Joan Gardener is a Managing Partner at Rio Tinto, whose known portfolio counts 9 companies.
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Investment focus
- Focus
- AI ApplicationsBatteryClean EnergyData AnalyticsEVLithiumMachine LearningMetalsMining
Contacts
Affiliated funds' portfolios
Managing Partner at Rio Tinto, whose known portfolio counts 9 companies
- Electra
- Vycarb
- RainStick
- Terra AI
- GeologicAI
- Rock Zero
- Chalco Rio Tinto JV
- Ekion
- Thunderstone
Investor Profile
The listing covers sectors AI, Climate and Hardware, and focus areas AI Applications, Battery, Clean Energy and Data Analytics. Startups operating in these areas may find Joan Gardener relevant.
Stage-wise, the deals at Rio Tinto cluster around Pre-Seed, Seed and Series B rounds.
What the affiliated firm has backed is the closest available signal on whether Joan Gardener is worth approaching.
Colleagues at Rio Tinto
Roberta Harting Kuehne
Vice President, Commercial
Salt Lake City, United States
Marcus Trotter
Investor
Singapore
Laura Hughes
Principal Advisor Geometallurgy
West Jordan, United States
Soeren Klatt
Principal Advisor
Montreal, Canada
Al Cheaito
Venture Capital
Montreal, Canada
Frequently asked questions
Who is Joan Gardener?
Joan Gardener is a corporate venture investor based in Salt Lake City, Utah, United States, listed as Managing Partner at Rio Tinto. The known portfolio of that firm counts 9 companies. That portfolio belongs to the firm, not to Joan Gardener personally.
What does Joan Gardener invest in?
Listed sectors include AI, Climate and Hardware; listed focus areas include AI Applications, Battery, Clean Energy and Data Analytics. 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 Joan Gardener invest at?
Rio Tinto appears in Pre-Seed, Seed and Series B rounds across its known deals, and Joan Gardener is listed there as Managing Partner. 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 Joan Gardener listed at?
Joan Gardener is listed as Managing Partner at Rio Tinto. 5 other people in the database share a firm with Joan Gardener.
How do I contact Joan Gardener?
A LinkedIn page is on file for Joan Gardener. 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