| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Quisel John D | Chief Executive Officer, Director | C/O DISC MEDICINE, INC., 321 ARSENAL STREET, SUITE 101, WATERTOWN | By: /s/ Rahul Khara, as Attorney-in-Fact | 17 Feb 2026 | 0001586788 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IRON | Common Stock | Sale | $833,775 | -13,264 | -5.5% | $62.86 | 226,064 | 17 Feb 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | This transaction represents shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of certain restricted stock units previously reported in Table I. This sale is a "sell to cover" transaction and does not represent a discretionary transaction by the Reporting Person. |