Raymond Mark F. 4

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

Insider Transaction Report

Form 4

Period: 2025-08-15

MIAMI INTERNATIONAL HOLDINGS, INC.MIAX

Raymond Mark F.

Director

Transactions

Conversion
Common Stock
2025-08-15+26,327→ 43,827 total
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−16,000→ 0 total
Exercise: $12.00Exp: 2026-06-19→ Nonvoting Common Stock (16,000 underlying)
Conversion
Common Stock
2025-08-15+17,500→ 43,827 total
Conversion
Nonvoting Common Stock
2025-08-15−26,327→ 0 total
→ Common Stock (26,327 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+16,000→ 16,000 total
Exercise: $12.00Exp: 2027-05-31→ Common Stock (16,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−16,000→ 0 total
Exercise: $12.00Exp: 2028-04-30→ Nonvoting Common Stock (16,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−16,000→ 0 total
Exercise: $12.00Exp: 2029-05-31→ Nonvoting Common Stock (16,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+16,000→ 16,000 total
Exercise: $12.00Exp: 2029-05-31→ Common Stock (16,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+16,000→ 16,000 total
Exercise: $12.00Exp: 2028-04-30→ Common Stock (16,000 underlying)
Conversion
Series B Preferred Stock
2025-08-15−17,500→ 0 total
→ Common Stock (17,500 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−16,000→ 0 total
Exercise: $12.00Exp: 2027-05-31→ Nonvoting Common Stock (16,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+16,000→ 16,000 total
Exercise: $12.00Exp: 2026-06-19→ Common Stock (16,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−20,000→ 0 total
Exercise: $14.00Exp: 2030-06-30→ Nonvoting Common Stock (20,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+20,000→ 20,000 total
Exercise: $14.00Exp: 2030-06-30→ Common Stock (20,000 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15−12,222→ 0 total
Exercise: $16.14Exp: 2031-05-31→ Nonvoting Common Stock (12,222 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-08-15+12,222→ 12,222 total
Exercise: $16.14Exp: 2031-05-31→ Common Stock (12,222 underlying)

Footnotes (4)

[F1]Includes 17,500 shares of Series B Preferred Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.
[F2]Includes 26,327 shares of Nonvoting Common Stock that have been converted into shares of Common Stock on a one-for-one basis upon the closing of the Company's initial public offering and which have no expiration date.
[F3]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.
[F4]The options are fully vested.

Documents

1 file

4
wk-form4_1755633925.xmlPrimary
FORM 4