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ALNYLAM PHARMACEUTICALS INC

For the period ended Dec 31, 2023. Filed Feb 15, 2024.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2023 · Filed Feb 15, 2024

ALNY$156.61+0.4%Stored close · as of Nov 9, 2026

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Contents

ITEM 2. PROPERTIES

Our operations are based primarily in Cambridge, Massachusetts; Zug, Switzerland; Maidenhead, United Kingdom; Amsterdam, Netherlands; and Tokyo, Japan. A description of certain of the facilities we lease or own as of January 31, 2024 is included in the table below.

LocationPrimary UseApproximateSquare FootageLeaseExpiration DateRenewal Option
675 West Kendall Street Henri A. Termeer Square Cambridge, MassachusettsCorporate headquarters and primary research facility295,000January 2034Two five-year terms
300 Third StreetCambridge, MassachusettsOffice space and additional research facility129,000January 2034Two five-year terms
101 Main StreetCambridge, MassachusettsOffice space*61,000March 2024 and June 2026One five-year term on each lease
20 Commerce WayNorton, MassachusettsGMP manufacturing200,000Not applicableNot applicable
665 Concord AvenueCambridge, MassachusettsGMP manufacturing**15,000September 2027One five-year term
Grafenauweg 46300 Zug, SwitzerlandInternational headquarters14,500March 2028One five-year term
Braywick GateBraywick Road, MaidenheadBerkshire, United KingdomOffice space21,500May 2026None
Wisdom Cross Tower Antonio Vivaldistraat 150Amsterdam, NetherlandsOffice space12,500April 2025One five-year term
Pacific Century Place1-Chome-11-1 Marunouchi Chiyoda-ku Tokyo, JapanOffice space16,900May 2025None
  • We lease office space located on the 12th and 13th floors at 101 Main Street, Cambridge, Massachusetts under a non-cancelable real property lease agreement by and between the Company and RREEF America REIT II CORP. PPP, dated as of April 15, 2015, or the Lease. On September 30, 2020, we entered into a First Amendment to the Lease, pursuant to which the term of the Lease with respect to the 12th and 13th floors was extended for an additional five years, through June 30, 2026. In addition, we have a separate lease agreement for the 10th floor at 101 Main Street, which expires in March 2024 and will not be extended.

** We manufacture ONPATTRO (patisiran) formulated bulk drug product at this location.

In addition to the locations above, we also occupy small offices in multiple locations in and outside of the U.S. to support our operations and growth.

In the future, we may lease, operate, purchase or construct additional facilities in which to conduct expanded research, development and manufacturing activities and support future commercial operations. We believe that the total space available to us under our current leases will meet our needs for the foreseeable future and that additional space would be available to us on commercially reasonable terms if required.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.