Our corporate headquarters and research laboratories are located in Cambridge, MA, with our large-scale manufacturing facilities located in Cambridge, MA, and Norton, MA. The European business offices are located in Maidenhead, UK, and Zug, Switzerland, with satellite offices in Munich, Germany; Amsterdam, Netherlands; Vienna, Austria; Paris, France; Milan, Italy; Madrid, Spain; and Stockholm, Sweden. Other global offices include Toyko, Japan; Sao Paulo, Brazil; and Mississauga, Ontario, Canada.

Alnylam has over 2,100 full-time employees worldwide as of 2025.

Our common stock is listed on the NASDAQ Stock Market under the symbol ALNY.

You can purchase stock in our company through a registered brokerage or stock purchase service provider of your choice.

Unfortunately, you cannot purchase stock directly from Alnylam.

You will need to contact the broker from whom you purchased your shares.

Transfer Agent  Computershare Investor Services  P.O. Box 43023  Providence, RI 02940-3023  Phone: 877-282-1169  Corporate Website: http://www.computershare.com

Alnylam has never paid a cash dividend, nor has plans to pay a cash dividend in the foreseeable future.

Alnylam reports quarterly financial results roughly 4 to 6 weeks after the final day of each quarter.

All webcasts can be accessed on the Events page found within the Investors section of our website.