Senior insider sale
Chairman & CEO at MIAMI INTERNATIONAL HOLDINGS, INC. — senior position signals high conviction
$19.49M
454.13K shares
What this filing means
GALLAGHER THOMAS P. plans to sell 454.13K shares of MIAMI INTERNATIONAL HOLDINGS, INC. valued at approximately $19.49M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 4/15/2026ACC: 0001950047-26-003523
DirectorOfficer· Chairman & CEO
Since Feb 2026
454.13K
Shares to sell
$19.49M
Approx. market value
454.13K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months2
Exercise of Stock Options
Cash
4/15/2026
350KRestricted Stock Awards
N/A
12/1/2023
104.12KTotal acquired454.13K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
4/15/2026 | Exercise of Stock Options Cash | 350K | — |
12/1/2023 | Restricted Stock Awards N/A | 104.12K | — |
| Total | 454.13K | ||
Planned & Completed Dispositions1
NYSEPlanned
Units to sell
454.13K
Market value
$19.49M
4/15/2026
Total
Units
454.13K
Value
$19.49M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
4/15/2026 | 454.13K | $19.49M | NYSE | Planned |
| Total | 454.13K | $19.49M | ||