CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q1 2016

Shares 151,300 Value ($000) $7,465 Avg Close $43.78 Range $37.09 - $49.97

Q4 2015

Shares 176,300 Value ($000) $7,343 Avg Close $43.45 Range $39.89 - $48.05

Q3 2015

Shares 176,300 Value ($000) $7,752 Avg Close $49.63 Range $43.00 - $54.31

Q2 2015

Shares 225,900 Value ($000) $12,140 Avg Close $55.82 Range $50.65 - $59.29

Q1 2015

Shares 266,900 Value ($000) $15,155 Avg Close $51.78 Range $44.70 - $58.44

Q4 2014

Shares 216,500 Value ($000) $10,403 Avg Close $48.74 Range $43.05 - $53.84

Q3 2014

Shares 218,700 Value ($000) $11,792 Avg Close $58.81 Range $53.66 - $65.53

Q2 2014

Shares 218,700 Value ($000) $14,051 Avg Close $59.46 Range $52.02 - $64.30

Q1 2014

Shares 218,700 Value ($000) $11,983 Avg Close $54.49 Range $44.95 - $60.47

Q4 2013

Shares 91,700 Value ($000) $5,498 Avg Close $57.66 Range $51.77 - $64.12

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	151,300	$7,465	$43.78	$37.09 - $49.97
Q4 2015	176,300	$7,343	$43.45	$39.89 - $48.05
Q3 2015	176,300	$7,752	$49.63	$43.00 - $54.31
Q2 2015	225,900	$12,140	$55.82	$50.65 - $59.29
Q1 2015	266,900	$15,155	$51.78	$44.70 - $58.44
Q4 2014	216,500	$10,403	$48.74	$43.05 - $53.84
Q3 2014	218,700	$11,792	$58.81	$53.66 - $65.53
Q2 2014	218,700	$14,051	$59.46	$52.02 - $64.30
Q1 2014	218,700	$11,983	$54.49	$44.95 - $60.47
Q4 2013	91,700	$5,498	$57.66	$51.77 - $64.12