WRB Insider Buying — Recent SEC Form 4 Activity
Track insider buying activity for BERKLEY W R CORP ($WRB). See every SEC Form 4 purchase by CEOs, CFOs, directors, and 10% owners over the last 90 days — sourced directly from EDGAR.
In the past 90 days, 1 insider at BERKLEY W R CORP (WRB) made open-market purchases totaling $56,691,289.29. The most recent transaction was on 2026-03-04.
Recent Insider Purchases at BERKLEY W R CORP
| Date | Insider | Shares | Value |
|---|---|---|---|
| 2026-03-04 | MITSUI SUMITOMO INSURANCE CO LTD | 38,991 | $2,791,599.64 |
| 2026-03-04 | MITSUI SUMITOMO INSURANCE CO LTD | 73,185 | $5,307,668.94 |
| 2026-03-04 | MITSUI SUMITOMO INSURANCE CO LTD | 45,103 | $3,260,270.36 |
| 2026-03-04 | MITSUI SUMITOMO INSURANCE CO LTD | 100,897 | $7,385,458.61 |
| 2026-02-28 | MITSUI SUMITOMO INSURANCE CO LTD | 147,000 | $10,529,022.00 |
| 2026-02-28 | MITSUI SUMITOMO INSURANCE CO LTD | 7,509 | $541,504.03 |
| 2026-02-28 | MITSUI SUMITOMO INSURANCE CO LTD | 145,491 | $10,423,848.19 |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | 14,356 | $1,030,330.12 |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | 154,512 | $11,030,920.70 |
| 2026-02-26 | MITSUI SUMITOMO INSURANCE CO LTD | 61,594 | $4,390,666.70 |
Top Insiders Buying WRB
- $56,691,289.2910 purchases
Frequently Asked — WRB Insider Buying
What is WRB insider buying?
$WRB insider buying refers to open-market purchases of BERKLEY W R CORP stock by corporate insiders — officers, directors, and shareholders owning more than 10% of the company. Every purchase is disclosed to the SEC on Form 4 within two business days and is shown on this page.
Why does WRB insider activity matter?
Insiders have the best view into BERKLEY W R CORP's operations. When they buy their own stock with personal money — rather than selling option grants — it signals conviction. Clusters of insider buying (two or more insiders purchasing within 14 days) have historically preceded above-market returns.
Where does this WRB insider data come from?
Every transaction on this page is sourced directly from SEC EDGAR Form 4 filings. InsiderAct ingests these filings in near real time and filters for open-market purchases (transaction code P).
How do I get alerts when WRB insiders buy?
Add $WRB to your InsiderAct watchlist and enable email alerts. You'll be notified when a new Form 4 purchase is filed — usually within hours of the transaction.
What is a "cluster buy" signal?
InsiderAct flags a cluster buy when two or more independent insiders at the same company buy on the open market within a 14-day window. Cluster buys are the highest-conviction insider signal we track.
Related Insider Activity
Other stocks with recent insider buying on SEC Form 4
Want alerts when WRB insiders buy?
Add $WRB to your watchlist and get notified the moment a new Form 4 is filed.
Data sourced from SEC Form 4 filings via EDGAR. Read more: What is SEC Form 4?