United States · Venture startup
9 rounds we have observed, with the 13 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.
Funding summaryUpdated 26 Oct 2026
$158Mraised across 9 rounds since 2004, from 9 sources
Each circle is a round, placed by date and sized by amount. The line above is the running total.
No investor was named in the report.
From a historical funding recordSEC filing: $500K sold, first sale Sept 2015
No investor was named in the report.
From a historical funding recordSEC filing: $20M sold, first sale May 2015
No investor was named in the report.
Reported by masshightech.comSEC filing: $36M sold, first sale Nov 2012
No investor was named in the report.
Reported by masshightech.comSEC filing: $5.9M sold, first sale Aug 2011
Kleiner Perkins Caufield & Byers
Foundation Capital
3i Group
VantagePoint Capital Partners
Alta Partners
Tudor Investments
CB Health Ventures
Sherbrooke CapitalReported by onbiovc.comSEC filing: $35M sold, first sale Feb 2010
No investor was named in the report.
Reported by sec.govSEC filing: $3.6M sold, first sale Nov 2009
No investor was named in the report.
Reported by masshightech.comSEC filing: $2.5M sold, first sale Jul 2009
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
3i GroupAlta PartnersFlagship Pioneering, LLCCB Health VenturesPOSCO BioVenturesSherbrooke CapitalVantagePoint Capital PartnersTudor InvestmentsSagamore BioventuresKleiner Perkins Caufield & ByersMissing a round, or an investor who was in one? Tell us.
TransMedics's investors include 3i Group, Alta Partners, Flagship Pioneering, LLC, CB Health Ventures and POSCO BioVentures, and 8 more on record.
TransMedics has raised $158M across 9 rounds since 2004.
TransMedics's most recent round was a Venture of $500K in Sept 2015.
TransMedics's largest round on record is $36M (Venture), in Nov 2012.
TransMedics's first round on record, in Jan 2004, was backed by 3i Group, Alta Partners and Flagship Pioneering, LLC and 5 others.
TransMedics's latest named round is a Venture, in Sept 2015.
TransMedics is based in the United States.
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United States ·