ClearSign Technologies (NASDAQ: CLIR) enacts 1-for-10 reverse stock split for Nasdaq bid-price compliance
Rhea-AI Filing Summary
ClearSign Technologies Corporation is implementing a 1-for-10 reverse stock split of its common stock, effective at 12:01 a.m. Eastern Time on March 16, 2026. This will reduce outstanding shares from approximately 54.1 million to approximately 5.41 million, with no change to authorized shares or par value.
The reverse split is intended to increase the share price to regain compliance with Nasdaq’s $1.00 minimum bid price requirement. Each 10 pre-split shares will be combined into one share, while voting and other rights remain proportionate. No fractional shares will be issued; positions will be rounded up to the next whole share at the Depository Trust Company participant level.
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Insights
ClearSign enacts a 1-for-10 reverse split to support Nasdaq bid-price compliance without changing fundamentals.
ClearSign Technologies is consolidating every 10 common shares into 1 share, cutting outstanding shares from about 54.1 million to about 5.41 million. Authorized share count and par value stay the same, so this is a capital structure change rather than an operating shift.
The company states the action is intended to raise the per-share trading price to regain compliance with Nasdaq’s
No fractional shares will be issued; instead, holdings are rounded up to whole shares at the Depository Trust Company participant level. Actual market impact will depend on post-split trading dynamics and whether the higher nominal price supports sustained compliance in subsequent periods.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934
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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions (see General Instruction A.2 below).
| Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR240.14a-12) |
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Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13(e)-4(c)) |
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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨
| Item 3.03 | Material Modification to Rights of Security Holders. |
To the extent required by Item 3.03 of Form 8-K, the information regarding the Reverse Stock Split (as defined below) set forth below in Item 5.03 of this Current Report on Form 8-K is incorporated by reference herein in its entirety.
| Item 5.03 | Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. |
On March 6, 2026, ClearSign Technologies Corporation (the “Company”) filed an amendment (the “Charter Amendment”) to its certificate of incorporation, as amended, with the Secretary of State of Delaware to implement a 1-for-10 reverse stock split, such that every ten (10) shares of the Company’s common stock, par value $0.0001 per share (the “common stock”), will be combined into one (1) issued and outstanding share of common stock, with no change in the $0.0001 par value per share (the “Reverse Stock Split”).
The Reverse Stock Split and Charter Amendment will be effective at 12:01 a.m., Eastern Time, on March 16, 2026. The Company expects that upon the opening of trading on March 16, 2026, the common stock will begin trading on a post-split basis under CUSIP number 185064201.
In accordance with the terms of the Company’s outstanding warrants, equity incentive plans and applicable award agreements, the number of shares of common stock underlying outstanding warrants and equity awards will be proportionately adjusted, and any exercise prices will be proportionately increased, to reflect the Reverse Stock Split. No fractional shares will be outstanding following the Reverse Stock Split. Holders of fractional shares will be entitled to receive, in lieu of any fractional share, the number of shares rounded up to the next whole number at the participant level with the Depository Trust Company.
The foregoing description of the Charter Amendment is not complete and is subject to, and qualified in its entirety by, the complete text of the Charter Amendment, which is filed as Exhibit 3.1 to this Current Report on Form 8-K, and incorporated by reference herein.
| Item 7.01 | Regulation FD Disclosure. |
On March 10, 2026, the Company issued a press release announcing the Reverse Stock Split. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference herein.
The information provided under this Item 7.01 of this Current Report on Form 8-K, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act except as shall be expressly set forth by specific reference in such filing.
| Item 9.01 | Financial Statements and Exhibits. |
(d) Exhibits.
| Exhibit No. | Description | |
| 3.1 | Certificate of Amendment to Certificate of Incorporation, as amended, of ClearSign Technologies Corporation, filed with the Secretary of State of the State of Delaware on March 6, 2026. | |
| 99.1* | Press Release, dated March 10, 2026. | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |
* Furnished herewith.
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this Current Report to be signed on its behalf by the undersigned hereunto duly authorized.
Dated: March 10, 2026
| CLEARSIGN TECHNOLOGIES CORPORATION | ||
| By: | /s/ Colin James Deller | |
| Name: | Colin James Deller | |
| Title: | Chief Executive Officer | |
Exhibit 99.1
ClearSign Technologies Corporation Announces 1-for-10 Reverse Stock Split to be Effective As of March 16, 2026
TULSA, Okla., March 10, 2026 – ClearSign Technologies Corporation (NASDAQ: CLIR) (“ClearSign” or the “Company”), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and safety, and support the use of cleaner fuels including hydrogen, today announced a 1-for-10 reverse stock split of its outstanding common stock. The reverse stock split will become effective at 12:01 a.m. ET on March 16, 2026. The common stock is expected to begin trading on a split-adjusted basis on the Nasdaq Capital Market (“Nasdaq”) under the same symbol “CLIR” when the market opens on March 16, 2026, with the new CUSIP number 185064201.
The reverse stock split was approved by the Company’s stockholders at the Company’s special meeting of stockholders held on February 26, 2026. The reverse stock split is intended to increase the per share trading price of the Company’s common stock to regain compliance with the $1.00 minimum bid price requirement for continued listing on Nasdaq. The reverse stock split will reduce the number of outstanding shares of the Company’s common stock from approximately 54.1 million shares pre-reverse split to approximately 5.41 million shares post-reverse split.
The number of authorized shares of common stock and the par value per share will remain unchanged. As a result of the reverse stock split, every 10 shares of the Company’s pre-reverse split common stock will be combined and reclassified into one share of common stock. Proportionate voting rights and other rights of such holders will not be affected by the reverse stock split. No fractional shares will be issued. Stockholders otherwise entitled to a fractional share will receive one whole share rounded up at the participant level with the Depository Trust Company (the “DTC”).
In accordance with the terms of the Company’s outstanding warrants, equity incentive plans and applicable award agreements, the number of shares underlying outstanding warrants and equity awards will be proportionately adjusted, and any exercise prices will be proportionately increased, to reflect the reverse stock split.
The Company’s transfer agent, VStock Transfer, LLC, is acting as exchange agent for the reverse stock split and will send instructions to stockholders of record regarding the exchange of certificates for common stock, if any, for uncertificated shares of common stock. Stockholders owning shares via a broker or other nominee will have their positions automatically adjusted at the participant level with the DTC to reflect the reverse stock split, subject to the brokers’ particular processes, and will not be required to take any action in connection with the reverse stock split.
Additional information about the reverse stock split can be found in the Company’s Definitive Proxy Statement filed with the Securities and Exchange Commission (the “SEC”) on February 2, 2026 (the “Proxy Statement”). The Proxy Statement is available at www.sec.gov or at the Company’s website at www.clearsign.com. Additional information regarding this reverse stock split will be included in a Current Report on Form 8-K to be filed by the Company with the SEC on or about March 10, 2026.
Forward-Looking Statements
This press release may contain forward-looking statements about the Company, including, without limitation, the Company’s expectations regarding anticipated compliance with Nasdaq’s minimum bid price rules. You can find many (but not all) of these statements by looking for words such as “approximates,” “believes,” “hopes,” “expects,” “anticipates,” “estimates,” “projects,” “intends,” “plans,” “would,” “should,” “could,” “may,” “will” or other similar expressions. While management has based any forward-looking statements included in this press release on its current expectations on the Company’s strategy, plans, intentions, performance, or future occurrences or results, the information on which such expectations were based may change. These forward-looking statements rely on a number of assumptions concerning future events and are subject to a number of risks, uncertainties and other factors, many of which are outside of the Company’s control, that could cause actual results to materially differ from such statements. Such risks, uncertainties and other factors include, but are not limited to, the Company’s ability to regain compliance with Nasdaq’s minimum bid price rule, the Company’s ability to successfully complete engineering orders for its customers; the Company’s ability to generate equipment and installation orders following an initial engineering order from customers; the Company’s ability to successfully deliver, install, and meet the performance obligations of the Company’s burners in the California market and any other markets the Company may sell products in; the Company’s ability to further expand the sale of ultra-low NOx process, flare and boiler burners; the Company’s ability to continue expanding its customer base in the refining industry; the Company’s ability to effectively compete in the flare industry and to retain its existing customers in such industry; the Company’s ability to provide low emissions retrofit solutions based on continuously changing air permit requirements at the federal and state level; the Company’s ability to continue innovating and expanding its scope of product and service applications; the Company’s ability to expand its engagement with current, and future, customers beyond burner technology and into broader emission and system integration solutions; general business and economic conditions; the performance of management and the Company’s employees; the Company’s ability to obtain financing; whether the Company’s technology will be accepted and adopted and other factors identified in the Company’s Annual Report on Form 10-K and other periodic and current reports filed with the SEC and available for review at www.sec.gov. Furthermore, the Company operates in a competitive environment where new and unanticipated risks may arise. Accordingly, investors should not place any reliance on forward-looking statements as a prediction of actual results. The Company disclaims any intention to, and, except as may be required by law, undertakes no obligation to, update or revise forward-looking statements to reflect events or circumstances that subsequently occur or of which the Company hereafter become aware.
About ClearSign Technologies Corporation
ClearSign Technologies Corporation designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety, the use of hydrogen as a fuel and overall cost-effectiveness. Our patented technologies, embedded in established OEM products as ClearSign Core™ and ClearSign Eye™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries. For more information, please visit www.clearsign.com.
Investor Relations:
Matthew Selinger
Firm IR Group for ClearSign
+1 415-572-8152
mselinger@firmirgroup.com
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Filing Exhibits & Attachments
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