MCKESSON CORP

Ticker: MCK CUSIP: 58155Q103 Class: COM

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q1 2016

Shares 6,024 Value ($000) $947 Avg Close $149.58 Range $137.18 - $182.09

Q4 2015

Shares 6,024 Value ($000) $1,188 Avg Close $174.49 Range $156.11 - $187.05

Q3 2015

Shares 6,037 Value ($000) $1,117 Avg Close $195.59 Range $147.68 - $218.48

Q2 2015

Shares 6,037 Value ($000) $1,357 Avg Close $213.12 Range $202.27 - $224.48

Q1 2015

Shares 6,452 Value ($000) $1,459 Avg Close $204.26 Range $189.37 - $214.42

Q4 2014

Shares 3,725 Value ($000) $773 Avg Close $186.87 Range $163.92 - $197.33

Q3 2014

Shares 2,220 Value ($000) $432 Avg Close $176.84 Range $170.49 - $183.89

Q2 2014

Shares 2,220 Value ($000) $413 Avg Close $163.23 Range $149.40 - $176.12

Q1 2014

Shares 2,220 Value ($000) $392 Avg Close $160.13 Range $146.04 - $172.44

Q4 2013

Shares 1,970 Value ($000) $318 Avg Close $140.55 Range $117.83 - $152.56

Q3 2013

Shares 1,889 Value ($000) $242 Avg Close $112.21 Range $103.38 - $121.94

Q2 2013

Shares 1,889 Value ($000) $216 Avg Close $101.46 Range $93.55 - $108.71

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2016	6,024	$947	$149.58	$137.18 - $182.09
Q4 2015	6,024	$1,188	$174.49	$156.11 - $187.05
Q3 2015	6,037	$1,117	$195.59	$147.68 - $218.48
Q2 2015	6,037	$1,357	$213.12	$202.27 - $224.48
Q1 2015	6,452	$1,459	$204.26	$189.37 - $214.42
Q4 2014	3,725	$773	$186.87	$163.92 - $197.33
Q3 2014	2,220	$432	$176.84	$170.49 - $183.89
Q2 2014	2,220	$413	$163.23	$149.40 - $176.12
Q1 2014	2,220	$392	$160.13	$146.04 - $172.44
Q4 2013	1,970	$318	$140.55	$117.83 - $152.56
Q3 2013	1,889	$242	$112.21	$103.38 - $121.94
Q2 2013	1,889	$216	$101.46	$93.55 - $108.71