November 20, 2017
WALTHAM, Mass. and VIENNA–(BUSINESS WIRE Arsanis, Inc. (NASDAQ:ASNS), a clinical-stage biopharmaceutical company focused on applying monoclonal antibody immunotherapies to address serious infectious diseases, today announced the closing of its initial public offering of 4,600,000 shares of its common stock at a public offering price of $10.00 per share, including 600,000 additional shares of common stock issued upon the exercise in full by the underwriters of their over-allotment option. The gross proceeds to Arsanis from the offering were $46.0 million, before deducting underwriting discounts and commissions and other offering expenses. All of the shares sold in the offering were offered by Arsanis. Arsanis’ shares began trading on The NASDAQ Global Market on November 16, 2017.