JOINT FILING AGREEMENT
Exhibit
3
In
accordance with Rule 13d-1(k)(1) under the Securities Exchange Act
of 1934, as
amended, each of the undersigned Reporting Persons hereby agrees to
the joint
filing, along with all other such Reporting Persons, on behalf of each
of them
of a statement on Schedule 13G (including amendments thereto) with
respect to
the Common Stock, $0.001 par value, of Rigel Pharmaceuticals, Inc., and that this Agreement
be
included as an Exhibit to such joint filing. This Agreement may be
executed in
any number of counterparts, all of which taken together shall constitute
one and
the same instrument.
IN
WITNESS WHEREOF, each of the undersigned hereby executes this Agreement
as of
this 11th day of January, 2008.
By: | X. X. Xxxx & Co., L.L.C., as | ||
managing member | |||
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By:
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/s/ Xxxxxxxx Xxxxx | ||
Xxxxxxxx
Xxxxx
Chief
Compliance
Officer
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D.
E. Shaw Valence Portfolios, L.L.C.
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By: | X. X. Xxxx & Co., L.P., as | ||
managing member | |||
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By:
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/s/ Xxxxxxxx Xxxxx | ||
Xxxxxxxx
Xxxxx
Chief
Compliance
Officer
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X. X. Xxxx & Co., L.L.C. | ||
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By: | /s/ Xxxxxxxx Xxxxx | |
Xxxxxxxx
Xxxxx
Chief
Compliance
Officer
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X. X. Xxxx & Co., L.P. | ||
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By: | /s/ Xxxxxxxx Xxxxx | |
Xxxxxxxx
Xxxxx
Chief
Compliance
Officer
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Xxxxx X. Xxxx | ||
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By: | /s/ Xxxxxxxx Xxxxx | |
Xxxxxxxx
Xxxxx
Attorney-in-Fact
for Xxxxx X.
Xxxx
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