---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-082814"
form_type: "8-K"
ticker: "CSTAF"
cik: "0001834032"
company_name: "Constellation Acquisition Corp I"
filed_at: "2026-07-29T20:15:21+00:00"
generated_at: "2026-07-29T20:16:57.025433+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

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

## Summary
- Drew $5,000 from unsecured promissory note with Constellation Sponsor LP to fund one-month extension.
- Extension moves deadline from July 29, 2026 to August 29, 2026; sixth of eleven permitted one-month extensions.
- Note is non-interest bearing, matures upon closing of initial business combination; repayment only from funds outside trust if no deal.

## SEC filing metadata
- accession: 0001213900-26-082814
- form_type: 8-K
- ticker: CSTAF
- cik: 0001834032
- company_name: Constellation Acquisition Corp I
- filed_at: 2026-07-29T20:15:21+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 2.03
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1834032/000121390026082814/0001213900-26-082814-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1834032/000121390026082814/ea0299691-8k_constellation1.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-082814
- JSON: https://secwatch.observer/filing/0001213900-26-082814.json
- Plain text: https://secwatch.observer/filing/0001213900-26-082814.txt

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