As of May 30, 2026, Q32 Bio's top three insider holders are Albert Seymour (Chief Scientific Officer, 150.87K shares), Arthur Tzianabos (President Ceo, 128.78K shares), Jodie Pope Morrison (Ceo, 89.10K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| W Bradford Smith | Cfo Treasurer | 14,219 | 0 | 11 Jan, 2023 |
| Arthur Tzianabos | President Ceo | 128,778 | 0 | 15 Feb, 2024 |
| Jodie Pope Morrison | Ceo | 89,104 | 0 | 27 Feb, 2026 |
| Lee Kalowski | Cfo And President | 35,943 | 0 | 27 Feb, 2026 |
| Albert Seymour | Chief Scientific Officer | 150,874 | 0 | 08 Sep, 2023 |
| Timothy P Kelly | Chief Operating Officer | 2,224 | 0 | 12 Jan, 2022 |
| Jason Campagna | Chief Medical Officer | 37,500 | 0 | 26 Feb, 2025 |
| Gabriel Cohn | Chief Medical Officer | 2,629 | 0 | 12 Jan, 2022 |
| Paul Alloway | - | 2,596 | 0 | 23 Apr, 2024 |
| Michael Lee Blum | Chief Commercial Officer | 13,538 | 0 | 11 Jan, 2023 |
| Charles Jr Michaud | - | 927 | 0 | 23 Apr, 2024 |
| Shelia M. Violette | Chief Scientific Officer | 55,569 | 0 | 27 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 24 Feb, 2026 | Lee Kalowski | Common Stock | A | 53,250 | $0.00 | 89,193 | D | A |
| 24 Feb, 2026 | Shelia M. Violette | Common Stock | A | 37,500 | $0.00 | 93,069 | D | A |
| 24 Feb, 2026 | Jodie Pope Morrison | Common Stock | A | 132,000 | $0.00 | 221,104 | D | A |
| 24 Feb, 2026 | Shelia M. Violette | Common Stock | A | 37,500 | $0.00 | 93,069 | D | A |
| 25 Feb, 2026 | Shelia M. Violette | Common Stock | D | 2,815 | $4.51 | 55,569 | D | S |
| 25 Feb, 2026 | Lee Kalowski | Common Stock | D | 3,995 | $4.51 | 35,943 | D | S |
| 25 Feb, 2026 | Shelia M. Violette | Common Stock | D | 2,815 | $4.51 | 55,569 | D | S |
| 25 Feb, 2026 | Jodie Pope Morrison | Common Stock | D | 9,896 | $4.51 | 89,104 | D | S |
| 15 Jan, 2026 | Sven Ante Lundberg | Stock Option (Right to Buy) | A | 20,363 | $2.75 | 20,363 | D | A |
| 15 Jan, 2026 | David S. Grayzel | Stock Option (Right to Buy) | A | 16,363 | $2.75 | 16,363 | D | A |
| 15 Jan, 2026 | Kathleen Laporte | Stock Option (Right to Buy) | A | 23,272 | $2.75 | 23,272 | D | A |
| 02 Dec, 2025 | Lee Kalowski | Common Stock | D | 9,072 | $3.46 | 39,938 | D | S |
| 02 Dec, 2025 | Jodie Pope Morrison | Common Stock | D | 22,506 | $3.46 | 99,000 | D | S |
| 23 Oct, 2025 | Mary Thistle | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |
| 23 Oct, 2025 | Arthur Tzianabos | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |
| 23 Oct, 2025 | Diyong Xu | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |
| 23 Oct, 2025 | Isaac Manke | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |
| 23 Oct, 2025 | Arthur Tzianabos | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |
| 23 Oct, 2025 | Diyong Xu | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |
| 23 Oct, 2025 | David S. Grayzel | Stock Option (Right to Buy) | A | 53,521 | $0.00 | 53,521 | D | A |