Schedule 13G filing

Pzena Investment Management LLC cut its KOP stake below 5%

Schedule 13G · Filed Oct 19, 2026

Pzena Investment Management LLC reported owning 4.9% of Koppers Holdings Inc. (KOP) (926,505 shares) in a Schedule 13G filed Oct 19, 2026.

A 13G is a passive stake: the holder does not plan to push for changes.

Exited

Koppers Holdings Inc.

Stake

4.9% stake

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From a public Schedule 13G, linked above. Not investment advice, and not a recommendation to buy or sell.