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Arrowhead Pharmaceuticals Prices Upsized Offerings of Convertible Senior Notes, Common Stock, and Pre-Funded Warrants

Arrowhead Pharmaceuticals (ARWR) | Jan. 7, 2026

By Noah Edwards

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Arrowhead Pharmaceuticals announced the pricing of $625 million convertible senior notes due 2032 and 3,100,776 shares of common stock.

The notes will mature on January 15, 2032, with an initial conversion price of approximately $87.07 per share.

Arrowhead granted underwriters a 30-day option to purchase additional notes and shares of common stock.

Offering Details

$625 million aggregate principal amount of 0.00% convertible senior notes due 2032 and 3,100,776 shares of common stock priced at $64.50 per share.

Conversion Terms

Initial conversion rate of 11.4844 shares per $1,000 principal amount with a premium of 35.0% over the public offering price.

Redemption Information

Notes will be redeemable for cash at Arrowhead's option if the stock price exceeds 130% of the conversion price for a specified period.

  • The net proceeds from the note offering are estimated to be $608.2 million, increasing to $681.3 million if the underwriters fully exercise their option.
  • The common stock offering is expected to generate approximately $188.3 million, potentially reaching $216.6 million with full underwriter exercise.

Arrowhead Pharmaceuticals' successful pricing of offerings indicates investor interest and potential for significant capital inflow. The company's strategic approach to financing aligns with growth objectives.