CoverageForm 410-K10-Q8-K13D13G13F

Koppers Holdings Inc.

KOPCIK 0001315257 · Every Form 4 filed by insiders at this issuer. See financials →

Annual report (10-K)

Latest 10-K filed Feb 26, 2026. Sentiment + YoY language diff vs prior year. Read sections →

Signal:Neutral
Risk Factors:tone -0.0197Δ-0.001487% similar+77/-177
MD&A:tone -0.0158Δ-0.003976% similar+153/-953

Sentiment via Loughran-McDonald lexicon · YoY diff via Jaccard similarity + paragraph set difference.

Recent 8-K announcements

Per-item disclosure feed. Item 2.02 is the earnings release.

Top insiders

Most active reporters at Koppers Holdings Inc.

NameRolesFilings
Ball M Leroy
OfficerDirector
44
Sullivan James A.
Officer
23
Pearce Bradley A
Officer
22
Dowd Joseph P
Officer
21
Feng Xudong
Director
21

Showing 1-5 of 24

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Top performers

Insiders ranked by realized 90-day signed return on their open-market trades at Koppers Holdings Inc.. Minimum 3 scored trades. Returns are signed - a sale followed by a rally counts against the insider.

#InsiderTradesWin rateAvgMedianBestWorst
1Washington Kevin3100%+18.7%+18.7%+18.7%+18.7%
2Pearce Bradley A475%+10.0%+12.5%+22.9%-7.8%
3Dowd Joseph P2181%+9.8%+16.3%+18.7%-21.7%
4Sullivan James A.3879%+9.6%+17.0%+18.4%-23.6%
5Ball M Leroy3664%+4.5%+8.3%+20.8%-25.4%
6Hyde Leslie S1850%+1.2%-2.8%+28.5%-26.3%

All filings

317 Form 4 / 4-A filings, newest first

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