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(now known as Six Flags Entertainment Corporation) (\"HoldCo\") and CopperSteel Merger Sub, LLC, the reported securities, which included 462 shares of Common Stock, 11,564 shares of restricted Common Stock and 1,171 Restricted Stock Units were each disposed of in exchange for shares of HoldCo common stock, restricted shares of HoldCo common stock or HoldCo restricted stock units, as applicable, in accordance with the Merger Agreement at an exchange ratio of 0.5800."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0000950170-24-079892","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/701374/000095017024079892/ownership.xml","form_type":"4"}},{"id":1506354,"issuer":{"id":89213,"kind":"organization","name":"Six Flags Entertainment Corp/OLD","symbol":"SIX"},"owners":[{"id":447,"kind":"person","name":"Sample Derek","position":1,"cik":"0001945770","reported_name":"Sample Derek","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock, par value $0.025 per share","published_at":"2024-05-22T16:37:42.000Z","date":"2024-05-21","kind":"sale","planned":false,"acquired":false,"shares":2300,"price":26.44,"value":60812.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 350 shares of common stock acquired pursuant to the Issuer's Employee Stock Purchase Plan since the last-filed Form 4."}],"balance_after":12805,"source":{"system":"sec-edgar","filing":"0000701374-24-000036","document":"wk-form4_1716410249.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/701374/000070137424000036/wk-form4_1716410249.xml","form_type":"4"}},{"id":1701673,"issuer":{"id":89213,"kind":"organization","name":"Six Flags Entertainment Corp/OLD","symbol":"SIX"},"owners":[{"id":447,"kind":"person","name":"Sample Derek","position":1,"cik":"0001945770","reported_name":"Sample Derek","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock, par value $0.025 per share","published_at":"2023-12-22T17:12:30.000Z","date":"2023-12-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":7332,"price":24.05,"value":176334.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares withheld in payment of tax liability in connection with the grant of (i) 14,953 shares of restricted stock reported herein and (ii) 4,675 share of restricted stock granted in settlement of previously reported restricted stock units , which shares of restricted stock will vest at the consummation of the Merger, subject to Mr. Sample's continued employment with Six Flags through the consummation of the Merger."}],"balance_after":14755,"source":{"system":"sec-edgar","filing":"0000950170-23-072743","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/701374/000095017023072743/ownership.xml","form_type":"4"}},{"id":1701672,"issuer":{"id":89213,"kind":"organization","name":"Six Flags Entertainment Corp/OLD","symbol":"SIX"},"owners":[{"id":447,"kind":"person","name":"Sample Derek","position":1,"cik":"0001945770","reported_name":"Sample Derek","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock, par value $0.025 per share","published_at":"2023-12-22T17:12:30.000Z","date":"2023-12-20","kind":"grant","planned":false,"acquired":true,"shares":14953,"price":24.05,"value":359619.65,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported securities represent a grant of restricted stock under the Six Flags Entertainment Corporation (\"Six Flags\") Long-Term Incentive Plan (the \"Plan\"), which will vest, subject to Mr. Sample's continued employment with Six Flags through the consummation of the previously announced merger of equals transaction (the \"Merger\") by and between Six Flags and Cedar Fair, L.P. pursuant to the Merger Agreement, dated November 2, 2023, by and among the parties thereto (the \"Merger Agreement\").  The reported amount includes: (i) 10,395 restricted shares received in respect of a retention bonus and (ii) 4,558 restricted shares granted in settlement of PSUs previously granted to Mr. Sample."}],"balance_after":22087,"source":{"system":"sec-edgar","filing":"0000950170-23-072743","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/701374/000095017023072743/ownership.xml","form_type":"4"}},{"id":1775851,"issuer":{"id":89213,"kind":"organization","name":"Six Flags Entertainment Corp/OLD","symbol":"SIX"},"owners":[{"id":447,"kind":"person","name":"Sample Derek","position":1,"cik":"0001945770","reported_name":"Sample Derek","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Accounting Officer"}}],"security":"Common Stock, par value $0.025 per share","published_at":"2023-09-21T16:45:29.000Z","date":"2023-09-20","kind":"tax_withholding","planned":false,"acquired":false,"shares":271,"price":23.762,"value":6439.502,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld in payment of tax liability in connection with the vesting of a previously reported award of restricted stock units, which vested September 19, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 393 shares of common stock acquired pursuant to the Issuer's Employee Stock Purchase Plan since the last-filed Form 4."}],"balance_after":7134,"source":{"system":"sec-edgar","filing":"0000701374-23-000042","document":"wk-form4_1695329119.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/701374/000070137423000042/wk-form4_1695329119.xml","form_type":"4"}},{"id":1930981,"issuer":{"id":89213,"kind":"organization","name":"Six Flags Entertainment Corp/OLD","symbol":"SIX"},"owners":[{"id":447,"kind":"person","name":"Sample Derek","position":1,"cik":"0001945770","reported_name":"Sample Derek","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CHIEF ACCOUNTING OFFICER"}}],"security":"Common Stock, par value$0.025 per share","published_at":"2023-04-04T17:02:17.000Z","date":"2023-03-08","kind":"grant","planned":false,"acquired":true,"shares":3512,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units issued to reporting person in connection with grant to all eligible full-time employees pursuant to the Issuer's Long-Term Incentive Plan. 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