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

Aug 3, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Interactive Brokers Group, Inc. (IBKR)
CIK: 0001381197
Period of Report: 2011-08-01

Reporting Person: Harris Lawrence E (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-08-01	Class A Common Stock	P	5000	$14.98	Acquired	62321	Direct

Footnotes

F1: This represents the average price paid for the securities, ranging from $14.96 to $15.00, in open market transactions.

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