4processed

Form 4 — Insider Transaction

MIAMI INTERNATIONAL HOLDINGS, INC.(MIAX)

Filing Date

June 16, 2026

Accepted

June 16, 2026

Accession No.

0002080477-26-000012

CIK

0001438472

Insider Transactions

InsiderTitleTypeSharesPriceValueOwned AfterSecurityDate
Gallagher Thomas P.Chairman & CEOOther233.0K$0743.9KCommon StockJun 16, 2026
Gallagher Thomas P.Chairman & CEOOther2.5K$02.5KIncentive Stock Option (Right to Buy)Jun 16, 2026
Gallagher Thomas P.Chairman & CEOOther237.2K$0237.2KNonqualified Stock Option (Right to Buy)Jun 16, 2026