Exhibit 1
JOINT FILING AGREEMENT
This will confirm the agreement by and among the undersigned that the Schedule
13G/A filed with the Securities and Exchange Commission on or about the date
hereof with respect to the beneficial ownership by the undersigned of the
Common Stock of Ligand Pharmaceuticals Incorporated is being filed, and all
amendments thereto will be filed, on behalf of each of the persons and
entities named below in accordance with Rule 13d-1(k) under the Securities
Exchange Act of 1934, as amended. This Agreement may be executed in two or
more counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.
This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
Dated: February 14, 2005
Highbridge International LLC
By: /s/ Xxxxxx Xxxxxxxxxx
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Xxxxxx Xxxxxxxxxx, Director
Highbridge Capital Corporation
By: /s/ Xxxxxx Xxxxxxxxxx
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Xxxxxx Xxxxxxxxxx, Controller
Highbridge Capital Management, LLC
By: /s/ Xxxxxx X. Xxxxxxx
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Xxxxxx X. Xxxxxxx, Managing Partner
/s/ Xxxxx Xxxxx
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Xxxxx Xxxxx
/s/ Xxxxx Xxxxxx
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Xxxxx Xxxxxx
