CAMBRIDGE, Mass.--(BUSINESS WIRE)--Ra Pharmaceuticals, Inc. (Nasdaq: RARX)  today announced the pricing of an underwritten public offering of 4,000,000 shares of its common stock, at a public offering price of $32.50 per share. Ra Pharma also granted the underwriters a 30-day option to purchase up to an additional 600,000 shares of its common stock. The gross proceeds from the offering, before deducting underwriting discounts and commissions and estimated offering expenses, are expected to be approximately $130 million, excluding any exercise of the underwriters’ option to purchase additional shares. All of the shares in the offering are to be sold by Ra Pharma.

Jefferies, BMO Capital Markets, Stifel and Guggenheim Securities are acting as joint book-running managers for the offering. Baird is acting as lead manager for the offering. The offering is expected to close on or about July 26, 2019, subject to customary closing conditions.

About Ra Pharmaceuticals, Inc.

Ra Pharma is a clinical-stage biopharmaceutical company focused on leading the field of complement biology to bring innovative and accessible therapies to patients with rare diseases. The Company discovers and develops peptides and small molecules to target key components of the complement cascade.