FUN chair awarded 217,797 Six Flags shares

HADDRILL RICHARD M reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

HADDRILL RICHARD M reported acquisition or exercise transactions in this Form 4 filing.

Six Flags Entertainment Corporation/NEW Executive Chair Richard M. Haddrill received a stock grant of 217,797 shares of common stock as compensation. The award carried a stated price of $0.00 per share and was issued under the company’s 2024 Omnibus Incentive Plan. Following this grant, Haddrill directly holds 220,117 shares of common stock.

Insider Trade Summary

Grant/Award: 217,797 shares

Grant/Award 1 txn

Insider HADDRILL RICHARD M

Role Executive Chair

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, par value $0.01 per share	217,797	$0.00	$0.00

Holdings After Transaction: Common Stock, par value $0.01 per share — 220,117 shares (Direct)

Footnotes (1)

1. F1. This award was granted pursuant to the Company's 2024 Omnibus Incentive Plan.

Key Figures

Shares granted: 217,797 shares Grant price: $0.00 per share Shares held after: 220,117 shares

3 metrics

Shares granted 217,797 shares Grant/award acquisition on transaction date

Grant price $0.00 per share Stated transaction price for awarded shares

Shares held after 220,117 shares Total direct holdings following the grant

Key Terms

2024 Omnibus Incentive Plan, grant/award acquisition, Common Stock, par value $0.01 per share

3 terms

2024 Omnibus Incentive Plan financial

"This award was granted pursuant to the Company's 2024 Omnibus Incentive Plan."

grant/award acquisition financial

"transaction_action: grant/award acquisition"

Common Stock, par value $0.01 per share financial

"security_title: Common Stock, par value $0.01 per share"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did FUN director Richard M. Haddrill report?

Executive Chair Richard M. Haddrill reported receiving a grant of 217,797 shares of Six Flags common stock. The shares were awarded at a stated price of $0.00 per share as part of his compensation under the 2024 Omnibus Incentive Plan.

Was the FUN insider transaction an open-market purchase or a compensation grant?

The FUN insider transaction was a compensation grant, not an open-market purchase. The Form 4 shows transaction code A, described as a grant or award acquisition, with 217,797 shares issued at a price of $0.00 per share under the 2024 Omnibus Incentive Plan.

How many FUN shares does Richard M. Haddrill own after this Form 4 transaction?

After the Form 4 transaction, Richard M. Haddrill directly holds 220,117 shares of Six Flags common stock. This total reflects his position immediately following the 217,797-share grant reported for the transaction date listed in the filing.

What plan governed the 217,797-share award reported for FUN?

The 217,797-share award to Richard M. Haddrill was granted under Six Flags’ 2024 Omnibus Incentive Plan. This plan is used to provide equity-based compensation, and the footnote explicitly states the grant was made pursuant to that incentive plan.

Did the FUN Form 4 show any insider sales or dispositions?

The Form 4 for FUN did not show any insider sales or dispositions. It reported a single acquisition transaction coded A, indicating a grant or award of 217,797 shares, with no corresponding sale, gift, tax withholding, or restructuring entries disclosed in the transaction summary.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/20/2026 - 05:48 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

HADDRILL RICHARD M

(Last) (First) (Middle)

C/O SIX FLAGS ENTERTAINMENT CORPORATION

8701 RED OAK BLVD

(Street)

CHARLOTTE NORTH CAROLINA 28217

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Six Flags Entertainment Corporation/NEW [ FUN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Chair

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/16/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.01 per share	04/16/2026		A		217,797(1)	A	$0	220,117	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This award was granted pursuant to the Company's 2024 Omnibus Incentive Plan.

Remarks:

	/s/ Richard M. Haddrill	04/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)