CLEAN HARBORS INC

Ticker: CLH CUSIP: 184496107 Class: EQTY

YHB Investment Advisors, Inc.'s Holding History (CIK: 0001469219)

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

Q4 2017
Shares 26,384 Value ($000) $1,430 Avg Close $54.14 Range $51.43 - $58.22
Q3 2017
Shares 25,825 Value ($000) $1,464 Avg Close $54.44 Range $49.63 - $58.28
Q2 2017
Shares 28,726 Value ($000) $1,604 Avg Close $57.50 Range $53.17 - $61.62
Q1 2017
Shares 25,095 Value ($000) $1,458 Avg Close $55.34 Range $52.77 - $59.17
Q4 2016
Shares 23,740 Value ($000) $1,321 Avg Close $50.41 Range $43.03 - $58.23
Q3 2016
Shares 23,715 Value ($000) $1,138 Avg Close $49.57 Range $44.91 - $53.79
Q2 2016
Shares 24,715 Value ($000) $1,288 Avg Close $50.01 Range $46.40 - $54.54
Q1 2016
Shares 25,685 Value ($000) $1,267 Avg Close $43.78 Range $37.09 - $49.97
Q4 2015
Shares 28,720 Value ($000) $1,196 Avg Close $43.45 Range $39.89 - $48.05
Q3 2015
Shares 53,185 Value ($000) $2,339 Avg Close $49.63 Range $43.00 - $54.31
Q2 2015
Shares 61,223 Value ($000) $3,290 Avg Close $55.82 Range $50.65 - $59.29
Q1 2015
Shares 63,233 Value ($000) $3,590 Avg Close $51.78 Range $44.70 - $58.44
Q4 2014
Shares 68,333 Value ($000) $3,283 Avg Close $48.74 Range $43.05 - $53.84
Q3 2014
Shares 74,211 Value ($000) $4,001 Avg Close $58.81 Range $53.66 - $65.53
Q2 2014
Shares 75,116 Value ($000) $4,826 Avg Close $59.46 Range $52.02 - $64.30
Q1 2014
Shares 74,902 Value ($000) $4,104 Avg Close $54.49 Range $44.95 - $60.47
Q4 2013
Shares 73,835 Value ($000) $4,427 Avg Close $57.66 Range $51.77 - $64.12
Q3 2013
Shares 74,883 Value ($000) $4,393 Avg Close $55.80 Range $50.23 - $59.80
Q2 2013
Shares 65,815 Value ($000) $3,326 Avg Close $55.73 Range $50.37 - $61.28