| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Gallagher Thomas P. | Chairman & CEO, Director | C/O MIAMI INTERNATIONAL HOLDINGS, INC, 7 ROSZEL ROAD, SUITE 1A, PRINCETON | /s/Alessandra Maria Corona Henriques, Attorney-in-Fact | 15 Aug 2025 | 0002080477 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MIAX | Common Stock | Purchase | $276,000 | +12,000 | $23.00 | 12,000 | 13 Aug 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | 12,000 shares of common stock jointly with his spouse with right of survival |