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TransMedics Group (TMDX) Stock Price, News & Analysis

TMDX NASDAQ
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Price Move History

Daily moves over 5%
36 252 sessions, November 7, 2025 to November 9, 2026
Largest daily move
+27.9% close of November 6, 2026
1-year change
-21.3% closing prices, November 7, 2025 to November 9, 2026
1-month change
+20.4% closing prices, October 9, 2026 to November 9, 2026

Company Description

TransMedics Group, Inc. (Nasdaq: TMDX) is a commercial-stage medical technology company focused on transforming organ transplant therapy for patients with end-stage lung, heart, and liver failure. The company develops and commercializes technologies designed to preserve organ quality, assess organ viability, and potentially increase the utilization of donor organs for transplantation. TransMedics is described in its public disclosures as the world's leader in portable extracorporeal warm perfusion and assessment of donor organs for transplantation.

Headquartered in Andover, Massachusetts, TransMedics was founded to address the unmet need for more and better organs for transplantation. The company trades on the Nasdaq Global Market under the symbol TMDX. Its work sits at the intersection of medical technology, organ preservation, and specialized logistics for transplant centers and procurement organizations.

Organ Care System (OCS) Platform

According to company materials, TransMedics has developed the Organ Care System (OCS), a portable organ perfusion, optimization, and monitoring system. The OCS utilizes proprietary and customized technology to replicate near-physiologic conditions for donor organs outside of the human body. The platform is designed to perfuse donor organs with warm, oxygenated, nutrient-enriched blood while maintaining the organs in a living, functioning state.

The OCS platform is described as the only FDA-approved, portable, multi-organ, warm perfusion technology platform. TransMedics reports that its OCS Lung, Heart, and Liver Systems are CE Marked. These systems are intended to help transplant teams preserve organ quality and assess organ viability prior to transplant, with the goal of treating end-stage heart, lung, and liver failure.

National OCS Program (NOP) and Service Offering

Beyond devices, TransMedics has developed the National OCS Program (NOP). Company disclosures describe NOP as an innovative turnkey solution that provides an end-to-end service offering delivering organs on-demand directly to transplant centers. The program leverages the proprietary OCS technology, trained organ procurement surgeons and clinical specialists, and a specially designed and dedicated air and ground transport logistics network.

Through this model, TransMedics aims to provide technological, clinical, and logistical support to transplant centers, procurement organizations, and surgical teams. The company has indicated that increased utilization of the OCS, particularly in liver and heart, and related NOP service revenue are important drivers of its business.

Integrated Logistics and Aviation Fleet

TransMedics has reported that it uses third parties to transport donor organs and medical personnel for its NOP and is also building its own logistics capabilities. The company has disclosed the acquisition of a fleet of fixed-wing aircraft through its subsidiary TransMedics, Inc. These aircraft are intended to transport donor organs as part of the services offered under the National OCS Program.

In an SEC filing, TransMedics stated that it considers the acquisition of these aircraft to be a series of related transactions to build a fleet for use in the NOP. The company has also highlighted the role of its aviation fleet in supporting the expansion and utilization of its services.

International Initiatives and Collaboration in Italy

TransMedics has announced a strategic collaboration with Mercedes-Benz Group AG to deploy a first-of-its-kind fleet of modern, purpose-built Mercedes-Benz V-Class vehicles dedicated exclusively to organ transportation across Italy. This collaboration supports the company’s broader commercial strategy to replicate its U.S. NOP in Europe by building a dedicated air and ground logistics network that complements the OCS perfusion platform and clinical services.

As part of this initiative, TransMedics plans to deploy and staff dedicated Mercedes-Benz V-Class vehicles across Italian NOP hubs in Milan, Rome, Padua, and Bari. Each hub is expected to be equipped with OCS Lung, Heart, and Liver Systems and staffed by a team of clinical perfusionists. The Italian National Command Center is described as operating from a TransMedics NOP hub in Santa Giulia, Milan.

Headquarters and Campus Expansion

TransMedics has announced the signing of a long-term lease for a new global headquarters at Assembly Innovation Park in Somerville, Massachusetts, along with the acquisition of an adjacent land parcel to create an integrated campus environment. The company states that this new headquarters is intended to bring together corporate, research, development, and advanced manufacturing capabilities in a purpose-built facility.

The expansion is characterized by TransMedics as a strategic step to support operational growth and to position the company within the Greater Boston life sciences ecosystem. The company has indicated that this move is aligned with its mid- and long-term growth initiatives in organ transplant technologies and services.

Business Model and Revenue Drivers

Available disclosures indicate that TransMedics generates revenue from net product revenue related to its OCS systems and from service revenue related to its National OCS Program and associated logistics and clinical services. The company has highlighted the increase in utilization of the OCS, particularly in liver and heart indications through the NOP, as a key contributor to its revenue growth.

TransMedics also notes that it depends on the success of the OCS platform and its ability to expand access to the OCS through the NOP. The company references the need to scale its manufacturing and sterilization capabilities to meet increasing demand for its products, and to maintain regulatory approvals or clearances for its OCS products in the United States, the European Union, and other select jurisdictions worldwide.

Regulatory and Risk Considerations

In its forward-looking statements and risk factor discussions, TransMedics identifies several areas of focus: sustaining profitability, managing existing and future indebtedness, scaling manufacturing and logistics, and maintaining regulatory approvals for OCS products and aviation transportation services. The company also notes risks related to healthcare policy changes, market acceptance of the OCS, performance of third-party suppliers, information technology security, and competition from other products or procedures.

TransMedics emphasizes the importance of educating patients, surgeons, transplant centers, and public and private payors about the benefits offered by the OCS. It also highlights the need to protect and enforce its intellectual property rights relating to the OCS and to avoid infringing the rights of third parties.

Position Within the Medical Technology and Transplant Ecosystem

Within the surgical and medical instrument manufacturing industry, TransMedics occupies a specialized niche focused on organ transplant preservation, assessment, and logistics. Its combination of a portable warm perfusion platform, clinical services, and dedicated transportation network is presented as a coordinated approach to addressing limitations of traditional cold storage organ preservation.

According to its public statements, the company’s technologies and services are aimed at increasing donor organ utilization and improving access to transplantation for patients with end-stage heart, lung, and liver failure. TransMedics’ participation in healthcare and investor conferences, as well as its collaborations in the life sciences and transportation sectors, underscore its focus on organ transplant therapy and related services.

Stock Performance

$89.74
-4.32%
-4.06
Last updated: November 10, 2026 at 14:51
-21.3%
Performance 1 year

TransMedics Group (TMDX) closed at $93.79 on November 9, 2026. Over the past 12 months, the price has lost 21.3%.

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TMDX Metrics & Rankings

Price returns through November 9, 2026. Month and year figures include the first trading day. Ranking links may use different dates.

Latest News

TransMedics Group has 10 recent news articles, with the latest published 5 days ago. Of the recent coverage, 3 articles coincided with positive price movement and 7 with negative movement. Key topics include earnings, conferences, earnings date. View all TMDX news →

Insider Radar

Net Buyers
90-Day Summary
1,336
Shares Bought
0
Shares Sold
1
Transactions
Most Recent Transaction
Weill David (Director) bought 1,336 shares @ $81.63 on September 11, 2026

Insider buying activity at TransMedics Group over the past 90 days may reflect management confidence in the company's direction. Institutional investors and analysts often monitor insider purchases as a potential bullish indicator for the stock.

Based on SEC Form 4 filings over the last 90 days.

Financial Highlights

TransMedics Group generated $605.5M in revenue in FY2025, retaining a 59.9% gross margin, operating income reached $108.6M (17.9% operating margin), and net income was $190.3M, reflecting a 31.4% net profit margin. Diluted earnings per share stood at $4.87. The company generated $192.8M in operating cash flow. The current ratio was 7.14, measuring current assets divided by current liabilities.

$605.5M
Revenue (FY2025)
$190.3M
Net Income (FY2025)
$192.8M
Operating Cash Flow

Upcoming Events

NOV
10
November 10, 2026 Marketing

Stifel fireside chat

Fireside chat at Stifel investor conference in New York on Nov 10; live and archived webcast on company investor website.
NOV
17
November 17, 2026 Marketing

Jefferies fireside chat

Fireside chat at Jefferies investor conference (London) on Nov 17; live and archived webcast on company investor website.
DEC
01
December 1, 2026 Marketing

Piper Sandler fireside

Fireside chat at Piper Sandler investor conference in New York on Dec 1; live and archived webcast on company investor website.
DEC
31
December 31, 2026 Financial

Fiscal year-end

TransMedics Group, Inc. fiscal year-end 2026; company raised full-year revenue guidance to $764–$774M including PAD Aviation.
JUL
29
July 29, 2027 - July 29, 2030 Corporate

Option vesting period

18,762 options granted 2026-07-29; 25% vests 2027-07-29, remaining 75% vests monthly through 2030-07-29; $78 exercise price.
JUL
29
July 29, 2027 - July 29, 2030 Corporate

RSU vesting schedule

12,414 RSUs granted 2026-07-29; 25% vests on each anniversary 2027-07-29, 2028-07-29, 2029-07-29, 2030-07-29.
OCT
28
October 28, 2027 Corporate

Option 1st-year vesting

25% of inducement stock options granted Oct 28, 2026 vest on Oct 28, 2027; vesting requires continued service; applies to CFO and employees.
OCT
28
October 28, 2027 - October 28, 2030 Corporate

Options remaining vesting

Remaining 75% of options vest monthly over the three-year period from Oct 28, 2027 through Oct 28, 2030, subject to service.
OCT
28
October 28, 2027 - October 28, 2030 Corporate

RSU anniversary vesting

47,924 RSUs granted Oct 28, 2026 vest 25% on each employment anniversary from Oct 28, 2027 through Oct 28, 2030; service required.
JAN
2028
January 2028 Operations

Relocation to Somerville HQ

Move to new global HQ at Assembly Innovation Park, Somerville; houses R&D and advanced manufacturing
DEC
22
December 22, 2035 Corporate

Option expiration

10-year term from inducement grant dated 2025-12-22; options expire on this date

TransMedics Group has 11 upcoming scheduled events. The next event, "Stifel fireside chat", is scheduled for November 10, 2026 (today). 1 of them is a financing or capital event, such as a dividend or a debt maturity. Investors can track these dates to stay informed about potential catalysts that may affect the TMDX stock price.

Short Interest History

Last 12 Months

Short interest in TransMedics Group (TMDX) currently stands at 8.8 million shares, up 2.5% from the previous reporting period, representing 26.2% of the float. Since November 2025, short interest has increased by 27.8%.

Days to Cover History

Last 12 Months

Days to cover for TransMedics Group (TMDX) currently stands at 9.9 days, down 24.3% from the previous period. The ratio is the reported short interest divided by the average daily trading volume. Across the settlements charted above, it has ranged from 3.4 to 14.1 days.

TMDX Company Profile & Sector Positioning

TransMedics Group (TMDX) operates in the Medical Devices industry within the broader Healthcare sector and is listed on the NASDAQ.

Investors comparing TMDX often look at related companies in the same sector, including Axogen, Inc. (AXGN), iRhythm Holdings, Inc. (IRTC), Neogen Corp (NEOG), Integer Holdings Corporation (ITGR), and UFP Technologies Inc (UFPT). Comparing financial metrics, valuation ratios, and stock performance across these peers can help investors evaluate TMDX's relative position within its industry.

Frequently Asked Questions

The current stock price of TransMedics Group (TMDX) is $89.74 as of November 10, 2026.

The market cap of TransMedics Group (TMDX) is approximately $3.1B. Learn more about what market capitalization means .

The FY2025 revenue of TransMedics Group (TMDX) is $605.5M, from its most recent completed fiscal year.

The FY2025 net income of TransMedics Group (TMDX) is $190.3M, from its most recent completed fiscal year.

The diluted earnings per share (EPS) of TransMedics Group (TMDX) is $4.87 for FY2025, its most recent completed fiscal year. Learn more about EPS .

The operating cash flow of TransMedics Group (TMDX) is $192.8M for FY2025, its most recent completed fiscal year. Learn about cash flow.

The net profit margin of TransMedics Group (TMDX) is 31.4% for FY2025, its most recent completed fiscal year. Learn about profit margins.

The operating profit margin of TransMedics Group (TMDX) is 17.9% for FY2025, its most recent completed fiscal year. Learn about operating margins.

The gross profit margin of TransMedics Group (TMDX) is 59.9% for FY2025, its most recent completed fiscal year. Learn about gross margins.

The current ratio of TransMedics Group (TMDX), current assets divided by current liabilities, was 7.14 at the end of FY2025, its most recent completed fiscal year. Learn about liquidity ratios.

The gross profit of TransMedics Group (TMDX) is $362.8M for FY2025, its most recent completed fiscal year.

The operating income of TransMedics Group (TMDX) is $108.6M for FY2025, its most recent completed fiscal year. Learn about operating income.

TransMedics Group, Inc. is a commercial-stage medical technology company focused on transforming organ transplant therapy for patients with end-stage lung, heart, and liver failure. It develops and commercializes technologies and services to preserve organ quality, assess organ viability, and potentially increase the utilization of donor organs for transplantation.

The Organ Care System (OCS) is TransMedics’ portable organ perfusion, optimization, and monitoring platform. It uses proprietary technology to replicate near-physiologic conditions for donor organs outside the human body by perfusing them with warm, oxygenated, nutrient-enriched blood and maintaining them in a living, functioning state.

Company disclosures state that the OCS platform is a portable, multi-organ, warm perfusion technology platform. The OCS Lung, Heart, and Liver Systems are CE Marked, and the platform is described as the only FDA-approved portable multi-organ warm perfusion technology platform.

The National OCS Program (NOP) is described by TransMedics as an innovative turnkey solution that provides an end-to-end service delivering organs on-demand directly to transplant centers. It leverages the company’s OCS technology, trained organ procurement surgeons and clinical specialists, and a dedicated air and ground transport logistics network.

TransMedics reports revenue from net product revenue related to its Organ Care System devices and from service revenue related to its National OCS Program and associated logistics and clinical services. Increased utilization of the OCS, particularly in liver and heart through the NOP, has been identified as a key driver of revenue growth.

TransMedics states that it is headquartered in Andover, Massachusetts. The company has also announced plans for a new global headquarters at Assembly Innovation Park in Somerville, Massachusetts, as part of an integrated campus expansion.

TransMedics Group, Inc. common stock is registered on the Nasdaq Global Market under the trading symbol TMDX, as disclosed in its SEC filings.

TransMedics has acquired a fleet of fixed-wing aircraft through a subsidiary to transport donor organs as part of the services offered under its National OCS Program. The company has also announced a collaboration with Mercedes-Benz Group AG to deploy dedicated Mercedes-Benz V-Class vehicles for organ transportation across Italian NOP hubs.

TransMedics reports that the OCS platform is the only FDA-approved, portable, multi-organ, warm perfusion technology platform. It also states that the OCS Lung, Heart, and Liver Systems are CE Marked. The company emphasizes the importance of maintaining regulatory approvals and clearances in the United States, the European Union, and other select jurisdictions.

In its forward-looking statements, TransMedics notes risks such as fluctuations in financial results, dependence on the success and market acceptance of the OCS, the need to scale manufacturing and logistics, maintaining regulatory approvals, healthcare policy changes, performance of suppliers and transportation partners, information technology security, and competition from other products or procedures.