Form 4: Interactive Brokers Chief Accounting Officer Reports Routine Stock Disposition for Tax Purposes

Denis Mendonca, Chief Accounting Officer of Interactive Brokers Group, Inc. (IBKR), reported the disposition of 2,467 shares of Class A common stock to cover tax liabilities related to vested restricted stock units.

Summary

• Denis Mendonca, the Chief Accounting Officer of Interactive Brokers Group, Inc. (IBKR), filed a Form 4.
• The filing reports a transaction involving the disposition of 2,467 shares of Class A common stock.
• This disposition occurred on May 9, 2025, with a deemed execution date of June 2, 2025.
• The shares were disposed of at a price of $185.6 per share, which was the closing price on the vesting date.
• The transaction code 'F' indicates that the shares were withheld by the issuer to satisfy tax withholding obligations upon the vesting of restricted stock units (RSUs).
• Following this transaction, Mr. Mendonca beneficially owns 36,268 shares of Class A common stock, which includes both vested restricted stock units and unvested restricted stock units awarded under the company's amended 2007 Stock Incentive Plan.

Sentiment

Score: 5

Explanation: The sentiment is neutral as this is a routine and expected insider transaction related to equity compensation and tax withholding, with no direct operational or strategic implications for the company.

Positives

• The transaction reflects the vesting of restricted stock units, indicating that the company's compensation plan is functioning as intended and that an executive is receiving equity compensation.
• The beneficial ownership of 36,268 shares by the Chief Accounting Officer demonstrates continued alignment of management's interests with shareholders.

Negatives

• The disposition of 2,467 shares, even for tax purposes, represents a slight reduction in direct insider ownership.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This filing is a routine insider transaction report (Form 4) specific to an individual executive's equity compensation and tax obligations. It does not provide information on broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: A very minor, negligible dilution effect from the vesting of RSUs, which is a standard part of executive compensation. The disposition for tax purposes does not reflect a change in investment conviction.

Key Dates

Keywords

Interactive Brokers, IBKR, Form 4, Insider Transaction, Stock Ownership, Restricted Stock Units, RSU, Tax Withholding, Denis Mendonca, Chief Accounting Officer