Organization · Family Office
Third Security, LLC
Third Security, LLC is a family office based in Radford, Virginia, focusing on managing a portfolio of biotechnology companies. The firm has transitioned from traditional venture capital to a strategic investment approach in the life sciences sector.
Overview
What Third Security, LLC does
What Third Security, LLC is
Third Security, LLC is a family office based in Radford, Virginia, focusing on managing a portfolio of biotechnology companies. The firm has transitioned from traditional venture capital to a strategic investment approach in the life sciences sector.
How it participates in the startup ecosystem
The current public profile supports funder capabilities. Each capability below is shown separately so organization identity and role-specific information do not get conflated.
Operational profile
Organization status and context
Organization status describes the entity itself. Funding and program availability appear within the relevant capability profile.
- Operational status
- Active
- Organization type
- Family Office
- Founded
- Founded in 1999
- Approximate age
- About 27 years
- Structured capabilities
- Funder
- Last reviewed
- April 28, 2026
Official channels
Find Third Security, LLC elsewhere
Open the official website or a supported primary organization account.
Capability profile
Third Security, LLC as a funder
Investment thesis
Third Security focuses on managing operating biotechnology companies, providing strategic assistance and business development to drive innovation and growth in the sector.
Focus narrative
Third Security invests in biotechnology companies, providing capital access, strategic assistance, and business development services. The firm is focused on driving innovation and growth within the biotechnology sector, leveraging its expertise to support portfolio companies in achieving their goals.
Value beyond capital
Third Security adds value to its portfolio companies through strategic assistance, business development services, and access to capital. The firm aims to actively manage and support its investments to foster innovation and growth in the biotechnology sector.
Focus and fit
- Regions
- United States
Availability
- Currently deploying
- No
Portfolio and track record
- Recorded portfolio count
- 4
Portfolio context
Notable portfolio companies include: GreenVenus, LLC: A biotechnology company involved in bioengineering. Eleszto Genetika, Inc.: Engaged in genetic research and biotechnology. Okanagan Produce Holdings, Inc.: Specializes in agricultural biotechnology. Oxitec UK Holdings, Inc.: Focuses on insect biotechnology solutions.
Common questions
What to know about Third Security, LLC
Upseed classifies Third Security, LLC under the Family Office organization type. Its current public profile includes funder capabilities.
Source and update disclosure
Know what this page is based on
Source basis
Public organization and program material, official websites, and structured Upseed records.
Last reviewed
April 28, 2026
Known limits
Capability profiles appear only when a structured public profile also contains decision-useful role evidence. Terms and availability can change.
Upseed is an independent guide. It is not affiliated with or endorsed by the organization described on this page.