How many additional shares of Koppers Holdings Inc. did Sei Investments Co. buy, and what was the resulting total stake?

Sei Investments Co. bought 32,658 additional shares of Koppers Holdings Inc., increasing its stake by 87.5% in the first quarter to a total of 69,979 shares, valued at approximately $2.7 million.

What were Koppers Holdings Inc.'s recent financial results and guidance updates as reported in the news?

Koppers Holdings Inc. exceeded second-quarter earnings and revenue expectations but reported a substantial net loss due to impairment and restructuring costs; its full-year 2026 EPS guidance was maintained, though its midpoint is slightly below analyst consensus, and ongoing plant-closure and production-transfer efforts present near-term operational uncertainties.

Sei Investments Co. Buys 32,658 Shares of Koppers Holdings Inc. $KOP

Aug 8, 2026

Sei Investments increased its stake in Koppers Holdings by 87.5% in Q1. The company exceeded revenue targets but reported a net loss amid restructuring costs and plant closure uncertainties.

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