Company:  PDF SOLUTIONS INC (PDFS)
Form Type:  4
Filing Date:  11/29/2011 
CIK:  0001120914 
Address:  333 WEST SAN CARLOS STREET
SUITE 700
 
City, State, Zip:  SAN JOSE, California 95110 
Telephone:  (408) 280-7900 
Fiscal Year:  12/31 
Last Trade
Last Trade: 
$17.78  
Change: 
-0.35 (-1.93%)  
Trade Time: 
May 24  
Market Cap: 
$524.85M
Description of Business
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  FORM 4
    NAME AND TITLE
    NON DERIVATIVE SECURITIES
    DERIVATIVE SECURITIES
    EXPLANATIONS AND REMARKS
    REPORTING OWNERS
    SIGNATURES