TransMedics is a medical technology company that develops and commercializes the Organ Care System (OCS), a portable warm perfusion platform that keeps donor organs viable and functioning during preservation and transport for heart, lung, and liver transplantation—addressing the limitations of conventional cold storage which leads to low utilization rates and ischemic injury. The company generates recurring revenue from sales of organ-specific single-use perfusion sets and solutions required for each transplant procedure, as well as from its National Organ Program, an integrated service offering that handles organ procurement, OCS management, and logistics including dedicated aviation and ground transportation for transplant centers. Customers are primarily high-volume transplant centers at leading academic medical centers, with reimbursement flowing through existing Medicare and commercial transplant billing mechanisms that cover organ acquisition costs.