PASADENA, Calif.--(BUSINESS WIRE)---- $arwr--Arrowhead Pharmaceuticals, Inc. (NASDAQ: ARWR) today announced its intention to offer, subject to market and other conditions,$500 million aggregate principal amount of convertible senior notes due 2032 (the "notes†) and $200 million of common stock in separate public offerings registered under the Securities Act of 1933, as amended. Arrowhead also expects to grant the underwriters of the note offering a 30-day option to purchase up to an additional$75 milli. ...