Assembly Biosciences's three largest insider shareholders as of May 04, 2026 are Alexander Schornstein (TenPercentOwner, 728.11K shares), Jason A Okazaki (Ceo And President, 111.92K shares), William E Iv Delaney (Chief Scientific Officer, 45.64K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Alexander Schornstein | - | 728,113 | 0 | 25 Nov, 2024 |
| Jason A Okazaki | Ceo And President | 111,916 | 0 | 31 Mar, 2026 |
| William E Iv Delaney | Chief Scientific Officer | 45,642 | 0 | 31 Mar, 2026 |
| Luisa M Stamm | Chief Medical Officer | 40,315 | 0 | 31 Mar, 2022 |
| Nicole S White | Chief Manufacturing Officer | 37,477 | 0 | 31 Mar, 2026 |
| Anuj Gaggar | Chief Medical Officer | 28,000 | 0 | 31 Mar, 2026 |
| John G Mchutchison | Chief Executive Officer | 18,347 | 0 | 15 Apr, 2025 |
| Jeanette M Bjorkquist | Pfo And Pao | 11,089 | 0 | 31 Mar, 2026 |
| Michael Houghton | - | 0 | 3,202 | 31 Dec, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 29 Mar, 2026 | Jeanette M Bjorkquist | Common Stock | A | 6,500 | $0.00 | 11,417 | D | A |
| 29 Mar, 2026 | William E Iv Delaney | Common Stock | A | 26,000 | $0.00 | 45,642 | D | A |
| 29 Mar, 2026 | Anuj Gaggar | Common Stock | A | 26,000 | $0.00 | 28,000 | D | A |
| 29 Mar, 2026 | Jason A Okazaki | Common Stock | A | 94,250 | $0.00 | 111,916 | D | A |
| 29 Mar, 2026 | Nicole S White | Common Stock | A | 26,000 | $0.00 | 37,674 | D | A |
| 30 Mar, 2026 | Nicole S White | Common Stock | D | 188 | $26.65 | 37,486 | D | S |
| 30 Mar, 2026 | Jeanette M Bjorkquist | Common Stock | D | 312 | $26.65 | 11,105 | D | S |
| 30 Mar, 2026 | Nicole S White | Common Stock | D | 9 | $27.49 | 37,477 | D | S |
| 30 Mar, 2026 | Jeanette M Bjorkquist | Common Stock | D | 16 | $27.49 | 11,089 | D | S |
| 16 Jun, 2025 | Jeanette M Bjorkquist | Common Stock | A | 300 | $0.00 | 5,097 | D | A |
| 16 Jun, 2025 | Jeanette M Bjorkquist | Stock Option (right to buy) | A | 600 | $0.00 | 600 | D | A |
| 05 Jun, 2025 | John G Mchutchison | Stock Option (right to buy) | A | 3,500 | $0.00 | 3,500 | D | A |
| 05 Jun, 2025 | Michael Houghton | Stock Option (right to buy) | A | 3,500 | $0.00 | 3,500 | D | A |
| 05 Jun, 2025 | Anthony E Altig | Stock Option (right to buy) | A | 3,500 | $0.00 | 3,500 | D | A |
| 05 Jun, 2025 | Lisa Johnson-Pratt | Stock Option (right to buy) | A | 3,500 | $0.00 | 3,500 | D | A |
| 31 Mar, 2025 | John G Mchutchison | Common Stock | D | 757 | $9.85 | 18,347 | D | S |
| 29 Mar, 2025 | Anuj Gaggar | Stock Option (right to buy) | A | 24,200 | $0.00 | 24,200 | D | A |
| 29 Mar, 2025 | Jeanette M Bjorkquist | Common Stock | A | 1,655 | $0.00 | 4,797 | D | A |
| 31 Mar, 2025 | Jason A Okazaki | Common Stock | D | 355 | $9.85 | 14,757 | D | S |
| 31 Mar, 2025 | Nicole S White | Common Stock | D | 197 | $9.85 | 11,674 | D | S |