As of February 19, 2011, Charter Oak Bank was acquired by Bank of Marin. Charter Oak Bank offers banking services in the United States. The bank's services include deposit accounts, including business accounts, consumer accounts, and money market accounts; and loans, such as lines of credit, term loans, consumer loans, and loans for construction, real estate, wineries, and vineyards. It also offers online banking services. Charter Oak Bank was founded in 2004 and is based in Napa, California.