IBKR

SEC source: 0001567619-21-000758 · doc1.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,470,150

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.35 to $62.34. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (3) - (9) to this Form 4.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-21-000338 · doc1.xml · nonDerivative · entry 4

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,460,182

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.03 to $61.59.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-21-000338 · doc1.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,470,689

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.03 to $61.02.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-21-000332 · doc1.xml · nonDerivative · entry 4

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 156,800

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.03 to $61.59.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-21-000332 · doc1.xml · nonDerivative · entry 3

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 158,272

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.03 to $61.02.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-21-000497 · doc1.xml · nonDerivative · entry 2

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,381,111

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.03 to $61.58.

SEC source: 0001567619-21-000497 · doc1.xml · nonDerivative · entry 1

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,389,130

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.03 to $61.02. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (2) - (5) to this Form 4.

SEC source: 0001567619-21-000039 · doc1.xml · nonDerivative · entry 4

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,396,211

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.84 to $61.14.

SEC source: 0001567619-21-000039 · doc1.xml · nonDerivative · entry 3

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,404,846

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.84 to $60.83.

SEC source: 0001567619-21-000338 · doc1.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,478,519

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.84 to $61.14.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-21-000338 · doc1.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,487,620

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.84 to $60.83. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (3) - (6) to this Form 4.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-21-000332 · doc1.xml · nonDerivative · entry 2

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 159,358

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.84 to $61.14.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-21-000332 · doc1.xml · nonDerivative · entry 1

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 160,631

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.84 to $60.83. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (4) - (7) to this Form 4.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-21-000739 · doc1.xml · nonDerivative · entry 1

Yuen Nicole · CIK 0001818969 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,232

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest in five equal installments, beginning December 31, 2021.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest in five equal installments, beginning December 31, 2021.

F2 · balance_after: This amount includes unvested restricted stock units that were awarded under the Plan.

SEC source: 0001567619-21-000757 · doc1.xml · nonDerivative · entry 1

Peterffy William · CIK 0001812281 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,232

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest in five equal installments, beginning December 31, 2021.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest in five equal installments, beginning December 31, 2021.

F2 · balance_after: This amount includes unvested restricted stock units that were awarded under the Plan.

SEC source: 0001567619-21-000733 · doc1.xml · nonDerivative · entry 1

Galik Milan · CIK 0001391404 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,083,515

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan.

SEC source: 0001567619-21-000730 · doc1.xml · nonDerivative · entry 1

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,846

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan.

SEC source: 0001567619-21-000726 · doc1.xml · nonDerivative · entry 1

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 698,113

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F1 · acquired: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan.

SEC source: 0001567619-21-000723 · doc1.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,477,615

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-21-000716 · doc1.xml · nonDerivative · entry 1

Mendonca Denis · CIK 0001665345 · Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,898

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 10% on or about 5/9/2021 and 15% on each of the first six anniversaries of 5/9/2021.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan.

SEC source: 0001567619-20-021761 · doc1.xml · nonDerivative · entry 4

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,496,856

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.14 to $61.85.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021761 · doc1.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,500,595

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.14 to $61.13.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021760 · doc1.xml · nonDerivative · entry 4

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 161,916

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.14 to $61.85.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021760 · doc1.xml · nonDerivative · entry 3

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 162,447

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.14 to $61.13.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-21-000039 · doc1.xml · nonDerivative · entry 2

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,412,411

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.12 to $61.79.

SEC source: 0001567619-21-000039 · doc1.xml · nonDerivative · entry 1

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,415,911

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.12 to $61.11. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (2) - (5) to this Form 4.

SEC source: 0001567619-20-021680 · doc1.xml · nonDerivative · entry 3

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,428,211

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.06 to $62.60.

SEC source: 0001567619-20-021680 · doc1.xml · nonDerivative · entry 2

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,429,111

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.06 to $62.05.

SEC source: 0001567619-20-021761 · doc1.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,515,028

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.06 to $62.75.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021761 · doc1.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,516,227

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.06 to $62.05. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (3) - (6) to this Form 4.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021760 · doc1.xml · nonDerivative · entry 2

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 164,449

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.06 to $62.75.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021760 · doc1.xml · nonDerivative · entry 1

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 164,622

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.06 to $62.05. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (4) - (7) to this Form 4.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021632 · doc1.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,532,980

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.47 to $62.44.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021631 · doc1.xml · nonDerivative · entry 2

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 166,959

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.47 to $62.44.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021680 · doc1.xml · nonDerivative · entry 1

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,443,911

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.47 to $62.42. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (2) - (4) to this Form 4.

SEC source: 0001567619-20-021593 · doc1.xml · nonDerivative · entry 2

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,459,811

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.43 to $61.15.

SEC source: 0001567619-20-021632 · doc1.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,551,317

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.44 to $61.09. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (3) - (4) to this Form 4.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021631 · doc1.xml · nonDerivative · entry 1

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 169,517

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.44 to $61.09. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (4) - (5) to this Form 4.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021593 · doc1.xml · nonDerivative · entry 1

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,467,511

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.37 to $61.26. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (2) - (3) to this Form 4.

SEC source: 0001567619-20-021578 · doc1.xml · nonDerivative · entry 3

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 170,818

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.37 to $61.27.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021579 · doc1.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,560,539

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.37 to $61.27.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021570 · doc1.xml · nonDerivative · entry 4

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,481,911

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.74 to $60.44.

SEC source: 0001567619-20-021570 · doc1.xml · nonDerivative · entry 3

Peterffy Thomas · CIK 0001391405 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,491,911

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.74 to $59.73.

SEC source: 0001567619-20-021578 · doc1.xml · nonDerivative · entry 2

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 173,280

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.74 to $60.65.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021578 · doc1.xml · nonDerivative · entry 1

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 175,095

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.74 to $59.73. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (4) - (6) to this Form 4.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001567619-20-021579 · doc1.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,578,105

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $59.74 to $60.65.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021579 · doc1.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,591,196

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.74 to $59.73. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes (3) - (5) to this Form 4.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021509 · doc1.xml · nonDerivative · entry 4

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,596,442

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.28 to $58.84.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021509 · doc1.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,604,605

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $57.28 to $58.27.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan"); (b) unvested restricted stock units that were awarded under the Plan; and (c) securities acquired by the Reporting Person, in a partial redemption of his interest in IBG Holdings LLC.

SEC source: 0001567619-20-021506 · doc1.xml · nonDerivative · entry 4

Brody Paul Jonathan · CIK 0001391403 · Director · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 175,838

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $58.28 to $58.84.

F2 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.