X0306 4 2013-07-10 0 0001401708 NanoString Technologies Inc NSTG 0001252522 GALAKATOS NICHOLAS C/O CLARUS VENTURES, LLC 101 MAIN STREET, SUITE 1210 CAMBRIDGE MA 02142 1 0 1 0 Stock Option (Right to Buy) 8.45 2013-07-10 4 A 0 8768 0.00 A 2023-07-09 Common Stock 8768 8768 D 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. In accordance with the internal policies of Clarus Ventures, the options received by Dr. Galakatos must be held for the benefit of Clarus Ventures and its affiliates. /s/ Nicholas Galakatos, Attorney-in-fact 2013-07-12