Company:  ONYX PHARMACEUTICALS INC (ONXX)
Form Type:  8-K
Filing Date:  5/18/2009 
CIK:  0001012140 
Address:  2100 POWELL STREET 
City, State, Zip:  EMERYVILLE, California 94608 
Telephone:  (510) 597-6500 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$28.81  
Change: 
-0.24 (-0.83%)  
Trade Time: 
10:30 AM EST  
Market Cap: 
$1.79B
Description of Business
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  FORM 8-K
    SECTION 8 OTHER EVENTS
      ITEM 8.01 OTHER EVENTS
    SECTION 9 FINANCIAL STATEMENTS AND EXHIBITS
      Item 9.01. Financial Statements and Exhibits.
    SIGNATURE
    INDEX TO EXHIBITS
  EXHIBIT 99.1
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