SCHEDULE: Darlington Partners Discloses 8.6% Stake in Six Flags

Darlington Partners Capital Management and related entities have disclosed an 8.6% beneficial ownership stake in Six Flags Entertainment Corporation, holding 8.7 million shares.

Summary

• Darlington Partners Capital Management, LP, along with its general partner Darlington Partners GP, LLC, and the private investment fund Darlington Partners, L.P., have reported beneficial ownership of 8,700,000 shares of Six Flags Entertainment Corporation's Common Stock.
• This ownership represents 8.6% of the outstanding Common Stock, calculated based on 101,101,235 shares outstanding as of May 2, 2025.
• Scott W. Clark and Ramsey B. Jishi, managers of Darlington Partners GP, LLC, are also listed as reporting persons, each beneficially owning 8,700,000 shares.
• All reporting persons hold shared voting and shared dispositive power over the 8,700,000 shares.
• The securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer, except for activities solely in connection with a nomination under Rule 14a-11.

Sentiment

Score: 6

Explanation: The sentiment is moderately positive. A significant institutional stake indicates investor confidence, and the explicit statement that the shares are held in the ordinary course of business and not for control (except for potential 14a-11 nominations) suggests a stable, long-term investment rather than an immediate disruptive activist play.

Positives

• A significant institutional investment of 8.6% by Darlington Partners indicates confidence in Six Flags Entertainment Corporation's long-term prospects.
• The filing explicitly states the shares were acquired and are held in the ordinary course of business, suggesting a passive investment rather than an immediate activist intent, which can provide stability.

Risks

• While the filing states the stake is not for control, the possibility of future engagement or influence, particularly concerning Rule 14a-11 nominations, remains a potential factor for corporate governance.

Future Outlook

This filing does not contain forward-looking statements or guidance regarding the issuer's future performance or operations.

Industry Context

This filing is a disclosure of a significant ownership stake by an investment firm in a major theme park operator, Six Flags Entertainment Corporation. Such disclosures are common in the investment landscape and reflect an investor's position in a company within the leisure and entertainment sector.

Stakeholder Impact

• Shareholders: The disclosure of a significant institutional stake could be viewed positively, signaling confidence from a major investor. It may also introduce the possibility of future shareholder engagement, particularly if the investor decides to pursue board nominations under Rule 14a-11.

Key Dates

Keywords

Six Flags Entertainment Corporation, Darlington Partners, Common Stock, Beneficial Ownership, Institutional Investor, SEC Filing, Schedule 13G, Theme Parks, Entertainment Industry