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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1381197	Interactive Brokers Group Inc.	IBKR	Security Brokers, Dealers & Flotation Companies (6211)	300390693

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1602970	Echinus Advisors, Llc	63 Crosby Street 4Th Floor New York NY 10012		Yes	No	No	Yes
1772442	Philip Uhde	63 Crosby Street, 4Th Floor New York NY 10012		Yes	No	No	Yes

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Class A Common Stock, $0.01 Par Value Per Share	Disposition	2020-04-23	2,409,873	$0.00	1,652	No	4	J	Indirect	See footnote
Common Stock	Disposition	2020-04-23	1,652	$39.20	0	No	4	S	Indirect	See footnote

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	J	Indirect	See footnote
No	4	S	Indirect	See footnote

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	108,844	Direct

Footnotes

These securities were held for the account of Echinus Partners, LP, a Delaware limited partnership (the "Echinus Fund"). Echinus Advisors, LLC, a Delaware limited liability Company ("Echinus"), serves as the investment manager to the Echinus Fund. Mr. Philip Uhde ("Mr. Uhde") is the manager and majority controlling person of Echinus. Each Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein, if any.
On April 23, 2020, the securities were distributed pro rata to the partners of the Echinus Fund (the "Distribution").
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.075 to $39.33, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
Mr. Uhde received 108,844 shares in the Distribution which he now holds directly.