The following discussion and analysis of our financial condition and results of
operations should be read in conjunction with the unaudited consolidated
condensed financial statements and related notes included elsewhere in this
Quarterly Report on Form 10-Q as well as our audited financial statements and
related notes included in our most recent Annual Report on Form 10-K. In
addition to historical information, this discussion and analysis here and
throughout this Form 10-Q contains forward-looking statements that involve
risks, uncertainties, and assumptions. Our actual results may differ materially
from those anticipated in these forward-looking statements due to a number of
factors, including but not limited to, the risks described in the section titled
"Risk Factors" in our Annual Report on Form 10-K.

OVERVIEW



We design and develop technologies for the purpose of improving key performance
characteristics of combustion systems, including emission and operational
performance, energy efficiency and overall cost-effectiveness. Our ClearSign
Core™ technology has been proven in full scale industrial test furnaces and
boilers and first customer installations are currently operating in normal
commercial use. We have generated nominal revenues from operations to date to
meet operating expenses.

We have incurred losses since inception totaling $85.9 million and we expect to
experience operating losses and negative cash flow for the foreseeable future.
We have historically financed our operations primarily through issuances of
equity securities. Since inception, we have raised approximately $89.2 million
in gross proceeds through the sale of our equity securities. We may need to
raise additional capital in the future, however, the significant volatility in
the capital markets may negatively affect our ability to raise this additional
capital.

It is not possible at this time to estimate the full impact that the coronavirus
pandemic will have on our business or on our potential customers, suppliers, or
other business partners. However, the continued spread of the coronavirus, the
measures taken by the governments of affected countries, actions taken to
protect employees, the limitations placed on travel and border crossings, and
the impact of the pandemic on various business activities in affected countries
could adversely impact our operational results and financial condition.

In order to generate meaningful revenues, our technologies must gain market
recognition and acceptance to develop sufficient recurring sales. In addition,
management believes that the successful growth and operation of our business is
dependent upon our ability to obtain adequate sources of funding through
co-development agreements, strategic partnering agreements, or equity or debt
financing to support commercialization of our research and development efforts,
protect intellectual property, form relationships with strategic partners and
provide for working capital and general corporate purposes. There can be no
assurance that we will be successful in achieving our long-term plans, or that
such plans, if consummated, will result in profitable operations or enable us to
continue in the long-term as a going concern.

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With respect to our China operations, we have a satellite office located in
Beijing, China to support our commercialization efforts. At this time, these
operations in China are immaterial compared to total company operations. As of
June 30, 2022, our China asset balance totaled $182 thousand, or approximately
2%, compared to our total asset balance of $11,397 thousand. During the year
ended December 31, 2021, revenues attributable to our China operations were $21
thousand, or approximately 3.4% compared to our total revenues of $607 thousand.

Our costs include employee salaries and benefits, compensation paid to
consultants, materials and supplies for prototype development and manufacture,
costs associated with development activities including materials,
sub-contractors, travel and administration, legal and accounting expenses, sales
and marketing costs, general and administrative expenses, and other costs
associated with an early stage, publicly traded technology company. We currently
have 14 full-time employees. Because using third party expertise and resources
is more efficient than maintaining full time resources, we also expect to incur
ongoing consulting expenses related to technology development and some
administrative, sales and legal functions commensurate with our current level of
activities.

The amount that we spend for any specific purpose may vary significantly, and
could depend on a number of factors including, but not limited to, the pace of
progress of our commercialization and development efforts, actual needs with
respect to product testing, development and research, market conditions, and
changes in or revisions to our sales and marketing strategies.

Research, development, and commercial acceptance of new technologies are, by
their nature, unpredictable. Although we undertake development and
commercialization efforts with reasonable diligence, there can be no assurance
that the net proceeds from our securities offerings will be sufficient to enable
us to develop our technology to the extent needed to create sufficient future
sales to sustain operations. If the net proceeds from these offerings are
insufficient for this purpose, we will consider other options to continue our
path to commercialization, including, but not limited to, additional financing
through follow-on equity offerings, debt financing, co-development agreements,
sale or licensing of developed intellectual or other property, or other
alternatives.

We cannot assure that our technologies will be accepted, that we will ever earn
revenues sufficient to support our operations, or that we will ever be
profitable. Furthermore, we have no committed source of financing, and we cannot
assure that we will be able to raise money as and when we need it to continue
our operations. If we cannot raise funds as and when we need them, we may be
required to scale back our development plans by reducing expenditures for
employees, consultants, business development and marketing efforts or to
otherwise severely curtail, or even to cease, our operations.

CRITICAL ACCOUNTING POLICIES


The following discussion and analysis of financial condition and results of
operations is based upon our financial statements, which have been prepared in
conformity with accounting principles generally accepted in the United States of
America. Certain accounting policies and estimates are particularly important to
the understanding of our financial position and results of operations. These
policies and estimates require the application of significant judgment by
management. These estimates can be materially affected by changes from period to
period as economic factors and conditions outside of our control change. As a
result, they are subject to an inherent degree of uncertainty. In applying these
policies, our management uses their judgment to determine the appropriate
assumptions to be used in the determination of certain estimates. Those
estimates are based on our historical operations, our future business plans and
projected financial results, the terms of existing contracts, our observance of
trends in the industry, information provided by our customers and information
available from other outside sources, as appropriate. See Note 2 to our
unaudited condensed consolidated financial statements included elsewhere in this
report for a more complete description of our significant accounting policies.

Revenue Recognition and Cost of Goods Sold.


The Company recognizes revenue and related cost of goods sold in accordance with
FASB ASC 606 Revenue from Contracts with Customers (ASC 606). Revenues and cost
of goods sold are recognized once the goods or services are delivered to the
customer's control or non-refundable performance obligations are satisfied.

The
Company's

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contracts with customers generally have performance obligations and a schedule
of non-refundable cancellation obligations. The contracts generally will be
fully performed upon delivery of certain documents or equipment. Revenue related
to the contracts is recognized following the completion of non-refundable
performance obligations as defined in the contract.

The Company's contracts generally include progress payments from customers upon
completion of defined milestones. As these payments are received, they are
offset against accumulated project costs and recorded as either contract assets
or contract liabilities. Upon completion of the performance obligations and
collectability is determined, revenue can be recorded. For any contract in
connection with which the Company is expected to incur costs in excess of the
contact price, the Company accrues the estimated loss in full in the period such
determination is made.

Impairment of Long-Lived Assets



The Company tests long-lived assets, consisting of fixed assets, patents, and
other intangible assets, for impairment whenever events or changes in
circumstances indicate that the carrying amount of an asset may not be
recoverable through the estimated undiscounted cash flows expected from the use
and eventual disposition of the assets. In the event an asset in not fully
recoverable a loss is recognized based on the amount by which the carrying
amount exceeds the fair value of the long-lived assets. Fair value is determined
based on the present value of estimated expected cash flows using a discount
rate commensurate with the risks involved, quoted market prices, or appraised
values depending upon the nature of the assets. Losses on long-lived assets to
be disposed of is determined in a similar manner, except those fair values are
reduced for the cost of disposal.

Product Warranties



The Company warrants all installed products against defects in materials and
workmanship, and shortcomings in performance compared to contractual guarantees
for a period specified in each contract. Accruals for product warranties are
based on expected warranty experience and current product performance trends
which are recorded as a component of cost of sales at the time revenue is
recognized. The warranty liabilities are reduced by material and labor costs
during the warranty period in the periods in which the costs are incurred. The
Company periodically assesses the adequacy of our recorded warranty liabilities
and adjusts the amounts as necessary, and such adjustments could be material if
estimates differ significantly from actual warranty expense. The warranty
liabilities are included in accounts payable and accrued liabilities in the
unaudited condensed consolidated balance sheets.

Research and Development

The cost of research and development is expensed as incurred. Research and development costs consist of salaries, benefits, share based compensation, consumables, and consulting fees, including costs to develop and test prototype equipment and parts. Research and development costs are offset by any funds received from strategic partners in cost sharing, collaborative projects or government grants.

Stock-Based Compensation



The costs of all employee stock options, as well as other equity-based
compensation arrangements, are reflected in the unaudited, condensed
consolidated financial statements based on the estimated fair value of the
awards on the grant date. That cost is recognized over the period during which
an employee is required to provide service in exchange for the award, or in the
case of performance options, expense is recognized upon completion of a
milestone as defined in the grant agreement. Stock-based compensation for stock
grants to non-employees is determined as the fair value of the consideration
received or the fair value of equity instruments issued, whichever is more
reliably measured.

Fair Value of Financial Instruments

The Company's financial instruments primarily consist of cash equivalents, accounts payable, accrued expenses and short-term investments in government securities. As of the balance sheet date, the estimated fair values of the



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financial instruments were not materially different from their carrying values
as presented on the balance sheets. This is primarily attributed to the short
maturities of these instruments.

RESULTS OF OPERATIONS

Comparison of the Three and Six Months Ended June 30, 2022 and 2021

Highlights of our quarter financial performance are as follows:



                                              For the Three Months Ended
(in thousands, except per share data)                  June 30,
                                                2022               2021          $ Change      % Change
Revenues                                   $            -     $            -    $        -         NA %
Cost of goods sold                                      -                505    $    (505)      100.0 %
Gross loss                                              -              (505)    $      505      100.0 %
Research and development                              188                472    $    (284)       60.2 %
General and administrative                          1,472              1,565    $     (93)        5.9 %
Operating Expenses                                  1,660              2,037    $    (377)       18.5 %
Other income, net                                      22                251    $    (229)       91.2 %
Net loss                                   $      (1,638)     $      (2,290)    $      652       28.5 %
Basic and diluted net income per common
share                                      $       (0.05)     $       (0.07)    $     0.02       28.6 %


                                             For the Six Months Ended
(in thousands, except per share data)               June 30,
                                               2022             2021       $ Change      % Change
Revenues                                   $           -     $      363    $   (363)      100.0 %
Cost of goods sold                                     -            730    $   (730)      100.0 %
Gross loss                                             -          (367)    $     367      100.0 %
Research and development                             296          1,298    $ (1,002)       77.2 %
General and administrative                         2,881          2,898    $    (17)        0.6 %
Operating Expenses                                 3,177          4,196    $ (1,019)       24.3 %
Other income, net                                     49            251    $   (202)       80.5 %
Net loss                                   $     (3,128)     $  (4,312)    $   1,184       27.5 %
Basic and diluted net income per common
share                                      $      (0.09)     $   (0.14)    $    0.05       35.7 %


Sales and Gross Profit

Consolidated revenues were zero for the three months ended June 30, 2022 and 2021.



Consolidated revenues for the six months ended June 30, 2022, were zero compared
to revenues of $363 thousand for six months ended June 30, 2021. During the six
months ended June 30, 2021, consolidated revenues included revenues from our
burner product line for a sale that occurred in the United States.

Gross loss for the three months ended June 30, 2022, decreased by $505 thousand,
or 100.0%, compared to the three months ended June 30, 2021. During the three
months ended June 30, 2021, negative gross profit occurred predominantly due to
recognizing estimated contract losses from our ExxonMobil project.

Gross loss for the six months ended June 30, 2022, decreased by $367 thousand,
or 100.0%, compared to the six months ended June 30, 2021. During the six months
ended June 30, 2021, negative profit from our estimated ExxonMobil contract
losses were offset by positive profit from our burner product line sale and
reversals of product warranties that expired.

Research and Development

Research and development ("R&D") expenses decreased by $284 thousand or approximately 60.2%, to $188 thousand for the three months ended June 30, 2022, as compared to $472 thousand during the three months ended June



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30, 2021. During the three months ended June 30, 2022, R&D expenses decreased
due to an organizational restructure that occurred at the beginning of 2022. We
restructured our organization such that three engineers previously performing
R&D functions were reassigned to business development functions, which shifted
salaries of approximately $174 thousand to G&A expense. This reassignment
occurred at the beginning of 2022 and will affect the remainder of the year, and
was executed to focus engineers on sales initiatives related to customer
technical support. Decreases in human capital costs also favorably impacted R&D
expenses by $123 thousand for the three months ended June 30, 2022, when
compared to the three months ended June 30, 2021.

R&D expenses decreased by $1,002 thousand, or approximately 77.2%, to $296
thousand for the six months ended June 30, 2022, as compared to $1,298 thousand
during the six months ended June 30, 2021. During the six months ended June 30,
2022, our organizational restructure favorably impacted R&D expenses by $281
thousand compared to the six months ended June 30, 2021. Decreases in human
capital related to headcount reductions favorably impacted R&D expenses by $246
thousand for the six months ended June 30, 2022, when compared to the six months
ended June 30, 2021. In additions, product development costs trended down by
$181 thousand for the six months ended June 30, 2022 compared to the six months
ended June 30, 2021, due to engineers focusing on business development
functions.

General and Administrative



General and administrative ("G&A") expenses decreased by $93 thousand, or
approximately 5.9%, to $1,472 thousand for the three months ended June 30, 2022,
as compared to $1,565 thousand during the three months ended June 30, 2021. A
one-time severance accrual for our prior CFO during the three months ended June
30, 2021, favorably affected G&A by $100 thousand, when compared to the three
months ended June 30, 2022. Board compensation decreased by $136 thousand in the
three months ended June 30, 2022, when compared to the three months ended June
30, 2021. This compensation decrease was attributed to two key factors: (i)
changing payment of director compensation from stock options to restricted stock
units, and (ii) deferring compensation expense as required by accounting
standard ASC 718 Stock Compensation. Refer to Note 6 - Equity for further
details. During the three months ended June 30, 2022, G&A expenses increased by
$174 thousand compared to the prior three months ended June 30, 2021, due to our
organizational restructure referenced in the R&D explanation above.

G&A expenses decreased by $17 thousand, or approximately 0.6%, to $2,881
thousand for the six months ended June 30, 2022, as compared to $2,898 thousand
during the six months ended June 30, 2021. Decreases in board compensation were
offset by increases in G&A expenses for our organizational restructure during
the six months ended June 30, 2022, when compared to the six months ended June
30, 2021.

Other Income

The impact of the $251 thousand loan forgiveness during the three and six months
ended June 30, 2021, primarily drove the unfavorable change when compared to the
three and six months ended June 30, 2022.

The impact of selling fixed assets from our Seattle office location favorably
impacted other income by $14 thousand and $37 thousand for the three months and
six months ended June 30, 2022, respectively. In January 2022, the board of
directors approved the relocation of our headquarters from Seattle, Washington
to Tulsa, Oklahoma. After approval, we began soliciting bids for our used lab
and office equipment.

Net Loss

Net loss for the three months ended June 30, 2022, was $1,638 thousand compared
to $2,290 thousand for the three months ended June 30, 2021, or an approximate
28.5% decrease. The $652 thousand decrease in net loss during the three months
ended June, 2022 is primarily attributable to zero gross profit during the three
months ended June 30, 2022, compared to negative gross profit for the three
months ended June 30, 2021.

Net loss for the six months ended June 30, 2022, was $3,128 thousand compared to
$4,312 thousand for the six months ended June 30, 2021, or an approximate 27.5%
decrease. The $1,184 thousand decrease in net loss during the

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three months ended June, 2022 is primarily attributable to decreased operating
expenses during the six months ended June 30, 2022, when compared to the six
months ended June 30, 2021.

Liquidity and Capital Resources

At June 30, 2022, our cash and cash equivalent balance totaled $9,007 thousand compared to $7,607 thousand at December 31, 2021, an increase of $1,400 thousand.


At June 30, 2022, our current assets were in excess of current liabilities
resulting in working capital of $9,146 thousand as compared to $7,293 thousand
at December 31, 2021. During the six months ended June 30, 2022, working capital
has been funded with approximately $4,798 thousand in net cash proceeds from our
equity offerings during 2022. Subsequent to the six months ended June 30, 2022,
the Company raised an additional $1,742 thousand in net cash proceeds by issuing
approximately 1,592 thousand shares to clirSPV LLC. This equity offering was
made pursuant to a purchase right agreement between clirSPV LLC and the Company.
Refer to Note 9 - Subsequent Events for further details.

Operating activities for the six months ended June 30, 2022, resulted in cash
outflows of $3,347 thousand, primarily due to the loss for the period of $3,128
thousand, offset with non-cash expenses of $179 thousand.

Operating activities for the six months ended June 30, 2021, resulted in cash
outflows of $3,674 thousand, primarily due to the loss for the period of $4,312
thousand, offset with non-cash expenses of $1,124 thousand.

Investing activities for the six months ended June 30, 2022, resulted in cash
outflows of $78 thousand in disbursements for fixed and intangible assets, and
cash inflows of $37 thousand in proceeds from fixed asset sales, compared to
cash outflows of $94 thousand in disbursements for fixed and intangible assets
for the six months ended June 30, 2021.

Financing activities for the six months ended June 30, 2022, included $4,798
thousand in net proceeds from the sale of 501 thousand shares of our common
stock through our ATM program at an average price of $1.24 per share, and sale
of 4.2 million shares of our common stock through a public offering at an
average price of $1.11 per share.

Financing activities for the six months ended June 30, 2021, included $5,309
thousand in net proceeds from the sale of 1,093 thousand shares of our common
stock at an average price of $5.03 per share through our ATM program. Financing
activities for the six months ended June 30, 2021, also included $277 thousand
from the exercise of option awards and warrants.

Off-Balance Sheet Transactions

We do not have any off-balance sheet transactions.

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