Company: ARWR
Filing Date: 2025-12-11
Form Type: S-3ASR
Source: 0001193125-25-314755
Chunk: 23

Company: ARROWHEAD PHARMACEUTICALS, INC.
Filing Date: 2025-12-11
Form: S-3ASR
Chunk 23
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incorporated in this prospectus by reference from the Company’s Annual Report on Form 10-K for the year ended September 30, 2025 have been audited by Rose, Snyder & Jacobs, LLP as stated in
their report incorporated by reference in this prospectus and elsewhere in this registration statement, and given upon the authority of said firm as experts in auditing and accounting.

LEGAL MATTERS

Certain legal matters, including the legality of the securities offered, will be passed upon by Gibson, Dunn & Crutcher LLP, San
Francisco, California. Additional legal matters may be passed upon for us or any underwriters, dealers or agents, by counsel that we will name in the applicable prospectus supplement.

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WHERE YOU CAN FIND MORE INFORMATION

We must comply with the informational requirements of the Exchange Act, and we are required to file reports and proxy statements and other
information with the SEC. This prospectus, which forms part of the registration statement, does not contain all of the information included in the registration statement, including its exhibits and schedules. For further information about us and the
securities described in this prospectus, you should refer to the registration statement, its exhibits and schedules and our reports, proxies, information statements and other information filed with the SEC. Our filings are available to the public on
the Internet, through a database maintained by the SEC at http://www.sec.gov.Our filings are also available, free of charge, on our website at www.arrowheadpharma.com.The information contained in, or that can be accessed through, our
website is not incorporated by reference herein and is not part of this prospectus.

Statements contained in this prospectus as to the
contents of any contract or other document are not necessarily complete, and in each instance we refer you to the copy of the contract or document filed as an exhibit to the registration statement, each such statement being qualified in all respects
by such reference.

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INCORPORATION OF CERTAIN INFORMATION BY REFERENCE The SEC allows us to incorporate by reference in this prospectus the information that we file with it. Incorporation by reference means that we can disclose important information to you by referring you to other documents that are legally considered to be part of this prospectus. Later information that we file with the SEC will automatically update and supersede the information in this prospectus, any supplement and the documents listed below. Our SEC file number is 0-21898.We incorporate by reference the specific documents listed below:

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