CSTA Constellation Acquisition Corp I - 8-K

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

On May 28, 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 May 28, 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 May 29, 2026 to June 29, 2026 (the “Extension”). The Extension is the fourth
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.

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