Guidewire Software, Inc.
Total Trades
183
Buys
2
Sells
155
Largest Trade
N/A
Insiders
11
Institutional Funds
568
Inst. Value
$1M+
Activist Filings
20
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $143.87 | Mar 3, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $125.50 | Feb 23, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $127.77 | Feb 10, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $140.01 | Feb 3, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $160.32 | Jan 27, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $156.26 | Jan 22, 2026 |
| Cooper Jeffrey Elliott | CFO | SELL | $15K–$50K | 216 | $180.87 | Jan 15, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $180.87 | Jan 15, 2026 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $204.95 | Dec 30, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $200.72 | Dec 22, 2025 |
| King James Winston | Chief Admin Officer | SELL | $500K+ | 3K | $193.72 | Dec 18, 2025 |
| Cooper Jeffrey Elliott | CFO | SELL | $500K+ | 4K | $192.95 | Dec 18, 2025 |
| Rosenbaum Michael George | CEO | SELL | $1M+ | 6K | $192.08 | Dec 17, 2025 |
| Peterson David Franklin | Chief Accounting O… | SELL | $50K–$100K | 358 | $192.08 | Dec 17, 2025 |
| Mullen John P | President | SELL | $1M+ | 8K | $192.08 | Dec 17, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $204.34 | Dec 15, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $210.87 | Dec 8, 2025 |
| Mullen John P | President | SELL | $500K+ | 3K | $213.44 | Dec 1, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $213.44 | Dec 1, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $213.23 | Nov 24, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $222.54 | Nov 17, 2025 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 798 | $222.54 | Nov 17, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $218.53 | Nov 10, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $231.85 | Nov 4, 2025 |
| Mullen John P | President | SELL | $500K+ | 3K | $231.85 | Nov 4, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $255.40 | Oct 27, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $245.70 | Oct 21, 2025 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 798 | $245.70 | Oct 21, 2025 |
| Mullen John P | President | SELL | $500K+ | 3K | $230.73 | Oct 1, 2025 |
| Bauer David S | Director | SELL | $100K–$500K | 500 | $230.73 | Oct 1, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $232.25 | Sep 29, 2025 |
| Cooper Jeffrey Elliott | CFO | SELL | $1M+ | 8K | $248.76 | Sep 22, 2025 |
| King James Winston | Chief Admin Officer | SELL | $1M+ | 7K | $248.82 | Sep 22, 2025 |
| Peterson David Franklin | Chief Accounting O… | SELL | $100K–$500K | 1K | $249.86 | Sep 22, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $244.55 | Sep 22, 2025 |
| King James Winston | Chief Admin Officer | SELL | $1M+ | 7K | $242.87 | Sep 17, 2025 |
| King James Winston | Chief Admin Officer | EXERCISE | N/A | 11K | — | Sep 17, 2025 |
| Peterson David Franklin | Chief Accounting O… | EXERCISE | N/A | 3K | — | Sep 17, 2025 |
| Peterson David Franklin | Chief Accounting O… | SELL | $100K–$500K | 2K | $242.87 | Sep 17, 2025 |
| Mullen John P | President | SELL | $1M+ | 16K | $242.87 | Sep 17, 2025 |
| Mullen John P | President | EXERCISE | N/A | 19K | — | Sep 17, 2025 |
| Cooper Jeffrey Elliott | CFO | EXERCISE | N/A | 21K | — | Sep 17, 2025 |
| Cooper Jeffrey Elliott | CFO | SELL | $1M+ | 14K | $242.87 | Sep 17, 2025 |
| Rosenbaum Michael George | CEO | EXERCISE | N/A | 46K | — | Sep 17, 2025 |
| Rosenbaum Michael George | CEO | SELL | $1M+ | 30K | $242.87 | Sep 17, 2025 |
| Rosenbaum Michael George | CEO | GRANT | N/A | 29K | — | Sep 15, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $252.83 | Sep 15, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $261.28 | Sep 9, 2025 |
| Mullen John P | President | SELL | $500K+ | 3K | $214.30 | Sep 3, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $214.30 | Sep 3, 2025 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 568 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| Linonia Partnership LP | 5.4M | $1M+ | SH |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 3.4M | $1M+ | SH |
| STATE STREET CORP | 2.6M | $1M+ | SH |
| Route One Investment Company, L.P. | 1.7M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $1M+ | SH |
| Capital World Investors | 1.0M | $1M+ | SH |
| BROWN BROTHERS HARRIMAN & CO | 732K | $1M+ | SH |
| WASATCH ADVISORS LP | 622K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 566K | $1M+ | SH |
| Sculptor Capital LP | 510K | $1M+ | SH |
| Stephens Investment Management Group LLC | 510K | $1M+ | SH |
| LORD, ABBETT & CO. LLC | 458K | $1M+ | SH |
| DF DENT & CO INC | 453K | $1M+ | SH |
| ALLIANCEBERNSTEIN L.P. | 448K | $1M+ | SH |
| 1832 Asset Management L.P. | 432K | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 421K | $1M+ | SH |
| RGM Capital, LLC | 368K | $1M+ | SH |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 358K | $1M+ | SH |
| Rathbones Group PLC | 344K | $1M+ | SH |
| Rathbones Group PLC | 344K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Feb 17, 2026
6.3%
5.4M shares
SC 13G · Sep 29, 2025
5.0%
4.2M shares
SC 13G/A · Jul 2, 2025
10.2%
8.6M shares
SC 13G/A · Apr 17, 2025
9.8%
8.2M shares
Massachusetts Financial Services Company
SC 13G · Feb 13, 2025
5.3%
4.4M shares
SC 13G/A · Nov 14, 2024
6.6%
5.5M shares
SC 13G/A · Nov 12, 2024
7.1%
5.9M shares
SC 13G/A · Oct 22, 2024
7.1%
5.9M shares
The Vanguard Group - 23-1945930
SC 13G/A · Jul 10, 2024
10.1%
8.3M shares
SC 13G/A · Feb 14, 2024
7.1%
5.8M shares
Berkshire Partners Holdings LLC
SC 13G/A · Feb 14, 2024
3.9%
3.2M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
9.8%
8.1M shares
SC 13G/A · Jan 31, 2024
5.3%
4.4M shares
Principal Global Investors, LLC
SC 13G/A · Feb 14, 2023
0.8%
659K shares
SC 13G/A · Feb 14, 2023
6.7%
5.5M shares
Berkshire Partners Holdings LLC
SC 13G/A · Feb 14, 2023
5.8%
4.7M shares
SC 13G/A · Feb 1, 2023
5.2%
4.2M shares
Principal Global Investors, LLC
SC 13G · Feb 15, 2022
5.9%
4.9M shares
SC 13G/A · Feb 14, 2022
6.7%
5.6M shares
Berkshire Partners Holdings LLC
SC 13G/A · Feb 12, 2022
5.7%
4.7M shares