ProSomnus SPAC Presentation Deck

Disclaimer O PROSOMNUS SLEEP TECHNOLOGIES This presentation is for informational purposes only and has been prepared to assist interested parties in making their own evaluation with respect to the proposed business combination between Lakeshore Acquisition I Corp. ("Lakeshore") and ProSomnus Holdings Inc. ("ProSomnus"). The information contained herein does not purport to be all-inclusive and none of Lakeshore, ProSomnus or any of their prospective affiliates, or any of their control persons, officers, directors, employees or representatives makes any representation or warranty, express or implied, as to the accuracy, completeness or reliability of the information contained in this presentation. It is not intended to form the basis of any investment decision or any other decision in respect of the business combination. You should not construe the contents of this presentation as investment, legal, business or tax advice. You should consult with your own counsel, financial advisor and tax advisor as to legal, business, financial, tax and related matters concerning the matters described herein. Important Information About the Proposed Business Comb ation and Where to Find It In connection with the proposed business combination, Lakeshore intends to file a Registration Statement on Form S-4, including a preliminary proxy statement/prospectus and a definitive proxy statement/prospectus with the SEC. Lakeshore's shareholders and other interested persons are advised to read, when available, the preliminary proxy statement/prospectus and the amendments thereto and the definitive proxy statement/prospectus as well as other documents filed with the SEC in connection with the proposed business combination, as these materials will contain important information about ProSomnus, Lakeshore, and the proposed business combination. When available, the definitive proxy statement/prospectus and other relevant materials for the proposed business combination will be mailed to shareholders of Lakeshore as of a record date to be established for voting on the proposed business combination. Shareholders will also be able to obtain copies of the preliminary proxy statement/prospectus, the definitive proxy statement/prospectus, and other documents filed with the SEC that will be incorporated by reference therein, without charge, once available, at the SEC's website at www.sec.gov, or by directing a request to: www.lakeshoreacquisition.com. Participants in the Solicitation Lakeshore and its directors and executive officers may be deemed participants in the solicitation of proxies from Lakeshore's shareholders with respect to the business combination. A list of the names of those directors and executive officers and a description of their interests in Lakeshore will be included in the proxy statement/prospectus for the proposed business combination and be available at www.sec.gov. Additional information regarding the interests of such participants will be contained in the proxy statement/prospectus for the proposed business combination when available. ProSomnus and its directors and executive officers may also be deemed to be participants in the solicitation of proxies from the shareholders of Lakeshore in connection with the proposed business combination. A list of the names of such directors and executive officers and information regarding their interests in the proposed business combination will be included in the proxy statement/prospectus for the proposed business combination. Forward-Looking Statements Except for historical information contained herein, this presentation contains certain "forward-looking statements" within the meaning of the federal U.S. securities laws with respect to the proposed business combination between Lakeshore and ProSomnus, the benefits of the transaction, the amount of cash the transaction will provide ProSomnus, the anticipated timing of the transaction, the services and markets of ProSomnus, our expectations regarding future growth, results of operations, performance, future capital and other expenditures, competitive advantages, business prospects and opportunities, future plans and intentions, results, level of activities, performance, goals or achievements or other future events. These forward-looking statements generally are identified by words such as "anticipate," "believe," "expect," "may," "could," "will," "potential," "intend," "estimate," "should," "plan," "predict," or the negative or other variations of such statements, reflect our management's current beliefs and assumptions and are based on the information currently available to our management. Forward-looking statements are predictions, projections and other statements about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Many factors could cause actual results or developments to differ materially from those expressed or implied by such forward-looking statements, including but not limited to: (i) the risk that the transaction may not be completed in a timely manner or at all, which may adversely affect the price of Lakeshore's securities; (ii) the risk that the transaction may not be completed by Lakeshore's business combination deadline and the potential failure to obtain an extension of the business combination deadline if sought by Lakeshore; (iii) the failure to satisfy the conditions to the consummation of the transaction, including the approval of the business combination agreement by the stockholders of Lakeshore, the satisfaction of the minimum cash amount following any redemptions by Lakeshore's public stockholders and the receipt of certain governmental and regulatory approvals; (iv) the lack of a third-party valuation in determining whether or not to pursue the proposed transaction; (v) the occurrence of any event, change or other circumstance that could give rise to the termination of the business combination agreement; (vi) the effect of the announcement or pendency of the transaction on ProSomnus's business relationships, operating results and business generally; (vii) risks that the proposed transaction disrupts current plans and operations of ProSomnus; (viii) the outcome of any legal proceedings that may be instituted against ProSomnus or Lakeshore related to the business combination agreement or the proposed transaction; (ix) the ability to maintain the listing of Lakeshore's securities on a national securities exchange; (x) changes in the competitive industries in which ProSomnus operates, variations in operating performance across competitors, changes in laws and regulations affecting ProSomnus's business and changes in the combined capital structure; (xi) the ability to implement business plans, forecasts and other expectations after the completion of the proposed transaction, and identify and realize additional opportunities; (xii) the risk of downturns in the market and ProSomnus's industry including, but not limited to, as a result of the COVID-19 pandemic; (xiii) costs related to the transaction and the failure to realize anticipated benefits of the transaction or to realize estimated pro forma results and underlying assumptions, including with respect to estimated stockholder redemptions; (xiv) the inability to complete its convertible debt financing; (xv) the risk of potential future significant dilution to stockholders resulting from lender conversions under the convertible debt financing; and (xvi) risks and uncertainties related to ProSomnus's business, including, but not limited to, risks relating to the uncertainty of the projected financial information with respect to ProSomnus; risks related to ProSomnus's limited operating history, the roll-out of ProSomnus's business and the timing of expected business milestones; ProSomnus's ability to implement its business plan and scale its business, which includes the recruitment of healthcare professionals to prescribe and dentists to deliver ProSomnus oral devices; the understanding and adoption by dentists and other healthcare professionals of ProSomnus oral devices for mild-to-moderate OSA; expectations concerning the effectiveness of OSA treatment using ProSomnus oral devices and the potential for patient relapse after completion of treatment; the potential financial benefits to dentists and other healthcare professionals from treating patients with ProSomnus oral devices and using ProSomnus's monitoring tools; ProSomnus's potential profit margin from sales of ProSomnus oral devices; ProSomnus's ability to properly train dentists in the use of the ProSomnus oral devices and other services it offers in their dental practices; ProSomnus's ability to formulate, implement and modify as necessary effective sales, marketing, and strategic initiatives to drive revenue growth; ProSomnus's ability to expand internationally; the viability of ProSomnus's intellectual property and intellectual property created in the future; acceptance by the marketplace of the products and services that ProSomnus markets; government regulations and ProSomnus's ability to obtain applicable regulatory approvals and comply with government regulations, including under healthcare laws and the rules and regulations of the U.S. Food and Drug Administration; and the extent of patient reimbursement by medical insurance in the United States and internationally. The foregoing list of factors is not exclusive. You should carefully consider the foregoing factors and the other risks and uncertainties described in the "Risk Factors" section of proxy statement, when available, and other documents filed by Lakeshore from time to time with the SEC. These filings identify and address other important risks and uncertainties that could cause actual events and results to differ materially from those contained in the forward-looking statements. Forward-looking statements speak only as of the date on which they are made, and neither ProSomnus nor Lakeshore assume any obligation to update or revise any forward-looking statements or other information contained herein, whether as a result of new information, future events or otherwise. You are cautioned not to put undue reliance on these forward-looking statements. Neither Lakeshore nor ProSomnus gives any assurance that either Lakeshore or ProSomnus, or the combined company, will achieve its expectations. 2 STRICTLY CONFIDENTIAL