JOINT FILING AGREEMENT
EXHIBIT
99.1
In
accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of
1934, as amended, the persons names below agree to the joint filing on behalf of
each of them a Statement on Schedule 13D (including amendments thereto) with
regard to the common stock of Halozyme Therapeutics, Inc., and further agree
that this Joint Filing Agreement be included as an exhibit to such joint
filings. In evidence thereof, the undersigned, being duly authorized,
hereby execute this agreement as of the 1st day of July, 2008.
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Date: July
1, 2008
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/s/Xxxxxx X. Xxxx
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Xxxxxx
X. Xxxx
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Date: July
1, 2008
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NEW
RIVER MANAGEMENT V, LP
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By:
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Third
Security Capital Partners V, LLC, its general partner
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By:
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Third
Security, LLC, its manager
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By:
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/s/Xxxxxx X. Xxxx
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Xxxxxx
X. Xxxx
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Manager
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