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Activist & passive stakes

Investors crossing the 5% ownership line, from SEC Schedule 13D (activist) and 13G (passive) filings. Newest first.

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Filing
NewAmendmentsAll
Stake type
ActivistPassive
Min % owned
≥10%≥20%
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All filings, new and amended.1–3 of 3
  • PassiveAmendment 1
    Nov 6, 2026
    XENE · Xenon Pharmaceuticals Inc
    T. Rowe Price Investment Management, Inc.
    10.3% · 9,996,124 shSEC
  • PassiveNew
    Nov 6, 2026
    XENE · Xenon Pharmaceuticals Inc
    T. Rowe Price Investment Management, Inc.
    8.2% · 7,905,757 shSEC
  • PassiveAmendment 9
    Nov 5, 2026
    XENE · Xenon Pharmaceuticals Inc
    Fmr Llc
    11.5% · 11,136,649 shSEC