MIAMI INTERNATIONAL (NASDAQ: MIAX) EVP sells 28K shares after option exercise
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
MIAMI INTERNATIONAL HOLDINGS, INC. executive Barbara J. Comly, EVP, General Counsel and Corporate Secretary, exercised options and sold shares of common stock. She exercised nonqualified stock options for 28,000 shares at $12.00 per share and sold 28,000 shares in an open-market transaction at a weighted average price of $41.22 per share.
The sale was made under a previously established Rule 10b5-1 trading plan adopted on December 18, 2025. Following these transactions, Comly directly holds 882,984 shares of common stock, indicating that the sale represents a small portion of her overall stake.
Positive
- None.
Negative
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Insider Trade Summary 10b5-1
Net Seller: 28,000 shares ($1,154,160)
Net Sell
3 txns
Insider
Comly Barbara J.
Role
EVP, GC & Corporate Secretary
Sold
28,000 shs ($1.15M)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Nonqualified Stock Option (Right to Buy) | 28,000 | $0.00 | -- |
| Exercise | Common Stock | 28,000 | $12.00 | $336K |
| Sale | Common Stock | 28,000 | $41.22 | $1.15M |
Holdings After Transaction:
Nonqualified Stock Option (Right to Buy) — 28,000 shares (Direct);
Common Stock — 910,984 shares (Direct)
Footnotes (1)
- This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 18, 2025. This transaction was executed in multiple trades throughout the day at prices ranging from $39.79 to $41.79. 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. The options are fully vested.
Key Figures
Shares sold: 28,000 shares
Weighted average sale price: $41.22 per share
Option exercise price: $12.00 per share
+3 more
6 metrics
Shares sold
28,000 shares
Open-market sale of MIAX common stock
Weighted average sale price
$41.22 per share
Common stock sale on 2026-07-02
Option exercise price
$12.00 per share
Nonqualified stock option conversion to common stock
Options exercised
28,000 options
Nonqualified stock options fully vested and exercised
Post-transaction holdings
882,984 shares
Direct MIAX common stock ownership after transactions
Option expiration date
August 2, 2026
Expiration of exercised nonqualified stock options
Key Terms
Rule 10b5-1 Plan, Nonqualified Stock Option, weighted average sales price, fully vested
4 terms
Rule 10b5-1 Plan regulatory
"This transaction was effected pursuant to a previously established Rule 10b5-1 Plan adopted by the Reporting Person on December 18, 2025."
A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.
Nonqualified Stock Option financial
"Nonqualified Stock Option (Right to Buy)"
weighted average sales price financial
"The price reported above reflects the weighted average sales price."
fully vested financial
"The options are fully vested."
FAQ
What insider transactions did MIAX executive Barbara J. Comly report?
Barbara J. Comly reported exercising options for 28,000 MIAX common shares at $12.00 and selling 28,000 shares at a weighted average of $41.22. These same-day transactions converted option holdings into cash while maintaining a substantial remaining equity position.
What happened to Barbara J. Comly’s MIAX stock options in this filing?
Comly exercised 28,000 nonqualified stock options for MIAX common stock with a conversion price of $12.00 per share. The options were fully vested and had an expiration date of August 2, 2026, so the transaction converts derivative compensation into common shares.
What does the weighted average sales price mean in Barbara J. Comly’s MIAX trade?
The weighted average price of $41.22 reflects multiple MIAX share sales between $39.79 and $41.79 throughout the day. It represents the average price across all 28,000 shares sold, weighted by the number of shares at each execution price.