Who invested in BrainCo

2 rounds we have observed, with the 7 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.

B2CBiotech

Raised 10 months ago

Funding summaryUpdated 26 Oct 2026

$292Mraised across 2 rounds since 2016, from 2 sources

$5.5MSeries A$286MVenture

Latest round: Venture, $286MJan 2026
Step-upi: 52.1×
Investors: 7

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.

20182020202220242026

$5.5MSeries A$286MVenture

First round: Series A, $5.5M
Biggest round: $286M
Between rounds: 9.1 years

The rounds

Jan 2026
Venture$286M4 new
Source recorded
Dec 2016
Series A$5.5M3 new
- Boston Angel Club
- Han Tan Capital
- Wandai Capital
Reported by FinSMEs

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 A2016Venture2026

MassChallenge

IDG Capital

CDH InvestmentsWalden InternationalBoston Angel ClubHan Tan CapitalWandai Capital

Everyone who backed them

MassChallengeAccelerator1round

IDG CapitalPrivate equity1round

CDH InvestmentsPrivate equity1round

Walden InternationalVC firm1round

Boston Angel Clubno record of our own yet1round

Han Tan Capitalno record of our own yet1round

Wandai Capitalno record of our own yet1round

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

Also claim to have backed them

These 2 firms list BrainCo 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.