Greg Sullivan received his Ph.D. from the University of Illinois and did postdoctoral work at the University of Chicago before joining the UMD faculty in 1995. He is a Fellow of the American Physical Society, and has been named a UMD "Rainmaker" for his prodigious research funding. He has served as the Department's Associate Chair for both Graduate Studies and for Facilities and Personnel, and has held several key leadership positions in his field of high energy physics. He has worked on the on the IceCube experiment at the South Pole, including a role as spokesperson from 2011-13. Physics World named the first observations of cosmic neutrinos by the IceCube Neutrino Observatory the 2013 Breakthrough of the Year. Dr. Sullivan is a co-recipient of the 2016 Breakthrough prize in Physics, serves on the advisory committee for the NSF directorate of geosciences, and also served on the committee of visitors for NSF Antarctic sciences.