Cite Filings / KOP / 0001209191-23-020565

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4

Changes in Ownership

Koppers Holdings Inc. Filed 2023-03-22 Acc 0001209191-23-020565

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4 Changes in Ownership , xslF345X04/doc4.xml

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2023-03-29 4 Changes in Ownership
2023-03-29 4 Changes in Ownership
2023-03-22 4 Changes in Ownership
2023-03-22 3 Initial Statement of Ownership
2023-03-22 8-K Executive or director change
2023-03-07 4 Changes in Ownership

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