Six Flags executive reports tax share withholding

Six Flags Entertainment Corporation/NEW executive Tayfun Tastepe reported a routine tax-related share disposition.

Rhea-AI Filing Summary

Six Flags Entertainment Corporation/NEW executive Tayfun Tastepe reported a routine tax-related share disposition. On February 23, 2026, 3,639 common shares were withheld to cover tax liabilities tied to vesting restricted stock and restricted stock units. After this withholding, he directly holds 29,662 common shares.

Insider Trade Summary

Exercise Price or Tax Liability: 3,639 shares

Exercise Price or Tax Liability 1 txn

Insider Tastepe Tayfun

Role Chief Digital & Tech Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock, par value $0.01 per share	3,639	$18.24	$66K

Holdings After Transaction: Common Stock, par value $0.01 per share — 29,662 shares (Direct)

Footnotes (1)

1. F1. Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

FAQ

What insider transaction did FUN executive Tayfun Tastepe report?

Tayfun Tastepe reported a tax-withholding disposition of 3,639 FUN common shares. The shares were withheld to cover tax liabilities from vesting restricted stock and restricted stock units that vested on February 23, 2026, rather than sold in an open-market transaction.

Was the FUN Form 4 transaction an open-market sale of shares?

No, the FUN Form 4 reports a tax-withholding disposition, not an open-market sale. Shares were withheld by the company to satisfy tax obligations triggered when previously granted restricted stock and restricted stock units vested on February 23, 2026.

How many FUN shares were withheld for taxes in this Form 4?

A total of 3,639 FUN common shares were withheld to pay tax liabilities. This withholding was connected to the vesting of previously reported awards of restricted stock and restricted stock units that vested on February 23, 2026, according to the Form 4 footnote.

How many FUN shares does Tayfun Tastepe own after this transaction?

After the tax-withholding disposition, Tayfun Tastepe directly owns 29,662 FUN common shares. This post-transaction holding reflects his remaining direct ownership following the 3,639 shares withheld to cover tax obligations on the vesting equity awards.

What role does Tayfun Tastepe hold at Six Flags Entertainment (FUN)?

Tayfun Tastepe serves as Chief Digital & Tech Officer at Six Flags Entertainment Corporation/NEW. The Form 4 identifies him as an officer, reporting this tax-withholding disposition related to vesting restricted stock and restricted stock unit awards in FUN common shares.

Why were FUN shares withheld instead of paying taxes in cash?

FUN shares were withheld as payment of tax liability linked to equity vesting, a common administrative practice. Instead of paying cash, a portion of the vested restricted stock and restricted stock units was retained to satisfy withholding taxes on February 23, 2026.

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Accepted by SEC EDGAR 02/25/2026 - 04:20 PM 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
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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^*

Tastepe Tayfun

(Last) (First) (Middle)

8701 RED OAK BLVD.

(Street)

CHARLOTTE NC 28217

(City) (State) (Zip)

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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Digital & Tech Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

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

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

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

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	02/23/2026		F		3,639(1)	D	$18.24	29,662	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. Shares withheld in payment of tax liability in connection with the vesting of a previously reported awards of restricted stock and restricted stock units, which vested February 23, 2026.

Remarks:

	/s/ Tayfun Tastepe	02/24/2026
	** 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.