MIAX Director Teekell Sells 3,000 Shares for $137,370

What Happened Teekell Judson Gray, a director of Miami International Holdings, sold 3,000 shares of MIAX common stock in an open‑market transaction on August 4, 2026. The weighted‑average sales price was $45.79, generating total proceeds of $137,370. The sale was executed in multiple trades throughout the day with prices ranging from $45.13 to $46.56.

Key Details

• Transaction date: August 4, 2026
• Shares sold: 3,000
• Weighted-average price: $45.79; price range: $45.13–$46.56 (multiple trades)
• Total proceeds: $137,370
• Method: Open‑market sale effected pursuant to a Rule 10b5-1 plan adopted Dec 17, 2025 (Footnote F1)
• Filing notes: Reporting person states they can provide the breakdown of individual trade sizes/prices on request (Footnote F2)
• Shares owned after transaction: Not disclosed in the filing
• Filing date: Report filed Aug 6, 2026 (reporting period Aug 4, 2026); no late‑filing flag indicated

Context The sale was made under a pre‑established 10b5‑1 trading plan, which typically schedules trades in advance and is common for insiders managing routine liquidity needs. This was a sale (not a purchase or option exercise) and should be viewed as a planned disposition rather than a direct statement about the director’s view of the company.