Exhibit 32.1
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002
In connection with the Annual Report of Arbutus Biopharma Corporation (the “Company”) on Form 10-K/A for the year ended December 31, 2015, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I Mark J. Murray, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:
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| 1. | The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and |
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| 2. | The information contained in the Report fairly represents, in all material respects, the financial condition and results of the operations of the Company. |
Date: March 10, 2016
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| | | | /s/ Mark J. Murray |
| | Name: | | Mark J. Murray |
| | Title: | | President and Chief Executive Officer |
