Alnylam to Webcast Presentations at Several Upcoming May Investor Conferences

• Deutsche Bank 43^rd Annual Healthcare Conference on Tuesday, May 8, 2018 at 8:00 am ET at the InterContinental Hotel in Boston
• Bank of America Merrill Lynch 2018 Healthcare Conference on Wednesday, May 16, 2018 at 5:00 pm PT (8:00 pm ET) at the Encore at Wynn Las Vegas in Las Vegas, Nevada

A live audio webcast of each presentation will be available on the Investors section of the Company’s website, www.alnylam.com. A replay will be available on the Alnylam website within 48 hours after each event.

About Alnylam Pharmaceuticals
Alnylam (Nasdaq: ALNY) is leading the translation of RNA interference (RNAi) into a whole new class of innovative medicines with the potential to transform the lives of people afflicted with rare genetic, cardio-metabolic, and hepatic infectious diseases. Based on Nobel Prize-winning science, RNAi therapeutics represent a powerful, clinically validated approach for the treatment of a wide range of severe and debilitating diseases. Founded in 2002, Alnylam is delivering on a bold vision to turn scientific possibility into reality, with a robust discovery platform and deep pipeline of investigational medicines, including four product candidates that are in late-stage development. Looking forward, Alnylam will continue to execute on its “Alnylam 2020" strategy of building a multi-product, commercial-stage biopharmaceutical company with a sustainable pipeline of RNAi-based medicines to address the needs of patients who have limited or inadequate treatment options. Alnylam employs over 800 people in the U.S. and Europe and is headquartered in Cambridge, MA. For more information about our people, science and pipeline, please visit www.alnylam.com and engage with us on Twitter at @Alnylam or on LinkedIn.

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