---
schema_version: "secwatch.filing_event.v1"
accession: "0001829126-25-006667"
form_type: "8-K"
ticker: "ADNH"
cik: "0001744494"
company_name: "ADVENT TECHNOLOGIES HOLDINGS, INC."
filed_at: "2025-08-22T23:59:59+00:00"
generated_at: "2026-05-17T10:36:45.611497+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 1.0
calibrated_materiality_score: 1.0
confidence: "high"
source: SEC EDGAR
---

# Advent Technologies receives Nasdaq delist notice over stockholders' equity non-compliance

## Summary
- Nasdaq Staff determined Advent failed to regain compliance with Listing Rule 5550(b)(1) requiring at least $2,500,000 stockholders' equity.
- The Company filed its 10-Q on August 12, 2025 but could not reflect sufficient equity adjustment as required by Nasdaq.
- Delist determination letter received August 18, 2025; appeal deadline is August 25, 2025 or securities will be delisted August 27, 2025.
- Advent intends to appeal the delist determination to a Nasdaq hearings panel to stay delisting actions.
- Pending appeal, common stock (ADN) and warrants (ADNWW) will continue trading on Nasdaq.

## SEC filing metadata
- accession: 0001829126-25-006667
- form_type: 8-K
- ticker: ADNH
- cik: 0001744494
- company_name: ADVENT TECHNOLOGIES HOLDINGS, INC.
- filed_at: 2025-08-22T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 1.0
- calibrated_materiality_score: 1.0
- confidence: high
- sec_items: 3.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1744494/000182912625006667/0001829126-25-006667-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1744494/000182912625006667/adventtech_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001829126-25-006667
- JSON: https://secwatch.observer/filing/0001829126-25-006667.json
- Plain text: https://secwatch.observer/filing/0001829126-25-006667.txt

## Key facts
- Listing & Compliance Notices
  ADVENT TECHNOLOGIES HOLDINGS, INC. received a nasdaq delisting notice notice regarding stockholders equity (rules 5550(b)(1)).
  - Exchange: nasdaq
  - Notice: delisting notice
  - Deficiency: stockholders equity
  - Rules: 5550(b)(1)
  source text: d Listing Rule or Standard; Transfer of Listing. As previously disclosed, on October 18, 2024, Advent Technologies Holdings, Inc. (the “Company”) was notified by the Listing Qualifications Department (the “Staff”) of the Nasdaq Stock Market (“Nasdaq”) that it was out of compliance with Listing Rule 5550(b)(1), which requires that the Company maintain stockholders’ equity of at least $2,500,000 for continued listing (the “Rule”), or to meet the alternatives of market value of listed securities or net income from continuing operations. The Staff previously granted the Company an exception to reg
  evidence_url: https://www.sec.gov/Archives/edgar/data/1744494/000182912625006667/0001829126-25-006667-index.htm

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