X0306 4 2023-03-07 0 0001000694 NOVAVAX INC NVAX 0001468534 Trizzino John C/O NOVAVAX, INC. 21 FIRSTFIELD ROAD GAITHERSBURG MD 20878 0 1 0 0 EVP, CCO and CBO Stock Option (Right to Buy) 6.97 2023-03-07 4 A 0 100100 0.00 A 2024-03-07 2033-03-07 Common Stock 100100 100100 D Restricted Stock Units 2023-03-07 4 A 0 86670 0.00 A Common Stock 86670 86670 D Twenty-five percent (25%) of the shares subject to this option grant under the Novavax, Inc. (the "Company") Amended and Restated 2015 Stock Incentive Plan, as amended (the "Plan"), will vest on the first anniversary of the March 7, 2023 grant date (the "Grant Date"), and the remaining seventy-five percent (75%) of the shares will vest in equal monthly installments over the following three (3) years, in each case subject to continued employment through such vesting date. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Company's common stock. One-third (1/3) of the RSUs subject to this grant under the Plan will vest on each of the first three (3) anniversaries of the Grant Date, in each case subject to continued employment through such vesting date. /s/ John A. Herrmann III, Attorney-in-Fact 2023-03-09