Interactive Brokers Group, Inc. — Director's Dealing 2010

Jan 5, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Interactive Brokers Group, Inc. (IBKR)
CIK: 0001381197
Period of Report: 2009-12-31

Reporting Person: Trudeau Robert (Director, 10% Owner, May be part of a 13(d) group)
Reporting Person: HOAG JAY C (10% Owner, May be part of a 13(d) group)
Reporting Person: KIMBALL RICK (10% Owner, May be part of a 13(d) group)
Reporting Person: DREW JOHN (10% Owner, May be part of a 13(d) group)
Reporting Person: REYNOLDS JON Q JR (10% Owner, May be part of a 13(d) group)
Reporting Person: GRIFFITH WILLIAM (10% Owner, May be part of a 13(d) group)
Reporting Person: Marshall Christopher P (May be part of a 13(d) group)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-12-31	Common Stock	A	4233	—	Acquired	4233	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	1487970	Indirect
Common Stock	2289635	Indirect
Common Stock	1189061	Indirect
Common Stock	33334	Indirect

Footnotes

F1: Represents a grant of restricted stock which will vest in five equal annual installments, beginning on December 31, 2010.

F2: These shares of restricted stock are directly held by Robert W. Trudeau. Mr. Trudeau has the sole voting and dispositive power over the shares; however, TCV VI Management, L.L.C. ("Management VI") and TCV VII Management, L.L.C. ("Management VII") collectively own 100% of the pecuniary interest therein. Mr. Trudeau, Jay C. Hoag, Richard H. Kimball, John L. Drew, Jon Q. Reynolds, Jr., and William J.G. Griffith IV (collectively, the "TCM VI Members") are members of Management VI and each of the TCM VI Members and Christopher P. Marshall (collectively, the "TCM VII Members") are members of Management VII, but each disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein.

F3: These securities are directly held by TCV VI, L.P. The TCM VI Members are Class A Members of Technology Crossover Management VI, L.L.C. ("TCM VI"), which is the sole general partner of TCV VI, L.P. The TCM VI Members and TCM VI may be deemed to beneficially own the securities held by TCV VI, L.P., but the TCM VI Members and TCM VI disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

F4: These securities are directly held by TCV VII, L.P. The TCM VII Members are Class A Directors of Technology Crossover Management VII, Ltd. ("TCM VII") and limited partners of Technology Crossover Management VII, L.P. ("TCM VII LP"). TCM VII is the general partner of TCM VII LP, which is the general partner of TCV VII, L.P. The TCM VII Members, TCM VII and TCM VII LP may be deemed to beneficially own the securities held by TCV VII, L.P., but the TCM VII Members , TCM VII and TCM VII LP disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

F5: These securities are directly held by TCV VII (A), L.P. The TCM VII Members are Class A Directors of TCM VII and limited partners of TCM VII LP. TCM VII is the general partner of TCM VII LP, which is the general partner of TCV VII (A), L.P. The TCM VII Members, TCM VII and TCM VII LP may be deemed to beneficially own the securities held by TCV VII (A), L.P., but the TCM VII Members, TCM VII and TCM VII LP disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

F6: These securities are directly held by TCV Member Fund, L.P. ("TCV MF"). The TCM VII Members are Class A Directors of TCM VII, which is a general partner of TCV MF, and limited partners of TCV MF. The TCM VI Members are Class A Members of TCM VI, which is also a general partner of TCV MF. The TCM VII Members, TCM VII, the TCM VI Members and TCM VI may be deemed to beneficially own certain of the securities held by TCV MF, but the TCM VII Members, TCM VII, the TCM VI Members and TCM VI disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.