---
schema_version: "secwatch.filing_event.v1"
accession: "0001575872-23-000316"
form_type: "8-K"
ticker: "ESLA"
cik: "0001844417"
company_name: "Estrella Immunopharma, Inc."
filed_at: "2023-03-03T23:59:59+00:00"
generated_at: "2026-06-18T13:34:50.892714+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# TradeUP Acquisition Corp. issues $50,000 promissory note to founder for working capital

## Summary
- $50,000 unsecured promissory note issued to Tradeup INC., a founder of the SPAC.
- Note bears no interest; payable upon business combination or expiry of SPAC term.
- Payee may convert note into shares at $10.00 per share prior to business combination.
- Proceeds used for general working capital purposes.
- Issuance exempt from registration under Section 4(a)(2) of Securities Act.

## SEC filing metadata
- accession: 0001575872-23-000316
- form_type: 8-K
- ticker: ESLA
- cik: 0001844417
- company_name: Estrella Immunopharma, Inc.
- filed_at: 2023-03-03T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000316/0001575872-23-000316-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000316/uptd-20230303.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001575872-23-000316
- JSON: https://secwatch.observer/filing/0001575872-23-000316.json
- Plain text: https://secwatch.observer/filing/0001575872-23-000316.txt

## Key facts
- Debt Financings
  Estrella Immunopharma, Inc. incurred loan of $50,000 with Tradeup INC. at no interest.
  - Instrument: loan
  - Principal: $50,000
  - Counterparty: Tradeup INC.
  - Rate: no interest
  - Event: incurrence
  source text: On March 3, 2023, TradeUP Acquisition Corp. (the “Company”) issued an unsecured promissory note (the “Promissory Note”) in the amount of $50,000 to Tradeup INC., one of the founders of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000316/0001575872-23-000316-index.htm

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