IBKR

SEC source: 0001381197-24-000056 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 497,368

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.30 to $89.12. 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.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 8

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 510,285

F8 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.00 to $90.34.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 7

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 512,504

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.00 to $89.99.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 6

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 523,615

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.00 to $88.99.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 5

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 525,060

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.00 to $87.99.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 4

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 525,241

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.00 to $86.99.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 525,331

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 525,421

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.88 to $88.38.

F1 · 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: 0001381197-24-000054 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 529,567

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.88 to $87.87. 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) - (8) to this Form 4.

F1 · 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: 0001381197-24-000052 · form4.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 538,610

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.86 to $88.82.

F1 · 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: 0001381197-24-000052 · form4.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 551,617

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.01 to $88.66.

F1 · 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: 0001381197-24-000052 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 554,688

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.01 to $88.00. 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.

F1 · 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: 0001381197-24-000045 · form4.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 564,805

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.62 to $87.20.

F1 · 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: 0001381197-24-000045 · form4.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 577,632

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.07 to $88.58.

F1 · 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: 0001381197-24-000045 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 577,993

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.07 to $88.06. 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.

F1 · 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: 0001381197-24-000037 · form4.xml · nonDerivative · entry 6

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 590,820

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.90 to $88.04.

F1 · 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: 0001381197-24-000037 · form4.xml · nonDerivative · entry 5

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 591,091

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.90 to $87.89.

F1 · 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: 0001381197-24-000037 · form4.xml · nonDerivative · entry 4

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 598,318

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.90 to $86.89.

F1 · 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: 0001381197-24-000037 · form4.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 604,008

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $89.14 to $89.48.

F1 · 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: 0001381197-24-000037 · form4.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 604,641

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.14 to $89.13.

F1 · 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: 0001381197-24-000037 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 605,905

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.14 to $88.13. 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) - (7) to this Form 4.

F1 · 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: 0001381197-24-000031 · form4.xml · nonDerivative · entry 6

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 616,835

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $88.68 to $88.73.

F1 · 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: 0001381197-24-000031 · form4.xml · nonDerivative · entry 5

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 617,106

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.68 to $88.67.

F1 · 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: 0001381197-24-000031 · form4.xml · nonDerivative · entry 4

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 618,823

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.68 to $87.67.

F1 · 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: 0001381197-24-000031 · form4.xml · nonDerivative · entry 3

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 630,023

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $87.00 to $87.48.

F1 · 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: 0001381197-24-000031 · form4.xml · nonDerivative · entry 2

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 631,017

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $86.00 to $86.99.

F1 · 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: 0001381197-24-000031 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 637,069

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $85.00 to $85.99. 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) - (7) to this Form 4.

F1 · 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: 0001381197-24-000021 · form4.xml · nonDerivative · entry 1

Yuen Nicole · CIK 0001818969 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,195

F1 · shares: This represents an annual grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F2 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

F3 · 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: 0001381197-24-000019 · form4.xml · nonDerivative · entry 1

Bright Jill · CIK 0001714651 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,199

F1 · shares: This represents an annual grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F2 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

F3 · balance_after: This amount includes (a) securities acquired by the Reporting Person; (b) Class A common stock attributable to vested restricted stock units that were awarded under the Plan; and (c) unvested restricted stock units that were awarded under the Plan.

SEC source: 0001381197-24-000015 · form4.xml · nonDerivative · entry 1

Harris Lawrence E · CIK 0001406586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,284

F1 · shares: This represents an annual grant of restricted stock units under the 2007 Stock Incentive Plan as amended for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F2 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

SEC source: 0001381197-24-000033 · form4.xml · nonDerivative · entry 1

Peterffy William · CIK 0001812281 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,195

F1 · shares: This represents an annual grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F2 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

F3 · 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: 0001381197-24-000029 · form4.xml · nonDerivative · entry 2

Galik Milan · CIK 0001391404 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,315,182

F3 · shares: This represents an annual grant of restricted stock units under the Plan for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F4 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

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: 0001381197-24-000029 · form4.xml · nonDerivative · entry 1

Galik Milan · CIK 0001391404 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,314,880

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

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: 0001381197-24-000027 · form4.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 748,177

F3 · shares: This represents an annual grant of restricted stock units under the Plan for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F4 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

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: 0001381197-24-000027 · form4.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 747,875

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

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: 0001381197-24-000025 · form4.xml · nonDerivative · entry 2

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 308,770

F3 · shares: This represents an annual grant of restricted stock units under the Plan for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F4 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

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

SEC source: 0001381197-24-000025 · form4.xml · nonDerivative · entry 1

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 308,468

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

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

SEC source: 0001381197-24-000023 · form4.xml · nonDerivative · entry 1

Frank Thomas AJ · CIK 0001391401 · Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 643,212

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

F2 · balance_after: This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the 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: 0001381197-24-000017 · form4.xml · nonDerivative · entry 1

Mendonca Denis · CIK 0001665345 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,951

F1 · shares: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

F1 · price: This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest 20% on or about 5/9/2024 and 20% on each of the first four anniversaries of 5/9/2024.

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: 0001381197-24-000035 · form4.xml · nonDerivative · entry 1

Uhde Philip · CIK 0001772442 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,572

F1 · shares: This represents an annual grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2023.

F2 · price: The price represents the closing price of the issuer's Class A common stock on December 29, 2023.

F3 · 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: 0001381197-23-000156 · form4.xml · nonDerivative · entry 1

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 293,688

F1 · kind: The Reporting Person donated 800 shares of IBKR Class A common stock to a charitable organization.

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

SEC source: 0001381197-23-000153 · form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 0

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000153 · form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 1

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.31 to $81.24. 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 range set forth in footnote (3) to this Form 4.

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000151 · form4.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 2,201

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 to $80.77

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000151 · form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 11,401

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.69 to $80.39.

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000151 · form4.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 11,841

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.69 to $79.68. 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.

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000147 · form4.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 12,484

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.00 to $80.46.

SEC source: 0001381197-23-000147 · form4.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 21,910

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.00 to $79.99.

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000147 · form4.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 25,536

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.21 to $80.78

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.

SEC source: 0001381197-23-000147 · form4.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Indirect · by PJB Holdings LLC

Disclosed balance after: 30,272

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.21 to $80.20.

F1 · balance_after: Represents number of securities owned by PJB Holdings LLC, which is owned indirectly by the Reporting Person.