Form 3 Filing for Jill Sommers

This filing is a Form 3, which reports initial beneficial ownership of securities. Jill Sommers, a director at MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), has reported the ownership of non-qualified stock options. These options, which are fully vested, allow for the purchase of the company's Common Stock at various exercise prices and have expiration dates ranging from 2033 to 2035. The filing also includes a Power of Attorney (Exhibit 24.1) authorizing specific individuals to act on Ms. Sommers' behalf for SEC filings. This power of attorney remains in effect until she is no longer required to file beneficial ownership reports or until it is revoked.