- Date of transaction 23 October 2008


See attachment.

FORM 4 

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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Subject to section 16 

1. Name and Address of Reporting Person
  OBRIEN JOHN P CENTURY ALUMINUM COMPANY 2511 GARDEN ROAD, BLDG A, SUITE 200
  MONTEREY, CA 93940 

2. Issuer Name and Ticker or Trading Symbol: CENTURY ALUMINUM CO [CENX]

3. Date of Earliest Transaction (Month/Day/Year): 10/23/2008

4. If Amendment, Date Original Filed (Month/Day/Year): 

5. Relationship of Reporting Person(s) to Issuer
    
                  __X__ Director
   
                  _____ 10% Owner
      
                  _____ Officer (give title below)
      
                  _____ Other (specify below)
       / 

6. Individual or Joint/Group Reporting
    
                  _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: Common Stock  
  2.  Transaction Date (Month/Day/Year): 10/23/2008
  2A. Deemed Execution Date, if any (Month/Day/Year):    
  3.  Transaction Code: P
  4.  Securities Acquired (A) or Disposed of (D): A
      Securities Acquired or Disposed of (Amount): 10,000
      Securities Acquired or Disposed of (Price): 11.85
  5.  Amount of Securities Beneficially Owned Following Reported
      Transaction(s): 16,047(1) 
  6. Ownership Form: Direct (D) or Indirect (I): D  
  7. Nature of Indirect Beneficial Ownership: 


Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

Attachments

centuryaluminum_4_20081023.pdf