MIAMI INTERNATIONAL HOLDINGS, INC.
MIAX
97 insider filings · Latest: Aug 4, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Mar 17, 2026 | Mar 17 8:29 PM | DOUGLAS M. SCHAFER JR. | Proposed Sale | 144,000 | $39.49 | $5.7M | — | View → |
| Mar 5, 2026 | Mar 6 10:57 PM | Murray StahlDirector | Purchase | 7,200 | $43.08 | $310.2K | 4,633,842(I) | View → |
| Mar 4, 2026 | Mar 6 10:52 PM | Murray StahlDirector | Purchase | 7,200 | $43.38 | $312.3K | 4,626,642(I) | View → |
| Mar 2, 2026 | Mar 6 9:12 PM | Murray StahlDirector | Sale | 53,578 | $40.92 | $2.2M | 4,619,442(I) | View → |
| Mar 4, 2026 | Mar 5 7:44 PM | Murray StahlDirector | Purchase | 7,200 | $43.38 | $312.3K | 4,696,666(I) | View → |
| Mar 2, 2026 | Mar 4 8:22 PM | Murray StahlDirector | Sale | 121,054 | $40.92 | $5.0M | 4,689,466(I) | View → |
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Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Jun 2, 2026 | Jun 4 8:40 PM | Douglas M. Schafer JREVP and CIO | Option Exercise | 48,000 | $12.00 | 6,000(D) | View → |
| Jun 2, 2026 | Jun 4 8:37 PM | Shelly BrownEVP, Chief Strategy Officer | Option Exercise | 16,000 | $12.00 | 16,000(D) | View → |
| Jun 2, 2026 | Jun 4 8:37 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 70,000 | $12.00 | 140,000(I) | View → |
| May 19, 2026 | May 19 8:34 PM | Judson Gray TeekellDirector | Option Exercise | 22,667 | $12.00 | 0(D) | View → |
| May 11, 2026 | May 13 8:26 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 24,999 | $12.00 | 0(D) | View → |
| May 5, 2026 | May 7 8:07 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 15,771 | $12.00 | 210,000(I) | View → |
| May 4, 2026 | May 5 12:17 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 54,229 | $12.00 | 225,771(I) | View → |
| May 4, 2026 | May 5 12:16 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Option Exercise | 11,000 | $12.00 | 18,333(D) | View → |
| May 4, 2026 | May 5 11:43 AM | Shelly BrownEVP, Chief Strategy Officer | Option Exercise | 16,000 | $12.00 | 32,000(D) | View → |
| May 4, 2026 | May 5 11:32 AM | Douglas M. Schafer JREVP and CIO | Option Exercise | 48,000 | $12.00 | 54,000(D) | View → |
| May 4, 2026 | May 5 11:31 AM | Kurt M. EckertDirector | Option Exercise | 5,625 | $12.00 | 11,563(D) | View → |
| May 4, 2026 | May 5 11:30 AM | Barbara J. ComlyEVP, GC & Corporate Secretary | Option Exercise | 28,000 | $12.00 | 84,000(D) | View → |
| Apr 15, 2026 | Apr 17 8:17 PM | Thomas P. GallagherDirector, Chairman & CEO | Option Exercise | 70,001 | $12.00 | 280,000(I) | View → |
| Apr 15, 2026 | Apr 17 8:15 PM | Barbara J. ComlyEVP, GC & Corporate Secretary | Option Exercise | 29,667 | $12.00 | 112,000(D) | View → |
| Apr 9, 2026 | Apr 10 10:41 PM | John BeckelmanDirector | Option Exercise | 8,667 | $12.00 | 0(D) | View → |
| Apr 8, 2026 | Apr 9 8:20 PM | Shelly BrownEVP, Chief Strategy Officer | Option Exercise | 16,434 | $12.00 | 48,000(D) | View → |
| Apr 8, 2026 | Apr 9 8:15 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Option Exercise | 7,572 | $12.00 | 0(D) | View → |
| Apr 7, 2026 | Apr 9 8:15 PM | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | Option Exercise | 4,763 | $12.00 | 29,333(D) | View → |
| Apr 7, 2026 | Apr 9 8:13 PM | Shelly BrownEVP, Chief Strategy Officer | Option Exercise | 900 | $12.00 | 64,434(D) | View → |
| Mar 30, 2026 | Apr 1 8:45 PM | Shelly BrownEVP, Chief Strategy Officer | Option Exercise | 30,016 | $25.78 | 0(D) | View → |