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Interactive Brokers Group, Inc. (IBKR) Vice Chairman and director Earl H. Nemser reported several sales of Class A common stock executed through EN Holdings LLC. The Form 4 discloses those disposals and the resulting beneficial ownership figures held by EN Holdings LLC.
On 08/06/2025 Nemser sold 12,641 shares at a weighted average price of $63.47 and 200 shares at $64.16. On 08/07/2025 he sold 12,400 shares at a weighted average price of $63.94 and 441 shares at $64.35, a total of 25,682 shares sold. The filing lists the amounts of Class A shares beneficially owned following each reported transaction as 694,309, 694,109, 681,709, and 681,268, respectively.
Footnotes state that EN Holdings LLC is owned by the reporting person and his affiliates and that the reported prices are weighted averages across price ranges. The filing also notes 427,812 shares attributable to vested and unvested restricted stock units awarded under the company’s 2007 Stock Incentive Plan.
Form 4 filed 08/06/2025 reports insider sales by Earl H. Nemser (Vice Chairman and Director) of Interactive Brokers Group, Inc. (IBKR).
Nemser, through EN Holdings LLC, sold 12,841 Class A shares on 08/04/2025 at a weighted-average price of $64.54 and sold 11,041 and 1,800 Class A shares on 08/05/2025 at weighted-average prices of $63.64 and $64.84, respectively, for a total of 25,682 shares sold. Following these transactions, the filing shows EN Holdings LLC beneficially owning 706,950 Class A shares (down from 719,791). The filing also discloses direct ownership of 427,812 Class A shares attributable to vested and unvested restricted stock units under the amended 2007 Stock Incentive Plan. Footnotes provide transaction price ranges and offer to supply detailed breakdowns on request.
Interactive Brokers Group (IBKR) Form 4 highlights: Vice-Chairman & Director Earl H. Nemser, through affiliate EN Holdings LLC, sold 39,786 Class A shares on 30-Jul-2025 in two open-market transactions:
- 32,386 shares at a weighted average price of $66.32
- 7,400 shares at a weighted average price of $66.64
Following the sales, Nemser indirectly owns 360,114 shares via EN Holdings LLC and directly holds 427,812 shares (including vested and unvested RSUs), leaving him with an estimated total stake of 787,926 shares. The filing does not state that the trades were made under a Rule 10b5-1 trading plan.
The transactions reduce Nemser’s indirect position by roughly 10% but leave his overall economic interest substantial, suggesting liquidity rather than exit. No derivative activity was reported.
Insider: Earl H. Nemser, Vice Chairman & Director of Interactive Brokers Group (IBKR).
Transaction: On 07/28/2025 Nemser executed an open-market sale (Code S) of 100 Class A shares at $65.90 per share through his affiliate EN Holdings LLC.
Post-transaction holdings: 399,900 Class A shares held indirectly via EN Holdings LLC and 427,812 shares held directly (vested & unvested RSUs), totaling roughly 827,712 shares.
The sale represents <0.01 % of both IBKR’s outstanding shares and Nemser’s reported stake, signalling no meaningful change in ownership or control. No derivative security activity was disclosed.
Interactive Brokers Group (IBKR) Vice Chairman and Director Earl H. Nemser reported significant changes in beneficial ownership following two key events:
1. A stock donation of 500 shares of Class A common stock to a nonprofit organization on June 23, 2025, at $0 per share.
2. A four-for-one stock split effective June 17, 2025, which affected Nemser's holdings as follows:
- Direct ownership increased by 321,234 shares to a total of 427,812 shares
- Indirect ownership through EN Holdings LLC increased by 300,000 shares to 400,000 shares
Following these transactions, Nemser's total beneficial ownership stands at 827,812 shares, held through both direct ownership (427,812 shares) and indirect ownership via EN Holdings LLC (400,000 shares). The holdings include vested and unvested restricted stock units awarded under the amended 2007 Stock Incentive Plan.
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