PDF SOLUTIONS INC — Director's Dealing 2010

May 19, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PDF SOLUTIONS INC (PDFS)
CIK: 0001120914
Period of Report: 2010-05-15

Reporting Person: JOSEPH DAVID (Chief Strategy Officer, Acting President, PDF Japan)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-15	Common Stock	F	863	$4.87	Disposed	264174	Direct

Footnotes

F1: This represents a disposition of shares to the Company to satisfy tax withholding obligations with respect to the vesting of restricted Stock rights. This is not a sale of shares in the market.