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Koppers Holdings Inc. (KOP)

29.97 -9.67 (-24.39%)
At close: November 6 at 4:00:03 PM EST
30.09 +0.12 (+0.40%)
After hours: November 6 at 7:17:53 PM EST
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KOP Q3 2026 earnings call
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All SEC Filings

8-K : Corporate Changes & Voting Matters

November 6, 2026

10-Q : Periodic Financial Reports

November 6, 2026

10-Q : Periodic Financial Reports

August 6, 2026

8-K : Corporate Changes & Voting Matters

August 6, 2026

8-K : Corporate Changes & Voting Matters

May 11, 2026

8-K : Corporate Changes & Voting Matters

May 8, 2026

S-8 : Offering Registrations

May 8, 2026

10-Q : Periodic Financial Reports

May 8, 2026

8-K/A : Corporate Changes & Voting Matters

May 7, 2026

DEF 14A : Proxy Statements

March 27, 2026

ARS : Annual Report to Shareholders

March 27, 2026

8-K/A : Corporate Changes & Voting Matters

March 18, 2026

8-K : Corporate Changes & Voting Matters

February 26, 2026

10-K : Periodic Financial Reports

February 26, 2026

8-K : Corporate Changes & Voting Matters

January 9, 2026

8-K/A : Corporate Changes & Voting Matters

December 3, 2025

10-Q : Periodic Financial Reports

November 7, 2025

8-K : Corporate Changes & Voting Matters

November 7, 2025

8-K : Corporate Changes & Voting Matters

November 5, 2025

10-Q : Periodic Financial Reports

August 8, 2025

8-K : Corporate Changes & Voting Matters

August 8, 2025

8-K : Corporate Changes & Voting Matters

June 18, 2025

8-K : Corporate Changes & Voting Matters

May 29, 2025

S-8 : Offering Registrations

May 9, 2025

8-K : Corporate Changes & Voting Matters

May 9, 2025

10-Q : Periodic Financial Reports

May 9, 2025

DEFA14A : Proxy Statements

April 11, 2025

ARS : Annual Report to Shareholders

March 28, 2025

DEF 14A : Proxy Statements

March 28, 2025

8-K : Corporate Changes & Voting Matters

February 27, 2025

10-K : Periodic Financial Reports

February 27, 2025

8-K : Corporate Changes & Voting Matters

December 17, 2024

8-K : Corporate Changes & Voting Matters

December 9, 2024

8-K : Corporate Changes & Voting Matters

December 5, 2024

10-Q : Periodic Financial Reports

November 8, 2024

8-K : Corporate Changes & Voting Matters

November 8, 2024

8-K : Corporate Changes & Voting Matters

August 8, 2024

10-Q : Periodic Financial Reports

August 8, 2024

8-K : Corporate Changes & Voting Matters

May 3, 2024

10-Q : Periodic Financial Reports

May 3, 2024

8-K/A : Corporate Changes & Voting Matters

May 2, 2024

8-K : Corporate Changes & Voting Matters

April 15, 2024

DEF 14A : Proxy Statements

April 2, 2024

PRE 14A : Proxy Statements

March 8, 2024

8-K : Corporate Changes & Voting Matters

February 28, 2024

10-K : Periodic Financial Reports

February 28, 2024

8-K : Corporate Changes & Voting Matters

February 13, 2024

8-K : Corporate Changes & Voting Matters

January 2, 2024

10-Q : Periodic Financial Reports

November 3, 2023

8-K : Corporate Changes & Voting Matters

November 3, 2023
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