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Pulse Biosciences, Inc. (PLSE) institutional ownership

Latest close $31.00 Jul 23, 2026
Market cap$992M 52-week range SectorHealthcare
Funds holding · Q1 2026
92
reported PLSE position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
55 buyers · 37 sellers

Pulse Biosciences, Inc. (PLSE) price and institutional activity

Dates

Q1 2026

$0 bought by 55 investors
Massachusetts Financial Services CoPortolan Capital Management, LLC +53 more
$0 sold by 37 investors
Brooklyn Investment GroupUBS Group AG +35 more
Bought Sold Totals per quarter; hover a bar for the names.

Pulse Biosciences, Inc. (PLSE) institutional activity · 92

Investor Type Est. change Change Δ Own Date
Massachusetts Financial Services Co · New
Change +463K Date Q1 2026
Massachusetts Financial Services Co New· Q1 2026 +463K Q1 2026
Portolan Capital Management, LLC · Added
Change +340K Date Q1 2026
Portolan Capital Management, LLC Added· Q1 2026 +340K Q1 2026
Balyasny Asset Management L.P. · New
Change +265K Date Q1 2026
Balyasny Asset Management L.P. New· Q1 2026 +265K Q1 2026
Lmr Partners LLP · New
Change +213K Date Q1 2026
Lmr Partners LLP New· Q1 2026 +213K Q1 2026
Brooklyn Investment Group · Reduced
Change −120K Date Q1 2026
Brooklyn Investment Group Reduced· Q1 2026 −120K Q1 2026
Citadel Advisors LLC Added· Q1 2026 +101K +242.3% Q1 2026
Wellington Management Group LLP · New
Change +81K Date Q1 2026
Wellington Management Group LLP New· Q1 2026 +81K Q1 2026
Bank of America Corp · Added
Change +66K Date Q1 2026
Bank of America Corp Added· Q1 2026 +66K Q1 2026
Millennium Management LLC · New
Change +56K Date Q1 2026
Millennium Management LLC New· Q1 2026 +56K Q1 2026
Parkman Healthcare Partners LLC · New
Change +50K Date Q1 2026
Parkman Healthcare Partners LLC New· Q1 2026 +50K Q1 2026
UBS Group AG · Reduced
Change −42K Date Q1 2026
UBS Group AG Reduced· Q1 2026 −42K Q1 2026
Formula Growth Ltd · New
Change +30K Date Q1 2026
Formula Growth Ltd New· Q1 2026 +30K Q1 2026
Tudor Investment Corp Et Al · Exited
Change −28K Δ Own −100.0% Date Q1 2026
Tudor Investment Corp Et Al Exited· Q1 2026 −28K −100.0% Q1 2026
Geode · Added
Change +27K Date Q1 2026
Geode Added· Q1 2026 +27K Q1 2026
Tiaa-Cref Individual & Institutional Services, LLC · New
Change +27K Date Q1 2026
Tiaa-Cref Individual & Institutional Services, LLC New· Q1 2026 +27K Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 92

Famous investor activity in Pulse Biosciences, Inc. (PLSE)

Pulse Biosciences, Inc. (PLSE) 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
Zanganeh Mahkam · Director 2 operations 45K
Owned 15K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Zanganeh Mahkam Director 2 operations 45K 15K Jun 11, 2026 Jun 15, 2026
Van Den Broek Richard · Director 2 operations 38K
Owned 8K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Van Den Broek Richard Director 2 operations 38K 8K Jun 11, 2026 Jun 15, 2026
Duggan Robert W. · Director 2 operations 42K
Owned 12K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Duggan Robert W. Director 2 operations 42K 12K Jun 11, 2026 Jun 15, 2026
Soni Manmeet Singh · Director Grant (A) 30K
Owned 30K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Soni Manmeet Singh Director Grant (A) 30K 30K Jun 11, 2026 Jun 15, 2026
Sainz Maria · Director 2 operations 34K
Owned 4K Trade date Jun 11, 2026 Filed date Jun 15, 2026
Sainz Maria Director 2 operations 34K 4K Jun 11, 2026 Jun 15, 2026
Laviolette Paul A. · Director Buy +$295K
Price $19.69 Qty +15K Owned 15K Trade date May 11, 2026 Filed date May 11, 2026
Laviolette Paul A. Director Buy $19.69 +15K +$295K 15K May 11, 2026 May 11, 2026
Duggan Robert W. · Director Buy +$13M
Price $19.69 Qty +660K Owned 48.2M Trade date May 11, 2026 Filed date May 11, 2026
Duggan Robert W. Director Buy $19.69 +660K +$13M 48.2M May 11, 2026 May 11, 2026
Uecker Darrin · Director Grant (A) 100K
Owned 100K Trade date Mar 23, 2026 Filed date Apr 3, 2026
Uecker Darrin Director Grant (A) 100K 100K Mar 23, 2026 Apr 3, 2026
Danahy Kevin Patrick · Officer Sell −$118K
Price $23.64 Qty −5K Owned 43K Trade date Feb 18, 2026 Filed date Feb 23, 2026
Danahy Kevin Patrick Officer Sell $23.64 −5K −$118K 43K Feb 18, 2026 Feb 23, 2026
Danahy Kevin Patrick · Officer 2 operations 0
Price $1.53 Owned 300K Trade date Feb 18, 2026 Filed date Feb 23, 2026
Danahy Kevin Patrick Officer 2 operations $1.53 0 300K Feb 18, 2026 Feb 23, 2026
Danahy Kevin Patrick · Officer Sell −$473K
Price $23.63 Qty −20K Owned 43K Trade date Feb 17, 2026 Filed date Feb 17, 2026
Danahy Kevin Patrick Officer Sell $23.63 −20K −$473K 43K Feb 17, 2026 Feb 17, 2026
Danahy Kevin Patrick · Officer 2 operations 0
Price $1.53 Owned 305K Trade date Feb 17, 2026 Filed date Feb 17, 2026
Danahy Kevin Patrick Officer 2 operations $1.53 0 305K Feb 17, 2026 Feb 17, 2026
Danahy Kevin Patrick · Officer Sell −$471K
Price $23.53 Qty −20K Owned 43K Trade date Feb 13, 2026 Filed date Feb 17, 2026
Danahy Kevin Patrick Officer Sell $23.53 −20K −$471K 43K Feb 13, 2026 Feb 17, 2026
Danahy Kevin Patrick · Officer 2 operations 0
Price $1.53 Owned 325K Trade date Feb 13, 2026 Filed date Feb 17, 2026
Danahy Kevin Patrick Officer 2 operations $1.53 0 325K Feb 13, 2026 Feb 17, 2026
Danahy Kevin Patrick · Officer Sell −$467K
Price $23.37 Qty −20K Owned 43K Trade date Feb 12, 2026 Filed date Feb 17, 2026
Danahy Kevin Patrick Officer Sell $23.37 −20K −$467K 43K Feb 12, 2026 Feb 17, 2026
15 of 45
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Pulse Biosciences, Inc. (PLSE) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Duggan Robert W 48.6M
% of shares outstanding 79.4% Filing date Jul 8, 2024
Duggan Robert W 48.6M 79.4% Jul 8, 2024
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Pulse Biosciences, Inc. (PLSE) ownership FAQ

Who owns PLSE?

92 reporting institutions disclosed PLSE 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.