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Brain Co.

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AI-powered neurotechnology for prosthetics and cognitive training

San Francisco, United StatesFounded 2025Other B2B Software
Valuation $100–250M Last recorded · 2025
Headcount 100–500 Current team size
Total funding $10–50M Disclosed equity funding
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About Brain Co.

BrainCo is a neurotechnology company that develops brain-computer interface (BCI) products. Founded in 2015 by Bicheng Han while he was a PhD student at Harvard University's Center for Brain Science, the company was incubated in the Harvard Innovation Lab. Han, who has a background in medical equipment development and neuroscience research, also founded BrainRobotics, a semi-nonprofit project under BrainCo dedicated to creating smart prosthetics.

The company's headquarters moved from Somerville, Massachusetts, to Hangzhou, China in 2018, while maintaining an office in the US. BrainCo develops non-invasive BCI technology that translates brain signals (EEG) and muscle signals into commands to control external devices. Its business operates across several fields, including medical devices, wellness, and education.

One of its primary product lines is advanced prosthetic limbs. The BrainRobotics hand, which received FDA certification in 2022, uses AI algorithms to decode muscle signals, allowing users to control individual fingers and perform complex tasks like writing or playing the piano. This product was named one of Time Magazine's top 100 inventions of 2019. The company aims to offer these high-functioning prosthetics at a lower price point than many alternatives on the market.

BrainCo also produces EEG headbands for various applications. Its initial product, the Focus 1 headband, was designed to monitor students' attention levels in classrooms. This product line has since been rebranded and expanded into the wellness sector with devices like FocusCalm, which uses neurofeedback games and exercises to help users reduce stress and improve focus. Other products include Eassleep, a headband for sleep improvement, and OxyZen, which monitors vital signs and brain waves to provide tailored meditation.

The company has raised funds from investors including Hantan Capital, Boston Angel Club, and China Electronics Corporation.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2025
Headquarters
San Francisco, United States
Employees
131
Open positions
18
Dealroom signal
0.0/100
Industry
Jobs Recruitment, Enterprise Software
Sector
Other B2B Software
Client focus
b2b

Funding history

1 recorded event

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES A✓Equity / VC Sep 2025 $30M $120M Patrick Collison · Nikesh Arora · Gil Capital · Affinity Partners ↗
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Growth signals

Brain Co. website traffic

Latest recorded traffic for Brain Co. is 34K monthly website visits, up 41.7% over the last three months.

Latest monthly visits34K 3-month web change+41.7%
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Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

7 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A6 investors entered at this stage

  • Gil Capital
  • Affinity Partners
  • Patrick Collison
  • Nikesh Arora
  • Brian Armstrong
  • Reid Hoffman

Other known investors1 additional known investor

  • Neo vc
Team profiled 15 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 4 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
9 countries with
team presence
🇺🇸 United States79.2%
🇦🇪 United Arab Emirates11.5%
🇬🇧 United Kingdom2.3%
🇶🇦 Qatar1.5%
🇸🇦 Saudi Arabia1.5%
Top 5 of 9 shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Brain Co. on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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