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Arrowhead Pharmaceuticals, Inc. Information Request Form

Levi & Korsinsky announces the commencement of a class action lawsuit in the USDC for the Central District of California on behalf of shareholders of Arrowhead Pharmaceuticals, Inc. (“Arrowhead Pharmaceuticals” or the “Company”) (NASDAQ: ARWR) who purchased shares between May 11, 2015 and November 29, 2016.

The complaint alleges that during the Class Period, Arrowhead made false and misleading statements and/or failed to disclose that: (1) its drug candidate ARC-520 was fatal at certain doses; (2) the U.S. Food & Drug Administration was unlikely to approve ARC-520 as a hepatitis B treatment; (3) the Company overstated the approval prospects and commercial viability of ARC-520; and (4) as a result of the above, Arrowhead’s public statements were materially false and misleading at all relevant times.

On November 8, 2016, after the close of the market, Arrowhead announced that the United States Food & Drug Administration had decided to place a clinical hold on the Company’s Heparc-2004 clinical study of ARC-520. Then on November 29, 2016, Arrowhead announced it would discontinue the development of 3 hepatitis treatments and trim its workforce by 30 percent.

If you suffered a loss in Arrowhead you have until January 17, 2017 to request that the Court appoint you as lead plaintiff. Your ability to share in any recovery doesn’t require that you serve as a lead plaintiff.

To receive more information, please fill out the form.

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Levi & Korsinsky, LLP does not share your information with others. There is no cost or obligation for you to submit.

This submission does not create an attorney-client relationship. If we believe that you might be an appropriate lead plaintiff, we will contact you to discuss whether to establish an attorney-client relationship.

This letter confirms that you have retained Levi & Korsinsky, LLP to represent you as a named plaintiff in a shareholder action involving Arrowhead Pharmaceuticals, Inc.

We agree to advance all expenses in the litigation, which means that you are not liable to pay any of the expenses of the lawsuit, whether attorneys' fees or costs. Regardless of the result, we will never ask you to directly pay for any attorneys' fees or costs. Should we obtain a favorable result, we may ask the court to award us compensation to be paid by the defendants or as a portion of any class benefit, but, again, we will never ask you to directly pay any of the costs of this litigation.

As the client you are entitled to direct the litigation in any way you deem proper, and may at any time order us to dismiss the case or opt-out. Should you choose to do so, we will never ask you to reimburse us directly for any legal fees or expenses. During the course of this litigation, we may employ and/or work with other law firms to prosecute your case.

We look forward to representing you and other Arrowhead Pharmaceuticals, Inc. shareholders.

Sincerely,

Levi & Korsinsky,LLP

Joseph Levi

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