Mark I. Massad - 13 Aug 2025 Form 3 Insider Report for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)

Reporting relationship: Director
Issuer ticker: MIAX
Reported as of: 13 Aug 2025
Net transaction value: $0
SEC form: 3
Accepted by SEC: 13 Aug 2025, 17:08:04 UTC
Next SEC filing: 17 Jun 2026
Source filing: View source filing
Reporting owner signature: /s/Alessandra Maria Corona Henriques, Attorney-in-Fact

Key filing fact

Mark I. Massad filed Form 3 for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) on 13 Aug 2025.

Key facts

This page summarizes Mark I. Massad's Form 3 filing for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX).
0 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 13 Aug 2025, 17:08.

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

CIK 0002080776 Primary reporting owner

Relationship: Director
Address: C/O MIAMI INTERNATIONAL HOLDINGS, INC., 7 ROSZEL ROAD, SUITE 1A, PRINCETON
Signature: /s/Alessandra Maria Corona Henriques, Attorney-in-Fact
Signature date: 13 Aug 2025

Shares, units, or other non-derivative securities reported in this filing.

MIAX holding

No transaction description listed

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Explanation of responses 1 footnote

Footnote F1

Mr. Massad is a partner in this entity and shares dispositive power over such shares.

SEC remarks

See Exhibit 24.1 - Power of Attorney