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CUSIP NO. 00000X000 13G PAGE 15 OF 18 PAGES
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Exhibit 1
AGREEMENT
Pursuant to Rule 13d-1-(k)(1) under the Securities Exchange Act of 1934,
the undersigned hereby agree that only one statement containing the information
required by Schedule 13G need be filed with respect to the ownership by each of
the undersigned of shares of stock of Alnylam Pharmaceuticals, Inc.
This Agreement may be executed in any number of counterparts, each of
which shall be deemed an original.
Dated: February 11, 2005 ARCH VENTURE FUND V, L.P.
By: ARCH Venture Partners V, L.P.
its General Partner
By: ARCH Venture Partners V, LLC
its General Partner
By: *
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Xxxxxx Xxxxxxx
Managing Director
ARCH V ENTREPRENEURS FUND, L.P.
By: ARCH Venture Partners V, L.P.
its General Partner
By: ARCH Venture Partners V, LLC
its General Partner
By: *
-----------------------
Xxxxxx Xxxxxxx
Managing Director
ARCH VENTURE PARTNERS V, L.P.
By: ARCH Venture Partners V, LLC
its General Partner
By: *
------------------------
Xxxxxx Xxxxxxx
Managing Director
ARCH VENTURE PARTNERS V, LLC
By: *
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Xxxxxx Xxxxxxx
Managing Director
Page 15 of 18 Pages
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CUSIP NO. 00000X000 13G PAGE 16 OF 18 PAGES
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Managing Director
*
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Xxxxxx Xxxxxxx
*
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Xxxxx Xxxxxxxx
*
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Xxxxxx Xxxxxx
*
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Xxxxxxx Xxxxx
* By: /S/ Xxxx XxXxxxxxx
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Xxxx XxXxxxxxx as
Attorney-in-Fact
This Agreement was executed by Xxxx XxXxxxxxx pursuant to Powers of Attorney
attached hereto as Exhibit 2 and incorporated herein by reference.
Page 16 of 18 Pages