X0508 4 2026-02-15 0 0001306830 Celanese Corp CE 0002000487 Duffie Ashley B C/O 222 W LAS COLINAS BLVD, SUITE 900N IRVING TX 75039 0 1 0 0 SVP & GC 0 Common Stock 2026-02-15 4 A 0 618 0 A 21077 D Common Stock 2026-02-15 4 F 0 183 59.12 D 20894 D Common Stock 633.396 I By 401(k) Plan Represents performance-based restricted stock units ("PRSUs") granted to the reporting person on February 8, 2023 under the Company's 2018 Global Incentive Plan, as amended, which have vested and been settled. Shares withheld for the payment of taxes on the vesting and settlement of PRSUs. /s/ Christine Dryden, Attorney-in-Fact for Ashley B. Duffie 2026-02-18