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Koppers Holdings Inc. (KOP)
Ticker: KOP
CIK: 0001315257
69
Filings Found (Last 1 Year)
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4
2/18/2026
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2/10/2026
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
8-K
1/5/2026
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
1/2/2026
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
4
1/2/2026
Lovalekar Tushar (CIK 0002057699)
Insider trading report
FORM 4
Open Filing
4
1/2/2026
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
1/2/2026
Apostolou Stephanie L (CIK 0001806249)
Insider trading report
FORM 4
Open Filing
4
1/2/2026
Lucas Stephen G (CIK 0001919175)
Insider trading report
FORM 4
Open Filing
4
1/2/2026
Smith Jimmi Sue (CIK 0001684691)
Insider trading report
FORM 4
Open Filing
4
1/2/2026
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Smith Jimmi Sue (CIK 0001684691)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Lovalekar Tushar (CIK 0002057699)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Apostolou Stephanie L (CIK 0001806249)
Insider trading report
FORM 4
Open Filing
4
12/16/2025
Lucas Stephen G (CIK 0001919175)
Insider trading report
FORM 4
Open Filing
8-K/A
11/8/2024
Koppers Holdings Inc. (KOP) (CIK 0001315257)
8-K/A
8-K
Open Filing
8-K
11/7/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
11/5/2025
Posadas Laura J (CIK 0002092070)
Insider trading report
FORM 4
Open Filing
10-Q
9/30/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Quarterly report
10-Q
Open Filing
8-K
11/5/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
9/15/2025
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
9/15/2025
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
9/15/2025
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
9/15/2025
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
8/15/2025
BALL M LEROY (CIK 0001229771)
Insider trading report
4
Open Filing
10-Q
6/30/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Quarterly report
10-Q
Open Filing
8-K
8/8/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
6/18/2025
BALL M LEROY (CIK 0001229771)
Insider trading report
4
Open Filing
8-K
6/17/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
6/13/2025
Washington Kevin (CIK 0001932214)
Insider trading report
4
Open Filing
8-K
5/22/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
5/21/2025
BALL M LEROY (CIK 0001229771)
Insider trading report
4
Open Filing
8-K
5/8/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
5/8/2025
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
4
Open Filing
4
5/8/2025
Feng Xudong (CIK 0001463649)
Insider trading report
4
Open Filing
4
5/8/2025
NEUPAVER ALBERT J (CIK 0001190210)
Insider trading report
4
Open Filing
4
5/8/2025
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
4
Open Filing
10-Q
3/31/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Quarterly report
10-Q
Open Filing
4
5/8/2025
Sandifer Andrew D (CIK 0001739998)
Insider trading report
4
Open Filing
4
5/8/2025
JENSEN TRACI L (CIK 0001533627)
Insider trading report
4
Open Filing
4
5/8/2025
Vartanian Nishan J. (CIK 0001564614)
Insider trading report
4
Open Filing
4
5/2/2025
TESTONI LOUIS L (CIK 0001576713)
Insider trading report
4
Open Filing
4
5/2/2025
NEUPAVER ALBERT J (CIK 0001190210)
Insider trading report
4
Open Filing
4
5/2/2025
JENSEN TRACI L (CIK 0001533627)
Insider trading report
4
Open Filing
4
5/2/2025
Tritch Stephen R (CIK 0001463204)
Insider trading report
4
Open Filing
4
5/2/2025
Vartanian Nishan J. (CIK 0001564614)
Insider trading report
4
Open Filing
4
4/11/2025
Lucas Stephen G (CIK 0001919175)
Insider trading report
4
Open Filing
4
3/24/2025
Sandifer Andrew D (CIK 0001739998)
Insider trading report
4
Open Filing
4
3/24/2025
TESTONI LOUIS L (CIK 0001576713)
Insider trading report
4
Open Filing
4
3/24/2025
Feng Xudong (CIK 0001463649)
Insider trading report
4
Open Filing
4
3/24/2025
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
4
Open Filing
4
3/24/2025
Lucas Stephen G (CIK 0001919175)
Insider trading report
4
Open Filing
4
3/24/2025
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
4
Open Filing
4
3/24/2025
Vartanian Nishan J. (CIK 0001564614)
Insider trading report
4
Open Filing
4
3/24/2025
Washington Kevin (CIK 0001932214)
Insider trading report
4
Open Filing
4
3/24/2025
Tritch Stephen R (CIK 0001463204)
Insider trading report
4
Open Filing
4
3/24/2025
JENSEN TRACI L (CIK 0001533627)
Insider trading report
4
Open Filing
4
3/24/2025
NEUPAVER ALBERT J (CIK 0001190210)
Insider trading report
4
Open Filing
4
3/19/2025
BALL M LEROY (CIK 0001229771)
Insider trading report
4
Open Filing
4/A
5/4/2023
WILKERSON SONJA MICHELLE (CIK 0001245155)
4/A
4/A
Open Filing
8-K
2/27/2025
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
10-K
12/31/2024
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Annual report
10-K
Open Filing
4
2/20/2025
BALL M LEROY (CIK 0001229771)
Insider trading report
4
Open Filing
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