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Form SCHEDULE 13G/A Six Flags Entertainment Filed by: DARLINGTON PARTNERS CAPITAL MANAGEMENT, LP

May 15, 2026 4:37 PM





Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G




Comment for Type of Reporting Person: Percentage calculated based on 101,987,541 shares of Common Stock outstanding on March 27, 2026, as reported in the proxy statement filed by the Issuer on April 9, 2026.


SCHEDULE 13G




Comment for Type of Reporting Person: Percentage calculated based on 101,987,541 shares of Common Stock outstanding on March 27, 2026, as reported in the proxy statement filed by the Issuer on April 9, 2026.


SCHEDULE 13G




Comment for Type of Reporting Person: Percentage calculated based on 101,987,541 shares of Common Stock outstanding on March 27, 2026, as reported in the proxy statement filed by the Issuer on April 9, 2026.


SCHEDULE 13G




Comment for Type of Reporting Person: Percentage calculated based on 101,987,541 shares of Common Stock outstanding on March 27, 2026, as reported in the proxy statement filed by the Issuer on April 9, 2026.


SCHEDULE 13G




Comment for Type of Reporting Person: Percentage calculated based on 101,987,541 shares of Common Stock outstanding on March 27, 2026, as reported in the proxy statement filed by the Issuer on April 9, 2026.


SCHEDULE 13G



Darlington Partners Capital Management, LP
Signature:/s/ Scott W. Clark
Name/Title:Manager of Darlington Partners GP, LLC, general partner of Darlington Partners Capital Management, LP
Date:05/15/2026
Darlington Partners GP, LLC
Signature:/s/ Scott W. Clark
Name/Title:Manager
Date:05/15/2026
Darlington Partners, L.P.
Signature:/s/ Scott W. Clark
Name/Title:Manager of Darlington Partners GP, LLC, general partner of Darlington Partners, L.P.
Date:05/15/2026
Scott W. Clark
Signature:/s/ Scott W. Clark
Name/Title:Reporting person
Date:05/15/2026
Ramsey B. Jishi
Signature:/s/ Ramsey B. Jishi
Name/Title:Reporting person
Date:05/15/2026
Exhibit Information

Exhibit 99.1 - Agreement Regarding Joint Filing of Statement on Schedule 13D or 13G

ATTACHMENTS / EXHIBITS

JT. FILING AGREEMENT

Categories

SEC Filings