Princeton University has named eight new members to its Board of Trustees, effective July 1.
The trustees are:
- Katherine Bradley and Kevin Callaghan, who were elected by the board to serve as charter trustees
- Thomas Frist III, Thomas Rosenbaum and James Yeh, who were elected by the board to serve as term trustees
- John Dabiri and Katharine Strunk, who were elected by alumni to serve as alumni trustees
- Enzo Kho, who was elected by the junior and senior undergraduate classes and the two most recent alumni classes to serve four years as a young alumni trustee.
Completing their terms as trustees on June 30 are: Yolandra Gomez, Class of 1988;
Naomi Hess, Class of 2022; Yan Huo, a 1994 graduate alumnus; Carol Quillen, a 1991 graduate alumna; and Jackie Ying, a 1991 graduate alumna.
Biographical information about the new trustees follows.
Katherine Bradley
Bradley, of Washington, D.C., is the founder and former president of CityBridge, a nonprofit that advances excellence and innovation in public education. CityBridge has also helped launch the D.C.-based nonprofits CityWorks and CitySchools Collaborative, among others.
Bradley chairs the board of the KIPP Foundation, the nation’s largest operator of public charter schools. She also serves as a board member for the National Geographic Society and the D.C. College Access Program.
She previously served on Princeton’s Board of Trustees as an alumni trustee and as a charter trustee.
Bradley earned her bachelor’s degree from the Princeton School of Public and International Affairs in 1986.
Kevin Callaghan
Callaghan, of Boston, is a senior adviser and member of the private equity team at the investment firm Berkshire Partners, where he has held various leadership roles. His experience includes growth companies across several industries, including consumer brands, services and industrials (such as Aritzia, Kendra Scott and Parts Town).
Prior to joining Berkshire in 1987, Callaghan worked at the investment banking firm Lehman Bros. and the consulting firm Bain & Co.
Callaghan currently serves on the board of directors of the Princeton University Investment Co. (PRINCO) and is chair emeritus of the board of trustees for the Museum of Fine Arts in Boston. He has served on numerous other nonprofit boards including the Noble and Greenough School; the United Way of Massachusetts Bay; the Stanford University GSB Trust, of which he served as chair; and various other educational, healthcare/mental health and social services advisory boards.
He earned his B.S.E. in engineering and management systems from Princeton in 1983 and his M.B.A. from Stanford’s Graduate School of Business. Callaghan attended Princeton with the benefit of financial aid, and was the first person from his high school to attend the University.
John Dabiri
Dabiri, of Pasadena, California, is the Centennial Professor of Aeronautics and Mechanical Engineering at the California Institute of Technology (Caltech). He previously served as chair of its faculty board and dean for undergraduate students.
Dabiri was recently named a fellow of the American Association for the Advancement of Science and was honored in 2025 with a National Medal of Science. His other honors include a MacArthur Fellowship, the Presidential Early Career Award for Scientists and Engineers and the Alan T. Waterman Award from the National Science Foundation.
He serves on the board of directors of Nvidia and on the board of trustees of the Gordon and Betty Moore Foundation, a nonprofit dedicated to environmental conservation, research and education.
He earned his B.S.E. in mechanical and aerospace engineering from Princeton in 2001. He served as vice president of the Class of 2001 and is currently a member of the University’s advisory council for mechanical and aerospace engineering. Dabiri earned his M.S. in aeronautics and Ph.D. in bioengineering from Caltech.
Thomas Frist III
Frist, of Nashville, Tennessee, is chairman of the board of HCA Healthcare, a leading healthcare services provider, and the founder and managing principal of the investment firm Frist Capital, which makes equity investments in public and private companies.
Frist serves on the Board of Dean’s Advisors at Harvard Business School. He formerly served on the boards of Verisign, SAIC and Triad Hospitals, Inc. (now part of Community Health Systems).
He is also a longtime director of the Frist Foundation, which has provided grants to nonprofits and community organizations in Nashville and the middle Tennessee region for over 40 years.
He earned his bachelor’s degree in religion from Princeton in 1991 and his M.B.A. from Harvard Business School.
Enzo Kho
Kho, of Dumaguete, Philippines, graduated from Princeton in 2026 with a bachelor’s degree in sociology and a certificate in urban studies.
He served as president of the Undergraduate Student Government. He also worked as a peer career adviser through the Center for Career Development, a community action fellow and executive board member of the Student Volunteers Council through the Pace Center for Civic Engagement, Community Outreach coordinator for the Princeton Filipino Community, and student coordinator for the Office of International Programs. In addition, he performed with diSiac, Triple 8 and the Black Arts Company.
Kho is the co-founder of the Alliance of Empowered Youth in the Philippines, a nonprofit that connects young people from rural communities to opportunities around the country. He also completed internships across Southeast Asia through Princeton, including in Singapore and Malaysia, with the goal of better understanding the institutions and policies shaping Southeast Asia’s development.
In the fall, Kho will begin a master’s degree in politics and international relations at Peking University as a Yenching Scholar.
Thomas Rosenbaum
Rosenbaum, of Pasadena, California, has served as the ninth president of the California Institute of Technology for 12 years. He will retire from the role on June 30.
Rosenbaum, the William A. Fowler professor of physics at the school, is a renowned physicist and expert on the quantum mechanical nature of materials. He was previously on the faculty of the University of Chicago, where he served as provost and as vice president for research and for Argonne National Laboratory. He has also held positions at Bell Laboratories and the IBM Thomas J. Watson Research Center.
He is a fellow of the American Academy of Arts and Sciences, the American Association for the Advancement of Science and the American Physical Society. He received the 2024 Ellis Island Medal of Honor.
He serves as chair of the board of trustees of the Society for Science, as a trustee of the Aspen Center for Physics, and as a member of the American Academy of Arts and Sciences Los Angeles Program Committee.
Rosenbaum earned his bachelor’s degree in physics from Harvard University, and his Ph.D. in physics from Princeton in 1982.
Katharine Strunk
Strunk, of Gladwyne, Pennsylvania, is the dean of the Graduate School of Education and the George and Diane Weiss Professor of Education at the University of Pennsylvania.
She previously was the Clifford E. Erickson Distinguished Chair in Education and a professor of education policy at Michigan State University. Prior to that role, she served on the faculty of the University of Southern California’s Rossier School of Education and Sol Price School of Public Policy and on the faculty of the University of California-Davis School of Education.
Strunk was elected to the National Academy of Education in 2026. She is a member of the executive leadership board for the National Center for Research on Education Access and Choice. She is the former president of the Association for Education Finance and Policy.
She earned her bachelor’s degree from the Princeton School of Public and International Affairs in 1999 and her master’s in economics and Ph.D. in education administration and policy analysis from Stanford University.
James Yeh
Yeh, of Naples, Florida, is the retired president and co-chief investment officer of Citadel LLC, a leading global financial institution. He spent more than 25 years in leadership roles at the firm before retiring in 2022.
Yeh previously served on Princeton’s Board of Trustees as a charter and a term trustee. He also previously served on the board of directors of the Princeton University Investment Co. (PRINCO).
He co-chaired the Venture Forward Campaign Executive Steering Committee and served on the Annual Giving Special Gifts Committee and the Regional Steering Committee during the Aspire campaign. A major gift in the Venture Forward campaign from James and his wife, Jaimie, named one of the new residential colleges at Princeton, Yeh College.
Yeh earned his degree in physics from Princeton in 1987 and earned a master’s degree and a Ph.D. in physics from the University of California-Berkeley.
