SAN DIEGO–(BUSINESS WIRE)–Gossamer Bio, Inc., a clinical-stage biopharmaceutical company focused on discovering, acquiring, developing and commercializing therapeutics in the disease areas of immunology, inflammation and oncology, today announced that it has filed a registration statement on Form S-1 with the U.S. Securities and Exchange Commission (the “SEC”) in connection with the commencement of a proposed initial public offering of its common stock. Gossamer Bio is offering 14,375,000 shares of its common stock at an initial public offering price of $16.00 per share. Gossamer Bio has applied to list its stock for trading on the Nasdaq Global Select Market under the symbol “GOSS.” Gossamer Bio expects to grant the underwriters a 30-day option to purchase up to an additional 2,156,250 shares of common stock in connection with the offering. All of the shares are being sold by Gossamer Bio.

Gossamer Bio has included in the registration statement the proposed public offering price and the number of shares offered and specific language under Rule 473(b) promulgated under the Securities Act of 1933, as amended (the “Securities Act”), such that the registration statement is expected to become automatically effective 20 calendar days after today’s filing, or February 12, 2019, pursuant to Section 8(a) of the Securities Act. Gossamer Bio expects to complete the pricing of the offering on such date. In the event that the federal government and the SEC resume normal operations prior to February 12, 2019, Gossamer Bio will re-evaluate the use of Section 8(a) in connection with the offering.

BofA Merrill Lynch, SVB Leerink, Barclays and Evercore ISI are acting as joint book-running managers for the proposed offering.

A registration statement relating to these securities has been filed with the SEC, but has not yet become effective. These securities may not be sold, nor may offers to buy be accepted, prior to the time the registration statement becomes effective. This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any offer or 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 such state or jurisdiction.

The proposed offering will be made only by means of a prospectus. Copies of the preliminary prospectus relating to the proposed offering may be obtained, when available, from: BofA Merrill Lynch, NC1-004-03-43, 200 North College Street, 3rd Floor, Charlotte, NC 28255-0001, Attention: Prospectus Department, or by email at dg.prospectus_requests@baml.com; or from SVB Leerink, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110, or by email at syndicate@leerink.com, or by telephone at (800) 808-7525, ext. 6132; or from Barclays, c/o Broadridge Financial Solutions, Attn: Prospectus Department, 1155 Long Island Avenue, Edgewood, NY 11717, or by telephone at (888) 603-5847, or by email at Barclaysprospectus@broadridge.com; or from Evercore ISI, Attention: Equity Capital Markets, 55 East 52nd Street, 36th Floor, New York, NY 10055, or by telephone at (888) 474-0200, or by email at ecm.prospectus@evercore.com.

Contacts

Gossamer Bio:
For Investors:
Argot Partners
Kimberly Minarovich
Tel 212.600.1902
kimberly@argotpartners.com

For Media:
Argot Partners
David Rosen
Tel 212.600.1902
david.rosen@argotpartners.com