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TrustFinance Global Insights
Feb 05, 2026
2 min read
9

Recent filings reveal significant insider trading activity, highlighting substantial buys at Berkley W R Corp and Streamex Corp, contrasted by major sells from executives at several technology firms including Fortinet and TransDigm Group.
Mitsui Sumitomo Insurance Co., a ten percent owner of Berkley W R Corp (NYSE:WRB), executed a significant purchase of shares valued at $21.4 million. In another key transaction, ten percent owner Frank Giustra acquired 100,000 shares of Streamex Corp for $317,000. These buys often signal strong confidence from major stakeholders in the companies' future prospects.
On the selling side, Fortinet's President and CEO, Xie Ken, sold shares totaling $14.3 million. Similarly, a director at TransDigm Group Inc sold shares worth $15.89 million. Substantial sells were also reported by executives at Micron Technology and Western Digital Corp, which investors will monitor closely.
Insider buys can indicate positive sentiment, while large sells may occur for various reasons, including portfolio diversification. Investors typically view this data as one of several indicators for assessing a stock's potential, alongside fundamental analysis and market conditions.
Q: Which company saw the largest insider buy mentioned?
A: Berkley W R Corp (WRB) saw the largest reported buy, with transactions from a ten percent owner totaling $21.4 million.
Q: Why do investors monitor insider trading?
A: It provides valuable insights into how executives and major shareholders view their company’s financial health and future prospects.
Source: Investing.com

TrustFinance Global Insights
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