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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. 4 Shares withheld for taxes See Remarks gave up 10,248 shares (to pay taxes)
  2. 4 Shares withheld for taxes See Remarks gave up 5,732 shares (to pay taxes)
  3. 4 Shares withheld for taxes See Remarks gave up 10,189 shares (to pay taxes)
  4. 4 Shares withheld for taxes See Remarks gave up 3,826 shares (to pay taxes)
  5. 4 Shares withheld for taxes See Remarks gave up 8,332 shares (to pay taxes)
  6. 4 Shares withheld for taxes See Remarks gave up 9,793 shares (to pay taxes)
  7. 4 Shares withheld for taxes CEO, President & Director gave up 12,200 shares (to pay taxes)
  8. 4 Shares withheld for taxes See Remarks gave up 34,241 shares (to pay taxes)
  9. 4 Shares withheld for taxes See Remarks gave up 10,516 shares (to pay taxes)
  10. 4 Open-market sale See Remarks sold 12,077 shares at $15.87 ($191,634)
  11. 3 Insider Initial Statement of Ownership
  12. 4 Open-market buy Director bought 13,112 shares at an average $15.25 ($199,925)
  13. 3 Insider Initial Statement of Ownership
  14. 4 Open-market sale 10% owner sold 32,909,062 shares at $15.38 ($506,141,374)
  15. 4 Grant or award See Remarks acquired 32,446 shares (grant or award)
  16. 4 Grant or award Director acquired 12,979 shares (grant or award)
  17. 4 Grant or award See Remarks acquired 24,335 shares (grant or award)
  18. 4 Grant or award See Remarks acquired 48,669 shares (grant or award)
  19. 4 Grant or award Director acquired 12,979 shares (grant or award)
  20. 4 Grant or award See Remarks acquired 24,335 shares (grant or award)

Page 12 of 16 · 309 filings