United States · 
Who invested in Eleven Biotherapeutics?
Eleven Biotherapeutics's investors include Flagship Pioneering, LLC, Third Rock Ventures, JAFCO and JAFCO Asia.
20102011201220132014
$35MSeries A$20MSeries A$20MRoundUnited States · Funded startup
Who invested in Eleven Biotherapeutics
3 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.
Funding summaryUpdated 26 Oct 2026
$75Mraised across 3 rounds since 2010, from 3 sources
$35MSeries A$20MSeries A$20MRound
- Latest round
- Round, $20MNov 2014
- Biggest round
- $35MSeries A · Mar 2010
- Investors
- 4
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $35M Mar 2010
- Biggest round
- $35M Series A · Mar 2010
- Usual gap between rounds
- 2.6 years the median of 2
The rounds
- Nov 2014Round$20M
No investor was named in the report.
From a historical funding recordSEC filing: $20M sold, first sale Dec 2014
- May 2012Series A$20M2 new2 returning
Reported by masshightech.com
- Mar 2010Series A$35M2 new
Reported by onbiovc.comSEC filing: $4.5M sold, first sale Feb 2010
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.
Everyone who backed them
Flagship Pioneering, LLCVC firm2rounds
Missing a round, or an investor who was in one? Tell us.
Quick answers about Eleven Biotherapeutics
How much has Eleven Biotherapeutics raised?
Eleven Biotherapeutics has raised $75M across 3 rounds since 2010.
When did Eleven Biotherapeutics last raise?
Eleven Biotherapeutics's most recent round was an Undisclosed round of $20M in Nov 2014.
What was Eleven Biotherapeutics's biggest round?
Eleven Biotherapeutics's largest round on record is $35M (Series A), in Mar 2010.
Who backed Eleven Biotherapeutics first?
Eleven Biotherapeutics's first round on record, in Mar 2010, was backed by Flagship Pioneering, LLC and Third Rock Ventures.
What stage is Eleven Biotherapeutics at?
Eleven Biotherapeutics's latest named round is an Undisclosed round, in Nov 2014.
Where is Eleven Biotherapeutics based?
Eleven Biotherapeutics is based in the United States.
Find investors like these
Search every investor by what they have actually funded, then narrow to your stage and market. Free.