BROWN DAVID A 4

4 · MIAMI INTERNATIONAL HOLDINGS, INC. · Filed Aug 19, 2025

Form 4

Period: 2025-08-15

Director

Transactions

Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+18,750→ 18,750 total
Exercise: $16.14Exp: 2031-05-31→ Common Stock (18,750 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+7,500→ 7,500 total
Exercise: $16.14Exp: 2031-05-31→ Common Stock (7,500 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−278→ 278 total
Exercise: $16.14Exp: 2031-05-31→ Common Stock (278 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−278→ 0 total
Exercise: $16.14Exp: 2031-08-31→ Nonvoting Common Stock (278 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−18,750→ 0 total
Exercise: $16.14Exp: 2031-05-31→ Nonvoting Common Stock (18,750 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−7,500→ 0 total
Exercise: $16.14Exp: 2031-07-31→ Nonvoting Common Stock (7,500 underlying)

Footnotes (2)

[F1]The options were granted initially as the right to buy Nonvoting Common Stock. On the closing date of the initial public offering, these converted to the right to buy Common Stock instead of Nonvoting Common Stock, for the same price and under the same conditions.
[F2]The options are fully vested.

Documents

1 file