0001306830-20-000192 4 1 20201015 20201019 20201019 Brown William M 0001350633 4 34 001-32410 201246400 HARRIS CORPORATION 1025 W NASA BOULEVARD MELBOURNE FL 32919 Celanese Corp 0001306830 2820 980420726 DE 1231 222 W. LAS COLINAS BLVD., SUITE 900N IRVING TX 75039-5421 972-443-4000 222 W. LAS COLINAS BLVD., SUITE 900N IRVING TX 75039-5421 Celanese CORP 20041102 Blackstone Crystal Holdings Capital Partners (Cayman) IV Ltd. 20041022 4 1 wf-form4_160313881839540.xml FORM 4 X0306 4 2020-10-15 0 0001306830 Celanese Corp CE 0001350633 Brown William M C/O CELANESE CORPORATION 222 W LAS COLINAS BLVD, SUITE 900N IRVING TX 75039 1 0 0 0 Phantom Stock 2020-10-15 4 A 0 54.916 119.50 A Common Stock 54.916 7396.166 D Each share of phantom stock represents the right to receive the cash value of one share of Common Stock. The reported phantom stock represents the person's quarterly cash retainer for service as a director which has been deferred under the Company's 2008 Deferred Compensation Plan (the "Plan"). As provided in the Plan, the reporting person may transfer a portion of the phantom stock account into an alternative investment account at any time, and on the earlier of the date previously elected by the reporting person to receive a payment or the termination of the reporting person's service as a director of the Company, the shares of phantom stock become payable in either cash or shares of Common Stock. /s/ Adam R. Santosuosso, Attorney-in-Fact for William M. Brown 2020-10-19