---
schema_version: "secwatch.filing_event.v1"
accession: "0001575872-23-000592"
form_type: "8-K"
ticker: "ESLA"
cik: "0001844417"
company_name: "Estrella Immunopharma, Inc."
filed_at: "2023-04-21T23:59:59+00:00"
generated_at: "2026-06-16T21:41:02.142595+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# TradeUP Acquisition receives Nasdaq deficiency notice for failing minimum public holders rule

## Summary
- Nasdaq notified TradeUP on April 19, 2023 it fails to meet minimum 300 public holders required by Listing Rule 5550(a)(3).
- Company has 45 calendar days to submit a compliance plan; extension of up to 180 days may be granted if plan accepted.
- Notice is a deficiency notification, not an immediate delisting; securities continue trading on Nasdaq Capital Market.
- If plan is not accepted, Company may appeal to a Nasdaq Hearings Panel.

## SEC filing metadata
- accession: 0001575872-23-000592
- form_type: 8-K
- ticker: ESLA
- cik: 0001844417
- company_name: Estrella Immunopharma, Inc.
- filed_at: 2023-04-21T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000592/0001575872-23-000592-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000592/uptd-20220419.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001575872-23-000592
- JSON: https://secwatch.observer/filing/0001575872-23-000592.json
- Plain text: https://secwatch.observer/filing/0001575872-23-000592.txt

## Key facts
- Listing & Compliance Notices
  Estrella Immunopharma, Inc. received a nasdaq deficiency notice notice regarding minimum bid price (rules 5550(a)(3)).
  - Exchange: nasdaq
  - Notice: deficiency notice
  - Deficiency: minimum bid price
  - Rules: 5550(a)(3)
  source text: April 19, 2023, TradeUP Acquisition Corp. (the “Company”) received a written notice (the “Notice”) from the listing qualifications department staff of The Nasdaq Stock Market (“Nasdaq”) notifying the Company that the Company was not in compliance with Listing Rule 5550(a)(3) (the “Minimum Public Holders Rule”), which requires the Company to have at least 300 public holders for continued listing on the Nasdaq Capital Market. The Notice is only a notification of deficiency, not of imminent delisting, and has no current effect on the listing or trading of the Company’s securities on the Nasdaq Ca
  evidence_url: https://www.sec.gov/Archives/edgar/data/1844417/000157587223000592/0001575872-23-000592-index.htm

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