PENUMBRA INC

Ticker: PEN CUSIP: 70975L107 Class: EQTY

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

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

Q1 2019

Shares 7,909 Value ($000) $1,163 Avg Close $142.94 Range $115.55 - $162.50

Q4 2018

Shares 7,994 Value ($000) $977 Avg Close $133.93 Range $110.84 - $160.50

Q3 2018

Shares 6,587 Value ($000) $986 Avg Close $140.07 Range $118.60 - $158.70

Q2 2018

Shares 6,587 Value ($000) $910 Avg Close $142.36 Range $111.15 - $167.35

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	7,909	$1,163	$142.94	$115.55 - $162.50
Q4 2018	7,994	$977	$133.93	$110.84 - $160.50
Q3 2018	6,587	$986	$140.07	$118.60 - $158.70
Q2 2018	6,587	$910	$142.36	$111.15 - $167.35