NewStar Financial, Inc. operates as a specialized commercial finance company in the United States. The company focuses primarily on the direct origination of loans and equipment leases for meeting the complex financing needs of companies and private investors in the middle market. It originates, structures, and underwrites senior secured cash flow loans and second lien loans for companies for acquisition financing, growth and working capital, recapitalization, and other purposes; senior secured loans to larger middle market companies; and a range of senior debt financing options, including revolving credit facilities, term loans, and other debt products secured by various business assets. The company also offers revolving lines of credit and senior secured term loans for working capital, acquisition, dividend recapitalization, refinancing and restructuring, corporate growth, and management buyout purposes. In addition, it provides commercial real estate loans and other debt products for various purposes, including acquisitions, lease-ups, repositioning and build-out, and refinancing and recapitalizations of office, multi-family, retail, and industrial properties. Further, the company offers a range of lease financing options to mid-sized companies to fund various types of capital expenditures, including essential-use equipment finance for mid-sized businesses; and leases and loan products to fund a range of equipment types, including manufacturing, technology, healthcare, and telecom equipment. It serves manufacturing, healthcare, industrial/other, financial services, restaurants, auto/transportation, consumer services, tech services, environmental services, cable/telecom, printing/publishing, energy/chemical services, building materials, retail, broadcasting, marketing services, entertainment/leisure, consumer, and other business services industries. The company was founded in 2004 and is headquartered in Boston, Massachusetts.