ASSEMBLY BIOSCIENCES, INC.
Total Trades
68
Buys
7
Sells
44
Largest Trade
N/A
Insiders
10
Institutional Funds
42
Inst. Value
$1M+
Activist Filings
19
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Bjorkquist Jeanette M | Principal Accounti… | SELL | <$1K | 774 | $0.82 | Mar 31, 2023 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 3K | $0.82 | Mar 31, 2023 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 4K | $0.82 | Mar 31, 2023 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 5K | $1.02 | Mar 28, 2023 |
| McHutchison John G | CEO | SELL | $15K–$50K | 12K | $2.13 | Aug 10, 2022 |
| Samar Michael P. | CFO | SELL | $1K–$15K | 2K | $2.22 | Jul 26, 2022 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 4K | $1.92 | Jun 2, 2022 |
| Samar Michael P. | CFO | GRANT | N/A | 26K | — | Mar 31, 2022 |
| Samar Michael P. | CFO | SELL | $1K–$15K | 2K | $2.17 | Mar 31, 2022 |
| Stamm Luisa M | Chief Medical Offi… | SELL | $1K–$15K | 1K | $2.17 | Mar 31, 2022 |
| Stamm Luisa M | Chief Medical Offi… | GRANT | N/A | 23K | — | Mar 31, 2022 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 1K | $2.17 | Mar 31, 2022 |
| Delaney William E IV | Chief Scientific O… | GRANT | N/A | 25K | — | Mar 31, 2022 |
| Okazaki Jason A | COO | SELL | $1K–$15K | 1K | $2.17 | Mar 31, 2022 |
| Okazaki Jason A | COO | GRANT | N/A | 31K | — | Mar 31, 2022 |
| McHutchison John G | CEO and President | SELL | $1K–$15K | 5K | $2.17 | Mar 31, 2022 |
| McHutchison John G | CEO and President | GRANT | N/A | 84K | — | Mar 31, 2022 |
| Okazaki Jason A | COO | SELL | $1K–$15K | 5K | $2.24 | Mar 29, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 42 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| GILEAD SCIENCES, INC. | 4.5M | $1M+ | SH |
| RA CAPITAL MANAGEMENT, L.P. | 1.0M | $1M+ | SH |
| Point72 Asset Management, L.P. | 601K | $1M+ | SH |
| FRANKLIN RESOURCES INC | 211K | $1M+ | SH |
| Patient Square Capital LP | 127K | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 108K | $1M+ | SH |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 5K | $1M+ | SH |
| VANGUARD GROUP INC | 67K | $1M+ | SH |
| Schonfeld Strategic Advisors LLC | 54K | $1M+ | SH |
| STATE STREET CORP | 53K | $1M+ | SH |
| JPMORGAN CHASE & CO | 48K | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 38K | $1M+ | SH |
| Palumbo Wealth Management LLC | 37K | $1M+ | SH |
| GOLDMAN SACHS GROUP INC | 35K | $1M+ | SH |
| Informed Momentum Co LLC | 30K | $1M+ | SH |
| Ellsworth Advisors, LLC | 30K | $500K+ | SH |
| FEDERATED HERMES, INC. | 25K | $500K+ | SH |
| JANE STREET GROUP, LLC | 23K | $500K+ | SH |
| Connor, Clark & Lunn Investment Management Ltd. | 21K | $500K+ | SH |
| ADAR1 Capital Management, LLC | 20K | $500K+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
Farallon Capital Partners, L.P.
SC 13G/A · Feb 9, 2026
1.5%
239K shares
SC 13G · Dec 8, 2025
8.2%
1.3M shares
SC 13G · Aug 18, 2025
9.5%
1.5M shares
SC 13G/A · Aug 18, 2025
3.5%
544K shares
Farallon Capital Partners, L.P.
SC 13G · Aug 15, 2025
1.4%
222K shares
SC 13G · Aug 15, 2025
9.9%
1.6M shares
SC 13G/A · Aug 15, 2025
10.0%
290K shares
SC 13G · Aug 12, 2025
4.7%
728K shares
SC 13D/A · Aug 12, 2025
29.0%
4.5M shares
SC 13G/A · Feb 14, 2025
5.0%
316K shares
SC 13D/A · Dec 24, 2024
29.9%
2.2M shares
SC 13G/A · Dec 23, 2024
10.0%
728K shares
SC 13G · Dec 23, 2024
10.0%
728K shares
SC 13G · Nov 14, 2024
5.6%
354K shares
SC 13G/A · Feb 14, 2023
3.8%
1.8M shares
SC 13G/A · Feb 14, 2022
4.2%
2.0M shares
Consonance Capital Management LP
SC 13G/A · Feb 14, 2022
0.0%
0 shares
SC 13G/A · Feb 14, 2022
6.3%
3.0M shares
SC 13G/A · Feb 10, 2022
4.7%
2.2M shares