Robbins Geller Rudman & Dowd LLP Announces that 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, Dec. 3, 2025 /PRNewswire/ -- The law firm of 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. Captioned City of Livonia Employees' Retirement System v. Six Flags Entertainment Corporation, No. 25-cv-02394 (N.D. Ohio), the Six Flags class action lawsuit charges Six Flags and certain top executive officers with violations of the Securities Act of 1933.