Key Points
This disposition of 20,000 shares on August 4 generated total proceeds of $918,000.
The activity consisted of a same-day exercise and sale of stock options, with no indirect holdings reported.
The sale was executed under a Rule 10b5-1 plan established on March 9, indicating a pre-planned liquidity event.
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Harish Jayabalan, EVP, CISO and CRO of Miami International Holdings, Inc. (NYSE:MIAX), reported a sale of 20,000 shares of common stock on August 4, according to an SEC Form 4 filing.
Transaction summary
| Metric | Value |
|---|---|
| Shares sold | 20,000 |
| Transaction value | $918,000 |
| Post-transaction shares (directly held) | 78,065 |
| Post-transaction value | $3.54 million |
Transaction value based on SEC Form 4 weighted average sale price ($45.90); post-transaction value based on the August 4 market close ($45.34).
Key questions
- What were the mechanics of this equity disposition?
The transaction involved the exercise of 20,000 stock options at strike prices of $12 and $15.22 per share. The resulting shares were immediately sold at a weighted average price of $45.90, capturing the spread between the exercise price and the current market value. - What is the status of the insider's remaining equity position?
Following the sale, the reporting owner retains direct ownership of 78,065 shares of common stock. Additionally, the insider holds 17,598 derivative securities in the form of fully vested options, ensuring continued exposure to the company's equity performance. - How does the execution price compare to recent market levels?
The weighted average sale price of $45.90 was achieved during a session that closed at $45.34 on the transaction date. As of the August 5 market close, the stock was priced at $45.96.
Company Overview
| Metric | Value |
|---|---|
| Share Price (as of market close 2026-08-05) | $45.96 |
| Market Capitalization | $4.4 billion |
| Revenue (TTM) | $1.5 billion |
| Net Income (TTM) | $142.3 million |
Company Snapshot
- Miami International Holdings operates a diversified marketplace ecosystem that provides trading venues for options, futures, and cash equities, generating revenue through transaction fees, market data services, and technology licensing across its MIAX Options, MIAX Pearl, MIAX Emerald, MIAX Sapphire, MIAX Pearl Equities, and MIAX Futures platforms.
- The company generates revenue through a transaction-based model, capturing fees from trading volume across its multiple exchange platforms, supplemented by ancillary revenue streams, including market data dissemination, connectivity services, and regulatory fees.
- The company serves institutional investors, retail traders, market makers, and broker-dealers seeking access to diversified trading venues for options, equities, and futures products in the United States capital markets.
Miami International Holdings is a mid-cap financial services infrastructure provider with a $4.4 billion market capitalization that operates as a critical marketplace operator in U.S. capital markets. The company's diversified platform architecture across options, equities, and futures segments positions it to capture trading volume across multiple asset classes. MIAX maintains competitive advantages through its technology infrastructure, regulatory approvals across multiple asset classes, and established relationships with market participants seeking alternative execution venues.
What this transaction means for investors
What’s worth noting here is that multiple MIAX executives, not just Jayabalan, exercised options and sold on the same day this month, all at prices near $46. Jayabalan's piece came from options struck at $12 and $15.22, effectively old grants converted to cash, and he kept about 78,000 shares. That’s certainly not a signal to read too deeply into.
More importantly, the window they sold into followed a record quarter. MIAX grew second-quarter net revenue 35% to $141 million as options volume climbed 25% to 11 million contracts a day, with adjusted margins above 54%, and it cleared a long-running Nasdaq lawsuit with a settlement it has since paid. CEO Thomas Gallagher said the performance was driven by options and the new Bloomberg futures suite. So ultimately, the selling cluster reads as scheduled housekeeping, but it is worth noticing that MIAX's options market share slipped slightly even as volume surged, to 16.5% from 16.7%. The company is growing with the options boom rather than taking ground from rivals, and that distinction matters more than insiders selling on plan.
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Jonathan Ponciano has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Miami International. The Motley Fool has a disclosure policy.
The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.
