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Mr. Ratcliffe disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"James A. Ratcliffe, as the majority owner of INEOS Limited, has the power to control the voting and disposition of the shares of common stock held by INEOS Limited. Mr. Ratcliffe disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":10731385,"source":{"system":"sec-edgar","filing":"0000950157-23-000585","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1207553/000095015723000585/form4.xml","form_type":"4"}},{"id":2463660,"issuer":{"id":4897,"kind":"organization","name":"Ecovyst Inc.","symbol":"ECVT"},"owners":[{"id":54989,"kind":"person","name":"INEOS Ltd","position":1,"cik":"0001771044","reported_name":"INEOS Ltd","relationship":{"ten_percent_owner":true}},{"id":113055,"kind":"person","name":"RATCLIFFE JAMES A","position":2,"cik":"0001207553","reported_name":"RATCLIFFE JAMES A","relationship":{"ten_percent_owner":true}}],"security":"Common Stock, par value $0.01","published_at":"2021-12-20T17:07:57.000Z","date":"2021-12-20","kind":"sale","acquired":false,"shares":416255,"price":9.12,"value":3796245.6,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"James A. 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Mr. Ratcliffe disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":24731385,"source":{"system":"sec-edgar","filing":"0000950157-21-001265","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1207553/000095015721001265/form4.xml","form_type":"4"}},{"id":2497491,"issuer":{"id":4897,"kind":"organization","name":"Ecovyst Inc.","symbol":"ECVT"},"owners":[{"id":54989,"kind":"person","name":"INEOS Ltd","position":1,"cik":"0001771044","reported_name":"INEOS Ltd","relationship":{"ten_percent_owner":true}},{"id":113055,"kind":"person","name":"RATCLIFFE JAMES A","position":2,"cik":"0001207553","reported_name":"RATCLIFFE JAMES A","relationship":{"ten_percent_owner":true}}],"security":"Common Stock, par value $0.01","published_at":"2021-11-23T16:08:04.000Z","date":"2021-11-23","kind":"sale","acquired":false,"shares":2775034,"price":9.12,"value":25308310.08,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"James A. 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Mr. Ratcliffe disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":25147640,"source":{"system":"sec-edgar","filing":"0000950157-21-001201","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1207553/000095015721001201/form4.xml","form_type":"4"}},{"id":2726852,"issuer":{"id":4897,"kind":"organization","name":"Ecovyst Inc.","symbol":"ECVT"},"owners":[{"id":54989,"kind":"person","name":"INEOS Ltd","position":1,"cik":"0001771044","reported_name":"INEOS Ltd","relationship":{"ten_percent_owner":true}},{"id":113055,"kind":"person","name":"RATCLIFFE JAMES A","position":2,"cik":"0001207553","reported_name":"RATCLIFFE JAMES A","relationship":{"ten_percent_owner":true}}],"security":"Common Stock, par value $0.01","published_at":"2021-05-05T16:19:27.000Z","date":"2021-05-05","kind":"sale","acquired":false,"shares":650398,"price":13.44,"value":8741349.12,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"James A. 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Mr. Ratcliffe disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":27922674,"source":{"system":"sec-edgar","filing":"0000950157-21-000490","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1207553/000095015721000490/form4.xml","form_type":"4"}},{"id":2732846,"issuer":{"id":4897,"kind":"organization","name":"Ecovyst Inc.","symbol":"ECVT"},"owners":[{"id":54989,"kind":"person","name":"INEOS Ltd","position":1,"cik":"0001771044","reported_name":"INEOS Ltd","relationship":{"ten_percent_owner":true}},{"id":113055,"kind":"person","name":"RATCLIFFE JAMES A","position":2,"cik":"0001207553","reported_name":"RATCLIFFE JAMES A","relationship":{"ten_percent_owner":true}}],"security":"Common Stock, par value $0.01","published_at":"2021-05-03T16:17:09.000Z","date":"2021-05-03","kind":"sale","acquired":false,"shares":4335990,"price":13.44,"value":58275705.6,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"James A. 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Mr. Ratcliffe disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein, and the inclusion of such securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose."}],"balance_after":28573072,"source":{"system":"sec-edgar","filing":"0000950157-21-000480","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1207553/000095015721000480/form4.xml","form_type":"4"}},{"id":3580900,"issuer":{"id":4897,"kind":"organization","name":"Ecovyst Inc.","symbol":"ECVT"},"owners":[{"id":158881,"kind":"organization","name":"INEOS Investments Partnership","position":1,"cik":"0001718053","reported_name":"INEOS Investments Partnership","relationship":{"ten_percent_owner":true}},{"id":113055,"kind":"person","name":"RATCLIFFE JAMES A","position":2,"cik":"0001207553","reported_name":"RATCLIFFE JAMES A","relationship":{"ten_percent_owner":true}}],"security":"Common Stock, par value $0.01","published_at":"2019-03-22T12:37:41.000Z","date":"2019-03-20","kind":"sale","acquired":false,"shares":32909062,"price":15.38,"value":506141373.56,"ownership":{"direct":true},"footnotes":[{"field":"acquired","element":"transactionAcquiredDisposedCode","label":"F1","text":"James A. 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