X0304 4 2011-10-03 0 0001306830 Celanese CORP CE 0001340482 Sterin Steven C/O CELANESE CORPORATION 1601 W. LBJ FREEWAY DALLAS TX 75234 0 1 0 0 SVP & CFO Series A Common Stock 2011-10-03 4 A 0 9052 0 A 27070 D Series A Common Stock 1022.80 I By 401(k) Plan Non-Qualified Stock Option (right to buy) 32.51 2011-10-03 4 A 0 20850 0 A 2018-10-01 Series A Common Stock 20850 20850 D Restricted stock units granted pursuant to the Company's 2009 Global Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of Series A Common Stock. The restricted stock units will vest, subject to continued employment, with respect to 30% of the restricted stock units on October 1, 2012, with respect to 30% of the restricted stock units on October 1, 2013, and with respect to 40% of the restricted stock units on October 1, 2014. Represents equivalent shares of Series A Common Stock held by the reporting person under the Celanese Americas Retirement Savings Plan as of September 30, 2011. Granted pursuant to the Company's 2009 Global Incentive Plan. The options will vest, subject to continued employment, with respect to 25% of the options on each of October 1, 2012, October 1, 2013, October 1, 2014 and October 1, 2015. /s/ James R. Peacock III, Attorney-in-Fact for Steven Sterin 2011-10-05