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CIK 0001315257 · Large accelerated filer

Koppers Holdings Inc.

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Ticker
KOP
Exchange
NYSE
Industry
Lumber & Wood Products (No Furniture)
FY end
Dec 31
Incorporated
PA
Entity type
operating
EIN
201878963
Phone
412-227-2001
Business address
436 SEVENTH AVENUE, PITTSBURGH, PA, 15219
Former names
KI Holdings Inc.
  1. S-8 Other Securities Offered to Employees in Benefit Plans
  2. ARS Other Annual Report to Security Holders
  3. ARS Other Annual Report to Security Holders
  4. EFFECT Other Notice of Effectiveness
  5. POS AM Other Post-effective Amendment for Registration Statement
  6. S-3ASR Offering Registration Statement
  7. ARS Other Annual Report to Security Holders
  8. ARS Other Annual Report to Security Holders
  9. EFFECT Other Notice of Effectiveness
  10. ARS Other Annual Report to Security Holders
  11. EFFECT Other Notice of Effectiveness
  12. ARS Other Annual Report to Security Holders
  13. ARS Other Annual Report to Security Holders
  14. ARS Other Annual Report to Security Holders
  15. EFFECT Other Notice of Effectiveness
  16. S-8 Other Securities Offered to Employees in Benefit Plans
  17. CERTNYS Other Certification by the New York Stock Exchange
  18. 8-A12B Other Registration of Securities

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