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 |
|---|---|---|---|---|---|---|
| Mullen John P | President & CRO | SELL | $100K–$500K | 1K | $174.78 | Sep 20, 2024 |
| King James Winston | Chief Admin Officer | SELL | $15K–$50K | 105 | $146.97 | Aug 21, 2024 |
| King James Winston | Chief Admin Officer | EXERCISE | $1K–$15K | 105 | $45.27 | Aug 21, 2024 |
| Mullen John P | President & CRO | SELL | $100K–$500K | 1K | $149.03 | Aug 20, 2024 |
| Cooper Jeffrey Elliott | CFO | SELL | $500K+ | 5K | $134.41 | Jun 21, 2024 |
| Mullen John P | President & CRO | SELL | $500K+ | 6K | $134.46 | Jun 20, 2024 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 2K | $134.35 | Jun 20, 2024 |
| Rosenbaum Michael George | CEO | SELL | $500K+ | 6K | $134.54 | Jun 18, 2024 |
| Mullen John P | President & CRO | SELL | $100K–$500K | 1K | $111.35 | Apr 17, 2024 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 4K | $111.75 | Mar 21, 2024 |
| Mullen John P | President & CRO | SELL | $100K–$500K | 4K | $111.75 | Mar 21, 2024 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 2K | $112.15 | Mar 21, 2024 |
| Cooper Jeffrey Elliott | CFO | SELL | $50K–$100K | 458 | $112.10 | Jan 17, 2024 |
| Hung Priscilla | President & COO | SELL | $500K+ | 6K | $100.00 | Nov 30, 2023 |
| Cooper Jeffrey Elliott | CFO | SELL | $100K–$500K | 4K | $92.13 | Sep 22, 2023 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 5K | $92.14 | Sep 22, 2023 |
| Hung Priscilla | President & COO | SELL | $500K+ | 9K | $92.13 | Sep 22, 2023 |
| Mullen John P | President & CRO | SELL | $500K+ | 6K | $91.77 | Sep 20, 2023 |
| King James Winston | Chief Admin Officer | SELL | $500K+ | 6K | $91.77 | Sep 20, 2023 |
| Rosenbaum Michael George | CEO | SELL | $1M+ | 26K | $91.77 | Sep 20, 2023 |
| Cooper Jeffrey Elliott | CFO | SELL | $500K+ | 8K | $91.77 | Sep 20, 2023 |
| Hung Priscilla | President & COO | SELL | $1M+ | 12K | $91.77 | Sep 20, 2023 |
| King James Winston | Chief Admin Officer | EXERCISE | $1K–$15K | 42 | $46.77 | Sep 5, 2023 |
| King James Winston | Chief Admin Officer | SELL | $1K–$15K | 42 | $86.64 | Sep 5, 2023 |
| Cooper Jeffrey Elliott | CFO | SELL | $100K–$500K | 4K | $70.82 | Jun 21, 2023 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 3K | $70.51 | Jun 21, 2023 |
| Hung Priscilla | President & COO | SELL | $100K–$500K | 4K | $70.60 | Jun 21, 2023 |
| Rosenbaum Michael George | CEO | SELL | $500K+ | 8K | $71.13 | Jun 21, 2023 |
| Mullen John P | President & CRO | SELL | $100K–$500K | 4K | $71.13 | Jun 21, 2023 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 5K | $77.17 | Mar 21, 2023 |
| Mullen John P | President & CRO | SELL | $500K+ | 12K | $77.17 | Mar 21, 2023 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 3K | $77.00 | Mar 21, 2023 |
| Hung Priscilla | President & COO | SELL | $100K–$500K | 4K | $77.01 | Mar 21, 2023 |
| Cooper Jeffrey Elliott | CFO | SELL | $100K–$500K | 3K | $77.03 | Mar 21, 2023 |
| King James Winston | Chief Admin Officer | EXERCISE | $1K–$15K | 192 | $36.97 | Mar 1, 2023 |
| King James Winston | Chief Admin Officer | SELL | $1K–$15K | 192 | $70.36 | Mar 1, 2023 |
| Hung Priscilla | President & COO | SELL | $500K+ | 10K | $70.00 | Jan 19, 2023 |
| Cooper Jeffrey Elliott | CFO | SELL | $15K–$50K | 403 | $66.23 | Jan 10, 2023 |
| Mullen John P | President & CRO | SELL | $15K–$50K | 473 | $61.40 | Dec 20, 2022 |
| King James Winston | Chief Admin Officer | SELL | $50K–$100K | 1K | $60.00 | Dec 20, 2022 |
| Cooper Jeffrey Elliott | CFO | SELL | $100K–$500K | 3K | $61.09 | Dec 20, 2022 |
| Rosenbaum Michael George | CEO | EXERCISE | N/A | 3K | — | Dec 19, 2022 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 8K | $61.40 | Dec 19, 2022 |
| King James Winston | Chief Admin Officer | SELL | $50K–$100K | 2K | $61.40 | Dec 19, 2022 |
| King James Winston | Chief Admin Officer | EXERCISE | N/A | 191 | — | Dec 19, 2022 |
| Hung Priscilla | President & COO | SELL | $100K–$500K | 3K | $61.40 | Dec 19, 2022 |
| Hung Priscilla | President & COO | EXERCISE | N/A | 341 | — | Dec 19, 2022 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 3K | $62.10 | Sep 22, 2022 |
| Cooper Jeffrey Elliott | CFO | SELL | $100K–$500K | 2K | $62.14 | Sep 22, 2022 |
| Rosenbaum Michael George | CEO | EXERCISE | N/A | 44K | — | Sep 19, 2022 |
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