PDF Solutions(R) Announces Second Fiscal Quarter 2011 Financial Results Release Date

SAN JOSE, Calif., July 26, 2011 (GLOBE NEWSWIRE) — PDF Solutions, Inc. (Nasdaq:PDFS), the leading provider of process-design integration technologies to enhance IC manufacturability, announced the date and time that it will release financial results for its second fiscal quarter ended June 30, 2011. John Kibarian, CEO, and Michael Shahbazian, Interim CFO, will host a live teleconference on Wednesday, August 3, 2011, beginning at 3:00 p.m. Pacific Time / 6:00 p.m. Eastern Time to discuss the results. The teleconference will be webcast simultaneously on the company’s website at http://ping.fm/HdIDJ.

An archive of the call will remain available until Wednesday, August 31, 2011, at 11:59�p.m. Pacific Time.�To hear the replay when calling from within the United States or Canada, call 1-800-642-1687. �When calling from outside of the United States or Canada, call +1-706-645-9291.�The access code for both replay options is 58540282.�An archive of the webcast will remain available on the company’s website.

About PDF Solutions

PDF Solutions, Inc. (Nasdaq:PDFS) is the leading provider of yield improvement technologies and services for the IC manufacturing process life cycle.�PDF Solutions offers solutions that are designed to enable clients to lower costs of IC design and manufacture, enhance time to market, and improve profitability by addressing design and manufacturing interactions from product design to initial process ramps to mature manufacturing operations.�PDF Solutions’ Characterization Vehicle® (CV®) test chips provide the core modeling capabilities, and are used by more leading manufacturers than any other test chips in the industry. PDF Solutions’ industry leading yield management systemsoftware, dataPOWER®, and fault detection and classification software, m�stria®, enhance yield improvement and production control activities at leading fabs around the world. Headquartered in San Jose, Calif., PDF Solutions operates worldwide with additional offices in China, Europe, Japan, Korea, Singapore and Taiwan. For the company’s latest news and information, visit http://www.pdf.com/.

The PDF Solutions, Inc. logo is available at http://ping.fm/Pjisn

Characterization Vehicle, CV, dataPOWER, m�stria, PDF Solutions, and the PDF Solutions logo are registered trademarks of PDF Solutions, Inc. or its affiliates.

CONTACT: Michael Shahbazian
         Interim Chief Financial Officer
         Tel: (408) 938-6467
         Email: michael.shahbazian@pdf.com

         Sonia Segovia
         Investor Relations Coordinator
         Tel: (408) 938-6491
         Email: sonia.segovia@pdf.com

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