OS Fund is a venture capital firm. Based in Chicago, Illinois, United States. Among the 10 companies in the known portfolio are uBiome, Catalog, Verge Genomics, A-Alpha Bio, Arzeda and GRO Biosciences.
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Investment focus
Who to pitch at OS Fund
OS Fund portfolio companies (10)
- uBiome
- Catalog
- Verge Genomics
- A-Alpha Bio
- Arzeda
- GRO Biosciences
- Aria Pharmaceuticals
- NuMat Technologies
- Lygos
- Kenota Health
Co-investors
Funds that share portfolio companies with OS Fund.
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About OS Fund
The firm's listing covers sectors AI, Climate, Hardware and Healthcare, and focus areas Advanced Materials, Biotech, DeepTech and Diagnostics; known deals cluster at Growth, Seed and Series A.
The contact to approach at OS Fund is Bryan Johnson (Founder).
OS Fund shares portfolio companies with 20 other investment firms, among them CLI. Investment & Management Co., Hello World and Farvatn.
Frequently asked questions
What is OS Fund?
OS Fund is a venture capital firm based in Chicago, Illinois, United States, with a known portfolio of 10 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does OS Fund invest in?
Listed sectors include AI, Climate, Hardware and Healthcare; listed focus areas include Advanced Materials, Biotech, DeepTech and Diagnostics. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does OS Fund invest at?
The known deals of OS Fund include Growth, Seed and Series A rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at OS Fund?
One person at OS Fund is on file, listed as a contact for the firm, with their own profile page.
How do I contact OS Fund?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The one person attached to the firm has their own page, which shows whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal