Learn more. Interactive Brokers Group ( IBKR ) - FREE Research Report Nemser Earl H who is Vice Chairman at Interactive Brokers Group sold 14,524 shares at $24.32 on Dec. 23, 2013. Following this transaction, the Vice Chairman owned 286,840 shares meaning that the stake was reduced by 4.82% with the 14,524-share transaction. Brody Paul Jonathan who is Chief Financial Officer at Interactive Brokers Group sold 8,075 shares at $24.32 on Dec. 23, 2013. Following this transaction, the Chief Financial Officer owned 159,476 shares meaning that the stake was reduced by 4.82% with the 8,075-share transaction. Galik Milan who is SVP Software Development at Interactive Brokers Group sold 2,000 shares at $24.31 on Dec. 23, 2013. Following this transaction, the SVP Software Development owned 727,604 shares meaning that the stake was reduced by 0.27% with the 2,000-share transaction. The shares most recently traded at $24.49, up $0.18, or 0.75% since the insider transaction.