Investor Presentaiton

Paycheck Protection Program (PPP) Dollars in thousands We processed approximately 1,450 PPP loans for clients PPP Round 1 Outstanding Loan Details as of March 31, 2021 % of amount Total # of Loans % of count below $100K $5,244 129 49% 7% $100k to $500k 22,722 99 38% 29% $500K to $1 million 11,474 17 6% 15% above $1 million 37,490 18 7% 49% Subtotal $76,930 263 PPP Round 2 Originated Loan Details as of March 31, 2021 Total # of Loans % of count % of amount below $100K 12,777 320 57% 14% $100k to $500k 41,334 190 34% 44% $500K to $1 million 27,030 38 7% 29% above $1 million 11,787 2% 13% Subtotal $92,928 557 Total PPP Outstanding as of March 31, 2021 Total Principal 169,858 Deferred costs net of (4,179) unearned fees Total $165,679 # of Loans 820 % of count % of amount As of March 31, 2021 78% of the first round of PPP loans have been or are in the process of being forgiven CAMBRIDGE BANCORP As of March 31, 2021, we have 53 pending applications totaling $35M submitted to the SBA for forgiveness 16

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