Gallagher Thomas P.'s Form 4 filing
Miami International Holdings, Inc. (MIAX) · filed Apr 17, 2026
- Accession no.
- 0001628280-26-025753
- Filed
- Apr 17, 2026
- Trade date
- Apr 15, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 4 non-derivative transactions and 1 derivative transaction. Open-market sales total $9.73M. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Gallagher Thomas P.CIK 0002080477 | Director, Officer (Chairman & CEO) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Apr 15, 2026 | Common Stock | MOption exerciseAcquired | +70,001 | $12.00 | +$840,012 | 1,897,400 | Indirect | |
| Apr 15, 2026 | Common Stock | SSaleDisposed | −70,001 | $43.36 | −$3,035,243.36 | 1,827,399 | Indirect | |
| Apr 15, 2026 | Common Stock | SSaleDisposed | −104,124 | $43.36 | −$4,514,816.64 | 1,723,275 | Indirect | |
| Apr 15, 2026 | Common Stock | SSaleDisposed | −49,900 | $43.68 | −$2,179,632 | 485,963 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Apr 15, 2026 | Common Stock | MOption exerciseDisposed | −70,001 | $0.00 | $0 | 280,000 | Indirect |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.