According to NamUs, last seen on 12/26/2012 in Berkeley, CA. Charley Project lists 11/17 as date last seen.

He is a Caucasian male with brown hair and brown eyes, 5'9'' and 120 pounds. He is of Russian descent. Former student at the University of California, Berkeley. His DOB is Aug, 29, 1990. Few details are available in his case, sadly.