Board of Directors

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Frank Bisignano is President, Chief Executive Officer and member of the board of directors of Fiserv, Inc. (NASDAQ: FISV), a global leader in financial services and payments technology solutions for financial institutions, businesses and consumers. The company serves clients in more than 100 countries, and in 2021 was recognized among FORTUNE® World's Most Admired Companies for an eighth consecutive year. 

Bisignano joined Fiserv in 2019 and led the company’s day-to-day operations as President and Chief Operating Officer before assuming the role of Chief Executive Officer in July 2020. Prior to joining Fiserv, Bisignano served as Chairman and Chief Executive Officer of First Data. During his tenure, Bisignano transformed the 48-year-old company from the world’s largest traditional payment processor into a technology innovator, industry collaborator, and commerce enabler for the 21st century. He also led its $2.6 billion initial public offering in 2015, the largest U.S. IPO of the year. 

Before joining First Data, Bisignano served as Co-Chief Operating Officer and Chief Executive Officer of Mortgage Banking at JPMorgan Chase & Co. With more than 30 years of executive leadership experience in banks and global financial institutions, Bisignano also served in multiple leadership positions at Citigroup, including Chief Administrative Officer and Chief Executive Officer of the company’s Global Transaction Services unit. 

Among a number of non-profit commitments, he serves on the boards of the National September 11 Memorial and Museum, the Mount Sinai Health System, and The Battery Conservancy; and is a member of Business Roundtable, a U.S.-based association of CEOs who use public policy to promote a thriving economy and expanded opportunities for Americans. 



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Alison Davis has served as a Director at Fiserv, Inc. since 2014 and co-founded and serves as Managing Partner of Fifth Era, a firm that invests in and develops early stage technology companies. Prior to Fifth Era, she was the Managing Partner of Belvedere Capital Partners, Inc., a private equity firm serving the financial services sector, from 2004 to 2010. Prior to joining Belvedere, she served as Chief Financial Officer for Barclays Global Investors, an institutional asset manager that is now part of BlackRock, Inc., from 2000 to 2003, a senior partner at A.T. Kearney, Inc., a leading global management consulting firm, from 1993 to 2000, and a consultant at McKinsey & Company, another leading global management consulting firm, from 1984 to 1993.

In the past five years, in addition to Fiserv, Ms. Davis has served as a director at the following publicly traded companies: Janus Henderson Group (current), a global asset management firm, SVB Financial Group (current), a financial services and bank holding company, Ooma, Inc. (former), a consumer telecommunications company, Royal Bank of Scotland Group plc (former), a British bank holding company, Unisys Corporation (former), a global information technology company and Diamond Foods, Inc. (former), a packaged food company. She also serves as a director at Collibra NV, a privately held data governance software company, and Pacaso, a real estate platform for purchasing second homes.

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Henrique De Castro joined the Board of Fiserv, Inc. as a Director in 2019 after serving as a Director of First Data since 2017. Mr. De Castro is also a Director of the Board at Banco Santander S.A. (BMAD: SAN) and previously served on the Board of Directors of Target Corporation (NYSE: TGT). He led Cantor Fitzgerald’s venture capital arm, Cantor Ventures, from 2015 to 2019 and served as Chief Operating Officer at Yahoo! Inc. between 2012 and 2014. Prior to that, Mr. De Castro held senior executive positions at Google including President of Partner Business, responsible for approximately a third of Google's revenues and President of Media, Mobile & Platforms where he built and scaled the business globally to over 50 countries.

Prior to Google, Mr. De Castro had senior executive roles at Dell Technologies and McKinsey & Company. Mr. De Castro has extensive experience across the globe in the Technology, Internet, Media and Retail industries. He has an MBA from IMD in Switzerland and a Bachelor in Business and Economics from ISEG in Lisbon. He is fluent in English, French, Italian, Spanish and Portuguese

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Harry F. DiSimone has served as a Director of Fiserv, Inc. since 2018. Mr. DiSimone founded and has served as President of Commerce Advisors, Inc., a consulting and advisory services firm for the retail financial services and payments industries, since 2008. From 2010 to 2015, he served as Co-Managing Partner of Encore Financial Partners, Inc., a company focused on the acquisition and management of banking organizations in the United States, which Mr. DiSimone also co-founded. Prior to 2008, Mr. DiSimone spent over 30 years at J.P. Morgan Chase & Company and its predecessor organizations holding various senior level positions including Executive Vice President, Chief Operating Officer of the Chase credit card business, Private Label Card and Merchant Processing Executive, Retail Bank Chief Marketing Officer, Consumer Banking, Investments and Insurance Executive and Chase Personal Financial Services Executive.

Mr. DiSimone also currently serves as a director at Reliant Funding, Inc., a privately held provider of short-term small business loans, and ClearBalance Inc., a privately held provider of patient loan programs to hospitals and health care systems nationwide.

Mr. DiSimone previously advised a number of retail banking and payment organizations, including The Direct Marketing Association (now known as The Data & Marketing Association), the NYCE Payment Network, Chase Paymentech, MasterCard’s U.S. Business Committee, Visa Global Advisors, the New York Clearing House’s Strategic Planning Committee and the Federal Reserve Bank’s Payment Card Council.

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Dennis F. Lynch has served as a Director of Fiserv, Inc. since 2012. Mr. Lynch served as Chairman of Cardtronics plc, a publicly traded company and the largest owner and operator of retail ATMs worldwide, from 2010 until his retirement in 2018 and as a director of Cardtronics from 2008 to 2018. He was a director and Chairman of the Secure Remote Payments Council, a cross-industry organization dedicated to accelerating the growth, development and market adoption of more secure e-commerce and mobile payments. Mr. Lynch also previously served as: Chairman and Chief Executive Officer of RightPath Payments, Inc. from 2005 to 2008; a director of Open Solutions, Inc. from 2005 to 2007; President and Chief Executive Officer of NYCE Corporation from 1996 to 2004. Mr. Lynch was employed by Fleet Financial Group from 1981 until 1994 where he was Senior Vice President in charge of retail payment products. While at the bank he also served as a founding director and Chairman of Yankee 24 ATM Network from 1988 to 1990.

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Wafaa Mamilli joined the Board of Fiserv, Inc. in June 2021. Ms. Mamilli serves as Executive Vice President and Chief Information and Digital Officer of Zoetis Inc. and leads global technology, digital, analytics and cybersecurity teams powering business innovation, growth and customer experiences. In addition, she is responsible for developing the company’s digital and data analytic strategies and solutions that advance animal care and customer businesses. Mamilli joined Zoetis from Eli Lilly and Company, where she spent more than 20 years in a variety of leadership positions including Global Chief Information Officer. As Eli Lilly’s first Chief Information Security Officer (CISO), she led the strategy and execution to secure digital products, devices, manufacturing systems and information across the business.

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Heidi G. Miller joined the Fiserv Board of Directors in 2019 after serving on the Board of First Data since 2014. She is an accomplished senior executive in the financial services industry. Prior to retiring in 2012, Ms. Miller was president of JPMorgan International, a division of JPMorgan Chase & Co. Before that she served as CEO of JPMorgan Chase’s Treasury and Security Services, leading 35,000 people in 50 countries. Ms. Miller also served as executive vice president and chief financial officer for Bank One Corporation. She has held other CFO positions including at the Travelers Group and later at Citigroup.

Ms. Miller has an extensive background leading diverse companies and organizations. Ms. Miller currently serves as a director of Waystar, a leading provider of revenue cycle technology. Previously she served as a director of HSBC Holdings PLC from 2014 to 2021, General Mills Inc. from 1999 to 2019, Progressive Corp. from 2011 to 2014, and as a trustee of the International Financial Reporting Standards Foundation.

Ms. Miller was featured in American Banker's Most Powerful Women ranking from 2003-2010 and was No. 1 on the banking list from 2007-2009. In 2008, she topped Crain's list of the “50 Most Powerful Women in New York”.

Ms. Miller graduated from Princeton University with a bachelor’s degree in history and completed her doctorate in history at Yale University in 1979.

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Scott C. Nuttall joined the Fiserv Board of Directors in 2019 after serving on the Board of First Data since 2007. He is the Co-Chief Executive Officer and a director of KKR. He joined KKR in 1996. Prior to joining KKR, he was with the Blackstone Group where he was involved in numerous merchant banking and merger and acquisition transactions. He received a B.S., summa cum-laude, from the University of Pennsylvania.

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Denis J. O'Leary is the Chairman of Fiserv, Inc. He has served as a Director since 2008 and was Lead Director from 2019 until his appointment as Chairman in 2021. Mr. O’Leary is a private investor, and from 2009 to 2015, he served as Co-Managing Partner of Encore Financial Partners, Inc., a company focused on the acquisition and management of banking organizations in the United States. From 2006 to 2009, he was a senior advisor to The Boston Consulting Group with respect to the enterprise technology, financial services and consumer payments industries. Through 2003, he spent 25 years at J.P. Morgan Chase & Co. and its predecessors in various capacities, including Director of Finance, Chief Information Officer, Head of Retail Banking, Managing Executive of Lab Morgan (strategic equity investment in fin-tech) and Executive Vice President. He has a B.A. in economics from the University of Rochester and an MBA from the Stern School at NYU.

Mr. O’Leary also currently serves as a director at CrowdStrike Holdings, Inc., a publicly traded computer security software company, and Ventiv Technology, Inc., a privately held provider of software solutions for risk management, claims administration and policy administration.

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Doyle R. Simons has served as a Director of Fiserv, Inc. since 2007. Mr. Simons served as President and Chief Executive Officer and a director of Weyerhaeuser Company, a publicly traded company focused on timberlands and forest products, from 2013 to 2018. He then served as a senior advisor at Weyerhaeuser until his retirement in April 2019. Prior to joining Weyerhaeuser in 2013, Mr. Simons served in a variety of roles for Temple-Inland, Inc., a manufacturing company focused on corrugated packaging and building products which was acquired in 2012. From 2007 to early 2012, he was the Chairman and Chief Executive Officer; from 2005 to 2007, he was Executive Vice President; from 2003 to 2005, he served as its Chief Administrative Officer; from 2000 to 2003, he was Vice President – Administration; and from 1994 to 2000, he served as Director of Investor Relations.

In the past five years, in addition to Fiserv, Mr. Simons served as a director at the following publicly traded companies: Iron Mountain Incorporated (current), a storage and information management company, and Weyerhaeuser Company (former).

Kevin Warren

Kevin M. Warren joined the Board of Fiserv, Inc. as a Director in October 2020. Mr. Warren serves as Chief Marketing Officer and is a member of the executive leadership team at UPS, a publicly traded global logistics company, with responsibility for the company’s U.S. and international marketing, digital marketing and infrastructure analytics, e-commerce strategy, The UPS Store®, revenue management, business planning, customer experience and brand relevancy. 

Prior to joining UPS, Mr. Warren spent 36 years at Xerox Corporation, most recently serving as Executive Vice President and Chief Commercial Officer. During his tenure, he held numerous leadership positions, including President of Global Growth Opportunities, Chairman and Chief Executive Officer of Xerox Canada and President of U.S Client Operations.   

Mr. Warren currently serves as a director of Georgetown University and the UPS Foundation, an organization that supports community efforts to provide diverse populations with advancement opportunities. Previously he served as a director of Illinois Tool Works, an American Fortune 200 company, from 2010 to 2021.  He is also a current member of the Executive Leadership Council.

Mr. Warren received his Bachelor of Science in finance from Georgetown University, and in 2007 completed the Advanced Management Program in Business/Commerce at Harvard Business School.