Cite Filings / KOP / 0001209191-23-048422

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4

Changes in Ownership

Koppers Holdings Inc. Filed 2023-09-06 Acc 0001209191-23-048422

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4 Changes in Ownership , xslF345X05/doc4.xml

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2023-09-13 4 Changes in Ownership
2023-09-13 4 Changes in Ownership
2023-09-13 4 Changes in Ownership
2023-09-06 4 Changes in Ownership
2023-09-05 4 Changes in Ownership
2023-09-01 144 Sale of Securities
2023-08-31 4 Changes in Ownership

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