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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 Grant or award Director acquired 12,995 shares (grant or award)
  2. 4 Grant or award See Remarks acquired 24,367 shares (grant or award)
  3. 4 Grant or award See Remarks acquired 81,222 shares (grant or award)
  4. 4 Grant or award See Remarks acquired 48,733 shares (grant or award)
  5. 4 Grant or award See Remarks acquired 95,842 shares (grant or award)
  6. 4 Grant or award See Remarks acquired 73,100 shares (grant or award)
  7. 4 Grant or award See Remarks acquired 324,887 shares (grant or award)
  8. 4 Shares withheld for taxes See Remarks gave up 3,701 shares (to pay taxes)
  9. 4 Shares withheld for taxes See Remarks gave up 6,338 shares (to pay taxes)
  10. 4 Shares withheld for taxes See Remarks gave up 1,677 shares (to pay taxes)
  11. 4 Shares withheld for taxes See Remarks gave up 7,272 shares (to pay taxes)
  12. 4 Shares withheld for taxes See Remarks gave up 10,189 shares (to pay taxes)
  13. 4 Shares withheld for taxes See Remarks gave up 6,847 shares (to pay taxes)
  14. 4 Shares withheld for taxes See Remarks gave up 3,826 shares (to pay taxes)
  15. 4 Shares withheld for taxes See Remarks gave up 12,339 shares (to pay taxes)
  16. 4 Shares withheld for taxes See Remarks gave up 12,200 shares (to pay taxes)
  17. 4 Grant or award Director acquired 14,533 shares (grant or award)
  18. 3 Insider Initial Statement of Ownership
  19. 4 Open-market buy See Remarks bought 53,500 shares at an average $9.51 ($508,994)
  20. 4 Grant or award Director acquired 12,008 shares (grant or award)

Page 10 of 16 · 309 filings