Form 4: Interactive Brokers Vice Chairman Earl Nemser Reports Routine Stock Disposition for Tax Purposes

Interactive Brokers Group, Inc. Vice Chairman and Director Earl H. Nemser reported the disposition of 5,178 shares of Class A common stock for tax withholding purposes, a transaction executed under a Rule 10b5-1 plan.

Summary

• Earl H. Nemser, Vice Chairman and Director of Interactive Brokers Group, Inc. (IBKR), reported a change in beneficial ownership of Class A common stock.
• On May 9, 2025, Nemser disposed of 5,178 shares of Class A common stock at a price of $185.6 per share.
• This disposition was coded as "F," indicating payment of tax liability by withholding securities.
• The transaction was made pursuant to a Rule 10b5-1(c) contract, instruction, or written plan.
• Following this transaction, Mr. Nemser directly beneficially owns 107,078 shares of Class A common stock, which includes vested restricted stock units and unvested restricted stock units awarded under the 2007 Stock Incentive Plan.
• Additionally, 100,000 shares are indirectly beneficially owned by EN Holdings LLC, an entity owned by Mr. Nemser and his affiliates.

Sentiment

Score: 5

Explanation: The filing reports a routine insider transaction for tax withholding purposes, which is a neutral event and does not indicate positive or negative sentiment regarding the company's performance or outlook.

Positives

• The disposition of shares was for tax withholding purposes, which is a routine event associated with the vesting of equity awards, indicating that previously granted equity compensation has vested.
• The transaction was conducted under a Rule 10b5-1 plan, demonstrating a pre-arranged and compliant approach to insider stock transactions.

Negatives

• No specific negative implications for the company's operations or financial health are indicated by this routine tax-related stock disposition.

Future Outlook

NA

Industry Context

This Form 4 filing is a routine disclosure of an insider stock transaction, common across all publicly traded companies, and does not provide specific insights into broader industry trends or competitive dynamics within the brokerage or financial services sector.

Related Party Transactions

• The indirect beneficial ownership of 100,000 shares by EN Holdings LLC is disclosed, an entity owned by the reporting person and his affiliates. This is a standard disclosure for insider ownership structures.

Stakeholder Impact

• Shareholders: Minimal impact. This is a routine tax-related disposition of shares by an insider and does not signal a change in company fundamentals or management's confidence.
• Employees, Customers, Suppliers, Creditors: No direct impact indicated by this filing.

Key Dates

Keywords

Interactive Brokers, IBKR, Form 4, Insider Transaction, Stock Ownership, Earl H. Nemser, Class A Common Stock, Beneficial Ownership, Rule 10b5-1, Tax Withholding