Form 4 - Statement of changes in beneficial ownership of securities:
SEC Accession No. 0001708035-26-000011
Filing Date
2026-01-07
Accepted
2026-01-07 16:16:28
Documents
1
Period of Report
2026-01-05

Document Format Files

Seq Description Document Type Size
1 FORM 4 wk-form4_1767820585.html 4  
1 FORM 4 wk-form4_1767820585.xml 4 3104
  Complete submission text file 0001708035-26-000011.txt   4635
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 C/O PQ GROUP HOLDINGS INC. 300 LINDENWOOD DRIVE MALVERN PA 19355
Business Address
Feehan Michael (Reporting) CIK: 0001874994 (see all company filings)

Type: 4 | Act: 34 | File No.: 001-38221 | Film No.: 26515898