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Assembly Biosciences, Inc. (ASMB) institutional ownership

Latest close $25.55 Jul 24, 2026
Market cap$141M 52-week range SectorHealthcare
Funds holding · Q2 2024
1
reported ASMB position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q2 2024
Activity unavailable N/A
0 buyers · 1 sellers

Assembly Biosciences, Inc. (ASMB) price and institutional activity

Dates

Q2 2024

$0 bought by 0 investors
$0 sold by 1 investors
Eversource Wealth Advisors, LLC
Bought Sold Totals per quarter; hover a bar for the names.

Assembly Biosciences, Inc. (ASMB) institutional activity · 1

Investor Type Est. change Change Δ Own Date
Eversource Wealth Advisors, LLC · Exited
Change −664 Δ Own −100.0% Date Q2 2024
Eversource Wealth Advisors, LLC Exited· Q2 2024 −664 −100.0% Q2 2024
Data through Q2 2024 · filed Q2 2024
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Famous investor activity in Assembly Biosciences, Inc. (ASMB)

Assembly Biosciences, Inc. (ASMB) 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
Bjorkquist Jeanette M. · Officer Sell −$674
Price $23.25 Qty −29 Owned 15K Trade date Jun 17, 2026 Filed date Jun 18, 2026
Bjorkquist Jeanette M. Officer Sell $23.25 −29 −$674 15K Jun 17, 2026 Jun 18, 2026
McHutchison John G. · Director Grant (A) 8K
Owned 8K Trade date Jun 4, 2026 Filed date Jun 5, 2026
McHutchison John G. Director Grant (A) 8K 8K Jun 4, 2026 Jun 5, 2026
Mahony Susan · Director Grant (A) 8K
Owned 8K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Mahony Susan Director Grant (A) 8K 8K Jun 4, 2026 Jun 5, 2026
Johnson-Pratt Lisa · Director Grant (A) 8K
Owned 8K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Johnson-Pratt Lisa Director Grant (A) 8K 8K Jun 4, 2026 Jun 5, 2026
Houghton Michael · Director Grant (A) 8K
Owned 8K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Houghton Michael Director Grant (A) 8K 8K Jun 4, 2026 Jun 5, 2026
Consylman Gina · Director Grant (A) 8K
Owned 8K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Consylman Gina Director Grant (A) 8K 8K Jun 4, 2026 Jun 5, 2026
Altig Anthony E. · Director Grant (A) 8K
Owned 8K Trade date Jun 4, 2026 Filed date Jun 5, 2026
Altig Anthony E. Director Grant (A) 8K 8K Jun 4, 2026 Jun 5, 2026
Gilead Sciences, Inc. · 10% Owner Grant (A) $12M
Price $26.50 Qty 472K Owned 5.0M Trade date May 26, 2026 Filed date May 27, 2026
Gilead Sciences, Inc. 10% Owner Grant (A) $26.50 472K $12M 5.0M May 26, 2026 May 27, 2026
Bjorkquist Jeanette M. · Officer 2 operations −$9K
Price $26.65–$27.49 Qty −328 Owned 11K Trade date Mar 30, 2026 Filed date Mar 31, 2026
Bjorkquist Jeanette M. Officer 2 operations $26.65–$27.49 −328 −$9K 11K Mar 30, 2026 Mar 31, 2026
White Nicole S. · Officer 2 operations −$5K
Price $26.65–$27.49 Qty −197 Owned 37K Trade date Mar 30, 2026 Filed date Mar 31, 2026
White Nicole S. Officer 2 operations $26.65–$27.49 −197 −$5K 37K Mar 30, 2026 Mar 31, 2026
Gaggar Anuj · Officer 2 operations 40K
Owned 43K Trade date Mar 29, 2026 Filed date Jun 5, 2026
Gaggar Anuj Officer 2 operations 40K 43K Mar 29, 2026 Jun 5, 2026
White Nicole S. · Officer 2 operations 40K
Owned 48K Trade date Mar 29, 2026 Filed date Jun 5, 2026
White Nicole S. Officer 2 operations 40K 48K Mar 29, 2026 Jun 5, 2026
Bjorkquist Jeanette M. · Officer 2 operations 10K
Owned 15K Trade date Mar 29, 2026 Filed date Jun 5, 2026
Bjorkquist Jeanette M. Officer 2 operations 10K 15K Mar 29, 2026 Jun 5, 2026
Delaney William E. IV · Officer 2 operations 40K
Owned 60K Trade date Mar 29, 2026 Filed date Jun 5, 2026
Delaney William E. IV Officer 2 operations 40K 60K Mar 29, 2026 Jun 5, 2026
Okazaki Jason A. · Director 2 operations 145K
Owned 163K Trade date Mar 29, 2026 Filed date Jun 5, 2026
Okazaki Jason A. Director 2 operations 145K 163K Mar 29, 2026 Jun 5, 2026
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15 of 17 Sign in to continue to older insider transactions.

Assembly Biosciences, Inc. (ASMB) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Gilead Sciences, Inc.
% of shares outstanding 29.0% Filing date Aug 12, 2025
Gilead Sciences, Inc. 29.0% Aug 12, 2025
Gilead Sciences, Inc. 5.0M
% of shares outstanding 25.1% Filing date May 27, 2026
Gilead Sciences, Inc. 5.0M 25.1% May 27, 2026
Schornstein Alexander 728K
% of shares outstanding 10.0% Filing date Dec 23, 2024
Schornstein Alexander 728K 10.0% Dec 23, 2024
Deep Track Capital, LP
% of shares outstanding 6.3% Filing date Feb 14, 2022
Deep Track Capital, LP 6.3% Feb 14, 2022
Paradigm Biocapital Advisors LP 865K
% of shares outstanding 5.4% Filing date May 11, 2026
Paradigm Biocapital Advisors LP 865K 5.4% May 11, 2026
Armistice Capital, LLC 316K
% of shares outstanding 5.0% Filing date Feb 14, 2025
Armistice Capital, LLC 316K 5.0% Feb 14, 2025
BlackRock Inc. 1.9M
% of shares outstanding 4.8% Filing date Jul 12, 2021
BlackRock Inc. 1.9M 4.8% Jul 12, 2021
Satter Muneer A 2.2M
% of shares outstanding 4.7% Filing date Feb 10, 2022
Satter Muneer A 2.2M 4.7% Feb 10, 2022
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Assembly Biosciences, Inc. (ASMB) ownership FAQ

Who owns ASMB?

1 reporting institutions disclosed ASMB position changes in the Q2 2024 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 Q2 2024.

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.