What is the purpose of Patti A. Humble's initial Form 3 filing with the SEC?

The purpose of Patti A. Humble's initial Form 3 filing is to formally declare her status as an insider and establish her baseline reporting status as a director of Ecovyst Inc. (ECVT); the filing indicates beneficial ownership but does not report any stock transactions, option exercises, or other trading activity.

Does Patti A. Humble's Form 3 filing disclose any stock trades or ownership changes?

No, Patti A. Humble's initial Form 3 filing does not disclose any stock transactions, option exercises, or other trading activity; it solely serves to declare her insider status and indicate beneficial ownership without reporting changes in holdings.

Ecovyst Director Patti A. Humble Files Initial Form 3

May 26, 2026

Ecovyst Inc. director Patti A. Humble filed an initial Form 3 with the SEC to declare insider status. The filing establishes baseline reporting and does not involve any reported stock transactions.

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