SEC FORM 3

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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1. Name and Address of Reporting Person^*

Spiegel Marilyn G

(Last)

(First)

(Middle)

8701 RED OAK BLVD.

(Street)

CHARLOTTE

28217

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
07/01/2024

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

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

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

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock, par value $0.01 per share	10,162	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:

Remarks:

Pursuant to the Agreement and Plan of Merger, dated as of November 2, 2023 (the "Merger Agreement"), by and among the Issuer (f/k/a CopperSteel HoldCo, Inc.), Six Flags Entertainment Corporation ("Former Six Flags), Cedar Fair, L.P. ("Cedar Fair") and CopperSteel Merger Sub, LLC, on July 1, 2024, each unit of limited partner interest of Cedar Fair was converted into the right to receive one share of common stock of the Issuer and each share of common stock of Former Six Flags was converted into the right to receive 0.58 shares of common stock of the Issuer ("Six Flags Conversion Ratio"). In accordance with the terms of the Merger Agreement, all equity awards held by the Reporting Person with respect to shares of common stock of Former Six Flags were converted into, as adjusted by the Six Flags Conversion Ratio, shares of common stock of the Issuer. Exhibit 24 - Power of Attorney, incorporated herein by reference.

	/s/ Marilyn G. Spiegel	07/01/2024
	** 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 5 (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.
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