Penumbra, Inc.
Penumbra, Inc. (PEN) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PEN · as of Mar 31, 2025
Ownership Breakdown
448
Institutional Holders
▲ 63 vs Q4
$9.40B
Total Inst. Value
▲ $1.10B vs Q4
39.33M
Shares Outstanding
freeFloat 97.21%
35.14M
13F Shares Held
▲ 202,717 vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
PEN largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FMR LLC surgical & medical instruments & apparatus | 5.84M | 15.14% | 15.14% | $1.56T | May 12, 2025 | ▲ 21.3K |
BLACKROCK, INC. surgical & medical instruments & apparatus | 4.13M | 10.72% | 10.72% | $1.11T | May 2, 2025 | ▲ 24.7K |
VANGUARD GROUP INC surgical & medical instruments & apparatus | 3.68M | 9.53% | 9.53% | $982.83B | May 9, 2025 | ▲ 24.7K |
PRICE T ROWE ASSOCIATES INC /MD/ surgical & medical instruments & apparatus | 1.21M | 3.13% | 3.13% | $323.15B | May 14, 2025 | ▼ 57.3K |
STATE STREET CORP surgical & medical instruments & apparatus | 1.20M | 3.11% | 3.11% | $320.27B | May 15, 2025 | ▼ 5.6K |
CHAMPLAIN INVESTMENT PARTNERS, LLC surgical & medical instruments & apparatus | 869.9K | 2.26% | 2.26% | $232.63B | May 14, 2025 | ▼ 626.0K |
RTW INVESTMENTS, LP surgical & medical instruments & apparatus | 862.8K | 2.24% | 2.24% | $230.71B | May 15, 2025 | ▲ 320 |
CITADEL ADVISORS LLC surgical & medical instruments & apparatus | 784.3K | 2.03% | 2.03% | $209.73B | May 15, 2025 | ▲ 50.0K |
JPMORGAN CHASE & CO surgical & medical instruments & apparatus | 703.6K | 1.82% | 1.82% | $188.16B | May 12, 2025 | ▲ 572.6K |
BAILLIE GIFFORD & CO surgical & medical instruments & apparatus | 689.0K | 1.79% | 1.79% | $184.24B | May 7, 2025 | ▼ 41.2K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
16
Increased
+1.87M shares4
New Positions
first time holders28
Decreased
−1.66M shares0
Sold Out
fully exitedNet shares change (top 50)
+209.0K
+1.87M / −1.66M
Net new holders
-8
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
PEN insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
0
Buy transactions
2
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Elsesser Adam CEO | May 19, 2026 | Gift | 77,000 | — | — | 683.0K | Form 4 ↗ |
Grewal Harpreet director | Apr 2, 2026 | Sale | 100 | $328.22 | $32.8K | 8.7K | Form 4 ↗ |
Narayan Shruthi President | Mar 15, 2026 | Tax Withhold | 117 | $336.18 | $39.3K | 30.8K | Form 4 ↗ |
Roberts Johanna EVP, Gen. Counsel & Secretary | Mar 15, 2026 | Tax Withhold | 186 | $336.18 | $62.5K | 67.3K | Form 4 ↗ |
Yuen Maggie Chief Financial Officer | Mar 15, 2026 | Tax Withhold | 186 | $336.18 | $62.5K | 18.2K | Form 4 ↗ |
Shiu Lambert Chief Accounting Officer | Mar 15, 2026 | Tax Withhold | 150 | $336.18 | $50.4K | 39.3K | Form 4 ↗ |
Yuen Maggie Chief Financial Officer | Mar 2, 2026 | Sale | 2,432 | $342.30 | $832.5K | 18.4K | Form 4 ↗ |
Grewal Harpreet director | Feb 13, 2026 | Award | 589 | — | — | 8.8K | Form 4 ↗ |
Bose Arani director | Feb 13, 2026 | Award | 589 | — | — | 1.1K | Form 4 ↗ |
Leeds Janet director | Feb 13, 2026 | Award | 589 | — | — | 6.6K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Penumbra, Inc. (PEN) is primarily owned by institutional investors, who hold approximately 89.3% of total shares outstanding. Company insiders own approximately 2.79%, while retail and public investors account for the remaining 7.87%.
The largest institutional shareholder of Penumbra, Inc. is FMR LLC, holding approximately 5.84 million shares — equal to 15.14% of outstanding shares — as of March 31, 2025.
A total of 448 institutional investors currently hold PEN stock, with a combined institutional value of approximately $9.40 billion as of the most recent 13F filing period.
Frequently asked questions
PEN ownershipPenumbra, Inc. (PEN) is primarily owned by institutional investors, who hold approximately 89.3% of shares. The largest shareholder is FMR LLC with a 15.14% stake. Company insiders hold 2.79%. Data sourced from SEC Form 13F as of March 31, 2025.