Hercules Capital Inc. provides senior secured loans to high-growth, venture capital-backed companies in a variety of technology, life sciences, and sustainable and renewable technology industries. Hercules is an internally managed, non-diversified, closed-end investment company. It invests primarily in structured debt with warrants and, to a lesser extent, in senior debt and equity investments. Hercules was founded in 2003 and is based in Palo Alto, CA.