BERKLEY W R CORP (WRB) Insider Transactions
Over the last 12 months, 15 BERKLEY W R CORP (WRB) insiders filed 117 SEC Form 4 transactions — $705.5M in open-market purchases ( 1 distinct buyers) and $0 in open-market sales. 0% of all transactions were executed under a pre-scheduled Rule 10b5-1 trading plan.
- $705.5MOpen-market buys (1y)
- $0Open-market sells (1y)
- 15Distinct insiders
- 117Transactions filed
- 0%Under Rule 10b5-1 plan
- 2026-06-03Latest filing
Recent Form 4 Filings Most recent 50 of 117 (1-year window)
Each row is a single Form 4 filing event for WRB, sourced directly from SEC EDGAR. The Type column classifies the SEC transaction code into Buy / Sell / Grant / Exercise / Other; the 10b5-1 badge marks trades executed under a pre-scheduled SEC Rule 10b5-1 plan.
| Date | Insider | Title | Type | SEC Code | Value | Shares | Price |
|---|---|---|---|---|---|---|---|
| 2026-06-03 | BERKLEY WILLIAM R | Executive Chairman | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Ferre Maria Luisa | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Mattson Marie Angela | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | BERKLEY WILLIAM R JR | President and CEO | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Mosley Daniel Lynn | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Farrell Mary C | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Rusbuldt Robert Alan | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Augostini Christopher L | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | BLAYLOCK RONALD E | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-06-03 | Talisman Jonathan | — | Grant | A | $0 | 3,090 | $0.00 |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $2.8M | 38,991 | $71.60 |
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $5.3M | 73,185 | $72.52 |
| 2026-03-02 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $3.3M | 45,103 | $72.29 |
| 2026-03-02 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $7.4M | 100,897 | $73.20 |
| 2026-02-27 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $10.5M | 147,000 | $71.63 |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $10.4M | 145,491 | $71.65 |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $541.5K | 7,509 | $72.11 |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $11.0M | 154,512 | $71.39 |
| 2026-02-25 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.0M | 14,356 | $71.77 |
| 2026-02-24 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $7.3M | 103,192 | $70.52 |
| 2026-02-24 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $4.4M | 61,594 | $71.28 |
| 2026-02-23 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $14.5M | 203,590 | $71.09 |
| 2026-02-23 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.2M | 16,410 | $71.80 |
| 2026-02-20 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $11.4M | 160,582 | $70.80 |
| 2026-02-19 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $21.2M | 300,986 | $70.53 |
| 2026-02-19 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $3.1M | 44,014 | $71.50 |
| 2026-02-18 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $16.9M | 239,750 | $70.58 |
| 2026-02-18 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $3.2M | 45,250 | $70.96 |
| 2026-02-17 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $20.0M | 281,386 | $71.19 |
| 2026-02-13 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.1M | 15,406 | $69.73 |
| 2026-02-13 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $303.3K | 4,314 | $70.30 |
| 2026-02-13 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $19.9K | 280 | $71.18 |
| 2026-02-12 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.3M | 17,599 | $71.88 |
| 2026-02-12 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $174.7K | 2,401 | $72.76 |
| 2026-02-11 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $646.4K | 9,289 | $69.59 |
| 2026-02-11 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $252.3K | 3,578 | $70.50 |
| 2026-02-11 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $797.6K | 11,163 | $71.45 |
| 2026-02-10 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.5M | 21,884 | $69.09 |
| 2026-02-10 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $844.8K | 12,082 | $69.92 |
| 2026-02-09 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $2.5M | 35,952 | $69.27 |
| 2026-02-09 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $284.7K | 4,048 | $70.32 |
| 2026-02-06 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.1M | 15,694 | $70.46 |
| 2026-02-06 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $307.4K | 4,306 | $71.39 |
| 2026-02-05 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $462.1K | 6,528 | $70.79 |
| 2026-02-05 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $959.9K | 13,472 | $71.25 |
| 2026-02-04 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $180.3K | 2,585 | $69.77 |
| 2026-02-04 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $1.6M | 22,415 | $70.25 |
| 2026-02-03 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $565.5K | 8,347 | $67.75 |
| 2026-02-03 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $2.2M | 31,653 | $68.87 |
| 2026-02-02 | MITSUI SUMITOMO INSURANCE CO LTD | — | Buy | — | $16.1M | 237,062 | $67.71 |
Showing the most recent 50 of 117 transactions. For the full 1-year history with sorting, filtering, and cross-ticker industry context, open the full insider transactions drilldown.
Top Insider Buyers of WRB By dollar volume, 1-year window
- MITSUI SUMITOMO INSURANCE CO LTD $705.5M
Methodology & FAQ
How We Track WRB Insider Transactions
Form 4 disclosures are sourced directly from SEC EDGAR and re-ingested on every pipeline cycle. A complete description of transaction-code handling, the open-market vs grant distinction, and the Rule 10b5-1 plan-reference heuristic is documented in the Methodology.
What is an SEC Form 4 filing for BERKLEY W R CORP?
Form 4 is a transaction-level disclosure that corporate insiders — officers, directors, and beneficial owners of more than 10% of a registered class of equity securities — must file with the SEC within two business days of any change in their beneficial ownership of BERKLEY W R CORP (WRB) shares.
What is a Rule 10b5-1 trading plan?
Rule 10b5-1 is an SEC rule that lets insiders schedule trades in advance under a written plan, providing an affirmative defense against insider-trading allegations as long as the plan was adopted in good faith and not while in possession of material non-public information. Form 4 rows marked "10b5-1" on this page indicate the underlying trade was executed under such a plan; rows without the badge are discretionary or did not reference a plan in the Form 4 footnotes.
How is "insider buying" different from a stock grant or option exercise?
An insider buy (SEC transaction code P) is an open-market purchase of BERKLEY W R CORP (WRB) stock executed at the prevailing market price using the insider's personal capital. Stock grants (code A) and option exercises (code M) are compensation events, not directional trades; they are tracked separately and excluded from the "conviction" signal because they are not discretionary purchases.
How recent is the data?
Form 4 transactions are typically reported within two business days of execution. Pactolio re-ingests the EDGAR feed on a nightly cycle and reflects new filings on the next ingest run, typically within 24 hours of EDGAR acceptance. The table on this page covers the most recent 1-year window.