CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

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

Q3 2023

Shares 6,247 Value ($000) $1,045 Avg Close $168.59 Range $160.37 - $178.33

Q2 2023

Shares 21,956 Value ($000) $3,610 Avg Close $146.18 Range $129.70 - $164.80

Q1 2023

Shares 71,277 Value ($000) $10,161 Avg Close $130.22 Range $110.96 - $144.20

Q3 2014

Shares 17,681 Value ($000) $953 Avg Close $58.81 Range $53.66 - $65.53

Q2 2014

Shares 70,123 Value ($000) $4,505 Avg Close $59.46 Range $52.02 - $64.30

Q1 2014

Shares 51,490 Value ($000) $2,821 Avg Close $54.49 Range $44.95 - $60.47

Q4 2013

Shares 74,241 Value ($000) $4,451 Avg Close $57.66 Range $51.77 - $64.12

Q3 2013

Shares 40,341 Value ($000) $2,366 Avg Close $55.80 Range $50.23 - $59.80

Q2 2013

Shares 67,054 Value ($000) $3,388 Avg Close $55.73 Range $50.37 - $61.28

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	6,247	$1,045	$168.59	$160.37 - $178.33
Q2 2023	21,956	$3,610	$146.18	$129.70 - $164.80
Q1 2023	71,277	$10,161	$130.22	$110.96 - $144.20
Q3 2014	17,681	$953	$58.81	$53.66 - $65.53
Q2 2014	70,123	$4,505	$59.46	$52.02 - $64.30
Q1 2014	51,490	$2,821	$54.49	$44.95 - $60.47
Q4 2013	74,241	$4,451	$57.66	$51.77 - $64.12
Q3 2013	40,341	$2,366	$55.80	$50.23 - $59.80
Q2 2013	67,054	$3,388	$55.73	$50.37 - $61.28