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OS Fund

Investor type Venture Capital
Founders Bryan Johnson Jeff Klunzinger Jeffrey Klunzinger


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This summary is composed by our algorithm based on the analysis of the deals. If you think that some of this information is not accurate, please let us know about it and provide any supporting evidences if possible. Such cases will be analyzed by our ML-algorithm and implemented in our database, which will improve this summary.
Total investments 46
Average round size
The average size of a deal this fund participated in
Portfolio companies 33
Rounds per year 5.75
Lead investments 6
Follow on index
How often the fund supports its portfolio startups at next rounds
Exits 5
Key employees 2

Areas of investment

  • Biotechnology
  • Health Care
  • Health Diagnostics
  • Genetics
  • Medical

This organization was formed by Bryan Johnson, Jeff Klunzinger, Jeffrey Klunzinger. We also calculated 4 valuable employees in our database.

The standard case for the fund is to invest in rounds with 6-7 partakers. Despite the OS Fund, startups are often financed by Founders Fund, Data Collective DCVC, Y Combinator. The meaningful sponsors for the fund in investment in the same round are Y Combinator, Founders Fund, Data Collective DCVC. In the next rounds fund is usually obtained by Y Combinator, Lux Capital, Data Collective DCVC.

Besides, a startup needs to be aged 4-5 years to get the investment from the fund. We can highlight the next thriving fund investment areas, such as Therapeutics, Genetics. The fund has no exact preference in some founders of portfolio startups. When startup sums 5+ of the founder, the probability for it to get the investment is little. Among the most popular portfolio startups of the fund, we may highlight Cleversafe, Human Longevity, Ginkgo BioWorks.

The top amount of exits for fund were in 2018. The top activity for fund was in 2016. Despite it in 2019 the fund had an activity. Opposing the other organizations, this OS Fund works on 22 percentage points less the average amount of lead investments. Speaking about the real fund results, this VC is 3 percentage points less often commits exit comparing to other organizations. The usual things for fund are deals in the range of 10 - 50 millions dollars. The fund is constantly included in 7-12 investment rounds annually. The average startup value when the investment from OS Fund is 100-500 millions dollars.

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Notable deals

CompanyIndustryRound SizeDateInvestorsLocation


Information Services
Information Technology
$33M29 Mar 2022 Seattle, Washington, United States

Kenota Health

Health Care
Health Diagnostics
$9M07 Dec 2020 Kitchener, Ontario, Canada

A-Alpha Bio

Health Care
Product Design
$2M24 Sep 2019 Seattle, Washington, United States

GRO Biosciences

Health Diagnostics
Medical Device
$3M13 Mar 2019 Boston, Massachusetts, United States


Health Care
$83M21 Sep 2018 San Francisco, California, United States


Advanced Materials
Clean Energy
$15M17 Jul 2018 Berkeley, California, United States


Data Storage
Information Services
Information Technology
$4M26 Jun 2018 Boston, Massachusetts, United States

NuMat Technologies

Renewable Energy
$12M26 Apr 2018 Illinois, United States

Aria Pharmaceuticals

Artificial Intelligence
Big Data
Machine Learning
$10M19 Mar 2018 Palo Alto, California, United States


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