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TransMedics

Biotech & Life Sciences · Andover, United States · Founded 1998 · IPO 2019

TransMedics Group, Inc. operates as a commercial-stage medical technology company focused on transforming organ transplant therapy. The company was founded in 1998 by Dr. Waleed Hassanein, a cardiac surgeon who envisioned a better alternative to the decades-old standard of cold storage for organ preservation. Frustrated by losing potentially life-saving organs during his residency, Dr. Hassanein pioneered the concept of "living organ transplants," leading to the development of the company's core technology. His background includes a medical degree from Georgetown University and a cardiothoracic surgery research fellowship at a Harvard Medical School affiliate. The company's business is centered on its Organ Care System (OCS), a portable platform that keeps donor organs alive and functioning in a near-physiological state outside the body. This technology perfuses the organ with warm, oxygenated, and nutrient-enriched blood, allowing for continuous monitoring and assessment of its viability, a significant departure from static cold storage on ice. The OCS is the only platform with FDA approval for preserving and assessing donor hearts, lungs, and livers in the United States. Key regulatory milestones include FDA pre-market approval for the OCS Lung in 2018, the OCS Heart for donors after brain death (DBD) in 2021, and the OCS Liver in 2021, with an expanded indication for DCD hearts in 2022. TransMedics went public on May 2, 2019, trading on the Nasdaq under the ticker TMDX, which provided capital for growth and commercial expansion. TransMedics generates revenue through a model that analysts describe as a 'razor-and-blade' strategy. It involves the direct sale of the OCS console to transplant centers and hospitals, followed by recurring revenue from the sale of single-use proprietary disposable sets required for each transplant procedure. The company has expanded its business model to include a comprehensive service offering called the National OCS Program (NOP). The NOP provides an end-to-end solution, including trained organ procurement surgeons, clinical specialists, logistics, and transportation, leveraging a dedicated fleet of aircraft following the acquisition of Summit Aviation. This vertical integration streamlines the complex logistics of organ retrieval, enabling transplant centers to increase their geographic reach for donor organs and grow transplant volumes. Service revenue from the NOP has become a significant and growing portion of the company's overall income. Keywords: organ transplant technology, Organ Care System, OCS, ex-vivo organ perfusion, living organ preservation, warm perfusion, heart transplantation, lung transplantation, liver transplantation, organ viability assessment, National OCS Program, NOP, organ retrieval logistics, medical devices, surgical technology, Waleed Hassanein, donor after brain death, DBD, donation after circulatory death, DCD, transplant logistics, organ preservation, medical transport aviation, ex-vivo assessment, organ care

Valuation $3.05B
Revenue $733M
EBITDA $167M
Total funding $100–500M

Investors

17 investors on TransMedics's cap table

Sourced from Dealroom's funding history. Investor profile links are shown where available.

Series A 6 investors entered at this stage
Flagship Pioneering
Novel Bioventures
POSCO BioVentures
3i Group
Alta Partners
Sherbrooke Capital
Series B+ 11 investors entered at this stage
VantagePoint Capital Partners
Kleiner Perkins
Hercules Capital
Abrams Capital
BioStar Capital
Millhouse
Inbio Ventures
Lung Biotechnology
Pharmstandard
OrbiMed
Canadian Imperial Bank of Commerce

Global footprint

Where TransMedics has talent and traffic

Workforce by country
11 countries with
team presence
🇺🇸 United States94%
🇮🇹 Italy3.2%
🇩🇪 Germany1%
🇮🇳 India0.4%
🇵🇹 Portugal0.2%
Top 5 of 11 shown
Web traffic by country
32K monthly visits
across markets
🇺🇸 United States38.4%
🇮🇱 Israel13.1%
🇨🇦 Canada7.2%
🇬🇧 United Kingdom6.3%
🏳️ Korea6.3%
Top 5 markets shown

Talent graph

The shape of TransMedics's talent

Dealroom maps TransMedics's team person by person — pinpointing the standout operators and scoring them across the six dimensions investors underwrite. The counts and shape below are a public preview; the named individuals and exact scores live in the platform.

14 standout operatorsDealroom-flagged across the org
1 AI specialistpinpointed by name
706 employees mappedperson by person
DimensionScore
AI Talentlive Score hidden — book a demo
Engineering Score hidden — book a demo
Product Score hidden — book a demo
Go-to-market Score hidden — book a demo
Leadership Score hidden — book a demo
Research Score hidden — book a demo
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Source: Dealroom Talent Intelligence. Public profiles show counts and the team's shape only — request a demo for the named individuals, per-person seniority and tenure, and team benchmarks vs peers.

Patent intelligence

$119M patent portfolio · 29 active families

Estimated portfolio value
$119M
3.9% of market cap · 1.5× larger than top peer Genomic Health ($79M)
29 active patent families
Where TransMedics innovates BiologyBiomedical engineeringBreathingEx vivoGas exchange

Where TransMedics concentrates vs peers

Each axis is a top-10 topic across TransMedics and its closest peers. #1 = 100, #10 = 10, absent = 0.

Compare against

Source: Dealroom Patent Intelligence · Patsnap. Request a demo for the full per-sub-category breakdown, individual records, and quality-score history.

Market sentiment

What the market is saying about TransMedics

An AI-synthesized read of the highest-engagement posts about TransMedics on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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