MIAMI INTERNATIONAL HOLDINGS, INC.: EVP and CIO Douglas M. Schafer Jr sold 8,000 shares

What happened Douglas M. Schafer Jr, EVP and CIO, exercised options to acquire 8,000 shares at $12.00 per share for $96,000 on Oct 22, 2026, and sold 8,000 shares in an open-market sale at a weighted average price of $35.06 per share for proceeds of $280,480. The filing also reports a derivative disposition of 8,000 shares with a $0.00 price on the same date.

Key details

• Transaction date: Oct 22, 2026. Exercise price: $12.00 per share (cost $96,000). Sale weighted average price: $35.06 per share (proceeds $280,480). Sale trades ranged $35.00 to $35.14 (footnote F2).
• Shares owned after the transaction: not reported in the filing provided here.
• Footnotes: the sale was effected under a previously established Rule 10b5-1 plan adopted Dec 16, 2025 (F1); the filing discloses the weighted average sale price and offers to provide trade-by-trade details on request (F2); the options were fully vested (F3).
• Filing timeliness: reported on Oct 26, 2026, for an Oct 22, 2026 transaction (filing date is within the two business-day Form 4 reporting window).

Why it may matter

• The filing shows options were exercised and the resulting shares were sold the same day, consistent with a cashless exercise where exercised shares are sold immediately.
• For derivative transactions, the filing lists an exercise/conversion and a derivative disposition; no additional transaction motive is provided. A filing does not show why the insider traded or why the company acted.