Oaktree Specialty Lending Corporation is a business development company. It invests in middle market companies, primarily in North America, through first and second lien debt, unsecured and mezzanine loans, senior and junior secured debt, preferred equity, and management buyouts. The firm targets small and mid-sized companies in sectors such as education, business services, retail, healthcare, manufacturing, food and restaurants, construction, media, advertising, software, IT services, pharmaceuticals, biotechnology, real estate, chemicals, machinery, and internet retail. It typically invests $5 million to $75 million per company, with enterprise values of $20 million to $150 million and EBITDA of $3 million to $50 million, and seeks to be a lead investor.