---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-058779"
form_type: "8-K"
ticker: null
cik: "0001674365"
company_name: "Aptinyx Inc."
filed_at: "2023-05-11T23:59:59+00:00"
generated_at: "2026-06-15T04:17:25.035119+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.9
calibrated_materiality_score: 0.9
confidence: "high"
source: SEC EDGAR
---

# Aptinyx to be delisted from Nasdaq on May 19 after failing to request hearing

## Summary
- Nasdaq notified Aptinyx it is a public shell and non-compliant with board/committee composition rules.
- Company will not request a hearing; trading suspended at opening on May 19, 2023.
- Nasdaq will file Form 25-NSE to formally delist the stock.

## SEC filing metadata
- accession: 0001104659-23-058779
- form_type: 8-K
- cik: 0001674365
- company_name: Aptinyx Inc.
- filed_at: 2023-05-11T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.9
- calibrated_materiality_score: 0.9
- confidence: high
- sec_items: 3.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1674365/000110465923058779/0001104659-23-058779-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1674365/000110465923058779/tm2315321d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-058779
- JSON: https://secwatch.observer/filing/0001104659-23-058779.json
- Plain text: https://secwatch.observer/filing/0001104659-23-058779.txt

## Key facts
- Listing & Compliance Notices
  Aptinyx Inc. received a nasdaq delisting notice notice regarding other (rules 5101).
  - Exchange: nasdaq
  - Notice: delisting notice
  - Rules: 5101
  source text: May 10, 2023, Aptinyx Inc. (the “Company”) was notified by the Listing Qualifications Department (the “Staff”) of The Nasdaq Stock Market LLC (“Nasdaq”) that, based upon the Staff’s determination that the Company is a “public shell” as that term is defined in Nasdaq Listing Rule 5101, and the Company’s non-compliance with certain board and committee composition listing requirements, the Company would be delisted at the opening of business on May 19, 2023 unless the Company timely requests a hearing before a Nasdaq Hearings Panel to address the deficiencies and present a plan to regain complian
  evidence_url: https://www.sec.gov/Archives/edgar/data/1674365/000110465923058779/0001104659-23-058779-index.htm

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