0000893750-05-000070 4 1 20050125 20050127 20050127 PETERSON PETER G 0001070843 4 34 001-32410 05555525 2129352626 C/O THE BLACKSTONE GROUP 345 PARK AVE NEW YORK NY 10154 Celanese CORP 0001306830 2810 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 4 1 form_4ex.xml 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 PETERSON PETER G Celanese CORP [ CE ] Issuer (Check all applicable) _____ Director __X__ (Last) (First) (Middle) 3. Date of Earliest 10% Owner C/O THE BLACKSTONE GROUP, 345 Transaction (MM/DD/YYYY) _____ Officer (give title PARK AVENUE 1/25/2005 below) _____ Other (specify below) (Street) 4. If Amendment, Date 6. Individual or NEW YORK, NY 10154 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. 2A. 3. Trans. 4. Securities 5. Amount of 6. Ownership 7. Nature of (Instr. 3) Trans. Deemed Code Acquired (A) or Securities Form: Direct Indirect Date Execution (Instr. 8) Disposed of (D) Beneficially (D) or Beneficial Date, if (Instr. 3, 4 and Owned Indirect (I) Ownership any 5) Following (Instr. 4) (Instr. 4) Reported Transaction(s) (Instr. 3 and 4) (A) or Code V Amount (D) Price Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) 1. Title of 2. 3. Trans. Date 3A. 4. Trans. 5. Number of 6. Date Exercisable 7. Title and Amount of 8. Price 9. Number of 10. 11. Nature of Derivate Security Conversion Deemed Code Derivative and Expiration Date Securities Underlying of derivative Ownership Indirect (Instr. 3) or Execution (Instr. 8) Securities Acquired Derivative Security Derivative Securities Form of Beneficial Exercise Date, if (A) or Disposed of (Instr. 3 and 4) Security Beneficially Derivative Ownership Price of any (D) (Instr. 5) Owned Security: (Instr. 4) Derivative (Instr. 3, 4 and 5) Following Direct (D) Security Reported or Transaction(s) Indirect Date Expiration Amount or (Instr. 4) (I) Exercisable Date Title Number of (Instr. 4) Code V (A) (D) Shares Non-Qualified Series A See Stock Option $16.00 1/25/2005 A 123110 (1) 1/25/2015 Common 123110 $0 123110 I Footnote (2) (right to buy) Stock Explanation of Responses: (1) All rights to the non-qualified stock options have been issued to Blackstone Management Partners IV L.L.C. ("BMP IV LLC") in connection with the services of Messrs. Chinh E. Chu, Benjamin J. Jenkins, Anjan Mukherjee, Hanns Ostmeier and James A. Quella as directors of the Issuer. The options vest with respect to 25% of the option shares on January 25, 2005, and subject to continued service of Messrs. Chinh E. Chu, Benjamin J. Jenkins, Anjan Mukherjee, Hanns Ostmeier and James A. Quella as directors of the Issuer, with respect to 25% on each of December 31, 2005, December 31, 2006 and December 31, 2007. (2) The Reporting Person is a controlling person of BMP IV LLC and, as such, may be deemed to share beneficial ownership of the securities held by BMP IV LLC. Pursuant to Rule 16a-1(a)(4) of the Securities Exchange Act of 1934, as amended, the Reporting Person herein states that this filing shall not be deemed an admission that he is the beneficial owner of any of the securities covered by this Statement. The Reporting Person disclaims beneficial ownership of the securities, except to the extent of his pecuniary interest in such securities. Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other PETERSON PETER G C/O THE BLACKSTONE GROUP X 345 PARK AVENUE NEW YORK, NY 10154 Signatures /s/ Peter G. Peterson 1/27/2005 ** 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.