PENUMBRA INC

Ticker: PEN CUSIP: 70975L107 Class: EQTY

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

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

Q4 2025

Shares 345,974 Value ($000) $107,567 Avg Close $276.19 Range $221.26 - $321.38

Q4 2024

Shares 883,098 Value ($000) $209,718 Avg Close $227.37 Range $186.97 - $259.27

Q3 2024

Shares 981,309 Value ($000) $190,678 Avg Close $188.96 Range $148.00 - $211.19

Q2 2024

Shares 824,979 Value ($000) $148,471 Avg Close $199.64 Range $170.59 - $226.27

Q1 2024

Shares 833,703 Value ($000) $186,066 Avg Close $247.22 Range $217.37 - $277.34

Q4 2023

Shares 743,259 Value ($000) $186,959 Avg Close $221.05 Range $180.93 - $262.77

Q3 2023

Shares 656,964 Value ($000) $158,926 Avg Close $277.67 Range $239.87 - $344.04

Q2 2023

Shares 670,286 Value ($000) $230,619 Avg Close $307.06 Range $266.55 - $348.67

Q1 2023

Shares 940,732 Value ($000) $262,173 Avg Close $255.26 Range $218.55 - $283.42

Q4 2022

Shares 1,188,970 Value ($000) $264,498 Avg Close $195.51 Range $144.76 - $233.26

Q3 2022

Shares 1,048,513 Value ($000) $198,798 Avg Close $160.46 Range $118.65 - $211.48

Q2 2022

Shares 972,675 Value ($000) $121,117 Avg Close $158.67 Range $114.86 - $229.44

Q1 2022

Shares 858,683 Value ($000) $190,739 Avg Close $222.19 Range $186.19 - $287.53

Q4 2021

Shares 1,101,554 Value ($000) $316,498 Avg Close $264.38 Range $235.14 - $290.36

Q3 2021

Shares 681,922 Value ($000) $181,732 Avg Close $268.79 Range $243.79 - $293.19

Q2 2021

Shares 690,700 Value ($000) $189,293 Avg Close $272.91 Range $232.29 - $320.00

Q1 2021

Shares 866,553 Value ($000) $234,472 Avg Close $258.13 Range $171.56 - $314.22

Q4 2020

Shares 1,336,263 Value ($000) $233,846 Avg Close $219.06 Range $163.49 - $277.00

Q3 2020

Shares 1,227,385 Value ($000) $238,579 Avg Close $210.34 Range $178.64 - $241.81

Q2 2020

Shares 1,271,813 Value ($000) $227,426 Avg Close $173.55 Range $149.23 - $193.21

Q1 2020

Shares 1,266,233 Value ($000) $204,281 Avg Close $168.48 Range $121.80 - $194.93

Q4 2019

Shares 1,218,187 Value ($000) $200,112 Avg Close $159.06 Range $130.80 - $178.74

Q3 2019

Shares 1,172,792 Value ($000) $157,729 Avg Close $154.70 Range $130.66 - $185.70

Q2 2019

Shares 958,597 Value ($000) $153,376 Avg Close $144.42 Range $122.40 - $170.00

Q1 2019

Shares 686,813 Value ($000) $100,968 Avg Close $142.94 Range $115.55 - $162.50

Q4 2018

Shares 690,902 Value ($000) $84,428 Avg Close $133.93 Range $110.84 - $160.50

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	345,974	$107,567	$276.19	$221.26 - $321.38
Q4 2024	883,098	$209,718	$227.37	$186.97 - $259.27
Q3 2024	981,309	$190,678	$188.96	$148.00 - $211.19
Q2 2024	824,979	$148,471	$199.64	$170.59 - $226.27
Q1 2024	833,703	$186,066	$247.22	$217.37 - $277.34
Q4 2023	743,259	$186,959	$221.05	$180.93 - $262.77
Q3 2023	656,964	$158,926	$277.67	$239.87 - $344.04
Q2 2023	670,286	$230,619	$307.06	$266.55 - $348.67
Q1 2023	940,732	$262,173	$255.26	$218.55 - $283.42
Q4 2022	1,188,970	$264,498	$195.51	$144.76 - $233.26
Q3 2022	1,048,513	$198,798	$160.46	$118.65 - $211.48
Q2 2022	972,675	$121,117	$158.67	$114.86 - $229.44
Q1 2022	858,683	$190,739	$222.19	$186.19 - $287.53
Q4 2021	1,101,554	$316,498	$264.38	$235.14 - $290.36
Q3 2021	681,922	$181,732	$268.79	$243.79 - $293.19
Q2 2021	690,700	$189,293	$272.91	$232.29 - $320.00
Q1 2021	866,553	$234,472	$258.13	$171.56 - $314.22
Q4 2020	1,336,263	$233,846	$219.06	$163.49 - $277.00
Q3 2020	1,227,385	$238,579	$210.34	$178.64 - $241.81
Q2 2020	1,271,813	$227,426	$173.55	$149.23 - $193.21
Q1 2020	1,266,233	$204,281	$168.48	$121.80 - $194.93
Q4 2019	1,218,187	$200,112	$159.06	$130.80 - $178.74
Q3 2019	1,172,792	$157,729	$154.70	$130.66 - $185.70
Q2 2019	958,597	$153,376	$144.42	$122.40 - $170.00
Q1 2019	686,813	$100,968	$142.94	$115.55 - $162.50
Q4 2018	690,902	$84,428	$133.93	$110.84 - $160.50