Novavax Prices $300M of Convertible Senior Notes Due 2023

Novavax, Inc.

today announced the pricing of $300 million aggregate principal amount of convertible senior unsecured notes that will mature on February 1, 2023 (the Notes). The Notes are being offered and sold only to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended. Novavax has also granted the initial purchasers of the Notes an option to purchase up to an additional $30 million aggregate principal amount of the Notes, solely to cover over-allotments. The offering was upsized from the previously announced size of $200 million. Citigroup and J.P. Morgan are acting as joint book-running managers of the offering. Piper Jaffray and Guggenheim Securities are acting as Co-Lead Managers. The Notes will bear cash interest at a rate of 3.75%, payable on February 1 and August 1 of each year, beginning on August 1, 2016. The Notes will not be redeemable prior to maturity and will be convertible into shares of Novavax common stock. The initial conversion rate for the Notes is 146.8213