Quantumsphere Acquisition Corp.

Item 1.02 Termination of a Material Definitive Agreement As previously disclosed, on October 3, 2025, Quantumsphere Acquisition Corporation (the “Company”) entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Omnivate Global Ltd., SACH Pte. Ltd. (“SACH”), QUMS Pubco Ltd. and SACH Merge Sub Ltd. On September 1, 2026, the Company, QUMS Pubco Ltd. and SACH Merge Sub Ltd. (collectively, the “Purchaser Parties”) delivered written notice to SACH terminating the Merger Agreement pursuant to Section 13.2(a) thereof (the “Termination Notice”). Prior to delivering the Termination Notice, the Purchaser Parties had delivered notice to SACH on July 14, 2026 regarding certain matters under the Merger Agreement and providing the applicable thirty-day period contemplated by the Merger Agreement to address such matters. Following the expiration of such period, the Purchaser Parties elected to terminate the Merger Agreement in accordance with its terms. Accordingly, the transactions contemplated by the Merger Agreement will not be consummated. The Purchaser Parties reserved all rights and remedies available under the Merger Agreement and applicable law. The foregoing description is qualified in its entirety by reference to the Merger Agreement, previously filed as Exhibit 2.1 to the Company’s Current Report on Form 8-K filed on October 9, 2025, and the Termination Notice, filed as Exhibit 10.1 hereto, each of which is incorporated herein by reference.