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Advanced Emissions Solutions

ades · NASDAQ Industrials
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Ticker ades
Exchange NASDAQ
Sector Industrials
Industry Industrial - Pollution & Treatment Controls
Employees 51-200
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FY2023 Annual Report · Advanced Emissions Solutions
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2023
Annual Report

Dear Shareholders,

As we begin a new chapter in our journey at Arq, I am filled with a sense of gratitude and
anticipation for what lies ahead. Reflecting on the past year, we navigated a landscape
marked by both challenges and triumphs, achieving remarkable milestones that have
further solidified our position in the industry. We continue to transform our business from
an industrial manufacturing company to an environmental technology company. Our
journey in 2023 was not just about financial metrics or operational efficiencies; it was about
solidifying and building upon our
foundation for a future driven by innovation,
transformation, commitment, and positioning our company for an even better future.

2023 – A Year of Strategic Achievements and Resilience

The past year was transformative for Arq, as we demonstrated our capability to achieve
strong financial performance while advancing our strategic initiatives. We closed the year
on a high note with our fourth quarter of 2023 results, with a 20% increase in revenue over
the previous year, a gross margin that nearly doubled to approximately 50%, and the
achievement of positive net income for the first time in eight quarters. These results are a
focused execution and our unwavering dedication to maximizing
testament
it was clear to me that Arq represented a fantastic
shareholder value. Prior to joining,
opportunity. The key was successful execution of our plans.

to our

Success required unwavering focus on execution from the broader team around me. To
achieve this, it was necessary to make several changes to the management team. I am now
entirely confident that we have in place the right individuals throughout the company to
collectively deliver on our strategy.

We embarked on a journey to optimize our foundational Powdered Activated Carbon (PAC)
business, enhancing its economic and operational efficiencies. This was not just about
improving the bottom line; but also the sustainability and resilience of our core operations.

Our PAC business is our foundational asset. Our initiatives to improve the PAC business,
from reducing costs, to eliminating unprofitable contracts, have borne fruit. This was
evidenced by our strong performance in the second half of 2023. We have proven that PAC
can be a cash contributor, and I am excited about its ability to contribute to our growth and
value creation, with profitability anticipated for full-year 2024.

Parallel to this, we have been executing on our strategic expansion into the Granular
Activated Carbon (GAC) market, a move that diversifies our portfolio and opens up an
entirely new market opportunity and long-term growth driver for Arq. We commenced
construction on our Red River expansion project, and expect to commission the facility
later this year. Our goal is to serve the rapidly growing global demand for GAC products
and solutions. We are uniquely positioned to leverage our existing asset and portfolio
base to drive further differentiation, including our own bituminous coal waste-derived
feedstock supply, which drives cost, supply surety, and environmental benefits.

As part of this shift in focus, we are proud to have recently completed our corporate
rebrand to Arq. This important milestone was achieved just one year after our
transformational acquisition and reflects the company's evolution to an environmental
technology company. We are focused on providing differentiated solutions for faster
growing markets. With the new brand, new products and new attitude in place, we are
now better positioned to execute on our ambitions, and have a brand and corporate
identity that aligns with our corporate vision.

Our Key Milestones for 2024 and Beyond

As we embark on the year ahead, our roadmap is marked by several key milestones that
will evidence our successful execution and elevate our company to new heights:

•

loss-making contracts,

PAC Optimization: We will continue to optimize our PAC portfolio by driving
additional market penetration, eliminating all
improving
product mix, and driving higher ASPs. First, we have taken actions that aim to
fundamentally improve the profitability of our legacy PAC business. While much of
the work is now complete and is already evident in our financial results, we'll
continue to optimize the portfolio and constantly look for ways to enhance our
operations and profitability. We have quickly proven that PAC can deliver positive
results to our company, and we will continue to focus on maximizing the value of
this foundational asset in 2024 and beyond.

• GAC Expansion: We continue to execute on the development of our strategic
25 million pound GAC facility at Red River. commissioning of the facility is
expected to conclude in the fourth quarter of 2024 and first deliveries are
expected to occur from the first quarter of 2025. Another critical focus for 2024
is securing strategic contracts for our expanded GAC capacity. Our goal is to
in advance of the Red River facility's completion.
finalize agreements well
strategic
These contracts will provide third party
transformation and, ensure a robust order book and revenue visibility into
2025 and beyond. We are highly encouraged by our ongoing conversations,
and look forward to providing updates throughout 2024.

validation of our

• Commissioning of our Corbin Facility: Corbin is set to be commissioned in
mid-second quarter of 2024.
Successful commissioning is expected to
significantly enhance our production capabilities and efficiencies, and serve as
a unique waste-derived feedstock for our growing GAC capabilities – setting a
new industry standard for sustainable production practices.

• Product & Market Expansion: Our R&D efforts are poised to unveil a wider
set of applications for our waste derived feedstock, such as an environmentally
responsible asphalt additive, as well as use in other industries. This will drive
additional value for our stakeholders while also providing additional product
and market diversification. 2024 will also see us expanding our efforts to widen
focus on the European market.
our geographic footprint, with a special
Regulatory changes and the undersupply in Europe present a significant
strategic opportunity for Arq. Our aim is not just to expand our reach but to
increase shareholder returns by becoming a key player in the global effort to
address environmental challenges through innovative carbon solutions.

• Arq’s ESG Strategy & Approach: To best demonstrate our environmental
credentials today and how they might be enhanced in the future, we instigated
a company-wide ESG review in the second half of 2023. This initial reporting
will be concluded in the second quarter of 2024, with a more fulsome report
later this year, and I look forward to sharing it with all our stakeholders. Its
research and production will act as a vital catalyst in driving our team’s
thinking with regards to how we can make Arq truly “sustainably” profitable.

These milestones are not just markers of progress; they are a testament to our vision,
our strategy, and our commitment to making a positive impact on the world. As we
move forward, our focus remains on delivering on these commitments, driving growth,
and enhancing shareholder value.

cash generation, ongoing cost

We are well positioned to fund the investments we are making in 2024 from cash on
customer
hand,
prepayments for GAC contracts, and a planned refinancing and potential expansion of
our term loan. And importantly, we have no current plans to dilute our existing
shareholders by selling equity.

reduction initiatives, potential

We expect the following key benefits to result from the key projects we are executing
and investments we are making:

1. Deliver attractive targeted payback of 3 years or less on our Red River investments
2.

Establish a differentiated waste-derived feedstock source at Corbin with cost &
sustainability benefits

Expand products and solutions portfolio and extend into rapidly growing markets

3.
4. Supplement PAC foundation with strong and attractive growth via GAC capabilities
5. Continue our ongoing transformation to an environmental tech company
6. Drive shareholder returns

EPA Regulations and GAC Market Opportunity

On April 10, 2024, the EPA issued its first-ever enforceable drinking water regulations,
creating a standard that reduces permissible PFAS levels by more than 90% from prior
EPA guidance.

These changes are focused on reducing PFAS contamination in U.S. drinking water,
protecting public health, and improving environmental integrity. We applaud the EPA for
taking this important step towards addressing the critical issue of PFAS contamination.

The newly announced regulations are expected to drive even stronger near and long-
term demand for Arq's solutions, including our unique waste-derived GAC. We estimate
that the implementation of these regulations will drive a 3-5x or greater increase in GAC
demand solely related to the water market over the coming years. This comes at a time
when the GAC market was already significantly undersupplied. We expect to see similar
PFAS regulations globally, further expanding and growing our addressable market.

Arq is excited and uniquely positioned to help potential customers meet the newly
announced, materially more stringent drinking water regulations. Our team continues to
execute efficiently on our strategic Red River growth project, where we remain in highly
active discussions with potential customers and continue to anticipate entering into
initial GAC contracts in the very near future and target full contracting of the 25 million
pound per year capacity in advance of first production later this year.

To Our Valued Partners, Customers, and Employees

Our journey is made possible by the support and collaboration of our partners and
customers. We are grateful for your trust and confidence in Arq, as we work together to
address pressing business and environmental challenges. Your partnership inspires us to
push the boundaries of what is possible, driving us to innovate and excel
in our
endeavors.

To our dedicated employees, your hard work, creativity, and commitment are the
cornerstone of our success. Your resilience in the face of challenges, your unwavering
dedication to our mission, and your relentless pursuit of excellence have not only
propelled Arq forward, but have also paved the way for a brighter, more sustainable
future. I extend my deepest appreciation for your contributions and for the integral role
you play in our ongoing journey.

Our Commitment to You

To our shareholders, I want to assure you of our relentless commitment to driving long-
term value. Your support fuels our ambition and shapes our vision for the future. As we
navigate the opportunities and challenges that lie ahead, we do so with the assurance
that our best days are still ahead of us.

Together, we will continue to build on our legacy of innovation and excellence, ensuring
that Arq delivers significant shareholder returns, remains a leader in our industry, and a
champion for the environment. Crucially, as we execute on our business plan, we are
also focused on maintaining ongoing, transparent and accessible communications with
our stockholders and other stakeholders. We aim to communicate better than ever
before, with more information and more regularity. We are truly excited about what we
are building at Arq, and we want as many people to know as possible, so we will be
attending more investor events, hosting more roadshows and generally seeking to
educate the wider investment community about what we are doing, why it can make a
difference to our communities and how that can benefit all stakeholders.

Thank you once again for your continued support, trust, and confidence in Arq. Here's to
a year of growth, innovation, and shared success.

Warm regards,

Bob Rasmus
President, Chief Executive Officer & Director, Arq

Caution on Forward-Looking Statements

This annual report contains forward-looking statements within the meaning of the
federal securities laws. Actual results could differ materially from these forward-looking
statements. For a discussion of certain important risk factors that relate to these
forward-looking statements, please refer to the Risk Factors included in our Form 10-K

United States
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
______________________________________
FORM 10-K
______________________________________

☒

☐

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2023 

or

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 001-37822 

ARQ, INC.
(Name of registrant as specified in its charter)

Delaware
(State of incorporation)

27-5472457
(IRS Employer Identification No.)

8051 E. Maplewood Ave, Suite 210, Greenwood Village, CO, 80111 
(Address of principal executive offices) (Zip Code)

(Registrant’s telephone number, including area code): (720) 598-3500 

Securities registered under Section 12(b) of the Act:

Class
Common stock, par value $0.001 per share

Trading Symbol
ARQ

Name of each exchange on which registered
Nasdaq Global Market

Securities registered under Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    ¨  Yes    x  No

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Act.    ¨  Yes    x  No
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.    x  Yes    ¨  No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 
of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    x  Yes    ¨  No
Indicate by check mark if disclosure of delinquent filers in response to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the 
best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this 
Form 10-K.  ¨
Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer  or  a  smaller  reporting  company.  See 
definition of "large accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act. 

Large accelerated filer

Non-accelerated filer

¨

☒

Accelerated filer

Smaller Reporting Company

Emerging growth company

¨

☒

☐

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 has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control 
over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued 
its audit report. ¨
If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing 
reflect the correction of an error to previously issued financial statements. ☐
Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by 
any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act.)    ☐  Yes    x  No
The aggregate market value of the voting stock held by non-affiliates of the registrant was approximately $45.8 million based on the last reported bid price 
of the Common Stock on the Nasdaq Global Market on June 30, 2023. The number of shares outstanding of the registrant’s Common Stock, par value $0.001 
per share, as of March 5, 2024 was 33,238,436. 

Portions of Part III of this Form 10-K are incorporated by reference from the Registrant's definitive proxy statement to be filed with the Securities and Exchange Commission no 
later than 120 days after the end of the Registrant's fiscal year.

Documents Incorporated By Reference

 
 
 
 
 
 
ARQ, INC.
ANNUAL REPORT ON FORM 10-K
FOR THE FISCAL YEAR ENDED DECEMBER 31, 2023 

TABLE OF CONTENTS

Business

Risk Factors

Unresolved Staff Comments

Cybersecurity

Properties

Legal Proceedings

Mine Safety Disclosures

Market for Registrant's Common Equity, Related Stockholder Matters and Issuer 
Purchases of Equity Securities

Reserved

Management's Discussion and Analysis of Financial Condition and Results of Operations

Financial Statements and Supplementary Financial Information
Changes in and Disagreements with Accountants on Accounting and Financial 
Disclosure

Controls and Procedures

Other Information

Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Directors, Executive Officers and Corporate Governance

Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related 
Stockholder Matters
Certain Relationships and Related Transaction and Director Independence

Principal Accountant Fees and Services

Exhibits and Financial Statement Schedules

Form 10-K Summary

Page

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10

21

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PART I.
ITEM 1.

ITEM 1A.

ITEM 1B.

ITEM 1C.

ITEM 2.

ITEM 3.

ITEM 4.

PART II.

ITEM 5.

ITEM 6.

ITEM 7.

ITEM 8.

ITEM 9.

ITEM 9A.

ITEM 9B.

ITEM 9C.

PART III.
ITEM 10.

ITEM 11.

ITEM 12.
ITEM 13.

ITEM 14.

PART IV.
ITEM 15.

ITEM 16.

SIGNATURES

i

Item 1. Business

General

PART I

Arq, Inc. ("Arq", the "Company," "we," "us", "our," or similar pronouns) is an environmental technology company principally 
engaged  in  the  sale  of  consumable  air,  water,  and  soil  treatment  solutions  including  activated  carbon  ("AC")  and  chemical 
technologies. Our proprietary AC products enable customers to reduce air, water, and soil contaminants, including mercury, per 
- and polyfluoroalkyl substances ("PFAS") and other pollutants, to meet the challenges of existing and pending air quality and 
water regulations. We manufacture and sell AC and other chemicals used to capture and remove contaminants for the coal-fired 
power  generation,  industrial,  municipal  water  and  air,  water  and  soil  treatment  and  remediation  markets  (collectively,  the 
advanced purification technologies or "APT" market). 

Our  predecessor,  ADA-ES,  Inc.  ("ADA"),  a  Colorado  corporation,  was  incorporated  in  1997.  Pursuant  to  an  Agreement  and 
Plan  of  Merger,  effective  July  1,  2013,  the  Company  (formerly  known  as  Advanced  Emissions  Solutions,  Inc.  ("ADES")),  a 
Delaware company incorporated in 2011, succeeded ADA as the publicly-held corporation and ADA became a wholly-owned 
subsidiary of the Company. In 2018, we acquired ADA Carbon Solutions, LLC ("Carbon Solutions") to enter into the broader 
AC market and to expand our product offerings in the mercury control industry and other applicable AC markets. In February 
2023, we acquired 100% of the equity of the subsidiaries of Arq Limited (the "Arq Acquisition," and hereafter the Arq Limited 
subsidiaries referred to as "Legacy Arq") to secure access to a feedstock, a manufacturing facility and certain patented processes 
to manufacture new advanced granular activated carbon ("GAC") products for sale into markets to the APT and other markets. 
In  February  2024,  as  part  of  a  larger  rebranding,  the  Company  changed  its  name  to  Arq,  Inc.,  and  on  February  1,  2024,  our 
common stock commenced trading under the ticker symbol, "ARQ".

This  Annual  Report  on  Form  10-K  is  referred  to  as  the  "Form  10-K"  or  the  "Report."  As  used  in  this  Report,  the  terms  the 
"Company," "we," "us" and "our" means Arq, Inc. and its consolidated subsidiaries.

Products and Markets

AC is a specialized sorbent material that is used widely in a host of industrial and consumer applications to remove impurities, 
contaminants  and  pollutants  from  gas,  water,  soil  and  other  product  or  waste  streams.  AC  is  produced  by  activating 
carbonaceous raw materials, including wood, coal, nut shells, resins and petroleum pitch. Properties such as surface area, pore 
volume, surface chemical functionalities and particle size and form can be specifically engineered to selectively target various 
contaminants to meet end-use application requirements. Our AC products are manufactured in several different forms that are 
important for the end-use application, including powdered activated carbon ("PAC"), granular activated carbon, and colloidal 
carbon product ("CCP").

Key markets for AC products include removal of pollutants from coal-fired electrical generation and other industrial processes, 
treatment  of  drinking  and  waste  waters,  industrial  and  renewable  gas  purification  and  odor  removal,  automotive  gasoline 
emission control, soil and ground water remediation and food and beverage process and product purification. Demand for AC 
products has been, and is expected to continue to be driven by increasing environmental regulations pertaining to water, soil, 
and air quality, especially in the developed and more industrialized areas of the world, and general consumer attention towards 
environmental  issues.  Additionally,  we  believe  enhanced  environmental  and  health  advisory  issues  will  continue  to  drive 
demand  for  AC  in  rapidly  developing  countries.  We  pursue  opportunities  to  expand  and  diversify  our  customer  base  into 
markets  for  our  purification  products  including  industrial  applications,  water  treatment  plants  and  other  end  markets.  In 
addition, we see significant opportunities emerging in the soil, sediment and groundwater treatment markets. Increased attention 
has been drawn to the monitoring and treatment of heavy metals, organic and inorganic compounds in groundwater to improve 
overall ground and drinking water quality across North America. AC, in various forms, has and will continue to play a key role 
in these remediation efforts.

Our current products (also referred to as "consumables") are used to purify contaminated liquid, soil, and gas streams from a 
variety of industrial sources including coal-fired power plants and wastewater treatment plants and other end markets. Most of 
the North American coal-fired power generators installed equipment to control air pollutants, such as mercury, prior to or since 
the implementation of the Mercury and Air Toxics Standards ("MATS"). However, many power generators need consumable 
products to complement the operation of installed equipment on a recurring basis to more effectively capture mercury and other 
contaminants.  AC  has  been  adopted  as  the  most  widely-used  technology  to  capture  mercury  due  to  product  efficiency  and 

1

effectiveness, and currently accounts for the majority of the mercury control consumables in the North American market. We 
offer AC and other chemical products and work with customers as they develop and implement a compliance control strategy 
that utilizes the consumables solutions that fit with their unique operating and pollution control configuration. 

Coal-fired  power  plants  continue  to  be  a  significant,  though  declining,  source  of  electricity  generation  in  the  United  States 
("U.S.").  Demand  for  our  AC  products  related  to  coal-fired  electricity  generation  is  highly  dependent  on  the  availability  and 
cost  of  alternative  energy  sources,  such  as  natural  gas,  solar  and  wind  energy.  We  continue  to  pursue  markets  for  our 
purification  products  outside  of  coal-fired  power  generation,  including  industrial  applications,  (such  as  waste-to-energy  and 
cement making), water treatment and other markets. 

For the purification of water, our AC products have been used in the treatment of drinking water, wastewater, contaminated soil 
and  groundwater  to  adsorb  compounds  causing  unpleasant  taste  and  odor  and  other  toxic  contaminants.  Both  industrial  and 
municipal  wastewater  treatment  plants  have  deployed  the  use  of  our  AC  products  in  their  treatment  processes.  Groundwater 
contamination has become a matter of increasing concern to federal and state governments as well as to the public, especially 
over  recent  years.  The  U.S.  AC  market  may  see  significant  growth  from  water  purification  markets,  especially  if  future 
regulations are passed controlling certain chemicals in drinking water. At present, individual states are primarily responsible for 
the protection of groundwater and drinking water. 

The  existing  technologies  for  treatment  of  groundwater,  including  removal  of  the  soil  for  external  treatment  or  landfill, 
pumping the groundwater above surface for treatment and/or installing treatment trenches or barriers all utilize PAC and GAC 
products.  An  emerging  technology  generating  increasing  interest  by  site  engineering  firms  and  owners  is  injecting  highly 
engineered  ACs  into  the  subsoil,  also  described  as  "in  situ"  treatment,  to  intercept  the  contamination  plume  or  to  treat  the 
groundwater.  In  response  to  this  market  opportunity,  in  late  2021,  we  developed  a  new  Colloidal  Carbon  Product  ("CCP") 
platform, FluxSorb RC, which is currently in the initial stages of field testing at multiple contaminated soil and groundwater 
remediation treatment sites. 

Legacy Arq Products and Markets

With the acquisition of Legacy Arq in February 2023, we now control bituminous coal waste reserves and own a manufacturing 
facility, both located in Corbin Kentucky (the "Corbin Facility"). Our facility will remediate these reserves, using a patented 
manufacturing  process  to  convert  bituminous  coal  waste  into  a  purified,  microfine  carbon  powder  known  as  Arq  powderTM  
("Arq Powder") for high value applications, such as for a raw material to produce GAC products. We expect by the end of 2024 
to begin using Arq Powder as a feedstock to produce high-quality GAC products for sale in the APT and other markets. 

We believe Arq Powder has additional potential for us to access new markets and applications. We expect to secure customer 
interest in Arq Powder as an additive into other markets, such as components for asphalt. These products utilizing Arq Powder 
are expected to have a lower carbon footprint compared to similar products utilizing conventional materials. These applications 
are currently in various stages of proof of concept testing or preliminary customer testing.

Sales and Customers

We sell consumables primarily though our internal sales group and are generally under contracts ranging from one to five years. 
We generally recognize revenue on an order-by-order basis. Revenue from our top three customers comprised approximately 
37% of our consumables revenue for the year ended December 31, 2023, and the loss of any of these customers would have a 
material adverse effect on our operating results.

Seasonality

The timing of the sale of our consumable products is dependent upon several factors. Power generation is weather dependent, 
with electricity and steam production varying in response to heating and cooling demands. As a result, our revenue is generally 
higher  in  our  first  and  third  fiscal  quarters  during  the  warmer  and  colder  months  of  the  year.  Abnormally  high  and  low 
temperatures during the summer and winter months, respectively, may significantly increase coal consumption for electricity 
generation and cause increased impurities within various municipalities' water sources, and thus increase the demand for our 
products. Additionally, power generating units routinely schedule maintenance outages in the spring and/or fall depending on 
the  operation  of  their  boilers.  During  the  period  in  which  an  outage  may  occur,  which  may  range  from  one  week  to  over  a 
month, our product sales may decrease.

Also, our revenue and sales volumes are highly dependent upon the level of coal consumption at coal-fired power plants, which 
in  turn  is  significantly  affected  by  the  prices  of  competing  power  generation  sources,  such  as  natural  gas  and  renewables. 

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During  periods  of  low  natural  gas  prices,  natural  gas  provides  a  competitive  alternative  to  coal-fired  power  generation  and 
therefore,  coal  consumption  for  power  generation  may  be  reduced,  which  in  turn  reduces  the  demand  for  our  products.  In 
contrast,  during  periods  of  higher  prices  for  competing  power  generation  sources,  coal  consumption  generally  increases  and 
thus demand for our products also increases.

In  water  purification,  the  sale  of  our  products  depends  on  demand  from  municipal  water  treatment  facilities  that  use  these 
products. Depending on weather conditions and other environmental factors, the summer months historically have the highest 
demand for our PAC products in water treatment. One of the major uses for PAC is for the treatment of taste and odor episodes 
caused by increased degradation of organic contaminants and natural materials in water that occurs during the summer months. 
Additionally, the rainy season generally results in more demand for PAC products to water municipalities due to rain run-offs 
and contaminant dilution.

Competition

Our primary competitors in the AC consumables industry include Cabot Norit Americas, Inc., which is owned by One Equity 
Partners, Calgon Carbon, which is owned by Kuraray Co., Ltd. and Donau Carbon Company. 

Sources and Availability of Raw Materials

Currently, the principal raw material we use in the manufacturing of AC is lignite coal, which is readily available through our 
100% ownership of a lignite coal mine (the "Five Forks Mine") located in Saline, Louisiana. All production from the Five Forks 
Mine is used in our manufacturing process. The Five Forks Mine is operated for us by a subsidiary of the North American Coal 
Company. We may also periodically purchase various ACs to supplement our inventory levels or to produce various products to 
serve certain AC markets. We purchase these various ACs through supply agreements or spot purchases with the producers. 

With the Arq Acquisition, in 2023, we secured a second feedstock, Arq Powder, which is made from bituminous coal waste, 
used in manufacturing of GAC products. Through internal testing, we have demonstrated that Arq Powder can be shaped and 
successfully activated using industrially available equipment and technology with our proprietary know-how. Arq Powder has 
unique properties, including low levels of impurities and small average particle size, which when used as a feedstock to produce 
certain carbon products may provide for advantages compared to lignite coal, other bituminous coals, or oil-based feedstocks in 
terms  of  cost  and  performance.  In  the  U.S.,  the  availability  of  feedstock  for  GAC  manufacturing  is  limited,  as  it  is  either 
supplied by specialty mined coal or coconut husks, which need to be imported. Between the Corbin Facility and the Five Forks 
Mine, we will have a fully integrated supply chain in multiple feedstocks - bituminous coal fines (Corbin Facility) and lignite 
coal (Five Forks Mine) to produce both GAC and PAC products.

We  purchase  various  additives  utilized  in  the  production  of  AC.  The  manufacturing  of  AC  is  dependent  upon  these  various 
additives, which are subject to price fluctuations and supply constraints. In addition, the number of suppliers who provide the 
necessary additives needed to manufacture our ACs is limited. We purchase these additives through supply agreements or spot 
purchases with the producers. Supply agreements with these producers are generally renewed on an annual basis.

We also purchase additives that are included in certain chemical products for resale to our customers through contracts with 
suppliers. The manufacturing of these chemical products is dependent upon certain discrete additives, which are subject to price 
fluctuations  and  supply  constraints.  In  addition,  the  number  of  suppliers  who  provide  the  necessary  additives  needed  to 
manufacture  our  chemical  products  are  limited.  We  purchase  these  chemical  products  through  spot  purchases  with  the 
producers. 

Due to the seasonality of our business, which is primarily driven by our high concentration of customers in the coal-fired plant 
market, our sales and inventory levels may vary throughout the year. We are able to supplement the available production at our 
Red River Plant by purchasing third party consumables to meet customer demand for our consumables.

Facilities

We  own  and  operate  a  manufacturing  plant  (the  "Red  River  Plant"),  located  in  Coushatta,  Louisiana.  We  also  operate  a 
production and distribution facility located on land we lease in Coushatta. In addition, we own and operate the Corbin Facility, 
where we process bituminous coal waste and apply patented technology to produce Arq Powder. In January 2024, the Company 
executed  a  contract  with  a  third-party  contractor  for  the  construction  of  a  GAC  facility  at  the  Red  River  Plant,  (the  "GAC 
Facility") and immediately commenced construction operations. The Company expects to complete commissioning activities at 
the GAC Facility by the end of 2024 and estimates that total construction costs including all equipment purchases will be in the 
range of $62 to $67 million.

3

As of January 2024, major construction work at the Corbin Facility remains on track to be completed on time. We expect to 
commence commissioning activities during the first half of 2024 and estimate that total construction and commissioning costs 
at the Corbin Facility will be in the range of $10 to $15 million.

In  March  2023,  we  sold  100%  of  the  membership  interests  in  Marshall  Mine,  LLC,  which  owned  a  shuttered  lignite  mine 
located outside of Marshall, Texas to a third party. 

Research and Development Activities

We  conduct  research  and  product  development  activities  for  further  enhancement  of  our  consumables.  For  the  years  ended  
December 31, 2023 and 2022, we incurred research and development costs of $3.3 million and $2.1 million, respectively.

Legislation and Environmental Regulations 

Our products and services are used for the reduction of pollutants and other contaminants. Legislation and regulations limit the 
amount of pollutants and other contaminants permitted and may increase the need for our products. Below is a summary of the 
primary legislation and regulation that currently affects the market for our current products.

Federal MATS Affecting Electric Utility Steam Generating Units

The U.S. Environmental Protection Agency ("EPA") final "MATS Rule" went into effect in April 2012. The EPA structured the 
MATS Rule as a Maximum Achievable Control Technology-based ("MACT-based") hazardous pollutant regulation applicable 
to  coal  and  oil-fired  Electric  Utility  Steam  Generating  Units  ("EGU").  EGUs  generate  electricity  through  steam  turbines  and 
have a capacity of 25 megawatts or greater and provide for, among other provisions, control of mercury, control of acid gases 
such as hydrochloric acid and other Hazardous Air Pollutants ("HAPs"). Approximately 1,260 units in the U.S. were coal-fired 
EGUs when the rule was enacted. According to our estimates, the MATS Rule sets a limit that we believe requires the capture 
of 80-90% plus of the mercury in the coal burned in electric power generation boilers as measured at the exhaust stack outlet for 
most  plants.  The  MACT-based  standards  are  also  known  as  National  Emission  Standards  for  Hazardous  Air  Pollutants 
("NESHAP"). Plants generally had four years to comply with the MATS Rule, and implementation of the MATS Rule is now 
largely completed. We estimate that 58% of the coal-fired units that were operating in December 2012 when the MATS Rule 
was finalized have been permanently shut down, leaving approximately 406 units in operation in the U.S. as of December 31, 
2023.

In May 2020, the EPA reconsidered and found that it was not "appropriate and necessary" to regulate HAPs emissions from 
coal- and oil-fired EGUs. However, the EPA expressly stated that the reconsideration neither removed coal- and oil-fired EGUs 
from the list of sources that must comply with the MATS rule, nor rescinded the MATS Rule, which has remained continuously 
in  effect.  On  February  15,  2023,  the  EPA  issued  a  final  rule  revoking  the  May  2020  reconsideration  and  affirming  that  it  is 
"appropriate  and  necessary"  to  regulate  HAP  emissions  from  coal-  and  oil-fired  EGUs.  On  April  3,  2023,  the  EPA  issued  a 
proposed update to MATS that, amongst other potential modifications, proposed a reduction to the mercury emission limits for 
lignite coal-fired EGUs. This proposal is currently pending.

State Mercury and Air Toxics Regulations Affecting EGUs

In addition, certain states have their own mercury rules that are similar to or more stringent than the MATS Rule. Coal-fired 
electricity generating units in the U.S. are subject to consent decrees that require the control of acid gases and particulate matter, 
in addition to mercury emissions. 

U.S. Federal Industrial Boiler MACT

In  January  2013,  the  EPA  issued  the  final  set  of  adjustments  to  the  MACT-based  air  toxics  standards  for  industrial  boilers, 
including  mercury,  particulate  matter  and  acid  gas  emission  limits.  Existing  boilers  typically  had  until  January  31,  2017  to 
comply  with  the  rule.  The  EPA  published  an  amended  final  rule  of  the  industrial  boiler  MACT  ("IBMACT"),  representing 
technical  corrections  and  clarifications.  On  July  21,  2022,  the  EPA  issued  a  further  update  of    the  IBMACT,  which,  among 
other things, updated emission limits to certain HAPs.

The EPA estimated that approximately 600 coal-fired boilers will be affected by IBMACT, in industries such as pulp and paper. 
Our estimates, based on conversations with plant operators, suggest that most of the affected plants have either shut down or 
switched fuels to natural gas to comply with the regulation.

4

Effluent Limitation Guidelines

In 2015, the EPA set the first federal limits known as effluent limitation guidelines ("ELGs") on the levels of toxic metals in 
wastewater that can be discharged from power plants. The final rule requires, among other things, zero discharge for fly ash and 
bottom  ash  transport  water  and  limits  on  mercury,  arsenic,  selenium,  and  nitrate  from  flue  gas  desulfurization  ("FGD") 
wastewater. In September 2017, the EPA finalized a rule that delayed the original compliance deadlines for certain wastewater 
streams  from  November  2018  to  November  2020,  with  the  possibility  that  plants  would  not  need  to  comply  until  December 
2023 with state approval. In April 2019, the U.S. Court of Appeals for the Fifth Circuit struck down the EPA’s ELGs that apply 
to leachate wastewater and "legacy wastewater," and directed the EPA to revise the limits on the levels of toxic metals in those 
wastewater streams. In November 2019, the EPA proposed to revise the ELGs for bottom ash and FGD wastewater. The final 
rule,  published  in  the  Federal  Register  on  October  13,  2020  and  effective  on  December  14,  2020,  does  not  directly  regulate 
halogens.  It  does,  however,  propose  to  establish  a  voluntary  incentives  program  for  the  removal  of  certain  halides.  In  many 
(though  not  all)  of  the  proposed  treatment  options  that  the  EPA  is  considering,  selenium  in  FGD  wastewater  would  be 
regulated. Some halogens may impact the effectiveness of biological wastewater treatment systems that are often used for the 
removal  of  selenium.  On  August  3,  2021,  the  EPA  initiated  a  supplemental  rule-making  initiative  to  strengthen  certain 
discharge limits and stated its intention to issue a proposed rule for public comment in Fall of 2022, and issued a proposed rule 
on  ELGs  for  the  Steam  Electric  Power  Generating  Category  on  March  29,  2023.  This  proposed  rule  seeks  to  establish  more 
stringent discharge standards for certain wastewater generated at coal fired power plants, and is currently under review by the 
EPA.

Additional U.S. Legislation and Regulations

In  October  2021,  the  EPA  released  its  PFAS  Strategic  Roadmap,  laying  out  its  approach  to  addressing  PFAS  and  other 
pollutants. The PFAS Strategic Roadmap sets timelines by which the EPA plans to take certain actions through 2024, including 
establishing a national primary drinking water regulation for certain PFAS and taking Effluent Limitations Guidelines actions to 
regulate  certain  PFAS  discharges  from  industrial  categories.  On  March  14,  2023,  the  EPA  proposed  a  National  Primary 
Drinking  Water  Regulation  ("NPDWR")  for  six  specific  PFAS  substances.  NPDWR  seeks  to  establish  legally  enforceable 
maximum  contaminant  levels  ("MCL")  for  the  6  PFAS  substances,  including  a  proposed  MCL  for  Perfluorooctane  Acid 
("PFOA") and Perfluorooctane Sulfonate ("PFOS") of 4.0 parts per trillion. Under this proposed rule, drinking water utilities 
would have three years from the publication of a final rule to comply. The EPA has submitted its final rule with respect to the 
NPDWR for interagency review and should issue a final rule after this review is completed. 

International Regulations

There  are  various  international  regulations  related  to  mercury  control.  In  Canada,  the  Canada-Wide  Standard  ("CWS")  was 
initially  implemented  in  2010,  with  increasingly  stringent  limits  through  2020  and  varying  mercury  emissions  caps  for  each 
province. China and Germany both have limits for mercury emissions that are less stringent than U.S. limits and are typically 
met using co-benefits from other installed air pollution control equipment designed to control other pollutants. In May 2017, the 
EU ratified the Minimata Convention on Mercury, triggering mercury control regulations with implementation starting in 2021. 
Specific  emissions  limits  for  dust,  nitrogen  oxides  (NOx),  sulfur  dioxide  (SO2),  mercury  and  particulate  matter  (PM)  are 
currently being developed, guided by the best available technologies reference ("BREF") document for limiting stack emissions 
and  liquid  effluents  from  industrial  processes.  The  BREF  conclusions  for  large  coal-fired  electricity  generating  units  were 
adopted by the European Commission in July 2017.

In October 2022, the European Commission proposed new directives for better and more cost-effective treatment of urban 
wastewater, which included amongst other things new standards on micropollutants and new monitoring requirements for 
microplastics.  In January of 2024, there was a provisional agreement that revised the October 2022 proposed directives. If the 
revised directive is adopted by the European Parliament and the Council, it will become enforceable on European Union 
Member States. 

Based on the existing and potential regulations, we believe the international market for activated carbon products may expand 
in the coming years. 

5

Mining Environmental and Reclamation Matters

Federal, state and local authorities regulate the U.S. coal mining industry with respect to matters such as employee health and 
safety and the environment, including the protection of air quality, water quality, wetlands, special status species of plants and 
animals, land uses, cultural and historic properties and other environmental resources identified during the permitting process. 
Reclamation  is  required  during  production  and  after  mining  has  been  completed.  Materials  used  and  generated  by  mining 
operations must also be managed according to applicable regulations and law. 

The  Surface  Mining  Control  and  Reclamation  Act  of  1977  ("SMCRA"),  establishes  mining,  environmental  protection, 
reclamation and closure standards for all aspects of surface mining. Mining operators must obtain SMCRA permits and permit 
renewals from the Office of Surface Mining (the "OSM") or from the applicable state agency if the state agency has obtained 
regulatory primacy. A state agency may achieve primacy if the state regulatory agency develops a mining regulatory program 
that is no less stringent than the federal mining regulatory program under SMCRA. The Five Forks Mine operates in Louisiana, 
which has achieved primacy and issues permits in lieu of the OSM. 

Mine operators are often required by federal and/or state laws, including SMCRA, to assure, usually through the use of surety 
bonds,  payment  of  certain  long-term  obligations  including  mine  closure  or  reclamation  costs,  federal  and  state  workers’ 
compensation costs, coal leases and other miscellaneous obligations. Although surety bonds are usually non-cancelable during 
their term, many of these bonds are renewable on an annual basis and collateral requirements may change. As of December 31, 
2023, we posted a surety bonds of approximately $7.5 million and $3.0 million for reclamation of the Five Forks Mine and the 
Corbin Facility, respectively.

Intellectual Property

As of December 31, 2023, we held 83 U.S. patents and 8 international patents that were issued or allowed, 13 additional U.S. 
provisional patents or applications that were pending, and 2 international patent applications that were either pending or filed 
relating to different aspects of our technology. During the year ended December 31, 2023, we were granted 3 new patents, and 
obtained an additional 87 patents and patent applications through the Arq Acquisition. Within the Legacy Arq patent portfolio, 
there are 7 granted U.S. patents, 10 pending U.S. applications, 19 granted international patents, and 51 pending international 
patent applications. Our existing patents generally have terms of 20 years from the effective date of filing, with our next patents 
expiring in 2024.

During the year ended December 31, 2023, 7 U.S. and 6 international patents and applications from our patent portfolio were 
abandoned,  as  we  determined  that  they  no  longer  represent  future  markets  or  economic  opportunities  for  us.  Further,  22 
international  patents  and  applications  from  the  Legacy  Arq  patent  portfolio  were  abandoned  in  jurisdictions  that  were 
determined to no longer represent future markets or economic opportunities for us.

As  of  December  31,  2023,  we  owned  over  50  trademark  registrations  and  applications  globally.  During  the  year  ended 
December 31, 2023, we obtained an additional 33 trademarks from the Arq Acquisition.

Safety, Health and Environment

Our operations are subject to numerous federal, state, and local laws, regulations, rules and ordinances relating to safety, health, 
and environmental matters ("SH&E Regulations"). These SH&E Regulations include requirements to maintain and comply with 
various environmental permits related to the operation of many of our facilities, including mine health and safety laws required 
for continued operation of the Five Forks Mine.

Employees

As of December 31, 2023, we employed 173 personnel, of which 171 were employed full-time.

Arq Acquisition

On February 1, 2023 (the "Acquisition Date"), we entered into a Securities Purchase Agreement (the "Purchase Agreement") 
with  Arq  Limited  ("Arq  Ltd."),  a  company  incorporated  under  the  laws  of  Jersey,  pursuant  to  which  we  acquired  all  of  the 
direct and indirect equity interests of Arq Ltd.'s subsidiaries (the "Arq Acquisition," and hereafter referred to as "Legacy Arq") 
in exchange for consideration (the "Purchase Consideration") totaling $31.2 million and consisting of (i) 3,814,864 shares of the 
Company's common stock, par value $0.001 per share (the "Common Stock"), valued at $12.4 million and (ii) 5,294,462 shares 
of the Company's Series A Convertible Preferred Stock, par value $0.001 per share (the "Series A Preferred Stock"), valued at 

6

$18.8  million.  On  June  13,  2023,  our  stockholders  approved  the  conversion  of  all  of  the  outstanding  shares  of  the  Series  A 
Preferred Stock and the corresponding issuance of 5,362,926 shares of Common Stock.

On February 1, 2023, and pursuant to the Arq Acquisition, we entered into subscription agreements with certain persons (the 
"Subscribers"),  which  included  existing  shareholders  of  Arq  Ltd.,  three  of  which  were  appointed  to  our  board  of  directors,  
pursuant to which the Subscribers subscribed for and purchased 3,842,315 shares of Common Stock for an aggregate purchase 
price  of  approximately  $15.4  million  and  at  a  price  per  share  of  $4.00  (the  "PIPE  Investment").  The  securities  issued  to  the 
Subscribers under the Subscription Agreements were issued pursuant to an exemption from registration under Section 4(a)(2) of 
the Securities Act of 1933, as amended (the "Securities Act"), Rule 506 of Regulation D, which is promulgated thereunder, and 
Regulations S of the Securities Act. The Company and its affiliates relied on this exemption from registration based in part on 
representations made by each of the Subscribers under the Subscription Agreements.

Pursuant to the terms of the Purchase Agreement, we entered into a Registration Rights Agreement (the "Registration Rights 
Agreement") with Arq Ltd. and the Subscribers to the Subscription Agreements described above. On January 25, 2024, we filed 
a  registration  statement  on  Form  S-3/A  with  the  Securities  and  Exchange  Commission  ("SEC")  to  register  all  shares  of 
Common Stock issued in the Purchase Agreement, all shares of Common Stock issued in the PIPE Investments, and all shares 
of Common Stock issued from the conversion of all shares of the Series A Preferred Stock subject to the Registration Rights 
Agreement  and  325,457  underlying  shares  of  Common  Stock  issuable  upon  the  exercise  of  the  Warrant  (as  defined  below) 
issued as consideration in the CFG Loan (as defined below). The registration was declared effective by the SEC on January 31, 
2024.

Loan Agreement

On  February  1,  2023,  and  pursuant  to  the  Arq  Acquisition,  we,  as  borrower,  certain  of    subsidiaries,  as  guarantors,  and  CF 
Global Credit, as administrative agent and lender, entered into a $10.0 million term loan (the "CFG Loan") upon execution of a 
Term Loan and Security Agreement (the "Loan Agreement"). The CFG Loan has a term of 48 months and bears interest at a 
rate equal to either (a) Adjusted Term SOFR (subject to a 1.00% floor and a 2.00% cap) plus a margin of 9.00% paid in cash 
and 5.00% paid in kind or (b) Base Rate plus a margin of 8.00% paid in cash and 5.00% paid in kind, which interest on the CFG 
Loan in each case shall be payable (or capitalized, in the case of in kind interest) quarterly in arrears. In addition, in connection 
with the Loan Agreement and as consideration for the CFG Loan, we issued to CF Global a warrant (the "Warrant") to purchase 
325,457 shares of Common Stock. The Warrant has an exercise price of $0.01 per share, subject to adjustment as set forth in the 
Warrant, is exercisable immediately, contains a cashless exercise provision and expires on February 1, 2030. 

Available Information 

Our periodic and current reports are filed with the SEC pursuant to Section 13(a) of the Securities Exchange Act of 1934, as 
amended (the "Exchange Act") and are available free of charge within 24 hours after they are filed with, or furnished to, the 
SEC at the Company’s website at www.arq.com. The filings are also available through the SEC at the SEC's Public Reference 
Room  at  100  F  Street,  N.E.,  Washington,  D.C.  20549  or  by  calling  1-800-SEC-0330.  Alternatively,  these  reports  can  be 
accessed at the SEC’s website at www.sec.gov. The information contained on our website shall not be deemed incorporated by 
reference in any filing under the Securities Act of 1933, as amended (the "Securities Act") or the Exchange Act.

Forward-Looking Statements Found in this Report

This Report contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of 
the Exchange Act that involve risks and uncertainties. In particular statements about our beliefs, plans, objectives, expectations, 
assumptions, future events or future performance contained in this report, including certain statements found in this Part I and 
under the heading in Part II, Item 7 below, are forward-looking statements. In some cases, forward-looking statements can be 
identified by words or phrases  such as "anticipates," "believes," "expects," "intends," "plans," "estimates,", "may", "predicts," 
the negative expressions of such words, or similar expressions, and such forward-looking statements include, but are not limited 
to, statements or expectations regarding:

(a)

the anticipated effects from an increase in pricing of our AC products;

(b) the anticipated effects from an increase in costs of our AC products and related cost increases in supply and logistics;

(c) expected supply and demand for our AC products and services;

(d) increasing competition in the AC market;

7

(e)

the ability to successfully integrate Legacy Arq's business;

(f)

the ability to develop and utilize Legacy Arq’s products and technology;

(g) the ability to make Legacy Arq's products commercially viable;

(h) the expected future demand of Legacy Arq's products;

(i)

(j)

future level of research and development activities;

future plant capacity expansions and site development projects, including the GAC Facility;

(k) the effectiveness of our technologies and the benefits they provide;

(l) probability of any loss occurring with respect to certain guarantees made by Tinuum Group;

(m) the timing of awards of, and work and related testing under, our contracts and agreements and their value;

(n) the timing and amounts of or changes in future revenue, backlog, funding for our business and projects, margins, 

expenses, earnings, tax rates, cash flows, royalty payment obligations, working capital, liquidity and other financial 
and accounting measures;

(o) the amount of future capital expenditures needed to fund our business plan;

(p) awards of patents designed to protect our proprietary technologies both in the U.S. and other countries;

(q) the adoption and scope of regulations to control certain chemicals in drinking water and other environmental concerns;

(r)

the impact of adverse global macroeconomic conditions, including rising interest rates, recession fears and inflationary 
pressures, and geopolitical events or conflicts; 

(s) opportunities to effectively provide solutions to U.S. coal-related businesses to comply with regulations, improve 

efficiency, lower costs and maintain reliability;

(t)

the impact of prices of competing power generation sources such as natural gas and renewable energy on demand for 
our products; and

(u) bank failures or other events affecting financial institutions. 

Our expectations are based on certain assumptions, including without limitation, that: 

(a) coal will continue to be a significant source of fuel for electrical generation in the U.S.; 

(b) we will continue as a key supplier of consumables to the coal-fired power generation industry as it seeks to implement 

reduction of mercury emissions; 

(c) we will be able to obtain adequate capital and personnel resources to meet our operating needs and to fund anticipated 

growth and our indemnity obligations; 

(d) significant customers will continue to purchase consumables from us;

(e) we will be able to establish and retain key business relationships with current and other companies; 

(f) orders we anticipate receiving will be received;

(g) we will be able to formulate new consumables that will be useful to, and accepted by, the markets; 

(h) we will be able to effectively compete against others; 

(i) we will be able to meet any technical requirements of projects we undertake;  and

(j) existing environmental regulations such as MATS stay in place.

The  forward-looking  statements  included  in  this  Report  involve  risks  and  uncertainties.  Actual  events  or  results  could  differ 
materially from those discussed in the forward-looking statements as a result of various factors including, but not limited to, 
timing  of  new  and  pending  regulations  and  any  legal  challenges  to  or  extensions  of  compliance  dates  of  them;  the  U.S. 
government’s  failure  to  promulgate  regulations  that  benefit  our  business;  changes  in  laws  and  regulations,  accounting  rules, 
prices, economic conditions and market demand; impact of competition; availability, cost of and demand for alternative energy 

8

sources and other technologies; technical, start up and operational difficulties; competition within the industries in which the 
Company  operates;  our  inability  to  commercialize  our  APT  products  on  favorable  terms;  our  inability  to  effectively  and 
efficiently commercialize new products; changes in construction costs or availability of construction materials; our inability to 
effectively manage construction and startup of the Red River GAC Facility or Corbin Facility; our inability to obtain required 
financing or financing on terms that are favorable to us; our inability to ramp up our operations to effectively address recent and 
expected  growth  in  our  business;  loss  of  key  personnel;  ongoing  effects  of  the  inflation  and  macroeconomic  uncertainty, 
including from the ongoing pandemic and armed conflicts around the world, and such uncertainty's effect on market demand 
and input costs; availability of materials and equipment for our business; intellectual property infringement claims from third 
parties; pending litigation; as well as other factors relating to our business strategy, goals and expectations concerning the Arq 
Acquisition (including future operations, future performance or results); our ability to maintain relationships with customers, 
suppliers  and  others  with  whom  it  does  business  and  meet  supply  requirements,  or  its  results  of  operations  and  business 
generally; risks related to diverting management's attention from our ongoing business operations; the ability to meet Nasdaq's 
listing  standards  following  the  consummation  of  the  Transaction;  costs  related  to  the  Arq  Acquisition;  opportunities  for 
additional  sales  of  our  activated  carbon  products  and  end-market  diversification;  the  timing  and  scope  of  new  and  pending 
regulations  and  any  legal  challenges  to  or  extensions  of  compliance  dates  of  them;  our  ability  to  meet  customer  supply 
requirements; the rate of coal-fired power generation in the U.S., the timing and cost of capital expenditures and the resultant 
impact  to  our  liquidity  and  cash  flows  as  described  in  our  filings  with  the  SEC,  with  particular  emphasis  on  the  risk  factor 
disclosures contained in those filings. You are cautioned not to place undue reliance on the forward-looking statements made in 
this  Report  and  to  consult  filings  we  have  made  and  will  make  with  the  SEC  for  additional  discussion  concerning  risks  and 
uncertainties that may apply to our business and the ownership of our securities. The forward-looking statements contained in 
this Report are presented as of the date hereof, and we disclaim any duty to update such statements unless required by law to do 
so.

9

Item 1A. Risk Factors   

The following risks relate to us as of the date this Report is filed with the SEC. This list of risks is not intended to be 
exhaustive,  but  reflects  what  we  believe  are  the  material  risks  inherent  in  our  business  and  the  ownership  of  our 
securities as of the specified dates. A statement to the effect that the occurrence of a specified event may have a negative 
impact on our business, results of operations, profitability, financial condition, or the like, is intended to reflect the fact 
that  such  an  event,  if  it  occurs,  would  be  likely  to  have  a  negative  impact  on  your  investment  in  Arq,  but  should  not 
imply  the  likelihood  of  the  occurrence  of  such  specified  event.  The  order  in  which  the  following  risk  factors  are 
presented is not intended as an indication of the relative seriousness of any given risk. 

Risks Related to Our Business 

We may be unable to meet our projected construction timelines, costs and production ramp up for our capital upgrades at 
our Red River Plant, or we may experience difficulties in generating and maintaining demand for products manufactured 
there.

Our ability to increase production of GAC on a sustained basis is dependent on the construction and ramp of upgrades at our 
Red  River  Plant.  The  construction  of  and  commencement  and  ramp  of  production  at  this  facility  are  subject  to  a  number  of 
uncertainties  inherent  in  all  new  manufacturing  operations.  These  include  ongoing  liquidity  requirements  for  funding  the 
expansion  of  the  facility,  ongoing  compliance  with  regulatory  requirements,  procurement  and  maintenance  of  construction 
materials and services, environmental and operational licenses and approvals for additional expansion, supply chain constraints, 
hiring, training and retention of qualified employees and the pace of bringing production equipment and processes online with 
the capability to manufacture high-quality GAC products at scale. 

If we experience any issues or delays in meeting our projected timelines, costs, or production capacity for the upgrades at the 
Red  River  Plant,  or  generating  and  maintaining  demand  for  the  products  we  manufacture  there,  our  business,  prospects, 
operating  results  and  financial  condition  may  be  harmed.  The  Company  anticipates  financing  the  timely  completion  of  the 
upgrades  to  our  Red  River  Plant  funded  with  cash  on  hand,  cash  generation,  ongoing  cost  reduction  initiatives,  potential 
customer prepayments for GAC contracts, and a planned refinancing and potential expansion of our term loan. If we are not 
able to secure additional financing, the project timeline for our Red River Plant expansion may be delayed beyond the end of 
2024.

Our  future  financial  results  will  suffer  if  we  do  not  effectively  manage  our  expanded  operations  following  the  Arq 
Acquisition.

Following the Arq Acquisition, the size of our business has increased. Our future results depend, in part, upon our ability to 
manage  this  expanded  business,  which  poses  substantial  challenges  for  management,  including  challenges  related  to  the 
management and monitoring of new operations and associated increased costs and complexity. There can be no assurance that 
we will be successful or that we will realize the expected operating efficiencies, cost savings, revenue enhancements and other 
benefits currently anticipated from the Arq Acquisition. 

Manufacturing Legacy Arq's products and GAC products requires significant capital.

Legacy  Arq  was  a  development  stage  entity  that  to  date  has  not  generated  any  revenue.  Legacy  Arq  has  historically  had 
operating losses and required multiple financing rounds to fund its business plan. We are currently spending significant capital 
to  execute  our  business  plan  to  manufacture  Legacy  Arq’s  products  as  a  feedstock  for  GAC  products.  A  significant  funding 
source is our cash on hand. We are targeting the end of 2024 for our first commercial production of Legacy Arq products and 
the end of 2024 for our first commercial production of GAC products. To meet these production timing goals, we will need to 
raise additional capital in 2024. We may not be successful in obtaining the required financing or, if financing is available to us, 
such  financing  may  not  be  on  terms  that  are  favorable  to  us.  The  failure  to  obtain  financing  in  2024  in  order  to  enable  the 
Company  to  produce  Legacy  Arq  products  and  GAC  products  by  the  end  of  2024  could  result  in  a  delay  in  executing  our 
business plan.

The Arq Acquisition is requiring significant technological changes in manufacturing that may adversely affect the market 
acceptance of Legacy Arq’s products.

We will be producing new products that we have not yet sold commercially. As such, production to date has not been at full 
throughput. Legacy Arq’s manufacturing technology has been extensively tested at scale, but continuous operations represent 
risks including an inability to achieve the scale-up efficiencies that have been assumed in our business plan. In turn, this could 

10

impact throughput in the Corbin Facility, which could lead to lower production and higher operating costs. There is also risk of 
delays  that  are  product-specific.  For  example,  we  may  not  receive  adequate  customer  acceptance  or  achieve  acceptable 
performance  given  the  specification  differentiation  between  some  of  Legacy  Arq’s  products  and  the  industry’s  existing 
conventional  products.  These  risks  could  have  a  material  adverse  effect  on  our  business,  operating  results  and  financial 
condition.

There could be no future demand for Legacy Arq’s products.

Our initial use for Arq Powder is as a feedstock for AC, and although we believe current conditions are favorable as a result of 
excess demand versus supply, there can be no guarantee that this will continue. Drivers of demand include factors beyond our 
control  such  as  population  growth  and  GDP  growth,  amongst  others.  Any  major  global  downturn  could  also  materially 
negatively impact this demand. New AC supply is driven by new manufacturing sites being built, and we have little visibility 
on what additional manufacturing capacity other manufacturers may add in the future. 

Our business plan and commercial success also assumes selling Arq Powder into new markets, including as an additive into the 
carbon  black  and  asphalt  markets.  Although  testing  data  and  feedback  from  potential  customers  have  been  positive  to  date, 
there  can  be  no  assurance  that  these  products  will  be  commercially  viable.  As  we  attempt  to  develop  and  grow  Arq  Powder 
utilization worldwide, our success will depend on our ability to correctly forecast demand in these new markets. There is no 
assurance that we will be able to increase our business to meet targets globally, or that projections on which such targets are 
based will prove accurate, or that the pace of growth or coverage will meet customer expectations.

Disruptions at any of our facilities could negatively impact our ability to meet customer supply requirements due to damage 
to or insufficient production capacity of the Red River Plant and may have a material adverse effect on our business, results 
of operations and financial condition.

We own and operate the Red River Plant, which is our sole manufacturing plant for producing and selling AC products to our 
customers, and are completing construction and commissioning activities on the Corbin Facility. Our current and future ability 
to meet customer expectations, manage inventory, complete sales and achieve our objectives for operating efficiencies depends 
on  the  full-time  operation  of  the  Red  River  Plant,  and  the  execution  of  our  business  plan  depends  on  the  completion  of  the 
Corbin Facility and the GAC expansion at the Red River Plant. We cannot replicate our manufacturing methods at another plant 
due to the limited availability of similar manufacturing plants, the additional costs incurred in supplying raw materials such as 
lignite to another plant, and the risk of revealing our confidential and proprietary technologies and manufacturing processes.

If we experience a disruption at these facilities, due to natural disasters, extreme weather, other unanticipated problems such as 
labor  difficulties,  pandemics  (including  the  COVID-19  pandemic),  equipment  failure,  cyberattacks  or  other  cybersecurity 
incidents, capacity expansion difficulties or unscheduled maintenance, we would suffer a loss of inventory to supply customers, 
likely incur additional costs to deliver products to our customers, and disrupt the ordinary course of our business. In addition, if 
contractual demand exceeds manufacturing capacity, we would jeopardize our ability to fulfill obligations under our contracts, 
which  could,  in  turn,  result  in  reduced  sales,  profitability,  contract  penalties  or  terminations  and  damage  to  our  customer 
relationships and could have a material adverse effect on our business. While we have insured our facilities against damage or 
destruction  as  well  as  for  losses  from  business  interruptions,  there  can  be  no  assurance  that  any  insurance  coverage  will  be 
sufficient to cover any such losses.

Further,  a  prolonged  disruption  in  our  operations  at  the  Red  River  Plant  due  to  downtime  or  having  to  meet  customer 
requirements  that  exceed  our  maximum  manufacturing  capacity  would  require  us  to  seek  alternative  customer  supply 
arrangements, which may not be on attractive terms to us or could lead to delays in distribution of products to our customers, 
either of which could have a material adverse effect on our business, results of operations and financial condition.

There can be no assurance that the Arq Acquisition will result in additional value for our stockholders.

There  can  be  no  assurance  that  the  Arq  Acquisition  will  provide  greater  value  to  our  stockholders  than  that  reflected  in  the 
current price of our common stock. As a result of the Arq Acquisition, perceived uncertainties related to our future may result 
in the loss of potential business opportunities and volatility in the market price of our common stock, which may make it more 
difficult for us to attract and retain qualified personnel and business partners.

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In connection with the Arq Acquisition, we may be required to take write-downs or write-offs, restructuring and impairment 
or  other  charges  that  could  negatively  affect  our  business,  assets,  liabilities,  prospects,  outlook,  financial  condition  and 
results of operations.

Although  we  conducted  extensive  due  diligence  in  connection  with  the  Arq  Acquisition,  unexpected  risks  may  arise  and 
previously known risks may materialize in a manner not consistent with our preliminary risk analysis. Further, as a result of the 
Arq  Acquisition,  we  may  be  required  to  take  write-offs  or  write-downs,  restructuring  and  impairment  or  other  charges  that 
could negatively affect our business, assets, liabilities, prospects, outlook, financial condition and results of operations. 

The failure to successfully integrate the Legacy Arq businesses in the expected timeframe could adversely affect our future 
business and financial performance.

The combination of two independent companies is a complex, costly and time-consuming process. As a result, we have devoted 
significant  management  attention  and  resources  to  integrate  Legacy  Arq's  business  practices  and  operations.  We  may  not  be 
successful in integrating the operations of Legacy Arq or otherwise realizing the anticipated benefits of the Arq Acquisition. In 
addition,  the  integration  of  Legacy  Arq  may  result  in  material  unanticipated  problems,  expenses,  liabilities,  competitive 
responses, loss of customer relationships and diversion of management’s attention, and may cause our stock price to decline. 
The difficulties of combining the operations of the two companies include, among others:

• managing a larger company;

•

•

•

•

•

coordinating geographically separate organizations;

the potential diversion of management’s focus and resources from other strategic opportunities and from operational 
matters;

performance shortfalls at one or both of the companies as a result of the diversion of management’s attention caused 
by completing the Arq Acquisition and integrating the combined companies’ operations; 

aligning and executing a new business strategy;

retaining existing customers and attracting new customers;

• maintaining employee morale and retaining key management and other employees;

•

•

•

•

•

the  disruption  of,  or  the  loss  of  momentum  in,  each  company’s  ongoing  business  or  inconsistencies  in  standards, 
controls, systems, procedures and policies;

integrating two unique business cultures, which may prove to be incompatible;

the possibility of faulty assumptions underlying expectations regarding the integration process;

consolidating corporate and administrative infrastructures and eliminating duplicative operations;

coordinating sales, distribution and marketing efforts;

• maintaining research and development technology momentum and leading customer technical collaboration progress;

•

•

•

significant changes to current market conditions that may adversely affect the business plan;

integrating IT, communications and other systems;

changes in applicable laws and regulations;

• managing tax costs or inefficiencies associated with integrating Legacy Arq's operations;

•

•

unforeseen expenses or delays associated with the Arq Acquisition; and

taking actions that may be required in connection with obtaining regulatory approvals.

Many of these factors are outside of our control and any one of them could result in increased costs, decreased revenue and 
diversion  of  management’s  time  and  energy,  which  could  materially  impact  our  business,  financial  condition  and  results  of 
operations. In addition, even if the operations of Legacy Arq are integrated successfully, we may not realize the full benefits 
from the Arq Acquisition, including the synergies, cost savings or growth opportunities that we expect. These benefits may not 
be achieved within the anticipated timeframe, or at all. 

12

Specifically, the realization of the full benefits from the Arq Acquisition is dependent on our ability to construct expansions to 
existing facilities and to integrate Arq Powder on the projected timeline and within the projected budget. If these anticipated 
capital  expenditures  are  delayed,  whether  as  a  result  of  unanticipated  challenges  in  permitting,  construction  or  economic 
conditions, the cost of such activities may increase and the timing of projected revenue may be impacted. Further, the costs of 
such construction activities may significantly exceed the budgeted costs. The costs of construction or other anticipated capital 
expenditures are subject to the effects of the current inflationary environment and we may not be able to successfully offset the 
effects of inflation. 

The synergies attributable to the Arq Acquisition may vary from expectations.

We may fail to realize the anticipated benefits and synergies expected from the Arq Acquisition. Our success will depend, in 
significant part, on our ability to successfully integrate the Legacy Arq business and realize the anticipated strategic benefits 
and synergies. We believe that the combination of the two businesses will allow us to enter into more diversified, higher margin 
markets  with  our  products.  However,  achieving  these  goals  requires,  among  other  things,  realization  of  the  targeted  cost 
synergies  expected  from  the  Arq  Acquisition.  These  anticipated  benefits  and  actual  operating,  technological,  strategic  and 
revenue  opportunities  may  not  be  realized  fully  or  at  all,  or  may  take  longer  to  realize  than  expected.  If  we  are  not  able  to 
achieve  these  objectives  and  realize  the  anticipated  benefits  and  synergies  expected  from  the  Arq  Acquisition  within  the 
anticipated timeframe or at all, our business, financial condition and operating results may be adversely impacted.

Strategic  relationships  upon  which  we  rely  on  are  subject  to  change,  which  may  diminish  our  ability  to  conduct  our 
operations.

Our ability to successfully produce Legacy Arq’s products and expand their utilization as intended depends on developing and 
maintaining close working relationships with industry participants. In addition, the dynamics of maintaining these relationships 
with strategic partners may require us to incur expenses or undertake activities we would not otherwise be inclined to do. If 
these strategic relationships are not established or maintained, our business prospects may be limited, which could negatively 
impact our business and results of operations.

If we fail to develop or maintain an effective system of internal controls as we integrate Legacy Arq’s business operations 
and  processes  with  ours,  we  may  not  be  able  to  accurately  report  our  financial  results  or  prevent  fraud.  As  a  result, 
stockholders could lose confidence in our financial reporting, which would harm our business and the trading price of our 
common stock.

Effective internal controls are necessary for us to provide reliable financial reports, prevent fraud and operate successfully as a 
public company. If we cannot provide reliable financial reports or prevent fraud, our reputation and operating results would be 
harmed.  We  cannot  be  certain  that  our  efforts  to  develop  and  maintain  an  effective  system  of  internal  controls  will  be 
successful, will be able to maintain adequate controls over our financial processes and reporting in the future, or will be able to 
comply with our obligations under Section 404 of the Sarbanes-Oxley Act of 2002. Any failure to develop or maintain effective 
internal controls, or difficulties encountered in implementing or improving internal controls, could harm our operating results or 
cause  us  to  fail  to  meet  our  reporting  obligations.  Ineffective  internal  controls  could  additionally  lead  to  increased  costs  to 
remediate any failures and could cause investors to lose confidence in our reported financial information, which would likely 
have a negative effect on the trading price of our common stock.

The  financial  effects  of  Tinuum  Group  providing  indemnification  under  performance  guarantees  of  its  RC  facilities  are 
largely unknown and could adversely affect our financial condition. 

Tinuum Group, LCC ("Tinuum Group"), of which we hold a 42.5% ownership interest,  indemnifies certain utilities and lessees 
of  RC  facilities  for  particular  risks  associated  with  the  operations  and  tax  treatment  of  those  facilities.  We  have  provided 
limited, joint and several guarantees of Tinuum Group’s obligations under those leases. To date, we have not been required to 
make any payments under such guarantees and are not aware of any actual or threatened requests or claims for payment under 
such guarantees.  Nevertheless, if any such obligations are triggered in the future, any substantial payments made under such 
guarantees could have a material adverse effect on our financial condition, results of operations and cash flows. 

A pandemic, epidemic or outbreak of an infectious disease such as COVID-19 may materially adversely affect our business.

The  global  or  national  outbreak  of  an  infectious  disease,  such  as  COVID-19,  may  cause  disruptions  to  our  business  and 
operational  plans,  which  may  include  (i)  shortages  of  employees,  (ii)  inefficiencies,  delays  and  additional  costs  in  our 
manufacturing, sales and customer service efforts, (iii) recommendations of, or restrictions imposed by, government and health 
authorities, including quarantines, to address an infectious disease, such as the COVID-19 pandemic, and (iv) restrictions that 

13

we impose, including facility shutdowns, to ensure the safety of employees and others. The COVID-19 pandemic has had, and 
continues  to  have,  a  significant  impact  around  the  world,  prompting  governments  and  businesses  to  take  unprecedented 
measures in response. While it is not possible to predict their extent or duration, these disruptions may have a material adverse 
effect on our business, financial condition and results of operations.

Demand  for  our  products  and  services  depends  significantly  on  environmental  laws  and  regulations  related  to  emissions. 
Uncertainty as to the future of such laws and regulations, changes to such laws and regulations or granting of extensions of 
compliance deadlines has had, and will likely continue to have, a material effect on our business.

A  significant  market  driver  for  our  existing  products  and  services  and  those  planned  in  the  future  are  existing  and  expected 
environmental laws and regulations, particularly those addressing the reduction of mercury and other emissions from coal-fired 
electricity generating units and proposed regulation of PFAS and other pollutants. If such laws and regulations are delayed, or 
are  not  enacted  or  are  repealed  or  amended  to  be  less  strict,  or  include  prolonged  phase-in  periods,  or  are  not  enforced,  our 
business would be adversely affected by declining demand for such products and services. For example:

1. The  implementation  of  environmental  regulations  regarding  certain  pollution  control  and  permitting 
requirements has been delayed from time to time due to various lawsuits. The uncertainty created by litigation 
and  reconsideration  of  rule-making  by  the  EPA  has  negatively  impacted  our  business,  results  of  operations 
and financial condition and will likely continue to do so. 

2. To the extent federal, state and local legislation mandating that electric power generating companies serving a 
state  or  region  purchase  a  minimum  amount  of  power  from  renewable  energy  sources  such  as  wind, 
hydroelectric,  solar  and  geothermal,  and  such  amount  lessens  demand  for  electricity  from  coal-fired  plants, 
the demand for our products and services would likely decrease. 

Federal,  state  and  international  laws  or  regulations  addressing  emissions  from  coal-fired  electricity  generating  units,  climate 
change or other actions to limit emissions, including public opposition to new coal-fired electricity generating units, has caused 
and could continue to cause electricity generators to transition from coal to other fuel and power sources, such as natural gas, 
nuclear, wind, hydroelectric and solar. The potential financial impact on us of future laws or regulations or public pressure will 
depend  upon  the  degree  to  which  electricity  generators  diminish  their  reliance  on  coal  as  a  fuel  source.  That,  in  turn,  will 
depend on a number of factors, including the specific requirements imposed by any such laws or regulations, the periods over 
which those laws or regulations are or will be phased in, the amount of public opposition and the state and cost of commercial 
development  of  related  technologies  and  processes.  In  addition,  public  utility  commissions  may  not  allow  utilities  to  charge 
consumers for, and pass on the cost of, emissions control technologies without federal or state mandates. 

Our  development  operations  at  the  Corbin  Facility  are  subject  to  environmental  permitting  and  regulations  that  can  make 
operations expensive, or prohibit them altogether. We use coal waste as a feedstock to produce Arq Powder, and the majority of 
coal  waste  sites  targeted  by  us  for  development  contain  potential  environmental  liabilities.  Therefore,  we  may  be  subject  to 
potential risks and liabilities associated with pollution of the environment and the disposal of waste products that could occur as 
a result of these development and production activities. Further, we cannot reasonably predict the impact that any such future 
laws or regulations or public opposition may have on our results of operations, financial condition or cash flows.

With the Arq Acquisition, we are subject to additional significant governmental regulations, which may negatively impact 
our operations and costs of conducting business.

The Corbin Facility's operations are governed by extensive laws and regulations, including:

•

•

•

laws and regulations related to exports, taxes and fees;

labor standards and regulations related to the MSHA; and

environmental  standards  and  regulations  related  to  waste  disposal,  toxic  substances,  land  use  and  environmental 
protection, including environmental protection regulations related to water and air.

Existing and possible future laws, regulations and permits governing operations and activities of energy waste companies, or 
more  stringent  implementation,  could  have  a  material  adverse  impact  on  our  business  and  cause  increases  in  capital 
expenditures  or  require  abandonment  or  delays  in  our  products.  Any  future  regulations  regarding  CO2  emissions  of  coal 
reclamation and product manufacturing could also impact our future business.

14

Action by the EPA related to Mercury and Air Toxics Standards ("MATS") that decreases demand for our mercury removal 
products could have a material adverse effect on our business.

Our operating performance is largely dependent upon demand for mercury removal-related product, which is largely affected 
by the amount of coal-based power generation used in the U.S. and the continued regulation of utilities under MATS. In May 
2020,  the  EPA  reconsidered  and  withdrew  its  2016  "supplemental  finding"  associated  with  the  cost  benefit  analysis  of  the 
MATS  Rule.  In  this  action,  the  EPA  found  that  it  was  not  "appropriate  and  necessary"  to  regulate  Hazardous  Air  Pollutants 
("HAP")  emissions  from  coal-  and  oil-fired  Electric  Utility  Steam  Generating  Units  ("EGUs").  However,  the  EPA  expressly 
stated  that  the  reconsideration  neither  removed  coal-  and  oil-fired  EGUs  from  the  list  of  sources  that  must  comply  with  the 
MATS  rule,  nor  rescinded  the  MATS  Rule,  which  has  remained  continuously  in  effect.  On  February  9,  2022,  the  EPA 
published  a  new  proposed  rule  revoking  the  May  2020  withdrawal  of  the  2016  supplemental  finding  and  affirming  that  it  is 
"appropriate and necessary" to regulate HAP emissions from coal- and oil-fired EGUs. On February 15, 2023, the EPA issued a 
final rule revoking the May 2020 reconsideration and affirming that it is "appropriate and necessary" to regulate HAP emissions 
from  coal-  and  oil-fired  EGUs.  On  April  3,  2023,  the  EPA  issued  a  proposed  update  to  MATS  that  amongst  other  potential 
modifications, proposed a reduction to the mercury emission limits for lignite coal-fired EGUs. Any final action taken by the 
EPA related to MATS that decreases demand for our products for mercury removal will have a negative effect on our financial 
results. The timing and content of the proposed updates to the rule are unknown.

The  failure  of  tariffs  placed  on  U.S.  imports  of  Chinese  AC  to  adequately  address  the  impact  of  low-priced  imports  from 
China could have a material adverse effect on the competitiveness and financial performance of our business.

Our business faces competition in the U.S. from low-priced imports of AC products. If the volumes of these low-priced imports 
increase, especially if they are sold at less than fair value, our sales of competing products could decline, which could have an 
adverse  effect  our  earnings.  In  addition,  sales  of  these  low-priced  imports  may  negatively  impact  our  pricing.  To  limit  these 
activities,  regulators  in  the  U.S.  have  enacted  an  anti-dumping  duty  order  on  steam  AC  products  from  China.  In  November 
2023, the order was extended for an additional five years. The amount of anti-dumping duties collected on imports of steam AC 
from  China  is  reviewed  annually  by  the  U.S.  Department  of  Commerce.  To  the  extent  the  anti-dumping  margins  do  not 
adequately address the degree to which imports are unfairly traded, the anti-dumping order may be less effective in reducing the 
volume of these low-priced AC imports in the U.S., which could negatively affect demand and/or pricing for our products.

The  market  for  consumables  and  other  products  that  provide  pollutant  reduction  is  highly  competitive,  and  some  of  our 
competitors  are  significantly  larger  and  more  established  than  we  are,  which  could  adversely  impede  our  growth 
opportunities and financial results.

We  operate  in  a  highly  competitive  marketplace.  Our  ability  to  compete  successfully  depends  in  part  upon  our  ability  to 
maintain  a  production  cost  advantage,  competitive  technological  capabilities  and  to  continue  to  identify,  develop  and 
commercialize  new  and  innovative  products  for  existing  and  future  customers.  We  may  face  increased  competition  from 
existing  or  newly  developed  products  offered  by  industry  competitors  or  other  companies  whose  products  offer  a  similar 
functionality as our products and could be substituted for our products, which may negatively affect demand for our products. 
In addition, market competition could negatively impact our ability to maintain or raise prices or maintain or grow our market 
position.  Additionally,  our  competitors  are  significantly  larger  and/or  more  established  companies  in  the  market  for 
consumables and other products that provide mercury emissions reduction, water treatment and air purification.

Reduction of coal consumption by North American electricity power generators could result in less demand for our products 
and  services.  If  utilities  significantly  reduce  the  number  of  coal-fired  electricity  generating  units  or  the  amount  of  coal 
burned without a corresponding increase in the services required at the remaining units, this could reduce our revenue and 
materially and adversely affect our business, financial condition and results of operations.

The  amount  of  coal  consumed  for  North  American  electricity  power  generation  is  affected  by,  among  other  things,  (1)  the 
location, availability, quality and price of alternative energy sources for power generation, such as natural gas, fuel oil, nuclear, 
hydroelectric,  wind,  biomass  and  solar  power;  and  (2)  technological  developments,  including  those  related  to  competing 
alternative energy sources.

Natural  gas-fueled  generation  and  renewable  energy  generation  have  displaced  and  may  continue  to  displace  coal-fueled 
generation,  particularly  from  older,  less  efficient  coal-powered  generators.  We  expect  that  a  significant  amount  of  the  new 
power generation necessary to meet increasing demand for electricity generation will be fueled by these sources. The price of 
natural gas has remained relatively competitive for power generation and the use of natural gas is perceived as having a lower 
environmental impact than burning coal. Natural gas-fired plants are cheaper to construct, and permits to construct these plants 

15

are easier to obtain, and ongoing costs of natural gas-fired plants associated with meeting environmental compliance are lower. 
Possible advances in technologies and incentives, such as tax credits that enhance the economics of renewable energy sources, 
could make those sources more competitive than coal. Any reduction in the amount of coal consumed by domestic electricity 
power generators, whether as a result of new power plants utilizing alternative energy sources or as a result of technological 
advances,  could  reduce  the  demand  for  our  current  products  and  services,  thereby  reducing  our  revenue  and  materially  and 
adversely affecting our business and results of operations.

Additionally, long-term changes in environmental regulation that threaten or preclude the use of coal or other fossil fuels as a 
primary fuel source for electricity production may result in the reduction or closure of a significant number of coal-fired electric 
generating units, and may adversely affect our business, financial condition and results of operations.

The loss of, or significant reduction in, revenue from our largest customers could adversely affect our business, financial 
condition or results of operations.

For  2023,  we  derived  approximately  48%  of  our  total  consumable  revenue  from  our  five  largest  customers.  Our  top  three 
customers  accounted  for  approximately  37%  of  our  total  consumable  revenue  for  2023.  If  any  of  our  five  largest  customers 
were to significantly reduce the quantities of consumables they purchase from us, it may adversely affect our business, financial 
condition and results of operations.

Uncertain geopolitical conditions could adversely affect our business.

Uncertain geopolitical conditions, including the conflicts in the Middle East, the invasion of Ukraine, sanctions against Russia 
and other potential impacts on the world economy and currencies may cause disruptions in our business. These include logistics 
delays or shortages in producing and shipping certain of our raw materials, increases in energy prices that could increase costs 
of certain of our raw materials, increases in transportation costs from overall higher gasoline prices and cyber-attacks targeted at 
U.S. power infrastructure that could impact demand for our products. 

Disruptions of supply chains may affect volatility in price and availability of raw materials.

The  continuation  of  geopolitical  conflicts  in  2023  has  continued  to  disrupt  supply  chains,  resulting  in  cost  increases  for 
commodities, goods and services in many parts of the world. Disruptions of supply chains and higher costs may continue into 
2024 and beyond. The economic effects from these events over longer terms could negatively impact our business and results of 
operations.

The  manufacturing  and  processing  of  our  consumable  products  requires  significant  amounts  of  raw  materials.  The  price  and 
availability  of  those  raw  materials  can  be  impacted  by  factors  beyond  our  control.  Our  consumable  products,  exclusive  of 
lignite coal, use a variety of additives. Significant movements or volatility in the costs of additives could have an adverse effect 
on our working capital or results of operations. Additionally, we purchase certain raw materials from selected key suppliers. 
While we have inventory of such raw materials, if any of these suppliers are unable to meet their obligations with us on a timely 
basis or at an acceptable price, we may be forced to incur higher costs to obtain the necessary raw materials or be unable to 
obtain the materials.

We may attempt to offset the increase in raw material costs or challenges in the supply of raw materials with price increases 
allowed in our contractual relationships, or through cost reduction efforts. If we are unable to fully offset the increased cost of 
raw materials through price increases, it could significantly impact our business, financial condition and results of operations. 

We may experience a shortage of reliable and adequate transport capacity and any material increase in transportation costs 
could have a material adverse effect on our results of operations.

We currently plan to transport our Arq Powder based filter cake produced at the Corbin Facility ("Wet Cake") to the Red River 
Plant by rail and truck. We may experience roadway or railway transportation disruptions that could have a material adverse 
effect  on  our  operations  or  financial  condition.  There  can  be  no  assurance  that  we  will  be  able  to  secure  sufficient  truck  or 
railway transport capacity to transport raw materials from the Corbin Facility to the Red River Plant. Further, in the event of 
railway  transport  shortages,  there  can  be  no  assurance  that  road  transportation  will  be  able  to  satisfy  the  shortfall.  Potential 
transportation classifications of raw materials may require permitting, and special care and handling to transport such materials. 
In  addition,  any  material  increase  in  transportation  costs  could  have  a  negative  effect  on  the  competitiveness  of  our  future 
products, which may in turn have a material adverse effect on our business and results of operations.

16

We  face  operational  risks  inherent  in  mining  operations,  and  our  mining  operations  have  the  potential  to  cause  safety 
issues, including those that could result in significant personal injury.

We  own  the  Five  Forks  Mine,  a  lignite  coal  mine  located  in  Louisiana,  which  is  operated  for  us  by  a  third  party.  Mining 
operations by their nature involve a high level of uncertainty and are often affected by risks and hazards outside of our control. 
At the Five Forks Mine, the risks are primarily operational risks associated with the maintenance and operation of the heavy 
equipment required to dig and haul the lignite and risks relating to producing lower than expected lignite quality or recovery 
rates. Additionally, the cost of inputs in our mining operation, most notably fuel cost, can create operational risks. The failure to 
adequately manage these risks could result in significant personal injury, loss of life, damage to mineral properties, production 
facilities or mining equipment, damage to the environment, delays in or reduced production and potential legal liabilities.

Our operations and products are subject to extensive safety, health and environmental requirements that could increase our 
costs and/or impair our ability to manufacture and sell certain products.

Our ongoing operations are subject to extensive federal, state and local laws, regulations, rules and ordinances relating to safety, 
health and environmental matters, many of which provide for substantial monetary fines and potential criminal sanctions for 
violations. These include requirements to obtain and comply with various environmental-related permits for constructing any 
new  facilities  (or  modifications  to  existing  facilities)  and  operating  all  of  our  existing  facilities.  Costs  of  complying  with 
regulations could increase, as concerns related to greenhouse gases and climate change continue to emerge. 

The enactment of new environmental laws and regulations and/or the more aggressive interpretation of existing requirements 
could require us to incur significant costs for compliance or capital improvements or limit our current or planned operations, 
any of which could have a material adverse effect on our earnings or cash flow. We may attempt to offset the effects of these 
compliance costs through price increases, productivity improvements and cost reduction efforts. Our success in offsetting any 
such  increased  regulatory  costs  is  largely  influenced  by  competitive  and  economic  conditions  and  could  vary  significantly 
depending  on  the  market  segment  served.  Such  increases  may  not  be  accepted  by  our  customers,  may  not  be  sufficient  to 
compensate for increased regulatory costs or may decrease demand for our products and our volume of sales. 

We may not be successful in achieving our growth expectations related to new products in our existing or new markets.

Our ability to bring new products to the market will depend on various factors, including, but not limited to, solving potential 
technical or manufacturing difficulties, competition and market acceptance, which may hinder the timeliness and cost to bring 
such products to production. Further, there can be no assurance that costs incurred to develop new products will result in an 
increase in revenue. These factors or delays could affect our future operating results.

Natural disasters or extreme weather could affect our operations and financial results.

We  operate  facilities,  including  the  Red  River  Plant,  Five  Forks  Mine  and  the  Corbin  Facility,  that  are  exposed  to  natural 
hazards,  such  as  floods,  windstorms  and  hurricanes.  Extreme  weather  events  present  physical  risks  that  may  become  more 
frequent  as  a  result  of  factors  related  to  climate  change.  Such  events  could  disrupt  our  supply  of  raw  materials  or  otherwise 
affect production, transportation and delivery of our products or affect demand for our products.

In  addition,  extreme  and  unusually  cold  or  hot  temperatures  throughout  the  U.S.  could  result  in  abnormally  high  loads  on 
geographic electrical grids that could result in the failure of coal-fired power plants to produce electricity. If these plants were 
off-line  for  a  significant  period  of  time,  the  demand  for  our  products  could  be  less,  which  would  impact  our  operations  and 
financial results. Conversely, abnormally high loads on geographic electrical grids, resulting in increased demand of coal-fired 
power plants to produce electricity, could impact our ability to meet customer contracts and demands.

Failure to effectively monitor and respond to environmental, social or governance (“ESG”) matters, including our ability to 
set and meet reasonable goals related to climate change and sustainability efforts, may negatively affect our business and 
operations. 

Regulatory  developments  and  stakeholder  expectations  relating  to  ESG  matters  are  rapidly  changing.  Concern  over  climate 
change has increased focus on the sustainability of practices and products in the markets we serve, and changes to laws and 
regulations  regarding  climate  change  mitigation  may  result  in  increased  costs  and  disruption  to  operations.  Moreover,  the 
standards by which ESG matters are measured are developing and evolving, and certain areas are subject to assumptions that 
could  change  over  time.  If  we  are  unable  to  recognize  and  respond  to  such  developments,  or  if  our  existing  practices  and 
procedures  are  not  adequate  to  meet  new  regulatory  requirements,  we  may  miss  corporate  opportunities,  become  subject  to 
regulatory scrutiny or third-party claims, or incur costs to revise operations to meet new standards.

17

In 2024, we plan to publish our first corporate responsibility and sustainability tear sheet to address the impact of our operations 
on  climate  change  and  discuss  material  social,  governance  and  environmental  issues  and  our  goals  related  to  the  same.  Any 
failure or perceived failure to achieve our sustainability goals or to act responsibly with respect to such matters may negatively 
impact our operations and/or financial condition. While we monitor a broad range of ESG issues, there can be no assurance that 
we will manage such issues successfully, or that we will successfully meet the expectations of our stakeholders, consumers and 
employees.

Information  technology  vulnerabilities  and  cyberattacks  on  our  networks  could  have  a  material  adverse  impact  on  our 
business.

We rely on information technology ("IT") to manage and conduct business, both internally and externally, with our customers, 
suppliers  and  other  third  parties.  Internet  transactions  involve  the  transmission  and  storage  of  data  including  customer  and 
supplier  business  information.  Therefore,  maintaining  the  security  of  computers  and  other  electronic  devices,  computer 
networks and data storage resources is a critical issue for us and our customers and suppliers because security breaches could 
result in reduced or lost ability to carry on our business and loss of, and/or unauthorized access to, confidential information. 

We  have  limited  personnel  and  other  resources  to  address  information  technology  reliability  and  security  of  our  computer 
networks,  and  to  respond  to  known  security  incidents  to  minimize  potential  adverse  impact.  Experienced  hackers, 
cybercriminals and perpetrators of threats may be able to penetrate our network security and misappropriate or compromise our 
confidential  information  or  that  of  third  parties,  create  system  disruptions  or  cause  shutdowns.  These  perpetrators  of 
cyberattacks  also  may  be  able  to  develop  and  deploy  viruses,  worms,  malware  and  other  malicious  software  programs  that 
attack our information and networks or otherwise exploit any security vulnerabilities of our information and networks. 

Techniques used to obtain unauthorized access to or sabotage systems change frequently and often are not recognized until after 
they are launched against a target, and we may be unable to anticipate these techniques or to implement adequate preventative 
measures. A breach of our IT systems and security measures or those of our third party partners as a result of third party action, 
malware,  employee  error,  malfeasance  or  otherwise  could  materially  adversely  impact  our  business  and  results  of  operations 
and expose us to customer, supplier and other third party liabilities.

Risks Related to Intellectual Property

Failure  to  protect  our  intellectual  property  or  infringement  of  our  intellectual  property  by  a  third  party  could  have  an 
adverse impact on our financial condition.

We  rely  on  a  combination  of  patent,  copyright  and  trademark  laws,  trade  secrets,  confidentiality  procedures  and  contractual 
provisions to protect our proprietary rights. Such means of protecting our proprietary rights may not be adequate because they 
provide only limited protection or such protection may be prohibitively expensive to enforce. We also enter into confidentiality 
and non-disclosure agreements with our employees, consultants and many of our customers and vendors, and generally control 
access to and distribution of our proprietary information. Notwithstanding these measures, a third party could copy or otherwise 
obtain  and  use  our  proprietary  information  without  authorization.  We  cannot  provide  assurance  that  the  steps  we  have  taken 
will  prevent  misappropriation  of  our  technology  and  intellectual  property,  which  could  negatively  impact  our  business  and 
financial  condition.  In  addition,  such  actions  taken  by  third  parties  could  divert  the  attention  of  our  management  from  the 
operation of our business.

We may be subject to intellectual property infringement claims from third parties that are costly to defend and that may limit 
our ability to use the disputed technologies.

If our technologies are alleged to infringe the intellectual property rights of others, we may be forced to mount a defense to such 
claims, which may be expensive and time consuming. During the pendency of litigation, we could be prevented from marketing 
and  selling  existing  products  or  services  and  from  pursuing  research,  development  or  commercialization  of  new  or 
complimentary  products  or  services.  Further,  we  may  be  required  to  obtain  licenses  to  third  party  intellectual  property  or  be 
forced to develop or obtain alternative technologies. Our failure to obtain a license to a technology that we may require, or the 
need to develop or obtain alternative technologies, could significantly and negatively affect our business.

Indemnification  of  third-party  licensees  of  our  technologies  against  intellectual  property  infringement  claims  concerning 
our licensed technology and our products could be financially significant to us.

We have agreed to indemnify licensees of our technologies (including Tinuum Group) and purchasers of our products, and we 
may enter into additional agreements with others under which we agree to indemnify and hold them harmless from losses they 

18

may  incur  as  a  result  of  the  alleged  infringement  of  third-party  rights  caused  by  the  use  of  our  technologies  and  products. 
Infringement  claims,  which  may  be  expensive  and  time-consuming  to  defend,  could  have  a  material  adverse  effect  on  our 
business,  operating  results  and  financial  condition,  even  if  we  are  successful  in  defending  ourselves  (and  the  indemnified 
parties) against them.

Our future success depends in part on our ongoing identification and development of intellectual property and our ability to 
invest in and deploy new products, services and technologies into the marketplace efficiently and cost effectively.  

The  process  of  identifying  customer  needs  and  developing  and  enhancing  products,  services  and  solutions  for  our  customer 
markets is complex, costly and uncertain. Any failure by us to identify and anticipate changing needs, emerging trends and new 
regulations could significantly harm our future market share and results of operations.  

Risk related to tax matters

Our ability to utilize our tax assets to offset future income tax liability could be limited from an "ownership change." 

In  general,  under  IRC  Sections  382  and  383  of  the  Internal  Revenue  Code  of  1986,  as  amended,  ("IRC')  a  corporation  that 
undergoes an "ownership change" is subject to limitations on its ability to utilize its pre-change net operating losses ("NOLs") 
and  tax  credits  to  offset  future  taxable  income.  In  general,  an  ownership  change  occurs  if  the  aggregate  stock  ownership  of 
certain stockholders (generally 5% stockholders (as defined in IRC Section 382), applying certain look-through rules)  increases 
by more than 50 percentage points during the testing period (generally a three-year lookback period). An entity that experiences 
an  ownership  change  generally  is  subject  to  an  annual  limitation  on  its  pre-ownership  change  tax  asset  carryforwards.  The 
annual limitation is increased each year to the extent that there is an unused limitation in a prior year. 

We acquired certain tax assets (the "Legacy Arq Tax Assets") in the Arq Acquisition, totaling approximately $12.5 million. The 
Legacy Arq Tax Assets are comprised of NOL carryforwards, of which $8.8 million were incurred in the U.S. Further, as of 
December 31, 2023, we had approximately $86.1 million of general business credit carryforwards (the "Tax Credits"), totaling 
approximately 77% of consolidated tax assets. Under the IRC and regulations promulgated by the U.S. Treasury Department 
and  the  IRS,  we  may  carry  forward  or  otherwise  utilize  our  NOLs  and  Tax  Credits  (collectively,  "Tax    Assets")  in  certain 
circumstances  to  offset  current  and  future  federal  income  tax  liabilities,  subject  to  certain  requirements  and  restrictions. 
However, our ability to use our Tax Assets to offset future federal income tax liability is limited if Legacy Arq or Arq, or both, 
experience an "ownership change" as discussed above. To the extent that the Tax Assets do not otherwise become limited, we 
believe that we will have available a significant amount of Tax Assets in future years, and therefore the Tax Assets could be a 
substantial asset to us.

In connection with the Arq Acquisition and PIPE Investment, we issued additional shares of our common stock. We performed 
an IRC Section 382 analysis as of the Acquisition Date and determined that we had not experienced an "ownership change" as 
of that date. If we were to experience an "ownership change," it is possible that a significant portion of our Tax Assets could 
expire before we would be able to use them to offset future federal income tax liability. 

Prior to the Acquisition Date, Legacy Arq completed numerous equity offerings that resulted in ownership changes. We have 
not  completed  a  formal  IRC  Section  382  analysis  of  Legacy  Arq  equity  changes  from  its  inception  through  the  Acquisition 
Date, however, we believe that one or more "ownership changes" occurred during this time period as defined under Sections 
382 and 383 and that a portion or all the Legacy Arq Tax Assets may subject to an annual limitation.

To mitigate the risk of an "ownership change," on May 5, 2017, our board of directors (the "Board") approved the Tax Asset 
Protection  Plan  (the  "TAPP")  and  declared  a  dividend  of  one  preferred  share  purchase  right  (each,  a  "Right")  for  each 
outstanding  share  of  our  common  stock.  The  TAPP  was  adopted  in  an  effort  to  protect  stockholder  value  by  attempting  to 
diminish the risk that our ability to use the ADES Tax Credits to reduce potential future federal income tax obligations may 
become substantially limited (the "Protection Plan"). During the years 2018-2023, we executed amendments to the TAPP (the 
"TAPP Amendments"), which amended the definition of "Final Expiration Date" under the TAPP to extend the duration of the 
TAPP and makes associated changes in connection therewith. The most recent TAPP Amendment was approved at our 2023 
annual meeting of stockholders and extended the Final Expiration Date to the close of business on December 31, 2024.

The TAPP, as amended, is intended to act as a deterrent to any person acquiring beneficial ownership of 4.99% or more of our 
outstanding  common  stock  without  the  approval  of  the  Board.  Stockholders  who  beneficially  owned  4.99%  or  more  of  our 
outstanding  common  stock  upon  execution  of  the  Protection  Plan  will  not  trigger  the  Protection  Plan  so  long  as  they  do  not 
acquire beneficial ownership of additional shares of our common stock. The Board may, in its sole discretion, also exempt any 
person from triggering the Protection Plan.

19

In connection with the Arq Acquisition and PIPE Investment, we granted a waiver under the TAPP for certain shareholders to 
acquire  more  shares  of  our  stock  in  the  future,  provided  that  such  acquisition  is  not  expected  to,  and  does  not,  effect  an 
"ownership  change"  under  IRC  Sections  382  and  383.  Despite  the  TAPP,  our  projections  of  what  will  effect  an  ownership 
change could be wrong, and with a waiver in place for certain shareholders, there is a risk that we experience an ownership 
change for purposes of IRC Sections 382 and 383 because of future acquisitions of our common stock.

Risks Related to Our Common Stock

Our stock price is subject to volatility.

The market price of our common stock has experienced substantial price volatility in the past and may continue to do so. The 
market price of our common stock may continue to be affected by numerous factors, including:

a.

b.

c.

d.

e.

f.

g.

h.

i.

j.

k.

market perception of the Arq Acquisition;

actual or anticipated fluctuations in our operating results and financial condition; 

changes in laws or regulations and court rulings and trends in our industry; 

announcements of sales awards; 

changes in supply and demand of components and materials; 

adoption of new tax regulations or accounting standards affecting our industry; 

changes in financial estimates by securities analysts; 

trends in social responsibility and investment guidelines;

whether we are able and elect to pay cash dividends;

the continuation of repurchasing shares of common stock under stock repurchase programs; and

the degree of trading liquidity in our common stock and general market conditions.

From  January  1,  2023  to  December  31,  2023,  the  closing  price  of  our  common  stock  ranged  from  $1.25  to  $3.66  per  share. 
Stock price volatility over a given period may cause the average price at which we repurchase shares of our common stock to 
exceed the stock’s price at a given point in time. We believe our stock price should reflect expectations of future growth and 
profitability. Future dividends are subject to declaration by the Board, and under our current stock repurchase program, we are 
not obligated to acquire any specific number of shares. If we fail to meet expectations related to future growth, profitability, 
dividends,  stock  repurchases  or  other  market  expectations,  our  stock  price  may  decline  significantly,  which  could  have  a 
material adverse impact on our ability to obtain additional capital and erode investor confidence, which could further reduce the 
liquidity of our common stock. We do not expect to repurchase additional shares of our common stock in the near term.

Our certificate of incorporation and bylaws contain provisions that may delay or prevent an otherwise beneficial takeover 
attempt of us.

Certain provisions of our certificate of incorporation and bylaws could make it more difficult for a third party to acquire us, 
even if doing so would be beneficial to our stockholders. These include provisions that:

a.

b.

c.

d.

Limit the business at special meetings of stockholders to the purpose stated in a notice of the meeting; 

Authorize  the  issuance  of  "blank  check"  preferred  stock,  which  is  preferred  stock  with  voting  or  other  rights  or 
preferences that could impede a takeover attempt and that the Board can create and issue without prior stockholder 
approval; 

Establish  advance  notice  requirements  for  submitting  nominations  for  election  to  the  Board  and  for  proposing 
matters that can be acted upon by stockholders at a meeting; and 

Require the affirmative vote of the "disinterested" holders of a majority of our common stock to approve certain 
business combinations involving an "interested stockholder" or its affiliates, unless either minimum price criteria or 
procedural requirements are met, or the transaction is approved by a majority of our "continuing directors" (known 
as "fair price provisions"). 

20

These provisions, alone or in combination with each other, may discourage transactions involving actual or potential changes of 
control, including transactions that otherwise could involve payment of a premium over prevailing market prices to holders of 
our common stock, or could limit the ability of our stockholders to approve transactions that they may deem to be in their best 
interest.

An increased focus on environmental, social and governance factors by institutional investors may negatively impact our 
access to capital and the liquidity of our stock price. 

Some institutional investors have recently adopted ESG investing guidelines that may prevent them from increasing or taking 
new stakes with companies with exposure to fossil fuels. Additional institutional investors may adopt similar ESG investment 
guidelines.  This  could  limit  both  the  demand  for  owning  our  common  stock  and/or  our  access  to  capital.  If  such  capital  is 
desired, we cannot assure you that we will be able to obtain any additional equity or debt financing on terms that are acceptable 
to us. Given these emerging trends, liquidity in our common stock and our stock price may be negatively impacted.

We  require  additional  funding  for  our  growth  plans,  and  such  funding  may  require  us  to  issue  additional  shares  of  our 
common stock resulting in a dilution of your investment.

We  estimate  our  funding  requirements  in  order  to  implement  our  growth  plans.  If  the  actual  funding  required  to  implement 
growth initiatives should exceed funding estimates significantly, or our funds generated from our operations from such growth 
initiatives prove insufficient for such purposes, we may need to raise additional funds to meet these funding requirements.

These additional funds may be raised by issuing equity or debt securities or by borrowing from banks or other resources. We 
cannot assure you that we will be able to obtain any additional financing on terms that are acceptable to us, or at all. If we fail to 
obtain  additional  financing  on  terms  that  are  acceptable  to  us,  we  may  not  be  able  to  implement  such  plans  fully.  Such 
financing,  even  if  obtained,  may  be  accompanied  by  conditions  that  limit  our  ability  to  pay  dividends  or  require  us  to  seek 
lenders’  consent  for  payment  of  dividends,  or  restrict  our  ability  to  operate  our  business  by  requiring  lender’s  consent  for 
certain corporate actions. Further, if we raise additional funds through the issuance of new shares of our common stock, any 
shareholders who are unable or unwilling to participate in such an additional round of fund raising may suffer dilution of their 
investment.

Certain Legacy Arq shareholders and participants in the PIPE Investment hold a significant portion of the voting power of 
our common stock.

Certain  Legacy  Arq  shareholders  and  participants  in  the  PIPE  Investment  hold  a  significant  percentage  of  our  outstanding 
common  stock,  and  such  persons,  acting  individually  or  together,  could  have  the  ability  to  exert  a  substantial  influence  on 
actions  requiring  a  stockholder  vote.  The  influence  of  these  significant  stockholders  may  be  used  in  a  manner  that  other 
stockholders may not support. Any such concentration of ownership may have the effect of delaying certain corporate actions, 
and may consequently impact the ability of other stockholders to influence the management and policies of the Company.

Item 1B. Unresolved Staff Comments

None.

Item 1C. Cybersecurity

Definitions

•

•

•

Cybersecurity  incident  means  an  unauthorized  occurrence,  or  a  series  of  related  unauthorized  occurrences,  on  or 
conducted through a registrant's information systems that jeopardizes the confidentiality, integrity, or availability of a 
registrant's information systems or any information residing therein. 

Cybersecurity threat means any potential unauthorized occurrence on or conducted through a registrant's information 
systems that may result in adverse effects on the confidentiality, integrity, or availability of a registrant's information 
systems or any information residing therein. 

Information systems means electronic information resources, owned, or used by the registrant, including physical or 
virtual  infrastructure  controlled  by  such  information  resources,  or  components  thereof,  organized  for  the  collection, 
processing,  maintenance,  use,  sharing,  dissemination,  or  disposition  of  the  registrant's  information  to  maintain  or 
support the registrant's operations. 

21

Risk Management and Strategy

We have established policies and processes for assessing, identifying, and managing material risk from cybersecurity threats, 
and  have  integrated  these  processes  into  our  overall  risk  management  processes.  We  routinely  assess  material  risks  from 
cybersecurity  threats,  including  any  potential  unauthorized  occurrence  on  or  conducted  through  our  information  systems  that 
may  result  in  adverse  effects  on  the  confidentiality,  integrity,  or  availability  of  our  information  systems  or  any  information 
residing therein.  

We  engage  third  parties  in  connection  with  our  risk  assessment  processes.  We  require  each  third-party  service  provider  to 
adhere  to  our  internal  security  policies  and  certify  that  it  has  the  ability  to  implement  and  maintain  appropriate  security 
measures, consistent with all applicable laws, to implement and maintain reasonable security measures in connection with their 
work with us, and to promptly report any suspected breach of its security measures that may affect our company. These service 
providers are primarily overseen by our Vice President of Information Technology ("VP of IT") and assist us in monitoring and 
testing  our  safeguards,  including  execution  of  external  penetration  testing  and  ongoing  real  time  vulnerability  assessments 
through  our  extended  detection  and  response  processes  to  identify  cybersecurity  threats.  We  conduct  risk  assessments  in  the 
event  of  a  material  change  in  our  business  processes  that  may  affect  information  systems  that  are  vulnerable  to  such 
cybersecurity threats through our normal change control processes.  These risk assessments include identification of reasonably 
foreseeable internal and external risks, the likelihood and potential damage that could result from such risks, and the sufficiency 
of existing policies, procedures, systems, and safeguards in place to manage such risks.  

Following these risk assessments, we re-design, implement, and maintain reasonable safeguards to minimize identified risks; 
reasonably address any identified gaps in existing safeguards; and regularly monitor the effectiveness of our safeguards.  We 
devote resources and personnel, including our VP of IT, who reports to our VP of Finance, to manage the risk assessment and 
mitigation process.  

As part of our overall risk management, we monitor and test our safeguards and train our employees on the importance of these 
safeguards. We maintain a formal information security awareness training program for all employees that includes training on 
matters  such  as  phishing,  email  security  best  practices  and  data  protection.  Employees  also  receive  random  phishing  tests  at 
regular intervals to further assess and mitigate overall risk.  

We  maintain  a  cybersecurity  incident  response  plan  to  help  ensure  a  timely,  consistent  and  compliant  response  to  actual  or 
attempted cybersecurity incidents impacting the Company. The Response Plan includes (1) detection, (2) analysis, which may 
include timely notice to our management and audit committee chair, (3) containment, (4) eradication, (5) recovery and (6) post-
incident review. We also maintain cybersecurity insurance to manage potential liabilities resulting from specific cybersecurity 
incidents. It is important to note that although we maintain cybersecurity insurance, there can be no guarantee that our insurance 
coverage limits will protect us against any future claims or that such insurance proceeds will be paid to us in a timely manner.    

To date there have been no cybersecurity incidents that have materially affected the Company or its operations. Despite security 
measures we have implemented, there is always the risk that certain cybersecurity incidents could materially disrupt operational 
systems limiting our ability to manufacture and deliver products to customers.

Governance

Our  VP  of  IT  has  approximately  five  years  of  experience  in  cybersecurity  and  oversees  our  cybersecurity  policies  and 
processes,  including  those  described  in  “Risk  Management  and  Strategy”  above.  Our  VP  of  IT  is  primarily  responsible  for 
assessing  and  managing  our  material  risks  from  cybersecurity  threats,  including  monitoring  and  assessing  strategic  risk 
exposure. 

While management is responsible for the day-to-day management of cybersecurity policies and procedures, our audit committee 
is  tasked  with  oversight  of  our  risk  management  process,  which  includes  risks  from  cybersecurity  threats.  The  processes  by 
which  our  audit  committee  is  informed  about  and  monitors  the  Company’s  strategy  regarding  the  prevention,  detection, 
mitigation, and remediation of cybersecurity incidents includes the following: 

Our VP of IT provides quarterly briefings to the audit committee regarding our company’s cybersecurity risks and activities, 
including any recent cybersecurity incidents and related responses, emerging threats and updates, cybersecurity systems testing, 
activities of third parties, and the like. Our audit committee and VP of IT provide regular updates to the board of directors on 
such  reports.  In  the  event  of  an  actual  cybersecurity  threat  or  incident,  management  is  notified  in  accordance  with  the 
cybersecurity response plan above.

22

Item 2. Properties

Office and Facilities

We own or lease land and facilities in the following States:

Colorado - We lease approximately 24,000 square feet for our corporate headquarters and primary research and development 
laboratory. 

Louisiana - We own the Red River Plant, which is located on approximately 61 acres. We also lease approximately 141,000 
square feet in various locations that is used for production, distribution and storage.

Kentucky - We lease approximately 470 acres in Corbin, Kentucky where we operate the Corbin Facility.

Mining

As of December 31, 2023, we owned or controlled, primarily through long-term leases, approximately 1,975 acres of coal land 
for surface mining located in Natchitoches Parish, Louisiana ("Five Forks"). The majority of the Five Forks land is leased for 
mineral rights and right-of-use purposes that expire at varying dates over the next 30 years and contain options to renew. The 
remaining land is owned by us. 

We  also  have  approximately  380  acres  of  land  containing  bituminous  coal  waste  at  the  Corbin  Facility  for  recovery  of 
bituminous coal fines, which is leased through August 31, 2025 and contains options to renew for successive five year terms 
until all merchantable fines are removed from the premises. Based on current operating assumptions, we intend to renew this 
lease for an additional five-year term.

Based on the materiality and the vertically-integrated company guidelines contained in Regulation S-K of the Securities Act and 
the Exchange Act, we have concluded that no additional disclosures related to our mining operations are required under this 
Item.  

Item 3. Legal Proceedings

From time to time, we are involved in various litigation matters arising in the ordinary course of our business. Information with 
respect  to  this  item  may  be  found  in  Note  8  "Commitments  and  Contingencies"  to  the  Consolidated  Financial  Statements 
included in Item 8 of this Report.

Item 4. Mine Safety Disclosures

The  statement  concerning  mine  safety  violations  or  other  regulatory  matters  required  by  Section  1503(a)  of  the  Dodd-Frank 
Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K is included in Exhibit 95 to this Report.

23

PART II

Item  5.  Market  for  Registrant’s  Common  Equity,  Related  Stockholder  Matters  and  Issuer  Purchases  of  Equity 
Securities

Market for Our Common Stock

Effective February 1, 2024, our common stock is quoted on the Nasdaq Global Market under the symbol "ARQ." Prior to that, 
our common stock was quoted on the Nasdaq Global Market under the symbol "ADES." The trading volume for our common 
stock is relatively limited. There is no assurance that an active trading market will provide adequate liquidity for our existing 
stockholders or for persons who may acquire our common stock in the future.

Dividends 

Our most recent dividend payment was in March 2020. We do not intend to declare or pay cash dividends in the foreseeable 
future.

Holders

The Company had 875 holders of record of our common stock as of March 5, 2024. The number of holders of record of our 
common stock is based upon the actual number of holders registered on the books of the Company as of such date and does not 
include holders of shares that are held in street name by brokers or other nominees.

Recent Sales of Unregistered Securities and Use of Proceeds from Registered Securities

On February 1, 2023, we entered into subscription agreements with certain persons (the "Subscribers"), which included existing 
shareholders  of  Arq  Ltd.,  three  of  which  were  appointed  to  our  Board  of  Directors,  pursuant  to  which  the  Subscribers 
subscribed for and purchased 3,842,315 shares of our Common Stock for an aggregate purchase price of  $15.4 million and at a 
price per share of $4.00 (such transaction, the "PIPE Investment").

On July 17, 2023, we entered into a subscription agreement (the "Subscription Agreement") with Mr. Robert "Bob" Rasmus and 
entities controlled by Mr. Rasmus, in connection with his appointment as our President and Chief Executive Officer. Pursuant 
to the Subscription Agreement, Mr. Rasmus subscribed for and agreed to purchase 950,000 shares of our common stock, par 
value  $0.001  per  share,  from  the  Company  for  an  aggregate  purchase  price  of  $1.8  million  (at  a  price  per  share  of 
approximately $1.90).

The  securities  issued  to  the  Subscribers  and  Mr.  Rasmus  under  the  PIPE  Investment  and  the  Subscription  Agreement, 
respectively, were issued pursuant to an exemption from registration under Section 4(a)(2) of the Securities Act, Rule 506 of 
Regulation D, which is promulgated thereunder, and Regulations S of the Securities Act. We are relying on this exemption from 
registration  based  in  part  on  representations  made  by  each  of  the  Subscribers  and  Mr.  Rasmus  under  their  respective 
subscription agreements. The sale of the securities pursuant to the PIPE Investment has been subsequently registered under the 
Securities Act on Registration No. 333-276375, which was declared effective on January 31, 2024. The sale of the securities 
pursuant to the Subscription Agreement (the "Subscriber Shares") has not been registered under the Securities Act or any state 
securities  laws.  The  Subscriber  Shares  may  not  be  offered  or  sold  in  the  United  States  absent  registration  or  an  applicable 
exemption from registration requirements.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Share Repurchases

We maintain a program to repurchase up to $20.0 million of shares of our common stock under a stock repurchase program (the 
"Stock  Repurchase  Program")  through  open  market  transactions  at  prevailing  market  prices,  of  which  $7.0  million  remained 
available at December 31, 2023. No purchases were made during the three months ended December 31, 2023. It is unlikely for 
the foreseeable future that we will resume repurchasing shares of our common stock under the Stock Repurchase Program. 

Tax Withholding

The  following  table  contains  information  about  common  shares  that  we  withheld  from  delivering  to  employees  during  the 
fourth quarter of 2023 to satisfy their respective tax obligations related to stock-based awards.

24

Total Number of 
Common Shares 
Purchased

Average Price
Paid per
Common Share

Total Number of 
Common Shares 
Purchased as Part of 
Publicly Announced 
Plans or Programs

Maximum Number 
(or Dollar Value) of 
Common Shares that 
May Yet Be 
Purchased Under the 
Plans or Programs

— 

—  $ 

7,969  $ 

— 

— 

2.71 

N/A

N/A

N/A

N/A

N/A

N/A

Period

October 1, 2023 to October 31, 2023

November 1, 2023 to November 30, 2023

December 1, 2023 to December 31, 2023

Item 6. Reserved

25

 
 
 
 
Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Overview 

We are an environmental technology company and are principally engaged in the sale of consumable air and water treatment 
solutions primarily based on AC. Our proprietary AC products enable customers to reduce air, soil, and water contaminants, 
including  mercury,  PFAS  and  other  pollutants,  to  help  our  customers  maximize  utilization  effectiveness  and  to  improve 
operating efficiencies to meet the challenges of existing and pending air quality, soil, and water regulations. We manufacture 
and sell AC and other chemicals used to capture and remove contaminants for coal-fired power generation, industrial and water 
treatment markets, which we collectively refer to as the advanced purification technologies or "APT" market. 

Our primary products are comprised of AC, which is produced from a variety of carbonaceous raw materials. Our AC products 
include both PAC and GAC. Additionally, we own the Five Forks Mine, a lignite mine that currently supplies the primary raw 
material for the manufacturing of our products.

In February 2023, we acquired 100% of the equity of the subsidiaries of Arq Limited (hereafter the Arq Limited subsidiaries 
referred to as "Legacy Arq", and the acquisition itself referred to as the "Arq Acquisition") to secure access to a feedstock, a 
manufacturing facility and certain patented processes as a means to manufacture additional GAC products for sale into the APT 
and other markets. With the Arq Acquisition, we now control bituminous coal waste reserves and own a manufacturing facility, 
both located in Corbin, Kentucky (the "Corbin Facility"), and a process to recover and purify the bituminous coal fines for sale 
or  further  conversion  to  GAC  products.  Under  this  manufacturing  process,  we  convert  coal  waste  into  a  purified,  microfine 
carbon  powder  known  as  Arq  powderTM  ("Arq  Powder").  We  expect  to  begin  using  Arq  Powder  as  a  feedstock  to  begin 
manufacturing  GAC  products  by  the  end  of  2024  to  begin  using  Arq  Powder  as  a  feedstock  to  produce  high-quality  GAC 
products for sale in the APT and other markets.

We believe Arq Powder has additional potential for us to access new markets and applications. We expect to secure customer 
interest in Arq Powder as an additive into other markets, such as components for asphalt. These products utilizing Arq Powder 
are expected to have a lower carbon footprint compared to similar products utilizing conventional materials. These applications 
are currently in various stages of proof of concept testing or preliminary customer testing.

In  February  2024,  as  part  of  a  larger  rebranding,  the  Company  changed  its  name  to  Arq,  Inc.,  and  on  February  1,  2024,  our 
common stock commenced trading under the ticker symbol, "ARQ".

Drivers of Demand and Key Factors Affecting Profitability

Drivers  of  demand  and  current  key  factors  affecting  our  profitability  are  sales  of  our  AC  products  to  the  APT  market.  Our 
operating results are influenced by: (1) changes in our manufacturing production and sales volumes; (2) changes in price and 
product  mix;  (3)  changes  in  coal-fired  dispatch  and  electricity  power  generation  sources  and  (4)  changes  in  demand  for 
contaminant removal within water treatment facilities.

Components of Revenue, Expenses and Equity Method Investees 

The  following  briefly  describes  the  components  of  revenue  and  expenses  as  presented  in  the  Consolidated  Statements  of 
Operations. Descriptions of the revenue recognition policies are included in Note 1 to the Consolidated Financial Statements 
included in Item 8 of this Report. 

Revenue and cost of revenue

Consumables

Our revenue is comprised of the sale of AC products and other chemical-based technology products in the APT market, as well 
as the sale of other AC products to our largest customer, who services other diverse markets. 

Consumables cost of revenue

Consumables  cost  of  revenue  is  comprised  of  all  labor,  fringe  benefits,  subcontract  labor,  additive  and  coal  costs,  materials, 
equipment, supplies, travel costs and any other costs and expenses directly related to the cost of production of consumables.

26

License royalties payable to Tinuum Group

In  December  2022,  the  Company  and  Tinuum  Group  entered  into  an  agreement  (the  "Tinuum  Group  Royalty  Agreement") 
whereby we pay Tinuum Group a royalty (the "Tinuum Group Royalty") for certain of our sales of M-ProveTM products after 
the expiration of the tax credit program under IRC Section 45 ("Section 45 Tax Credit Program") (beginning January 1, 2022) 
to  certain  of  the  M-45  Facilities.  The  Tinuum  Group  Royalty  is  calculated  based  on  "Net  Profit"  (as  defined  in  the  Tinuum 
Royalty  Agreement)  on  our  sales  of  M-ProveTM  product  to  certain  of  the  M-45  Facilities.  The  Tinuum  Group  Royalty 
Agreement  is  for  an  initial  term  of  five  years  with  automatic  renewals  of  five  years  unless  we  and  Tinuum  Group  agree  to 
terminate it. The Tinuum Group Royalty is included in Consumables cost of revenue.

Other Operating Expenses

Payroll and benefits 

Payroll  and  benefits  costs  include  payroll  costs,  payroll  related  fringe  benefits  and  stock  based  compensation  expense  of 
research and development, sales and administrative personnel, but exclude such costs related to direct labor that are included in 
Cost of revenue. 

Legal and professional fees 

Legal and professional costs include external legal, audit and consulting expenses.

General and administrative 

General and administrative costs include director fees and expenses, bad debt expense, research and development expense and 
other general costs of conducting business. Research and development costs provided by third parties, net of reimbursements 
from  cost-sharing  arrangements,  are  charged  to  expense  in  the  period  incurred  and  are  reported  in  the  General  and 
administrative line item in the Consolidated Statements of Operations. 

Depreciation, amortization, depletion and accretion

Depreciation  and  amortization  expense  consists  of  depreciation  expense  related  to  property,  plant  and  equipment  and  the 
amortization  of  long-lived  intangible  assets.  Depletion  and  accretion  expense  consists  of  depletion  expense  related  to  the 
depletion of mine development costs and the accretion of mine reclamation liabilities.

Other Income (Expense), net

Earnings from equity method investments 

Earnings from equity method investments represent our share of earnings (losses) related to equity method investments, and in 
2023,  primarily  from  Tinuum  Group.  Through  December  31,  2021,  we  had  substantial  earnings  from  Tinuum  Group  and 
Tinuum Services, LLC ("Tinuum Services"). With the expiration of the tax credit program under IRC Section 45 afforded to 
producers of refined coal as of December 31, 2021, both Tinuum Group and Tinuum Services commenced winding down their 
operations related to the Section 45 tax credit program, although we have recognized earnings in both 2022 and 2023 related to 
residual cash distributions received. 

Other income (expense)

The remaining components of other income (expense) include interest income, interest expense and other miscellaneous items. 

Results of Operations

Presentation of Financial Results

For  comparison  purposes,  the  following  tables  set  forth  our  results  of  operations  for  the  years  presented  in  the  Consolidated 
Financial  Statements  included  in  Item  8  of  this  Report.  The  year-to-year  comparison  of  financial  results  is  not  necessarily 
indicative  of  financial  results  that  may  be  achieved  in  future  years.  Our  Annual  Report  on  Form  10-K  for  the  year  ended 
December 31, 2023 includes a discussion and analysis of our financial condition and results of operations for the year ended 
December 31, 2023 compared to the year ended December 31, 2022, disclosed in Item 7 of Part II, "Management’s Discussion 
and Analysis of Financial Condition and Results of Operations."

27

Year ended December 31, 2023 Compared to Year ended December 31, 2022 

Total Revenue and Cost of Revenue
A summary of the components of revenue and cost of revenue for the years ended December 31, 2023 and 2022 is as follows:

(Amounts in thousands except percentages)
Revenue:

Consumables

Total revenue

Years Ended December 31,

Change

2023

2022

($)

(%)

$ 

$ 

99,183  $  102,987  $ 

(3,804) 

99,183  $  102,987  $ 

(3,804) 

 (4) %

 (4) %

Consumables cost of revenue, exclusive of depreciation and 
amortization

$ 

67,323  $ 

80,465  $ 

(13,142) 

 (16) %

Consumables revenue and consumables cost of revenue

For the years ended December 31, 2023 and 2022, consumables revenue decreased year over year primarily driven by lower 
volumes  sold,  which  comprised  $20.0  million  of  the  total  change.  Product  volumes  decreased  among  power  generation 
customers, primarily due to lower natural gas prices compared to 2022, which contributed to decreased utilization of coal-fired 
generation and decreased demand for our products. Partially offsetting the decrease was an increase due to improved pricing for 
our products of approximately $10.6 million, $4.7 million of revenue recognized from the settlement of certain contracts with 
customers containing minimum quantity purchases ("MQ Contacts") and the impact of favorable product mix of approximately 
$0.7 million.

Consumables  gross  margin,  exclusive  of  depreciation  and  amortization,  increased  for  the  year  ended  December  31,  2023 
compared  to  2022.  Driving  the  increase  in  gross  margin  were  the  impact  of  the  MQ  contracts  and  decreased  cost  of  our 
feedstock and additives, primarily as a result of decreased production volumes during 2023. Our consumables gross margin was 
negatively impacted by a decrease in volumes sold.

Consumables revenue continues to be affected by electricity demand, driven by seasonal weather and related power generation 
needs, as well as competitor prices related to alternative power generation sources such as natural gas and renewables.

Other Operating Expenses

A summary of the components of our operating expenses, exclusive of cost of revenue items (presented above), for the years 
ended December 31, 2023 and 2022 is as follows:

(in thousands, except percentages)
Operating expenses:

Payroll and benefits
Legal and professional fees

General and administrative

Depreciation, amortization, depletion and accretion

Gain on sale of Marshall Mine, LLC

Other

* Calculation not meaningful

Payroll and benefits 

Years Ended December 31,

Change

2023

2022

($)

(%)

$ 

15,154  $ 
9,588 

10,540  $ 
9,455 

12,641 

10,543 

(2,695)   

(36)   

8,145 

6,416 

— 

34 

4,614 
133 

4,496 

4,127 

(2,695) 

(70) 

$ 

45,195  $ 

34,590  $ 

10,605 

 44 %
 1 %

 55 %

 64 %

*

 (206) %

 31 %

Payroll and benefits expenses increased year over year primarily due to the addition of Legacy Arq employees, which increased 
expenses by $4.9 million for the year, of which $1.1 million related to severance expense of former executives of Legacy Arq. 
In  addition,  for  the  year  ended  December  31,  2023,  we  incurred  severance  related  costs  of  $1.7  million  associated  with  the 
termination of three executive employees. These increases were partially offset by a decrease in incentive compensation related 

28

 
 
 
 
 
 
 
 
 
 
 
 
 
to non-Legacy Arq employees for the year ended December 31, 2023 of $1.3 million compared to the corresponding period in 
2022. An additional decrease in payroll and benefits was due to retention bonuses with our executive officers and certain other 
key employees of $1.2 million, which were paid in full in January 2023.

Legal and professional fees

Legal and professional fees remained flat year over year.

General and administrative 

General and administrative expenses increased for the year ended December 31, 2023 compared to the corresponding period in 
2022  as  a  result  of  $2.5  million  of  expenses  incurred  on  behalf  of  Legacy  Arq,  which  included  $1.2  million  from  rent  and 
occupancy expense from additional leased space. Additional increases period over period of approximately $2.0 million were 
due to increases in insurance, research and development, travel, recruiting and other outside labor, and director compensation as 
three new directors were added to the board in connection with the Arq Acquisition.

Depreciation, amortization, depletion and accretion 

Depreciation and amortization expense increased for the year ended December 31, 2023 compared to the corresponding period 
in 2022 primarily due to depreciation and amortization of approximately $2.8 million from the addition of long-lived assets and 
intangible  assets  acquired  in  the  Arq  Acquisition.  Also  contributing  to  the  increase  was  an  increase  in  Depreciation  and 
amortization expense due to higher production volumes compared to sales volumes which resulted in $1.0 million additional 
absorption of depreciation in inventory.

Gain on sale of Marshall Mine, LLC

As discussed above, for the year ended December 31, 2023, we recognized a gain of $2.7 million on the sale of Marshall Mine, 
LLC. 

Other Income (Expense), net

A summary of the components of our other income (expense), net for the years ended December 31, 2023 and 2022 is as 
follows:

(Amounts in thousands, except percentages)
Other income, net:

Earnings from equity method investments

Interest expense

Other

Total other income, net

Earnings from equity method investments

Years Ended December 31,

Change

2023

2022

($)

(%)

$ 

1,623  $ 

3,541  $ 

(3,014)   

2,630 

(336)   

155 

(1,918) 

(2,678) 

2,475 

$ 

1,239  $ 

3,360  $ 

(2,121) 

 (54) %

 797 %

 1,597 %

 (63) %

The following table presents the equity method earnings by investee for the years ended December 31, 2023 and 2022:

(in thousands)
Earnings from Tinuum Group

Earnings from Tinuum Services

Earnings from other

Years Ended December 31,

Change

2023

2022

($)

(%)

$ 

1,148  $ 

3,455  $ 

(2,307) 

475 

— 

85 

1 

390 

(1) 

 (67) %

 459 %

 (100) %

 (54) %

Earnings from equity method investments

$ 

1,623  $ 

3,541  $ 

(1,918) 

29

 
 
 
 
 
 
 
 
 
 
Earnings  from  equity  method  investments  for  the  year  ended  December  31,  2023  and  2022  represented  cash  distributions 
received from Tinuum Group and Tinuum Services. The decrease was primarily due to Tinuum Group and Tinuum Services 
continuing to wind down their operations in 2023.

Interest expense 

Interest expense increased for the year ended December 31, 2023 compared to the corresponding period in 2022 primarily due 
to interest expense of $2.0 million related to the $10 million CFG Loan and interest expense of $0.5 million incurred for the 
same period related to the $10 million CTB Loan assumed by us in the Arq Acquisition.

Other

The increase in Other is primarily driven by interest income of $1.8 million generated from the use of cash sweep accounts in 
2023.

Income tax expense 

For the year ended December 31, 2023, our reported income tax expense was $0.2 million and was based on an effective rate of 
(1)%.  The  difference  between  our  reported  income  tax  expense  and  the  expected  federal  benefit,  as  a  result  of  pretax  loss 
recognized  for  the  year  ended  December  31,  2023,  was  primarily  due  to  permanent  differences  related  to  acquisition-related 
costs, an increase in the valuation allowance on our deferred tax assets and stock-based compensation. 

For the year ended December 31, 2022, our reported income tax expense was $0.2 million and was based on an effective rate of 
(2)%.  The  difference  between  our  reported  income  tax  expense  and  the  expected  federal  benefit,  as  a  result  of  pretax  loss 
recognized  for  the  year  ended  December  31,  2023,  was  primarily  due  to  permanent  differences  related  to  acquisition-related 
costs and an increase in the valuation allowance on our deferred tax assets.

Accounting  for  income  taxes  requires  that  companies  assess  whether  a  valuation  allowance  should  be  recorded  against  their 
deferred tax asset based on an assessment of the amount of the deferred tax asset that is "more likely than not" to be realized. 
Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount that is more likely than not to 
be realized. 

We  assess  a  valuation  allowance  recorded  against  deferred  tax  assets  at  each  reporting  date.  The  determination  of  whether  a 
valuation allowance for deferred tax assets is appropriate requires the evaluation of positive and negative evidence that can be 
objectively  verified.  Consideration  must  be  given  to  all  sources  of  taxable  income  available  to  realize  the  deferred  tax  asset, 
including, as applicable, the future reversal of existing temporary differences, future taxable income forecasts exclusive of the 
reversal  of  temporary  differences  and  carryforwards,  taxable  income  in  carryback  years  and  tax  planning  strategies.  In 
estimating  taxes,  we  assess  the  relative  merits  and  risks  of  the  appropriate  tax  treatment  of  transactions  taking  into  account 
statutory, judicial, and regulatory guidance.

As of December 31, 2023, we concluded it is more likely than not we will not generate sufficient taxable income within the 
allowable  carryforward  periods  to  realize  any  of  our  net  deferred  tax  assets,  and  fully  reserved  for  such  assets  as  of 
December 31, 2023. In reaching this conclusion, we primarily considered forecasts of future taxable losses. As of December 31, 
2023 and 2022, we had a valuation allowance of $98.8 million and $88.3 million, respectively, on our deferred tax assets.

The ability to recognize the remaining deferred tax assets that continue to be subject to a valuation allowance is evaluated on a 
quarterly basis to determine if there are any significant events that would affect the ability to utilize those deferred tax assets. 
Our  estimate  of  future  taxable  income  or  losses  is  based  on  internal  projections  that  consider  historical  performance, 
assumptions on future performance and external data. If events are identified that affect our ability to utilize our deferred tax 
assets,  or  if  additional  deferred  tax  assets  are  generated,  we  update  our  analysis  to  determine  if  an  increase  to  a  valuation 
allowance is required. Such an increase could have a material adverse effect on our financial condition and results of operations. 
Conversely,  better  than  expected  results  and  continued  positive  results  and  trends  could  result  in  a  decrease  to  a  valuation 
allowance, and any such decreases could have a material positive effect on our financial condition and results of operations. 

See additional discussion in Note 13 of the Consolidated Financial Statements included in Item 8 of this Report. 

Tax Assets

Through  December  31,  2021,  we  earned  substantial  tax  credits  under  the  Section  45  tax  credit  program,  which  expired  on 
December 31, 2021. As of December 31, 2023, we had approximately $86.1 million in Section 45 tax credit carryforwards.

30

In  the  hypothetical  event  of  an  "ownership  change,"  as  defined  by  IRC  Sections    382,  utilization  of  general  business  credits 
("Tax Credits") generated prior to the change would be subject to an annual limitation imposed by IRC Section 383 for Tax 
Credits. In connection with the Arq Acquisition and PIPE Investment, we issued additional shares of our common stock. We 
performed an IRC Section 382 analysis as of the Acquisition Date and determined that we had not experienced an ownership 
change as of that date. 

Prior to the Acquisition Date, Legacy Arq completed numerous equity offerings that resulted in ownership changes. We have 
not  completed  a  formal  IRC  Section  382  analysis  of  Legacy  Arq  equity  changes  from  its  inception  through  the  Acquisition 
Date, however, we believe that one or more "ownership changes" occurred during this time period as defined under Sections 
382 and 383 and that a portion or all the Legacy Arq Tax Assets may subject to an annual limitation.

31

Non-GAAP Financial Measures

To  supplement  our  financial  information  presented  in  accordance  with  U.S.  Generally  Accepted  Accounting  Principles 
("GAAP"),  we  provide  certain  supplemental  financial  measures,  including  EBITDA  and  Adjusted  EBITDA,  which  are 
measurements that are not calculated in accordance with U.S. Generally Accepted Accounting Principles ("GAAP"). EBITDA 
is  defined  as  earnings  before  interest,  taxes,  depreciation  and  amortization,  and  Adjusted  EBITDA  is  defined  as  EBITDA 
reduced  by  the  non-cash  impact  of  equity  earnings  from  equity  method  investments  and  gain  on  sale  of  the  Marshall  Mine, 
increased by cash distributions from equity method investments, loss on early settlement of a long-term receivable and loss on 
change in estimate, asset retirement obligations. EBITDA and Adjusted EBITDA should be considered in addition to, and not 
as a substitute for, net income in accordance with GAAP as a measure of performance. See below for a reconciliation from Net 
income, the nearest GAAP financial measure, to EBITDA and Adjusted EBITDA.

We  believe  that  the  EBITDA  and  Adjusted  EBITDA  measures  are  less  susceptible  to  variances  that  affect  the  Company's 
operating  performance.  We  include  these  non-GAAP  measures  because  management  uses  them  in  the  evaluation  of  our 
operating performance, and believe they help to facilitate comparison of operating results between periods. We believe the non-
GAAP  measures  provide  useful  information  to  both  management  and  users  of  the  financial  statements  by  excluding  certain 
expenses, gains, and losses which can vary widely across different industries or among companies within the same industry and 
may not be indicative of core operating results and business outlook.

32

EBITDA and Adjusted EBITDA  

The following table reconciles net loss, our most directly comparable as-reported financial measure calculated in accordance 
with GAAP to EBITDA, (EBITDA Loss), (Adjusted EBITDA Loss) and Adjusted EBITDA. 

Year ended December 31,

2023

2022

Net loss (1)

Depreciation, amortization, depletion and accretion

Amortization of Upfront Customer Consideration

Interest expense, net

Income tax expense

EBITDA (EBITDA Loss)

Cash distributions from equity method investees

Equity earnings

Gain on sale of Marshall Mine, LLC

Loss (gain) on change in estimate, asset retirement obligation

Loss on early settlement of an account receivable

$ 

(12,249)  $ 

10,543 

508 

1,168 

153 

123 

1,623 

(1,623)   

(2,695)   

(37)   

— 

Adjusted (EBITDA Loss) EBITDA

$ 

(2,609)  $ 

(8,917) 

6,416 

508 

97 

209 

(1,687) 

5,933 

(3,541) 

— 

34 

535 

1,274 

(1) Included in Net loss for the year ended December 31, 2023 and 2022 was $4.9 million and $5.0 million, respectively, of transaction and 
integration costs incurred related to the Arq Acquisition. Additionally, for the year ended December 31, 2023, Net loss included $4.9 million 
of Legacy Arq payroll and benefit costs and $1.7 million of severance expense related to three executive employees.

Liquidity and Capital Resources 

Current Resources and Factors Affecting Our Liquidity

As of December 31, 2023, our principal future sources of liquidity included:

•

•

cash on hand, excluding restricted cash of $8.8 million primarily pledged as collateral under a surety bond agreement; 
and
our operations

For the year ended December 31, 2023, our principal uses of liquidity included:

•
•
•
•
•

our business operating expenses;
capital and spare parts expenditures;
payments on our lease obligations; 
payments for reclamation associated with the Five Forks Mine; and
payment required under the sale of Marshall Mine, LLC.

On February 1, 2023, in connection with the Arq Acquisition, we closed the PIPE Investment for an aggregate purchase price of 
$15.4 million. Further, on February 1, 2023 we entered into the CFG Loan Agreement for $10.0 million, of which we received 
$8.5 million net proceeds.

33

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Tinuum Group and Tinuum Services Distributions

The following table summarizes the cash distributions from our equity method investments for the years ended December 31, 
2023 and 2022:

(in thousands)
Tinuum Group

Tinuum Services

Other

Distributions from equity method investees

Year ended December 31,

2023

2022

$ 

$ 

1,148  $ 

475 

— 

1,623  $ 

3,455 

2,476 

2 

5,933 

Cash distributions from Tinuum Group and Tinuum Services for 2023 decreased by $4.3 million compared to 2022 primarily 
due to Tinuum Group and Tinuum Services ceasing material operations as of December 31, 2021.

Cash Flows

Cash and restricted cash decreased from $76.4 million as of December 31, 2022, to $54.2 million as of December 31, 2023, a 
decrease of $22.3 million. The following table summarizes our cash flows for the years ended December 31, 2023 and 2022, 
respectively:

(in thousands)
Cash provided by (used in):

Operating activities

Investing activities

Financing activities

Net change in Cash and Restricted Cash

Cash flows from operating activities

Years Ended December 31,

2023

2022

Change

$  (16,653)  $ 

(6,061)  $  (10,592) 

(28,535)   

(4,608)   

(23,927) 

22,909 

(1,679)   

24,588 

$  (22,279)  $  (12,348)  $ 

(9,931) 

Cash flows used in operating activities for the year ended December 31, 2023 was $16.7 million compared to cash flows used 
in operating activities of $6.1 million for the year ended December 31, 2022. The increase in cash used in operating activities 
was primarily due to the following: (1) an increase in net loss of $3.3 million year over year; (2) a $2.7 million gain on the sale 
of the Marshall Mine, LLC; (3) a decrease in Distributions from equity method investees, return on investment of $2.3 million 
year over year; and (4) a net decrease in working capital of $8.9 million primarily as a result of significant payments made in 
2023 on accounts payable and accrued expenses assumed in the Arq Acquisition. Offsetting the net increase in cash flows used 
in operating activities year over year were (1) an increase in Depreciation, amortization, depletion and accretion of $4.1 million; 
and (2) a decrease in Earnings from equity method investments of $1.9 million. 

Cash flows from investing activities

Cash flows used in investing activities for the year ended December 31, 2023 was $28.5 million compared to cash flows used in 
investing  activities  of  $4.6  million  for  the  year  ended  December  31,  2022.  The  increase  was  primarily  due  to  an  increase  in 
acquisition of property, equipment and intangibles, net, of $18.6 million primarily related to acquisition costs related to the Arq 
Acquisition,  a  payment  of  $2.2  million  related  to  the  disposal  of  Marshall  Mine,  LLC,  increased  mine  development  costs  of 
$2.1 million, and a decrease in distributions from equity earnings in excess of cumulative earnings of $2.0 million. Offsetting 
the  net  increase  in  cash  flows  used  in  investing  activities  year  over  year  was  $2.2  million  cash  acquired  as  part  of  the  Arq 
Acquisition.

Cash flows from financing activities

Cash flows provided by (used in) financing activities for the year ended December 31, 2023 increased by $24.6 million 
compared to the year ended December 31, 2022 primarily due to proceeds from common stock issued of $16.2 million, 

34

 
 
 
 
 
 
 
including $1.0 million of proceeds from common stock issued to related parties, and net proceeds from the issuance of the CFG 
Loan Agreement of $8.5 million. 

Material Cash Requirements

Our  ability  to  continue  to  generate  sufficient  cash  flow  required  to  meet  ongoing  operational  needs  and  obligations  depends 
upon several factors. These include executing on our contracts and initiatives and increasing our share of the market for APT 
consumables, including expanding our overall AC business into additional adjacent markets and increasing our gross margin 
from improving our customer and product mix. 

Based on current operating levels, we expect that our cash on hand as of December 31, 2023 will provide sufficient liquidity to 
fund operations for the next 12 months.

Capital expenditures

We  have  targeted  the  end  of  2024  for  the  completion  of  our  Red  River  Plant  expansion  that  is  necessary  to  commence 
production of our new GAC products. To meet this target, we will incur substantial capital spend in excess of our originally 
forecasted amount for additional equipment, labor, and project costs. The Company anticipates financing the timely completion 
of the project funded with cash on hand, cash generation, ongoing cost reduction initiatives, potential customer prepayments for 
GAC  contracts,  and  a  planned  refinancing  and  potential  expansion  of  our  term  loan.  If  we  are  not  able  to  secure  additional 
financing, the project timeline for our Red River Plant expansion may be delayed beyond the end of 2024.

During 2024, we expect to spend between $45 and $50 million on the Red River Plant expansion, depending on the pace of the 
project,  as  well  as  between  $5  and  $10  million  to  complete  our  commissioning  of  the  Corbin  Facility.  Capital  expenditures 
planned  for  2024  are  dependent  on  many  factors,  including  the  ability  to  raise  additional  funding  and  approval  of  certain 
environmental permits, both of which may impact the timing and amount of capital expenditures.

Surety Bonds

As  of  December  31,  2023,  we  had  outstanding  surety  bonds  with  regulatory  commissions  totaling  $11.2  million  primarily 
related to the Five Forks Mine and the Corbin Facility. As of December 31, 2023, and as required by our surety bond provider, 
we held restricted cash of $8.5 million pledged as collateral related to performance requirements required under a reclamation 
contract for the Five Forks Mine and the Corbin Facility. We expect that the obligations secured by these surety bonds will be 
performed  in  the  ordinary  course  of  business  and  in  accordance  with  the  applicable  contractual  terms.  To  the  extent  that  the 
obligations are performed, the related surety bonds may be released and collateral requirements may be reduced. However, in 
the event any surety bond is called, our indemnity obligations could require us to reimburse the surety bond provider.

Long Term Requirements

For a discussion of our long-term cash requirements, see Item 8. Note 6 of this Report.

Contractual Obligations

Contractual obligations as of December 31, 2023 are as follows:

(in thousands)

CFG Loan

CTB Loan

Finance lease obligations

Operating lease obligations

Payment Due by Period

Total

Less than 1 
year

1-3 years

4-5 years

After 5 years

$ 

12,199  $ 

—  $ 

—  $ 

12,199  $ 

13,413 

3,666 

18,559 

1,110 

2,274 

3,139 

2,220 

1,307 

5,747 

2,220 

85 

2,595 

— 

7,863 

— 

7,078 

$ 

47,837  $ 

6,523  $ 

9,274  $ 

17,099  $ 

14,941 

The table above excludes our asset retirement obligation ("ARO") related to reclamation of the Five Forks Mine, as the timing 
and amount of payments to satisfy the ARO are uncertain and are based on numerous factors including, but not limited to, the 
expected closure date of the Five Forks Mine. As of December 31, 2023, our Consolidated Balance Sheet reflects a liability for 
AROs of $6.2 million. Additionally, the table above excludes construction costs related to the Red River Plant expansion and 
Corbin Facility commissioning referred to under "Capital Expenditures" caption above, as the timing and amount of payments 

35

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
to satisfy these obligations are conditional and based on numerous factors including, but not limited to, the pace of construction 
activities and the timing of mechanical completion of the Red River Plant expansion and commissioning activities at the Corbin 
Facility.

Critical Accounting Policies and Estimates

Our significant accounting policies are discussed in Note 1 to the Consolidated Financial Statements included in Item 8 of this 
Report. In presenting our financial statements in conformity with GAAP, we are required to make estimates and assumptions 
that affect the amounts reported therein. Several of the estimates and assumptions we are required to make relate to matters that 
are inherently uncertain as they pertain to future events. Our estimates are based on historical experience and other assumptions 
believed  to  be  reasonable  under  the  circumstances,  and  we  evaluate  these  estimates  on  an  ongoing  basis.  Actual  results  may 
differ from these estimates under different assumptions or conditions.

We believe that the accounting estimates discussed below are critical to understanding our historical and future performance, as 
these estimates relate to the more significant areas involving management’s judgments and estimates.

Business Combinations, including asset acquisitions

We apply the acquisition method to acquisitions of both businesses and assets and allocate the purchase price to the tangible 
and intangible assets acquired and liabilities assumed based on their estimated fair values at the acquisition date. The purchase 
price allocation process requires us to make significant estimates and assumptions with respect to assets acquired and liabilities 
assumed. We believe the assumptions and estimates we make are reasonable, they are based in part on historical experience, 
market conditions and information obtained from management of the acquired company or group of assets and are inherently 
uncertain. 

Examples  of  critical  estimates  in  valuing  certain  of  long-lived  assets,  including  intangible  assets,  we  have  acquired  or  may 
acquire in the future include but are not limited to:

•

•

•

•

future expected cash flows from revenue;

the acquired company’s developed technology as well as assumptions about the period of time the acquired developed 
technology will continue to be used in the combined company's product portfolio;

the expected use and useful lives of the acquired assets; and

valuation methods and discount rates used in estimating the values of the assets acquired and liabilities assumed. 

Carrying value of long-lived assets and intangibles

We review and evaluate our long-lived assets and intangibles for impairment at least annually, or more frequently when events 
or changes in circumstances indicate that the related carrying amounts may not be recoverable. An impairment loss is measured 
and recorded for long-lived assets and intangibles based on the excess of their carrying amounts over their estimated fair values.  
Fair value is typically determined through the use of an income approach utilizing estimates of discounted pretax future cash 
flows or a market approach utilizing recent transaction activity for comparable assets. 

Asset Retirement Obligations 

Accounting for AROs requires us to make estimates of future costs unique to a specific mining operation that we will incur to 
complete the reclamation and remediation work required to comply with existing laws and regulations. Any such changes in 
future  costs,  the  timing  of  reclamation  activities,  scope  or  the  exclusion  of  certain  costs  not  considered  reclamation  and 
remediation  costs  could  materially  impact  the  amounts  charged  to  earnings  for  reclamation  and  remediation.  Additionally, 
future changes to environmental laws and regulations could increase the scope of reclamation and remediation work required.

Reclamation costs related to AROs are allocated to expense over the life of the related mine assets and are periodically adjusted 
to reflect changes in the estimated present value resulting from the passage of time and revisions to the estimates of either the 
timing  or  amount  of  the  reclamation  costs.  Remediation  costs  are  accrued  based  on  management’s  best  estimate  of  the  costs 
expected  to  be  incurred.  Such  cost  estimates  may  include  ongoing  care,  maintenance  and  monitoring  costs.  Reclamation 
obligations are based on the timing of estimated spending for an existing environmental disturbance. We review, on at least an 
annual basis, the future expected costs and the timing of such costs for AROs.

36

Income Taxes

We account for income taxes under the asset and liability method, which requires judgment in determining income tax expense 
and the related balance sheet amounts. This includes estimating and analyzing historical and projected future operating results, 
the  reversal  of  taxable  temporary  differences,  tax  planning  strategies,  and  the  ultimate  outcome  of  uncertain  income  tax 
positions.  Actual  income  taxes  paid  may  vary  from  estimates  depending  on  changes  in  income  tax  laws,  actual  results  of 
operations, state apportionment and, if applicable, final audits of tax returns by taxing authorities. Tax assessments may arise 
several  years  after  tax  returns  have  been  filed.  Changes  in  the  estimates  and  assumptions  used  for  calculating  income  tax 
expense and potential differences in actual results from estimates could have a material impact on our results of operations and 
financial condition.

We recognize deferred tax assets to the extent that we believe these assets are more likely than not to be realized. In making 
such  a  determination,  we  consider  all  available  positive  and  negative  evidence,  including  future  reversals  of  existing  taxable 
temporary differences, projected future taxable income, tax-planning strategies and results of recent operations. 

We establish a valuation allowance against our deferred tax assets when, based upon the weight of all available evidence, we 
believe  it  is  more  likely  than  not  that  some  portion  or  all  of  the  deferred  tax  assets  will  not  be  realized.  In  making  this 
determination, we consider the relative impact of all of the available positive and negative evidence regarding future sources of 
taxable  income  and  tax  planning  strategies.  However,  there  could  be  a  material  impact  to  our  effective  tax  rate  if  there  is  a 
significant change in our estimates of future taxable income. If and when our estimates change, or there is a change in the value 
of deferred tax assets or liabilities warranting the need to reassess the realizability of deferred tax assets, we adjust a valuation 
allowance through the provision for income taxes in the period in which this determination is made. Refer to Note 13 of our 
Consolidated Financial Statements included in Item 8 of this Report for additional information regarding our deferred tax assets 
and liabilities.

Recently Issued Accounting Standards 

Refer to Note 1 of the Consolidated Financial Statements included in Item 8 of this Report for information regarding recently 
issued accounting standards.

37

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

The information under this Item is not required to be provided by smaller reporting companies.

38

Item 8. Financial Statements and Supplementary Data

Arq, Inc.

Index to Financial Statements

Arq, Inc.

Consolidated Financial Statements:

Report of Independent Registered Public Accounting Firm (Moss Adam LLP, Denver, Colorado, PCAOB ID: 
659)
Consolidated Balance Sheets as of December 31, 2023 and 2022

Consolidated Statements of Operations for the years ended December 31, 2023 and 2022

Consolidated Statements of Changes in Stockholders’ Equity for the years ended December 31, 2023 and 2022

Consolidated Statements of Cash Flows for the years ended December 31, 2023 and 2022

Notes to Consolidated Financial Statements

40

42

43
44

45

47

39

Report of Independent Registered Public Accounting Firm

To the Shareholders and the Board of Directors of
Arq, Inc. and Subsidiaries

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Arq, Inc. and Subsidiaries  (the Company) as of December 
31, 2023 and 2022, the related consolidated statements of operations, changes in stockholders’ equity, and cash flows for the 
years  then  ended,  and  the  related  notes  (collectively  referred  to  as  the  consolidated  financial  statements).  In  our  opinion,  the 
consolidated financial statements present fairly, in all material respects, the consolidated financial position of the Company as 
of December 31, 2023 and 2022, and the consolidated results of its operations and its cash flows for the years then ended, in 
conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express 
an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered 
with  the  Public  Company  Accounting  Oversight  Board  (United  States)  (PCAOB)  and  are  required  to  be  independent  with 
respect  to  the  Company  in  accordance  with  the  U.S.  federal  securities  laws  and  the  applicable  rules  and  regulations  of  the 
Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the 
audit  to  obtain  reasonable  assurance  about  whether  the  consolidated  financial  statements  are  free  of  material  misstatement, 
whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal 
control  over  financial  reporting.  As  part  of  our  audits,  we  are  required  to  obtain  an  understanding  of  internal  control  over 
financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over 
financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, 
whether due to error or fraud, and performing procedures to respond to those risks. Such procedures included examining, on a 
test  basis,  evidence  regarding  the  amounts  and  disclosures  in  the  consolidated  financial  statements.  Our  audits  also  included 
evaluating  the  accounting  principles  used  and  significant  estimates  made  by  management,  as  well  as  evaluating  the  overall 
presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial 
statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or 
disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or 
complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated 
financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate 
opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Business Combination – Valuation of Acquired Property, Plant, and Equipment and Developed Technology Intangible Asset

As described in Notes 1 and 2 to the consolidated financial statements, in February 2023, the Company acquired 100% of the 
equity  of  the  subsidiaries  of  Arq  Ltd.  (the  “Arq  Acquisition”)  in  exchange  for  total  consideration  of  $31.2  million.  The 
Company  accounted  for  the  Arq  Acquisition  as  an  acquisition  of  a  business  and  recorded  the  assets  acquired  and  liabilities 
assumed at their respective fair values, including $39.2 million of property, plant, and equipment, and a $7.7 million developed 
technology intangible asset.

Management  estimated  the  fair  value  of  the  acquired  property,  plant  and  equipment  using  a  combination  of  valuation 
methodologies, including the cost and market approaches and the fair value of the developed technology intangible asset using 
an income approach. The significant assumptions used by management in determining the fair value of the acquired property, 
plant  and  equipment  primarily  included  estimated  replacement  costs  and  sales  prices  of  the  acquired  assets  as  well  as  the 
estimated useful lives of the acquired assets. The significant assumptions used by management in determining the fair value of 
the developed technology intangible asset included the Company’s best estimate of projected financial information, including 
revenues, growth rates, production ramp-up and capacity, and cost of revenue as well as discount and royalty rates. 

40

The principal considerations for our determination that performing procedures relating to the valuation of the acquired property, 
plant and equipment and developed technology intangible asset relating to the Arq Acquisition is a critical audit matter are (i) 
the  significant  judgment  by  management  when  determining  the  significant  assumptions  used  in  projecting  future  financial 
performance  of  the  acquired  business;  (ii)  especially  challenging  and  subjective  auditor  judgment  involved  when  performing 
procedures  and  evaluating  management’s  significant  assumptions  related  to  revenue  and  its  growth  rate,  production  ramp-up 
and capacity, and cost of revenue, and the discount and royalty rates utilized; and (iii) involving the use of professionals with 
specialized skill and knowledge. 

The primary procedures we performed to address this critical audit matter included:

– Obtaining and reading the Securities Purchase Agreement to develop an understanding of the Arq Acquisition.

–

–

–

Evaluating  management’s  process  for  determining  the  fair  value  of  the  acquired  property,  plant  and  equipment  and 
developed technology intangible asset, including the appropriateness of the valuation methods used. 

Testing the completeness and accuracy of the underlying data used in the valuation models.

Evaluating the reasonableness of the significant assumptions used by management related to projected financial 
information, which primarily related to production ramp-up and capacity, revenue growth, cost of revenues and the 
discount and royalty rates. Specifically, when evaluating the assumptions related to production ramp-up and capacity 
and revenue growth rates, we compared the assumptions to industry and market trends, along with updated 
management forecasts, to evaluate the reasonableness of management’s estimates as of the date of the transaction.

– Utilizing professionals with specialized skill and knowledge to assist in evaluating the appropriateness of the valuation 
models used and the reasonableness of certain significant assumptions including estimated replacement costs and sales 
prices as well as discount and royalty rates.

/s/ Moss Adams LLP 

Denver, Colorado
March 12, 2024 

We have served as the Company’s auditor since 2017.

41

Arq, Inc. and Subsidiaries
Consolidated Balance Sheets

(in thousands, except share data)
ASSETS

Current assets:
Cash
Receivables, net
Inventories, net
Prepaid expenses and other current assets

Total current assets

Restricted cash, long-term
Property, plant and equipment, net of accumulated depreciation of $19,293 and $11,897, 
respectively
Other long-term assets, net

Total Assets

LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:
Accounts payable and accrued expenses
Current portion of long-term debt
Other current liabilities

Total current liabilities

Long-term debt, net of current portion
Other long-term liabilities

Total Liabilities

Commitments and contingencies (Note 8)
Stockholders’ equity:
Preferred stock: par value of $.001 per share, 50,000,000 shares authorized, none outstanding
Common stock: par value of $.001 per share, 100,000,000 shares authorized, 37,791,084 and 
23,788,319 shares issued and 33,172,938 and 19,170,173 shares outstanding at December 31, 
2023 and 2022, respectively
Treasury stock, at cost: 4,618,146 and 4,618,146 shares as of December 31, 2023 and 2022, 
respectively
Additional paid-in capital
Retained earnings

Total stockholders’ equity
Total Liabilities and Stockholders’ equity

See Notes to the Consolidated Financial Statements.

As of December 31,

2023

2022

$ 

45,361  $ 
16,192 
19,693 
5,215 
86,461 
8,792 

66,432 
13,864 
17,828 
7,538 
105,662 
10,000 

94,649 
45,600 

34,855 
30,647 
$  235,502  $  181,164 

$ 

14,603  $ 
2,653 
5,792 
23,048 
18,274 
15,780 
57,102 

16,108 
1,131 
6,645 
23,884 
3,450 
13,851 
41,185 

— 

38 

— 

24 

(47,692)   
154,511 
71,543 
178,400 

(47,692) 
103,698 
83,949 
139,979 
$  235,502  $  181,164 

42

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Consolidated Statements of Operations

(in thousands, except per share data)
Revenue:

Consumables

Total revenue
Operating expenses:

Consumables cost of revenue, exclusive of depreciation and amortization
Payroll and benefits
Legal and professional fees
General and administrative
Depreciation, amortization, depletion and accretion
Gain on sale of Marshall Mine, LLC
Other

Total operating expenses
Operating loss
Other income, net:

Earnings from equity method investments
Interest expense
Other

Total other income, net
Loss before income tax expense
Income tax expense
Net loss
Loss per common share (Note 1):

Basic
Diluted

Weighted-average number of common shares outstanding:

Basic
Diluted

See Notes to the Consolidated Financial Statements.

Years Ended December 31,

2023

2022

$ 

99,183  $ 
99,183 

102,987 
102,987 

67,323 
15,154 
9,588 
12,641 
10,543 
(2,695)   
(36)   

112,518 
(13,335)   

1,623 
(3,014)   
2,630 
1,239 
(12,096)   
153 
(12,249)  $ 

80,465 
10,540 
9,455 
8,145 
6,416 
— 
34 
115,055 
(12,068) 

3,541 
(336) 
155 
3,360 
(8,708) 
209 
(8,917) 

(0.42)  $ 
(0.42)  $ 

(0.48) 
(0.48) 

29,104 
29,104 

18,453 
18,453 

$ 

$ 
$ 

43

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Consolidated Statements of Changes in Stockholders’ Equity

Common Stock

Treasury Stock

(in thousands, except share data)
Balances, January 1, 2022

Stock-based compensation

Repurchase of common shares 
to satisfy tax withholdings

Accrued dividends cancelled on 
common stock

Net loss

Balances, December 31, 2022

Issuance of common stock upon 
conversion of preferred stock

Issuance of common stock 
related to PIPE Investment, net 
of offering costs
Issuance of common stock 
pursuant to Arq Acquisition, net 
of offering costs
Stock-based compensation

Issuance of common stock to 
related party
Repurchase of common shares 
to satisfy tax withholdings

Issuance of warrant
Preferred stock dividends 
declared on redeemable 
preferred stock
Net loss

Balances, December 31, 2023

Shares

Amount

Shares

Amount

Additional 
Paid-in 
Capital

Retained 
Earnings/
(Accumulated 
Deficit)

Total Stockholders’
Equity

  23,460,212  $ 

23 

  (4,618,146)  $ (47,692)  $ 

102,106  $ 

92,864  $ 

389,312 

1 

(61,205) 

  — 

— 

— 

  — 

  — 

— 

— 

— 

— 

— 

— 

— 

— 

1,980 

(388) 

— 

— 

— 

— 

2 

(8,917) 

147,301 

1,981 

(388) 

2 

(8,917) 

  23,788,319  $ 

24 

  (4,618,146)  $ (47,692)  $ 

103,698  $ 

83,949  $ 

139,979 

5,362,926 

3,842,315 

3,814,864 

5 

4 

4 

572,056 

  — 

527,779 

1 

(117,175) 
— 

  — 
  — 

— 

— 

  — 

  — 

— 

— 

— 

— 

— 

— 
— 

— 

— 

— 

— 

— 

— 

— 

— 
— 

— 

— 

18,921 

15,216 

12,433 

2,648 

999 

(230) 
826 

— 

— 

— 

— 

— 

— 

— 

— 
— 

(157) 

(12,249) 

  37,791,084  $ 

38 

  (4,618,146)  $ (47,692)  $ 

154,511  $ 

71,543  $ 

See Notes to the Consolidated Financial Statements.

18,926 

15,220 

12,437 

2,648 

1,000 

(230) 
826 

(157) 

(12,249) 

178,400 

44

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Consolidated Statements of Cash Flows

(in thousands)
Cash flows from operating activities
Net loss
Adjustments to reconcile net loss to net cash used in operating activities:

Depreciation, amortization, depletion and accretion

Operating lease expense

Gain on sale of Marshall Mine, LLC

Stock-based compensation expense

Earnings from equity method investments

Amortization of debt discount and debt issuance costs

Other non-cash items, net

Changes in operating assets and liabilities:

Receivables and related party receivables

Prepaid expenses and other current assets

Inventories, net

Other long-term assets, net

Accounts payable and accrued expenses

Other current liabilities

Operating lease liabilities

Other long-term liabilities

Distributions from equity method investees, return on investment

Net cash used in operating activities

Cash flows from investing activities

Acquisition of property, equipment and intangible assets, net

Mine development costs

Cash and restricted cash acquired in acquisition of business

Payment for disposal of Marshall Mine, LLC

Distributions from equity method investees in excess of cumulative earnings
Proceeds from sale of property and equipment

Net cash used in investing activities

Years Ended December 31,

2023

2022

$ 

(12,249)  $ 

(8,917) 

10,543 

2,757 

(2,695)   

2,648 

(1,623)   

546 

(111)   

(2,264)   

4,777 

(2,571)   

(4,762)   

(12,061)   

(184)   

(168)   

764 

— 

(16,653)   

(27,516)   

(2,690)   

2,225 

(2,177)   
1,623 

— 

6,416 

2,709 

— 

1,981 

(3,541) 

— 

530 

1,169 

(876) 

(9,686) 

245 

(911) 

1,008 

1,521 

(6) 

2,297 

(6,061) 

(8,914) 

(583) 

— 

— 
3,636 

1,253 

(28,535)   

(4,608) 

45

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in thousands)
Cash flows from financing activities

Net proceeds from common stock issuance

Net proceeds from CFG Loan, related party, net of discount and issuance costs

Principal payments on finance lease obligations

Net proceeds from common stock issuance, related party

Principal payments on Arq Loan

Repurchase of shares to satisfy tax withholdings

Dividends paid

Net cash provided by (used in) financing activities

Decrease in Cash and Restricted Cash

Cash and Restricted Cash, beginning of year

Cash and Restricted Cash, end of year

Supplemental disclosure of cash flow information:

Cash paid for interest

Cash (received) paid for income taxes

Supplemental disclosure of non-cash investing and financing activities:

Equity issued as consideration for acquisition of business

Change in accrued purchases for property and equipment

Paid-in-kind dividend on Series A Preferred Stock

Acquisition of property and equipment under finance lease

See Notes to the Consolidated Financial Statements.

Years Ended December 31,

2023

2022

$ 

15,220  $ 

8,522 

— 

— 

(1,130)   

(1,246) 

1,000 

(473)   

(230)   

— 

22,909 
(22,279)   

76,432 

54,153  $ 

1,727  $ 

(1,697)  $ 

31,206  $ 

914  $ 

157  $ 

—  $ 

— 

— 

(388) 

(45) 

(1,679) 
(12,348) 

88,780 

76,432 

334 

3 

— 

532 

— 

1,641 

$ 

$ 

$ 

$ 

$ 

$ 

$ 

46

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Note 1 - Summary of Operations and Significant Accounting Policies

Nature of Operations  

Arq  Inc.  ("Arq"  or  the  "Company",  formerly  known  as  Advanced  Emissions  Solutions,  Inc.  ("ADES"))  is  a  Delaware 
corporation  with  its  principal  office  located  in  Greenwood  Village,  Colorado,  manufacturing,  mining  and  logistic  operations 
located in Louisiana and mining and manufacturing operations in Kentucky. 

The Company is an environmental technology company and is principally engaged in the sale of consumable air, water, and soil 
treatment  solutions  including  activated  carbon  ("AC")  and  chemical  technologies.  The  Company's  proprietary  AC  products 
enable customers to reduce air, water, and soil contaminants, including mercury, per and polyfluoroalkyl substances ("PFAS") 
and other pollutants, to help our customers meet the challenges of existing and pending air quality and water regulations. The 
Company  manufactures  and  sells  AC  and  other  chemicals  used  to  capture  and  remove  contaminants  for  coal-fired  power 
generation, industrial, municipal water and air, water, and soil treatment and remediation markets (collectively, the advanced 
purification technologies or "APT" market). 

In February 2023, the Company acquired 100% of the equity of the subsidiaries of Arq Limited (the "Arq Acquisition," and 
hereafter the Arq Limited subsidiaries referred to as "Legacy Arq") to secure access to a feedstock, a manufacturing facility and 
certain patented processes as a means to manufacture additional granular activated carbon ("GAC") products for sale into the 
APT  and  other  markets.  With  the  Arq  Acquisition,  the  Company  now  controls  bituminous  coal  waste  reserves  and  owns  a 
manufacturing  facility,  both  located  in  Corbin  Kentucky  (the  "Corbin  Facility"),  and  a  process  to  recover  and  purify  the 
bituminous coal fines for sale or further conversion to GAC products. Under this manufacturing process, the Company expects 
to be able to convert bituminous coal waste into a purified, microfine carbon powder known as Arq powderTM ("Arq Powder"). 
See further discussion of the Arq Acquisition in Note 2.

Principles of Consolidation 

The Consolidated Financial Statements include accounts of wholly-owned subsidiaries and variable interest entities ("VIEs") in 
which the Company is the primary beneficiary. All significant intercompany balances and transactions have been eliminated in 
consolidation. 

All investments in partially owned entities for which the Company has the ability to exercise significant influence and holds a 
20% or greater ownership interest based on the legal form of the Company's ownership percentage are accounted for using the 
equity  method  and  are  included  in  the  Other  long-term  assets,  net  line  item  in  the  Consolidated  Balance  Sheets.  As  of 
December 31, 2023, the Company holds equity interests of 42.5% and 50.0% in Tinuum Group, LLC ("Tinuum Group") and 
Tinuum Services, LLC ("Tinuum Services"), respectively.

Cash and restricted cash

Cash consists of cash on hand and bank deposits. Restricted cash is primarily comprised of posted cash collateral required under 
a surety bond contract related to a lignite mine in Louisiana (the "Five Forks Mine") and the Corbin Facility.

Concentration of credit risk

As  of  December  31,  2023,  the  Company  holds  cash  that  exceed  the  Federal  Deposit  Insurance  Corporation  ("FDIC")  limits 
(currently  $250  thousand)  at  two  financial  institutions.  If  a  financial  institution  was  unable  to  perform  its  obligations,  the 
Company would be at risk regarding the amount of cash held in excess of the FDIC limits.

Fair value measurements

The  carrying  amounts  of  our  cash,  restricted  cash,  accounts  receivable,  accounts  payable  and  other  current  liabilities 
approximate fair value as recorded due to the short-term nature of these instruments.

47

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Receivables, net

Receivables,  net  are  recorded  at  net  realizable  value,  which  includes  an  appropriate  allowance  for  estimated  uncollectible 
amounts to reflect any loss anticipated on the receivables. Increases and decreases in the allowance for doubtful accounts are 
established  based  upon  changes  in  the  credit  quality  of  receivables  and  are  included  as  a  component  of  the  General  and 
administrative  line  item  in  the  Consolidated  Statements  of  Operations.  The  allowance  for  doubtful  accounts  is  based  on 
historical  experience,  general  economic  conditions  and  the  credit  quality  of  specific  accounts  and  was  not  material  as  of 
December 31, 2023 and 2022.

Inventories, net

The cost of inventory is determined using the average cost method. Inventories, net are stated at the lower of average cost or net 
realizable value and consist principally of raw materials and finished goods related to the Company's AC products. Inventories 
are  periodically  reviewed  for  both  potential  obsolescence  and  potential  declines  in  anticipated  selling  prices.  The  Company 
makes assumptions about the future demand for and market value of the inventory and estimates the amount of any obsolete, 
unmarketable, slow moving or overvalued inventory. 

The composition of Inventories is included in Note 3. 

Intangible Assets 

Intangible assets consist of customer relationships, patents, and developed technology. 

The Company has developed technologies resulting in patents being granted by the U.S. Patent and Trademark Office or other 
regulatory  offices.  Legal  costs  associated  with  securing  the  patent  are  capitalized  and  amortized  over  the  legal  or  useful  life 
beginning on the patent filing date.

The following table details the components of the Company's intangible assets:

(in thousands, except years)
Customer relationships

Patents

Developed technology

Total

As of December 31,

2023

2022

Weighted 
Average 
Remaining 
Amortization 
Period (in years)

0.0

11.1

19.1

Cost 

Net of 
Accumulated 
Amortization

 Cost

Net of 
Accumulated 
Amortization

$ 

835  $ 

—  $ 

835  $ 

1,600 

8,307 

520 

7,379 

1,490 

607 

$ 

10,742  $ 

7,899  $ 

2,932  $ 

226 

456 

165 

847 

Included in the Consolidated Statements of Operations is amortization expense related to intangible assets of $0.8 million and 
$0.5  million  for  the  years  ended  December  31,  2023  and  2022,  respectively.  The  estimated  future  amortization  expense  for 
existing intangible assets as of December 31, 2023 is expected to be approximately $0.4 million for the year ended December 
31, 2024 and each of the four succeeding fiscal years.

Investments

The investments in entities in which the Company does not have a controlling interest (financial or operating), but where it has 
the ability to exercise significant influence over operating and financial policies, are accounted for using the equity method of 
accounting. Whether or not the Company exercises significant influence with respect to an investee depends on an evaluation of 
several  factors  including,  among  others,  representation  on  the  investee  company’s  board  of  directors  and  the  Company's 
ownership percentage. Under the equity method of accounting, an investee company’s financial statements are not consolidated 
in the Company’s Consolidated Balance Sheets and Consolidated Statements of Operations; however, the Company’s share of 
the earnings or losses of the investee is reported in the "Earnings from equity method investments" line item in the Consolidated 
Statements of Operations, and the Company’s carrying value in an equity method investee is reported in the "Other long-term 
assets, net" line in the Consolidated Balance Sheets. 

The Company recognizes equity earnings from equity method investments based on its percentage ownership in the investee. 
The  Company  recognizes  distributions  received  in  excess  of  the  carrying  value  of  an  equity  method  investment  as  equity 

48

 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

method earnings in the period the distributions occur to the extent that the Company has not guaranteed any obligations of the 
investee  or  is  not  contractually  required  to  provide  additional  funding  to  the  investee.  Subsequent  earnings  from  investees 
where the Company has recognized earnings from distributions in excess of the carrying value of the equity method investment 
are  recognized  for  the  excess  of  cumulative  earnings  over  previously  recognized  earnings  from  distributions.  Additionally, 
when  the  Company's  carrying  value  in  an  equity  method  investment  is  zero,  and  the  Company  has  not  guaranteed  any 
obligations of the investee or is not required to provide additional funding to the investee, the Company will not recognize its 
share  of  any  reported  losses  by  the  investee  until  future  earnings  are  generated  to  offset  previously  unrecognized  losses. 
Therefore,  equity  income  (loss)  reported  in  the  Company's  Consolidated  Statements  of  Operations  for  certain  equity  method 
investees  may  differ  from  a  mathematical  calculation  of  net  income  or  loss  attributable  to  its  equity  interest  based  on  the 
percentage ownership of the Company's equity interest and the net income or loss attributable to equity owners as shown in the 
investee's statements of operations. 

Distributions  from  equity  method  investees  are  reported  in  the  Consolidated  Statements  of  Cash  Flows  as  "return  on 
investment"  in  Operating  cash  flows  until  such  time  as  the  carrying  value  in  an  equity  method  investee  is  reduced  to  zero. 
Thereafter, such distributions are reported as "distributions in excess of cumulative earnings" in Investing cash flows.   

Investments  in  partially-owned  subsidiaries  for  which  the  Company  has  less  than  20%  ownership  are  accounted  for  in 
accordance with accounting guidance applicable to equity investments that do not qualify for the equity method of accounting. 
The Company evaluates these types of investments for changes in fair value and, if there is change, recognizes the change in the 
Consolidated Statement of Operations. If no such events or changes in circumstances have occurred related to these types of 
investments, the fair value is estimated only if practicable to do so.

Property, Plant and Equipment 

Property,  plant  and  equipment  are  stated  at  cost  less  accumulated  depreciation  and  include  leasehold  improvements. 
Depreciation  on  assets  is  computed  using  the  straight-line  method  over  the  lesser  of  the  estimated  useful  lives  of  the  related 
assets or the lease term (ranging from 1 to 31 years). Maintenance and repairs that do not extend the useful life of the respective 
asset are charged to operating expenses as incurred. When assets are retired, or otherwise disposed of, the property accounts are 
relieved of costs and accumulated depreciation and any resulting gain or loss is credited or charged to income. The Company 
periodically evaluates the recoverability of the carrying value of property, plant and equipment for impairment. Amortization of 
right of use assets under finance lease is included in depreciation expense and is calculated using the straight-line method over 
the term of the lease.

Leases

The Company records a right of use ("ROU") asset and related liability under a contract or part of a contract when it conveys 
the right to control the use of an identified asset for a period of time in exchange for consideration. Control over the use of an 
identified asset occurs when an entity has both the right to obtain substantially all of the economic benefits from the use of an 
identified asset and the right to direct the use of that identified asset. The determination of whether a contract contains a lease 
may require significant assumptions and judgments.

For all classes of underlying assets, the Company does not separate nonlease components from lease components and accounts 
for  each  separate  lease  component  and  the  nonlease  components  associated  with  that  lease  component  as  a  single  lease 
component. The Company records lease liabilities and related ROU assets for all leases that have a term of greater than one 
year. For short-term leases (leases with terms of less than one year), the Company expenses lease payments on a straight-line 
basis over the lease term.

Variable  lease  payments  represent  payments  made  by  a  lessee  for  the  right  to  use  an  underlying  asset  that  vary  because  of 
changes in facts or circumstances occurring after the commencement date of a lease other than the passage of time. Variable 
lease payments that are based on an index or rate, calculated by using the index or rate that exists on the lease commencement 
date, are included in the measurement of a lease liability. Certain of the Company’s operating leases for office facilities contain 
variable lease components that are not based on an index or rate, and the Company recognizes these payments as variable lease 
expense in the period in which the obligation for those payments is incurred. 

The  Company  calculates  lease  liabilities  based  on  the  present  value  of  lease  payments  discounted  by  the  rate  implicit  in  the 
lease or, if not readily determinable, the Company’s incremental borrowing rate.

Finance lease liabilities are subsequently measured by increasing the carrying amount to reflect interest expense on the finance 
lease liability and reducing the carrying amount of the lease liability to reflect lease payments made during the period. Interest 

49

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

on finance lease liabilities is determined in each period during the lease term as the amount that produces a constant periodic 
discount rate on the remaining balance of the lease liability. ROU assets under finance leases are amortized over the remaining 
lease  term  on  a  straight-line  basis.  Interest  expense  related  to  finance  lease  liabilities  and  amortization  of  ROU  assets  under 
finance  leases  are  included  in  the  "Interest  expense"  and  "Depreciation,  amortization,  depletion  and  accretion"  line  items, 
respectively, in the Consolidated Statements of Operations.

Operating lease liabilities are subsequently measured at the present value of the lease payments not yet paid, discounted using 
the discount rate for the lease established at the inception date of the lease. ROU assets under operating leases are subsequently 
measured at the amounts of the related operating lease liability, adjusted for, as applicable, prepaid or accrued lease payments, 
the  remaining  balance  of  any  lease  incentives  received,  unamortized  initial  direct  costs  and  impairment.  Lease  expense  from 
operating  leases  is  recognized  as  a  single  lease  cost  over  the  remaining  lease  term  on  a  straight-line  basis.  Variable  lease 
payments not included in operating lease liabilities are recognized as expense in the period in which the obligation for those 
payments is incurred. Lease expense from operating leases is included in the "General and administrative" and "Consumables 
Cost of revenue, excluding depreciation and amortization" line items in the Consolidated Statements of Operations.

Other Assets

Mine Development Costs

Mine  development  costs  are  related  to  the  Five  Forks  Mine  and  are  stated  at  cost  less  accumulated  depletion  and  include 
acquisition costs, the cost of other development work and mitigation costs. Costs are amortized over the estimated life of the 
related mine reserves, which as of December 31, 2023 is estimated to be 14 years. The Company performs an evaluation of the 
recoverability  of  the  carrying  value  of  mine  development  costs  to  determine  if  facts  and  circumstances  indicate  that  their 
carrying value may be impaired and if any adjustment is warranted. Mine development costs are reported in the "Other long-
term assets, net" line item in the Consolidated Balance Sheets.

Spare Parts

Spare parts include critical spares required to support plant operations. Parts and supply costs are determined using the lower of 
cost or estimated replacement cost. Parts are recorded as maintenance expenses or capitalized in the period in which they are 
consumed or put into use. Spare parts are reported in the "Other long-term assets, net" line item in the Consolidated Balance 
Sheets.

Revenue Recognition

The Company recognizes revenue from a contract with a customer when a performance obligation under the terms of a contract 
with  a  customer  is  satisfied,  which  is  when  the  customer  controls  the  promised  goods  or  services  that  are  transferred  in 
satisfaction of the performance obligation. Revenue is measured as the amount of consideration that is expected to be received 
in  exchange  for  transferring  goods  or  providing  services,  and  the  transaction  price  is  generally  fixed  and  generally  does  not 
contain  variable  or  noncash  consideration.  In  addition,  the  Company’s  contracts  with  customers  generally  do  not  contain 
customer  refund  or  return  provisions  or  other  similar  obligations.  Transfer  of  control  and  satisfaction  of  performance 
obligations are further discussed below.

The Company uses estimates and judgments in determining the nature and timing of satisfaction of performance obligations, the 
standalone selling price ("SSP") of performance obligations and the allocation of the transaction price to multiple performance 
obligations, if any.

The Company’s revenue component is Consumables.

Consumables

The Company is principally engaged in the sale of consumable products that utilize AC and chemical-based technologies to a 
broad range of customers, including coal-fired utilities, industrial and water treatment plants, and other diverse markets. The 
sale of consumable products is comprised of a single performance obligation and is recognized at the point in time when control 
transfers  and  the  Company's  obligation  has  been  fulfilled,  which  is  when  the  product  is  shipped  or  delivered  to  a  customer. 
Performance obligations for the sale of consumable products do not extend beyond one year.

50

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Certain  contracts  with  customers  require  the  customers  to  purchase  minimum  quantities  over  the  contractual  period  ("MQ 
Contracts").  Under  these  MQ  Contracts,  the  Company  reserves  the  right  to  bill  a  customer  for  any  shortfall  in  the  actual 
quantity purchases and minimum quantity purchases as of the end of the contractual period. The Company recognizes revenue 
on MQ Contracts based on the satisfaction of all three of the following criteria: (1) the likelihood of a customer not meeting its 
MQ contract obligations is probable, (2) the amount of the shortfall can be quantified and (3) the Company elects to exercise it 
right  to  enforce  the  billing  of  the  shortfall  at  some  point  during  the  contractual  period  through  a  billing  subsequent  to  the 
contractual period. The determination of when all three criteria are satisfied requires significant judgment. 

The Company performs shipping and handling activities through the use of third-party shippers and such activities occur prior 
to a customer obtaining control of goods. As such, the Company accounts for these activities as fulfillment activities and not as 
separate performance obligations. Shipping and handling costs incurred by the Company in delivering products to customers 
are billed to customers and are included in the transaction price and included in the "Revenue - Consumables" line item in the 
Consolidated Statements of Operations. Costs for shipping and handling activities incurred by the Company are included in the 
"Consumables  cost  of  revenue,  excluding  depreciation  and  amortization"  line  item  in  the  Consolidated  Statements  of 
Operations. 

Practical Expedients and Exemptions

The Company does not disclose the value of unsatisfied performance obligations for contracts with an original expected length 
of one year or less.

Sales and other taxes that are collected concurrently with revenue-producing activities are excluded from revenue.

The Company generally expenses sales commissions when incurred, as the amortization period of the asset that the Company 
would  have  recognized  is  one  year  or  less.  These  costs  are  recorded  in  sales  and  marketing  expenses  in  the  "General  and 
administrative" line item in the Consolidated Statements of Operations.

Consumables Cost of Revenue 

Consumables cost of revenue includes all labor, fringe benefits, subcontract labor, additive and coal costs, materials, equipment, 
supplies, travel costs and any other costs and expenses directly related to the Company’s production of revenue. 

License Royalties Payable to Tinuum Group

In  December  2022,  the  Company  and  Tinuum  Group  entered  into  an  agreement  (the  "Tinuum  Group  Royalty  Agreement") 
whereby the Company agreed to pay Tinuum Group a royalty (the "Tinuum Group Royalty") on sales of M-ProveTM to certain 
power  plants  where  Tinuum  Group  had  operated  refined  coal  facilities  (the  "M-45  Facilities")  prior  to  the  expiration  of  the 
Section 45 Tax Credit Program on December 31, 2021. Amounts due under the Tinuum Group Royalty Agreement commenced 
on  January  1,  2022.  The  Tinuum  Group  Royalty  is  calculated  based  on  "Net  Profit"  (as  defined  in  the  Tinuum  Royalty 
Agreement) on the Company's sales of M-ProveTM product to the M-45 Facilities. The Tinuum Group Royalty Agreement is for 
an initial term of five years with automatic renewals of five years unless the Company and Tinuum Group agree to terminate it. 
The Tinuum Group Royalty is included in Cost of revenue in the Consolidated Statements of Operations.

Payroll and Benefits

Payroll  and  benefits  costs  include  payroll  costs,  payroll  related  fringe  benefits  and  stock  based  compensation  expense  of 
research and development, sales and administrative personnel, but exclude such costs related to direct labor that are included in 
Cost of revenue. 

Payroll and benefits costs include direct payroll, personnel related fringe benefits, sales and administrative staff labor costs and 
stock compensation expense. Payroll and benefits costs exclude direct labor included in Cost of revenue. 

Legal and Professional

Legal and professional costs include external legal, audit and consulting expenses.

General and Administrative

General and administrative costs include director fees and expenses, rent, insurance and occupancy-related expenses, bad debt 
expense, impairments, research and development and other general costs of conducting business. 

51

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Research and Development

Research  and  development  costs  are  charged  to  expense  in  the  period  incurred  and  are  reported  within  the  "Payroll  and 
Benefits"  and  "General  and  administrative"  line  items  in  the  Consolidated  Statements  of  Operations.  For  the  years  ended 
December 31, 2023 and 2022, the Company recorded total research and development costs of $3.3 million and $2.1 million, 
respectively.

Asset Retirement Obligations

Asset retirement obligations ("ARO") are comprised of mine reclamation activities required under agreements related primarily 
to  the  Five  Forks  Mine  and  a  coal  waste  site  adjacent  to  the  Corbin  Facility  (the  "Corbin  ARO")  and  are  recognized  when 
incurred and recorded as liabilities at fair value. An ARO is accreted over time through periodic charges to earnings. An ARO 
asset  is  depreciated  over  its  estimated  remaining  life.  Accounting  for  AROs  requires  the  Company  to  estimate  future  costs 
unique  to  a  specific  mining  operation  that  the  Company  expects  to  incur  to  complete  the  reclamation  and  remediation  work 
required  to  comply  with  existing  laws  and  regulations.  AROs  are  periodically  adjusted  to  reflect  changes  in  the  estimated 
present value resulting from the passage of time and revisions to the estimates of either the timing or amount of the reclamation 
costs. On an annual basis, unless otherwise deemed necessary, the Company reviews its estimates and assumptions of its AROs.

Income Taxes

The Company accounts for income taxes under the asset and liability method, which requires the recognition of deferred tax 
assets  and  liabilities  for  the  expected  future  tax  consequences  of  events  that  have  been  included  in  the  financial  statements. 
Under this method, deferred income taxes are provided for temporary differences between the financial reporting basis and tax 
basis  of  the  Company's  assets  and  liabilities  and  are  tax-effected  using  enacted  tax  rates  in  effect  for  the  year  in  which  the 
temporary  differences  are  expected  to  reverse.  The  effect  of  a  change  in  tax  rates  on  deferred  tax  assets  and  liabilities  is 
recognized in operations in the period that includes the enactment date.

The Company maintains valuation allowances where it is more likely than not that all or a portion of deferred tax assets will not 
be  realized.  In  making  such  a  determination,  the  Company  considers  all  available  positive  and  negative  evidence,  including 
future reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results 
of recent operations. 

The Company records uncertain tax positions on the basis of a two-step process whereby (1) the Company determines whether 
it is more-likely-than-not that the tax positions will be sustained on the basis of the technical merits of the position and (2) for 
those tax positions that meet the more-likely-than-not recognition threshold, the Company recognizes the amount of tax benefit 
that is more than 50 percent likely to be realized upon ultimate settlement with the related tax authority.

Stock-Based Compensation

Stock-based compensation expense is measured at the grant date based on the estimated fair value of the stock-based award and 
is  generally  expensed  on  a  straight-line  basis  over  the  requisite  service  period  and/or  performance  period  of  the  award. 
Forfeitures  are  recognized  when  incurred.  Stock-based  compensation  expense  related  to  manufacturing  employees  and 
administrative  employees  is  included  in  the  "Consumables  Cost  of  revenue,  exclusive  of  depreciation  and  amortization"  
and  "Payroll  and  benefits"  line  items,  respectively,  in  the  Consolidated  Statements  of  Operations.  Stock-based  compensation 
expense  related  to  non-employee  directors  and  consultants  is  included  in  the  "General  and  administrative"  line  item  in 
the Consolidated Statements of Operations. 

Dividends

When a sufficient amount of available earnings exists at the time of a dividend declaration, dividends are charged to Retained 
earnings  when  declared.  If  a  sufficient  amount  of  available  earnings  is  not  available,  dividends  declared  are  charged  as  a 
reduction to Additional paid-in capital.

Earnings (Loss) Per Share

Basic earnings (loss) per share is computed using the weighted-average number of shares of common stock outstanding during 
the reporting period. Diluted earnings per share is computed in a manner consistent with that of basic earnings per share, while 
considering other potentially dilutive securities. The treasury stock method is used to determine the dilutive effect of potentially 
dilutive securities. 

52

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Potentially  dilutive  securities  consist  of  restricted  stock  awards  ("RSAs")  and  contingent  performance  stock  units  ("PSUs") 
(collectively,  "Potential  dilutive  shares").  Potential  dilutive  shares  are  excluded  from  diluted  earnings  (loss)  per  share  when 
their effect is anti-dilutive. When there is a net loss for a period, all Potential dilutive shares are anti-dilutive and are excluded 
from the calculation of diluted loss per share for that period.

Each PSU represents a contingent right to receive shares of the Company’s common stock, and the number of shares may range 
from zero to two times the number of PSUs granted on the award date depending upon the price performance of the Company's 
common  stock  as  measured  against  a  general  index  and  a  specific  peer  group  index  over  requisite  performance  periods.  The 
number of Potential dilutive shares related to a PSU is based on the number of shares of the Company's common stock, if any, 
that would be issuable at the end of the respective reporting period, assuming that the end of the reporting period is the end of 
the contingency period applicable to a PSU. See Note 12 for additional information related to PSUs.

The following table sets forth the calculations of basic and diluted earnings (loss) per common share:

(in thousands, except per share amounts)
Net loss

Basic weighted-average number of common shares outstanding

Add: dilutive effect of equity instruments

Diluted weighted-average shares outstanding

Loss per share - basic

Loss per share - diluted

Years Ended December 31,

2023

2022

$ 

(12,249)  $ 

(8,917) 

29,104 

— 

29,104 

$ 

$ 

(0.42)  $ 

(0.42)  $ 

18,453 

— 

18,453 

(0.48) 

(0.48) 

For  the  years  ended  December  31,  2023  and  2022,  1.7  million  and  0.6  million  weighted-average  equity  instruments, 
respectively, were outstanding but were not included in the computation of diluted earnings per share because their effect would 
have been anti-dilutive. 

Use of Estimates

The  preparation  of  the  Company’s  consolidated  financial  statements  in  conformity  with  accounting  principles  generally 
accepted in the United States ("GAAP") requires the Company’s management to make estimates and assumptions that affect the 
amounts  reported  in  these  financial  statements  and  accompanying  notes.  Actual  results  could  differ  from  those  estimates. 
Significant financial statement components in which the Company makes assumptions include: 

•

•

•

•

business combinations, including asset acquisitions;

the carrying value of its long-lived assets;

AROs; and 

income taxes, including the valuation allowance for deferred tax assets and assessment of uncertain tax positions.

Risks and Uncertainties

The Company is principally dependent on operations of its APT business and its cash on hand to provide liquidity over the near 
and  long  term.  The  Company's  revenue,  sales  volumes,  earnings  and  cash  flows  are  significantly  affected  by  prices  of 
competing  power  generation  sources  such  as  natural  gas  and  renewable  energy.  During  periods  of  low  natural  gas  prices, 
natural gas provides a competitive alternative to coal-fired power generation and therefore, coal consumption may be reduced, 
which in turn reduces the demand for the Company's products. However, during periods of higher prices for competing power 
generation  sources,  there  is  generally  an  increase  in  coal  consumption  and  thus  demand  for  the  Company's  products  also 
increases.

In  addition,  coal  consumption  and  demand  for  the  Company's  products  are  affected  by  the  demand  for  electricity,  which  is 
higher  in  the  warmer  and  colder  months  of  the  year.  As  a  result,  the  Company's  operating  results  are  subject  to  seasonal 
variations whereby its revenue and cost of revenue tend to be higher in its first and third fiscal quarters compared to its second 
and  fourth  fiscal  quarters.  Abnormal  temperatures  during  the  summer  and  winter  months  may  significantly  affect  coal 

53

 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

consumption  and  impurities  within  various  municipalities'  water  sources,  and  thus  impact  the  demand  for  the  Company's 
products.

Reclassifications

Certain balances have been reclassified from prior years to conform to the current year presentation. Such reclassifications had 
no effect on the Company’s results of operations or financial position in any of the periods presented.

Segments

Operating segments are defined as components of an enterprise about which separate financial information is available that is 
evaluated regularly by a company's chief operating decision maker ("CODM"), or a decision-making group, in deciding how to 
allocate  resources  and  in  assessing  financial  performance.  As  of  December  31,  2023,  the  Company's  CODM  was  the 
Company's Chief Executive Officer, and the Company concluded that it had one reportable segment. 

New Accounting Standards

Recently Adopted

Effective  January  1,  2023,  the  Company  adopted  ASU  2016-13,  Financial  Instruments  -  Credit  Losses  (Topic  326) 
Measurement of Credit Losses on Financial Instruments ("ASU 2016-13"). The main objective of ASU 2016-13 is to provide 
financial statement users with more decision-useful information about the expected credit losses on financial instruments and 
other  commitments  to  extend  credit  held  by  a  reporting  entity  at  each  reporting  date.  The  adoption  of  ASU  2016-13  did  not 
have a material impact on the Company's financial statements and disclosures.

Recently Issued

In  December  2023,  the  FASB  issued  Accounting  Standards  Update  2023-09,  Income  Taxes  (Topic  740):  Improvements  to 
Income  Tax  Disclosures.  ("ASU  2023-09").  ASU  2023-09  requires  entities  to  disclose:  (1)  consistent  categories  and  greater 
disaggregation  of  information  in  the  rate  reconciliation  and  (2)  the  disaggregation  of  income  taxes  paid  by  jurisdiction.  This 
update also makes several other changes to the income tax disclosure requirements. For public entities, the amendments in ASU 
2023-09 are effective for fiscal years beginning after December 15, 2024, with early adoption permitted, and is required to be 
applied  prospectively,  but  retrospective  application  is  permitted.  The  Company  is  currently  evaluating  the  impact  of  ASU 
2023-09 on its income tax disclosures. 

Note 2 - Arq Acquisition

On  February  1,  2023  (the  "Acquisition  Date"),  the  Company  entered  into  a  securities  purchase  agreement  (the  "Purchase 
Agreement") with Arq Ltd. for the Arq Acquisition in exchange for consideration (the "Purchase Consideration") totaling $31.2 
million  and  consisting  of  (i)  3,814,864  shares  of  the  Company's  common  stock,  par  value  $0.001  per  share  (the  "Common 
Stock"), valued at $12.4 million based on the closing price of the Common Stock on the Acquisition Date and (ii) 5,294,462 
shares of the Company's Series A Convertible Preferred Stock, par value $0.001 per share (the "Series A Preferred Stock" or the 
"Preferred Shares"), valued at $18.8 million. The Company also incurred $8.7 million in acquisition-related costs, which have 
been expensed as incurred.

Legacy Arq's principal location is in Corbin, Kentucky where it operates the Corbin Facility, which processes bituminous coal 
waste into Arq Powder and can be used as an alternative to oil or in-ground mined coal to produce a range of carbon products. 
With the completion of the Arq Acquisition, the Company intends to sell Arq Powder as a feedstock to produce high-quality 
AC  for  use  in  water  and  air  purification  markets.  The  Company  expects  to  begin  using  Arq  Powder  to  produce  granular 
activated carbon products by the end of 2024.

The Company accounted for the Arq Acquisition as an acquisition of a business. The total Purchase Consideration was $31.2 
million and was allocated to the acquired assets and assumed liabilities of Legacy Arq based on their estimated fair values as of 
the  Acquisition  Date.  The  Purchase  Consideration  was  comprised  of  the  fair  values  as  of  the  Acquisition  Date  of  3,814,864 
shares of Common Stock, valued at $12.4 million, and 5,294,462 Preferred Shares, valued at $18.8 million. The Company also 
incurred  $8.7  million  in  acquisition-related  costs,  which  were  expensed  as  incurred  and  included  in  the  "General  and 
administrative" and "Legal and professional fees" line items in the Statements of Operations. 

54

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The following table provides the final purchase price allocation to the assets acquired and liabilities assumed as of the date of 
the Arq Acquisition: 

(in thousands)
Fair value of assets acquired:
Cash
Prepaid expenses and other current assets
Restricted cash, long-term
Property, plant and equipment, net
Other long-term assets, net
Amount attributable to assets acquired

Fair Value of liabilities assumed:
Accounts payable and accrued expenses
Current portion of long-term debt
Other current liabilities
Long-term debt, net of current portion
Other long-term liabilities
Amount attributable to liabilities assumed

$ 

Purchase Price 
Allocation

1,411 
2,229 
814 
39,159 
11,717 
55,330 

9,806 
494 
103 
9,199 
4,523 
24,125 

Net assets acquired

$ 

31,205 

The following represents the intangible asset identified as part of the Arq Acquisition and which is included in "Other long-
term-assets, net" in the table above:

(in thousands)

Developed technology

Series A Preferred Stock

Amount

Weighted Average 
Useful Life (years)

$ 

7,700 

20

In connection with the issuance of the Series A Preferred Stock pursuant to the Purchase Agreement, the Company filed the 
Certificate  of  Designations  of  Preferred  Stock  for  the  Series  A  Preferred  Stock  (the  "Certificate  of  Designations")  with  the 
Secretary of State of the State of Delaware. Under the Certificate of Designations, 8.9 million preferred shares were designated 
as Series A Preferred Stock. 

On  June  13,  2023  (the  "Conversion  Date"),  the  Company's  stockholders  approved  the  conversion  of  all  of  the  outstanding 
shares of Series A Preferred Stock, including the "Escrow Shares," as defined below, and the corresponding issuance of shares 
of Common Stock. Upon such approval, each outstanding share of Series A Preferred Stock was automatically converted into 
the  number  of  shares  of  Common  Stock  described  below.  Each  share  of  Series  A  Preferred  Stock  was  deemed  to  have  an 
original  issue  price  of  $4.00  per  share  (the  "Original  Issue  Amount").  The  number  of  shares  of  Common  Stock  issued  upon 
conversion of each share of Series A Preferred Stock was equal to the product of (i) the sum of (A) the Original Issue Amount 
plus (B) an amount equal to the cumulative amount of the accrued and unpaid dividends on such share at such time divided by 
(ii) the Original Issue Amount, subject to adjustment.

Holders of the Series A Preferred Stock were entitled to receive cumulative dividends, which accrued quarterly on the last day 
of  each  applicable  quarter  (whether  or  not  declared  or  funds  for  their  payment  are  lawfully  available)  and  were  payable 
quarterly, in arrears, on the earlier to occur of (a) the date any dividend is paid to holders of Common Stock with respect to such 
quarter  and  (b)  30  days  after  the  end  of  each  quarter  (the  "Series  A  Quarterly  Dividend")  at  the  rate  per  share  of  Series  A 
Preferred Stock equal to the greater of (i) if the Company declared a cash dividend on the Common Stock with respect to such 
quarter, the amount of the cash dividend that would be received by a holder of Common Stock in which such share of Series A 
Preferred Stock would be convertible on the record date for such cash dividend and (ii) an annual rate (the "Rate") of 8.0% of 

55

 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

the Original Issue Amount compounded quarterly with respect to such quarter. 

On March 31, 2023, the Company declared a dividend of 68,464 Series A PIK Shares with respect to the accrued dividends on 
the Preferred Shares for the first quarter of 2023 (the "PIK Dividend"). The PIK Dividend was recorded at the estimated fair 
value of $0.2 million as of March 31, 2023 and was paid on April 21, 2023.

Of  the  total  Preferred  Shares  issued  in  the  Arq  Acquisition,  833,914  were  held  in  escrow  (the  "Escrow  Shares")  based  on  a 
contingent redemption feature, (the "Contingent Redemption Feature," as defined below). The fair value of the Preferred Shares 
issued was determined to be $3.46 per Preferred Share on the Acquisition Date (the ("Preferred Share Price") plus the value of 
the Contingent Feature related to the Escrow Shares. The Escrow Shares were converted into shares of Common Stock on the 
Conversion Date and continue to be held in escrow (the "Escrow Common Shares").

The Escrow Common Shares are being withheld pending a determination by the IRS that no tax withholding is required on the 
Purchase Consideration issued to Arq Ltd. (the "Arq Ltd. Tax Liability"). The Company estimated the fair value of the potential 
Arq  Ltd.  Tax  Liability  at  $3.3  million.  In  the  event  that  the  IRS  determines  that  no  withholding  is  required  by  Arq  Ltd.  in 
connection  with  the  Purchase  Consideration  received  by  Arq  Ltd.,  all  of  the  Escrow  Common  Shares  will  be  released  and 
delivered to Arq Ltd. In the event that the IRS determines that any amount of withholding is required by Arq Ltd., the Company 
has agreed to redeem a sufficient number of Escrow Common Shares to fund the required payment to the IRS, and that number 
of  Escrow  Common  Shares  will  be  returned  to  the  Company.  The  number  of  Escrow  Common  Shares  to  be  returned  to  the 
Company  is  equal  to  the  required  withholding  amount  divided  by  the  Original  Issue  Amount,  not  to  exceed  a  maximum  of 
833,914 Escrow Common Shares, and is equal to $3.3 million based on the Original Issue Amount (the "Maximum Contingent 
Redemption  Amount").  The  fair  value  of  the  Preferred  Escrow  Shares  was  determined  on  the  Acquisition  Date  and  was 
comprised of the Maximum Contingent Redemption Amount and the fair value of the non-escrowed Preferred Shares ("Non-
Preferred Escrow Shares").

The  Series  A  Preferred  Stock  contained  a  mandatory  redemption  feature  in  the  event  the  Preferred  Shares,  including  future 
issuances of Series A Preferred Stock issued under dividend requirements, were not converted into shares of Common Stock 
prior to February 1, 2028. The Company concluded that both the Escrow Shares and the Non Escrow Shares did not meet the 
definition of mandatorily redeemable financial instruments as there was a substantive conversion feature, and were therefore not 
classified  as  liabilities.  As  both  the  Escrow  Shares  and  Non  Escrow  Shares  represented  financial  instruments  that  were 
redeemable for cash, SEC guidance mandates that preferred securities which are redeemable upon the occurrence of an event 
that is not solely within the control of the issuer be classified outside of permanent equity as "temporary equity." Accordingly, 
the Company classified and reported the Series A Preferred Stock as temporary equity and in the Consolidated Balance Sheet as 
of as of the Acquisition Date. On the Conversion Date, all shares of Series A Preferred Stock were converted into 5,362,926 
shares of Common Stock, and the Company reclassified all of the Series A Preferred Stock to Common Stock as of June 30, 
2023. 

PIPE Investment 

On  February  1,  2023  and  pursuant  to  the  Arq  Acquisition,  the  Company  entered  into  Subscription  Agreements  with  certain 
persons (the "Subscribers"), which included existing shareholders of Arq Ltd., three of which were appointed to the Company's 
Board of Directors (the "Board"), pursuant to which the Subscribers subscribed for and purchased 3,842,315 shares of Common 
Stock  for  an  aggregate  purchase  price  of  $15.4  million  and  at  a  price  per  share  of  $4.00  (such  transaction,  the  "PIPE 
Investment").

56

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Unaudited Pro Forma Financial Information

The following represents the pro forma effects of the Arq Acquisition as if it had occurred on January 1, 2022. The pro forma 
net loss for each of the two years presented has been calculated after applying the Company’s accounting policies in effect for 
those  years.  In  addition,  pro  forma  net  loss  includes:  (1)  for  the  years  ended  December  31,  2023  and  2022,  increases  in 
depreciation  and  amortization  resulting  from  fair  value  adjustments  to  Property,  plant,  equipment  of  $0.2  million  and 
$0.1 million, respectively; (2) for the years ended December 31, 2023 and 2022, increases in amortization resulting from fair 
value adjustments to Intangibles of $0.1 million and $0.4 million, respectively; (3) for the year ended December 31, 2023 and 
2022, increases to interest expense for: (a) the issuance of the CFG Loan (as defined below) including stated interest and the 
amortization  of  the  CFG  Loan's  discount  and  issuance  costs  and  (b)  amortization  of  debt  discount  related  to  a  fair  value 
adjustment to the assumed CTB Loan (as defined below) of Arq of $0.2 million and $2.0 million, respectively; (4) the removal 
of  $1.9  million  of  Payroll  and  benefits  for  compensation  expense  payable  to  certain  Arq  employees  triggered  by  change  in 
control provisions in employment agreements, as well as in employee severance agreements, for the year ended December 31, 
2023 but included as additional Payroll and benefits expense for the year ended December 31, 2022; (5) for the years ended 
December  31,  2023  and  2022,  decreases  to  general  and  administrative  expenses  resulting  from  fair  value  adjustments  to 
operating  leases  acquired  of  $0.1  million  and  $0.5  million,  respectively,  and  (6)  for  the  year  ended  December  31,  2022,  the 
addition of $2.4 million of transaction costs incurred for the period from January 1, 2023 through the Arq Acquisition Date, 
together with the income tax effects on (1) through (6). Since Arq had no revenue for the years ended December 31, 2023 or 
2022, pro forma revenue is the same as the Company's reported revenue for those years. 

(in thousands)

Revenue

Net loss

Other

Years ended December 31,

2023

2022

$ 

$ 

99,183  $ 

(11,119)  $ 

102,987 

(75,788) 

The amounts of year to date revenue and net loss for Arq for the period from the Acquisition Date to December 31, 2023 are as 
follows:

(in thousands)

Revenue

Net loss

Note 3 - Inventories, net

Year ended December 31, 

2023

$ 

$ 

— 

(11,660) 

The following table summarizes the Company's inventories as of December 31, 2023 and 2022:

(in thousands)
Product inventory
Raw material inventory

As of December 31,

2023

2022

$ 

$ 

9,524  $ 
10,169 
19,693  $ 

9,479 
8,349 
17,828 

57

 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Note 4 - Property, Plant and Equipment

The cost basis and accumulated depreciation of property, plant and equipment at December 31, 2023 and 2022 are summarized 
in the table below:

(in thousands)
Land and land improvements
Plant and operating equipment
Furniture and fixtures
Machinery and equipment
Leasehold improvements
Construction in progress

Less accumulated depreciation
Total property, plant and equipment, net

1 Land Improvements have a useful life between 5 and 31 years.

Life in Years
5+1
3-29
1-19
3-10
12

As of December 31,

2023

2022

$ 

$ 

1,225  $ 
81,266 
1,765 
2,478 
2,149 
25,059 
113,942 
(19,293)   
94,649  $ 

1,225 
33,180 
1,709 
2,116 
2,149 
6,373 
46,752 
(11,897) 
34,855 

Included in plant and operating equipment as of December 31, 2023 and 2022 is mining equipment financed under various lease 
facilities, and obligations due under these facilities are included in long-term debt in the Consolidated Balance Sheets. The total 
amount recorded for ROU assets as of December 31, 2023 and 2022 related to finance lease obligations was $1.7 million and 
$2.6 million, respectively, net of accumulated depreciation of $2.7 million and $2.0 million. 

Depreciation expense for the years ended December 31, 2023 and 2022 was $8.5 million and $4.9 million, respectively. 

Note 5 - Revenue

For  the  years  ended  December  31,  2023  and  2022,  all  material  performance  obligations  related  to  revenue  recognized  were 
satisfied  at  a  point  in  time.  For  each  of  the  years  ended  December  31,  2023  and  2022,  approximately  8%,  respectively,  of 
Consumables revenue was generated in Canada, and all other revenue was generated in the U.S.

In accordance with its revenue recognition policy for MQ Contracts, in December 2023, the Company exercised its right under 
certain MQ Contracts and recognized $4.7 million of consumables revenue and recorded an unbilled receivable. 

Trade receivables 

Trade receivables represent an unconditional right to consideration in exchange for goods or services transferred to a customer. 
The Company invoices its customers in accordance with the terms of the contract. Credit terms are generally net 30 - 45 days 
from the date of invoice. The timing between the satisfaction of performance obligations and when payment is due from the 
customer is generally not significant. 

Contract assets

Contract assets are comprised of unbilled receivables from customers and are included in Receivables, net in the Consolidated 
Balance Sheets. Unbilled receivables represent a conditional right to consideration in exchange for goods or services transferred 
to a customer. 

The following table shows the components of the Company's Receivables, net: 

(in thousands)
Trade receivables, net

Unbilled receivables
Other

Receivables, net

As of December 31,

2023

2022

$ 

$ 

11,289  $ 
4,862 
41 
16,192  $ 

13,789 
— 
75 
13,864 

58

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Contract liabilities

Contract liabilities are comprised of deferred revenue, which represents an obligation to transfer goods or services to a customer 
for which the Company has received consideration from the customer and, if deliverable within one year or less, is included in 
"Other current liabilities" in the Consolidated Balance Sheets and, if deliverable outside of one year, is included in "Other long-
term liabilities" in the Consolidated Balance Sheets.

Note 6 - Debt Obligations

(in thousands)

December 31, 2023

December 31, 2022

As of

CFG Loan due February 2027, related party

$ 

10,000  $ 

CTB Loan due January 2036

Finance lease obligations

Unamortized debt discounts

Unamortized debt issuance costs

Less: Current maturities

Total long-term debt obligations

CFG Term Loan

9,527 

3,465 

22,992 

(815)   

(1,250)   

20,927 

(2,653)   

18,274  $ 

$ 

— 

— 

4,581 

4,581 

— 

— 

4,581 

(1,131) 

3,450 

As required under the Purchase Agreement, and on February 1, 2023 (the "Closing Date"), the Company, as borrower, certain 
of its subsidiaries, as guarantors, and CF Global ("CFG"), a related party, as administrative agent and lender (the "Lender"), 
entered into a term loan (the "CFG Loan") in the amount of $10.0 million, less original issue discount ("OID") of $0.2 million, 
upon  execution  of  a  Term  Loan  and  Security  Agreement  (the  "CFG  Loan  Agreement").  The  Company  received  net  cash 
proceeds of $8.5 million after deducting the OID and debt issuance costs of $1.3 million. 

The  CFG  Loan  Agreement  also  required  the  issuance  of  a  warrant  (the  "Warrant")  to  CFG  to  purchase  325,457  shares  of 
Common  Stock  (the  "Warrant  Shares"),  which  represented  1%  of  the  post-Arq  Acquisition  and  PIPE  Investment  (as  defined 
below) fully diluted share capital (as defined in the CFG Loan Agreement), at an exercise price of $0.01 per share. The Warrant 
has a term of 7 years and contains a cashless exercise provision. 

The Company allocated the cash proceeds of the CFG Loan Agreement to both the CFG Loan and the Warrant based on their 
relative fair values. The amount allocated to the Warrant was recorded as a debt discount and is amortized to interest expense 
over  the  term  of  the  CFG  Loan.  The  standalone  fair  value  of  the  CFG  Loan  was  based  on  a  comparison  of  borrowings  and 
associated  credit  ratings  consistent  with  those  of  the  Company.  The  Warrant  is  exercisable  for  $0.01  per  share,  and  the  fair 
value  is  deemed  to  be  equal  to  the  fair  value  of  the  underlying  shares.  Accordingly,  the  fair  value  of  the  Warrant  was 
determined as the number of shares issuable from the exercise of the Warrant (based on 1.0% of post-transaction fully diluted 
share capital, as defined in the Purchase Agreement) multiplied by the closing share price of the Company's common stock on 
the Acquisition Date.

The CFG Loan matures on February 1, 2027 and bears interest at a rate equal to either (a) Adjusted Term SOFR (subject to a  
1.00% floor and a cap of 2.00%) plus a margin of 9.00% paid in cash and 5.00% paid in kind or (b) Base Rate plus a margin of 
8.00% paid in cash and 5.00% paid in kind, which interest on the CFG Loan in each case shall be payable (or capitalized, in the 
case of in kind interest) quarterly in arrears. 

The  Company  may  prepay  the  CFG  Loan  at  any  time  subject  to  the  following  prepayment  premium:  (i)  prior  to  the  twelve 
month anniversary of the Closing Date, the Make-Whole Amount (as defined below), (ii) thereafter but prior to the thirty-six 
month anniversary of the Closing Date, 2.00% of the outstanding principal amount of the CFG Loan being repaid or prepaid or 
(iii) thereafter until the maturity date, 1.00% of the outstanding principal amount of the CFG Loan being repaid or prepaid. The 
"Make-Whole Amount," with respect to any repayment or prepayment, is (i) an amount equal to all required interest payable 
(except  for  currently  accrued  and  unpaid  interest)  on  the  aggregate  principal  amount  of  the  CFG  Loan  subject  to  such 

59

 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

prepayment  or  repayment  from  the  date  of  such  prepayment  or  repayment  through  but  excluding  the  date  that  is  the  first 
anniversary of the Closing Date calculated using an interest rate equal to (x) Adjusted Term SOFR for an interest period of one 
month in effect on the third U.S. Government Securities Business Day prior to such prepayment or repayment plus (y) 14.00% 
per  annum  and  assuming  all  interest  was  paid  in  cash,  plus  (ii)  a  prepayment  premium  of  2.00%  on  the  aggregate  principal 
amount of the CFG Loan subject to such prepayment or repayment.

The CFG Loan is secured by substantially all of the assets of the Company and its subsidiaries (including those acquired in the 
Arq  Acquisition,  but  excluding  those  pledged  as  collateral  (the  "Arq  Loan  Assets")  under  the  "CTB  Loan,"  as  defined  and 
described below), subject to customary exceptions. The CFG Loan Agreement includes, among others, the following covenants: 
(1) beginning with the first fiscal quarter after March 31, 2023 and as of the end of each fiscal quarter thereafter, the Company 
must maintain a minimum unrestricted cash balance of $5.0 million; (2) (x) as of December 31, 2023, for the fiscal year then 
ended, the Company must have a minimum annual revenue, on a consolidated basis, of $70.0 million, (y) as of December 31, 
2024,  for  the  fiscal  year  then  ended,  the  Company  must  have  a  minimum  annual  revenue,  on  a  consolidated  basis,  of  
$85.0  million  and  (z)  for  any  fiscal  year  thereafter,  the  Company  must  have  a  minimum  annual  revenue,  on  a  consolidated 
basis, of $100.0 million; (3) (x) as of December 31, 2024, for the fiscal year then ended, the Company must have a minimum 
Consolidated EBITDA of $3.0 million and (y) for any fiscal year thereafter, the Company must have a minimum Consolidated 
EBITDA of $16.0 million; and (4) beginning after the fiscal quarter ending September 30, 2023, during an LTV Trigger Period, 
Arq  must  not  exceed  a  loan  to  value  ratio  of  0.40:1.00  (based  on  the  consolidated  total  assets  of  the  Company  and  its 
subsidiaries, but excluding the Arq Loan Assets).

CTB Term Loan

As consideration in the Arq Acquisition, the Company assumed a term loan (the "CTB Loan") held by certain Arq subsidiaries, 
as  borrowers,  as  set  out  in  the  Arq  Loan  (the  "Arq  Subsidiaries")  held  by  Community  Trust  Bank  ("CTB")  in  the  principal 
amount  of    $10.0  million.  The  Company  recorded  the  CTB  Loan  on  the  Acquisition  Date  at  its  estimated  fair  value  of  $9.7 
million,  with  the  difference  of  $0.3  million  between  the  estimated  fair  value  and  the  principal  amount  recorded  as  a  debt 
discount and recognized as interest expense over the term of the CTB Loan.

The CTB Loan was originally entered into on January 27, 2021 and is comprised of two promissory notes (the "Notes"): (1) 
"Note A" in the principal amount of $8.0 million, which is guaranteed by the U.S. Department of Agriculture; and (2) "Note B" 
in the principal amount of $2.0 million. The Notes mature on January 27, 2036 and bear interest at 6.0% per annum through 
January 2026 and at the prime rate plus 2.75% thereafter. Beginning January 27, 2023 and for the balance of the term of the 
CTB Loan, the Arq Subsidiaries are required to make combined interest and principal payments monthly in the fixed amount of 
$0.1 million. Interest is computed and payable on the outstanding principal as of the end of the prior month and the balance of 
the fixed monthly payment amount is applied to the outstanding principal. The Notes carry a prepayment penalty of 3.0% of the 
outstanding principal if paid prior to January 27, 2024, 2.0% of the outstanding principal if paid prior to January 27, 2025 and 
1.0% of the outstanding principal if paid prior to January 27, 2026. Thereafter, the CTB Loan may be prepaid without penalty.

On June 2, 2023 (the "Amendment  Date"), certain of the Arq Subsidiaries, which included Corbin Project LLC, Arq Projects 
Holding Company LLC, Arq St. Rose LLC, Arq Corbin LLC and Arq Corbin Land LLC (collectively, the "Borrowers") and 
CTB entered into a loan modification agreement (the "CTB Loan Modification Agreement") to the CTB Loan, as amended by 
that  certain  letter  agreement  by  and  among  the  CTB  and  Borrowers  dated  January  21,  2022,  and  as  otherwise  amended, 
modified  and/or  extended  by  the  parties  from  time  to  time  (collectively,  the  "CTB  Loan  Agreement").  As  consideration  for 
CTB entering into the CTB Loan Modification Agreement, the Borrowers agreed to pay a fee of $50,000 plus additional fees 
incurred by CTB and were required to deposit an additional $0.7 million into a deposit account (the "Interest Reserve Account" 
as defined in the CTB Loan Agreement), where the Interest Reserve Account is held as collateral by CTB. The Borrowers may 
withdraw  funds  from  the  Interest  Reserve  Account  beginning  one  year  from  the  Amendment  Date,  subject  to  restrictions  as 
stated in the CTB Loan Modification Agreement.

The CTB Loan Modification Agreement clarified and modified certain terms under the CTB Loan Agreement. The principal 
clarifications and modifications are as follows:

•

•

The Borrowers are not entitled to any further disbursements of proceeds under those promissory notes described in the 
CTB Loan Modification Agreement;

CTB agreed to waive certain financial delivery requirements for fiscal years 2021 and 2022;

60

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

•

•

•

CTB  agreed  to  waive  certain  required  financial  covenants  required  as  of  December  31,  2022  and  certain  required 
financial covenants as of December 31, 2023;

The Borrowers were required to establish their operating bank accounts with CTB no later than September 30, 2023; 
and

CTB  is  authorized  to  amend  and/or  amend  and  restate  its  then-current  security  instruments  to  include  additional 
collateral represented by the Borrowers' acquisition of any equipment or other fixed and/or operating assets in which 
CTB does not then hold a lien or security interest.

The CTB Loan is secured by substantially all assets of the Borrowers and includes among others, the following covenants with 
respect  to  the  Borrowers,  which  are  tested  annually  (Capitalized  terms  are  defined  in  the  CTB  Loan  Agreement):  (a)  Total 
Indebtedness to Net Worth greater than 4 to 1; (b) Balance Sheet Equity greater than or equal to 20% of the book value of all 
assets of the Borrowers; (c) (i) net income plus interest, taxes, depreciation and amortization divided by (ii) interest expense 
plus current maturities on long-term debt  greater than or equal to 1.25 to 1.

The  carrying  value  of  our  long-term  debt  under  the  CFG  Loan  and  CTB  Loan  approximates  its  fair  value  because  it  bears 
interest at rates indexed to market rates.

Note 7 - Leases

The Company's operating and finance lease right-of-use ("ROU") assets and liabilities as of December 31, 2023 and 2022 
consisted of the following items (in thousands): 

(in thousands)

Leases

Operating Leases
Operating lease right-of-use assets, net of accumulated amortization (1)

Operating lease obligations, current

Long-term operating lease obligations

Total operating lease obligation

Finance Leases
Finance lease right-of-use assets, net of accumulated amortization (2)

Finance lease obligations, current

Long-term finance lease obligations

Total finance lease obligations

As of

December 31, 2023

December 31, 2022

$ 

$ 

$ 

$ 

$ 

$ 

10,592  $ 

1,944  $ 

8,870 

10,814  $ 

1,694  $ 

2,131  $ 

1,334 

3,465  $ 

7,734 

2,724 

5,133 

7,857 

2,565 

1,131 

3,450 

4,581 

(1) Operating lease assets are reported net of accumulated amortization of $5.1 million and $4.4 million as of December 31, 2023 and 2022, 

respectively. 

(2) Finance lease assets are reported net of accumulated amortization of $2.7 million and $2.0 million as of December 31, 2023 and 2022, 

respectively.

Finance leases

ROU assets under finance leases are reported in the "Property, plant and equipment" line item, and finance lease liabilities are 
included in the "Current portion of long-term debt" and "Long-term debt, net of current portion" line items in the Consolidated 
Balance Sheets as of December 31, 2023 and 2022. 

61

 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Interest  expense  related  to  finance  lease  liabilities  and  amortization  of  ROU  assets  under  finance  leases  are  included  in  the 
"Interest  expense"  and  "Depreciation,  amortization,  depletion  and  accretion"  line  items  respectively,  in  the  Consolidated 
Statement of Operations for the years ended December 31, 2023 and 2022. 

Operating leases

ROU  assets  under  operating  leases  are  included  in  the  "Other  long-term  assets"  line  item,  and  operating  lease  liabilities  are 
included in "Other liabilities" and "Other long-term liabilities" line items, respectively, in the Consolidated Balance Sheets as of 
December 31, 2023 and 2022.

Lease expense for operating leases for the year ended December 31, 2023 was $5.9 million, of which $4.5 million is included in 
"Consumables cost of revenue, exclusive of depreciation and amortization" line item and $1.4 million is included in "General 
and  administrative"  line  item  in  the  Consolidated  Statement  of  Operations  for  the  year  ended  December  31,  2023.  Lease 
expense for operating leases for the year ended December 31, 2022 was $4.4 million, of which $4.0 million is included in the 
"Consumables  cost  of  revenue,  exclusive  of  depreciation  and  amortization"  line  item  and  $0.4  million  is  included  in  the 
"General and administrative" line item in the Consolidated Statement of Operations for the year ended December 31, 2022.

Lease financial information as of and for the years ended December 31, 2023 and 2022 is provided in the following table:

(in thousands)

Finance lease cost:

Amortization of right-of-use assets

Interest on lease liabilities

Operating lease cost

Short-term lease cost
Variable lease cost (1)
Total lease cost

Other Information:

Year ended December 31,

2023

2022

$ 

$ 

714 

258 

4,035 

1,642 

231 

818 

307 

3,436 

989 

19 

$ 

6,880 

$ 

5,569 

Cash paid for amounts included in the measurement of lease liabilities:

Operating cash flows from finance leases

Operating cash flows from operating leases

Financing cash flows from finance leases

Right-of-use assets obtained in exchange for new finance lease liabilities

Right-of-use assets obtained in exchange for new operating lease liabilities

Weighted-average remaining lease term - finance leases

Weighted-average remaining lease term - operating leases

Weighted-average discount rate - finance leases

Weighted-average discount rate - operating leases
(1) Primarily includes common area maintenance, property taxes and insurance payable to lessors.

$ 

$ 

$ 

$ 

$ 

258 

2,887 

1,130 

— 

2,719 

$ 

$ 

$ 

$ 

$ 

1.8 years

7.6 years

 5.9 %

 11.3 %

307 

2,923 

1,246 

1,641 

4,444 

2.8 years

4.1 years

 5.9 %

 6.9 %

62

 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The following table summarizes the Company's future lease payments under finance and operating leases as of December 31, 
2023:

(in thousands)
2024

2025

2026

2027

2028

Thereafter

Total lease payments

Less: Imputed interest

Present value of lease payments

Note 8 - Commitments and Contingencies 

Surety Bonds and Restricted Cash

Operating
Lease
Commitments

Finance
Lease
Commitments

Total Lease 
Commitments

$ 

3,139  $ 

2,274  $ 

2,930 

2,817 

1,464 

1,131 

7,078 

935 

372 

85 

— 

— 

18,559 

(7,745)   

10,814  $ 

3,666 

(201)   

3,465  $ 

$ 

5,413 

3,865 

3,189 

1,549 

1,131 

7,078 

22,225 

(7,946) 

14,279 

As the owner of the Five Forks Mine, the Company is required to post a surety bond with a regulatory commission related to 
performance requirements associated with the Five Forks Mine. As of December 31, 2023, the amount of this surety bond was 
$7.5 million. 

The Company leases land adjacent to the Corbin Facility and is required to post surety bonds with a regulatory commission for 
reclamation. As of December 31, 2023, the amount of these surety bonds was $3.0 million.

The Company holds permits for an abandoned mine in West Virginia ("Mine 4") and is required to post a surety bond with a 
regulatory commission for reclamation. As of December 31, 2023, the amount of this surety bond was $0.7 million.

As  of  December  31,  2023  and  2022,  the  Company  posted  cash  collateral  of  $8.5  million  and  $10.0  million,  respectively,  as 
required by the Company's surety bond providers, which is reported as long-term restricted cash in the Consolidated Balance 
Sheets.  As  of  December  31,  2023,  the  Company  holds  a  deposit  of  $0.4  million  with  a  third  party  for  collateral  as  required 
under a bonding arrangement for Mine 4. This deposit is included in "Other long-term assets, net" in the Consolidated Balance 
Sheet as of December 31, 2023. 

The  Company  has  a  customer  supply  agreement,  which  was  renewed  January  1,  2024,  that  requires  the  Company  to  post  a 
performance bond in an amount equal to the annual contract value of $3.7 million.  

Red River Plant Construction Contract

In January 2024, the Company executed a contract with a third-party contractor for the construction of a GAC facility at the 
Red River Plant, and immediately commenced construction operations. The Company expects to complete the GAC Facility by 
the end of 2024 and estimates that total construction costs will be in the range of $62.0 - $67.0 million. 

63

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Tinuum Group

The  Company  also  has  certain  limited  obligations  contingent  upon  future  events  in  connection  with  the  activities  of  Tinuum 
Group. The Company, NexGen Refined Coal, LLC ("NexGen") and two entities affiliated with NexGen have provided another 
Tinuum Group owner with limited guarantees (the "Tinuum Group Party Guarantees") related to certain losses it may suffer as 
a result of inaccuracies or breach of representations and covenants. The Company also is a party to a contribution agreement 
with NexGen under which any party called upon to pay on a Tinuum Group Party Guaranty is entitled to receive contribution 
from the other party equal to 50% of the amount paid. No liability or expense provision has been recorded by the Company 
related to this contingent obligation as the Company believes that it is not probable that a loss will occur with respect to Tinuum 
Group Party Guarantees.

In December 2022, the Company, certain of the other owners of Tinuum Group (collectively, the "Tinuum Group Owners") and 
Tinuum  Group  executed  the  Distribution  and  Repayment  Agreement  (the  "Repayment  Agreement").  Under  the  terms  of  the 
Repayment Agreement, the Tinuum Group Owners received cash distributions (the "Distributions") equal to their percentage 
ownership  and  also  agreed  to  be  contractually  liable  for  certain  contingent  liabilities  of  Tinuum  Group  (the  "Tinuum  Group 
Obligation") in amounts equal to their percentage ownership. In December 2022, the Company received its percentage share of 
the  Distributions  in  the  amount  of  $2.0  million  and  became  contractually  liable  for  $1.7  million  of  the  Tinuum  Group 
Obligation.  As  of  December  31,  2022,  the  Company  recorded  the  contractual  obligation  of  $1.7  million  as  a  liability  in  the 
"Other current liabilities" line item in the Consolidated Balance Sheet, with the difference between the cash distribution of $0.3 
million  recorded  to  equity  method  earnings  for  the  year  ended  December  31,  2022.  In  the  event  that  the  Tinuum  Group 
Obligation  is  discharged  in  its  entirety  or  settled  for  an  amount  that  is  less  than  the  total  Tinuum  Group  Obligation,  the 
Company will recognize future equity earnings for the difference in its contractual obligation amount and its pro rata share of 
the actual payment made by Tinuum Group, if any, for the Tinuum Group Obligation.

Marken Separation Agreement

Pursuant to Mr. Marken's termination as CEO of the Company effective July 17, 2023, the Company and Mr. Marken executed 
a separation agreement under which Mr. Marken will receive the following payments and benefits: (i) the severance payments 
and benefits set forth in the terms of his employment agreement upon a termination without "cause," (ii) accelerated vesting of 
49,715  shares  of  restricted  stock,  (iii)  continued  eligibility  for  possible  vesting  of  a  pro  rata  target  number  of  25,941 
performance share units ("PSUs") granted in 2021, subject to achievement of applicable performance measures, (iv) continued 
eligibility for possible vesting of a pro rata target number of 15,988 PSUs granted in 2022, subject to achievement of applicable 
performance measures, and (v) continued eligibility for possible vesting of a pro rata target number of 19,834 PSUs granted in 
2023, subject to achievement of applicable performance measures. As of December 31, 2023, the amount of the liability related 
to (i) and (ii) above was $0.4 million.

Legal Proceedings

The Company is from time to time subject to various pending or threatened legal actions and proceedings, including those that 
arise in the ordinary course of its business. Such matters are subject to many uncertainties and outcomes, the financial impacts 
of which are not predictable with assurance and that may not be known for extended periods of time. The Company records a 
liability in its consolidated financial statements for costs related to claims, settlements, and judgments where management has 
assessed that a loss is probable and an amount can be reasonably estimated. There were no significant legal proceedings as of 
December 31, 2023.

Note 9 - Marshall Mine, LLC

On March 27, 2023, (the "MM Closing Date"), the Company completed the sale of all of its membership interests in Marshall 
Mine, LLC to a third party (the "Buyer") in exchange for cash payment of $2.2 million (the "MM Purchase Price") made by the 
Company to the Buyer and the assumption by the Buyer of certain liabilities of Marshall Mine, LLC. As of the MM Closing 
Date, Marshall Mine, LLC had outstanding liabilities of approximately $4.9 million that were discharged upon payment of the 
MM Purchase Price by the Company, and the Company recognized a gain of approximately $2.7 million in the Statement of 
Operations for the year ended December 31, 2023.

64

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Note 10 - Supplemental Financial Information

Supplemental Balance Sheet Information 

The following table summarizes the components of "Prepaid expenses and other current assets" and "Other long-term assets, 
net" as presented in the Consolidated Balance Sheets:

(in thousands)
Prepaid expenses and other current assets:

Prepaid expenses

Prepaid income taxes and income tax refunds

Other

Other long-term assets:

Right of use assets, operating leases, net

Spare parts, net
Upfront customer consideration (1)
Mine reclamation asset, net

Intangible assets, net

Mine development costs, net

Other long-term assets

As of December 31,

2023

2022

$ 

$ 

$ 

2,430  $ 

349 

2,436 

5,215  $ 

10,592  $ 

9,147 

5,967 

1,955 

7,899 

7,377 

2,663 

2,570 

2,573 

2,395 

7,538 

7,734 

6,789 

6,475 

1,641 

847 

5,478 

1,683 

$ 

45,600  $ 

30,647 

(1) Represent remaining balance on consideration paid to a customer under a long-term supply contract executed in 2020. This asset is being 

amortized as a reduction to revenue on a straight-line basis over the expected 15-year contractual period of the contract.

Spare parts include critical spares required to support plant operations. Parts and supply costs are determined using the lower of 
cost or estimated replacement cost. Parts are recorded as maintenance expenses or capitalized in the period in which they are 
consumed or put into use.

Mine development costs include acquisition costs, the cost of other development work and mitigation costs related to the Five 
Forks  Mine  and  are  depleted  over  the  estimated  life  of  the  related  mine  reserves,  which  is  estimated  to  be  14  years  as  of 
December  31,  2023.  The  Company  performs  an  evaluation  of  the  recoverability  of  the  carrying  value  of  mine  development 
costs  to  determine  if  facts  and  circumstances  indicate  that  their  carrying  value  may  be  impaired  and  if  any  adjustment  is 
warranted. Mine reclamation asset represents the ARO asset related to the Five Forks Mine and is depreciated over its estimated 
life.

Highview Investment 

Other includes a long-term investment (the "Highview Investment") in Highview Enterprises Limited ("Highview"), a London, 
England  based  developmental  stage  company  specializing  in  power  storage.  The  Company  accounts  for  the  Highview 
Investment as an investment recorded at cost, less impairment, plus or minus observable changes in price for identical or similar 
investments of the same issuer. Fair value measurements, if any, represent Level 2 measurements. The Highview Investment is 
evaluated for indicators of impairment such as an event or change in circumstances that may have a significant adverse effect 
on the fair value of the investment.

There were no changes to the carrying value of the Highview Investment for the years ended December 31, 2023 and 2022 as 
there were no indicators of impairment or observable price changes for equity issued by Highview. Since inception of Highview 
Investment, the Company has recognized $2.2 million of cumulative impairment losses.

65

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The following table details the components of "Other current liabilities" and "Other long-term liabilities" as presented in the 
Consolidated Balance Sheets: 

(in thousands)
Other current liabilities:

Current portion of operating lease obligations

Sales, use and other taxes payable

Current portion of mine reclamation liability
Other current liabilities (1)

Other long-term liabilities:

Mine reclamation liabilities

Operating lease obligations, long-term

Other

As of December 31,

2023

2022

$ 

1,944  $ 

948 

182 

2,718 

5,792  $ 

5,981  $ 

8,870 

929 
15,780  $ 

$ 

$ 

$ 

2,724 

1,039 

548 

2,334 

6,645 

7,985 

5,133 

733 
13,851 

(1) Included in Other current liabilities as of December 31, 2023 and 2022 is $1.7 million related to the Repayment Agreement as defined in 
Note 15.

The Mine reclamation liabilities represent AROs. Changes in the AROs were as follows: 

(in thousands)
Asset retirement obligations, beginning of year
Asset retirement obligations assumed (1)
Accretion
Liabilities settled (2)
Changes due to scope and timing of reclamation

Asset retirement obligations, end of year

Less current portion

Asset retirement obligations, long-term

As of December 31,

2023

2022

$ 

8,533  $ 

1,500 

582 

9,959 

— 

611 

(4,866)   

(2,071) 

414 

6,163 

182 

$ 

5,981  $ 

34 

8,533 

548 

7,985 

(1) Represents the Corbin Facility ARO and Mine 4 ARO in the amounts of $0.5 million and $1.0 million, respectively.

(2) Includes the removal of a reclamation liability associated with  Marshall Mine, LLC as a result of its sale to a third party in March 2023.

Supplemental Consolidated Statements of Operations Information

The following table details the components of "Interest expense" in the Consolidated Statements of Operations: 

(in thousands)

Interest on CFG Loan

Interest on CTB Loan

Other

Total Interest expense

Years Ended December 31,

2023

2022

$ 

$ 

2,029  $ 

545 

440 
3,014  $ 

— 

— 

336 
336 

66

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The following table details the components of "Other" in the Consolidated Statements of Operations: 

(in thousands)

Interest income

Other

Total Other income

Note 11 - Stockholders' Equity

Years Ended December 31,

2023

2022

$ 

$ 

1,846  $ 

784 

2,630  $ 

239 

(84) 

155 

The Company has two classes of capital stock authorized, common stock and preferred stock, which are described as follows: 

Preferred Stock

The Company's Board of Directors (the "Board") is authorized to provide out of the unissued shares of Preferred Stock and to 
fix the number of shares constituting a series of Preferred Stock and, with respect to each series, to fix the number of shares and 
designation of such series, the voting powers, if any, the preferences and relative, participating, option or other special rights, if 
any, and any qualifications, limitations or restrictions thereof, of the shares of such series. As of December 31, 2023 and 2022, 
there were no shares of Preferred Stock designated or outstanding. 

Common Stock

Holders  of  common  stock  are  entitled  to  one  vote  for  each  share  held  of  record  on  all  matters  submitted  to  a  vote  of  the 
stockholders.  Additionally,  holders  of  common  stock  are  entitled  to  receive  dividends  when  and  if  declared  by  the  Board, 
subject to any statutory or contractual restrictions on payment of dividends and to any restrictions on the payment of dividends 
imposed by the terms of any outstanding shares of preferred stock. 

Upon dissolution, liquidation or the sale of all or substantially all of the Company's assets, after payment in full of any amounts 
required to be paid to creditors and to the holders of preferred stock having liquidation preferences, if any, the holders of shares 
of common stock will be entitled to receive the Company's remaining assets for distribution on a pro rata basis. 

Equity Transactions

As discussed in Note 2: 

•

•

•

On February 1, 2023, and as consideration for the Arq Acquisition, the Company issued 3,814,864 shares of common 
stock and 5,294,462 shares of Series A Preferred Stock. Additionally, the Company completed the PIPE Investment 
and sold 3,842,315 shares of common stock for cash proceeds of  $15.4 million.

On  March  31,  2023,  the  Company  declared  a  dividend  of  68,464  Series  A  PIK  Shares  with  respect  to  the  accrued 
dividends on the Series A Preferred Stock, which was recorded at the estimated fair value of $0.2 million as of March 
31, 2023 and was paid on April 21, 2023.

On  June  13,  2023,  pursuant  to  stockholder  approval,  all  shares  of  Series  A  Preferred  Stock  were  converted  into 
5,362,926 shares of common stock.

On July 14, 2023, the Board appointed Mr. Robert Rasmus to the positions of President and Chief Executive Officer effective 
July 17, 2023. On July 17, 2023, the Company entered into a Subscription Agreement (the "Subscription Agreement") with Mr. 
Rasmus  and  entities  controlled  by  Mr.  Rasmus,  in  connection  with  his  appointment  as  the  Company’s  President  and  Chief 
Executive Officer. Pursuant to the Subscription Agreement, Mr. Rasmus subscribed for and agreed to purchase 950,000 shares 
of  common  stock  from  the  Company  for  an  aggregate  purchase  price  of  $1.8  million  (at  a  price  per  share  of  approximately 
$1.90).  In  September  2023,  the  Company  received  cash  of  $1.0  million  and  issued  527,779  shares  of  common  stock  to  Mr. 
Rasmus pursuant to the Subscription Agreement.

Stock Repurchase Programs

In November 2018, the Board authorized the Company to purchase up to $20.0 million of its outstanding common stock under a 
stock repurchase program (the "Stock Repurchase Program"). In November 2019, the Board authorized an incremental $7.1 
million to the Stock Repurchase Program and provided that it will remain in effect until all amounts are utilized or it is 

67

 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

otherwise modified by the Board. As of December 31, 2023, the Company had $7.0 million remaining under the Stock 
Repurchase Program.

Note 12 - Stock-Based Compensation

On May 16, 2022, the Company's stockholders approved the 2022 Omnibus Incentive Plan (the "2022 Plan"), which permits 
grants  of  awards  to  employees,  directors  and  consultants.  Awards  may  be  in  the  form  of  options  (both  nonqualified  stock 
options and incentive stock options), stock appreciation rights, restricted stock, restricted stock units, performance share units, 
and other stock-based awards and cash-based awards as described under the 2022 Plan. As of December 31, 2023, the Company 
has 190,281 shares of its common stock authorized for issuance under the 2022 Plan. 

On June 20, 2017, the Company's stockholders approved the 2017 Omnibus Incentive Plan (the "2017 Plan"), which permits 
grants of awards to employees, directors and non-employees. Awards may be in the form of shares, rights to purchase restricted 
stock, bonuses of restricted stock, or other rights or benefits as described under the 2017 Plan. As of December 31, 2023, the 
Company has zero shares of its common stock authorized for issuance under the 2017 Plan. 

Expense

RSAs - Restricted Stock Awards ("RSA's") are typically granted with vesting terms of three years. The fair value of RSAs is 
determined based on the closing price of the Company’s common stock on the authorization date of the grant multiplied by the 
number of shares subject to the stock award. Compensation expense for RSAs is generally recognized over the vesting term on 
a straight-line basis.  

PSUs  -  Performance  share  units  ("PSU's")  generally  vest  over  three  years  and  are  based  on  the  grantee’s  continuous  service 
with the Company, performance measures or a combination of both. Each PSU represents a contingent right to receive shares of 
the Company’s common stock if the Company meets certain performance measures over the requisite period. 

Compensation expense is recognized for PSU awards on a straight-line basis over the vesting period based on the estimated fair 
value at the date of grant using a Monte Carlo simulation model. The Company's Monte Carlo simulation models include the 
following assumptions:

•

•

•

•

Risk-free interest rate - The risk-free interest rate for PSUs granted during the period was determined by using a zero-
coupon, U.S. Treasury rate for the periods that coincided with the expected terms listed above.

Dividends  -  As  the  PSUs  granted  receive  dividend  equivalent  units,  no  discount  was  applied  for  any  dividends 
declared.

Expected  volatility  -  To  calculate  expected  volatility,  the  historical  volatility  of  the  Company's  common  stock  was 
used.

Performance period - The Company’s performance period is based on the vesting term of the Company’s PSU awards.

Stock Options

Stock options vest over three years and have a contractual limit of ten years from the date of grant to exercise. The fair value of 
stock options granted is determined on the date of grant using the Black-Scholes option pricing model, and the related expense 
is recognized on a straight-line basis over the entire vesting period. The determination of the grant date fair value of stock 
options issued is affected by a number of variables, including the fair value of the Company’s common stock, the expected 
common stock price volatility over the expected term of the stock option, the expected term of the stock option, risk-free 
interest rates, and the expected dividend yield of the Company’s common stock. The Company's Black Scholes option pricing 
models include the following assumptions:

•

•

•

Risk-free interest rate - The risk-free interest rate for stock options granted during the period was determined by using 
a zero-coupon U.S. Treasury rate for the periods that coincided with the expected term of the options.

Dividend  yield  -  An  expected  dividend  yield  of  zero  was  included  in  the  calculations,  as  the  Company  does  not 
currently pay nor does it anticipate paying dividends on its common stock as of the grant date of the stock options.

Expected  volatility  -  To  calculate  expected  volatility,  the  historical  volatility  of  the  Company's  common  stock  was 
used.

68

Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

•

Expected term - The Company’s expected term of stock options was calculated using a simplified method whereby the 
midpoint between the vesting date and the end of the contractual term is utilized to compute the expected term, as the 
Company does not have sufficient historical data for options with similar vesting and contractual terms.

The following table indicates the weighted average assumptions that were used related to the awards granted during the year 
ended December 31, 2023:

Stock options granted:
Risk-free interest rate
Dividend yield
Volatility
Expected term (in years)

The Company recorded the following compensation expense related to the Stock Plans:

(in thousands)

RSA expense

PSU expense

Stock option expense

Total stock-based compensation expense

Year ended December 
31, 2023

1,000,000
 4 %
 — %
 62 %
6

Years Ended December 31,

2023

2022

1,887  $ 

1,679 

650 

111 

302 

— 

2,648  $ 

1,981 

$ 

$ 

Stock-based  compensation  expense  related  to  manufacturing  employees  and  administrative  employees  is  included  in  the 
"Consumables  cost  of  revenue,  excluding  depreciation  and  amortization"  and  "Payroll  and  benefits"  line  items  in 
the Consolidated Statements of Operations. Stock-based compensation expense related to non-employee directors is included in 
the "General and administrative" line item in the Consolidated Statements of Operations. The Company recognizes forfeitures 
as they occur.

The  amount  of  unrecognized  compensation  cost  as  of  December  31,  2023,  and  the  expected  weighted-average  period  over 
which the cost will be recognized is as follows:

(in thousands)

RSA expense
Stock option expense

PSU expense

Total unrecognized stock-based compensation expense

As of December 31, 2023

Unrecognized 
Compensation 
Cost

Expected 
Weighted-
Average Period 
of Recognition (in 
years)

$ 

$ 

1,412 
618 

994 

3,024 

1.67
2.54

1.36

1.30

69

 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Activity

Restricted Stock

A summary of activity of RSAs for the year ended December 31, 2023 is presented in the following table:

(in thousands, except for share and per share amounts)
For the year ended December 31, 2023

Non-vested at January 1, 2023

Granted

Vested

Forfeited

Non-vested at December 31, 2023

Weighted-
Average 
Grant Date Fair 
Value

Restricted Stock

Awards

RSA's

652,962  $ 

773,327  $ 

(435,013)  $ 

(201,271)  $ 

790,005  $ 

5.58 

1.91 

4.59 

3.29 

3.10 

The weighted-average grant date fair value of RSAs granted or modified for the years ended December 31, 2023 and 2022 was 
$1.91 and $5.69, respectively. The total grant-date fair value of RSAs vested for the years ended December 31, 2023 and 2022 
was  $2.0  million  and  $1.7  million,  respectively.  The  aggregate  intrinsic  value  of  non-vested  RSAs  outstanding  as  of 
December 31, 2023 was $2.4 million.

PSUs

PSUs outstanding remain unvested until either the requisite performance condition of the grant is met, or the third anniversary 
of  their  issuance  date,  at  which  time  the  actual  number  of  vested  shares  will  be  determined  based  on  the  actual  price 
performances of the Company’s common stock relative to a broad stock index and a peer group performance index.

A summary of PSU activity for the year ended December 31, 2023 is presented in the table below:

For the year ended December 31, 2023
PSU's outstanding, January 1, 2023
Granted

Vested / Settled

Forfeited / Canceled

PSU's outstanding, December 31, 2023

Weighted-
Average
Grant Date
Fair Value

Aggregate 
Intrinsic Value 
(in thousands)

Weighted-
Average
Remaining
Contractual
Term (in years)

7.85 

1.52 
6.17 

3.37 
2.06  $ 

2,887 

1.33

Units

148,591  $ 

982,709 
(41,855)   

(120,527)   
968,918  $ 

70

 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Stock Options

A summary of stock option activity for the year ended December 31, 2023 is presented below:

For the year ended December 31, 2023
Options outstanding, Options outstanding at 
January 1, 2023
Options granted
Options exercised
Options expired / forfeited
Options outstanding, Options outstanding at 
December 31, 2023
Options vested and exercisable at December 31, 
2023

Note 13 - Income Taxes

The sources of pretax loss are as follows:

(in thousands)
Domestic

Foreign

The provision for income taxes consists of the following:

(in thousands, except for rate)
Current portion of income tax expense:

Federal

State and other

Deferred portion of income tax expense (benefit):

Federal

State and other

Total income tax expense

Effective tax rate

Number of Options
Outstanding and
Exercisable

Weighted-Average
Exercise Price

Aggregate Intrinsic 
Value

Weighted-Average
Remaining 
Contractual
Term (in years)

—  $ 

1,000,000 
— 
— 

— 
3.00 
— 
— 

1,000,000  $ 

3.00  $ 

—  $ 

—  $ 

— 

— 

9.54

0

$ 

$ 

$ 

Years ended December 31,

2023

2022

(9,123)  $ 

(2,973)   

(12,096)  $ 

(8,708) 

— 

(8,708) 

Years Ended December 31,

2023

2022

$ 

— 

153 

153 

— 

— 

— 

(10) 

219 

209 

— 

— 

— 

209 

$ 

153 

$ 

 (1) %

 (2) %

71

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

Income tax expense (benefit) differed from the amount that would be computed by applying the U.S. statutory federal income 
tax rate of 21% to loss before income taxes for the years ended December 31, 2023 and 2022 as follows:

(in thousands)
Federal statutory rate

State income taxes, net of federal benefit

Permanent differences

Valuation allowances

Changes in tax rates

Stock-based compensation

Return to provision and other true-ups

Income tax expense

Years Ended December 31,

2023

2022

$ 

(2,540)  $ 

116 

755 

1,385 

(74)   

367 

144 

153  $ 

$ 

(1,829) 

115 

1,284 

825 

(87) 

10 

(109) 

209 

Deferred income taxes are provided for the effects of temporary differences between the tax basis of an asset or liability and 
their  reported  amounts  in  the  accompanying  Consolidated  Balance  Sheets.  These  temporary  differences  result  in  taxable  or 
deductible amounts in future years. Details of the Company’s deferred tax assets and liabilities are summarized as follows: 

(in thousands)
Deferred tax assets

Tax credits

Net operating loss carryforwards

Intangible assets

Employee related liabilities

Operating lease obligations

ARO, net of reimbursements

Research and development capitalization

Other investments

Equity method investments

Inventory

Interest limitations

Other

Total deferred tax assets

Less valuation allowance

Deferred tax assets

Less: Deferred tax liabilities

Property and equipment and other

Right of use operating lease assets

Upfront customer consideration

Equity method investments

Total deferred tax liabilities

Net deferred tax assets

As of December 31,

2023

2022

$ 

86,125  $ 

86,125 

17,018 

1,061 

1,047 

2,506 

1,428 

1,227 

515 

— 

612 

121 
647 
112,307 

(98,836)   

13,471 

(9,230)   

(2,454)   

(1,383)   

(404)   

2,892 

2,638 

1,968 

1,828 

1,448 

739 

518 

325 

315 

77 
429 
99,302 

(88,293) 

11,009 

(7,702) 

(1,800) 

(1,507) 

— 

(13,471)   

(11,009) 

$ 

—  $ 

— 

Accounting  for  income  taxes  requires  that  companies  assess  whether  a  valuation  allowance  should  be  recorded  against  a 
deferred  tax  asset  based  on  an  assessment  of  the  amount  of  the  deferred  tax  asset  that  is  "more  likely  than  not"  to  be 

72

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

realized. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount that is more likely 
than not to be realized. 

The Company assesses a valuation allowance recorded against deferred tax assets at each reporting date. The determination of 
whether a valuation allowance is appropriate requires the evaluation of positive and negative evidence that can be objectively 
verified.  Consideration  must  be  given  to  all  sources  of  taxable  income  available  to  realize  a  deferred  tax  asset,  including,  as 
applicable,  the  future  reversal  of  existing  temporary  differences,  future  taxable  income  forecasts  exclusive  of  the  reversal  of 
temporary differences and carryforwards, taxable income in carryback years and tax planning strategies. In estimating taxes, the 
Company  assesses  the  relative  merits  and  risks  of  the  appropriate  tax  treatment  of  transactions  taking  into  account  statutory, 
judicial and regulatory guidance.

As of December 31, 2023, the Company concluded it is more likely than not the Company will not generate sufficient taxable 
income within the applicable net operating loss and tax credit carry-forward periods to realize any of its net deferred tax assets. 
For  the  year  ended  December  31,  2023,  the  Company  increased  a  valuation  allowance  from  December  31,  2022  by  $10.5 
million and as of December 31, 2023, has a valuation allowance equal to 100% of its net deferred tax assets. In reaching this 
conclusion, the Company primarily considered forecasts of future taxable losses. 

The following table presents the approximate amount of federal and state net operating loss carryforwards and federal tax credit 
carryforwards available to reduce future taxable income, along with the respective range of years that the net operating loss and 
tax credit carryforwards would expire if not utilized:

(in thousands)

Federal net operating loss carryforwards (1)

Foreign net operation loss carryforwards

State and other net operating loss carryforwards

Federal tax credit carryforwards

As of December 31,

2023

Beginning expiration 
year

Ending expiration 
year

$ 

$ 

$ 

$ 

10,177 

3,629 

3,211 

86,125 

2035

Indefinite

2025

2032

Indefinite

Indefinite

Indefinite

2041

(1) Approximately $8.8 million of the federal net operating loss carryforwards were acquired in the Arq Acquisition, of which $6.2 million  
have expiration dates beginning in 2035.

The following table sets forth a reconciliation of the beginning and ending unrecognized tax positions on a gross basis for the 
years ended December 31, 2023 and 2022:

(in thousands)

Balance as of January 1

Lapse of applicable statute of limitations
Balance as of December 31

Years Ended December 31,

2023

2022

$ 

$ 

54  $ 

— 
54  $ 

54 

— 
54 

For the years ended December 31, 2023 and 2022, the Company did not record any adjustments or recognize interest expense 
for  uncertain  tax  positions.  Interest  and  penalties  related  to  uncertain  tax  positions  are  accrued  and  included  in  the  "Interest 
expense" line item in the Consolidated Statements of Operations. Additional information related to the components of "Interest 
expense" is included in Note 10. 

The Company files income tax returns in the U.S., various states and the United Kingdom. The Company is no longer subject to 
U.S.  federal  examinations  by  tax  authorities  for  years  before  2020.  The  Company  is  generally  no  longer  subject  to  state 
examinations by tax authorities for years before 2016. 

U.S. federal income tax rules, and Sections 382 of the Internal Revenue Code in particular, could substantially limit the use of 
Section  45  tax  credits  and  other  tax  assets  if  the  Company  experiences  an  "ownership  change"  (as  defined  in  the  Internal 
Revenue Code). In general, an ownership change occurs if the aggregate stock ownership of certain stockholders (generally 5% 
stockholders, applying certain look-through rules) increases by more than 50 percentage points over such stockholders' lowest 
percentage ownership during the testing period (generally three years). 

73

 
 
 
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

An entity that experiences an ownership change generally will be subject to an annual limitation on its pre-ownership change 
tax loss and credit carryforwards equal to the equity value of the entity immediately before the ownership change, multiplied by 
the  long-term,  tax-exempt  rate  posted  monthly  by  the  Internal  Revenue  Service  (subject  to  certain  adjustments).  The  annual 
limitation would be increased each year to the extent that there is an unused limitation in a prior year.

In connection with the Arq Acquisition and PIPE Investment, we issued additional shares of our common stock. We performed 
an IRC Section 382 analysis as of the Acquisition Date and determined that we had not experienced an ownership change as of 
that date. 

The Company acquired certain tax assets (the "Legacy Arq Tax Assets") in the Arq Acquisition, totaling approximately $12.5 
million. The Legacy Arq Tax Assets are comprised of net operating loss carryforwards, of which $8.8 million were in the U.S. 
Prior to the Acquisition Date, Legacy Arq completed numerous equity offerings that resulted in ownership changes. We have 
not  completed  a  formal  IRC  Section  382  analysis  of  Legacy  Arq  equity  changes  from  its  inception  through  the  Acquisition 
Date, however, the Company believes that one or more "ownership changes" occurred during this time period as defined under 
Sections 382 and 383 and that a portion or all the Legacy Arq Tax Assets may subject to an annual limitation.

On May 5, 2017, the Board approved the declaration of a dividend of rights to purchase Series B Junior Participating Preferred 
Stock  for  each  outstanding  share  of  common  stock  as  part  of  a  tax  asset  protection  plan  (the  "TAPP"),  which  is  designed  to 
protect the Company’s ability to utilize its net operating losses and tax credits. The TAPP is intended to act as a deterrent to any 
person  acquiring  beneficial  ownership  of  4.99%  or  more  of  the  Company’s  outstanding  common  stock.  During  the  years 
2018-2023,  we  executed  amendments  to  the  TAPP  (the  "TAPP  Amendments"),  which  amended  the  definition  of    "Final 
Expiration Date" under the TAPP to extend the duration of the TAPP and makes associated changes in connection therewith. 
The  most  recent  TAPP  Amendment  was  approved  at  our  2023  annual  meeting  of  stockholders  and  extended  the  Final 
Expiration Date to the close of business on December 31, 2024.

Note 14 - Major Customers

Revenue from external customers who represent 10% or more of the Company’s revenue for the years ended December 31, 
2023 and 2022 were as follows:

Customer

Revenue Type

A

B

Consumables

Consumables 

Note 15 - Related Party Transactions

Consumables Cost of Revenue

Years ended December 31,

2023
19%

9%

2022
18%

11%

For  the  year  ended  December  31,  2023,  the  Company  recognized  $0.7  million  of  Tinuum  Group  Royalty  expense,  which  is 
included  in  the  "Consumables  cost  of  revenue,  exclusive  of  depreciation  and  amortization"  line  item  in  the  Consolidated 
Statement of Operations.

Tinuum Group Obligation

As of December 31, 2023 and 2022, the Company had an outstanding liability of $1.7 million related to its contractual amount 
due  under  the  Tinuum  Group  Obligation,  which  is  included  in  the  "Other  current  liabilities"  line  item  in  the  Consolidated 
Balance Sheet. Refer to Note 8 for further discussion.

Note 16 - Defined Contribution Savings Plans

The Company sponsors a qualified defined contribution savings plan (the "401(k) Plan") that allows participation by eligible 
employees  who  may  defer  a  portion  of  their  gross  pay.  The  Company  makes  contributions  to  the  401(k)  Plan  based  on 
percentages of an employee's eligible compensation as specified in the 401(k) Plan, and such employer contributions are in the 
form of cash. 

74

  
Arq, Inc. and Subsidiaries
Notes to Consolidated Financial Statements

The following table presents the amount of the Company's contributions made to the 401(k) Plans: 

(in thousands)
401(k) Plans employer contributions

Years Ended December 31,

2023

2022

$ 

613  $ 

552 

75

Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

As  required  by  Rule  13a-15(b)  under  the  Securities  Exchange  Act  of  1934,  as  amended  (the  "Exchange  Act"),  we  have 
evaluated, under the supervision of and with the participation of our management, including our principal executive officer and 
principal financial officer, the effectiveness of the design and operation of our disclosure controls and procedures (as defined in 
Rules  13a-15(e)  and  15d-15(e)  under  the  Exchange  Act)  as  of  the  end  of  the  period  covered  by  this  annual  report.  Our 
disclosure controls and procedures are designed to ensure that information required to be disclosed in the reports that we file or 
submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s 
rules and forms. Based upon this evaluation, our principal executive officer and principal financial officer concluded that our 
disclosure controls and procedures were effective as of December 31, 2023.

Management’s Report on Internal Control over Financial Reporting

Management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting  as  defined  in 
Rules  13a-15(f)  and  15d-15(f)  under  the  Exchange  Act.  Internal  control  over  financial  reporting  is  designed  to  provide 
reasonable assurance regarding the reliability of financial reporting and the preparation of consolidated financial statements for 
external purposes in accordance with generally accepted accounting principles. The Company's internal control over financial 
reporting includes those policies and procedures that:

1. Pertain  to  the  maintenance  of  records  that,  in  reasonable  detail,  accurately  and  fairly  reflect  the  transactions  and 

dispositions of our assets;

2. Provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements 
in accordance with generally accepted accounting principles, and that receipts and expenditures of the Company are 
being made only in accordance with authorizations of our management and directors; and

3. Provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition 

of the Company’s assets that could have a material effect on our financial statements.

Because  of  its  inherent  limitations,  internal  control  over  financial  reporting  may  not  prevent  or  detect  misstatements.  Also, 
projections  of  any  evaluation  of  effectiveness  to  future  periods  are  subject  to  the  risk  that  controls  may  become  inadequate 
because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision of, and with the participation of our management, including the principal executive officer and principal 
financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the 
framework and criteria established in Internal Control-Integrated Framework in 2013, issued by the Committee of Sponsoring 
Organizations of the Treadway Commission. Based on this evaluation, our management concluded that our internal control over 
financial reporting was effective as of December 31, 2023.

We acquired Legacy Arq during the first quarter of 2023 (refer to Item 8. Note 2 of this Report). As permitted by Securities and 
Exchange Commission Staff interpretive guidance for newly acquired businesses, management excluded Legacy Arq from its 
evaluation  of  internal  control  over  financial  reporting  as  of  December  31,  2023.  We  are  in  the  process  of  documenting  and 
testing  Legacy  Arq's  internal  controls  over  financial  reporting.  We  will  incorporate  Legacy  Arq  into  our  annual  report  on 
internal  control  over  financial  reporting  for  our  year  ending  December  31,  2024.  As  of  December  31,  2023,  Legacy  Arq  net 
assets totaled $40.5 million. Legacy Arq contributed $11.7 million of net loss in our Consolidated Statements of Operations for 
the year ended December 31, 2023.

Changes in Internal Control Over Financial Reporting

There has been no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the 
Exchange Act) during the fourth quarter of 2023 that has materially affected, or is reasonably likely to materially affect, our 
internal control over financial reporting.

76

Item 9B. Other Information

None.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

None.

77

Item 10. Directors, Executive Officers, and Corporate Governance

PART III

The information required by this Item is incorporated by reference to our definitive proxy statement for the Annual Meeting of 
Stockholders to be filed within 120 days from December 31, 2023.

Item 11. Executive Compensation

The information required by this Item is incorporated by reference to our definitive proxy statement for the Annual Meeting of 
Stockholders to be filed within 120 days from December 31, 2023.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The  information  required  by  this  Item  concerning  security  ownership  of  certain  beneficial  owners  and  management  is 
incorporated by reference to our definitive proxy statement for the Annual Meeting of Stockholders to be filed within 120 days 
from December 31, 2023, with the exception of the following information.

Securities Authorized for Issuance under Equity Compensation Plans

We  have  plans  under  which  equity  awards  are  authorized  for  grant  or  issuance  as  compensation  to  eligible  employees, 
consultants, and members of the Board. Our stockholders have approved these plans. See Note 12 -  Stock-Based Compensation 
included  in  Item  8  of  this  Report  for  further  information  about  the  material  terms  of  our  equity  compensation  plans.  The 
following table is a summary of the shares of our common stock authorized for issuance under the equity compensation plans as 
of December 31, 2023:

Plan Category

Equity compensation plans approved by security holders (1)
Equity compensation plans not approved by security holders

Total

Number of 
securities to be 
issued upon 
exercise of 
outstanding 
options, warrants 
and rights

Weighted-
average exercise 
price of 
outstanding 
options, warrants 
and rights 

—  (2) $ 
$ 
— 

— 

3.00  (3)
— 

Number of 
securities 
remaining available 
for future issuance 
under equity 
compensation plans 
(excluding 
securities reflected 
in the first column)

190,281 

— 

190,281 

(1) Includes securities registered for issuance under the 2017 Omnibus Incentive Plan and 2022 Omnibus Incentive Plan.

(2)  Of  these  shares,  1,000,000  were  subject  to  non-qualified  stock  options,  790,005  were  subject  to  unvested  restricted  stock  awards  and 
968,918 were subject to unvested performance share units.

(3) The restricted shares and RSUs were granted at full value, and therefore, have a weighted-average exercise price of $0. Excluding restricted 
shares and PSUs from this calculation, the weighted-average exercise price of outstanding non-qualified stock options was $3.00 at December 
31, 2023.

Item 13. Certain Relationships and Related Transactions and Director Independence

The information required by this Item is incorporated by reference to our definitive proxy statement for the Annual Meeting of 
Stockholders to be filed within 120 days from December 31, 2023.

Item 14. Principal Accountant Fees and Services

The information required by this Item is incorporated by reference to our definitive proxy statement for the Annual Meeting of 
Stockholders to be filed within 120 days from December 31, 2023.

78

 
 
 
 
 
 
PART IV

Item 15. Exhibits and Financial Statement Schedules

(a)

The following consolidated financial statements of Arq, Inc. are filed as part of this Report under Item 8:

(1) 

(2) 

Financial Statements – see Index to Consolidated Financial Statements in Item 8;

Financial Statement Schedules – All schedules are omitted because the required information is not applicable or is 
not present in amounts sufficient to require submission of the schedule or because the information required is 
included in the Consolidated Financial Statements and Notes thereto; and

(3) 

Exhibits – Those exhibits required by Item 601 of Regulation S-K and by paragraph (b) below.

(b)

The following exhibits are filed as part of this Report or, where indicated, were heretofore filed and are hereby 
incorporated by reference: 

Exhibit 
No.
3.1

Description
Second Amended and Restated Certificate of Incorporation of 
Advanced Emissions Solutions, Inc.

Form
10-Q

File No.
000-54992

Incorporated 
by Reference
 Exhibit
3.1

8-K

001-37822

8-K

001-37822

8-K
8-K
10-Q

8-K

001-37822
001-37822
000-54992

001-37822

8-K

001-37822

8-K

001-37822

8-K

001-37822

8-K

001-37822

8-K

001-37822

8-K

001-37822

8-K

001-37822

3.1

3.1

3.1
3.2
4.1

3.2

4.2

4.3

4.4

4.5

4.6

4.7

4.1

Filing Date
August 9, 2013

January 31, 2024

May 8, 2017

February 1, 2023
January 31, 2024
August 9, 2013

May 8, 2017

April 11, 2018

April 11, 2019

April 9, 2020

April 13, 2021

March 16, 2022

April 14, 2023

February 1, 2023

8-K

001-37822

8-K

001-37822

10.1

10.1

June 22, 2017

May 17, 2022

3.2

3.3

3.4
3.5
4.1

4.2

4.3

4.4

4.5

4.6

4.7

4.8

4.9
4.10

10.1

10.2

10.3

Certificate of Amendment to the Amended and Restated 
Certificate of Incorporation, effective February 1, 2024

Certificate of Designation, Preferences, and Rights of Series 
B Junior Participating Preferred Stock of Advanced 
Emissions Solutions, Inc

Certificate of Designations of Series A Preferred Stock
Amended and Restated Bylaws, effective February 1, 2024
Form of Specimen Common Stock Certificate

Tax Asset Protection Plan dated as of May 5, 2017, by and 
between the Company and Computershare Trust Company, 
N.A., as rights agent, which includes as Exhibit B the Form of 
Rights Certificate

First Amendment to Tax Asset Protection Plan dated as of 
April 6, 2018, by and between the Company and 
Computershare Trust Company, N.A., as rights agent

Second Amendment to Tax Asset Protection Plan dated as of 
April 5, 2019, by and between the Company and 
Computershare Trust Company, N.A., as rights agent

Third Amendment to Tax Asset Protection Plan dated as of 
April 8, 2020, by and between the Company and 
Computershare Trust Company, N.A., as rights agent
Fourth Amendment to Tax Asset Protection Plan dated as of 
April 9, 2021, by and between the Company and 
Computershare Trust Company, N.A., as rights agent
Fifth Amendment to Tax Asset Protection Plan dated as of 
March 15, 2022, by and between the Company and 
Computershare Trust Company, N.A., as rights agent
Sixth Amendment to Tax Asset Protection Plan dated as of 
April 13, 2023, by and between the Company and 
Computershare Trust Company, N.A., as rights agent.
Form of Warrant
Description of the Registrant's Securities Registered Pursuant 
to Section 12 of the Securities Exchange Act of 1934*
Advanced Emissions Solutions, Inc. 2017 Omnibus Incentive 
Plan**

Advanced Emissions Solutions, Inc. 2022 Omnibus Incentive 
Plan**
Form of Restricted Stock Award Agreement under the 2022 
Omnibus Incentive Plan*,**

79

Exhibit 
No.
10.4

10.5

10.6

10.7

10.8

10.9

10.10

10.11

10.12

10.13

10.14

10.15

10.16

Description
Form of Performance Stock Unit Agreement under the 2022 
Omnibus Incentive Plan*,**
Form of Amendment No. 2 to Employment Agreement of 
Greg Marken**
Second Amended and Restated Operating Agreement of 
Clean Coal Solutions, LLC dated May 27, 2011, by and 
among Clean Coal Solutions, LLC, ADA-ES, Inc., GSFS 
Investments I Corp. and NexGen Refined Coal, LLC***

The First Amendment to the Second Amended and Restated 
Operating Agreement of Clean Coal Solutions, LLC, by and 
among Clean Coal Solutions, LLC, ADA-ES, Inc., GSFS 
Investments I Corp. and NexGen Refined Coal, LLC dated 
September 9, 2011

Second Amendment to the Second Amended and Restated 
Operating Agreement of Clean Coal Solutions, LLC by and 
among ADA-ES, Inc., NexGen Refined Coal, LLC and GSFS 
Investments I Corp. dated July 31, 2012

Contribution Agreement dated May 27, 2011 between ADA-
ES, Inc. and NexGen Refined Coal, LLC

Amended and Restated Limited Liability Company Operating 
Agreement by and between ADA-ES, Inc., NexGen Refined 
Coal, LLC and Clean Coal Solutions Services, LLC dated 
November 20, 2013

Amended and Restated License Agreement between ADA-
ES, Inc. and Clean Coal Solutions, LLC dated October 30, 
2009

First Amendment to the Amended and Restated License 
Agreement between ADA-ES, Inc. and Clean Coal Solutions, 
LLC dated as of August 4, 2010

Second Amendment to Amended and Restated License 
Agreement by and between ADA-ES, Inc. and Clean Coal 
Solutions, LLC dated as of July 23, 2013***

Technology Sublicense Agreement between ADA-ES, Inc., 
Clean Coal Solutions, LLC, and GS RC Investments LLC 
dated June 29, 2010

Amendment to Technology Sublicense Agreement between 
ADA-ES, Inc., GS RC Investments, LLC, and Clean Coal 
Solutions, LLC dated November 21, 2011***

Amendment #2 to Technology Sublicense Agreement 
between ADE-ES, Inc, GS RC Investments, LLC, and Clean 
Coal Solutions, LLC dated December 15, 2011

Form

File No.

Incorporated 
by Reference
 Exhibit

Filing Date

10-Q

001-37822

10.1

August 6, 2018

10-Q/A

000-50216

10.33

September 28, 2011

10-Q

000-50216

10.89

November 14, 2011

10-Q

000-50216

10.59

November 9, 2012

10-Q

000-50216

10.87

August 12, 2011

10-K

000-54992

10.38

February 29, 2016

10-Q

000-50216

10.77

August 16, 2010

10-K

000-50216

10.81

March 28, 2011

10-Q

000-54992

10.63

November 12, 2013

10-Q

000-50216

10.74

August 16, 2010

10-K

000-54992

10.44

February 29, 2016

10-K

000-50216

10.49

March 15, 2012

10.17 M-45 Technology License Agreement between ADA-ES, Inc. 

10-Q

000-50216

10.58

November 9, 2012

10.18

10.19

10.20

10.21

and Clean Coal Solutions, LLC dated July 27, 2012***

Lignite Mining Agreement between Demery Resources 
Company, L.L.C. and Five Forks Mining, LLC dated as of 
June 29, 2009***

First Amendment to Lignite Mining Agreement between 
Demery Resources Company, L.L.C. and Five Forks Mining, 
LLC, dated as of March 22, 2017***

Third Amendment to the Second Amended and Restated 
Operating Agreement of Tinuum Group, LLC. dated 
September 4, 2019***

Master Agreement for Supply of Furnace Products between 
ADA Carbon Solutions, LLC and Cabot Norit Americas, 
Inc.***

10-K

001-37822

10.43

March 18, 2019

10-K

001-37822

10.44

March 18, 2019

10-Q

001-37822

10.1

November 12, 2019

8-K

001-37822

10.1

September 30, 2020

80

Form
8-K

File No.
001-37822

Incorporated 
by Reference
 Exhibit
10.2

Filing Date
September 6, 2022

8-K

001-37822

2.1

February 1, 2023

8-K

8-K

001-37822

001-37822

10.1
10.2

February 1, 2023

February 1, 2023

10-K

001-37822

10.35

March 8, 2023

8-K

001-37822

10.1

June 6, 2023

8-K

8-K

001-37822

001-37822

8-K

001-37822

8-K

001-37822

10.2

10.1

10.3

10.1

July 17, 2023

July 17, 2023

September 18, 2023

November 8, 2023

Exhibit 
No.
10.22

10.23

10.24

10.25

10.26

10.27

10.28

10.29

10.30

10.31

10.32

21.1
23.1
31.1

31.2

32.1

95

Description
Membership Interest Purchase Agreement between Caddo 
Creek Resources Company, L.L.C., as Buyer, and ADA 
Carbon Solutions (Operations), LLC, as Seller dated as of 
September 2, 2022***
Securities Purchase Agreement, dated as of February 1, 2023, 
by and among Advanced Emissions Solutions, Inc. and Arq 
Limited***

Registration Rights Agreement***

Term Loan and Security Agreement among Advanced 
Emissions Solutions, Inc., as Debtor, Certain Subsidiaries of 
Debtor, as Guarantors, CF Global Credit, LP, as 
Administrative Agent, and the Lenders, from time to time 
party hereto, dated as of February 1, 2023***
Loan Agreement among Community Trust Bank, Inc.; Corbin 
Project LLC, Arq Projects Holding Company LLC, Arq St. 
Rose LLC, Arq Corbin LLC and Arq Corbin Land LLC, dated 
January 27, 2021†
Loan Modification Agreement, among Community Trust 
Bank, Inc.; Corbin Project LLC, Arq Projects Holding 
Company LLC, Arq St. Rose LLC, Arq Corbin LLC and Arq 
Corbin Land LLC, dated as of June 2, 2023
Employment Agreement by and between Robert E. Rasmus 
and Advanced Emissions Solutions, Inc., dated July 17, 2023
Subscription Agreement by and between Robert E. Rasmus, 
RER Legacy Investments II LLC and Advanced Emissions 
Solutions, Inc., dated July 17, 2023
Inducement Award by and between Robert E. Rasmus and 
Advanced Emissions Solutions, Inc., dated July 17, 2023*,**
Employment Agreement by and between Jeremy D. 
Williamson and Advanced Emissions Solutions, Inc., dated 
September 18, 2023
Employment Agreement by and between Stacia Hansen and 
Advanced Emissions Solutions, Inc., dated November 6, 2023
Subsidiaries of Arq, Inc.*
Consent of Moss Adams LLP*
Certification of Principal Executive Officer of Arq, Inc. 
Pursuant to 17 CFR 240.13a-14(a) or 17 CFR 240.15d-14(a)*

Certification of Principal Financial Officer of Arq, Inc. 
Pursuant to 17 CFR 240.13a-14(a) or 17 CFR 240.15d-14(a)*

Certification of Principal Executive Officer and Principal 
Financial Officer of Arq, Inc. Pursuant to 18 U.S.C Section 
1350, as Adopted Pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002*

Mine Safety Disclosure Exhibit*

81

Exhibit 
No.
97

101

Notes:
* 
** 
*** 

† 

Form

File No.

Incorporated 
by Reference
 Exhibit

Filing Date

Description
Clawback Policy*

The following financial statements, formatted in XBRL: (i) 
Consolidated Balance Sheets as of December 31, 2023 and 
2022, (ii) Consolidated Statements of Operations for the 
Years ended December 31, 2023 and 2022, (iii) Consolidated 
Statements of Changes in Stockholders’ Equity for the Years 
ended December 31, 2023 and 2022, (iv) Consolidated 
Statements of Cash Flows for the Years ended December 31, 
2023 and 2022; and (v) Notes to the Consolidated Financial 
Statements. The information in Exhibit 101 is "furnished" and 
not "filed" as provided in Rule 401 of Regulation S-T.

– Filed herewith.
– Management contract or compensatory plan or arrangement.
– Portions of this exhibit have been omitted pursuant to Item 601(b)(10) as information that the Company customarily 
and actually treats that information as private or confidential and is not material.
– Schedules and exhibits have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The Company hereby 
undertakes to furnish supplemental copies of any of the omitted schedules and exhibits upon request by the SEC.

Filings for the Company were made under the name ADA-ES, Inc. (File No. 000-50216) prior to July 1, 2013, the effective date 
of our reorganization, and under the name Advanced Emissions Solutions, Inc. (File No. 000-54992) starting on July 1, 2013. 
Filings for the Company were made under the name Advanced Emissions Solutions, Inc. (File No. 001-37822) starting on July 
6, 2016. On February 1, 2024, the Company changed its name to Arq, Inc.

(c)

Financial Statement Schedules. Please refer to Item 15(a) above.

82

Item 16. Form 10-K Summary

None.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Exchange Act, the Registrant has duly caused this report to be signed 
on its behalf by the undersigned, thereunto duly authorized.

Arq, Inc.
(Registrant)

By /s/ Robert Rasmus

By /s/ Stacia Hansen

Robert Rasmus
Chief Executive Officer (Principal Executive Officer)

Stacia Hansen
Chief Accounting Officer (Principal Financial and 
Accounting Officer)

Date: March 12, 2024

Date: March 12, 2024

Pursuant to the requirements of the Exchange Act, this report has been signed below by the following persons on behalf of the 
Registrant and in the capacities and on the dates indicated.

By /s/ Richard Campbell-Breeden

Richard Campbell-Breeden, Director

Date: March 12, 2024

By /s/ Carol Eicher

Carol Eicher, Director

Date: March 12, 2024

By /s/ Julian McIntyre

Julian McIntyre, Director

Date: March 12, 2024

By /s/ L. Spencer Wells

L. Spencer Wells, Director

Date: March 12, 2024

By /s/ Jeremy Blank

Jeremy Blank, Director

Date: March 12, 2024

By /s/ Gilbert Li

Gilbert Li, Director

Date: March 12, 2024

By /s/ Laurie Bergman

Laurie Bergman, Director

Date: March 12, 2024

By /s/ Robert Rasmus
Robert Rasmus, Director

Date: March 12, 2024

83

 
 
Corporate Headquarters
8051 E. Maplewood Ave, Suite 210
Greenwood Village, CO 80111
Phone: (888) 822-8617 
contactus@arq.com

Investor Relations
Anthony Nathan – Investor & Corporate Relations (Arq)
Marc Silverberg  - Managing Partner (ICR)
investors@arq.com