Constellation Acquisition Corp I sets Oct. 29 deal deadline

Q: How much did CSTAF draw for its extension?

Constellation Acquisition Corp I drew $5,000 under its unsecured promissory note with Constellation Sponsor LP on September 25, 2026, and deposited the funds into its trust account for public shareholders.

If no business combination is completed, repayment of the note is limited to funds remaining outside the trust account, if any.

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Filing Sentiment

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Form Type

8-K

Rhea-AI Filing Summary

Constellation Acquisition Corp I (CSTAF) drew $5,000 under its unsecured promissory note with Constellation Sponsor LP and deposited the funds into its trust account for public shareholders. The deposit extends the deadline to complete an initial business combination from September 29, 2026, to October 29, 2026; it is the eighth of 11 permitted one-month extensions. The note bears no interest and matures when the initial business combination closes. If no combination is completed, repayment is limited to amounts remaining outside the trust account, if any.

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8-K Event Classification

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

1 item

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

The company incurred a new significant debt or off-balance-sheet obligation.

Key Figures

Amount drawn: $5,000 Previous business-combination deadline: September 29, 2026 Extended business-combination deadline: October 29, 2026 +1 more

4 metrics

Amount drawn $5,000 Extension funds deposited into the trust account on September 25, 2026

Previous business-combination deadline September 29, 2026 Deadline before the extension

Extended business-combination deadline October 29, 2026 Deadline after the extension

Extension sequence 8th of 11 one-month extensions Extensions permitted under the company’s amended and restated memorandum and articles of association

Key Terms

unsecured promissory note, trust account, initial business combination, amended and restated memorandum and articles of association

4 terms

unsecured promissory note financial

"pursuant to the unsecured promissory note"

An unsecured promissory note is a written IOU in which a borrower promises to repay a loan plus any interest but does not pledge any asset as collateral. Investors care because it relies solely on the borrower’s ability to pay—like lending money to someone without holding their watch as security—so it usually carries higher interest and higher risk and ranks below secured debt if the borrower defaults, affecting expected recovery and company credit profile.

trust account financial

"deposited into the Company’s trust account for its public shareholders"

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.

initial business combination financial

"complete 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.

amended and restated memorandum and articles of association regulatory

"permitted under the Company’s amended and restated memorandum and articles of association"

A document that replaces and combines a company’s core governing papers into a single, updated set of rules spelling out the company’s purpose, share structure, voting rights and how decisions are made. Think of it as rewriting and consolidating a household’s rulebook so everyone knows who controls what and how major choices are handled. Investors watch these changes because they can alter ownership rights, governance, dividend policy and takeover protections, affecting value and control.

FAQ

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

How much did CSTAF draw for its extension?

Constellation Acquisition Corp I drew $5,000 under its unsecured promissory note with Constellation Sponsor LP on September 25, 2026, and deposited the funds into its trust account for public shareholders.

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

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Available on EDGAR 09/29/2026 - 04:16 PM Accepted by SEC EDGAR 09/29/2026 - 04:15 PM

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): September 25, 2026

CONSTELLATION ACQUISITION CORP I

(Exact name of registrant as specified in its charter)

Cayman Islands		001-39945		98-1574835
(State or other jurisdiction of incorporation)		(Commission File Number)		(IRS Employer Identification No.)

1290 Avenue of the Americas
10th Floor
New York, NY		10104
(Address of principal executive offices)		(Zip Code)

(212) 983-1602

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 which registered
Class A ordinary shares, par value $0.0001 per share	CSTAF	OTCID Basic Market
Redeemable warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50	CSTWF	OTCID Basic Market
Units, each consisting of one Class A ordinary share and one-third of one redeemable warrant	CSTUF	OTCID Basic 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 2.03. Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement or a Registrant.

On September 25, 2026, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated September 25, 2026, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders. This deposit enables the Company to extend the date by which it must complete its initial business combination from September 29, 2026 to October 29, 2026 (the “Extension”). The Extension is the eighth of eleven one-month extensions permitted under the Company’s amended and restated memorandum and articles of association and provides the Company with additional time to complete its initial business combination. The Note does not bear interest and matures upon closing of the Company’s initial business combination. In the event that the Company does not consummate a business combination, the Note will be repaid only from amounts remaining outside of the Company’s trust account, if any.

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.

Dated: September 29, 2026

	CONSTELLATION ACQUISITION CORP I

	By:	/s/ Chandra R. Patel
	Name:	Chandra R. Patel
	Title:	Chief Executive Officer

Source: View Original Filing on SEC EDGAR

Filing Exhibits & Attachments

4 documents