Alnylam Pharma Announces Exercise of Underwriter's Over-Allotment Option in Offering

Alnylam Pharmaceuticals, Inc. (NASDAQ: ALNY), a leading RNAi therapeuticscompany, today announced that the underwriters of its previously announcedpublic offering of common stock have exercised their option to purchase anadditional 1,200,000 shares at the public offering price of $20.13 per share.As a result, the company will issue a total of 9,200,000 shares in theoffering and will receive aggregate net proceeds, after underwriting discountsand commissions and other estimated offering expenses, of approximately $173.8million. The offering is expected to close on or about January 22, 2013,subject to the satisfaction of customary closing conditions.