GWRE: Guidewire Software Inc insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 6 sales totaling $3.30M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-20 | Mullen John P | President | $999K | yes |
| 2026-10-19 | Rosenbaum Michael George | CEO | $201K | yes |
| 2026-10-12 | Rosenbaum Michael George | CEO | $203K | yes |
| 2026-10-09 | King James Winston | Officer | $1.54M | yes |
| 2026-10-05 | Rosenbaum Michael George | CEO | $183K | yes |
| 2026-09-28 | Rosenbaum Michael George | CEO | $171K | yes |
Institutional ownership (Q2 2026)
549 institutions reported holding $10.12B of Guidewire Software Inc on Form 13F (599 the quarter before). 80 opened a new position and 128 sold out. Shares held by institutions: -1%.
| Largest holders | Shares | Value |
|---|---|---|
| BAMCO INC /NY/ | 8,994,456 | $1.11B |
| BlackRock, Inc. | 8,909,665 | $1.10B |
| Linonia Partnership LP | 6,933,483 | $853.17M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 4,507,288 | $554.62M |
| VANGUARD CAPITAL MANAGEMENT LLC | 3,845,465 | $473.18M |
| Darsana Capital Partners LP | 3,804,000 | $468.08M |
| STATE STREET CORP | 2,681,587 | $329.96M |
| JPMORGAN CHASE & CO | 2,249,339 | $272.33M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 2,028,908 | $249.65M |
| Route One Investment Company, L.P. | 1,849,364 | $227.56M |
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