Arbutus Biopharma Corp

Availability of Annual Report on Form 10-K

A copy of our 2025 Annual Report to Shareholders, consisting of our Annual Report on Form 10-K for the year ended December 31, 2025, has been made available or mailed concurrently with this Proxy Statement/Circular, without charge, to Shareholders entitled to notice of and to vote at the Annual Meeting, provided that we have not included the exhibits to the Form 10-K. We will provide copies of the exhibits to the Form 10-K upon request by eligible Shareholders, provided we may impose a reasonable fee for providing such exhibits, which is limited to our reasonable expenses. Requests for copies of such exhibits should be mailed to Corporate Secretary, 701 Veterans Circle, Warminster, Pennsylvania 18974, United States.

Interests of Informed Persons in Material Transactions

Roivant is an “informed person” (as defined in National Instrument 51-102 — Continuous Disclosure Obligations) as a result of beneficially owning more than 10% of the voting rights attached to our issued and outstanding Common Shares. Matthew Gline is an “informed person” (as defined in National Instrument 51-102 — Continuous Disclosure Obligations) as a result of his position as an executive officer of Roivant.

Roivant had a material interest in the LNP Delivery Transaction. The material terms of the LNP Delivery Transaction and Roivant’s interests therein are described under the heading “LNP Delivery Transaction.”

The address of Roivant is 7th Floor, 50 Broadway, London, SW1H 0DB, United Kingdom. The foregoing disclosure in this paragraph is based upon information supplied by the named directors and executive officers.

To our knowledge, no “informed person” (as defined in National Instrument 51-102 — Continuous Disclosure Obligations) or any associate or affiliate of any such informed person had any material interest, direct or indirect, in any transaction or proposed transaction which has materially affected or would materially affect us or any of our subsidiaries since the beginning of the most recently completed financial year, other than as set out herein.

Management Contracts

There are no management functions of ours which are performed by an individual or company other than our directors or executive officers or one of our subsidiaries.

Additional Information

Additional information relating to us, including our most current Annual Report on Form 10-K for the fiscal year ended December 31, 2025, our consolidated financial statements for the fiscal year ended December 31, 2025, together with the report of our independent registered public accounting firm thereon and management’s discussion and analysis of our financial condition and results of operations for fiscal 2025 which provide financial information concerning us can be found on the Canadian Securities Administrators’ SEDAR+ at www.sedarplus.ca or on the website of the SEC at www.sec.gov. Copies of those documents, as well as any additional copies of this Proxy Statement/Circular, are available at no cost upon written request to the Corporate Secretary, 701 Veterans Circle, Warminster, Pennsylvania 18974, United States. Additionally, the reports and other information filed by us with the SEC can be found on the SEC’s website at www.sec.gov.