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): ~~May 5~~June 10, 2026 (June 10, 2026)

CELANESE CORPORATION

(Exact name of registrant as specified in its charter)

Delaware

001-32410

98-0420726

~~001-32410~~

~~98-0420726~~

(State or other jurisdictionof incorporation)

(Commission FileNumber)

(IRS EmployerIdentification No.)

(State or other jurisdiction of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

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

N/A

(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:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, par value $0.0001 per share	CE	The New York Stock Exchange
4.777% Senior Notes due 2026	CE /26A	The New York Stock Exchange
2.125% Senior Notes due 2027	CE /27	The New York Stock Exchange
0.625% Senior Notes due 2028	CE /28	The New York Stock Exchange
5.337% Senior Notes due 2029	CE /29A	The New York Stock Exchange
5.000% Senior Notes due 2031	CE /31	The New York Stock Exchange

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

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. ☐ ¨

1Item 8.01 Other Events.

~~Item 7~~On June 10, 2026, Celanese US Holdings LLC, a wholly owned subsidiary of Celanese Corporation, issued a notice of redemption for all of its outstanding 4.01777% ~~Regulation FD~~Senior ~~Disclosure~~Notes due July 19, 2026 (the “Notes”) pursuant to the indenture governing the Notes. The redemption is expected to occur on June 25, 2026 (the “Redemption Date”). The Notes are redeemable at a redemption price that will be equal to the sum of 100% of the principal amount of the Notes being redeemed plus accrued and unpaid interest thereon to the Redemption Date. This Form 8-K does not constitute a notice of redemption for the Notes.

On May 6, 2026, Scott A. Richardson, President, Chief Executive Officer and Director of Celanese Corporation (the "Company"), will make a presentation to investors and analysts via a webcast hosted by the Company at 10:00 a.m. ET (9:00 a.m. CT) regarding the Company's financial results for its first quarter 2026. The webcast, press release, prepared remarks from management and a slide presentation may be accessed on our website at investors.celanese.com under News & Events / Events Calendar. A copy of the prepared remarks and a copy of the slide presentation posted for the webcast are attached to this Current Report on Form 8-K ("Current Report") as Exhibit 99.1(a) and Exhibit 99.1(b), respectively, and are incorporated herein solely for purposes of this Item 7.01 disclosure. During the webcast, management may make, and management's prepared remarks and the attached slide presentation contain, references to certain Non-US GAAP financial measures. Non-US GAAP financial measures appearing in management's prepared remarks are defined and reconciled to the most comparable US GAAP financial measure in our Non-US GAAP Financial Measures and Supplemental Information document furnished with this Current Report as Exhibit 99.2 ~~(and available on our website) and incorporated herein solely for purposes of this Item 7.01 disclosure.~~

~~Item 9.01 Financial Statements and Exhibits~~SIGNATURES

~~(d) The~~Pursuant ~~following~~to ~~exhibits~~the ~~are~~requirements ~~being~~of ~~furnished~~the ~~herewith:~~Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

ExhibitNumber
	CELANESE CORPORATION
			Description
	By:	/s/ ASHLEY B. DUFFIE
99.1(a)			Prepared Remarks from Management dated May 5, 2026*
	Name:	Ashley B. Duffie
99.1(b)			Slide Presentation dated May 5, 2026*
	Title:	Senior Vice President, General Counsel and Corporate Secretary
99.2			Non-US GAAP Financial Measures and Supplemental Information dated May 5, 2026*
	Date:	June 10, 2026
104			Cover Page Interactive Data File (the cover page XBRL tags are embedded within the inline XBRL document contained in Exhibit 101)

* In connection with the disclosure set forth in Item3 7.01, the information in this Current Report, including the exhibits attached hereto, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of such section. The information in this Current Report, including the exhibits, shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of any incorporation by reference language in any such filing. This Current Report will not be deemed an admission as to the materiality of any information in this Current Report that is required to be disclosed solely by Regulation FD.

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.

			CELANESE CORPORATION
			By:			/s/ ASHLEY B. DUFFIE
			Name:			Ashley B. Duffie
			Title:			Senior Vice President, General Counsel and Corporate Secretary
			Date:			May 5, 2026

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