Assistant professor, Johns Hopkins University, Baltimore
Curator, Guggenheim Museum, New York
Curator, Museum of Modern Art, New York
Chief curator, Institute for Studies on Latin American Art, New York
Curator-at-large, Whitney Museum of American Art, New York
Writer and editor, New York
Senior director, White Cube, New York
Founding director, Matthew Brown Gallery, Los Angeles
Founding director, Garth Greenan Gallery, New York
Director, anonymous gallery, New York; founder, Restaurant Projects and KO Art Advisory