James A. Sullivan Insider Trades

President and CTO

President and CTO at Koppers Holdings Inc.. 2 significant open-market trades reported on SEC Form 4 in the last 180 days.

Bought

$4.4M

Sold

0 / 2

Buys / Sells

Companies

KOPPresident and CTO
Koppers Holdings Inc.
2 sells, $4.4M

Reported Trades

Open-market transactions only (code P and S), outside any 10b5-1 plan, dated by the day the filing reached EDGAR. Each row links to the filing.

Filed	Company	Trade	Value	Shares	Source
Aug 12, 2026	KOPPresident and CTO	sell8.3% of stake	$375K	7,500	Form 4
Aug 11, 2026	KOPPresident and CTO	sell46.9% of stake	$4.0M	80,000	Form 4

How to Read This Page

These are the trades an insider chose to make with their own money, not grants, option exercises or tax withholding. A purchase is the stronger signal (why buys carry more information than sales), and an insider who buys is locked out of selling for six months by the short-swing rule. Several insiders buying at the same company in the same week is cluster buying, the pattern the research literature rates highest. The window here is 180 days; the full filing history lives on EDGAR.

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