Deitzel Edward 4

What Happened
Edward Deitzel, EVP, CRO and CCO of MIAMI INTERNATIONAL HOLDINGS, INC. (MIAX), exercised a total of 12,335 stock options and sold the resulting 12,335 shares across April 7–8, 2026. He paid $12.00 per share to exercise (total exercise cost $148,020) and sold the shares for aggregate proceeds of about $518,221 (sales priced roughly $42.00–$42.13 per share). The exercises and sales occurred the same days, effectively a cashless exercise and immediate sale.

Key Details

• Dates: April 7–8, 2026.
• Exercise: 12,335 options exercised (762 + 4,001 + 7,572) at $12.00/share = $148,020 total cost.
• Sales: 12,335 shares sold (same amounts) for total proceeds ≈ $518,221. Reported sale prices ranged $42.00–$42.13; one weighted average sale reported at $42.02.
• Related derivative entries: Filing also shows disposition entries for the options at $0.00 associated with the exercises.
• Footnotes: Transactions were made under a Rule 10b5-1 trading plan adopted Dec 30, 2025 (F1). Sales executed at prices ranging $42.00–$42.13; filer will provide trade-level details on request (F2). Options were fully vested (F3).
• Shares owned after the transactions: not disclosed in the supplied filing.
• Timeliness: Filing appears timely (filed Apr 9, 2026 for transactions Apr 7–8); no late‑filing flag noted.

Context
Because the insider exercised options and sold the resulting shares the same days, this is effectively a cashless exercise (exercise followed by immediate open‑market sales). The 10b5‑1 plan footnote indicates the sales were pre‑arranged under a trading plan adopted Dec 30, 2025. Options were fully vested, so the exercises did not require additional vesting. This activity is a routine insider sale following option exercise; it does not by itself indicate the insider’s view of the company’s long‑term prospects.