Item 5. Other Information
ITEM 5. OTHER INFORMATION.
Trading Arrangements
During the three months ended June 30, 2026, none of the Company’s directors or executive officers adopted , modified or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” each as defined in Item 408(a) of Regulation S-K.
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ITEM 6. EXHIBITS.
The following exhibits are being filed or furnished as part of this Quarterly Report on Form 10-Q:
Exhibit No. Description
2.1 Share Purchase Agreement, dated as of May 1, 2026, by and among INEOS Calabrian Holdings Limited, INEOS Calabrian Canada Holdings Limited, INEOS Enterprises Holdings Limited, Ecovyst Inc., New Structure Subco Inc. and EV Industrial Chemical Subsidiary Holdings Inc. (incorporated by reference to Exhibit 2.1 to the Company’s Form 8-K, filed May 4, 2026)
2.2 Deed of Amendment to Share Purchase Agreement, dated as of June 29, 2026 by and among INEOS Calabrian Holdings Limited, INEOS Calabrian Canada Holdings Limited, INEOS Enterprises Holdings Limited, Ecovyst Inc., New Structure Subco Inc. and EV Industrial Chemical Subsidiary Holdings Inc.*
10.1 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 (incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed June 30, 2026)
31.1 Certification of Chief Executive Officer of Ecovyst Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2 Certification of Chief Financial Officer of Ecovyst Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1 Certification of Chief Executive Officer of Ecovyst Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2 Certification of Chief Financial Officer of Ecovyst Inc. pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101 The following materials from the Quarterly Report on Form 10-Q of Ecovyst Inc. for the quarter ended June 30, 2026, formatted in Inline XBRL: (i) Condensed Consolidated Statements of Income, (ii) Condensed Consolidated Statements of Comprehensive Income, (iii) Condensed Consolidated Balance Sheets, (iv) Condensed Consolidated Statements of Stockholders’ Equity, (v) Condensed Consolidated Statements of Cash Flows, (vi) Notes to Condensed Consolidated Financial Statements and (vii) document and entity information, tagged as blocks of text and including detailed tags
104 The cover page from the Quarterly Report on Form 10-Q of Ecovyst Inc. for the quarter ended June 30, 2026, formatted in Inline XBRL and included as Exhibit 101
* Schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The registrant agrees to furnish supplementally a copy of any omitted schedule or exhibit to the U.S. Securities and Exchange Commission upon request.
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SIGNATURES
Pursuant 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 thereunto duly authorized.
Ecovyst Inc.
Date: August 6, 2026 By: /s/ MICHAEL FEEHAN
Michael Feehan
Vice President and Chief Financial Officer
(Duly Authorized Officer and Principal Financial and Accounting Officer)
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Text extracted from the filing as submitted to EDGAR. Formatting, tables and exhibits are simplified for reading; the original document is authoritative for anything you rely on.