X0306 4 2020-05-15 0 0001401708 NanoString Technologies Inc NSTG 0001274139 HERSHBERG ROBERT C/O NANOSTRING TECHNOLOGIES, INC. 530 FAIRVIEW AVENUE N SEATTLE WA 98109 1 0 0 0 Common Stock 2020-05-15 4 M 0 10168 7.47 A 10168 D Common Stock 2020-05-15 4 S 0 6453 30.61 D 3715 D Common Stock 2020-05-15 4 S 0 3715 31.20 D 0 D Common Stock 7.47 2020-05-15 4 M 0 10168 7.47 D 2027-12-31 Common Stock 10168.0 0 D The sales reported by Dr. Hershberg were effected pursuant to a Rule 10b5-1 trading plan adopted on March 15, 2020. 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 $30.05 to $31.04, 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. 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 $31.07 to $31.36, 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. 100% of the shares subject to the Option vest on the one year anniversary of January 1, 2018. 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 2020-05-18