Main Street Capital Corp is a business development company that provides debt and equity capital to lower middle market companies, typically with annual revenues between $10 million and $150 million. The company focuses on management buyouts, recapitalizations, growth financings, refinancings and acquisitions across various industries including manufacturing, business services, healthcare, and technology. Main Street operates as both a direct lender and equity investor, structuring customized financing solutions that often include senior debt, subordinated debt, and equity investments.