BERKLEY W R CORP Insider Trading Activity
Every SEC Form 4 insider transaction reported for BERKLEY W R CORP (WRB), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are WRB insiders buying or selling?
In the last 12 months, BERKLEY W R CORP insiders reported 20 open-market purchases ($705.5M) and 0 sales ($0) — net buying of $705.5M. Since June 2018, Trabud has recorded 25 Form 4 filings for WRB: 22 buys ($705.8M) and 3 sells ($8.8M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $69.3M by MITSUI SUMITOMO INSURANCE CO LTD (10% Owner) on Jan 29, 2026. SEC ↗
- The most recent open-market purchase was reported on Mar 4, 2026 (7 months ago).
Key Statistics (June 2018 – Mar 4, 2026)
Total Form 4 filings
25
SEC EDGAR
Insider filers
4
Insider buys (22)
$705.8M
Insider sells (3)
$8.8M
Insider sentiment
Net buyingNet insider flow of $697.0M in net buying since June 2018, and $705.5M in net buying over the last 12 months.
Recent WRB insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Mar 4, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 258.2K | $72.61 | $18.7M | SEC ↗ |
| Feb 28, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 300.0K | $71.65 | $21.5M | SEC ↗ |
| Feb 26, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 553.7K | $71.13 | $39.4M | SEC ↗ |
| Feb 21, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 505.6K | $70.70 | $35.7M | SEC ↗ |
| Feb 18, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 566.4K | $70.92 | $40.2M | SEC ↗ |
| Feb 14, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 40.0K | $70.93 | $2.8M | SEC ↗ |
| Feb 12, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 98.0K | $69.68 | $6.8M | SEC ↗ |
| Feb 7, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 40.0K | $70.88 | $2.8M | SEC ↗ |
| Feb 5, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 315.2K | $68.05 | $21.5M | SEC ↗ |
| Jan 31, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 485.0K | $68.22 | $33.1M | SEC ↗ |
| Jan 29, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 1.0M | $67.35 | $69.3M | SEC ↗ |
| Jan 24, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 698.0K | $67.19 | $46.9M | SEC ↗ |
| Jan 22, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 630.0K | $67.64 | $42.6M | SEC ↗ |
| Jan 17, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 535.0K | $68.49 | $36.6M | SEC ↗ |
| Jan 15, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 811.0K | $68.58 | $55.6M | SEC ↗ |
| Jan 10, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 470.0K | $69.45 | $32.6M | SEC ↗ |
| Jan 8, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 681.2K | $69.61 | $47.4M | SEC ↗ |
| Jan 3, 2026 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 672.7K | $70.11 | $47.2M | SEC ↗ |
| Dec 30, 2025 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 879.6K | $70.53 | $62.0M | SEC ↗ |
| Dec 23, 2025 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | Purchase | 610.4K | $69.71 | $42.5M | SEC ↗ |
| Sep 14, 2022 | Jonathan Talisman | Director | Purchase | 6 | $67.60 | $405.57 | SEC ↗ |
| Aug 2, 2022 | Mark Ellwood Brockbank | Director | Purchase | 6.0K | $61.96 | $371.8K | SEC ↗ |
| Dec 23, 2021 | Mark Ellwood Brockbank | Director | Sale | 25.0K | $80.31 | $2.0M | SEC ↗ |
| Jun 21, 2019 | Mark Ellwood Brockbank | Director | Sale | 77.0K | $66.61 | $5.1M | SEC ↗ |
| Jun 14, 2018 | James G Shiel | EVP - Investments | Sale | 22.0K | $77.04 | $1.7M | SEC ↗ |
Showing the 25 most recent of 25 Form 4 filings for BERKLEY W R CORP.
Most active WRB insiders
- MITSUI SUMITOMO INSURANCE CO LTD20 filings
- Mark Ellwood Brockbank3 filings
- James G Shiel1 filing
- Jonathan Talisman1 filing
Ask anything about WRB insider activity
Use Trabud's AI agent to query BERKLEY W R CORP's Form 4 history in plain English — "Show me WRB CEO purchases this year" or compare it against any other ticker.
Open the AI agentWRB insider trading FAQ
Are BERKLEY W R CORP insiders buying or selling?
In the last 12 months, BERKLEY W R CORP insiders reported 20 open-market purchases ($705.5M) and 0 sales ($0) — net buying of $705.5M. Since June 2018, Trabud has recorded 25 Form 4 filings for WRB: 22 buys ($705.8M) and 3 sells ($8.8M). Over the full record that is net buying of $697.0M.
How many insiders trade WRB stock?
4 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for BERKLEY W R CORP. The most recent filing was accepted on Mar 4, 2026.
Where does Trabud get WRB insider trading data?
All WRB insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.