Ecovyst Inc. 8-K

What Happened

• On February 26, 2026, Ecovyst Inc. announced that it is reporting its financial results for the quarter and year ended December 31, 2025. The company furnished a press release with the results as Exhibit 99.1 to this Current Report on Form 8-K. The filing states the furnished information is not “filed” for purposes of Section 18 of the Exchange Act.

Key Details

• Filing date: February 26, 2026.
• Reporting period: quarter and year ended December 31, 2025.
• Exhibit 99.1: press release announcing the financial results.
• Exhibit 104: cover page in Inline XBRL format included with the report.
  (Notes: the 8-K itself furnishes the press release but does not include the specific financial figures in the body of the Form 8-K.)

Why It Matters

• This 8-K signals Ecovyst has publicly released its quarterly and full-year 2025 earnings information; investors should review the press release (Exhibit 99.1) and the company’s earnings presentation, earnings call, or subsequent SEC filings for revenue, net income, guidance, and other financial metrics. Because the release is furnished (not “filed”), it is subject to a different liability standard under the Exchange Act.