| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Kalowski Lee | CFO and President | Q32 BIO INC., 830 WINTER STREET, WALTHAM | /s/ Eric Bell, Attorney-in-Fact | 04 Dec 2025 | 0001618273 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | QTTB | Common Stock | Sale | $31,395 | -9,072 | -19% | $3.46 | 39,938 | 02 Dec 2025 | Direct |