Interactive Brokers (IBKR) Vice Chairman Earl Nemser Receives Award

What Happened
Earl H. Nemser, Vice Chairman and Director of Interactive Brokers Group, acquired 803,568 shares on 2026-07-31 in a grant/award-type transaction (Code A). The filing reports a per-share price of $87.99 (the issuer's closing price on 7/31/2026), for a total value of approximately $70,705,948. The award includes Class A common stock attributable to vested restricted stock units and unvested restricted stock units under the amended 2007 Stock Incentive Plan.

Key Details

• Transaction date: 2026-07-31; filing date: 2026-08-04 (file appears to be within the SEC’s 2-business-day Form 4 timing window).
• Shares acquired: 803,568; price used: $87.99 (closing price on 7/31/2026); reported total value ≈ $70,705,948.
• Post-transaction shares owned: Not specified in the provided filing excerpt.
• Footnotes of note:
  • F1: Securities were acquired by a limited liability company owned by the reporting person and affiliates in a partial redemption of its interest in IBG Holdings LLC; those securities were acquired by IBG Holdings LLC from Interactive Brokers immediately prior to the redemption in exchange for membership interests in IBG LLC.
  • F2: The $87.99 per-share figure is the issuer’s closing price on 7/31/2026.
  • F3: The reported amount includes Class A stock attributable to vested RSUs and unvested RSUs awarded under the amended 2007 Stock Incentive Plan.
• Transaction code: A = Award/Grant.

Context
This was an acquisition/award rather than a sale; such inward transactions can be more informative to investors than routine sales, but the filing does not state any intent or investment decision by the insider. The transaction involved an LLC redemption/exchange structure rather than a simple open-market purchase—see F1 for details.