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Koppers Holdings Inc. Common Stock (NY:KOP)

27.66 +0.73 (+2.71%)

Streaming Delayed Price Updated: 2:15 PM EST, Jan 8, 2026 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

April 05, 2022

From The Rosen Law Firm, P.A.

Via Business Wire

NYSE:KOP Investor Alert: Investigation over Potential Securities Laws Violations by Koppers Holdings Inc. ↗

April 04, 2022

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

March 16, 2022

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

March 15, 2022

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

March 11, 2022

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 ↗

March 08, 2022

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

February 25, 2022

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

February 24, 2022

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

February 24, 2022

From The Law Offices of Frank R. Cruz

Via Business Wire

Koppers Holdings Inc. (NYSE:KOP) Investor Alert: Investigation Concerning Potential Wrongdoing ↗

April 27, 2021

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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