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

All filings, new and amended.1–2 of 2

PassiveAmendment 5
Nov 2, 2026
CRBP · Corbus Pharmaceuticals Holdings, Inc.
Cormorant Asset Management, LP
7.76% · 1,500,000 shSEC
PassiveAmendment 1Below 5%
Oct 29, 2026
CRBP · Corbus Pharmaceuticals Holdings, Inc.
Aberdeen Group plc
0% · 0 shSEC

Filing	Symbol	Holder	% Owned	Shares	Filed	SEC filing
PassiveAmendment 5	CRBP	Cormorant Asset Management, LP in Corbus Pharmaceuticals Holdings, Inc.	7.76%	1,500,000	Nov 2, 2026	SEC
PassiveAmendment 1Below 5%	CRBP	Aberdeen Group plc in Corbus Pharmaceuticals Holdings, Inc.	0%	0	Oct 29, 2026	SEC