Koppers Holdings Inc. insider trading

KOPNYSE

$46.04+0.85 (+1.88%)as of Oct 2, 2026

“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.” — Peter Lynch

Insider Trading vs Stock Price data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+70.9%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Open market purchase

Open market sell

Marker size reflects transaction size.

Net dollar flow · Buy / Sell balance

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Key players

MLM. Leroy BallCEO2.2703%of company
AJAlbert J. NeupaverDirector0.4433%of company
JAJames A. SullivanPresident and CTO0.4383%of company
SLStephanie L. ApostolouChief Legal&Sus Officer & Sec.0.3339%of company
SRStephen R. TritchDirector0.2525%of company
LLLouis L. TestoniDirector0.2421%of company
JSJimmi Sue SmithChief Financial Officer0.2171%of company
BABradley A. PearceCAO0.217%of company
TLTraci L. JensenDirector0.1869%of company
DJDaniel J. SkrovanekVP, Growth and Innovation0.1843%of company

AI Activity Analysis

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Insider activity

Fromto

Company	Insider / role	Action	ΔOwn	Avg price	Amount
KOP	M. Leroy BallCEO	Open market sell$184K	-0.9%	$45.96	$184K	Aug 31, 2026	Sep 1, 2026
KOP	M. Leroy BallCEO	Open market sell$138K	-0.7%	$45.84	$138K	Aug 19, 2026	Aug 20, 2026
KOP	Stephen G. LucasSVP, Culture and Engagement	Open market sell$58.3K	-3.7%	$44.55	$58.3K	Aug 12, 2026	Aug 13, 2026
KOP	James A. SullivanPresident and CTO	Open market sell$375K	-8.3%	$50.00	$375K	Aug 11, 2026	Aug 12, 2026
KOP	Bradley A. PearceCAO	Open market sell$102K	-4.7%	$51.01	$102K	Aug 10, 2026	Aug 11, 2026
KOP	James A. SullivanPresident and CTO	Open market sell$5.12K	-0.1%	$51.22	$5.12K	Aug 7, 2026	Aug 11, 2026
KOP	James A. SullivanPresident and CTO	Open market sell$4M	-46.9%	$50.01	$4M	Aug 7, 2026	Aug 11, 2026
KOP	M. Leroy BallCEO	Open market sell$150K	-0.8%	$43.90	$150K	Jun 18, 2026	Jun 23, 2026
KOP	M. Leroy BallCEO	Open market sell$171K	-0.9%	$41.34	$171K	Jun 11, 2026	Jun 15, 2026
KOP	M. Leroy BallCEO	Open market sell$113K	-0.6%	$42.55	$113K	May 13, 2026	May 14, 2026
KOP	M. Leroy BallCEO	Open market sell$94.4K	-0.6%	$37.91	$94.4K	Mar 17, 2026	Mar 18, 2026
KOP	M. Leroy BallCEO	Open market sell$139K	-0.8%	$37.02	$139K	Mar 2, 2026	Mar 4, 2026
KOP	M. Leroy BallCEO	Open market sell$12.3K	-0.1%	$37.45	$12.3K	Mar 2, 2026	Mar 4, 2026
KOP	M. Leroy BallCEO	Open market sell$79.8K	-0.5%	$36.53	$79.8K	Mar 2, 2026	Mar 4, 2026

End of history · 14 transactions