Portman Ridge Finance Corporation functions as a Business Development Company (BDC) primarily focused on delivering financial solutions to middle-market businesses. The firm's investment strategy involves a wide spectrum of capital, including various debt instruments and equity participation. Their debt portfolio includes unitranche loans (featuring "last out" tranches), first and second-lien loans, and subordinated debt. Beyond debt, Portman Ridge actively engages in co-investing in equity and directly acquiring middle-market companies. Additionally, they pursue strategic acquisitions of businesses that complement their existing operations. The company's investment scope spans a broad array of industries, such as healthcare, cargo transport, manufacturing, industrial and environmental services, logistics and distribution, media and telecommunications, real estate, education, automotive, agriculture, aerospace/defense, packaging, electronics, finance, non-durable consumer goods, general consumer products, business services, utilities, insurance, and food and beverage. Typically, Portman Ridge commits between $1 million and $20 million per portfolio company. Their specific offerings include senior secured term loans ranging from $2 million to $20 million, which mature in five to seven years. Second-lien term loans generally fall between $5 million and $15 million, with maturities of six to eight years, while senior unsecured loans are provided for $5 million to $23 million, also maturing in six to eight years. Mezzanine loans, typically $5 million to $15 million, carry longer terms of seven to ten years. Equity investments usually range from $1 million to $5 million. The firm generally targets companies with an EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization) of $5 million to $25 million. However, for debt security investments specifically, they consider middle-market firms demonstrating an EBITDA between $10 million and $50 million, or those with total debt ranging from $25 million to $150 million. Portman Ridge often acquires minority, majority, or even controlling equity stakes, frequently in collaboration with private equity sponsor partners.