X0306 4 2014-01-01 0 0001401708 NanoString Technologies Inc NSTG 0001575789 KURUVILLA FINNY C/O CLARUS VENTURES LLC 101 MAIN STREET, SUITE 1210 CAMBRIDGE MA 02142 1 0 1 0 Stock Option (Right to Buy) 17.24 2014-01-01 4 A 0 5847 0.00 A 2023-12-31 Common Stock 5847 5847 D 100% of the shares subject to the Option vest on the one year anniversary of January 1, 2014. 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. In accordance with the internal policies of Clarus Ventures, the options received by Dr. Kuruvilla must be held for the benefit of Clarus Ventures and its affiliates. /s/ Barbara A. Mery, Attorney-in-fact 2014-01-03