Interactive Brokers Group, Inc. — Director's Dealing 2012

Dec 21, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Interactive Brokers Group, Inc. (IBKR)
CIK: 0001381197
Period of Report: 2012-12-19

Reporting Person: TCV VII LP (May be part of a 13(d) group)
Reporting Person: TCV VII(A) L P (May be part of a 13(d) group)
Reporting Person: Technology Crossover Management VII, Ltd. (May be part of a 13(d) group)
Reporting Person: Technology Crossover Management VII, L.P. (May be part of a 13(d) group)
Reporting Person: TCV Member Fund, L.P. (May be part of a 13(d) group)
Reporting Person: Marshall Christopher P (May be part of a 13(d) group)
Reporting Person: McAdam Timothy P (May be part of a 13(d) group)
Reporting Person: Rosenberg John C. (May be part of a 13(d) group)
Reporting Person: Yuan David (May be part of a 13(d) group)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-12-19	Common Stock	S	45793	$14.1613	Disposed	2243842	Indirect
2012-12-19	Common Stock	S	23781	$14.1613	Disposed	1165280	Indirect
2012-12-19	Common Stock	S	667	$14.1613	Disposed	32667	Indirect
2012-12-20	Common Stock	S	91586	$14.1166	Disposed	2152256	Indirect
2012-12-20	Common Stock	S	47562	$14.1166	Disposed	1117718	Indirect
2012-12-20	Common Stock	S	1333	$14.1166	Disposed	31334	Indirect

Footnotes

F1: The price reported reflects the weighted average sale price. This transaction was executed in multiple trades at prices ranging from $14.0900 to $14.3650. The Reporting Persons hereby undertake to provide upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

F2: This Form 4 is filed by more than one Reporting Person and is a joint filing with the Form 4 filed by Jay C. Hoag, Richard H. Kimball, John L. Drew, Jon Q. Reynolds, Jr. and Robert W. Trudeau (collectively, the "TCM VI Members"), TCV VI, L.P. and Technology Crossover Management VI, L.L.C. ("TCM VI") on December 21, 2012.

F3: These securities are directly held by TCV VII, L.P. Christopher P. Marshall, Timothy P. McAdam, John C. Rosenberg and David L. Yuan and each of the TCM VI Members (collectively, the "TCM VII Directors") are Class A Directors of Technology Crossover Management VII, Ltd. ("TCM VII") and limited partners of Technology Crossover Management VII, L.P. ("Management VII"). TCM VII is the general partner of Management VII, which is the general partner of TCV VII, L.P. The TCM VII Directors, TCM VII and Management VII may be deemed to beneficially own the securities held by TCV VII, L.P., but the TCM VII Directors, TCM VII and Management VII disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

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

F5: These securities are directly held by TCV Member Fund, L.P. ("TCV MF"). The TCM VII Directors 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 Directors, 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 Directors, TCM VII, the TCM VI Members and TCM VI disclaim beneficial ownership of such securities except to the extent of their pecuniary interest therein.

F6: The price reported reflects the weighted average sale price. This transaction was executed in multiple trades at prices ranging from $13.9700 to $14.2300. The Reporting Persons hereby undertake to provide upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.