TransMedics was founded by its current CEO Waleed Hassanein in 1998 and has been involved in organ transplants in some capacity since its inception. At the time of writing, the company’s market cap is around $3 billion.

TransMedics’ most important product is the patented OCS (Organ Care System), which is a portable, multi-organ normothermic preservation and assessment device that mimics human physiology, minimizes ischemia (lack of blood flow), and allows for organ optimization during transport. The device is the only FDA-approved platform suitable for the transplantation of several different organs. Additionally, starting from Q4 2023, the company launched the NOP (National OCS Program), which essentially means the company has offered its own transportation services (air and ground) for organ transport. Previously, the company used third-party providers, which proved to be expensive, unreliable, and even dangerous. With this aviation service, the company can provide both organ preservation and transportation.
The company just released its Q4 2023 report, which was their first quarter with a positive net income (GAAP). Revenue grew to $81.2 million, up +159% y/y and 22% q/q. In terms of organ volume, this meant 1,000 → 2,300. The company aims to reach an annual rate of 10,000 organs by 2028. 97% of revenue comes from their transplant business, and about 95% of the company’s revenue comes from the United States. The company works with several organ transplants: liver, heart, and lungs. Of these, by far the largest “sector” is the liver, accounting for 73% of total transplant revenue, heart 23%, and the rest, 4%, from lungs. Revenue outside the U.S. grew +51% y/y but indeed only accounts for about ~5% of revenue.
The company also has a service business, which includes additional amounts charged for surgical procurement and organ management, as well as amounts charged for organ procurement and transplant logistics, including air and ground services. During 2023, the company acquired 11 aircraft to provide its own “courier service” for organ transport; they intend to expand this number to 15-20 by H2 2025. Previously, transplant centers and TransMedics had to rely on charter flights or smaller local operators that were not available 24/7/365, unlike TransMedics’ aircraft. This service provides at least a slight competitive advantage. During Q4, the company was able to perform 35% of flights with its own aircraft, and the goal is to increase this share to 80%.
Regarding market shares: according to the company, they have a 17% market share in liver transplant volumes, a 16% market share in hearts, and a 4% market share in lungs. According to the company, there is clear room for growth here, and their innovative technology has even expanded these markets by increasing the probability of successful transplantation. The service business accounted for 39% of transplant-related revenue. For the full year, the service business gross margin was 29% and the product business gross margin was 77%.
Guidance provided by the company for 2024:
- Revenue $360-370 million (49%-53% growth y/y)
- Gross margin 63%-64% (64% in 2023).
Traditionally, the guidance provided by the company has been very conservative and is raised throughout the year.
If the company seems interesting, I recommend reading/listening to their latest quarterly report, where you can find a lot of information related to the company.










