Press Release Details

Arrowhead Research President & CEO Christopher Anzalone Featured in The Wall Street Transcript InterviewPASADENA, Calif. – June 16, 2011 – Arrowhead Research Corporation (NASDAQ: ARWR), a nanomedicine company with development programs in oncology, obesity, and regenerative medicine, today announced that its President and CEO Christopher Anzalone, Ph.D., was featured in a Medical Research, Diagnostic Substances & Life Science Tools Report published by The Wall Street Transcript. Topics covered by Dr. Anzalone include Arrowhead’s operational and clinical progress with its RNAi, obesity and regenerative medicine programs, the Company’s paradigm shifting technologies under development, strategic growth initiatives and key catalysts for which investors and industry experts should watch for in the near-term.

Dr. Anzalone’s interview can be accessed on the Company’s website at: www.arrowheadresearch.com.

Published on June 14, 2011, this edition of interviews by the Wall Street Transcript offers a timely review of the sector containing expert industry commentary through in-depth interviews with public company CEOs, Equity Analysts and Money Managers. The full issue may be obtained by calling (212) 952-7433 or via The Wall Street Transcript Online.

About Arrowhead Research Corporation

Arrowhead Research Corporation is a clinical stage targeted therapeutics company with development programs in oncology, obesity, and infectious disease. The company leverages its platform technologies to design and develop peptide-drug conjugates (PDCs) which specifically home to cell types of interest while sparing off-target tissues, creates targeted drugs based on the gene silencing RNA interference (RNAi) mechanism, and works with partners to create improved versions of traditional small molecule drugs.

For more information please visit http://www.arrowheadresearch.com, or follow us on Twitter @ArrowRes. To be added to the Company's email list to receive news directly, please send an email to ir@arrowres.com 

Safe Harbor Statement under the Private Securities Litigation Reform Act:

This news release contains forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. These statements are based upon our current expectations and speak only as of the date hereof. Our actual results may differ materially and adversely from those expressed in any forward-looking statements as a result of various factors and uncertainties, including our ability to finance our operations, the future success of our scientific studies, our ability to successfully develop drug candidates, the timing for starting and completing clinical trials, rapid technological change in our markets, and the enforcement of our intellectual property rights. Arrowhead Research Corporation's most recent Annual Report on Form 10-K and subsequent Quarterly Reports on Form 10-Q discuss some of the important risk factors that may affect our business, results of operations and financial condition. We assume no obligation to update or revise forward-looking statements to reflect new events or circumstances.