<SEC-DOCUMENT>0001144204-12-053314.txt : 20120927
<SEC-HEADER>0001144204-12-053314.hdr.sgml : 20120927
<ACCEPTANCE-DATETIME>20120927172144
ACCESSION NUMBER:		0001144204-12-053314
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20120927
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20120927
DATE AS OF CHANGE:		20120927

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CLEARSIGN COMBUSTION CORP
		CENTRAL INDEX KEY:			0001434524
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			WA

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		121113949

	BUSINESS ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168
		BUSINESS PHONE:		(206) 673-4848

	MAIL ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>v324559_8k.htm
<DESCRIPTION>FORM 8-K
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>WASHINGTON, D.C. 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CURRENT REPORT </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Pursuant to Section 13 or 15(d) of the
</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Securities Exchange Act of 1934 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Date of report (Date of earliest event
reported): September 27, 2012</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CLEARSIGN COMBUSTION CORPORATION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Exact name of registrant as specified
in Charter) </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;&nbsp;</B></P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR>
    <TD STYLE="width: 30%; vertical-align: top; font-weight: bold; text-align: center">Washington</TD>
    <TD STYLE="width: 5%; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="width: 30%; vertical-align: top; font-weight: bold; text-align: center">001-35521</TD>
    <TD STYLE="width: 5%; vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="width: 30%; vertical-align: top; font-weight: bold; text-align: center">26-2056298</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(State or other jurisdiction of</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>incorporation or organization)</B></P></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">(Commission File No.)</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">(IRS Employee Identification No.)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>12870 Interurban Avenue South</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Seattle, Washington 98168</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Address of Principal Executive Offices)
</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>206-673-4848</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Issuer Telephone number)</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">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).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT> Written communications pursuant to Rule 425 under the Securities
Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT> Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR240.14a-12)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT> Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b)).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Wingdings">&#168;</FONT> Pre-commencement
communications pursuant to Rule 13e-(c) under the Exchange Act (17 CFR 240.13(e)-4(c))</P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 7.01&#9;Regulation FD Disclosure</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-indent: -63pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">On September 27, 2012, ClearSign Combustion
Corporation issued a press release. The press release is included 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.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 9.01&#9;Financial Statements and Exhibits</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Exhibit 99.1&#9;Press release dated September
27, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">SIGNATURE</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">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.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Dated: September 27, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-right: 0; padding-left: 0">CLEARSIGN COMBUSTION CORPORATION</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 3%; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 47%; padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">By:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-decoration: underline">/s/ James N. Harmon</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;&nbsp;&nbsp;&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">James N. Harmon</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;&nbsp;&nbsp;&nbsp; </TD>
    <TD STYLE="padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Chief Financial Officer</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXHIBIT INDEX</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B></B></P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 15%; padding-right: 0; padding-left: 0; font-weight: bold">Exhibit No.</TD>
    <TD STYLE="width: 85%; padding-right: 0; padding-left: 0; font-weight: bold">Description</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0; font-weight: bold">&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 0; padding-left: 0">99.1</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Press release dated September 27, 2012</TD></TR>
</TABLE>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right">Exhibit 99.1</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><B><U>FOR IMMEDIATE RELEASE</U>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><B>CLEARSIGN ACHIEVES MAJOR DEVELOPMENT
MILESTONE: DEMONSTRATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><B>TECHNIQUE TO PROVIDE UNPRECEDENTED FLAME STABILITY </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><B>UP TO 1,000,000 Btu/hr</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><B><I>&nbsp;</I></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt; text-align: center"><I>Computer control of electrostatic
charge in flames could bring powerful new dimension to design of next-generation combustion systems.&nbsp;</I></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt"><FONT STYLE="color: black">SEATTLE, WA &ndash; SEPTEMBER
27, 2012 - ClearSign Combustion Corporation (Nasdaq: CLIR),</FONT> an emerging leader in combustion and emissions control technology
for industrial, commercial and utility markets, reported today that it has successfully demonstrated its proprietary Electrodynamic
Combustion Control&trade; (ECC&trade;) technology operating in a system with a thermal output of 1,000,000 Btus per hour.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">According to ClearSign CEO Rick Rutkowski, the scale-up
milestone represents a major step in the path to commercializing the company&rsquo;s technology and comes several months ahead
of schedule.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&ldquo;1,000,000 Btu/hr is widely accepted as a standard
for demonstrating a commercially relevant scale of industrial burner technology,&rdquo; Rutkowski explained. &ldquo;Indeed, there
are many commercial burners that operate in the range of several hundred thousand Btu/hr to 1,000,000 Btu/hr. Our original target
was to demonstrate ECC technology operating at this commercially relevant scale by the end of this year. Not only have we met our
goal of 1,000,000 Btu/hr, but we were able to mark this achievement earlier than expected.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&ldquo;Our goal is to apply our ECC technology to
enable combustion systems that deliver a mix of improved energy efficiency and/or process throughput combined with superior environmental
performance,&rdquo; Rutkowski added. &ldquo;Our earlier demonstrations have already attracted significant attention from prospective
customers and from several leading combustion system OEMs and engineering and construction firms who have expressed interest in
teaming with ClearSign to bring ECC technology to market. I believe this latest demonstration is going to be greeted with enthusiasm
by prospective partners and customers in several market segments.&quot;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&ldquo;In June of this year, we demonstrated that
a flame can be stabilized and anchored at a selected location by using ClearSign&rsquo;s ECC technology to dramatically accelerate
the rate of combustion in a system with a high momentum flame and a thermal output of 400,000 Btu/hr,&rdquo; said ClearSign Chief
Technology Officer, Joe Colannino. &ldquo;We have now successfully scaled this flame attachment effect to our demonstration scale
of 1,000,000 Btu/hr.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&quot;In August of this year we used this technique
to enable a burner design that was able to reduce emissions of Nitrogen Oxides (NOx) to extremely low levels of 15 parts per million.
Our design approach suggests that we may be able to substantially simplify the design of both burners and burner control systems
while achieving significant improvements in flame stability when compared to conventional low NOx and ultra-low NOx burners. Flame
stability is commercially important because it can translate directly to meaningful savings in fuel consumption for the many industrial
scale systems that utilize these burners.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&quot;Moreover, the novel design of ClearSign&rsquo;s test burner
requires no use of flue gas recirculation (FGR) fans and allows for operation with minimal levels of oxygen or excess air. These
improvements further compound gains in energy efficiency and savings in capital and operating costs.&rdquo;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The Council of Industrial Boiler Owners (CIBO) 2005 survey indicates
that there are approximately 163,000 package boilers in the US inventory. A large and growing percentage of these are regulated
by the EPA and regional air quality management districts for emissions of NOx and make use of low NOx or ultra-low NOx burners
to meet regulated emissions standards. Pending regulatory deadlines in California for newly tightened NOx standards may lead to
substantially increased costs for many system operators.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">According to ClearSign, the recent demonstration bears significant
implications not only for improved flame stability and reductions in NOx but also for enhanced control of flame shape and flame
length. These can be critically important features for optimizing heat transfer efficiency and for maintaining more uniform heat
distribution in process heaters such as those used in petrochemical refineries. This technique has potentially broad application
in solving costly challenges that constrain both process throughput and plant availability.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&ldquo;Conventional burners have serious limitations with control
of flame shape or flame pattern that can impose costly constraints on plant productivity,&rdquo; said Rutkowski. &ldquo;Crude heaters,
ethylene cracking furnaces and steam methane reformers used to produce hydrogen are all examples of systems where improved control
of flame shape and flame length can deliver significant economic value by increasing process throughput and by lengthening the
time between maintenance cycles for removal of carbon coke.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&quot;These are good examples of the numerous high-value commercial
and industrial applications for which the ability to stabilize a flame and better control flame shape and flame length can be translated
to significant design improvements and substantial savings in both capital and operating costs for users.&quot;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The company also noted that it had recently filed its 45th patent
application and reiterated its goal to file patents covering more than 150 inventions relating to novel ways of applying electrostatic
fields in the design of new burner architectures and in the construction, retrofit, control and operation of large scale combustion
systems.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">A video of the flame attachment effect (filmed at 300,000 Btu/hr)
may be viewed at the ClearSign website: www.clearsign.com</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>About ClearSign Combustion Corporation</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">ClearSign Combustion Corporation designs and develops technologies
that aim to improve key performance characteristics of combustion systems including energy efficiency, emissions control, fuel
flexibility and overall cost effectiveness. Our Electrodynamic Combustion Control&trade; (ECC&trade;) platform technology improves
control of flame shape and heat transfer and optimizes the complex chemical reactions that occur during combustion in order to
minimize harmful emissions. For more information about the Company, please visit www.clearsign.com</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Cautionary note on forward-looking statements</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="color: black">This press release includes forward-looking
information and statements</FONT> within the meaning of the Private Securities Litigation<B> </B>Reform Act of 1995 and the provisions
of Section&nbsp;27A of the Securities Act of 1933, as<B> </B>amended, and Section&nbsp;21E of the Securities Exchange Act of 1934,
as amended<FONT STYLE="color: black">. Except for historical information contained in this release, statements in this release
may constitute forward-looking statements regarding our assumptions, projections, expectations, targets, intentions or beliefs
about future events that are based on management's belief, as well as assumptions made by, and information currently available
to, management. While we believe that our expectations are based upon reasonable assumptions, there can be no assurances that our
goals and strategy will be realized. Numerous factors, including risks and uncertainties, may affect our actual results and may
cause results to differ materially from those expressed in forward-looking statements made by us or on our behalf. Some of these
factors include the acceptance of existing and future products, the impact of competitive products and pricing, general business
and economic conditions, and other factors detailed in our Quarterly Report on Form 10-Q and other periodic reports filed with
the SEC. We specifically disclaim any obligation to update or revise any forward-looking statement whether as a result of new information,
future developments or otherwise.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt"><B>CONTACT:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt"><B>Media Contact:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">Dennis S. Dobson, Jr.,</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">(203) 258-0159</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt"><B>Investor Relations:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">(206) 673-4848</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">investors@clearsign.com</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 4.5pt">&nbsp;</P>

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