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US INSIDER PROFILE · NON-SCORING RESEARCH
MITSUI SUMITOMO INSURANCE CO LTD
10% Owner
Identity: SEC reporting-owner CIK · Reporting-owner CIK: 0001142206
Purchase history
- Companies traded
- 1
- Purchases · 12M
- 20
- Purchases · 24M
- 20
- Average purchase
- $35.3M
- Median purchase
- $38.0M
- Gross purchase value
- $705.5M
Companies: BERKLEY W R CORP
20 SEC accession(s) · 20 joint-owner event(s). Values are reported Form 4 transaction values in USD.
Qualifying purchase disclosures
| Published | Company | Ticker | Role | Reported value | SEC source |
|---|---|---|---|---|---|
| 2026-03-03 | BERKLEY W R CORP | WRB | 10% Owner | $18.7M | Open filing |
| 2026-02-27 | BERKLEY W R CORP | WRB | 10% Owner | $21.5M | Open filing |
| 2026-02-25 | BERKLEY W R CORP | WRB | 10% Owner | $39.4M | Open filing |
| 2026-02-20 | BERKLEY W R CORP | WRB | 10% Owner | $35.7M | Open filing |
| 2026-02-18 | BERKLEY W R CORP | WRB | 10% Owner | $40.2M | Open filing |
| 2026-02-13 | BERKLEY W R CORP | WRB | 10% Owner | $2.8M | Open filing |
| 2026-02-11 | BERKLEY W R CORP | WRB | 10% Owner | $6.8M | Open filing |
| 2026-02-06 | BERKLEY W R CORP | WRB | 10% Owner | $2.8M | Open filing |
| 2026-02-04 | BERKLEY W R CORP | WRB | 10% Owner | $21.5M | Open filing |
| 2026-01-30 | BERKLEY W R CORP | WRB | 10% Owner | $33.1M | Open filing |
| 2026-01-28 | BERKLEY W R CORP | WRB | 10% Owner | $69.3M | Open filing |
| 2026-01-23 | BERKLEY W R CORP | WRB | 10% Owner | $46.9M | Open filing |
| 2026-01-21 | BERKLEY W R CORP | WRB | 10% Owner | $42.6M | Open filing |
| 2026-01-16 | BERKLEY W R CORP | WRB | 10% Owner | $36.6M | Open filing |
| 2026-01-14 | BERKLEY W R CORP | WRB | 10% Owner | $55.6M | Open filing |
| 2026-01-09 | BERKLEY W R CORP | WRB | 10% Owner | $32.6M | Open filing |
| 2026-01-07 | BERKLEY W R CORP | WRB | 10% Owner | $47.4M | Open filing |
| 2026-01-02 | BERKLEY W R CORP | WRB | 10% Owner | $47.2M | Open filing |
| 2025-12-29 | BERKLEY W R CORP | WRB | 10% Owner | $62.0M | Open filing |
| 2025-12-22 | BERKLEY W R CORP | WRB | 10% Owner | $42.5M | Open filing |
Post-purchase outcomes
Excess return = stock return − S&P 500 ETF (SPY adjusted close) return. Returns start on the first shared trading session on or after publication.
No completed point-in-time price outcome is available yet.
Research patterns
- First purchase in 12M
- 1/20
- Large purchase ≥ $100k
- 20/20
- Cluster buying · 15D
- 20/20
- Buying the dip
- 0/—
Routine / opportunistic: Not classifiable. These labels never affect the score or ranking.
Small samples remain visible but are not scored. This research enrichment never affects US-v1.1.