Guidewire Software CEO Michael Rosenbaum sells shares

Michael George Rosenbaum, CEO of Guidewire Software, has executed multiple stock sales throughout mid-2026. According to SEC filings, Rosenbaum sold 1,200 shares on August 17, 2026, at an average price of $172.88, totaling approximately $207,456.

Further filings indicate a subsequent sale of 1,200 shares on August 24, 2026, at an average price of $187.82, valued at $225,384. These transactions were conducted under a pre-arranged Rule 10b5-1 trading plan, designed to allow insiders to sell stock at predetermined times to avoid concerns regarding material non-public information.

Following these transactions, Rosenbaum maintains a significant equity stake in the company, holding approximately 187,776 to 188,976 shares valued at over $32 million. Guidewire Software, which provides cloud-based and on-premise software for the property and casualty insurance industry, maintains a market capitalization of approximately $15.9 billion.