Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-07-06 Sale | 2026-07-07 5:03 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,000 | $42.16 | $2,951,381 | 1,891,503 (Indirect) | View |
| 2026-06-02 Sale | 2026-06-04 4:37 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,000 | $42.36 | $2,965,200 | 1,863,275 (Indirect) | View |
| 2026-05-05 Sale | 2026-05-07 4:07 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 15,771 | $47.92 | $755,746 | 1,933,275 (Indirect) | View |
| 2026-05-04 Sale | 2026-05-05 08:17 am | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 54,229 | $47.26 | $2,562,863 | 1,949,046 (Indirect) | View |
| 2026-04-15 Sale | 2026-04-17 4:17 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 224,025 | $43.43 | $9,729,692 | 2,489,238 (Indirect Direct) | View |
| 2025-08-13 Purchase | 2025-08-15 4:48 pm | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 12,000 | $23 | $276,000 | 12,000 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-07-06 Exercise | 2026-07-07 5:03 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,000 | $0 | 1,891,503 (Indirect) | View |
| 2026-07-06 Exercise | 2026-07-07 5:03 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,000 | $12 | 1,891,503 (Indirect) | View |
| 2026-06-16 Option Award | 2026-06-18 4:13 pm | N/A 2036-06-15 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 472,637 | $0 | 983,599 (Direct) | View |
| 2026-06-02 Exercise | 2026-06-04 4:37 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,000 | $0 | 1,863,275 (Indirect) | View |
| 2026-06-02 Exercise | 2026-06-04 4:37 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,000 | $12 | 1,863,275 (Indirect) | View |
| 2026-05-11 Exercise | 2026-05-13 4:26 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 24,999 | $0 | 510,962 (Direct) | View |
| 2026-05-11 Exercise | 2026-05-13 4:26 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 24,999 | $12 | 510,962 (Direct) | View |
| 2026-05-05 Exercise | 2026-05-07 4:07 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 15,771 | $0 | 1,933,275 (Indirect) | View |
| 2026-05-05 Exercise | 2026-05-07 4:07 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 15,771 | $12 | 1,933,275 (Indirect) | View |
| 2026-05-04 Exercise | 2026-05-05 08:17 am | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 54,229 | $0 | 1,949,046 (Indirect) | View |
| 2026-05-04 Exercise | 2026-05-05 08:17 am | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 54,229 | $12 | 1,949,046 (Indirect) | View |
| 2026-04-15 Exercise | 2026-04-17 4:17 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,001 | $0 | 2,489,238 (Indirect) | View |
| 2026-04-15 Exercise | 2026-04-17 4:17 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 70,001 | $12 | 2,489,238 (Indirect) | View |
| 2026-03-30 Tax Withholding | 2026-04-01 4:42 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 20,875 | $37.5 | 1,827,399 (Indirect) | View |
| 2026-02-10 Tax Withholding | 2026-02-12 4:33 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 50,100 | $41.33 | 535,863 (Direct) | View |
| 2025-12-23 Gift | 2025-12-29 08:46 am | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 2,000 | $0 | 585,963 (Direct) | View |
| 2025-08-26 Tax Withholding | 2025-08-28 4:33 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 192,220 | $33.9 | 2,436,237 (Indirect) | View |
| 2025-08-15 Conversion | 2025-08-19 4:06 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 709,858 | $0 | 4,226,457 (Indirect) | View |
| 2025-08-15 Exercise | 2025-08-19 4:06 pm | N/A 2026-08-02 | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 3,200,000 | $0 | 4,226,457 (Direct) | View |
Ownership | 2025-08-13 5:08 pm | N/A N/A | MIAMI INTERNATIONAL HOLDINGS INC. | MIAX | Gallagher Thomas P. Chairman & CEO | 0 | $0 | 4,325,707 (Indirect) | View |