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Subject to the reporting person's continued service as a director of the issuer through the vesting date, these RSUs are scheduled to vest on May 19, 2027 and, absent an election to defer settlement, settle in Class A Common Stock within 30 days thereafter, or may be pro-rated in accordance with the issuer's Non-Employee Director Compensation Policy, as disclosed in the issuer's Proxy Statement on DEF 14A filed with the SEC on March 26, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 1,645 unvested RSUs in respect of the Class A Common Stock that are scheduled to vest on May 19, 2027, subject to the reporting person's continued service as a director through the applicable vesting date or as may be pro-rated pursuant to the terms set forth in footnote 1 to this Form 4."}],"balance_after":3178,"source":{"system":"sec-edgar","filing":"0001758730-26-000117","document":"wk-form4_1779307776.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1758730/000175873026000117/wk-form4_1779307776.xml","form_type":"4"}},{"id":931042,"issuer":{"id":279,"kind":"organization","name":"Interactive Brokers Group, Inc.","symbol":"IBKR"},"owners":[{"id":45578,"kind":"person","name":"Repetto Richard H","position":1,"cik":"0002007873","reported_name":"Repetto Richard H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-01-26T21:18:15.000Z","date":"2026-01-01","kind":"grant","planned":false,"acquired":true,"shares":389,"price":64.31,"value":25016.59,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On January 22, 2026, Interactive Brokers Group, Inc.'s (\"Issuer\") Board of Directors (\"Board\") modified the compensation policy for members of the Board. The annual awards granted to all directors on December 31 of each year, under the 2007 Stock Incentive Plan as amended (\"Plan\"), increased from $25,000 to $50,000. This represents additional restricted stock units granted to the Reporting Person, under the Plan, which vested on January 1, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price represents the closing price of the Issuer's Class A common stock on December 31, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"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."}],"balance_after":3046,"source":{"system":"sec-edgar","filing":"0001381197-26-000041","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1381197/000138119726000041/ownership.xml","form_type":"4"}},{"id":944101,"issuer":{"id":279,"kind":"organization","name":"Interactive Brokers Group, Inc.","symbol":"IBKR"},"owners":[{"id":45578,"kind":"person","name":"Repetto Richard H","position":1,"cik":"0002007873","reported_name":"Repetto Richard H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2026-01-07T21:01:09.000Z","date":"2025-12-31","kind":"grant","planned":false,"acquired":true,"shares":389,"price":64.31,"value":25016.59,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This represents an annual grant of restricted stock units under the amended 2007 Stock Incentive Plan (\"Plan\") for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price represents the closing price of the issuer's Class A common stock on December 31, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"On June 17, 2025, the issuer effected a four-for-one split of its Class A common stock, resulting in the Reporting Person's ownership of 1,701 additional shares of Class A common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"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."}],"balance_after":2657,"source":{"system":"sec-edgar","filing":"0001381197-26-000028","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1381197/000138119726000028/ownership.xml","form_type":"4"}},{"id":1138600,"issuer":{"id":3211,"kind":"organization","name":"Tradeweb Markets Inc.","symbol":"TW"},"owners":[{"id":45578,"kind":"person","name":"Repetto Richard H","position":1,"cik":"0002007873","reported_name":"Repetto Richard H","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Class A common stock","published_at":"2025-05-21T20:07:44.000Z","date":"2025-05-20","kind":"grant","planned":false,"acquired":true,"shares":1533,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The reported transaction is an award of restricted stock units (\"RSUs\") in respect of the issuer's Class A common stock (the \"Class A Common Stock\"). Subject to the reporting person's continued service as a director of the issuer through the vesting date, these RSUs are scheduled to vest on May 20, 2026 and settle in Class A Common Stock within 30 days thereafter, or may be pro-rated in accordance with the issuer's Non-Employee Director Compensation Policy, as disclosed in the issuer's Proxy Statement on DEF 14A filed with the SEC on March 27, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 1,533 unvested RSUs in respect of the Class A Common Stock that are scheduled to vest on May 20, 2026, subject to the reporting person's continued service as a director through the applicable vesting date or as may be pro-rated pursuant to the terms set forth in footnote 1 to this Form 4."}],"balance_after":1533,"source":{"system":"sec-edgar","filing":"0001758730-25-000154","document":"wk-form4_1747858056.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1758730/000175873025000154/wk-form4_1747858056.xml","form_type":"4"}},{"id":1307638,"issuer":{"id":279,"kind":"organization","name":"Interactive Brokers Group, Inc.","symbol":"IBKR"},"owners":[{"id":45578,"kind":"person","name":"Repetto Richard H","position":1,"cik":"0002007873","reported_name":"Repetto Richard H","relationship":{"director":true}}],"security":"Class A common stock","published_at":"2025-01-07T22:42:02.000Z","date":"2024-12-31","kind":"grant","planned":false,"acquired":true,"shares":142,"price":176.67,"value":25087.14,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"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 12/31/2024."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price represents the closing price of the issuer's Class A common stock on December 31, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"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."}],"balance_after":567,"source":{"system":"sec-edgar","filing":"0001381197-25-000019","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1381197/000138119725000019/form4.xml","form_type":"4"}},{"id":1307637,"issuer":{"id":279,"kind":"organization","name":"Interactive Brokers Group, Inc.","symbol":"IBKR"},"owners":[{"id":45578,"kind":"person","name":"Repetto Richard H","position":1,"cik":"0002007873","reported_name":"Repetto Richard H","relationship":{"director":true}}],"security":"Class A common stock","published_at":"2025-01-07T22:42:02.000Z","date":"2024-12-31","kind":"grant","planned":false,"acquired":true,"shares":425,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount represents unvested restricted stock units that were awarded under the Plan."}],"balance_after":425,"source":{"system":"sec-edgar","filing":"0001381197-25-000019","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1381197/000138119725000019/form4.xml","form_type":"4"}}]}