Mitsui Sumitomo Insurance Co. Ltd., 10% Owner at BERKLEY W R CORP (WRB), bought 1,028,931 shares at $66.86 ($69.3M) on 2026-01-26, disclosed to the SEC on 2026-01-28.
Open-market purchase of $69.3M WRB by 10% Owner. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $66.86 | 293,611 | $19.6M | 28.3% |
| 2 | $67.88 | 76,389 | $5.2M | 7.5% |
| 3 | $65.86 | 800 | $53K | 0.1% |
| 4 | $66.87 | 11,987 | $802K | 1.2% |
| 5 | $67.40 | 325,960 | $22.0M | 31.7% |
| 6 | $68.56 | 8,582 |
| $588K |
| 0.8% |
| 7 | $69.04 | 2,671 | $184K | 0.3% |
| 8 | $67.58 | 280,354 | $18.9M | 27.3% |
| 9 | $67.89 | 28,577 | $1.9M | 2.8% |
| Total | $67.35 avg | 1,028,931 | $69.3M | 100% |
| Filing → |
| WRB | BUY | 2026-02-25 | $39.4M | — | Filing → |
| WRB | BUY | 2026-02-18 | $80.3M | — | Filing → |
| WRB | BUY | 2026-02-13 | $2.8M | — | Filing → |