PENUMBRA INC

Ticker: PEN CUSIP: 70975L107 Class: EQTY

Atika Capital Management LLC's Holding History (CIK: 0001599731)

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

Q1 2024

Shares 33,000 Value ($000) $7,365 Avg Close $247.22 Range $217.37 - $277.34

Q4 2023

Shares 33,000 Value ($000) $8,301 Avg Close $221.05 Range $180.93 - $262.77

Q3 2023

Shares 37,500 Value ($000) $9,072 Avg Close $277.67 Range $239.87 - $344.04

Q3 2022

Shares 76,000 Value ($000) $14,409 Avg Close $160.46 Range $118.65 - $211.48

Q1 2019

Shares 24,000 Value ($000) $3,529 Avg Close $142.94 Range $115.55 - $162.50

Q2 2018

Shares 22,500 Value ($000) $3,108 Avg Close $142.36 Range $111.15 - $167.35

Q1 2018

Shares 28,500 Value ($000) $3,296 Avg Close $103.27 Range $82.55 - $127.40

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2024	33,000	$7,365	$247.22	$217.37 - $277.34
Q4 2023	33,000	$8,301	$221.05	$180.93 - $262.77
Q3 2023	37,500	$9,072	$277.67	$239.87 - $344.04
Q3 2022	76,000	$14,409	$160.46	$118.65 - $211.48
Q1 2019	24,000	$3,529	$142.94	$115.55 - $162.50
Q2 2018	22,500	$3,108	$142.36	$111.15 - $167.35
Q1 2018	28,500	$3,296	$103.27	$82.55 - $127.40