Paul Holzer serves as CEO and co-founder of XenoTherapeutics. He is a scientist, engineer, and entrepreneur with over fifteen years of experience in various leadership and team management roles, and most recently in the fields of scientific research and new venture formation.


Prior to founding XenoTherapeutics, Paul served as an Officer in the United States Military, with four decorated combat deployments to theatres including Iraq, Afghanistan, and other undisclosed locations. He left the Military in 2013.


During his transition to civilian life, Paul was a Charles Stark Draper Fellow at the Massachusetts Institute of Technology where he completed the master’s program in mechanical engineering. Upon graduation he was introduced to and trained under Dr. David Sachs and Dr. Curtis Cetrulo at Massachusetts General Hospital, in the Transplantation Biology Research Center.


Paul’s interest in science and medicine continued as he completed his formal training as a Paramedic (EMT-P) of the Commonwealth of Massachusetts and was later awarded The President’s Volunteer Service Award for leading a team of clinicians and first responders during a humanitarian mission to the Philippines following Typhoon Haiyan in 2013.


In addition to his many interests, Paul’s philanthropic efforts guided him to becoming a founding board member and Treasurer of the New England Navy SEAL Foundation (NSFNE), and in 2015 was appointed by Governor Charlie Baker to serve as a Trustee of Bunker Hill Community College and assist in overseeing the health of its $80 million endowment.


Paul earned his Bachelors of Science in Mechanical Engineering from the University of Florida; a Masters of Science in Mechanical Engineering and Naval Architecture at the Massachusetts Institute of Technology, and his Masters in Business Administration from Southern New Hampshire University.