Investor Presentaiton

I Governance Responsibility The Board of Directors believes in strong oversight and engagement with our shareholders Key attributes of our Governance and Compensation practices are summarized below: Recently implemented a Risk Committee with a defined charter and purpose Recently added Environmental, Social and Corporate Governance (ESG) oversight as part of the corporate governance charter with clearly defined roles and responsibilities Expanded proxy disclosures in several areas including diversity metrics, compensation philosophy and board. composition Adopted a broad Human Rights Policy Statement that expressly includes gender identity Require our senior executives to satisfy meaningful stock ownership guidelines to strengthen the alignment with our shareholders' interests Align pay with performance by having. performance-based compensation greater than 50% of target total direct compensation, on average, for Named Executive Officers No uncapped payouts under our short or long term incentive plans Executive equity awards are 75% performance-based restricted stock units. ("PRSUS"), whose vesting is subject to performance relative to comparable banks. over a 3-year period Dividends on PRSUS issued are not paid until units are earned/vested Maintain a clawback policy that allows us to recover annual and long-term performance based compensation if we are required to restate our financial results No tax gross-ups of 280G excise taxes CAMBRIDGE BANCORP 29

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