• Miami International Holdings EVP and CIO Douglas M. Schafer Jr. sold 8,000 common shares at $35.06 each on October 22, 2026.
• He exercised nonqualified stock options for 8,000 common shares at $12 each on the same date.
• Direct common stock holdings totaled 387,414 shares following the transactions; 147,334 nonqualified stock options remained.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Miami International Holdings Inc. published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0002079445-26-000019), on October 26, 2026, and is solely responsible for the information contained therein.