PERKINELMER INC

Ticker: RVTY CUSIP: 714046109 Class: EQTY

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q1 2019

Shares 12,746 Value ($000) $1,228 Avg Close $88.58 Range $70.92 - $96.29

Q4 2018

Shares 14,144 Value ($000) $1,111 Avg Close $82.99 Range $70.59 - $96.56

Q3 2018

Shares 12,076 Value ($000) $1,175 Avg Close $84.34 Range $70.59 - $96.01

Q2 2018

Shares 11,311 Value ($000) $828 Avg Close $73.59 Range $69.49 - $78.21

Q1 2018

Shares 12,518 Value ($000) $948 Avg Close $75.69 Range $69.34 - $82.82

Q4 2017

Shares 12,504 Value ($000) $914 Avg Close $70.26 Range $67.56 - $72.59

Q3 2017

Shares 11,114 Value ($000) $767 Avg Close $65.61 Range $61.08 - $68.57

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	12,746	$1,228	$88.58	$70.92 - $96.29
Q4 2018	14,144	$1,111	$82.99	$70.59 - $96.56
Q3 2018	12,076	$1,175	$84.34	$70.59 - $96.01
Q2 2018	11,311	$828	$73.59	$69.49 - $78.21
Q1 2018	12,518	$948	$75.69	$69.34 - $82.82
Q4 2017	12,504	$914	$70.26	$67.56 - $72.59
Q3 2017	11,114	$767	$65.61	$61.08 - $68.57