Impinj, Inc. announced the closing of its follow-on public offering of 4,043,249 shares of common stock at a price to the public of $27.00 per share, which included the full exercise of the underwriters’ option to purchase 527,380 additional shares from Impinj. The number of shares sold in the offering included 1,527,380 shares sold by Impinj and 2,515,869 shares sold by certain selling stockholders.   The company estimates net proceeds from the offering to be approximately $38.7 million, afte...