Gallagher Thomas P. insider trades
Gallagher Thomas P. has filed 17 Form 4s with the SEC that we hold, all for Miami International Holdings, INC. (MIAX), as Chairman & CEO, Director. Across all of them we count 1 purchase worth $276.0K and 12 sales worth $32.3M reported on Form 4. In the last 12 months: 0 purchases ($0) and 12 sales ($32.3M). The largest single trade was a sale of 149,700 shares of Miami International Holdings, INC. worth $6.2M, dated 2026-08-19. Of 2 sales filed since we began reading the 10b5-1 checkbox, 2 (100%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2025-08-15 and the latest 2026-09-04.
Miami International Holdings, INC. (MIAX)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2025-08-13 | P, purchase reported on Form 4 | 12,000 | $276.0K | 2025-08-15 |
| 2026-04-15 | S, sale reported on Form 4 | 49,900 | $2.2M | 2026-04-17 |
| 2026-04-15 | S, sale reported on Form 4 | 70,001 | $3.0M | 2026-04-17 |
| 2026-04-15 | S, sale reported on Form 4 | 104,124 | $4.5M | 2026-04-17 |
| 2026-05-04 | S, sale reported on Form 4 | 54,229 | $2.6M | 2026-05-05 |
| 2026-05-05 | S, sale reported on Form 4 | 15,771 | $755.7K | 2026-05-07 |
| 2026-06-02 | S, sale reported on Form 4 | 70,000 | $3.0M | 2026-06-04 |
| 2026-07-06 | S, sale reported on Form 4 | 41,772 | $1.8M | 2026-07-07 |
| 2026-07-07 | S, sale reported on Form 4 | 28,228 | $1.2M | 2026-07-07 |
| 2026-07-13 | S, sale reported on Form 4 | 70,000 | $3.0M | 2026-07-14 |
| 2026-08-04 | S, sale reported on Form 4 | 48,334 | $2.2M | 2026-08-06 |
| 2026-08-19 | S, sale reported on Form 4 | 149,700 | $6.2M | 2026-08-20 |
| 2026-09-03 | S, sale reported on Form 4 | 47,000 | $2.0M | 2026-09-04 |
Counted from the Form 4 filings this reporting owner (SEC CIK 2080477) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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