Koppers Holdings Inc.

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Koppers Holdings Inc.
CIK #0001315257
EDGAR Form CIK 2011 - 2026
10-K [0001315257]
10-Q [0001315257]
3 [0001315257]
4 [0001315257]
5 [0001315257]
8-K [0001315257]
SC 13D [0001315257]
SC 13G [0001315257]
Form 13D/13G Filer Form 13D/13G Subject Filed
Simcoe Capital Management LLC Koppers Holdings Inc [2026-05-19]
Vanguard Capital Management LLC Koppers Holdings Inc [2026-04-30]
Pzena Investment Management LLC Koppers Holdings Inc [2025-04-28]
Dimensional Fund Advisors LP Koppers Holdings Inc [2024-02-09]
BlackRock Inc Koppers Holdings Inc [2023-01-20]
Rubric Capital Management LP Koppers Holdings Inc [2022-02-14]
SouthernSun Asset Management LLC Koppers Holdings Inc [2021-02-12]
SouthernSun Asset Management LLC Koppers Holdings Inc [2020-02-14]
Vanguard Group Inc Koppers Holdings Inc [2019-04-08]
SouthernSun Asset Management LLC Koppers Holdings Inc [2019-02-14]
View All
Form 3/4/5 Subject 2011 - 2026
Koppers Holdings Inc.
Ball M Leroy
Sandifer Andrew D
Feng Xudong
Motley David L
Wilkerson Sonja Michelle
Brenner Eric D.
Pearce Bradley A
Vartanian Nishan J.
Neupaver Albert J
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