Director Judson Gray Teekell filed a Form 4 with the SEC on November 9, 2026, disclosing two transactions dated November 5, 2026, involving Common Stock of Miami International Holdings, Inc. tied to the distribution of the Estate of Byrum W. Teekell.

Key Highlights

  • Reporting person: Teekell Judson Gray, identified as a Director of Miami International Holdings, Inc.
  • Disposition: 81,000 shares of Common Stock were disposed of (transaction code W) at $0 from an indirect holding held "By estate of Byrum W. Teekell."
  • Acquisition: 20,250 shares of Common Stock were acquired (transaction code W) at $0 directly, pursuant to the same estate distribution.
  • Resulting ownership: Following both transactions, the reporting person directly beneficially owns 89,501 shares of Common Stock.
  • Transaction dates: Both transactions occurred on November 5, 2026, per the filing.
  • No cash consideration: Both the disposition and the acquisition were reported at a price of $0.

Estate Distribution Drives Ownership Change for Gray Teekell at Miami International Holdings

According to the filing, the reporting person, Teekell Judson Gray, is a Director of Miami International Holdings, Inc. (MIAX), whose address on the form is listed as 7 Roszel Road, Suite 1A, Princeton, New Jersey 08540. The Form 4 covers two non-derivative transactions, both dated November 5, 2026, each carrying transaction code W and each at a price of $0.

The filing's explanation of responses states that the first transaction, a disposition of 81,000 shares held indirectly "By estate of Byrum W. Teekell," "represents a distribution by the Reporting Person in connection with his duties as Executor of the Estate of Byrum W. Teekell." The second transaction, an acquisition of 20,250 shares held directly, "represents shares acquired pursuant to the distribution of the Estate of Byrum W. Teekell." Both transactions are therefore attributed to the administration and distribution of that estate, with no monetary consideration changing hands.

After both transactions, the filing reports that Gray Teekell directly beneficially owns 89,501 shares of Common Stock, with no remaining indirect interest noted in the estate. The form was signed by Alessandra Maria Corona Henriques as Attorney-in-Fact on November 9, 2026. No derivative securities transactions were reported.

What Was Disclosed

Miami International Holdings, Inc. Director Teekell Judson Gray filed a Form 4 disclosing the distribution of 81,000 shares from the Estate of Byrum W. Teekell and a concurrent direct acquisition of 20,250 shares from the same estate, both at $0, leaving Gray Teekell with 89,501 direct shares.