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Tonya Williams has served as a member of the Board of Directors since April 2022. Ms. Williams has served as Head of External Affairs and Corporate Responsibility at SoftBank Group International, since January 2019. Ms. Williams is also currently an Adjunct Professor at the University of Pennsylvania and an advisor to Hangar, a public sector investment firm. Ms. Williams previously worked in the White House as Director of Legislative Affairs for then-Vice President Joe Biden, and before that, as Chief of Staff to Congressman G.K. Butterfield in the U.S. House of Representatives. Earlier in her career, Ms. Williams served as Vice President for IP Policy at GlaxoSmithKline, Vice President for Policy & Communications at the W.K. Kellogg Foundation, and General Counsel to the President Pro Tempore of the North Carolina Senate. Ms. Williams received her J.D. from the University of North Carolina School of Law and a B.A. in political science from the University of North Carolina at Chapel Hill.