Filed by Churchill Capital Corp IX pursuant to Rule 425 under the Securities Act of 1933, as amended Subject Company: Churchill Capital Corp IX (Registration No. 333-290370) On April 7, 2026, Plus Automation, Inc. (“PlusAI”) held a webcast to discuss updates to its business. The following presentation accompanied the webcast: Driving an Intelligent Future April 2026 CopC yo rp igy hrt ig © ht 2 © 02 2 60 P 2l6 u P sA lu I, sIA nIc , .I n Ac ll. r A ig llh rt ig sh rt es s e re rv se er dv . e d | . 1 | Churchill Capital About This Presentation This presentation is provided for informational purposes only and has been prepared to assist interested parties in making their own evaluation with respect to a proposed business combination (the“proposedtransaction”) between PlusAI Automation, Inc. (“PlusAI”) and Churchill Capital Corp. IX(“ChurchillIX”) and potential related offering of the securities of Churchill IX or PlusAI in a private placement (the“proposedtransactions”) and for no other purpose. By accepting this presentation, each recipient agrees: (i) to maintain the confidentiality of all information that is contained in this presentation and not already in the public domain; (ii) to return or destroy all copies of this presentation or portions thereof in its possession following the request for the return or destruction of such copies; and (iii) to use this presentation for the sole purpose of evaluating the proposed transactions. Any reproduction or distribution of this presentation, in whole or in part, or the disclosure of its contents, without the prior consent of Churchill IX and PlusAI is prohibited. The information contained herein does not purport to be all inclusive and none of PlusAI, Churchill IX nor any of their respective affiliates, directors, officers, employees or advisers or