--- title: "Leadership" description: "The Guidewire Leadership Team has decades of experience in P&C insurance and technology. Learn more about how our leadership is guiding success." url: "https://www.guidewire.com/es/about/leadership.md" language: "es" locale: "es" --- # Leadership The Guidewire Leadership Team has decades of experience in P&C insurance and technology. Learn more about how our leadership is guiding success. Our Leadership With decades of customer-driven experience in P&C insurance and technology, Guidewire’s leadership has the background you can rely on to help move your business forward. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/hero-leadership--800w.jpg?h=415&iar=0&w=800) ## Meet the Executive Team ### Mike Rosenbaum #### Chief Executive Officer Mike Rosenbaum joined Guidewire as Chief Executive Officer in 2019 and has served on its board of directors ever since. Under his leadership, Guidewire has accelerated its transition to the cloud, expanded its global customer base, grown its product portfolio, and built the largest partner ecosystem in P&C insurance. These results reflect Mike’s practical, customer-led approach: staying close to customers, setting ambitious but clear priorities, and giving teams the clarity and trust they need to execute. Before joining Guidewire, Mike led product management and go-to-market strategy for core CRM products at Salesforce and served as a submarine officer in the U.S. Navy. He has served on the board of directors of DocuSign, Inc. (NASDAQ: DOCU) since September 2025 and is an aspiring scratch golfer. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/mike-rosenbaum--250w.jpg?h=250&iar=0&w=250) Guidewire’s objective is simple: we help insurers deliver better outcomes for their customers. That means providing technology and partnerships that enable insurers to adapt with confidence as the industry and technology landscape changes. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/mike-rosenbaum-v4--540x800.png?h=800&iar=0&w=540) ### John Mullen #### President John leads Guidewire’s Global Sales, Delivery Services, and Customer Success organizations. He is an accomplished senior executive with more than 25 years of experience in driving high-growth teams to shape and deliver industry transformation. As head of the $4B+ North America Business Unit at Capgemini, John led a global team of professionals in delivering innovative solutions that support the strategic growth of the world’s leading brands. Previously he had led the Capgemini Insurance Business Unit, overseeing the expansion of Capgemini’s global insurance business. He began his career with eight years at Accenture. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/john-mullen-v2--250w.jpg?h=250&iar=0&w=250) With the rigor built into Guidewire’s products and roadmap, as well as our commitment to data and decision sciences, we will tirelessly develop the market-leading platform that enables our customers to transform their businesses and drive innovative marketing approaches. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/john-mullen--540x800.jpg?h=800&iar=0&w=540) ### Jeff Cooper #### Chief Financial Officer As Chief Financial Officer, Jeff is responsible for Guidewire’s financial operations, which includes FP&A, accounting, investor relations, facilities, and procurement. He contributes to strategic planning and helps assess risks and opportunities. Previously, Jeff oversaw company financials as the Vice President of Finance at Guidewire. Prior to that, he was the Chief Financial Officer at GoodData and Vice President of Finance at Rally Software. Jeff began his career as an investment banker focused on the software industry. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/jeff-cooper--250w.jpg?h=250&iar=0&w=250) Finance has an exciting role to play in ensuring that we invest appropriately in our consequential transition to a cloud platform. We know that these investments will form the basis of Guidewire’s market leadership, and customer success, for years to come. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/jeff-cooper--540x800.jpg?h=800&iar=0&w=540) ### Winston King #### Chief Administrative Officer and General Counsel Winston is responsible for Guidewire’s worldwide administrative functions, including business technology, legal, and corporate services. He also manages Guidewire’s corporate and compliance matters, as the company’s General Counsel and Secretary. Prior to Guidewire, Winston served as EVP, General Counsel, and Secretary at Infogroup and also worked at WilmerHale, an international law firm. Winston served as a clerk to Judge Bruce Selya on the US First Circuit Court of Appeals. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/winston-king--250w.jpg?h=250&iar=0&w=250) Our understanding of the vital role that insurers play in our world and economy drives each of us to constantly innovate and provide the best products and services possible to our customers. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/winston-king--540x800.jpg?h=800&iar=0&w=540) ### David Peterson #### Chief Accounting Officer David brings deep financial leadership to his role as Chief Accounting Officer at Guidewire, where he previously served as Corporate Controller overseeing core accounting and financial operations. Before joining the company, he worked as a consulting chief financial officer, advising organizations through complex financial decisions. He also held senior finance roles, including Chief Financial Officer, Chief Accounting Officer, and Corporate Controller, at Keynote Systems, a marketing software company. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/david-peterson--250w.jpg?h=250&iar=0&w=250) By upholding the highest standards in financial reporting and operations, we help Guidewire remain a trusted partner to our customers and a responsible steward for our stakeholders. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/david-peterson--540x800.jpg?h=800&iar=0&w=540) ### Christina Colby #### Chief Customer Officer As Guidewire’s Chief Customer Officer, Christina helps customers to realize optimal value through their journey with Guidewire. Previously, Christina led cloud sales strategy globally at Guidewire, leveraging her commercial and operational cloud experience. She brings deep consulting knowledge to Guidewire programs as well as SaaS proficiency from her 15 years at Capgemini. Christina also spent four years on the executive leadership team of Virtustream, the mission-critical cloud company of Dell Technologies. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/christina-colby--250w.jpg?h=250&iar=0&w=250) We partner with our customers on every step of their journey, empowering them to achieve their business objectives for today and over the long term. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/christina-colby--540x800.jpg?h=800&iar=0&w=540) ### Brigette McInnis-Day #### Chief People Officer Brigette McInnis-Day is the Chief People Officer of Guidewire, bringing over 25 years of experience leading HR, operations, and organizational transformation at UiPath, Google Cloud, SAP, and Mercer. She is recognized for advancing inclusion, scaling global teams, and embedding AI and automation into HR to drive business growth. Brigette holds a Master’s in Industrial/Organizational Psychology and was named one of the Top 50 Women Leaders of Philadelphia (2024). ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/brigette-mcinnis-day--250w.jpg?h=250&iar=0&w=250) As Guidewire creates a more intelligent future for P&C insurers, we continue to leverage the passion of Guidewire employees to bring industry-specific innovations and experiences to our customers. Together, we are pushing the boundaries of what’s possible in insurance technology. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/brigette-mcinnis-day--540x800.jpg?h=800&iar=0&w=540) ### Brian Desmond #### Chief Marketing Officer Brian leads Guidewire’s global marketing efforts, including demand generation, branding, and communications. Brian joined Guidewire in 2006, and during his tenure the company has been recognized as an industry-leading brand serving customers in more than 30 countries. He previously was Vice President of Marketing for PeopleSoft’s supply chain division and held marketing leadership and product marketing roles at Ketera, Ariba, and Tradex. Brian serves on the board of directors of Betterview, an insurtech that provides a geospatial predictive analytics platform for P&C insurance. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/brian-desmond--250w.jpg?h=250&iar=0&w=250) After 18 years at Guidewire, I have a deep appreciation for the role P&C insurance plays in our society. This motivates me to do my part to ensure we keep improving every day to better serve our customers. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/brian-desmond--540x800.jpg?h=800&iar=0&w=540) ### Dan Brown #### Chief Product Officer Dan Brown joined Guidewire as Chief Product Officer in 2026 and leads product strategy and execution. He brings more than 25 years of enterprise software experience. At Guidewire, Dan is focused on embedding AI across our core applications to transform how global P&C insurers underwrite risk and manage claims. Prior to Guidewire, he served as Chief Product Officer at Celonis and spent more than six years as Chief Product and Strategy Officer at Certinia, where he led product management and engineering for the company’s global product development organization. Earlier, Dan spent more than nine years at Microsoft in leadership roles spanning corporate strategy and Dynamics application R&D. He holds a master’s degree in computer science and a bachelor’s degree in philosophy from Stanford University. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/dan-brown--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/dan-brown-v3--540x800.jpg?h=800&iar=0&w=540) ### Diego Devalle #### Chief Product Development Officer Diego has held numerous executive positions overseeing technology and product development in the San Francisco Bay Area, India, and Europe. In his role at Guidewire, he drives design and strategy to implement engineering goals that address the needs of P&C insurers, such as the requirement to rapidly bring new and differentiating insurance products to market. Prior to Guidewire, Diego served as Vice President of Software Development and Vice President of Product and Engineering at SAP Labs. He began his enterprise software career at Baan in the Netherlands. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/diego-devalle--250w.jpg?h=250&iar=0&w=250) In every customer interaction, we are committed. On day one, Guidewire set out to serve the P&C industry, and years later, the development mindset is always to extend platform capabilities to make more possible. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/diego-devalle--540x800.jpg?h=800&iar=0&w=540) ### Shane Cassidy #### Chief Commercial Officer Shane Cassidy joined Guidewire in 2026 and serves as Chief Commercial Officer. He brings more than two decades of insurance industry experience focused on using digital innovation and business transformation to meet insurers’ evolving needs. Prior to Guidewire, Shane spent 20 years at Capgemini, most recently as Executive Vice President of its Global Insurance Practice and head of its Global Insurance Business Unit. There, he shaped the firm’s insurance strategy and services, including its approach to customer relationships and core capability transformation. At Guidewire, Shane is focused on deepening relationships with existing customers and helping insurers solve specific business problems through Guidewire’s growing portfolio of solutions. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/shane-cassidy--250w.jpg?h=250&iar=0&w=250) I believe Guidewire is hands down the best platform for harnessing the power of AI and operationalizing it to benefit our customers. That’s why I’m here. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/shane-cassidy--540x800.jpg?h=800&iar=0&w=540) ### Michael Mahoney #### Head of Global Professional Services Michael Mahoney leads Guidewire’s Global Professional Services organization, helping customers adopt, scale, and realize value from the Guidewire Cloud Platform. With more than 25 years of experience in enterprise software and transformation, Michael has built and led services organizations that drive cloud growth and measurable outcomes. At Guidewire, he has repositioned Professional Services to co-engage with partners around a solutions-oriented portfolio and advance AI-enabled delivery that accelerates adoption and improves customer success. Prior to Guidewire, Michael led SAP’s $1.6B North America Services business and held senior roles across services sales, operations, and regional leadership. Earlier in his career, Michael held roles at Deloitte Consulting, advising enterprise clients on large-scale business and technology transformation. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/michael-mahoney--250w.jpg?h=250&iar=0&w=250) Guidewire Professional Services is redefining how insurers move to and succeed in the cloud—combining deep domain expertise with AI-enabled delivery to accelerate outcomes, improve quality, and unlock the full value of the Guidewire platform. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/michael-mahoney--540x800.jpg?h=800&iar=0&w=540) ## Meet the Board of Directors ### Mike Rosenbaum #### Chief Executive Officer Mike Rosenbaum joined Guidewire as Chief Executive Officer in 2019 and has served on its board of directors ever since. Under his leadership, Guidewire has accelerated its transition to the cloud, expanded its global customer base, grown its product portfolio, and built the largest partner ecosystem in P&C insurance. These results reflect Mike’s practical, customer-led approach: staying close to customers, setting ambitious but clear priorities, and giving teams the clarity and trust they need to execute. Before joining Guidewire, Mike led product management and go-to-market strategy for core CRM products at Salesforce and served as a submarine officer in the U.S. Navy. He has served on the board of directors of DocuSign, Inc. (NASDAQ: DOCU) since September 2025 and is an aspiring scratch golfer. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/c-level/2026/mike-rosenbaum--250w.jpg?h=250&iar=0&w=250) Guidewire’s objective is simple: we help insurers deliver better outcomes for their customers. That means providing technology and partnerships that enable insurers to adapt with confidence as the industry and technology landscape changes. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-mike-rosenbaum-v2--540x800.jpg?h=800&iar=0&w=540) ### Michael Keller #### Chairman Mike has served on Guidewire’s board of directors since 2019 and has been Chairman of our Board since March 2024. Since April 2019, he has served as chairman of Guidewire’s customer Strategic Advisory Councils. Mike has also served on the board of Encova Mutual Insurance Group since August 2020. From June 2001 to June 2018, Mike was the Executive Vice President and Chief Information Officer at Nationwide Insurance and Financial Services. From January 1998 to May 2001, he served as Chief Technology Officer at JPMorgan Chase & Co. (formerly Bank One). ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-michael-keller--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-michael-keller-v2--540x800.jpg?h=800&iar=0&w=540) ### Mark Anquillare #### Board Member Mark has served on our Board since 2024. He was President and Chief Operating Officer of Verisk Analytics, Inc. (Nasdaq: VRSK), an insurance industry data analytics and technology provider through 2023. Prior to that, Mark served as Verisk’s Chief Financial Officer from 2007 to 2016, leading the company through its 2009 IPO. Since 2023, he has been a member of the board of directors of TruBridge, Inc. (NASDAQ: TBRG), a healthcare solutions company. He currently serves as the chair of its audit committee and as a member of its compensation and innovation & technology committee. Mark has also served on the board of directors of RegEd, a RegTech solutions and compliance software provider for the financial services industry since 2025. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-mark-anquillare--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-mark-anquillare-v2--540x800.jpg?h=800&iar=0&w=540) ### David Bauer #### Board Member David has served on Guidewire’s board of directors since October 2022. He currently serves as Managing Partner and Co-Founder of Holding Ground Decision Intelligence LLC, which provides strategic technology assessment and diligence services for investment companies, boards, and executives, a position he has held since January 2020. From November 2014 to January 2020, David served as Managing Partner at Sand Hill East LLP and provided early-stage companies with go-to-market, product, security, technology, and operations advisory services. He also previously served as CTO at Asurion, and CISO at Morgan Stanley and Merrill Lynch. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/david-bauer--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-david-bauer-v2--540x800.jpg?h=800&iar=0&w=540) ### Margaret Dillon #### Board Member Margie has served on Guidewire’s board of directors since 2019. From December 1993 to September 2017, she held various executive positions at Liberty Mutual Insurance Company, including Senior Vice President and Chief Financial Officer, Personal Insurance, and Executive Vice President and Chief Customer Officer, US Consumer Markets. Margie has also served on the board of directors of White Mountains Insurance Group, Ltd since May 2021, and the board of Hi Marley since February 2022. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/margaret-dillon--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/margaret-dillon--540x800.jpg?h=800&iar=0&w=540) ### Catherine Lego #### Board Member Cathy has served on Guidewire’s board of directors since 2019. She has also served on the board of directors of Cirrus Logic Inc. since 2020 and on the board of Infleqtion since 2023. From 2016 to 2021, Cathy served on the board of IPG Photonics; from 2006 to 2022 she was on the board of Lam Research; from 2013 to 2016, she served on the board of Fairchild Semiconductor International; and from 1989 to 2002 and 2004 to 2016 she was on the board of SanDisk. From June 1992 to December 2018, Cathy was an angel investor and financial consultant to early-stage technology companies via her company Lego Ventures, where she served as the principal. Cathy previously practiced as a CPA with Coopers & Lybrand (now PricewaterhouseCoopers). ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/catherine-lego--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/catherine-lego--540x800.jpg?h=800&iar=0&w=540) ### Rajani Ramanathan #### Board Member Rajani has served on Guidewire’s board of directors since June 2021. She is currently a director and an advisor/investor to several public and private technology companies in the AI, VR, blockchain, IMU/sensor, BIM technology space. Since October 2021, she has served on the board of Hayden AI, a smart city solutions provider that developed the world’s first autonomous traffic management platform. Since May 2023, she has served on the board of Sportradar, a public company that is the world's leading sports technology company, at the intersection between sports, media and betting. Previously, she has served on the board of companies such as Faro Technologies, ESI and Cloudcherry. From June 2000 to March 2014, Rajani held a variety of leadership roles at Salesforce, most recently Chief Operating Officer and Executive Vice President – Technology and Products. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-rajani-ramanathan--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-rajani-ramanathan-v2--540x800.jpg?h=800&iar=0&w=540) ### Jeff Sloan #### Board Member Jeff has served on our Board since January 2025. He was the Chief Executive Officer of Global Payments Inc. (NYSE: GPN), a leading worldwide provider of software solutions and payments technology, from October 2013 to June 2023. Prior to that, he was Global Payment’s president from June 2010 to September 2013. Between September 1998 and May 2010, he held various executive positions at Goldman Sachs, including as worldwide head of the financial technology group and partner. With Goldman, Mr. Sloan focused on mergers and acquisitions and corporate finance, and he pioneered the development of the firm’s financial technology practice in investment banking. He has also served on the boards of directors of Corpay (NYSE: CPAY) since July 2013, NCR Voyix (NYSE: VYX) since March 2025, and Verifone, Inc. since June 2025. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-jeff-sloan--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-jeff-sloan-v2--540x800.jpg?h=800&iar=0&w=540) ### Alexander Vollert #### Board Member Alexander has served on our Board since August 2026. He served as Chief Operating Officer of AXA SA and Chief Executive Officer of AXA Group Operations from December 2021 to December 2025. During this time, he was also a member of AXA's Group Management Committee. Prior to that, he served as Chief Executive Officer of AXA Germany from September 2016 to December 2021. Before joining AXA, he spent more than seven years at Allianz Deutschland AG in a series of senior leadership roles, culminating in his appointment as Chief Executive Officer of its German P&C business, a position he held from January 2014 to September 2016. Earlier in his career, he spent nine years at McKinsey & Company, where he became a Partner and advised leading financial services institutions across multiple markets on strategy and large-scale transformation programs. He currently serves as Senior Advisor to AXA's Group Management Committee. ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-alex-vollert--250w.jpg?h=250&iar=0&w=250) ![](https://edge.sitecorecloud.io/guidewiresodb06-guidewire0f2e-productioncd91-5186/media/images/about-us/leadership/board-of-directors/2026/bod-alexander-vollert-v2--540x800.jpg?h=800&iar=0&w=540) ## Get Involved Want to make an impact in the Guidewire developer ecosystem? Contact the Guidewire Developer Relations team. [Apply for the Next Cohort](mailto:developer_feedback@guidewire.com) ## Investor Relations View our corporate governance, stock information, shareholder services, and more. [Learn More About Investor Relations](https://ir.guidewire.com/)