X0306 4 2014-03-25 0 0001000694 NOVAVAX INC NVAX 0001021015 DOUGLAS RICHARD C/O NOVAVAX, INC. 20 FIRSTFIELD ROAD GAITHERSBURG MD 20878 1 0 0 0 Common Stock 2014-03-25 4 P 0 50000 4.334 A 250000 D The reported price is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $4.305 to $4.39, inclusive. The reporting person undertakes to provide to Novavax, Inc., any security holder of Novavax, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each price within the range set forth in this footnote. /s/ John A. Herrmann III, Attorney-in-Fact 2014-03-25