Tax Executive Institute (TEI)

Pilar Mata is Executive Director for Tax Executives Institute, the preeminent global association of in-house tax professionals, comprised of more than 6,500 members from 2,800 of the largest companies in North America, Europe, Latin America, and Asia. Pilar is responsible for leading TEI’s professional staff, guiding and implementing its agenda in consultation with TEI’s International President, Executive Committee, and Board of Directors, and interacting with TEI’s chapters, committees, government relations, and other constituents.

Pilar served as TEI's Tax Counsel from 2015-2021, prior to becoming Executive Director. Before joining TEI, Pilar provided clients with strategic advice on state and local tax matters and represented them in controversy matters at the audit, administrative, trial, and appellate levels at Sutherland Asbill & Brennan LLP (2009-2015) and Morrison & Foerster LLP (2000-2009). Pilar earned her J.D. from the University of California at Berkeley School of Law, her M.S. in Finance from San Diego State University, and her B.B.A. from the University of San Diego. She is a frequent author and speaker. State Tax Notes recognized Pilar in 2017 for her work on the partnership audit rules project.

Consulting KPMG

John Modzelewski, a distinguished professional with over 20 years experience in the tax industry, plays a crucial role within KPMG's Ignition Tax technology practice. As Chief Data Officer for the Tax function, he leads efforts to integrate advanced data analytics with tax compliance. John's deep understanding of US and international tax laws is complemented by his technological acumen, and he brings both together in the development of sophisticated financial models for strategic scenario planning. His work in automating processes and aligning tax returns with current regulations positions him as a pivotal figure at the intersection of tax law and technology innovation.

Thomson Reuters Institute (TRI)

Lizzy Duffy is the Senior Director of Engagement for the Thomson Reuters Institute, where she focuses on research and strategic advisory for corporate tax departments and tax firms. Lizzy leverages empirical research and client engagement to understand the strategic priorities and market trends impacting corporate tax departments, and translates those insights into actionable guidance. She is a frequent speaker and moderator at industry events, and contributes to the Institute’s annual report on the state of corporate tax departments.