Arbutus Biopharma Corporation
DE ˙ DB ˙ CA03879J1003
3,73 € ↑0,06 (1,63%)
2026-06-04
DEL PRIS
SecurityDE:I9DN / Arbutus Biopharma Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership178,785 shares
Latest Disclosed Value $ 804,525
Rhumbline Advisers reports 2.44% decrease in ownership of I9DN / Arbutus Biopharma Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 178,785 shares of Arbutus Biopharma Corporation (DE:I9DN) valued at $655,783 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 183,250 shares of Arbutus Biopharma Corporation. This represents a change in shares of -2.44% during the quarter. The current value of the position is $666,868 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)
2026-05-12 2026-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 178,785 -4,465 -2.44 805 -8.74 0.0007
2026-02-13 2025-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 183,250 -28,534 -13.47 881 -8.32 0.0007
2025-11-06 2025-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 211,784 3,979 1.91 961 49.69 0.0008
2025-08-12 2025-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 207,805 7,048 3.51 642 -8.29 0.0005
2025-05-29 2025-03-31 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 200,757 12,159 6.45 701 13.64 0.0007
2025-04-08 2025-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 200,757 12,159 701 0.0007
2025-05-29 2024-12-31 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 188,598 10,724 6.03 617 -9.94 0.0006
2025-01-30 2024-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 188,598 10,724 617 0.0006
2024-11-12 2024-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 177,874 -7,193 -3.89 685 19.79 0.0006
2024-08-01 2024-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 185,067 14,607 8.57 572 30.07 0.0005
2024-05-09 2024-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 170,460 5,836 3.55 440 6.81 0.0004
2024-02-08 2023-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 164,624 -3,608 -2.14 412 20.53 0.0004
2023-11-09 2023-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 168,232 2,415 1.46 342 -10.50 0.0004
2023-08-08 2023-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 165,817 6,690 4.20 381 0.0004
2023-05-11 2023-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 159,127 9,592 6.41 0 -100.00 0.0006
2023-02-14 2022-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 149,535 6,695 4.69 348 27.47 0.0005
2022-11-10 2022-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 142,840 7,916 5.87 273 -25.41 0.0004
2022-08-11 2022-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 134,924 31,146 30.01 366 18.45 0.0005
2022-05-12 2022-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 103,778 13,243 14.63 309 -12.22 0.0004
2022-02-10 2021-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 90,535 71 0.08 352 -9.28 0.0004
2021-11-12 2021-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 90,464 2,546 2.90 388 45.86 0.0005
2021-08-05 2021-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 87,918 87,918 266 0.0003
2019-08-14 2019-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 0 -48,597 -100.00 0 -100.00
2019-05-01 2019-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 48,597 -435 -0.89 174 -7.45 0.0003
2019-01-31 2018-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 49,032 15,416 45.86 188 -40.88 0.0004
2018-11-07 2018-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 33,616 260 0.78 318 30.86 0.0006
2018-08-06 2018-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 33,356 33,356 243 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.