Assembly Biosciences, Inc. (ASMB)
Assembly Biosciences, Inc. (ASMB) Insider Trading
Directors, officers and holders of more than 10% of ASMB report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 44 most recent of 44 transactions on file: 9 with code P, 8 with code S and 27 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 17, 2026 | Bjorkquist Jeanette M | PFO and PAO | S Sale | 29 | $23.25 | $674 |
| Jun 4, 2026 | McHutchison John G | Director | A Award | 8,000 | Not measured | Not measured |
| Jun 4, 2026 | Johnson-Pratt Lisa | Director | A Award | 8,000 | Not measured | Not measured |
| Jun 4, 2026 | ALTIG ANTHONY E | Director | A Award | 8,000 | Not measured | Not measured |
| Jun 4, 2026 | Consylman Gina | Director | A Award | 8,000 | Not measured | Not measured |
| Jun 4, 2026 | Houghton Michael | Director | A Award | 8,000 | Not measured | Not measured |
| Jun 4, 2026 | Mahony Susan | Director | A Award | 8,000 | Not measured | Not measured |
| May 26, 2026 | GILEAD SCIENCES, INC. | 10% Owner | A Award | 471,698 | $26.50 | $12,499,997 |
| Mar 29, 2026 | Gaggar Anuj | Chief Medical Officer | A Award | 14,000 | Not measured | Not measured |
| Mar 29, 2026 | White Nicole S | Chief Manufacturing Officer | A Award | 14,000 | Not measured | Not measured |
| Mar 29, 2026 | Bjorkquist Jeanette M | PFO and PAO | A Award | 3,500 | Not measured | Not measured |
| Mar 29, 2026 | Delaney William E IV | Chief Scientific Officer | A Award | 14,000 | Not measured | Not measured |
| Mar 29, 2026 | Okazaki Jason A | CEO and President | A Award | 50,750 | Not measured | Not measured |
| Aug 8, 2025 | GILEAD SCIENCES, INC. | 10% Owner | P Purchase | 1,147,960 | Not measured | Not measured |
| Aug 8, 2025 | GILEAD SCIENCES, INC. | 10% Owner | P Purchase | 1,147,960 | Not measured | Not measured |
| Aug 8, 2025 | GILEAD SCIENCES, INC. | 10% Owner | P Purchase | 2,295,920 | Not measured | Not measured |
| Jun 16, 2025 | Bjorkquist Jeanette M | PFO and PAO | A Award | 300 | Not measured | Not measured |
| Jun 16, 2025 | Bjorkquist Jeanette M | PFO and PAO | A Award | 600 | Not measured | Not measured |
| Jun 5, 2025 | Mahony Susan | Director | A Award | 3,500 | Not measured | Not measured |
| Jun 5, 2025 | Johnson-Pratt Lisa | Director | A Award | 3,500 | Not measured | Not measured |
| Jun 5, 2025 | Consylman Gina | Director | A Award | 3,500 | Not measured | Not measured |
| Jun 5, 2025 | McHutchison John G | Director | A Award | 3,500 | Not measured | Not measured |
| Jun 5, 2025 | Houghton Michael | Director | A Award | 3,500 | Not measured | Not measured |
| Jun 5, 2025 | RINGO WILLIAM R | Director | A Award | 3,500 | Not measured | Not measured |
| Jun 5, 2025 | ALTIG ANTHONY E | Director | A Award | 3,500 | Not measured | Not measured |
| Mar 31, 2025 | McHutchison John G | Director | S Sale | 757 | $9.85 | $7,455 |
| Mar 31, 2025 | Bjorkquist Jeanette M | PFO and PAO | S Sale | 180 | $9.85 | $1,773 |
| Mar 31, 2025 | Okazaki Jason A | CEO and President | S Sale | 355 | $9.85 | $3,496 |
| Mar 31, 2025 | White Nicole S | Chief Manufacturing Officer | S Sale | 197 | $9.85 | $1,940 |
| Mar 29, 2025 | Gaggar Anuj | Chief Medical Officer | A Award | 24,200 | Not measured | Not measured |
| Mar 29, 2025 | Bjorkquist Jeanette M | PFO and PAO | A Award | 1,900 | Not measured | Not measured |
| Mar 29, 2025 | White Nicole S | Chief Manufacturing Officer | A Award | 20,400 | Not measured | Not measured |
| Mar 29, 2025 | Okazaki Jason A | CEO and President | A Award | 71,100 | Not measured | Not measured |
| Mar 29, 2025 | Bjorkquist Jeanette M | PFO and PAO | A Award | 1,655 | Not measured | Not measured |
| Mar 29, 2025 | Delaney William E IV | Chief Scientific Officer | A Award | 25,500 | Not measured | Not measured |
| Dec 30, 2024 | Houghton Michael | Director | P Purchase | 3,202 | $15.61 | $49,998 |
| Dec 19, 2024 | GILEAD SCIENCES, INC. | 10% Owner | P Purchase | 940,499 | $21.37 | $20,098,464 |
| Nov 25, 2024 | Schornstein Alexander | 10% Owner | P Purchase | 2,976 | $15.00 | $44,640 |
| Nov 25, 2024 | Schornstein Alexander | 10% Owner | P Purchase | 5,000 | $14.85 | $74,250 |
| Nov 22, 2024 | Schornstein Alexander | 10% Owner | P Purchase | 17,024 | $14.87 | $253,104 |
| Nov 18, 2024 | White Nicole S | Chief Manufacturing Officer | S Sale | 40 | $16.29 | $652 |
| Oct 8, 2024 | Schornstein Alexander | 10% Owner | P Purchase | 10,000 | $14.58 | $145,800 |
| Oct 3, 2024 | Okazaki Jason A | CEO and President | S Sale | 197 | $14.81 | $2,918 |
| Oct 3, 2024 | White Nicole S | Chief Manufacturing Officer | S Sale | 157 | $14.81 | $2,325 |
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.