| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| HENDERSON MICHAEL THOMAS | Chief Executive Officer, Director | C/O APOGEE THERAPEUTICS, INC., 221 CRESCENT ST., BLDG. 17, STE. 102B, WALTHAM | /s/ Matthew Batters, as attorney-in-fact for Michael Henderson | 06 Jan 2026 | 0001779990 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | APGE | Stock Option (Right to Buy) | Award | $0 | +253,016 | $0.000000 | 253,016 | 02 Jan 2026 | Common Stock | 253,016 | $75.78 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | This option represents the right to purchase 253,016 shares of the Issuer's common stock, which will vest in forty-eight equal monthly installments over a four-year period from the date of grant, subject to the Reporting Person's continued service to the Issuer. |