Guidewire Software
NYSE: GWREIncorporated in Delaware · 4 known investors
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Guidewire provides technology and software for property and casualty (P&C) insurers to run and grow their business. It serves the insurance industry with a platform for core operations, data, and digital engagement.
Founders & leadership
MR

Marcus RyuFounderMarcus Ryu co-founded Guidewire Software (NYSE:GWRE), a provider of technology for property and casualty insurers, and led it from inception through its 2012 IPO. He is now a venture investor at Battery Ventures focused on vertical enterprise applications/AI, video AI, and fintech/insurtech.
JM

John MullenPresidentJohn Mullen is President of Guidewire Software, overseeing field operations including sales, customer success, and services across multiple regions. Previously, he held executive positions at Capgemini, most recently leading its North American business unit, and holds bachelor's and master's degrees from the University of Dayton and University of Tulsa.
WK

Winston KingChief Administrative Officer & General CounselWinston King serves as Chief Administrative Officer, General Counsel, and Secretary at Guidewire Software, which provides technology and software for property and casualty insurers. He brings executive experience in operational and legal matters across HR, IT, procurement, M&A, corporate governance, data and privacy, and compliance, with prior expertise in enterprise SaaS, tech-enabled services, and research industries.
DP

David PetersonSenior Vice President, Chief Accounting OfficerDavid Peterson is Chief Accounting Officer at Guidewire Software, a provider of core operations and digital engagement technology for property and casualty insurers. He has held senior financial roles across public companies, private-equity-backed firms, and venture-backed organizations in the software, SaaS, and semiconductor sectors.
AP
Arvind ParthasarathiFounder
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George NgFounder
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James KwakFounder
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John RaguinFounder
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John SeyboldFounder
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Ken BransonFounder
Investors · 4
Battery Ventureslisted by Battery VenturesBoston · $500K – $100M
How we know: Battery Ventures's portfolio page · open dataset · 5k.vc investor directory · Not right? Tell us
Also in the syndicate · 1
Oppenheimer Asset Management Inc.
Founder mafia
5 people who came through Guidewire Software went on to found or lead other companies.
Related companies · 1
Companies working in the same space as Guidewire Software.
Frequently asked questions
- What does Guidewire Software do?
- Guidewire provides technology and software for property and casualty (P&C) insurers to run and grow their business. It serves the insurance industry with a platform for core operations, data, and digital engagement.
- Who founded Guidewire Software?
- Guidewire Software was founded by Marcus Ryu.
- Who are Guidewire Software's investors?
- Guidewire Software's investors include Battery Ventures, IVP (Institutional Venture Partners), US Venture Partners.







