According to recent filings covering the 90 days ending February 19, 2026, the three most significant insider holders at Arbutus Biopharma are TenPercentOwner Sciences Ltd. Roivant (38.85Mn shares), Interim President & Ceo Michael J. Mcelhaugh (1.66Mn shares), Chief Scientific Officer Michael J. Sofia (1.49Mn 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 |
| Tuan Nguyen | Chief Financial Officer | 73,500 | 02 Feb, 2026 |
| Keith S Manchester | 46,069 | 16 Aug, 2024 | |
| Lindsay Androski | President And Ceo | 28,000 | 02 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 02 Feb, 2026 | Lindsay Androski | Common Shares | A | 28,000 | $0.00 | 28,000 | D | A |
| 02 Feb, 2026 | Tuan Nguyen | Common Shares | A | 73,500 | $0.00 | 73,500 | D | A |
| 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 | David C Hastings | - | - | 159,724 | D | |||
| 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 |
| 04 Feb, 2025 | Karen Sims | Common Shares | D | 19,348 | $3.28 | 106,194 | D | S |
| 14 Aug, 2024 | Keith S Manchester | - | - | 54,915 | D | |||
| 14 Aug, 2024 | Keith S Manchester | Common Shares | A | 54,915 | $0.56 | 54,915 | D | M |
| 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 |
| 02 Feb, 2024 | David C Hastings | Common Shares | D | 9,593 | $2.31 | 181,907 | D | S |
| 02 Feb, 2024 | Michael J. Sofia | Common Shares | D | 9,982 | $2.31 | 1,485,121 | D | S |
| 02 Feb, 2024 | Michael J. Mcelhaugh | - | - | 1,504,793 | D | |||
| 02 Feb, 2024 | Michael J. Mcelhaugh | Common Shares | D | 10,164 | $2.31 | 1,504,793 | D | S |
| 02 Feb, 2024 | Karen Sims | Common Shares | D | 4,358 | $2.31 | 125,542 | D | S |