MIAX Insider Sale
MIAX EVP Shelly Brown Sells Over $673,000 in Shares Under Prearranged Trading Plan
Anonymous
Miami International Holdings EVP Shelly Brown sold 16,000 shares in an open-market transaction on June 2 at an average price of $42.12, for about $673,920, under a prearranged Rule 10b5-1 trading plan. After the sale, Brown owned 325,047 shares, reflecting a roughly 4.7% decrease in holdings, and the trade was disclosed in an SEC Form 4. Earlier in the year, Brown also reported additional stock sales across April and May, with many transactions similarly tied to Rule 10b5-1 plan coverage. Other Form 4 disclosures for MIAX show continued insider equity activity, including option-related transactions with holdings updated after the trades and Rule 10b5-1 plans identified as adopted on December 30, 2025. The MIAX stock move on the day of the June 2 sale saw shares trade down to about $39.73 amid typical exchange-volume activity.
Key Points
1
Alongside the June 2 sale, Shelly Brown reported multiple other MIAX stock-sales in 2025, including: May 4 (16,000 shares at an average $47.28, total $756,480); April 8 (16,434 shares at $42.08, total $691,542.72); April 7 (900 shares at $42.00, total $37,800); and April 6 (2,357 shares at $41.33, total $97,414.81).
2
On the June 2 trading day, MIAX stock fell to about $39.73 and traded 1,614,484 shares versus an average volume of 1,325,189. The report also cited the stock’s 50-day moving average of $45.98 and 200-day moving average of $43.97, along with a market cap of about $3.77 billion and a P/E ratio of 41.38.
3
One of the accompanying Form 4 filings on StockTitan described an option-related transaction under a Rule 10b5-1 plan: a Nonqualified Stock Option (Right to Buy) for 6,000 shares, with an exercise price of $12.0000, and it listed common stock holdings after that transaction as 444,681 shares.
4
Another StockTitan Form 4 filing listed an option-related activity as well—“Stock Option (Right to Buy) — 6,313 shares”—and showed common stock holdings after the transaction as 147,625 shares, with the filing stating the transaction was made pursuant to a previously established Rule 10b5-1 plan.
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