Stock Trading History of Harris Lawrence E

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Harris Lawrence E since year 2005. The trader's CIK number is 1406586. At the time of this reporting, Harris Lawrence E is the Director of Interactive Brokers Group, Inc. . (stock ticker symbol IBKR). See this page for all insider trading activities at Interactive Brokers Group, Inc. .

Stock purchases, sales, and option exercises reported by insider *Harris Lawrence E* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-12-27	IBKR	Interactive Brokers Group, Inc.	Purchase	1,000	18.65	18,650
2008-10-27	IBKR	Interactive Brokers Group, Inc.	Purchase	4,000	18.37	73,470
2008-08-04	IBKR	Interactive Brokers Group, Inc.	Purchase	5,000	27.10	135,500
2007-07-30	IBKR	Interactive Brokers Group, Inc.	Purchase	5,000	24.15	120,750

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Harris Lawrence E (Director of Interactive Brokers Group, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.