John Strom is an Owner at Haddington Ventures, whose known portfolio counts 1 company.
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Investment focus
- Stage
- Late-Stage
- Sector
- Climate
- Focus
- BatteryCarbonClean EnergyCritical MineralsGreen HydrogenLong Duration StorageSustainability
Contacts
Affiliated funds' portfolios
Owner at Haddington Ventures, whose known portfolio counts 1 company
- Endicott Biofuels
Investor Profile
The listing covers sector Climate, and focus areas Battery, Carbon, Clean Energy and Critical Minerals. Startups operating in these areas may find John Strom relevant.
The stage tag on this profile is Late-Stage.
What the affiliated firm has backed is the closest available signal on whether John Strom is worth approaching.
Colleagues at Haddington Ventures
Frequently asked questions
Who is John Strom?
John Strom is a private equity investor based in Houston, Texas, United States, listed as Owner at Haddington Ventures. The known portfolio of that firm is one company. That portfolio belongs to the firm, not to John Strom personally.
What does John Strom invest in?
Listed sectors include Climate; listed focus areas include Battery, Carbon, Clean Energy and Critical Minerals. 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 Strom invest at?
Haddington Ventures is listed for Late-Stage rounds in the database, and John Strom is listed there as Owner. 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 Strom listed at?
John Strom is listed as Owner at Haddington Ventures. 3 other people in the database share a firm with John Strom.
How do I contact John Strom?
A LinkedIn page is on file for John Strom. It is readable inside RaiseHunt after you create an account. The database holds no email address and 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