XONE ExOne Company

As previously disclosed, on August 11, 2021, The ExOne Company (“ExOne” or the “Company”) entered into an Agreement and Plan of Merger (the “Merger Agreement”), by and among Desktop Metal, Inc., a Delaware corporation (“Desktop Metal”), Texas Merger Sub I, Inc., a Delaware corporation and a wholly owned subsidiary of Desktop Metal (“Merger Sub I”), Texas Merger Sub II, LLC, a Delaware limited liability company and a wholly owned subsidiary of Desktop Metal (“Merger Sub II”), and ExOne, pursuant to which, subject to the terms and conditions set forth therein, Merger Sub I will merge with and into ExOne (the “First Merger”), and immediately thereafter ExOne, as the surviving corporation of the First Merger, will merge with and into Merger Sub II (the “Second Merger,” and together with First Merger, the “Mergers”), with Merger Sub II surviving the Second Merger and continuing as a wholly owned subsidiary of Desktop Metal.

The Mergers are subject to the satisfaction or permitted waiver of certain closing conditions, including, among other things, the expiration or termination of any applicable waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (the “HSR Waiting Period”). The HSR Waiting Period expired on October 28, 2021 at 11:59 p.m. Eastern Time.

Subject to obtaining ExOne stockholder approval and the satisfaction of other closing conditions to the Mergers, ExOne and Desktop Metal expect to complete the Mergers during the fourth quarter of 2021.

Additional Information and Where to Find It

This communication relates to a proposed transaction between DM and the Company. In connection with the proposed transaction, DM has filed a registration statement on Form S-4 with the SEC, which included a document that serves as a preliminary proxy statement with respect to ExOne and a prospectus with respect to DM’s Class A common stock to be issued in the proposed transaction ExOne subsequently filed a definitive proxy statement with the SEC on October 8, 2021. On or about October 12, 2021, ExOne sent the definitive proxy statement to all of ExOne’s stockholders as of the record date in connection with the meeting to be held to request stockholder approval of the proposed transaction. Each party also will file other documents regarding the proposed transaction with the SEC. BEFORE MAKING ANY VOTING DECISION, INVESTORS AND SECURITY HOLDERS OF THE COMPANY ARE URGED TO READ THE REGISTRATION STATEMENT, DEFINITIVE PROXY STATEMENT/PROSPECTUS AND ALL OTHER RELEVANT DOCUMENTS FILED OR THAT WILL BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSED TRANSACTION AS THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION.

Investors and the Company’s stockholders may obtain free copies of the proxy statement/prospectus and other documents that are filed or will be filed with the SEC by DM or the Company through the website maintained by the SEC at www.sec.gov. The documents filed by DM with the SEC also may be obtained free of charge at DM’s website at ir.desktopmetal.com. The documents filed by the Company with the SEC also may be obtained free of charge at the Company’s website at investor.exone.com.

Participants in the Solicitation

DM and the Company and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the Company’s stockholders in connection with the proposed transaction. Information about the Company’s directors and executive officers and their ownership of the Company’s common stock is set forth in the Company’s proxy statement for its Special Meeting of Stockholders on Schedule 14A filed with the SEC on October 8, 2021. Information about DM’s directors and executive officers is set forth in DM’s proxy statement for its Annual Meeting of Stockholders on Schedule 14A filed with the SEC on June 17, 2021. To the extent that holdings of DM’s or the Company’s securities have changed since the amounts printed in DM’s or the Company’s proxy statement, such changes have been or will be reflected on Statements of Changes in Beneficial Ownership on Form 4 filed with the SEC. Additional information regarding the interests of those persons and other persons who may be deemed participants in the proposed transaction may be obtained by reading the proxy statement/prospectus regarding the proposed transaction when it becomes available. You may obtain free copies of these documents as described in the preceding paragraph.

No Offer or Solicitation

This communication is not intended to and shall not constitute an offer to sell or the solicitation of an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote of approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act.

Safe Harbor Regarding Forward Looking Statements

This communication relates to a proposed business combination transaction between DM and the Company and may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act with respect to the Company’s future financial or business performance, strategies, or expectations. Forward-looking statements typically are identified by words or phrases such as “trend,” “potential,” “opportunity,” “pipeline,” “believe,” “comfortable,” “expect,” “anticipate,” “current,” “intention,” “estimate,” “position,” “assume,” “outlook,” “continue,” “remain,” “maintain,” “sustain,” “seek,” “achieve,” as well as similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could” and “may.”

The Company cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made and the Company assumes no duty to and does not undertake to update forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.

In addition to risk factors previously disclosed in the Company’s filings with the SEC, including its Annual Report on Form 10-K, the following factors, among others, could cause results to differ materially from forward-looking statements or historical performance: the severity and duration of world health events, including the COVID-19 outbreak and the related economic repercussions and operational challenges; the ability of DM and ExOne to consummate the proposed transaction in a timely manner or at all, including the ability to secure regulatory approvals; impact to ExOne’s business if the transaction is not consummated; successful integration of DM’s and ExOne’s businesses and realization of synergies and benefits; the ability of DM to implement business plans, forecasts and other expectations following the completion of the transaction; risk that actual performance and financial results following completion of the transaction differ from projected performance and results; business disruption following the transaction; ExOne’s ability to consistently generate operating profits; fluctuations in ExOne’s revenues and operating results; ExOne’s competitive environment and its competitive position; ExOne’s ability to enhance its current 3D printing machines and technology and to develop and introduce new 3D printing machines; ExOne’s ability to qualify more industrial materials in which it can print; demand for ExOne’s products; the availability of skilled personnel; the impact of loss of key management; the impact of customer specific terms in machine sale agreements in determining the period in which ExOne recognizes revenue; risks related to global operations including effects of foreign currency and COVID-19; dependency on certain critical suppliers; nature or impact of alliances and strategic investments; reliance on critical information technology systems; the effect of litigation, contingencies and warranty claims; liabilities under laws and regulations protecting the environment; the impact of governmental laws and regulations; operating hazards, cyberattacks, war, terrorism and cancellation or unavailability of insurance coverage; the impact of disruption of ExOne’s manufacturing facilities or ExOne Adoption Centers; the adequacy of ExOne’s protection of its intellectual property; expectations regarding demand for ExOne’s industrial products, and other matters with regard to outlook; and other factors beyond our control, including the impact of COVID-19. A more fulsome discussion of the risks related to the proposed transaction will be included in the proxy statement/prospectus. For additional information about other risks and uncertainties that could cause actual results of the transaction to differ materially from those described in the forward-looking statements in this communication of ExOne’s business, financial condition, results of operations and prospects generally, please refer to the Company’s reports filed with the SEC, including without limitation the “Risk Factors” and/or other information included in the Form 8-K to be filed by the Company in connection with the transaction, the Form 10-Q filed with the SEC on August 11, 2021 and such other reports as ExOne has filed or may file with the SEC from time to time. For additional information about risks and uncertainties that may cause actual results of the transaction to differ materially from those described, please refer to DM’s reports filed with the SEC, including without limitation the “Risk Factors” and/or other information included in such reports. While the list of factors presented here is, and the list of factors presented in the proxy statement/prospectus will be considered representative, no such list should be considered to be a complete statement of all risks and uncertainties. Unlisted factors may present significant additional obstacles to the realization of forward-looking statements. Except as required by applicable law, neither DM nor ExOne will update any forward-looking statements to reflect new information, future events, changed circumstances or otherwise.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.