NB Bancorp, Inc. functions as the holding company for Needham Bank, which delivers a broad spectrum of banking products and services. Its operations primarily serve the Greater Boston metropolitan area, extending to neighboring communities in Massachusetts, eastern Connecticut, southern New Hampshire, and Rhode Island. The company's diverse offerings include various deposit accounts, such as certificates of deposit, individual retirement accounts, money market accounts, savings accounts, NOW accounts, demand deposit accounts, and both interest-bearing and noninterest-bearing checking accounts.