Investor Presentaiton

Forward Looking Statements and Non-GAAP Measures Certain statements herein may constitute "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995. Such forward-looking statements about the Company and its industry involve substantial risks and uncertainties. Statements other than statements of current or historical fact, including statements regarding the Company's future financial condition, results of operations, business plans, liquidity, cash flows, projected costs, the impact of any laws or regulations applicable to the Company, and measures being taken in response to the COVID-19 pandemic and the impact of the COVID-19 pandemic on the Company's business are forward-looking statements. Words such as "anticipates," "believes," "estimates," "expects," "forecasts," "intends," "plans," "projects," "may," "will," "should," and other similar expressions are intended to identify these forward-looking statements. Such statements are subject to factors that could cause actual results to differ materially from anticipated results. Such factors include, but are not limited to, the following: the current global economic uncertainty and economic conditions being less favorable than expected, disruptions to the credit and financial markets, changes in the Company's accounting policies or in accounting standards, weakness in the real estate market, legislative, regulatory or accounting changes that adversely affect the Company's business and/or competitive position, the Dodd-Frank Act's consumer protection regulations, the duration and scope of the COVID-19 pandemic and its impact on levels of consumer confidence, actions governments, businesses and individuals take in response to the COVID-19 pandemic, the impact of the COVID-19 pandemic and actions taken in response to the pandemic on global and regional economies and economic activity, the pace of recovery when the COVID-19 pandemic subsides, challenges from the integration of the Company and Optima Bank & Trust Company and Wellesley Bancorp Inc. ("Wellesley")resulting in the combined business not operating as effectively as expected, disruptions in the Company's ability to access the capital markets, the cost savings of the merger with Wellesley may not be fully realized or may take longer to realize than expected, operating costs, customer loss and business disruption following the merger with Wellesley, including adverse effects on relationships with employees, may be greater than expected, and other factors that are described in the Company's filings with the Securities and Exchange Commission, including the Annual Report on Form 10-K for the year end December 31, 2020, which the Company filed on March 15, 2021. The Company does not undertake, and specifically disclaims any obligation, to publicly release the result of any revisions which may be made to any forward-looking statements to reflect the occurrence of anticipated or unanticipated events or circumstances after the date of such statements. You are cautioned not to place undue reliance on these forward-looking statements. This presentation contains financial information determined by methods other than in accordance with accounting principles generally accepted in the United States of America ("GAAP"). This information includes operating net income and operating diluted earnings per share, tangible book value per share and the tangible common equity ratio, return on average assets, return on tangible common equity, efficiency ratio on an operating basis, operating pre-tax pre-provision income, and operating return on average assets. Operating net income and operating diluted earnings per share exclude items that management believes are unrelated to its core banking business such as merger, acquisition, and capital raise expenses, gain (loss) on disposition of investment securities, and other items. The Company's management uses operating net income and operating diluted earnings per share to measure the strength of the Company's core banking business and to identify trends that may to some extent be obscured by such excluded gains or losses. Management also supplements its evaluation of financial performance with analysis of tangible book value per share (which is computed by dividing shareholders' equity less goodwill and acquisition related intangible assets, or "tangible common equity," by common shares outstanding), the tangible common equity ratio (which is computed by dividing tangible common equity by tangible assets, defined as total assets less goodwill and acquisition related intangibles), analysis of return on average assets and return on tangible common equity on an operating basis, the operating efficiency ratio (which is computed by dividing noninterest expense adjusted for nonoperating expenses and total revenue adjusted for gain/(loss) on disposition of investment securities), analysis of operating pre-tax pre-provision income over average assets (which is computed by dividing income before taxes adjusted by provision for (release) for credit losses, non-operating expenses, and gain/(loss) on disposition of investment securities over average assets). The Company has included information on tangible book value per share, the tangible common equity ratio, and return on average assets and return on tangible common equity on an operating basis because management believes that investors may find it useful to have access to the same analytical tool used by management. As a result of merger and acquisition activity, the Company has recognized goodwill and other intangible assets in conjunction with business combination accounting principles. Excluding the impact of goodwill and other intangibles in measuring asset and capital values for the ratios provided, along with other bank standard capital ratios, provides a framework to compare the capital adequacy of the Company to other companies in the financial services industry. These non-GAAP measures should not be viewed as a substitute for operating results and other financial measures determined in accordance with GAAP. An item which management deems to be nonoperating and excludes when computing these non-GAAP measures can be of substantial importance to the Company's results for any particular quarter or year. The Company's non-GAAP performance measures, including operating net income, operating diluted earnings per share, tangible book value per share, the tangible common equity ratio, and return on average assets, return on average equity, and efficiency ratio on an operating basis are not necessarily comparable to non-GAAP performance measures which may be presented by other companies. Reconciliations of these non-GAAP financial measures to the most directly comparable GAAP financial measures are presented under "GAAP to Non-GAAP Reconciliations." Reconciliations are included in the most recent Earnings Release, which can be located on our website here: http://ir.cambridgetrust.com/News/ CAMBRIDGE BANCORP 26 26