Arrowhead Snags John Miller

Arrowhead Research Corporation, an emerging company in the field of
nanotechnology, announced today that John C. Miller, one of the leading
authorities on nanotechnology business and and legal policy in the country, has agreed to join the Company as Vice President, Intellectual Property.

In his new capacity, Mr. Miller will help guide Arrowhead Research in the
area of business development, as well as patent and intellectual property
issues.