United States · Series E startup

Who invested in iRhythm Technologies

11 rounds we have observed, with the 9 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

$123Mraised across 11 rounds since 2007, from 11 sources

$12MVenture$6.5MSeries B$10MVenture$15MSeries C$7.0MSeries C$12MGrowth$22MVenture$3.5MDebt$1.5MVenture$16MSeries D$17MSeries E
Latest round
Series E, $17MMay 2014
Biggest round
$22MVenture · Jan 2012
Investors
9
See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

20072008200920102011201220132014
$12MVenture$6.5MSeries B$10MVenture$15MSeries C$7.0MSeries C$12MGrowth$3.5MDebt$1.5MVenture$17MSeries E
First round
Venture, $12M
Feb 2007
Biggest round
$22M
Venture · Jan 2012
Usual gap between rounds
11 months
the median of 8

The rounds

  1. May 2014
    Series E$17M1 new1 returning

    From a historical funding recordSEC filing: $17M sold, first sale May 2014

  2. Apr 2013
    Series D$16M1 new4 returning

    Reported by finsmes.comSEC filing: $15M sold, first sale Mar 2013

  3. Nov 2012
    Venture$1.5M1 new

    Reported by live-pr.comSEC filing: $3.5M sold, first sale Nov 2012

  4. Nov 2012
    Debt$3.5M

    No investor was named in the report.

    Reported by sec.govSEC filing: $3.5M sold, first sale Nov 2012

  5. Jan 2012
    Venture$22M

    No investor was named in the report.

    Reported by sec.govSEC filing: $22M sold, first sale Apr 2011

  6. Jan 2012
    Growth$12M1 new3 returning

    From a historical funding recordSEC filing: $22M sold, first sale Apr 2011

  7. Oct 2011
    Series C$7.0M

    No investor was named in the report.

    Reported by fis.dowjones.comSEC filing: $10.0M sold, first sale Apr 2011

  8. May 2011
    Series C$15M1 new2 returning

    Reported by irhythmtech.comSEC filing: $6.7M sold, first sale Apr 2011

  9. May 2010
    Venture$10M1 new2 returning

    Reported by onbiovc.comSEC filing: $10M sold, first sale May 2010

  10. May 2009
    Series B$6.5M1 new2 returning

    Reported by venturedeal.comSEC filing: $6.5M sold, first sale Apr 2009

  11. Feb 2007
    Venture$12M2 new

    Reported by deals.venturebeat.com

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Series C2011Series C2011Growth2012Venture2012Debt2012Venture2012Series D2013Series E2014Synergy Life Science PartnerMohr Davidow VenturesNew Leaf Venture PartnersNorwest Venture PartnersStanford UniversityKaiser Permanente VenturesNovo Holdings A/SCalifornia HealthCare FoundationSt. Jude Medical

Everyone who backed them

Synergy Life Science PartnerGrowth equity6rounds
Mohr Davidow VenturesVC firm5rounds
New Leaf Venture PartnersVC firm3rounds
Norwest Venture PartnersVC firm2rounds
Stanford UniversityVC firm2rounds
Kaiser Permanente VenturesCorporate VC2rounds
Novo Holdings A/SGrowth equity1round
California HealthCare FoundationGovernment1round
St. Jude MedicalCorporate VC1round

Missing a round, or an investor who was in one? Tell us.

Quick answers about iRhythm Technologies

Who invested in iRhythm Technologies?

iRhythm Technologies's investors include Synergy Life Science Partner, Mohr Davidow Ventures, New Leaf Venture Partners, Norwest Venture Partners and Stanford University, and 4 more on record.

How much has iRhythm Technologies raised?

iRhythm Technologies has raised $123M across 11 rounds since 2007.

When did iRhythm Technologies last raise?

iRhythm Technologies's most recent round was a Series E of $17M in May 2014.

What was iRhythm Technologies's biggest round?

iRhythm Technologies's largest round on record is $22M (Venture), in Jan 2012.

Who backed iRhythm Technologies first?

iRhythm Technologies's first round on record, in Feb 2007, was backed by Mohr Davidow Ventures and Synergy Life Science Partner.

What stage is iRhythm Technologies at?

iRhythm Technologies's latest named round is a Series E, in May 2014.

Where is iRhythm Technologies based?

iRhythm Technologies is based in the United States.

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