Rosenbaum Michael George 4

What Happened Michael Rosenbaum, CEO of Guidewire Software (GWRE), sold 1,200 shares on March 16, 2026 at $160.00 per share, generating $192,000 in proceeds. The transaction is a sale (S) and was executed automatically under a pre-established 10b5-1 trading plan.

Key Details

• Transaction date: March 16, 2026; filing date: March 17, 2026 (filed timely).
• Price and amount: 1,200 shares sold at $160.00 per share; total value $192,000.
• Transaction code: S (sale); method reported as open market (automatic under plan).
• Footnote: Sale was automatic pursuant to a 10b5-1 trading plan adopted by the reporting person on October 14, 2025 (Footnote F1).
• Shares owned after transaction: Not specified in the provided filing excerpt.

Context A sale under a 10b5-1 plan is a pre-arranged, automated trade and is generally considered routine, as it does not necessarily reflect the insider’s current view of the company. For retail investors, purchases by insiders tend to be more informative about sentiment than planned sales; this filing documents a routine, pre-planned sale rather than an opportunistic market-timed trade.