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 1Below 5%
Oct 28, 2026
FULC · Fulcrum Therapeutics, Inc.
Bank Of America Corp /De/
1.5% · 1,114,867 shSEC
PassiveAmendment 1
Oct 27, 2026
FULC · Fulcrum Therapeutics Inc
BlackRock Portfolio Management LLC
8.1% · 6,155,437 shSEC

Filing	Symbol	Holder	% Owned	Shares	Filed	SEC filing
PassiveAmendment 1Below 5%	FULC	Bank Of America Corp /De/ in Fulcrum Therapeutics, Inc.	1.5%	1,114,867	Oct 28, 2026	SEC
PassiveAmendment 1	FULC	BlackRock Portfolio Management LLC in Fulcrum Therapeutics Inc	8.1%	6,155,437	Oct 27, 2026	SEC