ARROWHEAD PHARMACEUTICALS, INC. — Director's Dealing 2009

Aug 24, 2009

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ARROWHEAD RESEARCH CORP (ARWR)
CIK: 0000879407
Period of Report: 2009-07-17

Reporting Person: McDonnel Paul Clayton (CFO (former))

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-07-17	Stock Option	$4.61	J	100000	Disposed	2016-03-13	Common stock (100000)	Direct
2009-07-17	Stock Option	$5.00	J	100000	Disposed	2016-08-21	Common Stock (100000)	Direct

Footnotes

F1: Voluntary termination of out-of-the-money options to allow for sufficient available shares for issurance in a financing transaction.