---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-23-077392"
form_type: "8-K"
ticker: "ESLA"
cik: "0001844417"
company_name: "Estrella Immunopharma, Inc."
filed_at: "2023-09-18T23:59:59+00:00"
generated_at: "2026-06-10T15:17:22.919328+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 deadline to Oct 19, 2023; Estrella deposits $37,432.70 into trust

## Summary
- Monthly extension fee of $37,432.70 ($0.05 per Remaining Share) deposited into trust account to extend deadline from Sept 19 to Oct 19, 2023.
- Payment made by Estrella Biopharma pursuant to Merger Agreement dated Sept 30, 2022; evidenced by unsecured, non-interest-bearing promissory note.
- Extension Note convertible into common stock of TradeUP at $10.00 per share; repayable if business combination terminates.
- Company may extend monthly from July 19, 2023 to July 14, 2024 by depositing Monthly Extension Fee each month.

## SEC filing metadata
- accession: 0001213900-23-077392
- form_type: 8-K
- ticker: ESLA
- cik: 0001844417
- company_name: Estrella Immunopharma, Inc.
- filed_at: 2023-09-18T23:59:59+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/1844417/000121390023077392/0001213900-23-077392-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1844417/000121390023077392/ea185365-8k425_tradeup.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-23-077392
- JSON: https://secwatch.observer/filing/0001213900-23-077392.json
- Plain text: https://secwatch.observer/filing/0001213900-23-077392.txt

## Key facts
- Debt Financings
  Estrella Immunopharma, Inc. incurred loan of $37,432.70 with Estrella at no interest maturing upon the consummation of the Company's business combination.
  - Instrument: loan
  - Principal: $37,432.70
  - 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 $37,432.70 to the trust account of the Company to extend the deadline for the Company to complete the business combination contemplated therein by October 19, 2023. Such deposit is evidenced by an unsecured promissory note in the principal amount of $37,432.70 issued by the Company to Estrella (the “Extension Note”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1844417/000121390023077392/0001213900-23-077392-index.htm

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