QUMS on Nasdaq
Quantumsphere Acquisition Corp
In its 2026 annual report the company says: “We are a Cayman Islands exempted company with limited liability incorporated on July 23, 2024. We are formed for the purpose of entering into a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization or similar business combination with one or more businesses.”4 It is headquartered in New York, New York.1 Its shares trade on Nasdaq under the symbol QUMS.1
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Last updated Oct 21, 2026.
Overview
- TickerQUMS on Nasdaq1
- IndustryBlank Checks1
- HeadquartersNew York, New York1
- Incorporated inCayman Islands3
- Business address1185 6Th Ave., Suite 304, New York, Ny 100363
- Filer category, Emerging growth company3
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We are a Cayman Islands exempted company with limited liability incorporated on July 23, 2024. We are formed for the purpose of entering into a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization or similar business combination with one or more businesses (the “Business Combination”).4 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Financial statements
Every line of the income statement as filed: the last 1 fiscal year, latest first.2
| Period ending | 2026-03-31 |
|---|---|
| General and administrative expenses | $1.1M |
| Loss from operations | -$1.1M |
| Interest income | $8.3K |
| Interest earned on investments held in Trust Account | $2.0M |
| Total other income | $2.1M |
| Income (Loss) before income taxes | $978.2K |
| Net income (loss) | $978.2K |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 2 fiscal years (annual) or 2 quarters (quarterly), latest first.2
| Period ending | 2026-03-31 | 2025-03-31 |
|---|---|---|
| Cash | $187.9K | $64.4K |
| Other receivable | $3.1K | |
| Prepaid expenses and other current assets | $129.4K | $50.0K |
| Total Current Assets | $317.3K | $117.4K |
| Deferred offering costs | $131.6K | |
| Prepaid expenses, non-current | $36.9K | |
| Investments held in Trust Account | $84.8M | |
| Total Assets | $85.2M | $249.0K |
| Accrued expenses | $273.7K | $40.0K |
| Promissory note related party | $200.0K | |
| Total Current Liabilities | $273.7K | $240.0K |
| Deferred underwriting fee payable | $3.3M | |
| Total Liabilities | $3.6M | $240.0K |
| Ordinary shares subject to possible redemption, 8,280,000 shares and 0 shares at redemption value of $10.25 and $0 per share as of March 31, 2026 and March 31, 2025, respectively | $84.8M | |
| Ordinary shares, $0.0001 par value; 500,000,000 shares authorized; 3,126,650 shares and 2,898,000 issued and outstanding, respectively as of March 31, 2026 and March 31, 2025 (excluding 8,280,000 and 0 shares subject to possible redemption as of March 31, 2026 and March 31, 2025, respectively) | $313 | $290 |
| Additional paid-in capital | $24.7K | |
| Accumulated deficit | -$3.2M | -$16.0K |
| Total Shareholders (Deficit) Equity | -$3.2M | $9.0K |
| Total Liabilities, Ordinary Shares Subject to Possible Redemption and Shareholders (Deficit) Equity | $85.2M | $249.0K |
| Temporary equity, shares authorized | 8.3M shares | 0 shares |
| Ordinary shares subject to possible redemption, per share | $10.25 | $0.00 |
| Common stock, par value | $0.00 | $0.00 |
| Common stock, shares authorized | 500.0M shares | 500.0M shares |
| Common stock, shares issued | 3.1M shares | 2.9M shares |
| Common stock, shares outstanding | 3.1M shares | 2.9M shares |
| Period ending | 2026-03-31 | 2025-03-31 |
|---|---|---|
| Cash | $187.9K | $64.4K |
| Other receivable | $3.1K | |
| Prepaid expenses and other current assets | $129.4K | $50.0K |
| Total Current Assets | $317.3K | $117.4K |
| Deferred offering costs | $131.6K | |
| Prepaid expenses, non-current | $36.9K | |
| Investments held in Trust Account | $84.8M | |
| Total Assets | $85.2M | $249.0K |
| Accrued expenses | $273.7K | $40.0K |
| Promissory note related party | $200.0K | |
| Total Current Liabilities | $273.7K | $240.0K |
| Deferred underwriting fee payable | $3.3M | |
| Total Liabilities | $3.6M | $240.0K |
| Ordinary shares subject to possible redemption, 8,280,000 shares and 0 shares at redemption value of $10.25 and $0 per share as of March 31, 2026 and March 31, 2025, respectively | $84.8M | |
| Ordinary shares, $0.0001 par value; 500,000,000 shares authorized; 3,126,650 shares and 2,898,000 issued and outstanding, respectively as of March 31, 2026 and March 31, 2025 (excluding 8,280,000 and 0 shares subject to possible redemption as of March 31, 2026 and March 31, 2025, respectively) | $313 | $290 |
| Additional paid-in capital | $24.7K | |
| Accumulated deficit | -$3.2M | -$16.0K |
| Total Shareholders (Deficit) Equity | -$3.2M | $9.0K |
| Total Liabilities, Ordinary Shares Subject to Possible Redemption and Shareholders (Deficit) Equity | $85.2M | $249.0K |
| Temporary equity, shares authorized | 8.3M shares | 0 shares |
| Ordinary shares subject to possible redemption, per share | $10.25 | $0.00 |
| Common stock, par value | $0.00 | $0.00 |
| Common stock, shares authorized | 500.0M shares | 500.0M shares |
| Common stock, shares issued | 3.1M shares | 2.9M shares |
| Common stock, shares outstanding | 3.1M shares | 2.9M shares |
Cash flow is reported year to date, not quarter by quarter, so there are no separate quarterly figures.
Every line of the cash flow as filed: the last 1 fiscal year, latest first.2
| Period ending | 2026-03-31 |
|---|---|
| Net income (loss) | $978.2K |
| Interest earned on investments held in Trust Account | -$2.0M |
| Prepaid expenses and other current assets | -$116.3K |
| Accrued expenses and other current liabilities | $233.7K |
| Other receivable | $3.1K |
| Net cash used in operating activities | -$947.4K |
| Purchase of investments held in Trust Account | -$82.8M |
| Net cash used in investing activities | -$82.8M |
| Proceeds from sale of private units | $2.3M |
| Proceeds from Initial Public Offering | $82.8M |
| Payment of underwriter fees | -$586.5K |
| Payment of offering costs | -$429.0K |
| Proceeds from promissory note related party | $10.0K |
| Repayment of promissory note related party | -$210.0K |
| Net cash provided by financing activities | $83.9M |
| Net Changes in Cash | $123.5K |
| Reclassification of negative additional paid-in capital to accumulated deficit | $2.1M |
| Issuance of Public Rights net of issuance costs of $102,558 | $1.8M |
| Remeasurement of carrying value to redemption value | $8.3M |
| Deferred underwriting fee payable | $3.3M |
| Prior year deferred offering cost charged to additional paid-in capital | $131.6K |
No quarter-by-quarter statement was filed.
Corporate structure
Quantumsphere Acquisition Corp sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
Major holders of Quantumsphere Acquisition Corp
- WOLVERINE ASSET MANAGEMENT LLC Filed SCHEDULE 13G/A on Quantumsphere Acquisition Corp, latest Oct 6, 2026 (2 filings since Nov 7, 2025)
- W. R. Berkley Filed SCHEDULE 13G on Quantumsphere Acquisition Corp, latest Aug 6, 2026
- HIGHBRIDGE CAPITAL MANAGEMENT LLC Filed SCHEDULE 13G/A on Quantumsphere Acquisition Corp, latest Feb 17, 2026 (2 filings since Nov 14, 2025)
- Mizuho Financial Group Filed SCHEDULE 13G on Quantumsphere Acquisition Corp, latest Feb 12, 2026
- Whiteowl Holdings LLC Filed SCHEDULE 13D on Quantumsphere Acquisition Corp, latest Sep 15, 2025
- Quantumsphere Acquisition Corp New York, New York
Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What Quantumsphere Acquisition Corp reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.
Investments
Properties, in its own words
We do not own any real estate or other physical properties materially important to our operations. We maintain our principal executive offices are located at 1185 Avenue of the Americas, Suite 304, New York, NY 10036, and our telephone number is 212-612-1400.
Item 2 of the 10-K filed Jun 15, 2026.4
Leadership
Who has led Quantumsphere Acquisition Corp, and when. Pick a name to see everywhere that person has worked.
Board members and other officers (2)
- Board memberQi Gong Aug 11, 2025 to now8
- Board memberDaniel M. McCabe Aug 12, 2025 to now9
Timeline
- Oct 13, 20268-K Entered a material agreement; Regulation FD disclosure10
- Sep 2, 20268-K Ended a material agreement11
- Mar 11, 20268-K Entered a material agreement12
- Jan 23, 20268-K Entered a material agreement13
- Oct 10, 20258-K Other events14
- Oct 6, 20258-K Entered a material agreement; Regulation FD disclosure15
- Sep 29, 20258-K Other events16
- Aug 14, 20258-K Other events17
- Aug 7, 20258-K Entered a material agreement; Unregistered sale of shares; Executive or director change18
Filings
44 filings to the SEC since October 2021: 2 annual reports, 4 quarterly reports, 9 major events, 5 insider forms, 7 large holders, 17 other. The latest 20:
- Oct 13, 2026425 EDGAR
- Oct 13, 20268-K EDGAR
- Oct 6, 2026SCHEDULE 13G/A EDGAR
- Sep 2, 20268-K EDGAR
- Aug 14, 202610-Q EDGAR
- Aug 6, 2026SCHEDULE 13G EDGAR
- Jul 1, 202610-K/A EDGAR
- Jun 15, 202610-K EDGAR
- Mar 11, 20268-K EDGAR
- Feb 20, 202610-Q EDGAR
- Feb 17, 2026NT 10-Q EDGAR
- Feb 17, 2026SCHEDULE 13G/A EDGAR
- Feb 12, 2026SCHEDULE 13G EDGAR
- Jan 23, 20268-K EDGAR
- Nov 14, 202510-Q EDGAR
- Nov 14, 2025SCHEDULE 13G EDGAR
- Nov 7, 2025SCHEDULE 13G EDGAR
- Oct 10, 20258-K/A EDGAR
- Oct 6, 20258-K EDGAR
- Sep 29, 20258-K EDGAR
The 44 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Major holders
Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.
- WOLVERINE ASSET MANAGEMENT LLCSCHEDULE 13G/A, 2 filings Nov 7, 2025 to Oct 6, 202619
- W. R. BerkleySCHEDULE 13G, 1 filing Aug 6, 202620
- HIGHBRIDGE CAPITAL MANAGEMENT LLCSCHEDULE 13G/A, 2 filings Nov 14, 2025 to Feb 17, 202621
- Mizuho Financial GroupSCHEDULE 13G, 1 filing Feb 12, 202622
- Whiteowl Holdings LLCSCHEDULE 13D, 1 filing Sep 15, 202523
SEC filer profile
How Quantumsphere Acquisition Corp is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.
- Name on EDGARQuantumsphere Acquisition Corp1
- CIK0002070900
- Employer ID (EIN)00-00000004
- Filer statusNon-accelerated filer an emerging growth company; a smaller reporting company; a shell company4
- Incorporated inCayman Islands4
- Fiscal year endsMarch 311
- Industry code (SIC)6770 Blank Checks1
- SEC reviewing officeOffice of Real Estate & Construction, Division of Corporation Finance1
- Business address1185 6Th Ave., Suite 304, New York, NY 100361
- Phone212-612-14001
- Shares outstanding11,406,650 as of Aug 14, 20267
- Public float$82.5M as of Sep 30, 20254
- AuditorCBIZ CPAs P.C., Morristown, NJ PCAOB ID 199; no auditor attestation of internal control over financial reporting4
- On EDGAR sinceMay 30, 20251
- Filings44 in all: 8-K (8), 3 (5), 10-Q (4), CORRESP (4), SCHEDULE 13G (4), S-1/A (3), SCHEDULE 13G/A (2), UPLOAD (2)1
All 20 form types
10-K (1), 10-K/A (1), 424B4 (1), 425 (1), 8-A12B (1), 8-K/A (1), CERT (1), EFFECT (1), NT 10-Q (1), S-1 (1), S-1MEF (1), SCHEDULE 13D (1)
- Latest filingsAnnual report (10-K) Jun 15, 2026
Quarterly report (10-Q) Aug 14, 2026
Latest 8-K (8-K) Oct 13, 2026
Securities registered for trading
| Class | Symbol | Exchange |
|---|---|---|
| Units, each consisting of one ordinary share and one right | QUMSU | Nasdaq |
| Ordinary shares, par value $0.0001 per share | QUMS | Nasdaq |
| Rights, each right entitling the holder to receive one-seventh of one ordinary share | QUMSR | Nasdaq |
From the cover page of the 10-K filed Jun 15, 2026 (Section 12(b) of the Exchange Act).4
Risk factors and legal proceedings
Legal proceedings
We are not currently a party to any material litigation or other legal proceedings brought against us. We are also not aware of any legal proceeding, investigation or claim, or other legal exposure that has a more than remote possibility of having a material adverse effect on our business, financial condition or results of operations.
The opening of Item 3, Legal Proceedings.4
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8SEC EDGARQi Gong, Board member
- 9SEC EDGARDaniel M. McCabe, Board member
- 10
- 11SEC EDGAREnded a material agreement
- 12SEC EDGAREntered a material agreement
- 13SEC EDGAREntered a material agreement
- 14SEC EDGAROther events
- 15
- 16SEC EDGAROther events
- 17SEC EDGAROther events
- 18
- 19
- 20
- 21
- 22
- 23