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KOP

QT74Koppers Holdings Inc.
NYSE·Basic Materials·Chemicals - Specialty·USA
Latest market price
43.73
+0.08+0.18%
OverviewShort InterestFilings
KOPQT74Koppers Holdings Inc.·NYSE
OverviewShort InterestFilings
43.73+0.18%

Latest SEC Filings

Form category
Filing Date ▾Report DateFormDescriptionFilingDocument
Jun 17, 2026Jun 17, 20264Statement of changes in beneficial ownership
Jun 17, 2026Jun 17, 20264Statement of changes in beneficial ownership
Jun 17, 2026Jun 17, 20264Statement of changes in beneficial ownership
Jun 17, 2026Jun 17, 20264Statement of changes in beneficial ownership
Jun 15, 2026Jun 15, 20264Statement of changes in beneficial ownership
Jun 04, 2026Jun 04, 20264Statement of changes in beneficial ownership
May 27, 2026May 27, 20264Statement of changes in beneficial ownership
May 27, 2026May 27, 20263Initial statement of beneficial ownership
May 19, 2026May 19, 2026SC 13DBeneficial ownership statement (active)
May 14, 2026May 14, 20264Statement of changes in beneficial ownership
May 14, 2026May 14, 20264Statement of changes in beneficial ownership
May 13, 2026May 13, 2026SC 13G/ASC 13G/A
May 11, 2026May 11, 20268-KCurrent report
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 11, 2026May 11, 20264Statement of changes in beneficial ownership
May 08, 2026May 08, 202610-QQuarterly report
May 08, 2026May 08, 2026S-8Registration of employee benefit securities
May 08, 2026May 08, 20268-KCurrent report
May 07, 2026May 07, 20268-K/A8-K/A
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