16 insiders reported 211 Form 4 transactions for BERKLEY W R CORP (WRB) over the past 18 months (most recent 2026-03-03). Recent activity: MITSUI SUMITOMO INSURANCE CO LTD (Insider) Buy 45,103 shares, MS&AD Insurance Group Holdings, Inc. (Insider) Buy 45,103 shares, MITSUI SUMITOMO INSURANCE CO LTD (Insider) Buy 100,897 shares, MS&AD Insurance Group Holdings, Inc. (Insider) Buy 100,897 shares, MITSUI SUMITOMO INSURANCE CO LTD (Insider) Buy 38,991 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 45,103 | $3.3M |
| 2026-03-03 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 45,103 | $3.3M |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 100,897 | $7.4M |
| 2026-03-03 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 100,897 | $7.4M |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 38,991 | $2.8M |
| 2026-03-03 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 38,991 | $2.8M |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 73,185 | $5.3M |
| 2026-03-03 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 73,185 | $5.3M |
| 2026-02-27 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 147,000 | $10.5M |
| 2026-02-27 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 145,491 | $10.4M |
| 2026-02-27 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 7,509 | $541,474 |
| 2026-02-27 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 7,509 | $541,474 |
| 2026-02-27 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 145,491 | $10.4M |
| 2026-02-27 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 147,000 | $10.5M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 203,590 | $14.5M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 203,590 | $14.5M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 16,410 | $1.2M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 16,410 | $1.2M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 103,192 | $7.3M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 103,192 | $7.3M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 61,594 | $4.4M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 61,594 | $4.4M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 154,512 | $11.0M |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | Insider | Buy | 154,512 | $11.0M |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | Insider | Buy | 14,356 | $1.0M |
Source: SEC Form 4 filings · as of 2026-03-03