Stocks › ASMB
ASSEMBLY BIOSCIENCES, INC.
ASMB·Nasdaq·
United States·USD
United States·USD$22.95
+0.77 (+3.47%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
ASMB
ASSEMBLY BIOSCIENCES, INC. · Nasdaq
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ASMBS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of ASMB by members of U.S. Congress · 2 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 Christopher L. JacobsHouse · R · NY |
ASMBASSEMBLY BIOSCIENCES, INC. · Stock |
Sale $1,001 - $15,000 |
Feb 17, 2021 | Jan 4, 2021 | Filing ↗ |
| Christopher L. JacobsHouse · R · NY |
ASMBASSEMBLY BIOSCIENCES, INC. · Stock |
Purchase $1,001 - $15,000 |
Feb 10, 2021 | Dec 28, 2020 | Filing ↗ |
Whale Activity
Position changes in ASMB reported for 2026-06-30 by 9 tracked institutional filers
- Increased7
- New0
- Held0
- Decreased1
- Closed0
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 766.8K | $21.1M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 558.9K | $15.4M | increased |
| Point72 Asset Management, L.P. | 460.6K | $12.7M | increased |
| Seven Fleet Capital Management LP | 433.1K | $11.9M | — |
| MILLENNIUM MANAGEMENT LLC | 298.8K | $8.2M | increased |
| CITADEL ADVISORS LLC | 95.9K | $2.6M | increased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 91.2K | $2.5M | increased |
| RENAISSANCE TECHNOLOGIES LLC | 39.4K | $1.1M | increased |
| TWO SIGMA INVESTMENTS, LP | 17.9K | $491K | decreased |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by ASMB insiders, by quarter · Form 4
Recent Insider Transactions
175 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Bjorkquist Jeanette MPFO and PAO | Sale | −29 | $23.25 | $674 | Jun 17, 2026 | Form 4 ↗ |
| GILEAD SCIENCES, INC.10% owner | Grant / award | +471.7K | $26.50 | $12.5M | May 26, 2026 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Sale | −16 | $27.49 | $440 | Mar 30, 2026 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Sale | −312 | $26.65 | $8K | Mar 30, 2026 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −9 | $27.49 | $247 | Mar 30, 2026 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −188 | $26.65 | $5K | Mar 30, 2026 | Form 4 ↗ |
| Gaggar AnujChief Medical Officer | Grant / award | +14.0K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Grant / award | +14.0K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Grant / award | +3,500 | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Grant / award | +14.0K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Grant / award | +50.8K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Grant / award | +6,500 | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Grant / award | +26.0K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Gaggar AnujChief Medical Officer | Grant / award | +26.0K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Grant / award | +26.0K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Grant / award | +94.3K | $0.00 | $0 | Mar 29, 2026 | Form 4 ↗ |
| GILEAD SCIENCES, INC.10% owner | Purchase | +2.3M | — | — | Aug 8, 2025 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Grant / award | +300 | $0.00 | $0 | Jun 16, 2025 | Form 4 ↗ |
| McHutchison John GDirector | Sale | −757 | $9.85 | $7K | Mar 31, 2025 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −180 | $9.85 | $2K | Mar 31, 2025 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding ASMB · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 413.3K | $11.4M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF iShares Trust | 245.0K | $6.7M | 0.01% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 133.3K | $3.7M | 0.00% | Jun 30, 2026 |
| abrdn Healthcare Investors | 129.7K | $3.6M | 0.26% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund Fidelity Salem Street Trust | 107.4K | $2.7M | 0.01% | Jul 31, 2026 |
| iShares Russell 2000 Value ETF iShares Trust | 89.3K | $2.5M | 0.02% | Jun 30, 2026 |
| abrdn Life Sciences Investors | 77.3K | $2.1M | 0.31% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund Fidelity Concord Street Trust | 58.4K | $1.6M | 0.00% | May 31, 2026 |
| Franklin Biotechnology Discovery Fund Franklin Strategic Series | 41.0K | $1.0M | 0.09% | Jul 31, 2026 |
| iShares Micro-Cap ETF iShares Trust | 33.1K | $911K | 0.06% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list ASMB's shares (CUSIP 045396207), each fund at its latest report since Mar 8, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- Paradigm BioCapital International Fund Ltd.SCHEDULE 13G/A · passive (13G) · 1.4M shares6.9%
Aug 14, 2026 · ↗ - Senai Asefaw, M.D.SCHEDULE 13G/A · passive (13G) · 1.6M shares7.8%
Aug 14, 2026 · ↗ - Paradigm BioCapital Advisors GP LLCSCHEDULE 13G/A · passive (13G) · 1.6M shares7.8%
Aug 14, 2026 · ↗ - Paradigm BioCapital Advisors LPSCHEDULE 13G/A · passive (13G) · 1.6M shares7.8%
Aug 14, 2026 · ↗ - JANUS HENDERSON GROUP Ltd.SCHEDULE 13G/A · passive (13G) · 1.4M shares6.9%
Aug 13, 2026 · ↗ - Farallon Capital F5 Master I, L.P.SCHEDULE 13G/A · passive (13G) · 0 shares0.0%
Aug 4, 2026 · ↗ - Farallon Capital (AM) Investors, L.P.SCHEDULE 13G/A · passive (13G) · 0 shares0.0%
Aug 4, 2026 · ↗ - Farallon Capital Offshore Investors II, L.P.SCHEDULE 13G/A · passive (13G) · 0 shares0.0%
Aug 4, 2026 · ↗ - Four Crossings Institutional Partners V, L.P.SCHEDULE 13G/A · passive (13G) · 0 shares0.0%
Aug 4, 2026 · ↗ - Farallon Capital Institutional Partners III, L.P.SCHEDULE 13G/A · passive (13G) · 0 shares0.0%
Aug 4, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming ASSEMBLY BIOSCIENCES, INC. as client
No lobbying filings found naming ASSEMBLY BIOSCIENCES, INC. as the client.
Government Contracts
Federal awards to ASSEMBLY BIOSCIENCES, INC. · USAspending
No federal contract awards found for ASSEMBLY BIOSCIENCES, INC..
U.S. Patents
Recent USPTO applications naming ASSEMBLY BIOSCIENCES, INC.
No USPTO patent applications found for ASSEMBLY BIOSCIENCES, INC..
Annual Financials
From ASMB's 10-K filings · XBRL
No annual XBRL figures on record for ASMB. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
- 1-for-12Reverse splitFeb 12, 2024
Split dates and ratios from the price history · Close Prices from Tiingo.com
Material Events (8-K)
Corporate events filed with the SEC
- 8-K/A · Items 2.02, 9.01Results of operationsAug 14, 2026
EDGAR ↗ - 8-K · Items 2.01, 9.01Acquisition or dispositionAug 13, 2026
EDGAR ↗ - 8-K · Items 5.02, 5.07, 9.01Officer / director change · Shareholder voteJun 5, 2026
EDGAR ↗ - 8-K · Items 1.01, 8.01, 9.01Material agreement · Other eventsMay 26, 2026
EDGAR ↗ - 8-K · Items 7.01, 8.01, 9.01Reg FD disclosure · Other eventsMay 22, 2026
EDGAR ↗ - 8-K · Items 2.02, 9.01Results of operationsMay 7, 2026
EDGAR ↗
About ASSEMBLY BIOSCIENCES, INC.
From SEC EDGAR company records
Industry (SIC 2834)Pharmaceutical Preparations
SectorHealthcare
HeadquartersSOUTH SAN FRANCISCO, CA
IncorporatedDE
SEC CIK0001426800 ↗
Former namesVENTRUS BIOSCIENCES INC