WRB insider buying – Berkley W R Corp
21 insider purchases since 2016 worth $705.8M by 3 different insiders. Last 12 months: 20 purchases, $705.5M. Most recent filing: 2026-03-03.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| MS&AD Insurance Group Holdings, Inc. 10% Owner | $372.8M 11× · 5,412,247 sh | 2025-12-18 2026-02-23 | – | 57,872,210 shares as of 2026-02-25 | Holds - never sold |
| MITSUI SUMITOMO INSURANCE CO LTD 10% Owner | $332.7M 9× · 4,766,615 sh | 2025-12-23 2026-03-02 | – | 58,707,265 shares as of 2026-03-03 | Holds - never sold |
| BROCKBANK MARK ELLWOOD Director | $371,785 1× · 6,000 sh | 2022-07-29 2022-07-29 | 2× · $7.1M last 2021-12-23 | 1,297,745 shares as of 2022-08-02 | Holds (sold earlier) |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 18 | $600.9M | 2 | – | – |
| 2025 | 2 | $104.6M | 2 | – | – |
| 2022 | 1 | $371,785 | 1 | – | – |
| 2021 | 0 | – | – | 1 | $2.0M |
| 2019 | 0 | – | – | 1 | $5.1M |
| 2018 | 0 | – | – | 1 | $1.7M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2026-03-03 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 258,176 | $72.61 | $18.7M | +0.4% | SEC |
| 2026-02-27 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 300,000 | $71.65 | $21.5M | +0.5% | SEC |
| 2026-02-25 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 553,654 | $71.13 | $39.4M | +1.0% | SEC |
| 2026-02-20 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 505,582 | $70.70 | $35.7M | +0.9% | SEC |
| 2026-02-18 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 566,386 | $70.91 | $40.2M | +1.0% | SEC |
| 2026-02-13 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 40,000 | $70.93 | $2.8M | +0.1% | SEC |
| 2026-02-11 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 97,996 | $69.68 | $6.8M | +0.2% | SEC |
| 2026-02-06 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 40,000 | $70.88 | $2.8M | +0.1% | SEC |
| 2026-02-04 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 315,221 | $68.05 | $21.5M | +0.6% | SEC |
| 2026-01-30 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 485,000 | $68.22 | $33.1M | +0.9% | SEC |
| 2026-01-28 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 1,028,931 | $67.35 | $69.3M | +1.9% | SEC |
| 2026-01-23 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 698,000 | $67.19 | $46.9M | +1.3% | SEC |
| 2026-01-21 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 630,000 | $67.64 | $42.6M | +1.2% | SEC |
| 2026-01-16 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 535,000 | $68.50 | $36.6M | +1.0% | SEC |
| 2026-01-14 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 811,041 | $68.58 | $55.6M | +1.6% | SEC |
| 2026-01-09 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 470,000 | $69.45 | $32.6M | +0.9% | SEC |
| 2026-01-07 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 681,218 | $69.61 | $47.4M | +1.3% | SEC |
| 2026-01-02 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 672,734 | $70.12 | $47.2M | +1.3% | SEC |
| 2025-12-29 | MITSUI SUMITOMO INSURANCE CO LTD | 10% Owner | 879,573 | $70.53 | $62.0M | +1.8% | SEC |
| 2025-12-22 | MS&AD Insurance Group Holdings, Inc. | 10% Owner | 610,350 | $69.71 | $42.5M | +1.3% | SEC |
| 2022-08-02 | BROCKBANK MARK ELLWOOD | Director | 6,000 | $61.96 | $371,785 | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2021-12-23 | BROCKBANK MARK ELLWOOD | Director | 25,000 | $80.31 | $2.0M | Sale | SEC |
| 2019-06-21 | BROCKBANK MARK ELLWOOD | Director | 77,000 | $66.61 | $5.1M | Sale | SEC |
| 2018-06-14 | SHIEL JAMES G | Officer | 22,000 | $77.04 | $1.7M | Sale | SEC |
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
Get every new insider purchase the day it's filed
Daily report with all SEC insider buys, cluster buys, company events and the crypto money-flow radar.
Get started free