Gladstone Capital Corporation is a business development company specializing in lower middle market, growth capital, add on acquisitions, change of control, buy & build strategies, debt refinancing, debt investments in senior term loans, revolving loans, secured first and second lien term loans, senior subordinated loans, unitranche loans, junior subordinated loans, and mezzanine loans and equity investments in the form of common stock, preferred stock, limited liability company interests, or warrants. It operates as a business development company. The fund also makes private equity investments in acquisitions, buyouts and recapitalizations, and refinancing existing debts. It targets small and medium-sized companies in United States.