QSEA on Nasdaq

Quartzsea Acquisition Corp

Quartzsea Acquisition Corp is a blank check company in the Cayman Islands.1 It is headquartered in New York, New York.1 Its shares trade on Nasdaq under the symbol QSEA.1

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Last updated Oct 20, 2026.

Overview

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  • TickerQSEA on Nasdaq1
  • IndustryBlank Checks1
  • HeadquartersNew York, New York1
  • Incorporated inCayman Islands2
  • Business addressSuite 331, 1185 6Th Ave, New York, Ny 100362
  • Filer categoryNon-accelerated filer, Smaller reporting company, Emerging growth company2

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On March 19, 2025, the Company consummated its initial public offering (the “IPO”) of 7,200,000 units (the “Units”). Each Unit consists of one ordinary share, par value $0.0001 per share, of the Company (the “Ordinary Shares”) and one-fifth (1/5) of one right to receive one Ordinary Share upon the consummation of the Company’s initial business combination. The Units were sold at an offering price of $10.00 per Unit, generating total gross proceeds of $72,000,000. The Company also granted the underwriters a 45-day option to purchase up to an additional 1,080,000 units to cover over-allotments, if any, which option was exercised in full, resulting in the sale of an aggregate of 8,280,000 Units and total gross proceeds of $82,800,000.3 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.4

Period ending2025-11-30
General and administrative expenses$1.9M
Loss from operations-$1.9M
Interest income$14.4K
Interest earned on investments held in Trust Account$2.4M
Total other income$2.4M
Income (Loss) before income taxes$511.0K
Net income (loss)$511.0K

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Corporate structure

Quartzsea 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 Quartzsea Acquisition Corp

  • Karpus Management, Inc. Filed SCHEDULE 13G/A on Quartzsea Acquisition Corp, latest Aug 14, 2026 (3 filings since Jun 6, 2025)
  • WOLVERINE ASSET MANAGEMENT LLC Filed SCHEDULE 13G/A on Quartzsea Acquisition Corp, latest Jul 16, 2026 (2 filings since Oct 10, 2025)
  • Feis Equities LLC Filed SCHEDULE 13G/A on Quartzsea Acquisition Corp, latest Jun 8, 2026 (3 filings since Mar 25, 2025)
  • Harraden Circle Investments, LLC Filed SCHEDULE 13G/A on Quartzsea Acquisition Corp, latest Aug 14, 2025 (2 filings since Mar 21, 2025)
  • TD SECURITIES (USA) LLC Filed SCHEDULE 13G/A on Quartzsea Acquisition Corp, latest Aug 12, 2025 (2 filings since May 13, 2025)
  • Blue Jay Investment LLC Filed SCHEDULE 13D on Quartzsea Acquisition Corp, latest Apr 3, 2025
  • Quartzsea 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 Quartzsea 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

ItemLatestA year beforeChange
Cash and cash equivalents$04 Nov 30, 2025$04 Nov 30, 2024

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 302, New York, NY 10036, and our telephone number is 212-612-1400.

Item 2 of the 10-K filed Mar 16, 2026.3

Leadership

Who has led Quartzsea Acquisition Corp, and when. Pick a name to see everywhere that person has worked.

Chief executive

  1. Qi Gong2025

Chair

  1. Qi Gong2025

Chief financial officer

  1. Qi Gong2025
  • Chief executive officerQi Gong Mar 28, 2025 to Mar 28, 20257
  • ChairQi Gong Mar 28, 2025 to Mar 28, 20257
  • Chief financial officerQi Gong Mar 28, 2025 to Mar 28, 20257

Timeline

  1. Sep 21, 20268-K Other events8
  2. Aug 25, 20268-K Listing notice or transfer9
  3. Jun 24, 20268-K Shareholder vote10
  4. Jun 18, 20268-K Other events11
  5. Jun 16, 20268-K Other events12
  6. Jun 16, 20268-K Other events13
  7. May 15, 20268-K Entered a material agreement; Regulation FD disclosure14
  8. Mar 18, 20268-K Entered a material agreement; Ended a material agreement15
  9. Mar 11, 20268-K Entered a material agreement16
  10. Jun 6, 20258-K Entered a material agreement17
  11. May 8, 20258-K Other events18
  12. Mar 28, 2025New chief executive Qi Gong becomes CEO7
  13. Mar 27, 20258-K Other events19

Filings

72 filings to the SEC since October 2021: 2 annual reports, 6 quarterly reports, 13 major events, 4 insider forms, 14 large holders, 33 other. The latest 20:

  1. Oct 9, 202610-Q EDGAR
  2. Oct 1, 2026DEFR14A EDGAR
  3. Sep 29, 2026DEFR14A EDGAR
  4. Sep 29, 2026DEF 14A EDGAR
  5. Sep 21, 20268-K EDGAR
  6. Sep 17, 2026PRE 14A EDGAR
  7. Aug 25, 20268-K EDGAR
  8. Aug 14, 2026SCHEDULE 13G/A EDGAR
  9. Aug 6, 2026SCHEDULE 13G EDGAR
  10. Jul 16, 2026SCHEDULE 13G/A EDGAR
  11. Jul 14, 202610-Q EDGAR
  12. Jun 24, 20268-K EDGAR
  13. Jun 18, 20268-K EDGAR
  14. Jun 17, 2026DEFR14A EDGAR
  15. Jun 16, 20268-K/A EDGAR
  16. Jun 16, 20268-K EDGAR
  17. Jun 8, 2026SCHEDULE 13G/A EDGAR
  18. Jun 5, 2026SCHEDULE 13G/A EDGAR
  19. Jun 1, 2026DEFR14A EDGAR
  20. May 29, 2026DEFR14A EDGAR

The 72 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.

SEC filer profile

How Quartzsea 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 EDGARQuartzsea Acquisition Corp1
  • CIK0002047455
  • Employer ID (EIN)00-00000003
  • Filer statusNon-accelerated filer an emerging growth company; a smaller reporting company; a shell company3
  • Incorporated inCayman Islands3
  • Fiscal year endsNovember 301
  • Industry code (SIC)6770 Blank Checks1
  • SEC reviewing officeOffice of Real Estate & Construction, Division of Corporation Finance1
  • Business addressSuite 331, 1185 6Th Ave, New York, NY 100361
  • Phone212-612-14001
  • Shares outstanding10,134,518 as of Oct 9, 20266
  • Public float$84.8M as of May 31, 20253
  • AuditorCBIZ CPAs P.C., Morristown, NJ PCAOB ID 1993
  • On EDGAR sinceDec 23, 20241
  • Filings75 in all: 8-K (12), SCHEDULE 13G (8), SCHEDULE 13G/A (8), 10-Q (6), CORRESP (5), DEFR14A (5), 3 (4), S-1/A (3)1
    All 27 form types

    UPLOAD (3), DEF 14A (2), NT 10-Q (2), PRE 14A (2), 10-K (1), 10-K/A (1), 424B4 (1), 425 (1), 8-A12B (1), 8-K/A (1), CERT (1), DRS (1), DRS/A (1), EFFECT (1), NT 10-K (1), NT 10-Q/A (1), S-1 (1), S-1MEF (1), SCHEDULE 13D (1)

  • Latest filingsAnnual report (10-K) Mar 16, 2026
    Quarterly report (10-Q) Oct 9, 2026
    Proxy statement (DEF 14A) Sep 29, 2026
    Latest 8-K (8-K) Sep 21, 2026

Securities registered for trading

ClassSymbolExchange
Units, each consisting of one ordinary share and one rightQSEAUNasdaq
Ordinary shares, par value $0.0001 per shareQSEANasdaq
Rights, each right entitling the holder to receive one-fifth of one ordinary shareQSEARNasdaq

From the cover page of the 10-K filed Mar 16, 2026 (Section 12(b) of the Exchange Act).3

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.3

Sources

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