Eric Sites lists MIAX stock option holdings
Miami International Holdings, Inc. director Eric Sites filed an initial ownership report showing fully vested nonqualified stock options linked to the company’s shares.
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Form Type
3
Rhea-AI Filing Summary
Miami International Holdings, Inc. director Eric Sites filed an initial ownership report showing fully vested nonqualified stock options linked to the company’s shares. The options cover 9,174 underlying shares at an exercise price of $20.0000, 9,554 shares at $19.8400, 7,500 shares at $25.9800, and 7,500 shares at $16.1400, all expiring on March 26, 2030. A footnote notes that Sites was elected to the Board of Directors on April 24, 2026 and that Horizon Kinetics Asset Management LLC separately reported beneficial ownership of 11,162,809 shares on an amended Schedule 13D.
Insider Trade Summary
4 transactions reported
Mixed
4 txns
Insider
Sites Eric
Role
Director
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| holding | Nonqualified Stock Option (Right to Buy) | -- | -- | -- |
| holding | Nonqualified Stock Option (Right to Buy) | -- | -- | -- |
| holding | Nonqualified Stock Option (Right to Buy) | -- | -- | -- |
| holding | Nonqualified Stock Option (Right to Buy) | -- | -- | -- |
Holdings After Transaction:
Nonqualified Stock Option (Right to Buy) — 33,728 contracts (Direct)
Footnotes (3)
- F1. These options are fully vested.
- F2. On April 24, 2026, Eric Sites, who serves as a Managing Director of Horizon Kinetics Asset Management LLC (HKAM), was elected to the Board of Directors of the Issuer. Mr. Sites does not exercise investment discretion on behalf of HKAM with respect to the securities of the Issuer.
- F3. On April 28, 2026, HKAM filed an amendment to its Schedule 13D wherein it reported beneficial ownership of 11,162,809 shares.
Key Figures
Option exercise price: $20.0000 per share
Option exercise price: $19.8400 per share
Option exercise price: $25.9800 per share
+2 more
5 metrics
Option exercise price
$20.0000 per share
Nonqualified stock option, 9,174 underlying shares, expires March 26, 2030
Option exercise price
$19.8400 per share
Nonqualified stock option, 9,554 underlying shares, expires March 26, 2030
Option exercise price
$25.9800 per share
Nonqualified stock option, 7,500 underlying shares, expires March 26, 2030
Option exercise price
$16.1400 per share
Nonqualified stock option, 7,500 underlying shares, expires March 26, 2030
Beneficial ownership
11,162,809 shares
Shares reported by Horizon Kinetics Asset Management LLC on amended Schedule 13D
Key Terms
Nonqualified Stock Option, Schedule 13D, beneficial ownership, Board of Directors, +1 more
5 terms
Nonqualified Stock Option financial
"security_title: "Nonqualified Stock Option (Right to Buy)""
A nonqualified stock option (NQSO) is a company grant that gives an individual the right to buy shares at a set price but does not meet special tax rules for incentive stock options; when exercised the difference between the market price and the exercise price is treated as ordinary income for the recipient and as a tax-deductible expense for the company. It matters to investors because NQSOs affect an employee’s after-tax proceeds, the company’s reported expenses, and potential share dilution—think of it like a cash bonus that converts into stock but is taxed as regular pay when you take it.
Schedule 13D regulatory
"HKAM filed an amendment to its Schedule 13D wherein it reported beneficial ownership"
A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.
beneficial ownership financial
"reported beneficial ownership of 11,162,809 shares"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
Board of Directors financial
"was elected to the Board of Directors of the Issuer"
The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.
fully vested financial
"These options are fully vested."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did Eric Sites report in his Form 3 for MIAX?
Eric Sites reported fully vested nonqualified stock options tied to Miami International Holdings, Inc. (MIAX) shares. The filing lists four option grants with specific exercise prices, share amounts, and a common expiration date in 2030, giving a clear view of his derivative holdings.
What are the exercise prices of Eric Sites’ MIAX stock options?
The Form 3 shows exercise prices of $20.0000, $19.8400, $25.9800, and $16.1400 per share for Eric Sites’ nonqualified stock options. These prices define the cost to acquire underlying Miami International Holdings shares before the options expire in 2030.
When do Eric Sites’ MIAX stock options expire?
All listed nonqualified stock options held by Eric Sites expire on March 26, 2030. This shared expiration date applies across the four option positions, each tied to different exercise prices and underlying share amounts in Miami International Holdings, Inc.
What does the Form 3 disclose about Horizon Kinetics and MIAX?
A footnote states that Horizon Kinetics Asset Management LLC filed an amended Schedule 13D reporting beneficial ownership of 11,162,809 MIAX shares. It also notes Eric Sites serves as a Managing Director there but does not exercise investment discretion for MIAX securities.
When was Eric Sites elected to Miami International’s Board of Directors?
Eric Sites was elected to the Board of Directors of Miami International Holdings, Inc. on April 24, 2026. The Form 3 filing coincides with this appointment and provides an initial statement of his derivative holdings through fully vested nonqualified stock options.
AI-generated analysis. How Rhea-AI works. Not financial advice.
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