Interactive Brokers Group, Inc. — Director's Dealing 2011

Jul 27, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Interactive Brokers Group, Inc. (IBKR)
CIK: 0001381197
Period of Report: 2011-07-26

Reporting Person: Harris Lawrence E (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-07-26	Class A Common Stock	P	10000	$15.12	Acquired	57321	Direct

Footnotes

F1: This represents the average price paid for the securities, ranging from $15.07 to $15.15, in open market transactions.

F2: The total includes a grant of restricted stock of 2,321 shares granted on 12/31/2007, including 928 shares that will vest in equal installments over the next two years, starting on December 31, 2011.