Parker Thompson, a second-year undergraduate in applied and computational mathematics, secretary of the Associated Students of the California Institute of Technology (ASCIT), and a peer advocate, died on February 3, 2026. He was 19 years old. In a note to the Caltech community, President Thomas F. Rosenbaum, the Sonja and William Davidow Presidential Chair and professor of physics, recognized Thompson as "an integral member of the student community and student leadership," and noted that he "is