# EDGAR Filing Document

**Accession Number:** 0001834032
**File Stem:** 0001213900-25-051595
**Filing Date:** 2025-6
**Character Count:** 8532
**Document Hash:** 4804c5f5eec26ef786d548d6a3834cea
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-051595.hdr.sgml**: 20250605

**ACCESSION NUMBER**: 0001213900-25-051595

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 14

**CONFORMED PERIOD OF REPORT**: 20250605

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

**ITEM INFORMATION**: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20250605

**DATE AS OF CHANGE**: 20250605

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Constellation Acquisition Corp I
- **CENTRAL INDEX KEY:** 0001834032
- **STANDARD INDUSTRIAL CLASSIFICATION:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39945
- **FILM NUMBER:** 251027577

**BUSINESS ADDRESS:**
- **STREET 1:** 200 PARK AVENUE, 32ND FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10166
- **BUSINESS PHONE:** 646-585-8975

**MAIL ADDRESS:**
- **STREET 1:** 200 PARK AVENUE, 32ND FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10166

?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 15(d) of The Securities Exchange Act of 1934**

Date of Report (Date of earliest event reported): **June 5, 2025**

**CONSTELLATION ACQUISITION CORP I**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Cayman Islands** | **001-39945** | **98-1574835** |
| (State or other jurisdiction<br> of incorporation) | (Commission File Number) | (IRS Employer<br> Identification No.) |

---

---

| | |
|:---|:---|
| **200 Park Avenue**<br> **32nd Floor**<br> **New York, NY** | **10166** |
| (Address of principal executive offices) | (Zip Code) |

---

**(646) 585-8975** 

Registrant's telephone number, including area code

**Not Applicable**

(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 of 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 each exchange on<br> which registered** |
| Class A ordinary shares, par value $0.0001 per share | CSTAF | OTCQX® Best Market |
| Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 | CSTWF | OTCQB® Venture Market |
| Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant | CSTUF | OTCQX® Best Market |

---

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 January 29, 2024, Constellation Acquisition Corp I, a Cayman Islands exempted company (the "Company"), issued an unsecured promissory note (the "Promissory Note") in the principal amount of $1,660,000 to Constellation Sponsor LP, a Delaware limited partnership, bearing no interest and maturing once the Company closes its initial business combination. On June 5, 2025, the Company amended the promissory note (the "Amendment"), to increase the principal amount by $590,000 from $1,660,000 to $2,250,000. Unless otherwise set forth in the Amendment, all other provisions of the Promissory Note remain in full force and effect.

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

**Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.**

The disclosure contained in Item 1.01 of this Current Report on Form 8-K is incorporated by reference in this Item 2.03.

**Item 9.01. Exhibits.**

**(d) Exhibits**

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| | |
|:---|:---|
| **Exhibit No.** | **Exhibit** |
| 10.1 | [Amendment to the Promissory Note, dated June 5, 2025, between Constellation Acquisition Corp I and Constellation Sponsor LP.](ea024405101ex10-1_constell1.htm) |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

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**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.

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| | | |
|:---|:---|:---|
|  | **CONSTELLATION ACQUISITION CORP I** | **CONSTELLATION ACQUISITION CORP I** |
| Dated: June 5, 2025 | By: | */s/ Chandra R. Patel* |
|  |  | Chandra R. Patel |
|  |  | Chief Executive Officer |

---

## Exhibit 10.1

**Exhibit 10.1**

**FIRST AMENDMENT TO PROMISSORY NOTE**

THIS FIRST AMENDMENT TO THE PROMISSORY NOTE (this "**Amendment**") is dated as of the 5th day of June, 2025 and is made by and between Constellation Acquisition Corp I, a Cayman Islands exempted company (the "**Maker**"), and Constellation Sponsor LP, a Delaware limited partnership, or its registered assigns or successors in interest (the "**Payee**").

RECITALS

A. Maker executed that certain Promissory Note dated January 30, 2024, in the original principal amount of up to $1,660,000 (the "**Note**").

B. Maker and Payee have agreed to amend the Note.

C. Unless otherwise set forth herein, all other provisions of the Note shall remain in full force and effect.

E. All capitalized terms not defined in this Amendment will have the meanings given to them in the Note.

In consideration of these promises, the mutual covenants contained in this Amendment and other good and valuable consideration, the receipt and sufficiency of which are acknowledged, the parties agree as follows:

1. The Total Principal Amount of the Note is increased by $590,000 from $1,660,000 to $2,250,000.

2. Section 3 of the Note is hereby amended and restated in its entirety to read as follows:

"3. <u>Drawdown Requests</u>. Maker and Payee agree that, in addition to the Initial Principal Amount, Maker may request an additional aggregate amount of up to (i) $605,000, which may be drawn down in eleven (11) equal tranches subject to a request from Maker and (ii) $1,590,000, which may be drawn down from time to time until the Maker consummates a Business Combination (each a "**Drawdown Request**"). Payee shall fund each Drawdown Request no later than three (3) business days after receipt of a Drawdown Request. Once an amount is drawn down under this Note, it shall not be available for future Drawdown Requests even if prepaid. No fees, payments or other amounts shall be due to Payee in connection with, or as a result of, any Drawdown Request by the Maker."

[*Signature Page Follows*]

IN WITNESS WHEREOF, the Maker and Payee, intending to be legally bound hereby, have caused this Amendment to the Note to be duly executed as of the day and year first above written.

---

| | |
|:---|:---|
| **Constellation Acquisition Corp I** | **Constellation Acquisition Corp I** |
| By: | /s/ Chandra R. Patel |
| Name: | Chandra R. Patel |
| Title: | Chief Executive Officer |

---

Agreed and Acknowledged:

**Constellation Sponsor LP**<br> a Delaware limited partnership

By: Antarctica Endurance Manager, LLC, its <br> general partner

---

| | |
|:---|:---|
| By: | /s/ Chandra R. Patel |
| Name: | Chandra R. Patel |
| Title: | Manager |

---