Justin Aldrich Rockefeller was born on July 12, 1979 in West Virginia. He is the youngest son of former West Virginia senator, Jay Rockefeller (b. 1937), and his wife, Sharon Percy Rockefeller (b. 1944). Rockefeller's maternal grandfather was former U.S. Senator Charles H. Percy (1919–2011) while his paternal grandparents were Blanchette Ferry Hooker (1909–1992) and John D. Rockefeller III (1906–1978), the eldest son of philanthropists John D. Rockefeller Jr. and Abby Aldrich Rockefeller. In 2002, Rockefeller graduated with a B.A. from Princeton University. At age 25, Rockefeller co-founded Generation Engage, a nonprofit nonpartisan organization that used grassroots activism and technology to help politicians and community college students engage with one another. In January 2010, GenerationEngage merged with a similar nonprofit, Mobilize.org. In 2009, he became a principal with Richmond Management, a global venture capital firm. Rockefeller is the global director of family offices and foundations at Addepar, a company that writes software to aggregate and analyze financial data. He serves on the Board of Trustees of Rockefeller Brothers Fund, Richmond Sustainability Foundation and Mobilize.org.