CLIR 8-K filed 2026 · insiderdelta

Item 2.02 - Results of Operations and Financial Condition

Earnings press release item. The actual results are typically in Exhibit 99.1 - fetch may not have completed.

Item 2.02

Results of Operations and Financial Condition.

To
the extent required, the information set forth below in Item 7.01 of this Current Report on Form 8-K is incorporated herein by reference
in its entirety.

Item 7.01 - Regulation FD Disclosure

189 words

Item 7.01

Regulation FD Disclosure.

On
May 20, 2026, ClearSign Technologies Corporation (the “Company”) issued a press release announcing the results of operations
for the quarter ended March 31, 2026 (the “Financial Results”). The press release is furnished as Exhibit 99.1 to
this Current Report on Form 8-K and is incorporated by reference in its entirety into this Item 7.01.

Also
on May 20, 2026, the Company held a conference call discussing the Financial Results and other business related information. A transcript
of this conference call is furnished as Exhibit 99.2 to this Current Report on Form 8-K and is incorporated by reference in
its entirety into this Item 7.01.

The
information furnished with this Item 7.01, including Exhibits 99.1 and 99.2, shall not be deemed “filed” for purposes of Section 18
of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section,
nor shall it be deemed incorporated by reference into any other filing under the Securities Act of 1933, as amended, or the Exchange Act,
except as expressly set forth by specific reference in such a filing.

Item 9.01 - Financial Statements and Exhibits

46 words

Item 9.01

Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.

Description

99.1**

Press Release, dated May 20, 2026.

99.2**

Transcript of Conference Call held on May 20, 2026.

104*

Cover Page Interactive Data File (embedded within the Inline XBRL document).

* Filed herewith.

** Furnished herewith.