Management Change/Compensation (Form 8-K)

On December 29, 2025, Six Flags Entertainment Corporation (the "Company") entered into a Consultant Agreement with Selim Bassoul (the "Consulting Agreement"), effective January 1, 2026, pursuant to which the Mr. Bassoul will provide advisory services in connection with the Company's project at Qiddiya in Riyadh, Saudi Arabia through December 31, 2026. The services include overseeing development of the Qiddiya location, serving as the primary liaison with local operating partners and government stakeholders, facilitating introductions and knowledge transfer to the Company's Chief Executive Officer or his designee(s), and supporting operations through and for 90 days following the grand opening. Under the Consulting Agreement, Mr. Bassoul will receive a total fee of $1,550,000, plus reimbursement of reasonable and necessary expenses. The Consulting Agreement contains customary terms, including confidentiality, limitation of liability, independent contractor status, non-solicitation,dispute resolution, mutual indemnification and a limited non-compete.

The foregoing description of the Consultant Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Consultant Agreement, a copy of which will be filed as an exhibit to the Company's next Annual Report on Form 10-K.