W. R. BERKLEY CORPORATIONWRB-PH

2 13D/G filings 2 distinct filers 0 insider transactions (365d)

Post-Filing Returns · across 1 activist filings on this issuer

Median 30d

0.0%

avg 0.0%

Median 60d

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avg —

Median 90d

—

avg —

Median 180d

—

avg —

Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.

Activist filings

2 SCHEDULE 13D/A

Distinct filers

multi-activist cluster

Insiders (365d)

0 buys · 0 sales

Latest short DTC

—

no FINRA match

Filed	Form	Filer	Stake	Shares	Intent
2026-07-21	SCHEDULE 13D/A	BERKLEY WILLIAM R JR	—	95,557,324		view →
2026-06-04	SCHEDULE 13D/A	MITSUI SUMITOMO INSURANCE CO LTD	15.80%	58,780,450		view →

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