Fundraising FoxThird Security, LLC
Family officeRadford · Growth · 7 people tracked
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Investment thesis
Third Security manages a portfolio of operating biotechnology companies while also functioning as a family office. The firm collaborates closely with its portfolio companies to accelerate innovation and growth, with a focus on applying biology to solve problems around the world.
Source: firm website, verified Aug 3, 2026.
Team · 7 people
from the firm's website & public directoriesWith Third Security since its inception and appointed CEO in November 2020, he oversees internal operations and works with portfolio companies, holding board and officer roles at GreenVenus and several Oxitec entities. He graduated as an Echols Scholar from the University of Virginia.
Founder and Executive Chairman of Third Security, having served as CEO from inception until November 2020. He founded New River Pharmaceuticals and has held board and executive roles at numerous public biotech companies including Precigen (formerly Intrexon), Halozyme, and ZIOPHARM. He holds a B.A. from Radford University and a J.D. from the University of Virginia.
CFO of Third Security since its inception, focusing on audit, internal control, financial operations, and technical accounting for the firm and its portfolio companies. He previously worked at Long-Airdox Company and Ernst & Young, and holds a B.B.A. in Accounting from Marshall University.
Chief Investment Officer leading Third Security's investment and portfolio management functions, including asset allocation, due diligence, deal structuring, and treasury management. He joined in 2001 and previously worked at General Injectables & Vaccines and Ernst & Young. He holds a B.S. in Accounting from Salem University.
Joined Third Security in 2010 and serves as Chief Compliance Officer, overseeing regulatory compliance, legal operations, corporate governance, and document retention. She previously worked at Precigen (formerly Intrexon) and holds a B.A. in History from Virginia Tech.
Chief Legal Officer of Third Security, providing legal, intellectual property, corporate governance, and strategic counsel to the firm and its portfolio companies. He previously led IP affairs at Precigen and practiced IP law at Hunton & Williams. He holds a B.S. from Cornell and a J.D. from George Mason University.
What they invest in
from 4 of 4 portfolio companiesBiotech ×4AgTech ×3FoodTech ×2AI & Machine Learning ×1Healthtech ×1Medical Devices ×1
HQs:United States×1
Investments · 4 tracked
founders shown can be your intro path
Precigen is a biopharmaceutical company developing gene and cell therapies, including PAPZIMEOS (zopapogene imadenovec-drba), an FDA-approved immunotherapy for adults with recurrent respiratory papillomatosis.
BiotechHealthtechMedical DevicesGermantown, US
Thomas D. Reed(Executive Officer)Thomas R. Kasser(Executive Officer)Suma M. Krishnan(Executive Officer)Robert F. Walsh, III(Executive Officer)Helen Sabzevari, PhD(President and CEO)Timothy Kasbe(Executive Officer)
Co-investorsThird Point Ventures
GreenVenus develops improved crop varieties including leafy greens, grapes, berries, avocados, beans, and lentils using breeding technologies focused on traits such as longer shelf-life, improved flavor, and higher yields.
AgTechBiotechFoodTech
Alana D. Kirk(President and CEO)in
Okanagan Specialty Fruits uses biotechnology to develop fruit varieties aimed at more efficient and sustainable food production.
AgTechBiotechFoodTech
Neal Carter(Founder and CEO)in
Flyttr operates a biosecurity platform that develops and deploys countermeasures against pest threats, combining autonomous pest monitoring systems, AI-powered decision-support, and biological interventions such as engineered Aedes aegypti and Wolbachia.
AgTechAI & Machine LearningBiotech
Co-investorsH20 Venture PartnersRockley Group
Exits · 2
1 IPOs · 1 acquisitionsPortfolio news
latest coverage across their companiesFrequently asked questions
- What stage does Third Security, LLC invest at?
- Third Security, LLC invests at the Growth stage.
- What sectors does Third Security, LLC focus on?
- Third Security, LLC focuses on Biotech.
- Where is Third Security, LLC located?
- Third Security, LLC is headquartered in Radford, US.
- Who does Third Security, LLC co-invest with?
- Third Security, LLC most often shares deals with H20 Venture Partners, Rockley Group, Third Point Ventures, among 3 tracked co-investors.
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