Mark I. Massad is Director at MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX). They have made 1 open-market trade across 1 company since 2025, most recently 2026-06-16.
CIK 0002080776
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
1 open-market purchase totalling $184K since 2025, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MIAX | 10,737 | $332K |
Shares reported on the most recent Form 4, priced at the 2026-06-17 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| MIAX | BUY | 2025-08-13 | 2025-08-15 | $23.00 | $184K | +9.3% | +17.3% | +53.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.