0001708035-24-000050.txt : 20240124 0001708035-24-000050.hdr.sgml : 20240124 20240124164128 ACCESSION NUMBER: 0001708035-24-000050 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240122 FILED AS OF DATE: 20240124 DATE AS OF CHANGE: 20240124 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Coxon Robert CENTRAL INDEX KEY: 0001717991 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38221 FILM NUMBER: 24556985 MAIL ADDRESS: STREET 1: C/O PQ GROUP HOLDINGS INC. STREET 2: 300 LINDENWOOD DRIVE CITY: MALVERN STATE: PA ZIP: 19355 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Ecovyst Inc. CENTRAL INDEX KEY: 0001708035 STANDARD INDUSTRIAL CLASSIFICATION: CHEMICALS & ALLIED PRODUCTS [2800] ORGANIZATION NAME: 08 Industrial Applications and Services IRS NUMBER: 813406833 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 300 LINDENWOOD DRIVE CITY: MALVERN STATE: PA ZIP: 19355 BUSINESS PHONE: 484-617-1200 MAIL ADDRESS: STREET 1: 300 LINDENWOOD DRIVE CITY: MALVERN STATE: PA ZIP: 19355 FORMER COMPANY: FORMER CONFORMED NAME: PQ Group Holdings Inc. DATE OF NAME CHANGE: 20170531 4 1 wk-form4_1706132472.xml FORM 4 X0508 4 2024-01-22 0 0001708035 Ecovyst Inc. ECVT 0001717991 Coxon Robert C/O ECOVYST INC. 300 LINDENWOOD DRIVE MALVERN PA 19355 1 0 0 0 0 Common Stock 2024-01-22 4 A 0 22701 0 A 223620 D /s/ Joseph Koscinski, as attorney-in fact for Robert Coxon 2024-01-24