Six Flags Entertainment Corporation SEC Filings

Tim Fisher, Chief Operating Officer of Six Flags Entertainment Corporation (FUN), reported a tax-withholding disposition related to vested restricted stock. On 08/22/2025 he had 21,850 shares withheld and disposed at an average price of $25.59 to satisfy tax obligations tied to a restricted stock award that vested the same day. After the withholding, Mr. Fisher beneficially owns 241,334 shares. The filing is a routine Section 16 report documenting the withholding and transfer of shares to cover taxes on equity vesting.

Six Flags Entertainment Corporation reported results of a non-binding advisory vote on the frequency of future say-on-pay votes held at its 2025 Annual Meeting. Shareholders cast 77,006,513 votes for holding the vote every year, 268,913 for every two years, 317,291 for every three years, and 189,554 abstained, with 12,479,799 broker non-votes. Based on these results, the Board of Directors determined the company will continue to hold an advisory say-on-pay vote annually. The Board expects the next advisory vote on the frequency of say-on-pay votes to occur at the company’s 2031 annual meeting of stockholders.

Darlington Partners reported beneficial ownership of 8,700,000 shares of Six Flags Entertainment Corporation common stock, representing 8.6% of the outstanding class. The filing shows the reporting persons—Darlington Partners Capital Management, LP; Darlington Partners GP, LLC; Darlington Partners, L.P.; Scott W. Clark; and Ramsey B. Jishi—each hold shared voting and dispositive power over the 8,700,000 shares and state they have no sole voting or dispositive power over the position. The percentage is calculated using 101,101,235 shares outstanding as of May 2, 2025, per the issuer's disclosure. The statement certifies the securities are held in the ordinary course of business and were not acquired to change or influence control of the issuer, and the filers disclaim membership in a group.

Steven E. Hoffman, a director of Six Flags Entertainment Corporation (FUN), purchased 10,058 shares of common stock in two non-derivative transactions on 08/07/2025. He acquired 5,014 shares at a weighted-average price of $24.54 (individual trades ranged $24.00–$24.93) and 5,044 shares at a weighted-average price of $24.79 (individual trades ranged $24.4046–$24.9775). The filing reports his direct beneficial ownership rising to 8,429 shares after the first purchase and to 13,473 shares after the second. The Form 4 shows only these stock purchases and no derivative instruments were reported.

Event: On August 6, 2025, Six Flags Entertainment Corporation filed an 8-K announcing an executive leadership transition.

Key facts:

• Richard Zimmerman, President and Chief Executive Officer, will step down by the end of 2025.
• Zimmerman will continue to serve as CEO until the Board appoints a successor and will remain a member of the Board.
• The transition is described as without cause and not due to any disagreement with the Board, Company, or management.
• The Board’s Nominating & Corporate Governance Committee has initiated a CEO search and will hire a leading global executive search firm.
• A press release is attached as Exhibit 99.1 to the 8-K; report signed by CFO Brian C. Witherow on August 6, 2025.

Six Flags Entertainment (NYSE:FUN) filed a Form 4 stating that director Sandra B. Cochran acquired 3,415 deferred stock units on 06/25/2025. The grant was made under the company’s omnibus deferred‐compensation plan and each unit is economically equivalent to one common share.

Following the award, Cochran beneficially owns 3,415 derivative securities, held directly. The units are payable in stock, cash, or a mix when her board service ends. No open-market purchase, sale, or cash consideration was reported.