0001306830-23-000035 4 1 20230228 20230302 20230302 Ryerkerk Lori 0001449522 4 34 001-32410 23700349 AXALTA COATING SYSTEMS LTD. 2001 MARKET STREET, SUITE 3600 PHILADELPHIA PA 19103 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_167779561906721.xml FORM 4 X0306 4 2023-02-28 0 0001306830 Celanese Corp CE 0001449522 Ryerkerk Lori C/O CELANESE CORPORATION 222 W LAS COLINAS BLVD, STE 900N IRVING TX 76039 1 1 0 0 Chairman and CEO Nonqualified Stock Option (right to buy) 116.93 2023-02-28 4 A 0 78382 0 A 2033-02-27 Common Stock 78382.0 78382 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, Attorney-in-Fact for Lori Ryerkerk 2023-03-02