| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Townsend Richard Nolan | Chief Executive Officer, Director | C/O LEXEO THERAPEUTICS, INC., 345 PARK AVENUE SOUTH, FLOOR 6, NEW YORK | /s/ Youjin Choi, Attorney-in-Fact | 17 Mar 2026 | 0001995218 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | LXEO | Common Stock | Award | +2,623 | +0.67% | $2.64* | 395,106 | 13 Mar 2026 | Direct | F1, F2 |
| Id | Content |
|---|---|
| F1 | The reporting person is voluntarily reporting the acquisition of shares of the Issuer's common stock pursuant to the Lexeo Therapeutics, Inc. 2023 Employee Stock Purchase Plan. This transaction is exempt under both Rule 16b-3(c) and Rule 16b-3(d). |
| F2 | Includes 261,349 Restricted Stock Units. |