Miami International Holdings (MIAX)Director bought ~$167

~$167

Approx. value · 4 sh @ $41.76

4.56M

Holds after · shares reported

Traded

Sep 26, 2025

Filed

Sep 30, 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, 2025Insider · 9 peopleInsiders: 12 purchases (~$865K)
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, 2025 · this disclosureInsider · 7 days before an 8-KDirector purchased ~$167 of MIAX shares in the open market

What came next

1. 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.”
2. Nov 5, 2025Company filing · Form 8-K · ResultsReported its results
3. Dec 15, 2025Company filing · Form 8-K · Unregistered shares, Other newsSold new shares without registering them, and reported other company news

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 Murray Stahl, Director

• SEC Form 4 at Miami International Holdings (MIAX)Sep 30, 2025
• SEC Form 4 at Texas Pacific Land Corporation (TPL)Jun 27, 2025
• SEC Form 4 at Texas Pacific Land Corporation (TPL)Jun 27, 2025
• SEC Form 4 at Texas Pacific Land Corporation (TPL)Jun 27, 2025
• SEC Form 4 at Texas Pacific Land Corporation (TPL)Jun 27, 2025

The full history of Murray Stahl, 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.