Miami International Holdings (MIAX)Director bought ~$81K

~$81K

Approx. value · 3,500 sh @ $23.00

3,500

Holds after · shares reported

Traded

Aug 13, 2025

Filed

Aug 15, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Aug 13, 2025 · this disclosureInsiderDirector purchased ~$81K of MIAX shares in the open market

What came next

1. Aug 13, 2025Insider · 9 peopleInsiders: 11 purchases (~$784K)
2. Aug 14, 2025InsiderCFO purchased ~$126 of MIAX shares in the open market
3. Aug 28, 2025Insider · Their first buy on recordDirector purchased ~$1.24M of MIAX shares in the open market
4. Sep 26, 2025Insider · 7 days before an 8-KDirector purchased ~$167 of MIAX shares in the open market
5. Oct 3, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On October 3, 2025, Jamil Nazarali, a director of Miami International Holdings, Inc. (the "Company"), notified the Company of his intention to resign effective as of such date, in order to pursue other professional opportunities.”
6. Nov 5, 2025Company filing · Form 8-K · ResultsReported its results

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Miami International Holdings

For Miami International Holdings, OQRO holds 2 insider filings (SEC Form 4 or Form 144) and 2 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its MIAX page.

Other recent filings by Mark I. Massad, Director

• SEC Form 4 at Miami International Holdings (MIAX)Aug 15, 2025
• SEC Form 4 at Miami International Holdings (MIAX)Aug 15, 2025
• SEC Form 4 at Miami International Holdings (MIAX)Aug 15, 2025

The full history of Mark I. Massad, Director is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Miami International Holdings

• SEC Form 4Oct 7, 2026
• SEC Form 144Oct 2, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 11, 2026
• SEC Form 13F-HRMay 15, 2026
• SEC Form 13F-HRMay 15, 2026

Everything OQRO holds on this company is on its MIAX page.