SEC Filing Summary for Miami International Holdings, Inc.

This filing details significant insider transactions for Miami International Holdings, Inc. (MIAX) on June 16, 2026. Douglas M. Schafer Jr., EVP and CIO, acquired 23,298 shares of Common Stock. Additionally, he was granted incentive and nonqualified stock options. The incentive stock option for 2,485 shares has an exercise price of $40.24 and vests in installments through June 16, 2029. The nonqualified stock option for 21,481 shares, also with an exercise price of $40.24, vests similarly through June 16, 2029. These transactions indicate a notable increase in Schafer's direct holdings and options within the company, subject to his continued service.