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Home›
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OS Fund
AddedFeb 13, 2024
UpdatedJul 16, 2026
OS Fund

OS Fund

Operating

OS Fund LLC: A U.S. venture capital firm investing in seed and early-stage businesses.

Location
Chicago, IL, US
Founded
2014
Firm
Compare
Portfolio
Employees
Website

OS Fund LLC is a U.S.-based venture capital firm that focuses on investing in seed and early-stage businesses. The firm primarily targets innovative companies in the biotechnology, synthetic biology, and life sciences sectors. OS Fund typically participates in Series A, Seed, and Series B rounds, with investments ranging from early-stage funding to more substantial growth capital.

Notable portfolio companies include Ginkgo Bioworks, Human Longevity, Eat Just, and Synthego. The firm is known for its hands-on investment philosophy, providing not just capital but also strategic guidance and operational support to its portfolio companies. Key decision-makers at OS Fund bring a wealth of experience from various high-impact ventures, ensuring that their investments are well-supported for long-term success.

OS Fund - Portfolio Snapshot

Portfolio activity breakdown across disclosed investments and stages

Total Investments30
Current Portfolio Count18
Total Portfolio Exits1

Top Investment Stages

Series A11 (37.9%)
Seed8 (27.6%)
Series B8 (27.6%)
Series C1 (3.4%)
Series D1 (3.4%)

Stage Mix

Series A 38%Seed 28%Series B 28%Series C 3%Series D 3%

Concentration shown as share of disclosed investments by stage.

Recent Investments

Arzeda logo

Arzeda

A-Alpha Bio logo

A-Alpha Bio

GRO Biosciences logo

GRO Biosciences

Lygos logo

Lygos

Verge Genomics logo

Verge Genomics

Catalog logo

Catalog

NuMat Technologies logo

NuMat Technologies

Aria Pharmaceuticals logo

Aria Pharmaceuticals

3T Biosciences logo

3T Biosciences

Synthego logo

Synthego

Prospect Bio logo

Prospect Bio

Emulate logo

Emulate

Elysium Health logo

Elysium Health

Human Longevity logo

Human Longevity

Pivot Bio logo

Pivot Bio

Lucira Health logo

Lucira Health

Ginkgo Bioworks logo

Ginkgo Bioworks

Emerald Cloud Lab logo

Emerald Cloud Lab

Eat Just logo

Eat Just

Plethora logo

Plethora

LightSail Energy logo

LightSail Energy

OS Fund - Classification

Also Known As
  • OS Fund LLC
NAICS
  • 520000Finance and Insurance
  • 523000Securities, Commodity Contracts, and Other Financial Investments and Related Activities
  • 523900Other Financial Investment Activities
  • 523990All Other Financial Investment Activities
  • 523999Miscellaneous Financial Investment Activities
SIC
  • 6700Holding And Other Investment Offices
  • 6790Miscellaneous Investing
  • 6799Investors, Not Elsewhere Classified
Show 6 more industry codes
NAICS
  • 525000Funds, Trusts, and Other Financial Vehicles
  • 523910Miscellaneous Intermediation
  • 523940Portfolio Management and Investment Advice
SIC
  • 6000Depository Institutions
  • 6720Investment Offices
  • 6722Management Investment Offices, Open-end