R42 Group

Q: When was R42 Group last fund created?

R42 Group last fund was created/launched in 2021-12-14.

General contacts

Investor type

VC / Family office / Fund of funds

Founded

2004

AUM

$100 M

Location

Stanford, California, United States

Investment Ticket

$1-5 m

Investment Stage

Seed Pre-seed Series A Series B Late Stage (Series C+)

Region of investment

North America Europe

Investor profile last updated: 16 August, 2026

Profile

R42 Group is a venture capital firm based in Silicon Valley. It was founded by Dr. Ronjon Nag, an industry veteran recognized for his contributions to AI and engineering entrepreneurship. The firm has a focus on AI, deep science, and biotechnology, leveraging deep expertise in these areas to build and finance innovative ventures. Their team comprises experienced investors and industry experts who actively participate in the growth and development of their portfolio companies. R42 Group stands out for its commitment to advancing scientific discovery and its support for early-stage companies in cutting-edge fields.

R42 Group invests in a range of technology sectors, including AI, biotechnology, and technology-related ventures. They offer capital support from pre-seed stages through to growth stages, affirming their dedication to nurturing companies at various stages of development. The firm operates primarily in North America, with a focus on fostering groundbreaking innovations within the technology sector.

Some of R42 Group's notable investments include Hayden AI, a leader in AI and geospatial analytics, which has raised $53M in a Series B round. The firm's portfolio emphasizes ventures that are at the intersection of AI, biotechnology, and other transformational technologies, showcasing their role as substantial investors in the evolving landscape of modern technology.

Industry

HealthTech Energy Technology AI Software Robotics Healthcare Services Biotechnology Life Sciences Internet of Things (IoT) Machine Learning (ML) Fintech Deeptech

R42 Group Funds

Name	Type	Industry	Stage	Region	Size	AUM	Launch date
R42 Fund 1	Venture Capital (VC)	Fintech Healthcare Services Robotics AI Deeptech Machine Learning (ML)	Seed Series A	North America Europe Asia	$5-10 m	$100 M	December 2021

Contacts

Name

Title

Social Networks

Dr. Ronjon Nag Founder and Managing Partner

Founder and Managing Partner

r•••@•••

Anastasiya Giarletta Principal

Principal

a•••@•••

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Investment-team contacts for R42 Group — including verified work emails and LinkedIn profiles — are available to Private Equity List subscribers.
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Contacts sourced from the firm's website and LinkedIn, re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

FAQs about R42 Group

Is R42 Group a venture capital or private equity firm?

R42 Group is a venture capital firm that also operates as a family office and fund of funds. It backs companies at Seed, Pre-seed, Series A, Series B and Late Stage (Series C+), writing tickets of $1-5 m.

Where is R42 Group located?

R42 Group is located in Stanford, California, United States.

When was R42 Group founded?

R42 Group was founded in 2004.

What sectors and industries does R42 Group invest in?

R42 Group invests in companies and startups in HealthTech, Energy, Technology, AI, Software, Robotics, Healthcare Services, Biotechnology, Life Sciences, Internet of Things (IoT), Machine Learning (ML), Fintech, Deeptech.

What is R42 Group geographical focus of investments?

R42 Group invests in companies and startups in North America, Europe.

At what stages of companies and startups does R42 Group typically invest in?

R42 Group invests in companies and startups at Seed, Pre-seed, Series A, Series B, Late Stage (Series C+).

What is the usual amount of R42 Group investment?

R42 Group usually invests $1-5 m on average.

What is the amount of assets of under management (AUM) for R42 Group?

R42 Group has around $100m assets under management.

When was R42 Group last fund created?

R42 Group last fund was created/launched in 2021-12-14

What are the contacts of R42 Group?

R42 Group can be reached through its website r42group.com, its LinkedIn page and its X account. Its general enquiries address is [email protected]. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for R42 Group — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.

Can I access R42 Group data via API or MCP?

Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query R42 Group directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.

When was the R42 Group profile last updated?

Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 16 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.