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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
701374	Six Flags Entertainment Corp	SIX	Services-Miscellaneous Amusement & Recreation (7990)	133995059

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1498590	Jr Alexander Weber	C/O Six Flags Entertainment Corporation 924 Avenue J East Grand Prairie TX 75050	Chief Operating Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock, Par Value $0.025 Per Share	Acquisiton	2012-09-07	32,143	$20.01	198,563	No	4	M	Direct
Common Stock, Par Value $0.025 Per Share	Disposition	2012-09-07	18,965	$57.14	179,598	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock, Par Value $0.025 Per Share	Employee Stock Option (Right to Buy)	Disposition	2012-09-07	32,143	$20.01	32,143	$20.01

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
96,429		2020-09-07	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock, Par Value $0.025 Per Share	2,000	Indirect	In trust for reporting person's son
Common Stock, Par Value $0.025 Per Share	2,000	Indirect	In trust for reporting person's daughter

Footnotes

The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Alexander Weber Jr. on June 26, 2012.
Includes certain restricted stock units subject to vesting.
The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $56.6044 to $57.68, inclusive. The reporting person undertakes to provide Issuer, any security holder of Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
The reporting person disclaims beneficial interest in such shares except to the extent of his pecuniary interest therein.
Mr. Weber was granted an option to purchase 128,572 shares (as adjusted for June 27, 2011 stock split) on September 7, 2010, which vests 25% on each of the first four anniversaries of the grant date if the reporting person has been continuously employed with the Issuer through such date, subject to accelerated vesting in certain events, including certain terminations or upon a change in control, or as provided for by the Compensation Committee of the Issuer's Board of Directors.