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Penumbra, Inc. (PEN) institutional ownership

Latest close $317.39 Jul 21, 2026
Market cap$8.9B 52-week range SectorHealthcare
Funds holding · Q1 2026
488
reported PEN position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Net sold $912M
273 buyers · 215 sellers

Penumbra, Inc. (PEN) price and institutional activity

Dates

Q1 2026

$4.2B bought by 273 investors
Hbk Investments L P$553MBalyasny Asset Management L.P.$203M +271 more
$5.2B sold by 215 investors
FMR LLC-$1.6BT. Rowe Price Associates-$543M +213 more
Bought Sold Totals per quarter; hover a bar for the names.

Penumbra, Inc. (PEN) institutional activity · 488

Investor Type Est. change Change Δ Own Date
FMR LLC · Reduced −$1.6B
Change −4.6M Δ Own −90.3% Date Q1 2026
FMR LLC Reduced· Q1 2026 −$1.6B −4.6M −90.3% Q1 2026
Hbk Investments L P · New +$553M
Change +1.6M Date Q1 2026
Hbk Investments L P New· Q1 2026 +$553M +1.6M Q1 2026
T. Rowe Price Associates · Reduced −$543M
Change −1.6M Date Q1 2026
T. Rowe Price Associates Reduced· Q1 2026 −$543M −1.6M Q1 2026
Rtw Investments, LP · Exited −$293M
Change −866K Δ Own −100.0% Date Q1 2026
Rtw Investments, LP Exited· Q1 2026 −$293M −866K −100.0% Q1 2026
Citadel Advisors LLC Reduced· Q1 2026 −$267M −788K −79.5% Q1 2026
Balyasny Asset Management L.P. · Added +$203M
Change +600K Date Q1 2026
Balyasny Asset Management L.P. Added· Q1 2026 +$203M +600K Q1 2026
Artisan Partners Limited Partnership · Exited −$201M
Change −594K Δ Own −100.0% Date Q1 2026
Artisan Partners Limited Partnership Exited· Q1 2026 −$201M −594K −100.0% Q1 2026
Clearbridge Investments, LLC · Reduced −$201M
Change −594K Date Q1 2026
Clearbridge Investments, LLC Reduced· Q1 2026 −$201M −594K Q1 2026
Citigroup Inc · Added +$194M
Change +573K Date Q1 2026
Citigroup Inc Added· Q1 2026 +$194M +573K Q1 2026
Whitebox Advisors LLC · New +$151M
Change +445K Date Q1 2026
Whitebox Advisors LLC New· Q1 2026 +$151M +445K Q1 2026
Exoduspoint Capital Management, LP · Added +$150M
Change +443K Date Q1 2026
Exoduspoint Capital Management, LP Added· Q1 2026 +$150M +443K Q1 2026
AQR Arbitrage LLC · New +$143M
Change +423K Date Q1 2026
AQR Arbitrage LLC New· Q1 2026 +$143M +423K Q1 2026
Millennium Management LLC · Added +$142M
Change +420K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +$142M +420K Q1 2026
Tudor Investment Corp Et Al · New +$139M
Change +411K Date Q1 2026
Tudor Investment Corp Et Al New· Q1 2026 +$139M +411K Q1 2026
UBS Group AG · Added +$139M
Change +410K Date Q1 2026
UBS Group AG Added· Q1 2026 +$139M +410K Q1 2026
Data through Q1 2026 · filed Jun 9, 2026
15 of 488

Famous investor activity in Penumbra, Inc. (PEN)

Penumbra, Inc. (PEN) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Elsesser Adam · Director Gift (G) -77K
Owned 683K Trade date May 19, 2026 Filed date May 21, 2026
Elsesser Adam Director Gift (G) -77K 683K May 19, 2026 May 21, 2026
Grewal Harpreet · Director Sell −$33K
Price $328.22 Qty −100 Owned 9K Trade date Apr 2, 2026 Filed date Apr 6, 2026
Grewal Harpreet Director Sell $328.22 −100 −$33K 9K Apr 2, 2026 Apr 6, 2026
Narayan Shruthi · Officer Tax withholding or exercise payment (F) -$39K
Price $336.18 Qty -117 Owned 31K Trade date Mar 15, 2026 Filed date Mar 17, 2026
Narayan Shruthi Officer Tax withholding or exercise payment (F) $336.18 -117 -$39K 31K Mar 15, 2026 Mar 17, 2026
Roberts Johanna · Officer Tax withholding or exercise payment (F) -$63K
Price $336.18 Qty -186 Owned 67K Trade date Mar 15, 2026 Filed date Mar 17, 2026
Roberts Johanna Officer Tax withholding or exercise payment (F) $336.18 -186 -$63K 67K Mar 15, 2026 Mar 17, 2026
Yuen Maggie · Officer Tax withholding or exercise payment (F) -$63K
Price $336.18 Qty -186 Owned 18K Trade date Mar 15, 2026 Filed date Mar 17, 2026
Yuen Maggie Officer Tax withholding or exercise payment (F) $336.18 -186 -$63K 18K Mar 15, 2026 Mar 17, 2026
Shiu Lambert · Officer Tax withholding or exercise payment (F) -$50K
Price $336.18 Qty -150 Owned 39K Trade date Mar 15, 2026 Filed date Mar 17, 2026
Shiu Lambert Officer Tax withholding or exercise payment (F) $336.18 -150 -$50K 39K Mar 15, 2026 Mar 17, 2026
Yuen Maggie · Officer Sell −$832K
Price $342.30 Qty −2K Owned 18K Trade date Mar 2, 2026 Filed date Mar 4, 2026
Yuen Maggie Officer Sell $342.30 −2K −$832K 18K Mar 2, 2026 Mar 4, 2026
Roberts Johanna · Officer Grant (A) 3K
Owned 67K Trade date Feb 17, 2026 Filed date Feb 18, 2026
Roberts Johanna Officer Grant (A) 3K 67K Feb 17, 2026 Feb 18, 2026
Yuen Maggie · Officer Grant (A) 3K
Owned 21K Trade date Feb 17, 2026 Filed date Feb 18, 2026
Yuen Maggie Officer Grant (A) 3K 21K Feb 17, 2026 Feb 18, 2026
Shiu Lambert · Officer Grant (A) 2K
Owned 39K Trade date Feb 17, 2026 Filed date Feb 18, 2026
Shiu Lambert Officer Grant (A) 2K 39K Feb 17, 2026 Feb 18, 2026
Narayan Shruthi · Officer Grant (A) 3K
Owned 31K Trade date Feb 17, 2026 Filed date Feb 18, 2026
Narayan Shruthi Officer Grant (A) 3K 31K Feb 17, 2026 Feb 18, 2026
Roberts Johanna · Officer Tax withholding or exercise payment (F) -$164K
Price $339.30 Qty -482 Owned 65K Trade date Feb 15, 2026 Filed date Feb 18, 2026
Roberts Johanna Officer Tax withholding or exercise payment (F) $339.30 -482 -$164K 65K Feb 15, 2026 Feb 18, 2026
Yuen Maggie · Officer Tax withholding or exercise payment (F) -$163K
Price $339.30 Qty -481 Owned 18K Trade date Feb 15, 2026 Filed date Feb 18, 2026
Yuen Maggie Officer Tax withholding or exercise payment (F) $339.30 -481 -$163K 18K Feb 15, 2026 Feb 18, 2026
Shiu Lambert · Officer Tax withholding or exercise payment (F) -$140K
Price $339.30 Qty -412 Owned 37K Trade date Feb 15, 2026 Filed date Feb 18, 2026
Shiu Lambert Officer Tax withholding or exercise payment (F) $339.30 -412 -$140K 37K Feb 15, 2026 Feb 18, 2026
Narayan Shruthi · Officer Tax withholding or exercise payment (F) -$239K
Price $339.30 Qty -705 Owned 28K Trade date Feb 15, 2026 Filed date Feb 18, 2026
Narayan Shruthi Officer Tax withholding or exercise payment (F) $339.30 -705 -$239K 28K Feb 15, 2026 Feb 18, 2026
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Penumbra, Inc. (PEN) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
FMR LLC 5.8M
% of shares outstanding 15.0% Filing date Feb 9, 2024
FMR LLC 5.8M 15.0% Feb 9, 2024
BlackRock Inc. 4.0M
% of shares outstanding 10.4% Filing date Jan 24, 2024
BlackRock Inc. 4.0M 10.4% Jan 24, 2024
Vanguard Group Inc 3.7M
% of shares outstanding 9.5% Filing date Feb 13, 2024
Vanguard Group Inc 3.7M 9.5% Feb 13, 2024
T. Rowe Price Associates 2.0M
% of shares outstanding 5.1% Filing date Nov 14, 2024
T. Rowe Price Associates 2.0M 5.1% Nov 14, 2024
Vanguard Capital Management 2.0M
% of shares outstanding 5.1% Filing date Apr 30, 2026
Vanguard Capital Management 2.0M 5.1% Apr 30, 2026
Capital Research Global Investors
% of shares outstanding 0.0% Filing date Nov 12, 2024
Capital Research Global Investors 0.0% Nov 12, 2024
Wellington Management Group LLP
% of shares outstanding 0.0% Filing date Feb 4, 2022
Wellington Management Group LLP 0.0% Feb 4, 2022
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Penumbra, Inc. (PEN) ownership FAQ

Who owns PEN?

488 reporting institutions disclosed PEN position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.