Investor Presentaiton

Commercial & Industrial Loan Portfolio By Industry Accommodation and Food 1% Construction 1% Health Care and Social Assistance 1% Manufacturing 3% Real Estate, Rental, and Leasing 6% Wholesale Trade 9% Retail Trade 1% Renewable Energy 46% NH 6% By Geography Professional Scientific and Technical 10% All Other 22% NY 8% RI 10% MA 60% Other 16% Industry breakout excludes PPP loans Portfolio Details: • Geography breakout excludes PPP loans $268M outstanding as of June 30, 2022; $265M outstanding excluding PPP loans $584k average loan size CAMBRIDGE BANCORP 45 15

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