Based on data from the past 90 days ending December 12, 2025, Arbutus Biopharma's three largest insider shareholders are Interim President & CEO Michael J. Mcelhaugh (1.66Mn shares), Chief Financial Officer David C Hastings (249.82K shares), Chief Medical Officer Karen Sims (155.49K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Sciences Ltd. Roivant | 38,847,462 | 20 Oct, 2021 | |
| Michael J. Mcelhaugh | Interim President & CEO | 1,658,003 | 19 Feb, 2025 |
| Michael J. Sofia | Chief Scientific Officer | 1,485,121 | 05 Feb, 2024 |
| David C Hastings | Chief Financial Officer | 249,824 | 19 Feb, 2025 |
| William H. Collier | President And CEO | 216,500 | 03 Feb, 2023 |
| Karen Sims | Chief Medical Officer | 155,494 | 19 Feb, 2025 |
| J. Christopher Naftzger | General Counsel And Cco | 140,544 | 19 Feb, 2025 |
| Elizabeth Howard | EVP And GC And Compliance | 86,024 | 03 Feb, 2023 |
| Keith S Manchester | 46,069 | 16 Aug, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 14 Feb, 2025 | David C Hastings | Common Shares | A | 90,100 | $0.00 | 249,824 | D | A |
| 14 Feb, 2025 | J. Christopher Naftzger | Common Shares | A | 54,300 | $0.00 | 140,544 | D | A |
| 14 Feb, 2025 | Michael J. Mcelhaugh | Common Shares | A | 177,000 | $0.00 | 1,658,003 | D | A |
| 14 Feb, 2025 | Karen Sims | Common Shares | A | 49,300 | $0.00 | 155,494 | D | A |
| 04 Feb, 2025 | David C Hastings | Common Shares | D | 22,183 | $3.28 | 159,724 | D | S |
| 04 Feb, 2025 | Karen Sims | Common Shares | D | 19,348 | $3.28 | 106,194 | D | S |
| 04 Feb, 2025 | J. Christopher Naftzger | Common Shares | D | 11,333 | $3.28 | 86,244 | D | S |
| 04 Feb, 2025 | Michael J. Mcelhaugh | Common Shares | D | 23,790 | $3.28 | 1,481,003 | D | S |
| 14 Aug, 2024 | Keith S Manchester | Common Shares | A | 54,915 | $0.56 | 54,915 | D | M |
| 14 Aug, 2024 | Keith S Manchester | - | - | 54,915 | D | |||
| 14 Aug, 2024 | Keith S Manchester | - | - | 46,069 | D | |||
| 14 Aug, 2024 | Keith S Manchester | Common Shares | D | 8,846 | $3.69 | 46,069 | D | S |
| 01 Feb, 2024 | J. Christopher Naftzger | Common Shares | A | 95,100 | $0.00 | 95,100 | D | A |
| 01 Feb, 2024 | Michael J. Mcelhaugh | Common Shares | A | 123,800 | $0.00 | 1,514,957 | D | A |
| 01 Feb, 2024 | Michael J. Sofia | Common Shares | A | 109,500 | $0.00 | 1,495,103 | D | A |
| 01 Feb, 2024 | David C Hastings | Common Shares | A | 112,500 | $0.00 | 191,500 | D | A |
| 01 Feb, 2024 | Karen Sims | - | - | 129,900 | D | |||
| 01 Feb, 2024 | Karen Sims | Common Shares | A | 101,000 | $0.00 | 129,900 | D | A |
| 02 Feb, 2024 | Karen Sims | Common Shares | D | 4,358 | $2.31 | 125,542 | D | S |
| 02 Feb, 2024 | Michael J. Sofia | Common Shares | D | 9,982 | $2.31 | 1,485,121 | D | S |