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Sean Denham

Executive Vice President, Chief Financial Officer
areas of expertise
Finance and accounting
Audit and advisory services
Risk management

Sean is an Executive Vice President and Chief Financial Officer, responsible for leading finance and accounting, corporate controllership, internal audit, business management, enterprise risk management, and investor relations functions, as well as administering the internal audit function.


Prior to joining SEI, Sean spent 20 years at Grant Thornton, serving in various leadership roles. He most recently served as regional managing partner for the Atlantic Coast, National Audit growth leader, and the national Special Purpose Acquisition Company (SPAC) leader. As an Audit partner of the firm, he served some of Grant Thornton’s most prominent clients, including public and private companies in the professional services industries. Sean began his career focused on audit and mergers and acquisitions at Ernst & Young and Amper, Politziner & Mattia. 

Sean formerly served on the CEO Council for Growth, an initiative of the Philadelphia Chamber of Commerce dedicated to enhancing economic growth and prosperity. He is also heavily involved in the civic community and served as a board member and treasurer for the Greater Philadelphia Alliance for Capital and Technologies (PACT), as well as a cabinet member of the United Way of Greater Philadelphia and Southern New Jersey.

He is a Certified Public Accountant and earned a bachelor’s degree in accounting from Lehigh University.