Third Security is a private equity firm and venture capital firm. The one team member on file is in Radford, Virginia, United States. Known portfolio companies include Soligenix, Precigen, AmpliPhi Biosciences, Cyntellect, Heyo and Synchrony, 8 companies in all.
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Investment focus
- Sector
- HealthcareSaaS
- Focus
- Active ManagementBiotechCommunications TechnologyDiagnosticsDrug DiscoveryGenomicsTherapeutics
Who to pitch at Third Security
Third Security portfolio companies (8)
- Soligenix
- Precigen
- AmpliPhi Biosciences
- Cyntellect
- Heyo
- Synchrony
- Fitnet
- Transgenomic
Co-investors
Funds that share portfolio companies with Third Security.
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About Third Security
The firm's listing covers sectors Healthcare and SaaS, and focus areas Active Management, Biotech, Communications Technology and Diagnostics; known deals cluster at Growth, Late-Stage and Series A.
The contact to approach at Third Security is Julian Kirk (Chief Executive Officer).
Third Security shares portfolio companies with 6 other investment firms, among them Patient Capital Management, Vignette and Pharmakon Advisors.
Frequently asked questions
What is Third Security?
Third Security is a private equity firm and venture capital firm whose one person on file is in Radford, Virginia, United States, with a known portfolio of 8 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 Third Security invest in?
Listed sectors include Healthcare and SaaS; listed focus areas include Active Management, Biotech, Communications Technology and Diagnostics. 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 Third Security invest at?
The known deals of Third Security include Growth, Late-Stage 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 Third Security?
One person at Third Security is on file, listed as a contact for the firm, with their own profile page.
How do I contact Third Security?
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