Form 8-K

8-K — Quartzsea Acquisition Corp

Accession: 0001829126-26-006786

Filed: 2026-06-24

Period: 2026-06-23

CIK: 0002047455

SIC: 6770 (BLANK CHECKS)

Item: Submission of Matters to a Vote of Security Holders

Documents

8-K — quartzsea_8k.htm (Primary)

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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): June 23, 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 304

New York, NY

10036

(Address of principal executive offices)

(Zip Code)

Registrant’s telephone number, including area code: (212) 612-1400

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 5.07

Submission of a Matter to a Vote of Security Holders.

On June 23, 2026, Quartzsea Acquisition Corporation

(the “Company”) held an Extraordinary General Meeting of Shareholders (the “Extraordinary General Meeting”). The

record date for shareholders entitled to notice of, and to vote at, the Extraordinary General Meeting was May 29, 2026. As of the record

date, there were 11,409,900 ordinary shares issued and outstanding and entitled to vote at the Extraordinary General Meeting. Of these

shares, 9,439,830 shares (representing approximately 82.73% of the outstanding ordinary shares), constituting a quorum, were present by

virtual attendance or represented by proxy.

At the Extraordinary General Meeting, three proposals

were submitted to the Company’s shareholders, each as described in more detail in the Company’s definitive proxy statement.

The final voting results were as follows:

Proposal 1 – Extension Amendment

The Company’s shareholders approved an amendment

to the Company’s Second Amended and Restated Memorandum of Association extending the deadline to consummate an initial business

combination from June 19, 2026 to October 19, 2026, or such earlier date as the Board of Directors may determine, with the Company permitted

to extend such date on a month-to-month basis for up to four additional one-month extensions.

For

Against

Abstain

7,459,067

1,980,763

Proposal 2 – Trust Agreement Amendment

The Company’s shareholders approved a corresponding

amendment to the Company’s Investment Management Trust Agreement, dated March 17, 2025, with Continental Stock Transfer & Trust

Company, extending the trust termination date from June 19, 2026 to October 19, 2026 on the same month-to-month basis described above.

For each one-month extension, the Company will deposit into the trust account the lesser of (i) $175,000 or (ii) $0.033 per outstanding

public share.

For

Against

Abstain

7,459,067

1,980,763

Proposal 3 – Adjournment Proposal

The Company’s shareholders approved a Proposal

to authorize the chairman of the Extraordinary General Meeting to adjourn to a later date or dates, if necessary, to permit further solicitation

and voting of proxies if there were insufficient votes to approve Proposal 1 or Proposal 2.

For

Against

Abstain

7,459,067

1,980,763

All three Proposals were approved. The Company

intends to file an amendment to its Second Amended and Restated Memorandum of Association with the Registrar of Companies of the Cayman

Islands promptly following the Extraordinary General Meeting.

In connection with the Extraordinary General Meeting,

holders of 1,275,382 ordinary shares exercised their redemption rights.

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: June 23, 2026

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Entity Incorporation, State or Country Code

Entity Address, Address Line One

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Entity Address, Address Line Two

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Entity Address, City or Town

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Security Exchange Name

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Ordinary shares, par value $0.0001 per share

Title of 12(b) Security

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QSEA

Security Exchange Name

NASDAQ

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

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