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 30, 2026
WRB · W R Berkley Corp
Vanguard Capital Management
4.44% · 16,502,067 shSEC
PassiveAmendment 14Below 5%
Oct 27, 2026
WRB · W. R. Berkley Corporation
BlackRock, Inc.
4.6% · 17,215,830 shSEC

Filing	Symbol	Holder	% Owned	Shares	Filed	SEC filing
PassiveAmendment 1Below 5%	WRB	Vanguard Capital Management in W R Berkley Corp	4.44%	16,502,067	Oct 30, 2026	SEC
PassiveAmendment 14Below 5%	WRB	BlackRock, Inc. in W. R. Berkley Corporation	4.6%	17,215,830	Oct 27, 2026	SEC