---
schema_version: "secwatch.filing_event.v1"
accession: "0001929980-25-000498"
form_type: "8-K"
ticker: "HSPOF"
cik: "0001946021"
company_name: "Horizon Space Acquisition I Corp."
filed_at: "2025-06-13T23:59:59+00:00"
generated_at: "2026-05-19T09:17:46.893903+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Horizon Space Acquisition I issues $300K promissory note to sponsor for working capital

## Summary
- $300,000 unsecured promissory note issued to sponsor Horizon Space Acquisition I Sponsor Corp. on June 13, 2025.
- Note bears no interest; principal due upon business combination or expiry of SPAC term.
- Sponsor may convert note into private units at $10.00 per unit upon consummation of business combination.
- Proceeds used for general working capital purposes; drawn down from time to time until business combination.

## SEC filing metadata
- accession: 0001929980-25-000498
- form_type: 8-K
- ticker: HSPOF
- cik: 0001946021
- company_name: Horizon Space Acquisition I Corp.
- filed_at: 2025-06-13T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1946021/000192998025000498/0001929980-25-000498-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1946021/000192998025000498/hspo_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001929980-25-000498
- JSON: https://secwatch.observer/filing/0001929980-25-000498.json
- Plain text: https://secwatch.observer/filing/0001929980-25-000498.txt

## Key facts
- Debt Financings
  Horizon Space Acquisition I Corp. incurred loan of principal amount of $300,000 with Horizon Space Acquisition I Sponsor Corp. at bears no interest maturing payable in full upon the earlier to occur of (i) the consummation of the Company's business combination or (ii) the date of expiry of the term of the Company.
  - Instrument: loan
  - Principal: principal amount of $300,000
  - Counterparty: Horizon Space Acquisition I Sponsor Corp.
  - Rate: bears no interest
  - Maturity: payable in full upon the earlier to occur of (i) the consummation of the Company's business combination or (ii) the date of expiry of the term of the Company
  - Event: incurrence
  source text: On June 13, 2025, Horizon Space Acquisition I Corp., a Cayman Islands exempted company (the " Company ") issued an unsecured promissory note (the " Note ") in the principal amount of $300,000 to Horizon Space Acquisition I Sponsor Corp., a Cayman Islands company, the sponsor of the Company (the " Sponsor ").
  evidence_url: https://www.sec.gov/Archives/edgar/data/1946021/000192998025000498/0001929980-25-000498-index.htm

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