InsiderTrades

MITSUI SUMITOMO INSURANCE CO LTD

SEC CIK 1142206 · EDGAR

Buying vs selling by month open-market trades, last 24 months, WRB
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
WRBW. R. Berkley Corporation10% 58.71M $332.66M — 92025-12-232026-03-02

Most active insiders at WRB, 12 months

#InsiderTitleBoughtSold
1 MS&AD Insurance Group Holdings, Inc.10% $372.80M—
2 MITSUI SUMITOMO INSURANCE CO LTD10% $332.66M—
3 Rusbuldt Robert AlanDir ——
4 Mattson Marie AngelaDir ——
5 Mosley Daniel LynnDir ——
6 Talisman JonathanDir ——
7 Welt Philip SEVP, Sec ——
8 Augostini Christopher LDir ——
9 Baio Richard MarkEVP, CFO ——
10 Farrell Mary CDir ——

Transactions 9

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
MT 2026-03-03 2026-03-02+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $72.61 +258.2K 58.71M +0.4% +$18.75M
MT 2026-02-27 2026-02-26+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $71.65 +300.0K 58.52M +0.5% +$21.50M
MT 2026-02-18 2026-02-17+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $70.91 +566.4K 57.16M +1% +$40.16M
MT 2026-02-04 2026-02-02+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $68.05 +315.2K 56.35M +0.6% +$21.45M
MT 2026-01-30 2026-01-29+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $68.22 +485.0K 55.88M +0.9% +$33.09M
MT 2026-01-14 2026-01-12+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $68.58 +811.0K 52.50M +2% +$55.62M
MT 2026-01-09 2026-01-08+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $69.45 +470.0K 51.64M +0.9% +$32.64M
MT 2026-01-07 2026-01-05+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $69.61 +681.2K 51.18M +1% +$47.42M
MT 2025-12-29 2025-12-23+ WRB W. R. Berkley Corporation MITSUI SUMITOMO INSURANCE CO LTD 10% P - Purchase $70.53 +879.6K 49.89M +2% +$62.04M

Purchase Sale Sale after option exercise All abbreviations