Quartzsea Acquisition extends deal deadline to Nov. 19

Quartzsea Acquisition Corp deposited an aggregate of $100,000 into its trust account for the benefit of public shareholders on October 20, 2026.

Rhea-AI Filing Summary

Quartzsea Acquisition Corp deposited an aggregate of $100,000 into its trust account for the benefit of public shareholders on October 20, 2026. The deposit enabled a one-month extension of the period to complete an initial business combination, moving the deadline from October 19, 2026, to November 19, 2026.

8-K Event Classification

Item 8.01 — Other Events

1 item

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Key Figures

Trust-account deposit: $100,000 Extension period: One month Previous business-combination deadline: October 19, 2026 +1 more

4 metrics

Trust-account deposit $100,000 Deposited for the benefit of public shareholders on October 20, 2026

Extension period One month Extension of the period to consummate an initial business combination

Previous business-combination deadline October 19, 2026 Deadline before the extension

Extended business-combination deadline November 19, 2026 Deadline after the extension

Key Terms

initial business combination, trust account, public shareholders

3 terms

initial business combination financial

"consummate its initial business combination"

An initial business combination is the deal in which a special-purpose acquisition company (SPAC) merges with or acquires an operating business to bring that business onto public markets. Think of the SPAC as an empty shell that raises money from investors, then uses that cash to buy a private company—this transaction turns the private company into a public one and often changes its ownership, valuation, and access to capital, so investors should watch for shifts in risk, future growth prospects, and shareholder rights.

trust account financial

"deposited into the Company’s trust account"

A trust account is a special bank or brokerage account where assets are held and managed by a designated person or firm (the trustee) for the benefit of another person or group (the beneficiary). It matters to investors because it separates assets from personal or corporate funds, can protect assets, control how and when money is used, and may affect tax or legal rights—think of it as a locked drawer opened only under agreed rules.

public shareholders financial

"for the benefit of its public shareholders"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How much did QSEA deposit into its trust account?

Quartzsea Acquisition Corp deposited an aggregate of $100,000 into its trust account on October 20, 2026, for the benefit of its public shareholders.

What is QSEA's new business-combination deadline?

Quartzsea Acquisition Corp extended the period to consummate its initial business combination by one month, from October 19, 2026, to November 19, 2026.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/20/2026 - 04:50 PM EDT Accepted by SEC EDGAR 10/20/2026 - 04:50 PM EDT Learn about SEC filing dates

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or Section 15(d) of the
Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 20, 2026

Quartzsea Acquisition Corporation

(Exact name of registrant as specified in its charter)

Cayman Islands		001-42555		00-0000000N/A
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

1185 Avenue of the Americas, Suite 337 New York, NY		10036
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (212) 574-4425

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation to the registrant under any of the following provisions:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of exchange on which registered
Units, each consisting of one ordinary share and one right		QSEAU		The Nasdaq Stock Market LLC
Ordinary shares, par value $0.0001 per share		QSEA		The Nasdaq Stock Market LLC
Rights, each right entitling the holder to receive one-fifth of one ordinary share		QSEAR		The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If 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. ☐

Item 8.01 Other Events.

On October 20, 2026, Quartzsea Acquisition Corporation (the “Company”) caused an aggregate of $100,000 to be deposited into the Company’s trust account for the benefit of its public shareholders, enabling the Company to extend the period of time it has to consummate its initial business combination by one month, from October 19, 2026, to November 19, 2026.

1

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

QUARTZSEA ACQUISITION CORPORATION
By:	/s/ Qi Gong
Name:	Qi Gong
Title:	Chief Executive Officer
Date: October 20, 2026

2

Filing Exhibits & Attachments

4 documents

Other Documents

• EX-101 XBRL SCHEMA FILE 4.0 KB
• EX-101 XBRL DEFINITION FILE 26.6 KB
• EX-101 XBRL LABEL FILE 36.9 KB
• EX-101 XBRL PRESENTATION FILE 25.3 KB