UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)

For the quarterly period ended

March 31, 20212022

or 

For the transition period from ______ to______.

Commission file number: 001-33059

FUEL TECH, INC.

(Exact name of registrant as specified in its charter)

Fuel Tech, Inc.

27601 Bella Vista Parkway

Warrenville, IL 60555-1617

630-845-4500

www.ftek.com

(Address and telephone number of principal executive offices)

  ________________________________

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act. (Check one):

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 ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).    Yes  ☐    No  ☒

On April 30, 202129, 2022 there were outstanding 30,263,791 sharesoutstanding 30,296,297 shares of Common Stock, par value $0.01 per share, of the registrant.

FUEL TECH, INC.

Form 10-Q for the three-monththree-month period ended March 31, 20212022

INDEX

1.     General

Organization

Fuel Tech, Inc. and subsidiaries ("Fuel Tech", the "Company", "we", "us" or "our") develops and provides proprietary technologies for air pollution control, process optimization, water treatment, and advanced engineering services. These technologies enable customers to operate in a cost-effective and environmentally sustainable manner.

The Company’s NOxnitrogen oxide (NOx) reduction technologies reduce nitrogen oxide emissions from boilers, furnaces, and other stationary combustion sources. To reduce NOx emissions, our technologies utilize advanced combustion modification techniques and post-combustion NOx control approaches including non-catalytic, catalytic, and combined systems. The Company also provides solutions for the mitigation of particulate matter, including particulate control with electrostatic precipitator products and services, and using flue gas conditioning systems which modify the ash properties of particulate for improved collection efficiency. The Company’s FUEL CHEM® technology improves the efficiency, reliability, fuel flexibility, boiler heat rate, and environmental status of combustion units by controlling slagging, fouling, corrosion, and opacity. Water treatment technologies include DGI™ Dissolved Gas Infusion Systems which utilize a patented nozzle to deliver supersaturated oxygen solutions and other gas-water combinations to target process applications or environmental issues. This infusion process has a variety of applications in the water and wastewater industries, including remediation, aeration, biological treatment, and wastewater odor management.

Many of Fuel Tech’s products and services rely heavily on the Company’s exceptional Computational Fluid Dynamics modeling capabilities, which are enhanced by internally developed, high-end visualization software.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP")(U.S. GAAP) for interim financial information and with the instructions to Form 10-Q10-Q and Article 10 of Regulation S-XS-X of the Exchange Act. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. In the opinion of management, the financial statements reflect all adjustments (consisting of normal recurring accruals) considered necessary for athe fair presentationstatement of the statementsFuel Tech's financial position, cash flows, and results of operations for the periods presented. All significant intercompany transactions and balances have been eliminated. The results of operations for the three months ended March 31, 20212022 are not necessarily indicative of the results to be expected for the full year ending December 31, 2021.2022. For further information, refer to the audited consolidated financial statements and footnotes thereto included in Fuel Tech’s Annual Report on Form 10-K10-K for the year ended December 31, 20202021 as filed with the Securities and Exchange Commission.

COVID-19COVID-19 Pandemic and Geopolitical Events

The emergenceeffects of the coronavirus (COVID-19) around the world presents(COVID-19) global pandemic have presented significant risks to the Company, not all of which the Company is able to fully evaluate or even foresee at the current time. The COVID-19 pandemic has affected the Company’s operations in the three months ended March 31, 2021, althoughAlthough the impact of the pandemic is difficult to quantify, and may continue to do so indefinitely thereafter. Thethe Company has experienced, and may continue to experience, reductions in demand for certain of our products due to the delay or abandonment of ongoing or anticipated projects due to our customers’, suppliers’ and other third parties’ financial distress or concern regarding the volatility of global markets.

Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine may impact new or existing projects and the prices and availability of raw materials, energy and other materials. These events may also impact energy and regulatory policy nationally or regionally for the impacted regions. 

Management cannot predict the full impact of the COVID-19COVID-19 pandemic and geopolitical events on the Company’s sales and marketing channels and supply chain, and as a result, the ultimate extent of the effects of the COVID-19 pandemic on the Company is highly uncertain and will depend on future developments. Such effects could exist for an extended period of time even aftertime. The Company continues to monitor the pandemic might end.

Private Placement Offering

On February 11, 2021, Fuel Tech entered into a securities purchase agreement to issue and sell, in a private placement, 5,000,000 shares of Common Stock and 2,500,000 warrants exercisable for a total of 2,500,000 shares of Common Stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812,500, before deducting placement agent fees and offering expenses of $1,783,000. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expirepotential impacts on the five and one-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale.  In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of Common Stock.  The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of Common Stock and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Shares and the Warrant Shares for resale.business. 

2.     Summary of Significant Accounting Policies

Restricted cash

Restricted cash as of March 31, 20212022 represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A. The balance of restricted cash totaling $420$1,066 is comprised of $150 in current assets relating to existing standby letters of credit with varying maturity dates and expire no later than March 31, 2022 and $270 in long-term assets will remain throughdates, the expiration dates of the underlying standby letter of credits (the latest maturity date is February 1, 2023) 2023, with BMO Harris Bank N.A. Refer to Note 10 Debt Financing for further information on the Cash Collateral Security agreement with BMO Harris Bank N.A.

The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statements of Cash Flows:

Leases

Inventories

Inventories consist primarily of equipment constructed for resale and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. At March 31, 2022 and December 31, 2021, inventory included equipment constructed for resale of $227 and $227, respectively, and spare parts, net of reserves of $134 and $121, respectively. Usage is recorded in cost of sales in the period that parts were issued to a project, used to service equipment, or sold to customers. Inventories are periodically evaluated to identify obsolete or otherwise impaired parts and are written off when management determines usage is not probable. The Company appliesestimates the provisionsbalance of Accounting Standards Codification ("ASC") 842, Leases.  The Company determines if an arrangement is a lease at inceptionexcess and obsolete inventory by evaluating whetheranalyzing inventory by age using last used and original purchase date and existing sales pipeline for which the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset. Right-of-use ("ROU") assets and lease liabilities are recognized at the lease commencement date based on the present value of the future minimum lease payments over the lease term. Operating ROU assets also include the impact of any lease incentives. Operating leases are included in right-of-use ("ROU") operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Consolidated Balance Sheets.inventory could be used. 

Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.

We have lease agreements with lease and non-lease components, and we elected the practical expedient to not separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient to keep leases with an initial term of 12 months or less off of the consolidated balance sheet.

3.     Revenue

The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. Fuel Tech’s sales of products to customers generally represent single performance obligations. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.

We generally expense sales commissions on a ratable basis when incurred because the amortization period would have been one year or less. These costs are recorded within selling, general and administrative expenses within the Condensed Consolidated Statements of Operations.

Air Pollution Control Technology

Fuel Tech’s APC contracts are typically six to eighteen months in length. A typical contract will have three or four critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.

As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is not met.

Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses).

Fuel Tech’s APC product line also includes ancillary revenue for post contractual goods and services.  Revenue associated with these activities are recognized at point in time when delivery of goods or completion of the service obligation is performed.

Fuel Tech has installed over 1,200 units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.

FUEL CHEM

Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services.

On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.  These projects are similar in nature to the APC projects described above and for those project where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. 

For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.

The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.

The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company’s right to consideration is unconditional.

Disaggregated Revenue by Product Technology

The following table presents our revenues disaggregated by product technology:

Disaggregated Revenue by Geography

The following table presents our revenues disaggregated by geography, based on the location of the billing addresses of our customers:end-user:

Timing of Revenue Recognition

The following table presents the timing of our revenue recognition:

Contract Balances

The timing of revenue recognition, billings, and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the consolidated balance sheets. In our Air Pollution Control Technology(APC) technology segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. For the FUEL CHEM technology segment, deliveries made in the current period but billed in subsequent periods are also considered unbilled receivables (contract assets). These assets are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. At March 31, 20212022 and December 31, 20202021, contract assets for APC technology projects were approximately $355$2,222 and $1,927,$1,277, respectively, and are included in accounts receivable on the condensed consolidated balance sheets. There were no contract assets for the FUEL CHEM technology segment as of March 31, 2022 or December 31, 2021.  

However, the Company will periodically bill in advance of costs incurred before revenue is recognized, resulting in contract liabilities. These liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Contract liabilities were $787$522 and $850,$390, at March 31, 20212022 and December 31, 20202021, respectively, and are included in other accrued liabilities on the consolidated balance sheets.

Changes in the contract asset and liability balances during the three month period ended March 31, 20212022, were not materially impacted by any other items other than amounts billed and revenue recognized as described previously. Revenue recognized that was included in the contract liability balance at the beginning of the period was $230 for the three months ended March 31, 2022 and $108 for the three months ended March 31, 2021, and $248 for three months ended March 31, 2020, which represented primarily revenue from progress towards completion of our Air Pollution ControlAPC technology contracts.

As of March 31, 2022 and December 31, 2021, we had one0 construction contractcontracts in progress that waswere identified as a loss contract and a provision for losses of $50 was recorded in other accrued liabilities on the consolidated balance sheet. Refer to Footnote 14 for an accrual related to an equipment failure issue with a Customer that requires remedy under the warranty provision of the customer contract. As of December 31, 2020, we had one construction contract in progress that was identified as a loss contract and a provision for losses in the amount of $176 was recorded in other accrued liabilities on the consolidated balance sheet.

Remaining Performance Obligations

Remaining performance obligations represents the transaction price of Air Pollution ControlAPC technology booked orders for which work has not been performed. As of March 31, 20212022, the aggregate amount of the transaction price allocated to remaining performance obligations was $5,151.$9,552. The Company expects to recognize revenue on approximately $3,000$7,403 of the remaining performance obligations over the next 12 months with the remaining recognized thereafter.

Accounts Receivable

The components of accounts receivable are as follows:

4.     Restructuring Activities

On January 18, 2019, the Company announced a planned suspension of its Air Pollution Control (“APC”)APC business operation in China. This action was part of Fuel Tech’s ongoing operational improvement initiatives designed to prioritize resource allocation, reduce costs, and drive profitability for the Company on a global basis. The transition associated with the suspension of the APC business which has taken place through March 31, 20212022 includes staff rationalization and reduction, supplier and partner engagement, and the monetization of certain assets. The remaining transition activities include the execution of the activities to satisfy the requirements for the remaining APC projects in China (with a backlog totaling approximately $16)$6) in addition to collection efforts for the remaining accounts receivable.

The following table presents our revenues and net income which includes the Restructuring charge line item within the Condensed Statements of Operations(loss) for 20212022 and 20202021 in China as follows:

Total assets primarily consist of cash, accounts receivable, contract assets, prepaid expenses, and other current assets. Total liabilities consist of accounts payable and certain accrued liabilities.

The following table presents net assets in China as follows:

5.     Accumulated Other Comprehensive Loss

The changes in accumulated other comprehensive loss by component were as follows:

6.     Treasury Stock

Common stock held in treasury totaled 963,509976,006 and 948,347963,509 with a cost of $2,251 and $2,234 and $2,182 at March 31, 20212022 and December 31, 20202021, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested in the periods presented.

7.     Earnings per Share

Basic earnings per share excludes the dilutive effects of stock options, restricted stock units (RSUs), warrants, and the nil coupon non-redeemable convertible unsecured loan notes. Diluted earnings per share includes the dilutive effect of the nil coupon non-redeemable convertible unsecured loan notes, RSUs, warrants, and unexercised in-the-money stock options, except in periods of net loss where the effect of these instruments is anti-dilutive. Out-of-money stock options and warrants are excluded from diluted earnings per share because they are anti-dilutive.unlikely to be exercised and would be anti-dilutive if they were exercised. For the three months ended March 31 2021, basic earnings per share has been adjusted to include dilutive options and RSU's.  For the three months ended March 31, 2020, 2022, basic earnings per share is equal to diluted earnings per share because all outstanding stock awards, warrants, and convertible loan notes are considered anti-dilutive during periods of net loss. For the three months ended March 31, 2021, basic earnings per share has been adjusted to include dilutive options and RSU's.

The following table sets forth the weighted-average shares used in calculating the earnings per share for the three months ended March 31, 2021 2022 and 20202021.

For the three months ended March 31, 2022 and 2021, Fuel Tech had outstanding equity awards of 346,500 and 144,500, respectively, and warrants of 2,850,000 in both periods, which were antidilutive for the purpose of the calculation of diluted earnings per share. For the three month period ended March 31, 2022, Fuel Tech had 56,000 incremental equity awards that were excluded from the computation of diluted earnings per share as the inclusion of such would have been anti-dilutive due to a net loss in the period. These equity awards could potentially dilute basic earnings per share in future years.  

8.     Stock-Based Compensation

Under our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. 2014 Long-Term Incentive Plan (Incentive Plan), awards may be granted to participants in the form of Non-Qualified Stock Options, Incentive Stock Options, Stock Appreciation Rights, Restricted Stock, Restricted Stock Units (“RSUs”),RSUs, Performance Awards, Bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan may be our directors, officers, employees, consultants, or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676 shares that may be issued or reserved for awards to participants under the Incentive Plan. As of March 31, 20212022, Fuel Tech had 2,548,8012,616,298 shares available for share-based awards under the 2014Incentive Plan.

We did not record any excess tax benefits within income tax expense for the three months ended March 31, 20212022. Given the Company has a full valuation allowance on its deferred tax assets, there were no excess tax benefits to record for the three months ended March 31, 20212022. In addition, we account for forfeitures of awards based on an estimate of the number of awards expected to be forfeited and adjusting the estimate when it is no longer probable that the employee will fulfill the service condition.

Stock-based compensation is included in selling, general, and administrative costs in our Condensed Consolidated Statements of Operations. The components of stock-based compensation for the three months ended March 31, 2021 2022 and 20202021 were as follows:

Stock Options

Stock options granted to employees under the Incentive Plans have a 10-year life and they vest as follows: 50% after the second anniversary of the award date, 25% after the third anniversary, and the final 25% after the fourth anniversary of the award date. Fuel Tech calculates stock compensation expense for employee option awards based on the grant date fair value of the award, less expected annual forfeitures, and recognizes expense on a straight-line basis over the four-yearfour-year service period of the award. Stock options granted to members of our board of directors vest immediately. Stock compensation for these awards is based on the grant date fair value of the award and is recognized in expense immediately.

Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of employee stock options. The principal variable assumptions utilized in valuing options and the methodology for estimating such model inputs include: (1)(1) risk-free interest rate – an estimate based on the yield of zero–coupon treasury securities with a maturity equal to the expected life of the option; (2)(2) expected volatility – an estimate based on the historical volatility of Fuel Tech’s Common Stock for a period equal to the expected life of the option; and (3)(3) expected life of the option – an estimate based on historical experience including the effect of employee terminations.

Stock option activity for Fuel Tech’s Incentive Plans for the three months ended March 31, 20212022 was as follows:

As of March 31, 20212022, there was no0 unrecognized compensation cost related to non-vested stock options granted under the Incentive Plans.

Restricted Stock Units

Restricted stock units (RSUs)RSUs granted to employees vest over time based on continued service (typically vesting over a period between two and four years). Such time-vested RSUs are valued at the date of grant using the intrinsic value method based on the closing price of the Common Shares on the grant date. Compensation cost, adjusted for estimated forfeitures, is amortized on a straight-line basis over the requisite service period.

In addition to the time vested RSUs, the Company entered into a 2021 Executive Performance RSU Award Agreement (the “2021 Agreement”) with certain officers, including its President and Chief Executive Officer pursuant to which each 2021 Participating Executive will have the opportunity to earn a specified amount ofperiod. At March 31, 2022, there is 0 unvested restricted stock units (RSUs). The amount of RSUs awarded, if any, will be based on the Company’s achievement of varying levels of operating income before the impact of incentive pay (but including adjustments to reflect the payment of sales commissions) in fiscal 2021 (“Operating Income”), as determined by the Company, in its sole discretion. Nevertheless, no Participating Executive will be entitled to any such RSUs unless the Company achieves a minimum of $1 million in Operating Income in 2021. If awarded, such RSUs will vest in equal amounts (i.e., 1/3, 1/3 and 1/3) over three years commencing one year after the grant date based on continued service. Such RSUs are valued at the date of grant using the intrinsic value method based on the closing price of the Company’s common stock on the grant date. Currently there is no expense reflected in the financial statements for these awards as the achievement is not considered probable. 

At March 31, 2021, there is $80 of0 unrecognized compensation cost related to all non-vested share-based compensation arrangements granted under the Incentive Plan. That cost is expected to be recognized over the remaining requisite service period of 0.97 years.

A summary of restricted stock unit activity for the three months ended March 31, 20212022 is as follows:

The fair value of restricted stock that vested during the three month period ending March 31, 20212022 was $75.$68.

Deferred Directors Fees

In addition to the Incentive Plans, Fuel Tech has a Deferred Compensation Plan for Directors (Deferred Plan). Under the terms of the Deferred Plan, Directors can elect to defer Directors’ fees for shares of Fuel Tech Common Stock that are issuable at a future date as defined in the agreement. In accordance with ASC Accounting Standards Codification (ASC) 718, Fuel Tech accounts for these awards as equity awards as opposed to liability awards. During the three month periods ended March 31, 2021 2022 and 20202021, Fuel Tech recorded no0 stock-based compensation expense under the Deferred Plan.

9.      Warrants

On February 11, 2021, Fuel Tech entered into a securities purchase agreement to issue and sell, in a private placement, 5,000,000 shares of Common Stock and 2,500,000 warrants exercisable for a total of 2,500,000 shares of Common Stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812,500, before deducting placement agent fees and offering expenses of $1,783,000. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale.  In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of Common Stock.  The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of Common Stock and expire on the five and one-half year anniversary of the effective date of the registration statement registering the Shares and the Warrant Shares for resale.

Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of the warrants. The principal variable assumptions utilized in valuing warrants and the methodology for estimating such model inputs are: (1) risk-free interest rate of 0.59%, an estimate based on the yield of zero–coupon treasury securities with a maturity equal to the expected life of the warrant; (2) expected volatility of 94.66% – an estimate based on the historical volatility of Fuel Tech’s Common Stock for a period equal to the expected life of the warrant; and (3) expected life of the warrant of five and one-half years based on the term of the warrant. 

The calculated fair value allocated to the warrants is $7,336,881.  This amount has been recorded as Additional paid in capital - warrants and is shown net in the Additional paid in capital line of the condensed consolidated balance sheets.  

The issuance of warrants to purchase shares of the Company's common stock are summarized as follows:

10.     Debt Financing

On April 17, 2020, the Company received $1,556 in loan proceeds from the Paycheck Protection Program (the “PPP”)(PPP), established pursuant to the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) and administered by the U.S. Small Business Administration (“SBA”)(SBA). The unsecured loan is evidenced by a promissory note of the Company dated April 15, 2020 (the “Note”) in the principal amount of $1,556, issued to BMO Harris Bank N.A. (the “Bank”), the lender. 

On January 8, 2021, the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to fund its qualified payroll expenses. The Company accountsaccounted for the PPP Loan as debt in accordance with Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) ASC 470, Debt and accruesaccrued interest in accordance with the interest method under FASB ASC 835-30.835-30. When the loan was forgiven, the Company reduced the non-current liability by the amount forgiven and recorded other income in the consolidated statementCondensed Consolidated Statement of operations.  Operations.  

11.     Business Segment and Geographic Financial Data

Business Segment Financial Data

We segregate our financial results into two reportable segments representing two broad technology segments as follows:

The “Other” classification includes those profit and loss items not allocated to either reportable segment. There are no inter-segment sales that require elimination.

We evaluate performance and allocate resources based on reviewing gross margin by reportable segment. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies (Note 1 in our annual report on Form 10-K)10-K). We do not review assets by reportable segment, but rather, in aggregate for the Company as a whole.

Information about reporting segment net sales and gross margin from continuing operations are provided below:

Geographic Segment Financial Data

Information concerning our operations by geographic area is provided below. Revenues are attributed to countries based on the location of the customer.end-user. Assets are those directly associated with operations of the geographic area.

12.     Leases

Leases

We have seven total operating leases which relate to both office space locations and certain office equipment. Our leases have remaining lease terms of 2 months to 4 years. Our leases do not contain any material residual value guarantees or material restricted covenants and we currently have no material sublease arrangements. We have no financing leases as defined under ASC 842.

Total operating lease expense for the three months ended March 31, 2021 and 2020, is as follows:

The weighted average remaining lease term was 3.09 years as of March 31, 2021. The weighted average discount rate was 2.84% as of March 31, 2021.

Remaining maturities of our existing lease liabilities as of March 31, 2021 were as follows:

The following is the balance sheet classification of our existing lease liabilities as of March 31, 2021: