NYSE - Delayed Quote USD

Koppers Holdings Inc. (KOP)

52.73 -0.81 (-1.51%)
At close: April 26 at 4:00 PM EDT
53.75 +1.02 (+1.93%)
After hours: April 26 at 5:59 PM EDT

All S.E.C. Filings

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

8-K : Corporate Changes & Voting Matters

November 3, 2023

10-Q : Periodic Financial Reports

November 3, 2023

8-K : Corporate Changes & Voting Matters

October 12, 2023

8-K : Corporate Changes & Voting Matters

September 14, 2023

8-K : Corporate Changes & Voting Matters

August 3, 2023

10-Q : Periodic Financial Reports

August 3, 2023

8-K : Corporate Changes & Voting Matters

August 3, 2023

8-K : Corporate Changes & Voting Matters

May 5, 2023

10-Q : Periodic Financial Reports

May 5, 2023

8-K/A : Corporate Changes & Voting Matters

May 4, 2023

8-K : Corporate Changes & Voting Matters

April 11, 2023

ARS : Annual Report to Shareholders

April 3, 2023

DEF 14A : Proxy Statements

April 3, 2023

8-K : Corporate Changes & Voting Matters

March 22, 2023

8-K : Corporate Changes & Voting Matters

March 10, 2023

10-K : Periodic Financial Reports

February 27, 2023

8-K : Corporate Changes & Voting Matters

February 27, 2023

SC 13G/A : Tender Offer/Acquisition Reports

February 10, 2023

SC 13G/A : Tender Offer/Acquisition Reports

February 9, 2023

8-K : Corporate Changes & Voting Matters

December 13, 2022

10-Q : Periodic Financial Reports

November 4, 2022

8-K : Corporate Changes & Voting Matters

November 4, 2022

10-Q : Periodic Financial Reports

August 4, 2022

8-K : Corporate Changes & Voting Matters

August 4, 2022

8-K : Corporate Changes & Voting Matters

June 21, 2022

8-K : Corporate Changes & Voting Matters

May 6, 2022

10-Q : Periodic Financial Reports

May 6, 2022

DEF 14A : Proxy Statements

April 4, 2022

10-K : Periodic Financial Reports

February 23, 2022

8-K : Corporate Changes & Voting Matters

February 23, 2022

SC 13G : Tender Offer/Acquisition Reports

February 14, 2022

SC 13G/A : Tender Offer/Acquisition Reports

February 10, 2022

Performance Overview

Return KOP S&P 500
YTD +3.08% +6.92%
1-Year +63.52% +25.26%
3-Year +56.51% +22.00%