X0303 4 2010-05-18 0 0001120914 PDF SOLUTIONS INC PDFS 0001342570 Caulfield Thomas 333 WEST SAN CARLOS ST SUITE 700 SAN JOSE CA 95110 1 0 0 0 2001 Stock Plan Option (right to buy) 4.82 2010-05-18 4 A 0 22500 0 A 2011-05-18 2020-05-18 Common Stock 22500 22500 D 1/4th of the total number of shares will vest on May 18, 2011 and the reminder will vest in 36 equal monthly installments thereafter on the 18th of each month, provided that the reporting person continues to serve as a director on the Board of Directors. /s/ Joy E. Leo, Attorney-in-Fact for Thomas Caulfield 2010-05-20