Altimmune, Inc. (Nasdaq: ALT), a clinical-stage biopharmaceutical company, today announced that it intends to offer and sell, subject to market and other conditions, shares of its common stock in an underwritten public offering and, to certain investors in lieu thereof, pre-funded warrants to purchase shares of its common stock. Altimmune also expects to grant the underwriters a 30-day option to purchase up to an additional 15% of the number of shares of common stock plus the shares of common stock underlying the pre-funded warrants sold in connection with the public offering. All of the securities in the offering will be sold by Altimmune. The offering is subject to market and other conditions, and there can be no assurance as to whether or when the offering may be completed, or as to the actual size or terms of the offering.

Altimmune anticipates using the net proceeds from the offering for general corporate purposes, which may include, but are not limited to, scale up of manufacturing and advanced clinical trials of AdCOVID, a single dose intranasal COVID vaccine candidate; the continued development of ALT-801, its dual GLP-1/glucagon receptor agonist for the treatment of non-alcoholic steatohepatitis (NASH), including manufacturing and clinical trials; and for capital expenditures and working capital.

Jefferies, Evercore ISI and Piper Sandler are acting as joint book-running managers for the offering. Roth Capital Partners is acting as co-manager for the offering.

The securities described above are being offered by Altimmune pursuant to a shelf registration statement on Form S-3, including a base prospectus, that was previously filed with and became effective by rule of the Securities and Exchange Commission (SEC) on April 12, 2019.