ABUS · NASDAQ · Biotechnology

Arbutus Biopharma (ABUS)

Develops chronic HBV therapies while monetizing legacy lipid-nanoparticle IP.

$5.01
vs last close+0.01 (+0.20%)

13F · 13D/G · Form 4

Institutions71.79%142.04M shares
182 holders · as of Jun 30, 2026
Insiders0.33%647.4K shares
5 holders · as of Feb 2, 2026
Strategic holders19.64%38.85M shares
1 holder · as of Feb 25, 2025
Other8.24%16.31M shares
remainder

197.85M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

13F · 13D/G · Form 4

HolderStakeSharesDate
Roivant Sciences Ltd.1,2Strategic10 percent owner
19.64%38.85Mfiled Feb 25, 2025
Two Seas Capital LPInstitution
9.65%19.10Mas of Jun 30, 2026
Morgan StanleyInstitution
8.95%17.70Mas of Jun 30, 2026
Whitefort Capital Management, LPInstitution
7.98%15.79Mas of Jun 30, 2026
Whitefort Capital Master Fund, LPInstitution
7.98%15.79Mfiled Sep 4, 2026
BlackRock, Inc.Institution
6.96%13.77Mas of Jun 30, 2026
State Street CorpInstitution
3.98%7.87Mas of Jun 30, 2026
Rubric Capital Management LPInstitution
3.81%7.53Mas of Jun 30, 2026
Vanguard Capital Management LLCInstitution
3.54%7.01Mas of Jun 30, 2026
Barclays PLCInstitution
2.13%4.21Mas of Jun 30, 2026
Geode Capital Management, LLCInstitution
2.08%4.12Mas of Jun 30, 2026
Goldman Sachs Group IncInstitution
1.77%3.51Mas of Jun 30, 2026
Bank of America Corp /DE/Institution
1.34%2.65Mas of Jun 30, 2026
Blackbarn Capital Partners LPInstitution
1.26%2.50Mas of Jun 30, 2026
Legal & General Group PLCInstitution
1.25%2.47Mas of Jun 30, 2026
Woodline Partners LPInstitution
1.15%2.28Mas of Jun 30, 2026
Jefferies Financial Group Inc.Institution
0.87%1.71Mas of Jun 30, 2026
Nomura Holdings IncInstitution
0.83%1.64Mas of Jun 30, 2026
Vanguard Portfolio Management LLCInstitution
0.78%1.54Mas of Jun 30, 2026
Charles Schwab Investment Management IncInstitution
0.72%1.43Mas of Jun 30, 2026
Sixth Street Partners Management Company, L.P.Institution
0.72%1.43Mas of Jun 30, 2026
Northern Trust CorpInstitution
0.72%1.42Mas of Jun 30, 2026
Advisor Group Holdings, Inc.Institution
0.68%1.35Mas of Jun 30, 2026
Adar1 Capital Management, LLCInstitution
0.64%1.27Mas of Jun 30, 2026
Deltroit Asset Management (UK) LLPInstitution
0.61%1.20Mas of Jun 30, 2026
  1. Roivant Sciences Ltd.'s transaction reports restate only vehicles that traded; the 2025 ownership statement (38.85M) is used instead.
  2. Roivant Sciences Ltd. reports a block also reported by another filer; it is counted once, under that filer.

13F, as of Jun 30, 2026

182 holders · 142.04M shares · 37 new positions · 101 increased · 39 reduced · 26 closed

HolderShares% outstandingChg q/qFiled
Two Seas Capital LP19.10M9.65%+538.0KAug 12, 2026
Morgan Stanley17.70M8.95%−8.19MAug 13, 2026
Whitefort Capital Management, LP15.79M7.98%+863.4KAug 14, 2026
BlackRock, Inc.13.77M6.96%+799.1KAug 7, 2026
State Street Corp7.87M3.98%+1.53MAug 7, 2026
Rubric Capital Management LP7.53M3.81%+906.5KAug 14, 2026
Vanguard Capital Management LLC7.01M3.54%+321.8KAug 13, 2026
Barclays PLC4.21M2.13%−108.2KAug 14, 2026

13D/G · 5% or more, as filed

Holder% of classSharesFormFiled
Roivant Sciences Ltd.20.50%38.85M13DFeb 25, 2025
Morgan Stanley13.50%25.91M13GFeb 11, 2026
Two Seas Capital LP9.40%18.56M13GMay 15, 2026
Whitefort Capital Master Fund, LP8.00%15.79M13GSep 4, 2026
Whitefort Capital GP, LLCincl. Whitefort Capital Management, LP, Whitefort Capital Master Fund, LP +3 more8.00%15.79M13DApr 28, 2026

Form 4

Latest trades

No open-market trades in the last 12 months.

House and Senate disclosures

Not reported.