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CIK 0001708035 · Large accelerated filer

Ecovyst Inc.

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Ticker
ECVT
Exchange
NYSE
Industry
Chemicals & Allied Products
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
813406833
Phone
484-617-1200
Business address
600 LEE ROAD, SUITE 200, WAYNE, PA, 19087
Former names
PQ Group Holdings Inc.
  1. 8-K Event Results of operations
  2. SCHEDULE 13D/A Stake Beneficial Ownership Report
  3. 11-K Other Annual Report
  4. SD Other Specialized Disclosure
  5. 8-K Event Shareholder vote results
  6. 10-Q Report Quarterly Report
  7. 8-K Event Results of operations
  8. 8-K Event Material agreement · New debt or obligation
  9. ARS Other Annual Report to Security Holders
  10. DEF 14A Proxy Proxy Statement
  11. 10-K Report Annual Report
  12. 8-K Event Results of operations
  13. 4 Grant or award Director acquired 25,674 shares (grant or award)
  14. 4 Grant or award See Remarks acquired 20,540 shares (grant or award)
  15. 4 Grant or award See Remarks acquired 154,044 shares (grant or award)
  16. 4 Grant or award Director acquired 25,674 shares (grant or award)
  17. 4 Grant or award See Remarks acquired 23,107 shares (grant or award)
  18. 4 Grant or award Director acquired 25,674 shares (grant or award)
  19. 4 Grant or award Director acquired 25,674 shares (grant or award)
  20. 4 Grant or award Director acquired 25,674 shares (grant or award)

Page 4 of 29 · 576 filings