TransMedics Group, Inc.

Our corporate headquarters and manufacturing and clinical training facilities are located in Andover, Massachusetts, where we lease 135,199 square feet of space, including a 10,500 square foot laboratory and training facility and a 7,900 square foot ISO Class 7 cleanroom facility. The leases for these facilities expire on December 31, 2027 with an option to extend the term beyond the expiration date for one additional period of five years. On January 8, 2026, we entered into a lease agreement with BioMed Realty for the lease of approximately 498,286 square feet of space located at 188 Assembly Park Drive, Somerville, Massachusetts for our principal executive offices and for research and development, laboratory, manufacturing and assembly, vivarium, office and related uses. The premises is expected to serve as our new headquarters and we expect to transition certain of our operations on or before January 1, 2028, ultimately replacing our existing headquarters in Andover, Massachusetts. Base rent begins to accrue in the first quarter of 2028. The lease will expire one hundred ninety-two (192) months from the date base rent begins to accrue, unless earlier terminated. In connection with our acquisition of Summit, we acquired a 20-year operating lease with one 10-year renewal option, for space at the Bozeman Yellowstone International Airport in Bozeman, Montana where we constructed a commercial aircraft hangar that we use for our flight school aircraft and office space for personnel located in Bozeman. We have a designated maintenance hub for our aircraft in Dallas, Texas under a lease that expires in 2027, subject to certain early termination provisions. We also lease office space at various locations in the United States for our NOP and hangar space for our aircraft under both short-term and long-term leases. We have additional distribution, commercial and research and development operations in Europe.

We believe that these facilities are adequate to meet our current needs, although we may seek to negotiate new leases or evaluate additional or alternate space for our operations. We believe appropriate alternative space would be readily available on commercially reasonable terms.