Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001708035-25-000122
Filing Date
2025-11-10
Accepted
2025-11-10 16:01:35
Documents
1
Period of Report
2025-11-07

Document Format Files

Seq Description Document Type Size
1 FORM 4 wk-form4_1762808492.html 4  
1 FORM 4 wk-form4_1762808492.xml 4 3496
  Complete submission text file 0001708035-25-000122.txt   5006
Mailing Address 600 LEE ROAD, SUITE 200 WAYNE PA 19087
Business Address 600 LEE ROAD, SUITE 200 WAYNE PA 19087 484-617-1200
Ecovyst Inc. (Issuer) CIK: 0001708035 (see all company filings)

EIN.: 813406833 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2800 Chemicals & Allied Products
(CF Office: 08 Industrial Applications and Services)

Mailing Address 11465 JOHNS CREEK PARKWAY, SUITE 400 JOHNS CREEK GA 30097
Business Address
Ward Susan F (Reporting) CIK: 0001795151 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-38221 | Film No.: 251466025