Goldman Sachs & Co. LLC is serving as exclusive financial advisor to one and Cadwalader, Wickersham & Taft LLP is serving as legal counsel.

Citigroup Global Markets Inc. and Goldman Sachs & Co. LLC are serving as co-placement agents on the PIPE.

Investor Webcast Information
In connection with this announcement, management of Markforged and one will host an investor webcast to discuss the transaction on Wednesday, February 24, 2021 at 8:00 a.m. EST. The webcast can be accessed here. For those who wish to participate by telephone, please dial 1-877-407-9039 (U.S.) or 1-201-689-8470 (International) and reference the Conference ID 13716849. The conference call will be accompanied by a detailed investor presentation. A copy of the investor presentation can be found by accessing https://investors.markforged.com.

About Markforged
Markforged transforms manufacturing with 3D metal and continuous carbon fiber printers capable of producing parts tough enough for the factory floor. Engineers, designers, and manufacturing professionals all over the world rely on Markforged metal and composite printers for tooling, fixtures, functional prototyping, and high-value end-use production. Founded in 2013 and based in Watertown, MA, Markforged has more than 250 employees globally, with $137 million in both strategic and venture capital. Markforged was recently recognized by Forbes in the Next Billion-Dollar Startups list, and listed as the #2 fastest-growing hardware company in the US in the 2019 Deloitte Fast 500. To learn more about Markforged, please visit https://markforged.com.

About one
one is a special purpose acquisition company sponsored by A* formed for the purpose of effecting a business combination with one or more businesses in the innovation economy. one completed its initial public offering in August 2020 raising $215 million in cash proceeds. A* was founded and is led by technology industry veteran Kevin Hartz. To learn more about one, please visit https://www.a-star.co/.

Important Information and Where to Find It
A full description of the terms of the transaction will be provided in a registration statement on Form S-4 to be filed with the SEC by one that will include a prospectus with respect to the combined company’s securities to be issued in connection with the business combination and a proxy statement with respect to the shareholder meeting of one to vote on the business combination. one urges its investors, shareholders and other interested persons to read, when available, the preliminary proxy statement/ prospectus as well as other documents filed with the SEC because these documents will contain important information about one, Markforged and the transaction. After the registration statement is declared effective, the definitive proxy statement/prospectus to be included in the registration statement will be mailed to shareholders of one as of a record date to be established for voting on the proposed business combination. Once available, shareholders will also be able to obtain a copy of the S-4, including the proxy statement/prospectus, and other documents filed with the SEC without charge, by directing a request to: one, 16 Funston Avenue, Suite A, The Presidio of San Francisco, San Francisco, California 94129, Attention: Secretary. The preliminary and definitive proxy statement/prospectus to be included in the registration statement, once available, can also be obtained, without charge, at the SEC’s website ( www.sec.gov).

Participants in the Solicitation
one and Markforged and their respective directors and executive officers may be considered participants in the solicitation of proxies with respect to the potential transaction described in this press release under the rules of the SEC. Information about the directors and executive officers of one is set forth in one’s final prospectus filed with the SEC pursuant to Rule 424(b) of the Securities Act of 1933, as amended (the “Securities Act”), on August 19, 2020 and is available free of charge at the SEC’s web site at www.sec.gov or by directing a request to: one, 16 Funston Avenue, Suite A, The Presidio of San Francisco, San Francisco, California 94129, Attention: Secretary. Information regarding the persons who may, under the rules of the SEC, be deemed participants in the solicitation of the one shareholders in connection with the potential transaction will be set forth in the registration statement containing the preliminary proxy statement/prospectus when it is filed with the SEC. These documents can be obtained free of charge from the sources indicated above.

Non-Solicitation
This press release is not a proxy statement or solicitation of a proxy, consent or authorization with respect to any securities or in respect of the potential transaction and shall not constitute an offer to sell or a solicitation of an offer to buy the securities of one, the combined company or Markforged, nor shall there be any sale of any such securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of such state or jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of the Securities Act.

Special Note Regarding Forward-Looking Statements
This press release contains forward-looking statements that are based on beliefs and assumptions and on information currently available. In some cases, you can identify forward-looking statements by the following words: “may,” “will,” “could,” “would,” “should,” “expect,” “intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “ongoing” or the negative of these terms or other comparable terminology, although not all forward-looking statements contain these words. These statements involve risks, uncertainties and other factors that may cause actual results, levels of activity, performance or achievements to be materially different from the information expressed or implied by these forward-looking statements. Although we believe that we have a reasonable basis for each forward-looking statement contained in this press release, we caution you that these statements are based on a combination of facts and factors currently known by us and our projections of the future, about which we cannot be certain. Forward-looking statements in this press release include, but are not limited to, statements regarding the proposed business combination, including the timing and structure of the transaction, the expected new investors in the combined company, assumptions relating to redemptions, the expected proceeds of the transaction and the anticipated uses of those proceeds, the equity value, cash position and initial market capitalization of the combined company, the benefits of the transaction, the expected ownership of current Markforged shareholders following the closing of the transaction, as well as statements about the expected growth of the additive manufacturing industry, the combined company’s competitive position in the industry, the anticipated growth of the combined company, the increased adoption of its products, and the expected benefits of product innovation. We cannot assure you that the forward-looking statements in this press release will prove to be accurate. These forward looking statements are subject to a number of risks and uncertainties, including, among others, general economic, political and business conditions; the inability of the parties to consummate the business combination or the occurrence of any event, change or other circumstances that could give rise to the termination of the business combination agreement; the outcome of any legal proceedings that may be instituted against the parties following the announcement of the business combination; the risk that the approval of the shareholders of one for the potential transaction is not obtained; failure to realize the anticipated benefits of the business combination, including as a result of a delay in consummating the potential transaction; the risk that the business combination disrupts current plans and operations as a result of the announcement and consummation of the business combination; the ability of the combined company to grow and manage growth profitably and retain its key employees; the amount of redemption requests made by one’s shareholders; the inability to obtain or maintain the listing of the combined company's securities following the business combination; costs related to the business combination; and those factors discussed under the header “Risk Factors” in the registration statement on Form S-4 to be filed by one with the SEC and those included under the header “Risk Factors” in the final prospectus of one related to its initial public offering. Furthermore, if the forward-looking statements prove to be inaccurate, the inaccuracy may be material. In light of the significant uncertainties in these forward-looking statements, you should not regard these statements as a representation or warranty by us or any other person that we will achieve our objectives and plans in any specified time frame, or at all. The forward-looking statements in this press release represent our views as of the date of this press release. We anticipate that subsequent events and developments will cause our views to change. However, while we may elect to update these forward-looking statements at some point in the future, we have no current intention of doing so except to the extent required by applicable law. You should, therefore, not rely on these forward-looking statements as representing our views as of any date subsequent to the date of this press release.