13D·WATCH Activist + Insider Intelligence Live feed Blog About Pilot
ISSUER PROFILE · CIK 0000011544 · CUSIP 084423102

W. R. BERKLEY CORPORATIONWRB-PH

1 13D/G filings 1 distinct filers 0 insider transactions (365d)

Cross-Reference Snapshot

Activist filings
1
1 SCHEDULE 13D/A
Distinct filers
1
single filer
Insiders (365d)
0
0 buys · 0 sales
Latest short DTC
no FINRA match

13D/G Filings Timeline · 1 total

FiledFormFilerStakeSharesIntent
2026-06-04 SCHEDULE 13D/A MITSUI SUMITOMO INSURANCE CO LTD 15.80% 58,780,450 view →

Alert me when any activist files on W. R. BERKLEY CORPORATION

Free. We email you when criteria match. One-click unsubscribe in every email.

Track every activist who touches this name.

Custom alerts · full feed · daily intelligence · API. $1,500/mo. Pilots welcome.

Request a pilot →