MIAMI INTERNATIONAL HOLDINGS, INC. 8-K

What Happened
Miami International Holdings, Inc. (MIAX) filed an 8-K reporting that director Lee Becker informed the board on March 24, 2026 that he will not stand for reelection at the 2026 Annual Meeting; he will remain on the board until that meeting when his term expires. On March 25, 2026 the board, following the Nominating and Corporate Governance Committee recommendation, elected Jill E. Sommers to fill an existing board vacancy effective March 25, 2026.

Key Details

• Lee Becker notified the board on March 24, 2026 he will not seek reelection; his decision was not due to any disagreement with the company’s operations, policies or practices.
• Jill E. Sommers was elected effective March 25, 2026 and will serve until the 2026 Annual Meeting or until a successor is chosen.
• Ms. Sommers has not been assigned to any board committees and will be compensated the same as other non-employee directors.
• No related-party transactions or special arrangements were disclosed; she entered into the company’s standard director indemnification agreement (form previously filed in the company’s July 18, 2025 Form S-1).

Why It Matters
Board membership changes affect corporate governance and oversight. This filing signals a planned, non-contentious board transition with a new independent director joining before the 2026 Annual Meeting. The company did not disclose any material financial impact from these changes. Investors should note the update to board composition and monitor any future committee assignments or disclosures about the new director’s background and contributions.