Hercules Capital Inc is a specialty finance company engaged in providing senior secured loans to high-growth, venture capital-backed companies in a variety of technology, life sciences, and sustainable and renewable technology industries. It invests majorly in structured debt with warrants and, to a lesser extent, in senior debt and equity investments. The company lends to and invests in portfolio companies in various technology-related industries including technology, drug discovery and development, biotechnology, life sciences, healthcare, and sustainable and renewable technology.