Miami International Holdings, Inc (MIAX) insider trading
Every open-market stock purchase and sale by Miami International Holdings, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Thomas P. Gallagher (CEO) and 8 others sold $21.8M in the last 90 days.
- Last insider buy: Murray Stahl (Director), $310K, 7 months ago.
Last 12 months: insiders bought $1M (5 buys) and sold $66.1M (47 sales). Last close $38.79 on Sep 18, 2026.
Recent MIAX insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 16, 2026 | Shelly Brown (C-suite exec) | Sold | $819K |
| Sep 11, 2026 | Shelly Brown (C-suite exec) | Sold (not open market) | $693K |
| Sep 3, 2026 | Thomas P. Gallagher (CEO) | Sold | $2M |
| Sep 3, 2026 | Edward Deitzel (C-suite exec) | Sold | $464K |
| Sep 3, 2026 | Thomas P. Gallagher (CEO) | Bought (not open market) | — |
| Sep 3, 2026 | Thomas P. Gallagher (CEO) | Bought (not open market) | — |
| Sep 3, 2026 | Thomas P. Gallagher (CEO) | Bought (not open market) | — |
| Sep 3, 2026 | Thomas P. Gallagher (CEO) | Bought (not open market) | — |
| Sep 3, 2026 | Edward Deitzel (C-suite exec) | Bought (not open market) | — |
| Sep 3, 2026 | Thomas P. Gallagher (CEO) | Bought (not open market) | — |
| Sep 2, 2026 | Douglas M. Schafer JR (C-suite exec) | Sold | $1.9M |
| Sep 2, 2026 | Barbara J. Comly (VP) | Sold | $1.8M |
| Sep 2, 2026 | Judson Gray Teekell (Director) | Sold | $231K |
| Sep 2, 2026 | Judson Gray Teekell (Director) | Sold | $123K |
| Sep 2, 2026 | Douglas M. Schafer JR (C-suite exec) | Bought (not open market) | — |
| Sep 2, 2026 | Barbara J. Comly (VP) | Bought (not open market) | — |
| Sep 2, 2026 | Douglas M. Schafer JR (C-suite exec) | Bought (not open market) | — |
| Aug 19, 2026 | Thomas P. Gallagher (CEO) | Sold | $6.2M |
| Aug 18, 2026 | Thomas P. Gallagher (CEO) | Sold (not open market) | $6.4M |
| Aug 18, 2026 | Barbara J. Comly (VP) | Sold (not open market) | $1.8M |
| Aug 4, 2026 | Thomas P. Gallagher (CEO) | Sold | $2.2M |
| Aug 4, 2026 | Douglas M. Schafer JR (C-suite exec) | Sold | $2.2M |
| Aug 4, 2026 | Barbara J. Comly (VP) | Sold | $2M |
| Aug 4, 2026 | Harish Jayabalan (C-suite exec) | Sold | $918K |
| Aug 4, 2026 | Edward Deitzel (C-suite exec) | Sold | $504K |
Who's trading MIAX
- Shelly Brown, C-suite exec: sold $4.4M (10 sales), last Sep 16, 2026
- Thomas P. Gallagher, CEO: sold $26.4M (9 sales), last Sep 3, 2026
- Edward Deitzel, C-suite exec: sold $2.5M (7 sales), last Sep 3, 2026
- Judson Gray Teekell, Director: sold $881K (7 sales), last Sep 2, 2026
- Barbara J. Comly, VP: sold $7.6M (5 sales), last Sep 2, 2026
- Douglas M. Schafer JR, C-suite exec: sold $10.4M (5 sales), last Sep 2, 2026
- Kurt M. Eckert, Director: sold $2M (4 sales), last Aug 4, 2026
- Harish Jayabalan, C-suite exec: sold $1.7M (3 sales), last Aug 4, 2026
- Cynthia Schwarzkopf, Director: sold $1M (2 sales), last Jul 15, 2026
- Cees Vermaas, CEO: other filings, last Jun 16, 2026
- David A Brown, Director: other filings, last Jun 16, 2026
- John Beckelman, Director: other filings, last Jun 16, 2026
- Lance Emmons, CFO: sold $2M (1 sale), last Jun 16, 2026
- Kenneth W. Lozier, Director: other filings, last Jun 16, 2026
- Mark I. Massad, Director: other filings, last Jun 16, 2026
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