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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

New Amendments All

Stake type

Activist Passive

Min % owned

All filings, new and amended.1–4 of 4

PassiveAmendment 1Below 5%
Nov 5, 2026
SEI · Solaris Energy Infrastructure, Inc.
Voya Financial, Inc.
4.3% · 2,989,474 shSEC
PassiveNew
Oct 29, 2026
LTGO · Latigo Biotherapeutics, Inc.
Dr. Beth C. Seidenberg
19.9% · 13,199,669 shSEC
PassiveNew
Oct 29, 2026
ETRA · Electra Therapeutics, Inc.
Dr. Beth C. Seidenberg
10.1% · 6,347,539 shSEC
PassiveAmendment 12
Oct 27, 2026
SEIC · Sei Investments Company
BlackRock, Inc.
7.9% · 9,446,264 shSEC

Filing	Symbol	Holder	% Owned	Shares	Filed	SEC filing
PassiveAmendment 1Below 5%	SEI	Voya Financial, Inc. in Solaris Energy Infrastructure, Inc.	4.3%	2,989,474	Nov 5, 2026	SEC
PassiveNew	LTGO	Dr. Beth C. Seidenberg in Latigo Biotherapeutics, Inc.	19.9%	13,199,669	Oct 29, 2026	SEC
PassiveNew	ETRA	Dr. Beth C. Seidenberg in Electra Therapeutics, Inc.	10.1%	6,347,539	Oct 29, 2026	SEC
PassiveAmendment 12	SEIC	BlackRock, Inc. in Sei Investments Company	7.9%	9,446,264	Oct 27, 2026	SEC