{"url_path":"/sec/ecvt/8-k/2026-06-30/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Financial Statements and Exhibits.","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-30","source_url":"https://www.sec.gov/Archives/edgar/data/1708035/0001193125-26-290479-index.html","accession_number":"0001193125-26-290479","cik":"0001708035","ticker":"ECVT","issuer_name":"Ecovyst Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1708035/0001193125-26-290479-index.html","primary_entity_key":"0001708035","primary_entity_name":"Ecovyst Inc."},"word_count":122,"has_tables":true,"body_markdown":"Item 9.01\n\nFinancial Statements and Exhibits.\n\n(d) Exhibits\n\n \n\nExhibit\nNo.\n \n\nDescription\n\n10.1\n \n[Fourth Amendment Agreement, dated as of June 30, 2026, by and among Ecovyst Catalyst Technologies LLC, Eco Services Operations Corp., Ecovyst Midco II Inc., the other Guarantors party thereto, each 2026 Incremental Term Lender party thereto and UBS AG, Stamford Branch, as administrative agent.](d833981dex101.htm)\n\n104\n \nThe cover page from this Current Report on Form 8-K formatted in Inline XBRL.\n\n \n\nSIGNATURE\n\nPursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.\n\n \n\nDate: June 30, 2026\n \nEcovyst Inc.\n\n \n\n \nBy:\n \n\n/s/ Michael Feehan\n\n \n\n \nName:\n \nMichael Feehan\n\n \n\n \nTitle:\n \nVice President and Chief Financial Officer"}