Rubric Capital Management LP - 30 Sep 2025 SCHEDULE 13G Report for Ecovyst Inc. Common Stock, par value $0.01 per share (ECVT)

Filing Manager
Rubric Capital Management LP
Reporting Manager
Rubric Capital Management LP
Security
Ecovyst Inc. Common Stock, par value $0.01 per share
Symbol
ECVT
Shares outstanding
114,411,441 shares
Disclosed Ownership
10,400,000 shares
Ownership
9.1%
Form type
SCHEDULE 13G
Filing time
14 Nov 2025, 17:01:01 UTC
Date of event
30 Sep 2025
SEC
View on sec.gov

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Rubric Capital Management LP 9.1% 10,400,000 0 10,400,000 /s/ Michael Nachmani Michael Nachmani / Chief Operating Officer
David Rosen 9.1% 10,400,000 0 10,400,000 /s/ David Rosen David Rosen / Individually