John Jansen is an Independent Board Director at Oklo, whose known portfolio counts 1 company.
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Investment focus
- Focus
- Advanced FissionCarbonClean EnergyDeepTechSmall Modular Reactors
Contacts
Affiliated funds' portfolios
Independent Board Director at Oklo, whose known portfolio counts 1 company
- Blykalla
Investor Profile
Founders in the listed sectors Climate and Hardware, and focus areas Advanced Fission, Carbon, Clean Energy and DeepTech fall inside that listing.
The stage tags on this profile are Pre-Seed and Seed.
The firm portfolio and the focus above give founders context on whether John Jansen matches their raise.
Colleagues at Oklo
Frequently asked questions
Who is John Jansen?
John Jansen is a corporate venture investor based in Alexandria, Virginia, United States, listed as Independent Board Director at Oklo. The known portfolio of that firm is one company. That portfolio belongs to the firm, not to John Jansen personally.
What does John Jansen invest in?
Listed sectors include Climate and Hardware; listed focus areas include Advanced Fission, Carbon, Clean Energy and DeepTech. Those tags come from the portfolios of the firms this profile is attached to, so they read as a record of what has been backed rather than a stated preference for what comes next.
What stage does John Jansen invest at?
Oklo is listed for Pre-Seed and Seed rounds in the database, and John Jansen is listed there as Independent Board Director. Stage is the strongest single filter when you build a target list: an investor with no record at your stage rarely starts with you.
Which firm is John Jansen listed at?
John Jansen is listed as Independent Board Director at Oklo. One other person in the database shares a firm with John Jansen.
How do I contact John Jansen?
An email address, a phone number and a LinkedIn page are on file for John Jansen. The address stays masked on this page and is readable inside RaiseHunt after you create an account.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal