Pulse Biosciences, Inc.
Pulse Biosciences, Inc. (PLSE) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · PLSE · as of Sep 30, 2025
Ownership Breakdown
85
Institutional Holders
▼ 2 vs Q2
$104.04M
Total Inst. Value
▲ $13.73M vs Q2
69.21M
Shares Outstanding
freeFloat 18.45%
5.88M
13F Shares Held
▼ 106,671 vs Q2
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
PLSE largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. surgical & medical instruments & apparatus | 1.31M | 1.94% | 1.94% | $23.15B | Nov 12, 2025 | ▼ 36.4K |
VANGUARD GROUP INC surgical & medical instruments & apparatus | 1.11M | 1.66% | 1.66% | $19.71B | Nov 7, 2025 | ▼ 110.1K |
BANK OF AMERICA CORP /DE/ surgical & medical instruments & apparatus | 805.0K | 1.20% | 1.20% | $14.25B | Feb 3, 2026 | ▲ 21.4K |
GEODE CAPITAL MANAGEMENT, LLC surgical & medical instruments & apparatus | 469.5K | 69.79% | 69.79% | $8.31B | Nov 12, 2025 | ▼ 30.0K |
STATE STREET CORP surgical & medical instruments & apparatus | 421.9K | 62.71% | 62.71% | $7.47B | Nov 14, 2025 | ▲ 2.6K |
GRIFFIN ASSET MANAGEMENT, INC. surgical & medical instruments & apparatus | 227.3K | 33.79% | 33.79% | $4.02B | Oct 16, 2025 | ▼ 2.3K |
NORTHERN TRUST CORP surgical & medical instruments & apparatus | 192.6K | 28.63% | 28.63% | $3.41B | Nov 14, 2025 | ▼ 4.8K |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC surgical & medical instruments & apparatus | 152.7K | 22.69% | 22.69% | $2.70B | Nov 10, 2025 | ▼ 19.7K |
PORTOLAN CAPITAL MANAGEMENT, LLC surgical & medical instruments & apparatus | 102.2K | 15.19% | 15.19% | $1.81B | Nov 13, 2025 | NEW |
UBS GROUP AG surgical & medical instruments & apparatus | 76.9K | 11.42% | 11.42% | $1.36B | Nov 13, 2025 | ▲ 26.7K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
21
Increased
+170.4K shares4
New Positions
first time holders18
Decreased
−321.8K shares0
Sold Out
fully exitedNet shares change (top 50)
151.4K
+170.4K / −321.8K
Net new holders
+7
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
PLSE insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
3
Buy transactions
0
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 |
|---|---|---|---|---|---|---|---|
DUGGAN ROBERT W
| May 11, 2026 | Purchase | 660,233 | $19.69 | $13.00M | 48.37M | Form 4 ↗ |
LAVIOLETTE PAUL A Chief Executive Officer | May 11, 2026 | Purchase | 15,000 | $19.69 | $295.4K | 15.8K | Form 4 ↗ |
LAVIOLETTE PAUL A Chief Executive Officer | May 11, 2026 | Purchase | 15,000 | $19.69 | $295.4K | 15.0K | Form 4 ↗ |
DUGGAN ROBERT W
| May 11, 2026 | Purchase | 660,233 | $19.69 | $13.00M | 48.21M | Form 4 ↗ |
UECKER DARRIN Chief Technology Officer | Mar 23, 2026 | Award | 100,000 | — | — | 100.0K | Form 4 ↗ |
Danahy Kevin Patrick Chief Commercial Officer | Feb 18, 2026 | Sale | 5,000 | $23.64 | $118.2K | 43.3K | Form 4 ↗ |
Danahy Kevin Patrick Chief Commercial Officer | Feb 12, 2026 | Sale | 20,000 | $23.37 | $467.4K | 43.3K | Form 4 ↗ |
Danahy Kevin Patrick Chief Commercial Officer | Feb 13, 2026 | Sale | 20,000 | $23.53 | $470.6K | 43.3K | Form 4 ↗ |
Danahy Kevin Patrick Chief Commercial Officer | Feb 17, 2026 | Sale | 20,000 | $23.63 | $472.6K | 43.3K | Form 4 ↗ |
Danahy Kevin Patrick Chief Commercial Officer | Feb 10, 2026 | Sale | 20,000 | $23.52 | $470.4K | 43.3K | 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
Pulse Biosciences, Inc. (PLSE) is primarily owned by institutional investors, who hold approximately 8.5% of total shares outstanding. Company insiders own approximately 81.55%, while retail and public investors account for the remaining 9.96%.
The largest institutional shareholder of Pulse Biosciences, Inc. is BLACKROCK, INC., holding approximately 1.31 million shares — equal to 1.94% of outstanding shares — as of September 30, 2025.
A total of 85 institutional investors currently hold PLSE stock, with a combined institutional value of approximately $104,037,361 as of the most recent 13F filing period.
Frequently asked questions
PLSE ownershipPulse Biosciences, Inc. (PLSE) is primarily owned by institutional investors, who hold approximately 8.5% of shares. The largest shareholder is BLACKROCK, INC. with a 1.94% stake. Company insiders hold 81.55%. Data sourced from SEC Form 13F as of September 30, 2025.