SEC Form 4 · accession 0001628280-26-043985
MIAMI INTERNATIONAL HOLDINGS, INC. · MIAX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
David A Brown
Director
Period of report
Jun 15, 2026
Accepted (ET)
Jun 17, 2026 · 5:07 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001438472
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Jun 15, 2026 | A | 2,267 | $0.00 | A | 2,267 | D | |
| Common StockF2 | Jun 16, 2026 | A | 4,970 | $0.00 | A | 7,237 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nonqualified Stock Option (Right to Buy)F3 | $40.24 | Jun 16, 2026 | A | 5,142 | A | — | Jun 15, 2036 | Common Stock | 5,142 | 5,142 | D |
Explanation of responses
- F1The amount represents restricted stock units ("RSUs") that fully vested on the date of grant. Each RSU represents a right to receive one share of the Issuer's common stock.
- F2The amount represents RSUs that vest on the last business day immediately preceding the 2027 annual meeting of stockholders, subject to the reporting person's continued service to the Issuer through the vesting date.
- F32,571 of the shares subject to this option will vest on June 30, 2026, 1,285 of the shares subject to this option will vest on September 30, 2026 and the remaining 1,286 of the shares subject to this option 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.