Impinj Scores Top Ten Ranking in Deloitte's Technology Fast 50 Program for Washington State

SEATTLE, WA--(Marketwire - October 1, 2008) - Leading UHF Gen 2 radio frequency identification (RFID) solutions provider Impinj, Inc. today announced finishing seventh in Deloitte's prestigious Technology Fast 50 program for Washington State, a ranking of the 50 fastest growing technology, media, telecommunications and life sciences companies based upon percentage revenue growth from 2003 through 2007.

"We're excited by Deloitte's recognition and to be included with such a prestigious group of companies," said William T. Colleran, Ph.D., president and CEO of Impinj. "Our success, as measured by 1889% revenue growth from 2003 through 2007, is a testament to the hard work and dedication of our employees who have made Impinj the most innovative company in the RFID industry."

"To rank on Deloitte's Technology Fast 50, companies must have phenomenal revenue growth over five years," said Larry Hile, managing partner in Deloitte's Technology, Media & Telecommunications (TMT) and Health & Life Sciences Seattle practices. "Impinj has proven to be one of the fast-growth success stories in Washington, and we applaud their dedication to making their vision a reality."

To qualify for the Technology Fast 50, companies must have had operating revenues of at least $50,000 in 2003 and $5,000,000 in 2007. They must also be headquartered in North America and be a company that owns proprietary technology or proprietary intellectual property that contributes to a significant portion of the company's operating revenues, or devotes a significant proportion of revenues to the research and development of technology.

About Impinj, Inc.

Impinj, Inc. is the world's leading technical innovator in developing UHF Gen 2 RFID solutions for both item-level and supply-chain tagging. Impinj draws on its technical expertise and industry partnerships to deliver a wide range of products and solutions comprising high-performance tag chips, readers, reader chips, software, antennas, and systems integration. Impinj products provide unprecedented performance, integration and cost effectiveness to a global customer base across numerous vertical markets with applications including inventory management, asset tracking, authentication and serialization. For more information, visit www.impinj.com.

Impinj, Speedway, Indy and Monza are either registered trademarks or trademarks of Impinj, Inc.

About Deloitte

As used in this document, "Deloitte" means Deloitte LLP and Deloitte Services LP, a subsidiary of Deloitte LLP. Please see www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

Contact Information: Editorial Contacts: Jim Donaldson Impinj, Inc. 206-834-1091 Lauren Kriegler Impinj, Inc. 206-812-9727