---
schema_version: "secwatch.filing_event.v1"
accession: "0001575872-23-000800"
form_type: "8-K"
ticker: "ESLA"
cik: "0001844417"
company_name: "Estrella Immunopharma, Inc."
filed_at: "2023-05-19T23:59:59+00:00"
generated_at: "2026-06-14T20:03:54.725486+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# TradeUP Acquisition extends business combination deadline to June 19, 2023; Estrella deposits $45,511

## Summary
- Company extended deadline to complete initial business combination from May 19 to June 19, 2023.
- Estrella Biopharma deposited $45,511 ($0.05 per public share) into trust account for the extension.
- Deposit evidenced by unsecured zero-interest promissory note; convertible into shares at $10.00 per share.
- Note payable upon consummation of business combination or within 5 business days of termination.
- Extension is pursuant to existing merger agreement with Estrella Biopharma, dated September 30, 2022.

## SEC filing metadata
- accession: 0001575872-23-000800
- form_type: 8-K
- ticker: ESLA
- cik: 0001844417
- company_name: Estrella Immunopharma, Inc.
- filed_at: 2023-05-19T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000800/0001575872-23-000800-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000800/uptd-20230303.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001575872-23-000800
- JSON: https://secwatch.observer/filing/0001575872-23-000800.json
- Plain text: https://secwatch.observer/filing/0001575872-23-000800.txt

## Key facts
- Debt Financings
  Estrella Immunopharma, Inc. incurred loan of $45,511 with Estrella at no interest maturing upon the consummation of the Company's business combination.
  - Instrument: loan
  - Principal: $45,511
  - Counterparty: Estrella
  - Rate: no interest
  - Maturity: upon the consummation of the Company's business combination
  - Event: incurrence
  source text: Estrella has deposited a monthly extension payment of $45,511 to the trust account of the Company to extend the deadline for the Company to complete the business combination contemplated therein by June 19, 2023. Such deposit is evidenced by an unsecured promissory note in the principal amount of o $45,511 issued by the Company to Estrella (the “Extension Note”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000800/0001575872-23-000800-index.htm

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