Impinj to Present at Thomas Weisel Partners' GPS & RFID - Track, Trace and Navigate Conference

May 17, 2007

SEATTLE, WA -- (MARKET WIRE) -- May 17, 2007 -- Leading UHF Gen 2 radio frequencyidentification (RFID) tag chip and reader supplier Impinj, Inc. todayannounced that the company's President and CEO, Dr. William T. Colleran,will speak at Thomas Weisel Partners' 2007 GPS & RFID Conference.

Presentation date and time: May 23, 2007, 8:30 AM

Location: Thomas Weisel New York Office, 390 Park Avenue, New York

Live Audio Webcast archived for 30 days:

About Impinj, Inc.

Impinj, Inc. is a semiconductor and RFID company whose patentedSelf-Adaptive Silicon® technology enables two synergistic business lines:high-performance RFID products and semiconductor intellectual property(IP). A leading contributor to the RFID standards for high-volumesupply-chain applications worldwide, Impinj leverages technical expertiseand industry partnerships to deliver the GrandPrix™ solution, comprisingtags, readers, software, and systems integration to offer RFID that justworks™. Impinj licenses innovative IP products, core to the company'sRFID tags, to leading semiconductor companies worldwide, allowing them toseamlessly integrate crucial nonvolatile memory (NVM) alongside analog anddigital functionality on a single chip. Impinj's IP products include thepopular AEON® family of embeddable cores, which provide rewriteable NVMtechnology in logic CMOS manufacturing. For more information,

Impinj, Speedway, Self-Adaptive Silicon, GrandPrix, Monza, Brickyard, "RFIDthat just works," and AEON are either registered trademarks or trademarksof Impinj, Inc.