Toby Stafford was appointed as a Clay Senior Scholar from January to May, 2013, to participate in Noncommutative Algebraic Geometry and Representation Theory at MSRI.
Richard Schoen was appointed as a Clay Senior Scholar from September to December, 2008, to participate in Geometry, Analysis and General Relativity at the Mittag-Leffler Institute.
Richard Schoen was appointed as a Clay Senior Scholar from June to July, 2013, to participate in Geometric Analysis at PCMI.
Andrei Okounkov was appointed as a Clay Seior Scholar during July 2007 to participate in Statistical Mechanics at PCMI.
Andrei Okounkov was appointed as a Clay Senior Scholar from June to July, 2015, to take part in Geometry of Moduli Spaces and Representation Theory at PCMI.