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Mitsui Sumitomo Insurance Co LTD insider trades
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Mitsui Sumitomo Insurance Co LTD insider trades

Mitsui Sumitomo Insurance Co LTD has filed 9 Form 4s with the SEC that we hold, all for Berkley W R Corp (WRB), as 10% owner. Across all of them we count 42 purchases worth $332.7M and 0 sales worth $0 reported on Form 4. In the last 12 months: 42 purchases ($332.7M) and 0 sales ($0). The largest single trade was a purchase of 281,386 shares of Berkley W R Corp worth $20.0M, dated 2026-02-17. The first filing on our record is dated 2025-12-29 and the latest 2026-03-03.

Berkley W R Corp (WRB)

10% owner · 9 filings · 42 purchases and sales
Trade dateCodeSharesValue as filedFiled
2025-12-23P, purchase reported on Form 4232,546$16.4M2025-12-29
2025-12-23P, purchase reported on Form 42,027$144.2K2025-12-29
2025-12-24P, purchase reported on Form 4220,000$15.5M2025-12-29
2025-12-26P, purchase reported on Form 4220,000$15.5M2025-12-29
2025-12-29P, purchase reported on Form 4205,000$14.5M2025-12-29
2026-01-05P, purchase reported on Form 4153,686$10.9M2026-01-07
2026-01-05P, purchase reported on Form 435,894$2.5M2026-01-07
2026-01-05P, purchase reported on Form 411,350$785.4K2026-01-07
2026-01-06P, purchase reported on Form 4122,931$8.6M2026-01-07
2026-01-06P, purchase reported on Form 492,357$6.5M2026-01-07
2026-01-07P, purchase reported on Form 410,378$718.2K2026-01-07
2026-01-07P, purchase reported on Form 4254,622$17.4M2026-01-07
2026-01-08P, purchase reported on Form 44,187$288.0K2026-01-09
2026-01-08P, purchase reported on Form 439,302$2.7M2026-01-09
2026-01-08P, purchase reported on Form 4151,511$10.7M2026-01-09
2026-01-09P, purchase reported on Form 48,150$571.5K2026-01-09
2026-01-09P, purchase reported on Form 4161,176$11.0M2026-01-09
2026-01-09P, purchase reported on Form 4105,674$7.4M2026-01-09
2026-01-12P, purchase reported on Form 4256,041$17.6M2026-01-14
2026-01-13P, purchase reported on Form 4118,501$8.0M2026-01-14
2026-01-13P, purchase reported on Form 4206,499$14.1M2026-01-14
2026-01-14P, purchase reported on Form 4208,272$14.4M2026-01-14
2026-01-14P, purchase reported on Form 421,728$1.5M2026-01-14
2026-01-29P, purchase reported on Form 427,718$1.9M2026-01-30
2026-01-29P, purchase reported on Form 4262,282$17.9M2026-01-30
2026-01-30P, purchase reported on Form 4195,000$13.3M2026-01-30
2026-02-02P, purchase reported on Form 4237,062$16.1M2026-02-04
2026-02-02P, purchase reported on Form 413,159$900.3K2026-02-04
2026-02-03P, purchase reported on Form 431,653$2.2M2026-02-04
2026-02-03P, purchase reported on Form 48,347$565.5K2026-02-04
2026-02-04P, purchase reported on Form 42,585$180.4K2026-02-04
2026-02-04P, purchase reported on Form 422,415$1.6M2026-02-04
2026-02-17P, purchase reported on Form 4281,386$20.0M2026-02-18
2026-02-18P, purchase reported on Form 4239,750$16.9M2026-02-18
2026-02-18P, purchase reported on Form 445,250$3.2M2026-02-18
2026-02-26P, purchase reported on Form 4145,491$10.4M2026-02-27
2026-02-26P, purchase reported on Form 47,509$541.5K2026-02-27
2026-02-27P, purchase reported on Form 4147,000$10.5M2026-02-27
2026-03-02P, purchase reported on Form 4100,897$7.4M2026-03-03
2026-03-02P, purchase reported on Form 445,103$3.3M2026-03-03
2026-03-03P, purchase reported on Form 473,185$5.3M2026-03-03
2026-03-03P, purchase reported on Form 438,991$2.8M2026-03-03
Source

Counted from the Form 4 filings this reporting owner (SEC CIK 1142206) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

Source: U.S. Securities and Exchange Commission (EDGAR) and other official government data · Updated 2026-10-12 · For informational purposes only, not investment advice.
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