Arbutus Biopharma Corporation
DE ˙ DB ˙ CA03879J1003
3,67 € ↓ -0,12 (-3,17%)
2026-06-03
AKTIENPREIS
SecurityDE:I9DN / Arbutus Biopharma Corporation
InstitutionVanguard Group Inc
Latest Disclosed Ownership9,242,437 shares
Latest Disclosed Value $ 44,456,122
Vanguard Group Inc reports 2.80% increase in ownership of I9DN / Arbutus Biopharma Corporation

On January 29, 2026 - Vanguard Group Inc filed a 13F-HR form disclosing ownership of 9,242,437 shares of Arbutus Biopharma Corporation (DE:I9DN) valued at $36,248,838 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 7, 2025 disclosing 8,991,082 shares of Arbutus Biopharma Corporation. This represents a change in shares of 2.80% during the quarter. The current value of the position is $33,919,744 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)
2026-01-29 2025-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 9,242,437 251,355 2.80 44,456 8.91 0.0006
2025-11-07 2025-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 8,991,082 -94,004 -1.03 40,820 45.41 0.0006
2025-08-11 2025-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 9,085,086 131,263 1.47 28,073 -10.16 0.0005
2025-05-09 2025-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 8,953,823 -27,041 -0.30 31,249 6.41 0.0006
2025-02-11 2024-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 8,980,864 62,282 0.70 29,367 -14.47 0.0005
2024-11-13 2024-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 8,918,582 1,896,487 27.01 34,337 58.24 0.0006
2024-08-13 2024-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 7,022,095 1,034,188 17.27 21,698 40.46 0.0004
2024-05-10 2024-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 5,987,907 -976 -0.02 15,449 3.18 0.0003
2024-03-11 2023-12-31 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 5,988,883 40,861 0.69 14,972 24.00 0.0003
2024-02-14 2023-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 5,988,883 40,861 14,972 0.0003
2023-12-18 2023-09-30 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 5,948,022 128,668 2.21 12,074 -9.79 0.0003
2023-11-14 2023-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 5,948,022 128,668 12,074 0.0001
2023-08-14 2023-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 5,819,354 178,152 3.16 13,385 -21.69 0.0003
2023-07-14 2023-03-31 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 5,641,202 276,177 5.15 17,093 36.74 0.0004
2023-05-15 2023-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 5,641,202 276,177 17,093 0.0001
2023-02-10 2022-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 5,365,025 99,141 1.88 12,501 24.28 0.0003
2022-11-14 2022-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 5,265,884 64,485 1.24 10,058 -28.64 0.0003
2022-08-12 2022-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 5,201,399 463,221 9.78 14,095 -0.18 0.0004
2022-05-13 2022-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 4,738,178 182,684 4.01 14,120 -20.32 0.0003
2022-02-14 2021-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 4,555,494 789,515 20.96 17,721 9.69 0.0004
2021-11-12 2021-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 3,765,979 29,746 0.80 16,156 42.71 0.0004
2021-08-13 2021-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 3,736,233 904,006 31.92 11,321 20.04 0.0003
2021-05-14 2021-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 2,832,227 84,468 3.07 9,431 -3.32 0.0003
2021-02-12 2020-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 2,747,759 506,861 22.62 9,755 39.06 0.0003
2020-11-16 2020-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 2,240,898 414,967 22.73 7,015 111.10 0.0002
2020-08-14 2020-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 1,825,931 712,683 64.02 3,323 195.64 0.0001
2020-05-15 2020-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 1,113,248 477,440 75.09 1,124 -36.43 0.0000
2020-02-14 2019-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 635,808 286,577 82.06 1,768 231.71 0.0001
2019-11-14 2019-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 349,231 140,038 66.94 533 22.53 0.0000
2019-08-14 2019-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 209,193 -73,433 -25.98 435 -57.02 0.0000
2019-05-15 2019-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 282,626 -3,110 -1.09 1,012 -7.50 0.0000
2019-02-14 2018-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 285,736 1,260 0.44 1,094 -59.30 0.0000
2018-12-13 2018-09-30 13F/A-2 ARBUTUS BIOPHARMA COM 03879J100 284,476 195,542 219.87 2,688 313.54 0.0001
2018-11-23 2018-09-30 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 284,476 0 2,688 0.0001
2018-11-14 2018-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 284,476 195,542 2,688
2018-08-14 2018-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 88,934 88,934 650 0.0000
2018-02-14 2017-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 0 -78,634 -100.00 0 -100.00
2017-11-14 2017-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 78,634 1,221 1.58 488 74.91 0.0000
2017-08-24 2017-06-30 13F/A-1 ARBUTUS BIOPHARMA COM 03879J100 77,413 2,035 2.70 279 13.88 0.0000
2017-08-11 2017-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 77,413 2,035 279
2017-05-12 2017-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 75,378 888 1.19 245 33.88 0.0000
2017-02-14 2016-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 74,490 925 1.26 183 -27.67 0.0000
2016-11-14 2016-09-30 13F ARBUTUS BIOPHARMA COM 03879J100 73,565 7,489 11.33 253 10.00 0.0000
2016-08-10 2016-06-30 13F ARBUTUS BIOPHARMA COM 03879J100 66,076 -7,991 -10.79 230 -24.84 0.0000
2016-05-13 2016-03-31 13F ARBUTUS BIOPHARMA COM 03879J100 74,067 1,617 2.23 306 -4.97 0.0000
2016-02-08 2015-12-31 13F ARBUTUS BIOPHARMA COM 03879J100 72,450 72,450 322 0.0000
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.