Vanguard lists 0% stake in Six Flags Corp (NYSE: FUN) after amendment

Rhea-AI Filing Summary

Six Flags Entertainment Corp ownership update: The Vanguard Group filed an Amendment No. 11 to its Schedule 13G/A stating it beneficially owns 0 shares of common stock, representing 0% of the class. The filing explains an internal realignment effective January 12, 2026 under SEC Release No. 34-39538, after which certain Vanguard subsidiaries report ownership separately. The form is signed by Ashley Grim, Head of Global Fund Administration, dated 03/27/2026.

Insights

Institutional Ownership Analyst

Vanguard reports no current beneficial stake in Six Flags after reorganization.

The filing records 0 shares and 0% beneficial ownership, reflecting Vanguard's internal disaggregation after its January 12, 2026 realignment. This indicates the reporting entity here holds no voting or dispositive power over Six Flags common stock.

Cash‑flow treatment and any holdings by related subsidiaries are separately reported per the cited SEC release; subsequent filings from Vanguard affiliates would show any actual positions.

Corporate Governance Specialist

Amendment clarifies reporting structure, not a change in Six Flags governance.

The amendment cites SEC Release No. 34-39538 and states certain subsidiaries now report on a disaggregated basis following Vanguard's internal realignment. The filing documents no sole or shared voting or dispositive power (all zeros).

Stakeholders seeking position detail should review separate Schedule 13 filings from Vanguard subsidiaries; this amendment itself does not indicate a governance shift at Six Flags.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 11)

Six Flags Entertainment Corp

(Name of Issuer)

Common Stock

(Title of Class of Securities)

83001C108

(CUSIP Number)

03/13/2026

(Date of Event Which Requires Filing of this Statement)

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

CUSIP Number(s): 83001C108

1

Names of Reporting Persons

The Vanguard Group

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

PENNSYLVANIA

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

0.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0 %

12

Type of Reporting Person (See Instructions)

IA

Comment for Type of Reporting Person: On January 12, 2026, The Vanguard Group, Inc. went through an internal realignment. In accordance with SEC Release No. 34-39538 (January 12, 1998), certain subsidiaries or business divisions of subsidiaries of The Vanguard Group, Inc., that formerly had, or were deemed to have, beneficial ownership with The Vanguard Group, Inc., will report beneficial ownership separately (on a disaggregated basis) from The Vanguard Group, Inc. in reliance on such release. These subsidiaries and/or business divisions pursue the same investment strategies as previously pursued by The Vanguard Group, Inc. prior to the realignment. Further in accordance with SEC Release No. 34-39538 (January 12, 1998), The Vanguard Group, Inc. no longer has, or is deemed to have, beneficial ownership over securities beneficially owned by such subsidiaries and/or business divisions.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Six Flags Entertainment Corp
(b)	Address of issuer's principal executive offices: 8701 Red Oak Blvd, Charlotte, NC, 28217
Item 2.
(a)	Name of person filing: The Vanguard Group
(b)	Address or principal business office or, if none, residence: 100 Vanguard Blvd.,, Malvern, PA, 19355
(c)	Citizenship: PA
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.:
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 0
(b)	Percent of class: 0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 0
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 0
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The Vanguard Group, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities reported herein.No one other person's interest in the securities reported herein is more than 5%.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

The Vanguard Group

Signature:	Ashley Grim
Name/Title:	Head of Global Fund Administration
Date:	03/27/2026

FAQ

What stake does The Vanguard Group report in Six Flags (FUN)?

The Vanguard Group reports 0 shares of Six Flags common stock, representing 0% of the class. The filing shows no sole or shared voting or dispositive power and was signed on 03/27/2026.

Why does Vanguard say it changed how it reports ownership?

Vanguard describes an internal realignment effective January 12, 2026, and cites SEC Release No. 34-39538. Certain subsidiaries now report beneficial ownership separately, disaggregating positions previously attributed to The Vanguard Group.

Does this amendment indicate Vanguard sold its Six Flags shares?

The amendment states Vanguard's reported beneficial ownership is 0 shares and attributes the change to internal disaggregation per the cited SEC release. The filing does not describe any specific sale transaction or proceeds.

Who signed the Schedule 13G/A amendment for Vanguard?

The filing is signed by Ashley Grim, Head of Global Fund Administration, with the signature date shown as 03/27/2026. The signature attests to the reported ownership and disclosures in the amendment.

Will Vanguard subsidiaries report their Six Flags holdings separately?

Yes. The amendment states certain Vanguard subsidiaries and business divisions will report beneficial ownership separately in reliance on SEC Release No. 34-39538, following the firm’s internal realignment on January 12, 2026.