Trade Summary

6 days ago, Gallagher Thomas P., serving as COB, CEO at Miami International Holdings, Inc. (MIAX), sold 224,025 shares at $43.43 per share, for a total transaction value of $9,729,692.00. Following this transaction, Gallagher Thomas P. now holds 2,209,238 shares of MIAX.

This sale represents a 9.00% decrease in Gallagher Thomas P.'s stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Wednesday, April 15, 2026 and publicly disclosed via SEC Form 4 filing on Friday, April 17, 2026, 2 days after the trade was made.

Miami International Holdings, Inc. operates in the NONE sector, specifically within the NONE industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.