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Stephanie Martz is the chief administrative officer and general counsel of the National Retail Federation, where her responsibilities include managing the organization’s in-house counsel department as well as NRF’s policy positions on a variety of issues such as payments and intellectual property. Martz came to NRF in 2017 from Monument Policy Group, a boutique Washington, D.C., lobbying firm where she represented a wide variety of technology clients in Silicon Valley and Seattle on issues ranging from data privacy and national security to competition. She also served as a special assistant to the President and senior counsel in the Office of White House Counsel during the Obama Administration. In the White House, Martz was the senior lawyer in charge of ethics and compliance.

Mike Sievert is president and chief executive officer of T-Mobile and is a member of T-Mobile’s Board of Directors. Mike leads a customer-crazed team of disruptors and innovators, working tirelessly over the last eight years to change the rules of wireless, resulting in T-Mobile becoming the fastest-growing company in the industry. He most recently served as president and chief operating officer of T-Mobile.