FORM 4 [ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      
1. Name and Address of Reporting Person * Bracey Esi Eggleston 2. Issuer Name and Ticker or Trading Symbol Six Flags Entertainment Corp [ SIX ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)         (First)         (Middle)
C/O SIX FLAGS ENTERTAINMENT CORPORATION, 1000 BALLPARK WAY, SUITE 400
3. Date of Earliest Transaction (MM/DD/YYYY)
5/5/2021
(Street)
ARLINGTON, TX 76011
(City)       (State)       (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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 $0.025 per share  5/5/2021    A    3690 (1) A $43.36  11674  D   
Common Stock, par value $0.025 per share  5/5/2021    A    2318 (2) A $43.36  13992  D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 of Derivative Security: 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)  Subject to vesting on the earlier of (i) the day immediately prior to the first annual meeting of stockholders of the Issuer after the Grant Date or (ii) the first anniversary of the Grant Date.
(2)  Represents deferral of director cash compensation into stock units pursuant to the Issuer's director cash retainer deferral program under the Issuer's Long-Term Incentive Plan.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Bracey Esi Eggleston
C/O SIX FLAGS ENTERTAINMENT CORPORATION
1000 BALLPARK WAY, SUITE 400
ARLINGTON, TX 76011
X



Signatures
/Esi Eggleston Bracey/ 5/7/2021
**Signature of Reporting Person Date
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