Every 8-K that Quantumsphere Acquisition Corp. Units (QUMSU) has filed with the SEC in the last 24 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 8-K covers material events a company has to report between its quarterly reports, so if you follow QUMSU and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full QUMSU filings page.
Quantumsphere Acquisition Corp (QUMS) reported that it has terminated its Agreement and Plan of Merger, dated October 3, 2025, with Omnivate Global Ltd. and SACH Pte. Ltd. The Purchaser Parties delivered a Termination Notice to SACH on September 1, 2026 pursuant to Section 13.2(a) of the merger agreement.
The termination followed a notice sent on July 14, 2026 and the expiration of a 30-day period provided under the agreement to address certain matters. As a result, the transactions contemplated by the merger agreement will not be consummated. Quantumsphere Acquisition Corp intends to continue evaluating opportunities to complete an initial business combination.
Quantumsphere Acquisition Corporation amended its underwriting agreement to change how deferred underwriting commissions are calculated and paid. The commission will now equal 4.00% of the gross proceeds from the sale of the firm and option units, paid from the trust account when the initial business combination closes. This amount is capped at 4.00% of the funds remaining in the trust account after all properly submitted redemptions related to that business combination. The amendment also confirms the underwriters may waive the deferred underwriting commission before the transaction is completed.
Quantumsphere Acquisition Corporation reported that its business combination target, SACH Pte. Ltd., raised new equity financing in connection with their pending merger. On January 13, 2026, SACH Pte. Ltd. entered into a subscription agreement with Cypress Innovations Limited for 2,055 ordinary shares at $973.16 per share, providing gross proceeds of $2,000,000. On the same date, SACH Pte. Ltd. signed a separate subscription agreement with an individual investor for 103 ordinary shares at $973.16 per share, for gross proceeds of $100,000. These subscriptions support SACH Pte. Ltd.’s ongoing financing activities ahead of the planned business combination, and no securities of Quantumsphere Acquisition Corporation were issued in either transaction.
Quantumsphere Acquisition Corporation filed a current report explaining that its units, which each consist of one ordinary share and one right, will begin separate trading. Starting on or about September 30, 2025, holders of units may elect to trade the ordinary shares and the rights independently.
Units will continue to trade on the Nasdaq under the symbol QUMSU. Any separated ordinary shares are expected to trade under QUMS, and the separated rights are expected to trade under QUMSR. Holders who want to separate their units must have their brokers contact Continental Stock Transfer & Trust Co., the company’s transfer agent. The company also issued a press release, attached as an exhibit, announcing the start of separate trading.