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 | $214.70 | Aug 25, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $223.75 | Jul 28, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $222.31 | Jul 21, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $220.65 | Jul 15, 2025 |
| King James Winston | Chief Admin Officer | SELL | $500K+ | 2K | $220.65 | Jul 15, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $230.70 | Jul 8, 2025 |
| Mullen John P | President | SELL | $500K+ | 3K | $235.05 | Jul 2, 2025 |
| Bauer David S | Director | SELL | $100K–$500K | 500 | $235.05 | Jul 2, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $236.89 | Jun 30, 2025 |
| KELLER MICHAEL C | Director | SELL | $100K–$500K | 2K | $238.26 | Jun 25, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $238.12 | Jun 24, 2025 |
| Rosenbaum Michael George | CEO | SELL | $1M+ | 7K | $250.01 | Jun 18, 2025 |
| King James Winston | Chief Admin Officer | SELL | $100K–$500K | 1K | $248.94 | Jun 18, 2025 |
| Mullen John P | President | SELL | $1M+ | 7K | $248.94 | Jun 18, 2025 |
| Cooper Jeffrey Elliott | CFO | SELL | $1M+ | 4K | $249.12 | Jun 18, 2025 |
| KELLER MICHAEL C | Director | SELL | $100K–$500K | 860 | $254.53 | Jun 18, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $256.50 | Jun 9, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $215.35 | Jun 3, 2025 |
| Mullen John P | President | SELL | $500K+ | 3K | $215.35 | Jun 3, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $212.02 | May 27, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $215.25 | May 20, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $216.51 | May 14, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $208.36 | May 7, 2025 |
| Mullen John P | President | SELL | $500K+ | 4K | $208.32 | May 5, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $198.22 | Apr 30, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $189.44 | Apr 23, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $194.90 | Apr 14, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $167.82 | Apr 7, 2025 |
| Bauer David S | Director | SELL | $50K–$100K | 500 | $187.95 | Apr 3, 2025 |
| Mullen John P | President | SELL | $100K–$500K | 2K | $187.95 | Apr 3, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $184.41 | Mar 31, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $195.15 | Mar 25, 2025 |
| Cooper Jeffrey Elliott | CFO | SELL | $500K+ | 4K | $191.37 | Mar 20, 2025 |
| King James Winston | Chief Admin Officer | SELL | $500K+ | 5K | $192.34 | Mar 19, 2025 |
| Mullen John P | President | SELL | $1M+ | 6K | $189.41 | Mar 19, 2025 |
| Rosenbaum Michael George | CEO | SELL | $1M+ | 6K | $188.44 | Mar 19, 2025 |
| KELLER MICHAEL C | Director | SELL | $100K–$500K | 2K | $185.03 | Mar 19, 2025 |
| Bauer David S | Director | SELL | $50K–$100K | 500 | $175.00 | Mar 14, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $203.65 | Feb 25, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $201.90 | Jan 28, 2025 |
| Mullen John P | President | SELL | $100K–$500K | 700 | $210.00 | Jan 24, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $179.91 | Jan 21, 2025 |
| Cooper Jeffrey Elliott | CFO | SELL | $50K–$100K | 300 | $174.78 | Jan 16, 2025 |
| King James Winston | Chief Admin Officer | SELL | $15K–$50K | 270 | $174.78 | Jan 16, 2025 |
| KELLER MICHAEL C | Director | SELL | $100K–$500K | 2K | $174.78 | Jan 16, 2025 |
| Rosenbaum Michael George | CEO | SELL | $100K–$500K | 1K | $174.78 | Jan 16, 2025 |
| Mullen John P | President | SELL | $100K–$500K | 2K | $174.78 | Jan 16, 2025 |
| Mullen John P | President | SELL | $100K–$500K | 1K | $197.72 | Nov 21, 2024 |
| Mullen John P | President | SELL | $100K–$500K | 1K | $187.68 | Oct 22, 2024 |
| Mullen John P | President | GRANT | N/A | 33K | — | Oct 22, 2024 |
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