PB Bancorp, Inc. operates as the holding company of Putnam Bank that provides various banking products and services to individuals and small business customers primarily in Connecticut. It offers a range of deposits, including checking, savings, and money market deposit accounts, as well as negotiable order of withdrawal accounts and fixed-term certificates of deposit. The company's loan portfolio comprises residential real estate loans, including one-to four-family mortgage loans, residential construction loans, second mortgage loans, and home equity lines of credit; commercial real estate loans comprising multi-family real estate loans; commercial loans, such as term loans and revolving lines of credit; and consumer and other loans. In addition, it invests in securities. As of October 4, 2019, it operated through its eight full-service offices and a full-service loan center in Putnam, Connecticut. The company was founded in 1862 and is headquartered in Putnam, Connecticut.