TransMedics' long-term story stands despite a roughly 60% stock drop, because its organ transplant model is hard to replicate. It sells the machines and also handles retrieval and transport with its own aviation fleet and clinical teams. Margins are compressed by deliberate heavy investment, alongside regulatory issues and a lingering short report. About three-quarters of the TAM remains in the US, Europe is opening through Italy and PAD Aviation, and kidney transplants could double the TAM. x.com