OS Fund

General contacts
Investor type

VC

Founded

2014

AUM

-

Location

Chicago, Illinois, United States

Investment Ticket

$1-5 m

Investment Stage

Pre-seed Seed Series A

Region of investment

North America
Investor profile last updated: 16 August, 2026

Profile

OS Fund is a venture capital firm based in Chicago, Illinois, founded in 2014 by Bryan Johnson. The firm focuses on investing in platforms and enabling technologies that support inventors and scientists in building programmable-biology solutions. With a small team, OS Fund is dedicated to rewriting the operating systems of life to benefit humanity.

The firm invests in sectors such as genomics, synthetic biology, computationally derived therapeutics, advanced materials, and diagnostics. OS Fund typically invests in pre-seed, seed, and Series A stages, with an average check size of $1-2 million. Their investments are primarily focused in the United States.

Notable investments by OS Fund include Arzeda - biotechnology, Kenota Health - diagnostic equipment, A-Alpha Bio - drug discovery, Pre Brands - food products, and Strateos - laboratory services. These investments highlight OS Fund's commitment to advancing life sciences and technology.

Industry

Biotechnology Healthcare Services AI New materials

Contacts

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Investment-team contacts for OS Fund — including verified work emails and LinkedIn profiles — are available to Private Equity List subscribers.
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FAQs about OS Fund

OS Fund is a venture capital firm. It backs companies at Pre-seed, Seed and Series A, writing tickets of $1-5 m.
OS Fund is located in Chicago, Illinois, United States.
OS Fund was founded in 2014.
OS Fund invests in companies and startups in Biotechnology, Healthcare Services, AI, New materials.
OS Fund invests in companies and startups in North America.
OS Fund invests in companies and startups at Pre-seed, Seed, Series A.
OS Fund usually invests $1-5 m on average.
OS Fund can be reached through its website osfund.co, its LinkedIn page and its X account. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for OS Fund — 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.
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 OS Fund directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.
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.