# EDGAR Filing Document

**Accession Number:** 0002047455
**File Stem:** 0001829126-26-002190
**Filing Date:** 2026-3
**Character Count:** 10853
**Document Hash:** 642e7df744fc89069b3cfc0411eef504
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001829126-26-002190.hdr.sgml**: 20260311

**ACCESSION NUMBER**: 0001829126-26-002190

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20260303

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260311

**DATE AS OF CHANGE**: 20260311

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Quartzsea Acquisition Corp
- **CENTRAL INDEX KEY:** 0002047455
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1130

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42555
- **FILM NUMBER:** 26742685

**BUSINESS ADDRESS:**
- **STREET 1:** SUITE 331
- **STREET 2:** 1185 6TH AVE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036
- **BUSINESS PHONE:** 212-612-1400

**MAIL ADDRESS:**
- **STREET 1:** SUITE 331
- **STREET 2:** 1185 6TH AVE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10036

?xml version='1.0' encoding='ASCII'?

**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): March 3, 2026

**<u>Quartzsea Acquisition Corporation</u>**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Cayman Islands** | **001-42555** | **N/A** |
| (State or other jurisdiction <br>of incorporation) | (Commission<br> File Number) | (IRS Employer <br>Identification No.) |

---

---

| | |
|:---|:---|
| **1185 Avenue of the Americas, Suite 304**<br> **New York, NY** | **10036** |
| (Address of principal executive offices) | (Zip Code) |

---

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

**<u>Not Applicable</u>**

(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:

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| | | |
|:---|:---|:---|
| **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 1.01 Entry into a Material Definitive Agreement**.

On March 3, 2026, Quartzsea Acquisition Corporation (the "Company") entered into Amendment No. 1 to the Underwriting Agreement (the "Amendment") with Polaris Advisory Partners, LLC (f/k/a SPAC Advisory Partners), a division of Kingswood Capital Partners LLC, as representative of the several underwriters (the "Representative"), and Kingswood Capital Partners LLC.

The Amendment amends that certain Underwriting Agreement, dated March 17, 2025, by and between the Company, the Representative, and Kingswood Capital Partners LLC, to revise the calculation and payment terms of the deferred underwriting commission.

Pursuant to the Amendment, the Deferred Underwriting Commission will be payable from the trust account upon consummation of the Company's initial business combination and equals 4.00% of the gross proceeds from the sale of the firm units and option units, subject to a cap equal to 4.00% of the funds remaining in the trust account after giving effect to all properly submitted redemptions in connection with the initial business combination. The Amendment also clarifies that the underwriters may waive the Deferred Underwriting Commission prior to the consummation of the Company's initial business combination.

The foregoing description of the Amendment is qualified in its entirety by reference to the full text of the Amendment, which is filed as Exhibit 10.1 hereto and incorporated herein by reference.

**Item 9.01. Financial Statements and Exhibits.**

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 10.1 | [Amendment No. 1 to Underwriting Agreement, dated March 3, 2026, by and among Quartzsea Acquisition Corporation, Polaris Advisory Partners, LLC (f/k/a SPAC Advisory Partners), a division of Kingswood Capital Partners LLC, as representative of the several underwriters, and Kingswood Capital Partners LLC](quartzsea_ex10-1.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) |

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**SIGNATURE**

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.

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| | | |
|:---|:---|:---|
|  | **Quartzsea Acquisition Corporation** | **Quartzsea Acquisition Corporation** |
| Date: March 11, 2026 | By: | */s/ Qi Gong* |
|  | Name: | Qi Gong |
|  | Title: | Chief Executive Officer |

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## Exhibit 10.1

**Exhibit 10.1**

**AMENDMENT NO. 1 TO UNDERWRITING AGREEMENT**

**QUARTZSEA ACQUISITION CORPORATION**

This Amendment No. 1 to the Underwriting Agreement (this "Amendment") is entered into as of March 3, 2026, by and between Quartzsea Acquisition Corporation, a Cayman Islands exempted company (the "Company"), Polaris Advisory Partners, LLC (f/k/a and SPAC Advisory Partners), a division of Kingswood Capital Partners LLC, as representative of the several underwriters named therein (the "Representative"), and Kingswood Capital Partners LLC ("Kingswood").

**RECITALS**

WHEREAS, the Company, the Representative, and Kingswood are parties to that certain Underwriting Agreement, dated March 17, 2025 (the "Underwriting Agreement");

WHEREAS, the parties desire to amend the Underwriting Agreement to revise the calculation and payment terms of the Deferred Underwriting Commission; and

WHEREAS, capitalized terms used but not defined herein have the meanings set forth in the Underwriting Agreement.

NOW, THEREFORE, in consideration of the mutual covenants set forth herein and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties agree as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**I.** **Amendment to Section 1.3 (Deferred Underwriting Commission).** 

Section 1.3 of the Underwriting Agreement is hereby deleted in its entirety and replaced with the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.3 Deferred Underwriting Commission. The Underwriters agree that 4.00% of the gross proceeds from the sale of the Firm Units ($2,880,000) and the Option Units (up to $432,000), if any (collectively, the "Deferred Underwriting Commission"), will be deposited and held in the Trust Account and payable directly from the Trust Account, without accrued interest, to the Underwriters for their own accounts upon consummation of the Company's initial Business Combination. The Underwriters acknowledge and agree that the Deferred Underwriting Commission shall be payable only to the extent of, and shall in no event exceed, an amount equal to 4.00% of the funds remaining in the Trust Account after giving effect to all properly submitted redemptions in connection with the initial Business Combination. Each Underwriter, severally and not jointly, reserves the right in its sole discretion to waive the Deferred Underwriting Commission at any time prior to the initial Business Combination by providing written notice to the Company. In the event that the Company is unable to consummate a Business Combination and CST, as the trustee of the Trust Account (in this context, the "Trustee"), commences liquidation of the Trust Account as provided in the Trust Agreement, the Underwriters agree that: (i) they shall forfeit any rights or claims to the Deferred Underwriting Commission; and (ii) the Deferred Underwriting Commission, together with all other amounts on deposit in the Trust Account, shall be distributed on a pro-rata basis among the Public Shareholders.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**II.** **No Further Amendments.** 

Except as expressly amended hereby, the Underwriting Agreement remains unmodified and in full force and effect.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**III.** **Governing Law.** 

This Amendment shall be governed by and construed in accordance with the laws of the State of New York, without giving effect to its conflicts of law principles.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**IV.** **Counterparts.** 

This Amendment may be executed in counterparts (including by electronic or PDF signature), each of which shall be deemed an original, and all of which together shall constitute one and the same instrument.

**[Signature Page Follows]**

IN WITNESS WHEREOF, the parties have executed this Amendment as of the date first above written.

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| | |
|:---|:---|
| **QUARTZSEA ACQUISITION CORPORATION** | **QUARTZSEA ACQUISITION CORPORATION** |
| By: | /s/ Qi Gong |
| Name: | Qi Gong |
| Title: | Chief Executive Officer and Chairwoman |
| **POLARIS ADVISORY PARTNERS, LLC (f/k/a SPAC ADVISORY PARTNERS),** | **POLARIS ADVISORY PARTNERS, LLC (f/k/a SPAC ADVISORY PARTNERS),** |
| a division of Kingswood Capital Partners LLC | a division of Kingswood Capital Partners LLC |
| By: | /s/ Lewis Silberman |
| Name: | Lewis Silberman |
| Title: | Partner |
| **KINGSWOOD CAPITAL PARTNERS LLC,<br> AS BROKER DEALER** | **KINGSWOOD CAPITAL PARTNERS LLC,<br> AS BROKER DEALER** |
| By: | /s/ Tyler Bashaw |
| Name: | Tyler Bashaw |
| Title: | Director of Compliance |

---