| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Lozier Kenneth W. | Director | C/O MIAMI INTERNATIONAL HOLDINGS, INC., 7 ROSZEL ROAD, SUITE 1A, PRINCETON | /s/Alessandra Maria Corona Henriques, Attorney-in-Fact | 2025-08-15 | 0002080877 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MIAX | Common Stock | Purchase | $23K | +1K | $23.00 | 1K | Aug 13, 2025 | Direct |