X0306 4 2018-12-13 0 0001000694 NOVAVAX INC NVAX 0001342823 Glenn Gregory M C/O NOVAVAX, INC. 20 FIRSTFIELD ROAD GAITHERSBURG MD 20878 0 1 0 0 President, R&D Stock Option (Right to Buy) 2.30 2018-12-13 4 A 0 635000 0.00 A 2028-12-13 Common Stock 635000 635000 D Twenty-five percent (25%) of the shares subject to this option grant under the Novavax, Inc. Amended and Restated 2015 Stock Incentive Plan, as amended, will vest on the first anniversary of the December 13, 2018 grant date, and the remaining seventy-five percent (75%) of the shares will vest in equal monthly installments over the following three (3) years subject to continued employment through such vesting date. /s/ John A. Herrmann III, Attorney-in-Fact 2018-12-14