---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-114768"
form_type: "8-K"
ticker: "CSTAF"
cik: "0001834032"
company_name: "Constellation Acquisition Corp I"
filed_at: "2025-11-25T23:59:59+00:00"
generated_at: "2026-05-16T17:01:01.416735+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Constellation Acquisition Corp I draws $5,000 to extend business combination deadline to Dec 29, 2025

## Summary
- Drew $5,000 from sponsor promissory note to fund tenth one-month extension of business combination deadline.
- New deadline is December 29, 2025; previously November 29, 2025.
- Note is unsecured, non-interest bearing, matures upon business combination or from trust account if no deal.
- Extension funds deposited into trust account for public shareholders.

## SEC filing metadata
- accession: 0001213900-25-114768
- form_type: 8-K
- ticker: CSTAF
- cik: 0001834032
- company_name: Constellation Acquisition Corp I
- filed_at: 2025-11-25T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 2.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1834032/000121390025114768/0001213900-25-114768-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1834032/000121390025114768/ea0267090-8k_constellation1.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-114768
- JSON: https://secwatch.observer/filing/0001213900-25-114768.json
- Plain text: https://secwatch.observer/filing/0001213900-25-114768.txt

## Key facts
- Debt Financings
  Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP maturing upon closing of the Company’s initial business combination.
  - Instrument: loan
  - Principal: $5,000
  - Counterparty: Constellation Sponsor LP
  - Maturity: upon closing of the Company’s initial business combination
  - Event: incurrence
  source text: On November 25, 2025, 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 November 25, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”),
  evidence_url: https://www.sec.gov/Archives/edgar/data/1834032/000121390025114768/0001213900-25-114768-index.htm

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