Enterprise Bancorp, Inc. operates as the holding company for Enterprise Bank and Trust Company, a state chartered commercial bank that provides banking products and services. The company offers commercial and retail deposit products, including checking accounts, savings and money market accounts, commercial sweep products, and term certificates of deposit. It also provides commercial real estate mortgage loans, construction and land development loans, secured and unsecured commercial loans and lines of credit, and letters of credit, as well as equipment financing services; and conventional residential mortgage loans, home equity loans and lines, residential construction loans on primary and secondary residences, and secured and unsecured personal loans and lines of credit. In addition, the company offers cash management services; customized investment management and trust services to individuals, family groups, commercial businesses, trusts, foundations, non-profit organizations, and endowments; brokerage and management services to individual investors; and insurance products. Further, it provides voice, online, and mobile banking services. As of December 31, 2020, it operated 26 full-service branches located in the Massachusetts communities of Acton, Andover, Billerica, Chelmsford, Dracut, Fitchburg, Lawrence, Leominster, Lexington, Lowell, Methuen, Tewksbury, Tyngsborough, and Westford; and the New Hampshire communities of Derry, Hudson, Nashua, Pelham, Salem, and Windham. The company primarily serves business entities, non-profit organizations, professionals, municipalities, and individuals in Northern Middlesex, Northern Essex, and Northern Worcester counties of Massachusetts, as well as the Southern Hillsborough and Southern Rockingham counties in New Hampshire. Enterprise Bancorp, Inc. was founded in 1989 and is headquartered in Lowell, Massachusetts.