---
schema_version: "secwatch.filing_event.v1"
accession: "0001575872-23-001000"
form_type: "8-K"
ticker: "ESLA"
cik: "0001844417"
company_name: "Estrella Immunopharma, Inc."
filed_at: "2023-06-20T23:59:59+00:00"
generated_at: "2026-06-13T21:47:19.824472+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# TradeUP Acquisition Corp. extends business combination deadline to July 19, 2023 with $45,511 deposit

## Summary
- Estrella Biopharma deposited $45,511 into trust to extend deadline from June 19 to July 19, 2023.
- Extension Note issued to Estrella, unsecured, non-interest-bearing, convertible into shares at $10.00 per share.
- Deposit equals $0.05 per public share for the one-month extension.
- Company may continue monthly extensions through July 19, 2023 per its charter.

## SEC filing metadata
- accession: 0001575872-23-001000
- form_type: 8-K
- ticker: ESLA
- cik: 0001844417
- company_name: Estrella Immunopharma, Inc.
- filed_at: 2023-06-20T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 2.03, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1844417/000157587223001000/0001575872-23-001000-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1844417/000157587223001000/uptd-20230616.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001575872-23-001000
- JSON: https://secwatch.observer/filing/0001575872-23-001000.json
- Plain text: https://secwatch.observer/filing/0001575872-23-001000.txt

## Key facts
- Debt Financings
  Estrella Immunopharma, Inc. incurred loan of $45,511 with Estrella Biopharma, Inc. at no interest maturing upon the consummation of the Company's business combination.
  - Instrument: loan
  - Principal: $45,511
  - Counterparty: Estrella Biopharma, Inc.
  - Rate: no interest
  - Maturity: upon the consummation of the Company's business combination
  - Event: incurrence
  source text: Pursuant to the Merger Agreement, 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 July 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/1844417/000157587223001000/0001575872-23-001000-index.htm

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