Koppers Holdings Ownership & Insider Activity

Koppers Holdings (KOP) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 13.2% of shares outstanding. Institutional investors hold 76.4%. Over the past 90 days, insiders made 6 sales worth $4.9M.

Shares Outstanding

18.912M

Shares Float

14.304M

Insider Shares Owned

2.493M

Insider % Owned

13.2%

Institutional Shares Held

14.458M

Institutional % Held

76.4%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$4.9M total

Net Activity

Net Selling

Net Value (90d)

-$4.9M

Koppers Holdings Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Aug 31, 2026	LEROY BALL	CEO	SELL	4.200K	$45.96	$184K
Aug 19, 2026	LEROY BALL	CEO	SELL	3.000K	$45.84	$138K
Aug 12, 2026	Stephen Lucas	SVP, CULTURE AND ENGAGEMENT	SELL	1.308K	$44.55	$58K
Aug 11, 2026	James Sullivan	PRESIDENT AND CTO	SELL	7.500K	$50.00	$375K
Aug 10, 2026	Bradley Pearce	CAO	SELL	2.000K	$51.01	$102K
Aug 7, 2026	James Sullivan	PRESIDENT AND CTO	SELL	80.000K	$50.01	$4.0M
Jun 18, 2026	LEROY BALL	CEO	SELL	3.412K	$43.90	$150K
Jun 11, 2026	LEROY BALL	CEO	SELL	4.441K	$41.34	$171K
May 13, 2026	LEROY BALL	CEO	SELL	2.659K	$42.55	$113K