---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-114927"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2022-11-04T23:59:59+00:00"
generated_at: "2026-06-22T06:44:05.244131+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# ClearSign receives Nasdaq minimum bid price deficiency notice; 180 days to cure

## Summary
- Received Nasdaq deficiency notice on Nov 1, 2022 for failing to maintain $1 minimum bid price (Rule 5550(a)(2)).
- Has 180 calendar days until May 1, 2023 to regain compliance with bid price ≥$1 for 10 consecutive business days.
- If not cured, may seek additional 180-day extension if it meets other Nasdaq Capital Market listing standards.
- No immediate delisting; company monitoring options but no assurance of regaining compliance.

## SEC filing metadata
- accession: 0001104659-22-114927
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2022-11-04T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 3.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465922114927/0001104659-22-114927-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465922114927/tm2229781d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-114927
- JSON: https://secwatch.observer/filing/0001104659-22-114927.json
- Plain text: https://secwatch.observer/filing/0001104659-22-114927.txt

## Key facts
- Listing & Compliance Notices
  ClearSign Technologies Corp received a nasdaq deficiency notice notice regarding minimum bid price (rules 5550(a)(2), 5810(c)(3)(A)).
  - Exchange: nasdaq
  - Notice: deficiency notice
  - Deficiency: minimum bid price
  - Rules: 5550(a)(2), 5810(c)(3)(A)
  source text: November 1, 2022, ClearSign Technologies Corporation (the “Company”) received a letter (the “Notice”) from the Listing Qualifications Staff (the “Staff”) of The Nasdaq Stock Market LLC (“Nasdaq”) indicating that, based upon the closing bid price of the Company’s common stock for the last 30 consecutive business days beginning on September 20, 2022 and ending on October 31, 2022, the Company no longer meets the requirement to maintain a minimum bid price of $1 per share, as set forth in Nasdaq Listing Rule 5550(a)(2). In accordance with Nasdaq Listing Rule 5810(c)(3)(A), the Company has been pr
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465922114927/0001104659-22-114927-index.htm

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