X0306 4 2020-11-09 0 0001401708 NanoString Technologies Inc NSTG 0001326794 Malloy Kirk 530 FAIRVIEW AVENUE N SEATTLE WA 98109 1 0 0 0 Common Stock 2020-11-09 4 M 0 1000 7.47 A 1990 D Common Stock 2020-11-09 4 M 0 1500 16.36 A 3490 D Common Stock 2020-11-09 4 S 0 2500 40.96 D 990 D Stock Options (right to buy) 7.47 2020-11-09 4 M 0 1000 7.47 D 2027-12-31 Common Stock 1000.0 2168 D Stock Option (right to buy) 16.36 2020-11-09 4 M 0 1500 16.36 D 2026-09-11 Common Stock 1500.0 8435 D The sales reported by Dr. Malloy were effected pursuant to a Rule 10b5-1 trading plan adopted on May 12, 2020. Not applicable 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. 50% of the shares subject to the Option vest on the one year anniversary of September 12, 2016 (the "Vesting Commencement Date") and thereafter the remaining 50% of the total shares vest in twelve equal monthly installments on each monthly anniversary of the Vesting Commencement Date, subject to continued service as a director through each vesting date. /s/ Shannon Atchison, Attorney-in-fact 2020-11-10