---
schema_version: "secwatch.filing_event.v1"
accession: "0001829126-24-003826"
form_type: "8-K"
ticker: "ADNH"
cik: "0001744494"
company_name: "ADVENT TECHNOLOGIES HOLDINGS, INC."
filed_at: "2024-05-29T23:59:59+00:00"
generated_at: "2026-06-01T07:43:33.077640+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Advent Technologies receives Nasdaq deficiency notice for late Q1 10-Q filing

## Summary
- Nasdaq notified Advent on May 24, 2024, of non-compliance with Listing Rule 5250(c)(1) due to late Form 10-Q.
- Company has until June 17, 2024, to submit a plan to regain compliance; Nasdaq may grant exception until October 14, 2024.
- Advent expects to submit a compliance plan by the June 17 deadline and targets filing the Q1 10-Q as soon as practicable.
- The notice has no immediate effect on listing or trading of ADN common stock or warrants.
- Company states it intends to regain compliance with SEC reporting obligations to maintain listing.

## SEC filing metadata
- accession: 0001829126-24-003826
- form_type: 8-K
- ticker: ADNH
- cik: 0001744494
- company_name: ADVENT TECHNOLOGIES HOLDINGS, INC.
- filed_at: 2024-05-29T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 3.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1744494/000182912624003826/0001829126-24-003826-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1744494/000182912624003826/adventtechnologies_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001829126-24-003826
- JSON: https://secwatch.observer/filing/0001829126-24-003826.json
- Plain text: https://secwatch.observer/filing/0001829126-24-003826.txt

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