Skip to content
Single Family OfficeInvests through funds, not into companiesLAST VERIFIED Jun 2026 · 1 SOURCES

Third Security

Single family office in Radford, United States, founded 1999; focus on healthtech, food & agriculture and climate.

Family & background

FAMILY
Kirk
HEADQUARTERS
Radford, United States
OFFICES
Delray Beach, FL, United States
FOUNDED
1999

Investment approach

Overview

Headquartered in Radford, United States, the firm is listed as a single family office founded in 1999. Sectors on record are healthtech, food & agriculture and climate. Other offices: Delray Beach, FL, United States; 1 person is named on its team.

People

  • Randal J. Kirk
    Founder and Executive Chairman · source

Frequently asked questions

Third Security is a single family office based in Radford, the United States, founded in 1999.

Third Security invests on behalf of the Kirk family.

Third Security does not publicly state whether it puts its own money into companies or invests through funds.

Third Security invests in HealthTech, Food & Agriculture and Climate & Energy.

Key people at Third Security include Randal J. Kirk (Founder and Executive Chairman).