R42

Emerging manager

Built from this firm's Form D filings. The firm files no SEC adviser report.

Website: https://www.r42group.com
HQ: CA

R42 actively invents and finances deep science ventures. The firm also has an entrepreneur in residence, Dr. Artem Trotsyuk, who is a bioengineer and computer scientist by training.

New fund likely raising soon

The firm's newest fund is 4 to 7 years past its first sale and no newer Form D has been filed.

01 · Says / Does

Tag	Says	Does
Stages	Pre-seed, Seed, Series A, Series B, Growth	Not enough dated deals
Sectors	AI applications, Biotech	Not enough dated deals
Regions	Not stated	Not enough dated deals

Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.

02 · Fund history

Fund	Year	Size	Status
R42 Fund 2, LP R42 invents and finances deep science ventures from pre-seed through growth stage, focusing on AI, biotech and longevity. It also works with early-stage founders from the idea stage and invests directly in companies. Inferred from the firm's website	2022	$13M to $50M (Form D)	Late investment period
R42 Fund 1, LP	2020	$3.56M to $20M (Form D)	Follow-ons only

03 · People across funds

Ronjon Nag, General Partner
R42 Fund 2, LP (Named on Form D); R42 Fund 1, LP (Named on Form D)
Dr. Artem Trotsyuk, ENTREPRENEUR IN RESIDENCE
R42 Fund 2, LP (Team); R42 Fund 1, LP (Team)

04 · Recent deals

No dated deals found yet.

05 · Latest from the firm

No news from the firm's website yet.

06 · Sources

Fund dates and sizes are from SEC Form D filings.

Last verified: Oct 28, 2026