21Ventures

21Ventures was a venture capital firm that specialized in seed and early-stage investments across several high-growth sectors, including life sciences, clean technology, and renewable energy. Founded by David Gladstone, the firm focused on identifying innovative technologies and providing the necessary capital and strategic guidance to accelerate market entry. In the healthcare space, 21Ventures invested in a variety of medical device and biotechnology companies, aiming to support breakthroughs in diagnostics and therapeutic delivery. While the firm was highly active during the mid-2000s, its operations have since wound down as its leadership transitioned to other investment vehicles.