0001306830-23-000033 4 1 20230228 20230302 20230302 Puckett A. Lynne 0001502389 4 34 001-32410 23700303 C/O 222 W LAS COLINAS BLVD, SUITE 900N IRVING TX 75039 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_167779543084081.xml FORM 4 X0306 4 2023-02-28 0 0001306830 Celanese Corp CE 0001502389 Puckett A. Lynne C/O CELANESE CORPORATION 222 W. LAS COLINAS BLVD., SUITE 900N IRVING TX 75039 0 1 0 0 SVP, GC & Sec Nonqualified Stock Option (right to buy) 116.93 2023-02-28 4 A 0 11551 0 A 2033-02-27 Common Stock 11551.0 11551 D Time-based employee stock options granted under the Company's 2018 Global Incentive Plan. The options vest and become exercisable, subject to continued employment, in three annual installments of 33%, 33% and 34% beginning February 15, 2024. /s/ Adam R. Santosuosso, as Attorney-in-Fact for A. Lynne Puckett 2023-03-02