Form 4: Miami International Holdings CEO Sells Shares
Insider Transaction (Form 4)
Thomas P. Gallagher, Chairman & CEO and a Director of Miami International Holdings, Inc., sold 149,700 shares of common stock on August 18, 2026 for $41.13 per share.
Summary
- Tax/exercise-price withholding: disposed of 150,300 Common Stock at $42.41 ($6,374,223) on August 18, 2026; holds 1,572,975 after (Indirect).
- Open-market sale: disposed of 149,700 Common Stock at $41.13 ($6,157,161) on August 19, 2026; holds 1,423,275 after (Indirect).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $6,157,161 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Thomas P. Gallagher — Director, Officer (Chairman & CEO)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-18 | Tax/exercise-price withholding | Common Stock | 150,300 | $42 | $6.4M | 1,572,975 |
| 2026-08-19 | Open-market sale | Common Stock | 149,700 | $41 | $6.2M | 1,423,275 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-18 | Tax/exercise-price withholding (150,300 shares) |
| 2026-08-19 | Open-market sale (149,700 shares) |
Keywords
insider transaction, Form 4, MIAX, MIAMI INTERNATIONAL HOLDINGS, INC., bearish, Thomas P. Gallagher
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