CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

ACK Asset Management LLC's Holding History (CIK: 0001510940)

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

Q3 2015

Shares 280,000 Value ($000) $12,312 Avg Close $49.63 Range $43.00 - $54.31

Q2 2015

Shares 530,000 Value ($000) $28,482 Avg Close $55.82 Range $50.65 - $59.29

Q1 2015

Shares 425,000 Value ($000) $24,132 Avg Close $51.78 Range $44.70 - $58.44

Q3 2013

Shares 288,698 Value ($000) $16,935 Avg Close $55.80 Range $50.23 - $59.80

Q2 2013

Shares 266,000 Value ($000) $13,441 Avg Close $55.73 Range $50.37 - $61.28

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	280,000	$12,312	$49.63	$43.00 - $54.31
Q2 2015	530,000	$28,482	$55.82	$50.65 - $59.29
Q1 2015	425,000	$24,132	$51.78	$44.70 - $58.44
Q3 2013	288,698	$16,935	$55.80	$50.23 - $59.80
Q2 2013	266,000	$13,441	$55.73	$50.37 - $61.28