MERCK & CO INC

Ticker: MRK CUSIP: 58933Y105 Class: COM

DF DENT & CO INC's Holding History (CIK: 0000934999)

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

Q4 2015

Shares 24,387 Value ($000) $1,288 Avg Close $36.77 Range $33.58 - $38.73

Q3 2015

Shares 23,487 Value ($000) $1,160 Avg Close $38.40 Range $31.46 - $41.36

Q2 2015

Shares 22,559 Value ($000) $1,284 Avg Close $40.23 Range $38.42 - $42.17

Q1 2015

Shares 21,125 Value ($000) $1,214 Avg Close $40.30 Range $37.94 - $43.13

Q4 2014

Shares 20,550 Value ($000) $1,167 Avg Close $39.35 Range $35.32 - $41.85

Q3 2014

Shares 19,600 Value ($000) $1,162 Avg Close $39.37 Range $37.12 - $41.03

Q2 2014

Shares 19,753 Value ($000) $1,143 Avg Close $37.96 Range $36.06 - $39.67

Q1 2014

Shares 24,003 Value ($000) $1,363 Avg Close $35.76 Range $32.43 - $37.92

Q4 2013

Shares 24,437 Value ($000) $1,223 Avg Close $31.29 Range $29.09 - $32.94

Q3 2013

Shares 24,587 Value ($000) $1,171 Avg Close $30.97 Range $29.74 - $31.75

Q2 2013

Shares 24,587 Value ($000) $1,142 Avg Close $30.02 Range $28.02 - $32.11

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	24,387	$1,288	$36.77	$33.58 - $38.73
Q3 2015	23,487	$1,160	$38.40	$31.46 - $41.36
Q2 2015	22,559	$1,284	$40.23	$38.42 - $42.17
Q1 2015	21,125	$1,214	$40.30	$37.94 - $43.13
Q4 2014	20,550	$1,167	$39.35	$35.32 - $41.85
Q3 2014	19,600	$1,162	$39.37	$37.12 - $41.03
Q2 2014	19,753	$1,143	$37.96	$36.06 - $39.67
Q1 2014	24,003	$1,363	$35.76	$32.43 - $37.92
Q4 2013	24,437	$1,223	$31.29	$29.09 - $32.94
Q3 2013	24,587	$1,171	$30.97	$29.74 - $31.75
Q2 2013	24,587	$1,142	$30.02	$28.02 - $32.11