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Koppers Holdings Inc. Common Stock (NY:KOP)

29.41 +0.27 (+0.93%)
Official Closing Price Updated: 7:00 PM EDT, Oct 27, 2025 Add to My Watchlist
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Press Releases about Koppers Holdings Inc. Common Stock

ROSEN, TOP RANKED INVESTOR COUNSEL, Encourages Koppers Holdings Inc. Investors with Losses to Inquire About Securities Class Action Investigation – KOP
From The Rosen Law Firm, P.A.
Via Business Wire
NYSE:KOP Investor Alert: Investigation over Potential Securities Laws Violations by Koppers Holdings Inc.
San Diego, CA -- (SBWIRE) -- 04/04/2022 -- Koppers Holdings Inc. is under investigation over potential securities laws violations in connection with certain financial statements. 
Via SBWire
INVESTIGATION REMINDER: The Schall Law Firm Encourages Investors in Koppers Holdings Inc. with Losses of $100,000 to Contact the Firm
From The Schall Law Firm
Via Business Wire
INVESTIGATION ALERT: The Schall Law Firm Encourages Investors in Koppers Holdings Inc. with Losses of $100,000 to Contact the Firm
From The Schall Law Firm
Via Business Wire
KOP INVESTOR ALERT: ROSEN, NATIONAL TRIAL LAWYERS, Encourages Koppers Holdings Inc. Investors with Losses to Inquire About Securities Class Action Investigation KOP
Search for the latest press releases from publicly traded companies, private corporations, non-profits and other public sector organizations. 
Via NewMediaWire
Koppers Holdings Inc. (NYSE:KOP) Investor Notice: Investigation over Possible Violations of Securities Laws
San Diego, CA -- (SBWIRE) -- 03/08/2022 -- Koppers Holdings Inc is under investigation over potential securities laws in connection with certain financial statements. 
Via SBWire
Glancy Prongay & Murray LLP, a Leading Securities Fraud Law Firm, Announces Investigation of Koppers Holdings Inc. (KOP) on Behalf of Investors
From Glancy Prongay & Murray LLP
Via Business Wire
INVESTOR ALERT: Law Offices of Howard G. Smith Announces Investigation of Koppers Holdings Inc. (KOP) on Behalf of Investors
From Law Offices of Howard G. Smith
Via Business Wire
The Law Offices of Frank R. Cruz Announces Investigation of Koppers Holdings Inc. (KOP) on Behalf of Investors
From The Law Offices of Frank R. Cruz
Via Business Wire
Koppers Holdings Inc. (NYSE:KOP) Investor Alert: Investigation Concerning Potential Wrongdoing
San Diego, CA -- (SBWIRE) -- 04/27/2021 -- Certain directors of Koppers Holdings Inc. are under investigation over potential breaches of fiduciary duties by certain officers and directors at Koppers... 
Via SBWire
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