| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Brown Shelly | EVP, Strat. Planning & BD | C/O MIAMI INTERNATIONAL HOLDINGS, INC., 7 ROSZEL ROAD, SUITE 1A, PRINCETON | /s/Alessandra Maria Corona Henriques, Attorney-in-Fact | 13 Aug 2025 | 0002080506 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | MIAX | Common Stock | 138,054 | 13 Aug 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | MIAX | Series B Preferred Stock | 13 Aug 2025 | Common Stock | 500 | Direct | F1 | |||||||
| holding | MIAX | Nonvoting Common Stock | 13 Aug 2025 | Common Stock | 200,475 | Direct | F2 | |||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 16,666 | $12.00 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 8,333 | $12.00 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 8,333 | $12.00 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 8,333 | $12.00 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 6,570 | $15.22 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 6,195 | $16.14 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 3,878 | $25.78 | Direct | F3 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Common Stock | 5,040 | $19.84 | Direct | F4 | ||||||
| holding | MIAX | Incentive Stock Option (Right to Buy) | 13 Aug 2025 | Common Stock | 8,928 | $22.40 | Direct | F5 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 65,334 | $12.00 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 41,667 | $12.00 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 91,667 | $12.00 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 141,667 | $12.00 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 143,430 | $15.22 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 18,804 | $16.14 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Nonvoting Common Stock | 46,121 | $25.78 | Direct | F6 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Common Stock | 44,959 | $19.84 | Direct | F7 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Common Stock | 75,000 | $20.00 | Direct | F8 | ||||||
| holding | MIAX | Nonqualified Stock Option (Right to Buy) | 13 Aug 2025 | Common Stock | 41,072 | $22.40 | Direct | F9 |
| Id | Content |
|---|---|
| F1 | The shares of Series B Preferred Stock are convertible on a one-for-one basis into shares of common stock commencing on the Company's initial public offering of its common stock ("IPO") effective date, which is August 13, 2025. The Series B Preferred Stock has no expiration date. |
| F2 | The shares of nonvoting common stock are convertible on a one-for-one basis into shares of common stock commencing at any time. The nonvoting common stock has no expiration date. |
| F3 | The incentive stock options are fully vested. The options were granted initially as the right to buy nonvoting common stock. On the closing date of the IPO, these will convert to the right to buy common stock instead of nonvoting common stock. |
| F4 | All the shares subject to this incentive stock option will vest on March 29, 2026 subject to the reporting person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
| F5 | 4,464 of the shares subject to this incentive stock option will vest on each of June 16, 2027 and June 16, 2028, subject to the reporting person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
| F6 | The nonqualified stock options are fully vested. The options were granted initially as the right to buy nonvoting common stock. On the closing date of the IPO, these will convert to the right to buy common stock instead of nonvoting common stock. |
| F7 | 33,333 of the shares subject to this nonqualified stock option are vested and the remaining 11,626 will vest on March 29, 2026 subject to the reporting person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
| F8 | 25,000 of the shares subject to this nonqualified stock option are vested, 25,000 will vest on December 31, 2025 and the remaining 25,000 will vest on December 31, 2026, subject to the reporting person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
| F9 | 16,667 of the shares subject to this nonqualified stock option will vest on June 16, 2026, 12,202 will vest on June 16, 2027 and the remaining 12,203 will vest on June 16, 2028 subject to the reporting person's continued service to the Issuer or its subsidiaries through the applicable vesting date. |
See Exhibit 24.1 - Power of Attorney