X0306 4 2019-08-13 false 0001114995 IMPINJ INC PI 0001057881 VAN OPPEN PETER H 400 FAIRVIEW AVE N. SUITE 1200 SEATTLE WA 98109 true false false false COMMON STOCK 2019-08-13 4 M false 5942 0 A 58470 D COMMON STOCK 2019-08-13 4 S false 4098 35.8859 D 54372 D COMMON STOCK 2019-08-13 4 S false 4372 36.8274 D 50000 D RESTRICTED STOCK UNITS - 2018 2019-08-13 4 M false 5942 0 D COMMON STOCK 5942 0 D Restricted stock units convert to common stock on a one to one basis. The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $35.55 to $36.45, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. The "Amount" and "Price" reported in this Column 4 reflect the aggregate number and weighted-average price, respectively, of shares sold. These shares were sold in multiple transactions at prices ranging from $36.68 to $37.00, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein. Each restricted stock unit represents a contingent right to receive one share of Impinj common stock. On August 13, 2018, the reporting person was granted 5,942 restricted stock units (RSUs). These RSUs fully vested on August 13, 2019. Yukio Morikubo as Attorney in fact for Peter Van Oppen 2019-08-15