Form 4: Interactive Brokers Vice Chairman Sells Shares

Interactive Brokers Vice Chairman Earl H Nemser sold 245,000 Class A common stock shares in pre-planned transactions in January 2026.

Summary

• Earl H Nemser, Vice Chairman and Director of Interactive Brokers Group, Inc., reported the sale of Class A common stock.
• The transactions were executed under a Rule 10b5-1(c) plan, indicating pre-scheduled sales.
• On January 22, 2026, 100,000 shares were sold at a weighted average price of $76.81.
• On January 23, 2026, two separate transactions occurred: 84,935 shares were sold at $77.65, and 60,065 shares were sold at $78.14.
• The total number of shares sold across these three transactions is 245,000.
• Following these sales, Nemser indirectly beneficially owns 155,000 Class A common stock shares through EN Holdings LLC.
• Additionally, Nemser directly beneficially owns 451,830 Class A common stock shares, which includes vested and unvested restricted stock units.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While it's an insider sale, the explicit mention of a Rule 10b5-1(c) plan indicates a pre-scheduled transaction, which typically carries less negative weight than an unplanned sale.

Positives

• The transactions were made pursuant to a Rule 10b5-1(c) plan, which provides an affirmative defense against insider trading allegations by demonstrating that the sales were pre-scheduled and not based on material non-public information.

Negatives

• Insider selling, even when pre-planned, can sometimes be perceived by the market as a lack of confidence, although the 10b5-1 plan mitigates this concern.

Industry Context

Insider transactions are a routine disclosure in the financial industry, providing transparency into the holdings and trading activities of company executives and directors. The use of a 10b5-1 plan is a common practice among executives to manage personal liquidity and diversification while adhering to SEC regulations.

Corporate Governance

Related Party Transactions

• Indirect beneficial ownership of shares is held by EN Holdings LLC, which is owned by the Reporting Person and his affiliates.

Stakeholder Impact

• Shareholders may note the insider sale, but the pre-planned nature under a 10b5-1 plan suggests it is a personal financial management decision rather than a reflection of company performance or outlook.

Key Dates

Recommendation

The insider sale by Vice Chairman Earl H Nemser, while significant in volume, was conducted under a pre-arranged Rule 10b5-1(c) plan. This indicates a planned liquidity event or portfolio rebalancing rather than a reaction to new, non-public information about Interactive Brokers. Therefore, it does not necessarily signal a fundamental change in the company's prospects that would warrant a 'buy' or 'sell' recommendation based solely on this filing. Investors should 'hold' and consider this transaction in the broader context of the company's financial performance and market conditions.

Keywords

Interactive Brokers, IBKR, Earl H Nemser, Insider Sale, Form 4, Stock Transaction, 10b5-1 Plan, Class A Common Stock