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Koppers Holdings Inc. (KOP)
Ticker: KOP
CIK: 0001315257
80
Filings Found (Last 1 Year)
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4
2026. 9. 14.
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
2026. 9. 14.
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
2026. 9. 14.
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
2026. 9. 14.
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
2026. 8. 31.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 8. 19.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 8. 12.
Lucas Stephen G (CIK 0001919175)
Insider trading report
FORM 4
Open Filing
4
2026. 8. 11.
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
4
2026. 8. 10.
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
2026. 8. 7.
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
10-Q
2026. 6. 30.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Quarterly report
10-Q
Open Filing
8-K
2026. 8. 6.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
2026. 6. 18.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 6. 15.
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
2026. 6. 15.
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
2026. 6. 15.
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
2026. 6. 15.
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
2026. 6. 11.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 6. 3.
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 26.
Brenner Eric D. (CIK 0002136316)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 12.
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 13.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
Posadas Laura J (CIK 0002092070)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
Vartanian Nishan J. (CIK 0001564614)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
JENSEN TRACI L (CIK 0001533627)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
8-K
2026. 5. 11.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
2026. 5. 7.
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
2026. 5. 7.
NEUPAVER ALBERT J (CIK 0001190210)
Insider trading report
FORM 4
Open Filing
10-Q
2026. 3. 31.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Quarterly report
10-Q
Open Filing
8-K
2026. 5. 7.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
8-K/A
2025. 11. 5.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
8-K/A
8-K/A
Open Filing
4
2026. 3. 23.
Posadas Laura J (CIK 0002092070)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
Vartanian Nishan J. (CIK 0001564614)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
JENSEN TRACI L (CIK 0001533627)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 23.
NEUPAVER ALBERT J (CIK 0001190210)
Insider trading report
FORM 4
Open Filing
8-K/A
2026. 1. 5.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
8-K/A
8-K/A
Open Filing
4
2026. 3. 17.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 3. 2.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4/A
2026. 2. 26.
Lucas Stephen G (CIK 0001919175)
4/A
FORM 4/A
Open Filing
4
2026. 2. 26.
Lovalekar Tushar (CIK 0002057699)
Insider trading report
FORM 4
Open Filing
4
2002. 2. 26.
Lucas Stephen G (CIK 0001919175)
Insider trading report
FORM 4
Open Filing
4
2026. 2. 26.
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
2026. 2. 26.
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
4
2026. 2. 26.
Apostolou Stephanie L (CIK 0001806249)
Insider trading report
FORM 4
Open Filing
4
2026. 2. 26.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
10-K
2025. 12. 31.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Annual report
10-K
Open Filing
8-K
2026. 2. 26.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
2026. 2. 18.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2026. 2. 10.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
8-K
2026. 1. 5.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
4
2026. 1. 2.
Lovalekar Tushar (CIK 0002057699)
Insider trading report
FORM 4
Open Filing
4
2026. 1. 2.
Lucas Stephen G (CIK 0001919175)
Insider trading report
FORM 4
Open Filing
4
2026. 1. 2.
Apostolou Stephanie L (CIK 0001806249)
Insider trading report
FORM 4
Open Filing
4
2026. 1. 2.
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
2026. 1. 2.
Smith Jimmi Sue (CIK 0001684691)
Insider trading report
FORM 4
Open Filing
4
2026. 1. 2.
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
4
2026. 1. 2.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Lovalekar Tushar (CIK 0002057699)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Lucas Stephen G (CIK 0001919175)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Apostolou Stephanie L (CIK 0001806249)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Pearce Bradley A (CIK 0001776180)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Sandifer Andrew D (CIK 0001739998)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Smith Jimmi Sue (CIK 0001684691)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
MOTLEY DAVID L (CIK 0001584601)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Feng Xudong (CIK 0001463649)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
Sullivan James A. (CIK 0001450800)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
WILKERSON SONJA MICHELLE (CIK 0001245155)
Insider trading report
FORM 4
Open Filing
4
2025. 12. 16.
BALL M LEROY (CIK 0001229771)
Insider trading report
FORM 4
Open Filing
8-K/A
2024. 11. 8.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
8-K/A
8-K
Open Filing
4
2025. 11. 5.
Posadas Laura J (CIK 0002092070)
Insider trading report
FORM 4
Open Filing
10-Q
2025. 9. 30.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Quarterly report
10-Q
Open Filing
8-K
2025. 11. 7.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
8-K
2025. 11. 5.
Koppers Holdings Inc. (KOP) (CIK 0001315257)
Current report
8-K
Open Filing
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