ASMB
Assembly Biosciences, Inc.
NASDAQ · Healthcare · Biotechnology · US
$36.60
+1.30%0
Insider buys (3m)
1
Insider sells (3m)
-$674
Net value (3m)
+58.7%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Jun 18, 2026 | Bjorkquist Jeanette M · officer: PFO and PAO | Sale | 29 | $23 |
| Jun 5, 2026 | Delaney William E IV · officer: Chief Scientific Officer | A-Award | 14,000 | $0.00 |
| Jun 5, 2026 | Okazaki Jason A · director, officer: CEO and President | A-Award | 50,750 | $0.00 |
| Jun 5, 2026 | Bjorkquist Jeanette M · officer: PFO and PAO | A-Award | 3,500 | $0.00 |
| Jun 5, 2026 | ALTIG ANTHONY E · director | A-Award | 8,000 | $24 |
| Jun 5, 2026 | Consylman Gina · director | A-Award | 8,000 | $24 |
| Jun 5, 2026 | Houghton Michael · director | A-Award | 8,000 | $24 |
| Jun 5, 2026 | Johnson-Pratt Lisa · director | A-Award | 8,000 | $24 |
| Jun 5, 2026 | Mahony Susan · director | A-Award | 8,000 | $24 |
| Jun 5, 2026 | McHutchison John G · director | A-Award | 8,000 | $24 |
| Jun 5, 2026 | White Nicole S · officer: Chief Manufacturing Officer | A-Award | 14,000 | $0.00 |
| Jun 5, 2026 | Gaggar Anuj · officer: Chief Medical Officer | A-Award | 14,000 | $0.00 |
| May 27, 2026 | GILEAD SCIENCES, INC. · 10 percent owner | A-Award | 471,698 | $27 |
| Mar 31, 2026 | Bjorkquist Jeanette M · officer: PFO and PAO | Sale | 16 | $27 |
| Mar 31, 2026 | Bjorkquist Jeanette M · officer: PFO and PAO | A-Award | 6,500 | $0.00 |
| Mar 31, 2026 | Bjorkquist Jeanette M · officer: PFO and PAO | Sale | 312 | $27 |
| Mar 31, 2026 | White Nicole S · officer: Chief Manufacturing Officer | A-Award | 26,000 | $0.00 |
| Mar 31, 2026 | White Nicole S · officer: Chief Manufacturing Officer | Sale | 188 | $27 |
| Mar 31, 2026 | White Nicole S · officer: Chief Manufacturing Officer | Sale | 9 | $27 |
| Mar 31, 2026 | Gaggar Anuj · officer: Chief Medical Officer | A-Award | 26,000 | $0.00 |
| Mar 31, 2026 | Delaney William E IV · officer: Chief Scientific Officer | A-Award | 26,000 | $0.00 |
| Mar 31, 2026 | Okazaki Jason A · director, officer: CEO and President | A-Award | 94,250 | $0.00 |
| Oct 3, 2025 | GILEAD SCIENCES, INC. · 10 percent owner | Purchase | 2,295,920 | $0.00 |
| Oct 3, 2025 | GILEAD SCIENCES, INC. · 10 percent owner | Purchase | 1,147,960 | $22 |
| Jun 17, 2025 | Bjorkquist Jeanette M · officer: PFO and PAO | A-Award | 600 | $17 |
| Jun 17, 2025 | Bjorkquist Jeanette M · officer: PFO and PAO | A-Award | 300 | $0.00 |
| Jun 9, 2025 | RINGO WILLIAM R · director | A-Award | 3,500 | $16 |
| Jun 9, 2025 | Johnson-Pratt Lisa · director | A-Award | 3,500 | $16 |
| Jun 9, 2025 | McHutchison John G · director | A-Award | 3,500 | $16 |
| Jun 9, 2025 | Mahony Susan · director | A-Award | 3,500 | $16 |
Institutional positioning
13F filings over the trailing two quarters
New 17Increased 27Reduced 21Sold out 73
| Filer | Action | Shares | Filed |
|---|---|---|---|
| GILEAD SCIENCES, INC. | Unchanged | 4,505,391 | May 8, 2026 |
| FARALLON CAPITAL MANAGEMENT LLC | Unchanged | 1,227,590 | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 1,020,410 | May 15, 2026 |
| COMMODORE CAPITAL LP | Unchanged | 1,000,000 | May 15, 2026 |
| JANUS HENDERSON GROUP PLC | Increased | 849,309 | May 18, 2026 |
| PARADIGM BIOCAPITAL ADVISORS LP | Unchanged | 665,251 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 490,447 | May 15, 2026 |
| PARKMAN HEALTHCARE PARTNERS LLC | Increased | 411,227 | May 15, 2026 |
| POINT72 ASSET MANAGEMENT, L.P. | Reduced | 344,105 | May 15, 2026 |
| BLACKSTONE INC. | Reduced | 296,855 | May 15, 2026 |
| MILLENNIUM MANAGEMENT LLC | Increased | 233,650 | May 15, 2026 |
| BLACKROCK, INC. | Increased | 202,743 | May 13, 2026 |
| STEMPOINT CAPITAL LP | Increased | 185,435 | May 18, 2026 |
| B GROUP, INC. | Unchanged | 175,706 | May 15, 2026 |
| MARSHALL WACE, LLP | Increased | 163,400 | May 15, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jun 18, 2026