Institutional Ownership
Arbutus Biopharma Corp
CUSIP 03879J100COMABUSQ1 2026
13D / 13G Filings
24
Schedule 13D/13G on record
Beneficial Filers
9
Distinct reporting persons
Largest Stake
29.1%
Max % of class reported
Institutional Holders
160
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
24 filings · latest Feb 17, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 17, 2026 | Two Seas Capital LP | 13G/A | 6.5% | — | SEC |
| 2 | Feb 11, 2026 | Morgan Stanley | 13G/A | 13.5% | 25.91M | SEC |
| 3 | Aug 13, 2025 | Two Seas Capital LP | 13G | 5.4% | — | SEC |
| 4 | Feb 25, 2025 | Roivant Sciences Ltd. | 13D/A | 20.5% | — | SEC |
| 5 | Feb 21, 2025 | Whitefort Capital Master Fund, LP | 13D/A | 7.0% | — | SEC |
| 6 | Feb 18, 2025 | Roivant Sciences Ltd. | 13D/A | 20.5% | — | SEC |
| 7 | Feb 3, 2025 | Morgan Stanley | 13G/A | 11.4% | 21.52M | SEC |
| 8 | Nov 14, 2024 | Two Seas Capital LP | 13G/A | 4.4% | 8.39M | SEC |
| 9 | Jun 10, 2024 | Morgan Stanley | 13G | 10.3% | 19.39M | SEC |
| 10 | May 17, 2024 | Whitefort Capital Management, LP | 13D/A | 6.8% | 12.87M | SEC |
14 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Arbutus Biopharma Corp.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Morgan Stanley | 25.89M | $116.51M |
| 2 | Two Seas Capital LP | 18.56M | $83.51M |
| 3 | Whitefort Capital Management, LP | 14.93M | $67.19M |
| 4 | Blackrock, Inc. | 12.97M | $58.35M |
| 5 | Rubric Capital Management LP | 6.63M | $29.82M |
| 6 | State Street Corp | 6.34M | $28.54M |
| 7 | Barclays PLC | 4.32M | $19.42M |
| 8 | Geode Capital Management, LLC | 3.77M | $16.98M |
| 9 | Adar1 Capital Management, LLC | 3.13M | $14.10M |
| 10 | Adage Capital Partners Gp, L.L.C. | 2.66M | $11.99M |