Portman Ridge Finance is an externally managed, non-diversified closed-end investment company. Co. originates, structures, and invests in secured term loans, bonds or notes and mezzanine debt in privately-held middle market companies but may also invests in other investments such as loans to publicly-traded companies, bonds, and distressed debt securities. Co. also invests in joint ventures and debt and subordinated securities issued by collateralized loan obligation funds. In addition, from time to time Co. may invests in the equity securities of privately held middle market companies and may also receive warrants or options to purchase common stock in connection with its debt investments.