Ultragenyx Announces Proposed Public Offering of Common Stock

NOVATO, Calif., Jan. 22, 2018 -- Ultragenyx Pharmaceutical Inc. (NASDAQ:RARE), a biopharmaceutical company focused on the development of novel products for rare and ultra-rare diseases, today announced that it has commenced an underwritten public offering of up to $175,000,000 of shares of its common stock. In addition, the company is expected to grant the underwriters of the offering an option for a period of 30 days to purchase up to an additional $26,250,000 of shares of common stock at the public offering price, less the underwriting discount. 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.

J.P. Morgan Securities LLC, BofA Merrill Lynch, Goldman Sachs & Co. LLC and Cowen are acting as joint book-running managers for the offering.

A registration statement relating to these securities has been filed with the Securities and Exchange Commission and became automatically effective on February 3, 2015. This offering is being made solely by means of prospectus supplement and accompanying prospectus. When available, copies of the preliminary prospectus supplement and the accompanying prospectus related to the offering may be obtained from J.P. Morgan Securities LLC, c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, by telephone at 866-803-9204, or by email at [email protected]; BofA Merrill Lynch, NC1-004-03-43, 200 North College Street, 3rd floor, Charlotte, NC 28255-0001, Attention: Prospectus Department, or by email at [email protected]; Goldman Sachs & Co. LLC, Prospectus Department, 200 West Street, New York, NY 10282, telephone: 1-866-471-2526, facsimile: 212-902-9316 or by emailing [email protected] ; and Cowen, c/o Broadridge Financial Services, 1155 Long Island Avenue, Edgewood, NY, 11717, United States, Attn.: Prospectus Department or by telephone 1-631-274-2806.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Ultragenyx

Ultragenyx is a biopharmaceutical company committed to bringing to market novel products for the treatment of rare and ultra-rare diseases, with a focus on serious, debilitating genetic diseases. The Company has rapidly built and advanced a diverse portfolio of product candidates with the potential to address diseases for which the unmet medical need is high, the biology for treatment is clear, and for which there are no approved therapies.

The Company is led by a management team experienced in the development and commercialization of rare disease therapeutics. Ultragenyx's strategy is predicated upon time and cost-efficient drug development, with the goal of delivering safe and effective therapies to patients with the utmost urgency.

Forward-Looking Statements

Except for the historical information contained herein, the matters set forth in this press release, including statements regarding the anticipated public offering, are forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements involve substantial risks and uncertainties that could cause our clinical development programs, future results, performance or achievements to differ significantly from those expressed or implied by the forward-looking statements. Such risks and uncertainties include, among others, the uncertainties related to market conditions and the completion of the public offering on the anticipated terms or at all, the uncertainties inherent in the clinical drug development process, such as the regulatory approval process, the timing of regulatory filings, and other matters that could affect sufficiency of existing cash, cash equivalents and short-term investments to fund operations and the availability or commercial potential of our drug candidates. Ultragenyx undertakes no obligation to update or revise any forward-looking statements. For a further description of the risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking statements, as well as risks relating to the business of Ultragenyx in general, see Ultragenyx's Registration Statement on Form S-3 filed with the Securities and Exchange Commission on February 3, 2015, as may be amended from time to time, together with its preliminary prospectus supplement and accompanying prospectus to be filed with the Securities and Exchange Commission on January 23, 2018, and the documents incorporated by reference therein, including its Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on November 3, 2017, and its subsequent periodic reports filed with the Securities and Exchange Commission.

Contact Ultragenyx Pharmaceutical Inc.
Investors & Media
Danielle Keatley
415-475-6876