MIAMI INTERNATIONAL HOLDINGS, INC.
MIAX
110 insider filings · Latest: Oct 2, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| May 5, 2026 | May 7 8:07 PM | Thomas P. GallagherDirector, Chairman & CEO | Sale | 15,771 | $47.92 | $755.7K | 1,723,275(I) | View → |
| May 4, 2026 | May 5 12:17 PM | Thomas P. GallagherDirector, Chairman & CEO | Sale | 54,229 | $47.26 | $2.6M | 1,723,275(I) | View → |
| May 4, 2026 | May 5 12:16 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Sale | 11,000 | $47.28 | $520.1K | 116,221(D) | View → |
| May 4, 2026 | May 5 11:43 AM | Shelly BrownEVP, Chief Strategy Officer | Sale | 16,000 | $47.28 | $756.5K | 325,047(D) | View → |
| May 4, 2026 | May 5 11:41 AM | Judson Gray TeekellDirector | Sale | 3,000 | $47.30 | $141.9K | 56,338(D) | View → |
| May 4, 2026 | May 5 11:32 AM | Douglas M. Schafer JREVP and CIO | Sale | 48,000 | $47.25 | $2.3M | 396,681(D) | View → |
| May 4, 2026 | May 5 11:31 AM | Kurt M. EckertDirector | Sale | 5,625 | $47.29 | $266.0K | 142,375(D) | View → |
| May 4, 2026 | May 5 11:30 AM | Barbara J. ComlyEVP, GC & Corporate Secretary | Sale | 28,000 | $47.26 | $1.3M | 843,844(D) | View → |
| May 4, 2026 | May 4 8:32 PM | J. GRAY TEEKELL | Proposed Sale | 9,000 | $47.17 | $424.5K | — | View → |
| May 4, 2026 | May 4 8:31 PM | SHELLY BROWN | Proposed Sale | 32,000 | $47.17 | $1.5M | — | View → |
| May 4, 2026 | May 4 8:31 PM | EDWARD DEITZEL | Proposed Sale | 33,000 | $47.17 | $1.6M | — | View → |
| Apr 15, 2026 | Apr 17 8:17 PM | Thomas P. GallagherDirector, Chairman & CEO | Sale | 224,025 | $43.43 | $9.7M | 485,963(I) | View → |
| Apr 15, 2026 | Apr 17 8:15 PM | Barbara J. ComlyEVP, GC & Corporate Secretary | Sale | 29,667 | $43.64 | $1.3M | 843,844(D) | View → |
| Apr 15, 2026 | Apr 15 8:55 PM | BARBARA J COMLY | Proposed Sale | 141,667 | $42.91 | $6.1M | — | View → |
| Apr 15, 2026 | Apr 15 8:53 PM | GALLAGHER INVESTMENTS LLC | Proposed Sale | 454,125 | $42.91 | $19.5M | — | View → |
| Apr 15, 2026 | Apr 15 8:42 PM | THOMAS P GALLAGHER | Proposed Sale | 49,900 | $42.91 | $2.1M | — | View → |
| Apr 8, 2026 | Apr 9 8:20 PM | Shelly BrownEVP, Chief Strategy Officer | Sale | 16,434 | $42.08 | $691.5K | 325,047(D) | View → |
| Apr 8, 2026 | Apr 9 8:15 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Sale | 7,572 | $42.02 | $318.2K | 116,221(D) | View → |
| Apr 7, 2026 | Apr 9 8:15 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Sale | 4,763 | $42.00 | $200.0K | 116,221(D) | View → |
| Apr 7, 2026 | Apr 9 8:13 PM | Shelly BrownEVP, Chief Strategy Officer | Sale | 900 | $42.00 | $37.8K | 325,047(D) | View → |
Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | Oct 6 9:28 PM | Douglas M. Schafer JREVP and CIO | Option Exercise | 40,000 | $12.00 | 155,334(D) | View → |
| Sep 25, 2026 | Sep 29 8:46 PM | Harish JayabalanEVP, CISO and CRO | Option Exercise | 8,333 | $12.00 | 8,333(D) | View → |
| Sep 3, 2026 | Sep 4 8:35 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 89,603 | $22.40 | 8,928(I) | View → |
| Sep 2, 2026 | Sep 4 8:31 PM | Barbara J. ComlyEVP, GC & Corporate Secretary | Option Exercise | 44,445 | $12.00 | 44,444(D) | View → |
| Sep 3, 2026 | Sep 4 8:28 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Option Exercise | 11,000 | $12.00 | 66,000(D) | View → |
| Sep 2, 2026 | Sep 4 8:25 PM | Douglas M. Schafer JREVP and CIO | Option Exercise | 48,000 | $12.00 | 195,334(D) | View → |
| Aug 17, 2026 | Aug 19 8:12 PM | Cynthia SchwarzkopfDirector | Option Exercise | 5,000 | $12.00 | 11,916(D) | View → |
| Aug 4, 2026 | Aug 6 8:11 PM | Kurt M. EckertDirector | Option Exercise | 1,063 | $12.00 | 0(D) | View → |
| Aug 4, 2026 | Aug 6 8:10 PM | Harish JayabalanEVP, CISO and CRO | Option Exercise | 20,000 | $15.22 | 17,598(D) | View → |
| Aug 4, 2026 | Aug 6 8:09 PM | Barbara J. ComlyEVP, GC & Corporate Secretary | Option Exercise | 44,445 | $12.00 | 88,889(D) | View → |
| Aug 4, 2026 | Aug 6 8:08 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Option Exercise | 11,000 | $12.00 | 77,000(D) | View → |
| Aug 4, 2026 | Aug 6 8:06 PM | Douglas M. Schafer JREVP and CIO | Option Exercise | 48,000 | $12.00 | 43,334(D) | View → |
| Aug 4, 2026 | Aug 6 8:05 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 48,334 | $12.00 | 235,000(I) | View → |
| Jul 15, 2026 | Jul 16 8:15 PM | Cynthia SchwarzkopfDirector | Option Exercise | 5,000 | $12.00 | 16,916(D) | View → |
| Jul 13, 2026 | Jul 14 8:07 PM | Barbara J. ComlyEVP, GC & Corporate Secretary | Option Exercise | 28,000 | $12.00 | 0(D) | View → |
| Jul 13, 2026 | Jul 14 8:04 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 70,000 | $12.00 | 0(I) | View → |
| Jul 7, 2026 | Jul 7 9:03 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 28,228 | $12.00 | 70,000(I) | View → |
| Jul 6, 2026 | Jul 7 9:03 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 41,772 | $12.00 | 98,228(I) | View → |
| Jul 6, 2026 | Jul 7 8:14 PM | Harish JayabalanEVP, CISO and CRO | Option Exercise | 20,000 | $12.00 | 14,168(D) | View → |
| Jul 6, 2026 | Jul 7 8:13 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Option Exercise | 11,000 | $12.00 | 88,000(D) | View → |
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