---
schema_version: "secwatch.filing_event.v1"
accession: "0001829126-26-007750"
form_type: "8-K"
ticker: "ADNH"
cik: "0001744494"
company_name: "ADVENT TECHNOLOGIES HOLDINGS, INC."
filed_at: "2026-07-22T20:36:54+00:00"
generated_at: "2026-07-22T20:38:06.752186+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Advent Technologies stock moved to OTC Expert Market, unsolicited quotes only

## Summary
- Stock moved to OTC Expert Market effective July 20, 2026.
- Trading restricted to unsolicited quotes only, limiting liquidity.
- No other material events reported in the filing.

## SEC filing metadata
- accession: 0001829126-26-007750
- form_type: 8-K
- ticker: ADNH
- cik: 0001744494
- company_name: ADVENT TECHNOLOGIES HOLDINGS, INC.
- filed_at: 2026-07-22T20:36:54+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1744494/000182912626007750/0001829126-26-007750-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1744494/000182912626007750/adventtech_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001829126-26-007750
- JSON: https://secwatch.observer/filing/0001829126-26-007750.json
- Plain text: https://secwatch.observer/filing/0001829126-26-007750.txt

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