Insider Trading › ASMB › Insiders
ASSEMBLY BIOSCIENCES, INC.
ASMB·Nasdaq·
United States·Insider activity
United States·Insider activity$22.95
+0.77 (+3.47%)
Close · Oct 7, 2026 · Close Prices from Tiingo.com
ASMB
Insider purchases and sales on the price
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
ASMBS&P 500 (rebased)
Insider BuyInsider SellForm 144 · planned sale
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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
In the last 180 days, ASMB insiders filed 0 purchases ($0) and 1 sale ($674) on the open market, by 1 insider. Newest filing Jun 18, 2026 (3 months ago).
Net Insider Buying by Quarter
Shares bought (+) or sold (−) on the open market by ASMB insiders · Form 4 · last two years
On Record
$0Purchases · 180 days
$674Sales · 180 days
92Open-market transactions on record
1Insiders filing · 180 days
Purchases (code P) and sales (code S) of ASMB common stock reported on Form 4, with Form 5 annual catch-ups. Grants, option exercises, gifts and tax withholding are not shown. Dollars are shares × the stated price; a price outside anything the stock traded at that day is withheld (n/c).
Insider Transactions
92 on record · newest trade first
AllPurchasesSalesOfficers & directors
| Insider | Type | Shares | Price | Value | Held after | Traded | Filed | |
|---|---|---|---|---|---|---|---|---|
| Bjorkquist Jeanette MPFO and PAO | Sale | −29 | $23.25 | $674 | 14.6Kdirect | Jun 17, 2026 | Jun 18, 2026 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Sale | −16 | $27.49 | $440 | 11.1Kdirect | Mar 30, 2026 | Mar 31, 2026 | Form 4 ↗ |
| Bjorkquist Jeanette MPFO and PAO | Sale | −312 | $26.65 | $8K | 11.1Kdirect | Mar 30, 2026 | Mar 31, 2026 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −9 | $27.49 | $247 | 37.5Kdirect | Mar 30, 2026 | Mar 31, 2026 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −188 | $26.65 | $5K | 37.5Kdirect | Mar 30, 2026 | Mar 31, 2026 | Form 4 ↗ |
| GILEAD SCIENCES, INC.10% owner | Purchase | +2.3M | — | — | 4.5Mdirect | Aug 8, 2025 | Oct 3, 2025 | Form 4 ↗ |
| McHutchison John GDirector | Sale | −757 | $9.85 | $7K | 18.3Kdirect | Mar 31, 2025 | Apr 15, 2025 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −180 | $9.85 | $2K | 4,617direct | Mar 31, 2025 | Apr 1, 2025 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −355 | $9.85 | $3K | 14.8Kdirect | Mar 31, 2025 | Apr 1, 2025 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −197 | $9.85 | $2K | 11.7Kdirect | Mar 31, 2025 | Apr 1, 2025 | Form 4 ↗ |
| Houghton MichaelDirector | Purchase | +3,202 | $15.61 | $50K | 3,202indirect | Dec 30, 2024 | Dec 31, 2024 | Form 4 ↗ |
| GILEAD SCIENCES, INC.10% owner | Purchase | +940.5K | n/c | — | 2.2Mdirect | Dec 19, 2024 | Dec 23, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +5,000 | $14.85 | $74K | 728.1Kdirect | Nov 25, 2024 | Nov 26, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +2,976 | $15.00 | $45K | 723.1Kdirect | Nov 25, 2024 | Nov 26, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +17.0K | $14.87 | $253K | 720.1Kdirect | Nov 22, 2024 | Nov 26, 2024 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −40 | $16.29 | $652 | 11.9Kdirect | Nov 18, 2024 | Nov 19, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +10.0K | $14.58 | $146K | 703.1Kdirect | Oct 8, 2024 | Oct 9, 2024 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −157 | $14.81 | $2K | 11.9Kdirect | Oct 3, 2024 | Oct 4, 2024 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −197 | $14.81 | $3K | 14.9Kdirect | Oct 3, 2024 | Oct 4, 2024 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −785 | $14.23 | $11K | 12.1Kdirect | Aug 2, 2024 | Aug 5, 2024 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −981 | $14.23 | $14K | 15.1Kdirect | Aug 2, 2024 | Aug 5, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +4,438 | $12.52 | $56K | 693.1Kdirect | Jul 5, 2024 | Jul 8, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +4,562 | $12.29 | $56K | 688.7Kdirect | Jul 3, 2024 | Jul 8, 2024 | Form 4 ↗ |
| GILEAD SCIENCES, INC.10% owner | Purchase | +179.5K | — | — | 1.3Mdirect | Jun 17, 2024 | Jun 20, 2024 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −24 | $14.93 | $358 | 3,142direct | May 23, 2024 | May 24, 2024 | Form 4 ↗ |
| McHutchison John GDirector | Sale | −2,117 | $14.93 | $32K | 19.1Kdirect | May 23, 2024 | May 24, 2024 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −549 | $14.93 | $8K | 16.1Kdirect | May 23, 2024 | May 24, 2024 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −172 | $14.93 | $3K | 12.9Kdirect | May 23, 2024 | May 24, 2024 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −1,255 | $12.71 | $16K | 13.0Kdirect | Apr 30, 2024 | May 1, 2024 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −1,569 | $12.71 | $20K | 16.4Kdirect | Apr 30, 2024 | May 1, 2024 | Form 4 ↗ |
| McHutchison John GDirector | Sale | −1,206 | $13.07 | $16K | 21.2Kdirect | Apr 1, 2024 | Apr 2, 2024 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −114 | $13.07 | $1K | 3,166direct | Apr 1, 2024 | Apr 2, 2024 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −197 | $13.07 | $3K | 10.9Kdirect | Apr 1, 2024 | Apr 2, 2024 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −354 | $13.07 | $5K | 13.8Kdirect | Apr 1, 2024 | Apr 2, 2024 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −392 | $12.87 | $5K | 14.2Kdirect | Mar 27, 2024 | Mar 29, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +345.1K | $0.80 | $276K | 8.2Mdirect | Jan 18, 2024 | Jan 19, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +300.0K | $0.78 | $234K | 7.9Mdirect | Jan 17, 2024 | Jan 19, 2024 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +100.0K | $0.67 | $67K | 7.6Mdirect | Nov 21, 2023 | Nov 22, 2023 | Form 4 ↗ |
| Schornstein Alexander10% owner | Purchase | +300.0K | $0.72 | $216K | 7.5Mdirect | Nov 20, 2023 | Nov 22, 2023 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −477 | $0.69 | $329 | 93.8Kdirect | Nov 17, 2023 | Nov 21, 2023 | Form 4 ↗ |
| White Nicole SChief Manufacturing Officer | Sale | −1,891 | $0.80 | $2K | 94.3Kdirect | Oct 3, 2023 | Oct 4, 2023 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −1,891 | $0.80 | $2K | 150.9Kdirect | Oct 3, 2023 | Oct 4, 2023 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −2,363 | $0.80 | $2K | 174.9Kdirect | Oct 3, 2023 | Oct 4, 2023 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −9,461 | $1.09 | $10K | 142.7Kdirect | Aug 2, 2023 | Aug 3, 2023 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −11.8K | $1.09 | $13K | 164.8Kdirect | Aug 2, 2023 | Aug 3, 2023 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −844 | $1.07 | $903 | 26.7Kdirect | Jul 24, 2023 | Jul 25, 2023 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −4,232 | $0.96 | $4K | 112.2Kdirect | May 30, 2023 | May 31, 2023 | Form 4 ↗ |
| McHutchison John GDirector | Sale | −26.0K | $1.04 | $27K | 169.2Kdirect | May 23, 2023 | May 24, 2023 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −274 | $1.04 | $285 | 27.5Kdirect | May 23, 2023 | May 24, 2023 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −6,561 | $1.04 | $7K | 116.4Kdirect | May 23, 2023 | May 24, 2023 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −6,561 | $1.04 | $7K | 126.6Kdirect | May 23, 2023 | May 24, 2023 | Form 4 ↗ |
| McHutchison John GDirector | Sale | −14.9K | $0.82 | $12K | 177.6Kdirect | Mar 30, 2023 | Mar 31, 2023 | Form 4 ↗ |
| Bjorkquist Jeanette MPrincipal Accounting Officer | Sale | −774 | $0.82 | $635 | 23.8Kdirect | Mar 30, 2023 | Mar 31, 2023 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −3,421 | $0.82 | $3K | 85.5Kdirect | Mar 30, 2023 | Mar 31, 2023 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −4,247 | $0.82 | $3K | 98.2Kdirect | Mar 30, 2023 | Mar 31, 2023 | Form 4 ↗ |
| Okazaki Jason ACEO and President · Director | Sale | −4,693 | $1.02 | $5K | 102.4Kdirect | Mar 27, 2023 | Mar 28, 2023 | Form 4 ↗ |
| McHutchison John GChief Executive Officer · Director | Sale | −12.3K | $2.13 | $26K | 192.5Kdirect | Aug 8, 2022 | Aug 10, 2022 | Form 4 ↗ |
| Samar Michael P.Chief Financial Officer | Sale | −2,020 | $2.22 | $4K | 77.2Kdirect | Jul 25, 2022 | Jul 26, 2022 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −4,164 | $1.92 | $8K | 76.4Kdirect | May 31, 2022 | Jun 2, 2022 | Form 4 ↗ |
| Samar Michael P.Chief Financial Officer | Sale | −2,285 | $2.17 | $5K | 76.7Kdirect | Mar 30, 2022 | Mar 31, 2022 | Form 4 ↗ |
| Stamm Luisa MChief Medical Officer | Sale | −1,038 | $2.17 | $2K | 40.3Kdirect | Mar 30, 2022 | Mar 31, 2022 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −1,038 | $2.17 | $2K | 78.1Kdirect | Mar 30, 2022 | Mar 31, 2022 | Form 4 ↗ |
| Okazaki Jason AChief Operating Officer | Sale | −1,269 | $2.17 | $3K | 94.6Kdirect | Mar 30, 2022 | Mar 31, 2022 | Form 4 ↗ |
| McHutchison John GCEO and President · Director | Sale | −4,614 | $2.17 | $10K | 204.8Kdirect | Mar 30, 2022 | Mar 31, 2022 | Form 4 ↗ |
| Okazaki Jason AChief Operating Officer | Sale | −4,617 | $2.24 | $10K | 64.6Kdirect | Mar 28, 2022 | Mar 29, 2022 | Form 4 ↗ |
| McHutchison John GCEO and President · Director | Sale | −12.2K | $3.60 | $44K | 125.7Kdirect | Aug 9, 2021 | Aug 10, 2021 | Form 4 ↗ |
| Delaney William E IVChief Scientific Officer | Sale | −4,129 | $4.03 | $17K | 53.1Kdirect | May 27, 2021 | Jun 1, 2021 | Form 4 ↗ |
| Papkoff Jacqueline SybilSVP-CSO Microbiome | Sale | −1,297 | $6.15 | $8K | 37.4Kdirect | Dec 14, 2020 | Dec 15, 2020 | Form 4 ↗ |
| Stamm Luisa MChief Medical Officer | Sale | −4,397 | $5.10 | $22K | 7,603direct | Nov 9, 2020 | Nov 10, 2020 | Form 4 ↗ |
| McHutchison John GCEO and President · Director | Sale | −756 | $22.50 | $17K | 137.8Kdirect | Aug 7, 2020 | Aug 10, 2020 | Form 4 ↗ |
| McHutchison John GCEO and President · Director | Sale | −11.4K | $21.76 | $248K | 138.6Kdirect | Aug 7, 2020 | Aug 10, 2020 | Form 4 ↗ |
| Colonno Richard JamesEVP & CSO, Virology Ops | Sale | −7,812 | $15.04 | $117K | 137.0Kdirect | Mar 31, 2020 | Mar 31, 2020 | Form 4 ↗ |
| Papkoff Jacqueline SybilSVP-CSO Microbiome | Sale | −1,254 | $14.22 | $18K | 38.7Kdirect | Mar 30, 2020 | Mar 31, 2020 | Form 4 ↗ |
| Papkoff Jacqueline SybilSVP-CSO Microbiome | Sale | −1,460 | $21.00 | $31K | 22.9Kdirect | Dec 13, 2019 | Dec 16, 2019 | Form 4 ↗ |
| Colonno Richard JamesEVP & CSO, Virology Ops | Sale | −33.1K | $25.00 | $827K | 127.8Kdirect | Dec 12, 2019 | Dec 16, 2019 | Form 4 ↗ |
| Lopatin Uri AChief Med. Off., VP Res. Dev. | Sale | −336 | $40.01 | $13K | 613.6Kdirect | Sep 6, 2018 | Sep 7, 2018 | Form 4 ↗ |
| Lopatin Uri AChief Med. Off., VP Res. Dev. | Sale | −15.2K | $40.09 | $610K | 613.9Kdirect | Sep 5, 2018 | Sep 7, 2018 | Form 4 ↗ |
| Small Derek ACEO and President · Director | Purchase | +1,200 | $41.77 | $50K | 669.3Kdirect | Jul 19, 2018 | Jul 20, 2018 | Form 4 ↗ |
| Small Derek ACEO and President · Director | Purchase | +1,200 | $41.19 | $49K | 668.1Kdirect | Jul 19, 2018 | Jul 20, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $38.50 | $39K | 19.5Kdirect | Jul 2, 2018 | Jul 3, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $42.47 | $42K | 19.5Kdirect | Jun 1, 2018 | Jun 1, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $43.06 | $43K | 19.5Kdirect | May 1, 2018 | May 2, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $49.32 | $49K | 19.5Kdirect | Apr 2, 2018 | Apr 2, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $56.37 | $56K | 19.5Kdirect | Mar 1, 2018 | Mar 2, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $46.86 | $47K | 19.5Kdirect | Feb 1, 2018 | Feb 2, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $45.04 | $45K | 19.5Kdirect | Jan 2, 2018 | Jan 3, 2018 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $49.37 | $49K | 19.5Kdirect | Dec 1, 2017 | Dec 4, 2017 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $29.55 | $30K | 19.5Kdirect | Nov 1, 2017 | Nov 3, 2017 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −1,000 | $33.70 | $34K | 19.5Kdirect | Oct 16, 2017 | Oct 17, 2017 | Form 4 ↗ |
| RINGO WILLIAM RDirector | Sale | −3,461 | $22.00 | $76K | 0indirect | May 12, 2017 | May 16, 2017 | Form 4 ↗ |
| Small Derek ACEO and President · Director | Purchase | +1,555 | $5.56 | $9K | 634.4Kdirect | Feb 11, 2016 | Feb 12, 2016 | Form 4 ↗ |
| Small Derek ACEO and President · Director | Purchase | +8,445 | $5.52 | $47K | 632.8Kdirect | Feb 10, 2016 | Feb 12, 2016 | Form 4 ↗ |
Source: SEC EDGAR Form 4 and Form 5 filings, SEC's quarterly bulk dataset through Jun 30, 2026, and KeyVex's half-hourly read of new filings since. Every row links its filing. Amendments are marked. Nothing here is a recommendation. All insider activity, market-wide →