As of November 10, 2026, Guidewire Software, Inc. is a publicly traded company (NYSE: GWRE); its largest reported holder is Baron Capital Group, Inc., with 10.8% on Schedule 13G/A of July 2, 2026, then BlackRock (10.2%). The largest insider holding is Rosenbaum Michael George, the chief executive and a director, with 271,266 shares (0.33% of shares outstanding), per Form 4 of November 9, 2026 (Schedule 13G/A, July 2, 2026).
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Is Guidewire Software, Inc. a real, registered company?
- Guidewire Software, Inc. files with the SEC under CIK 1528396 (its SEC filings).
- Its shares are listed under the ticker GWRE on NYSE (SEC company record).
- Incorporated in Delaware; business address in San Mateo, California, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Guidewire Software, Inc. in our court records and SEC 8-K records (as of 2026-11-10).
- Leadership changes: the latest reported is David Peterson, Chief Accounting Officer (Form 8-K filed 2026-09-03). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Baron Capital Group, Inc. (filed 2026-07-02).
Who are Guidewire Software, Inc.'s owners and officers?
Guidewire Software, Inc.: incorporated in Delaware; business address in San Mateo, California; industry Services-Prepackaged Software (Form D, 2026-09-03).
| Report | Holder | Share |
|---|---|---|
| Schedule 13G/A, 2026-07-02 | Baron Capital Group, Inc. | 10.8% |
| Schedule 13G/A, 2026-05-15 | Linonia Partners Fund LP | 9% |
| Schedule 13G/A, 2026-05-15 | Baron Capital Group, Inc. | 7.79% |
| Schedule 13G/A, 2026-05-14 | Massachusetts Financial Services Company | 3.5% |
| Schedule 13G, 2026-04-30 | Vanguard Capital Management | 5.3% |
| Schedule 13G, 2026-04-29 | Vanguard Portfolio Management | 5.45% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-17 | Baron Capital Group, Inc. | 6.05% |
| Schedule 13G/A, 2026-02-17 | Linonia Partners Fund LP | 6.3% |
| Schedule 13G, 2025-09-29 | Linonia Partners Fund LP | 5% |
| Schedule 13G/A, 2025-07-02 | Blackrock, Inc. | 10.2% |
Questions about who owns Guidewire Software, Inc.
Who owns Guidewire Software, Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of Guidewire Software, Inc.: Baron Capital Group, Inc. (10.8%, Schedule 13G/A, filed 2026-07-02), Blackrock, Inc. (10.2%, Schedule 13G/A, filed 2025-07-02), Linonia Partners Fund LP (9%, Schedule 13G/A, filed 2026-05-15), Vanguard Portfolio Management (5.45%, Schedule 13G, filed 2026-04-29) and Vanguard Capital Management (5.3%, Schedule 13G, filed 2026-04-30).
Who are the largest shareholders of Guidewire Software, Inc.?
By the share each holder's latest filing reports, the largest holders of Guidewire Software, Inc. on this page are Baron Capital Group, Inc. (10.8%), Blackrock, Inc. (10.2%) and Linonia Partners Fund LP (9%).
When did Baron Capital Group, Inc. buy into Guidewire Software, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Baron Capital Group, Inc. on this page is the Schedule 13G/A, filed 2026-02-17, reporting 6.05%; its latest, Schedule 13G/A filed 2026-07-02, reports 10.8%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What the Full Report on Guidewire Software, Inc. covers
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What They Do, And How The Money Works
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The Money: Funding, Valuation, Runway
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-09-03 | David Peterson | Chief Accounting Officer | departed | 2026-11-04 |
| Form 8-K, 2026-07-22 | Alexander Vollert | Director | appointed | 2026-08-01 |
Which insiders own Guidewire Software, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and a director: 271,266 shares (0.33% of shares outstanding) (Form 4, 2026-11-09).
- , the president: 176,447 shares (0.22% of shares outstanding) (Form 4, 2026-10-27).
- , the chief financial officer: 85,420 shares (0.10% of shares outstanding) (Form 4, 2026-09-21).
- , the chief admin officer and general couns: 35,371 shares (0.04% of shares outstanding) (Form 4, 2026-10-13).
- , a director: 16,393 shares (0.02% of shares outstanding), 14,393 held directly and 2,000 indirectly (Form 4, 2025-12-16).
Shares outstanding: 81,992,669 as of 2026-08-31, from the company's latest SEC cover page.
How much has Guidewire Software, Inc. raised?
No fundraising or offering filing from Guidewire Software, Inc. is on file with us.
Keep reading
More on Guidewire Software, Inc. and the records around it.
Guidewire Software, Inc. elsewhere on the record
- Leadership changes Sep 2026
- 5%+ stake filings Jul 2026
Companies that share a holder
- Linonia Partners Fund LP also filed stake reports on 3 other companies: Liberty Live Holdings, Inc. (Sep 2026), The New York Times Company (Aug 2026), Liberty Media Corporation (Oct 2025)
- BAMCO INC /NY/ also filed stake reports on 22 other companies: Birkenstock Holding plc (Aug 2026), Blackstone Digital Infrastructure Trust Inc. (Aug 2026), CAREDX, INC. (Aug 2026)
- Massachusetts Financial Services Company also filed stake reports on 26 other companies: ASHLAND INC. (Aug 2026), BLACKSTONE DIGITAL INFRASTRUCTURE TRUST INC (Aug 2026), PG&E CORP (Aug 2026)
Related pages
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