TransMedics Group Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGM:TMDX Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
04 Mar 26	SellUS$178,497	Stephanie Lovell	Individual	1,193	US$149.62
02 Mar 26	SellUS$412,630	Nicholas Corcoran	Individual	2,966	US$139.12
02 Mar 26	SellUS$120,200	Anil Ranganath	Individual	864	US$139.12
02 Mar 26	SellUS$52,170	Gerardo Hernandez	Individual	375	US$139.12
04 Dec 25	SellUS$128,450	Gerardo Hernandez	Individual	920	US$139.62
17 Nov 25	BuyUS$1,000,350	Waleed Hassanein	Individual	8,775	US$114.00
07 Aug 25	BuyUS$1,982,121	Waleed Hassanein	Individual	16,875	US$118.68
09 Jun 25	SellUS$95,903	Anil Ranganath	Individual	686	US$139.80

Insider Trading Volume

Insider Buying: TMDX insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of TMDX?
Owner Type	Number of Shares	Ownership Percentage
State or Government	8,744	0.0229%
Individual Insiders	1,104,540	2.9%
Institutions	37,028,093	97.1%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 77.92% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
15.3%	BlackRock, Inc.	5,293,214	US$364.4m	-1.89%	no data
14.8%	FMR LLC	5,096,170	US$350.9m	0.38%	0.02%
10.7%	The Vanguard Group, Inc.	3,686,557	US$253.8m	2.25%	no data
4.4%	UBS Asset Management AG	1,520,316	US$104.7m	-8.2%	0.01%
3.82%	State Street Global Advisors, Inc.	1,319,479	US$90.8m	3.48%	no data
2.56%	Nomura Investment Management Business Trust	885,841	US$61.0m	6.44%	0.08%
2.43%	Geode Capital Management, LLC	839,155	US$57.8m	2.78%	no data
2.12%	Invesco Ltd.	733,255	US$50.5m	17%	0.01%
2.02%	Hood River Capital Management LLC	699,770	US$48.2m	1.36%	0.39%
1.66%	Emerald Advisers, LLC	572,117	US$39.4m	-1.57%	0.63%
1.63%	Waleed Hassanein	564,328	US$38.9m	-8.45%	no data
1.63%	Morgan Stanley	562,950	US$38.8m	5.23%	no data
1.59%	Eventide Asset Management, LLC	548,824	US$37.8m	0.1%	0.54%
1.53%	Goldman Sachs Asset Management, L.P.	528,672	US$36.4m	-19.9%	0.01%
1.49%	Dimensional Fund Advisors LP	516,679	US$35.6m	5.51%	no data
1.41%	Wellington Management Group LLP	486,473	US$33.5m	12.3%	no data
1.08%	Capital Research and Management Company	374,177	US$25.8m	64.5%	no data
1.03%	Citigroup Inc.	357,381	US$24.6m	396%	0.01%
1%	T. Rowe Price Group, Inc.	346,683	US$23.9m	-39.2%	no data
1%	Wasatch Advisors LP	346,144	US$23.8m	4.31%	0.08%
0.98%	Northern Trust Global Investments	338,159	US$23.3m	-0.31%	no data
0.98%	The Goldman Sachs Group, Inc.	337,610	US$23.2m	10.3%	0.01%
0.95%	Braidwell LP	329,391	US$22.7m	4.46%	0.79%
0.94%	Two Sigma Investments, LP	325,140	US$22.4m	-25.4%	0.02%
0.93%	Frontier Capital Management Co LLC	320,471	US$22.1m	5.85%	0.19%

Company Analysis and Financial Data Status

Data	Last Updated (UTC time)
Company Analysis	2026/05/22 11:32
End of Day Share Price	2026/05/22 00:00
Earnings	2026/03/31
Annual Earnings	2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

Package	Data	Timeframe	Example US Source ^*
Company Financials	10 years	Income statement Cash flow statement Balance sheet	SEC Form 10-K SEC Form 10-Q
Analyst Consensus Estimates	+3 years	Forecast financials Analyst price targets	Analyst Research Reports Blue Matrix
Market Prices	30 years	Stock prices Dividends, Splits and Actions	ICE Market Data SEC Form S-1
Ownership	10 years	Top shareholders Insider trading	SEC Form 4 SEC Form 13D
Management	10 years	Leadership team Board of directors	SEC Form 10-K SEC Form DEF 14A
Key Developments	10 years	Company announcements	SEC Form 8-K

^* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

TransMedics Group, Inc. is covered by 16 analysts. 11 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

Analyst	Institution
David Rescott	Baird
William Plovanic	Canaccord Genuity
Daniel Markowitz	Evercore ISI