X0306 4 2020-05-12 0 0001401708 NanoString Technologies Inc NSTG 0001134570 WAITE CHARLES P JR 530 FAIRVIEW AVENUE N SEATTLE WA 98109 1 0 0 0 Common Stock 2020-05-12 4 M 0 6094 8.45 A 6094 D Common Stock 2020-05-12 4 S 0 6094 32.27 D 0 D Stock Option (right to buy) 8.45 2020-05-12 4 M 0 6094 8.45 D 2023-07-09 Common Stock 6094.0 2674 D 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 $32.15 to $32.45, 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 range set forth herein. 50% of the total shares subject to the Option shall vest on the one year anniversary of June 25, 2013, and the remaining 50% of the total shares shall vest in twelve equal monthly installments thereafter. The vesting of shares subject to the Option will accelerate in full upon a "change in control" as defined in the 2013 Equity Incentive Plan. /s/ Shannon Atchison, Attorney-in-fact 2020-05-14