David Baltimore, President Emeritus and the Judge Shirley Hufstedler Professor of Biology, Emeritus at Caltech and a co-recipient of the 1975 Nobel Prize in Physiology or Medicine, passed away on September 6, 2025. He was 87 years old. Baltimore led a multifaceted career and life as an internationally influential researcher, leader in higher education and public policy, and devoted mentor, colleague, friend, father, and husband. "David Baltimore's contributions as a virologist, discerning