---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-23-058655"
form_type: "8-K"
ticker: "ESLA"
cik: "0001844417"
company_name: "Estrella Immunopharma, Inc."
filed_at: "2023-07-21T23:59:59+00:00"
generated_at: "2026-06-13T05:06:42.135916+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# TradeUP Acquisition Corp. issues $50,000 promissory note to founder Tradeup INC.

## Summary
- Unsecured $50,000 promissory note to founder Tradeup INC. dated July 20, 2023, for working capital.
- Non-interest bearing; payable upon business combination or company term expiry, whichever is earlier.
- Payee may convert into private shares at $10 per share at least two business days before business combination.
- Repayment excludes trust account funds; no claim on trust proceeds if no business combination.

## SEC filing metadata
- accession: 0001213900-23-058655
- form_type: 8-K
- ticker: ESLA
- cik: 0001844417
- company_name: Estrella Immunopharma, Inc.
- filed_at: 2023-07-21T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1844417/000121390023058655/0001213900-23-058655-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1844417/000121390023058655/ea182127-8k_tradeup.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-23-058655
- JSON: https://secwatch.observer/filing/0001213900-23-058655.json
- Plain text: https://secwatch.observer/filing/0001213900-23-058655.txt

## Key facts
- Debt Financings
  Estrella Immunopharma, Inc. incurred loan of $50,000 with Tradeup INC. at no interest maturing upon the earlier to occur of (i) the consummation of the Business Combination or (ii) the date of expiry of the term of the Company.
  - Instrument: loan
  - Principal: $50,000
  - Counterparty: Tradeup INC.
  - Rate: no interest
  - Maturity: upon the earlier to occur of (i) the consummation of the Business Combination or (ii) the date of expiry of the term of the Company
  - Event: incurrence
  source text: On July 20, 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/1844417/000121390023058655/0001213900-23-058655-index.htm

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