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Feb 10, 2023 04:01PM Form SC 13G/A Koppers Holdings Inc. Filed by: Rubric Capital Management LP
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Feb 8, 2022 05:02PM Form SC 13G/A Koppers Holdings Inc. Filed by: FULLER & THALER ASSET MANAGEMENT, INC.
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Feb 14, 2020 06:01AM Form SC 13G/A Koppers Holdings Inc. Filed by: FULLER & THALER ASSET MANAGEMENT, INC.
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Feb 14, 2019 12:52PM Form SC 13G Koppers Holdings Inc. Filed by: SOUTHERNSUN ASSET MANAGEMENT, LLC
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Feb 14, 2018 06:17AM Form SC 13G/A Koppers Holdings Inc. Filed by: FULLER & THALER ASSET MANAGEMENT, INC.
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Feb 10, 2017 09:35AM Form SC 13G/A Koppers Holdings Inc. Filed by: VANGUARD GROUP INC
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Feb 10, 2016 07:20AM Form SC 13G/A Koppers Holdings Inc. Filed by: VANGUARD GROUP INC
Feb 9, 2016 01:46PM

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