Investor Presentaiton

| Commercial Real Estate Loan Portfolio By Sector By Geography Hotel & Lodging 5.0% Industrial/Warehouse 2.7% Other 1.8% Other Residential 5.6% Construction & Land 9.1% Commercial/Flex space 9.3% Retail 10.6% Mixed Use Office/Retail 10.6% Multifamily 31.8% ME 2.6% Office 13.5% Other 2.8% NH 13.0% Portfolio Details: • • $1.4B outstanding as of March 31, 2021 835 total loans $1.6M average loan size CAMBRIDGE BANCORP MA 81.6% 14 14

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