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

Jan 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Interactive Brokers Group, Inc. (IBKR)
CIK: 0001381197
Period of Report: 2010-12-31

Reporting Person: Galik Milan (Director, SVP Software Development)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-31	Class A Comon Stock	A	174342	—	Acquired	678846	Direct

Footnotes

F1: This represents a grant of restricted stock that will vest 10% on 5/9/2011 and 15% on each of the first six anniversaries of 5/9/2011.

F2: These shares represent the aggregate number of shares of restricted stock from awards granted on May 9, 2007, December 31, 2007, December 31, 2008, December 31, 2009 and December 31, 2010, less vested shares that were sold for withholding tax purposes.