Josh Grehan is an Investor at Helios Climate Ventures, whose known portfolio counts 9 companies.
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Investment focus
Contacts
Affiliated funds' portfolios
Investor at Helios Climate Ventures, whose known portfolio counts 9 companies
- Liminal
- Aqua Membranes
- Coreshell Technologies
- DG Matrix
- ZincFive
- Ambient Photonics
- Summit Nanotech
- GDI
- Maxterial
Investor Profile
Josh Grehan is listed against sectors Climate and Hardware, and focus areas Analytics, Battery, Chemical and Clean Energy in the database.
Helios Climate Ventures appears in Growth, Series A and Series B rounds across its known deals.
What the affiliated firm has backed is the closest available signal on whether Josh Grehan is worth approaching.
Colleagues at Helios Climate Ventures
Frequently asked questions
Who is Josh Grehan?
Josh Grehan is a venture capital investor based in Durham, North Carolina, United States, listed as Investor at Helios Climate Ventures. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Josh Grehan personally.
What does Josh Grehan invest in?
Listed sectors include Climate and Hardware; listed focus areas include Analytics, Battery, Chemical and Clean Energy. 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 Josh Grehan invest at?
Helios Climate Ventures appears in Growth, Series A and Series B rounds across its known deals, and Josh Grehan is listed there as Investor. 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 Josh Grehan listed at?
Josh Grehan is listed as Investor at Helios Climate Ventures. One other person in the database shares a firm with Josh Grehan.
How do I contact Josh Grehan?
An email address and a LinkedIn page are on file for Josh Grehan. The address stays masked on this page and is readable inside RaiseHunt after you create an account. The database holds no phone number for this profile.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal