INVESTOR ALERT: Attorneys File Class Action Lawsuit Against Six Flags Entertainment Corporation f/k/a CopperSteel HoldCo, Inc. (FUN) and Announces Opportunity for Investors with Substantial Losses to Lead Class Action Lawsuit

SAN DIEGO, Nov. 17, 2025 /PRNewswire/ --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 (the "Merger"), have until 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, and pending in the Northern District of Ohio, the Six Flags class action lawsuit charges Six Flags as well as certain top executive officers with violations of the Securities Act of 1933.

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