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Denis J. O'Leary


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.

Independent Director
Chairman of the Board