X0304 4 2011-09-06 0 0000701374 Six Flags Entertainment Corp SIX 0001205647 REID-ANDERSON JAMES C/O SIX FLAGS ENTERTAINMENT CORPORATION 924 AVENUE J EAST GRAND PRAIRIE TX 75050 1 1 0 0 Chairman, President & CEO Common Stock, par value $0.025 per share 2011-09-06 4 M 0 200000 15.995 A 575518 D Employee Stock Option (Right to Buy) 15.995 2011-09-06 4 M 0 200000 0 D 2020-08-12 Common Stock 200000 1256762 D Mr. Reid-Anderson was granted an option to purchase 1,456,762 shares (adjusted for June 27, 2011 stock split) on August 12, 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. /s/ James Reid-Anderson 2011-09-06