X0508 4 2025-12-09 0 0001306830 Celanese Corp CE 0002000660 Kyrish Chuck C/O 222 W LAS COLINAS BLVD, SUITE 900N IRVING TX 75039 0 1 0 0 SVP & CFO 0 Common Stock 2025-12-09 4 P 0 5000 41.03 A 10914.476 D The reported price in this line is a weighted average sales price. These shares were sold in multiple transactions at prices ranging from $40.885 to $41.112. The reporting person will provide to the Company, any security holder of the Company, or the staff of the SEC, upon request, full information regarding the number of shares sold at each price. /s/ Blake Feikema, Attorney-in-Fact for Chuck Kyrish 2025-12-11