Filed by Plum Acquisition Corp. I

Pursuant to Rule 425 Under the Securities Act of 1933

and deemed filed pursuant to Rule 14a-12

under the Securities Exchange Act of 1934, as amended

Subject Company: Plum Acquisition Corp. I

Commission File No. 001-40218

On March 5, 2023, Ari Buchler, a Senior Advisor to Plum Acquisition Corp. I, which is party to a previously disclosed Business Combination Agreement with Sakuu Corporation, among other parties, through his LinkedIn account, shared the following post:

Additional Information and Where to Find It / Non-Solicitation

In connection with the proposed transaction, Plum intends to file a Registration Statement on Form S-4 (the “Registration Statement”) with the SEC, which will include a document that serves as a prospectus and proxy statement of Plum, referred to as a proxy statement/prospectus, and certain related documents, to be used at the meeting of Plum’s stockholders to approve the proposed business combination and related matters. The Registration Statement will be sent to the stockholders of Plum. Plum and Sakuu also will file other documents regarding the proposed transaction with the SEC. Before making any voting decision, investors and security holders of Plum are urged to read the Registration Statement, the 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 security holders will be able to obtain free copies of the Registration Statement, the proxy statement/prospectus and all other relevant documents filed or that will be filed with the SEC by Plum and Sakuu through the website maintained by the SEC at www.sec.gov.

Participants in Solicitation

Plum and Sakuu and their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from Plum’s stockholders in connection with the proposed transaction. Information about Plum’s directors and executive officers and their ownership of Plum’s securities is set forth in Plum’s filings with the SEC. To the extent that holdings of Plum’s securities have changed since the amounts printed in Plum’s Registration Statement on Form S-1, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. A list of the names of such directors and executive officers and information regarding their interests in the business combination will be contained in the proxy statement/prospectus when available. You may obtain free copies of these documents as described in the preceding paragraph.

No Offer or Solicitation

These communications do not constitute an offer to sell or the solicitation of an offer to buy any securities, or a solicitation of any vote or 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 offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended, or an exemption therefrom.

Forward-Looking Statements

This communication contains certain forward-looking statements within the meaning of the federal securities laws with respect to the proposed transaction between Sakuu and Plum. These forward-looking statements generally are identified by the words “believe,” “project,” “expect,” “anticipate,” “estimate,” “intend,” “strategy,” “future,” “opportunity,” “plan,” “may,” “should,” “will,” “would,” “will be,” “will continue,” “will likely result,” and similar expressions. These forward-looking statements include, but are not limited to, statements regarding Sakuu’s expected technology and product offerings, Sakuu’s ability to produce its modules and printing platforms at a commercial level or obtain licensing agreements for its battery technology, the availability of equity or debt financing on acceptable terms, if at all, and the capitalization of Sakuu after giving effect to the proposed business combination. These statements are based on various assumptions, whether or not identified in this press release, and on the current expectations of Sakuu’s and Plum’s management and are not predictions of actual performance. These forward-looking statements are provided for illustrative purposes only and are not intended to serve as, and must not be relied upon by any investors as, a guarantee, an assurance, a prediction or a definitive statement of fact or probability. Forward-looking statements are predictions, projections and other statements about

future events that are based on current expectations and assumptions and are subject to risks and uncertainties that may cause Sakuu’s and Plum’s activities or results to differ significantly from those expressed in any forward-looking statement, including changes in domestic and foreign business, market, financial, political and legal conditions; the inability of the parties to successfully or timely consummate the proposed business combination, including the risk that any regulatory approvals are not obtained, are delayed or are subject to unanticipated conditions that could adversely affect Sakuu or the expected benefits of the proposed business combination; failure to obtain the approval of the equity holders of Sakuu or Plum; failure to realize the anticipated benefits of the proposed business combination; risks related to the rollout of Sakuu’s business and the timing of expected business milestones; the effects of competition on Sakuu’s business; supply shortages in the materials necessary for the production of Sakuu’s modules and printing platforms; the inability of Sakuu to obtain licensing agreements for its technology; the amount of redemption requests made by Plum’s public equity holders. If any of these risks materialize or our assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. Many factors could cause actual future events to differ materially from the forward-looking statements in this communication. There may be additional risks that neither Sakuu or Plum presently know or that Sakuu and Plum currently believe are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. You should carefully consider the risks and uncertainties described in the “Risk Factors” section of Plum’s Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, the registration statement on Form S-4 and other documents filed by Plum 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 they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and Sakuu and Plum assume no obligation and do not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise. Neither Sakuu nor Plum gives any assurance that either Sakuu or Plum will achieve its expectations.