ClearSign Technologies Faces Delisting Concerns
Ticker: CLIR · Form: 8-K · Filed: Sep 30, 2025 · CIK: 1434524
Sentiment: bearish
Topics: delisting, listing-standards, corporate-actions
TL;DR
ClearSign might be delisted - check the 8-K for details.
AI Summary
ClearSign Technologies Corporation filed an 8-K on September 30, 2025, reporting a notice of delisting or failure to satisfy continued listing rules. The filing also includes financial statements and exhibits. The company was formerly known as CLEARSIGN COMBUSTION CORP.
Why It Matters
This filing indicates potential issues with ClearSign Technologies' continued listing on an exchange, which could impact its stock trading and investor confidence.
Risk Assessment
Risk Level: high — A notice of delisting or failure to meet listing standards is a significant negative event for a publicly traded company.
Key Players & Entities
- ClearSign Technologies Corporation (company) — Registrant
- September 30, 2025 (date) — Date of earliest event reported
- CLEARSIGN COMBUSTION CORP (company) — Former company name
- 8023 E. 63rd Place, Suite 101 Tulsa , Oklahoma 74133 (address) — Principal Executive Offices
FAQ
What specific listing rule or standard has ClearSign Technologies failed to satisfy?
The filing indicates a 'Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard' but does not specify the exact rule in the provided text.
What is the significance of the 'Transfer of Listing' mentioned in the filing?
The filing mentions 'Transfer of Listing' as an item information, suggesting the company might be moving to a different stock exchange or undergoing a change in its listing status.
When was ClearSign Technologies Corporation formerly known as CLEARSIGN COMBUSTION CORP?
The date of the name change from CLEARSIGN COMBUSTION CORP to ClearSign Technologies Corporation was May 7, 2008.
What is the principal executive office address for ClearSign Technologies Corporation?
The principal executive offices are located at 8023 E. 63rd Place, Suite 101, Tulsa, Oklahoma 74133.
What is the SEC file number for ClearSign Technologies Corporation?
The SEC file number for ClearSign Technologies Corporation is 001-35521.
Filing Stats: 1,092 words · 4 min read · ~4 pages · Grade level 14.7 · Accepted 2025-09-30 16:05:36
Key Financial Figures
- $1 — 31, 2025, had closed below the minimum $1 per share and, as a result, the Company
- $1 m — Company was not in compliance with the $1 minimum bid price requirement for the con
Filing Documents
- tm2527606d1_8k.htm (8-K) — 30KB
- 0001104659-25-095017.txt ( ) — 191KB
- clir-20250930.xsd (EX-101.SCH) — 3KB
- clir-20250930_lab.xml (EX-101.LAB) — 33KB
- clir-20250930_pre.xml (EX-101.PRE) — 22KB
- tm2527606d1_8k_htm.xml (XML) — 3KB
01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing
Item 3.01 Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing. As previously reported, on April 1, 2025, ClearSign Technologies Corporation (the "Company"), received a letter from the Listing Qualifications Staff of The Nasdaq Stock Market LLC ("Nasdaq") indicating that the bid price for the Company's common stock for the 30 consecutive business days beginning on February 18, 2025, and ending on March 31, 2025, had closed below the minimum $1 per share and, as a result, the Company was not in compliance with the $1 minimum bid price requirement for the continued listing on the Nasdaq Capital Market, as set forth in Nasdaq Listing Rule 5550(a)(2) (the "Bid Price Rule"). On September 30, 2025, the Company received a second letter from Nasdaq granting the Company's request for a 180-day extension to regain compliance with the Bid Price Rule. The Company now has until March 30, 2026, to meet the requirement. As part of the Company's request for the 180-day extension, the Company notified Nasdaq that it intends to regain compliance with the Bid Price Rule by effecting a reverse stock split, if necessary. If at any time prior to March 30, 2026, the bid price of the Company's common stock closes at $1 per share or more for a minimum of 10 consecutive business days, the Company will regain compliance with the Bid Price Rule. If the Company does not regain compliance with the Bid Price Rule during the additional 180-day extension, Nasdaq will provide written notification to the Company that its common stock will be delisted. At that time, the Company may appeal the relevant delisting determination to a hearings panel pursuant to the procedures set forth in the applicable Nasdaq Listing Rules. However, there can be no assurance that, if the Company does appeal the delisting determination by Nasdaq to the hearings panel, that such appeal would be successful. The Company will continue to monitor the closing bid price of its c
Financial Statements and Exhibits
Financial Statements and Exhibits. (d) Exhibits. (d) Exhibits. Exhibit No. Description 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Current Report to be signed on its behalf by the undersigned hereunto duly authorized. Dated: September 30, 2025 CLEARSIGN TECHNOLOGIES CORPORATION By: /s/ Colin James Deller Name: Colin James Deller Title: Chief Executive Officer