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Natural Gas Services Group, Inc.

ngs · NYSE Energy
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FY2020 Annual Report · Natural Gas Services Group, Inc.
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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, 2020
or
☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
             For the transition period from________________________to__________________________
Commission file number: 1-31398

NATURAL GAS SERVICES GROUP, INC.
(Exact Name of Registrant as Specified in its Charter)

Colorado
(State or other jurisdiction of incorporation or organization)
404 Veterans Airpark Lane, Suite 300, Midland, Texas
(Address of principal executive offices)
Registrant’s telephone number, including area code:

75-2811855
(I.R.S.  Employer Identification No.)
79705
(Zip Code)
(432) 262-2700

Title of each class
Common Stock, $.01 par value

Securities registered pursuant to Section 12(b) of the Act:
Trading Symbol(s)
NGS

Name of each exchange on which registered
New York Stock Exchange

Securities registered pursuant to 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 ☐                   No ☒

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.

Yes ☐                   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.
Yes ☒                   No ☐ 
Indicate  by  check  mark  whether  the  registrant  has  submitted  electronically  and  posted  on  its  corporate  Web  site,  if  any,  every  Interactive  Data  File  to  be  submitted  and
posted pursuant to Rule 405 of Regulation S-T (§40232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to
submit and post such files).

Yes ☒                   No ☐
Indicate by check mark if disclosure of delinquent filers pursuant 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. Yes ☐                  No
☒

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
“accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.  
(Check one):

Large accelerated filer ☐

Accelerated filer   ☐

Non-accelerated filer ☒

Smaller reporting company ☒

Emerging growth company ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Yes ☐                  No ☒

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.☐

The aggregate market value of voting and non-voting common equity held by non-affiliates of the Registrant as of June 30, 2020 was approximately $82,414,178 based on
the closing price of the common stock on that date on the New York Stock Exchange.

At March 26, 2021, there were 13,605,803 shares of the Registrant's common stock outstanding.

Documents incorporated by reference

Certain information called for in Items 10, 11, 12, 13 and 14 of Part III are incorporated by reference to the registrant’s definitive proxy statement for the annual meeting of
shareholders expected to be held on June 17, 2021.

 
 
 
 
 
FORM 10-K
NATURAL GAS SERVICES GROUP, INC.
TABLE OF CONTENTS

Item No.

Item 1.
Item 1A.
Item 1B.
Item 2.
Item 3.
Item 4.

Item 5.

Item 6.
Item 7.
Item 8.
Item 9.
Item 9A.
Item 9B.

Item 10.
Item 11.

Item 12.

Item 13.
Item 14.

Business
Risk Factors
Unresolved Staff Comments
Properties
Legal Proceedings
Mine Safety Disclosures

PART I

PART II

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of
Equity Securities
Selected Financial Data
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Financial Statements and Supplementary Data
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
Controls and Procedures
Other Information

PART III

Directors, Executive Officers and Corporate Governance
Executive Compensation
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder
Matters
Certain Relationships and Related Transactions, and Director Independence
Principal Accounting Fees and Services

PART IV

Item 15.
Item 16.

Exhibits and Financial Statements
Form 10-K Summary

Page

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This  Annual  Report  on  Form  10-K  contains  certain  forward-looking  statements,  within  the  meaning  of  Section  27A  of  the  Securities  Act  of
1933  and  Section  21E  of  the  Securities  Exchange  Act  of  1934,  as  amended,  and  information  pertaining  to  us,  our  industry  and  the  oil  and  natural  gas
industry  that  is  based  on  the  beliefs  of  our  management,  as  well  as  assumptions  made  by  and  information  currently  available  to  our  management.   All
statements,  other  than  statements  of  historical  facts  contained  in  this  Annual  Report  on  Form  10-K,  including  statements  regarding  our  future  financial
position, growth strategy, budgets, projected costs, plans and objectives of management for future operations, are forward-looking statements.  We use the
words  “may,”  “will,”  “expect,”  “anticipate,”  “estimate,”  “believe,”  “continue,”  “intend,”  “plan,”  “budget”  and  other  similar  words  to  identify  forward-
looking statements.  You should read statements that contain these words carefully and should not place undue reliance on these statements because they
discuss future expectations, contain projections of results of operations or of our financial condition and/or state other “forward-looking” information.  We
do  not  undertake  any  obligation  to  update  or  revise  publicly  any  forward-looking  statements.   Although  we  believe  our  expectations  reflected  in  these
forward-looking statements are based on reasonable assumptions, no assurance can be given that these expectations or assumptions will prove to have been
correct.  Important factors that could cause actual results to differ materially from the expectations reflected in the forward-looking statements include, but
are not limited to, the following factors and the other factors described in this Annual Report on Form 10-K under the caption “Risk Factors”:

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significant  economic  disruptions  and  adverse  consequences  resulting  from  current  and  possible  long-term  effects  of  the  COVID-19  global
pandemic;

conditions  in  the  oil  and  natural  gas  industry,  including  the  supply  and  demand  for  natural  gas  and  wide  fluctuations  and  possible  prolonged
depression in the prices of oil and natural gas;

economic challenges presently faced by our customers in the oil and natural gas business that, in turn, could adversely affect our sales, rentals and
collectability of our accounts receivable;

regulation or prohibition of new well completion techniques;

competition among the various providers of compression services and products;

changes in safety, health and environmental regulations;

changes in economic or political conditions in the markets in which we operate;

failure of our customers to continue to rent equipment after expiration of the primary rental term;

the inherent risks associated with our operations, such as equipment defects, malfunctions and natural disasters;

our inability to comply with covenants in our debt agreements and the decreased financial flexibility associated with our debt;

future capital requirements and availability of financing;

fabrication and manufacturing costs;

general economic conditions;

acts of terrorism; and

fluctuations in interest rates.

We  believe  that  it  is  important  to  communicate  our  expectations  of  future  performance  to  our  investors.    However,  events  may  occur  in  the
future that we are unable to accurately predict or that we are unable to control.  When considering our forward-looking statements, you should keep in mind
the risk factors and other cautionary statements in this Annual Report on Form 10-K.

Glossary of Industry Terms

"CiP" - A branded gas compressor product line designed, manufactured and packaged by the Company. The 'Cylinder in Plane' design results in
a compact and vibration-free compressor unit that particularly lends itself to unconventional wellhead applications, air compression and compressed natural
gas requirements.

"flare" –  A tall stack equipped with burners used as a safety device at wellheads, refining facilities, gas processing plants, and chemical plants.

Flares are used for the combustion and disposal of combustible gases. The gases are piped to a

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remote,  usually  elevated,  location  and  burned  in  an  open  flame  in  the  open  air  using  a  specially  designed  burner  tip,  auxiliary  fuel,  and  steam  or  air.
Combustible gases are flared most often due to emergency relief, overpressure, process upsets, startups, shutdowns, and other operational safety reasons.
Natural gas that is uneconomical for sale is also flared. Often natural gas is flared as a result of the unavailability of a method for transporting such gas to
markets.

"gas lift" – A production enhancement technique whereby natural gas is injected into an oil well to increase/improve the oil production.

"oil  shale"  –  Also  referred  to  as  tight  oil,  is  petroleum  that  consists  of  light  crude  oil  contained  in  petroleum-bearing  formations  of  low-

permeability, often shale or tight sandstone.

"reciprocating compressors" – A reciprocating compressor is a type of compressor which compresses vapor by using a piston in a cylinder and a

back-and-forth motion.

"screw  compressors"  –  A  type  of  compressor  used  in  low-pressure  and  vapor  compression  applications  where  two  intermesh  rotors  create

pockets of continuously decreasing volume, in which the gas is compressed and its pressure is increased.

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ITEM 1.    BUSINESS

PART I

Unless  the  context  otherwise  requires,  references  in  this  Annual  Report  on  Form  10-K  to  “Natural  Gas  Services  Group,”  the  “Company”,
"NGS", “we,” “us,” “our” or “ours” refer to Natural Gas Services Group, Inc.  Certain specialized terms used in describing our natural gas compressor
business are defined in "Glossary of Industry Terms" on page i.

Smaller Reporting Company

We  are  a  “smaller  reporting  company”  as  defined  by  the  SEC.  As  such,  we  are  eligible  to  comply  with  the  scaled  disclosure  requirements  in

several Regulation S-K and Regulation S-X items. Our disclosures in this Annual Report reflect these scaled requirements.

The Company

Natural Gas Services Group, Inc. (the "Company", “NGS”, "Natural Gas Services Group", "we" or "our") (a Colorado corporation), is a leading
provider  of  natural  gas  compression  equipment  and  services  to  the  energy  industry.  The  Company  manufactures,  fabricates,  rents,  sells  and  maintains
natural gas compressors and flare systems for oil and natural gas production and plant facilities. NGS is headquartered in Midland, Texas, with fabrication
facilities located in Tulsa, Oklahoma and Midland, Texas, and service facilities located in major oil and natural gas producing basins in the U.S.

The Company has shifted its focus over the last several years to medium to large horsepower applications that apply to natural gas associated with
oil-weighted production. Our primary customers are exploration and production companies that utilize our compressor units for artificial lift applications,
i.e.,  production  enhancement  enabled  with  high-pressure  gas  compression  equipment,  on  unconventional  oil  wells  on  single  and  multi-well  pads.  In
addition,  our  customer  base  includes  oil  and  natural  gas  exploration  and  production  ("E&P")  companies  that  are  focused  on  natural  gas-weighted
production  (with  typically  smaller  horsepower  applications)  as  well  as  midstream  companies.  The  Company's  largest  rental  area  is  the  Permian  Basin
(approximately  45.0%  of  rental  revenues  in  2020),  with  the  large  majority  of  its  remaining  rental  revenue  being  generated  in  other  oil  and  natural  gas
producing  regions  and  plays  in  Texas,  New  Mexico  and  Oklahoma,  including  the  San  Juan  Basin,  the  Texas  Panhandle/western  Oklahoma,  the  Barnett
Shale, and central Oklahoma. Other regions and plays in which we provide service include the Utica and Marcellus Shales, Michigan and the DJ Basin.

Our rental contracts typically provide for initial terms of six to 24 months, with our larger horsepower units having contract terms of up to 60
months. As of December 31, 2020, our rental compression fleet was comprised of 2,224 natural gas compression units with 438,524 horsepower. Of this
total, we had 1,274 natural gas compression units in service with 287,646 horsepower, resulting in horsepower utilization of 65.6%. We added 42 units with
approximately  23,265  horsepower  to  our  fleet  during  2020.  24  of  those  units  were  400  horsepower  or  larger  (including  10  at  1,380  horsepower  each),
representing approximately 89% of the horsepower added.

Our  revenue  decreased  13.2%  to  $68.1  million  from  $78.4  million  for  the  year  ended  December  31,  2020  compared  to  the  year  ended
December 31, 2019. This decline was largely the result of our sales revenue decreasing 71.4% to $5.7 million in 2020 from $19.8 million in 2019. For the
year  ended  December  31,  2020  the  Company  reported  net  income  of  $1.8  million  as  compared  to  a  net  loss  of  $13.9  million  for  the  year  ended
December 31, 2019. In  addition,  the  Company's  adjusted  earnings  before  interest,  taxes,  depreciation  and  amortization  ("EBITDA")  decreased  5.5%  to
$22.7 million in 2020 from $24.0 million in 2019. See "Item 6, Selected Financial Data, Non-GAAP Financial Measures" for a reconciliation of adjusted
EBITDA to its closest GAAP financial measure, net (loss) income.

At December 31, 2020, current assets were $72.7 million, which included $28.9 million of cash and cash equivalents.  Current liabilities were
$10.9 million at year end 2020, which included the full amount outstanding on our line of credit of $417,000. Our stockholders' equity as of December 31,
2020 was $251.5 million.

Please see "Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations" for further information.

Our Operating Units

We identify our operating units based upon major revenue sources as Rental, Sales, Service and Maintenance and Corporate.  

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Rental.  Our rental compression units provide small, medium and large horsepower applications for unconventional oil and natural gas production.
Our rental contracts typically provide for initial terms of six to 24 months, with our larger horsepower units having contract terms of up to 60 months. By
outsourcing their compression needs, we believe our customers are able to increase their revenues by producing higher volumes of oil and natural gas due
to  greater  equipment  run  time.  Outsourcing  allows  our  customers  to  reduce  their  compressor  downtime,  operating  and  maintenance  costs,  and  capital
investments,  and  more  efficiently  meet  their  changing  compression  needs.  We  maintain  and  service  all  of  the  compression  equipment  we  rent  to  our
customers.  

The size, type and geographic diversity of our rental fleet enables us to provide our customers with a range of compression units that can serve a

wide variety of applications, and to select the correct equipment for the job, rather than the customer trying to fit the job to its own equipment. We base our
gas compressor rental rates on several factors, including the cost and size of the equipment, the type and complexity of service desired by the customer, the
length of contract and the inclusion of any other services desired, such as installation, transportation and daily operation.

As  of  December  31,  2020,  we  had  2,224  natural  gas  compressors  in  our  rental  fleet  totaling  438,524  horsepower.    Of  this  total,  we  had  1,274
natural gas compressors totaling 287,646 horsepower rented to 80 customers. The utilization rate of our rental fleet as of December 31, 2020 was 57.3%,
while our horsepower utilization for the same period was 65.6%.

Engineered Equipment Sales.  This operating unit includes the following components:

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Compressor  fabrication.    Fabrication  involves  the  design,  fabrication  and  assembly  of  compressor  components  manufactured  by  us  or  other
vendors into compressor units that are ready for rental or sale. In addition to fabricating compressors for our rental fleet, we engineer and fabricate
custom-made natural gas compressors for sale to customers to meet their specifications based on well pressure, production characteristics and the
particular applications for which compression is sought. Fabricated compressors comprised 39.1% of our sales revenue during 2020.

Parts  sales  and  compressor  rebuilds.    To  provide  customer  support  for  our  compressor  and  flare  sales  businesses,  we  stock  varying  levels  of
replacement  parts  at  our  Midland,  Texas  facility  and  at  field  service  locations.  We  also  provide  an  exchange  and  rebuild  program  for  small
horsepower  screw  compressors  and  maintain  an  inventory  of  new  and  used  compressors  to  facilitate  this  part  of  our  business.  Parts  sales  and
compressor rebuilds comprised 52.3% of our sales revenue during 2020.

Flare fabrication.  We design, fabricate, sell, install and service flare stacks and related ignition and control devices for the onshore and offshore
incineration  of  gas  compounds  such  as  hydrogen  sulfide,  carbon  dioxide,  natural  gas  and  liquefied  petroleum  gases.    Applications  for  this
equipment are often environmentally and regulatory driven.

Compressor manufacturing.  We design and manufacture our own proprietary line of reciprocating natural gas compressor frames, cylinders and
parts known as our “CiP”, or Cylinder-in-Plane, product line. We use the finished components to fabricate compressor units for our rental fleet or
for sale to customers.  We also sell finished components to other fabricators.

Service  and  Maintenance.    We  service  and  maintain  compressors  owned  by  our  customers  on  an  “as  needed”  and  contract  basis.  Natural  gas
compressors  require  routine  maintenance  and  periodic  refurbishing  to  prolong  their  useful  life.    Routine  maintenance  includes  physical  and  visual
inspections and other parametric checks that indicate a change in the condition of the compressors.  We perform engine and compressor overhauls on a
condition-based  interval  or  a  time-based  schedule  or  at  the  customer's  request.  Based  on  our  past  experience,  these  maintenance  procedures  maximize
component life and unit availability and minimize downtime.

Business Strategy

Our long-term intentions to grow our revenue and profitability are based on the following business strategies:

•

Expand rental fleet.  We intend to prudently increase the size of our medium and large horsepower rental fleet by fabricating compressor units in
numbers that correspond to pre-contracted agreements with our customers and to market share gains we may experience. We believe our future
growth will be primarily driven through our placement of larger horsepower, centralized wellhead natural gas compressors for unconventional oil
production, with select fabrication of medium horsepower compressors to meet customer demand beyond our inventory.

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• Geographic expansion.  We will continue to consolidate our operations in existing areas, as well as pursue focused expansion into new geographic
regions  as  opportunities  are  identified.  Company's  largest  rental  area  is  the  Permian  Basin  (approximately  45.0%  of  rental  revenues  in  2020),
where we have continued to gain market share and believe we have the most expansion opportunities going forward. The large majority of the
Company's  remaining  rental  revenue  is  being  generated  in  other  oil  and  natural  gas  producing  regions  and  plays  in  Texas,  New  Mexico  and
Oklahoma, including the San Juan Basin, the Texas Panhandle / western Oklahoma, the Barnett Shale, and central Oklahoma. Other regions and
plays in which we provide service include the Utica and Marcellus Shales, Michigan and the DJ Basin.  

•

Selectively pursue acquisitions.  We will continue to evaluate potential acquisitions, joint ventures and other opportunities that could enhance our
current market position, but only those that provide compelling returns to the Company.

All of the above strategies are subject to revisions and adjustments as a result of several factors discussed in Item 1A, Risk Factors.

Competitive Strengths

We believe our competitive strengths include:

•

Superior customer service.  Our availability to provide a broad range of compressors has enabled us to effectively meet the evolving needs of our
customers. We believe this ability, coupled with our personalized services and in-depth knowledge of our customers’ operating needs and growth
plans,  have  allowed  us  to  enhance  our  relationships  with  existing  customers  as  well  as  attract  new  customers.    The  size,  type  and  geographic
diversity of our rental fleet enable us to provide customers with a range of compression units that can serve a wide variety of applications.  We are
able to select the correct equipment for the job, rather than the customer trying to fit its application to our equipment.

• Diversified  product  line.    Our  compressors  are  available  as  low  pressure  rotary  screw  and  higher  pressure  reciprocating  packages.    They  are
designed to meet a number of applications, including compression assisted gas lift on oil wells, wellhead compression on natural gas wells, natural
gas gathering and transmission, and others. In addition, our compressors can be built to handle a variety of gas mixtures, including air, nitrogen,
carbon dioxide, hydrogen sulfide and hydrocarbon gases. A diversified compression product line helps us compete by being able to satisfy widely
varying pressure, volume and production conditions that customers encounter.

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Purpose-built  rental  compressors.    Our  rental  compressor  packages  have  been  designed  and  built  to  address  the  primary  requirements  of  our
customers in the producing regions in which we operate.  Our units are purpose-built but standardized, as the units are compact in design and are
easy, quick and inexpensive to move, install and start-up.  Our control systems are technically advanced, as these systems allow the operator to
monitor as well as start and stop the majority of our units remotely and/or in accordance with well conditions. We also believe our rental fleet is
one of the environmentally efficient in the industry.

Experienced management team.  On average, our executive and operating team members have over 25 years of oilfield services and other energy
industry experience. We believe our management team has successfully demonstrated its ability to grow our business during times of expansion
and to manage through downturns.

Broad geographic presence.  We presently provide our products and services to a customer base of oil and natural gas exploration and production
companies  operating  in  Texas,  New  Mexico,  Oklahoma,  Pennsylvania,  West  Virginia,  Ohio,  Michigan,  Colorado  and  Wyoming.    Our  footprint
allows us to service many of the largest oil and natural gas producing regions in the United States.  We believe that operating in diverse geographic
regions allows us better utilization of our compressors, minimal incremental expenses, operating synergies, volume-based purchasing, leveraged
inventories and cross-trained personnel.

Long-standing  customer  relationships.    We  have  developed  long-standing  relationships  providing  compression  equipment  to  many  major  and
independent oil and natural gas companies.  Our customers generally continue to rent our compressors after the expiration of the initial terms of
our rental agreements, which we believe reflects their satisfaction with the reliability and performance of our services and products.

Overview and Outlook

The  market  for  compression  equipment  and  services  is  dependent  on  the  condition  of  the  oil  and  natural  gas  industry,  including  the  capital
expenditure budgets of domestic oil and gas companies. The level of activity and capital expenditures has generally been dependent upon the prevailing
view of future gas and oil prices, which are influenced by numerous supply and

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demand  factors,  including  availability  and  cost  of  capital,  well  productivity  and  development  costs,  global  and  domestic  economic  conditions,
environmental regulations, policies of OPEC countries and Russia, and other factors. In addition, capital expenditure budgets of energy companies have
become significantly more constrained over the last several year due to the deterioration of energy equity markets and strong demands from institutional
investors that companies keep capital spending within operating cash flow and return capital through dividends and share repurchases. Oil and natural gas
prices and the level of development and production activity have historically been characterized by significant volatility. 

On  January  30,  2020,  the  World  Health  Organization  (“WHO”)  announced  a  global  health  emergency  because  of  a  new  strain  of  coronavirus
known  as  COVID-19  due  to  the  risks  it  imposes  on  the  international  community  as  the  virus  spreads  globally.  In  March  2020,  the  WHO  classified  the
COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. During this time, the market began to experience a decline in oil
prices in response to oil demand concerns due to the global economic impacts of COVID-19. These developments have led to significant weakness in oil
prices and ensuing reductions of exploration and production company capital and operating budgets.

With the significant decline in oil prices as well as the general economic decline caused by the impacts of COVID-19, we expect utilization to
continue  to  decline  among  our  smaller  horsepower  and  medium  horsepower  units  during  the  remainder  of  2021.  In  terms  of  sales,  we  expect  minimal
compressor sales for the year due to much lower capital expenditure budgets throughout the industry, including those of our major customers. Finally, we
continue  to  experience  pricing  pressure  from  our  customers  and  competitors  until  industry  and  economic  conditions  improve.  We  are  currently
experiencing no issues with potential workforce and supply chain disruptions. Our relationship with our major customer continues to be strong, and they
have continued to pay our invoices in a timely, consistent manner. Nevertheless, if any of these circumstances change, our business could be adversely
affected.

While management anticipates that the industry and economic impact of the pandemic will have a negative effect on its results of operations in

2021 and perhaps beyond, the degree to which these factors will impact our business remains uncertain. Please read Item 1A, Risk Factors, in this report.

Major Customers

Sales and rental income to Occidental Permian, LTD. ("Oxy") for the years ended December 31, 2020 and 2019 amounted to 30% and 36% of our

revenue, respectively. No other single customer accounted for more than 10% of our revenues in 2020 or 2019.

Oxy amounted to 35% of our accounts receivable as of December 31, 2020 and 35% of our accounts receivable as of December 31, 2019. No
other customers amounted to more than 10% of our accounts receivable as of December 31, 2020 and 2019. The loss of this key customer would have a
material adverse effect on our business, financial condition, results of operations and cash flows, depending upon the demand for our compressors at the
time of such loss and our ability to attract new customers.

Sales and Marketing

Our  sales  force  pursues  the  rental  and  sales  market  for  compressors  and  flare  equipment  and  other  services  in  their  respective
territories.  Additionally, our personnel coordinate with each other to develop relationships with customers who operate in multiple regions.  Our sales and
marketing strategy is focused on communication with current customers and potential customers through frequent direct contact, technical assistance, print
literature,  direct  mail  and  referrals.    Our  sales  and  marketing  personnel  coordinate  with  our  operations  personnel  in  order  to  promptly  respond  to  and
address  customer  needs.    Our  overall  sales  and  marketing  efforts  concentrate  on  demonstrating  our  commitment  to  enhancing  the  customer’s  cash  flow
through enhanced product design, fabrication, manufacturing, installation, operations, customer service and support.

Competition

We have a number of competitors in the natural gas compression segment, some of which have greater financial resources.  We believe that we
compete effectively on the basis of price, customer service, including the ability to place personnel in remote locations, flexibility in meeting customer
needs, and quality and reliability of our compressors and related services.

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Compressor  industry  participants  can  achieve  significant  advantages  through  increased  size  and  geographic  breadth.   As  the  number  of  rental
compressors in our rental fleet increases, the number of sales, support, and maintenance personnel required and the minimum level of inventory do not
increase proportionately.

Backlog

As  of  December  31,  2020,  we  had  a  sales  backlog  of  approximately  $1.4  million  compared  to  $2.2  million  as  of  December  31,  2019.    Sales
backlog consists of firm customer orders for which a purchase or work order has been received, satisfactory credit or a financing arrangement exists, and
delivery is scheduled.  In addition, the major components of our compressors are acquired from suppliers through periodic purchase orders that currently
require two to three months of lead time prior to delivery of the order.

Employees

As of December 31, 2020, we had 229 total employees, none of which are represented by a labor union. We believe we have good relations with

our employees.

Liability and Other Insurance Coverage

Our equipment and services are provided to customers who are subject to hazards inherent in the oil and natural gas industry, such as explosions,
fires, and oil spills.  We maintain liability insurance that we believe is customary in the industry and which includes environmental cleanup, but excludes
product warranty insurance because the majority of components on our compressor unit are covered by the manufacturers.  We also maintain insurance
with respect to our facilities.  Based on our historical experience, we believe that our insurance coverage is adequate.  However, there is a risk that our
insurance may not be sufficient to cover any particular loss or that insurance may not cover all losses.  In addition, insurance rates have in the past been
subject to wide fluctuation, and changes in coverage could result in less coverage, increases in cost or higher deductibles and retentions.

Government Regulation

All of our operations and facilities are subject to numerous federal, state, foreign and local laws, rules and regulations related to various aspects of

our business, including containment and disposal of hazardous materials, oilfield waste, and other waste materials.

To date, we have not been required to expend significant resources in order to satisfy applicable environmental laws and regulations.  We do not
anticipate  any  material  capital  expenditures  for  environmental  control  facilities  or  extraordinary  expenditures  to  comply  with  environmental  rules  and
regulations in the foreseeable future.  However, compliance costs under existing laws or under any new requirements could become material and we could
incur liabilities for noncompliance.

Our business is generally affected by political developments and by federal, state, foreign and local laws and regulations, which relate to the oil
and  natural  gas  industry.   The  adoption  of  laws  and  regulations  affecting  the  oil  and  natural  gas  industry  for  economic,  environmental  and  other  policy
reasons  could  increase  our  costs  and  could  have  an  adverse  effect  on  our  operations.    The  state  and  federal  environmental  laws  and  regulations  that
currently apply to our operations could become more stringent in the future.

We have utilized operating and disposal practices that were or are currently standard in the industry.  However, materials such as solvents, thinner,
waste paint, waste oil, wash down waters and sandblast material may have been disposed of or released in or under properties currently or formerly owned
or operated by us or our predecessors.  In addition, some of these properties have been operated by third parties over whom we have no control either as to
such entities' treatment of materials or the manner in which such materials may have been disposed of or released.

The federal Comprehensive Environmental Response Compensation and Liability Act of 1980, commonly known as CERCLA, and comparable

state statutes impose strict liability on:

•

•

owners and operators of sites, and

persons who disposed of or arranged for the disposal of "hazardous substances" found at sites.

5

The  modification  of  existing  laws  or  regulations  or  the  adoption  of  new  laws  or  regulations  that  result  in  the  curtailment  of  exploratory  or
developmental drilling for oil and gas could materially and adversely affect our operations by discouraging our customers from drilling for hydrocarbons,
disrupting revenue through permitting or similar delays. For example, on January 20, 2021, the Acting Secretary for the Department of the Interior signed
an order effectively suspending new fossil fuel leasing and permitting on federal lands, including in the US Gulf of Mexico, for 60 days. Then on January
27, 2021, President Biden issued an executive order indefinitely suspending new oil and natural gas leases on public lands or in offshore waters pending
completion of a comprehensive review and reconsideration of federal oil and gas permitting and leasing practices. Demand for our compression products
and  services  could  be  diminished  in  connection  with  these  initiatives.  Further,  to  the  extent  that  the  review  results  in  the  development  of  additional
restrictions  on  exploration  and  drilling,  limitations  on  the  availability  of  leases,  or  restrictions  on  the  ability  to  obtain  required  permits,  it  could  have  a
material adverse impact on our operations by reducing our customers’ compression needs and the demand for our services.

Further, President Biden has announced that he intends to take aggressive action to address climate-related issues and to set the United States on a
path to be carbon-neutral by 2050. Among these developments at the international level is the United Nations Framework Convention on Climate Change,
which produced the “Kyoto Protocol”. More recently, in December 2015, 195 countries adopted under the Framework Convention a resolution known as
the “Paris Agreement” to reduce emissions of greenhouse gases with a goal of limiting global warming to below 2°C (36°F). The Paris Agreement does not
establish enforceable emissions reduction targets, but countries may establish greenhouse gas reduction measures pursuant to the agreement. The agreement
went into effect in November 2016. The United States ratified the Paris Agreement in September 2016 but withdrew in November 2020. President Biden
has since signed an order to rejoin the Paris Agreement. The new President has also announced a focus on climate-related issues and a goal of setting the
United States on the path to net-zero carbon emissions by 2050.

Waste Management and Disposal

The  federal  Resource  Conservation  and  Recovery  Act  ("RCRA")  and  analogous  state  laws  and  their  implementing  regulations  govern  the
generation, transportation, treatment, storage and disposal of hazardous and non-hazardous solid wastes. During the course of our operations, we generate
wastes  (including,  but  not  limited  to,  used  oil,  antifreeze,  filters,  paints  and  solvents)  in  quantities  regulated  under  RCRA.  The  EPA  and  various  state
agencies have limited the approved methods of disposal for these types of wastes. CERCLA and analogous state laws and their implementing regulations
impose strict, and under certain conditions, joint and several liability without regard to fault or the legality of the original conduct on classes of persons
who are considered to be responsible for the release of a hazardous substance into the environment. These persons include current and past owners and
operators of the facility or disposal site where the release occurred and any company that transported, disposed of, or arranged for the transport or disposal
of the hazardous substances released at the site. Under CERCLA, such persons may be subject to joint and several liability for the costs of cleaning up the
hazardous substances that have been released into the environment, for damages to natural resources and for the costs of certain health studies. In addition,
where contamination may be present, it is not uncommon for neighboring landowners and other third parties to file claims for personal injury, property
damage and recovery of response costs allegedly caused by hazardous substances or other pollutants released into the environment.

We currently own or lease, and in the past have owned or leased, a number of properties that have been used in support of our operations for a
number  of  years.  Although  we  have  utilized  operating  and  disposal  practices  that  were  standard  in  the  industry  at  the  time,  hydrocarbons,  hazardous
substances, or other regulated wastes may have been disposed of or released on or under the properties owned or leased by us or on or under other locations
where such materials have been taken for disposal by companies sub-contracted by us. In addition, some of these properties may have been previously
owned or operated by third parties whose treatment and disposal or release of hydrocarbons, hazardous substances or other regulated wastes was not under
our control. These properties and the materials released or disposed thereon may be subject to CERCLA, RCRA and analogous state laws. Under such
laws, we could be required to remove or remediate historical property contamination, or to perform certain operations to prevent future contamination. We
are not currently under any order requiring that we undertake or pay for any cleanup activities. However, we cannot provide any assurance that we will not
receive any such order in the future.

The Clean Water Act ("CWA") and the Oil Pollution Act of 1990 and implementing regulations govern:

•

•

the prevention of discharges, including oil and produced water spills, and

liability for drainage into waters.

The CWA and analogous state laws impose restrictions and strict controls with respect to the discharge of pollutants, including spills and leaks of

oil and other substances, into waters of the United States. The discharge of pollutants into

6

 
 
 
regulated waters and wetlands is prohibited, except in accordance with the terms of a permit issued by the EPA or an analogous state agency. The CWA
also requires the development and implementation of spill prevention, control and countermeasures to help prevent the contamination of navigable waters
in the event of a petroleum hydrocarbon spill or leak at hydrocarbon facilities. In addition, the CWA and analogous state laws require individual permits or
coverage  under  general  permits  for  discharges  of  storm  water  runoff  from  certain  types  of  facilities.  Federal  and  state  regulatory  agencies  can  impose
administrative, civil and criminal penalties as well as other enforcement mechanisms for non-compliance with discharge permits or other requirements of
the CWA and analogous state laws and regulations. Our compression operations do not generate process wastewaters that are discharged to waters of the
U.S. However, the operations of our customers may generate such wastewaters subject to the CWA. While it is the responsibility of our customers to follow
CWA regulations and obtain proper permits, violations of the CWA may indirectly impact our operations in a negative manner.

Air Emissions

Our operations are also subject to federal, state, and local regulations. The Clean Air Act and implementing regulations and comparable state laws
and  regulations  regulate  emissions  of  air  pollutants  from  various  industrial  sources  and  also  impose  various  monitoring  and  reporting  requirements,
including  requirements  related  to  emissions  from  certain  stationary  engines,  such  as  those  on  our  compressor  units.  These  laws  and  regulations  impose
limits on the levels of various substances that may be emitted into the atmosphere from our compressor units and require us to meet more stringent air
emission standards and install new emission control equipment on all of our engines built after July 1, 2008.

For  instance,  in  2010,  the  U.S.  Environmental  Protection  Agency  (“EPA”)  published  new  regulations  under  the  CAA  to  control  emissions  of
hazardous  air  pollutants  from  existing  stationary  reciprocal  internal  combustion  engines.  In  2012,  the  EPA  proposed  amendments  to  the  final  rule  in
response to several petitions for reconsideration, which were finalized and became effective in 2013. The rule requires us to undertake certain expenditures
and  activities,  including  purchasing  and  installing  emissions  control  equipment  on  certain  compressor  engines  and/or  purchasing  certified  engines  from
complaint manufacturers.

In recent years, the EPA has lowered the National Ambient Air Quality Standard (“NAAQs”) for several air pollutants. For example, in 2013, the
EPA  lowered  the  annual  standard  for  fine  particulate  matter  from  15  to  12  micrograms  per  cubic  meter.  In  2015,  the  EPA  published  the  final  rule
strengthening the standards for ground level ozone, and the states are expected to establish revised attainment/non-attainment regions. State implementation
of  the  revised  NAAQS  could  result  in  stricter  permitting  requirements,  delay  or  prohibit  our  customers’  ability  to  obtain  such  permits,  and  result  in
increased  expenditures  for  pollution  control  equipment,  which  could  negatively  impact  our  customers’  operations  by  increasing  the  cost  of  additions  to
equipment, and negatively impact our business.

In 2012, the EPA finalized rules that establish new air emission controls for oil and natural gas production and natural gas processing operations.
Specifically, the EPA’s rule package included New Source Performance Standards to address emissions of sulfur dioxide and volatile organic compounds
(“VOCs”)  and  a  separate  set  of  emission  standards  to  address  hazardous  air  pollutants  frequently  associated  with  oil  and  natural  gas  production  and
processing activities. The rules established specific new requirements regarding emissions from compressors and controls at natural gas processing plants,
dehydrators, storage tanks and other production equipment as well as the first federal air standards for natural gas wells that are hydraulically fractured. The
EPA  has  taken  a  number  of  steps  to  amend  or  expand  on  these  regulations  since  2012.  For  example,  in  June  2016,  the  EPA  published  New  Source
Performance  Standards  that  require  certain  new,  modified  or  reconstructed  facilities  in  the  oil  and  natural  gas  sector  to  reduce  methane  gas  and  VOC
emissions. However, in a March 2017 executive order, President Trump directed the EPA to review the 2016 regulations and, if appropriate, to initiate a
rulemaking to rescind or revise them consistent with the stated policy of promoting clean and safe development of the nation’s energy resources, while at
the same time avoiding regulatory burdens that unnecessarily encumber energy production. In June 2017, the EPA published a proposed rule to stay for two
years  certain  requirements  of  the  2016  regulations,  including  fugitive  emission  requirements.    On  September  11,  2018,  the  EPA  proposed  targeted
improvements  to  the  rule,  including  amendments  to  the  rule's  fugitive  emissions  monitoring  requirements,  and  expects  to  "significantly  reduce"  the
regulatory burden of the rule in doing so. These standards, as well as any future laws and their implementing regulations, may impose stringent air permit
requirements, or mandate the use of specific equipment or technologies to control emissions. We cannot predict the final regulatory requirements or the cost
to comply with such requirements with any certainty.

We believe that our existing environmental control procedures are adequate and that we are in substantial compliance with environmental laws and
regulations, and the phasing in of emission controls and other known regulatory requirements should not have a material adverse affect on our financial
condition or operational results.  However, it is possible that future developments, such as new or increasingly strict requirements and environmental laws
and enforcement policies there under, could lead to material costs of environmental compliance by us.  While we may be able to pass on the additional cost
of

7

 
 
complying with such laws to our customers, there can be no assurance that attempts to do so will be successful.  Some risk of environmental liability and
other costs are inherent in the nature of our business, however, and there can be no assurance that environmental costs will not rise.    

To the extent that new laws or other governmental actions restrict the energy industry or impose additional environmental protection requirements
that result in increased costs to the oil and gas industry, we could be adversely affected. We cannot determine to what extent our future operations and
earnings may be affected by new legislation, new regulations or changes in existing regulations.

Occupational Safety and Health 

We are subject to the requirements of Occupational Safety and Health Administration ("OSHA") and comparable state statutes. These laws and the
implementing  regulations  strictly  govern  the  protection  of  the  health  and  safety  of  employees.  The  OSHA  hazard  communication  standard,  the  EPA
community  right-to-know  regulations  under  Title  III  of  CERCLA,  and  similar  state  statutes  require  that  we  maintain  and/or  disclose  information  about
hazardous  materials  used  or  produced  in  our  operations.  We  believe  that  we  are  in  compliance  with  these  applicable  requirements  and  with  other
comparable laws.
Patents, Trademarks and Other Intellectual Property

We believe that the success of our business depends more on the technical competence, creativity and marketing abilities of our employees than on
any  individual  patent,  trademark,  or  copyright.    Nevertheless,  as  part  of  our  ongoing  research,  development  and  manufacturing  activities,  we  may  seek
patents when appropriate on inventions concerning new products and product improvements.  Although we continue to use technology that was previously
covered by a patent and consider it useful in certain applications, we do not consider the expired patent to be material to our business as a whole.

Suppliers and Raw Materials

Fabrication of our rental compressors involves the purchase by us of engines, compressors, coolers and other components, and the assembly of
these components on skids for delivery to customer locations.  These major components of our compressors are acquired through periodic purchase orders
placed with third-party suppliers on an "as needed" basis, which typically requires a three to six month lead time with delivery dates scheduled to coincide
with  our  estimated  production  schedules.   Although  we  do  not  have  formal  continuing  supply  contracts  with  any  major  supplier,  we  believe  we  have
adequate alternative sources available.  In the past, we have not experienced any sudden and dramatic increases in the prices of the major components for
our compressors.  However, the occurrence of such an event could have a material adverse effect on the results of our operations and financial condition,
particularly if we are unable to increase our rental rates and sale prices proportionate to any such component price increases.

In  addition,  the  COVID-19  outbreak  poses  the  risk  that  our  suppliers  may  be  prevented  from  conducting  their  business  at  sufficient  levels  to
provide us with necessary equipment and supplies in a timely and sufficient amount. We have experienced no supply disruptions nor have we received any
indications that our supplies will be disrupted during this stage of the COVID-19 outbreak. To the extent we have difficulties in obtaining needed products
and supplies in a timely manner, our results of operations and financial position may be adversely affected.

Available Information

We use our website as a channel of distribution for Company information.  We make available free of charge on the Investor Relations section of
our website ( www.ngsgi.com ) our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, and Current Reports on Form 8-K.  We also make
available through our website other reports filed with or furnished to the SEC under the Securities Exchange Act of 1934, as amended, including our proxy
statements and reports filed by officers and directors under Section 16(a) of the Exchange Act, as well as our Code of Business Ethics and the charters to
our various Committees of our Board of Directors.   Paper copies of our filings are also available, without charge upon written request. Please mail requests
to Natural Gas Services Group, Inc., 404 Veterans Airpark Lane, Suite 300, Midland, TX 79705. The information contained on our website is not part of
this Report.

8

ITEM 1A.    RISK FACTORS

You should carefully consider the following risks associated with owning our common stock.  Although the risks described below are the risks that
we  believe  are  material,  they  are  not  the  only  risks  relating  to  our  industry,  our  business  and  our  common  stock.   Additional  risks  and  uncertainties,
including those that we have not yet identified or that we currently believe are immaterial, may also adversely affect our business, financial condition or
results of operations.

Risks Associated With Our Industry

The outbreak of COVID-19 and recent oil market developments could adversely impact our financial condition and results of operations.

On  January  30,  2020,  the  World  Health  Organization  (“WHO”)  announced  a  global  health  emergency  because  of  a  new  strain  of  coronavirus
known  as  COVID-19  due  to  the  risks  it  imposes  on  the  international  community  as  the  virus  spreads  globally.  In  March  2020,  the  WHO  classified  the
COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. During this time, the market began to experience a decline in oil
prices in response to oil demand concerns due to the global economic impacts of COVID-19. These developments have led to significant weakness in oil
prices  and  ensuing  reductions  of  E&P  company  capital  and  operating  budgets.  If  economic  and  industry  conditions  do  not  improve,  these  events  will
adversely impact our financial condition and results of operations in 2021 and perhaps beyond, as further discussed in risk factors below.

In addition, the spread of the virus into our workforce could prevent us meeting the demands of our customers and adequately servicing existing
compressors. Similarly, if our customers or suppliers experience adverse business consequences due to COVID-19, demand for our equipment and services
could also be adversely affected. The magnitude and duration of potential social, economic and labor instability as a direct result of COVID-19 cannot be
estimated at this time. Should any of these potential impacts continue for an extended period of time, the impact on our business could have an adverse
effect on our financial position and results of operations.

Adverse macroeconomic and business conditions may significantly and negatively affect our results of operations.

As  a  result  of  the  COVID-19  outbreak  discussed  above  and  other  economic  conditions  in  the  United  States  and  abroad,  our  revenue  and
profitability  has  been  and  will  likely  continue  to  be  adversely  affected.  The  condition  of  domestic  and  global  financial  markets,  relatively  low  oil  and
natural gas prices, and the potential for disruption and illiquidity in the credit markets could have an adverse effect on our operating results and financial
condition, and if sustained for an extended period, such adverse effects could also become significant.  Uncertainty and turmoil in the credit markets may
negatively impact the ability of our customers to finance purchases of our products and services and could result in a decrease in, or cancellation of, orders
included in our backlog or adversely affect the collectability of our receivables. If the availability of credit to our customers is reduced, they may reduce
their drilling and production expenditures, thereby decreasing demand for our products and services, which could have a negative impact on our financial
condition.  A  prolonged  period  of  depressed  prices  for  oil  and  natural  gas  would  likely  result  in  delays  or  cancellation  of  projects  by  our  customers,
reducing the demand for our products and services.

Decreased oil and natural gas prices and oil and gas industry expenditure levels adversely affect our revenue.

Our revenue is derived primarily from expenditures in the oil and natural gas industry, which, in turn, are based on budgets to explore for, develop
and produce oil and natural gas.  When these expenditures decline, as they have at various times during the past several years, our revenue will suffer.  The
industry’s  willingness  to  explore  for,  develop  and  produce  oil  and  natural  gas  depends  largely  upon  the  prevailing  view  of  future  oil  and  natural  gas
prices.  Prices for oil and natural gas historically have been, and are likely to continue to be, highly volatile.  Many factors affect the supply and demand for
oil and natural gas and, therefore, influence oil and natural gas prices, including:

•

•

•

•

•

•

the level of oil and natural gas production;

the level of oil and natural gas inventories;

domestic and worldwide demand for oil and natural gas;

the expected cost of developing new reserves;

the cost of producing oil and natural gas;

the level of drilling and completions activity;

9

•

•

•

•

•

•

•

•

•

inclement weather;

domestic and worldwide economic activity;

regulatory and other federal and state requirements in the United States;

the ability of the Organization of Petroleum Exporting Countries, national oil companies and other large producers to set and maintain production
levels and prices for oil;

political conditions in or affecting oil and natural gas producing countries;

terrorist activities in the United States and elsewhere;

the cost of developing alternate energy sources;

environmental regulation; and

tax policies.

Because of the significant reductions in the market prices of oil and natural gas in 2020, many companies developing oil and natural gas reserves
have curtailed or canceled their drilling programs, thereby reducing demand for our equipment and services.  Our rental contracts are generally short-term,
and oil and natural gas companies tend to respond quickly to upward or downward changes in prices.  Any prolonged reduction in drilling and production
activities historically has reduced our compressor sales and materially eroded both rental pricing and utilization rates for our equipment and services and
adversely  affects  our  financial  results.    As  a  result  of  any  such  prolonged  reductions,  we  may  suffer  losses,  be  unable  to  make  necessary  capital
expenditures and be unable to meet our financial obligations.

The intense competition in our industry could result in reduced profitability and loss of market share for us.

We compete with the oil and natural gas industry’s largest equipment and service providers who have greater name recognition than we do.  These
companies  also  have  substantially  greater  financial  resources,  larger  operations  and  greater  budgets  for  marketing,  research  and  development  than  we
do.  They may be better able to compete because of their broader geographic dispersion and ability to take advantage of international opportunities, the
greater  number  of  compressors  in  their  fleet  or  their  product  and  service  diversity.    As  a  result,  we  could  lose  customers  and  market  share  to  those
competitors.  These companies may also be better positioned than us to successfully endure downturns in the oil and natural gas industry.

Our operations may be adversely affected if our current competitors or new market entrants introduce new products or services with better prices,
features,  performance  or  other  competitive  characteristics  than  our  products  and  services.    Competitive  pressures  or  other  factors  also  may  result  in
significant  price  competition  that  could  harm  our  revenue  and  our  business.    Additionally,  we  may  face  competition  in  our  efforts  to  acquire  other
businesses.

A reduction in demand for oil could adversely affect our business.

Our results of operations depend upon the level of activity in the energy market, including oil development, production, and transportation. Oil
and  natural  gas  prices  and  the  level  of  drilling  and  exploration  activity  can  be  volatile.  For  example,  oil  and  natural  gas  exploration  and  development
activity and the number of well completions typically decline when there is a significant reduction in oil and natural gas prices such as have occurred in
2020. As a result, the demand for our natural gas compression services will be adversely affected. A reduction in demand has, and could continue to, force
us  to  reduce  our  pricing  substantially.  Additionally,  our  customers’  production  from  oil-weighted  reserves  constitutes  the  majority  percentage  of  our
business.  These unconventional sources are generally less economically feasible to be developed in low oil price environments. A decline in demand for
oil and natural gas generally has an adverse effect on our business, financial condition and results of operations.

Our industry is highly cyclical, and our results of operations may be volatile.

Our industry is highly cyclical, with periods of high demand and high pricing followed by periods of low demand and low pricing.  Periods of low
demand intensify the competition in the industry and often result in rental equipment being idle for long periods of time. We have been required to enter
into lower rate rental contracts in response to market conditions and our rentals and sales revenue have decreased as a result of such conditions. Due to the
short-term nature of most of our rental contracts, changes in market conditions can quickly affect our business. As a result of the cyclicality of our industry,
we anticipate our results of operations will be volatile in the future.

10

 
Increased regulation or ban of current fracturing techniques could reduce demand for our compressors.

From time to time, for example, legislation has been proposed in Congress to amend the federal Safe Drinking Water Act (“SDWA”) to require
federal  permitting  of  hydraulic  fracturing  and  the  disclosure  of  chemicals  used  in  the  hydraulic  fracturing  process.  Further,  the  EPA  completed  a  study
finding that hydraulic fracturing could potentially harm drinking water resources under adverse circumstances such as injection directly into groundwater
or  into  production  wells  lacking  mechanical  integrity.  Further,  legislation  to  amend  the  SDWA  to  repeal  the  exemption  for  hydraulic  fracturing  (except
when diesel fuels are used) from the definition of “underground injection” and require federal permitting and regulatory control of hydraulic fracturing, as
well as legislative proposals to require disclosure of the chemical constituents of the fluids used in the fracturing process, have been proposed in recent
sessions  of  Congress.  Several  states  and  local  jurisdictions  also  have  adopted  or  are  considering  adopting  regulations  that  could  restrict  or  prohibit
hydraulic  fracturing  in  certain  circumstances,  impose  more  stringent  operating  standards  and/or  require  the  disclosure  of  the  composition  of  hydraulic
fracturing fluids. While we do not perform hydraulic fracturing, many of our customers do and their activity level drives demand for our products.

More recently, federal and state governments have begun investigating whether the disposal of produced water into underground injection wells
has caused increased seismic activity in certain areas. The results of these studies could lead federal and state governments and agencies to develop and
implement additional regulations.

A ban of hydraulic fracturing would likely halt some projects, including unconventional projects, at least temporarily. Expanded regulations are
likely  to  introduce  a  period  of  uncertainty  as  companies  determine  ways  to  proceed.   Any  curtailment  could  result  in  a  reduction  of  demand  for  our
compressors, potentially affecting both sales and rentals of our units.

We are subject to extensive environmental laws and regulations that could require us to take costly compliance actions that could harm our financial
condition.

Our  fabrication  and  maintenance  operations  are  significantly  affected  by  stringent  and  complex  federal,  state  and  local  laws  and  regulations
governing the discharge of substances into the environment or otherwise relating to environmental protection.  In these operations, we generate and manage
hazardous  wastes  such  as  solvents,  thinner,  waste  paint,  waste  oil,  wash  down  wastes,  and  sandblast  material.    We  attempt  to  use  generally  accepted
operating  and  disposal  practices  and,  with  respect  to  acquisitions,  will  attempt  to  identify  and  assess  whether  there  is  any  environmental  risk  before
completing an acquisition.  Based on the nature of the industry, however, hydrocarbons or other wastes may have been disposed of or released on or under
properties owned or leased by us or on or under other locations where such wastes have been taken for disposal.  The waste on these properties may be
subject to federal or state environmental laws that could require us to remove the wastes or remediate sites where they have been released.  We could be
exposed  to  liability  for  cleanup  costs,  natural  resource  and  other  damages  as  a  result  of  our  conduct  or  the  conduct  of,  or  conditions  caused  by,  prior
owners, lessees or other third parties.  Environmental laws and regulations have changed in the past, and they are likely to change in the future.  If current
existing regulatory requirements or enforcement policies change, we may be required to make significant unanticipated capital and operating expenditures.

Any failure by us to comply with applicable environmental laws and regulations may result in governmental authorities taking actions against our

business that could harm our operations and financial condition, including the:

•

•

•

•

issuance of administrative, civil and criminal penalties;

denial or revocation of permits or other authorizations;

reduction or cessation in operations; and

performance of site investigatory, remedial or other corrective actions.

Increasing attention to environmental, social and governance matters may impact our business, financial results and stock price.

In recent years, increasing attention has been given to corporate activities related to environmental, social and governance (“ESG”) matters in public
discourse and the investment community. A number of advocacy groups, both domestically and internationally, have campaigned for governmental and
private action to promote change at public companies related to ESG matters, including through the investment and voting practices of investment advisers,
public  pension  funds,  universities  and  other  members  of  the  investing  community.  These  activities  include  increasing  attention  and  demands  for  action
related to climate change and energy transition matters, such as promoting the use of substitutes to fossil fuel products

11

 
and encouraging the divestment of fossil fuel equities, as well as pressuring lenders and other financial services companies to limit or curtail activities with
fossil fuel companies.

Members  of  the  investment  community  have  begun  to  screen  companies  for  sustainability  performance,  including  practices  related  to  climate
change. In addition, organizations that provide information to investors on corporate governance and related matters have developed ratings systems for
evaluating  companies  on  their  approach  to  ESG  matters.  These  ratings  are  used  by  some  investors  to  inform  their  investment  and  voting  decisions.
Unfavorable  ESG  ratings  may  lead  to  increased  negative  investor  sentiment  toward  us  and  our  industry  and  to  the  diversion  of  investment  to  other
industries, which could have a negative impact on our stock price and our access to and costs of capital.

Increasing attention to climate change, increasing societal expectations on companies to address climate change, and potential consumer use of

substitutes to energy commodities may result in increased costs, reduced demand for our customers’ hydrocarbon products which will likely translate to
reduced demand for compression services, reduced profits, increased investigations and litigation, increased governmental regulations and negative impacts
on our stock price and access to capital markets.

Risks Associated With Our Company

A significant majority of our compressor rentals are for terms of six months or less which, if terminated or not renewed, would adversely impact our
revenue and our ability to recover our initial equipment costs.

The length of our compressor rental agreements with our customers varies based on customer needs, equipment configurations and geographic
area.  In most cases, under currently prevailing rental rates, the initial rental periods are not long enough to enable us to fully recoup the average cost of
acquiring or fabricating the equipment.  Of the 1,274 compressors rented at December 31, 2020, 948 were rented on a month-to-month basis. Given the
current oil and gas price environment, we cannot be sure that a substantial number of our customers will continue to renew their rental agreements or that
we will be able to re-rent the equipment to new customers or that any renewals or re-rentals will be at comparable rental rates.  The inability to timely
renew  or  re-rent  a  substantial  portion  of  our  compressor  rental  fleet  has  and  will  have  a  material  adverse  effect  upon  our  business,  financial  condition,
results of operations and cash flows.

We could be subject to substantial liability claims that could harm our financial condition.

Our products are used in production applications where an accident or a failure of a product can cause personal injury, loss of life, damage to
property,  equipment  or  the  environment,  or  suspension  of  operations.  While  we  maintain  insurance  coverage,  we  face  the  following  risks  under  our
insurance coverage:

• we may not be able to continue to obtain insurance on commercially reasonable terms;

• we may be faced with types of liabilities that will not be covered by our insurance, such as damages from significant product liabilities and from

environmental contamination;

•

the dollar amount of any liabilities may exceed our policy limits; and

• we do not maintain coverage against the risk of interruption of our business.

Any claims made under our policies will likely cause our premiums to increase.  Any future damages caused by our products or services that are
not  covered  by  insurance,  are  in  excess  of  policy  limits  or  are  subject  to  substantial  deductibles,  would  reduce  our  earnings  and  our  cash  available  for
operations.

The loss of one or more of our current customers could adversely affect our results of operations.

Our business is dependent not only on securing new customers but also on maintaining current customers. We had one customer that accounted
for  an  aggregate  of  approximately  30%  of  our  revenue  for  the  year  ended  December  31,  2020,  and  the  same  customer  accounted  for  an  aggregate  of
approximately 36% of our revenue for the year ended December 31, 2019.  At December 31, 2020, this same customer accounted for an aggregate of 35%
of  our  accounts  receivable.  Unless  we  are  able  to  retain  our  existing  customers,  or  secure  new  customers  if  we  lose  one  or  more  of  our  significant
customers, our revenue and results of operations would be adversely affected. In addition, the default on payments by our significant customer or other
important customers may negatively impact our cash flow and current assets.

12

Loss of key members of our management could adversely affect our business.

In  keeping  with  our  streamlined  approach  to  our  business,  our  executive  management  team  consists  of  three  officers:  our  (i)  Chief  Executive
Officer, (ii) Chief Financial Officer and (iii) Vice President of Technical Services. We depend on the continued employment and performance of these three
key members of our executive management team. In particular, we are significantly reliant upon the leadership and guidance of Stephen C. Taylor, who has
been our President, Chief Executive Officer and Board member since 2004. In addition to his management duties, Mr. Taylor has been instrumental in our
communications and standing with the investment community. If any of our key executives resign, such as the recent resignation of our Chief Financial
Officer, or become unable to continue in his present role and is not adequately replaced, our business operations could be materially adversely affected.  We
do not carry any key-man insurance on any of our officers or directors.

The erosion of the financial condition of our customers could adversely affect our business.

Many  of  our  customers  finance  their  exploration  and  development  activities  through  cash  flow  from  operations,  the  incurrence  of  debt  or  the
issuance of equity. During times when the oil or natural gas markets are weak, such as now, our customers are more likely to experience a downturn in their
financial condition. Many of our customers’ equity values and liquidity substantially declined during the most recent fall in oil and natural gas prices, and
in some cases access to capital markets may be an unreliable source of financing for some customers. The combination of a reduction in cash flow resulting
from  declines  in  commodity  prices,  a  reduction  in  borrowing  bases  under  reserve-based  credit  facilities  and  the  lack  of  availability  of  debt  or  equity
financing may result in a reduction in our customers’ spending for our products and services in 2021. For example, our customers could seek to preserve
capital  by  canceling  month-to-month  contracts,  canceling  or  delaying  scheduled  maintenance  of  their  existing  natural  gas  compression  equipment  or
determining not to enter into any new natural gas compression service contracts or purchase new compression equipment.

We might be unable to employ qualified technical personnel, which could hamper our present operations or increase our costs.

Many of the compressors that we sell or rent are mechanically complex and often must perform in harsh conditions.  We believe that our success
depends upon our ability to employ and retain a sufficient number of technical personnel who have the ability to design, utilize, enhance and maintain these
compressors.  Our ability to maintain and expand our operations depends in part on our ability to utilize and increase our skilled labor force.  The demand
for skilled workers is high, and supply is limited.  A significant increase in the wages paid by competing employers could result in a reduction of our skilled
labor force or cause an increase in the wage rates that we must pay or both.  If either of these events were to occur, our cost structure could increase and our
operations and growth potential could be impaired.

We may require a substantial amount of capital to expand our compressor rental fleet and grow our business.

During  2021,  the  amount  we  will  spend  on  capital  expenditures  related  to  rental  compression  equipment  will  be  determined  primarily  by  the
activity of our customers. The amount and timing of any capital expenditures may vary depending on a variety of factors, including the level of activity in
the  oil  and  natural  gas  exploration  and  production  industry  and  the  presence  of  alternative  uses  for  our  capital,  including  any  acquisitions  that  we  may
pursue.

During the past year, we funded our capital expenditures through cash flows from operations. Although we believe that cash on hand and cash
flows from our operations and/or potential bank borrowing from our anticipated line of credit (see below) will provide us with sufficient cash to fund our
planned capital expenditures for 2021, we cannot assure you that these sources will be sufficient.  We may require additional capital to fund any significant
unanticipated capital expenditures, such as a material acquisition. To the extent we would require any necessary capital, it may not be available to us when
we need it or on acceptable terms.  Our ability to raise additional capital will depend on the results of our operations and the status of various capital and
industry markets at the time we seek such capital.  Failure to generate sufficient cash flow, together with the absence of alternative sources of capital, could
have a material adverse effect on our business, financial condition, results of operations or cash flow.

Our prior $30.0 million line of credit with JP Morgan Chase Bank, under which we owed $417,000 as of December 31, 2020, expired on March
31,  2021.  On  March  17,  2021,  we  repaid  our  outstanding  principal  balance  and  unpaid  interest  is  due  on  March  31,  2021.    We  are  in  the  process  of
negotiating  a  new  line  of  credit  and,  although  we  believe  that  we  will  be  able  to  obtain  a  new  line  of  credit  with  another  lender,  we  can  provide  no
assurance  that  we  will  be  successful  in  obtaining  a  new  line.    In  addition,  any  creation  of  a  new  line  of  credit  may  be  on  terms  less  favorable  that  our
existing line.  For

13

 
instance, changes in the terms of a new line of credit may include, but not be limited to:  a reduction in the borrowing amount, an increase in interest rate to
be paid on borrowings under the line, or restrictive covenants that are more onerous than those on our existing line of credit.

Our debt levels may negatively impact our current and future financial stability.

Should we utilize our full debt capacity, growth beyond that point could be impacted. As a result of our  indebtedness at any given point in time,
we might not have the ability to incur any substantial additional indebtedness.  The level of our indebtedness could have several important effects on our
future operations, including:

•

•

•

our ability to obtain additional financing for working capital, acquisitions, capital expenditures and other purposes may be limited;

a significant portion of our cash flow from operations may be dedicated to the payment of principal and interest on our debt, thereby reducing
funds available for other purposes; and

our leverage if increased to an unacceptable level, could make us more vulnerable to economic downturns.

If we are unable to service our debt, we will likely be forced to take remedial steps that are contrary to our business plan.

As noted above, our existing line of credit expired on March 31, 2021. Notwithstanding, we are in the process of negotiating a new line of credit
which we anticipate will be in place by the end of April 2021, although we cannot guarantee that we will be successful in obtaining the new line of credit.
We believe that our current cash position and anticipated cash flow from operations and the potential amount available under a new line of credit will be
sufficient to meet our capital needs through 2021. However, if we are unable to obtain a new line of credit or were to materially increase our borrowings
under a new line of credit or other borrowing arrangements, it is possible that our business will not generate sufficient cash flow from operations to meet
any debt service requirements and the payment of principal when due depending on the amount of borrowings at any given time.  If this were to occur, we
may be forced to:

•

•

•

sell assets at disadvantageous prices;

obtain additional financing; or

refinance all or a portion of our indebtedness on terms that may be less favorable to us.

We anticipate that any new credit agreement will contain covenants that limit our operating and financial flexibility and, if breached, could expose us
to severe remedial provisions.

If  we  are  successful  in  obtaining  a  new  bank  line  of  credit  or  similar  borrowing  arrangement,  such  arrangement  will  likely  contain  terms  that

require us to:

•

•

•

•

•

comply various leverage, commitment coverage and other customary ratios;

not exceed specified levels of debt

comply with limits on asset sales;

comply with limits on cash dividends;

and other customary limitations.

Our ability to meet the financial ratios and tests under a new credit facility can be affected by events beyond our control, and we may not be able
to  satisfy  those  ratios  and  tests.   A  breach  of  any  one  of  these  potential  covenants  or  requirements  could  permit  the  lending  organization  to  accelerate
outstanding amounts so that it is immediately due and payable.  If a breach occurs, further borrowings will likely be unavailable under any such credit
arrangement.  If we are unable to repay any outstanding amounts, the lending organization could proceed against and foreclose on the assets we pledge as
collateral to secure the loan, which will likely be a significant portion or substantially all of our assets.

If we fail to acquire or successfully integrate additional businesses, our growth may be limited and our results of operations may suffer.

As part of our business strategy, we evaluate potential acquisitions of other businesses or assets.  However, there can be no assurance that we will
be  successful  in  consummating  any  such  acquisitions.    Successful  acquisition  of  businesses  or  assets  will  depend  on  various  factors,  including,  but  not
limited to, our ability to obtain financing and the competitive

14

environment  for  acquisitions.    In  addition,  we  may  not  be  able  to  successfully  integrate  any  businesses  or  assets  that  we  acquire  in  the  future.    The
integration  of  acquired  businesses  is  likely  to  be  complex  and  time  consuming  and  place  a  significant  strain  on  management  and  may  disrupt  our
business.  We also may be adversely impacted by any unknown liabilities of acquired businesses, including environmental liabilities.  We may encounter
substantial  difficulties,  costs  and  delays  involved  in  integrating  common  accounting,  information  and  communication  systems,  operating  procedures,
internal  controls  and  human  resources  practices,  including  incompatibility  of  business  cultures  and  the  loss  of  key  employees  and  customers.    These
difficulties may reduce our ability to gain customers or retain existing customers, and may increase operating expenses, resulting in reduced revenues and
income and a failure to realize the anticipated benefits of acquisitions.

Failure to effectively manage our business and growth could adversely affect our operating results and our internal controls.

Our strategy envisions the expansion and growth of our business, subject to the demand for oil and gas and the impact of the other risks set forth in
this risk factor section and elsewhere in this Report. Growth may place a strain on our management systems and resources. We must continue to refine and
expand our business capabilities, our systems and processes, and our access to financing sources. If we expand, we must continue to hire, train, supervise
and manage new employees. We cannot assure that we will be able to:

• meet our capital needs;

•

•

•

upgrade and expand our office and manufacturing infrastructure so that it is appropriate for our level of activity;

expand our systems effectively or efficiently or in a timely manner, including financial and management controls, reporting systems and
procedures; and

attract, hire, train and retain additional highly skilled and motivated officers and employees and allocate our human resources optimally.

If we are unable to manage our growth, our financial conditions and results of operations may be adversely affected.

Liability to customers under warranties and indemnification provisions may materially and adversely affect our results of operations.

We provide warranties as to the proper operation and conformance to specifications of the equipment we manufacture.  Our equipment is complex
and  often  deployed  in  harsh  environments.    Failure  of  this  equipment  to  operate  properly  or  to  meet  specifications  may  increase  our  costs  by  requiring
additional engineering resources and services, replacement of parts and equipment or monetary reimbursement to a customer.  We have in the past received
warranty  claims  and  we  expect  to  continue  to  receive  them  in  the  future.    To  the  extent  that  we  incur  substantial  warranty  claims  in  any  period,  our
reputation, our ability to obtain future business and our results of operations could be materially and adversely affected.

Our rental and sales contracts provide for varying forms of indemnification from our customers and in most cases may require us to indemnify our
customers. Under some of our rental and sales contracts, liability with respect to personnel and property is customarily assigned on a “knock-for-knock”
basis, which means that we and our customers assume liability for our respective personnel and property.  However, in certain rental and sales contracts we
assume  liability  for  damage  to  our  customer’s  property  and  other  third-party  on  the  site  resulting  from  our  negligence.    Since  our  products  are  used  in
production applications in the energy industry, expenses and liabilities in connection with accidents involving our products and services could be extensive
and may exceed our insurance coverages.

Our income taxes may change.

We are subject to income tax on a jurisdictional or legal entity basis and significant judgment is required in certain instances to allocate our taxable
income to a jurisdiction and to determine the related income tax expense and benefits. Losses in one jurisdiction generally may not be used to offset profits
in other jurisdictions. As a result, changes in the mix of our earnings (or losses) between jurisdictions, among other factors, could alter our overall effective
income tax rate, possibly resulting in significant tax rate increases.

We are regularly audited by various tax authorities. Income tax audit assessments or changes in tax laws, regulations, or other interpretations may
result in increased tax provisions which could materially affect our operating results in the period or periods in which such determinations are made or
changes occur.

15

 
 
 
Failure to maintain effective internal controls could have a material adverse effect on our operations.

Section  404  of  the  Sarbanes-Oxley  Act  requires  annual  management  assessments  of  the  effectiveness  of  our  internal  control  over  financial
reporting.  If we fail to maintain effective internal controls, we may not be able to ensure that we can conclude on an ongoing basis that we have effective
internal controls over financial reporting in accordance with Section 404 of the Sarbanes-Oxley Act. Moreover, effective internal controls are necessary for
us to produce reliable financial reports and to help prevent financial fraud.  If, as a result of deficiencies in our internal controls, we cannot provide reliable
financial reports or prevent fraud, our business decision process may be adversely affected, our business and operating results could be harmed, investors
could lose confidence in our reported financial information, and the price of our stock could decrease as a result.

In its Section 404 assessments, management has noted a material weakness in internal control over financial reporting in each of the prior two
years. During the year ended December 31, 2018, management noted a material weakness related to our accounting and reporting of income taxes. During
the  year  ended  December  31,  2019,  management  noted  another  material  weakness  related  to  our  accounting  and  reporting  of  compressor  "make-ready"
jobs, as well as various other compressor maintenance jobs, that were not recorded in a timely manner. As of December 31, 2020, based upon our most
recent assessment of internal controls, management believes it has remediated these material weaknesses. Please see Item 9A, Controls and Procedures,
Material Weaknesses in Internal Control over Financial Reporting.

We are exposed to risks related to Computer systems failures or cyber security threats

In the conduct of our business we are dependent upon our computing systems and those of third parties to collect, store, transmit and process data
used in our operational activities and to record, process and track financial transactions. If interruptions were to occur we would be unable to access these
systems for a period of time and there is a risk of data loss. Data backup and storage measures are in place that would allow recovery in a time frame that
we believe would not materially impact our ability to conduct business.

We are also subject to cyber security attacks and have taken steps to minimize the probability of an attack penetrating our systems. These include

network security, virus protection, filtering software and intrusion protection measures.

Risks Associated With Our Common Stock

The price of our common stock may fluctuate.

The trading price of our common stock and the price at which we may sell securities in the future are subject to substantial fluctuations in response
to  various  factors,  including  our  ability  to  successfully  accomplish  our  business  strategy,  the  trading  volume  of  our  stock,  changes  in  governmental
regulations, actual or anticipated variations in our quarterly or annual financial results, our involvement in litigation, general market conditions, the prices
of oil and natural gas, announcements by us and our competitors, our liquidity, our ability to raise additional funds, and other events such as those discussed
in the factors above.

Future sales of our common stock could adversely affect our stock price.

Substantial sales of our common stock in the public market, or the perception by the market that those sales could occur, may lower our stock

price or make it difficult for us to raise additional equity capital in the future. According to filings made with the Securities and Exchange Commission in
February 2021, an aggregate of approximately 27.9% of the outstanding shares of our common stock are owned by four institutional investors, each of
which owns more than 5% of our outstanding shares as of the date of their respective filings in February 2021. Potential sales of large amounts of these
shares in a short period of time by one or more of these significant investors could have a negative impact on our stock price. In addition, potential sales of
our common stock by our directors and officers, who beneficially own approximately 6.8% of the outstanding shares of our common stock as of March 26,
2021, and because of the negative perception of sales by insiders, could also have a negative impact on our stock price.

We have a comparatively low number of shares of common stock outstanding and, therefore, our common stock may suffer from limited liquidity and
its prices will likely be volatile and its value may be adversely affected.

Because  of  our  relatively  low  number  of  outstanding  shares  of  common  stock,  the  trading  price  of  our  common  stock  will  likely  be  subject  to
significant price fluctuations and limited liquidity.  This may adversely affect the value of your investment.  In addition, our common stock price is subject
to fluctuations in response to variations in quarterly operating

16

     
results, changes in management, future announcements concerning us, general trends in the industry and other events or factors such as those described
above.

If we issue debt or equity securities, you may lose certain rights and be diluted.

If we raise funds in the future through the issuance of debt or equity securities, the securities issued may have rights and preferences and privileges
senior to those of holders of our common stock, and the terms of the securities may impose restrictions on our operations or dilute your ownership in our
Company.

We currently have on file with the SEC an effective "universal" shelf registration statement on Form S-3, which enables us to sell, from time to
time, our common stock and other securities covered by the registration statement in one or more public offerings. The shelf registration statement allows
us to enter the public markets and consummate sales of the registered securities in rapid fashion and with little or no notice. Issuances of securities under
our shelf registration statement may dilute our existing shareholders.

If securities analysts downgrade our stock or cease coverage of us, the price of our stock could decline.

The  trading  market  for  our  common  stock  relies  in  part  on  the  research  and  reports  that  industry  or  financial  analysts  publish  about  us  or  our
business.   We  do  not  control  these  analysts.    Furthermore,  there  are  many  large,  well-established,  publicly  traded  companies  active  in  our  industry  and
market, which may mean that it is less likely that we will receive widespread analyst coverage.  If one or more of the analysts who do cover us downgrade
our stock, our stock price would likely decline rapidly.  If one or more of these analysts cease coverage of our company, we could lose visibility in the
market, which in turn could cause our stock price to decline.

Provisions contained in our governing documents could hinder a change in control of us.

Our articles of incorporation and bylaws contain provisions that may discourage acquisition bids and may limit the price investors are willing to

pay for our common stock.  Our articles of incorporation and bylaws provide that:

•

•

•

•

directors are elected for three-year terms, with approximately one-third of the board of directors standing for election each year;

cumulative voting is not allowed, which limits the ability of minority shareholders to elect any directors;

the unanimous vote of the board of directors or the affirmative vote of the holders of not less than 80% of the votes entitled to be cast by the
holders of all shares entitled to vote in the election of directors is required to change the size of the board of directors; and

directors may be removed only for cause or by the holders of not less than 80% of the votes entitled to be cast on the matter.

Our  Board  of  Directors  has  the  authority  to  issue  up  to  five  million  shares  of  preferred  stock.  The  Board  of  Directors  can  fix  the  terms  of  the
preferred  stock  without  any  action  on  the  part  of  our  shareholders.  The  issuance  of  shares  of  preferred  stock  may  delay  or  prevent  a  change  in  control
transaction. In addition, preferred stock could be used in connection with the Board of Directors’ adoption of a shareholders’ rights plan (also known as a
poison pill), which would make it much more difficult to effect a change in control of our Company through acquiring or controlling blocks of stock.  Also,
our directors and officers as a group will continue to beneficially own stock and although this is not a majority of our stock, it confers substantial voting
power  in  the  election  of  directors  and  management  of  our  Company. This  would  make  it  difficult  for  other  minority  shareholders  to  effect  a  change  in
control or otherwise extend any significant control over our management. This may adversely affect the market price and interfere with the voting and other
rights of our common stock.

ITEM 1B.    UNRESOLVED STAFF COMMENTS

None.

17

ITEM 2.    PROPERTIES

The table below describes the material facilities owned or leased by Natural Gas Services Group as of December 31, 2020:

Location

Tulsa, Oklahoma
Midland, Texas
Lewiston, Michigan
Midland, Texas
Bloomfield, New Mexico
Godley, Texas
Galeton, Colorado
Bridgeport, Texas
Midland, Texas
Vernal, Utah
Carrollton, Ohio
Wheeler, Texas
Grapevine, Texas

Status
Owned and Leased
Owned
Owned
Owned
Owned
Leased
Leased
Leased
Owned
Leased
Leased
Leased
Leased

Square Feet

Uses

91,780  Compressor fabrication, rental and services
70,000  Compressor fabrication, rental and services
15,360  Compressor fabrication, rental and services
45,000  Corporate office

7,000  Office and parts and services
5,000  Parts and services
4,800  Parts and services
4,500  Office and parts and services
4,100  Parts and services
3,200  Parts and services
2,600  Parts and services
2,160  Parts and services

800  Sales

We believe that our properties are generally well maintained and in good condition and adequate for our purposes.

ITEM 3.    LEGAL PROCEEDINGS

From time to time, we are a party to various legal proceedings in the ordinary course of our business.  While management is unable to predict
the  ultimate  outcome  of  these  actions,  it  believes  that  any  ultimate  liability  arising  from  these  actions  will  not  have  a  material  effect  on  our  financial
position, results of operations or cash flow.  We are not currently a party to any bankruptcy, receivership, reorganization, adjustment or similar proceeding,
and we are not aware of any threatened litigation.

ITEM 4.    MINE SAFETY DISCLOSURES

Not applicable.

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND

ISSUER PURCHASES OF EQUITY SECURITIES

PART II

Our common stock currently trades on the New York Stock Exchange under the symbol “NGS”. As of December 31, 2020  as reflected by our
transfer agent records, we had 16 record holders of our common stock.  This number does not include any beneficial owners for whom shares of common
stock may be held in “nominee” or “street” name. On March 26, 2021, the last reported sale price of our common stock as reported by the New York Stock
Exchange was $9.15 per share.

18

 
 
 
 
 
 
 
  The  following  graph  shows  a  five  year  comparison  of  the  cumulative  total  stockholder  return  on  our  common  stock  as  compared  to  the
cumulative total return of two other indexes: a custom composite index of the Philadelphia Oil Service Index and the Standard & Poor’s 500 Composite
Stock Price Index. These comparisons assume an initial investment of $100 and the reinvestment of dividends.

The performance graph shall not be deemed incorporated by reference by any general statement incorporating by reference this Annual Report on
Form 10-K into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that we specifically incorporate this
information by reference, and shall not otherwise be deemed filed under those Acts.

Dividends

To  date,  we  have  not  declared  or  paid  any  dividends  on  our  common  stock.  We  currently  do  not  anticipate  paying  a  cash  dividend  on  our
common stock.  Although we intend to retain our earnings, if any, to finance the growth of our business, our Board of Directors will have the discretion to
declare and pay dividends in the future. Payment of dividends in the future will depend upon our earnings, capital requirements, and other factors, which
our Board of Directors may deem relevant.  Our credit agreement also contains restrictions on our paying dividends under certain circumstances.

19

Equity Compensation Plans

The following table summarizes certain information regarding our equity compensation plans as of December 31, 2020:

Equity compensation plans approved by security holders:

Plan Category

Stock Option Plan
Restricted Stock / Unit Plan 
2019 Equity Incentive Plan

(2)

Total

(a)
Number of securities to
vest or be issued upon
exercise of outstanding
options

(b)
Weighted-average
issuance or exercise
price of
outstanding options

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

(1)

161,334 
34,899 
223,202 
419,435 

$
$
$

24.48 
24.55 
11.04 

384,503 
— 
200,141 
584,644 

(1)    Total number of shares to be issued upon exercise of options granted to employees, officers, and directors under our 1998 Stock Option Plan.

(2)     The Restricted Stock/Unit Plan expired on June 20, 2019. The outstanding shares/units as of December 31, 2020, will vest in 2021 assuming the
participant remains employed up to the vesting date, subject to acceleration under certain circumstances.

Stock Repurchase Program

On  August  12,  2019,  the  Company  announced  the  Board  of  Directors  had  authorized  the  repurchase  of  up  to  $10.0  million  of  its  outstanding
shares of common stock in the open market, block trades or privately negotiated transactions. The timing and extent of any repurchase is subject to the
discretion  of  management  and  is  dependent  upon  market  pricing  and  conditions,  business,  legal,  accounting  and  other  considerations.  The  repurchase
program does not obligate the Company to purchase any shares and was set to expire on September 30, 2020, subject to earlier termination of the program
by the Board of Directors. On October 23, 2020, the Board of Directors authorized the extension of the repurchase program through September 30, 2021.
The  repurchase  program  may  be  modified,  suspended  or  terminated  at  any  time  without  notice,  in  the  Company’s  discretion,  based  upon  a  number  of
factors, including market conditions, the cost of repurchasing shares, the availability of alternative investment opportunities, liquidity, the need for capital
in the Company’s operations and other factors deemed appropriate. The Company intends to finance the repurchases with existing liquidity and free cash
flow. To date, the Company repurchased 37,936 of its outstanding shares of common stock with a value of $490,000, at an average price of $12.91. No
repurchases  were  made  during  2020.  As  of  December  31,  2020,  the  Company  had  approximately  $9.5  million  remaining  under  the  repurchase
authorization.

Sale of Unregistered Securities

We made no sales of unregistered securities during the year ended December 31, 2020.

20

 
 
 
 
 
 
 
 
 
 
ITEM 6.     SELECTED FINANCIAL DATA

Not applicable.

ITEM 7.     MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion is intended to assist you in understanding our financial position and results of operations for each of the years ended
December 31, 2020 and 2019.  You should read the following discussion and analysis in conjunction with our audited financial statements and the related
notes.

The  following  discussion  contains  forward-looking  statements.    For  a  description  of  limitations  inherent  in  forward-looking  statements,  see

“Special Note Regarding Forward-Looking Statements” on page ii.

Overview

We  fabricate,  manufacture,  rent  and  sell  natural  gas  compressors  and  related  equipment.    Our  primary  focus  is  on  the  rental  of  natural  gas
compressors.    Our  rental  contracts  generally  provide  for  initial  terms  of  six  to  60  months,  with  our  larger  horsepower  units  having  longer  initial
terms.  After the initial term of our rental contracts, most of our customers have continued to rent our compressors on a month-to-month basis.  Rental
amounts  are  billed  monthly  in  advance  and  include  maintenance  of  the  rented  compressors.    As  of  December  31,  2020,  we  had  1,274  natural  gas
compressors totaling 287,646 horsepower rented to 80 customers, compared to 1,419 natural gas compressors totaling 299,836 horsepower rented to 95
customers at December 31, 2019.  Of the 1,274 compressors rented at December 31, 2020, 948 were rented on a month-to-month basis.

We  also  fabricate  natural  gas  compressors  for  sale  to  our  customers,  designing  compressors  to  meet  unique  specifications  dictated  by  well
pressures,  production  characteristics  and  particular  applications  for  which  compression  is  sought.    Fabrication  of  compressors  involves  our  purchase  of
engines, compressors, coolers and other components, and our assembling of these components on skids for delivery to customer locations.  These major
components of our compressors are acquired through periodic purchase orders placed with third-party suppliers on an “as needed” basis, which presently
requires  a  two  to  three  month  lead  time  with  delivery  dates  scheduled  to  coincide  with  our  estimated  production  schedules.   Although  we  do  not  have
formal  continuing  supply  contracts  with  any  major  supplier,  we  believe  we  have  adequate  alternative  sources  available.    In  the  past,  we  have  not
experienced any sudden and dramatic increases in the prices of the major components for our compressors; however, the occurrence of such an event could
have a material adverse effect on the results of our operations and financial condition, particularly if we were unable to increase our rental rates and sales
prices proportionate to any such component price increases.

We also manufacture a line of compressor frames, cylinders and parts, known as our CiP (Cylinder-in-Plane) product line.  We use finished CiP
component  products  in  the  fabrication  of  compressor  units  for  sale  or  rental  by  us  or  sell  the  finished  component  products  to  other  compressor
fabricators.  We also design, fabricate, sell, install and service flare stacks and related ignition and control devices for onshore and offshore incineration of
gas compounds such as hydrogen sulfide, carbon dioxide, natural gas and liquefied petroleum gases.  To provide customer support for our compressor and
flare  sales  businesses,  we  stock  varying  levels  of  replacement  parts  at  our  Midland,  Texas  facility  and  at  field  service  locations.    We  also  provide  an
exchange and rebuild program for screw compressors and maintain an inventory of new and used compressors to facilitate this business.

We provide service and maintenance to our non-rental customers under written maintenance contracts or on an as-required basis in the absence of

a service contract.  Maintenance agreements typically have terms of six months to one year and require payment of a monthly fee.

21

The following table sets forth our revenues from each of our three operating categories for the periods presented:

Rental
Sales
Service and maintenance

Total

Year Ended December 31,
2019
2020

(in thousands)

$

$

60,826  $
5,657 
1,572 
68,055  $

56,701 
19,763 
1,980 
78,444 

Our strategy for growth is focused on our compressor rental business.  Margins, exclusive of depreciation and amortization, for our rental business
historically run in the mid-50% to low-60% range, while margins for the compressor sales business tend to be in the mid-20% range.  If our rental business
grows and contributes a larger percentage of our total revenues, we expect our overall company-wide margins, exclusive of depreciation and amortization,
to improve over time.

The  oil  and  natural  gas  equipment  rental  and  services  industry  is  cyclical  in  nature.    The  most  critical  factor  in  assessing  the  outlook  for  the
industry is the worldwide supply and demand for oil and natural gas and the corresponding changes in commodity prices.  As demand and prices increase,
oil and natural gas producers typically increase their capital expenditures for drilling, development and production activities, although recent equity capital
constraints and demands from institutional investors to keep spending within operating cash flow have meaningfully restrained capital expenditure budgets
of domestic exploration and production companies.  Generally, increased capital expenditures ultimately result in greater revenues and profits for service
and equipment companies.

In general, we expect our overall business activity and revenues to track the level of activity in the oil and natural gas industry, with changes in
crude oil and condensate production and consumption levels and prices affecting our business more than changes in domestic natural gas production and
consumption levels and prices. In recent years we have increased our rental and sales in unconventional oil shale plays, which are more dependent on crude
oil prices. With this shift towards oil production the demand for overall compression services and products is driven by two general factors; an increased
focus  by  producers  on  artificial  lift  applications,  e.g.,  production  enhancement  with  compression  assisted  gas  lift;  and  declining  reservoir  pressure  in
maturing natural gas producing fields, especially non-conventional production. These types of applications have historically been serviced by wellhead size
compressors, and continue to be, but there has also been an economic move by our customers towards centralized drilling and production facilities, which
have increased the market need for larger horsepower compressor packages. We recognized this need over the past two to three years and have shifted our
cash  and  fabrication  resources  towards  designing,  fabricating  and  renting  gas  compressor  packages  that  range  from  400  horsepower  up  to  1,380
horsepower.  While  this  is  a  response  to  market  conditions  and  trends,  it  also  provides  us  with  the  opportunity  to  compete  as  a  full-line  compression
provider.

We typically experience a decline in demand during periods of low crude oil and natural gas prices. During 2019, we witnessed a moderation of
crude oil prices as well as drilling and completion activity levels. During the first quarter of 2020, we saw a substantial decline in the prices for oil and
natural gas. Activity  levels  of  exploration  and  production  companies  have  been  and  will  be  dependent  not  only  on  commodity  prices,  but  also  on  their
ability to generate sufficient operational cash flow to fund their activities. Generally, though, we feel that production activities (in which we are involved)
will fare better than drilling activity. .

For fiscal year 2021, our forecasted capital expenditures will be directly dependent upon our customers’ compression requirements and are not
anticipated  to  exceed  our  internally  generated  cash  flows.   Any  required  capital  will  be  for  additions  to  our  compressor  rental  fleet  and/or  addition  or
replacement  of  service  vehicles.    We  believe  that  cash  on  hand  and  cash  flows  from  operations  will  be  sufficient  to  satisfy  our  capital  and  liquidity
requirements through 2021.  If we require additional capital to fund any significant unanticipated expenditures, including any material acquisitions of other
businesses, joint ventures or other opportunities, this additional capital could exceed our current resources, might not be available to us when we need it, or
might not be on acceptable terms.

Critical Accounting Policies and Practices

We have identified the policies below as critical to our business operations and the understanding of our results of operations.  In the ordinary

course of business, we have made a number of estimates and assumptions relating to the reporting

22

 
 
 
 
of results of operations and financial condition in the preparation of our financial statements in conformity with accounting principles generally accepted in
the United States.  Actual results could differ significantly from those estimates under different assumptions and conditions.  We believe that the following
discussion addresses our most critical accounting policies, which are those that are most important to the portrayal of our financial condition and results of
operations and require our most difficult, subjective, and complex judgments, often as a result of the need to make estimates about the effect of matters that
are  inherently  uncertain.  We  describe  our  significant  accounting  policies  more  fully  in  Note  2  ("Summary  of  Significant  Accounting  Policies")  to  our
consolidated financial statements.

Our critical accounting policies are as follows:

•

•

•

•

•

revenue recognition;

estimating the allowance for doubtful accounts receivable;

accounting for income taxes;

accounting for long-lived assets, intangible assets and goodwill; and

accounting for inventory.

Revenue Recognition Policy

The Company adopted ASC 606, Revenue from Contracts with Customers ("ASC 606") on January, 1, 2018. Revenue is measured based on a
consideration specified in a customer’s contract, excluding any sale incentives and taxes collected on behalf of third parties (i.e. sales and property taxes).
We recognize revenue once a performance obligation has been satisfied and control over a product or service has transferred to the customer. Shipping and
handling costs incurred are accounted for as fulfillment costs and are included in cost of revenues in our Consolidated Statements of Operations.

Nature of Goods and Services

Rental Revenue. The Company generates revenue from renting compressors and flare systems to our customers. These contracts may also include
a fee for servicing the compressor or flare during the rental contract. Our rental contracts typically range from six to 60 months, with our larger horsepower
compressors  having  longer  minimum  contract  terms.  Our  rental  revenue  is  recognized  over  time,  with  equal  monthly  payments  over  the  term  of  the
contract. After the terms of the contract have expired, a customer may renew their contract or continue renting on a monthly basis thereafter.

Sales  Revenue.  The  Company  generates  revenue  by  the  sale  of  custom/fabricated  compressors,  flare  systems  and  parts,  as  well  as,
exchange/rebuilding customer owned compressors and sale of used rental equipment. The Company designs and fabricates compressors and flares based on
the customer’s specifications outlined in their contract. Though the equipment being built is customized by the customer, control under these contracts does
not pass to the customer until the compressor or flare package is completed and shipped, or, in accordance with a bill and hold arrangements, the customer
accepts title and assumes the risk and rewards of ownership. We request some of our customers to make progressive payments as the product is being built;
these payments are recorded as a contract liability on the Deferred Income line on the consolidated balance sheet until control has been transferred. These
contracts also may include an assurance warranty clause to guarantee the product is free from defects in material and workmanship for a set duration of
time; this is a standard industry practice and is not considered a performance obligation.

Allowance for Doubtful Accounts Receivable

We perform ongoing credit evaluations of our customers and adjust credit limits based on management's assessment of the customer's financial
condition and payment history, as well as industry conditions and general economic conditions. We continuously monitor collections and payments from
our customers and maintain a provision for estimated credit losses based upon our historical experience and any specific customer collection issues that we
have identified.  While such credit losses have historically been within our expectations and the provisions established, we cannot guarantee that we will
continue  to  experience  the  same  credit  loss  rates  that  we  have  in  the  past.    Management  believes  that  its  allowance  for  doubtful  accounts  is  adequate;
however, actual write-offs may exceed the recorded allowance.

Accounting for Income Taxes

As part of the process of preparing our financial statements, we are required to estimate our federal income taxes as well as income taxes in each
of  the  states  in  which  we  operate.    This  process  involves  us  estimating  our  actual  current  tax  exposure  together  with  assessing  temporary  differences
resulting from differing treatment of items for tax and accounting

23

purposes.  These differences result in deferred tax assets and liabilities, which are included in our consolidated balance sheet.  We must then assess the
likelihood that our deferred tax assets will be recovered from future taxable income and, to the extent we believe that recovery is not probable, we must
establish a valuation allowance.  To the extent we establish a valuation allowance or increase this allowance in a period, we must include an expense in the
tax provision in the statement of income.

Significant  management  judgment  is  required  in  determining  our  provision  for  income  taxes,  our  deferred  tax  assets  and  liabilities  and  any
valuation allowance recorded against our net deferred tax assets. We currently have no valuation allowance and fully expect to utilize all of our deferred tax
assets.

ASC  740  also  prescribes  a  recognition  threshold  and  measurement  attribute  for  the  financial  statement  recognition  and  measurement  of  a  tax
position taken or expected to be taken in a tax return. In order to record any financial statement benefit, we are required to determine, based on technical
merits of the position, whether it is more likely than not (a likelihood of more than 50 percent) that a tax position will be sustained upon examination,
including resolution of any related appeals or litigation processes. If that step is satisfied, then we must measure the tax position to determine the amount of
benefit to recognize in the financial statements. The tax position is measured at the largest amount of the benefit that is greater than 50 percent likely of
being realized upon ultimate settlement. Our policy regarding income tax interest and penalties is to expense those items as other expense.
Long-Lived Assets, Intangible Assets and Goodwill

Rental Equipment, Property and Equipment (Including Retirement of Rental Equipment)

Rental  equipment  and  property  and  equipment  are  recorded  at  cost  less  accumulated  depreciation,  except  for  work-in-progress  on  new  rental
equipment which is recorded at cost until it’s complete and added to the fleet. Depreciation is computed using the straight-line method over the estimated
useful lives of the assets. Our rental equipment has an estimated useful life between 15 and 25 years, while our property and equipment has an estimate
useful lives which range from 3 to 39 years.  The majority of our property and equipment, including rental equipment, is a direct cost to generating revenue.

We  assess  the  impairment  of  rental  equipment  and  property  and  equipment  whenever  events  or  changes  in  circumstances  indicate  that  the  net
recorded amount may not be recoverable.  The following factors could trigger an impairment review: significant underperformance relative to historical or
projected future cash flows; significant adverse changes in the extent or manner in which asset (or asset group) is being used or its condition, including a
meaningful drop in fleet utilization over the prior four quarters; significant negative industry or company-specific trends or actions, including meaningful
capital expenditure budget reductions by our major customers or other sizable exploration and production or midstream companies, as well as significant
declines  in  oil  and  natural  gas  prices;  legislative  changes  prohibiting  us  from  leasing  our  units  or  flares;  or  poor  general  economic  conditions.  An
impairment loss is recognized if the future undiscounted cash flows associated with the asset (or asset group) and the estimated fair value of the asset are
less than the asset's carrying value.

Goodwill (Including Impairment During 2019)

Goodwill represents the cost in excess of fair value of the identifiable net assets acquired. Goodwill is tested annually for impairment or as needed
upon  the  occurrence  of  certain  events  or  substantive  changes  in  circumstances  that  indicate  goodwill  is  more  likely  than  not  impaired.  During the third
quarter of 2019, the Company examined various qualitative factors to determine if a quantitative goodwill impairment test was needed. As a result of our
qualitative assessment, we proceeded to perform our quantitative goodwill impairment analysis, where we used an independent valuation specialist to assist
us in determining the fair value of our net assets. In this impairment analysis, the estimated fair value of our net assets was determined utilizing market and
income-based  approaches.  Determining  fair  value  in  this  analysis  required  significant  judgment,  including  judgments  about  appropriate  comparable
companies,  appropriate  discount  rates  and  our  estimated  future  cash  flows,  which  are  subject  to  change.  As  a  result  of  our  quantitative  evaluation,  we
recorded a goodwill impairment charge of $10.0 million in 2019.

Intangibles

At December 31, 2020 and 2019, NGS had intangible assets, which relate to developed technology and a trade name which was acquired in our

acquisition of Screw Compression Systems in January 2005.  This asset is not being amortized as it has been deemed to have an indefinite life.

Our policy is to review intangibles that are being amortized for impairment when indicators of impairment are present. In addition, it is our policy

to review indefinite-lived intangible assets for impairment annually or when indicators of

24

impairment are present. We review intangibles through an assessment of the estimated future cash flows related to such assets.  In the event that assets are
found  to  be  carried  at  amounts  in  excess  of  estimated  undiscounted  future  cash  flows,  then  the  assets  will  be  adjusted  for  impairment  to  a  level
commensurate with a discounted cash flow analysis of the underlying assets.  Based upon our analysis, we experienced no impairment of intangible assets
(excluding goodwill) during the years ended December 31, 2020 or 2019.

In addition, in conjunction with our quantitative assessment of goodwill, we used the services of an independent valuation specialist to assist us in
determining the fair value of our trade name during the third quarter of 2019. In this impairment analysis, the estimated fair value of our trade name was
determined utilizing an income-based approach that required significant judgment, including those about an appropriate royalty rate and discount rate. This
analysis indicated no impairment of our trade name.

Inventories

We value our total inventory (current and long-term) at the lower of the actual cost and net realizable value of the inventory.  We regularly review
inventory quantities on hand and record a provision for excess and obsolete inventory based primarily on current and anticipated customer demand and
production  requirements.  The  Company  accesses  anticipated  customer  demand  based  on  current  and  upcoming  capital  expenditure  budgets  of  its  major
customers  as  well  as  other  significant  companies  in  the  industry,  along  with  oil  and  natural  gas  price  forecasts  and  other  factors  affecting  the  industry.
Given its concerns about the industry backdrop, Company management determined during 2019 that an increase of its inventory allowance was necessary.
Due  to  the  slow  moving  nature  or  obsolescence  of  a  portion  of  the  Company's  long-term  inventory  and  inventory  related  to  the  retirement  of  rental
equipment, management recorded a charge of $3.8 million to write-off obsolete inventory from the balance sheet. For the year ended December 31, 2020,
inventory allowance and write-off totaled $0.3 million. We ended 2020 with an inventory allowance balance of $221,000.

Our Performance Trends and Outlook

On  January  30,  2020,  the  World  Health  Organization  (“WHO”)  announced  a  global  health  emergency  because  of  a  new  strain  of  coronavirus
known  as  COVID-19  due  to  the  risks  it  imposes  on  the  international  community  as  the  virus  spreads  globally.  In  March  2020,  the  WHO  classified  the
COVID-19 outbreak as a pandemic, based on the rapid increase in exposure globally. During this time, the market began to experience a decline in oil
prices in response to oil demand concerns due to the global economic impacts of COVID-19. These developments have led to significant weakness in oil
prices and ensuing reductions of exploration and production company capital and operating budgets.

With the significant decline in oil prices as well as the general economic decline caused by the impacts of COVID-19, we expect utilization to
continue to decline among our smaller horsepower and medium horsepower units during the remainder of 2021 after a minimal decline during 2020. In
terms of sales, we expect minimal compressor sales for the year due to much lower capital expenditure budgets throughout the industry, including those of
our major customers. Finally, we have recently experienced and expect to continue to experience pricing pressure from our customers and competitors until
industry and economic conditions improve. We are currently experiencing no issues with potential workforce and supply chain disruptions. In addition, our
relationship with our major customer continues to be strong, and they have continued to pay our invoices in a timely, consistent manner. Nevertheless, if
any of these circumstances change, our business could be adversely affected.

While management anticipates that the industry and economic impact of the pandemic will have a negative effect on its results of operations in

2021 and perhaps beyond, the degree to which these factors will impact our business remains uncertain. Please read Item 1A, Risk Factors, in this report.

25

 
Results of Operations

Year Ended December 31, 2020 Compared to the Year Ended December 31, 2019

The table below shows our revenues and percentage of total revenues for each of our product lines for the years ended December 31, 2020 and

2019.  

Rental
Sales
Service & Maintenance
Total

Revenue
Year Ended December 31,

2020

2019

$

$

60,826 
5,657 
1,572 
68,055 

(dollars in thousands)

89.4 % $
8.3 %
2.3 %

$

56,701 
19,763 
1,980 
78,444 

72.3 %
25.2 %
2.5 %

Total revenue decreased to $68.1 million from $78.4 million, or 13.2%, for the year ended December 31, 2020 compared to 2019. This decrease
was mainly a result of lower sales revenue (71.4% decrease) primarily due to decreased compressor sales partially offset by increased rental revenue (7.3%
increase) primarily due to a greater number of large horsepower units being rented.

Rental revenue increased to $60.8 million from $56.7 million for the year ended December 31, 2020 compared to 2019. As of December 31, 2020,
we  had  2,224  natural  gas  compressors  in  our  rental  fleet,  down  from  2,304  units  at  year  end  2019.  Despite  this  decrease,  the  Company's  total  unit
horsepower increased by 2.1% to 438,524 at December 31, 2020 compared to 429,650 horsepower year end 2019, which reflects the addition of 24 high
horsepower compressors with 20,600 horsepower to the Company's fleet during 2020.  As of December 31, 2020, we had 1,274 natural gas compressors
totaling 287,646 horsepower rented to 80 customers, compared to 1,419 natural gas compressors totaling 299,836 horsepower rented to 95 customers as of
December 31, 2019. The rental fleet had a unit utilization as of December 31, 2020 and 2019, respectively, of 57.3% and 61.6% while our horsepower
utilization for the same periods, respectively, was 65.6% and 69.8%. The decline in both utilization metrics was mainly the result of the decline in demand
for our lower horsepower units.

Sales revenue decreased to $5.7 million from $19.8 million for the year ended December 31, 2020, compared to 2019. This decrease in largely
attributable to a decrease in compressor sales primarily driven by reductions in capital spending from our customers due to a weakened oil and natural gas
price environment during 2020. Sales are subject to fluctuations in timing of industry activity related to capital projects and, as such, can vary substantially
between periods.

Company management routinely reviews its inventory balances for obsolescence. Due to the slow moving nature or obsolescence of a portion of
the  Company's  long-term  inventory  and  inventory  related  to  the  retirement  of  rental  equipment,  management  recorded  an  increase  of  $251,000  in  the
inventory allowance reserve for costs that may not be recoverable in the future. We ended 2020 with an inventory allowance balance of $221,000.

Company management routinely reviews its rental fleet to determine which units are no longer of the type, configuration, make or model that our
customers are demanding or that are not cost efficient to refurbish, maintain and/or operate. As a result of this review, we determined 216 units should be
retired from our rental fleet. Accordingly, we recorded a $291,000 loss on retirement of rental equipment during the year ended December 31, 2020.

Operating loss decreased to $3.6 million for the year ended December 31, 2020 compared to an operating loss of $15.2 million for the year ended
December  31,  2019.  The  decrease  in  operating  loss  was  mainly  due  to  a  $10.0  million  goodwill  impairment  charge  in  2019  as  well  as  lower  losses  on
inventory allowance and write-off and reduced charges related to retirement of rental units. These decreases were partially offset by lower sales revenues.

Selling, general, and administrative expenses decreased to $10.6 million for the year ended December 31, 2020, as compared to $10.7 million for
2019. This 1.5% decrease was primarily the result of decreases in deferred compensation expense (approximately $187,000) and expenses related to stock
options (approximately $100,000) partially offset by increased insurance costs ($86,0000).

26

 
 
 
 
Depreciation and amortization expense increased to $25.2 million from $23.3 million, or 8.3%, for the year ended December 31, 2020, compared
to 2019.  The increase is the result of higher capital expenditures for larger horsepower units being added to the fleet. We added 42 units (approximately
23,265  horsepower)  to  our  fleet  during  the  twelve  month  period  ended  December  31,  2020.  Twenty-four  of  those  units  were  400  horsepower  or  larger
(including 10 at 1,380 horsepower), representing approximately 89% of the horsepower added.

Income tax benefit increased to $4.8 million from $0.7 million for the year ended December 31, 2020 compared to 2019. Our effective tax rate for
both  years  differs  from  the  U.S.  federal  statutory  rate  of  21%.  On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act ("CARES
Act")  was  enacted  in  response  to  the  economic  impact  caused  the  COVID-19  pandemic.  The  CARES  Act  allows  federal  net  operating  losses  ("NOL")
incurred in 2018, 2019, and 2020 to be carried back to each of the five preceding taxable years to generate a refund of previously paid federal income taxes.
The  Company  generated  significant  NOLs  during  2018  and  2019.  The  Company  filed  its  NOL  carryback  claims  for  2018  and  2019  during  2020.
Accordingly, the Company recorded a federal income tax receivable of $15.0 million and an increase to its deferred income tax liability of $10.1 million on
its condensed consolidated balance sheet. During the third quarter of 2020, the Company received refunds totaling $3.9 million related to its 2018 NOLs,
which,  along  with  year  end  provision  adjustments,  reduced  its  federal  income  tax  receivable  to  $11.9  million  on  its  consolidated  balance  sheet  as  of
December 31, 2020. In addition, the Company recorded a current income tax benefit of $4.8 million on its consolidated statement of operations for the year
ended  December  31,  2020.  Our  income  tax  benefit  in  2019  was  largely  due  to  our  net  loss  of  $13.7  million  but  was  largely  offset  by  a  difference  in
goodwill impairment for tax purposes as well as an adjustment to our state tax rates that increased our deferred income tax expense by approximately $0.8
million.

Adjusted Gross Margin Year Ended December 31, 2020 Compared to the Year Ended December 31, 2019

The table below shows our adjusted gross margin and related percentages for each of our product lines for the years ended December 31, 2020 and

December 31, 2019.  Adjusted gross margin is the difference between revenue and cost of revenues, exclusive of depreciation and amortization expense.

Rental
Sales
Service & Maintenance
Total

Adjusted Gross Margin 
Year Ended December 31,

(1)

2020

2019

$

$

32,320 
(554)
858 
32,624 

(dollars in thousands)

53.1 % $
(9.8)%
54.6 %
47.9 % $

29,118 
3,666 
1,350 
34,134 

51.4 %
18.5 %
68.2 %

43.5 %

(1) For a reconciliation of adjusted gross margin to its most directly comparable financial measure calculated and presented in accordance with GAAP,
please read "Non-GAAP Financial Measures" below.

Our overall adjusted gross margin percentage increased to 47.9% for the year ended December 31, 2020 compared to 43.5% for the year ended
December 31, 2019, exclusive of depreciation and amortization. Our increase in gross margins is mainly due to an increase in total revenue related to our
rental revenue. Rental revenues comprised 89% of our total revenues for the year ended December 31, 2020 compared to 72% of total revenues for the year
ended December 31, 2019. As our rental activity inherently realizes higher adjusted gross margins, the increase in revenue concentrations will increase our
overall adjusted gross margins. Sales margin decreased to (9.8)% in 2020 from 18.5% in 2019 due to significant declines in sales revenues (71.4%). While
many sales costs are variable, certain costs such as labor are less variable as a certain staff level is retained to meet demand when market forces shift. Third
party service and maintenance margins decreased to 54.6% from 68.2% for the year ended December 31, 2020 compared to 2019. Service and maintenance
only represents 2.3% of our revenue in 2019, providing minimal impact on our overall adjusted gross margin.

Non-GAAP Financial Measures

Our definition and use of Adjusted EBITDA

“Adjusted  EBITDA”  is  a  non-GAAP  financial  measure  that  we  define  as  earnings  (net  (loss)  income)  before  interest,  taxes,  depreciation  and
amortization, as well as impairment of goodwill, an increase in inventory allowance and inventory write-offs, and retirement of rental equipment.  This
term, as used and defined by us, may not be comparable to similarly titled

27

 
 
 
measures  employed  by  other  companies  and  is  not  a  measure  of  performance  calculated  in  accordance  with  GAAP. Adjusted  EBITDA  should  not  be
considered in isolation or as a substitute for operating income, net income or loss, cash flows provided by operating, investing and financing activities, or
other income or cash flow statement data prepared in accordance with GAAP.  However, management believes Adjusted EBITDA is useful to an investor
in evaluating our operating performance because:

•

•

•

it is widely used by investors in the energy industry to measure a company’s operating performance without regard to items excluded from the
calculation of Adjusted EBITDA, which can vary substantially from company to company depending upon accounting methods and book value of
assets, capital structure and the method by which assets were acquired, among other factors;

it helps investors to more meaningfully evaluate and compare the results of our operations from period to period by removing the impact of our
capital structure and asset base from our operating structure; and

it is used by our management for various purposes, including as a measure of operating performance, in presentations to our Board of Directors, as
a basis for strategic planning and forecasting, and as a component for setting incentive compensation.

Adjusted EBITDA has limitations as an analytical tool, and you should not consider it in isolation, or as a substitute for analysis of our results as

reported under generally accepted accounting principles.  Some of these limitations are:

• Adjusted EBITDA does not reflect our cash expenditures, future requirements for capital expenditures, or contractual commitments;

• Adjusted EBITDA does not reflect changes in, or cash requirements for, our working capital needs;

• Adjusted EBITDA does not reflect the cash requirements necessary to service interest or principal payments on our debts; and

•

although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the
future, and Adjusted EBITDA does not reflect any capital expenditures for such replacements.

There  are  other  material  limitations  to  using  Adjusted  EBITDA  as  a  measure  of  performance,  including  the  inability  to  analyze  the  impact  of
certain recurring items that materially affect our net income or loss, and the lack of comparability of results of operations of different companies.  Please
read the table below under “Reconciliation” to see how Adjusted EBITDA reconciles to our net income, the most directly comparable GAAP financial
measure.

Reconciliation

The following table reconciles our net (loss) income, the most directly comparable GAAP financial measure, to Adjusted EBITDA:

Net income (loss)

Interest expense
Income tax (benefit) expense
Depreciation and amortization
Impairment of goodwill
Inventory allowance
Retirement of rental equipment

Adjusted EBITDA

28

Year Ended December 31,

2020

2019

(in thousands)
1,808  $
14 
(4,792)
25,198 
— 
184 
291 
22,703  $

(13,864)
15 
(693)
23,268 
10,039 
3,758 
1,512 
24,035 

$

$

 
 
 
Our definition and use of Adjusted Gross Margin

We define “Adjusted Gross Margin” as total revenue less costs of revenues (excluding depreciation and amortization expense). Adjusted gross
margin is included as a supplemental disclosure because it is a primary measure used by our management as it represents the results of revenue and costs
(excluding depreciation and amortization expense), which are key components of our operations. Adjusted gross margin differs from gross margin, in that
gross margin includes depreciation expense. We believe adjusted gross margin is important because it focuses on the current operating performance of our
operations  and  excludes  the  impact  of  the  prior  historical  costs  of  the  assets  acquired  or  constructed  that  are  utilized  in  those  operations.  Depreciation
expense does not accurately reflect the costs required to maintain and replenish the operational usage of our assets and therefore may not portray the costs
from  current  operating  activity.  Rather,  depreciation  expense  reflects  the  systematic  allocation  of  historical  property  and  equipment  values  over  the
estimated useful lives.

Adjusted gross margin has certain material limitations associated with its use as compared to gross margin. These limitations are primarily due to
the exclusion of depreciation expense, which is material to our results of operations. Because we use capital assets, depreciation expense is a necessary
element  of  our  costs  and  our  ability  to  generate  revenue.  In  order  to  compensate  for  these  limitations,  management  uses  this  non-GAAP  measure  as  a
supplemental measure to other GAAP results to provide a more complete understanding of our performance.

As an indicator of our operating performance, adjusted gross margin should not be considered an alternative to, or more meaningful than, gross
margin  as  determined  in  accordance  with  GAAP.  Our  adjusted  gross  margin  may  not  be  comparable  to  a  similarly  titled  measure  of  another  company
because other entities may not calculate adjusted gross margin in the same manner.

Reconciliation

The following table calculates gross margin, the most directly comparable GAAP financial measure, and reconciles it to adjusted gross margin:

Total revenue
Costs of revenue, exclusive of depreciation and amortization
Depreciation allocable to costs of revenue
Gross margin
Depreciation allocable to costs of revenue

Adjusted gross margin

29

Year Ended December
31,

2020

2019

(in thousands)

$

$

68,055  $
(35,431)
(24,578)
8,046 
24,578 
32,624  $

78,444 
(44,310)
(22,908)
11,226 
22,908 
34,134 

 
 
 
Liquidity and Capital Resources

Our working capital positions as of December 31, 2020 and 2019 are set forth below.

Current Assets:

Cash and cash equivalents
Trade accounts receivable, net
Inventory, net
Federal income tax receivable
Prepaid income taxes
Prepaid expenses and other
Total current assets

Current Liabilities:

Accounts payable
Accrued liabilities
Line of credit
Current operating leases
Deferred income
Total current liabilities

Net working capital

As of December 31,

2020

2019

(in thousands)

$

$

$

28,925  $
11,884 
19,926 
11,538 
66 
379 
72,718 

2,373  $
6,770 
417 
198 
1,103 
10,861 
61,857  $

11,592 
9,106 
21,080 
— 
40 
597 
42,415 

1,975 
2,287 
417 
189 
640 
5,508 
36,907 

For the year ended December 31, 2020, we invested approximately $15.3 million in rental equipment, property and other equipment. During the
year, the Company added $13.0 million in new equipment to our rental fleet and $2.2 million in other property and equipment. Our investment in property
and equipment includes any changes to work-in-progress related to our rental fleet jobs at the beginning of the year compared to the end of the year. Our
rental work-in-progress decreased by $4.0 million during 2020. We financed our investment in rental equipment, property and other equipment with cash
flows from operations during 2020.  

Cash flows

At December 31, 2020, we had cash and cash equivalents of $28.9 million compared to $11.6 million at year end 2019. Our cash flow from
operations  of  $32.6  million  was  partially  offset  by  capital  expenditures  of  $15.3  million  during  2020.  We  also  had  working  capital  of  $61.9  million  at
December 31, 2020 compared to $36.9 million at December 31, 2019. On December 31, 2020 and 2019, we had outstanding debt of $417,000, which is all
related to our line of credit. We had net cash flow from operating activities of $32.6 million during 2020 compared $29.4 million during 2019. Our cash
flow from operating activities of $32.6 million was primarily the result of our rental and sales revenues partially offset by associated costs of sales as well
as a federal income tax refund of approximately $4.1 million.

At December 31, 2019, we had cash and cash equivalents of $11.6 million, working capital of $36.9 million and total debt of $417,000, under
our credit agreement which was due on March 31, 2020. Our cash and cash equivalents decreased from 2018, due to an increase on our capital program for
contracted  new  large  horsepower  compressor  builds  and  the  construction  of  our  new  corporate  office.  We  had  positive  net  cash  flow  from  operating
activities  of  approximately  $29.4  million  during  2019.  This  was  primarily  from  a  net  loss  of  $0.5  million  and  non-cash  items  of  depreciation  and
amortization of $23.3 million, $2.6 million related to stock-based compensation, a decrease in deferred income taxes of $0.3 million and a decrease in cash
flows related to working capital and other items of $0.2 million.

Senior Bank Borrowings

We had a senior secured revolving credit agreement the ("Amended Credit Agreement") with JP Morgan Chase Bank, N.A (the "Lender") that
expired on March 31, 20201. We have decided not to renew the Amended Credit Agreement and on March 17, 2021, we repaid the outstanding principal
balance. No further amounts or obligations are owed on the Amended Credit Agreement. We are in the process of negotiating a new credit facility which
we expect to complete by the end of April 2021, although no guarantee can be made that we will be successful in finalizing and securing a new credit
facility.

30

 
 
 
 
 
 
Components of Our Principal Capital Expenditures

Capital expenditures for the two years ended December 31:

Rental equipment and property and equipment

Expenditure Category

2020

2019

(in thousands)

$

15,257  $

69,938 

The level of our expenditures will vary in future periods depending on energy market conditions and other related economic factors.  Based upon
existing economic and market conditions, we believe that our cash on hand, operating cash flow and available line of credit are adequate to fully fund our
net capital expenditures requirements for 2021.  We also believe we have flexibility with respect to our financing alternatives and adjustments to our capital
expenditure plans if circumstances warrant. We do not have any material continuing commitments related to our current operations that cannot be met with
our cash on hand and our line of credit. However, our financing capacity could be negatively impacted by the COVID-19 pandemic. Please see Item 1A,
Risk Factors, of this report.

Off-Balance Sheet Arrangements

From  time-to-time,  we  enter  into  off-balance  sheet  arrangements  and  transactions  that  can  give  rise  to  off-balance  sheet  obligations.  As  of

December 31, 2020, we did not have any material off-balance sheet arrangements.

Recently Issued Accounting Pronouncements

In December 2019, the FASB issued ASU 2019-12, Income Taxes (ASC Topic 740), which simplifies accounting for income taxes by removing
certain  exceptions  to  various  tax  accounting  principles  and  clarifies  other  existing  guidance  in  order  to  improve  consistency  of  application.  These
amendments are effective for public entities for interim and annual periods beginning after December 15, 2020. We are currently evaluating the impact of
ASU 2019-12 on our consolidated financial statements and note disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial
Instruments.  The  amendments  to  ASC  Topic  326  require  immediate  recognition  of  estimated  credit  losses  expected  to  occur  over  the  remaining  life  of
many financial assets, including trade receivables. For companies that qualify as smaller reporting companies, the amendments in this update are effective
for  interim  and  annual  periods  beginning  after  January  1,  2023.  We  are  currently  evaluating  the  impact  of  ASU  2016-13  on  our  consolidated  financial
statements and note disclosures.

Environmental Regulations

Various federal, state and local laws and regulations covering the discharge of materials into the environment, or otherwise relating to protection of
human  safety  and  health  and  the  environment,  affect  our  operations  and  costs.    Compliance  with  these  laws  and  regulations  could  cause  us  to  incur
remediation  or  other  corrective  action  costs  or  result  in  the  assessment  of  administrative,  civil  and  criminal  penalties  and  the  issuance  of  injunctions
delaying or prohibiting operations.  In addition, we have acquired certain properties and plant facilities from third parties whose actions with respect to the
management and disposal or release of hydrocarbons or other wastes were not under our control.  Under environmental laws and regulations, we could be
required  to  remove  or  remediate  wastes  disposed  of  or  released  by  prior  owners.    In  addition,  we  could  be  responsible  under  environmental  laws  and
regulations for properties and plant facilities we lease, but do not own.  Compliance with such laws and regulations increases our overall cost of business,
but has not had a material adverse effect on our operations or financial condition.  It is not anticipated, based on current laws and regulations, that we will
be required in the near future to expend amounts that are material in relation to our total expenditure budget in order to comply with environmental laws
and regulations but such laws and regulations are frequently changed and we are unable to predict the ultimate cost of compliance.  We also could incur
costs  related  to  the  cleanup  of  sites  to  which  we  send  equipment  and  for  damages  to  natural  resources  or  other  claims  related  to  releases  of  regulated
substances at such sites.

ITEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

Our consolidated financial statements and supplementary financial data are included in this Annual Report on Form 10-K beginning on page F-

1.

31

 
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

An evaluation was carried out under the supervision and with the participation of our management, including our President and Chief Executive
Officer and our Vice President and Chief Financial Officer, of the effectiveness of the design of our “disclosure controls and procedures” (as such term is
defined  in  Rules  13a-15(e)  and  15d-15(e)  under  the  Securities  Exchange  Act  of  1934,  as  amended  or,  the  “Exchange  Act”)  as  of  December  31,  2020,
pursuant to Exchange Act Rule 13a-15. Based upon that evaluation, the President and Chief Executive Officer and our Vice President and Chief Financial
Officer concluded that our disclosure controls and procedures as of December 31, 2020, are effective to ensure that information required to be disclosed by
us in the reports filed or submitted by us under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the
SEC's  rules  and  forms  and  include  controls  and  procedures  designed  to  ensure  that  information  required  to  be  disclosed  by  us  in  such  reports  is
accumulated  and  communicated  to  our  management,  including  our  principal  executive  and  financial  officers  as  appropriate  to  allow  timely  decisions
regarding required disclosures. Due to the inherent limitations of control systems, not all misstatements may be detected. Those inherent limitations include
the realities that judgments in decision-making can be faulty and that breakdowns can occur because of simple errors or mistakes. Additionally, controls
could  be  circumvented  by  the  individual  acts  of  some  persons  or  by  collusion  of  two  or  more  people.  Our  controls  and  procedures  can  only  provide
reasonable, not absolute, assurance that the above objectives have been met.

Management’s Report on Internal Control Over Financial Reporting

Our management, including the President and Chief Executive Officer and our Principal Accounting Officer, is responsible for establishing and
maintaining adequate internal control over financial reporting, as defined in Rule 13a-15(f) and 15d-15(f) under the Exchange Act.  Our internal control
system is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external
purposes in accordance with generally accepted accounting principles.  Our internal control over financial reporting includes those policies and procedures
that:

•

•

•

pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets;

provide  reasonable  assurance  that  transactions  are  recorded  as  necessary  to  permit  preparation  of  financial  statements  in  accordance  with
accounting principles generally accepted in the United States of America, and that our receipt and expenditures are being made only in accordance
with authorizations of management and our Board of Directors; and

provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have
a material effect on the financial statements.

All internal control systems, no matter how well designed, have inherent limitations.  A system of internal control may become inadequate over
time  because  of  changes  in  conditions  or  deterioration  in  the  degree  of  compliance  with  the  policies  or  procedures.    Therefore,  even  those  systems
determined to be effective can provide only reasonable assurance with respect to financial statement preparation and presentation.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable

possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

Management, including our President and Chief Executive Officer and our Vice President and Chief Financial Officer, assessed the effectiveness
of the Company’s internal control over financial reporting as of December 31, 2020. In making this assessment, management used the criteria set forth by
the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (COSO)  in  Internal  Control—Integrated  Framework  (2013).  Based  on  this
assessment,  management  has  concluded  that  our  internal  control  over  financial  reporting  was  effective  as  of  December  31,  2020.  For  the  year  ended
December  31,  2019,  management  determined  that  our  internal  control  over  financial  reporting  was  not  effective  due  to  the  material  weaknesses  noted
below.

32

 
Material Weaknesses in Internal Control over Financial Reporting

During  the  fourth  quarter  of  fiscal  year  2018,  we  identified  a  material  weakness  in  internal  controls  over  financial  reporting  related  to  our
accounting and reporting of income tax (expense) benefit and consolidated balance sheet and the consolidated operations statement accounts. We did not
design  and  maintain  an  effective  control  environment  with  formal  accounting  policies  and  controls  to  adequately  provide  sufficient  information  for  the
preparation of our tax provision to our third party tax professionals and did not provide an appropriate level or sufficient review of the tax provision. The
material weakness created a reasonable possibility that there could be a material misstatement of our annual or interim financial statements.

This material weakness resulted in an immaterial misstatement in the provision for income taxes in our consolidated financial statement as of and
for  the  years  ended  December  31,  2017,  2016  and  2015.  Consolidated  financial  statements  included  in  our  Annual  Report  on  Form  10-K  issued  as  of
December 31, 2018 reflect the correction of this misstatement of income tax (expense) benefit, the related consolidated balance sheet and the consolidated
operations statement accounts.

We  have  undergone  evaluations,  enhancements  and  implementation  in  our  internal  controls  over  financial  reporting  to  address  the  identified
material weakness. We have implemented various changes and enhancements to improve our controls related to the material weakness. After testing, our
revised controls were not considered remediated at year end 2019, so further changes were implemented. Changes made include timely submittal of tax
input data to our preparer, tie-out of key inputs and review meetings with financial management and our preparer to confirm assumptions and results. We
have re-assessed our internal controls at the end of 2020 and have concluded that the changes made sufficiently remediate the material weakness.

During the fourth quarter of fiscal year 2019, we identified another material weakness in internal controls over financial reporting related to our
accounting and reporting of compressor "make-ready" jobs, as well as various other compressor maintenance jobs, that were inappropriately capitalized,
resulting in immaterial increases to the Company’s cost of rentals and, to a much lesser extent, depreciation expense in prior periods. These increases in
operating costs and expenses were immaterial to all prior annual and interim periods, but would have been material to the fourth quarter of 2019 if these
cumulative operating costs and expenses were taken as an out-of-period adjustment.

We did not design and maintain an effective control environment with formal accounting policies and controls to adequately provide sufficient
information to report these expenses in a timely manner. The material weakness created a reasonable possibility that there could be a material misstatement
of our annual or interim financial statements.

Management  reviewed  its  procedures  around  the  activity  that  led  to  this  material  weakness  during  2019.  We  have  completed  our  review  and
changed the treatment of make-ready jobs to expense the cost at the time the job occurs and have made changes to our capitalization policy and review
procedures. We believe these changes have been in place for a sufficient period to conclude that the material weakness has been remediated by the end of
2020.

Changes in Internal Control Over Financial Reporting

Except  for  the  remediation  of  control  deficiencies  discussed  above,  there  were  no  changes  in  our  internal  control  over  financial  reporting  that
occurred  during  the  year  ended  December  31,  2020,  that  has  materially  affected,  or  is  reasonably  likely  to  materially  affect,  our  internal  control  over
financial  reporting.  We  will  continue  to  review  and  document  our  disclosure  controls  and  procedures,  including  our  internal  control  over  financial
reporting, and may from time to time make changes aimed at enhancing their effectiveness and to ensure that our systems evolve with our business.

ITEM 9B.    OTHER INFORMATION

None.

33

ITEM 10.    DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

PART III

The  information  required  by  this  item  is  incorporated  herein  by  reference  to  the  sections  “Election  of  Directors,”    “Executive  Officers,”
“Corporate Governance” and “The Board of Directors and its Committees” in our definitive proxy statement which will be filed with the Securities and
Exchange Commission within 120 days after December 31, 2020 or as such period may be extended by action of the Securities and Exchange Commission.

We have adopted a Code of Business Conduct and Ethics that applies to our directors, officers and employees. The Code of Business Conduct
and Ethics is posted in the "Investor Relations" section of our website at www.ngsgi.com. The Code of Business Conduct and Ethics maybe obtained free
of charge by writing before to Natural Gas Services Group, Inc., Attn: Investor Relations, 404 Veterans Airpark Lane, Ste 300 Midland, TX 79705.

ITEM 11.    EXECUTIVE COMPENSATION

The  information  required  by  this  item  is  incorporated  herein  by  reference  to  the  section  “Executive  Compensation”  in  our  definitive  proxy
statement which will be filed with the Securities and Exchange Commission within 120 days after December 31, 2020 or as such period may be extended
by action of the Securities and Exchange Commission.

ITEM 12.     SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER

MATTERS

The  information  required  by  this  item  is  incorporated  herein  by  reference  to  the  section  “Principal  Shareholders  and  Security  Ownership  of
Management” in our definitive proxy statement which will be filed with the Securities and Exchange Commission within 120 days after December 31,
2020 or as such period may be extended by action of the Securities and Exchange Commission.

ITEM 13.     CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The  information  required  by  this  item  is  incorporated  herein  by  reference  to  the  sections  “Related  Person  Transactions”  and  “Corporate
Governance” in our definitive proxy statement which will be filed with the Securities and Exchange Commission within 120 days after December 31, 2020
or as such period may be extended by action of the Securities and Exchange Commission.

ITEM 14.     PRINCIPAL ACCOUNTING FEES AND SERVICES

The  information  required  by  this  item  is  incorporated  herein  by  reference  to  the  section  “Principal  Accounting  Fees  and  Services”  in  our
definitive proxy statement which will be filed with the Securities and Exchange Commission within 120 days after December 31, 2020 or as such period
may be extended by action of the Securities and Exchange Commission.

34

PART IV

ITEM 15.    EXHIBITS AND CONSOLIDATED FINANCIAL STATEMENTS

The following documents are filed as part of this Annual Report on Form 10-K:

(a)(1) and (a)(2) Consolidated Financial Statements

For a list of Consolidated Financial Statements, see “Index to Consolidated Financial Statements” incorporated herein by reference.

(a)(3) Exhibits

A list of exhibits to this Annual Report on Form 10-K is set forth below:

Exhibit    No.                                                                           Description
3.1

3.2

10.1

10.2

10.3

10.4

10.5

10.6

10.7

10.8

10.9

Articles of Incorporation, as amended (Incorporated by reference to Exhibit 3.1 of the 10-QSB filed and dated November 10, 2004).
Bylaws, as amended (Incorporated by reference to Exhibit 3.11 of the Registrant's Current Report on Form 8-K filed with the Securities and
Exchange Commission on June 21, 2016.)
2009 Restricted Stock/Unit Plan, as amended (Incorporated by reference to Exhibit 99.1 of the Registrant’s Current Report on Form 8-K
dated June 3, 2014 and filed with the Securities and Exchange Commission on June 6, 2014.)
Stock Option Plan, as amended and restated (Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed
with the Securities and Exchange Commission on June 21, 2016.)
Credit Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 10, 2010 (Incorporated by
reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on November
24, 2014.)
Fifth Amendment of Credit Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated August 31, 2017
(Incorporated by reference to Exhibit 10.2 of the Registrant's Current report on Form 8-K filed with the Securities and Exchange Commission
on September 7, 2017.)
Security Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated December 10, 2010 (Incorporated by
reference to Exhibit 10.2 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on December
16, 2011.)
Fourth Security Agreement between Natural Gas Services Group, Inc. and JPMorgan Chase Bank, N.A., dated August 31, 2017
(Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange
Commission on September 7, 2017.)
Promissory Note in the aggregate amount of $30,000,000 issued to JPMorgan Chase Bank, N.A., dated August 31, 2017, in connection with
the revolving credit line under the Credit Agreement with JPMorgan Chase Bank, N.A. (Incorporated by reference to Exhibit 10.3 of the
Registrant’s Current Report on Form 8-K filed with the Securities and Exchange Commission on September 7, 2017.)
Amended and restated Employment Agreement dated April 27, 2015 between Natural Gas Services Group, Inc. and Stephen C. Taylor
(Incorporated by reference to Exhibit 10.1 of the Registrant’s Current Report on Form 8-K filed with the Securities and Exchange
Commission on April 29, 2015.)
The Executive Nonqualified Excess Plan Adoption Agreement, referred to as the Nonqualified Deferred Compensation Plan (Incorporated by
reference to Exhibit 10.11 of the Registrant's Quarterly report on Form 10-Q filed with the Securities and Exchange Commission on May 6,
2016.)

35

 
10.10

*21.1
*23.1
*23.2
*31.1
*31.2
*32.1
*32.2
101.INS
101.SCH
101.CAL
101.DEF
101.LAB
101.PRE

Annual Incentive Bonus Plan (Incorporated by reference to Exhibit 10.1 of the Registrant's Current Report on Form 8-K filed with the
Securities and Exchange Commission on December 18, 2012.)
Subsidiaries of the registrant
Consent of BDO USA, LLP
Consent of Moss Adams, LLP
Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
Certification of Principal Accounting Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
Certification of Principal Accounting Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
XBRL Instance Document
XBRL Taxonomy Extension Schema Document
XBRL Taxonomy Extension Calculation Linkbase Document
XBRL Taxonomy Extension Definition Linkbase Document
XBRL Taxonomy Extension Label Linkbase Document
XBRL Taxonomy Extension Presentation Linkbase Document

 * Filed herewith.

ITEM 16.     FORM 10-K SUMMARY

None.

36

Pursuant  to  the  requirements  of  Section  13  or  15(d)  of  the  Securities  Exchange  Act  of  1934,  the  registrant  has  duly  caused  this  report  to  be

signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

March 31, 2021

NATURAL GAS SERVICES GROUP, INC.

By:

/s/ Stephen C. Taylor
Stephen C. Taylor
Chairman of the Board, President and Chief Executive Officer
(Principal Executive Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of

the registrant and in the capacities and on the dates indicated:

Signature

/s/ Stephen C. Taylor

     Stephen C. Taylor

/s/ G. Larry Lawrence

     G. Larry Lawrence

/s/ Leslie A. Beyer

     Leslie A. Beyer

/s/ William F. Hughes, Jr.

     William F. Hughes, Jr.

/s/ David L. Bradshaw

     David L. Bradshaw

/s/ John W. Chisholm

     John W. Chisholm

Title

Date

Chairman of the Board of Directors, Chief Executive Officer and
President (Principal Executive Officer)

March 31, 2021

Vice President and Chief Financial Officer (Principal Accounting
Officer)

March 31, 2021

Director

Director

Director

Director

37

March 31, 2021

March 31, 2021

March 31, 2021

March 31, 2021

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets as of December 31, 2020 and 2019

Consolidated Statements of Operations for the Years Ended December 31, 2020 and 2019

Consolidated Statements of Stockholders' Equity for the Years Ended December 31, 2020 and 2019

Consolidated Statements of Cash Flows for the Years Ended December 31, 2020 and 2019

Notes to Consolidated Financial Statements

Page

F-1

F-4

F-5

F-6

F-7

F-8

 
 
 
 
 
 
 
 
 
 
 
 
 
Report of Independent Registered Public Accounting Firm

To the Shareholders and the Board of Directors of
Natural Gas Services Group, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheet of Natural Gas Services Group, Inc. and subsidiary (the “Company”) as of December 31,
2020,  the  related  consolidated  statements  of  operations,  stockholders’  equity,  and  cash  flows  for  each  of  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, 2020, and the consolidated results of its operations and its cash flows for
the year 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 audit. 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 audit 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 audit 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  audit  included  performing  procedures  to  assess  the  risks  of  material  misstatement  of  the  consolidated  financial  statements,  whether  due  to  error  or
fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and
disclosures in the consolidated financial statements. Our audit 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 audit provides 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.

Estimation of Undiscounted Cash Flows in Assessment of Long-Lived Asset Impairment

As  described  in  Notes  1  and  4,  the  Company  assesses  long-lived  assets,  including  rental  equipment,  for  impairment  whenever  events  or  changes  in
circumstances indicate the carrying value may not be recoverable. The Company's evaluation of possible triggering events uses both internal and external
data, including the following key indicators and internally developed assumptions: i) significant underperformance relative to historical or projected cash
flows; ii) significant adverse changes in the extent or manner an asset group is being used or its condition, including meaningful drop in fleet utilization
over the prior period quarters, and iii) significant negative industry or company specific trends or actions.

We  identified  the  estimation  of  undiscounted  cash  flows  in  the  assessment  of  long-lived  asset  impairment  as  a  critical  audit  matter.  The  estimation  of
undiscounted  cash  flows  uses  inputs  that  require  significant  management  judgment,  including  estimating  future  anticipated  revenues  and  expenses.
Assessing these assumptions require a high degree of subjective auditor

F - 1

judgment to perform procedures due to the nature and extent of audit evidence and effort required to appropriately address these matters.

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

• Obtaining an understanding of the design of the Company's process and controls over the identification of possible long-lived asset impairment

triggering events, including the process to develop the indicators and assumptions listed above.

•

•

•

Evaluating management's identification of events or changes in circumstances that indicate the carrying amounts may not be recoverable.

Evaluating management's estimate of useful lives of rental equipment, and anticipated rental rates of units, net returns or sets, and estimated gross
margins utilized in the estimate of discounted cash flows by comparison to historical rates and performing sensitivity analysis.

Evaluating the Company's ability to forecast future rental revenue and related assumptions by comparing to historical results of operations.

/s/ Moss Adams LLP

Dallas, Texas
March 31, 2021

We have served as the Company's auditor since 2020.

F - 2

Report of Independent Registered Public Accounting Firm

Board of Directors and Stockholders
Natural Gas Services Group, Inc.
Midland, Texas

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheet of Natural Gas Services Group, Inc. (the “Company”) as of December 31, 2019, the related
consolidated  statements  of  operations,  stockholders’  equity,  and  cash  flows  for  the  year  ended  December  31,  2019,  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
financial position of the Company at December 31, 2029, and the results of its operations and its cash flows for each of the year ended December 31, 2019,
in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company's
internal control over financial reporting as of December 31, 2019, based on criteria established in Internal Control - Integrated Framework (2013) issued
by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) and our report dated March 31, 2020 expressed an adverse opinion
thereon.

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 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.

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 that 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.

/s/ BDO USA, LLP

We have served as the Company's auditor from 2010 to 2020.

Austin, Texas
March 31, 2020

F - 3

NATURAL GAS SERVICES GROUP, INC.
CONSOLIDATED BALANCE SHEETS
(in thousands)

December 31,

2020

2019

Current Assets:

ASSETS

Cash and cash equivalents
Trade accounts receivable, net of allowance for doubtful accounts of $1,161 and $918, respectively
Inventory
Federal income tax receivable
Prepaid income taxes
Prepaid expenses and other
Total current assets

Long-Term Inventory, net of allowance for obsolescence of $221 and $24, respectively
Rental equipment, net of accumulated depreciation of $175,802 and $162,348, respectively
Property and equipment, net of accumulated depreciation of $13,916 and $12,847, respectively
Right of use assets - operating leases, net of accumulated amortization $356
Intangibles, net of accumulated amortization of $2,008 and $1,883, respectively
Other assets

Total assets

LIABILITIES AND STOCKHOLDERS' EQUITY

Current Liabilities:
Accounts payable
Accrued liabilities
Line of credit
Current operating leases
Deferred income

Total current liabilities
Deferred income tax liability
Long-term operating leases
Other long-term liabilities

Total liabilities

Commitments and contingencies (Notes 6 and 17)
Stockholders’ Equity:
Preferred stock, 5,000 shares authorized, no shares issued or outstanding
Common stock, 30,000 shares authorized, par value $0.01; 13,296 and 13,178 shares issued, respectively
Additional paid-in capital
Retained earnings
Treasury shares, at cost, 38 shares
Total stockholders' equity

Total liabilities and stockholders' equity

$

$

$

$

28,925  $
11,884 
19,926 
11,538 
66 
379 
72,718 
1,065 
207,585 
21,749 
483 
1,151 
2,050 
306,801  $

2,373  $
6,770 
417 
198 
1,103 
10,861 
41,890 
285 
2,221 
55,257 

— 
133 
112,615 
139,286 
(490)
251,544 
306,801  $

11,592 
9,106 
21,080 
— 
40 
597 
42,415 
1,068 
217,742 
21,869 
604 
1,276 
1,603 
286,577 

1,975 
2,287 
417 
189 
640 
5,508 
31,243 
415 
1,718 
38,884 

— 
132 
110,573 
137,478 
(490)
247,693 
286,577 

See accompanying notes to these consolidated financial statements.

F - 4

 
 
 
 
 
 
 
 
 
NATURAL GAS SERVICES GROUP, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except earnings per share)

Revenue:
Rental income
Sales
Service and maintenance income
Total revenue
Operating costs and expenses:
Cost of rentals, exclusive of depreciation stated separately below
Cost of sales, exclusive of depreciation stated separately below
Cost of service and maintenance, exclusive of depreciation stated separately below
Selling, general and administrative expenses
Depreciation and amortization
Impairment of goodwill
Inventory allowance
Retirement of rental equipment
Total operating costs and expenses
Operating loss
Other income (expense):
Interest expense
Other income
Total other income, net
Loss before income taxes:
(Provision for) benefit from income taxes:
Current
Deferred
Total income tax benefit

Net income (loss)

Earnings (loss) per share:
Basic
Diluted
Weighted average shares outstanding:
Basic
Diluted

See accompanying notes to these consolidated financial statements.

F - 5

For the Years Ended December 31,

2020

2019

$

$

$
$

60,826  $
5,657 
1,572 
68,055 

28,506 
6,211 
714 
10,550 
25,198 
— 
184 
291 
71,654 
(3,599)

(14)
629 
615 
(2,984)

15,438 
(10,646)
4,792 
1,808  $

0.14  $
0.14  $

13,224 
13,261 

56,701 
19,763 
1,980 
78,444 

27,583 
16,097 
630 
10,710 
23,268 
10,039 
3,758 
1,512 
93,597 
(15,153)

(15)
611 
596 
(14,557)

31 
662 
693 
(13,864)

(1.06)
(1.06)

13,114 
13,114 

 
 
 
 
 
 
 
 
 
 
 
 
NATURAL GAS SERVICES GROUP, INC.
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY
(in thousands)

BALANCES, December 31, 2018
Exercise of common stock options
Compensation expense on common stock options
Issuance of restricted stock
Compensation expense on restricted common stock
Taxes paid related to net shares settlement of equity awards
Purchase of treasury shares
Net loss

BALANCES, December 31, 2019
Compensation expense on common stock options
Issuance of restricted stock
Compensation expense on restricted common stock
Taxes paid related to net shares settlement of equity awards
Net loss

BALANCES, December 31, 2020

Preferred Stock

Common Stock

Shares

Amount

Shares

Amount

Additional
Paid-In
Capital

Retained
Earnings

Treasury Stock

Shares

Amount

Total
Stockholders'
Equity

— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 

— 

$

$

— 
— 
— 
— 
— 
— 
— 
— 

— 
— 
— 
— 
— 
— 

— 

$

13,005 
56 
— 
117 
— 
— 
— 
— 

13,178 
— 
118 
— 
— 
— 

13,296 

$

130 
1 
— 
— 
1 
— 
— 
— 

132 
— 
— 
1 
— 
— 

133 

$

$

107,760 
505 
124 
— 
2,457 
(273)
— 
— 

110,573 
19 
— 
2,175 
(152)
— 

151,342 
— 
— 
— 
— 
— 
— 
(13,864)

137,478 
— 
— 
— 
— 
1,808 

$

112,615 

$

139,286 

— 
— 
— 
— 
— 
— 
38 
— 

38 
— 
— 
— 
— 
— 

38 

$

$

— 
— 
— 
— 
— 
— 
(490)
— 

(490)
— 
— 
— 
— 
— 

(490)

$

$

259,232 
506 
124 
— 
2,458 
(273)
(490)
(13,864)

247,693 
19 
— 
2,176 
(152)
1,808 

251,544 

See accompanying notes to these consolidated financial statements.

F - 6

 
NATURAL GAS SERVICES GROUP, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)

CASH FLOWS FROM OPERATING ACTIVITIES:

Net (loss) income

Adjustments to reconcile net (loss) income to net cash provided by operating activities:

For the Years Ended December 31,

2020

2019

$

1,808  $

(13,864)

Depreciation and amortization
Deferred taxes
Gain on disposal of assets
Retirement of rental equipment
Bad debt allowance (recovery)
Inventory allowance
Impairment of goodwill
Stock-based compensation
(Gain) loss on company owned life insurance

Changes in operating assets and liabilities:

Trade accounts receivables
Inventory
Prepaid income taxes and prepaid expenses
Accounts payable and accrued liabilities
Deferred income
Other

NET CASH PROVIDED BY OPERATING ACTIVITIES
CASH FLOWS FROM INVESTING ACTIVITIES:

Purchase of rental equipment, property and other equipment
Purchase of company owned life insurance
Proceeds from insurance claim
Proceeds from sale of property and equipment
NET CASH USED IN INVESTING ACTIVITIES
CASH FLOWS FROM FINANCING ACTIVITIES:

Proceeds of other long-term liabilities
Proceeds from exercise of stock options
Purchase of treasury shares
Taxes paid related to net share settlement of equity awards

NET CASH USED IN FINANCING ACTIVITIES
NET CHANGE IN CASH AND CASH EQUIVALENTS
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD

CASH AND CASH EQUIVALENTS AT END OF PERIOD
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:

Interest paid
Income taxes paid

NON-CASH TRANSACTIONS

Transfer of rental equipment to inventory
Transfer of inventory to rental equipment
Transfer of prepaids to rental equipment and inventory
Right of use asset acquired through an operating lease

25,198 
10,646 
(284)
291 
329 
184 
— 
2,195 
(168)

(3,107)
1,033 
(11,346)
4,880 
463 
527 
32,649 

(15,257)
(296)
— 
394 
(15,159)

(5)
— 
— 
(152)
(157)
17,333 
11,592 
28,925  $

14  $
105 

— 
— 
— 
77 

23,268 
(662)
(55)
1512 
664 
3,758 
10,039 
2,582 
(219)

(2,550)
8,256 
3,288 
(7,225)
559 
61 
29,412 

(69,938)
(302)
35 
30 
(70,175)

(16)
506 
(490)
(273)
(273)
(41,036)
52,628 
11,592 

39 
275 

836 
1,184 
958 
762 

$

$

See accompanying notes to these consolidated financial statements.

F - 7

 
 
 
 
 
 
 
 
 
 
 
NATURAL GAS SERVICES GROUP INC.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Description of Business

Natural Gas Services Group, Inc. (the "Company", “NGS”, "Natural Gas Services Group", "we" or "our") (a Colorado corporation), is a leading
provider  of  natural  gas  compression  equipment  and  services  to  the  energy  industry.  The  Company  manufactures,  fabricates,  rents,  sells  and  maintains
natural gas compressors and flare systems for oil and natural gas production and plant facilities. NGS is headquartered in Midland, Texas, with fabrication
facilities  located  in  Tulsa,  Oklahoma  and  Midland,  Texas,  and  service  facilities  located  in  major  oil  and  natural  gas  producing  basins  in  the  U.S.  The
Company was formed on December 17, 1998.

2. Summary of Significant Accounting Policies

Principles of Consolidation

The accompanying consolidated financial statements include the accounts of the Company, its subsidiary, NGSG Properties, LLC and the rabbi
trust  associated  with  the  Company’s  deferred  compensation  plan,  see  Note  12.  All  significant  intercompany  accounts  and  transactions  for  the  periods
presented have been eliminated in consolidation.

Use of Estimates

The  preparation  of  our  consolidated  financial  statements  in  conformity  with  generally  accepted  accounting  principles  in  the  United  States  of
America  requires  our  management  to  make  estimates  and  assumptions  that  affect  the  amounts  reported  in  these  consolidated  financial  statements  and
accompanying  notes.    Actual  results  could  differ  from  those  estimates.    Significant  estimates  include  fixed  asset  lives,  bad  debt  allowance  and  the
allowance for inventory obsolescence. Additionally, NGS conducts a yearly review of impairment of long-lived assets. Throughout the review, determining
factors are based on estimates that can significantly impact the carrying value of these assets. It is at least reasonably possible these estimates could be
revised in the near term and the revisions could be material.

Cash Equivalents and Financial Instruments

For  purposes  of  reporting  cash  flows,  we  consider  all  short-term  investments  with  an  original  maturity  of  three  months  or  less  to  be  cash
equivalents.  We  invest  our  cash  primarily  in  deposits  and  money  market  funds  with  commercial  banks.   At  times,  cash  balances  at  banks  and  financial
institutions may exceed federally insured amounts. We believe that the risk to our cash balance is minimal because we have chosen a large bank with strong
long-term ratings of Aa2/A+.

Accounts Receivable

Our trade receivables consist of customer obligations for the sale of compressors and flare systems due under normal trade terms, and operating
leases  for  the  use  of  our  natural  gas  compressors.   The  receivables  are  not  collateralized  except  as  provided  for  under  lease  agreements.    However,  we
typically require deposits of as much as 50% or use of progress payments for large custom sales contracts.  We perform ongoing credit evaluations of our
customers  and  adjust  credit  limits  based  on  management's  assessment  of  the  customer's  financial  condition  and  payment  history,  as  well  as  industry
conditions  and  general  economic  conditions.    We  continuously  monitor  collections  and  payments  from  our  customers,  and  maintain  a  provision  for
estimated credit losses based upon our historical experience and any specific customer collection issues that we have identified.  While such credit losses
have historically been within our expectations and the provisions established, we cannot guarantee that we will continue to experience the same credit loss
rates that we have in the past.  One customer accounted for 35% of our accounts receivable as of December 31, 2020 and 2019.  A significant change in the
liquidity or financial position of this customer could have a material adverse impact on the collectability of our accounts receivable and our future operating
results.  The allowance for doubtful accounts was $1.2 million and $0.9 million at December 31, 2020 and 2019, respectively. Management believes that
the allowance is adequate; however, actual write-offs may exceed the recorded allowance.

F - 8

A summary of our allowance for doubtful accounts is as follows:

($ in thousands)
Beginning balance
Accruals
Recoveries
Write-offs

Ending balance

Revenue Recognition Policy

 Year Ended December 31,

2020

2019

$

$

(918)
(329)
— 
86 
(1,161)

$

$

(291)
(664)
— 
37 
(918)

Revenue is measured based on a consideration specified in a customer’s contract, excluding any sale incentives and taxes collected on behalf of
third parties (i.e. sales and property taxes). Revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects
the consideration that we expect to receive for those goods or services. To recognize revenue, we (i) identify the contract(s) with a customer; (ii) identify
the performance obligations in the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the
contract;  and  (v)  recognize  revenue  when,  or  as,  we  satisfy  the  performance  obligation(s).  Shipping  and  handling  costs  incurred  are  accounted  for  as
fulfillment costs and are included in cost of revenues in our Consolidated Statements of Operations.

Nature of Goods and Services

The following is a description of principal activities from which the Company generates its revenue:

Rental Revenue. The Company generates revenue from renting compressors and flare systems to our customers. These contracts, which all qualify
as operating leases under ASC Topic 842, Leases (ASC 842), may also include a fee for servicing the compressor or flare during the rental contract. Our
rental contracts typically range from six to 24 months, with our larger horsepower compressors having contract terms of up to 60 months. Our revenue is
recognized over time, with equal monthly payments over the term of the contract. After the terms of the contract have expired, a customer may renew their
contract or continue renting on a monthly basis thereafter. In accordance ASC 842 – Leases, we have applied the practical expedient ASC 842-10-15-42A,
which allows the Company to combine lease and non-lease components.

Sales  Revenue.  The  Company  generates  revenue  by  the  sale  of  custom/fabricated  compressors,  flare  systems  and  parts,  as  well  as,

exchange/rebuilding customer owned compressors and sale of used rental equipment.

Custom/fabricated  compressors  and  flare  systems  -  The  Company  designs  and  fabricates  compressors  and  flares  based  on  the  customer’s
specifications outlined in their contract. Though the equipment being built is customized by the customer, control under these contracts does not pass to the
customer until the compressor or flare package is completed and shipped, or in accordance with a bill and hold arrangements the customer accepts title and
assumes the risk and rewards of ownership. We request some of our customers to make progressive payments as the product is being built; these payments
are recorded as a contract liability on the Deferred Income line on the consolidated balance sheet until control has been transferred. These contracts also
may include an assurance warranty clause to guarantee the product is free from defects in material and workmanship for a set duration of time; this is a
standard industry practice and is not considered a performance obligation.

From time to time, upon the customer’s written request, we recognize revenue when manufacturing is complete and the equipment is ready for
shipment.  At  the  customer’s  request,  we  will  bill  the  customer  upon  completing  all  performance  obligations,  but  before  shipment.  The  customer  will
formally request we ship the equipment per their direction from our manufacturing facility at a later specified date and that we segregate the equipment
from our finished goods, such that they are not available to fill other orders. Per the customer’s agreement change of control is passed to the customer once
the equipment is complete and ready for shipment. We have operated using bill and hold agreements with certain customers for many years, with consistent
satisfactory results for both the customer and us. The credit terms on these agreements are consistent with the credit terms on all other sales. All control is
shouldered  by  the  customer  and  there  are  no  exceptions  to  the  customer’s  commitment  to  accept  and  pay  for  the  manufactured  equipment.  Revenues
recognized  related  to  bill  and  hold  arrangements  for  the  years  ended  December  31,  2020  and  2019  was  approximately  $0.9  million  and  $11.6  million,
respectively.

Parts - Revenue is recognized after the customer obtains control of the parts. Control is passed either by the customer taking physical possession or

the parts being shipped. The amount of revenue recognized is not adjusted for expected returns, as our historical part returns have been de minimis.

F - 9

Exchange or rebuilding customer owned compressors - Based on the contract, the Company will either exchange a new/rebuilt compressor for the
customer’s  malfunctioning  compressor  or  rebuild  the  customer’s  compressor.  Revenue  is  recognized  after  control  of  the  replacement  compressor  has
transferred to the customer based on the terms of the contract, i.e., by physical delivery, delivery and installment, or shipment of the compressor.

Used compressors or flares - From time to time, a customer may request to purchase a used compressor or flare out of our rental fleet. Revenue
from the sale of rental equipment is recognized when the control has passed to the customer based on the terms of the contract, i.e. when the customer has
taken physical possession or the equipment has been shipped.

Service and Maintenance Revenue. The Company provides routine or call-out services on customer owned equipment. Revenue is recognized after

services in the contract are rendered.

Payment terms for sales revenue and service and maintenance revenue discussed above are generally 30 to 60 days although terms for specific

customers can vary. Also, the transaction prices are not subject to variable consideration constraints.

Disaggregation of Revenue

The following table shows the Company's revenue disaggregated by product or service type for the years ended:

Compressors - sales
Flares - sales
Other (Parts/Rebuilds) - sales
Service and maintenance
Total revenue from contracts with customers
Add: ASC 842 rental revenue

Total revenue

Contract Balances

Year Ended December 31,

2020

2019

$

$

(in thousands)
2,211  $
489 
2,957 
1,572 
7,229 
60,826 
68,055  $

As of December 31, 2020 and 2019, we had the following receivables and deferred income from contracts with customers:

Accounts Receivable

Accounts receivable - contracts with customers
Accounts receivable - ASC 842

Total Accounts Receivable
Less: Allowance for doubtful accounts

Total Accounts Receivable, net

Deferred income

2020

December 31,

(in thousands)

2019

$

$

3,243  $
9,802 
13,045 
(1,161)
11,884 

1,103  $

15,185 
959 
3,619 
1,980 
21,743 
56,701 
78,444 

3,061 
6,963 
10,024 
(918)
9,106 

640 

The Company recognized $73,000 in revenue for the year ended December 31, 2020 that was included in deferred income at the beginning of
2020. For the period ended December 31, 2019, the Company recognized revenue of $48,000 from amounts related to sales that were included in deferred
income at the beginning of 2019.

F - 10

The increases (decreases) of accounts receivable and deferred income were primarily due to normal timing differences between our performance

and the customers’ payments.

Transaction Price Allocated to the Remaining Performance Obligations

As of December 31, 2020, the Company did not have revenue related to unsatisfied performance obligations.

Contract Costs

The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the
Company otherwise would have recognized is one year or less. These costs are included in selling, general and administrative expense on our Consolidated
Statements of Operations.

Leases

On January 1, 2019, we adopted ASC 842 using the modified retrospective method. We recognized the cumulative effect of initially applying the
new lease standard and had no adjustments to retained earnings. The comparative information has not been restated and continues to be reported under the
lease accounting standard in effect for those periods.

The new lease standard requires all leases to be reported on the balance sheet as right-of-use assets and lease obligations. We elected the practical
expedients  permitted  under  the  transition  guidance  of  the  new  standard  that  retained  the  lease  classification  and  initial  direct  costs  for  any  leases  that
existed prior to adoption of the standard. We did not reassess whether any contracts or land easements entered into prior to adoption are leases or contain
leases.

The cumulative effect of the changes made to our consolidated balance sheet at January 1, 2019, for the adoption of ASC 842 was as follows:

Balance Sheet
Assets
Right of use assets
Liabilities
Current portion of operating leases
Long term portion of operating leases

Total lease liabilities

Balance at December
31, 2018

Adjustments due to
ASC 842
(in thousands)

Balance at January 1,
2019

$

$

$

—  $

—  $
— 
—  $

451  $

126  $
325 
451  $

451 

126 
325 
451 

The Company, as a lessee, applies the practical expedient to not separate non-lease components from lease components, therefore, accounting for

each separate lease component and its associated non-lease component, as a single lease component.

Each lease that 1) contains the same timing and pattern of transfer for lease and non-lease components; and 2) if the lease component, if accounted

for separately, would be classified as an operating lease, the Company elects to not separate non-lease components from lease components.
Major Customers and Concentration of Credit Risk

Sales  and  rental  income  from  Occidental  Permian,  LTD.  ("Oxy")  in  2020  and  2019  amounted  to  30%  and  36%  of  revenue,  respectively.  No
other single customer accounted for more than 10% of our revenues in 2020 and 2019. Oxy's accounts receivable balances amounted to 35% and 35% of
our accounts receivable as of December 31, 2020 and 2019, respectively. No other customers amounted to more than 10% of our accounts receivable as of
December 31, 2020 and 2019.

F - 11

 
 
Inventory

Inventory (current and long-term) is valued at the lower of cost and net realizable value.  The cost of inventories is determined by the weighted
average method. We regularly review inventory quantities on hand and record a provision for excess and obsolete inventory based primarily on current and
anticipated customer demand and production requirements. The Company assesses anticipated customer demand based on current and upcoming capital
expenditure budgets of its major customers as well as other significant companies in the industry, along with oil and natural gas price forecasts and other
factors affecting the industry. In addition, our long-term inventory consists of raw materials that remain viable but which the Company does not expect to
sell within the next year.

Rental Equipment and Property and Equipment

Rental  equipment  and  property  and  equipment  are  recorded  at  cost  less  accumulated  depreciation,  except  for  work-in-progress  on  new  rental
equipment which is recorded at cost until it’s complete and added to the fleet. Depreciation is computed using the straight-line method over the estimated
useful lives of the assets. Our rental equipment has an estimated useful life between 15 and 25 years, while our property and equipment has an estimate
useful lives which range from 3 to 39 years.  The majority of our property and equipment, including rental equipment, is a direct cost to generating revenue.

We  assess  the  impairment  of  rental  equipment  and  property  and  equipment  whenever  events  or  changes  in  circumstances  indicate  that  the  net
recorded amount may not be recoverable.  The following factors could trigger an impairment review: significant underperformance relative to historical or
projected future cash flows; significant adverse changes in the extent or manner in which asset (or asset group) is being used or its condition, including a
meaningful drop in fleet utilization over the prior four quarters; significant negative industry or company-specific trends or actions, including meaningful
capital expenditure budget reductions by our major customers or other sizable exploration and production or midstream companies, as well as significant
declines  in  oil  and  natural  gas  prices;  legislative  changes  prohibiting  us  from  leasing  our  units  or  flares;  or  poor  general  economic  conditions.  An
impairment loss is recognized if the future undiscounted cash flows associated with the asset (or asset group) and the estimated fair value of the asset are
less than the asset's carrying value.

Sales  of  equipment  out  of  the  rental  fleet  are  included  with  sales  revenue  and  cost  of  sales,  while  retirements  of  units  are  shown  a  separate
operating expense. Gains and losses resulting from sales and dispositions of other property and equipment are included with other income. Maintenance
and repairs are charged to cost of rentals as incurred.

Goodwill

Goodwill represents the cost in excess of fair value of the identifiable net assets acquired. Goodwill is tested annually for impairment or as needed
upon the occurrence of certain events or substantive changes in circumstances that indicate goodwill is more likely than not impaired. As further described
in Note 7 of these financial statements, we fully impaired the Company's goodwill during the third quarter of 2019, resulting in a goodwill impairment
charge of $10.0 million for the year ended December 31, 2019.

Intangibles

At December 31, 2020 and 2019, NGS had intangible assets, which relate to developed technology and a trade name. Developed technology is
amortized on a straight-line basis with a useful life of 20 years, with a weighted average remaining life of approximately five years as of December 31,
2020.  NGS has an intangible asset related to the trade name of SCS which was acquired in our acquisition of Screw Compression Systems in January
2005.  This asset is not being amortized as it has been deemed to have an indefinite life.

Our policy is to review intangibles that are being amortized for impairment when indicators of impairment are present. In  addition,  it  is  our
policy to review indefinite-lived intangible assets for impairment annually or when indicators of impairment are present. We review intangibles through an
assessment  of  the  estimated  future  cash  flows  related  to  such  assets.    In  the  event  that  assets  are  found  to  be  carried  at  amounts  in  excess  of  estimated
undiscounted  future  cash  flows,  then  the  assets  will  be  adjusted  for  impairment  to  a  level  commensurate  with  a  discounted  cash  flow  analysis  of  the
underlying assets.  

F - 12

Warranty

We accrue amounts for estimated warranty claims based upon current and historical product warranty costs and any other related information
known.  There was no warranty reserve as of December 31, 2020. The warranty reserve was $74,000 for December 31, 2019, and is included in accrued
liabilities on the consolidated balance sheet.

Income Taxes

Deferred  tax  assets  and  liabilities  are  recognized  for  the  future  tax  consequences  attributable  to  temporary  differences  between  the  financial
statement carrying amounts of assets and liabilities and their respective tax bases, and operating losses and tax credit carry-forwards.  Deferred tax assets
and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to
be recovered or settled. We assess the likelihood that our deferred tax assets will be recovered from future taxable income and, to the extent we believe that
recovery is not probable, we establish a valuation allowance.  To the extent we establish a valuation allowance or increase this allowance in a period, we
include an expense in the tax provision in the statement of income.

ASC Topic 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax
position taken or expected to be taken in a tax return. In order to record any financial statement benefit, we are required to determine, based on technical
merits of the position, whether it is more likely than not (a likelihood of more than 50 percent) that a tax position will be sustained upon examination,
including resolution of any related appeals or litigation processes. If that step is satisfied, then we must measure the tax position to determine the amount of
benefit to recognize in the financial statements. The tax position is measured at the largest amount of the benefit that is greater than 50 percent likely of
being realized upon ultimate settlement.

Our policy regarding income tax interest and penalties is to expense those items as other expense.

We account for uncertain tax positions in accordance with guidance in FASB ASC 740, which prescribes the minimum recognition threshold a tax
position taken or expected to be taken in a tax return is required to meet before being recognized in the financial statements. We have no uncertain tax
positions as of December 31, 2020.

Fair Value Measurement

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market
participants  at  the  measurement  date  under  current  market  conditions.  ASC  Topic  820  established  a  fair  value  hierarchy,  which  requires  an  entity  to
maximize the use of observable inputs when measuring fair value. These inputs are categorized as follows:

Level 1- quoted prices in an active market for identical assets or liabilities;

Level 2- quoted prices in an active market for similar assets or liabilities, inputs other than quoted prices that are observable for similar assets or liabilities,
inputs derived principally from or corroborated by observable market data by correlation or other means; and

Level 3- valuation methodology with unobservable inputs that are significant to the fair value measurement.

Management believes that the fair value of our cash and cash equivalents, trade receivables, accounts payable and line of credit at December 31, 2020 and
2019 approximate their carrying values due to the short-term nature of the instruments or the use of prevailing market interest rates. 

Segments and Related Information

ASC 280-10-50, “Operating Segments”, define the characteristics of an operating segment as a) being engaged in business activity from which
it may earn revenue and incur expenses, b) being reviewed by the company's chief operating decision maker (CODM) for decisions about resources to be
allocated and assess its performance and c) having discrete financial information.  Although we indeed look at our products to analyze the nature of our
revenue, other financial information, such as certain costs and expenses, net income and EBITDA are not captured or analyzed by these categories.  Our
CODM does not make resource allocation decisions or access the performance of the business based on these categories, but rather in the aggregate. Based
on this, management believes that it operates in one business segment.

F - 13

    
 
In  their  analysis  of  product  lines  as  potential  operating  segments,  management  also  considered  ASC  280-10-50-11,  “Aggregation  Criteria”,
which allows for the aggregation of operating segments if the segments have similar economic characteristics and if the segments are similar in each of the
following areas:

•

•

•

•

•

The nature of the products and services;

The nature of the production processes;

The type or class of customer for their products and services;

The methods used to distribute their products or provide their services; and

The nature of the regulatory environment, if applicable.

We are engaged in the business of designing and manufacturing compressors and flares. Our compressors and flares are sold and rented to our
customers.  In  addition,  we  provide  service  and  maintenance  on  compressors  in  our  fleet  and  to  third  parties.  These  business  activities  are  similar  in  all
geographic areas.  Our manufacturing process is essentially the same for the entire Company and is performed in house at our facilities in Midland, Texas
and Tulsa, Oklahoma. Our customers primarily consist of entities in the business of producing natural gas.  The maintenance and service of our products is
consistent across the entire Company and is performed via an internal fleet of vehicles.  The regulatory environment is similar in every jurisdiction in that
the most impacting regulations and practices are the result of federal energy policy. In addition, the economic characteristics of each customer arrangement
are similar in that we maintain policies at the corporate level.

Recently Issued Accounting Pronouncements

In March 2020, the FASB issued ASU 2020-04, Reference Rate Reform, which provides temporary optional guidance to companies impacted by
the transition away from the London Interbank Offered Rate ("LIBOR"). The guidance provides certain expedients and exceptions to applying GAAP in
order to lessen the potential accounting burden when contracts, hedging relationships and other transactions that reference LIBOR as a benchmark rate are
modified. This guidance is effective upon issuance and expires on December 31, 2022. We are currently evaluating the impact of the LIBOR transition and
this ASU 2020-04 on our consolidated financial statements.

In December 2019, the FASB issued ASU 2019-12, Income Taxes (ASC Topic 740), which simplifies accounting for income taxes by removing
certain  exceptions  to  various  tax  accounting  principles  and  clarifies  other  existing  guidance  in  order  to  improve  consistency  of  application.  These
amendments are effective for public entities for interim and annual periods beginning after December 15, 2020. We are currently evaluating the impact of
ASU 2019-12 on our consolidated financial statements and note disclosures.

In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (ASC Topic 326): Measurement of Credit Losses on Financial
Instruments.  The  amendments  to  ASC  Topic  326  require  immediate  recognition  of  estimated  credit  losses  expected  to  occur  over  the  remaining  life  of
many financial assets, including trade receivables. For companies that qualify as smaller reporting companies, the amendments in this update are effective
for  interim  and  annual  periods  beginning  after  January  1,  2023.  We  are  currently  evaluating  the  impact  of  ASU  2016-13  on  our  consolidated  financial
statements and note disclosures.

3.  Inventory

Our  inventory,  net  of  allowance  for  obsolescence  of  $221,000  and  $24,000  at  December  31,  2020  and  2019,  respectively,  consisted  of  the

following:

F - 14

 
 
Raw materials - current
Work-in-process
Finished goods

Inventory - current

Raw materials - long term (net of allowances of $221 and $24, respectively)

Inventory - total

December 31,

2020

2019

(in thousands)

$

$

18,026  $
1,900 
— 
19,926 
1,065 
20,991  $

19,388 
1,692 
— 
21,080 
1,068 
22,148 

Our long-term inventory consists of raw materials that remain viable but which the Company does not expect to sell within the next year.

Inventory Allowance

Given its concerns about the industry backdrop, Company management determined during 2019 that an increase of its inventory allowance was
necessary.  Due  to  the  slow  moving  nature  or  obsolescence  of  a  portion  of  its  long-term  inventory  and  inventory  related  to  the  retirement  of  rental
equipment, management recorded a charge of $3.8 million to write off inventory that will not be recoverable in the future. For the year ended December 31,
2020, inventory allowance totaled $0.3 million. We ended 2020 with an inventory allowance balance of $221,000.

A summary of our inventory allowance is as follows:

Beginning balance
Accruals
Write-offs
Ending balance

4.  Rental Equipment, Property and Equipment

Rental Equipment

Year Ended December 31,

2020

2019

(in thousands)

$

$

(24)
(251)
54 
(221)

(19)
(3,758)
3,753 
(24)

Our rental equipment and associated accumulated depreciation as of December 31, 2020 and 2019, respectively, consisted of the following:

Compressor units
Work-in-progress
Rental equipment
Accumulated depreciation

Rental equipment, net of accumulated depreciation

December 31,

2020

2019

(in thousands)

$

$

379,623  $
3,764 
383,387 
(175,802)
207,585  $

370,961 
9,129 
380,090 
(162,348)
217,742 

Our  rental  equipment  has  an  estimated  useful  life  between  15  and  25  years.  Depreciation  expense  for  rental  equipment  was  $22.7  million  and

$21.4 million for the year ended December 31, 2020 and 2019, respectively.

F - 15

 
Retirement of Rental Equipment

Company management routinely reviews its inventory of rental equipment for retirement or obsolescence. During 2020, management reviewed the
rental fleet to determine which units were not of the type, configuration, make or model that our customers are demanding or that were not cost efficient to
refurbish, maintain and/or operate. As a result of this review, we determined 216 units should be retired from our rental fleet. Accordingly, we recorded a
$0.3 million loss on retirement of rental equipment during the year ended December 31, 2020.

During our review of our rental compressor units in 2019, we determined 327 units should be retired from our rental fleet. We recorded a $1.5

million loss on retirement of rental equipment.

Property and Equipment

Property and equipment consists of the following at December 31, 2020 and 2019:

Land
Building
Building and leasehold improvements
Office equipment and furniture
Software
Machinery and equipment
Vehicles
Total

Less accumulated depreciation

Total

Useful Lives
(Years)

December 31,

2020

2019

—
39
39
5
5
7
3

$

$

($ in thousands)
1,680  $

18,977 
1,168 
2,016 
573 
3,653 
7,598 
35,665 
(13,916)
21,749  $

1,290 
18,632 
1,168 
2,001 
573 
3,492 
7,560 
34,716 
(12,847)
21,869 

Depreciation expense for property and equipment was $2.3 million and $1.7 million for the year ended December 31, 2020 and 2019, respectively.

Depreciation Expense by Product Line

The following table depicts annual depreciation expense associated with each product line as well as our corporate activities at December 31, 2020

and 2019:

Rentals
Sales
Service & Maintenance
Corporate

Total

5.  Rental Activity

December 31,

2020

2019

(in thousands)
24,255  $
281 
42 
495 
25,073  $

22,596 
275 
37 
235 
23,143 

$

$

We rent natural gas compressor packages to entities in the petroleum industry.  These rental arrangements are classified as operating leases and

generally have original terms of six months to sixty months and continue on a month-to-month basis thereafter. 

F - 16

 
 
Future minimum rent payments for arrangements not on a month-to-month basis at December 31, 2020 are as follows:
(in thousands)
21,565
15,084
13,763
8,590
5,845
13,880
78,727

Years Ending December 31,
2021
2022
2023
2024
2025
Thereafter

$

Total

$

6. Leases

The Company determines if an arrangement is a lease at inception by assessing whether it conveys the right to control the use of an identified asset
for a period of time in exchange for consideration. The Company’s leases are primarily related to property leases for its field offices. The Company's leases
have  remaining  lease  terms  of  one  to  nine  years.  Renewal  and  termination  options  are  included  in  the  lease  term  when  it  is  reasonably  certain  that  the
Company will exercise the option.

The Company's lease agreements do not contain any contingent rental payments, material residual guarantees or material restrictive covenants.

Right of use assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease
term. As substantially all of the Company's leases do not provide an implicit rate, the Company uses its incremental borrowing rate, which is based on a
fully  collateralized  loan  over  the  lease  term,  to  determine  the  present  value  of  lease  payments.  Based  on  the  present  value  of  lease  payments  for  the
Company's  existing  leases,  the  Company  recorded  net  lease  assets  and  lease  liabilities  of  approximately  $451,000,  respectively,  upon  adoption.  The
Company had no finance leases. The new lease standard did not materially impact the Company's consolidated statements of income and had no impact on
the Company's consolidated statements of cash flows. The impact of the new lease standard on the December 31, 2020 and 2019 consolidated balance sheet
was as follows:

Classification on Consolidated
Balance Sheet

December 31,

2020

2019

Operating lease assets

Right of use assets-operating leases

Current lease liabilities
Noncurrent lease liabilities

Total lease liabilities

Weighted average remaining lease term in years
Implicit Rate

Current operating leases
Long-term operating leases

$

$

$

($ in thousands)
483 

$

198 
285 
483 

$

$

1.5
3.2 %

604 

189 
415 
604 

2.6
3.1 %

Operating lease costs are recognized on a straight-line basis over the lease term. Total operating lease costs for the year ended December 31, 2020

was approximately $550,000.

Cash paid for amounts included in the measurement of lease liabilities

Operating lease cost 

(1) (2)

F - 17

December 31,

2020

2019

(in thousands)

$

550  $

548 

(1)    Lease costs are classified on the Consolidated Statements of Operations in cost of sales, cost of compressors and selling, general and administrative
expenses.

(2)     Includes costs of $333,000 for leases with terms of 12 months or less and $217,000 for leases with terms greater than 12 months for the year ended
December 31, 2020. Includes costs of $350,000 for leases with terms of 12 months or less and $198,000 for leases with terms greater than 12 months for
the year ended December 31, 2019.

The following table shows the future maturities of lease liabilities:

Years Ending December 31,

Lease Liabilities
(in thousands)

2021
2022
2023
2024
2025
Thereafter

Total lease payments

Less: Imputed interest

Total

$

$

211 
76 
38 
38 
38 
130 
531 
(48)
483 

Rent expense under such leases was $217,000 and $198,000 for the years ended December 31, 2020 and 2019, respectively.

7. Goodwill

Goodwill represents the cost in excess of fair value of the identifiable net assets acquired. Goodwill is tested annually for impairment or as needed
upon  the  occurrence  of  certain  events  or  substantive  changes  in  circumstances  that  indicate  goodwill  is  more  likely  than  not  impaired.  During the third
quarter of 2019, the Company examined various qualitative factors to determine if a quantitative goodwill impairment test was needed. For several months
prior  to  the  end  of  the  third  quarter  of  2019,  the  Company  experienced  a  significant  decline  in  stock  price,  which  was  reflective  of  the  significant
deterioration of stock prices of companies throughout the oilfield services sector. In addition, the Company noted its largest customer as well as several
other exploration and production companies had announced significant reductions to their 2020 capital expenditures budgets compared to those in 2019.
These  reductions  clearly  indicated  lower  demand  for  oilfield  services,  including  compression  services,  in  2020  compared  to  2019.  In  addition,  the
reductions  reflected  the  deteriorated  equity  markets  for  energy  companies  and  demands  from  institutional  investors  that  energy  companies  keep  capital
spending within operating cash flow. After considering these factors and various other industry, economic and company-specific factors, we calculated our
market  capitalization  (based  on  our  closing  stock  price)  as  of  September  30,  2019,  and  compared  it  to  the  carrying  value  of  our  net  assets.  Since  the
carrying  value  of  our  net  assets  exceeded  our  market  capitalization  and  after  considering  all  of  the  aforementioned  qualitative  factors,  Company
management determined that it was more likely than not that the fair value of the Company’s net assets was less than its carrying amount.

As a result of our qualitative assessment, we proceeded to perform our quantitative goodwill impairment analysis, where we used an independent
valuation specialist to assist us in determining the fair value of our net assets. In this impairment analysis, the estimated fair value of our net assets was
determined utilizing market and income-based approaches. Determining fair value in this analysis required significant judgment, including judgments about
appropriate  comparable  companies,  appropriate  discount  rates  and  our  estimated  future  cash  flows,  which  are  subject  to  change.  As  a  result  of  our
quantitative evaluation, we recorded a goodwill impairment charge of $10.0 million in 2019 eliminating our goodwill balance at that date.

F - 18

8.  Intangibles

At  December  31,  2020  and  2019,  the  Company  had  intangible  assets,  which  relate  to  developed  technology  and  a  trade  name.  The  carrying
amount net of accumulated amortization at December 31, 2020 and 2019 was $1.2 million and $1.3 million, respectively. Amortization expense recognized
in each of the years ending December 31, 2020 and 2019 was $125,000. Estimated amortization expense for the years 2021-2024 is $125,000 per year. The
Company has an intangible asset with a gross carrying value of $654,000 at December 31, 2020 related to the trade name of SCS which was acquired in our
acquisition of Screw Compression Systems in January 2005.  This asset is not being amortized as it has been deemed to have an indefinite life.

The following table represents the identified intangible assets by major asset class (in thousands):

December 31, 2020

December 31, 2019

Useful Life
(years)
20
Indefinite

Gross
Carrying
Value

$

$

2,505  $
654 
3,159  $

Accumulated
Amortization

Net Book
Value

Gross
Carrying
Value

Accumulated
Amortization

Net Book
Value

2,008  $
— 
2,008  $

497 
654 
1,151 

$

$

2,505  $
654 
3,159  $

1,883  $
— 
1,883  $

622 
654 
1,276 

Developed Technology
Trade Name

Total

Our policy is to review intangibles that are being amortized for impairment when indicators of impairment are present. In  addition,  it  is  our
policy to review indefinite-lived intangible assets for impairment annually or when indicators of impairment are present. We review intangibles through an
assessment  of  the  estimated  future  cash  flows  related  to  such  assets.    In  the  event  that  assets  are  found  to  be  carried  at  amounts  in  excess  of  estimated
undiscounted  future  cash  flows,  then  the  assets  will  be  adjusted  for  impairment  to  a  level  commensurate  with  a  discounted  cash  flow  analysis  of  the
underlying assets.  Based upon our analysis, we experienced no impairment of intangible assets (excluding goodwill) during the years ended December 31,
2020 or 2019.

In addition, in conjunction with our quantitative assessment of goodwill, we used the services of an independent valuation specialist to assist us in
determining the fair value of our trade name during the third quarter of 2019. In this impairment analysis, the estimated fair value of our trade name was
determined utilizing an income-based approach that required significant judgment, including those about an appropriate royalty rate and discount rate. This
analysis indicated no impairment of our trade name.

9. Credit Facility

We had a senior secured revolving credit agreement with JP Morgan Chase Bank, N.A (the "Amended Credit Agreement") that matured on March
31,  2021.  Please  see  Note  18  -  Subsequent  Events  for  further  discussion  of  the  maturity  event.  The  Amended  Credit  Agreement  had  an  aggregate
commitment of $30 million, subject to collateral availability. We also had a right to request from the Lender, on an uncommitted basis, an increase of up to
$20 million on the aggregate commitment (which could have potentially increased the commitment amount to $50 million).
Borrowing Base. At any time before the maturity of the Amended Credit Agreement, we could draw, repay and re-borrow amounts available under the
borrowing  base  up  to  the  maximum  aggregate  availability  discussed  above.  Generally,  the  borrowing  base  equaled  the  sum  of  (a)  80%  of  our  eligible
accounts receivable plus (b) 50% of the book value of our eligible general inventory (not to exceed 50% of the commitment amount at the time) plus (c)
75% of the book value of our eligible equipment inventory.  JPMorgan Chase Bank (the “Lender”) could adjust the borrowing base components if material
deviations in the collateral were discovered in audits of the collateral. We had $29.5 million borrowing base availability at December 31, 2020 under the
terms of our Amended Credit Agreement.

Interest and Fees.  Under the terms of the Amended Credit Agreement, we had the option of selecting the applicable variable rate for each revolving loan,
or portion thereof, of either (a) LIBOR multiplied by the Statutory Reserve Rate (as defined in the Amended Credit Agreement), with respect to this rate,
for Eurocurrency funding, plus the Applicable Margin (“LIBOR-based”), or (b) CB Floating Rate, which is the Lender's Prime Rate less the Applicable
Margin; provided, however, that no more than three LIBOR-based borrowings under the agreement could be outstanding at any one time. For purposes of
the LIBOR-based interest rate, the Applicable Margin is 1.50%. For purposes of the CB Floating Rate, the Applicable Margin is 1.25%.

F - 19

 
 
Accrued interest was payable monthly on outstanding principal amounts, provided that accrued interest on LIBOR-based loans was payable at the
end of each interest period, but in no event less frequently than quarterly. In addition, fees and expenses were payable in connection with our requests for
letters of credit (generally equal to the Applicable Margin for LIBOR-related borrowings multiplied by the face amount of the requested letter of credit)
and administrative and legal costs.

Maturity.  The  maturity  date  of  the  Amended  Credit  Agreement,  originally  scheduled  for  December  31,  2020,  was  extended  to  March  31,  2021  on
December 29, 2020, at which time all amounts borrowed under the agreement will be due and outstanding letters of credit must be cash collateralized. The
agreement could be terminated early upon our request or the occurrence of an event of default.

Security.  The  obligations  under  the  Amended  Credit  Agreement  were  secured  by  a  first  priority  lien  on  all  of  our  inventory  and  accounts  and  lease
receivables, along with a first priority lien on a variable number of our leased compressor equipment the book value of must be maintained at a minimum
of  2.00  to  1.00  commitment  coverage  ratio  (such  ratio  being  equal  to  (i)  the  amount  of  the  borrowing  base  as  of  such  date  to  (ii)  the  amount  of  the
commitment as of such date.)

Covenants. The Amended Credit Agreement contained customary representations and warranties, as well as covenants which, among other things, limited
our ability to incur additional indebtedness and liens; enter into transactions with affiliates; make acquisitions in excess of certain amounts; pay dividends;
redeem or repurchase capital stock or senior notes; make investments or loans; make negative pledges; consolidate, merge or effect asset sales; or change
the nature of our business. In addition, we also had certain financial covenants that required us to maintain a leverage ratio less than or equal to 2.50 to 1.00
as of the last day of each fiscal quarter.

Events of Default and Acceleration. The Amended Credit Agreement contained customary events of default for credit facilities of this size and type, and
included, without limitation, payment defaults; defaults in performance of covenants or other agreements contained in the loan documents; inaccuracies in
representations and warranties; certain defaults, termination events or similar events; certain defaults with respect to any other Company indebtedness in
excess  of  $50,000;  certain  bankruptcy  or  insolvency  events;  the  rendering  of  certain  judgments  in  excess  of  $150,000;  certain  ERISA  events;  certain
change in control events and the defectiveness of any liens under the secured revolving credit facility. Obligations under the Amended Credit Agreement
could be accelerated upon the occurrence of an event of default.

As of December 31, 2020, we were in compliance with all covenants in our Amended Credit Agreement.  A default under our Credit Agreement
would trigger the acceleration of our bank debt so that it is immediately due and payable.  Such default would likely limit our ability to access other credit.
At  December  31,  2020  our  balance  on  the  line  of  credit  was  $417,000.  Our  weighted  average  interest  rate  for  the  year  ended  December  31,  2020  was
2.75%.

10. CARES Act Loan

On April 10, 2020, the Company entered into a promissory note (the "Loan") for an unsecured loan in the amount of $4.6 million through the
Paycheck Protection Program ("PPP") established by the CARES Act and administered by the U.S. Small Business Administration ("SBA"). The Loan was
made for the purpose of securing funding for salaries and wages of employees that may have otherwise been displaced by the outbreak of COVID-19 and
the resulting detrimental impact on the Company's business. JPMorgan Chase Bank, N.A. (the "Lender") processed and funded the Loan.

On  April  23,  2020,  the  SBA  advised  that  companies  that  applied  for  and  received  PPP  loans  that  had  other  sufficient  sources  of  liquidity  that
would not be "significantly detrimental" to their businesses may be subject to increased scrutiny and potential liability unless these companies repaid their
loans in full by May 7, 2020. While the Company believes it was justified in seeking the Loan and the funds received were earmarked for the purposes set
forth in the original PPP regulations, the Company voluntarily repaid the Loan, with accrued interest, to the Lender on May 4, 2020.

11.  Income Taxes

The (provision for) benefit from income taxes for the years ended December 31, 2020 and 2019, consists of the following (in thousands):

F - 20

 
 
 
 
2020

2019

Current benefit (provision):
Federal benefit (expense)
State (expense) benefit

Total current benefit (provision)

Deferred benefit (provision):
Federal benefit (expense)
State

Total deferred benefit (expense)

Total benefit (provision)

$

$

15,587  $
(149)
15,438 

(10,234)
(412)
(10,646)

4,792  $

The effective tax rate for the years ended December 31, 2020 and 2019, differs from the statutory rate as follows:

Statutory rate
State and local taxes
Uncertain tax position
Goodwill impairment
Research and development credit
Stock based compensation
Nondeductible compensation
Effect of CARES Act
Other
Effective rate
Deferred re-measurement for rate change

Effective rate

2020

2019

21.0 %
(17.0)%
— %
— %
— %
(13.1)%
(11.6)%
180.3 %
0.5 %
160.1 %
— %
160.1 %

86 
(55)
31 

662 
— 
662 
693 

21.0 %
(3.7)%
— %
(13.7)%
1.4 %
(0.8)%
(0.3)%
— %
0.9 %
4.8 %
— %
4.8 %

On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") was enacted in response to the economic impact
caused  by  the  COVID-19  pandemic.  The  CARES  Act,  among  other  things,  permits  federal  income  tax  net  operating  loss  ("NOL")  carryovers  and
carrybacks to offset 100% of taxable income for taxable years beginning before 2021. In addition, the CARES Act allows NOLs incurred in 2018, 2019,
and  2020  to  be  carried  back  to  each  of  the  five  preceding  taxable  years  to  generate  a  refund  of  previously  paid  federal  income  taxes.  The  Company
generated significant NOLs during 2018 and 2019 and filed carryback claims for these losses to the preceding five years. Accordingly, as of March 31,
2020, the Company recorded a federal income tax receivable of $15.0 million and an increase to its deferred tax liability of $10.1 million on its condensed
balance sheet. During the third quarter of 2020, the Company received refunds corresponding to the 2018 NOL carryback, leaving a balance in the federal
income tax receivable of $11.5 million at December 31, 2020.

F - 21

 
 
 
 
 
 
The income tax effects of temporary differences that give rise to significant portions of deferred income tax assets and (liabilities) as of December

31, 2020 and 2019, are as follows (in thousands):

Deferred income tax assets:
Net operating loss
Research and development credits
Stock compensation
Deferred compensation
Other

Total deferred income tax assets

Deferred income tax liabilities:
Property and equipment
Goodwill and other intangible assets
Total deferred income tax liabilities

Net deferred income tax liabilities

2020

2019

$

$

3,361  $
1,363 
175 
705 
398 
6,002 

(47,626)
(266)
(47,892)
(41,890) $

1,519 
161 
580 
389 
160 
2,809 

(33,761)
(291)
(34,052)
(31,243)

As of December 31, 2020, the Company had NOL carryforwards for federal income tax purposes of $11.6 million, which may be carried forward
indefinitely and can offset up to 80% of future taxable income in any given year. Future changes in ownership, as defined by Section 382 of the Internal
Revenue Code, could limit the amount of NOL carryforwards used in any one year. In general, under Section 382 and 383 of the IRC, a corporation that
undergoes  an  “ownership  change”  is  subject  to  limitations  on  its  ability  to  utilize  its  pre-change  NOLs  and  certain  tax  credits,  to  offset  future  taxable
income  and  tax.  In  general,  an  ownership  change  occurs  if  the  aggregate  stock  ownership  of  certain  stockholders  changes  by  more  than  50  percentage
points over such stockholders’ lowest percentage of ownership during the testing period (generally three years).

We account for uncertain tax positions in accordance with guidance in FASB ASC 740, which prescribes the minimum recognition threshold a tax
position  taken  or  expected  to  be  taken  in  a  tax  return  is  required  to  meet  before  being  recognized  in  the  financial  statements.  The  Company  assessed
whether it had any uncertain tax positions related to open tax years and concluded there were none. Accordingly, no reserve for uncertain tax positions has
been recorded as of December 31, 2020 and 2019.

Our policy regarding income tax interest and penalties is to expense those items as incurred. During the years ended December 31, 2020 and

2019, there were no significant income tax interest or penalty items in the statement of income.

We file income tax returns in the U.S. federal jurisdiction and various state jurisdictions. With few exceptions, we are no longer subject to U.S.

federal or state income tax examination by tax authorities for years before 2015.

12. Deferred Compensation Plans

Effective  January  1,  2016,  the  Company  established  a  non-qualified  deferred  compensation  plan  for  executive  officers,  directors  and  certain
eligible  employees.  The  assets  of  the  deferred  compensation  plan  are  held  in  a  rabbi  trust  and  are  subject  to  additional  risk  of  loss  in  the  event  of
bankruptcy or insolvency of the Company. The plan allows for deferral up to 90% of a participant’s base salary, bonus, commissions, director fees and
restricted stock awards. A Company owned life insurance policy held in a rabbi trust is utilized as a source of funding for the plan. The cash surrender
value of the life insurance policy is $2.0 million and $1.5 million as of December 31, 2020 and 2019, respectively, with a gain related to the policy of
$168,000 and $218,800 reported in other income in our consolidated income statement for the year ended December 31, 2020 and 2019, respectively.

For deferrals of base salary, bonus, commissions and director fees, settlement payments are made to participants in cash, either in a lump sum or in
periodic installments. The deferred obligation to pay the deferred compensation and the deferred director fees is adjusted to reflect the positive or negative
performance of investment measurement options selected by each participant and was $2.2 million and $1.7 million as of December 31, 2020 and 2019,
respectively. The deferred obligation is included in other long-term liabilities in the consolidated balance sheet.

F - 22

 
 
 
 
 
For deferrals of restricted stock units, the plan does not allow for diversification, therefore, distributions are paid in shares of common stock and
the obligation is carried at grant value. As of December 31, 2020 and 2019, respectively, we have 45,998 and 85,565 unvested restricted stock units being
deferred. As of December 31, 2020 and 2019, respectively we have released and issued 145,702 and 89,187 shares to the deferred compensation plan with
a value of $2.2 million and $1.7 million, respectively.

13.  Stockholders' Equity

Preferred Stock

We  have  a  total  of  5.0  million  authorized  preferred  shares  with  rights  and  preferences  as  designated  by  the  Board  of  Directors.    As  of

December 31, 2020 and 2019, there were no issued or outstanding preferred shares.

14. Stock-Based and Other Long-Term Incentive Compensation

Restricted Stock/Units

 On June 18, 2014, at our annual meeting of shareholders, our shareholders approved a proposed amendment to the 2009 Restricted Stock/Unit
Plan (the "2009 Plan") to add additional 500,000 shares of common stock to the Plan, thereby authorizing the issuance of up to 800,000 shares of common
stock under the Plan. The 2009 Plan expired on June 16, 2019. At December 31, 2020 we had 34,899 shares outstanding under the 2009 Plan that will vest
over the next one year.

On  June  20,  2019,  at  our  annual  meeting  of  shareholders,  our  shareholders  approved  a  new  proposed  Equity  Incentive  Plan  for  restricted
shares/units  and  stock  options.  The  Equity  Incentive  Plan  allows  issuance  up  to  500,000  share  of  common  stock.  As  of  December  31,  2020,  we  had
223,202 shares outstanding under the Equity Incentive Plan that will vest over the next three years.

In  accordance  with  the  Company's  employment  agreement  with  Stephen  Taylor,  the  Company's  Chief  Executive  Officer,  the  Compensation
Committee reviewed his performance in determining the issuance of restricted common stock. Based on this review which included consideration of the
Company's 2019 performance, Mr. Taylor, was awarded 94,133 restricted shares/units on April 28, 2020, which vest over three years, in equal installments
beginning April 28, 2021. On April 28, 2020, the Compensation Committee awarded 10,000 restricted shares/units to James Hazlett, our Vice President of
Technical Services. The restricted shares/units to Mr. Hazlett vest over three years, in equal installments, beginning April 28, 2021. We also awarded and
issued  4,432  shares  of  restricted  common  stock/units  to  each  of  our  four  independent  Board  members  as  partial  payment  for  2020  directors'  fees.  The
restricted stock/units issued to our directors vests in one year from the date of grant.

Compensation expense related to the restricted shares/units was approximately $2.2 million and $2.5 million for the years ended December 31,
2020 and 2019, respectively. As of December 31, 2020, there was a total of approximately $1.8 million of unrecognized compensation expense related to
the  unvested  portion  of  these  restricted  shares/units.    This  expense  is  expected  to  be  recognized  over  the  next  three  years.  As  of  December  31,  2020,
200,141 shares were still available for issuance under the Equity Incentive Plan.

F - 23

A summary of all restricted stock/units activity as of December 31, 2019 and 2020 and changes during the years then ended are presented below.

Outstanding, December 31, 2018

Granted
Vested
Canceled/Forfeited

Outstanding, December 31, 2019

Granted
Vested
Canceled/Forfeited

Outstanding, December 31, 2020

Other Long-Term Incentive Compensation

Number
 of
Shares

Weighted Average
Exercise Price

Weighted
Average
Remaining
Contractual Life
(years)

Aggregate
Intrinsic
Value
(in thousands)

214,630  $
199,810 
(134,674)
— 
279,766  $
123,185 
(144,850)
— 
258,101  $

25.51 
17.16 
24.26 
— 
20.15 
5.68 
20.82 
— 
12.87 

8.85 $
— 
— 
— 
8.77 $
— 
— 
— 
8.61 $

3,529 
3,433 
2,807 
— 
3,430 
700 
946 
— 
2,447 

On April 28, 2020, based on its review of Mr. Taylor's 2019 performance, the Compensation Committee also issued a long-term incentive award
of $1.1 million to Mr. Taylor that vests in equal, annual tranches over three years. At the time of vesting, each tranche will be payable in cash or common
stock  at  the  discretion  of  the  Compensation  Committee.  In  addition,  on  April  28,  2020,  we  issued  a  $50,000  award  to  each  of  our  four  independent
members of our Board of Directors as partial payment for their services in 2020. These awards vest one year from the date of grant and are payable in cash
upon vesting. The Company accounts for these other long-term incentive awards to Mr. Taylor and our independent Board members as liabilities under
accrued liabilities on our condensed consolidated balance sheet. The vesting of these awards is subject to acceleration upon certain events, such as (i) death
or  disability  of  the  recipient,  (ii)  certain  circumstances  in  connection  with  a  change  of  control  of  the  Company,  (iii)  for  executive  officers,  termination
without cause (as defined in the agreement), and (iv) for executive officers, resignation for good reason (as defined). Total compensation expense related to
these other long-term incentive awards was approximately $0.4 million for the year ended December 31, 2020. As of December 31, 2020 there was a total
of $0.8 million of unrecognized compensation expense related to these other long-term incentive awards which is expected to be recognized over the next
2.25 years.

Stock Option Plan

Our  Stock  Option  Plan  which  is  stockholder  approved,  permits  the  granting  of  stock  options  to  its  employees  for  up  to  1.0  million  shares  of
common stock under the Stock Option Plan. We believe that such awards align the interests of our employees with our stockholders. Option awards are
generally granted with an exercise price equal to the market price of our stock at the date of grant; those option awards generally vest based on three years
of continuous service and have ten-year contractual terms.  Certain option and share awards provide for accelerated vesting if there is a change in control of
the  Company  (as  defined  in  the  Stock  Option  Plan).    The  last  date  that  grants  can  be  made  under  the  Stock  Option  Plan  is  February  28,  2026.  As  of
December 31, 2020, 384,503 shares were still available for issue under the Stock Option Plan.

The fair value of each option award is estimated on the date of grant using the Black-Scholes option valuation model that uses the assumptions
noted in the following table.  The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the
time of grant.  The expected life of options granted is based on the vesting period and historical exercise and post-vesting employment termination behavior
for similar grants.  We use historical data to estimate option exercise and employee termination within the valuation model; separate groups of employees
that have similar historical exercise behavior are considered separately for valuation purposes.

Weighted average Black -Scholes fair value assumption during the year ended December 31, are as follows:
Risk free rate
Expected life
Expected volatility
Expected dividend yield

2020

0.48 %
6.59
42.33 %
— %

F - 24

 
There were no stock option grants made in 2019.

A summary of all option activity as of December 31, 2019 and 2020 and changes during the years then ended are presented below:

Outstanding, December 31, 2018

Granted
Exercised
Canceled/Forfeited
Expired

Outstanding, December 31, 2019

Granted
Exercised
Canceled/Forfeited
Expired

Outstanding, December 31, 2020

Exercisable, December 31, 2020

Number
 of
Shares

Weighted
Average
Exercise Price

Weighted
Average
Remaining
Contractual Life
(years)

Aggregate
Intrinsic
Value
(in thousands)

283,686  $
— 
(56,352)
(8,000)
(11,000)
208,334  $
5,000 
— 
(12,000)
(40,000)
161,334  $

161,334  $

20.46 
— 
8.97 
21.60 
17.74 
23.67 
4.91 
— 
20.20 
19.11 
24.48 

24.48 

3.58 $
— 
— 
— 
— 
3.66 $
— 
— 
— 
— 
3.48 $

3.48 $

434 
— 
474 
— 
— 
— 
— 
— 
23,750 
— 
— 

— 

The weighted average grant date fair value of options granted during 2020 was $2.07. We had no grants in 2019. The total intrinsic value, or the
difference between the exercise price and the market price on the date of exercise, of options exercised during the years ended December 31, 2019 was
approximately $474,000. There were no option exercises in 2020. Cash received from stock options exercised during the years ended December 31, 2019
was approximately $506,000.

The following table summarizes information about our stock options outstanding at December 31, 2020:

Range of Exercise Prices
$0.01-18.00
$18.01-22.00
$22.01-26.00
$26.01-30.00
$30.01-34.00

Options Outstanding

Options Exercisable

Weighted
Average
Remaining
Contractual
Life (years)

Weighted
Average
Exercise
Price

0.41
2.22
4.28
6.13
3.22

3.48

$

$

16.80 
18.75 
22.90 
28.15 
30.41 

24.48 

Shares

24,500 
20,500 
42,167 
30,000 
44,167 
161,334 

Weighted
Average
Exercise
Price

16.80 
18.75 
22.90 
28.15 
30.41 

24.48 

Shares

24,500 
20,500 
42,167 
30,000 
44,167 
161,334 

$

$

The summary of the status of our unvested stock options as of December 31, 2020 and changes during the year then ended is presented below.

F - 25

 
 
 
Unvested stock options:
Unvested at December 31, 2019

Granted
Vested
Canceled/Forfeited

Unvested at December 31, 2020

Weighted
Average
Grant Date Fair
Value

Shares

10,433  $
5,000 
(10,433)
(5,000)

—  $

11.93 
2.07 
11.93 
2.07 

— 

We  recognized  stock  compensation  expense  from  stock  options  vesting  of  $19,366  and  $124,000  for  the  years  ended  December  31,  2020  and

2019, respectively. As of December 31, 2020, there was no unamortized compensation cost related to unvested stock options.

15. (Loss) Earnings per Share

Basic  (loss)  earnings  per  common  share  is  computed  using  the  weighted  average  number  of  common  shares  outstanding  during  the
period.  Diluted (loss) earnings per common share is computed using the weighted average number of common stock and common stock equivalent shares
outstanding during the period.  

The following table sets forth the computation of basic and diluted (loss) earnings per share (in thousands, except per share amounts):

Numerator:

Net (loss) income

Denominator for basic net (loss) income per common share:

Weighted average common shares outstanding

Denominator for diluted net (loss) income per share:

Weighted average common shares outstanding
Dilutive effect of stock options and restricted shares

Diluted weighted average shares
(Loss) earnings per common share:

Basic
Diluted

Year Ended December 31,

2020

2019

$

1,808  $

(13,864)

13,224 

13,114 

13,224 
37 
13,261 

$
$

0.14  $
0.14  $

13,114 
— 
13,114 

(1.06)
(1.06)

In the year ended ended December 31, 2020, 221,061 restricted stock/units and 161,334 stock options were not included in the computation of
dilutive income per share, due to their anti-dilutive effect. In the year ended ended December 31, 2019, 279,766 restricted stock/units and 208,334 stock
options were not included in the computation of diluted loss per share due to their antidilutive effect.

16. Related Party

In 2016, we entered into a joint venture partnership, N-G, LLC (‘N-G”), with Genis Holdings, LLC (“Genis”) to explore new technologies for
wellhead compression. NGS and Genis both share 50% ownership of N-G. We account for this investment under the equity method. In 2018, we ordered
some compressor packages from Genis, totaling $1.0 million. The compressors were completed and paid in full at December 31, 2019.

17. Commitments and Contingencies

F - 26

 
 
 
 
 
 
 
 
 
 
 
 
 
Legal Proceedings

From time to time, we are a party to various legal proceedings in the ordinary course of our business.  While management is unable to predict the
ultimate outcome of these actions, it believes that any ultimate liability arising from these actions will not have a material effect on our financial position,
results of operations or cash flow.  We are not currently a party to any bankruptcy, receivership, reorganization, adjustment or similar proceeding, and we
are not aware of any other threatened litigation.

18.  Subsequent Events

On March 31, 2021 our Amended Credit Agreement expired and we have decided not to renew the Amended Credit Agreement. On March 17,
2021 all outstanding indebtedness was repaid. We are in the process of negotiating a new credit facility which we expect to complete by the end of April
2021, although no guarantee can be made that we will be successful in finalizing and securing a new credit facility.

F - 27

Exhibit 21.1

Subsidiaries of the Registrant

Listed below are subsidiaries of Natural Gas Services Group, Inc. with their jurisdiction of organization shown in parenthesis:

NGSG Properties, LLC (Colorado)
Rabbi Trust associated with the Company's Non-qualified Deferred Compensation Plan (Texas)

                                                                          
Consent of Independent Registered Public Accounting Firm

Exhibit 23.1

Natural Gas Services Group, Inc.
Midland, Texas

We  hereby  consent  to  the  incorporation  by  reference  in  the  Registration  Statements  on  Form  S-8  (Nos.  333-212411,  333-196578,  333-
160068, 333-160063, 333-147311, and 333-110954) of Natural Gas Services Group, Inc. of our reports dated March 31, 2020, relating to the
consolidated financial statements and the effectiveness of Natural Gas Services Group, Inc.’s internal control over financial reporting, which
appear in this Annual Report on Form 10-K. Our report on the effectiveness of internal control over financial reporting expresses an adverse
opinion on the effectiveness of the Company’s internal control over financial reporting as of December 31, 2019.

/s/ BDO USA, LLP

Austin, Texas
March 31, 2021

Consent of Independent Registered Public Accounting Firm

Exhibit 23.2

Natural Gas Services Group, Inc.
Midland, Texas

We consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-212411, 333-196578, 333- 160068, 333-
160063, 333-147311, and 333-110954) of Natural Gas Services Group, Inc. of our report dated March 31, 2021, relating to the consolidated
financial  statements  of  Natural  Gas  Services  Group,  Inc.  which  report  expresses  an  unqualified  opinion,  appearing  in  this  Annual  Reort
(Form 10-K) for the year ended December 31, 2020.

/s/ Moss Adams LLP

Dallas, Texas
March 31, 2021

Exhibit 31.1

I, Stephen C. Taylor, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Natural Gas Services Group, Inc;

Certifications

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this
report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the

financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-
15(f) for the registrant and have:

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to
ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those
entities, particularly during the period in which this report is being prepared;

b. Designed  such  internal  control  over  financial  reporting,  or  caused  such  internal  control  over  financial  reporting  to  be  designed  under  our
supervision,  to  provide  reasonable  assurance  regarding  the  reliability  of  financial  reporting  and  the  preparation  of  financial  statements  for
external purposes in accordance with generally accepted accounting principles;

c. Evaluated  the  effectiveness  of  the  registrant's  disclosure  controls  and  procedures  and  presented  in  this  report  our  conclusions  about  the

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d. Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent
fiscal  quarter  (the  registrant's  fourth  fiscal  quarter  in  the  case  of  an  annual  report)  that  has  materially  affected,  or  is  reasonably  likely  to
materially affect, the registrant's internal control over financial reporting; and

1. The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to

the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. All  significant  deficiencies  and  material  weaknesses  in  the  design  or  operation  of  internal  control  over  financial  reporting  which  are

reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. Any  fraud,  whether  or  not  material,  that  involves  management  or  other  employees  who  have  a  significant  role  in  the  registrant's  internal

control over financial reporting.

Dated: March 31, 2021

Natural Gas Services Group, Inc.

By: /s/ Stephen C. Taylor
Stephen C. Taylor,
President, CEO and Chairman of the Board of Directors
(Principal Executive Officer)

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 31.2

I, G. Larry Lawrence, certify that:

1.    I have reviewed this Annual Report on Form 10-K of Natural Gas Services Group, Inc;

Certifications

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the
statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.       The  registrant's  other  certifying  officer(s)  and  I  are  responsible  for  establishing  and  maintaining  disclosure  controls  and  procedures  (as  defined  in
Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f) for
the registrant and have:

(a)    Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision,
to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;

(b)    Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our
supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes
in accordance with generally accepted accounting principles;

(c)        Evaluated  the  effectiveness  of  the  registrant's  disclosure  controls  and  procedures  and  presented  in  this  report  our  conclusions  about  the

effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)    Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent
fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect,
the registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the
registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)        All  significant  deficiencies  and  material  weaknesses  in  the  design  or  operation  of  internal  control  over  financial  reporting  which  are

reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)    Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal

control over financial reporting.

Dated: March 31, 2021

Natural Gas Services Group, Inc.

By: /s/ G. Larry Lawrence
G. Larry Lawrence
Vice President and Chief Financial Officer
(Principal Accounting Officer)

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. §1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Natural Gas Services Group, Inc. (the “Company”) on Form 10-K for the period ended December 31, 2020 as
filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Stephen C. Taylor, Chief Executive Officer of the Company,
certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.    The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2.    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: March 31, 2021

Natural Gas Services Group, Inc.

By: /s/ Stephen C. Taylor
Stephen C. Taylor,
President, CEO and Chairman of the Board of Directors
(Principal Executive Officer)

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section
18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or
after the date hereof, regardless of any general incorporation language in such filing.

 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. §1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Natural Gas Services Group, Inc. (the “Company”) on Form 10-K for the period ended December 31, 2020 as
filed  with  the  Securities  and  Exchange  Commission  on  the  date  hereof  (the  “Report”),  I,  G.  Larry  Lawrence,  Chief  Financial  Officer  of  the  Company,
certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.    The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

2.    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: March 31, 2021

Natural Gas Services Group, Inc.

By: /s/ G. Larry Lawrence
G. Larry Lawrence
Vice President and Chief Financial Officer
(Principal Accounting Officer)

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section
18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or
after the date hereof, regardless of any general incorporation language in such filing.