Company · CIK 0001438472 · SIC 6211 — Security Brokers, Dealers & Flotation Companies · NYSE
MIAMI INTERNATIONAL HOLDINGS, INC. · MIAX
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 16, 2026 SForm 4 → | Sep 17, 4:43 pm EDT | Shelly BrownEVP, Chief Strategy Officer | 21,217 | $38.61 | $819,188 | 316,490 | −6.28% | 10b5-1 |
| Sep 11, 2026 FForm 4 → | Sep 11, 4:23 pm EDT | Shelly BrownEVP, Chief Strategy Officer | 16,283 | $42.54 | $692,679 | 337,707 | — | |
| Sep 3, 2026 SForm 4 → | Sep 4, 4:35 pm EDT | Thomas P. GallagherChairman & CEO, Director | 47,000 | $42.43 | $1,994,210 | 1,423,275 | −3.20% | 10b5-1 |
| Sep 3, 2026 MForm 4 → | Sep 4, 4:35 pm EDT | Thomas P. GallagherChairman & CEO, Director | 89,603 | $12.99 | $1,163,972 | 786,542 | — | 10b5-1 |
| Sep 3, 2026 SForm 4 → | Sep 4, 4:28 pm EDT | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | 11,000 | $42.21 | $464,310 | 119,601 | −8.42% | 10b5-1 |
| Sep 3, 2026 MForm 4 → | Sep 4, 4:28 pm EDT | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | 11,000 | $12.00 | $132,000 | 130,601 | — | 10b5-1 |
| Sep 2, 2026 SForm 4 → | Sep 4, 4:31 pm EDT | Barbara J. ComlyEVP, GC & Corporate Secretary | 44,445 | $40.49 | $1,799,578 | 839,564 | −5.03% | 10b5-1 |
| Sep 2, 2026 MForm 4 → | Sep 4, 4:31 pm EDT | Barbara J. ComlyEVP, GC & Corporate Secretary | 44,445 | $12.00 | $533,340 | 884,009 | — | 10b5-1 |
| Sep 2, 2026 SForm 4 → | Sep 4, 4:25 pm EDT | Douglas M. Schafer Jr.EVP and CIO | 48,000 | $40.48 | $1,943,040 | 387,414 | −11.0% | 10b5-1 |
| Sep 2, 2026 MForm 4 → | Sep 4, 4:25 pm EDT | Douglas M. Schafer Jr.EVP and CIO | 48,000 | $12.00 | $576,000 | 435,414 | — | 10b5-1 |
| Sep 2, 2026 SForm 4 → | Sep 4, 4:21 pm EDT | Judson Gray TeekellDirector | 8,545 | $41.34 | $353,231 | 69,251 | −11.0% | 10b5-1 |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 3, 2026 MForm 4 → | Sep 4, 4:35 pm EDT | Thomas P. GallagherChairman & CEO, Director | 89,603 | — | — | 8,928 | — | 10b5-1 |
| Sep 3, 2026 MForm 4 → | Sep 4, 4:28 pm EDT | Edward DeitzelEVP, CRO, CCO MIAX Exchanges | 11,000 | — | — | 66,000 | — | 10b5-1 |
| Sep 2, 2026 MForm 4 → | Sep 4, 4:31 pm EDT | Barbara J. ComlyEVP, GC & Corporate Secretary | 44,445 | — | — | 44,444 | — | 10b5-1 |
| Sep 2, 2026 MForm 4 → | Sep 4, 4:25 pm EDT | Douglas M. Schafer Jr.EVP and CIO | 48,000 | — | — | 195,334 | — | 10b5-1 |