InsiderTrades

Form 4 for MIAX MIAMI INTERNATIONAL HOLDINGS, INC.

Accepted 2026-09-17 16:43:30 ET · period of report 2026-09-16 · accession 0002080506-26-000027 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
T 2026-09-17 16:43 2026-09-16 MIAX Brown Shelly EVP, Chief Strategy Off S - Sale $38.61 -21.2K 316.5K -6% -$819.2K

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock 2026-09-16 S D 21,217 $38.61 316,490 D — — (F1) This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 22, 2025. (F2) This transaction was executed in multiple trades throughout the day at prices ranging from $37.84 to $39.56. The price reported above reflects the weighted average sales price. The Reporting Person hereby undertakes to provide upon request to the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.