Arbutus Biopharma Corporation
US ˙ NasdaqGS ˙ CA03879J1003

SecurityABUS / Arbutus Biopharma Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,277,859 shares
Latest Disclosed Value $ 5,750,368
Northern Trust Corp reports 3.33% increase in ownership of ABUS / Arbutus Biopharma Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,277,859 shares of Arbutus Biopharma Corporation (US:ABUS) valued at $5,750,366 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,236,689 shares of Arbutus Biopharma Corporation. This represents a change in shares of 3.33% during the quarter. The current value of the position is $5,558,687 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,277,859 41,170 3.33 5,750 -3.33 0.0002
2026-02-17 2025-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,236,689 -52,724 -4.09 5,948 1.62 0.0002
2025-11-14 2025-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,289,413 5,194 0.40 5,854 47.51 0.0007
2025-08-13 2025-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,284,219 618 0.05 3,968 -11.41 0.0005
2025-05-13 2025-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,283,601 -47,082 -3.54 4,480 2.94 0.0007
2025-02-14 2024-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,330,683 102,241 8.32 4,351 -7.99 0.0006
2024-11-13 2024-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,228,442 177,117 16.85 4,730 45.60 0.0008
2024-08-14 2024-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,051,325 -5,279 -0.50 3,249 19.15 0.0005
2024-05-14 2024-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,056,604 -11,617 -1.09 2,726 2.10 0.0005
2024-02-13 2023-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,068,221 2,849 0.27 2,671 23.50 0.0005
2023-11-13 2023-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,065,372 21,911 2.10 2,163 -9.88 0.0004
2023-08-11 2023-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,043,461 93,571 9.85 2,400 -16.64 0.0005
2023-05-15 2023-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 949,890 31,149 3.39 2,878 34.49 0.0006
2023-02-13 2022-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 918,741 18,194 2.02 2,141 24.42 0.0004
2022-11-14 2022-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 900,547 3,575 0.40 1,720 -29.25 0.0004
2022-08-12 2022-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 896,972 122,733 15.85 2,431 5.37 0.0005
2022-05-13 2022-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 774,239 39,771 5.41 2,307 -19.25 0.0004
2022-02-08 2021-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 734,468 33,964 4.85 2,857 -4.93 0.0005
2021-11-15 2021-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 700,504 -18,655 -2.59 3,005 37.91 0.0005
2021-08-13 2021-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 719,159 586,456 441.93 2,179 392.99 0.0004
2021-05-12 2021-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 132,703 18,500 16.20 442 9.14 0.0001
2021-02-11 2020-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 114,203 -5,480 -4.58 405 8.00 0.0001
2020-11-16 2020-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 119,683 16,896 16.44 375 99.47 0.0001
2020-08-14 2020-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 102,787 102,787 188 0.0000
2019-11-13 2019-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 0 -293,078 -100.00 0 -100.00
2019-08-13 2019-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 293,078 -20,682 -6.59 610 -45.68 0.0001
2019-05-13 2019-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 313,760 2,642 0.85 1,123 -5.71 0.0003
2019-02-12 2018-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 311,118 -20,590 -6.21 1,191 -62.01 0.0003
2018-11-14 2018-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 331,708 35,292 11.91 3,135 44.87 0.0008
2018-09-18 2018-06-30 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 296,416 296,416 2,164 0.0005
2018-08-14 2018-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 296,416 2,164 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.