Investor Presentaiton

I Stock Price Performance and Dividend Trend Stock Price Performance Price Change (%) 125 100 75 50 60 25 25 0 -25 Dec '15 Jun '16 Dec '16 Jun'17 Dec '17 Jun '18 Dec '18 Jun '19 Dec '19 Jun '20 Dec '20 Mar '21 NASDAQ:CATC:77.89% SNL U.S. Bank and Thrift: 57.69% KBW Nasdaq Bank Index: 64.39% $2.50 $1.86 $2.00 $1.50 $1.00 $0.50 2017 Declared Dividends 21 years of increased dividends (1999 - 2020) $1.96 2018 $2.04 2019 $2.12 CAMBRIDGE BANCORP Source: S&P Global Market Intelligence 2021 as of March 31, 2021 YTD 2021 Dividends includes all dividends declared through April 21, 2021 $1.16 2020 YTD 2021 22 22

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