EXHIBIT 4
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 13D need be filed with respect to the ownership by each of
the undersigned of shares of stock of Aradigm Corporation
EXECUTED this 20 day of February, 2003.
MPM BIOEQUITIES ADVISER LLC MPM BIOEQUITIES GP LLC
By: /s/ Xxxx X. Xxxxx By: /s/ Xxxx X. Xxxxx
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Name: Xxxx X. Xxxxx Name: Xxxx X. Xxxxx
Title: Manager Title: Manager
MPM BIOEQUITIES MASTER FUND L.P. MPM BIOEQUITIES GP L.P.
By: MPM BIOEQUITIES GP L.P., By: MPM BIOEQUITIES GP LLC
its General Partner its General Partner
By: /s/ Xxxx X. Xxxxx By: /s/ Xxxx X. Xxxxx
------------------------------- ------------------------------
Name: Xxxx X. Xxxxx Name: Xxxx X. Xxxxx
Title: Manager Title: Manager
/s/ Xxxx xxx Xxxxxx
----------------------------------
Xxxx xxx Xxxxxx
/s/ Xxxxxx X. Xxxxxx
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Xxxxxx X. Xxxxxx
/s/ Xxxx X. Xxxxx
----------------------------------
Xxxx X. Xxxxx
/s/ Xxxxxxx Xxxxxxx
----------------------------------
Xxxxxxx Xxxxxxx
