4/A: Interactive Brokers Vice Chairman Amends Insider Stock Filing, Corrects 10b5-1 Plan Indication

Interactive Brokers Group, Inc. Vice Chairman Earl H. Nemser filed an amended Form 4 to correct an inadvertent error regarding a Rule 10b5-1(c) transaction indication for a recent stock disposition.

Summary

• Earl H. Nemser, Vice Chairman and Director of Interactive Brokers Group, Inc. (IBKR), filed an amended Form 4 (Form 4/A) on June 3, 2025.
• The amendment corrects an error in the original Form 4 filing where the Rule 10b5-1(c) Transaction Indication box was inadvertently checked, incorrectly representing that the transaction was executed pursuant to a Rule 10b5-1(c) trading plan.
• The original transaction involved the disposition of 5,178 shares of Class A common stock on May 9, 2025, with a deemed execution date of June 2, 2025.
• The disposition was for tax liability purposes (Code 'F') at a price of $185.6 per share, which was the closing price on the vesting date.
• Following the reported transaction, Mr. Nemser directly beneficially owns 107,078 shares of Class A common stock, which includes vested 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: Neutral. The document reports a routine insider stock disposition for tax purposes and an administrative correction to a previous filing. Neither event is inherently positive or negative for the company's operational or financial performance.

Positives

• The company and its insider are proactively correcting filing errors, demonstrating commitment to accurate regulatory disclosures.

Negatives

• The initial filing contained an administrative error regarding the Rule 10b5-1(c) indication, requiring an amendment.

Future Outlook

This filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Management Comments

• "This amended Form 4 corrects an error in the original Form 4 filing where the Rule 10b5-1(c) Transaction Indication box was inadvertently checked, incorrectly representing that the transaction was executed pursuant to Rule 10b5-1(c) trading plan."

Industry Context

This is a routine insider transaction filing and amendment, common across all publicly traded companies, and does not provide specific insights into broader industry trends for the financial services or brokerage sector beyond the general regulatory compliance environment.

Corporate Governance

Related Party Transactions

• Indirect beneficial ownership of 100,000 shares by EN Holdings LLC, which is owned by the reporting person (Earl H. Nemser) and his affiliates.

Stakeholder Impact

• Shareholders: Provides updated and corrected information on insider stock ownership and transactions, contributing to market transparency.
• Regulatory Authorities: Demonstrates compliance and responsiveness in correcting filing errors.

Key Dates

Keywords

Interactive Brokers Group, IBKR, Form 4/A, Insider Transaction, Beneficial Ownership, Earl H. Nemser, Class A Common Stock, SEC Filing, Rule 10b5-1, Stock Disposition