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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 See Remarks acquired 12,306 shares (grant or award)
  2. 4 Returned to the company Director returned 25,476 shares (to the company)
  3. 4 Open-market buy Director bought 10,000 shares at $11.02 ($110,217)
  4. 4 Open-market sale 10% owner sold 11,490,444 shares at $9.95 ($114,329,918)
  5. 4 Open-market sale 10% owner sold 11,490,444 shares at $9.95 ($114,329,918)
  6. 4 Shares withheld for taxes See Remarks gave up 714 shares (to pay taxes)
  7. 4 Grant or award Director acquired 40,650 shares (grant or award)
  8. 4 Grant or award See Remarks acquired 106,708 shares (grant or award)
  9. 4 Grant or award Director acquired 21,341 shares (grant or award)
  10. 4 Grant or award Director acquired 21,341 shares (grant or award)
  11. 4 Grant or award Director acquired 21,341 shares (grant or award)
  12. 4 Grant or award See Remarks acquired 60,976 shares (grant or award)
  13. 4 Grant or award See Remarks acquired 33,029 shares (grant or award)
  14. 4 Grant or award Director acquired 20,325 shares (grant or award)
  15. 4 Grant or award See Remarks acquired 50,813 shares (grant or award)
  16. 4 Grant or award See Remarks acquired 33,029 shares (grant or award)
  17. 4 Grant or award Director acquired 22,358 shares (grant or award)
  18. 4 Grant or award Director acquired 20,325 shares (grant or award)
  19. 4 Shares withheld for taxes See Remarks gave up 13,362 shares (to pay taxes)
  20. 4 Shares withheld for taxes See Remarks gave up 8,180 shares (to pay taxes)

Page 5 of 16 · 309 filings