Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (FUN) Investors with Substantial Losses Have Opportunity to Lead Investor Class Action Lawsuit

San Diego, California--(Newsfile Corp. - December 13, 2025) - Robbins Geller Rudman & Dowd LLP announces that purchasers or acquirers of Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (NYSE: FUN) common stock pursuant or traceable to the company's registration statement and prospectus issued in connection with the July 1, 2024 merger of legacy Six Flags Entertainment Corporation ("Legacy Six Flags") with Cedar Fair, L.P. ("Cedar Fair"), and their subsidiaries and affiliates ("Merger"), have until Monday, January 5, 2026 to seek appointment as lead plaintiff of the Six Flags class action lawsuit.

Newsfile Corp • Dec 13, 2025

FUN Investors Have Opportunity to Lead Six Flags Entertainment Corporation Securities Fraud Lawsuit with the Schall Law Firm

LOS ANGELES, Dec. 12, 2025 (GLOBE NEWSWIRE) -- The Schall Law Firm , a national shareholder rights litigation firm, announces the filing of a class action lawsuit against Six Flags Entertainment Corporation (“Six Flags” or “the Company”) (NYSE: FUN) for violations of the federal securities laws. Investors who purchased the Company's securities pursuant and/or traceable to the registration statement and prospectus issued in connection with the July 1, 2024 merger of legacy Six Flags Entertainment Corporation (“Legacy Six Flags”) with Cedar Fair, L.P.

GlobeNewsWire • Dec 12, 2025

Six Flags Shareholder Alert: ClaimsFiler Reminds Investors With Losses In Excess Of $100,000 Of Lead Plaintiff Deadline In Class Action Lawsuits Against Six Flags Entertainment Corporation - FUN

NEW ORLEANS , Dec. 12, 2025 /PRNewswire/ -- ClaimsFiler, a FREE shareholder information service, reminds investors that they have until January 5, 2026 to file lead plaintiff applications in a securities class action lawsuit against Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (NYSE: FUN), if they purchased or otherwise acquired the Company's common stock pursuant or traceable to the company's registration statement and prospectus issued in connection with the July 1, 2024 merger of legacy Six Flags Entertainment Corporation ("Legacy Six Flags") with Cedar Fair, L.P. ("Cedar Fair"), and their subsidiaries and affiliates (the "Merger").

PRNewsWire • Dec 13, 2025

FUN INVESTOR ALERT: Bronstein, Gewirtz & Grossman LLC Announces that Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. Investors with Substantial Losses Have Opportunity to Lead Class Action Lawsuit

NEW YORK, Dec. 11, 2025 (GLOBE NEWSWIRE) -- Attorney Advertising -- Bronstein, Gewirtz & Grossman, LLC, a nationally recognized law firm, notifies investors that a class action lawsuit has been filed on behalf of purchasers or acquirers of Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (NYSE: FUN) common stock pursuant or traceable to the company's registration statement and prospectus issued in connection with the July 1, 2024 merger of legacy Six Flags Entertainment Corporation (“Legacy Six Flags”) with Cedar Fair, L.P. (“Cedar Fair”), and their subsidiaries and affiliates (the “Merger”).

GlobeNewsWire • Dec 11, 2025

Deadline Alert: Six Flags Entertainment Corporation (FUN) Shareholders Who Lost Money Urged To Contact Glancy Prongay & Murray LLP About Securities Fraud Lawsuit

LOS ANGELES, Dec. 11, 2025 (GLOBE NEWSWIRE) -- Glancy Prongay & Murray LLP reminds investors of the upcoming January 5, 2026 deadline to file a lead plaintiff motion in the class action filed on behalf of investors who purchased or otherwise acquired Six Flags Entertainment Corporation (“Six Flags” or the “Company”) (NASDAQ: FUN) securities between July 1, 2024 and November 5, 2025, inclusive (the “Class Period”).

GlobeNewsWire • Dec 12, 2025

Rush Island Decided It Had Enough Fun With Six Flags Stock

Rush Island sold 3,306,963 shares of FUN; valued at about $104 million based on the Q3 average share price. The trade value represented 6% of 13F reportable assets under management.

The Motley Fool • Dec 10, 2025

INVESTOR REMINDER: Berger Montague Notifies Six Flags Entertainment Corp. (NYSE: FUN) Investors of a Class Action Lawsuit and Deadline

PHILADELPHIA , Dec. 10, 2025 /PRNewswire/ -- National plaintiffs' law firm Berger Montague PC  announces that a class action lawsuit against Six Flags Entertainment Corp. (NYSE: FUN) ("Six Flags" or the "Company") has been filed on behalf of investors who purchased or acquired Six Flags shares during the period of  July 1, 2024 through November 5, 2025 (the "Class Period"), including in connection with the merger between Six Flags and Cedar Fair L.P. (the "Merger").

PRNewsWire • Dec 10, 2025

Six Flags Entertainment Corporation Securities Fraud Class Action Result of Undisclosed Financial Problems and 63% Stock Decline - Investors may Contact Lewis Kahn, Esq, @ KSF

NEW YORK and NEW ORLEANS, Dec. 09, 2025 (GLOBE NEWSWIRE) -- Kahn Swick & Foti, LLC (“KSF”) and KSF partner, former Attorney General of Louisiana, Charles C. Foti, Jr., remind investors with substantial losses that they have until January 5, 2026 to file lead plaintiff applications in a securities class action lawsuit against Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (NYSE: FUN), if they purchased or otherwise acquired the Company's common stock pursuant or traceable to the company's registration statement and prospectus issued in connection with the July 1, 2024 merger of legacy Six Flags Entertainment Corporation (“Legacy Six Flags”) with Cedar Fair, L.P. (“Cedar Fair”), and their subsidiaries and affiliates (the “Merger”). This action is pending in the United States District Court for the Northern District of Ohio.

GlobeNewsWire • Dec 10, 2025

Six Flags Entertainment Corporation (FUN) Shareholders Who Lost Money Have Opportunity to Lead Securities Fraud Lawsuit

BENSALEM, Pa., Dec. 9, 2025 /PRNewswire/ -- The Law Offices of Howard G. Smith announces that investors with substantial losses have opportunity to lead the securities fraud class action lawsuit against Six Flags Entertainment Corporation ("Six Flags" or the "Company") (NYSE: FUN).

PRNewsWire • Dec 9, 2025

Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (FUN) Investors with Substantial Losses Have Opportunity to Lead Class Action Lawsuit - RGRD Law

SAN DIEGO, Dec. 08, 2025 (GLOBE NEWSWIRE) -- Robbins Geller Rudman & Dowd LLP announces that purchasers or acquirers of Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (NYSE: FUN) common stock pursuant or traceable to the company's registration statement and prospectus issued in connection with the July 1, 2024 merger of legacy Six Flags Entertainment Corporation (“Legacy Six Flags”) with Cedar Fair, L.P. (“Cedar Fair”), and their subsidiaries and affiliates (“Merger”), have until Monday, January 5, 2026 to seek appointment as lead plaintiff of the Six Flags class action lawsuit.

GlobeNewsWire • Dec 8, 2025