0001306830-20-000129 4 1 20200430 20200504 20200504 WULFF JOHN K 0001257328 4 34 001-32410 20845184 C/O HERCULES INC 1313 NORTH MARKET STREET WILMINGTON DE 19894-0001 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_158862377123499.xml FORM 4 X0306 4 2020-04-30 0 0001306830 Celanese Corp CE 0001257328 WULFF JOHN K C/O CELANESE CORPORATION 222 W. LAS COLINAS BLVD., SUITE 900N IRVING TX 75039-5421 1 0 0 0 Common Stock 2020-04-30 4 A 0 1849 0 A 21721 D Annual grant of restricted stock units pursuant to the Company's 2018 Global Incentive Plan. The restricted stock units vest in full on the one-year anniversary of the date of grant. /s/ James R. Peacock III, Attorney-in-Fact for John K. Wulff 2020-05-04