Sec Form 3 Filing - Elliott Todd L @ Celanese Corp - 2019-04-17

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Elliott Todd L 2. Issuer Name and Ticker or Trading Symbol Celanese Corp [ CE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP, Acetyl Chain (Last) (First) (Middle) C/O CELANESE CORPORATION, 222 W LAS COLINAS BLVD, STE 900N 3. Date of Earliest Transaction (MM/DD/YY) 04/17/2019 (Street) IRVING, TX75039 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 32,912.61 ( 1 ) D Common Stock 1,405.02 I by 401(k) Plan

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Elliott Todd L C/O CELANESE CORPORATION 222 W LAS COLINAS BLVD, STE 900N IRVING, TX75039 SVP, Acetyl Chain Signatures /s/ James R. Peacock III, Attorney-in-Fact for Todd L. Elliott 04/25/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes 2,128, 600, and 1,044 time-vesting restricted stock units ("RSUs") granted pursuant to the Company's 2009 Global Incentive Plan, as amended, on December 8, 2016, February 9, 2017 and February 8, 2018, respectively. Also includes 2,554 RSUs granted pursuant to the Company's 2018 Global Incentive Plan on February 6, 2019. Subject to continued employment, the RSUs vest as follows: 2,128 RSUs on December 8, 2019, 514 RSUs on February 8, 2020, 1,442 RSUs on February 15, 2020, 530 RSUs on February 8, 2021, 842 RSUs on February 15, 2021 and 870 RSUs on February 15, 2022.

Remarks: Exhibit List: Exhibit 24 - Power of Attorney

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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