8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): April 17, 2026 (April 16, 2026)

CELANESE CORPORATION

(Exact name of registrant as specified in its charter)

222 West Las Colinas Blvd. Suite 900N, Irving, TX 75039

(Address of Principal Executive Offices) (Zip Code)

Registrant's telephone number, including area code: (972) 443-4000

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐   Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐   Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

On April 16, 2026, Celanese Corporation (the "Company") held its 2026 Annual Meeting of Shareholders (the "2026 Annual Meeting"). The Company’s shareholders were asked to consider and vote upon the following proposals: (1) election of nine directors to the Board to serve for a term that expires at the annual meeting of shareholders in 2027 and until their successors are duly elected and qualified or their earlier resignation or retirement; (2) ratification of the selection of KPMG LLP as the Company’s independent registered public accounting firm for 2026; and (3) an advisory vote to approve executive compensation.

As of the 2026 Annual Meeting record date of February 23, 2026, there were 111,922,758 shares of the Company’s Common Stock issued and outstanding and entitled to be voted at the 2026 Annual Meeting, if represented in person or by proxy at the 2026 Annual Meeting. A total of 99,090,064 shares were voted in person or by proxy (88.53% quorum). For each proposal, the shareholder voting results were as follows:

1.    Election of Directors. Each of the director nominees was elected to serve for a term which expires at the annual meeting of shareholders in 2027 by the votes set forth in the table below.

2.    Ratification of the Selection of Independent Registered Public Accounting Firm. The selection of KPMG LLP as the Company’s independent registered public accounting firm for 2026 was ratified by the shareholders by the votes set forth in the table below.

3.    Advisory Vote to Approve Executive Compensation. Shareholders approved, on an advisory basis, the compensation of our named executive officers, as disclosed in the Proxy Statement, by the votes set forth in the table below.

Item 9.01    Financial Statements and Exhibits

(d)     Exhibits.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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