GreenLight SPAC Presentation Deck

Disclaimer Trademarks All trademarks, service marks, and trade names of Environmental Impact Acquisition Corporation ("ENVI") or GreenLight or their respective affiliates used herein are trademarks, service marks, or registered trade names of Environmental Impact Acquisition Corporation ("ENVI") or GreenLight, respectively, as noted herein. Any other product, company names, or logos mentioned herein are the trademarks and/or intellectual property of their respective owners, and their use is not intended to, and does not imply, a relationship, endorsement, sponsorship or future dealings with Environmental Impact Acquisition Corporation ("ENVI") or GreenLight. Participants in the solicitation GreenLight, Environmental Impact Acquisition Corporation ("ENVI") and their respective directors and certain of their respective executive officers and other members of management and employees may be considered participants in the solicitation of proxies with respect to the Proposed Business Combination. Information about the directors and executive officers of Environmental Impact Acquisition Corporation ("ENVI") is in its Form 10-K for the fiscal year ended December 31, 2020 and information about GreenLight's directors, officers and employees can be found at www.greenlightbiosciences.com. Additional information regarding the participants in the proxy solicitation and a description of their direct interests, by security holdings or otherwise, will be set forth in the Registration Statement and other relevant materials to be filed with the SEC regarding the Proposed Business Combination. Stockholders, potential investors and other interested persons should read the Registration Statement carefully before making any voting or investment decisions. These documents, when available, can be obtained free of charge from the sources indicated above. Financial information The financial information and data contained in this Presentation is unaudited and does not conform to Regulation S-X. Accordingly, such information and data may not be included in, may be adjusted in, or may be presented differently in, any proxy statement/prospectus or registration statement or other report or document to be filed or furnished by Environmental Impact Acquisition Corporation ("ENVI") with the SEC. Some of the financial information and data contained in this Presentation has not been prepared in accordance with United States generally accepted accounting principles ("GAAP"). Environmental Impact Acquisition Corporation ("ENVI") and GreenLight believe these non-GAAP measures of financial results provide useful information to management and investors regarding certain financial and business trends relating to GreenLight's financial condition and results of operations. You should review GreenLight's audited financial statements prepared in accordance with GAAP, which will be included in a combined registration statement and proxy statement to be filed with the SEC. Investor Presentation | 2021 GreenLight Biosciences. All rights reserved. GreenLight confidential. 4

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