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Vigil Neuroscience, Inc. (VIGL) institutional ownership

Market cap$384M SectorHealthcare
Funds holding · Q4 2025
3
reported VIGL position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q4 2025
Activity unavailable N/A
0 buyers · 3 sellers

Vigil Neuroscience, Inc. (VIGL) price and institutional activity

Dates

Q4 2025

$0 bought by 0 investors
$0 sold by 3 investors
Barclays PLCXtx Topco Ltd +1 more
Bought Sold Totals per quarter; hover a bar for the names.

Vigil Neuroscience, Inc. (VIGL) institutional activity · 3

Investor Type Est. change Change Δ Own Date
Barclays PLC · Exited
Change −45K Δ Own −100.0% Date Q4 2025
Barclays PLC Exited· Q4 2025 −45K −100.0% Q4 2025
Xtx Topco Ltd · Exited
Change −26K Δ Own −100.0% Date Q4 2025
Xtx Topco Ltd Exited· Q4 2025 −26K −100.0% Q4 2025
Osaic Holdings, Inc. · Exited
Change −565 Δ Own −100.0% Date Q4 2025
Osaic Holdings, Inc. Exited· Q4 2025 −565 −100.0% Q4 2025
Data through Q4 2025 · filed Mar 19, 2026
3 of 3

Famous investor activity in Vigil Neuroscience, Inc. (VIGL)

Vigil Neuroscience, Inc. (VIGL) 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
Atlas Venture Opportunity Fund I, L.P. · 10% Owner 2 operations -5.8M
Owned 0 Trade date Aug 5, 2025 Filed date Aug 7, 2025
Atlas Venture Opportunity Fund I, L.P. 10% Owner 2 operations -5.8M 0 Aug 5, 2025 Aug 7, 2025
Thistle Mary · Director 5 operations -73K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Thistle Mary Director 5 operations -73K 0 Aug 5, 2025 Aug 5, 2025
Kaufmann Petra · Officer 2 operations -474K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Kaufmann Petra Officer 2 operations -474K 0 Aug 5, 2025 Aug 5, 2025
Budd Haeberlein Samantha L. · Director 5 operations -80K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Budd Haeberlein Samantha L. Director 5 operations -80K 0 Aug 5, 2025 Aug 5, 2025
Ziolkowski Jennifer Lynn · Director, Officer 9 operations -849K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Ziolkowski Jennifer Lynn Director, Officer 9 operations -849K 0 Aug 5, 2025 Aug 5, 2025
Booth Bruce · Director 10 operations -6.0M
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Booth Bruce Director 10 operations -6.0M 0 Aug 5, 2025 Aug 5, 2025
Vitorovic Stefan · Director 4 operations -49K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Vitorovic Stefan Director 4 operations -49K 0 Aug 5, 2025 Aug 5, 2025
Magovcevic-Liebisch Ivana · Director, Officer 9 operations -2.9M
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Magovcevic-Liebisch Ivana Director, Officer 9 operations -2.9M 0 Aug 5, 2025 Aug 5, 2025
Bruhn Suzanne Louise · Director 7 operations -125K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Bruhn Suzanne Louise Director 7 operations -125K 0 Aug 5, 2025 Aug 5, 2025
Gray David L. F. · Officer 3 operations -517K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Gray David L. F. Officer 3 operations -517K 0 Aug 5, 2025 Aug 5, 2025
Blanchard Cheryl R. · Director 9 operations -147K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Blanchard Cheryl R. Director 9 operations -147K 0 Aug 5, 2025 Aug 5, 2025
Koenig Gerhard · Director 8 operations -115K
Owned 0 Trade date Aug 5, 2025 Filed date Aug 5, 2025
Koenig Gerhard Director 8 operations -115K 0 Aug 5, 2025 Aug 5, 2025
12 of 12

Vigil Neuroscience, Inc. (VIGL) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Amgen Inc 3.2M
% of shares outstanding 11.3% Filing date Jan 12, 2022
Amgen Inc 3.2M 11.3% Jan 12, 2022
Glazer Capital, LLC 3.0M
% of shares outstanding 6.5% Filing date Aug 14, 2025
Glazer Capital, LLC 3.0M 6.5% Aug 14, 2025
Invus Public Equities, L.P. 1.8M
% of shares outstanding 4.5% Filing date Feb 12, 2025
Invus Public Equities, L.P. 1.8M 4.5% Feb 12, 2025
Beryl Capital Management LLC 0
% of shares outstanding 0.0% Filing date Nov 14, 2025
Beryl Capital Management LLC 0 0.0% Nov 14, 2025
Biotechnology Value Fund L P 0
% of shares outstanding 0.0% Filing date Aug 14, 2025
Biotechnology Value Fund L P 0 0.0% Aug 14, 2025
5 of 5

Vigil Neuroscience, Inc. (VIGL) ownership FAQ

Who owns VIGL?

3 reporting institutions disclosed VIGL position changes in the Q4 2025 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 Q4 2025.

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.