0001140361-08-023993 4 1 20081027 20081029 20081029 Celanese CORP 0001306830 2820 980420726 DE 1231 1601 W. LBJ FREEWAY DALLAS TX 75234 972-443-4000 1601 W. LBJ FREEWAY DALLAS TX 75234 Blackstone Crystal Holdings Capital Partners (Cayman) IV Ltd. 20041022 ODwyer John 0001314816 4 34 001-32410 081148819 972-443-4000 1601 W. LBJ FREEWAY DALLAS TX 75234 4 1 doc1.xml FORM 4 FORM 4 OMB APPROVAL [ ] Check this OMB Number: box if no longer UNITED STATES SECURITIES AND EXCHANGE COMMISSION 3235-0287 subject to Washington, D.C. 20549 Estimated Section 16. Form STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF average burden 4 or Form 5 SECURITIES hours per obligations may response... 0.5 continue. See Instruction 1(b). Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940 1. Name and Address of Reporting 2. Issuer Name and Ticker 5. Relationship of Person * or Trading Symbol Reporting Person(s) to ODwyer John Celanese CORP [ CE ] Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title (Last) (First) (Middle) 3. Date of Earliest below) _____ Other C/O CELANESE CORPORATION, 1601 W. Transaction (MM/DD/YYYY) (specify below) LBJ FREEWAY 10/27/2008 EVP, Supply Management (Street) 4. If Amendment, Date 6. Individual or DALLAS, TX 75234 Original Filed Joint/Group Filing (Check (City) (State) (Zip) (MM/DD/YYYY) Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security 2. Trans. Date 2A. 3. Trans. 4. Securities 5. Amount of 6. Ownership 7. Nature of (Instr. 3) Deemed Code Acquired (A) or Securities Form: Direct Indirect Execution (Instr. 8) Disposed of (D) Beneficially (D) or Indirect Beneficial Date, if (Instr. 3, 4 and Owned Following (I) (Instr. 4) Ownership any 5) Reported (Instr. 4) Transaction(s) (A) (Instr. 3 and or 4) Code V Amount (D) Price Series A Common Stock 10/27/2008 P 5000 A $12.10 68431 D Series A Common Stock 10/28/2008 P 8500 A $11.50 76931 D Series A Common Stock 10/28/2008 P 4000 A $11.64 80931 D Series A Common Stock 10/28/2008 I 6492 A $12.02 13422 (1) I by 401(k) Plan Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) 1. Title of 2. 3. 3A. 4. Trans. 5. Number of 6. Date Exercisable 7. Title and Amount of 8. Price 9. Number of 10. 11. Nature Derivate Conversion Trans. Deemed Code Derivative and Expiration Date Securities Underlying of derivative Ownership of Security or Date Execution (Instr. 8) Securities Derivative Security Derivative Securities Form of Indirect (Instr. 3) Exercise Date, if Acquired (A) or (Instr. 3 and 4) Security Beneficially Derivative Beneficial Price of any Disposed of (D) (Instr. 5) Owned Security: Ownership Derivative (Instr. 3, 4 Following Direct (D) (Instr. 4) Security and 5) Reported or Transaction(s) Indirect Date Expiration Amount or (Instr. 4) (I) Exercisable Date Title Number of (Instr. 4) Code V (A) (D) Shares Explanation of Responses: (1) Includes 169 shares of Series A Common Stock acquired under Celanese Corporation's 401(k) Plan between March 3, 2008 and October 28, 2008. Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other ODwyer John C/O CELANESE CORPORATION EVP, Supply Management 1601 W. LBJ FREEWAY DALLAS, TX 75234 Signatures /s/ Robert L. Villasenor, Attorney-in-Fact for John A. O'Dwyer 10/29/2008 ** Signature of Reporting Person Date 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). ** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a). Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure. Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.