WRB
BERKLEY W R CORP · Finance & Insurance · Market cap $26.0B
Insider Buying
$705.5M
reported purchases (SEC code P)
Insider Selling
$0
reported sales (SEC code S)
Unique Insiders
1
in the rolling window
Latest filing
Aug 5, 2026
MITSUI SUMITOMO INSURANCE CO LTD
BERKLEY W R CORP (WRB) has 35 SEC Form 4 filings (113 transaction rows) in the rolling window, disclosed by 1 distinct insider. Most recent filing: Aug 5, 2026.
Inside the rolling window, 1 insider at BERKLEY W R CORP reported 50 open-market purchases totaling $705.5M and no open-market sales. The most active filer is 10% Owner MITSUI SUMITOMO INSURANCE CO LTD with 50 filings. Insiders have net bought $165.2M over the trailing 6 months. The largest single insider purchase in this window was $24.4M by 10% Owner MITSUI SUMITOMO INSURANCE CO LTD on Feb 19, 2026. The most recent open-market filing is a purchase of 146,000 shares by 10% Owner MITSUI SUMITOMO INSURANCE CO LTD, dated Mar 2, 2026, worth $10.6M.
- Industry:Insurance - Property & Casualty
- CEO:William Robert Berkley Jr.
- Employees:8,804
- HQ:Greenwich, CT, US
- IPO:1973-10-23
| Source | |||||||
|---|---|---|---|---|---|---|---|
| 10% Owner | Purchase | 146,000 | $10.6M | Mar 3 | -3.7% | SEC ↗ | |
| 10% Owner | Purchase | 112,176 | $8.1M | Mar 3 | -3.7% | SEC ↗ | |
| 10% Owner | Purchase | 153,000 | $11.0M | Feb 27 | -2.4% | SEC ↗ | |
| 10% Owner | Purchase | 147,000 | $10.5M | Feb 27 | -2.4% | SEC ↗ | |
| 10% Owner | Purchase | 220,000 | $15.7M | Feb 25 | -2.3% | SEC ↗ | |
| 10% Owner | Purchase | 164,786 | $11.7M | Feb 25 | -2.3% | SEC ↗ | |
| 10% Owner | Purchase | 168,868 | $12.1M | Feb 25 | — | SEC ↗ | |
| 10% Owner | Purchase | 345,000 | $24.4M | Feb 20 | — | SEC ↗ | |
| 10% Owner | Purchase | 160,582 | $11.4M | Feb 20 | — | SEC ↗ | |
| 10% Owner | Purchase | 281,386 | $20.0M | Feb 18 | — | SEC ↗ | |
| 10% Owner | Purchase | 285,000 | $20.1M | Feb 18 | — | SEC ↗ | |
| 10% Owner | Purchase | 20,000 | $1.4M | Feb 13 | — | SEC ↗ | |
| 10% Owner | Purchase | 20,000 | $1.4M | Feb 13 | — | SEC ↗ | |
| 10% Owner | Purchase | 40,000 | $2.8M | Feb 11 | — | SEC ↗ | |
| 10% Owner | Purchase | 33,966 | $2.4M | Feb 11 | — | SEC ↗ | |
| 10% Owner | Purchase | 24,030 | $1.7M | Feb 11 | — | SEC ↗ | |
| 10% Owner | Purchase | 20,000 | $1.4M | Feb 6 | — | SEC ↗ | |
| 10% Owner | Purchase | 20,000 | $1.4M | Feb 6 | — | SEC ↗ | |
| 10% Owner | Purchase | 250,221 | $17.0M | Feb 4 | — | SEC ↗ | |
| 10% Owner | Purchase | 40,000 | $2.7M | Feb 4 | — | SEC ↗ | |
| 10% Owner | Purchase | 25,000 | $1.8M | Feb 4 | — | SEC ↗ | |
| 10% Owner | Purchase | 290,000 | $19.8M | Jan 30 | — | SEC ↗ | |
| 10% Owner | Purchase | 195,000 | $13.3M | Jan 30 | — | SEC ↗ | |
| 10% Owner | Purchase | 370,000 | $24.8M | Jan 28 | — | SEC ↗ | |
| 10% Owner | Purchase | 350,000 | $23.6M | Jan 28 | — | SEC ↗ |
Congress trading WRB 35 all-time
- DRep. Ro KhannaPurchase$1,001 - $15,0002026-06-02
- DRep. Gilbert CisnerosSale$1,001 - $15,0002026-06-05
- DRep. Gilbert Ray CisnerosSale$1,001 - $15,0002026-06-05
- DRep. Gilbert CisnerosSale$1,001 - $15,0002026-05-29
- DRep. Gilbert CisnerosSale$1,001 - $15,0002026-05-19
- DRep. Gilbert CisnerosSale$1,001 - $15,0002026-05-07
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does WRB have?
BERKLEY W R CORP (WRB) has 35 SEC Form 4 filings (113 transaction rows) in the rolling 365-day window, disclosed by 1 distinct insider. Most recent filing: Aug 5, 2026.
When was the most recent SEC Form 4 filing for WRB?
The most recent Form 4 filing for WRB on Tracefour is dated Aug 5, 2026.
Who is the most active insider at WRB?
The most active SEC Form 4 filer at WRB in the rolling window is 10% Owner MITSUI SUMITOMO INSURANCE CO LTD, with 50 filings.
What is the net insider flow at WRB over the last 6 months?
Over the trailing 180 days, insiders at WRB have net bought $165.2M based on SEC Form 4 disclosures.
What was the largest insider purchase at WRB?
The largest single insider open-market purchase at WRB in the rolling window was $24.4M by 10% Owner MITSUI SUMITOMO INSURANCE CO LTD on 2026-02-19.
What is the total insider buy and sell value at WRB in the current window?
Inside the rolling window, insiders at WRB bought $705.5M and sold $0 based on SEC Form 4 filings.
Can I get alerts for WRB insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at BERKLEY W R CORP (WRB). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
BERKLEY W R CORP is in the Finance & Insurance sector.