Supplemental Information Additional information about our prior period performance is included in our Quarterly Reports on Form 10-Q and in our Non-US GAAP Financial Measures and Supplemental Information document. Consolidated Statements of Operations - Unaudited Consolidated Balance Sheets - Unaudited Non-US GAAP Financial Measures and Supplemental Information August 11, 2025 In this document, the terms the "Company," "we" and "our" refer to Celanese Corporation and its subsidiaries on a consolidated basis. Purpose The purpose of this document is to provide information of interest to investors, analysts and other parties including supplemental financial information and reconciliations and other information concerning our use of non-US GAAP financial measures. This document is updated quarterly. Presentation This document presents the Company's two business segments, Engineered Materials and the Acetyl Chain.