X0306 4 2019-07-31 false 0001114995 IMPINJ INC PI 0001184752 ALBERG TOM A 400 FAIRVIEW AVE N. SUITE 1200 SEATTLE WA 98109 true false false false COMMON STOCK 31219 I By Raven Trust Fund COMMON STOCK 2019-07-31 4 S false 12191 36.8414 D 102319 D COMMON STOCK 2019-07-31 4 S false 20823 37.7666 D 81496 D COMMON STOCK 2019-07-31 4 S false 2700 38.9903 D 78796 D Shares held of record by Raven Trust Fund. Mr. Alberg shares voting and dispositive control over such shares but disclaims beneficial ownership over such shares. The sales reported by Mr. Alberg were effected pursuant to a Rule 10b5-1 trading plan. 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 $36.3550 to $37.33, 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 $37.38 to $38.005, 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 $38.74 to $39.25, 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. Yukio Morikubo as Attorney in fact for Tom Alberg 2019-08-01