Thistledown Foundation is a family office. The one team member on file is in Ottawa, Ontario, Canada. Among the 5 companies in the known portfolio are General Fusion, Marvel Fusion, CarbonCure Technologies, Avnos and Loam Bio.
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Investment focus
- Focus
- BiotechCarbonCarbonTechClean EnergyDeepTechFusion Energy
Who to pitch at Thistledown Foundation
Thistledown Foundation portfolio companies (5)
- General Fusion
- Marvel Fusion
- CarbonCure Technologies
- Avnos
- Loam Bio
Co-investors
Funds that share portfolio companies with Thistledown Foundation.
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About Thistledown Foundation
The firm's listing covers sectors Climate, Hardware and Healthcare, and focus areas Biotech, Carbon, CarbonTech and Clean Energy; known deals cluster at Seed and Series A.
Fiona McKean (Affiliated) is listed as the contact to pitch at Thistledown Foundation.
Across the known portfolio, 20 co-investors appear alongside Thistledown Foundation, including PenderFund Capital Management, Milfam and Jameel Investment Management Company.
Frequently asked questions
What is Thistledown Foundation?
Thistledown Foundation is a family office whose one person on file is in Ottawa, Ontario, Canada, with a known portfolio of 5 companies. The portfolio comes from public investment records rather than from the firm, so deals that never surfaced publicly are not in it.
What does Thistledown Foundation invest in?
Listed sectors include Climate, Hardware and Healthcare; listed focus areas include Biotech, Carbon, CarbonTech and Clean Energy. Those tags come from the portfolio attached to the firm, so they describe what has been backed rather than a stated mandate for what comes next.
What stage does Thistledown Foundation invest at?
The known deals of Thistledown Foundation include Seed and Series A rounds. Check that against your own round before reaching out: stage mismatch is the most common reason a well matched sector still goes nowhere.
Who should I pitch at Thistledown Foundation?
One person at Thistledown Foundation is on file, listed as a contact for the firm, with their own profile page.
How do I contact Thistledown Foundation?
Any email address on file for the firm is masked on this page and readable inside RaiseHunt after you create an account. The one person attached to the firm has their own page, which shows whether an address is on file for them.
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Data: RaiseHunt investor dataset · Snapshot 5 September 2026 · How this data is built · Report a correction or request removal