q1 2020	150,464	$7,725	$73.03	$29.45 - $88.40
Q4 2019	155,419	$13,327	$81.27	$71.31 - $88.01
Q3 2019	176,725	$13,643	$73.96	$67.83 - $80.06
Q2 2019	176,565	$12,554	$69.62	$62.54 - $77.24
Q1 2019	161,385	$11,544	$61.79	$48.13 - $72.26
Q4 2018	129,678	$6,400	$62.29	$46.21 - $72.46
Q3 2018	164,973	$11,809	$63.60	$54.90 - $72.50