IBKR

SEC source: 0001381197-25-000155 · form4.xml · nonDerivative · entry 1

Harris Lawrence E · CIK 0001406586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 198,704

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.71 to $69.20. 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 this footnote (1).

SEC source: 0001381197-25-000153 · form4.xml · nonDerivative · entry 2

Harris Lawrence E · CIK 0001406586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 209,349

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.15 to $69.18.

SEC source: 0001381197-25-000153 · form4.xml · nonDerivative · entry 1

Harris Lawrence E · CIK 0001406586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 216,204

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.63 to $69.82. 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 (1) - (2) to this Form 4.

SEC source: 0001381197-25-000150 · form4.xml · nonDerivative · entry 2

Harris Lawrence E · CIK 0001406586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 223,704

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.50 to $68.53.

SEC source: 0001381197-25-000151 · form4.xml · nonDerivative · entry 1

Bright Jill · CIK 0001714651 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,304

F1 · 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 2007 Stock Incentive Plan as amended the ("Plan"); and (c) unvested restricted stock units that were awarded under the Plan.

F2 · balance_after: On June 17, 2025, the Issuer effected a four-for-one split of its common stock, resulting in the reporting person's ownership of 7,428 additional shares of common stock.

SEC source: 0001381197-25-000150 · form4.xml · nonDerivative · entry 1

Harris Lawrence E · CIK 0001406586 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 231,704

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.50 to $67.81. 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 (1) - (2) to this Form 4.

F3 · balance_after: On June 17, 2025, the Issuer effected a four-for-one split of its common stock, resulting in the reporting person's ownership of 190,278 additional shares of common stock.

SEC source: 0001381197-25-000137 · 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: 6,928

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.75 to $70.26.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000137 · 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: 8,083

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.75 to $69.74.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000137 · 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: 10,062

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.64 to $68.82.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000137 · 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: 12,083

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.64 to $68.63.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000137 · 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: 20,875

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.64 to $67.63. 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) - (6) to this Form 4.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000135 · 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: 28,289

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.12 to $66.30.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000135 · 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: 29,870

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.12 to $66.11.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000135 · 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: 45,347

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.02 to $65.49.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000135 · 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: 49,595

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.02 to $65.01.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000135 · 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: 58,461

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.02 to $64.01. 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) - (6) to this Form 4.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000133 · 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: 59,643

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.27 to $66.15.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000133 · 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: 60,570

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.27 to $65.26.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000133 · 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: 74,034

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.11 to $66.09.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000133 · 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: 86,832

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.11 to $65.10. 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.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000131 · 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: 93,059

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.48 to $64.73.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000131 · 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: 93,622

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.48 to $64.47.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000131 · 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: 108,261

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.16 to $65.29.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000131 · 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: 108,401

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.16 to $65.15. 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.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000139 · 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: 101,473

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.32 to $65.15. 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 footnote (2) to this Form 4.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000129 · 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: 158,954

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.78 to $65.54.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000129 · 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: 229,973

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.78 to $64.77.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000129 · 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: 267,878

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.78 to $63.77.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000129 · 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: 275,815

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.28 to $63.09.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000129 · 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: 320,542

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.28 to $62.27. 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) - (6) to this Form 4.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000127 · 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: 382,336

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.61 to $62.68.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000127 · 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: 382,923

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.61 to $62.60.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000127 · 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: 481,524

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.22 to $64.30.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000127 · 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: 483,023

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.22 to $64.21.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000127 · 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: 520,529

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.22 to $63.21. 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) - (6) to this Form 4.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000124 · 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: 577,818

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.03 to $64.42.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000124 · 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: 639,435

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.03 to $64.02.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000124 · 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: 675,027

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.29 to $63.79

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000124 · 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: 729,750

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.29 to $63.28. 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.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000121 · 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: 787,601

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.01 to $62.92.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000121 · 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: 892,507

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $61.68 to $62.42.

F1 · balance_after: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000121 · 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: 977,463

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.68 to $61.67. 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: Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interest in IBG LLC.

SEC source: 0001381197-25-000113 · form4.xml · nonDerivative · entry 2

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 400,000

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.03 to $64.55.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000113 · form4.xml · nonDerivative · entry 1

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 420,521

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.03 to $64.02. 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) - (3) to this Form 4.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000111 · form4.xml · nonDerivative · entry 7

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 453,900

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000111 · form4.xml · nonDerivative · entry 6

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 454,100

F7 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.18 to $67.06.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000111 · form4.xml · nonDerivative · entry 5

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 456,500

F6 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.18 to $66.17.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000111 · form4.xml · nonDerivative · entry 4

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 456,700

F5 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.18 to $65.17.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000111 · form4.xml · nonDerivative · entry 3

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 456,900

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.18 to $64.17.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

SEC source: 0001381197-25-000111 · form4.xml · nonDerivative · entry 2

Nemser Earl H · CIK 0001391400 · Director · Vice Chairman

10b5-1 filing: Plan reported

Ownership: Indirect · by EN Holdings LLC

Disclosed balance after: 461,500

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.76 to $68.04.

F1 · balance_after: Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.