Quartzsea Acquisition Corp SEC filings QSEA
Quartzsea Acquisition Corp has 77 filings in SEC EDGAR's recent list, going back to Dec 23, 2024. Its latest annual report, Form 10-K, was filed on Mar 16, 2026 for the period ended Nov 30, 2025. The latest quarterly report (Form 10-Q) was filed on Oct 9, 2026, covering the quarter ended Aug 31, 2026. The most recent current report (Form 8-K) was filed on Oct 20, 2026 (other events). The company's fiscal year ends on November 30.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Oct 20, 2026 | Oct 20, 2026 |
| 8-K |
Current report
Material agreement, Bylaw or fiscal year change, Shareholder vote results
|
Oct 19, 2026 | Oct 13, 2026 |
| 10-Q | Quarterly report | Oct 9, 2026 | Aug 31, 2026 |
| DEFR14A | Filing | Oct 1, 2026 | — |
| DEFR14A | Filing | Sep 29, 2026 | — |
| DEF 14A | Proxy statement | Sep 29, 2026 | Oct 13, 2026 |
| 8-K |
Current report
Other events
|
Sep 21, 2026 | Sep 19, 2026 |
| PRE 14A | Preliminary proxy statement | Sep 17, 2026 | Sep 16, 2026 |
| 8-K |
Current report
Listing notice
|
Aug 25, 2026 | Aug 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 16, 2026 | — |
| 10-Q | Quarterly report | Jul 14, 2026 | May 31, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 24, 2026 | Jun 23, 2026 |
| 8-K |
Current report
Other events
|
Jun 18, 2026 | Jun 17, 2026 |
| DEFR14A | Filing | Jun 17, 2026 | — |
| 8-K/A |
Amended current report
Other events
|
Jun 16, 2026 | Jun 16, 2026 |
| 8-K |
Current report
Other events
|
Jun 16, 2026 | Jun 16, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 8, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jun 5, 2026 | — |
| DEFR14A | Filing | Jun 1, 2026 | — |
| DEFR14A | Filing | May 29, 2026 | — |
| DEF 14A | Proxy statement | May 29, 2026 | Jun 16, 2026 |
| PRE 14A | Preliminary proxy statement | May 15, 2026 | May 15, 2026 |
| 425 | Filing | May 15, 2026 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
May 15, 2026 | May 13, 2026 |
| 10-Q | Quarterly report | Apr 23, 2026 | Feb 28, 2026 |
| NT 10-Q | Filing | Apr 14, 2026 | Feb 28, 2026 |
| 10-K/A | Amended annual report | Apr 9, 2026 | Nov 30, 2025 |
| 8-K |
Current report
Material agreement, Agreement ended
|
Mar 18, 2026 | Mar 17, 2026 |
| 10-K | Annual report | Mar 16, 2026 | Nov 30, 2025 |
| 8-K |
Current report
Material agreement
|
Mar 11, 2026 | Mar 3, 2026 |
| NT 10-K | Filing | Mar 2, 2026 | Nov 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 13, 2025 | — |
| 10-Q | Quarterly report | Oct 20, 2025 | Aug 31, 2025 |
| NT 10-Q/A | Nt 10-q | Oct 15, 2025 | Aug 31, 2025 |
| NT 10-Q | Filing | Oct 15, 2025 | Sep 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 10, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 12, 2025 | — |
| 10-Q | Quarterly report | Jul 10, 2025 | May 31, 2025 |
| 8-K |
Current report
Material agreement
|
Jun 6, 2025 | Jun 6, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 6, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 27, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| 8-K |
Current report
Other events
|
May 8, 2025 | May 8, 2025 |
| 10-Q | Quarterly report | Apr 30, 2025 | Feb 28, 2025 |
| SCHEDULE 13D | Ownership over 5% (active) | Apr 3, 2025 | — |
| 3 | Initial insider ownership | Apr 3, 2025 | Mar 14, 2025 |
| 3 | Initial insider ownership | Mar 28, 2025 | Mar 14, 2025 |
| 3 | Initial insider ownership | Mar 28, 2025 | Mar 14, 2025 |
| 3 | Initial insider ownership | Mar 28, 2025 | Mar 14, 2025 |
| 8-K |
Current report
Other events
|
Mar 27, 2025 | Mar 19, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 25, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 21, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Other events
|
Mar 20, 2025 | Mar 14, 2025 |
| 424B4 | Prospectus | Mar 19, 2025 | — |
| CERT | Filing | Mar 18, 2025 | — |
| 8-A12B | Filing | Mar 18, 2025 | — |
| S-1MEF | Filing | Mar 17, 2025 | — |
| EFFECT | Filing | Mar 14, 2025 | — |
| CORRESP | Letter to the SEC | Mar 14, 2025 | — |
| CORRESP | Letter to the SEC | Mar 14, 2025 | — |
| S-1/A | Amended registration statement | Mar 13, 2025 | — |
| S-1/A | Amended registration statement | Mar 12, 2025 | — |
| CORRESP | Letter to the SEC | Mar 12, 2025 | — |
| UPLOAD | Letter from the SEC | Mar 12, 2025 | — |
| S-1/A | Amended registration statement | Mar 11, 2025 | — |
| S-1 | Registration statement | Feb 24, 2025 | — |
| CORRESP | Letter to the SEC | Feb 21, 2025 | — |
| UPLOAD | Letter from the SEC | Feb 10, 2025 | — |
| DRS/A | Filing | Feb 3, 2025 | — |
| CORRESP | Letter to the SEC | Jan 31, 2025 | — |
| UPLOAD | Letter from the SEC | Jan 17, 2025 | — |
| DRS | Filing | Dec 23, 2024 | — |
Showing 77 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Blank Checks (SIC 6770)
- Listed as
- QSEA (Nasdaq), QSEAR (Nasdaq), QSEAU (Nasdaq)
- Fiscal year ends
- November 30
- Incorporated in
- Cayman Islands
- Headquarters
- New York, NY
- SEC filer status
- , Emerging growth company
- SEC CIK
- 2047455
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.