Miami International Holdings, INC Form 4 insider transactions

MIAX's EVP and CIO, Douglas M. Schafer Jr., had 21,710 shares withheld for tax obligations related to restricted stock awards, not a sale.

A Miami International Holdings executive surrendered shares to cover tax obligations related to restricted stock awards.

Miami International Holdings, Inc. granted its TISEG CEO, Cees Vermaas, 15,000 nonqualified stock options with a $23 exercise price, vesting over three years.

Miami International Holdings EVP John Smollen purchased 5,000 shares of common stock, signaling confidence in the company's future.

A Miami International Holdings executive reported an open market purchase of common stock and a disposition of nonvoting common stock for tax withholding.

Miami International Holdings CEO Thomas P. Gallagher plans to acquire 12,000 shares of company common stock at $23 per share in August 2025 under a pre-arranged trading plan.

Kenneth W. Lozier, a Director at Miami International Holdings, Inc. (MIAX), purchased 1,000 shares of common stock at $23 per share.

Miami International Holdings Director Mark I. Massad acquired 8,000 shares of common stock for $23 per share, totaling $184,000, through direct and indirect holdings.