What this is
Single filing record
This page shows the rows from one Form 4 filing as reported to the SEC.
Blue Collar Picks
Big buy
$14.5M open-market purchase by Mitsui Sumitomo Insurance Co Ltd, 10% Owner at Berkley W R Corp, filed February 26, 2026. Learn more
What this is
This page shows the rows from one Form 4 filing as reported to the SEC.
Why it matters
The original SEC document is the source record. Always verify before drawing conclusions.
How to read it
Insider activity carries more weight from senior officers, large dollar values, and clustered timing.
Stacked feeds
Mitsui Sumitomo Insurance Co Ltd · 10% Owner at Berkley W R Corp
Mitsui Sumitomo Insurance Co Ltd bought $14.5M of WRB (Berkley W R Corp).
Insider purchase
Mitsui Sumitomo Insurance Co Ltd (10% Owner) bought 203,590 shares of WRB, Berkley W R Corp, Financial Services ($25.53B market cap), at $71.0931 per share on February 23, 2026 for a total of $14.5M (0.06% of the market cap).
Mitsui Sumitomo Insurance Co Ltd
10% Owner
Permalink https://bluecollarpicks.com/insider-trading/WRB/buy/2074040
Market context
Last enriched June 7, 2026 at 5:46 AM EDT.
Filings
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Public Form 4 filings, normalized for cleaner scanning. What do these codes mean?
| Ticker | Type & Role | Value | |
|---|---|---|---|
Grant Director | $0 | ||
| $3.3M | |||
Big Buy 10% Owner | $10.4M | ||
| This filing | Big Buy 10% Owner | $14.5M | |
Big Buy 10% Owner | $21.2M | ||
Cluster Buy 10% Owner | $20M | ||
| $19.9K | |||
| $19.9K | |||
Cluster Buy 10% Owner | $1.3M | ||
Cluster Buy 10% Owner | $2.5M | ||
Buy 10% Owner | $462.1K | ||
| $16.1M | |||
| $17.9M | |||
| $52.7K | |||
| $52.7K | |||
| $19.6M | |||
| $22.3M | |||
| $18M | |||
Big Buy 10% Owner | $11.5M | ||
| $17.6M | |||
| $288K | |||
| $785.4K | |||
Big Buy 10% Owner | $14.5M | ||
Big Buy 10% Owner | $16.4M | ||
Big Buy 10% Owner | $14.2M | ||
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Method Public Form 4 filings, normalized for cleaner scanning. Filtered rows stay available in All Form 4 Filings and ticker history. Which view should I use? →
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