From the news article:
On July 1, Art will pass the stewardship of Seminar XXI to Kenneth Oye, a professor of political science in the School of Humanities, Arts, and Social Sciences and a professor of data systems and society in the School of Engineering. Oye also directs the Program on Emerging Technologies at CIS.
A long-standing executive board member of the program, Oye is well-known to generations of Seminar XXI fellows and faculty. He will serve as the program’s interim director for one year.
Beginning in July 2021, Kelly Greenhill, a professor of political science at Tufts University—and a Seminar XXI veteran and an executive board member—will become a visiting professor at MIT, a senior fellow at SSP, and the director of the Seminar XXI Program.