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

Stake type

Min % owned

Amendments only.1–2 of 2

PassiveAmendment 1
Nov 6, 2026
XENE · Xenon Pharmaceuticals Inc
T. Rowe Price Investment Management, Inc.
10.3% · 9,996,124 shSEC
PassiveAmendment 9
Nov 5, 2026
XENE · Xenon Pharmaceuticals Inc
Fmr Llc
11.5% · 11,136,649 shSEC

Filing	Symbol	Holder	% Owned	Shares	Filed	SEC filing
PassiveAmendment 1	XENE	T. Rowe Price Investment Management, Inc. in Xenon Pharmaceuticals Inc	10.3%	9,996,124	Nov 6, 2026	SEC
PassiveAmendment 9	XENE	Fmr Llc in Xenon Pharmaceuticals Inc	11.5%	11,136,649	Nov 5, 2026	SEC