MaxCyte IPO Presentation Deck

Disclaimer The content of this document (the "Presentation") has not been approved by an authorized person within the meaning of the Financial Services and Markets Act 2000 ("FSMA"), as amended. Reliance on this document for the purpose of engaging in any investment activity may expose an individual or organization to a significant risk of losing all of their investment. If you are in any doubt about the investment to which this Presentation relates, you should consult a person authorized by the Financial Conduct Authority who specializes in advising on securities of the kind described in this Presentation or your stockbroker, bank manager, solicitor, accountant or other financial adviser. This Presentation has been issued by MaxCyte Inc (the "Company") a Company trading on AIM, a market operated by the London Stock Exchange. This does not constitute or form of, not be construed as an offer or invitation to sell or issue or any solicitation of, any offer to purchase or subscribe for any securities in the Company in any jurisdiction. Neither the Presentation, nor any part of it nor anything contained or referred to in it, nor the fact of its distribution, should form the basis of or be relied on in any connection with or act as an inducement in relation to a decision to purchase or subscribe for or enter into any contract or make any other commitment whatsoever in relation to any such securities. This Presentation does not constitute a recommendation regarding the securities of the Company. This presentation is only addressed to and directed at (i) persons who are outside the United Kingdom, (ii) persons who have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended (the "Order"), (iii) persons who are high net worth entities falling within Article 49(2)(a) to (d) of the Order, and/or (iv) any other persons to whom this presentation may otherwise lawfully be communicated without contravention of section 21 of the Financial Services and Markets Act 2000 or to whom it may otherwise lawfully be distributed (all such persons together being referred to as "relevant persons"). This presentation may not be acted on or relied on by persons who are not relevant persons. Any investment or investment activity to which this presentation relates is available only to relevant persons Certain statements in this Presentation are, or may be deemed to be, forward looking statements. Forward looking statements are identified by their use of terms and phrases such as "believe", "could", "should", "expect", "envisage", "estimate", "intend", "may". "plan", "potentially", "will" or the negative of those, variations or comparable expressions, including references to assumptions. These forward looking statements are not based on historical facts but rather on the Directors' current expectations and assumptions regarding the Company's future growth, results of operations, performance, future capital and other expenditures (including the amount, nature and sources of funding thereof), competitive advantages, business prospects and opportunities. Such forward looking statements reflect the Directors' current beliefs and assumptions and are based on information currently available to the Directors. A number of factors could cause actual results to differ materially from the results and expectations discussed in the forward looking statements, many of which are beyond the control of the Company. In particular, the outcome of clinical trials (including, but not limited to the Company's CARMA trial) may not be favorable or potential milestone payments associated with the Company's licensed programs may not be received. In addition, other factors which could cause actual results to differ materially include risks associated with vulnerability to general economic and business conditions, competition, regulatory changes, actions by governmental authorities, the availability of capital markets, reliance on key personnel, uninsured and underinsured losses and other factors. Although any forward looking statements contained in this announcement are based upon what the Directors believe to be reasonable assumptions, the Company cannot assure investors that actual results will be consistent with such forward looking statements. Accordingly, readers are cautioned not to place undue reliance on forward looking statements. Subject to any continuing obligations under applicable law or any relevant AIM Rule requirements, in providing this information the Company does not undertake any obligation to publicly update or revise any of the forward looking statements or to advise of any change in events, conditions or circumstances on which any such statement is based. No statement in the presentation is intended to be, or intended to be construed as, a profit forecast or profit estimate or to be interpreted to mean that earnings per Company share for the current or future financial years will necessarily match or exceed the historical earnings per Company share. As a result, no undue reliance should be placed on such statements. July 2021 CONFIDENTIAL M MaxCyte

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