PDF SOLUTIONS INC — Director's Dealing 2011

Jun 2, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PDF SOLUTIONS INC (PDFS)
CIK: 0001120914
Period of Report: 2011-05-27

Reporting Person: Caulfield Thomas (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-27	Restricted Stock Unit	A	3750	—	Acquired	21965	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-27	2001 Stock Plan Option (right to buy)	$6.21	A	11250	Acquired	2021-05-27	Common Stock (11250)	Direct

Footnotes

F1: 1/48th of the total number of shares will vest on June 27, 2011 and 1/48th of the total shares will vest on the 27th of each month, provided that the reporting person continues to serve as a director on the Board of Directors.