ASMB
ASSEMBLY BIOSCIENCES, INC.
Pharmaceutical PreparationsNasdaqNon-accelerated filer<br>Smaller reporting company
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 |
|---|---|---|---|---|---|---|
| McHutchison John G | Director | SELL | $1K–$15K | 757 | $9.85 | Apr 15, 2025 |
| Bjorkquist Jeanette M | Principal Accounti… | SELL | $1K–$15K | 180 | $9.85 | Apr 1, 2025 |
| Bjorkquist Jeanette M | Principal Accounti… | GRANT | N/A | 2K | — | Apr 1, 2025 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 355 | $9.85 | Apr 1, 2025 |
| White Nicole S | Chief Manufacturin… | SELL | $1K–$15K | 197 | $9.85 | Apr 1, 2025 |
| Houghton Michael | Director | BUY | $15K–$50K | 3K | $15.61 | Dec 31, 2024 |
| GILEAD SCIENCES, INC. | 10% Owner | BUY | $1M+ | 940K | $21.37 | Dec 24, 2024 |
| Schornstein Alexander | 10% Owner | BUY | $100K–$500K | 25K | $14.88 | Nov 26, 2024 |
| White Nicole S | Chief Manufacturin… | SELL | <$1K | 40 | $16.29 | Nov 19, 2024 |
| Schornstein Alexander | 10% Owner | BUY | $100K–$500K | 10K | $14.58 | Oct 9, 2024 |
| White Nicole S | Chief Manufacturin… | SELL | $1K–$15K | 157 | $14.81 | Oct 4, 2024 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 197 | $14.81 | Oct 4, 2024 |
| GILEAD SCIENCES, INC. | 10% Owner | BUY | N/A | 180K | — | Jun 21, 2024 |
| Bjorkquist Jeanette M | Principal Accounti… | SELL | <$1K | 24 | $14.93 | May 24, 2024 |
| McHutchison John G | Director | SELL | $15K–$50K | 2K | $14.93 | May 24, 2024 |
| White Nicole S | Chief Manufacturin… | SELL | $1K–$15K | 172 | $14.93 | May 24, 2024 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 549 | $14.93 | May 24, 2024 |
| White Nicole S | Chief Manufacturin… | SELL | $15K–$50K | 1K | $12.71 | May 1, 2024 |
| White Nicole S | Chief Manufacturin… | GRANT | N/A | 3K | — | May 1, 2024 |
| Okazaki Jason A | CEO and President | GRANT | N/A | 4K | — | May 1, 2024 |
| Okazaki Jason A | CEO and President | SELL | $15K–$50K | 2K | $12.71 | May 1, 2024 |
| McHutchison John G | Director | SELL | $15K–$50K | 1K | $13.07 | Apr 2, 2024 |
| Bjorkquist Jeanette M | Principal Accounti… | SELL | $1K–$15K | 114 | $13.07 | Apr 2, 2024 |
| Bjorkquist Jeanette M | Principal Accounti… | GRANT | N/A | 850 | — | Apr 2, 2024 |
| White Nicole S | Chief Manufacturin… | SELL | $1K–$15K | 197 | $13.07 | Apr 2, 2024 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 354 | $13.07 | Apr 2, 2024 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 392 | $12.87 | Mar 29, 2024 |
| Schornstein Alexander | 10% Owner | BUY | $500K+ | 645K | $0.79 | Jan 19, 2024 |
| Schornstein Alexander | 10% Owner | BUY | $100K–$500K | 400K | $0.71 | Nov 22, 2023 |
| White Nicole S | Chief Manufacturin… | SELL | <$1K | 477 | $0.69 | Nov 21, 2023 |
| White Nicole S | Chief Manufacturin… | SELL | $1K–$15K | 2K | $0.80 | Oct 4, 2023 |
| White Nicole S | Chief Manufacturin… | GRANT | N/A | 10K | — | Oct 4, 2023 |
| Delaney William E IV | Chief Scientific O… | GRANT | N/A | 10K | — | Oct 4, 2023 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 2K | $0.80 | Oct 4, 2023 |
| Okazaki Jason A | CEO and President | GRANT | N/A | 13K | — | Oct 4, 2023 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 2K | $0.80 | Oct 4, 2023 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 9K | $1.09 | Aug 3, 2023 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 12K | $1.09 | Aug 3, 2023 |
| Bjorkquist Jeanette M | Principal Accounti… | SELL | <$1K | 844 | $1.07 | Jul 25, 2023 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 4K | $0.96 | May 31, 2023 |
| McHutchison John G | Director | SELL | $15K–$50K | 26K | $1.04 | May 24, 2023 |
| McHutchison John G | Director | GRANT | N/A | 118K | — | May 24, 2023 |
| Bjorkquist Jeanette M | Principal Accounti… | SELL | <$1K | 274 | $1.04 | May 24, 2023 |
| Bjorkquist Jeanette M | Principal Accounti… | GRANT | N/A | 2K | — | May 24, 2023 |
| Delaney William E IV | Chief Scientific O… | SELL | $1K–$15K | 7K | $1.04 | May 24, 2023 |
| Delaney William E IV | Chief Scientific O… | GRANT | N/A | 35K | — | May 24, 2023 |
| Okazaki Jason A | CEO and President | GRANT | N/A | 35K | — | May 24, 2023 |
| Okazaki Jason A | CEO and President | SELL | $1K–$15K | 7K | $1.04 | May 24, 2023 |
| McHutchison John G | Director | SELL | $1K–$15K | 15K | $0.82 | Mar 31, 2023 |
| Bjorkquist Jeanette M | Principal Accounti… | GRANT | N/A | 6K | — | Mar 31, 2023 |
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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