---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-049305"
form_type: "8-K"
ticker: "CSTAF"
cik: "0001834032"
company_name: "Constellation Acquisition Corp I"
filed_at: "2026-04-29T23:59:59+00:00"
generated_at: "2026-05-15T02:23:14.636110+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Constellation Acquisition Corp I draws $5,000 note to extend SPAC deadline to May 29, 2026

## Summary
- Drew $5,000 from unsecured promissory note with Constellation Sponsor LP for a one-month extension.
- Extension moves deadline from April 29, 2026 to May 29, 2026 (third of eleven permitted one-month extensions).
- Note is non-interest bearing, matures upon business combination; repayment only from trust assets if no deal.

## SEC filing metadata
- accession: 0001213900-26-049305
- form_type: 8-K
- ticker: CSTAF
- cik: 0001834032
- company_name: Constellation Acquisition Corp I
- filed_at: 2026-04-29T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 2.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1834032/000121390026049305/0001213900-26-049305-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1834032/000121390026049305/ea0288132-8k_constell1.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-049305
- JSON: https://secwatch.observer/filing/0001213900-26-049305.json
- Plain text: https://secwatch.observer/filing/0001213900-26-049305.txt

## Key facts
- Debt Financings
  Constellation Acquisition Corp I amended loan with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company’s initial business combination.
  - Instrument: loan
  - Counterparty: Constellation Sponsor LP
  - Rate: does not bear interest
  - Maturity: matures upon closing of the Company’s initial business combination
  - Event: amendment
  source text: pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP
  evidence_url: https://www.sec.gov/Archives/edgar/data/1834032/000121390026049305/0001213900-26-049305-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.