PDF SOLUTIONS INC — Director's Dealing 2017

May 22, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PDF SOLUTIONS INC (PDFS)
CIK: 0001120914
Period of Report: 2017-05-18

Reporting Person: LANZA LUCIO (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-05-18	Common Stock	M	15000	$10.43	Acquired	335623	Direct
2017-05-18	Common Stock	S	15000	$16.6116	Disposed	320623	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-05-18	Stock Options (Right to Buy)	$10.43	M	15000	Disposed	2017-05-29	Common Stock (15000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	121720	Indirect

Footnotes

F1: Average weighted sale price for shares disposed of in the reported transaction. The shares were sold in multiple brokers' transactions at various market prices per share ranging from $16.51 to $16.70.

F2: These shares represent a grant of Stock Options (right to buy) granted on May 30, 2007 under the Company's Director Compensation Program (Total Options). 25% of the Total Options vested on May 30, 2008 and 1/48th of the Total Options vested on the 30th day of each month thereafter until fully vested.