5.02(b) On September 12, 2017, Patrick D. Quarles, Executive Vice President and President, Acetyl Chain, Manufacturing and Global Supply Chain, notified Celanese Corporation (the “Company”) of his resignation as an officer of the Company to pursue other interests. The resignation is effective September 29, 2017. Mr. Quarles will continue as an employee until December 31, 2017, to facilitate a smooth transition.

About Celanese Corporation (NYSE:CE)

Celanese Corporation (Celanese) is a technology and specialty materials company. The Company operates through four segments: Advanced Engineered Materials, Consumer Specialties, Industrial Specialties and Acetyl Intermediates. Its business involves processing chemical raw materials, such as methanol, carbon monoxide, ethylene and natural products, including wood pulp, into chemicals, thermoplastic polymers and other chemical-based products. It engineers and manufactures a range of products, which serves a range of end-use applications, including paints and coatings, textiles, automotive applications, consumer and medical applications, performance industrial applications, filtration applications, paper and packaging, chemical additives, construction, consumer and industrial adhesives, and food and beverage applications. The Company operates in North America, Europe and Asia and consists of approximately 20 global production facilities.