BioCryst Pharmaceuticals Commences Public Offering of Common Stock

RESEARCH TRIANGLE PARK, N.C., Sept. 11, 2017 -- BioCryst Pharmaceuticals, Inc. (Nasdaq:BCRX) a biotechnology company focused on the development and commercialization of treatments for rare and infectious diseases, announced today that it is offering to sell $80 million of its common stock in an underwritten public offering. As part of this offering, BioCryst intends to grant the underwriters a 30-day option to purchase up to an additional $12 million of its common stock. The offering is subject to market conditions, and there can be no assurance as to whether or when the offering may be completed, or the actual size or terms of the offering.

J.P. Morgan Securities LLC and Barclays Capital Inc. are acting as joint book-running managers for the proposed offering.

All of the shares to be sold in the offering are being sold by BioCryst, with the proceeds to be used for general corporate purposes, which may include funding the global launch preparation of BCX7353; expanding our global awareness and commercial and manufacturing efforts; expanding our infrastructure, including commercial and manufacturing, to benefit BCX7353 and the rest of our programs; supporting the initiation of the Phase 3 clinical trial for BCX7353, the long term safety study, and all remaining preclinical and clinical studies to support a new drug application filing for BCX7353; funding an exploratory Phase 2 trial for acute treatment with BCX7353; and advancing our early-stage programs into clinical trials.

A shelf registration statement on Form S-3 relating to the shares of common stock described above has been previously filed with and declared effective by the U.S. Securities and Exchange Commission (SEC). This press release does not constitute an offer to sell, or the solicitation of an offer to buy, these securities, nor will there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation or sale is not permitted.

This offering is being made by means of a prospectus supplement and related prospectus. A preliminary prospectus supplement relating to the offering will be filed with the SEC and will be available on its website at www.sec.gov. Copies of the preliminary prospectus supplement and accompanying prospectus may be obtained from J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by telephone: 1-866-803-9204 or from Barclays Capital Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, NY 11717 or by email: [email protected] or by telephone: 1-888-603-5847.

About BioCryst Pharmaceuticals

BioCryst Pharmaceuticals designs, optimizes and develops novel small molecule drugs that block key enzymes involved in rare diseases.  BioCryst has several ongoing development programs: BCX7353 and second generation oral inhibitors of plasma kallikrein for hereditary angioedema, and galidesivir, a broad spectrum viral RNA polymerase inhibitor that is a potential treatment for filoviruses.  RAPIVAB® (peramivir injection), a viral neuraminidase inhibitor for the treatment of influenza, is BioCryst's first approved product and has received regulatory approval in the U.S., Canada, Japan, Taiwan and Korea. Post-marketing commitment development activities for RAPIVAB are ongoing, as well as activities to support regulatory approvals in other territories.

Forward-Looking Statements

This press release contains forward-looking statements, including statements regarding future results and achievements, use of proceeds and the completion of this offering. These statements involve known and unknown risks, uncertainties and other factors which may cause our actual results, performance, achievements, or outcomes to be materially different from any future results, performances, achievements, or outcomes expressed or implied by the forward-looking statements, including risks and uncertainties associated with market conditions and the satisfaction of customary closing conditions related to this offering and other risks and uncertainties inherent in BioCryst's business. Please refer to the documents that BioCryst files periodically with the SEC, specifically BioCryst’s most recent Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K, which identify important factors that could cause the actual results to differ materially from those contained in BioCryst's projections and forward-looking statements.

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CONTACT:
Thomas Staab, BioCryst Pharmaceuticals, +1-919-859-7910