Current Report · Items 8.01 · 8-K

Quartzsea Acquisition Corporation

QSEANASDAQEQUITYCurrent

Other Events

Filed Sep 21, 2026Accepted Sep 21, 2026, 4:30 PM EDTCIK 2047455Accession 0001829126-26-010281

Company context

We are a newly formed blank check company incorporated as a Cayman Islands exempted company on November 5, 2024 under the laws of the Cayman Islands with limited liability, formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization or similar business combination with one or more businesses or entities, which we refer to throughout this prospectus as our initial business combination. Our efforts to identify a prospective target business will not be limited to a particular geographic region or industry. We do not have any specific business combination under consideration and we have not (nor has anyone on our behalf), directly or indirectly, contacted any prospective target business or had any substantive discussions, formal or otherwise, with respect to such a transaction with our company. Our ability to identify and evaluate a target company may be impacted by significant competition among other SPACs in pursuing a business combination transaction candidate and the significant competition may impact the attractiveness of the acquisition terms that we will be able to negotiate.

Current securities

QSEANASDAQ · EQUITY · Current QSEARNASDAQ · RIGHT · Current QSEAUNASDAQ · UNIT · Current

Recent company filings

Registered securities in this filing

Quartzsea Acquisition Corporation · 8-K · Filed 2026-09-21

As filed in this accession. Current/historical status below comes from the governed listing record; the cover itself remains exact to this filing.

Units, each consisting of one ordinary share and one right

Symbol: QSEAU
Exchange: NASDAQ
Classification: UNIT
Status: Current

Filing context

Context: From2026-09-192026-09-19_custom_UnitsEachConsistingOfOneOrdinaryShareAndOneRightMember

Dimensions: us-gaap:StatementClassOfStockAxis

Ordinary shares, par value $0.0001 per share

Symbol: QSEA
Exchange: NASDAQ
Classification: COMMON
Status: Current

Filing context

Context: From2026-09-192026-09-19_custom_OrdinarySharesParValue0.0001PerShareMember

Dimensions: us-gaap:StatementClassOfStockAxis

Rights, each right entitling the holder to receive one-fifth of one ordinary share

Symbol: QSEAR
Exchange: NASDAQ
Classification: RIGHT
Status: Current

Filing context

Context: From2026-09-192026-09-19_custom_RightsEachRightEntitlingHolderToReceiveOnefifthOfOneOrdinaryShareMember

Dimensions: us-gaap:StatementClassOfStockAxis

Accession 000182912626010281 · 3 registered-security cover members

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Disclosure sections

Items 8.01

Select an item to read the extracted section. The as-filed document remains the primary evidence.

Item 8.01Item 8.01 - Other Events

Item 8.01 Other Events. On September 19, 2026, Quartzsea Acquisition Corporation (the “Company”) caused an aggregate of $175,000 to be deposited into the Company’s trust account for the benefit of its public shareholders in order to extend the date by which the Company must consummate its initial business combination from September 19, 2026 to October 19, 2026. The extension was made pursuant to the amendments to the Company’s Second Amended and Restated Memorandum of Association and Investment Management Trust Agreement approved by the Company’s shareholders on June 23, 2026, which permit the Company to extend the deadline to consummate its initial business combination on a month-to-month basis through October 19, 2026. For each one-month extension, the Company is required to deposit into the trust account the lesser of (i) $175,000 or (ii) $0.033 for each then-outstanding public share.