Gallagher Thomas P.
SEC insider (Form 3/4/5 filer). CIK 0002080477. Chairman & CEO at MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX). 54 reported Form 4/5 transactions since Sep 2024; latest on Sep 3, 2026. Located in PRINCETON, NJ.
Companies Gallagher Thomas P. has filed insider reports for
- MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX): Director, Officer, Chairman & CEO
Gallagher Thomas P.
CIK: 0002080477
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MIAMI INTERNATIONAL HOLDINGS, INC.
Discretionary Trading P&L
Holdings
Transaction History (54 total)
- Sep 3, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
ExerciseDirect16.7K shares at avg. $12.00$200K - Sep 3, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
SaleIndirect47K shares at avg. $42.43$2.0M - Sep 3, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
ExerciseDirect8.3K shares at avg. $12.00$100K - Sep 3, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
ExerciseDirect4.5K shares at avg. $22.40$100K - Sep 3, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
ExerciseDirect13.1K shares at avg. $15.22$200K - Sep 3, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
ExerciseIndirect47K shares at avg. $12.00$564K - Aug 19, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
SaleIndirect149.7K shares at avg. $41.13$6.2M - Aug 18, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
Tax PaymentIndirect150.3K shares at avg. $42.41$6.4M - Aug 4, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
SaleIndirect48.3K shares at avg. $45.69$2.2M - Aug 4, 2026MIAX
MIAMI INTERNATIONAL HOLDINGS, INC.
ExerciseIndirect48.3K shares at avg. $12.00$580K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 3, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Exercise | 16,666 | $12.00 | $199,992 | Direct |
| Sep 3, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Sale | 47,000 | $42.43 | $1,994,210 | Indirect |
| Sep 3, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Exercise | 8,333 | $12.00 | $99,996 | Direct |
| Sep 3, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Exercise | 4,464 | $22.40 | $99,994 | Direct |
| Sep 3, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Exercise | 13,140 | $15.22 | $199,991 | Direct |
| Sep 3, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Exercise | 47,000 | $12.00 | $564,000 | Indirect |
| Aug 19, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Sale | 149,700 | $41.13 | $6,157,161 | Indirect |
| Aug 18, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Tax Payment | 150,300 | $42.41 | $6,374,223 | Indirect |
| Aug 4, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Sale | 48,334 | $45.69 | $2,208,380 | Indirect |
| Aug 4, 2026 | MIAX MIAMI INTERNATIONAL HOLDINGS, INC. | Exercise | 48,334 | $12.00 | $580,008 | Indirect |
1-10 of 54 transactions