Key facts
- This page summarizes Mark I. Massad's Form 4 filing for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX).
- 4 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 15 Aug 2025, 16:48.
Mark I. Massad - 13 Aug 2025 Form 4 Insider Report for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX)
- Reporting relationship
- Director
- Issuer ticker
- MIAX
- Reported as of
- 13 Aug 2025
- Net transaction value
- +$184,000
- SEC form
- 4
- Accepted by SEC
- 15 Aug 2025, 16:48:15 UTC
- Next SEC filing
- 17 Jun 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/Alessandra Maria Corona Henriques, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Mark I. Massad filed Form 4 for MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) on 15 Aug 2025.
Change
- No earlier filing in this sequence is available for direct comparison.
- Current net transaction value: +$184,000.
Research use
- 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.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0002080776
Primary reporting owner
Massad Mark I.
- 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
- 15 Aug 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MIAX
transaction
Common Stock
Purchase
- Transaction value
- $80,500
- Shares
- +3,500
- Change %
- Price
- $23.00
- Shares after
- 3,500
- Date
- 13 Aug 2025
- Ownership
- Direct
MIAX
transaction
Common Stock
Purchase
- Transaction value
- $57,500
- Shares
- +2,500
- Change %
- Price
- $23.00
- Shares after
- 2,500
- Date
- 13 Aug 2025
- Ownership
- By spouse
- Footnotes
- F1
MIAX
transaction
Common Stock
Purchase
- Transaction value
- $34,500
- Shares
- +1,500
- Change %
- Price
- $23.00
- Shares after
- 1,500
- Date
- 13 Aug 2025
- Ownership
- By child
- Footnotes
- F1
MIAX
transaction
Common Stock
Purchase
- Transaction value
- $11,500
- Shares
- +500
- Change %
- Price
- $23.00
- Shares after
- 500
- Date
- 13 Aug 2025
- Ownership
- By child
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
Mr. Massad disclaims beneficial ownership of the shares of common stock owned by his spouse and children.