---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-107025"
form_type: "8-K"
ticker: "ABPO"
cik: "0001893219"
company_name: "Abpro Holdings, Inc."
filed_at: "2024-04-23T23:59:59+00:00"
generated_at: "2026-06-03T12:28:14.086978+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Atlantic Coastal II receives Nasdaq deficiency notice; extends business combination deadline

## Summary
- Nasdaq notified Company on April 18, 2024 of non-compliance with minimum 1.1M publicly held shares and $15M market value of publicly held shares.
- Company expects to cure deficiencies through pending business combination with Abpro Corporation.
- Company submitted compliance plan on April 23, 2024 requesting 180-day extension for Rule 5450(b)(1)(B).
- Board extended business combination deadline from April 19, 2024 to May 19, 2024.

## SEC filing metadata
- accession: 0001193125-24-107025
- form_type: 8-K
- ticker: ABPO
- cik: 0001893219
- company_name: Abpro Holdings, Inc.
- filed_at: 2024-04-23T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.01, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1893219/000119312524107025/0001193125-24-107025-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1893219/000119312524107025/d784826d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-107025
- JSON: https://secwatch.observer/filing/0001193125-24-107025.json
- Plain text: https://secwatch.observer/filing/0001193125-24-107025.txt

## Key facts
- Listing & Compliance Notices
  Abpro Holdings, Inc. received a nasdaq deficiency notice notice regarding other (rules 5450(b)(1)(B), 5450(b)(2)(C)).
  - Exchange: nasdaq
  - Notice: deficiency notice
  - Rules: 5450(b)(1)(B), 5450(b)(2)(C)
  source text: April 18, 2024, Atlantic Coastal Acquisition Corp. II (the “Company”) received letters from the Nasdaq Stock Market LLC (“Nasdaq”) indicating that (i) the Company was not in compliance with Nasdaq’s Listing Rule 5450(b)(1)(B) because the Company has not, as of the fiscal year ended December 31, 2023, maintained a minimum of 1,100,000 publicly held shares, as required under the Nasdaq continued listing standards for The Nasdaq Global Market and (ii) the Company has failed to maintain a minimum market value of publicly held shares of $15,000,000 for the 30 consecutive business day period precedi
  evidence_url: https://www.sec.gov/Archives/edgar/data/1893219/000119312524107025/0001193125-24-107025-index.htm

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