Earl H Nemser $IBKR SEC Form 4 Insider Trading

Earl H Nemser has filed a total of 43 insider trades in $IBKR since 2021. Their most recent trade was a sale of 20,521 shares, made on Aug 14, 2025. Their largest trade was a sale of 153,000 shares, made on Aug 12, 2025. We estimate that they now own 827,812 shares of $IBKR, worth an estimated $51.9 million.

Insider Trading at $IBKR

There have been a total of 1175 insider trades reported at $IBKR since 2021, with 135 shares purchased and 11.4 million shares sold. The most active insider traders in $IBKR stock have been Thomas Peterffy, Thomas Aj Frank, and Paul Jonathan Brody. The most recent trade was a sale of 57,851 shares reported by Paul Jonathan Brody (Chief Financial Officer), made on Sep 11, 2025.

$IBKR Executives and Stock Owners with Insider Trades

• Thomas Peterffy, Chairman

• Thomas Aj Frank, Chief Information Officer

• Paul Jonathan Brody, Chief Financial Officer

• Earl H Nemser, Vice Chairman

• Denis Mendonca, Chief Accounting Officer

*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.