| Name | Role | Date | Shares | Price | Value |
|---|---|---|---|---|---|
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-29 | 205,000 | $70.77 | $14.51MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-26 | 220,000 | $70.56 | $15.52MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-24 | 220,000 | $70.51 | $15.51MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-23 | 2,027 | $71.15 | $144.23kBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-23 | 232,546 | $70.31 | $16.35MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-22 | 39,940 | $69.97 | $2.79MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-22 | 162,060 | $70.33 | $11.40MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-19 | 204,000 | $69.50 | $14.18MBuy |
| Mitsui Sumitomo Insurance Co Ltd | 10% Owner | 2025-12-18 | 204,350 | $69.38 | $14.18MBuy |
| Philip S. Welt | EVP Secretary | 2025-08-15 | 678 | $71.24 | $48.30kSell |
| Name | Hold | Shares | Value | Type |
|---|---|---|---|---|
| William R. Berkley | 40.12% | 152,468,631 | $10.79B | Insider |
| William R. Berkley Jr. | 36.85% | 140,040,836 | $9.91B | Insider |
| Mitsui Sumitomo Insurance Co Ltd | 13.18% | 50,091,511 | $3.55B | Insider |
| Vanguard Group Inc | 9.66% | 36,723,753 | $2.60B | Institution |
| Blackrock Inc | 6.52% | 24,774,770 | $1.75B | Institution |
| State Street Corp | 3.93% | 14,921,114 | $1.06B | Institution |
| Morgan Stanley | 3.11% | 11,804,567 | $835.76M | Institution |
| Kayne Anderson Rudnick Investment Management LLC | 2.50% | 9,494,438 | $672.21M | Institution |
| Jefferies Financial Group Inc | 2.35% | 8,911,719 | $630.95M | Institution |
| Geode Capital Management LLC | 2.20% | 8,344,255 | $590.77M | Institution |