{"url_path":"/sec/qums/10-k/2026/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"10-K","doc_date":"2026-06-15","source_url":"https://www.sec.gov/Archives/edgar/data/2070900/0001829126-26-006482-index.html","accession_number":"0001829126-26-006482","cik":"0002070900","ticker":"QUMS","issuer_name":"Quantumsphere Acquisition Corp","edgar_url":"https://www.sec.gov/Archives/edgar/data/2070900/0001829126-26-006482-index.html","primary_entity_key":"0002070900","primary_entity_name":"Quantumsphere Acquisition 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STATES**\n\n**SECURITIES AND EXCHANGE COMMISSION**\n\n**Washington, D.C. 20549**\n\n \n\n**FORM 10-K**\n\n \n\n☒ **ANNUAL REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**\n\n \n\n**For the fiscal year ended March 31, 2026**\n\n \n\n☐ **TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**\n\n \n\n**For the transition period from       to       **\n\n \n\n**Commission File Number 001-42555**\n\n \n\n**Quantumsphere Acquisition Corporation**\n\n(Exact name of registrant as specified in its charter)\n\n \n\n**Cayman Islands**\n \n**00-0000000\nN/A**\n\n(State or other jurisdiction of\n\nincorporation or organization)\n\n \n\n(IRS Employer\n\nIdentification No.)\n\n \n\n**1185 Avenue of the Americas, Suite 304**\n\n**New York, NY 10036**\n\n(Address of principal executive offices and zip code)\n\n \n\n**(212) 612-1400**\n\n(Registrant’s telephone number, including area code)\n\n \n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\n**Title of each class**\n \n**Trading Symbol(s)**\n \n**Name of each exchange on which registered**\n\nUnits, each consisting of one ordinary share and one right\n \n**QUMSU**\n \nThe Nasdaq Stock Market LLC\n\nOrdinary shares, par value $0.0001 per share\n \n**QUMS**\n \nThe Nasdaq Stock Market LLC\n\nRights, each right entitling the holder to receive one-seventh of one ordinary share\n \n**QUMSR**\n \nThe Nasdaq Stock Market LLC\n\n \n\nSecurities registered pursuant to Section 12(g) of the Act: **None.**\n\n \n\nIndicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ☐   No ☒\n\n \n\nIndicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐   No ☒\n\n \n\nIndicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒   No ☐\n\n \n\nIndicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or such shorter period that the registrant was required to submit such files). Yes ☒   No ☐\n\n \n\n \n\n \n\n \n\nIndicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act:\n\n \n\nLarge accelerated filer\n☐\nAccelerated filer\n☐\n\nNon-accelerated filer\n☒\nSmaller reporting company\n☒\n\n \n \nEmerging growth company\n☒\n\n \n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐\n\n \n\nIndicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. Yes ☐   No ☒\n\n \n\nIf securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐\n\n \n\nIndicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐\n\n \n\nIndicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☒   No ☐\n\n \n\nAs of September\n30, 2025, the last business day of the Registrant’s most recently completed second fiscal quarter, the aggregate market value of\nthe Registrant’s ordinary shares held by non-affiliates was approximately $82,468,800.\n\n \n\nAs of June\n12, 2026, there were 11,406,650 ordinary shares issued and outstanding.\n\n \n\n \n\n \n\n \n\n \n\n \n\n**Quantumsphere Acquisition Corporation**\n\n \n\n**TABLE OF CONTENTS**\n\n \n\n[PART I](#a_001)\n \n \n\n[Item 1.](#a_002)\n \n[Business](#a_002)\n \n1\n\n[Item 1A.](#a_003)\n \n[Risk Factors](#a_003)\n \n20\n\n[Item 1B.](#a_004)\n \n[Unresolved Staff Comments](#a_004)\n \n20\n\n[Item 1C.](#a_005)\n \n[Cybersecurity](#a_005)\n \n20\n\n[Item 2.](#a_006)\n \n[Properties](#a_006)\n \n20\n\n[Item 3.](#a_007)\n \n[Legal Proceedings](#a_007)\n \n20\n\n[Item 4.](#a_008)\n \n[Mine Safety Disclosures](#a_008)\n \n20\n\n \n \n \n \n \n\n[PART II](#a_009)\n \n \n\n[Item 5.](#a_010)\n \n[Market for Registrant’s Common Equity, Related Shareholders Matters and Issuer Purchases of Equity Securities](#a_010)\n \n21\n\n[Item 6.](#a_011)\n \n[Reserved](#a_011)\n \n22\n\n[Item 7.](#a_012)\n \n[Management’s Discussion and Analysis of Financial Condition and Results of Operations](#a_012)\n \n23\n\n[Item 7A.](#a_013)\n \n[Quantitative and Qualitative Disclosures About Market Risk](#a_013)\n \n29\n\n[Item 8.](#a_014)\n \n[Financial Statements and Supplementary Data](#a_014)\n \n29\n\n[Item 9.](#a_015)\n \n[Changes in and Disagreements With Accountants on Accounting and Financial Disclosure](#a_015)\n \n29\n\n[Item 9A.](#a_016)\n \n[Controls and Procedures](#a_016)\n \n29\n\n[Item 9B.](#a_017)\n \n[Other Information](#a_017)\n \n30\n\n[Item 9C.](#a_018)\n \n[Disclosure Regarding Foreign Jurisdictions that Prevent Inspections](#a_018)\n \n30\n\n \n \n \n \n \n\n[PART III](#a_019)\n \n \n\n[Item 10.](#a_020)\n \n[Directors, Executive Officers and Corporate Governance](#a_020)\n \n31\n\n[Item 11.](#a_021)\n \n[Executive Compensation](#a_021)\n \n38\n\n[Item 12.](#a_022)\n \n[Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters](#a_022)\n \n39\n\n[Item 13.](#a_023)\n \n[Certain Relationships and Related Transactions, and Director Independence](#a_023)\n \n40\n\n[Item 14.](#a_024)\n \n[Principal Accounting Fees and Services](#a_024)\n \n42\n\n \n \n \n \n \n\n[PART IV](#a_025)\n \n \n\n[Item 15.](#a_026)\n \n[Exhibits, Financial Statement Schedules](#a_026)\n \n43\n\n[Item 16.](#a_027)\n \n[Form 10-K Summary](#a_027)\n \n44\n\n \n\ni\n\n \n\n \n\n**CERTAIN TERMS**\n\n \n\nReferences to the “Company,” “our Company,” “Quantumsphere,” “our,” “us,” or “we” refer to Quantumsphere Acquisition Corporation, a blank check company incorporated on July 23, 2024, as a Cayman Islands exempted corporation and formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses, which we refer to throughout this Annual Report on Form 10-K for the year ended March 31, 2026 as our “target business.” References to our “Sponsor” refer to Whiteowl Holdings LLC, a Delaware limited liability company, an affiliate of our Chairman and our Chief Executive Officer and Chief Financial Officer. References to the “SEC” are to the U.S. Securities and Exchange Commission. References to our “initial public offering” or “IPO” refer to our initial public offering, which closed on August 7, 2025 (the “Closing Date”). References to “Public Shares” are to shares of our ordinary shares sold as part of the units in our initial public offering. References to “public shareholders” are to the holders of our Public Shares.\n\n \n\nii\n\n \n\n \n\n**SPECIAL NOTE REGARDING FORWARD LOOKING STATEMENTS**\n\n \n\nCertain statements in this Annual Report on Form 10-K (this “Report” or “Annual Report”) may constitute “forward looking statements” for purposes of the federal securities laws. Our forward-looking statements include, but are not limited to, statements regarding our or our management team’s expectations, hopes, beliefs, intentions or strategies regarding the future and the statements under “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” regarding our financial position, business strategy and the plans and objectives of management for future operations. Because we are a blank check company formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses, many of our forward-looking statements relate to our ability to identify and complete such a business combination. In addition, any statements that refer to projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions, are forward looking statements. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “would” and similar expressions may identify forward looking statements, but the absence of these words does not mean that a statement is not forward looking. Forward looking statements in this Annual Report on Form 10-K may include, for example, statements about:\n\n \n\n \n●\nour ability to select an appropriate target business or businesses;\n\n \n \n \n\n \n●\nour ability to complete our initial business combination;\n\n \n \n \n\n \n●\nour expectations around the performance of the prospective target business or businesses;\n\n \n \n \n\n \n●\nour success in retaining or recruiting, or changes required in, our officers, key employees or directors following our initial business combination;\n\n \n \n \n\n \n●\nour officers and directors allocating their time to other businesses and potentially having conflicts of interest with our business or in approving our initial business combination;\n\n \n \n \n\n \n●\nour potential ability to obtain additional financing to complete our initial business combination;\n\n \n\n \n●\nour financial performance; and\n\n \n \n \n\n \n●\nthe other risk and uncertainties discussed in “Item 1A. Risk Factors,” elsewhere in this Annual Report on Form 10-K and in our other filings with the SEC.\n\n \n\nThe forward-looking statements contained in this Annual Report on Form 10-K are based on our current expectations and beliefs concerning future developments and their potential effects on us. These forward-looking statements are subject to a number of risks, uncertainties (some of which are beyond our control) or other assumptions that may cause actual results or performance to be materially different from those expressed or implied by these forward-looking statements. These risks and uncertainties include, but are not limited to, those factors described under “Part I, Item 1A. Risk Factors.” Should one or more of these risks or uncertainties materialize, or should any of our assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by applicable securities laws.\n\n \n\niii\n\n \n\n \n\n**PART I**"}