Item 5. Other Information
ITEM 5. OTHER INFORMATION.
Trading Arrangements
During the three months ended March 31, 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.
37
Table of Contents
ITEM 6. EXHIBITS.
The following exhibits are being filed or furnished as part of this Quarterly Report on Form 10-Q:
Exhibit No. Description
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 March 31, 2026, formatted in Inline XBRL: (i) Condensed Consolidated Statements of Income (Loss), (ii) Condensed Consolidated Statements of Comprehensive Income (Loss), (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 March 31, 2026, formatted in Inline XBRL and included as Exhibit 101
38
Table of Contents
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: May 5, 2026 By: /s/ MICHAEL FEEHAN
Michael Feehan
Vice President and Chief Financial Officer
(Duly Authorized Officer and Principal Financial and Accounting Officer)
39
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.