13D·WATCH Activist + Insider Intelligence

SCHEDULE 13D/A Filed 2026-04-13 Event 2026-04-10 Intent: UNCLEAR SEC 0000921895-26-000973 →

Whitefort Capital Management, LP → Arbutus Biopharma Corp ABUS

Stake: 8.10% Shares: 15,794,261 CUSIP: 03879J100 Class: Common Shares, without par value

AI Analyst Brief conf: low

Whitefort Capital initiates a 13D/A on Arbutus Biopharma (ABUS) with a ~15.8M share stake, representing the first activist position on this issuer in 90 days; the amendment suggests an evolving agenda, though no explicit purpose is disclosed in the extract. High short interest (16.2M shares, DTC 7.04) creates a notable squeeze dynamic if Whitefort pushes for a catalyst.

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)

0 transactions

0 buys · 0 sales · 0 awards/exercises

Issuer Cluster

1 13D/G filings on this issuer

0 other filings besides this one

Filer Track Record

1 filings by this filer

0 other filings in the data moat

Short Interest · settle 2026-03-31

DTC 7.04

16,174,093 shares short · -1.4% vs prior

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