---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-036398"
form_type: "8-K"
ticker: "CSTAF"
cik: "0001834032"
company_name: "Constellation Acquisition Corp I"
filed_at: "2026-03-30T23:59:59+00:00"
generated_at: "2026-05-15T08:26:12.236759+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 extends business combination deadline to April 29, 2026 with $5,000 sponsor note draw

## Summary
- Drew $5,000 from unsecured promissory note with Constellation Sponsor LP to extend business combination deadline from March 29, 2026 to April 29, 2026.
- Extension is the second of eleven possible one-month extensions under the company's amended charter.
- Note is non-interest bearing, matures at business combination or repaid only from funds outside trust if no deal.

## SEC filing metadata
- accession: 0001213900-26-036398
- form_type: 8-K
- ticker: CSTAF
- cik: 0001834032
- company_name: Constellation Acquisition Corp I
- filed_at: 2026-03-30T23:59:59+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/1834032/000121390026036398/0001213900-26-036398-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1834032/000121390026036398/ea0283805-8k_constell1.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-036398
- JSON: https://secwatch.observer/filing/0001213900-26-036398.json
- Plain text: https://secwatch.observer/filing/0001213900-26-036398.txt

## Source-grounded claims
- claim_id: 6f1e25597807145547a4173e14a78cdf8be794c2
  claim: Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP maturing upon closing of the Company's initial business combination.
  evidence_excerpt: On March 26, 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 March 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/1834032/000121390026036398/0001213900-26-036398-index.htm

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