Ownership Submission
FORM 4
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 OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Glencore AG
   2. Issuer Name and Ticker or Trading Symbol
CENTURY ALUMINUM CO [CENX] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
BAARERMATTSTRASSE 3, P.O. BOX 666		 3. Date of Earliest Transaction (Month/Day/Year)
10/29/2009
(Street)

BAAR, V8 CH-6341		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
___ Form filed by One Reporting Person
_X_ 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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 10/29/2009   C   4,197,527 A (1) 34,450,828 D (2)  
Common Stock 10/30/2009   P   850,000 A $ 8.71 (3) 35,300,828 D (2)  

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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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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
(Month/Day/Year)		 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
Series A Convertible Preferred Stock (4) 10/29/2009   C     41,975.27   (4)   (4) Common Stock 4,197,527 (4) 91,677.76 D (4)  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Glencore AG
BAARERMATTSTRASSE 3
P.O. BOX 666
BAAR, V8 CH-6341		     X    
GLENCORE INTERNATIONAL AG
BAARERMATTSTRASSE 3
P. O. BOX 666
BAAR, V8 CH-6341		     X    
GLENCORE HOLDING AG
BAARERMATTSTRASSE 3
P.O. BOX 666
BAAR, V8 CH-6341		     X    

Signatures

 GLENCORE AG, by: /s/ Lotti Grenacher Hagmann, Officer, /s/ Chrstian Wolfensberger, Officer   11/02/2009
**Signature of Reporting Person Date
 GLENCORE INTERNATIONAL AG, by: /s/ Stuart Cutler, Officer, /s/ Steven Kalmin, Officer   11/02/2009
**Signature of Reporting Person Date
 GLENCORE HOLDING AG, by: /s/ Ivan Glasenberg, Director, /s/ Willy R. Strothotte, Director   11/02/2009
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Represents shares of common stock acquired upon conversion of 41,975.27 shares of Series A Convertible Preferred Stock on October 29, 2009. Each share of Series A Convertible Preferred Stock is convertible into 100 shares of common stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock.
(2) The shares of common stock reported in Table I and Series A Convertible Preferred Stock reported in Table II are held directly by Glencore AG, a direct wholly-owned subsidiary of Glencore International AG, and indirectly by Glencore International AG and its controlling shareholder, Glencore Holding AG.
(3) Represents the acquisition of 850,000 shares in multiple separate transactions at prices ranging from $8.40 to $8.96, resulting in a weighted average purchase price of $8.7068. At the request of the Securities and Exchange Commission (SEC), the Reporting Person will provide the SEC with full information regarding the number of shares purchased at each separate price.
(4) Each share of Series A Convertible Preferred Stock is convertible into 100 shares of the Issuer's common stock at the times and under the circumstances described in the Certificate of Designation for the Series A Convertible Preferred Stock. The Series A Convertible Preferred Stock has no expiration date.

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