Arrowhead to Report Fiscal 2013 Second Quarter Financial Results

  Arrowhead to Report Fiscal 2013 Second Quarter Financial Results

           - Conference Call Scheduled for Thursday, May 9, 2013 -

Business Wire

PASADENA, Calif. -- May 02, 2013

Arrowhead Research Corporation (NASDAQ:ARWR), a targeted therapeutics company,
today announced that it will report its financial results for the fiscal 2013
second quarter ended March 31, 2013, on Thursday, May 9, 2013, at 4:30 p.m.
Eastern time (1:30 p.m. Pacific time). To participate in the conference call,
please dial 877-317-6789 (toll free from the US), 866-605-3852 (toll free from
Canada), or 412-317-6789 (for international callers). Investors may also
access a live audio webcast of this conference call on the Company's website
at www.arrowheadresearch.com.

A replay of the webcast will be available approximately two hours after the
conclusion of the call and will remain available for 90 days. An audio replay
will also be available approximately one hour after the conclusion of the call
and will be available for 30 days. The audio replay can be accessed by dialing
877-870-5176 (toll free from the US and Canada), or 858-384-5517 (for
international callers) and entering Event ID 10028640.

About Arrowhead Research Corporation

Arrowhead Research Corporation is a clinical stage targeted therapeutics
company with development programs in oncology, obesity, and chronic hepatitis
B virus infection. The company is leveraging its platform technologies to
design and develop peptide-drug conjugates (PDCs) that specifically home to
cell types of interest while sparing off-target tissues, create targeted drugs
based on the gene silencing RNA interference (RNAi) mechanism, and work 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.

Contact:

Arrowhead Research Corporation
Vince Anzalone, CFA, 626-304-3400
or
The Trout Group
Lauren Glaser, 646-378-2972
ir@arrowres.com