---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-23-055099"
form_type: "8-K"
ticker: "CLIR"
cik: "0001434524"
company_name: "ClearSign Technologies Corp"
filed_at: "2023-05-02T23:59:59+00:00"
generated_at: "2026-06-16T03:15:11.162611+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# ClearSign Technologies receives Nasdaq extension to Oct 30, 2023 to regain $1 bid price compliance

## Summary
- Company previously disclosed bid price non-compliance on Nov 1, 2022; extension granted until Oct 30, 2023.
- Nasdaq requires minimum bid price of $1.00 per share; company must regain compliance by Oct 30, 2023.
- Company intends to cure deficiency via reverse stock split if necessary.
- Trading on Nasdaq Capital Market continues under symbol 'CLIR' during extension period.

## SEC filing metadata
- accession: 0001104659-23-055099
- form_type: 8-K
- ticker: CLIR
- cik: 0001434524
- company_name: ClearSign Technologies Corp
- filed_at: 2023-05-02T23:59:59+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 3.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1434524/000110465923055099/0001104659-23-055099-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1434524/000110465923055099/tm2314455d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-23-055099
- JSON: https://secwatch.observer/filing/0001104659-23-055099.json
- Plain text: https://secwatch.observer/filing/0001104659-23-055099.txt

## Key facts
- Listing & Compliance Notices
  ClearSign Technologies Corp received a nasdaq extension granted notice regarding minimum bid price (rules 5550(a)(2)).
  - Exchange: nasdaq
  - Notice: extension granted
  - Deficiency: minimum bid price
  - Rules: 5550(a)(2)
  source text: May 2, 2023, the Company received a second letter from Nasdaq granting the Company an additional 180 calendar days, or until October 30, 2023, to regain compliance with the Minimum Bid Price Requirement for continued listing on The Nasdaq Capital Market pursuant to Nasdaq Listing Rule 5550(a)(2) (the “Notice”). Nasdaq further stated in the Notice that its determination to grant an extension was based on the Company meeting the continued listing requirement for market value of publicly held shares and all other applicable requirements for initial listing on The Nasdaq Capital Market, with the e
  evidence_url: https://www.sec.gov/Archives/edgar/data/1434524/000110465923055099/0001104659-23-055099-index.htm

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