Company:  ARENA PHARMACEUTICALS INC (ARNA)
Form Type:  424B3
Filing Date:  4/10/2012 
CIK:  0001080709 
Address:  6154 NANCY RIDGE DRIVE 
City, State, Zip:  SAN DIEGO, California 92121 
Telephone:  858-453-7200 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$8.30  
Change: 
0.241 (2.99%)  
Trade Time: 
04:00 PM EST  
Market Cap: 
$1.81B
Description of Business
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  FORM 424B3
    TABLE OF CONTENTS
    PROSPECTUS SUMMARY
    RISK FACTORS
    FORWARD-LOOKING STATEMENTS
    USE OF PROCEEDS
    SELLING STOCKHOLDERS
      BENEFICIAL OWNERS
    PLAN OF DISTRIBUTION
    LEGAL MATTERS
    EXPERTS
    WHERE YOU CAN FIND MORE INFORMATION