Who invested in PatientsLikeMe

5 rounds we have observed, with the 4 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.

BiotechHealthcare

Funding summaryUpdated 26 Oct 2026

$127Mraised across 5 rounds since 2007, from 5 sources

$5.0MSeries A$8.0MVenture$2.0MVenture$12MVenture$100MRound

Latest round: Round, $100MJan 2017
Step-upi: 8.3×
Investors: 4

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.

200720092011201320152017

$5.0MSeries A$8.0MVenture$2.0MVenture$12MVenture$100MRound

First round: Series A, $5.0M
Biggest round: $100M
Usual gap between rounds: 3.5 years

The rounds

Jan 2017
Round$100M2 new
- Invus
- iCarbonX
Reported by FinSMEs
Jun 2013
Venture$12M
No investor was named in the report.
Reported by sec.govSEC filing: $12M sold, first sale Aug 2012
Aug 2012
Venture$2.0M
No investor was named in the report.
Reported by masshightech.comSEC filing: $2.0M sold, first sale Aug 2012
Aug 2010
Venture$8.0M
No investor was named in the report.
Reported by masshightech.comSEC filing: $8.0M sold, first sale Aug 2010
Feb 2007
Series A$5.0M2 new
- CommerceNet
- Collaborative Seed & Growth Partners
Reported by patientslikeme.com

Founders and team

From the SEC filings it signed: 2 on the team.

Benjamin HeywoodExecutive Officer, Directori
Martin A. CoulterExecutive Officer, Directori

On the board, as filediJames HeywoodJay M. TenenbaumJonathan M. WhitePhilippe AmouyalWalter A. Winshall

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 A2007Venture2010Venture2012Venture2013Round2017

Invus

CommerceNetCollaborative Seed & Growth Partners

iCarbonX

Everyone who backed them

InvusPrivate equity1round

CommerceNetVC firm1round

Collaborative Seed & Growth PartnersVC firm1round

iCarbonXVC firm1round

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

Also claim to have backed them

These 2 firms list PatientsLikeMe as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.