Have insiders been buying WRB stock?

BERKLEY W R CORP (WRB) insider trading from SEC Form 4 filings. 20 open-market insider purchases worth $705.5M in the last two years, most recently 2026-03-03.

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WRB insider trading

BERKLEY W R CORP — open-market insider buys and $1M+ sells from SEC Forms 3, 4 and 5.

Insider buys · 24 mo

Bought · 24 mo

$705.5M

Buys · last 90 days

0 · $0

Most recent buy

2026-03-03

Recent insider filings

Filed	Insider	Type	Shares	Price	Value
2026-03-03	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	258,176	$72.61	$18.7M
2026-02-27	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	300,000	$71.65	$21.5M
2026-02-25	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	553,654	$71.13	$39.4M
2026-02-20	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	505,582	$70.70	$35.7M
2026-02-18	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	566,386	$70.91	$40.2M
2026-02-13	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	40,000	$70.93	$2.8M
2026-02-11	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	97,996	$69.68	$6.8M
2026-02-06	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	40,000	$70.88	$2.8M
2026-02-04	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	315,221	$68.05	$21.5M
2026-01-30	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	485,000	$68.22	$33.1M
2026-01-28	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	1,028,931	$67.35	$69.3M
2026-01-23	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	698,000	$67.19	$46.9M
2026-01-21	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	630,000	$67.64	$42.6M
2026-01-16	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	535,000	$68.50	$36.6M
2026-01-14	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	811,041	$68.58	$55.6M
2026-01-09	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	470,000	$69.45	$32.6M
2026-01-07	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	681,218	$69.61	$47.4M
2026-01-02	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	672,734	$70.12	$47.2M
2025-12-29	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	879,573	$70.53	$62.0M
2025-12-22	MITSUI SUMITOMO INSURANCE CO LTD 10% owner	Bought	610,350	$69.71	$42.5M

Most active insider buyers

Insider	Role	Buys	Total bought
MITSUI SUMITOMO INSURANCE CO LTD	10% owner	20	$705.5M

See WRB on the chart

Every insider buy and sell for WRB plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.

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Data from the SEC EDGAR ownership filings, refreshed daily. Only open-market purchases (transaction code P) and sales of $1M or more are shown; grants, option exercises and tax withholding are excluded because they run on schedules set years earlier. Not investment advice.