---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-022315"
form_type: "8-K"
ticker: "CSTAF"
cik: "0001834032"
company_name: "Constellation Acquisition Corp I"
filed_at: "2026-03-02T23:59:59+00:00"
generated_at: "2026-05-15T22:45:11.720328+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Constellation Acquisition Corp I extends business combination deadline to March 29, 2026 via $5,000 draw on sponsor note

## Summary
- Company drew $5,000 from unsecured promissory note with Constellation Sponsor LP to fund extension.
- Extension moves deadline from Feb 28, 2026 to March 29, 2026; first of eleven allowed one-month extensions.
- Note is non-interest bearing and matures upon completion of initial business combination or from trust account surplus.
- Funds deposited into trust account for public shareholders; extension approved by unanimous director resolution on Feb 26, 2026.

## SEC filing metadata
- accession: 0001213900-26-022315
- form_type: 8-K
- ticker: CSTAF
- cik: 0001834032
- company_name: Constellation Acquisition Corp I
- filed_at: 2026-03-02T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 2.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1834032/000121390026022315/0001213900-26-022315-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1834032/000121390026022315/ea027908901-8k_constellation.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-022315
- JSON: https://secwatch.observer/filing/0001213900-26-022315.json
- Plain text: https://secwatch.observer/filing/0001213900-26-022315.txt

## Source-grounded claims
- claim_id: c89c04f8aa2a8c7a876cfc8c5b9dea918037fb10
  claim: Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at The Note does not bear interest maturing upon closing of the Company’s initial business combination.
  evidence_excerpt: On February 27, 2026, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous director resolution, dated February 26, 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.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1834032/000121390026022315/0001213900-26-022315-index.htm

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