Gladstone Capital Corporation is a business development company focused on private equity and venture capital investments in the lower middle market. It provides growth capital, add-on acquisitions, change of control, buy-and-build strategies, and debt refinancing. The company invests in senior term loans, revolving loans, secured first and second lien term loans, senior subordinated loans, unitranche loans, junior subordinated loans, mezzanine loans, and equity investments such as common stock, preferred stock, limited liability company interests, or warrants. It targets small and medium-sized companies in the United States across various industries, including business services, media, manufacturing, healthcare, and aerospace, with debt investments between $8 million and $40 million in companies with sales between $20 million and $150 million and EBITDA between $3 million and $25 million. It prefers minority stakes and seeks exits through strategic acquisitions, IPOs, or other capital market transactions.