PDF SOLUTIONS INC — Director's Dealing 2013

May 30, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PDF SOLUTIONS INC (PDFS)
CIK: 0001120914
Period of Report: 2013-05-28

Reporting Person: HEINRICHS R STEPHEN (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-28	Common Stock	A	7374	—	Acquired	12999	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	11313	Indirect

Footnotes

F1: These shares represent an award of restricted stock units granted under the Company's Director Compensation Program. 25% of the Total Shares vested on May 28, 2013 and 25% of the Total Shares of the shall vest annually thereafter until fully vested, provided that the reporting person continues to serve as a Director on the Board of Directors.