MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX) has 30 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 6 sales totalling $15.5M. Most recent filing: Sept. 17, 2026.
| Date | Insider | Value | Shares | Stake | Pre-planned | Links |
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| Sept. 17, 2026 filed Sept. 16, 2026 | Brown Shelly EVP, Chief Strategy Officer | −$819,188 | 21,217 | −6% | Yes | |
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| Sept. 11, 2026 | Brown Shelly EVP, Chief Strategy Officer | $692,679 | 16,283 | −5% | No | |
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| Sept. 4, 2026 filed Sept. 3, 2026 | Gallagher Thomas P. Chairman & CEO | — | +42,603 | — | Yes | |
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| Sept. 4, 2026 filed Sept. 2, 2026 | Comly Barbara J. EVP, GC & Corporate Secretary | $1,266,238 | 133,335 | 0% | Yes | |
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| Sept. 4, 2026 filed Sept. 3, 2026 | Deitzel Edward EVP, CRO, CCO MIAX Exchanges | $332,310 | 33,000 | 0% | Yes | |
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Showing the 5 most recent of 30 filings in the last 90 days.
Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.
Real-time Telegram alerts the moment a Form 4 is filed. Filings shown here are delayed by 72 hours.
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