Based on data from the past 90 days ending January 10, 2026, Guidewire Software's three largest insider shareholders are Chief Executive Officer Michael George Rosenbaum (237.94K shares), President John P Mullen (141.98K shares), Chief Financial Officer Jeffrey Elliott Cooper (72.97K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Michael George Rosenbaum | Chief Executive Officer | 237,943 | 29 Dec, 2025 |
| John P Mullen | President | 141,983 | 17 Dec, 2025 |
| Jeffrey Elliott Cooper | Chief Financial Officer | 72,969 | 18 Dec, 2025 |
| Priscilla Hung | President & Coo | 38,131 | 20 Dec, 2023 |
| James Winston King | Chief Admin Officer And Gen Couns | 33,702 | 18 Dec, 2025 |
| Frank E Jr Odowd | Chief Sales Officer | 28,275 | 21 Sep, 2021 |
| Margaret Dillon | 16,393 | 16 Dec, 2025 | |
| Paul Lavin | 13,796 | 23 Dec, 2024 | |
| David Franklin Peterson | Chief Accounting Officer | 12,806 | 17 Dec, 2025 |
| Rajani Ramanathan | 11,057 | 16 Dec, 2025 | |
| Michael C Keller | 10,606 | 16 Dec, 2025 | |
| Marcus Ryu | 10,555 | 19 Dec, 2023 | |
| Michael Polelle | Chief Delivery Officer | 7,241 | 18 Mar, 2022 |
| David S Bauer | 7,099 | 16 Dec, 2025 | |
| Andrew William Fraser Brown | 4,000 | 23 Jun, 2022 | |
| Mark V Anquillare | 2,716 | 16 Dec, 2025 | |
| Jeffrey Steven Sloan | 2,371 | 16 Dec, 2025 | |
| Catherine P Lego | 2,000 | 16 Dec, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 29 Dec, 2025 | Michael George Rosenbaum | Common Stock | D | 1,400 | $204.95 | 237,943 | D | S |
| 22 Dec, 2025 | Michael George Rosenbaum | Common Stock | D | 1,400 | $200.72 | 239,343 | D | S |
| 18 Dec, 2025 | James Winston King | Common Stock | D | 1,860 | $195.00 | 33,702 | D | S |
| 18 Dec, 2025 | Jeffrey Elliott Cooper | Common Stock | D | 1,232 | $195.00 | 72,969 | D | S |
| 16 Dec, 2025 | David Franklin Peterson | Common Stock | D | 358 | $192.08 | 12,806 | D | S |
| 16 Dec, 2025 | James Winston King | Common Stock | D | 1,457 | $192.08 | 35,562 | D | S |
| 16 Dec, 2025 | Michael George Rosenbaum | Common Stock | D | 6,015 | $192.08 | 240,743 | D | S |
| 16 Dec, 2025 | Jeffrey Elliott Cooper | Common Stock | D | 2,872 | $192.08 | 74,201 | D | S |
| 16 Dec, 2025 | John P Mullen | Common Stock | D | 7,975 | $192.08 | 141,983 | D | S |
| 15 Dec, 2025 | Michael C Keller | Common Stock | A | 1,196 | $0.00 | 10,606 | D | A |
| 15 Dec, 2025 | Catherine P Lego | Common Stock | A | 1,196 | $0.00 | 2,000 | I | A |
| 15 Dec, 2025 | Mark V Anquillare | Common Stock | A | 1,196 | $0.00 | 2,716 | D | A |
| 15 Dec, 2025 | Jeffrey Steven Sloan | Common Stock | A | 1,196 | $0.00 | 2,371 | D | A |
| 15 Dec, 2025 | Michael George Rosenbaum | Common Stock | D | 1,400 | $204.34 | 246,758 | D | S |
| 15 Dec, 2025 | Margaret Dillon | Common Stock | A | 1,196 | $0.00 | 16,393 | D | A |
| 15 Dec, 2025 | Rajani Ramanathan | Common Stock | A | 1,196 | $0.00 | 11,057 | D | A |
| 15 Dec, 2025 | David S Bauer | Common Stock | A | 1,196 | $0.00 | 7,099 | D | A |
| 08 Dec, 2025 | Michael George Rosenbaum | Common Stock | D | 1,400 | $210.87 | 248,158 | D | S |
| 01 Dec, 2025 | Michael George Rosenbaum | Common Stock | D | 1,400 | $213.44 | 249,558 | D | S |
| 01 Dec, 2025 | John P Mullen | Common Stock | D | 3,000 | $213.44 | 149,958 | D | S |