JOINT FILING AGREEMENT
Exhibit
2
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 Onyx 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 29th
day of
February, 2008.
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By:
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X.
X. Xxxx & Co., L.P., as
managing
member
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By: | /s/ Xxxxxxxx Xxxxx | ||
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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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