Form SCHEDULE 13D/A - General Statement of Acquisition of Beneficial Ownership: [Amend]
SEC Accession No. 0000950157-25-000552
Filing Date
2025-07-02
Accepted
2025-07-02 16:28:03
Documents
1

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13D/A  
1 primary_doc.xml SCHEDULE 13D/A 5755
  Complete submission text file 0000950157-25-000552.txt   7484
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. (Subject) CIK: 0001708035 (see all company filings)

EIN.: 813406833 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SCHEDULE 13D/A | Act: 34 | File No.: 005-90364 | Film No.: 251101596
SIC: 2800 Chemicals & Allied Products
(CF Office: 08 Industrial Applications and Services)

Mailing Address 38 HANS CRESCENT, KNIGHTSBRIDGE LONDON X0 SW1X 0LZ
Business Address FORT ANNE DOUGLAS Y8 IM1 5PD 44 20 7190 6300
INEOS Ltd (Filed by) CIK: 0001771044 (see all company filings)

EIN.: 000000000 | State of Incorp.: Y8 | Fiscal Year End: 1231
Type: SCHEDULE 13D/A