X0206 3 2016-07-20 0 0001114995 IMPINJ INC PI 0001219043 BYBEE CLINTON 8755 WEST HIGGINS SUITE 1025 CHICAGO IL 60631 true false true false SERIES 1 PREFERRED STOCK 0 COMMON STOCK 820935 I See footnote SERIES 2 PREFERRED STOCK 0 COMMON STOCK 421684 I See footnote SERIES 2 WARRANT (RTB) 9.32 2017-06-30 COMMON STOCK 32022 I See footnote Reflects a 1-for-12 reverse stock split of the Issuer's outstanding shares effected July 8, 2016. The Series 1 Preferred Stock will automatically convert to shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering on a 1-for-1 basis. Each share has no expiration date. 815,666 of these shares are held of record by ARCH Venture Fund V, L.P.; and 5,269 of these shares are held of record by ARCH V Entrepreneurs Fund, L.P. ARCH Venture Partners V, L.P., as the sole general partner of ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., but disclaims beneficial ownership of such shares, in which it does not have an actual pecuniary interest. ARCH Venture Partners V, LLC, as the sole general partner of ARCH Venture Partners V, L.P., may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. but disclaims beneficial ownership of such shares, in which it does not have an actual pecuniary interest. Clinton Bybee, a member of the board of directors, is a managing director of ARCH Venture Partners V, LLC, and may be deemed to beneficially own certain of the shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P. Mr. Bybee disclaims beneficial ownership of all shares held of record by ARCH Venture Fund V, L.P. and ARCH V Entrepreneurs Fund, L.P., of which he does not have an actual pecuniary interest. By virtue of their relationship as affiliated entities who have overlapping general partners and managing directors, ARCH Venture Fund V, L.P., ARCH V Entrepreneurs Fund, L.P., ARCH Venture Partners V, L.P., ARCH Venture Partners V, LLC and Mr. Bybee may be deemed to share the voting and investment control of the record shares. The Series 2 Preferred Stock will automatically convert to shares of the Issuer's Common Stock upon the closing of the Issuer's initial public offering on a 1.24996780424983-for-1 basis. 418,862 of these shares are held of record by ARCH Venture Fund V, L.P.; and 2,822 of these shares are held of record by ARCH V Entrepreneurs Fund, L.P. 31,808 of these shares are held of record by ARCH Venture Fund V, L.P.; and 214 of these shares are held of record by ARCH V Entrepreneurs Fund, L.P. Power of Attorney Mark McDonnell, as Attorney-in-Fact for Clinton Bybee 2016-07-20