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FY2020 Annual Report · ACM Research
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

(Mark One)
☑ 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: 001-38273 0

ACM Research, Inc.

(Exact Name of Registrant as Specified in Its Charter)

Delaware
(State or Other Jurisdiction of Incorporation or Organization)

94-3290283
(I.R.S. Employer Identification No.)

42307 Osgood Road, Suite I, Fremont, California
(Address of Principal Executive Offices)

94539
(Zip Code)

Registrant’s telephone number, including area code: (510) 445-3700

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

Title of Each Class
Class A Common Stock, $0.0001 par value

Trading Symbol
ACMR

Name of Each Exchange on which Registered
NASDAQ Global Market

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 ☑

Securities registered pursuant to Section 12(g) of the Act: None.

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

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

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

Large accelerated filer  ☑
Non-accelerated filer    ☐

Accelerated filer
Smaller reporting company
Emerging growth company

☐
☐
☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial
accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate  by  check  mark  whether  the  registrant  has  filed  a  report  on  and  attestation  to  its  management’s  assessment  of  the  effectiveness  of  internal  control  over  financial
reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.  ☑

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

The aggregate market value on June 30, 2020 (the last business day of the registrant’s most recently completed second quarter) of the voting common equity held by non-
affiliates of the registrant, computed by reference to the $62.36 closing price of the stock on that date, was $735.7 million. The registrant does not have non-voting common
equity outstanding.

Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date.

Class
Class A Common Stock, $0.0001 par value
Class B Common Stock, $0.0001 par value

Number of Shares Outstanding
16,967,095 shares outstanding as of February 23, 2021
1,775,939 shares outstanding as of February 23, 2021

Documents Incorporated By Reference
The registrant intends to file a proxy statement pursuant to Regulation 14A within 120 days of the end of the fiscal year ended December 31, 2020. Portions of such proxy
statement are incorporated by reference in Part III of this report.

 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Item 1
Item 1A
Item 2
Item 3

Item 5
Item 7
Item 7A
Item 8
Item 9A

Item 10
Item 11
Item 12
Item 13
Item 14

Business
Risk Factors
Properties
Legal Proceedings

TABLE OF CONTENTS

PART I

PART II

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities
Management’s Discussion and Analysis of Financial Condition and Results of Operations
Quantitative and Qualitative Disclosures About Market Risk
Financial Statements and Supplementary Data
Controls and Procedures

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 Accountant Fees and Services

PART III

Item 15
Signatures

Exhibits and Financial Statement Schedules

PART IV

4
16
44
44

45
47
66
68
109

113
113
113
113
113

114
117

We conduct our business operations principally through ACM Research (Shanghai), Inc., or ACM Shanghai, a subsidiary of ACM Research, Inc., or ACM Research. Unless
the context requires otherwise, references in this report to “our company,” “our,” “us,” “we” and similar terms refer to ACM Research, Inc. and its subsidiaries, including
ACM Shanghai, collectively.

For purposes of this report, certain amounts in Renminbi, or RMB, have been translated into U.S. dollars solely for the convenience of the reader. The translations have been
made based on the conversion rates published by the State Administration of Foreign Exchange of the People’s Republic of China.

SAPS, TEBO, ULTRA C and ULTRA FURNACE are our trademarks. For convenience, these trademarks appear in this report without ™ symbols, but that practice does not
mean that we will not assert, to the fullest extent under applicable law, our rights to the trademarks. This report also contains other companies’ trademarks, registered marks
and trade names, which are the property of those companies.

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FORWARD-LOOKING STATEMENTS AND STATISTICAL DATA

This report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical
facts, included in this report regarding our strategy, future operations, future financial position, future revenue, projected costs, prospects, plans and objectives of management
are  forward-looking  statements.  In  some  cases,  you  can  identify  forward-looking  statements  by  terms  such  as  “may,”  “might,”  “will,”  “objective,”  “intend,”  “should,”
“could,” “can,” “would,” “expect,” “believe,” “anticipate,” “project,” “target,” “design,” “estimate,” “predict,” “potential,” “plan” or the negative of these terms, and similar
expressions  intended  to  identify  forward-looking  statements.  These  statements  reflect  our  current  views  with  respect  to  future  events  and  are  based  on  our  management’s
belief and assumptions and on information currently available to our management. Although we believe that the expectations reflected in these forward-looking statements are
reasonable, these statements relate to future events or our future operational or financial performance, and involve known and unknown risks, uncertainties and other factors,
including those described or incorporated by reference in “Item 1A. Risk Factors” of Part I of this report, that may cause our actual results, performance or achievements to be
materially different from any future results, performance or achievements expressed or implied by these forward-looking statements.

The information included under the heading “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Overview,” of Part II of this
report contains statistical data and estimates, including forecasts, that are based on information provided by Gartner, Inc., or Gartner, in “Forecast: Semiconductor Wafer Fab
Equipment, Worldwide, 4Q20 Update” (December 22, 2020), or the Gartner Report. The Gartner Report represents research opinions or viewpoints that are published, as part
of a syndicated subscription service, by Gartner and are not representations of fact. The Gartner Report speaks as of its original publication date (and not as of the date of this
report),  and  the  opinions  expressed  in  the  Gartner  Report  are  subject  to  change  without  notice.  While  we  are  not  aware  of  any  misstatements  regarding  any  of  the  data
presented from the Gartner Report, estimates, and in particular forecasts, involve numerous assumptions and are subject to risks and uncertainties, as well as change based on
various factors, that could cause results to differ materially from those expressed in the data presented below.

Any forward-looking statement made by us in this report speaks only as of the date on which it is made. Except as required by law, we assume no obligation to update these
statements publicly or to update the reasons actual results could differ materially from those anticipated in these statements, even if new information becomes available in the
future.

You should read this report, and the documents that we reference in this report and have filed as exhibits to this report, completely and with the understanding that our actual
future results may be materially different from what we expect. We qualify all of our forward-looking statements by these cautionary statements.

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PART I

Item 1.

Business

Overview

We supply advanced, innovative capital equipment developed for the global semiconductor industry. Fabricators of advanced integrated circuits, or chips, can use our wet-
cleaning and other front-end processing tools in numerous steps to improve product yield, even at increasingly advanced process nodes. We have designed these tools for use
in fabricating foundry, logic and memory chips, including dynamic random-access memory, or DRAM, and 3D NAND-flash memory chips. We also develop, manufacture
and sell a range of advanced packaging tools to wafer assembly and packaging customers.

Revenue from wet cleaning and other front-end processing tools totaled $136.3 million, or 87.0% of total revenue in 2020;  $90.9 million, or 84.6% of total revenue, in 2019;
and $68.5 million, or 91.7% of total revenue, in 2018. Selling prices for our wet-cleaning production tools range from $2 million to more than $5 million. Our customers for
wet-cleaning and other front-end processing tools have included Semiconductor Manufacturing International Corporation, Shanghai Huali Microelectronics Corporation, The
Huahong Group, SK Hynix Inc., Yangtze Memory Technologies Co., Ltd, and ChangXin Memory Technologies.

Revenue from advanced packaging,  other back-end processing tools, services and spares totaled $20.4 million, or 13.0% of total revenue in 2020, $16.6 million, or 15.4% of
total revenue in 2019, and $6.2 million or 8.3% of total revenue in 2018.  Selling prices for these tools range from $0.5 million to more than $2 million.  Our customers for
advanced packaging, and other back-end processing tools have included Jiangyin Changdian Advanced Packaging Co. Ltd., a leading PRC-based wafer bumping packaging
house  that  is  a  subsidiary  of  JCET  Group  Co.,  Ltd.;  Nantong  Tongfu  Microelectronics  Co.,  Ltd.,  a  PRC-based  chip  assembly  and  testing  company  that  is  a  subsidiary  of
Nantong  Fujitsu  Microelectronics  Co.,  Ltd.;  Nepes  Co.,  Ltd.,    a  semiconductor  packaging  company  based  in  South  Korea  which  acquired  the  operations  of  Deca
Technologies’ Philippines manufacturing facility in 2020;  and Wafer Works Corporation, a leading PRC-based wafer supplier.

We  estimate,  based  on  third-party  reports  and  on  customer  and  other  information,  that  our  current  product  portfolio  addresses  more  than  $5  billion  of  the  global  wafer
equipment market.  By product line, we estimate an approximately $2.5 billion market opportunity is addressed by our wafer cleaning equipment, $1.7 billion by our furnace
equipment, $500 million by our electro-chemical plating, or ECP equipment, and more than $300 million by our stress-free polishing, or SFP, advanced packaging, wafer
processing, and other back-end processing equipment. By major equipment segment, Gartner estimates a 2020 global market size of $3.5 billion for wafer cleaning equipment
(auto wet stations, single-wafer processors, batch spray processors, and other clean process equipment), $2.4 billion for furnace equipment (tube CVD, oxidation/diffusion
furnace, and batch atomic layer deposition), and $546 million for ECD (electro-chemical deposition).  Based on Gartner’s estimates, the total available global market for these
equipment segments increased by 15% from $5.6 billion in 2019 to $6.4 billion in 2020, and is expected to increase by 6% to $6.8 billion in 2021.

We have focused our selling efforts on establishing a referenceable base of leading foundry, logic and memory chip makers, whose use of our products can influence decisions
by other manufacturers. We believe this customer base has helped us penetrate the mature chip manufacturing markets and build credibility with additional industry leaders.
We have used a “demo-to-sales” process to place evaluation equipment, or “first tools,” with a number of selected customers.

Since  2009  we  have  delivered  more  than  135  wet  cleaning  and  other  front-end  processing  tools,  more  than  120  of  which  have  been  accepted  by  customers  and  thereby
generated revenue to us. The balance of the delivered tools are awaiting customer acceptance should contractual conditions be met. To date, a substantial majority of our sales
of single-wafer wet cleaning equipment for front-end manufacturing have been to customers located in Asia, and we anticipate that a substantial majority of our revenue from
these products will continue to come from customers located in this region for the foreseeable future. We have begun to add to our efforts to further address customers in
North America, Western Europe and Southeast Asia by expanding our direct sales and services teams and increasing our global marketing activities.

We  are focused on building a strategic portfolio of intellectual property to support and protect our key innovations. Our tools have been developed using our key proprietary
technologies:
●

Space Alternated Phase Shift, or SAPS, technology for flat and patterned (deep via or deep trench with stronger structure) wafer surfaces. SAPS technology employs
alternating phases of megasonic waves to deliver megasonic energy in a highly uniform manner on a microscopic level. We have shown SAPS technology to be more
effective than conventional megasonic and jet spray technologies in removing random defects across an entire wafer, with increasing relative effectiveness at more
advanced production nodes.

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●

●

●

Timely Energized Bubble Oscillation, or TEBO, technology for patterned wafer surfaces at advanced process nodes. TEBO technology has been developed to provide
effective,  damage-free  cleaning  for  2D  and  3D  patterned  wafers  with  fine  feature  sizes.  We  have  demonstrated  the  damage-free  cleaning  capabilities  of  TEBO
technology  on  patterned  wafers  for  feature  nodes  as  small  as  1xnm  (16  to  19  nanometers,  or  nm),  and  we  have  shown  TEBO  technology  can  be  applied  in
manufacturing processes for patterned chips with 3D architectures having aspect ratios as high as 60‑to‑1.
Tahoe  technology  for  cost  and  environmental  savings.  Tahoe  technology  delivers  high  cleaning  performance  using  significantly  less  sulfuric  acid  and  hydrogen
peroxide than is typically consumed by conventional high-temperature single-wafer cleaning tools.
ECP technology for advanced metal plating. Our Ultra ECP ap, or Advanced Packaging, technology was developed for back-end assembly processes to deliver a more
uniform metal layer at the notch area of wafers prior to packaging. Our Ultra ECP map, or Multi-Anode Partial Plating, technology was developed for front-end wafer
fabrication processes to deliver advanced electrochemical copper plating for copper interconnect applications. Ultra ECP map offers improved gap-filling performance
for ultra-thin seed layer applications, which is critical for advanced nodes at 14nm and beyond.

In 2020 we introduced and delivered a range of new tools intended to broaden our revenue opportunity with global semiconductor manufacturers.  Product extensions include
the Ultra SFP ap tool for advanced packaging solutions, the Ultra C VI  18-chamber single wafer cleaning tool for advanced memory devices, and the Ultra ECP 3d platform
for through-silicon-via, or tsv,  application. New product lines include the Ultra fn Furnace, our first dry processing tool, and a suite of semi-critical cleaning systems which
include single wafer back side cleaning, scrubber, and auto bench cleaning tools.

We have been issued more than 350 patents in the United States, the People’s Republic of China or PRC, Japan, Singapore, South Korea and Taiwan.

We  conduct  a  substantial  majority  of  our  product  development,  manufacturing,  support  and  services  in  the  PRC,  with  additional  product  development  and  subsystem
production in South Korea.  Substantially all of our integrated tools are built to order at our manufacturing facilities in the Pudong region of Shanghai, which facilities now
encompass  a  total  of  136,000  square  feet  of  floor  space  for  production  capacity,  with  50,000  square  feet  having  been  added  in  2020  through  an  expansion  of  our  second
facility in the Pudong region of Shanghai. In May 2020 ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc., entered into an agreement
for a land use right in the Lingang region of Shanghai. In July 2020 Shengwei Research (Shanghai), Inc. began a multi-year construction project for a new 1,000,000 square
foot  development  and  production  center  that  will  incorporate  state-of-the-art  manufacturing  systems  and  automation  technologies,  and  will  provide  floor  space  to  support
significantly increase production capacity and related research and development activities. Our experience has shown that chip manufacturers in the PRC and throughout Asia
demand equipment meeting their specific technical requirements and prefer building relationships with local suppliers. We will continue to seek to leverage our local presence
in the PRC to address the growing market for semiconductor manufacturing equipment in the region by working closely with regional chip manufacturers to understand their
specific requirements, encourage them to adopt our technologies, and enable us to design innovative products and solutions to address their needs.

In June 2019 we announced a strategic plan to list shares of ACM Shanghai on the Shanghai Stock Exchange’s Sci-Tech InnovAtion BoaRd, as described under “Item 7.
Management’s Discussion and Analysis of Financial Condition and Results of Operations—Recent Developments—STAR Market Listing and IPO.”

Our Technology and Product Offerings

Wet Cleaning Equipment for Front End Production Processes

Chip fabricators can use our single-wafer wet-cleaning tools in numerous steps to improve product yield in the front-end production process, during which individual devices
are patterned in a chip prior to being interconnected on a wafer. Our wet-cleaning equipment has been developed using our proprietary SAPS, TEBO and Tahoe technologies,
which allow our tools to remove random defects from a wafer surface effectively, without damaging a wafer or its features, even at increasingly advanced process nodes (the
minimum  line  widths  on  a  chip)  of  22nm  or  less.  We  use  a  modular  configuration  that  enables  us  to  create  a  wet-cleaning  tool  meeting  the  specific  requirements  of  a
customer, while using pre-existing designs for chamber, electrical, chemical delivery and other modules. Our modular approach supports a wide range of customer needs and
facilitates  the  adaptation  of  our  model  tools  for  use  with  the  optimal  chemicals  selected  to  meet  a  customer’s  requirements.  Our  tools  are  offered  principally  for  use  in
manufacturing  chips  from  300  millimeter,  or  mm,  silicon  wafers,  but  we  also  offer  solutions  for  150mm  and  200mm  wafers  and  for  nonstandard  substrates,  including
compound semiconductor, quartz, sapphire, glass and plastics.

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SAPS Technology, Applications and Equipment

SAPS Technology

SAPS  technology  delivers  megasonic  energy  uniformly  to  every  point  on  an  entire  wafer  by  alternating  phases  of  megasonic  waves  in  the  gap  between  a  megasonic
transducer  and  the  wafer.  Radicals  for  removing  random  defects  are  generated  in  dilute  solution,  and  the  radical  generation  is  promoted  by  megasonic  energy.  Unlike
“stationary”  megasonic  transducers  used  in  conventional  megasonic  cleaning  methods,  SAPS  technology  moves  or  tilts  a  transducer  while  a  wafer  rotates,  enabling
megasonic energy to be delivered uniformly across all points on the wafer, even if the wafer is warped. The mechanical force of cavitations generated by megasonic energy
enhances the mass transfer rate of dislodged random defects and improves particle removal efficiency.

By  delivering  megasonic  energy  in  a  highly  uniform  manner  on  a  microscopic  level,  SAPS  technology  can  precisely  control  the  intensity  of  megasonic  energy  and  can
effectively remove random defects of all sizes across the entire wafer in less total cleaning time than conventional megasonic cleaning products, without loss of material or
roughing of wafer surfaces. We have conducted trials demonstrating SAPS technology to be more effective than conventional megasonic and jet spray cleaning technologies
as defect sizes shrink from 300nm to 20nm and below. These trials show that SAPS technology has an even greater relative advantage over conventional jet spray technology
for cleaning defects between 50 and 65nm in size, and we expect the relative benefits of SAPS will continue to apply in cleaning even smaller defect sizes.

SAPS Applications

SAPS megasonic cleaning technology can be applied during the chip fabrication process to clean wafer surfaces and interconnects. It also can be used to clean, and lengthen
the lifetime, of recycled test wafers.

Wafer Surfaces. SAPS technology can enhance removal of random defects following planarization and deposition, which are among the most important, and most repeated,
steps in the fabrication process:
●

Post CMP:  Chemical  mechanical  planarization,  or  CMP,  uses  an  abrasive  chemical  slurry  following  other  fabrication  processes,  such  as  deposition  and  etching,  in
order  to  achieve  a  smooth  wafer  surface  in  preparation  for  subsequent  processing  steps.  SAPS  technology  can  be  applied  following  each  CMP  process  to  remove
residual random defects deposited or formed during CMP.
Post Hard Mask Deposition: As part of the photolithographical patterning process, a mask is applied with each deposition of a material layer to prevent etching of
material intended to be retained. Hard masks have been developed to etch high aspect-ratio features of advanced chips that traditional masks cannot tolerate. SAPS
technology can be applied following each deposition step involving hard masks that use nitride, oxide or carbon based materials to achieve higher etch selectivity and
resolution.

●

For these purposes, SAPS technology uses environmentally friendly dilute chemicals, reducing chemical consumption. Chemical types include dilute solutions of chemicals
used in RCA cleaning, such as dilute hydrofluoric acid and RCA SC-1 solutions, and, for higher quality wafer cleaning, functional de-ionized water produced by dissolving
hydrogen, nitrogen or carbon dioxide in water containing a small amount of chemicals, such as ammonia. Functional water removes random defects by generating radicals,
and megasonic excitation can be used in conjunction with functional water to further increase the generation of radicals. Functional water has a lower cost and environmental
impact than RCA solutions, and using functional water is more efficient in eliminating random defects than using dilute chemicals or de-ionized water alone. We have shown
that SAPS megasonic technology using functional water exhibits high efficiency in removing random defects, especially particles smaller than 65nm, with minimal damage to
structures.

Interconnects and Barrier Metals. Each successive advanced process node has led to finer feature sizes of interconnects such as contacts, which form electrical pathways
between a transistor and the first metal layer, and vias, which form electrical pathways between two metal layers. Advanced nodes have also resulted in higher aspect ratios
for interconnect structures, with thinner, redesigned metal barriers being used to prevent diffusion. SAPS technology can improve the removal of residues and other random
defects from interconnects during the chip fabrication process:
●

Post Contact/Via Etch: Wet etching processes are commonly used to create patterns of high-density contacts and vias. SAPS technology can be applied after each such
etching process to remove random defects that could otherwise lead to electrical shorts.
Pre Barrier Metal Deposition: Copper wiring requires metal diffusion barriers at the top of via holes to prevent electrical leakage. SAPS technology can be applied
prior to deposition of barrier metal to remove residual oxidized copper, which otherwise would adhere poorly to the barrier and impair performance.

●

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For these applications, SAPS technology uses environmentally friendly dilute chemicals such as dilute hydrofluoric acid, RCA SC-1 solution, ozonated de-ionized water and
functional de-ionized water with dissolved hydrogen. These chemical solutions take the place of piranha solution, a high-temperature mixture of sulfuric acid and hydrogen
peroxide used by conventional wet wafer cleaning processes. We have shown that SAPS technology exhibits greater efficiency in removing random defects, and lower levels
of material loss, than conventional processes, and our chemical solutions are less expensive and more environmentally conscious than piranha solution.

Recycled  Test  Wafers.  In  addition  to  using  silicon  wafers  for  chip  production,  chip  manufacturers  routinely  process  wafers  through  a  limited  portion  of  the  front-end
fabrication steps in order to evaluate the health, performance and reliability of those steps. Manufacturers also use wafers for non-product purposes such as inline monitoring.
Wafers used for purposes other than manufacturing revenue products are known as test wafers, and it is typical for twenty to thirty percent of the wafers circulating in a fab to
be test wafers. In light of the significant cost of wafers, manufacturers seek to re-use a test wafer for more than one test. As test wafers are recycled, surface roughness and
other defects progressively impair the ability of a wafer to complete tests accurately. SAPS technology can be applied to reduce random defect levels of a recycled wafer,
enabling the test wafer to be reclaimed for use in additional testing processes. For these purposes, SAPS technology includes improved fan filter units that balances intake and
exhaust flows, precise temperature and concentration controls that ensure better handling of concentrated acid processes, and two-chemical recycle capability that reduces
chemical consumption.

SAPS Equipment

We offer two principal models of wet wafer cleaning equipment based on our SAPS technology, Ultra C SAPS II and Ultra C SAPS V. Each of these models is a single-wafer,
serial-processing tool that can be configured to customer specifications and, in conjunction with appropriate dilute chemicals, used to remove random defects from wafer
surfaces or interconnects and barrier metals as part of the chip front-end fabrication process or for recycling test wafers. By combining our megasonic and chemical cleaning
technologies, we have designed these tools to remove random defects with greater efficacy and efficiency than conventional wafer cleaning processes, with enhanced process
flexibility and reduced quantities of chemicals. Each of our SAPS models was initially built to meet specific requirements of a key customer.

SAPS II (released in 2011). Highlights of our SAPS II equipment include:

●    compact design, with footprint of 2.65m x 4.10m x 2.85m (WxDxH), requiring limited clean room floor space;

●     up to 8 chambers, providing throughput of up to 225 wafers per hour;

●     double-sided cleaning capability, with up to 5 cleaning chemicals for process flexibility;

●     2-chemical recycling capability for reduced chemical consumption;

●     image wafer detection method for lowering wafer breakage rates; and

●    chemical delivery module for delivery of dilute hydrofluoric acid, RCA SC-1 solution, functional de-ionized water and

carbon dioxide to each of the chambers.

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SAPS V (released in 2014).  SAPS V includes SAPS II features with the following upgrades:

●     compact design, with footprint of 2.55m x 5.1m x 2.85m (WxDxH), requiring limited clean room floor space;

●     up to 12 chambers, providing throughput of up to 375 wafers per hour;

●     chemical supply system integrated into mainframe;

●     inline mixing method replaces tank auto-changing, reducing process time; and

●     improved drying technology using hot isopropyl alcohol and de-ionized water.

TEBO Technology, Applications and Equipment

TEBO Technology

We  developed  TEBO  technology  for  application  in  wet  wafer  cleaning  during  the  fabrication  of  2D  and  3D  wafers  with  fine  feature  sizes.  TEBO  technology  facilitates
effective cleaning even with patterned features too small or fragile to be addressed by conventional jet spray and megasonic cleaning technologies.

TEBO technology solves the problems created by transient cavitation in conventional megasonic cleaning processes. Cavitation is the formation of bubbles in a liquid, and
transient cavitation is a process in which a bubble in fluid implodes or collapses. In conventional megasonic cleaning processes, megasonic energy forms bubbles and then
causes those bubbles to implode or collapse, blasting destructive high-pressure, high-temperature micro jets toward the wafer surface. Our internal testing has confirmed that
at  any  level  of  megasonic  energy  capable  of  removing  random  defects,  the  sonic  energy  and  mechanical  force  generated  by  transient  cavitation  are  sufficiently  strong  to
damage fragile patterned structures with features less than 70nm.

TEBO technology provides multi-parameter control of cavitation by using a sequence of rapid changes in pressure to force a bubble in liquid to oscillate at controlled sizes,
shapes and temperatures, rather than implode or collapse. As a result, cavitation remains stable during TEBO megasonic cleaning processes, and a chip fabricator can, using
TEBO technology, apply the level of megasonic energy needed to remove random defects without incurring the pattern damage created by transient cavitation in conventional
megasonic cleaning.

We have demonstrated the damage-free or low-damage cleaning capabilities of TEBO technology on customers’ patterned wafers as small as 1xnm (16nm to 19nm), and we
believe TEBO technology will be applicable in even smaller fabrication process nodes. TEBO technology can be applied in manufacturing processes for conventional 2D
chips with fine features and advanced chips with 3D structures, including Fin Field Effect Transistors or FinFET, DRAM, 3D NAND and 3D cross point memory, and we
expect it will be applicable to other 3D architectures developed in the future, such as carbon nanotubes and quantum devices. As a result of the thorough, controlled nature of
TEBO processes, cleaning time for TEBO-based solutions may take longer than conventional megasonic cleaning processes. Conventional processes have proven ineffective,
however, for process nodes of 20nm or less, and we believe the increased yield that can be achieved by using TEBO technology for nodes up to 70nm can more than offset the
cost of the additional time in utilizing TEBO technology.

TEBO Applications

At process nodes of 28nm and less, chip makers face escalating challenges in eliminating nanometric particles and maintaining the condition of inside pattern surfaces. In
order  to  maintain  chip  quality  and  avoid  yield  loss,  cleaning  technologies  must  control  random  defects  of  diminishing  killer  defect  sizes,  without  roughing  or  otherwise
damaging surfaces of transistors, interconnects or other wafer features. TEBO technology can be applied in numerous steps throughout the manufacturing process flow for
effective, damage-free cleaning:

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●

Memory Chips: We estimate that TEBO technology can be applied in as many as 50 steps in the fabrication of a DRAM chip, consisting of up to 10 steps in cleaning
ISO structures, 20 steps in cleaning buried gates, and 20 steps in cleaning high aspect-ratio storage nodes and stacked films.

Logic Chips: In the fabrication process for a logic chip with a FinFET structure, we estimate that TEBO technology can be used in 15 or more cleaning steps.

●
For purposes of solving inside pattern surface conditions for memory or logic chips, TEBO technology uses environmentally friendly dilute chemicals such as RCA SC-1 and
hydrogen gas doped functional water.

TEBO Equipment

We offer two models of wet wafer cleaning equipment based on our TEBO technology, Ultra C TEBO II and Ultra C TEBO V. Each of these models is a single-wafer, serial-
processing tool that can be configured to customer specifications and, in conjunction with appropriate dilute chemicals, used at numerous manufacturing processing steps for
effective,  damage-free  cleaning  of  chips  at  process  nodes  of  28nm  or  less.  TEBO  equipment  solves  the  problem  of  pattern  damage  caused  by  transient  cavitation  in
conventional  jet  spray  and  megasonic  cleaning  processes,  providing  better  particle  removal  efficiency  with  limited  material  loss  or  roughing.  TEBO  equipment  is  being
evaluated by a select group of leading memory and logic chip customers.

Each model of TEBO equipment includes:

●      an equipment front-end module, or EFEM, which moves wafers from chamber to chamber;

●      one or more chamber modules, each equipped with a TEBO megasonic generator system;

●      an electrical module to provide power for the tool; and

●      a chemical delivery module.

Ultra C TEBO II (released in 2016). Highlights of our Ultra C TEBO II equipment include:

●     compact design, with footprint of 2.25m x 2.25m x 2.85m (WxDxH);

●   up to 8 chambers with an upgraded transport system and optimized robotic scheduler, providing throughput of up to

300 wafers per hour;

●     EFEM module consisting of 4 load ports, transfer robot and 1 process robot; and

●     focus on dilute chemicals contributes to environmental sustainability and lower cost of ownership.

Ultra C TEBO V (released in 2016). Highlights of our Ultra C TEBO V equipment include:

●     footprint of 2.45m x 5.30m x 2.85m (WxDxH);

●     up to 12 chamber modules, providing throughput of up to 300 wafers per hour;

●     EFEM module consisting of 4 load ports, 1 transfer robot and 1 process robot; and

●    chemical delivery module for delivery of isopropyl alcohol, dilute hydrofluoric acid, RCA SC-1 solution, functional

de-ionized water and carbon dioxide to each of the chambers.

Tahoe Overview

Our  Ultra-C  Tahoe  wafer  cleaning  tool  can  deliver  high  cleaning  performance  using  significantly  less  sulfuric  acid  and  hydrogen  peroxide  than  is  typically  consumed  by
conventional high-temperature single-wafer cleaning tools. During normal single-wafer cleaning processes, only a fraction of the acid reacts with the wafer surface, while the
majority is wasted as acid spins off the wafer and cannot be recycled. Tahoe employs a proprietary hybrid approach in which the sulfuric acid cleaning steps are processed in
batch  mode,  and  the  final  stage  cleaning  are  processed  with  single-wafer  cleaning  technologies.    In  addition  to  providing  cost  savings  resulting  from  vastly  reduced  acid
consumption, Ultra-C Tahoe meets the needs of customers who face increased environmental regulations and demand new, more environmentally friendly tools. We delivered
our first Ultra C Tahoe tool to a strategic customer in 2019.

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Advanced Packaging and other Back-End Processing Tools

We leverage our technology and expertise to provide a range of single-wafer tools for back-end wafer assembly and packaging factories. We develop, manufacture and sell a
wide range of advanced packaging tools, such as coaters, developers, photoresist strippers, scrubbers, wet etchers and copper-plating tools. We focus on providing custom-
made, differentiated equipment that incorporates customer-requested features at a competitive price.

For example, our Ultra C Coater is used in applying photoresist, a light-sensitive material used in photolithography to transfer
a pattern from a mask onto a wafer. Coaters typically provide input and output elevators, shuttle systems and other devices to
handle and transport wafers during the coating process. Unlike most coaters, the Ultra C Coater is fully automated. Based on
requests from customers, we developed and incorporated the special function of chamber auto-clean module into the Ultra C
Coater, which further differentiates it from other products in the market. The Ultra C Coater is designed to deliver improved
throughput and more efficient tool utilization while eliminating particle generation.

Our other advanced packaging tools include: Ultra C Developer, which applies liquid developer to selected parts of photoresist to resolve an image; Ultra C PR Megasonic-
Assisted Stripper, which removes photoresist; Ultra C Scrubber, which scrubs and cleans wafers; Ultra C Thin Wafer Scrubber, which addresses a sub-market of cleaning very
thin wafers for certain Asian assembly factories; and Ultra C Wet Etcher, which etches silicon wafers and copper and titanium interconnects.

Our Customers

Since  2009  we  have  delivered  more  than  135  wet  cleaning  and  other  front-end  processing  tools,  more  than  120  of  which  have  been  accepted  by  customers  and  thereby
generated revenue to us. The balance of the delivered tools are awaiting customer acceptance should contractual conditions be met. To date, substantially all of our sales of
single-wafer wet cleaning equipment for front-end manufacturing have been to customers located in Asia, and we anticipate that a substantial majority of our revenue from
these products will continue to come from customers located in this region for the foreseeable future. We have begun to add to our efforts to further address customers in
North America, Western Europe and Southeast Asia, by expanding our direct sales teams and increasing our global marketing activities.

We  generate  most  of  our  revenue  from  a  limited  number  of  customers  as  the  result  of  our  strategy  of  initially  placing  equipment  with  a  small  number  of  leading  chip
manufacturers  that  are  driving  technology  trends  and  key  capability  implementation.  In  2020,  75.8%  of  our  revenue  was  derived  from  three  customers:  Shanghai  Huali
Microelectronics  Corporation  together  with  Huahong  Semiconductor  Ltd.,  collectively  known  as  The  Shanghai  Huahong  (Group)  Company,  Ltd.  (“The  Huali  Huahong
Group”), a leading PRC foundry, accounted for 36.9% of our revenue; Yangtze Memory Technologies Co., Ltd., a leading PRC memory chip company, together with one of
its  subsidiaries,  accounted  for  26.8%  of  our  revenue;  and  Semiconductor  Manufacturing  International  Corporation,  a  leading  PRC  foundry,  accounted  for  12.1%  of  our
revenue.  In 2019 73.8% of our revenue was derived from three customers: Yangtze Memory Technologies Co., Ltd.,  together with its subsidiaries accounted for 27.5% of
our  revenue;  The  Huali  Huahong  Group  accounted  for  26.5%  of  our  revenue;  and  SK  Hynix  Inc.,  a  leading  Korean  memory  chip  company,  accounted  for  19.8%  of  our
revenue. In 2018, 87.6% of our revenue was derived from three customers: Yangtze Memory Technologies Co., Ltd. (together with a subsidiary) accounted for 39.6% of our
revenue; Shanghai Huali Microelectronics Corporation accounted for 24.2% of our revenue; and SK Hynix Inc. accounted for 23.8% of our revenue.

Based on our market experience, we believe that implementation of our equipment by one of our selected chip manufacturers will attract and encourage other manufacturers
to evaluate our equipment, because the leading company’s implementation will serve as validation of our equipment and could enable the other manufacturers to shorten their
evaluation processes. As an example, we placed our first SAPS tool in 2009 as a prototype. We worked closely with the customer for two years in debugging and modifying
the tool, and the customer then spent two more years of qualification and running pilot production before beginning volume manufacturing. Our revenue in 2015 included
sales of SAPS tools following the customer’s completion of its qualification process. The period from new product introduction to high volume manufacturing can range from
one to several years.

For our back-end wafer assembly and packaging customers, we focus on providing custom-made, differentiated equipment that incorporates a customer’s requested features at
a competitive cost of ownership. Our customers for advanced packaging, wafer processing, and other back-end processing tools have included Jiangyin Changdian Advanced
Packaging Co. Ltd., a leading PRC-based wafer bumping packaging house that is a subsidiary of JCET Group Co., Ltd.; Nantong Tongfu Microelectronics Co., Ltd., a PRC-
based chip assembly and testing company that is a subsidiary of Nantong Fujitsu Microelectronics Co., Ltd.; Nepes Co., Ltd.,  a semiconductor packaging company based in
South Korea which acquired the operations of Deca Technologies’ Philippines manufacturing facility in 2020;  and Wafer Works Corporation, a leading PRC-based wafer
supplier.

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Sales and Marketing

We market and sell our products worldwide using a combination of our direct sales force and third-party representatives. We employ direct sales teams in Asia, Europe and
North America, and have located these teams near our customers, primarily in the PRC, South Korea, Taiwan and the United States. Each sales person has specific local
market expertise. We also employ field application engineers, who are typically co-located with our direct sales teams, to provide technical pre- and post-sale support tours
and  other  assistance  to  existing  and  potential  customers  throughout  the  customers’  fab  planning  and  production  line  qualification  and  fab  expansion  phases.  Our  field
application engineers are organized by end markets as well as core competencies in hardware, control system, software and process development to support our customers.

To supplement our direct sales teams, we have contacts with several independent sales representatives in the PRC, South Korea and Taiwan. We select these independent
representatives based on their ability to provide effective field sales, marketing forecast and technical requirement updates for our products. In the case of representatives, our
customers place purchase orders with us directly rather than with the representatives.

Our  sales  have  historically  been  made  using  purchase  orders  with  agreed  technical  specifications.  Our  sales  terms  and  conditions  are  generally  consistent  with  industry
practice, but may vary from customer to customer. We seek to obtain a purchase order two to four months ahead of the customer’s desired delivery date. For some customers,
we receive a letter of intent a few weeks ahead, followed by the corresponding purchase order four months ahead of the customer’s desired delivery date. Consistent with
industry practice, we allow customers to reschedule or cancel orders at a certain cost to them on relatively short notice. Because of our relatively short delivery period and our
practice of permitting rescheduling or cancellation, we believe that backlog is not a reliable indicator of our future revenue.

Our marketing team focuses on our product strategy and technology road maps, product marketing, new product introduction processes, demand assessment and competitive
analysis, customer requirement communication and public relations. Our marketing team also has the responsibility to conduct environmental scans, study industry trends and
arrange our participation at major trade shows.

Manufacturing

We  conduct  a  substantial  majority  of  our  product  development,  manufacturing,  support  and  services  in  the  PRC,  with  additional  product  development  and  subsystem
production in South Korea. Substantially all of our tools are built to order at our manufacturing facilities in the Pudong region of Shanghai, which now encompass a total of
136,000 square feet of floor space for production capacity, with 50,000 square feet having been added in the second quarter of 2020 through an expansion of our second
facility in the Pudong region of Shanghai.

In May 2020 ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc., entered into an agreement for a land use right in the Lingang region
of Shanghai. In July 2020 Shengwei Research (Shanghai), Inc. began a multi-year construction project for a new development and production center. The planned 1,000,000
square  foot  facility  will  incorporate  state-of-the-art  manufacturing  systems  and  automation  technologies,  and  will  provide  the  floor  space  to  support  significantly  more
production capacity and related research and development activities when fully-staffed and supplied.  See “Item 2. Properties,” of Part I of this report.

Our  experience  has  shown  that  chip  manufacturers  in  the  PRC  and  throughout  Asia  demand  equipment  meeting  their  specific  technical  requirements  and  prefer  building
relationships with local suppliers. We will continue to seek to leverage our local presence to address the growing market for semiconductor manufacturing equipment in the
region  by  working  closely  with  regional  chip  manufacturers  to  understand  their  specific  requirements,  encourage  them  to  adopt  our  SAPS,  TEBO,  Tahoe  and  ECP
technologies, and enable us to design innovative products and solutions to address their needs.

In  February  2020  our  ACM  Shanghai  headquarters  were  closed  for  an  additional  six  days  beyond  the  normal  Lunar  New  Year  Holiday  in  accordance  with  Shanghai
government restrictions related to the COVID-19 outbreak. We took steps before and after the 2020 Lunar New Year to ensure no employees took unreasonable risks to rush
back  to  work.  Currently  substantially  all  of  our  staff  have  returned  to  work  at  both  of  our  Shanghai  facilities.  For  additional  information,  see  “Item  7.  Management’s
Discussion and Analysis of Financial Condition and Results of Operations—Recent Developments—COVID-19 Outbreak,” of Part II of this report.

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We purchase some of the components and assemblies that we include in our products from single source suppliers. We believe that we could obtain and qualify alternative
sources  to  supply  these  components.  Nevertheless,  any  prolonged  inability  to  obtain  these  components  could  have  an  adverse  effect  on  our  operating  results  and  could
unfavorably impact our customer relationships. Please see “Item 1A. Risk Factors—Risks Related to Our Business and Our Industry—We depend on a limited number of
suppliers, including single source suppliers, for critical components and assemblies, and our business could be disrupted if they are unable to meet our needs.”

Research and Development

We believe that our success depends in part on our ability to develop and deliver breakthrough technologies and capabilities to meet our customers’ ever-more challenging
technical  requirements.  For  this  reason,  we  devote  significant  financial  and  personnel  resources  to  research  and  development.  Our  research  and  development  team  is
comprised of highly skilled engineers and technologists with extensive experience in megasonic technology, cleaning processes and chemistry, mechanical design, and control
system  design.  To  supplement  our  internal  expertise,  we  have  or  are  currently  collaborating  with  external  research  and  development  entities  such  as  International
SEMATECH, Shanghai Integrated Circuits Research & Development Center (ICRD), and IMEC on specific areas of interests. We also retain, as technical advisors, several
experts in semiconductor technology.

For  the  foreseeable  future  we  are  focusing  on  enhancing  our  Ultra  C  SAPS,  TEBO,  Tahoe  and  ECP  tools  and  integrating  additional  capabilities  to  meet  and  anticipate
requirements from our existing and potential customers. Our particular areas of focus include development of the following:
●
●
●
●

new cleaning steps for Ultra C SAPS cleaners for application in logic chips and for DRAM, 3D NAND and 3D cross point memory technologies;
new cleaning steps for Ultra C TEBO cleaners for FinFET in logic chips, gates in DRAM, and deep vias in both 3D NAND and 3D cross point memory technologies;
new hardware, including new system platforms, new and additional chamber structures and new chemical blending systems; and
new software to integrate new functionalities to improve tool performance.

Longer term, we are working on new proprietary process capabilities based on our existing tool hardware platforms. We are also working to integrate our tools with third-
party tools in adjacent process areas in the chip manufacturing flow.

Our  research  and  development  expense  totaled  $19.1  million  or  12.2%  of  revenue  in  2020,  $12.9  million,  or  12.0%  of  revenue,  in  2019  and  $10.4  million,  or  13.9%  of
revenue, in 2018. We intend to continue to invest in research and development to support and enhance our existing cleaning products and to develop future product offerings
to build and maintain our technology leadership position.

Intellectual Property

Our  success  and  future  revenue  growth  depend,  in  part,  on  our  ability  to  protect  our  intellectual  property.  We  control  access  to  and  use  of  our  proprietary  technologies,
software  and  other  confidential  information  through  the  use  of  internal  and  external  controls,  including  contractual  protections  with  employees,  consultants,  advisors,
customers, partners and suppliers. We rely primarily on patent, copyright, trademark and trade secret laws, as well as confidentiality procedures, to protect our proprietary
technologies  and  processes.  All  employees  and  consultants  are  required  to  execute  confidentiality  agreements  in  connection  with  their  employment  and  consulting
relationships  with  us.  We  also  require  them  to  agree  to  disclose  and  assign  to  us  all  inventions  conceived  or  made  in  connection  with  the  employment  or  consulting
relationship.

We have aggressively pursued intellectual property since our founding in 1998. We focus our patent filing efforts in the United States, and, when justified by cost and strategic
importance, we file corresponding foreign patent applications in strategic jurisdictions such as the European Union, the PRC, Japan, Singapore, South Korea, and Taiwan. Our
patent strategy is designed to provide a balance between the need for coverage in our strategic markets and the need to maintain costs at a reasonable level.

As of December 31, 2020, we had 28 issued patents, and 30 patents pending, in the United States. These patents carry expiration dates from 2022 through 2039. Many of the
US patents and applications have also been filed internationally, in one or more of the European Union, Japan, PRC, Singapore, South Korea, and Taiwan. Specifically, we
own patents in wafer cleaning, electro-polishing and plating, wafer preparation, and other semiconductor processing technologies. We have been issued more than 350 patents
in the United States, the PRC, Japan, Korea, Singapore and Taiwan.

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We  manufacture  advanced  single-wafer  cleaning  systems  equipped  with  our  SAPS,  TEBO  and  Tahoe  technologies.  Our  wafer  cleaning  technologies  are  protected  by  US
Patent Numbers 8580042, 8671961, 9070723, 928177,  9492852, 9595457, 9633833, and 10020208 as well as their corresponding international patents. We have 35 patents
granted internationally protecting our SAPS technologies. We also have filed 11 international patent applications for key TEBO technologies, and 2 for Tahoe, in accordance
with the Patent Cooperation Treaty, in anticipation of filing in the U.S. national phase.

In addition to the above core technologies, we have technologies for SFP and ECP that are used in certain of our tools. SFP is an integral part of the electro polishing process.
Our technology was a breakthrough in electro-chemical-copper-planarization technology when it was first introduced, because it can polish, stress-free, copper layers used in
copper low-K interconnects. Our innovations in SFP and ECP are reflected in US Patent Numbers 6638863, 8518224, and 10227705, and their corresponding international
counterparts.

We  also  have  technologies  in  other  semiconductor  processing  areas,  such  as  wafer  preparation  and  some  specific  processing  steps.  The  wafer  preparation  technology  is
covered  by  US  Patent  Numbers  8383429    and  9295167.  The  specific  processing  steps  include  US  Patent  Number  8598039  titled  “Barrier  layer  removal  method  and
apparatus,” and US Patent Number 10615073 titled “method for removing barrier layer for minimizing sidewall recess.”

To  date  we  have  not  granted  licenses  to  third  parties  under  the  patents  described  above.  Not  all  of  these  patents  have  been  implemented  in  products.  We  may  enter  into
licensing or cross-licensing arrangements with other companies in the future.

We  cannot  assure  you  that  any  patents  will  issue  from  any  of  our  pending  applications.  Any  rights  granted  under  any  of  our  existing  or  future  patents  may  not  provide
meaningful protection or any commercial advantage to us. With respect to our other proprietary rights, it may be possible for third parties to copy or otherwise obtain and use
our proprietary technology or marks without authorization or to develop similar technology independently.

The semiconductor equipment industry is characterized by vigorous protection and pursuit of intellectual property rights or positions, which have resulted in often protracted
and expensive litigation. We may in the future initiate claims or litigation against third parties to determine the validity and scope of proprietary rights of others. In addition,
we may in the future initiate litigation to enforce our intellectual property rights or the rights of our customers or to protect our trade secrets.

Our  customers  could  become  the  target  of  litigation  relating  to  the  patent  or  other  intellectual  property  rights  of  others.  This  could  trigger  technical  support  and
indemnification obligations in some of our customer agreements. These obligations could result in substantial expenses, including the payment by us of costs and damages
related to claims of patent infringement. In addition to the time and expense required for us to provide support or indemnification to our customers, any such litigation could
disrupt  the  businesses  of  our  customers,  which  in  turn  could  hurt  our  relations  with  our  customers  and  cause  the  sale  of  our  products  to  decrease.  We  do  not  have  any
insurance coverage for intellectual property infringement claims for which we may be obligated to provide indemnification.

Additional information about the risks relating to our intellectual property is provided under “Item 1A. Risk Factors—Risks Relating to Our Intellectual Property.”

Competition

The chip equipment industry is characterized by rapid change and is highly competitive throughout the world. We compete with semiconductor equipment companies located
around the world, and we may also face competition from new and emerging companies, including new competitors from the PRC. We consider our principal competitors to
be  those  companies  that  provide  single-wafer  cleaning  products  to  the  market,  including  Lam  Research  Corporation,    Kokusai  Semiconductor  Equipment  Corporation,
NAURA Technology Group Co., Ltd., , Mujin Electronics Co., Ltd., SCREEN SPE USA, LLC (a subsidiary of SCREEN Holdings Co., Ltd.), SEMES Co. Ltd. and Tokyo
Electron Ltd.

Compared to our company, our current and potential competitors may have:
●
●

better established credibility and market reputations, longer operating histories, and broader product offerings;
significantly  greater  financial,  technical,  marketing  and  other  resources,  which  may  allow  them  to  pursue  design,  development,  manufacturing,  sales,  marketing,
distribution and service support of their products;
more  extensive  customer  and  partner  relationships,  which  may  position  them  to  identify  and  respond  more  successfully  to  market  developments  and  changes  in
customer demands; and
multiple product offerings, which may enable them to offer bundled discounts for customers purchasing multiple products or other incentives that we cannot match or
offer.

●

●

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The principal competitive factors in our market include:
●

performance of products, including particle removal efficiency, rate of damage to wafer structures, high temperature chemistry, throughput, tool uptime and reliability,
safety, chemical waste treatment, and environmental impact;
service support capability and spare parts delivery time; innovation and development of functionality and features that are must-haves for advanced fabrication nodes;
ability to anticipate customer requirements, especially for advanced process nodes of less than 45nm; ability to identify new process applications;
brand recognition and reputation; and
skill and capability of personnel, including design engineers, manufacturing engineers and technicians, application engineers, and service engineers.

●
●
●
●

In  addition,  semiconductor  manufacturers  must  make  a  substantial  investment  to  qualify  and  integrate  new  equipment  into  semiconductor  production  lines.  Some
manufacturers began fabricating chips for the 10nm node in 2017 and the 7nm node in 2018, and we have one customer that is evaluating implementation of our equipment at
these  nodes.  Once  a  semiconductor  manufacturer  has  selected  a  particular  supplier’s  equipment  and  qualified  it  for  production,  the  manufacturer  generally  maintains  that
selection  for  that  specific  production  application  and  technology  node  as  long  as  the  supplier’s  products  demonstrate  performance  to  specification  in  the  installed  base.
Accordingly,  we  may  experience  difficulty  in  selling  to  a  given  manufacturer  if  that  manufacturer  has  qualified  a  competitor’s  equipment.  If,  however,  that  cleaning
equipment constrains chip yield, we expect, based on our experience to date, that the manufacturer will evaluate implementing new equipment that cleans more effectively.

We focus on the high-end fabrication market with advanced nodes, and we believe we compete favorably with respect to the factors described above. Most of our competitors
offer single-wafer cleaning products using jet spray technology, which has relatively poor particle removal efficiency for random defects less than 30nm in size and presents
increased  risk  of  damage  to  the  fragile  patterned  architectures  of  wafers  at  advanced  process  nodes.  Certain  of  our  competitors  offer  single-wafer  cleaning  products  with
megasonic cleaning capability, but we believe these products, which use conventional megasonic technology, are unable to maintain energy dose uniformity on the entire
wafer and often lack the ability to repeat the requisite uniform energy dose wafer to wafer in production, resulting in poor efficiency in removing random defects, longer
processing time and greater loss of material. In addition, these conventional megasonic products generate transient cavitation, which results in more incidents of damage to
wafer structures with feature sizes of 70nm or less. We design our cleaning tools equipped with our proprietary SAPS, TEBO and Tahoe technologies, which we believe offer
better performance, much less chemical consumption, and lower cost of consumables, including at advanced process nodes of 22nm or less.

Employees and Human Capital

As  of  December  31,  2020,  we  had  543  full-time  equivalent  employees,  of  whom  59  were  in  administration,  127  were  in  manufacturing,  216  were  in  research  and
development, and 141 were in sales and marketing and customer services. Of these employees, 485 were located in mainland China and the Taiwan region, 49 were located in
Korea  and  9  were  based  in  the  United  States.  We  have  never  had  a  work  stoppage,  and  none  of  our  employees  are  represented  by  a  labor  organization  or  subject  to  any
collective bargaining arrangements. We consider our employee relations to be good.

We  compete  in  the  highly  competitive  semiconductor  equipment  industry,  with  operations  principally  in  the  PRC.  Attracting,  developing,  and  retaining  skilled  and
experienced employees in research and development, manufacturing, sales and marketing, and other positions is crucial to our ability to compete effectively. Our ability to
recruit  and  retain  such  employees  depends  on  a  number  of  factors,  including  our  corporate  culture  and  work  environment,  informed  by  our  values  and  behaviors,  our
corporate philosophy of talent development and career opportunities, and compensation and benefits.

To attract and retain qualified employees and key talent, we offer total compensation packages that are competitive with comparable companies, particularly in the PRC and,
specifically, Shanghai.

We provide training and development programs to our employees, and we have trained many of our key engineers and managers for more than a decade. Retention of these
key employees is critical to secure our future growth and technology development. To assist in employee retention and recruitment, we intend to offer employee housing in
the Lingang region of Shanghai in connection with ACM Shanghai’s recent acquisition of a land use right in Lingang, where we began construction of a new research and
development center and factory in July 2020.

When it comes to employee safety, we are committed to providing a safe work environment for our employees that meets or exceeds local environmental, health, and safety
laws and regulations. As a result of the COVID-19 pandemic, we have augmented certain of our normal business practices to ensure that we promote health and safety for our
employees.  We  have  established  safety  policies  and  protocols,  and  we  regularly  update  our  employees  with  respect  to  any  changes.  A  majority  of  our  workforce  provide
services  that  cannot  be  performed  remotely,  and  we  have  prioritized  the  health  of  those  individuals  that  continue  to  work  at  our  facilities.  We  have  provided  personal
protective  equipment  and  cleaning  supplies.  We  require  masks  to  be  worn  in  our  facilities  and  have  prohibited  all  non-essential  domestic  and  international  travel  for  all
employees. We have also provided general information updates and support for our employees to ensure that they have resources and information to protect their health and
that of those around them, including their families and co-workers.

Environmental

Severe weather events, including earthquakes, fires, floods, heat waves, hurricanes and other environmental disasters, could pose a threat to our manufacturing and research
and  development  activities  through  physical  damage  to  our  operating  facilities  or  equipment  or  disruption  of  power  supply  or  telecommunications  infrastructure.  The
frequency and intensity of severe weather events are reportedly increasing throughout the world as part of broader climate changes. Global weather pattern changes may also
pose long-term risks of physical impacts to our business. We maintain disaster recovery and business continuity plans that would be implemented to help us recover in the
event  of  severe  weather  events  that  interrupt  our  business.  See  “Item  1A.  Risk  Factors—General—Our  production  facilities  could  be  damaged  or  disrupted  by  a  natural
disaster, war, terrorist attacks or other catastrophic events.”

Concerns about climate change have resulted in various laws and regulations that are intended to limit carbon emissions and address other environmental concerns. In recent
years, the PRC, where our production facilities are located, has undertaken comprehensive sustainability initiatives that are requiring companies to meet new environmental
standards and deal with higher energy and other production costs. Environmental laws and regulations may impose new or unexpected either directly through, for example,
higher energy costs or indirectly through increased costs of compliance or of failing to comply with these laws and regulations. These laws and regulations might increase the
cost of construction, maintenance and operation of our new research and development center and factory in the Lingang region of Shanghai.

We do not currently expect that existing or pending climate change laws and regulations will be material to our results of operations in the foreseeable future. Climate change
could,  however,  have  a  direct  effect  on  our  customer  base  of  semiconductor  fabricators,  whose  operations  typically  require  copious  quantities  of  power  and  water  and  a
number of chemicals. Chip fabrication operations often result in significant amounts of wastewater, which can contain a number of harmful contaminants, including antimony,
arsenic, hydrofluoric acid and hydrogen peroxide, that historically have resulted in groundwater pollution and related violations of environmental laws. Moreover, water and
chemical demands for semiconductor fabrication are expected to increase with the production of more advanced chips at smaller process nodes. As a result, some leading chip
fabricators have begun to invest in conservation and treatment technologies for water and chemicals.

We  have  designed  our  wet  cleaning  front-end  processing  tools  to  require  significantly  reduced  levels  of  environmentally  harmful  chemicals,  which  helps  customers  face
increased  environmental  laws  and  regulations.  SAPS  and  TEBO  technologies  use  environmentally  friendly  dilute  chemicals,  such  as  dilute  hydrofluoric  acid,  RCA  SC-1
solution, ozonated de-ionized water and functional de-ionized water with dissolved hydrogen. In interconnect and barrier metals applications based on SAPS technology, for
example,  these  chemical  solutions  take  the  place  of  chemicals  such  as  piranha  solution,  a  high-temperature  mixture  of  sulfuric  acid  and  hydrogen  peroxide  used  by
conventional wet wafer cleaning processes. Similarly, Tahoe technology delivers high cleaning performance using significantly less sulfuric acid and hydrogen peroxide than
is  typically  consumed  by  conventional  high-temperature  single-wafer  cleaning  tools.  For  additional  information,  see  “—Our  Technology  and  Product  Offerings—Wet
Cleaning Equipment for Front End Production Processes.”

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Available Information

We are required to file annual, quarterly and current reports, proxy statements and other information with the SEC. The SEC maintains a website at www.sec.gov that contains
reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC.

Our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, proxy statements and amendments to those documents filed or furnished
pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, or the Exchange Act, are also available free of charge on our website at www.acmrcsh.com as soon
as reasonably practicable after such reports are electronically filed with or furnished to the SEC.

Investors should note that we announce material information to our investors and others using filings with the SEC, press releases, public conference calls, webcasts or our
website (www.acmrcsh.com), including news and announcements regarding our financial performance, key personnel, our brands and our business strategy. Information that
we post on our corporate website could be deemed material to investors. We encourage investors to review the information we post on these channels. We may from time to
time update the list of channels we will use to communicate information that could be deemed material and will post information about any such change on
www.acmrcsh.com. The information on our website is not, and shall not be deemed to be, a part hereof or incorporated into this or any of our other filings with the SEC.

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Item 1A.

Risk Factors

Investing in Class A common stock involves a high degree of risk. You should consider and read carefully all of the risks and uncertainties described below, as well as other
information contained in this report, including the consolidated financial statements and related notes set forth in “Item 1. Financial Statements” of Part I above, before
making an investment decision. The occurrence of any of the following risks or additional risks and uncertainties not presently known to us or that we currently believe to be
immaterial could materially and adversely affect our business, financial condition, results of operations or cash flows. In any such case, the trading price of Class A common
stock could decline, and you may lose all or part of your investment. This report also contains forward-looking statements and estimates that involve risks and uncertainties.
Our  actual  results  could  differ  materially  from  those  anticipated  in  the  forward-looking  statements  as  a  result  of  specific  factors,  including  the  risks  and  uncertainties
described below.

RISK FACTOR SUMMARY

Our  business  is  subject  to  a  number  of  risks,  including  risks  that  may  prevent  us  from  achieving  our  business  objectives  or  may  adversely  affect  our  business,  financial
condition, results of operations, cash flows and prospects. The risks are discussed more fully below and include, but are not limited to, the risks summarized below.

Risks Related to Our Business and Our Industry
● our limited operating income;
● our potential future needs for additional capital that may not be available at all or on terms acceptable to us;
● the cyclicality in the semiconductor industry that may lead to substantial variations in demand for our products,
● industry manufacturers of integrated circuits, or chips, adopting our Space Alternated Phase Shift or SAPS, Timely Energized Bubble Oscillation or TEBO, Tahoe and

Electro-Chemical Plating or ECP, technologies and Furnace our single-wafer wet cleaning equipment and other capital equipment, or tools;

● our SAPS, TEBO, Tahoe and ECP technologies not achieving widespread market acceptance;
● our ability to continue to enhance our existing single-wafer wet cleaning tools and identifying and entering  new product markets;
● our ability to establish and maintain a reputation for credibility and product quality;
● our ability to expand our customer base;
● our dependence on a small number of customers for a substantial portion of our revenue;
● our long and unpredictable sales cycle, including our incurrence of significant expenses long before we can recognize revenue from new products, if at all;
● difficulties in forecasting demand for our tools;
● our reliance on third parties to manufacture significant portions of our tools and our ability to manage our relationships with these parties;
● any shortage of components or subassemblies, which could result in delayed delivery of products to us or in increased costs to us;
● our dependence on a limited number of suppliers, including single source suppliers, for critical components and subassemblies;
● our dependence on our Chief Executive Officer and President and other senior management and key employees.

Regulatory Risks
● changes in government trade policies that could limit the demand for our tools and increase the cost of our tools;
● regulatory action limiting our ability to sell our tools to Chinese customers;
● changes in political and economic policies with respect to the People’s Republic of China or PRC;
● the inability of the U.S. Public Company Accounting Oversight Board, or PCAOB, to inspect our auditor, as a registered public accounting firm operating in the PRC and

the adoption of proposed legislation related to companies operating in “restrictive markets”

Risks Related to Our STAR Market Listing
● our ability to implement our strategy to expand our PRC operations by completing an initial public offering and listing of shares of ACM Shanghai on the Shanghai Stock

Exchange’s Sci-Tech innovAtion boaRd, or STAR Market;

● our ability to achieve the results contemplated by our business strategy and our strategy for growth in the PRC related to the STAR Market listing;
● the effect of ACM Shanghai’s status as a publicly traded company that is controlled, but less than wholly owned, by ACM Research;
● our ability to manage potentially inconsistent accounting and disclosure requirements of ACM Research and ACM Shanghai if the planned listing initial public offering
of shares of ACM Shanghai in the PRC, which we refer to as the STAR IPO, in connection with the planned listing, which we refer to as the STAR Listing, of ACM
Shanghai shares on the STAR Market are completed;

Risks Related to Our Intellectual Property and Data Security
● our ability to protect our intellectual property, including in the PRC;
● breaches of our cybersecurity systems;

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Risks Related to the COVID‑19 Outbreak
● impacts on our global supply chain due to the COVID‑19 outbreak;
● the impact of the COVID‑19 outbreak on our currently planned projects and investments in the PRC, including the STAR IPO.

Risks Related to Ownership of Class A Common Stock
● the volatility in the market price of Class A common stock;
● manipulative short sellers of our stock, which may drive down the market price of our Class A common stock and could result in litigation;
● the difficulty to predict the effect of the proposed STAR Listing and STAR IPO on the Class A common stock;
● the dual class structure of Class A common stock, which has the effect of concentrating voting control with our executive officers and directors;
● the limited experience of our management team managing a public company, including a “large accelerated filer.”

RISK FACTORS

Risks Related to Our Business and Our Industry

We have generated limited operating income in the past, and if our revenue does not meet our expectations in future years we may not be able to maintain or increase our
profitability.

We  have  incurred  significant  losses  since  our  inception  in  1998.  We  generated  net  income  of  $21.7  million  in  2020,  $19.5  million  in  2019  and  $6.6  million  in  2018,  but
incurred net losses in every year from 1998 to 2015 and in 2017. We have a limited history of generating meaningful levels of revenue, and we expect our costs to increase in
future periods. If we are unable to increase our revenue at a rate sufficient to offset the expected increase in our costs, our business, financial position and results of operations
will be harmed and we may not be able to achieve or maintain profitability over the long term.

Our revenue was $156.6 million in 2020, $107.5 million in 2019 and $74.6 million in 2018, but totaled only $36.5 million in 2017, $27.4 million in 2016 and $31.2 million in
2015. Our ability to generate significant revenue depends on a number of factors, including our ability to:
●
●
●
●

achieve wider market acceptance of Ultra C equipment based on SAPS, TEBO and Tahoe technology;
increase our customer base in the PRC and globally, including the establishment of relationships with companies in the United States;
continue to expand our supplier relationships with third parties; and
establish and maintain our reputation for providing efficient on-time delivery of high quality products.

We expect to expend increasing levels of financial and other resources on:
●
●

research and development, including continued investments in our research and development team;
sales and marketing, including a significant expansion of our sales organization, both domestically and internationally, building our brand, and providing our tools for
evaluation by customers;
the cost of goods being manufactured and sold for our installed base; and
expansion of field service.

●
●

These investments may not result in increased revenue or growth in our business.

Additionally, we may encounter unforeseen operating expenses, difficulties, complications, delays and other factors that may result in losses in future periods. If we fail to
regain and sustain profitability on a continuing basis, we may be unable to continue our operations at planned levels and be forced to reduce our operations or even shut down.

We may require additional capital in the future and we cannot give any assurance that such capital will be available at all or available on terms acceptable to us and, if it
is available, additional capital raised by us may dilute holders of Class A common stock.

We may need to raise funds in the future, depending on many factors, including:
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our sales growth;
the costs of applying our existing technologies to new or enhanced products;
the costs of developing new technologies and introducing new products;

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the costs associated with protecting our intellectual property;
the costs associated with our expansion, including capital expenditures and Lingang-related land purchases and deposits,  and with increasing our sales and marketing
and service and support efforts, and with expanding our geographic operations;
our ability to continue to obtain governmental subsidies for developmental projects in the future;
future debt repayment obligations; and
the number and timing of any future acquisitions.

To the extent that our existing sources of cash, together with any cash generated from operations, are insufficient to fund our activities, we may need to raise additional funds
through public or private financings, strategic relationships, or other arrangements. Additional funding may not be available to us on acceptable terms or at all. If adequate
funding is not available, we may be required to reduce expenditures, including curtailing our growth strategies and reducing our product development efforts, or to forego
acquisition opportunities.

Proceeds received by ACM Shanghai from the initial placements of shares with PRC investors and from the planned listing initial public offering of shares of ACM Shanghai
in the PRC, which we refer to as the STAR IPO, in connection with the planned listing, which we refer to as the STAR Listing, of ACM Shanghai shares on the STAR Market
will  be  used  to  grow  and  support  our  PRC  operations.  Those  proceeds  generally  will  not  be  available  for  distribution  to  ACM  Research.  Under  existing  PRC  laws  and
regulations,  it  may  be  difficult,  if  not  impossible,  for  ACM  Research  to  be  able  to  receive  dividends  comprised  of  funds  generated  by  ACM  Shanghai  and,  even  if  such
dividends can be paid from the PRC to the United States, after the completion of the STAR Listing and the STAR IPO, any such dividends can be paid to ACM Research only
if  other  holders  of  ACM  Shanghai  shares  receive  their  pro  rata  dividends.  As  a  result,  it  is  unlikely  that  funds  raised  or  generated  by  ACM  Shanghai  will  be  readily
distributable to ACM Research.

If we succeed in raising additional funds through the issuance of equity or convertible securities, then the issuance could result in substantial dilution to existing stockholders.
Furthermore, the holders of these new securities or debt may have rights, preferences and privileges senior to those of the holders of Class A common stock. In addition, any
preferred equity issuance or debt financing that we may obtain in the future could have restrictive covenants relating to our capital raising activities and other financial and
operational matters, which may make it more difficult for us to obtain additional capital and to pursue business opportunities, including potential acquisitions.

Our quarterly operating results can be difficult to predict and can fluctuate substantially, which could result in volatility in the price of Class A common stock.

Our quarterly revenue and other operating results have varied in the past and are likely to continue to vary significantly from quarter to quarter. Accordingly, you should not
rely upon our past quarterly financial results as indicators of future performance. Any variations in our quarter-to-quarter performance may cause our stock price to fluctuate.
Our financial results in any given quarter can be influenced by a variety of factors, including:
●
●

the cyclicality of the semiconductor industry and the related impact on the purchase of equipment used in the manufacture of chips;
the timing of purchases of our tools by chip fabricators, which order types of tools based on multi-year capital plans under which the number and dollar amount of tool
purchases can vary significantly from year to year;
the  relatively  high  average  selling  price  of  our  tools  and  our  dependence  on  a  limited  number  of  customers  for  a  substantial  portion  of  our  revenue  in  any  period,
whereby the timing and volume of purchase orders or cancellations from our customers could significantly reduce our revenue for that period;
the significant expenditures required to customize our products often exceed the deposits received from our customers;
the lead time required to manufacture our tools;
the timing of recognizing revenue due to the timing of shipment and acceptance of our tools;
our ability to sell additional tools to existing customers;
the changes in customer specifications or requirements;
the length of our product sales cycle;
changes in our product mix, including the mix of systems, upgrades, spare parts and service;
the timing of our product releases or upgrades or announcements of product releases or upgrades by us or our competitors, including changes in customer orders in
anticipation of new products or product enhancements;
our ability to enhance our tools with new and better functionality that meet customer requirements and changing industry trends;
constraints on our suppliers’ capacity;
our ability to sell our tools to Chinese customers due to regulatory restrictions, including the addition of our customers to the Entity List;

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the timing of investments in research and development related to releasing new applications of our technologies and new products;
delays in the development and manufacture of our new products and upgraded versions of our products and the market acceptance of these products when introduced;
our ability to control costs, including operating expenses and the costs of the components and subassemblies used in our products;
the costs related to the acquisition and integration of product lines, technologies or businesses; and
the costs associated with protecting our intellectual property, including defending our intellectual property against third-party claims or litigation.

Seasonality has played an increasingly important role in the market for chip manufacturing tools. The period of November through February has been a particularly weak
period historically for manufacturers of chip tools, in part because capital equipment needed to support manufacturing of chips for the December holidays usually needs to be
in  the  supply  chain  by  no  later  than  October  and  chip  makers  in  Asia  often  wait  until  after  Chinese,  or  Lunar,  New  Year,  which  occurs  in  January  or  February,  before
implementing their capital acquisition plans. The timing of new product releases also has an impact on seasonality, with the acquisition of manufacturing equipment occurring
six to nine months before a new release.

Many of these factors are beyond our control, and the occurrence of one or more of them could cause our operating results to vary widely. As a result, it is difficult for us to
forecast our quarterly revenue accurately. Our results of operations for any quarter may not be indicative of results for future quarters and quarter-to-quarter comparisons of
our operating results are not necessarily meaningful. Variability in our periodic operating results could lead to volatility in our stock price. Because a substantial proportion of
our expenses are relatively fixed in the short term, our results of operations will suffer if revenue falls below our expectations in a particular quarter, which could cause the
price of Class A common stock to decline. Moreover, as a result of any of the foregoing factors, our operating results might not meet our announced guidance or expectations
of public market analysts or investors, in which case the price of Class A common stock could decrease significantly.

Cyclicality in the semiconductor industry is likely to lead to substantial variations in demand for our products, and as a result our operating results could be adversely
affected.

The  chip  industry  has  historically  been  cyclic  and  is  characterized  by  wide  fluctuations  in  product  supply  and  demand.  From  time  to  time,  this  industry  has  experienced
significant  downturns,  often  in  connection  with,  or  in  anticipation  of,  maturing  product  and  technology  cycles,  excess  inventories  and  declines  in  general  economic
conditions. This cyclicality could cause our operating results to decline dramatically from one period to the next.

Our business depends upon the capital spending of chip manufacturers, which, in turn, depends upon the current and anticipated market demand for chips. During industry
downturns, chip manufacturers often have excess manufacturing capacity and may experience reductions in profitability due to lower sales and increased pricing pressure for
their products. As a result, chip manufacturers generally sharply curtail their spending during industry downturns and historically have lowered their spending more than the
decline in their revenues. If we are unable to control our expenses adequately in response to lower revenue from our customers, our operating results will suffer and we could
experience operating losses.

Conversely,  during  industry  upturns  we  must  successfully  increase  production  output  to  meet  expected  customer  demand.  This  may  require  us  or  our  suppliers,  including
third-party contractors, to order additional inventory, hire additional employees and expand manufacturing capacity. If we are unable to respond to a rapid increase in demand
for our tools on a timely basis, or if we misjudge the timing, duration or magnitude of such an increase in demand, we may lose business to our competitors or incur increased
costs disproportionate to any gains in revenue, which could have a material adverse effect on our business, results of operations, financial condition or cash flows.

The  PRC  government  is  implementing  focused  policies,  including  state-led  investment  initiatives,  that  aim  to  create  and  support  an  independent  domestic  semiconductor
supply chain spanning from design to final system production. If these policies, which include loans and subsidies, result in lower demand for equipment than is expected by
equipment  manufacturers,  the  resulting  overcapacity  in  the  chip  manufacturing  equipment  market  could  lead  to  excess  inventory  and  price  discounting  that  could  have  a
material adverse effect on our business and operating results.

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Our success will depend on industry chip manufacturers adopting our SAPS, TEBO,  Tahoe and ECP technologies.

To date our strategy for commercializing our tools has been to place them with selected industry leaders in the manufacturing of memory and logic chips, the two largest chip
categories, to enable those leading manufacturers to evaluate our technologies, and then leverage our reputation to gain broader market acceptance. In order for these industry
leaders to adopt our tools, we need to establish our credibility by demonstrating the differentiated, innovative nature of our SAPS, TEBO and Tahoe technologies. Our SAPS
technology  has  been  tested  and  purchased  by  industry  leaders,  but  has  not  achieved,  and  may  never  achieve,  widespread  market  acceptance.  We  have  initiated  a  similar
commercialization  process  for  our  TEBO  technology  with  a  selected  group  of  industry  leaders.  If  these  leading  manufacturers  do  not  agree  that  our  technologies  add
significant value over conventional technologies or do not otherwise accept and use our tools, we may need to spend a significant amount of time and resources to enhance
our technologies or develop new technologies. Even if these leading manufacturers adopt our technologies, other manufacturers may not choose to accept and adopt our tools
and our products may not achieve widespread adoption. Any of the above factors would have a material adverse effect on our business, results of operations and financial
condition.

If our SAPS, TEBO, Tahoe and ECP technologies do not achieve widespread market acceptance, we will not be able to compete effectively.

The commercial success of our tools will depend, in part, on gaining substantial market acceptance by chip manufacturers. Our ability to gain acceptance for our products will
depend upon a number of factors, including:
●

our ability to demonstrate the differentiated, innovative nature of our SAPS, TEBO, Tahoe and ECP technologies and the advantages of our tools over those of our
competitors;
compatibility of our tools with existing or potential customers’ manufacturing processes and products;
the level of customer service available to support our products; and
the experiences our customers have with our products.

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In addition, obtaining orders from new customers may be difficult because many chip manufacturers have pre-existing relationships with our competitors. Chip manufacturers
must make a substantial investment to qualify and integrate wet processing equipment into a chip production line. Due, in part, to the cost of manufacturing equipment and the
investment necessary to integrate a particular manufacturing process, a chip manufacturer that has selected a particular supplier’s equipment and qualified that equipment for
production typically continues to use that equipment for the specific production application and process node, which is the minimum line width on a chip, as long as that
equipment  continues  to  meet  performance  specifications.  Some  of  our  potential  and  existing  customers  may  prefer  larger,  more  established  vendors  from  which  they  can
purchase equipment for a wider variety of process steps than our tools address. Further, because the cleaning process with our TEBO equipment can be up to five times longer
than  cleaning  processes  based  on  other  technologies,  we  must  convince  chip  manufacturers  of  the  innovative,  differentiated  nature  of  our  technologies  and  the  benefits
associated with using our tools. If we are unable to obtain new customers and continue to achieve widespread market acceptance of our tools, then our business, operations,
financial results and growth prospects will be materially and adversely affected.

If we do not continue to enhance our existing single-wafer wet cleaning tools and achieve market acceptance, we will not be able to compete effectively.

We operate in an industry that is subject to evolving standards, rapid technological changes and changes in customer demands. Additionally, if process nodes continue to
shrink to ever-smaller dimensions and conventional two-dimensional chips reach their critical performance limitations, the technology associated with manufacturing chips
may advance to a point where our Ultra C equipment based on SAPS, TEBO, Tahoe, and ECP technologies becomes obsolete. Accordingly, the future of our business will
depend in large part upon the continuing relevance of our technological capabilities, our ability to interpret customer and market requirements in advance of tool deliveries,
and  our  ability  to  introduce  in  a  timely  manner  new  tools  that  address  chip  makers’  requirements  for  cost-effective  cleaning  solutions.  We  expect  to  spend  a  significant
amount of time and resources developing new tools and enhancing existing tools. Our ability to introduce and market successfully any new or enhanced cleaning equipment is
subject to a wide variety of challenges during the tool’s development, including the following:
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accurate anticipation of market requirements, changes in technology and evolving standards;
the availability of qualified product designers and technologies needed to solve difficult design challenges in a cost-effective, reliable manner;
our ability to design products that meet chip manufacturers’ cost, size, acceptance and specification criteria, and performance requirements;
the ability and availability of suppliers and third-party manufacturers to manufacture and deliver the critical components and subassemblies of our tools in a timely
manner;
market acceptance of our customers’ products, and the lifecycle of those products; and
our ability to deliver products in a timely manner within our customers’ product planning and deployment cycle.

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Certain enhancements to our Ultra C equipment in future periods may reduce demand for our pre-existing tools. As we introduce new or enhanced cleaning tools, we must
manage the transition from older tools in order to minimize disruptions in customers’ ordering patterns, avoid excessive levels of older tool inventories and ensure timely
delivery of sufficient supplies of new tools to meet customer demand. Furthermore, product introductions could delay purchases by customers awaiting arrival of our new
products, which could cause us to fail to meet our expected level of production orders for pre-existing tools.

Our success will depend on our ability to identify and enter new product markets.

We  expect  to  spend  a  significant  amount  of  time  and  resources  identifying  new  product  markets  in  addition  to  the  market  for  cleaning  solutions  and  in  developing  new
products for entry into these markets. Our TEBO technology took eight years to develop, and development of any new technology could require a similar, or even longer,
period of time. Product development requires significant investments in engineering hours, third-party development costs, prototypes and sample materials, as well as sales
and  marketing  expenses,  which  will  not  be  recouped  if  the  product  launch  is  unsuccessful.  We  may  fail  to  predict  the  needs  of  other  markets  accurately  or  develop  new,
innovative technologies to address those needs. Further, we may not be able to design and introduce new products in a timely or cost-efficient manner, and our new products
may be more costly to develop, may fail to meet the requirements of the market, or may be adopted slower than we expect. If we are not able to introduce new products
successfully, our inability to gain market share in new product markets could adversely affect our ability to sustain our revenue growth or maintain our current revenue levels.

If we fail to establish and maintain a reputation for credibility and product quality, our ability to expand our customer base will be impaired and our operating results
may suffer.

We must develop and maintain a market reputation for innovative, differentiated technologies and high quality, reliable products in order to attract new customers and achieve
widespread market acceptance of our products. Our market reputation is critical because we compete against several larger, more established competitors, many of which
supply equipment for a larger number of process steps than we do to a broader customer base in an industry with a limited number of customers. In these circumstances,
traditional  marketing  and  branding  efforts  are  of  limited  value,  and  our  success  depends  on  our  ability  to  provide  customers  with  reliable  and  technically  sophisticated
products.  If  the  limited  customer  base  does  not  perceive  our  products  and  services  to  be  of  high  quality  and  effectiveness,  our  reputation  could  be  harmed,  which  could
adversely impact our ability to achieve our targeted growth.

We operate in a highly competitive industry and many of our competitors are larger, better-established, and have significantly greater operating and financial resources
than we have.

The  chip  equipment  industry  is  highly  competitive,  and  we  face  substantial  competition  throughout  the  world  in  each  of  the  markets  we  serve.  Many  of  our  current  and
potential competitors have, among other things:
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greater financial, technical, sales and marketing, manufacturing, distribution and other resources;
established credibility and market reputations;
longer operating histories;
broader product offerings;
more extensive service offerings, including the ability to have large inventories of spare parts available near, or even at, customer locations;
local sales forces; and
more extensive geographic coverage.

These competitors may also have the ability to offer their products at lower prices by subsidizing their losses in wet cleaning with profits from other lines of business in order
to  retain  current  or  obtain  new  customers.  Among  other  things,  some  competitors  have  the  ability  to  offer  bundled  discounts  for  customers  purchasing  multiple  products.
Many  of  our  competitors  have  more  extensive  customer  and  partner  relationships  than  we  do  and  may  therefore  be  in  a  better  position  to  identify  and  respond  to  market
developments and changes in customer demands. Potential customers may prefer to purchase from their existing suppliers rather than a new supplier, regardless of product
performance  or  features.  If  we  are  not  able  to  compete  successfully  against  existing  or  new  competitors,  our  business,  operating  results  and  financial  condition  will  be
negatively affected.

We  depend  on  a  small  number  of  customers  for  a  substantial  portion  of  our  revenue,  and  the  loss  of,  or  a  significant  reduction  in  orders  from,  one  of  our  major
customers could have a material adverse effect on our revenue and operating results. There are also a limited number of potential customers for our products.

The chip manufacturing industry is highly concentrated, and we derive most of our revenue from a limited number of customers. A total of three customers accounted for
75.8% of our revenue in 2020, 73.8% of our revenue in 2019 and 87.6% of our revenue in 2018.

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As a consequence of the concentrated nature of our customer base, our revenue and results of operations may fluctuate from quarter to quarter and are difficult to estimate,
and any cancellation of orders or any acceleration or delay in anticipated product purchases or the acceptance of shipped products by our larger customers could materially
affect our revenue and results of operations in any quarterly period.

We may be unable to sustain or increase our revenue from our larger customers or offset the discontinuation of concentrated purchases by our larger customers with purchases
by new or existing customers. We expect a small number of customers will continue to account for a high percentage of our revenue for the foreseeable future and that our
results  of  operations  may  fluctuate  materially  as  a  result  of  such  larger  customers’  buying  patterns.  Thus,  our  business  success  depends  on  our  ability  to  maintain  strong
relationships with our customers. The loss of any of our key customers for any reason, or a change in our relationship with any of our key customers, including a significant
delay  or  reduction  in  their  purchases,  may  cause  a  significant  decrease  in  our  revenue,  which  we  may  not  be  able  to  recapture  due  to  the  limited  number  of  potential
customers.

We have seen, and may see in the future, consolidation of our customer base. Industry consolidation generally has negative implications for equipment suppliers, including a
reduction in the number of potential customers, a decrease in aggregate capital spending and greater pricing leverage on the part of consumers over equipment suppliers.
Continued  consolidation  of  the  chip  industry  could  make  it  more  difficult  for  us  to  grow  our  customer  base,  increase  sales  of  our  products  and  maintain  adequate  gross
margins.

Our customers do not enter into long-term purchase commitments, and they may decrease, cancel or delay their projected purchases at any time.

In accordance with industry practice, our sales are on a purchase order basis, which we seek to obtain three to four months in advance of the expected product delivery date.
Until a purchase order is received, we do not have a binding purchase commitment. Our customers to date have provided us with non-binding one- to two-year forecasts of
their anticipated demands, but those forecasts can be changed at any time, without any required notice to us. Because the lead-time needed to produce a tool customized to a
customer’s specifications can extend up to six months, we may need to begin production of tools based on non-binding forecasts, rather than waiting to receive a binding
purchase order. No assurance can be made that a customer’s forecast will result in a firm purchase order within the time period we expect, or at all.

If we do not accurately predict the amount and timing of a customer’s future purchases, we risk expending time and resources on producing a customized tool that is not
purchased by a particular customer, which may result in excess or unwanted inventory, or we may be unable to fulfill an order on the schedule required by a purchase order,
which would result in foregone sales. Customers may place purchase orders that exceed forecasted amounts, which could result in delays in our delivery time and harm our
reputation. In the future a customer may decide not to purchase our tools at all, may purchase fewer tools than it did in the past or may otherwise alter its purchasing patterns,
and the impact of any such actions may be intensified given our dependence on a small number of large customers. Our customers make major purchases periodically as they
add capacity or otherwise implement technology upgrades. If any significant customers cancel, delay or reduce orders, our operating results could suffer.

We  may  incur  significant  expenses  long  before  we  can  recognize  revenue  from  new  products,  if  at  all,  due  to  the  costs  and  length  of  research,  development,
manufacturing and customer evaluation process cycles.

We often incur significant research and development costs for products that are purchased by our customers only after much, or all, of the cost has been incurred or that may
never  be  purchased.  We  allow  some  new  customers,  or  existing  customers  considering  new  products,  to  evaluate  products  without  any  payment  becoming  due  unless  the
product is ultimately accepted, which means we may invest a significant amount in manufacturing a tool that may never be accepted and purchased or may be purchased
months or even years after production. In the past we have borrowed money in order to fund first-time purchase order equipment and next-generation evaluation equipment.
When we deliver evaluation equipment, or a “first tool,” we may not recognize revenue or receive payment for the tool for 24 months or longer. Even returning customers
may take as long as six months to make any payments. If our sales efforts are unsuccessful after expending significant resources, or if we experience delays in completing
sales, our future cash flow, revenue and profitability may fluctuate or be materially adversely affected.

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Our sales cycle is long and unpredictable, which results in variability of our financial performance and may require us to incur high sales and marketing expenses with
no assurance that a sale will result, all of which could adversely affect our profitability.

Our results of operations may fluctuate, in part, because of the resource-intensive nature of our sales efforts and the length and variability of our sales cycle. A sales cycle is
the  period  between  initial  contact  with  a  prospective  customer  and  any  sale  of  our  tools.  Our  sales  process  involves  educating  customers  about  our  tools,  participating  in
extended  tool  evaluations  and  configuring  our  tools  to  customer-specific  needs,  after  which  customers  may  evaluate  the  tools.  The  length  of  our  sales  cycle,  from  initial
contact  with  a  customer  to  the  execution  of  a  purchase  order,  is  generally  6  to  24  months.  During  the  sales  cycle,  we  expend  significant  time  and  money  on  sales  and
marketing activities and make investments in evaluation equipment, all of which lower our operating margins, particularly if no sale occurs or if the sale is delayed as a result
of extended qualification processes or delays from our customers’ customers.

The duration or ultimate success of our sales cycle depends on factors such as:
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efforts by our sales force;
the complexity of our customers’ manufacturing processes and the compatibility of our tools with those processes;
our customers’ internal technical capabilities and sophistication; and
our customers’ capital spending plans and processes, including budgetary constraints, internal approvals, extended negotiations or administrative delays.

It is difficult to predict exactly when, or even if, we will make a sale to a potential customer or if we can increase sales to our existing customers. As a result, we may not
recognize revenue from our sales efforts for extended periods of time, or at all. The loss or delay of one or more large transactions in a quarter could impact our results of
operations for that quarter and any future quarters for which revenue from that transaction is lost or delayed. In addition, we believe that the length of the sales cycle and
intensity of the evaluation process may increase for those current and potential customers that centralize their purchasing decisions.

Difficulties in forecasting demand for our tools may lead to periodic inventory shortages or excess spending on inventory items that may not be used.

We need to manage our inventory of components and production of tools effectively to meet changing customer requirements. Accurately forecasting customers’ needs is
difficult. Our tool demand forecasts are based on multiple assumptions, including non-binding forecasts received from our customers years in advance, each of which may
introduce error into our estimates. Inventory levels for components necessary to build our tools in excess of customer demand may result in inventory write-downs and could
have an adverse effect on our operating results and financial condition. Conversely, if we underestimate demand for our tools or if our manufacturing partners fail to supply
components we require at the time we need them, we may experience inventory shortages. Such shortages might delay production or shipments to customers and may cause
us to lose sales. These shortages may also harm our credibility, diminish the loyalty of our channel partners or customers.

A failure to prevent inventory shortages or accurately predict customers’ needs could result in decreased revenue and gross margins and harm our business.

Some  of  our  products  and  supplies  may  become  obsolete  or  be  deemed  excess  while  in  inventory  due  to  rapidly  changing  customer  specifications,  changes  in  product
structure, components or bills of material as a result of engineering changes, or a decrease in customer demand. We also have exposure to contractual liabilities to our contract
manufacturers for inventories purchased by them on our behalf, based on our forecasted requirements, which may become excess or obsolete. Our inventory balances also
represent an investment of cash. To the extent our inventory turns are slower than we anticipate based on historical practice, our cash conversion cycle extends and more of
our cash remains invested in working capital. If we are not able to manage our inventory effectively, we may need to write down the value of some of our existing inventory
or write off non-saleable or obsolete inventory. Any such charges we incur in future periods could materially and adversely affect our results of operations.

The difficulty in forecasting demand also makes it difficult to estimate our future results of operations and financial condition from period to period. A failure to accurately
predict the level of demand for our products could adversely affect our net revenue and net income, and we are unlikely to forecast such effects with any certainty in advance.

If our tools contain defects or do not meet customer specifications, we could lose customers and revenue.

Highly complex tools such as our may develop defects during the manufacturing and assembly process. We may also experience difficulties in customizing our tools to meet
customer specifications or detecting defects during the development and manufacturing of our tools. Some of these failures may not be discovered until we have expended
significant resources in customizing our tools, or until our tools have been installed in our customers’ production facilities. These quality problems could harm our reputation
as well as our customer relationships in the following ways:

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our customers may delay or reject acceptance of our tools that contain defects or fail to meet their specifications;
we may suffer customer dissatisfaction, negative publicity and reputational damage, resulting in reduced orders or otherwise damaging our ability to retain existing
customers and attract new customers;
we may incur substantial costs as a result of warranty claims or service obligations or in order to enhance the reliability of our tools;
the attention of our technical and management resources may be diverted;
we may be required to replace defective systems or invest significant capital to resolve these problems; and
we may be required to write off inventory and other assets related to our tools.

In addition, defects in our tools or our inability to meet the needs of our customers could cause damage to our customers’ products or manufacturing facilities, which could
result in claims for product liability, tort or breach of warranty, including claims from our customers. The cost of defending such a lawsuit, regardless of its merit, could be
substantial and could divert management’s attention from our ongoing operations. In addition, if our business liability insurance coverage proves inadequate with respect to a
claim or future coverage is unavailable on acceptable terms or at all, we may be liable for payment of substantial damages. Any or all of these potential consequences could
have an adverse impact on our operating results and financial condition.

Warranty claims in excess of our estimates could adversely affect our business.

We have provided warranties against manufacturing defects of our tools that range from 12 to 36 months in duration. Our product warranty requires us to provide labor and
parts necessary to repair defects. As of December 31, 2020, we had accrued $4.0 million in liability contingency for potential warranty claims. Warranty claims substantially
in excess of our expectations, or significant unexpected costs associated with warranty claims, could harm our reputation and could cause customers to decline to place new or
additional orders, which could have a material adverse effect on our business, results of operations and financial condition.

We rely on third parties to manufacture significant portions of our tools and our failure to manage our relationships with these parties could harm our relationships with
our customers, increase our costs, decrease our sales and limit our growth.

Our tools are complex and require components and subassemblies having a high degree of reliability, accuracy and performance. We rely on third parties to manufacture most
of the subassemblies and supply most of the components used in our tools. Accordingly, we cannot directly control our delivery schedules and quality assurance. This lack of
control could result in shortages or quality assurance problems. These issues could delay shipments of our tools, increase our testing costs or lead to costly failure claims.

We do not have long-term supply contracts with some of our suppliers, and those suppliers are not obligated to perform services or supply products to us for any specific
period,  in  any  specific  quantities  or  at  any  specific  price,  except  as  may  be  provided  in  a  particular  purchase  order.  In  addition,  we  attempt  to  maintain  relatively  low
inventories and acquire subassemblies and components only as needed. There are significant risks associated with our reliance on these third-party suppliers, including:
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potential price increases;
capacity shortages or other inability to meet any increase in demand for our products;
reduced control over manufacturing process for components and subassemblies and delivery schedules;
limited  ability  of  some  suppliers  to  manufacture  and  sell  subassemblies  or  parts  in  the  volumes  we  require  and  at  acceptable  quality  levels  and  prices,  due  to  the
suppliers’ relatively small operations and limited manufacturing resources;
increased exposure to potential misappropriation of our intellectual property; and
limited warranties on subassemblies and components supplied to us.

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Any delays in the shipment of our products due to our reliance on third-party suppliers could harm our relationships with our customers. In addition, any increase in costs due
to our suppliers increasing the price they charge us for subassemblies and components or arising from our need to replace our current suppliers that we are unable to pass on
to our customers could negatively affect our operating results.

Any shortage of components or subassemblies could result in delayed delivery of products to us or in increased costs to us, which could harm our business.

The ability of our manufacturers to supply our tools is dependent, in part, upon the availability certain components and subassemblies. Our manufacturers may experience
shortages  in  the  availability  of  such  components  or  subassemblies,  which  could  result  in  delayed  delivery  of  products  to  us  or  in  increased  costs  to  us.  Any  shortage  of
components or subassemblies or any inability to control costs associated with manufacturing could increase the costs for our products or impair our ability to ship orders in a
timely cost-efficient manner. As a result, we could experience cancellation of orders, refusal to accept deliveries or a reduction in our prices and margins, any of which could
harm our financial performance and results of operations.

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We depend on a limited number of suppliers, including single source suppliers, for critical components and subassemblies, and our business could be disrupted if they are
unable to meet our needs.

We  depend  on  a  limited  number  of  suppliers  for  components  and  subassemblies  used  in  our  tools.  Certain  components  and  subassemblies  of  our  tools  have  only  been
purchased from our current suppliers to date and changing the source of those components and subassemblies may result in disruptions during the transition process and entail
significant  delay  and  expense.  We  rely  on:  Product  Systems,  Inc.,  or  ProSys,  as  the  sole  supplier  of  megasonic  transducers,  a  key  subassembly  used  in  our  single-wafer
cleaning  equipment;  Ninebell  Co.,  Ltd.,  or  Ninebell,  as  the  principal  supplier  of  robotic  delivery  system  subassemblies  used  in  our  single-wafer  cleaning  equipment;  and
Advanced Electric Co. Inc., as a key supplier of valves used in our single-wafer cleaning equipment. An adverse change to our relationship with any of these suppliers would
disrupt our production of single-wafer cleaning equipment and could cause substantial harm to our business.

With some of these suppliers, we do not have long-term agreements and instead purchase components and subassemblies through a purchase order process. As a result, these
suppliers may stop supplying us components and subassemblies, limit the allocation of supply and equipment to us due to increased industry demand or significantly increase
their prices at any time with little or no advance notice. Our reliance on a limited number of suppliers could also result in delivery problems, reduced control over product
pricing and quality, and our inability to identify and qualify another supplier in a timely manner.

Moreover, some of our suppliers may experience financial difficulties that could prevent them from supplying us with components or subassemblies used in the design and
manufacture of our products. In addition, our suppliers, including our sole supplier ProSys, may experience manufacturing delays or shut downs due to circumstances beyond
their control, such as labor issues, political unrest or natural disasters. Any supply deficiencies could materially and adversely affect our ability to fulfill customer orders and
our results of operations. We have in the past and may in the future, experience delays or reductions in supply shipments, which could reduce our revenue and profitability. If
key components or materials are unavailable, our costs would increase and our revenue would decline.

We have depended on PRC governmental subsidies to help fund our technology development since 2008, and our failure to obtain additional subsidies may impede our
development of new technologies and may increase our cost of capital, either of which could make it difficult for us to expand our product base.

We received subsidies from local and central governmental authorities in the PRC in 2008, 2009, 2014, 2018, 2019, and 2020. These grants have provided a majority of the
funding for our development and commercialization of stress-free polishing and electro copper-plating technologies. If we are unable to obtain similar governmental subsidies
for development projects in the future, we may need to raise additional funds through public or private financings, strategic relationships, or other arrangements, which could
force us to reduce our efforts to develop technologies beyond SAPS, TEBO, Tahoe and ECP.

The success of our business will depend on our ability to manage any future growth.

We have experienced rapid growth in our business recently due, in part, to an expansion of our product offerings and an increase in the number of customers that we serve.
For example, our headcount grew by 50% in 2020, 32% in 2019, and 35% in 2018. We will seek to continue to expand our operations in the future, including by adding new
offices, locations and employees. Managing our growth has placed and could continue to place a significant strain on our management, other personnel and our infrastructure.
If  we  are  unable  to  manage  our  growth  effectively,  we  may  not  be  able  to  take  advantage  of  market  opportunities,  develop  new  products,  enhance  our  technological
capabilities,  satisfy  customer  requirements,  respond  to  competitive  pressures  or  otherwise  execute  our  business  plan.  In  addition,  any  inability  to  manage  our  growth
effectively could result in operating inefficiencies that could impair our competitive position and increase our costs disproportionately to the amount of growth we achieve. To
manage our growth, we believe we must effectively:
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hire, train, integrate and manage additional qualified engineers for research and development activities, sales and marketing personnel, service and support personnel
and financial and information technology personnel;
manage multiple relationships with our customers, suppliers and other third parties; and
continue to enhance our information technology infrastructure, systems and controls.

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Our organizational structure has become more complex, including as a result of preparations for the STAR Listing and the STAR IPO. We will need to continue to scale and
adapt  our  operational,  financial  and  management  controls,  as  well  as  our  reporting  systems  and  procedures,  at  both  ACM  Research  and  ACM  Shanghai.  The  continued
expansion  of  our  infrastructure  will  require  us  to  commit  substantial  financial,  operational  and  management  resources  before  our  revenue  increases  and  without  any
assurances that our revenue will increase.

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We are highly dependent on our Chief Executive Officer and President and other senior management and key employees.

Our success largely depends on the skills, experience and continued efforts of our management, technical and sales personnel, including in particular Dr. David H. Wang, the
Chair of the Board, Chief Executive Officer and President of ACM Research. All of our senior management are at-will employees, which means either we or the employee
may terminate their employment at any time. If one or more of our other senior management were unable or unwilling to continue their employment with us, we may not be
able to replace them in a timely manner. Moreover, in connection with planning for the STAR Listing and the STAR IPO, ACM Shanghai is now managed by a group of
officers separate from those of ACM Research and those officers owe fiduciary duties to the various stakeholders of ACM Shanghai. We do not have employment or retention
agreements with, or maintain key person life insurance policies on, any of our employees. Our business may be severely disrupted and our financial condition and results of
operations may be materially and adversely affected. In addition, our senior management may join a competitor or form a competing company. The loss of Dr. Wang or other
key management personnel, including our Chief Financial Officer, could significantly delay or prevent the achievement of our business objectives.

Failure to attract and retain qualified personnel could put us at a competitive disadvantage and prevent us from effectively growing our business.

Our future success depends, in part, on our ability to continue to attract and retain highly skilled personnel. There is substantial competition for experienced management,
technical and sales personnel in the chip equipment industry. If qualified personnel become scarce or difficult to attract or retain for compensation-related or other reasons, we
could experience higher labor, recruiting or training costs. New hires may require significant training and time before they achieve full productivity and may not become as
productive as we expect. If we are unable to retain and motivate our existing employees and attract qualified personnel to fill key positions, we may experience inadequate
levels of staffing to develop and market our products and perform services for our customers, which could have a negative effect on our operating results.

Our ability to utilize certain U.S. and state net operating loss carryforwards may be limited under applicable tax laws.

As of December 31, 2020, we had net operating loss carryforward amounts, or NOLs, of $45.0 million for U.S. federal income tax purposes and $545,000 for U.S. state
income tax purposes.  As of December 31, 2019, we had net operating loss carryforward amounts, or NOLs, of $12.2 million for U.S. federal income tax purposes and $559,
000 for U.S. state income tax purposes. The federal and state NOLs will expire at various dates in the future.

Utilization of these NOLs could be subject to a substantial annual limitation if the ownership change limitations under U.S. Internal Revenue Code Sections 382 and 383 and
similar  U.S.  state  provisions  are  triggered  by  changes  in  the  ownership  of  our  capital  stock.  Such  an  annual  limitation  would  result  in  the  expiration  of  the  NOLs  before
utilization. Our existing NOLs may be subject to limitations arising from previous ownership changes, including in connection with our initial public offering and concurrent
private placement in November 2017, our follow on public offering in August 2019, and any future equity issuances. Future changes in our stock ownership, some of which
are outside of our control, could result in an ownership change. Regulatory changes, such as suspensions on the use of NOLs, or other unforeseen reasons, may cause our
existing NOLs to expire or otherwise become unavailable to offset future income tax liabilities. Additionally, U.S. state NOLs generated in one state cannot be used to offset
income generated in another U.S. state. For these reasons, we may be limited in our ability to realize tax benefits from the use of our NOLs, even if our profitability would
otherwise allow for it.

Acquisitions that we pursue in the future, whether or not consummated, could result in other operating and financial difficulties.

In the future we may seek to acquire additional product lines, technologies or businesses in an effort to increase our growth, enhance our ability to compete, complement our
product  offerings,  enter  new  and  adjacent  markets,  obtain  access  to  additional  technical  resources,  enhance  our  intellectual  property  rights  or  pursue  other  competitive
opportunities.  We  may  also  make  investments  in  certain  key  suppliers  to  align  our  interests  with  such  suppliers.  If  we  seek  acquisitions,  we  may  not  be  able  to  identify
suitable  acquisition  candidates  at  prices  we  consider  appropriate.  We  cannot  readily  predict  the  timing  or  size  of  our  future  acquisitions,  or  the  success  of  any  future
acquisitions.

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To the extent that we consummate acquisitions or investments, we may face financial risks as a result, including increased costs associated with merged or acquired
operations, increased indebtedness, economic dilution to gross and operating profit and earnings per share, or unanticipated costs and liabilities. Acquisitions may involve
additional risks, including:
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the acquired product lines, technologies or businesses may not improve our financial and strategic position as planned;
we may determine we have overpaid for the product lines, technologies or businesses, or that the economic conditions underlying our acquisition have changed;
we may have difficulty integrating the operations and personnel of the acquired company;
we  may  have  difficulty  retaining  the  employees  with  the  technical  skills  needed  to  enhance  and  provide  services  with  respect  to  the  acquired  product  lines  or
technologies;
the acquisition may be viewed negatively by customers, employees, suppliers, financial markets or investors;
we may have difficulty incorporating the acquired product lines or technologies with our existing technologies;
we may encounter a competitive response, including price competition or intellectual property litigation;
we may encounter difficulties related to required CFIUS approval (see also “—Regulatory and Litigation Risks—Certain of our investments may be subject to review
by and approval from CFIUS, which may prevent us from taking advantage of investment opportunities that would otherwise be advantageous to our stockholders”);
we may become a party to product liability or intellectual property infringement claims as a result of our sale of the acquired company’s products;
we may incur one-time write-offs, such as acquired in-process research and development costs, and restructuring charges;
we may acquire goodwill and other intangible assets that are subject to impairment tests, which could result in future impairment charges;
our ongoing business and management’s attention may be disrupted or diverted by transition or integration issues and the complexity of managing geographically or
culturally diverse enterprises; and
our due diligence process may fail to identify significant existing issues with the target business.

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From  time  to  time,  we  may  enter  into  negotiations  for  acquisitions  or  investments  that  are  not  ultimately  consummated.  These  negotiations  could  result  in  significant
diversion of management time, as well as substantial out-of-pocket costs, any of which could have a material adverse effect on our business, operating results and financial
condition.

Future declines in the semiconductor industry, and the overall world economic conditions on which the industry is significantly dependent, could have a material adverse
impact on our results of operations and financial condition.

Our business depends on the capital equipment expenditures of chip manufacturers, which in turn depend on the current and anticipated market demand for integrated circuits.
With the consolidation of customers within the industry, the chip capital equipment market may experience rapid changes in demand driven both by changes in the market
generally  and  the  plans  and  requirements  of  particular  customers.  Global  economic  and  business  conditions,  which  are  often  unpredictable,  have  historically  impacted
customer  demand  for  our  products  and  normal  commercial  relationships  with  our  customers,  suppliers  and  creditors.  Additionally,  in  times  of  economic  uncertainty  our
customers’ budgets for our tools, or their ability to access credit to purchase them, could be adversely affected. This would limit their ability to purchase our products and
services. As a result, economic downturns could cause material adverse changes to our results of operations and financial condition including:
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a decline in demand for our products;
an increase in reserves on accounts receivable due to our customers’ inability to pay us;
an increase in reserves on inventory balances due to excess or obsolete inventory as a result of our inability to sell such inventory;
valuation allowances on deferred tax assets;
restructuring charges;
asset impairments including the potential impairment of goodwill and other intangible assets;
a decline in the value of our investments;
exposure to claims from our suppliers for payment on inventory that is ordered in anticipation of customer purchases that do not come to fruition;
a decline in the value of certain facilities we lease to less than our residual value guarantee with the lessor; and
challenges maintaining reliable and uninterrupted sources of supply.

Fluctuating levels of investment by chip manufacturers may materially affect our aggregate shipments, revenue, operating results and earnings. Where appropriate, we will
attempt  to  respond  to  these  fluctuations  with  cost  management  programs  aimed  at  aligning  our  expenditures  with  anticipated  revenue  streams,  which  could  result  in
restructuring charges. Even during periods of reduced revenues, we must continue to invest in research and development and maintain extensive ongoing worldwide customer
service and support capabilities to remain competitive, which may temporarily harm our profitability and other financial results.

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We conduct substantially all of our operations outside the United States and face risks associated with conducting business in foreign markets.

Substantially all of our sales in 2020, 2019 and 2018 were made to customers outside the United States. Our manufacturing center has been located in Shanghai since 2006
and substantially all of our operations are located in the PRC. We expect that all of our significant activities will remain outside the United States in the future. We are subject
to a number of risks associated with our international business activities, including:
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imposition of, or adverse changes in, foreign laws or regulatory requirements, such as work stoppages and travel restrictions imposed in connection with the COVID-
19 pandemic;
the need to comply with the import laws and regulations of various foreign jurisdictions, including a range of U.S. import laws;
potentially adverse tax consequences, including withholding tax rules that may limit the repatriation of our earnings, and higher effective income tax rates in foreign
countries where we conduct business;
competition from local suppliers with which potential customers may prefer to do business;
seasonal reduction in business activity, such as during the Lunar New Year in parts of Asia and in other periods in various individual countries;
increased exposure to foreign currency exchange rates;
reduced protection for intellectual property;
longer sales cycles and reliance on indirect sales in certain regions;
increased length of time for shipping and acceptance of our products;
greater difficulty in responding to customer requests for maintenance and spare parts on a timely basis;
greater difficulty in enforcing contracts and accounts receivable collection and longer collection periods;
difficulties in staffing and managing foreign operations and the increased travel, infrastructure and legal and compliance costs associated with multiple international
locations;
heightened risk of unfair or corrupt business practices in certain geographies and of improper or fraudulent sales arrangements that may impact financial results and
result in restatements of, or irregularities in, our consolidated financial statements; and
general  economic  conditions,  geopolitical  events  or  natural  disasters  in  countries  where  we  conduct  our  operations  or  where  our  customers  are  located,  including
political unrest, war, acts of terrorism or responses to such events.

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In particular, the Asian market is extremely competitive, and chip manufacturers may be aggressive in seeking price concessions from suppliers, including chip equipment
manufacturers.

We may not be successful in developing and implementing policies and strategies that will be effective in managing these risks in each country in which we do business. Our
failure to manage these risks successfully could adversely affect our business, operating results and financial condition.

Fluctuation in foreign currency exchange rates may adversely affect our results of operations and financial position.

Our results of operations and financial position could be adversely affected as a result of fluctuations in foreign currency exchange rates. Although our financial statements
are denominated in U.S. dollars, a sizable portion of our costs are denominated in other currencies, principally the Chinese Renminbi and, to a lesser extent, the South Korean
Won.  Because  many  of  our  raw  material  purchases  are  denominated  in  Renminbi  while  the  majority  of  the  purchase  orders  we  receive  are  denominated  in  U.S.  dollars,
exchange rates have a significant effect on our gross margin. We have not engaged in any foreign currency exchange hedging transactions to date, and any strategies that we
may use in the future to reduce the adverse impact of fluctuations in foreign currency exchange rates may not be successful. Our foreign currency exposure with respect to
assets and liabilities for which we do not have hedging arrangements could have a material impact on our results of operations in periods when the U.S. dollar significantly
fluctuates in relation to unhedged non-U.S. currencies in which we transact business.

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Regulatory Risks

Changes in government trade policies could limit the demand for our tools and increase the cost of our tools.

General trade tensions between the United States and the PRC escalated beginning in 2018. In each of July, August and September 2018, June and September 2019, and
February  2020,  the  U.S.  government  imposed  a  round  of  new  or  higher  tariffs  on  specified  imported  products  originating  from  the  PRC  in  response  to  what  the  U.S.
government  characterizes  as  unfair  trade  practices.  The  PRC  government  responded  to  each  of  these  rounds  of  U.S.  tariff  changes  by  imposing  new  or  higher  tariffs  on
specified products imported from the United States. Higher duties on existing tariffs and further rounds of tariffs have been announced or threatened by U.S. and PRC leaders.

The imposition of tariffs by the U.S. and PRC governments and the surrounding economic uncertainty may negatively impact the semiconductor industry, including reducing
the demand of fabricators for capital equipment such as our tools. Further changes in trade policy, tariffs, additional taxes, restrictions on exports or other trade barriers, or
restrictions on supplies, equipment, and raw materials including rare earth minerals, may limit the ability of our customers to manufacture or sell semiconductors or to make
the  manufacture  or  sale  of  semiconductors  more  expensive  and  less  profitable,  which  could  lead  those  customers  to  fabricate  fewer  semiconductors  and  to  invest  less  in
capital equipment such as our tools. In addition, if the PRC were to impose additional tariffs on raw materials, subsystems or other supplies that we source from the United
States, our cost for those supplies would increase. As a result of any of the foregoing events, the imposition or new or additional tariffs may limit our ability to manufacture
tools, increase our selling and/or manufacturing costs, decrease margins, or inhibit our ability to sell tools or to purchase necessary equipment and supplies, which could have
a material adverse effect on our business, results of operations, or financial conditions.

Our ability to sell our tools to Chinese customers may be restricted by regulatory actions.

The  Bureau  of  Industry  and  Security  of  the  U.S.  Department  of  Commerce,  or  BIS,  recently  has  imposed  and  may  continue  to  impose  additional  restrictions,  including
licensing requirements, under the Export Administration Regulations, or EAR, with respect to certain PRC companies that impact the supply of U.S. products and certain
non‑U.S. products incorporating U.S. content, or that are manufactured using certain U.S. technology or software, to such companies and the sourcing of U.S. items by non-
U.S. companies for use in manufacturing products for such companies.  For example, BIS has recently added a number of PRC entities to the Entity List under the EAR
which means that any items subject to the EAR, including certain non-U.S. produced products with U.S. content, require a BIS license for supply to the listed entities. Among
other companies, in December 2020, SMIC, one of the largest chip manufacturers in the PRC, was added to the Entity List.  Challenges faced by SMIC and its key suppliers
as a result of the listing could indirectly impact SMIC’s demand for, or our ability to supply, our products.

We cannot be certain what additional actions the U.S. government may take with respect to PRC entities, and whether such actions will impact our relationships with our
PRC-based customers, including changes to the Entity List restrictions, other export regulations, tariffs or other trade restrictions, or whether the PRC government may take
any actions in response to U.S. government action that may adversely affect our ability to do business with our PRC-based customers. Even in the absence of new restrictions,
tariffs  or  trade  actions  imposed  by  the  U.S.  or  PRC  government,  our  PRC-based  customers  may  take  actions  to  reduce  dependence  on  the  supply  of  products  subject  to
potential  U.S.  trade  regulations,  including  our  tools,  which  could  have  a  material  adverse  effect  on  our  operating  results.  We  are  unable  to  predict  the  duration  of  the
restrictions imposed by the U.S. government or of any additional governmental actions that may impact our relationships with our PRC-based customers, any of which could
have a long-term adverse effect on our business, operating results and financial condition.

Changes in political and economic policies of the PRC government may materially and adversely affect our business, financial condition and results of operations and
may result in our inability to sustain our growth and expansion strategies.

Substantially all of our operations are conducted in the PRC, and a substantial majority of our revenue is sourced from the PRC. Accordingly, our financial condition and
results of operations are affected to a significant extent by economics, political and legal developments in the PRC.

The  Chinese  economy  differs  from  the  economies  of  most  developed  countries  in  many  respects,  including  the  extent  of  government  involvement,  level  of  development,
growth rate, and control of foreign exchange and allocation of resources. Although the PRC government has implemented measures emphasizing the utilization of market
forces  for  economic  reform,  the  reduction  of  state  ownership  of  productive  assets  and  the  establishment  of  improved  corporate  governance  in  business  enterprises,  a
substantial  portion  of  productive  assets  in  the  PRC  are  still  owned  by  the  government.  In  addition,  the  PRC  government  continues  to  play  a  significant  role  in  regulating
industry  development  by  imposing  industrial  policies.  The  PRC  government  also  exercises  significant  control  over  economic  growth  in  the  PRC  by  allocating  resources,
controlling payment of foreign currency-denominated obligations, setting monetary policy, regulating financial services and institutions, and providing preferential treatment
to particular industries or companies.

While  the  PRC  economy  has  experienced  significant  growth  in  the  past  three  decades,  growth  has  been  uneven,  both  geographically  and  among  various  sectors  of  the
economy. The PRC government has implemented various measures to encourage economic growth and guide the allocation of resources. Some of these measures may benefit
the  overall  PRC  economy,  but  may  also  have  a  negative  effect  on  us.  Our  financial  condition  and  results  of  operation  could  be  materially  and  adversely  affected  by
government control over capital investments or changes in tax regulations that are applicable to us. In the past the PRC government has implemented measures to control the
pace of economic growth, and similar measures in the future may cause decreased economic activity, which in turn could lead to a reduction in demand for our products and
consequently have a material adverse effect on our businesses, financial condition and results of operations.

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Although the PRC government has been implementing policies to develop an independent domestic semiconductor industry supply chain, there is no guaranteed time frame in
which these initiatives will be implemented. We cannot guarantee that the implementation of these policies will result in additional revenue to us or that our presence in the
PRC will result in support from the PRC government. To the extent that any capital investment or other assistance from the PRC government is not provided to us, it could be
used to promote the products and technologies of our competitors, which could adversely affect our business, operating results and financial condition.

Changes in political and economic policies with respect to the PRC may make it difficult for us to release the benefit of our investments.

On November 12, 2020, then-President Trump issued an executive order, or the Order, establishing a new sanctions program designed to prohibit U.S. persons from entering
into transactions in certain publicly traded securities, as well as derivatives and securities designed to provide investment exposure to such securities, of any “Communist
Chinese  military  company,”  or  CCMC,  as  designated  by  the  U.S.  Department  of  Defense,  or  DOD,  or  the  U.S.  Secretary  of  the  Treasury.    Continued  ownership  of  such
securities by U.S. persons would be prohibited after a one-year divestment period from the time of designation of the issuer. A number of PRC issuers have been designated
under this program and more could be added.

On  December  3,  2020,  SMIC  was  designated  as  a  CCMC  by  the  DOD.  Consequently,  ACM  Shanghai  could  be  required  to  divest  its  ownership  of  SMIC  shares  prior  to
December 3, 2021. If ACM Shanghai is not able to sell its shares of SMIC prior to December 3, 2020, ACM Shanghai’s continued possession of SMIC securities may subject
ACM Shanghai and ACM Research to penalties. Certain implementation matters related to the scope of, and compliance with, the Order have not yet been resolved, and the
ultimate application and enforcement of the Order may change due to, among other things, the change in the U.S. Presidential administration.

In addition, we may seek to conduct business transactions with SMIC and other entities on the CCMC list in the future. Although the Order does not prohibit commercial
relations  with  CCMC  companies  other  than  the  securities  transactions  noted  above,  certain  other  export  restrictions  have  been  imposed  under  the  Export  Administration
Regulations on some CCMC companies, including SMIC. These and any similar future U.S. government restrictions on our suppliers or customers may adversely affect our
business operations in the PRC, overall company results or our financial condition.

Certain of our investments may be subject to review by and approval from CFIUS, which may prevent us from taking advantage of investment opportunities that would
otherwise be advantageous to our stockholders.

Certain of our investments may be subject to review by and approval from the U.S. Committee on Foreign Investment in the U.S., or CFIUS. In the event that CFIUS reviews
one or more of the our investments, there can be no assurances that we will be able to maintain or proceed with such investments on terms acceptable to us. Additionally,
CFIUS may seek to impose limitations on one or more such investments that may prevent us from maintaining or pursuing investment opportunities that we otherwise would
have maintained or pursued, which could adversely affect the performance of our investments and thus our overall performance. Certain of our stockholders may be non-U.S.
investors, and in the aggregate, may comprise a substantial portion of our net asset value, which may increase the risks of such limitations being imposed in connection with
investments pursued or made by us. Legislative and regulatory changes, including changes to agency practice, in the future may negatively impact our ability to realize value
from certain existing and future investments, including by limiting exit opportunities or causing us to favor buyers that we believe are less likely to require CFIUS review,
even in circumstances where other buyers may offer better terms or more consideration.

We are subject to government regulation, including import, export, economic sanctions, and anti-corruption laws and regulations, that may limit our sales opportunities,
expose us to liability and increase our costs.

Our products are subject to import and export controls in jurisdictions in which we distribute or sell our products. Import and exports control and economic sanctions laws and
regulations  include  restrictions  and  prohibitions  on  the  sale  or  supply  of  certain  products  and  on  our  transfer  of  parts,  components,  and  related  technical  information  and
know-how to certain countries, regions, governments, persons and entities.

Various  countries  regulate  the  importation  of  certain  products  through  import  permitting  and  licensing  requirements  and  have  enacted  laws  that  could  limit  our  ability  to
distribute our products. The exportation, re-exportation, transfers within foreign countries and importation of our products, including by our partners, must comply with these
laws and regulations, and any violations may result in reputational harm, government investigations and penalties, and a denial or curtailment of exporting. Complying with
export control and sanctions laws for a particular sale may be time consuming, may increase our costs, and may result in the delay or loss of sales opportunities. If we are
found to be in violation of U.S. sanctions or export control laws, or similar laws in other jurisdictions, we and the individuals working for us could incur substantial fines and
penalties.  Changes  in  export,  sanctions  or  import  laws  or  regulations  may  delay  the  introduction  and  sale  of  our  products  in  international  markets,  require  us  to  spend
resources to seek necessary government authorizations or to develop different versions of our products, or, in some cases, prevent the export or import of our products to
certain countries, regions, governments, persons or entities, which could adversely affect our business, financial condition and operating results.

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We are subject to various domestic and international anti-corruption laws, such as the U.S. Foreign Corrupt Practices Act, as well as similar anti-bribery and anti-kickback
laws and regulations. These laws and regulations generally prohibit companies and their intermediaries from offering or making improper payments to non-U.S. officials for
the purpose of obtaining, retaining or directing business. Our exposure for violating these laws and regulations increases as our international presence expands and as we
increase sales and operations in foreign jurisdictions.

Our  auditor,  as  a  registered  public  accounting  firm  operating  in  the  PRC,  is  not  permitted  to  be  inspected  by  the  Public  Company  Accounting  Oversight  Board,  and
consequently investors may be deprived of the benefits of such inspections.

BDO China Shu Lun Pan Certified Public Accountants LLP, or BDO China, is the independent registered public accounting firm that issued the audit report included in this
report in connection with our consolidated financial statements as of, and for the years ended, December 31, 2020, 2019 and 2018. BDO China, as an auditor of companies
that are traded publicly in the United States and a firm registered with the PCAOB is required by the laws of the United States to undergo regular inspections by the PCAOB
to  assess  its  compliance  with  the  laws  of  the  United  States  and  applicable  professional  standards.  BDO  China  is  located  in  the  PRC.  The  PCAOB  is  currently  unable  to
conduct  inspections  of  auditors  in  the  PRC  without  the  approval  of  PRC  authorities,  and  therefore  BDO  China,  like  other  independent  registered  public  accounting  firms
operating in the PRC, is currently not inspected by the PCAOB.

In  May  2013  the  PCAOB  announced  that  it  had  entered  into  a  Memorandum  of  Understanding  on  Enforcement  Cooperation  with  the  China  Securities  Regulatory
Commission and the Ministry of Finance of China pursuant to which the Ministry of Finance established a cooperative framework between the parties for the production and
exchange of audit documents relevant to investigations in both the PRC and the United States. More specifically, the Memorandum of Understanding provides a mechanism
for the parties to request and receive from each other assistance in obtaining documents and information in furtherance of their investigative duties. In addition the PCAOB is
engaged in continuing discussions with the China Securities Regulatory Commission and the Ministry of Finance to permit joint inspections in the PRC of audit firms that are
registered with the PCAOB and to audit PRC companies whose securities are listed on U.S. stock exchanges.

The PCAOB’s inspections of firms outside of the PRC have identified deficiencies in audit procedures and quality control procedures, and such deficiencies may be addressed
as part of the inspection process to improve future audit quality. The inability of the PCAOB to conduct inspections of BDO China with respect to its audit of our consolidated
financial statements may make it more difficult for investors to evaluate BDO China’s audit procedures and quality control procedures by depriving investors of potential
benefits from improvements that could have been facilitated by PCAOB inspections.

We could be adversely affected if proposed legislation is adopted regarding improved access to audit and other information and audit inspections of accounting firms,
including registered public accounting firms operating in the PRC such as our auditor, or if Nasdaq’s proposals requiring additional criteria to companies operating in
“restrictive markets” become effective.

BDO China, our independent registered public accounting firm, is not inspected by the PCAOB, as described in the preceding risk factor. ACM is one of 283 companies
named  in  PCAOB’s  list  of  “Public  Companies  that  are  Audit  Clients  of  PCAOB-Registered  Firms  from  Non-U.S.  Jurisdictions  where  the  PCAOB  is  Denied  Access  to
Conduct Inspections.”

On  April  21,  2020,  the  SEC  and  the  PCAOB  issued  a  joint  statement  highlighting  the  significant  disclosure,  financial  reporting  and  other  risks  associated  with  emerging
market investments, including the PCAOB’s continued inability to inspect audit work papers of auditors in the PRC. This statement is the latest in a series of recent proposed
actions:

●

In December 2018 the SEC and the PCAOB issued a joint statement highlighting continued challenges faced by U.S. regulators in their oversight of financial statement
audits of U.S.-listed reporting companies with significant operations in the PRC.

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●

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In June 2019 a bipartisan group of lawmakers introduced bills in both houses of the U.S. Congress that, if passed, would have required the SEC to maintain a list of
foreign reporting companies for which the PCAOB is not able to inspect or investigate an auditor report issued by a foreign public accounting firm. The proposed
Ensuring Quality Information and Transparency for Abroad-Based Listings on our Exchanges Act, or EQUITABLE Act, would have prescribed increased disclosure
requirements for these reporting companies and, beginning in 2025, provided for the delisting from U.S. stock exchanges of reporting companies included on the SEC’s
list for three consecutive years.

In  May  2020  the  U.S.  Senate  approved  a  bill  entitled  the  “Holding  Foreign  Companies  Accountable  Act”,  which,  if  also  approved  by  the  U.S.  House  of
Representatives, would allow the SEC to delist the stocks of foreign companies listed on US exchanges that are audited by firms not allowed to be inspected by the
PCAOB.

In May 2020 Nasdaq requested approval by the SEC of proposals that would impact companies with businesses principally administered in jurisdictions defined as
“restrictive markets,” which likely would encompass the PRC. These proposals contemplate, among other things, the application of more stringent listing criteria if a
listed company’s auditor does not demonstrate a PCAOB inspection record (as is the case with our auditor), employee expertise and training, or geographic or other
resources sufficient to perform the company’s audit satisfactorily. Examples of more stringent criteria that Nasdaq could apply include requiring: (a) higher levels of
equity,  assets,  earnings  or  liquidity  than  are  otherwise  needed;  (b)  that  any  public  offering  to  be  underwritten  on  a  firm  commitment  basis  (involving  more  due
diligence by the underwriter); and (c) the imposition of lock-up restrictions on directors and officers to allow market mechanisms to determine an appropriate price for
shares before the insiders could sell. Alternatively, Nasdaq could deny continued listing to a company.

It remains unclear what further actions the SEC, the PCAOB or Nasdaq will take to address these issues and what impact those actions will have on US companies that have
significant operations in the PRC and have securities listed on a U.S. stock exchange. Any such actions could materially affect our operations and stock price, including by
resulting in our being de-listed from Nasdaq or being required to engage a new audit firm, which would require significant expense and management time.

Risks Related to Our STAR Market Listing

If  we  are  unable  to  implement  our  strategy  to  expand  our  PRC  operations  by  completing  an  initial  public  offering  and  listing  on  the  STAR  Market,  our  ability  to
strengthen our market position and operations in the PRC, including our ability to increase our revenues and augment our product line, could be materially impaired.

In June 2019 we announced plans to complete over the following three years the STAR Listing, which consists of a listing, of shares of ACM Shanghai on the Shanghai Stock
Exchange’s STAR Market, and the STAR IPO, which would be a concurrent initial public offering of ACM Shanghai shares in the PRC. ACM Shanghai is our principal
operating  company  and,  prior  to  the  STAR  Listing  process,  was  a  wholly  owned  subsidiary  of  ACM  Research.  Following  the  STAR  Listing  and  the  STAR  IPO,  ACM
Shanghai will be a majority owned subsidiary of ACM Research. We may not be able to complete the STAR Listing and the STAR IPO for a number of reasons, many of
which are outside our control. ACM Shanghai must succeed in obtaining PRC governmental approvals required to permit the STAR Listing and the STAR IPO, and one or
more  of  those  approvals  may  be  denied,  or  significantly  delayed,  by  the  PRC  regulators  for  reasons  outside  our  control  or  unknown  to  us.  Similarly,  the  STAR  Listing
application may be denied or delayed by the Shanghai Stock Exchange in its discretion. See also “—Risks Related to the COVID-19 Outbreak—The COVID‑19 outbreak
could negatively impact our currently planned projects and investments in the PRC, including the STAR IPO.”

If  we  are  unable  to  complete  the  STAR  Listing  and  the  STAR  IPO,  we  may  not  otherwise  be  able  to  realize  the  advantages  to  our  PRC  operations  contemplated  by  our
business strategy, including improving our ability to market our products, building our brand in the PRC markets, assisting our sales efforts to new customers and encouraging
additional  purchases  of  our  tools  by  existing  customers.  Because  it  may  be  more  than  three  years  before  we  know  whether  the  STAR  Listing  and  the  STAR  IPO  will  be
completed, we may, in the interim, forego or postpone other alternative actions to strengthen our market position and operations in the PRC.

PRC companies are critical to the global semiconductor industry, and our current business is substantially concentrated in the PRC market. Our inability to build, or any delay
in growing, our PRC-based operations over the next three years would materially and adversely limit our operations and operating results, including our revenue growth. In
addition, during that time, the process underlying the STAR Listing and the STAR IPO could result in significant diversion of management time as well as substantial out-of-
pocket costs, which could further impair our ability to expand our business.

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Even if we complete the STAR Listing and the STAR IPO, we may not achieve the results contemplated by our business strategy and our strategy for growth in the PRC
may not result in increases in the price of Class A common stock.

We cannot assure you that, even if the STAR Listing and the STAR IPO are completed, we will realize any or all of our anticipated benefits of the STAR Listing and the
STAR IPO. Our completion of the STAR Listing and the STAR IPO may not have the anticipated effects of including the strengthening of our market position and operations
in the PRC. If the STAR Listing and the STAR IPO are completed, ACM Shanghai will have broad discretion in the use of the proceeds from the initial sales of shares to
investors and the proceeds from the STAR IPO, and it may not spend or invest those proceeds in a manner that results in our operating success or with which ACM Research
stockholders agree. Our failure to successfully leverage the completion of the STAR Listing and the STAR IPO to expand our PRC business could result in a decrease in the
price of the Class A common stock, and we cannot assure you that the success of ACM Shanghai will have a an attendant positive effect on the price of the Class A common
stock.

Completion of the STAR Listing and the STAR IPO may not occur until 2022 or later. In the interim, ACM Shanghai may require additional funding from ACM Research in
order to proceed to augment its PRC operations, and we cannot give any assurance that such capital will be available from ACM Research at all in terms acceptable to us. Any
such inability to obtain funds from ACM Research or other sources may impair the ability of ACM Shanghai to grow its operations, which could have a material adverse
effect on our consolidated operating results and on the price of the Class A common stock.

ACM Shanghai’s status as a publicly traded company that is controlled, but less than wholly owned, by ACM Research could have an adverse effect on us.

As the result of actions being taken in connection with the STAR Listing and the STAR IPO, ACM Shanghai will no longer be a wholly owned subsidiary of ACM Research,
and the interests of ACM Shanghai may diverge from the interests of ACM Research and its other subsidiaries in the future. We may face conflicts of interest in managing,
financing  or  engaging  in  transactions  with  ACM  Shanghai,  or  allocating  business  opportunities  between  our  subsidiaries,  including  future  arrangements  for  operating
subsidiaries other than ACM Shanghai to license and use our intellectual property. Substantially all of our intellectual property has been developed in the PRC and is owned
by  ACM  Shanghai.  As  we  expand  our  global  operations  through  operating  subsidiaries  outside  of  the  PRC,  those  operating  subsidiaries  may  need  to  license  intellectual
property from ACM Shanghai in order to operate, and there can be no assurance that conflicts of interest will not preclude those operating subsidiaries from licensing the
required intellectual property from ACM Shanghai on reasonable terms or at all.

ACM Research will retain majority ownership of ACM Shanghai after the STAR IPO, but ACM Shanghai will be managed by a separate board of directors and officers and
those directors and officers will owe fiduciary duties to the various stakeholders of ACM Shanghai, including shareholders other than ACM Research. In the operation of
ACM Shanghai’s business, there may be situations that arise whereby the directors and officers of ACM Shanghai, in the exercise of their fiduciary duties, take actions that
may be contrary to the best interests of ACM Research.

In the future, ACM Shanghai may issue options, restricted shares and other forms of share-based compensation to its directors, officers and employees, which could dilute
ACM Research’s ownership in ACM Shanghai. In addition, ACM Shanghai may engage in capital raising activities in the future that could further dilute ACM Research’s
ownership interest.

If the STAR Listing and the STAR IPO are completed, ACM Research and ACM Shanghai both will be public reporting companies but each will be subject to separate,
and potentially inconsistent, accounting and disclosure requirements, which may lead to investor confusion or uncertainty that could cause decreased demand for, or
fluctuations in the price of, one or both of the companies’ publicly traded shares.

If ACM Shanghai completes the STAR Listing and the STAR IPO, it will be subject to accounting, disclosure and other regulatory requirements of the STAR Market. At the
same time, ACM Research will remain subject to accounting, disclosure and other regulatory requirements of the SEC and the Nasdaq Global Market, or Nasdaq. As a result,
ACM  Research  and  ACM  Shanghai  periodically  will  disclose  information  simultaneously  pursuant  to  differing  laws  and  regulations.  Even  though  substantially  all  of  the
operations of ACM Research are currently conducted through ACM Shanghai, the information disclosed by the two companies will differ, and may differ materially from
time  to  time,  due  to  the  distinct,  and  potentially  inconsistent,  accounting  standards  applicable  to  the  two  companies  and  disclosure  requirements  imposed  by  securities
regulatory authorities, as well as differences in language, culture and expression habit, in composition of investors in the United States and PRC, and in the capital markets of
the United States and the PRC.

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Differing disclosures could lead to confusion or uncertainty among investors in the publicly traded shares of one or both companies. Differences between the price of ACM
Shanghai shares on the STAR Market and the price of ACM Research Class A common stock on Nasdaq could lead to increased volatility, as some investors seek to arbitrage
price differences. Moreover, such volatility could be exacerbated by the fact that ACM Shanghai shares currently represent substantially all of the assets of ACM Research.

Risks Related to Our Intellectual Property and Data Security

Our success depends on our ability to protect our intellectual property, including our SAPS, TEBO, Tahoe, SFP and ECP technologies.

Our commercial success depends in part on our ability to obtain and maintain patent and trade secret protection for our intellectual property, including our SAPS, TEBO,
Tahoe, SFP and ECP technologies and the design of our Ultra C equipment, as well as our ability to operate without infringing upon the proprietary rights of others. There can
be no assurance that our patent applications will result in additional patents being issued or that issued patents will afford sufficient protection against competitors with similar
technology, nor can there be any assurance that the patents issued will not be infringed, designed around, or invalidated by third parties. Even issued patents may later be
found unenforceable or may be modified or revoked in proceedings instituted by third parties before various patent offices or in courts. The degree of future protection for our
intellectual property is uncertain. Only limited protection may be available and may not adequately protect our rights or permit us to gain or keep any competitive advantage.
This failure to properly protect the intellectual property rights relating to our products and technologies could have a material adverse effect on our financial condition and
results of operations.

The  patent  application  process  is  subject  to  numerous  risks  and  uncertainties,  and  there  can  be  no  assurance  that  we  or  any  of  our  future  development  partners  will  be
successful in protecting our product candidates by obtaining and defending patents. These risks and uncertainties include the following:
●

The U.S. Patent and Trademark Office and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payment
and  other  provisions  during  the  patent  process.  There  are  situations  in  which  noncompliance  can  result  in  abandonment  or  lapse  of  a  patent  or  patent  application,
resulting in partial or complete loss of patent rights in the relevant jurisdiction. In such an event, competitors might be able to enter the market earlier than would
otherwise have been the case.
Patent applications may not result in any patents being issued.
Patents that may be issued may be challenged, invalidated, modified, revoked, circumvented, found to be unenforceable or otherwise may not provide any competitive
advantage.
Our  competitors  may  seek  or  may  have  already  obtained  patents  that  will  limit,  interfere  with,  or  eliminate  our  ability  to  make,  use  and  sell  our  potential  product
candidates.
The  PRC  and  other  countries  other  than  the  United  States  may  have  patent  laws  less  favorable  to  patentees  than  those  upheld  by  U.S.  courts,  allowing  foreign
competitors a better opportunity to create, develop and market competing product candidates.

●
●

●

●

In addition, we rely on the protection of our trade secrets and know-how. Although we have taken steps to protect our trade secrets and unpatented know-how, including
entering into confidentiality and non-disclosure agreements with third parties and confidential information and inventions agreements with key employees, customers and
suppliers, other parties may still obtain this information or may come upon this information independently. If any of these events occurs or if we otherwise lose protection for
our trade secrets or proprietary know-how, the value of this information may be greatly reduced.

We may be involved in lawsuits to protect or enforce our patents, which could be expensive, time consuming and unsuccessful.

Competitors may infringe upon our patents. If our technologies are adopted, we believe that competitors may try to match our technologies and tools in order to compete. To
counter infringement or unauthorized use, we may be required to file infringement claims, which can be expensive and time consuming. An adverse result in any litigation or
defense proceedings, including our current suits, could put one or more of our patents at risk of being invalidated, found to be unenforceable or interpreted narrowly and could
put our patent applications at risk of not issuing. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there
is  a  risk  that  some  of  our  confidential  information  could  be  compromised  by  disclosure  during  litigation.  In  addition,  any  future  patent  litigation,  interference  or  other
administrative proceedings will result in additional expense and distraction of our personnel. Most of our competitors are larger than we are and have substantially greater
resources, and they therefore are likely to be able to sustain the costs of complex patent litigation longer than we could. An adverse outcome in such litigation or proceedings
may expose us to loss of our proprietary position.

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We may not be able to protect our intellectual property rights throughout the world, including the PRC, which could materially, negatively affect our business.

Filing,  prosecuting  and  defending  patents  on  our  products  or  proprietary  technologies  in  all  countries  throughout  the  world  would  be  prohibitively  expensive,  and  our
intellectual property rights in some countries outside the United States, including the PRC, can be less extensive than those in the United States. In addition, the laws of some
foreign  countries  do  not  protect  intellectual  property  rights  to  the  same  extent  as  federal  and  state  laws  in  the  United  States.  Consequently,  competitors  may  use  our
technologies in jurisdictions where we have not obtained patent protection to develop their own products and may export otherwise infringing products to territories where we
have  patent  protection  but  enforcement  is  not  as  strong  as  that  in  the  United  States.  These  products  may  compete  with  our  products,  and  our  patents  or  other  intellectual
property rights may not be effective or sufficient to prevent them from competing.

The  significant  majority  of  our  intellectual  property  has  been  developed  in  the  PRC  and  is  owned  by  ACM  Shanghai.  Implementation  and  enforcement  of  intellectual
property-related laws in the PRC has historically been lacking due primarily to ambiguities in PRC intellectual property law. Accordingly, protection of intellectual property
and  proprietary  rights  in  the  PRC  may  not  be  as  effective  as  in  the  United  States  or  other  countries.  As  a  result,  third  parties  could  illegally  use  the  technologies  and
proprietary  processes  that  we  have  developed  and  compete  with  us,  which  could  negatively  affect  any  competitive  advantage  we  enjoy,  dilute  our  brand  and  harm  our
operating  results.  Litigation  may  be  necessary  to  enforce  our  intellectual  property  rights,  and  given  the  relative  unpredictability  of  the  PRC’s  legal  system  and  potential
difficulties enforcing a court judgment in the PRC, there is no guarantee litigation would result in an outcome favorable to us.

Many  companies  have  encountered  significant  problems  in  protecting  and  defending  intellectual  property  rights  in  foreign  jurisdictions.  The  legal  systems  of  certain
countries, particularly certain developing countries, do not favor the enforcement of patents and other intellectual property protection, which could make it difficult for us to
stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign
jurisdictions  could  result  in  substantial  costs  and  divert  our  efforts  and  attention  from  other  aspects  of  our  business,  could  put  our  patents  at  risk  of  being  invalidated  or
interpreted narrowly and our patent applications at risk of not issuing, and could provoke third parties to assert claims against us. We may not prevail in any lawsuits that we
initiate, and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around
the world may be inadequate to obtain a significant commercial advantage from the intellectual property that we develop or license and may adversely affect our business.

If we are sued for infringing intellectual property rights of third parties, it will be costly and time consuming, and an unfavorable outcome in that litigation could have a
material adverse effect on our business.

Our success depends on our ability to develop, manufacture, market and sell our products without infringing upon the proprietary rights of third parties. Numerous U.S. and
foreign-issued patents and pending patent applications owned by third parties exist in the fields in which we are developing products, some of which may contain claims that
overlap with the subject matter of our intellectual property. A third party has claimed in the past, and others may claim in the future, that our technology or products infringe
their intellectual property. In some instances third parties may initiate litigation against us in an effort to prevent us from using our technology in alleged violation of their
intellectual property rights. The risk of such a lawsuit will likely increase as our size and the number and scope of our products increase and as our geographic presence and
market share expand.

Any potential intellectual property claims or litigation commenced against us could:
be time consuming and expensive to defend, whether or not meritorious;
●
force us to stop selling products or using technology that allegedly infringes the third party’s intellectual property rights;
●
delay shipments of our products;
●
require us to pay damages or settlement fees to the party claiming infringement;
●
require us to attempt to obtain a license to the relevant intellectual property, which may not be available on reasonable terms or at all;
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force us to attempt to redesign products that contain the allegedly infringing technology, which could be expensive or which we may be unable to do;
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require  us  to  indemnify  our  customers,  suppliers  or  other  third  parties  for  any  loss  caused  by  their  use  of  our  technology  that  allegedly  infringes  the  third  party’s
●
intellectual property rights; or
divert the attention of our technical and managerial resources.

●

Because patent applications can take many years to issue, there may be currently pending applications, unknown to us, that may later result in issued patents upon which our
products or technologies may infringe. Similarly, there may be issued patents relevant to our products of which we are not aware.

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Breaches of our cybersecurity systems could degrade our ability to conduct our business operations and deliver products to our customers, result in data losses and the
theft of our intellectual property, damage our reputation, and require us to incur significant additional costs to maintain the security of our networks and data.

We  increasingly  depend  upon  our  information  technology  systems  to  conduct  our  business  operations,  ranging  from  our  internal  operations  and  product  development  and
manufacturing activities to our marketing and sales efforts and communications with our customers and business partners. Computer programmers may attempt to penetrate
our  network  security,  or  that  of  our  website,  and  misappropriate  our  proprietary  information  or  cause  interruptions  of  our  service.  Because  the  techniques  used  by  such
computer programmers to access or sabotage networks change frequently and may not be recognized until launched against a target, we may be unable to anticipate these
techniques. We have also outsourced a number of our business functions to third-party contractors, including our manufacturers, and our business operations also depend, in
part, on the success of our contractors’ own cybersecurity measures. Additionally, we face potential heightened cybersecurity risks during the COVID-19 pandemic as our
level of dependence on our IT networks and related systems increases, stemming from employees working remotely, and the number of malware campaigns and phishing
attacks preying on the uncertainties surrounding the COVID‑19 pandemic increases. These heightened cybersecurity risks may increase our vulnerability to cyber-attacks and
cause  disruptions  to  our  internal  control  procedures.  Accordingly,  if  our  cybersecurity  systems  and  those  of  our  contractors  fail  to  protect  against  unauthorized  access,
sophisticated cyberattacks and the mishandling of data by our employees and contractors, our ability to conduct our business effectively could be damaged in a number of
ways, including sensitive data regarding our employees or business, including intellectual property and other proprietary data, could be stolen. Should this occur, we could be
subject to significant claims for liability from our customers and regulatory actions from governmental agencies. In addition, our ability to protect our intellectual property
rights could be compromised and our reputation and competitive position could be significantly harmed. Consequently, our financial performance and results of operations
could be adversely affected.

Risks Related to the COVID‑19 Outbreak

The outbreak of COVID‑19, the coronavirus, continues both in the United States and globally, and related government and private sector responsive actions are adversely
affecting our business operations.

We have set forth below key risks from the COVID‑19 outbreak that we have identified or experienced to date. The situation continues to evolve, however, and it is impossible
to  predict  the  effect  and  ongoing  impact  of  the  COVID‑19  outbreak  on  our  business  operations  and  results.  While  the  quarantine,  social  distancing  and  other  regulatory
measures instituted or recommended in response to COVID‑19 were expected to be temporary, such measures have remained in effect, and have changed, over the last year,
and the duration of the business disruptions, and related financial impact, cannot be estimated at this time. The COVID‑19 outbreak could ultimately reduce demand for our
products and our customers’ chips and have a material adverse impact on our business, operating results and financial condition.

Substantially all of our operations are located in areas impacted by the COVID‑19 outbreak, and those operations have been, and may continue to be, adversely affected
by the COVID‑19 outbreak.

We conduct substantially all of our product development, manufacturing, support and services in the PRC, and those activities have been directly impacted by the COVID‑19
outbreak and related restrictions on transportation and public appearances. In February 2020 our ACM Shanghai headquarters were closed for an additional six days beyond
the normal Lunar New Year Holiday in accordance with Shanghai government restrictions related to the outbreak. We cannot assure you that further closures or reductions of
our PRC operations or production may not be necessary in upcoming months as the result of business interruptions arising from protective measures being taken by the PRC
and other governmental agencies or of other consequences of the COVID‑19 outbreak.

Our corporate headquarters are located in San Mateo County in the San Francisco Bay Area. In order to attempt to mitigate the COVID-19 pandemic, in March 2020 (a) the
State  of  California  declared  a  state  of  emergency  related  to  the  spread  of  COVID‑19,  (b)  the  San  Francisco  Department  of  Public  Health  announced  aggressive
recommendations to reduce the spread of the disease, (c) the health officers of six San Francisco Bay Area counties, including San Mateo County, issued shelter-in-place
orders, which (i) direct all individuals living in those counties to shelter at their places of residence (subject to limited exceptions), (ii) direct all businesses and governmental
agencies  to  cease  non-essential  operations  at  physical  locations  in  those  counties,  (iii)  prohibit  all  non-essential  gatherings  of  any  number  of  individuals,  and  (iv)  order
cessation of all non-essential travel, and (d) the Governor of California and the State Public Health Officer and Director of the California Department of Public Health ordered
all individuals living in the State of California to stay at their place of residence for an indefinite period of time (subject to limited exceptions). The effects of these types of
actions in the future may negatively impact productivity, disrupt our business and delay timelines, the magnitude of which will depend, in part, on the length and severity of
the restrictions and other limitations on our ability to conduct our business in the ordinary course.

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The prolonged and broad-based shift to a remote working environment continues to create inherent productivity, connectivity, and oversight challenges and could affect our
ability  to  enhance,  develop  and  support  existing  products  and  services,  detect  and  prevent  spam  and  problematic  content,  hold  product  sales  and  marketing  events,  and
generate  new  sales  leads,  among  others.  In  addition,  the  changed  environment  under  which  we  are  operating  could  have  an  effect  on  our  internal  controls  over  financial
reporting  as  well  as  our  ability  to  meet  a  number  of  our  compliance  requirements  in  a  timely  or  quality  manner.  Additional  and/or  extended,  governmental  lockdowns,
restrictions  or  new  regulations  could  significantly  impact  the  ability  of  our  employees  and  vendors  to  work  productively.  Governmental  restrictions  have  been  globally
inconsistent and it remains unclear when a return to worksite locations or travel will be permitted or what restrictions will be in place in those environments. As we prepare to
return our workforce in more locations back to the office in 2021, we may experience increased costs as we prepare our facilities for a safe return to work environment and
experiment with hybrid work models, in addition to potential effects on our ability to compete effectively and maintain our corporate culture.

Extended periods of interruption to our corporate, development or manufacturing facilities due to the COVID‑19 outbreak could cause us to lose revenue and market share,
which  would  depress  our  financial  performance  and  could  be  difficult  to  recapture.  Our  business  may  also  be  harmed  if  travel  to  or  from  the  PRC  or  the  United  States
continues to be restricted or inadvisable or if members of management and other employees are absent because they contract the coronavirus, they elect not to come to work
due to the illness affecting others in our office or laboratory facilities, or they are subject to quarantines or other governmentally imposed restrictions.

Our global supply chain may be materially adversely impacted due to the COVID‑19 outbreak.

We rely upon the facilities of our global suppliers with operations in the PRC, Japan, Taiwan and the United States to support our business. We source the substantial majority
of our components from Asia. The outbreak has resulted in significant governmental measures in many countries being implemented to control the spread of COVID‑19,
including restrictions on manufacturing and the movement of employees both in and out of China and within many regions of the PRC. As a result of COVID‑19 and the
measures  designed  to  contain  its  spread,  our  suppliers  may  not  have  the  materials,  capacity,  or  capability  to  supply  our  components  according  to  our  schedule  and
specifications. Further, there may be logistics issues, including our ability and our supply chain’s ability to quickly ramp up production, and transportation demands that may
cause further delays. If our suppliers’ operations are curtailed, we may need to seek alternate sources of supply, which may be more expensive. Alternate sources may not be
available or may result in delays in shipments to us from our supply chain and subsequently to our customers, each of which would affect our results of operations. While the
disruptions and restrictions on the ability to travel, quarantines and temporary closures of the facilities of our suppliers, as well as general limitations on movement in the
region, are expected to be temporary, the duration of the production and supply chain disruption, and related financial impact, cannot be estimated at this time. Should the
production and distribution closures continue for an extended period of time, the impact on our supply chain could have a material adverse effect on our results of operations
and cash flows. Business disruptions could also negatively affect the sources and availability of components and materials that are essential to the operation of our business. 
Moreover, our customers source a range of production equipment, supplies and services from other suppliers with operations around the world, and any reduction in supply
capacity at those customers’ factories due to the COVID‑19 pandemic may reduce or even halt those customers’ production and result in a decrease in the demand for our
products.

The COVID‑19 outbreak could negatively impact our currently planned projects and investments in the PRC, including the STAR IPO.

Our strategy includes a number of plans to support the growth of our core business. In June 2019 we began working toward the proposed STAR Listing and STAR IPO with
respect to shares of ACM Shanghai, and in November 2019 ACM Shanghai entered into an agreement initiating a process intended to lead to our acquisition of land rights in
the Lingang area of Shanghai where we can construct a new research and development center and factory. The extent to which COVID-19 impacts these projects will depend
on future developments that are highly uncertain and cannot be predicted. If the disruptions posed by COVID‑19 and related government measures, or other matters of global
concern, continue for an extensive period of time, our ability to consummate one or both of these planned projects could be materially adversely affected.

In September 2019 ACM Shanghai entered into a partnership agreement for the purposes of engaging in equity venture capital investments in strategic emerging and high-
tech industries with a focus on the semiconductor industry. We cannot predict the ongoing effect that the COVID‑19 outbreak in the PRC will have on companies that would
otherwise be desirable investments for the partnership, and the outbreak or related governmental actions could significantly impair the ability of the partnership to identify
desirable investments or our ability to realize the anticipated benefits of the partnership.

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Risks Related to Ownership of Class A Common Stock

The market price of Class A common stock has been and may continue to be volatile, which could result in substantial losses for investors purchasing our shares

Class A common stock only commenced trading on the Nasdaq Global Market, or Nasdaq, on November 3, 2017, and the market price of Class A common stock has been,
and could continue to be, subject to significant fluctuations. The market price of Class A common stock may fluctuate significantly in response to numerous factors, many of
which are beyond our control, including:
●
●
●

actual or anticipated fluctuations in our revenue and other operating results;
the financial projections we may provide to the public, any changes in these projections or our failure to meet these projections;
actions of securities analysts who initiate or maintain coverage of us, changes in financial estimates by any securities analysts who follow our company, or our failure
to meet these estimates or the expectations of investors;
changes in projections for the chips or chip equipment industries or in the operating performance or expectations and stock market valuations of chip companies, chip
equipment companies or technology companies in general;
changes in operating results;
any changes in the financial projections we may provide to the public, our failure to meet these projections, or changes in recommendations by any securities analysts
that elect to follow Class A common stock;
additional shares of Class A common stock being sold into the market by us or our existing stockholders or the anticipation of such sales;
price and volume fluctuations in the overall stock market, including as a result of trends in the economy as a whole;
lawsuits threatened or filed against us;
litigation and other developments relating to our patents or other proprietary rights or those of our competitors;
developments in new legislation and pending lawsuits or regulatory actions, including interim or final rulings by judicial or regulatory bodies; and
general economic trends, including changes in the demand for electronics or information technology or geopolitical events such as war or acts of terrorism, or any
responses to such events.

●

●
●

●
●
●
●
●
●

In  recent  years,  the  stock  market  in  general,  and  Nasdaq  in  particular,  has  experienced  extreme  price  and  volume  fluctuations  that  have  often  been  unrelated  or
disproportionate to changes in the operating performance of the companies whose stock is experiencing those price and volume fluctuations.

Our stock price may be volatile, and securities class action litigation has often been instituted against companies following periods of volatility of their stock price. Any
such litigation, if instituted against us, could result in substantial costs and a diversion of our management’s attention and resources.

In  the  past,  following  periods  of  volatility  in  the  overall  market  and  the  market  price  of  a  particular  company’s  securities,  securities  class  action  litigation  has  often  been
instituted against these companies. During the quarter ended December 31, 2020, such a suit was filed against our company and certain members of our management team as
described in “Item 3.  Legal Proceedings.” Such litigation could result in substantial costs and a diversion of our management’s attention and resources.

No company with stock publicly traded in the United States has effected a STAR Market listing of stock of a PRC-based subsidiary, and it is therefore difficult to predict
the effect of the proposed STAR Listing and STAR IPO on the Class A common stock.

The China Securities Regulatory Commission initially launched the STAR Market in June 2019 and trading on the Market began in July 2019. We believe we are the first
publicly traded U.S. company to propose an initial public offering of shares of a PRC subsidiary on the STAR Market. As a result, no assurance can be given regarding the
effect of the STAR Listing and the STAR IPO on the market price of the Class A common stock. The market price of Class A common stock may be volatile or may decline,
for reasons other than the risk and uncertainties described above, as the result of investor negativity or uncertainty with respect to the impact of the proposed STAR Listing
and STAR IPO.

ACM Research stockholders were not entitled to purchase ACM Shanghai shares in the pre-STAR Listing placement, and they may have limited opportunities to purchase
ACM Shanghai shares even if the STAR Listing and the STAR IPO are completed. Investors may elect to invest in our business and operations by purchasing ACM Shanghai
shares in the STAR IPO or on the STAR Market rather than purchasing ACM Research Class A common stock, and that reduction in demand could lead to a decrease in the
market price for the Class A common stock.

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An active trading market for Class A common stock may not be sustained.

Class A common stock has been listed on Nasdaq only since November 3, 2017, and we cannot assure you that an active trading market for Class A common stock will be
sustained or maintained. The lack of an active market may impair your ability to sell your shares at the time you wish to sell them or at a price that you consider reasonable.
The lack of an active market may also reduce the fair market value of your shares. There can be no assurance that we will be able to successfully develop or maintain a liquid
market for Class A common stock.

If securities or industry analysts do not publish research or reports about us, our business or our market, or if they publish negative evaluations of Class A common stock
or the stock of other companies in our industry, the price of our stock and trading volume could decline.

The trading market for Class A common stock will depend in part on the research and reports that securities or industry analysts publish about us or our business. If one or
more of the analysts who cover us downgrade the Class A common stock or publish inaccurate or unfavorable research about our business, the Class A common stock price
would likely decline. In addition, if one or more of these analysts ceases coverage of the Class A common stock or fails to publish reports about the Class A common stock on
a regular basis, we could lose visibility in the financial markets, which in turn could cause the Class A common stock price or trading volume to decline.

Requirements  associated  with  being  a  public  reporting  company  involve  significant  ongoing  costs  and  can  divert  significant  company  resources  and  management
attention.

We are subject to the reporting requirements of the Securities Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act, the
listing requirements of Nasdaq, and other rules and regulations of the SEC. We are working with our legal, independent accounting and financial advisors to identify those
areas in which changes should be made to our financial and management control systems to manage our growth and our obligations as a public reporting company. These
areas include corporate governance, corporate control, disclosure controls and procedures, and financial reporting and accounting systems. We have made, and will continue
to make, changes in these and other areas. Compliance with the various reporting and other requirements applicable to public reporting companies will require considerable
time, attention of management and financial resources. In addition, the changes we make may not be sufficient to allow us to satisfy our obligations as a public reporting
company on a timely basis.

The  listing  requirements  of  Nasdaq  require  that  we  satisfy  certain  corporate  governance  requirements  relating  to  director  independence,  distributing  annual  and  interim
reports, stockholder meetings, approvals and voting, soliciting proxies, conflicts of interest and a code of conduct. Our management and other personnel will need to devote a
substantial amount of time to ensure that we comply with all of these requirements. The reporting requirements, rules and regulations will increase our legal and financial
compliance costs and will make some activities more time-consuming and costly. These reporting requirements, rules and regulations, coupled with the increase in potential
litigation exposure associated with being a public company, could also make it more difficult for us to attract and retain qualified persons to serve as our directors or executive
officers, or to obtain certain types of insurance, including director and officer liability insurance, on acceptable terms.

We have never paid and do not intend to pay cash dividends and, consequently, your ability to achieve a return on your investment will depend on appreciation in the
price of Class A common stock.

We have never declared or paid cash dividends on our capital stock. We intend to retain any future earnings to finance the operation and expansion of our business, and we do
not expect to declare or pay any dividends in the foreseeable future. Accordingly, you may only receive a return on your investment in Class A common stock if the market
price of Class A common stock increases.

Our ability to pay dividends on Class A common stock depends significantly on our receiving distributions of funds from our subsidiaries in the PRC. PRC statutory laws and
regulations permit payments of dividends by those subsidiaries only out of their retained earnings, which are determined in accordance with PRC accounting standards and
regulations that differ from U.S. generally accepted accounting principles. The PRC regulations and our subsidiaries’ articles of association require annual appropriations of
10% of net after-tax profits to be set aside, prior to payment of dividends, as a reserve or surplus fund, which restricts our subsidiaries’ ability to transfer a portion of their net
assets to us. In addition, our subsidiaries’ short-term bank loans restrict their ability to pay dividends to us.

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The dual class structure of Class A common stock has the effect of concentrating voting control with our executive officers and directors, including our Chief Executive
Officer and President, which will limit or preclude your ability to influence corporate matters.

Class B common stock has twenty votes per share and Class A common stock has one vote per share. As of February 23, 2021, stockholders who hold shares of Class B
common  stock,  who  consist  principally  of  our  executive  officers,  employees,  directors  and  their  respective  affiliates,  collectively  held  67.7%  of  the  voting  power  of  our
outstanding capital stock. Because of the twenty-to-one voting ratio between Class B and Class A common stock, holders of Class B common stock collectively will continue
to control a majority of the combined voting power of Class A common stock and therefore be able to control all matters submitted to our stockholders for approval so long as
the shares of Class B common stock represent at least 4.8% of all outstanding shares of Class A and Class B common stock. This concentrated control will limit or preclude
your ability to influence corporate matters for the foreseeable future. This concentrated control could also discourage a potential investor from acquiring Class A common
stock due to the limited voting power of such stock relative to the Class B common stock and might harm the market price of Class A common stock.

Because of the market capitalization achieved by Class A common stock during October 2020, our charter no longer contemplates circumstances in which all of the shares of
Class B common stock will mandatorily convert into Class A common stock.  Instead, all of the Class B common stock generally will convert into Class A common stock
only upon the election of the holders of a majority of the then-outstanding shares of Class B common stock, and specific shares of Class B common stock will convert into
Class A common stock upon future transfers by the holders of those shares. The potential conversion of Class B common stock to Class A common stock will have the effect,
over time, of increasing the relative voting power of those holders of Class B common stock who retain their shares in the long term.

Delaware  law  and  provisions  in  our  charter  and  bylaws  could  make  a  merger,  tender  offer  or  proxy  contest  difficult,  thereby  depressing  the  trading  price  of  Class  A
common stock.

Our status as a Delaware corporation and the anti-takeover provisions of the Delaware General Corporation Law may discourage, delay, or prevent a change in control by
prohibiting us from engaging in a business combination with an interested stockholder for a period of three years after the person becomes an interested stockholder, even if a
change of control would be beneficial to our existing stockholders. Our charter and bylaws contain provisions that may make the acquisition of our company more difficult,
including the following:
●

our dual class common stock structure provides holders of Class B common stock with the ability to control the outcome of matters requiring stockholder approval,
even if they own significantly less than a majority of the total number of outstanding shares of Class A and Class B common stock;
when the outstanding shares of Class B common stock represent less than a majority of the combined voting power of common stock;
amendments to our charter or bylaws will require the approval of two-thirds of the combined vote of our then-outstanding shares of Class A and Class B common
stock;
vacancies on the board of directors will be able to be filled only by the board and not by stockholders;
the board, which currently is not staggered, will be automatically separated into three classes with staggered three-year terms;
directors will only be able to be removed from office for cause; and
our stockholders will only be able to take action at a meeting and not by written consent;
only our chair, our chief executive officer or a majority of our directors is authorized to call a special meeting of stockholders;
advance notice procedures apply for stockholders to nominate candidates for election as directors or to bring matters before an annual meeting of stockholders;
our charter authorizes undesignated preferred stock, the terms of which may be established, and shares of which may be issued, without stockholder approval; and
cumulative voting in the election of directors is prohibited.

●
●

●
●
●
●
●
●
●
●

As a Delaware corporation, we are also subject to provisions of Delaware law, including Section 203 of the Delaware General Corporation Law, which limits the ability of
stockholders  holding  more  than  15%  of  our  outstanding  voting  stock  from  engaging  in  certain  business  combinations  with  us.  Any  provision  of  our  charter  or  bylaws  or
Delaware law that has the effect of delaying or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of Class A
common stock, and could also affect the price that some investors are willing to pay for Class A common stock.

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Our charter designates the Court of Chancery of the State of Delaware as the sole and exclusive forum for certain litigation that may be initiated by our stockholders,
which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or stockholders.

Our charter provides that the Court of Chancery of the State of Delaware will, to the fullest extent permitted by law, be the sole and exclusive forum for:
●
●

any derivative action or proceeding brought on our behalf;
any action asserting a claim of breach of a fiduciary duty owed to us, our stockholders, creditors or other constituents by any of our directors, officers, other employees,
agents or stockholders;
any action asserting a claim arising under the Delaware General Corporation Law, our charter or bylaws, or as to which the Delaware General Corporation Law confers
jurisdiction on the Court of Chancery of the State of Delaware; or
any action asserting a claim that is governed by the internal affairs doctrine.

●

●

By becoming a stockholder in our company, you will be deemed to have notice of and have consented to the provisions of our charter related to choice of forum. The choice
of  forum  provision  in  our  charter  may  limit  our  stockholders’  ability  to  obtain  a  favorable  judicial  forum  for  disputes  with  us  or  any  of  our  directors,  officers,  other
employees, agents or stockholders, which may discourage lawsuits with respect to such claims. Alternatively, if a court were to find the choice of forum provision contained
in our charter to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm
our business, results of operations and financial condition.

Our management team has limited experience managing a public company , including a “large accelerated filer.”

The experience of the current members of our management team in managing a publicly traded company, in particular a company that is a “large accelerated filer,” interacting
with public company investors and complying with the increasingly complex laws pertaining to public companies is limited to their experience with our company since our
initial  public  offering  in  November  2017.  Our  management  team  may  not  successfully  or  efficiently  manage  our  transition  to  being  a  ”large  accelerated  filer”  subject  to
significant regulatory oversight and reporting obligations under the federal securities laws and the scrutiny of securities analysts and investors. These new obligations and
constituents will require significant attention from our management team and could divert their attention away from the day-to-day management of our business, which could
materially adversely affect our business, financial condition and operating results.

Effective as of December 31, 2020, we are a large accelerated filer, which will increase our costs and demands on management.

As  a  result  of  our  public  float  (the  market  value  of  Class  A  common  shares  held  by  non-affiliates)  as  of  June  30,  2020,  we  have  become  a  large  accelerated  filer  as  of
December 31, 2020 and therefore no longer qualify as an “emerging growth company,” as defined in the JOBS Act. As a large accelerated filer, we are subject to certain
disclosure and compliance requirements that apply to other public companies but did not previously apply to us due to our status as an emerging growth company. These
requirements include, but are not limited to:
●

the requirement that our independent registered public accounting firm attest to the effectiveness of our internal control over financial reporting under Section 404(b) of
the Sarbanes-Oxley Act of 2002;
compliance  with  any  requirement  that  may  be  adopted  by  the  PCAOB  regarding  mandatory  audit  firm  rotation  or  a  supplement  to  the  auditor’s  report  providing
additional information about the audit and the financial statements;
the requirement that we provide full and more detailed disclosures regarding executive compensation; and
the requirement that we hold a non-binding advisory vote on executive compensation and obtain stockholder approval of any golden parachute payments not previously
approved.

●

●
●

We expect that compliance with the additional requirements of being a “large accelerated filer” will increase our legal and financial compliance costs and cause management
and other personnel to divert attention from operational and other business matters to devote substantial time to public company reporting requirements. In addition, if we are
not  able  to  comply  with  changing  requirements  in  a  timely  manner,  the  market  price  of  Class  A  common  stock  could  decline  and  we  could  be  subject  to  sanctions  or
investigations  by  the  stock  exchange  on  which  Class  A  common  stock  is  listed,  the  SEC,  or  other  regulatory  authorities,  which  would  require  additional  financial  and
management resources.

We will incur increased costs and demands upon management as a result of complying with the laws and regulations affecting public companies, particularly as we are
no longer an “emerging growth company,” which could adversely affect our business, operating results and financial condition.

As a public company, and particularly after we cease to be an “emerging growth company,” effective as of December 31, 2020, we will continue to incur significant legal,
accounting and other expenses. We are subject to the reporting requirements of the Securities and Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform
and Consumer Protection Act, and the rules and regulations of Nasdaq. These requirements have increased and will continue to increase our legal, accounting and financial
compliance costs and have made and will continue to make some activities more time consuming and costly. For example, we expect these rules and regulations to make it
more  difficult  and  more  expensive  for  us  to  obtain  director  and  officer  liability  insurance,  and  we  may  be  required  to  accept  reduced  policy  limits  and  coverage  or  incur
substantially  higher  costs  to  maintain  the  same  or  similar  coverage.  As  a  result,  it  may  be  more  difficult  for  us  to  attract  and  retain  qualified  individuals  to  serve  as  our
executive officers or on the board of directors, particularly to serve on the audit and compensation committees.

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The Sarbanes-Oxley Act requires, among other things, that we assess the effectiveness of our internal control over financial reporting annually and the effectiveness of our
disclosure controls and procedures quarterly. In particular, beginning with respect to the year ending December 31, 2018, Section 404 of the Sarbanes-Oxley Act, or Section
404, required our management to perform system and process evaluation and testing to allow it to report on the effectiveness of our internal control over financial reporting.

Investor  perceptions  of  our  company  may  suffer  if  deficiencies  are  found,  which  could  cause  a  decline  in  the  market  price  of  our  stock.  Irrespective  of  compliance  with
Section 404, any failure of our internal control over financial reporting could have a material adverse effect on our stated operating results and harm our reputation. If we are
unable to implement these requirements effectively or efficiently, it could harm our operations, financial reporting, or financial results and could result in an adverse opinion
on our internal controls from our independent registered public accounting firm.

In addition, changing laws, regulations and standards relating to corporate governance and public disclosure are creating uncertainty for public companies, increasing legal
and financial compliance costs and making some activities more time consuming. These laws, regulations and standards are subject to varying interpretations, in many cases
due to their lack of specificity, and, as a result, their application in practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could
result in continuing uncertainty regarding compliance matters and higher costs necessitated by ongoing revisions to disclosure and governance practices. We intend to invest
resources  to  comply  with  evolving  laws,  regulations  and  standards,  and  this  investment  may  result  in  increased  general  and  administrative  expense  and  a  diversion  of
management’s time and attention from revenue-generating activities to compliance activities. If our efforts to comply with new laws, regulations and standards differ from the
activities intended by regulatory or governing bodies, regulatory authorities may initiate legal proceedings against us and our business may be harmed.

Short sellers of our stock may be manipulative and may drive down the market price of our Class A common stock.

Short  selling  is  the  practice  of  selling  securities  that  a  seller  does  not  own  but  rather  has  borrowed,  or  intends  to  borrow,  from  a  third  party  with  the  intention  of  buying
identical securities at a later date to return to the lender. A short seller hopes to profit from a decline in the value of the securities between the sale of the borrowed securities
and the purchase of the replacement shares, as the short seller expects to pay less in that purchase than it received in the sale. As it is in the short seller’s interest for the price
of the stock to decline, some short sellers publish, or arrange for the publication of, opinions or characterizations regarding the relevant issuer, its business prospects and
similar matters calculated to or which may create negative market momentum, which may permit them to obtain profits for themselves as a result of selling the securities
short. The use of the Internet, social media, and blogging have allowed short sellers to publicly attack a company’s credibility, strategy and veracity by means of so-called
“research reports” that mimic the type of investment analysis performed by legitimate securities research analysts. Issuers with limited trading volumes or substantial retail
stockholder bases can be particularly susceptible to higher volatility levels, and can be particularly vulnerable to such short attacks.

Short seller publications are not regulated by any governmental or self-regulatory organization or any other official authority in the United States and are not subject to the
certification requirements imposed by the SEC in Regulation Analyst Certification. Accordingly, the opinions they express may be based on distortions of actual facts or, in
some cases, outright fabrications. In light of the limited risks involved in publishing such information, and the significant profits that can be made from running successful
short attacks, short sellers will likely continue to issue such reports.  Short-seller publications may create the appearance or perception of wrongdoing, even when they are not
substantiated, and may therefore affect the reputation or perception of our company and management.

While we intend to strongly defend our public filings against any such short seller attacks, in many situations we could be constrained, for example, by principles of freedom
of speech, applicable state law or issues of commercial confidentiality, in the manner in which we are able to proceed against the relevant short seller.

Such  short-seller  attacks  have  caused,  and  may  cause  in  the  future,  temporary  or  possibly  long  term,  declines  in  the  market  price  of  Class  A  common  stock  and  possible
litigation initiated against us. During the quarter ended December 31, 2020, such a short-seller publication was issued with respect to our company and certain members of the
management team, and has been referenced by the plaintiffs in the litigation described in “Item 3.  Legal Proceedings.”

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General

Our production facilities could be damaged or disrupted by a natural disaster, war, terrorist attacks or other catastrophic events.

Our manufacturing facilities are subject to risks associated with natural disasters, such as earthquakes, fires, floods tsunami, typhoons and volcanic activity, environmental
disasters, health epidemics, and other events beyond our control such as power loss, telecommunications failures, and uncertainties arising out of armed conflicts or terrorist
attacks.  The  frequency  and  intensity  of  severe  weather  events  are  reportedly  increasing  throughout  the  world  as  part  of  broader  climate  changes.  Global  weather  pattern
changes may pose long-term risks of physical impacts to our business. A substantial majority of our facilities as well as our research and development personnel are located in
the  PRC.  Any  catastrophic  loss  or  significant  damage  to  any  of  our  facilities  would  likely  disrupt  our  operations,  delay  production,  and  adversely  affect  our  product
development  schedules,  shipments  and  revenue.  In  addition,  any  such  catastrophic  loss  or  significant  damage  could  result  in  significant  expense  to  repair  or  replace  the
facility and could significantly curtail our research and development efforts in a particular product area or primary market, which could have a material adverse effect on our
operations and operating results.

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Item 2.

Properties

We have occupied our current corporate headquarters in Fremont, California, since February 2008, under a lease that, after an amendment in February 2021, now extends
through March 2023.

We  conduct  research  and  development,  service  support  operations,  and  a  portion  of  our  manufacturing  at  ACM  Shanghai’s  headquarters.  This  facility  consists  of  60,000
square feet, of which 36,000 square feet are allocated for manufacturing, and is located in the Zhangjiang Hi Tech Park in Shanghai. We have leased this facility since 2007
and our lease currently extends until January 1, 2022.
In January 2018, ACM Shanghai entered into an operating lease for a second manufacturing space located in Shanghai, ten miles from its headquarters. The lease covers a
total of 103,318 square feet, of which 100,000 square feet are allocated for production. The lease term expires on January 15, 2022.

In addition, we provide sales support and customer service operations from leased office space in Jiangyin and Wuxi in the PRC and Icheon in South Korea.

In May 2020 ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc. or Shengwei, entered into an agreement for a 50-year land use right in
the  Lingang  region  of  Shanghai.  In  July  2020  Shengwei  began  a  multi-year  construction  project  for  a  new  development  and  production  center,  with  the  objective  of
commencing production at the new facility in late 2022. The planned 1,000,000 square foot facility will incorporate state-of-the-art manufacturing systems and automation
technologies,  and  will  provide  the  floor  space  to  support  significantly  more  production  capacity  and  related  research  and  development  activities  when  fully-staffed  and
supplied.

In connection with the Lingang facility project, on October 28, 2020, a wholly owned subsidiary of Shengwei entered into Shanghai Public Rental Housing Overall Pre-Sale
Contracts with Shanghai Lingang Industrial Zone Public Rental Housing Construction and Operation Management Co., Ltd. for an aggregate price to us of approximately $40
million. Under these contracts, Shengwei’s subsidiary will receive apartment units and corresponding land use rights before October 31, 2021 as part of a pilot project of
public rental housing in the “rent before sale” park in the Lingang Industrial Zone. The contracts stipulate that, for a ten-year term, Shengwei’s subsidiary will be obligated to
manage the apartment units for public rental use in accordance with public rental housing standards and must rent the apartment units to employees of ACM Shanghai and its
subsidiaries who work in the Lingang Industrial Zone. After that ten-year period expires, Shengwei’s subsidiary may use the apartment units as stock of commercial housing
and may sell them separately in sets.

Item 3.

Legal Proceedings

Securities Class Action Lawsuit

On December 21, 2020, a putative class action lawsuit against our company and three of our current executive officers was filed in the U.S. District Court for the Northern
District of California under the caption Kain v. ACM Research, Inc., et al., No. 3:20-cv-09241, which we refer to as the Securities Class Action. The complaint asserts claims
under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder, and seeks monetary damages in an unspecified amount as
well as costs and expenses incurred in the litigation.  The court has not yet appointed a lead plaintiff.  Our management believes the claims are without merit and intend to
vigorously defend this litigation.  We are currently unable to predict the outcome of this lawsuit and therefore cannot determine the likelihood of loss nor estimate a range of
possible loss.

From time to time we may become involved in other legal proceedings or may be subject to claims arising in the ordinary course of our business. Although the results of these
proceedings and claims cannot be predicted with certainty, we currently believe that the final outcome of these ordinary course matters will not have a material adverse effect
on our business, operating results, financial condition or cash flows. Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement
costs, diversion of management resources and other factors.

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PART II

Item 5.

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

Information Regarding the Trading of Common Stock

The Class A common stock has traded on NASDAQ Global Market under the symbol “ACMR” since November 3, 2017. The Class B common stock is not listed or traded on
any stock exchange.

Holders of Common Stock

As of February 23, 2021, there were 16,967,095 shares of Class A common stock outstanding held of record by 47 stockholders. The actual number of holders of Class A
common  stock  is  substantially  greater  and  includes  stockholders  who  are  beneficial  owners  and  whose  shares  are  held  of  record  by  banks,  brokers,  and  other  financial
institutions.

As of February 23, 2021, there were 1,775,939 shares of Class B common stock held of record by 24 stockholders.

We have never declared or paid cash dividends on our capital stock. We intend to retain all available funds and any future earnings to support the operation of and to finance
the growth and development of our business and do not anticipate paying any cash dividends in the foreseeable future.

Securities Authorized for Issuance Under Equity Compensation Plans

The information required by this item will be set forth in the definitive proxy statement we will file in connection with our 2021 Annual Meeting of Stockholders and is
incorporated by reference herein.

Sales of Unregistered Securities

In 2020, we issued, pursuant to the exercise of stock options at per share exercise prices ranging from $0.75 to $1.50 per share, an aggregate of 323,667 shares of Class A
common stock that were not registered under the Securities Act of 1933.

The  offer  and  sale  of  those  shares  were  exempt  from  registration  under  the  Securities  Act  of  1933  by  virtue  of  Section  4(a)(2)  thereof  (or  Regulation  D  promulgated
thereunder)  because  they  did  not  involve  a  public  offering.  The  recipients  of  the  shares  acquired  the  securities  for  investment  only  and  not  with  a  view  to  or  for  sale  in
connection with any distribution thereof, and appropriate legends were recorded with respect to the shares. The recipients of the shares were accredited investors under Rule
501 of Regulation D.

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Performance Graph

The following graph compares the total return of an investment of $100 in cash at the closing price of  November 3, 2017 through December 31, 2020 for (1) our common
stock, (2) the Russell 1000 index, and (3) the Nasdaq Composite Index. All values assume reinvestment of all dividends.   Stockholder returns over the indicated period are
based on historical data and are not necessarily indicative of future stockholder returns.

COMPARISON OF 3 YEAR CUMULATIVE TOTAL RETURN
Among ACM Research, Inc., the Nasdaq Index, and the Russell 1000 Index

Company Name/Index
ACM Research, Inc.
Russell 1000 Index
Nasdaq Composite Index

Base
Period

11/3/2017 
100 
100 
100 

46

  Years Ending      

12/29/2017 
86.78 
103.34 
102.05 

12/31/2018   

12/31/2019   

179.83     
96.54     
98.09     

304.96     
124.43     
132.64     

12/31/2020 
1,342.98 
147.91 
190.53 

 
 
 
 
 
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Item 7.

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

The following discussion and analysis should be read in conjunction with the audited consolidated financial statements and related notes included in this report. In addition
to historical information, the following discussion contains forward-looking statements that involves risks, uncertainties and assumptions. See “Forward-Looking Statements
and Statistical Data” at page 3 of this report. Please read “Item 1A. Risk Factors” for a discussion of factors that could cause our actual results to differ materially from our
expectations

Overview

We supply advanced, innovative capital equipment developed for the global semiconductor industry. Fabricators of advanced integrated circuits, or chips, can use our wet-
cleaning and other front-end processing tools in numerous steps to improve product yield, even at increasingly advanced process nodes. We have designed these tools for use
in fabricating foundry, logic and memory chips, including dynamic random-access memory, or DRAM, and 3D NAND-flash memory chips. We also develop, manufacture
and sell a range of advanced packaging tools to wafer assembly and packaging customers.

We are focused on building a strategic portfolio of intellectual property to support and protect our key innovations. Our tools have been developed using our key proprietary
technologies:
●

Space Alternated Phase Shift, or SAPS, technology for flat and patterned wafer surfaces, which employs alternating phases of megasonic waves to deliver megasonic
energy in a highly uniform manner on a microscopic level;
Timely Energized Bubble Oscillation, or TEBO, technology for patterned wafer surfaces at advanced process nodes, which provides effective, damage-free cleaning for
2D and 3D patterned wafers with fine feature sizes;
Tahoe technology for cost and environmental savings, which delivers high cleaning performance using significantly less sulfuric acid and hydrogen peroxide than is
typically consumed by conventional high-temperature single-wafer cleaning tools; and
Electro-Chemical Plating, or ECP, technology for advanced metal plating, which includes Ultra ECP ap, or Advanced Packaging, technology for back-end assembly
processes, Ultra ECP 3d for through-silicon-via, or tsv, and Ultra ECP map, or Multi-Anode Partial Plating, technology for front-end wafer fabrication processes.

●

●

●

We  conduct  a  substantial  majority  of  our  product  development,  manufacturing,  support  and  services  in  the  PRC,  with  additional  product  development  and  subsystem
production in South Korea. Substantially all of our tools are built to order at our manufacturing facilities in the Pudong region of Shanghai, which facilities now encompass a
total of 136,000 square feet of floor space for production capacity, with 50,000 square feet having been added in the second quarter of 2020 through an expansion of our
second facility in the Pudong region of Shanghai. In May 2020 ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc., entered into an
agreement  for  a  land  use  right  in  the  Lingang  region  of  Shanghai.  In  July  2020  Shengwei  Research  (Shanghai),  Inc.  began  a  multi-year  construction  project  for  a  new
1,000,000 square foot development and production center. that will incorporate state-of-the-art manufacturing systems and automation technologies, and will provide the floor
space to support significantly increased production capacity and related research and development activities.  See “Item 2. Properties” of Part I of this report.

Our  experience  has  shown  that  chip  manufacturers  in  the  PRC  and  throughout  Asia  demand  equipment  meeting  their  specific  technical  requirements  and  prefer  building
relationships with local suppliers. We will continue to seek to leverage our local presence to address the growing market for semiconductor manufacturing equipment in the
region  by  working  closely  with  regional  chip  manufacturers  to  understand  their  specific  requirements,  encourage  them  to  adopt  our  SAPS,  TEBO,  Tahoe  and  ECP
technologies, and enable us to design innovative products and solutions to address their needs.

Recent Developments

STAR Market Listing and IPO

In June 2019 we announced our intention to complete:

•

•

a listing, which we refer to as the STAR Listing, of shares of ACM Shanghai on the Shanghai Stock Exchange’s Sci-Tech innovAtion boaRd, known as the STAR
Market; and
a concurrent initial public offering, which we refer to as the STAR IPO, of ACM Shanghai shares in the PRC, at a pre-offering valuation of not less than RMB 5.15
billion ($747.1 million).

We believe the STAR Listing will help us scale our business in mainland PRC, as we continue to seek to broaden our markets in Europe, Japan, South Korea, Taiwan and the
United States. Our global headquarters will continue to be located in Fremont, California, and we are committed to maintaining the listing of Class A common stock on the
Nasdaq Global Market.

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To qualify for the STAR Listing, ACM Shanghai was required to have multiple independent stockholders in the PRC. In June and November 2019, ACM Shanghai entered
into private placement agreements with fifteen investors pursuant to which the investors purchased ACM Shanghai shares for a total of RMB 416.1 million ($59.7 million as
of the investment dates). As of December 31, 2020, 91.7% of the outstanding shares of ACM Shanghai were owned by ACM Research and 8.3% were owned by the private
placement investors.

Upon the submission of application documents by ACM Shanghai for the STAR Listing and STAR IPO to the Shanghai Stock Exchange during the second quarter of 2020,
the  shares  of  ACM  Shanghai  issued  to  the  private  placement  investors  were  reclassified  from  redeemable  non-controlling  interests  to  non-controlling  interests.  Upon  the
termination  of  such  redemption  feature,  we  released  the  aggregate  proceeds  of  the  private  placement  funding  from  reserved  cash,  which  we  previously  had  voluntarily
imposed in light of a potential redemption.

On  September  30,  2020,  the  application  was  approved  by  the  Listing  Committee  of  the  STAR  Market.  The  Listing  Committee  subsequently  determined  to  reassess  the
approval application in light of allegations regarding our business and operations that were contained in a report issued by J Capital Research USA Ltd. on October 8, 2020
and an ensuing putative class action lawsuit against our company and three of our current executive officers filed on December 21, 2020 (See “Item 3. Legal Proceedings” of
Part I of this report). Pending the completion of the Listing Committee’s reassessment, the STAR Listing remains subject to submission of formal registration and to review
and approval by the China Securities Regulatory Commission.

ACM Shanghai currently proposes to offer up to ten percent of its shares in the STAR IPO. The net proceeds of the STAR IPO are expected to be used to fund:

•
•

•

the land lease for, and construction of, ACM Shanghai’s proposed development and production center in the Lingang region of Shanghai;
product development to upgrade and expand our process equipment targeted at more advanced process nodes, including technical improvement and development of
TEBO  megasonic  cleaning  equipment,  Tahoe  single  wafer  wet  bench  combined  cleaning  equipment,  front-end  brush  scrubbing  equipment,  auto  bench  cleaning
equipment, front end process electroplating equipment, Stress Free Polish equipment and vertical furnace equipment, additional new products to expand our product
portfolio; and
working capital.

COVID–19 Outbreak

Following its initial outbreak in December 2019, COVID–19, or the coronavirus, spread across the PRC, the United States and globally. The COVID–19 outbreak affected our
business and operating results for the first quarter of 2020. Since that time, our personnel have been largely unable to travel between our offices in the United States and our
facilities in the PRC, which may impact our ability to effectively operate our company and to oversee our operations. The COVID–19 situation continues to evolve, and it is
impossible for us to predict the effect and ultimate impact of the COVID–19 outbreak on our business operations and results. While the quarantine, social distancing and other
regulatory measures instituted or recommended in response to COVID–19 are expected to be temporary, the duration of the business disruptions, and related financial impact,
of the outbreak cannot be estimated at this time. For an explanation of some of the risks we potentially face, please read carefully the information provided under “Item 1A.
Risk Factors—Risks Related to the COVID–19 Outbreak,” of part I of this report.

The following summary reflects our expectations and estimates based on information known to us as of the date of this filing:

•

Operations: We conduct substantially all of our product development, manufacturing, support and services in the PRC, and those activities have been directly impacted
by the COVID–19 outbreak and related restrictions on transportation and public appearances. In February 2020 our ACM Shanghai headquarters were closed for an
additional six days beyond the normal Lunar New Year Holiday in accordance with Shanghai government restrictions related to the outbreak. We took steps before and
after the Lunar New Year to ensure no employees took unreasonable risks to rush back to work. Currently substantially all of our staff have returned to work at both of
our Shanghai facilities. To date we have not experienced absenteeism of management or other key employees, other than certain of our executive officers being delayed
in traveling back to the PRC after working from our California office in February. Our corporate headquarters are located in Alameda County in the San Francisco Bay
Area and are the subject of a number of state and county public health directives and orders. These actions have not negatively impacted our business to date, however,
because of the limited number of employees at our headquarters and the nature of the work they generally perform.

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•

•

•

Customers:  Our  customers’  business  operations  have  been,  and  are  continuing  to  be,  subject  to  business  interruptions  arising  from  the  COVID–19  outbreak.
Historically a majority of our revenue from sales of single-wafer wet cleaning equipment for front-end manufacturing has been derived from customers located in the
PRC and surrounding areas that have been impacted by COVID–19. Three customers that accounted for 75.8% of our revenue in 2020, 73.8% in 2019 and 87.6% of
our revenue in 2018 are based in the PRC and South Korea. One of those customers, Yangtze Memory Technologies Co., Ltd. — which accounted for 26.8% of our
2020  revenue,  27.5%  of  our  2019  revenue  and  39.6%  of  our  2018  revenue  —  is  based  in  Wuhan.  While  Yangtze  Memory  Technologies  Co.,  Ltd.  and  other  key
customers continued to operate their fabrication facilities without interruption during and after the first quarter of 2020, they were forced to restrict access of service
personnel and deliveries to and from their facilities. A portion of the shipments we previously had expected to deliver in the first quarter of 2020 were postponed due to
these factors, and were subsequently delivered in the second quarter of 2020.
Suppliers:  Our  global  supply  chain  includes  components  sourced  from  the  PRC,  Japan,  Taiwan,  the  United  States  and  Europe.  While  the  COVID–19  outbreak  has
resulted  in  significant  governmental  measures  being  implemented  to  control  the  spread  of  COVID–19  around  the  world,  to  date  we  have  not  experienced  material
issues with our supply chain. As with our customers, we continue to be in close contact with our key suppliers to help ensure we are able to identify any potential
supply issues that may arise.
Projects: Our strategy includes a number of plans to support the growth of our core business, including the STAR Listing and STAR IPO with respect to shares of
ACM Shanghai described above as well as ACM Shanghai’s recent acquisition of a land use right in the Lingang area of Shanghai where we began construction of a
new research and development center and factory in July 2020. The extent to which COVID–19 impacts these projects will depend on future developments that are
highly uncertain, but to date, the timing of these ongoing projects has not been delayed or disrupted by COVID–19 or related government measures.

Key Components of Results of Operations

Revenue

We develop, manufacture and sell single-wafer wet cleaning equipment and custom-made wafer assembly and packaging equipment. Because we sell tools to a small number
of  customers  and  we  customize  those  tools  to  fulfill  the  customers’  specific  requirements,  our  revenue  generation  fluctuates,  depending  on  the  length  of  the  sales,
development and evaluation phases:
●

Sales and Development. During the sale process we may, depending on a prospective customer’s specifications and requirements, need to perform additional research,
development  and  testing  to  establish  that  a  tool  can  meet  the  prospective  customer’s  requirements.  We  then  host  an  in-house  demonstration  of  the  customized  tool
prototype. Sales cycles for orders that require limited customization and do not require that we develop new technology usually take from 6 to 12 months, while the
product life cycle, including the initial design, demonstration and final assembly phases, for orders requiring development and testing of new technologies can take as
long as 2 to 4 years. As we expand our customer base, we expect to gain more repeat purchase orders for tools that we have already developed and tested, which will
eliminate the need for a demonstration phase and shorten the development cycle.
Evaluation Periods. When a chip manufacturer proposes to purchase a particular type of tool from us for the first time, we offer the manufacturer an opportunity to
evaluate the tool for a period that can extend for 24 months or longer. In some cases, we do not receive any payment on first-time purchases until the tool is accepted.
As a result, we may spend more than $2.0 million to produce a tool without receiving payment for more than 24 months or, if the tool is not accepted, without receiving
any payment. Please see “Item 1A. Risk Factors—Risks Related to Our Business and Our Industry—We may incur significant expenses long before we can recognize
revenue from new products, if at all, due to the costs and length of research, development, manufacturing and customer evaluation process cycles.”
Purchase Orders. In accordance with industry practice, sales of our tools are made pursuant to purchase orders. Each purchase order from a customer for one of our
tools contains specific technical requirements intended to ensure, among other things, that the tool will be compatible with the customer’s manufacturing process line.
Until  a  purchase  order  is  received,  we  do  not  have  a  binding  purchase  commitment.  Our  customers  to  date  have  provided  us  with  non-binding  one-  to  two-year
forecasts of their anticipated demands, and we expect future customers to furnish similar non-binding forecasts for planning purposes. Any of those forecasts would be
subject to change, however, by the customer at any time, without notice to us.
Fulfillment.  We  seek  to  obtain  a  purchase  order  for  a  tool  from  three  to  four  months  in  advance  of  the  expected  delivery  date.  Depending  upon  the  nature  of  a
customer’s specifications, the lead time for production of a tool generally will extend from two to four months. The lead-time can be as long as six months, however,
and in some cases we may need to begin producing a tool based on a customer’s non-binding forecast, rather than waiting to receive a binding purchase order.

●

●

●

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We expect our sales prices generally to range from $2 million to more than $5 million for our single-wafer wet cleaning production tools. The sales price of a particular tool
will vary depending upon the required specifications. We have designed equipment models using a modular configuration that we customize to meet customers’ technical
specifications.  For  example,  our  Ultra  C  models  for  SAPS,  TEBO  and  Tahoe  solutions  use  common  modular  configurations  that  enable  us  to  create  a  wet-cleaning  tool
meeting a customer’s specific requirements, while using pre-existing designs for chamber, electrical, chemical delivery and other modules.

Because of the relatively large purchase prices of our tools, customers generally pay in installments. For a customer’s repeat purchase of a particular type of tool, the specific
payment terms are negotiated in connection with acceptance milestones of a purchase order. Based on our limited experience with repeat sales of our tools, we expect that we
will receive an initial payment upon delivery of a tool in connection with a repeat purchase, with the balance being paid once the tool has been tested and accepted by the
customer. Our sales arrangements for repeat purchases do not include a general right of return.

Based on our market experience, we believe that implementation of our equipment by one of our selected leading companies will attract and encourage other manufacturers to
evaluate our equipment, because the leading company’s implementation will serve as validation of our equipment and will enable the other manufacturers to shorten their
evaluation processes. We placed our first SAPS-based tool in 2009 as a prototype. We worked closely with the customer for two years in debugging and modifying the tool,
and  the  customer  then  spent  two  more  years  of  qualification  and  running  pilot  production  before  beginning  volume  manufacturing.  We  expect  that  the  period  from  new
product introduction to high volume manufacturing will be three years or less in the future. Please see “Item 1A. Risk Factors—Business—We depend on a small number of
customers for a substantial portion of our revenue, and the loss of, or a significant reduction in orders from, one or more of our major customers could have a material adverse
effect on our revenue and operating results. There are also a limited number of potential customers for our products.”

Substantially all of our sales in 2020, 2019 and 2018 were to customers located in Asia, and we anticipate that a substantial majority of our revenue will continue to come
from customers located in this region for the near future. We have increased our sales efforts to penetrate the markets in North America and Western Europe.

We utilize the guidance set forth in Accounting Standards Update, or ASU, No. 2014-09, Revenue from Contracts with Customers (Topic 606), of the Financial Accounting
Standards Board, or FASB, regarding the recognition, presentation and disclosure of revenue in our financial statements as described below under “—Critical Accounting
Estimates—Revenue Recognition.”

We  offer  extended  maintenance  service  contracts  to  provide  services  such  as  trouble-shooting  or  fine-tuning  tools,  and  installing  spare  parts,  following  expiration  of
applicable initial standard warranty coverage periods, which for sales to date have extended from 12 to 36 months as described under “—Critical Accounting Estimates—
Warranty.” A limited number of the single-wafer wet cleaning tools we have sold to date are no longer covered by their initial warranties. In 2020 and 2019, we received
payments  for  parts  and  labor  for  service  activities  provided  from  time  to  time,  but  as  of  December  31,  2020  we  had  not  yet  entered  into  extended  maintenance  service
contracts with respect to any of the tools for which initial warranty coverage had expired. We expect to enter into extended maintenance service contracts with customers as
additional initial warranties expire, but we do not expect revenue from extended maintenance service contracts to represent a material portion of our revenue in the future.

The loss or delay of one or more large sale transactions in a quarter could impact our results of operations for that quarter and any future quarters for which revenue from that
transaction is lost or delayed, as described under “Item 1A. Risk Factors—Risks Related to Our Business and Our Industry—Our quarterly operating results can be difficult to
predict and can fluctuate substantially, which could result in volatility in the price of Class A common stock.” It is difficult to predict accurately when, or even if, we can
complete a sale of a tool to a potential customer or to increase sales to any existing customer. Our tool demand forecasts are based on multiple assumptions, including non-
binding forecasts received from customers years in advance, each of which may introduce error into our estimates. Difficulties in forecasting demand for our tools make it
difficult for us to project future operating results and may lead to periodic inventory shortages or excess spending on inventory or on tools that may not be purchased, as
further  described  in  “Item  1A.  Risk  Factors—Risks  Related  to  Our  Business  and  Our  Industry—Difficulties  in  forecasting  demand  for  our  tools  may  lead  to  periodic
inventory shortages or excess spending on inventory items that may not be used.”

Cost of Revenue

Cost of revenue for capital equipment consists primarily of:
●
●
●

direct costs, which consist principally of costs of tool components and subassemblies purchased from third-party vendors;
compensation of personnel associated with our manufacturing operations, including stock-based compensation;
depreciation of manufacturing equipment;

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●
●
●

amortization of costs of software used for manufacturing purposes;
other expenses attributable to our manufacturing department; and
allocated overhead for rent and utilities.

We  are  not  party  to  any  long-term  purchasing  agreements  with  suppliers.  Please  see  “Item  1A.  Risk  Factors—Risks  Related  to  Our  Business  and  Our  Industry—Our
customers do not enter into long-term purchase commitments, and they may decrease, cancel or delay their projected purchases at any time.”

As our customer base and tool installations continue to grow, we will need to hire additional manufacturing personnel. The rates at which we add customers and install tools
will affect the level and time of this spending. In addition, because we often import components and spare parts from the United States, we have experienced, and expect to
continue to experience, the effect of the dollar’s growth on our cost of revenue.

Gross Margin

Our gross margin was 44.4% in 2020, 47.1% in 2019 and 46.2% in 2018. Gross margin varies from period to period, primarily related to the level of utilization and the timing
and mix of purchase orders. We expect gross margin to range between 40% and 45% for the foreseeable future, with direct manufacturing costs approximating 50% to 55% of
revenue and overhead costs totaling approximately 5% of revenue.

We seek to maintain our gross margin by continuing to develop proprietary technologies that avoid pricing pressure for our wet cleaning equipment. We actively manage our
operations  through  principles  of  operational  excellence  designed  to  ensure  continuing  improvement  in  the  efficiency  and  quality  of  our  manufacturing  operations  by,  for
example,  implementing  factory  constraint  management  and  change  control  and  inventory  management  systems.  In  addition,  our  purchasing  department  actively  seeks  to
identify and negotiate supply contracts with improved pricing to reduce cost of revenue.

A significant portion of our raw materials are denominated in the RMB, while the majority of our purchase orders are denominated in U.S. dollars. As a result, currency
exchange rates may have a significant effect on our gross margin.

Operating Expenses

We have experienced, and expect to continue to experience, growth in the absolute dollar amount of our operating expenses, as we invest to support the anticipated growth of
our customer base and the continued development of proprietary technologies.

Sales and Marketing

Sales and marketing expense accounted for 10.7% of our revenue in 2020, 11.1% of our revenue in 2019 and 12.9% of our revenue in 2018. Sales and marketing expense
consists primarily of:
●
●
●
●
●
●
●

compensation of personnel associated with pre- and after-sales support and other sales and marketing activities, including stock-based compensation;
sales commissions paid to independent sales representatives;
fees paid to sales consultants;
shipping and handling costs for transportation of products to customers;
cost of trade shows;
travel and entertainment; and
allocated overhead for rent and utilities.

Sales and marketing expense can be significant and may fluctuate, in part because of the resource-intensive nature of our sales efforts and the length and variability of our
sales cycle. The length of our sales cycle, from initial contact with a customer to the execution of a purchase order, is generally 6 to 24 months.

During the sales cycle, we expend significant time and money on sales and marketing activities, including educating customers about our tools, participating in extended tool
evaluations and configuring our tools to customer-specific needs. Sales and marketing expense in a given period can be particularly affected by the increase in travel and
entertainment expenses associated with the finalization of purchase orders or the installation of tools.

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We expect that, for the foreseeable future, sales and marketing expense will increase in absolute dollars, as we continue to invest in sales and marketing by hiring additional
employees  and  expanding  marketing  programs  in  existing  or  new  markets.  We  must  invest  in  sales  and  marketing  processes  in  order  to  develop  and  maintain  close
relationships with customers. We are making dollar-based investments in dollars in order to support growth of our customer base in the United States, and the relative strength
of the dollar could have a significant effect on our sales and marketing expense.

Research and Development

Research and development expense accounted for 12.2% of our revenue in 2020, 12.0% of our revenue in 2019 and 13.9% of our revenue in 2018. Research and development
expense relates to the development of new products and processes and encompasses our research, development and customer support activities. Research and development
expense consists primarily of:
●
●
●
●
●

compensation of personnel associated with our research and development activities, including stock-based compensation;
costs of components and other research and development supplies;
travel expense associated with customer support;
amortization of costs of software used for research and development purposes; and
allocated overhead for rent and utilities.

Some of our research and development has been funded by grants from the PRC government, as described in “—PRC Government Research and Development Funding”
below.

We  expect  that,  for  the  foreseeable  future,  research  and  development  expense  will  increase  in  absolute  dollars  and  will  range  between  13%  and  15%  of  revenue,  as  we
continue to invest in research and development to advance our technologies. We intend to continue to invest in research and development to support and enhance our existing
single-wafer wet cleaning products and to develop future product offerings to build and maintain our technology leadership position.

General and Administrative

General and administrative expense accounted for 7.8% of our revenue in 2020, 7.5% of our revenue in 2019 and 10.7% of our revenue in 2018. General and administrative
expense consists primarily of:
●

compensation  of  executive,  accounting  and  finance,  human  resources,  information  technology,  and  other  administrative  personnel,  including  stock-based
compensation;
professional fees, including accounting and legal fees;
other corporate expenses; and
allocated overhead for rent and utilities.

●
●
●

We  expect  that,  for  the  foreseeable  future,  general  and  administrative  expense  will  increase  in  absolute  dollars,  as  we  incur  additional  costs  associated  with  growing  our
business and operating as a public company.

Stock-Based Compensation Expense

We  grant  stock  options  to  employees  and  non-employee  consultants  and  directors,  and  we  account  for  those  stock-based  awards  in  accordance  with  ASC  Topic  718,
Compensation—Stock Compensation.

●

●

Stock-based awards granted to employees and non-employees are measured at the fair value of the awards on the grant date and are recognized as expenses either (a)
immediately on grant, if no vesting conditions are required, or (b) using the graded vesting method, net of estimated forfeitures, over the requisite service period. The
fair value of stock options is determined using the Black-Scholes valuation model. Stock-based compensation expense, when recognized, is charged to cost of revenue
or to the category of operating expense corresponding to the service function of the employee or non-employee.
We also grant discounts to employees when they subscribe for the new shares of ACM Shanghai, and we account for those stock-based awards in accordance with
Accounting Standards Codification, or ASC, Topic 718, Compensation—Stock Compensation

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Cost of revenue and operating expenses during the periods presented below have included stock-based compensation as follows:

Year Ended December 31,
2019

2020

2018

Stock-Based Compensation Expense:
Cost of revenue
Sales and marketing expense
Research and development expense
General and administrative expense

  $

  $

175    $
1,199     
763     
3,491     
5,628    $

250    $
328     
1,093     
1,901     
3,572    $

71 
120 
255 
2,917 
3,363 

We recognized stock-based compensation expense to employees of $5.2 million in 2020, $2.3 million in 2019 and $0.7 million in 2018. As of December 31, 2020, 2019 and
2018, we had $8.7 million, $4.7 million and $2.4 million, respectively, of total unrecognized employee stock-based compensation expense, net of estimated forfeitures, related
to unvested stock-based awards. These are expected to be recognized over a weighted-average period of 1.89 years, 1.47 years and 1.62 years, respectively.

We recognized stock-based compensation expense to non-employees of $0.4 million in 2020, $1.3 million in 2019 and $2.7 million in 2018.

Expiration of Potential Market Cap-Based Automatic Conversion of Class B Common Stock

We have a dual class structure of common stock, with Class A common stock having one vote per share and Class B common stock having twenty votes per share. Class B
common stock is convertible into Class A common stock in circumstances specified in our restated charter. The terms of our restated charter contemplate that all outstanding
shares of Class B common stock will convert automatically into shares of Class A common stock, on a one for one basis, upon the first December 31 occurring in or after
2022 as of which the “October Market Cap” for the immediately preceding month of October exceeds $1.0 billion, provided that no such automatic conversion will ever occur
if the October Market Cap for the month of October in any year from 2018 through 2021 exceeds $1.0 billion. For these purposes, “October Market Cap” for a specified
month of October is equal to (a) the average of the daily volume weighted average trading prices of Class A common stock for each of the days in such month of October
multiplied by (b) the number of shares of common stock outstanding on the last trading day of such month of October.

The October Market Cap for October 2020 was $1.2 billion. As a result, no automatic conversion of Class B common stock into Class A common stock will ever occur under
the above-described restated charter provisions.

Under the restated charter, all outstanding shares of Class B common stock continue to be subject to automatic conversion into shares of Class A common stock, on a one for
one basis, upon the election of the holders of a majority of the then-outstanding shares of Class B common stock. In addition, each outstanding share of Class B common
stock  continues  to  be  convertible  into  one  share  of  Class  A  common  stock  (a)  at  any  time,  at  the  option  of  the  holder,  or  (b)  upon  any  transfer  of  such  share  of  Class  B
common stock, whether or not for value, except for certain transfers described in the restated charter, including transfers to family members, trusts solely for the benefit of the
stockholder or their family members, and partnerships, corporations, and other entities exclusively owned by the stockholder or their family members.

Holders of Class B common stock, who consist principally of our executive officers, employees, directors and their respective affiliates, collectively will continue to control a
majority of the combined voting power of common stock and therefore be able to control all matters submitted to our stockholders for approval for the foreseeable future.
Please read carefully “Item 1A. Risk Factors—Risks Related to Ownership of Class A Common Stock—The dual class structure of Class A common stock has the effect of
concentrating  voting  control  with  our  executive  officers  and  directors,  including  our  Chief  Executive  Officer  and  President,  which  will  limit  or  preclude  your  ability  to
influence corporate matters.”

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PRC Government Research and Development Funding

ACM  Shanghai  has  received  six  special  government  grants  from  the  PRC’s  Ministry  of  Science  and  Technology,  the  Shanghai  Municipal  Commission  of  Economy  and
Information, and the Shanghai Science and Technology Committee. The first grant, which was awarded in 2008, relates to the development and commercialization of 65nm to
45nm  stress-free  polishing  technology.  The  second  grant  was  awarded  in  2009  to  fund  interest  expense  on  short-term  borrowings.  The  third  grant  was  made  in  2014  and
relates to the development of electro copper-plating technology. The fourth grant was made in June 2018 and related to development of polytetrafluoroethylene. The fifth
grant was made in 2020, and relates to the development of Tahoe single bench cleaning technologies. The sixth grant was made in 2020, and relates to the development of
backside cleaning technologies. These governmental authorities provide the majority of the funding, although ACM Shanghai is also required to invest certain amounts in the
projects.

The governmental grants contain certain operating conditions, and we are required to go through a government due diligence process once the project is complete. The grants
therefore are recorded as long-term liabilities upon receipt, although we are not required to return any funds we receive. Grant amounts are recognized in our statements of
operations and comprehensive income as follows:

●

●

Government subsidies relating to current expenses are recorded as reductions of those expenses in the periods in which the current expenses are recorded. For the years
ended December 31, 2020, 2019 and 2018, related government subsidies recognized as reductions of relevant expenses in the consolidated statements of operations and
comprehensive income were $2.7 million , $3.2 million and $1.5 million, respectively.
Government subsidies related to depreciable assets are credited to income over the useful lives of the related assets for which the grant was received. For the years
ended December 31, 2020, 2019 and 2018, related government subsidies recognized as other income in the consolidated statements of operations and comprehensive
income were $149,000, $147,000 and $144,000, respectively.

Unearned  government  subsidies  received  are  deferred  for  recognition  and  recorded  as  other  long-term  liabilities  (see  note  13  in  the  Notes  to  Consolidated  Financial
Statements included herein under “Item 8. Financial Statements and Supplementary Data.”) in the balance sheet until the criteria for such recognition are satisfied.

Net Income Attributable to Non-Controlling Interests and Redeemable Non-Controlling Interests

As  described  above  under  “—Recent  Developments—STAR  Market  Listing  and  IPO”,  in  2019,  ACM  Shanghai  sold  a  total  number  of  shares  representing  8.3%  of  its
outstanding ACM Shanghai shares. ACM Research continues to hold the remaining 91.7% of ACM Shanghai’s outstanding shares. During the second quarter of 2020, the
redemption feature of the private placement funding terminated and the aggregate proceeds of the funding were reclassified from redeemable non-controlling interests to non-
controlling interests. As a result, we reflect, as net income attributable to non-controlling interests and redeemable non-controlling interests, the portion of our net income
allocable to the minority holders of ACM Shanghai shares.

How We Evaluate Our Operations

We present information below with respect to four measures of financial performance:

●

●

●

●

We define “shipments” of tools to include (a) a “repeat” delivery to a customer of a type of tool that the customer has previously accepted, for which we recognize
revenue  upon  delivery,  and  (b)  a  “first-time”  delivery  of  a  “first  tool”  to  a  customer  on  an  approval  basis,  for  which  we  may  recognize  revenue  in  the  future  if
contractual conditions are met and customer acceptance is received.
We  define  “adjusted  EBITDA”  as  our  net  income  excluding  interest  expense  (net),  income  tax  benefit  (expense),  depreciation  and  amortization,  and  stock-based
compensation. We define adjusted EBITDA to also exclude restructuring costs, although we have not incurred any such costs to date.
We define “free cash flow” as net cash provided by operating activities less purchases of property and equipment (net of proceeds from disposals) and of intangible
assets.
We define “adjusted operating income (loss)” as our income (loss) from operations excluding stock-based compensation.

These financial measures are not based on any standardized methodologies prescribed by accounting principles generally accepted in the United States, or GAAP, and are not
necessarily comparable to similarly titled measures presented by other companies.

We have presented shipments, adjusted EBITDA, free cash flow and adjusted operating income (loss) because they are key measures used by our management and board of
directors  to  understand  and  evaluate  our  operating  performance,  to  establish  budgets  and  to  develop  operational  goals  for  managing  our  business.  We  believe  that  these
financial measures help identify underlying trends in our business that could otherwise be masked by the effect of the expenses that we exclude. In particular, we believe that
the exclusion of the expenses eliminated in calculating adjusted EBITDA and adjusted operating income (loss) can provide useful measures for period-to-period comparisons
of our core operating performance and that the exclusion of property and equipment purchases from operating cash flow can provide a usual means to gauge our capability to
generate cash. Accordingly, we believe that these financial measures provide useful information to investors and others in understanding and evaluating our operating results,
enhancing the overall understanding of our past performance and future prospects, and allowing for greater transparency with respect to key financial metrics used by our
management in its financial and operational decision-making.

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Shipments, adjusted EBITDA, free cash flow and adjusted operating income (loss) are not prepared in accordance with GAAP, and should not be considered in isolation of, or
as an alternative to, measures prepared in accordance with GAAP.

Shipments

Shipments consist of two components:

●
●

a shipment to a customer of a type of tool that the customer has previously accepted, for which we recognize revenue when the tool is delivered; and
a  shipment  to  a  customer  of  a  type  of  tool  that  the  customer  is  receiving  and  evaluating  for  the  first  time,  in  each  case  a  “first  tool,”  for  which  we  may  recognize
revenue at a later date, subject to the customer’s acceptance of the tool upon the tool’s satisfaction of applicable contractual requirements.

“First tool” shipments can be made to either an existing customer that not previously accepted that specific type of tool in the past ─ for example, a delivery of a SAPS V tool
to a customer that previously had received only SAPS II tools ─ or to a new customer that has never purchased any tool from us.

Shipments totaled $182 million for 2020, $115 million for 2019 and $95 million for 2018.

The dollar amount attributed to a “first tool” shipment is equal to the consideration we expect to receive if any and all contractual requirements are satisfied and the customer
accepts  the  tool.  There  are  a  number  of  limitations  related  to  the  use  of  shipments  in  evaluating  our  business,  including  that  customers  have  significant  discretion  in
determining whether to accept our tools and their decision not to accept delivered tools is likely to result in our inability to recognize revenue from the delivered tools.

Adjusted EBITDA

There are a number of limitations related to the use of adjusted EBITDA rather than net income (loss), which is the nearest GAAP equivalent. Some of these limitations are:

●

●

●

●
●
●
●
●

●

adjusted  EBITDA  excludes  depreciation  and  amortization  and,  although  these  are  non-cash  expenses,  the  assets  being  depreciated  or  amortized  may  have  to  be
replaced in the future;
we exclude stock-based compensation expense from adjusted EBITDA and adjusted operating income (loss), although (a) it has been, and will continue to be for the
foreseeable future, a significant recurring expense for our business and an important part of our compensation strategy and (b) if we did not pay out a portion of our
compensation in the form of stock-based compensation, the cash salary expense included in operating expenses would be higher, which would affect our cash position;
the expenses and other items that we exclude in our calculation of adjusted EBITDA may differ from the expenses and other items, if any, that other companies may
exclude from adjusted EBITDA when they report their operating results;
adjusted EBITDA does not reflect changes in, or cash requirements for, working capital needs;
adjusted EBITDA does not reflect interest expense, or the requirements necessary to service interest or principal payments on debt;
adjusted EBITDA does not reflect income tax expense (benefit) or the cash requirements to pay taxes;
adjusted EBITDA does not reflect historical cash expenditures or future requirements for capital expenditures or contractual commitments;
although  depreciation  and  amortization  charges  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 cash requirements for such replacements; and
adjusted  EBITDA  includes  expense  reductions  and  non-operating  other  income  attributable  to  PRC  governmental  grants,  which  may  mask  the  effect  of  underlying
developments  in  net  income,  including  trends  in  current  expenses  and  interest  expense,  and  free  cash  flow  includes  the  PRC  governmental  grants,  the  amount  and
timing of which can be difficult to predict and are outside our control.

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The following table reconciles net income, the most directly comparable GAAP financial measure, to adjusted EBITDA:

Adjusted EBITDA Data:
Net Income

Interest expense, net
Income tax expense (benefit)
Depreciation and amortization
Stock based compensation
Change in fair value of financial liability
Unrealized gain on trading securities

Adjusted EBITDA

2020

Year Ended December 31,
2019
(in thousands)

2018

  $

  $

21,677    $
85     
(2,382)    
1,055     
5,628     
11,964     
(12,574)    
25,453    $

19,458    $
412     
(518)    
788     
3,572     
-     
-     
23,712    $

6,574 
469 
806 
417 
3,363 
- 
- 
11,629 

Adjusted EBITDA was $25.5 million in 2020, as comparted to $23.7 million in 2019 and $11.6 million in 2018.  The increase of $1.7 million from 2019 to 2020 reflected an
increase of $2.2 million in net income, and an increase of $2.1 million of stock-based compensation, offset by a $1.9 million higher income tax benefit and the offsetting
impact  of  change  in  fair  value  of  financial  liability  and  unrealized  gain  on  trading  securities.      The  increase  of  $12.1  million  from  2018  to  2019    reflected  principally  an
increase of $12.9 million in net income, a $0.4 million increase in depreciation and amortization, and a $0.2 million increase in stock-based compensation, partly offset by a
$1.3 million decrease in income tax expense (benefit).

We do not exclude from adjusted EBITDA expense reductions and non-operating other income attributable to PRC governmental grants because we consider and incorporate
the expected amounts and timing of those grants in incurring expenses and capital expenditures. If we did not receive the grants, our cash expenses therefore would be lower,
and our cash position would not be affected, to the extent we have accurately anticipated the amounts of the grants. For additional information regarding our PRC grants,
please see “—Key Components of Results of Operations—PRC Government Research and Development Funding.”

Free Cash Flow

The following table reconciles net cash provided by (used in) operating activities, the most directly comparable GAAP financial measure, to free cash flow:

Free Cash Flow Data:
Net cash used (provided by) in operating activities
Purchase property and equipment
Purchase of intangible assets
Purchase of land-use-right
Prepayment for property
Purchase of trading securities
Free cash flow

Year Ended December 31,

2020 

2019   

2018 

(in thousands)

  $

  $

(13,547)   $
(5,211)  
(324)  
(9,744)  
(40,206)  
(15,020)  
(84,052)   $

9,403    $
(971)    
(154)    
-     
-     
-     
8,278    $

6,909 
(1,830)
(241)
- 
- 
- 
4,838 

Free cash flow in 2020 declined by $92.3 million as compared to 2019,  due to a prepayment for property of $40.2 million,  a net decline of $23.0 million of cash from
operations,  $15.0  million  purchase  of  trading  securities,  $9.7  million  purchase  of  land-use  right,  and  a  $4.2  million  increase  in  purchase  of  property  and  equipment  and
intangible assets.  Free cash flow in 2019, as compared to 2018, reflected the factors driving net cash provided by operating activities, principally increase in net income,
offset  by  an  increase  in  accounts  receivable,  inventory  and  deferred  taxes,  and  a  decrease  in  accounts  payable.  Consistent  with  our  methodology  for  calculating  adjusted
EBITDA,  we  do  not  adjust  free  cash  flow  for  the  effects  of  PRC  government  subsidies,  because  we  take  those  subsidies  into  account  in  incurring  expenses  and  capital
expenditures.

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Adjusted Operating Income

Adjusted  operating  income  excludes  stock-based  compensation  from  income  (loss)  from  operations.  Although  stock-based  compensation  is  an  important  aspect  of  the
compensation  of  our  employees  and  executives,  determining  the  fair  value  of  certain  of  the  stock-based  instruments  we  utilize  involves  a  high  degree  of  judgment  and
estimation  and  the  expense  recorded  may  bear  little  resemblance  to  the  actual  value  realized  upon  the  vesting  or  future  exercise  of  the  related  stock-based  awards.
Furthermore, unlike cash compensation, the value of stock options, which is an element of our ongoing stock-based compensation expense, is determined using a complex
formula that incorporates factors, such as market volatility, that are beyond our control. Management believes it is useful to exclude stock-based compensation in order to
better  understand  the  long-term  performance  of  our  core  business  and  to  facilitate  comparison  of  our  results  to  those  of  peer  companies.  The  use  of  non-GAAP  financial
measures excluding stock-based compensation has limitations, however. If we did not pay out a portion of our compensation in the form of stock-based compensation, the
cash  salary  expense  included  in  operating  expenses  would  be  higher  and  our  cash  holdings  would  be  less.  The  following  tables  reflect  the  exclusion  of  stock-based
compensation, or SBC, from line items comprising income (loss) from operations:

`

Revenue
Cost of revenue
Gross profit
Operating expenses:

2020

SBC

Actual
(GAAP)

Year Ended December 31,
2019

Adjusted
(Non-
GAAP)

Actual
(GAAP)

Adjusted
(Non-
GAAP)

Actual
(GAAP)

SBC
(in thousands)

2018

SBC

Adjusted
(Non-
GAAP)

  $

156,624    $
(87,025)    
69,599     

-    $
(175)    
(175)    

156,624    $
(86,850)    
69,774     

107,524    $
(56,870)    
50,654     

-    $
(250)    
(250)    

107,524    $
(56,620)    
50,904     

74,643    $
(40,194)    
34,449     

-    $
(71)    
(71)    

Sales and marketing
Research and development
General and administrative
Income (loss) from operations   

(16,773)    
(19,119)    
(12,215)    
21,492     

(1,199)    
(763)    
(3,491)    
(5,628)    

(15,574)    
(18,356)    
(8,724)    
27,120     

(11,902)    
(12,900)    
(8,061)    
17,791     

(328)    
(1,093)    
(1,901)    
(3,572)    

(11,574)    
(11,807)    
(6,160)    
21,363     

(9,611)    
(10,380)    
(7,987)    
6,471     

(120)    
(255)    
(2,917)    
(3,363)    

74,643 
(40,123)
34,520 

(9,491)
(10,125)
(5,070)
9,834 

Adjusted operating income in 2020, as compared to 2019 reflected increases in operating income of $3.7 million and stock-based compensation of $2.0 million.  Adjusted
operating income in 2019, as compared to 2018 reflected increases in operating income of $11.5 million and stock-based compensation of $0.2 million.

Critical Accounting Policies and Estimates

In preparing our consolidated financial statements in conformity with GAAP, we make assumptions, judgments and estimates in applying our accounting policies that can
have a significant impact on our revenue, operating income and net income, as well as on the value of certain assets and liabilities on our consolidated balance sheets. We base
our assumptions, judgments and estimates on historical experience and various other factors that we believe to be reasonable under the circumstances. At least quarterly, we
evaluate  our  assumptions,  judgments  and  estimates  and  make  changes  as  deemed  necessary.  Actual  results  could  differ  materially  from  these  estimates  under  different
assumptions or conditions.

We  believe  that  the  assumptions,  judgments  and  estimates  involved  in  the  accounting  for  the  following  accounting  policies  have  the  greatest  potential  impact  on  our
consolidated financial statement, and we therefore consider these to be our critical accounting estimates. For information on our significant accounting policies, see Note 2 in
the notes to consolidated financial statements.

Revenue Recognition

We derive revenue principally from the sale of single-wafer wet cleaning equipment. Revenue from contracts with customers is recognized using the following five steps
pursuant to the ASC Topic 606, Revenue from Contracts with Customers:

1.

2.

3.

4.

5.

identify the contract(s) with a customer;

identify the performance obligations in the contract;

determine the transaction price;

allocate the transaction price to the performance obligations in the contract; and

recognize revenue when (or as) the entity satisfies a performance obligation.

A contract contains a promise (or promises) to transfer goods or services to a customer. A performance obligation is a promise (or a group of promises) that is distinct. The
transaction price is the amount of consideration a company expects to be entitled from a customer in exchange for providing the goods or services.

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The  unit  of  account  for  revenue  recognition  is  a  performance  obligation  (a  good  or  service).  A  contract  may  contain  one  or  more  performance  obligations.  Performance
obligations are accounted for separately if they are distinct. A good or service is distinct if the customer can benefit from the good or service either on its own or together with
other resources that are readily available to the customer, and the good or service is distinct in the context of the contract. Otherwise performance obligations are combined
with other promised goods or services until we identify a bundle of goods or services that is distinct. Promises in contracts which do not result in the transfer of a good or
service  are  not  performance  obligations,  as  well  as  those  promises  that  are  administrative  in  nature,  or  are  immaterial  in  the  context  of  the  contract.  We  have  addressed
whether various goods and services promised to the customer represent distinct performance obligations. We applied the guidance of ASC Topic 606-10-25-16 through 18 in
order to verify which promises should be assessed for classification as distinct performance obligations. Our contracts with customers include more than one performance
obligation. For example, the delivery of a piece of equipment generally includes the promise to install the equipment in the customer’s facility. Our performance obligations in
connection with a sale of equipment generally include production, delivery and installation, together with the provision of a warranty.

The transaction price is allocated to all the separate performance obligations in an arrangement. It reflects the amount of consideration to which we expect to be entitled in
exchange  for  transferring  goods  or  services,  which  may  include  an  estimate  of  variable  consideration  to  the  extent  that  it  is  probable  of  not  being  subject  to  significant
reversals in the future based on our experience with similar arrangements. The transaction price excludes amounts collected on behalf of third parties, such as sales taxes. This
is done on a relative selling price basis using standalone selling prices, or SSP. The SSP represents the price at which we would sell that good or service on a standalone basis
at the inception of the contract. Given the requirement for establishing SSP for all performance obligations, if the SSP is directly observable through standalone sales, then
such sales should be considered in the establishment of the SSP for the performance obligation. All of our products were sold in stand-alone arrangements, we do not have
observable  SSPs  for  most  performance  obligations  as  they  are  not  regularly  sold  on  a  standalone  basis.  Production,  delivery  and  installation  of  a  product,  together  with
provision of a warranty, are a single unit of accounting.

We recognize revenue when we satisfy each performance obligation by transferring control of the promised goods or services to the customer. Goods or services can transfer
at  a  point  in  time  (upon  the  acceptance  of  the  products  or  upon  the  arrival  at  the  destination  as  stipulated  in  the  shipment  terms)  in  a  sale  arrangement.  In  general,  we
recognize revenue when a tool has been demonstrated to meet the customer’s predetermined specifications and is accepted by the customer. If terms of the sale provide for a
lapsing  customer  acceptance  period,  we  recognize  revenue  as  of  the  earlier  of  the  expiration  of  the  lapsing  acceptance  period  and  customer  acceptance.  In  the  following
circumstances, however, we recognize revenue upon shipment or delivery, when legal title to the tool is passed to a customer as follows:

●

●

●

●

when the customer has previously accepted the same tool with the same specifications and we can objectively demonstrate that the tool meets all of the required
acceptance criteria;
when  the  sales  contract  or  purchase  order  contains  no  acceptance  agreement  or  lapsing  acceptance  provision  and  we  can  objectively  demonstrate  that  the  tool
meets all of the required acceptance criteria;
when the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as
intended and meets predetermined specifications; or
when our sales arrangements do not include a general right of return.

We  offer  post-warranty  period  services,  which  consist  principally  of  the  installation  and  replacement  of  parts  and  small-scale  modifications  to  the  equipment.  The  related
revenue and costs of revenue are recognized when parts have been delivered and installed, risk of loss has passed to the customer, and collection is probable. We do not expect
revenue from extended maintenance service contracts to represent a material portion of its revenue in the future.

We  incur  costs  related  to  the  acquisition  of  its  contracts  with  customers  in  the  form  of  sales  commissions.  Sales  commissions  are  paid  to  third  party  representatives  and
distributors. Contractual agreements with these parties outline commission structures and rates to be paid. Generally speaking, the contracts are all individual procurement
decisions by the customers and are not for significant periods of time, nor do they include renewal provisions. As such, all contracts have an economic life of significantly less
than a year. Accordingly, we expense sales commissions when incurred. These costs are recorded within sales and marketing expenses.

We do not incur any costs to fulfill the contracts with customers that are not already reported in compliance with another applicable standard (for example, inventory or plant,
property and equipment).

Stock-Based Compensation

We account for grants of stock options based on their grant date fair value and recognize compensation expense over the vesting periods. We estimate the fair value of stock
options as of the date of grant using the Black-Scholes option pricing model.

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Stock-based compensation expense represents the cost of the grant date fair value of employee stock option grants recognized over the requisite service period of the awards
(usually  the  vesting  period)  on  a  straight-line  basis,  net  of  estimated  forfeitures.  We  estimate  the  fair  value  of  stock  option  grants  using  the  Black-Scholes  option  pricing
model, which requires the input of subjective assumptions, including (a) the risk-free interest rate, (b) the expected volatility of our stock, (c) the expected term of the award
and (d) the expected dividend yield.
●
●
●

We use the market closing price for the Class A common stock as reported on the Nasdaq Global Market to determine the fair value of the Class A common stock.
The risk-free interest rates for periods within the expected life of the option are based on the yields of zero-coupon U.S. Treasury securities.
Due to a lack of company-specific historical and implied volatility data, we have based our estimate of expected volatility on the historical volatility of a group of
similar  companies  that  are  publicly  traded.  For  these  analyses,  we  have  selected  companies  with  comparable  characteristics  to  ours  including  enterprise  value,  risk
profile,  position  within  the  industry,  and  with  historical  share  price  information  sufficient  to  meet  the  expected  life  of  the  stock-based  awards.  We  compute  the
historical volatility data using the daily closing prices for the selected companies’ shares during the equivalent period of the calculated expected term of our stock-
based  awards.  We  will  continue  to  apply  this  process  until  a  sufficient  amount  of  historical  information  regarding  the  volatility  of  our  own  stock  price  becomes
available.
The expected term represents the period of time that options are expected to be outstanding. The expected term of stock options is based on the average between the
vesting period and the contractual term for each grant according to Staff Accounting Bulletin No. 110.
The expected dividend yield is assumed to be 0%, based on the fact that we have never paid cash dividends and have no present intention to pay cash dividends.

●

●

Inventory

Inventories consist of finished goods, raw materials, work-in-process and consumable materials. Finished goods are comprised of direct materials, direct labor, depreciation
and  manufacturing  overhead.  Inventory  is  stated  at  the  lower  of  cost  and  net  recognizable  value  of  the  inventory  at  December  31,  2020  and  2019.  The  cost  of  a  general
inventory item is determined using the weighted average method. The cost of an inventory item purchased specifically for a customized tool is determined using the specific
identification method. Market value is determined as the lower of replacement cost and net realizable value, which is the estimated selling price, in the ordinary course of
business, less estimated costs to complete or dispose.

We  assess  the  recoverability  of  all  inventories  quarterly  to  determine  if  any  adjustments  are  required.  We  write  down  excess  or  obsolete  tool-related  inventory  based  on
management’s  analysis  of  inventory  levels  and  forecasted  12-month  demand  and  technological  obsolescence  and  spare  parts  inventory  based  on  forecasted  usage.  These
factors are affected by market and economic conditions, technology changes, new product introductions and changes in strategic direction, and they require estimates that may
include uncertain elements. Actual demand may differ from forecasted demand, and those differences may have a material effect on recorded inventory values. We had an
inventory reserve of $1.1 million at December 31, 2020 and had no inventory reserve at December 31, 2019.

Our manufacturing overhead standards for product costs are calculated assuming full absorption of forecasted spending over projected volumes, adjusted for excess capacity.
Abnormal inventory costs such as costs of idle facilities, excess freight and handling costs, and spoilage are recognized as current period charges.

Allowance for Doubtful Accounts

Accounts receivable are reflected in our consolidated balance sheets at their estimated collectible amounts. A substantial majority of our accounts receivable are derived from
sales to large multinational semiconductor manufacturers in Asia. We follow the allowance method of recognizing uncollectible accounts receivable, pursuant to which we
regularly assess our ability to collect outstanding customer invoices and make estimates of the collectability of accounts receivable. We provide an allowance for doubtful
accounts when we determine that the collection of an outstanding customer receivable is not probable. The allowance for doubtful accounts is reviewed on a quarterly basis to
assess the adequacy of the allowance. We take into consideration (a) accounts receivable and historical bad debts experience, (b) any circumstances of which we are aware of
a  customer’s  inability  to  meet  its  financial  obligations,  (c)  changes  in  our  customer  payment  history,  and  (d)  our  judgments  as  to  prevailing  economic  conditions  in  the
industry and the impact of those conditions on our customers. If circumstances change, such that the financial conditions of our customers are adversely affected and they are
unable to meet their financial obligations to us, we may need to record additional allowances, which would result in a reduction of our net income.  No allowance for doubtful
accounts was considered necessary at December 31, 2020 or 2019.

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Valuation of Long-Lived Assets

Long-lived assets are evaluated for impairment whenever events or changes in circumstance indicate that the carrying value of an asset may not be fully recoverable or that
the useful life is shorter than we had originally estimated. When these events or changes occur, we evaluate the impairment of the long-lived assets by comparing the carrying
value  of  the  assets  to  an  estimate  of  future  undiscounted  cash  flows  expected  to  be  generated  from  the  use  of  the  assets  and  their  eventual  disposition.  If  the  sum  of  the
expected future undiscounted cash flow is less than the carrying value of the assets, we recognize an impairment loss based on the excess of the carrying value over the fair
value. No impairment charge was recognized in 2020 and 2019.

Income Taxes

Income  taxes  are  accounted  for  using  the  liability  method.  Under  this  method,  deferred  income  tax  assets  and  liabilities  are  recognized  for  the  future  tax  consequences
attributable to temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred income tax
assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which these temporary differences are expected to be recovered
or  settled.  The  effect  on  deferred  tax  assets  and  liabilities  of  a  change  in  tax  rates  is  recognized  in  income  in  the  period  that  includes  the  enactment  date.  A  valuation
allowance would be provided for the deferred tax assets if it is more likely than not that the related benefit will not be realized.

On  a  quarterly  basis,  we  provide  income  tax  provisions  based  upon  an  estimated  annual  effective  income  tax  rate.  The  effective  tax  rate  is  highly  dependent  upon  the
geographic  composition  of  worldwide  earnings,  tax  regulations  governing  each  region,  availability  of  tax  credits  and  the  effectiveness  of  our  tax  planning  strategies.  We
carefully monitor the changes in many factors and adjust our effective income tax rate on a timely basis. If actual results differ from these estimates, this could have a material
effect on our financial condition and results of operations.

We maintained a partial valuation allowance as of December 31, 2020 with respect to certain net deferred tax assets based on our estimates of recoverability. We determined
that  the  partial  valuation  allowance  was  appropriate  given  our  historical  operating  losses  and  uncertainty  with  respect  to  our  ability  to  generate  profits  from  our  business
model sufficient to take advantage of the deferred tax assets in all applicable tax jurisdictions.

The  calculation  of  our  tax  liabilities  involves  dealing  with  uncertainties  in  the  application  of  complex  tax  regulations.  In  accordance  with  the  authoritative  guidance  on
accounting for uncertainty in income taxes, we recognize liabilities for uncertain tax positions based on the two-step process. The first step is to evaluate the tax position for
recognition  by  determining  if  the  weight  of  available  evidence  indicates  that  it  is  more  likely  than  not  that  the  position  will  be  sustained  in  audit,  including  resolution  of
related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than fifty-percent likely of being realized upon
ultimate settlement. We reevaluate these uncertain tax positions on a quarterly basis. This evaluation is based on factors including changes in facts or circumstances, changes
in tax law, effectively settled issues under audit and new audit activity. Any change in these factors could result in the recognition of a tax benefit or an additional charge to
the tax provision.

Interest and penalties related to uncertain tax positions are recorded in the provision for income tax expense on the consolidated statements of operations.

Warranty

We have provided standard warranty coverage on our tools for 12 to 36 months, covering labor and parts necessary to repair a tool during the warranty period. We account for
the  estimated  warranty  cost  as  sales  and  marketing  expense  at  the  time  revenue  is  recognized.  Warranty  obligations  are  affected  by  historical  failure  rates  and  associated
replacement costs. Utilizing historical warranty cost records, we calculate a rate of warranty expenses to revenue to determine the estimated warranty charge. We update these
estimated charges on a regular basis. The actual product performance and field expense profiles may differ, and in those cases we adjust our warranty accruals accordingly. 
As of December 31, 2020 and 2019, we had accrued $4.0 million and $2.8 million, respectively, in liability contingency for potential warranty claims.

Financial Liability Carried at Fair Value

As  described  in  note  16  in  the  Notes  to  Consolidated  Financial  Statements,  in  preparation  for  the  STAR  IPO  we  entered  into  two  agreements  with  Shengxin  (Shanghai)
Management Consulting Limited Partnership, or SMC, relating to outstanding obligations for which we had agreed to deliver certain consideration. We accounted for this
consideration as a financial liability and applied fair value option methodology to measure the consideration in accordance with ASC 825-10-15-4a. On July 29, 2020 we
entered into an amended agreement with SMC under which, in settlement of the financial liability, we issued to SMC a warrant to purchase shares of Class A common stock.
The financial liability was remeasured to fair value as of July 29, 2020 and was retired upon issuance of the warrant. The warrant was initially measured at fair value at the
issuance date and classified as equity permanently in accordance with ASC Topic 815, Derivatives and Hedging. Estimates related to this item required significant judgment,
and a change in the estimates could have a material effect on our results of operations during the periods involved.

Recent Accounting Pronouncements

For a discussion of recent accounting pronouncements impacting our company, see note 2 in the Notes to Consolidated Financial Statements included herein under “Item 8.
Financial Statements and Supplementary Data.”

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Results of Operations

The following table sets forth our results of operations for the periods presented, as percentages of revenue.

Revenue
Cost of revenue

Gross margin
Operating expenses:

Sales and marketing
Research and development
General and administrative

Total operating expenses, net
Income from operations
Interest income (expense), net
Change in fair value of financial liability
Unrealized gain on trading securities
Other income (expense), net
Equity income in net income of affiliates
Income before income taxes

Income tax benefit (expense)

Net income

Less: Net income attributable to non-controlling interests and redeemable non-controlling interests    
Net income attributable to ACM Research, Inc.

Comparison of Year Ended December 31, 2020, 2019 and 2018

Year Ended December 31,
2019

2020

2018

100.0%   
55.6 
44.4 

100.0%   
52.9 
47.1 

100.0%
53.8 
46.2 

10.7 
12.2 
7.8 
30.7 
13.7 
(0.1)    
(7.6)    
8.0 
(2.2)    
0.4 
12.3 
1.5 
13.8 
1.8 
12.0%   

11.1 
12.0 
7.5 
30.6 
16.5 
(0.4)    
- 
- 
1.3 
0.2 
17.6 
0.5 
18.1 
0.4 
17.7%   

12.9 
13.9 
10.7 
37.5 
8.7 
(0.6)
- 
- 
1.7 
0.2 
9.9 
(1.1)
8.8 
- 
8.8%

Revenue

`
Revenue

`

Year Ended December 31,

2020

2019   

2018   

(in thousands)

% Change
2020 v 2019  

% Change
2019 v 2018  

  $

156,624    $

107,524    $

74,643     

45.7%   

44.1%

Single Wafer Cleaning, Tahoe and Semi-Critical Cleaning Equipment
ECP (front-end and packaging), Furnace and Other Technologies
Advanced Packaging (excluding ECP), Services & Spares
Total Revenue By Product Category

Wet cleaning and other front-end processing tools
Advanced packaging, other back-end processing tools, services and spares
Total Revenue Front-end and Back-End

Year Ended December 31,
2019

2020

2018

131,248 
13,343 
12,033 
156,624 

136,317 
20,307 
156,624 

90,501     
6,900     
10,124     
107,524     

90,935     
16,590     
107,524     

68,341 
- 
6,302 
74,643 

68,366 
6,277 
74,643 

Revenue  for  2020  compared  to  2019  increased  by  $49.1  million.  The  increase  was  due  to  a  $45.4  million  increase  in  revenue  from  wet  cleaning  and  other  front-end
processing tools, and a $3.7 million increase in revenue from advanced packaging and other back-end processing tools, services and spares. Revenue for 2019 compared to
2018 increased by $32.9 million. The increase was due to a $22.4 million increase in revenue from wet cleaning and other front-end processing tools, and a $10.5 million
increase in revenue from advanced packaging, other back-end processing tools, services and spares.

Cost of Revenue and Gross Margin

Cost of revenue
Gross profit
Gross margin

Year Ended December 31,

2020

2019 

2018 

(in thousands)

% Change
2020 v 2019  

% Change
2019 v 2018  

  $

87,025 
69,599 

  $

44.4%   

56,870 
50,654 

  $

47.1%   

40,194 
34,449 

46.2%   

53.0%   
37.4%   
-2.7 

41.5%
47.0%
0.9 

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Cost of revenue increased $30.1 million, and gross profit increased $18.9 million, for 2020 compared to 2019, reflecting the growth in sales at lower gross margin levels.
Gross margin decreased by 267 basis points, primarily due to  differences in product mix in 2020 versus 2019.  Cost of revenue increased $16.7 million, and gross profit
increased $16.2 million, for 2019 compared to 2018, reflecting the growth in sales. Gross margin increased by 96 basis points, primarily due to  differences in product mix in
2019 versus 2018.

Operating Expenses

Sales and marketing expense
Research and development expense
General and administrative expense
Total operating expenses

Year Ended December 31,

2020

2019   

2018   

(in thousands)

% Change
2020 v 2019  

% Change
2019 v 2018  

  $

  $

16,773    $
19,119     
12,215     
48,107    $

11,902    $
12,900     
8,061     
32,863    $

9,611     
10,380     
7,987     
27,978     

40.9%   
48.2%   
51.5%   
46.4%   

23.8%
24.3%
0.9%
17.5%

Sales and marketing expense increased by $4.9 million for 2020 as compared to 2019, primarily due to an increase in employee count, salaries, stock-based compensation, 
and sales commissions.  Sales and marketing expense increased by $2.3 million for 2019 as compared to 2018, primarily due to an increase in employee count, salaries and
sales commissions.

Research  and  development  expense  increased  $6.2  million  for  2020  as  compared  to  2019,  primarily  due  to  an  increase  in  employee  count,  salaries  and  research  and
development parts. Research and development expense represented 12.2% and 12.0% of our revenue in 2020 and 2019, respectively. Without reduction by grant amounts
received from PRC governmental authorities (see “—Key Components of Results of Operations—PRC Government Research and Development Funding”), gross research
and development expense totaled $21.2 million, or 13.6% of revenue, in 2020 and $16.1 million, or 14.9% of revenue, in 2019.

Research  and  development  expense  increased  $2.5  million  for  2019  as  compared  to  2018,  primarily  due  to  an  increase  in  employee  count,  salaries  and  research  and
development parts. Research and development expense represented 12.0% and 13.9% of our revenue in 2019 and 2018, respectively. Without reduction by grant amounts
received from PRC governmental authorities (see “—Key Components of Results of Operations—PRC Government Research and Development Funding”), gross research
and development expense totaled $16.1 million, or 14.9% of revenue, in 2019 and $11.9 million, or 15.9% of revenue, in 2018.

General  and  administrative  expense  increased  $4.2  million  for  2020  as  compared  to  2019,  primarily  due  to  an  increase  in  stock-based  compensation,  increased  employee
count, and an increase in legal, payroll tax and other fees.  General and administrative expense increased $0.1 million for 2019 as compared to 2018.

Change in fair value of financial liability and trading securities

Year Ended December 31,

2020

2019   

2018   

(in thousands)

% Change
2020 v 2019  

% Change
2019 v 2018  

Change in fair value of financial liability
Unrealized gain on trading securities

  $

(11,964)   $
12,574     

-    $
-     

-     
-     

100.0%   
100.0%   

0.0%
0.0%

Change in fair value of financial liability was ($12.0) million for 2020 as compared to $0 for 2019 and 2018.  The decrease in 2020 was due to the non-cash, non-operating
expense related to transactions as described in note 16.  Unrealized gain on trading securities was $12.6 million for 2020 as compared to $0 for 2019 and 2018, due to an
increase in the market value of securities purchased from the original cost basis in July of 2020 to the closing price on December 31, 2020 as described in note 15.

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Other Income and Expenses

Interest Income
Interest Expense
Interest Income (expense), net

Other income (expense), net

Year Ended December 31,

2020

2019   

2018   

(in thousands)

% Change
2020 v 2019  

% Change
2019 v 2018  

897    $
(982)    
(85)   $

333    $
(745)    
(412)   $

29     
(498)    
(469)    

169.4%   
31.8%   
-79.4%   

1048.3%
49.6%
-12.2%

(3,377)   $

1,393    $

1,255     

-342.4%   

11.0%

  $

  $

  $

Interest expense, net, consists of interest incurred from outstanding short-term borrowings, offset by interest earned on net cash balances.  Interest expense, net, decreased to
$85,000 in 2020 from $412,000 in 2019, principally as a result of increased interest income earned from higher cash balances, partly offset by increased interest expenses
incurred from higher short term bank loans.  Interest expense, net, decreased to $412,000 in 2019 from $469,000 in 2018, principally as a result of increased interest income
earned from higher cash balances, partly offset by increased interest expenses incurred from higher short term bank loans.

Other income, net primarily reflects (a) gains or losses recognized from the effect of exchange rates on our foreign currency-denominated asset and liability balances and (b)
depreciation of assets acquired with government subsidies, as described under “—Key Components of Results of Operations—PRC Government Research and Development
Funding” above. Our other income (expense) was ($3.4 million) million in 2020 due primarily to a stronger RMB to U.S. dollar exchange rate, compared to other income of
$1.4 million in 2019 due to a weaker RMB to U.S. dollar exchange rate, and other income of $1.3 million in 2018 due to a weaker RMB to U.S. dollar exchange rate.

Income Tax Benefit (Expense)

The following presents components of income tax benefit (expense) for the indicated periods:

Current:

U.S. federal
U.S. state
Foreign
Total current tax expense

Deferred:

U.S. federal
U.S. state
Foreign

Total deferred tax benefit
Total  income tax benefit (expense)

2020

Year Ended December 31,
2019
(in thousands)

2018

  $

  $

(61)  
(2)  
(2,014)  
(2,077)  

7,325 
- 

(2,866)  
4,459 
2,382 

  $

    $

(3,176)    
(3,176)    

3,728     

(34)    
3,694     
518    $

- 
- 
(1,149)
(1,149)

- 
- 
343 
343 
(806)

As we collect and prepare necessary data, and interpret the Tax Cuts and Jobs Act of 2017 and any additional guidance issued by the U.S. Treasury Department, the Internal
Revenue Service, and other standard-setting bodies, we may make adjustments to the provisional amounts. Those adjustments may materially affect our provision for income
taxes and effective tax rate in the period in which the adjustments are made. There were no adjustments made in 2020.

Our  effective  tax  rate  differs  from  statutory  rates  of  21%  for  U.S.  federal  income  tax  purposes  and  15%  to  25%  for  PRC  income  tax  purposes  due  to  the  effects  of  the
valuation  allowance  and  certain  permanent  differences  as  it  pertains  to  book-tax  differences  in  the  value  of  client  equity  securities  received  for  services.  Our  three  PRC
subsidiaries, ACM Shanghai, ACM Wuxi, and ACM Shengwei, are liable for PRC corporate income taxes at the rates of 15%, 25%, and 25%, respectively. Pursuant to the
Corporate Income Tax Law of the PRC, our PRC subsidiaries generally would be liable for PRC corporate income taxes as a rate of 25%. According to Guoshuihan 2009 No.
203, an entity certified as an “advanced and new technology enterprise” is entitled to a preferential income tax rate of 15%. ACM Shanghai was certified as an “advanced and
new technology enterprise” in 2012, in 2016, and again in 2018, with an effective period of three years.

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We file income tax returns in the United States and state and foreign jurisdictions. Those federal, state and foreign income tax returns are under the statute of limitations
subject to tax examinations for 1999 through 2020. To the extent we have tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted
upon examination by the Internal Revenue Service or state or foreign tax authorities to the extent utilized in a future period.

Liquidity and Capital Resources

During 2020, we funded our technology development and operations principally through our beginning cash balance,  short-term borrowings by ACM Shanghai from local
financial institutions, and the release of the voluntary restrictions we had applied to cash proceeds from the private placement of ACM Shanghai shares, as described below.

We believe our existing cash and cash equivalents, our cash flow from operating activities, and short-term bank borrowings by ACM Shanghai will be sufficient to meet our
anticipated cash needs for at least the next twelve months. We do not expect that our anticipated cash needs for the next twelve months will require our receipt of any PRC
government subsidies. Our future working capital needs will depend on many factors, including the rate of our business and revenue growth, the payment schedules of our
customers,  and  the  timing  of  investment  in  our  research  and  development  as  well  as  sales  and  marketing.  To  the  extent  our  cash  and  cash  equivalents,  cash  flow  from
operating activities and short-term bank borrowings are insufficient to fund our future activities in accordance with our strategic plan, we may determine to raise additional
funds through public or private debt or equity financings or additional bank credit arrangements. We also may need to raise additional funds in the event we determine in the
future to effect one or more acquisitions of businesses, technologies and products. If additional funding is necessary or desirable, we may not be able to obtain bank credit
arrangements or to affect an equity or debt financing on terms acceptable to us or at all.

In 2020 ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc., entered into a Grant Contract for State-owned Construction Land Use
Right in Shanghai City (Category of R&D Headquarters and Industrial Projects), or the Grant Agreement, with the China (Shanghai) Pilot Free Trade Zone Lin-gang Special
Area Administration. Shengwei Research (Shanghai), Inc.  obtained rights to use approximately 43,000 square meters (10.6 acres) of land in the Lingang Heavy Equipment
Industrial Zone of Lin-gang Special Area of China (Shanghai) Pilot Free Trade Zone for a period of fifty years, commencing on the date of delivery of the land in July 2020,
which we refer to as the Delivery Date.

In exchange for its land use rights, Shengwei Research (Shanghai), Inc. paid aggregate grant fees of RMB 61.7 million ($9.5 million), and a performance deposit of RMB
12.3 million ($1.9 million), which is equal to 20% of the aggregate grant fees, to secure its achievement of the following performance milestones:

•
•
•

the start of construction within 6 months after the Delivery Date (60% of the performance deposit);
the completion of construction within 30 months after the Delivery Date (20% of the performance deposit); and
the start of production within 42 months after the Delivery Date (20% of the performance deposit.

Upon satisfaction of a milestone, the portion of the performance deposit attributable to that milestone will be repayable to Shengwei Research (Shanghai), Inc.  within ten
business days. If the achievement of any of the above milestones is delayed or abandoned, Shengwei Research (Shanghai), Inc. may be subject to additional penalties and may
lose its rights to both the use of the granted land and any partially completed facilities on that land.

Covenants in the Grant Agreement require that, among other things, Shengwei Research (Shanghai), Inc. will be required to pay liquidated damages in the event that (a) it
does not make a total investment  (including the costs of construction, fixtures, equipment and grant fees) of at least RMB 450.0 million ($63.4 million) or (b) within six years
after the Delivery Date, we do not (i) generate a minimum specified amount of annual sales of products manufactured on the granted land or (ii) pay to the PRC at least RMB
157.6  million  ($22.2  million)  in  annual  total  taxes  (including  value-added  taxes,  corporate  income  tax,  personal  income  taxes,  urban  maintenance  and  construction  taxes,
education surcharges, stamp taxes, and vehicle and shipping taxes) as a result of operations in connection with the granted land.

Sources of Funds

Equity and Equity-related Securities. During the year ended December 31, 2020, we received proceeds of $2.7 million from sales of Class A common stock pursuant to option
exercises.

Release of Voluntarily Restricted Proceeds. During the year ended December 31, 2020, we released the restrictions on $58.8 million of the cash proceeds received from the
private  placement  investors  that  purchased  ACM  Shanghai  shares  in  anticipation  of  the  STAR  Listing  (see  “—Recent  Developments—STAR  Market  Listing  and  IPO”).
Previously, due to the investors’ redemption rights, we had voluntarily chosen to hold the proceeds as restricted cash. These redemption rights were removed upon submission
of the STAR Listing application.

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Short-Term and Long-Term Loan Proceeds and Facilities. During the year ended December 31, 2020, we received net proceeds of $12.4 million by increasing net short term
borrowing to $26.1 million as compared to $13.8 million in 2019, and we received proceeds of $19.6 million by increasing our long-term borrowing to $19.6 million as
compared to $0 million in 2019. ACM Shanghai and ACM Korea are party to short-term lines of credit with five banks, and Shengwei Research (Shanghai), Inc., is party to a
long-term loan facility with one bank as follows:

Lender

 Agreement Date

 Maturity Date

Bank of Shanghai Pudong Branch

Bank of Communications

China Everbright Bank

April 2020

April 2020

April 2020

China Merchants Bank

August 2020

May 2021 -
June 2021

April 2021 -
May 2021

April 2021 -
June 2021

August 2021

China Merchants Bank

November 2020

Repayable by installments and the
last installments repayble in
November 2030

Industrial Bank of Korea

July 2020

July 2021

Annual
Interest Rate  

Maximum
Borrowing
Amount(1)

Amount
Outstanding
at December
31, 2020

(in thousands)

3.48%-4.68% 

RMB70,000

RMB63,642

  $

10,731    $

9,756 

3.65%-4.65% 

RMB20,000

RMB20,000

  $

3,066    $

3,066 

2.7%-4.7% 

RMB80,000

RMB57,922

  $

12,264    $

3.85% 

RMB80,000   

  $

12,264    $

8,879 
RMB29,000 
4,446 

RMB128,500

RMB127,657

4.65% 

  $

19,699    $

3.99% 

KRW500,000   

  $
  $

428     
58,452    $

19,570 
NIL 
- 
45,717 

(1)

Converted  from  RMB  to  dollars  as  of  December  31,  2020.  All  of  the  amounts  owing  under  the  line  of  credit  with  China  Everbright  Bank  and  Bank  of  China
Pudong Branch are guaranteed by Dr. David Wang, our Chief Executive Officer, President and Chair of the Board. All of the amounts owing under the line of
credit with Bank of Shanghai Pudong Branch are guaranteed by Dr. Wang and CleanChip Technologies LTD, a wholly owned subsidiary of ACM Shanghai. All of
the amounts owing under the line of credit with Industrial Bank of Korea are guaranteed by YY Kim, Chief Executive Officer of ACM Research (Korea).

Government Research and Development Grants. As described under “—Key Components of Results of Operations—PRC Government Research and Development Funding,”
ACM Shanghai has received research and development grants from local and central PRC governmental authorities. ACM Shanghai received cash payments of $6.2 million
related to such grants in 2020, as compared to received cash payments of $3.4 million related to such grants in 2019. Not all grant amounts are received in the year in which a
grant is awarded. Because of the nature and terms of the grants, the amounts and timing of payments under the grants are difficult to predict and vary from period to period. In
addition, we expect to apply for additional grants when available in the future, but the grant application process can extend for a significant period of time and we cannot
predict whether, or when, we will determine to apply for any such grants.

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Working Capital. The following table sets forth selected working capital information:

Cash and cash equivalents
Accounts receivable, less allowance for doubtful amounts
Inventory
Working capital

  December 31, 2020 
  (in thousands)
  $

71,766 
56,441 
88,639 
216,846 

  $

Our cash and cash equivalents at December 31, 2020 were unrestricted and held for working capital purposes. ACM Shanghai, our only direct PRC subsidiary, is, however,
subject to PRC restrictions on distributions to equity holders. We currently intend for ACM Shanghai to retain all available funds any future earnings for use in the operation
of its business and do not anticipate its paying any cash dividends. We have not entered into, and do not expect to enter into, investments for trading or speculative purposes.
Our  accounts  receivable  balance  fluctuates  from  period  to  period,  which  affects  our  cash  flow  from  operating  activities.  Fluctuations  vary  depending  on  cash  collections,
client mix, and the timing of shipment and acceptance of our tools.

We have never declared or paid cash dividends on our capital stock. We intend to retain all available funds and any future earnings to support the operation of and to finance
the growth and development of our business and do not anticipate paying any cash dividends in the foreseeable future.

Uses of Funds

Cash Flow used in Operating Activities. Our operations used cash flow of $13.5 million during the year ended December 31, 2020. Our cash flow from operating activities is
influenced by (a) the level of net income, (b) the amount of cash we invest in personnel and technology development to support anticipated future growth in our business, (c)
the number of first tools or ‘demo’ tools delivered to customers for evaluation, (d) increases in the number of customers using our products, and (e) the amount and timing of
payments by customers.

Capital Expenditures. We incurred $5.9 million in capital expenditures during the year ended 2020, versus $1.1 in million capital expenditures in 2019.

Lingang-Related Investments.  ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc., purchased a land use right for $9.7 million in the
year  ended  2020,  as  described  in  note  7  to  the  consolidated  financial  statements.  ACM  Shanghai  pre-paid  $40.2  million  during  the  year-ended  December  31,  2020  for  a
deposit towards a purchase of housing properties which was recorded in other long term assets in the consolidated balance sheets as described in note 8.

Trading Securities. ACM Shanghai made an indirect investment of $15.0 million in shares of Semiconductor Manufacturing International Corporation on  the STAR Market
through ACM Shanghai’s investment in Qingdao Limited Partnership Fund, during the year ended December 31, 2020, as is described in note 15 to the consolidated financial
statements included in this report.

Off-Balance Sheet Arrangements

As of December 31, 2020 and 2019, we did not have any significant off-balance sheet arrangements, as defined in Item 303(a)(4)(ii) of Regulation S-K of the Securities and
Exchange Commission.

Item 7A.

Quantitative and Qualitative Disclosures About Market Risk

As a result of our operating, investing and financing activities, we are exposed to market risks such as interest rate risk and foreign currency exchange rate risk. We are also
exposed to credit risk as a result of our normal business activities.

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Foreign Currency Exchange Risk

Our consolidated financial statements are presented in U.S. dollars, which is our reporting currency, while the functional currency of our subsidiaries in the PRC is RMB, and
the functional currency of our subsidiary in South Korea is the South Korean Won, or the SKR. Transactions in foreign currencies are initially recorded at the functional
currency rate prevailing at the date of the transactions. Any difference between the initially recorded amount and the settlement amount is recorded as a gain or loss on foreign
currency transaction in our consolidated statements of operations. Monetary assets and liabilities denominated in a foreign currency are translated at the functional currency
rate of exchange as of the date of a consolidated balance sheet. Any difference is recorded as a gain or loss on foreign currency translation in the appropriate consolidated
statement of operations. In accordance with ASC Topic 830, Foreign Currency Matters, we translate the assets and liabilities into U.S. dollars from RMB using the rate of
exchange prevailing at the applicable balance sheet date and the consolidated statements of operations and cash flows are translated at an average rate during the reporting
period. Adjustments resulting from the translation are recorded in stockholders’ equity as part of accumulated other comprehensive income.

The  majority  of  our  business  is  conducted  through  our  ACM  Shanghai  subsidiary  that  manufactures  and  sells  our  products  in  various  global  markets,  and  we  also  have
operations  in  South  Korea,  the  Taiwan  Region,  the  United  States,  and  other  countries.  We  sell  the  majority  of  our  products  in  transactions  denominated  in  U.S.  dollars;
however, we purchase raw materials, pay wages, and make payments to our supply chain in foreign currencies, primarily RMB, and also the SKR. As a result, our earnings,
cash flows and cash balances are exposed to fluctuations in foreign currency exchange rates.  For example, because of our significant manufacturing operations in the PRC, a
weakening  RMB  is  advantageous  and  a  strengthening  RMB  is  disadvantageous  to  our  financial  results.  At  this  time,  we  have  not  established  a  formal  hedging  policy  to
attempt to reduce the inherent risks of potential currency fluctuations on our global operations.  We report the impact of foreign exchange fluctuations in the other income
(expense) line item of our Consolidated Statements of Operations and Comprehensive Income statements.  For 2020, 2019, and 2018, the effect of fluctuations of foreign
currencies contributed realized gains (losses) of ($4.4 million), $1.0 million and $1.1 million respectively.

The PRC government imposes significant exchange restrictions on fund transfers out of the PRC that are not related to business operations. To date these restrictions have not
had a material impact on us because we have not engaged in any significant transactions that are subject to the restrictions.

Interest Rate Risk

As of December 31, 2020 and 2019, the balance of our short term bank borrowings (see note 9 in the Notes to Consolidated Financial Statements included herein under “Item
8. Financial Statements and Supplementary Data.”), matured at various dates within the following year and did not expose the Company to interest rate risk.  As of December
31, 2020, the balance of our long-term borrowings (see note 12 in the Notes to Consolidated Financial Statements included herein under “Item 8. Financial Statements and
Supplementary Data.”) carries a fixed interest rated and we may be exposed to fair value interest rate risk.

We  have  implemented  policies  and  procedures  to  measure,  manage,  monitor  and  report  risk  exposures,  which  are  reviewed  regularly  by  management  and  the  board  of
directors. We identify risk exposures and monitor and manage such risks on an ongoing basis.

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Item 8.

Financial Statements and Supplementary Data

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Consolidated Financial Statements

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets as of December 31, 2020 and 2019

Consolidated Statements of Operations and Comprehensive Income for the Years ended December 31, 2020, 2019 and 2018

Consolidated Statements of Changes in Stockholders’ Equity for the Years ended December 31, 2020, 2019 and 2018

Consolidated Statements of Cash Flows for the Years ended December 31, 2020, 2019 and 2018

Notes to Consolidated Financial Statements

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69

72

73

74

75

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Report of Independent Registered Public Accounting Firm

Shareholders and Board of Directors
ACM Research, Inc.
Fremont, California

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of ACM Research, Inc. and subsidiaries (the “Company”) as of December 31, 2020 and 2019, the related
consolidated statements of operations and comprehensive income, changes in stockholders’ equity, and cash flows for each of the three years in the period ended December
31, 2020, 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, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the
period ended December 31, 2020, 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,  2020,  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 1, 2021 expressed an unqualified 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.

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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.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the consolidated financial statements that were communicated or required
to  be  communicated  to  the  audit  committee  and  that:  (1)  relate  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 matters below, providing separate opinions on the critical audit matters or on the accounts or
disclosures to which they relate.

Revenue recognition on sale of single-wafer wet cleaning equipment

As described in Note 2 and Note 3 to the consolidated financial statements, the Company derives revenue principally from the sale of single-wafer wet cleaning equipment.
Revenue  of  sale  of  single-wafer  wet  cleaning  equipment  is  recognized  when  the  Company  satisfies  performance  obligations  by  transferring  the  control  over  products
promised in the contract with customer, which is the point of time when the equipment has been demonstrated to meet the customer’s predetermined specifications and is
accepted by the customer. For revenue contracts that provide for a lapsing customer acceptance period, the Company recognizes revenue as of the earlier of the expiration of
the lapsing acceptance period or customer acceptance.

We  identified  the  timing  of  revenue  recognition  as  a  critical  audit  matter  because  the  Company’s  revenue  contracts  have  a  variety  of  specifications,  payment  terms  and
customer  acceptance  clauses.  Auditing  these  elements  involved  especially  challenging  auditor  judgment  in  evaluating  the  appropriateness  of  the  Company’s  revenue
recognition.

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

•
•

•

Testing the design and operating effectiveness of controls over revenue recognition including management’s assessment of revenue contract terms.
Evaluating management’s accounting policies and practices including the reasonableness of management’s judgments and assumptions relating to the Company’s
revenue recognition including evaluation of customer acceptance clauses.
Testing a sample of revenue contracts and underlying order documents to evaluate appropriateness of management’s revenue recognition including assessment of
customer acceptance clauses.

Accounting for Financial Liability

As  described  in  Note  16  to  the  consolidated  financial  statements,  in  preparation  for  the  STAR  IPO,  the  Company  entered  into  two  agreements  relating  to  outstanding
obligations and agreed to deliver certain consideration. The Company accounted for this consideration as a financial liability and applied fair value option to measure the
consideration.  On  July  29,  2020  the  Company  entered  into  an  amended  agreement  under  which,  in  settlement  of  the  financial  liability,  the  Company  issued  a  warrant  to
purchase shares of Class A common stock. The financial liability was remeasured to fair value as of July 29, 2020 and was retired with the issuance of the warrant.

We  identified  the  accounting  and  measurement  of  the  financial  liability  as  a  critical  audit  matter.  Auditing  the  Company’s  accounting  assessment  of  the  financial  liability
involved especially challenging and complex auditor judgment due to the nature and extent of specialized skill and knowledge required.

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

•
•
•

Testing the design and operating effectiveness of controls over management’s assessment of accounting and measurement of the financial liability.
Evaluating the reasonableness of management’s assumptions in determining the fair value of the financial liability.
Utilizing  personnel  with  specialized  knowledge  and  skill  in  accounting  to  evaluate  the  appropriateness  of  management’s  application  of  accounting  guidance  for
complex financial instruments.

BDO China Shu Lun Pan Certified Public Accountants LLP

We have served as the Company's auditor since 2015.

Shenzhen, The People’s Republic of China

March 1, 2021

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ACM RESEARCH, INC.
Consolidated Balance Sheets
(In thousands, except per share data)

Assets

Current assets:
Cash and cash equivalents
Restricted cash
Trading securities (note 15)
Accounts receivable, less allowance for doubtful accounts of $0 as of December 31, 2020 and December 31, 2019 (note 4)
Other receivables
Inventories (note 5)
Prepaid expenses

  $

Total current assets

Property, plant and equipment, net (note 6)
Land use right, net (note 7)
Operating lease right-of-use assets, net (note 11)
Intangible assets, net
Deferred tax assets (note 21)
Long-term investments (note 14)
Other long-term assets (note 8)

Total assets

Current liabilities:

Liabilities, Redeemable Non-controlling Interests and Stockholders’ Equity

Short-term borrowings (note 9)
Current portion of long-term borrowings (note 12)
Accounts payable
Advances from customers
Deferred revenue
Income taxes payable (note 21)
FIN-48 payable (note 21)
Other payables and accrued expenses (note 10)
Current portion of operating lease liability (note 11)

Total current liabilities

Long-term borrowings (note 12)
Long-term operating lease liability (note 11)
Deferred tax liability (note 21)
Other long-term liabilities (note 13)

Total liabilities

Commitments and contingencies (note 23)
Redeemable non-controlling interests (note 19)
Stockholders’ equity:
Common stock – Class A, par value $0.0001: 50,000,000 shares authorized as of December 31, 2020 and December 31, 2019;

16,896,693 shares issued and outstanding as of December 31, 2020 and 16,182,151 shares issued and outstanding as of December
31, 2019 (note 18)

Common stock–Class B, par value $0.0001: 2,409,738 shares authorized as of December 31, 2020 and December 31, 2019;

1,802,606 shares issued and outstanding as of December 31, 2020 and 1,862,608 shares issued and outstanding as of December 31,
2019 (note 18)

Additional paid in capital
Accumulated surplus
Accumulated other comprehensive income (loss)
Total ACM Research, Inc. stockholders’ equity
Non-controlling interests
Total stockholders’ equity

Total liabilities, redeemable non-controlling interests, and stockholders’ equity

  $

The accompanying notes are an integral part of these consolidated financial statements.

72

December 31,

2020

2019

71,766    $
-     
28,239     
56,441     
9,679     
88,639     
5,892     
260,656     
8,192     
9,646     
4,297     
554     
11,076     
6,340     
40,496     
341,257     

26,147     
1,591     
35,603     
17,888     
1,343     
31     
83     
18,805     
1,417     
102,908     
17,979     
2,880     
1,286     
8,034     
133,087     

58,261 
59,598 
- 
31,091 
2,603 
44,796 
2,047 
198,396 
3,619 
- 
3,887 
344 
5,331 
5,934 
192 
217,703 

13,753 
- 
13,262 
9,129 
- 
3,129 
- 
12,874 
1,355 
53,502 
- 
2,532 
- 
4,186 
60,220 

-     

60,162 

2     

2 

-     
102,004     
34,287     
4,857     
141,150     
67,020     
208,170     
341,257    $

- 
83,487 
15,507 
(1,675)
97,321 
- 
97,321 
217,703 

 
 
 
 
   
 
 
 
     
 
 
 
     
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
      
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
     
 
 
 
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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ACM RESEARCH, INC.
Consolidated Statements of Operations and Comprehensive Income

(In thousands, except per share data)

Revenue (note 3)
Cost of revenue

Gross profit
Operating expenses:

Sales and marketing
Research and development
General and administrative

Total operating expenses, net
Income from operations

Interest income
Interest expense
Change in fair value of financial liability (note 16)
Unrealized gain on trading securities
Other income (expense), net
Equity income in net income of affiliates
Income before income taxes
Income tax benefit (expense) (note 21)

Net income

Less: Net income attributable to non-controlling interests and redeemable non-controlling interests

Net income attributable to ACM Research, Inc.

  $

Comprehensive income:

Net income
Foreign currency translation adjustment

Comprehensive Income

Less: Comprehensive income attributable to non-controlling interests and redeemable non-controlling interests  

Comprehensive income attributable to ACM Research, Inc.

Net income attributable to ACM Research, Inc. per common share (note 2):

Basic

Diluted

  $

  $

  $

Weighted average common shares outstanding used in computing per share amounts (note 2):

Basic

Diluted

The accompanying notes are an integral part of these consolidated financial statements.

73

Year Ended December 31,
2019

2018

2020

  $

  $

156,624 
87,025 
69,599 

107,524    $
56,870     
50,654     

16,773 
19,119 
12,215 
48,107 
21,492 
897 
(982)  
(11,964)  
12,574 
(3,377)  
655 
19,295 
2,382 
21,677 
2,897 
18,780 

  $

21,677 
10,493 
32,170 
6,858 
25,312 

  $

11,902     
12,900     
8,061     
32,863     
17,791     
333     
(745)    
-     
-     
1,393     
168     
18,940     
518     
19,458     
564     
18,894    $

19,458     
(899)    
18,559     
483     
18,076    $

74,643 
40,194 
34,449 

9,611 
10,380 
7,987 
27,978 
6,471 
29 
(498)
- 
- 
1,255 
123 
7,380 
(806)
6,574 
- 
6,574 

6,574 
(979)
5,595 
- 
5,595 

1.03 

  $

0.89 

  $

1.12    $

0.99    $

0.42 

0.37 

18,233,361 

21,183,469 

16,800,623     

15,788,460 

19,135,497     

17,912,105 

 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
  
 
 
      
  
 
 
 
  
 
 
      
  
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
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ACM RESEARCH, INC.
Consolidated Statement of Changes in Stockholders’ Equity
(In thousands, except per share data)

Common
Stock Class A

Common
Stock Class B

Additional Paid-
in Capital

Accumulated Surplus
(Deficit)

Accumulated
Other
Comprehensive
Income (Loss)    

Non-controlling
interests

Total
Stockholders’
Equity

49,695   $

(9,961) $

122   $

-  $

39,857 

Balance at December 31, 2017  12,935,546   $
Net income attributable to
ACM Research, Inc.

-    

  Shares

    Amount   Shares     Amount  
1    2,409,738   $

-  $

issued to SMC

397,502    
Balance at December 31, 2018   14,110,315   $

-    
-   
1    1,898,423   $

-   

-   
-   
-   

-    

-    
-    
-    

-    
265,952    
-    

511,315    

-    (511,315)  

-    

-    
195,297    

-    

-   

-   
-   

-   

-    

-    
-    

-    

   2,053,572    
(214,286)  

1   

-    

-   

Foreign currency translation

adjustment

Exercise of stock options
Stock-based compensation
Conversion of Class B common

stock to Class A common
stock

Exercise of stock warrants

Net income attributable to
ACM Research, Inc.

Foreign currency translation

adjustment

Exercise of stock options
Cancellation of stock options
Stock-based compensation
Issuance of Class A common
stock in connection with
public offering
Share repurchase
Conversion of Class B common

stock to Class A common
stock

Exercise of stock warrants

35,815    

-   

(35,815)  

issued to HFG

1,438    
Balance at December 31, 2019  16,182,151   $

-   
-    
2    1,862,608   $

Net income
Foreign currency translation

adjustment

Exercise of stock options
Stock-based compensation
Conversion of class B common
shares to Class A common
shares

Share cancellation (note 16)
Issuance of warrants (note 16)
Exercise of stock warrants
Reclassification of redeemable

-    

-    
832,504    
-    

60,002    
(242,681)  
-    
64,717    

-   

-   
-   
-   

-   
-   
-   
-   

-    

-    
-    
-    

(60,002)  
-    
-    
-    

non-controlling interest

-    
Balance at December 31, 2020  16,896,693    

-   
-    
2    1,802,606    

-   

-   
-   
-   

-   

-   
-  $

-   

-   
-   

-   

-   

-   
-  $

-   

-   
-   
-   

-   
-   
-   
-   

-   
-   

The accompanying notes are an integral part of these consolidated financial statements.

74

-    
317    
(576)  
3,572    

26,434    
(2,827)  

-    

-    
83,487   $

-    

-    
2,745    
5,628    

-    
(9,715)  
19,859    
-    

-    
102,004    

-    

-    
528    
3,363    

-    

2,981    
56,567   $

6,574    

-    
-    
-    

-    

-    
(3,387) $

-    

18,894    

-    

(979)  
-    
-    

-    

-    
(857) $

-    

(818)  
-    

-    

-    

-    

-    
(1,675) $

-   

-   
-   
-   

-   

-   
-  $

-   

-   
-   
-   
-   

-   
-   

-   

-   
-  $

-    

2,254   

6,532    
-    
-    

4,808   
-   
-   

-    
-    
-    
-    

-   
-   
-   
-   

6,574 

(979)
528 
3,363 

- 

2,981 
52,324 

18,894 

(818)
317 
(576)
3,572 

26,435 
(2,827)

- 

- 
97,321 

21,034 

11,340 
2,745 
5,628 

- 
(9,715)
19,859 
- 

-    
-    

-    

-    

-    

-    
15,507   $

18,780    

-    
-    
-    

-    
-    
-    

-    
34,287    

-    
4,857    

59,958   
67,020   

59,958 
208,170 

 
  
  
 
   
 
   
 
   
 
  
 
 
 
   
   
  
 
  
  
  
  
  
  
  
  
  
  
     
    
     
    
     
     
  
  
    
     
    
     
     
  
  
  
  
  
  
  
  
  
  
     
  
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ACM RESEARCH, INC.
Consolidated Statements of Cash Flows
(In thousands)

Year Ended December 31,
2019

2018

2020

Cash flows from operating activities:
Net income
Adjustments to reconcile net income from operations to net cash used in operating activities

  $

21,677 

  $

19,458    $

Depreciation and amortization
Loss on disposals of property, plant and equipment
Equity income in net income of affiliates
Unrealized gain on trading securities
Deferred income taxes
Stock-based compensation
Change in fair value of financial liability
Net changes in operating assets and liabilities:

Accounts receivable
Other receivables
Inventory
Prepaid expenses
Other long-term assets
Accounts payable
Advances from customers
Income tax payable
FIN-48 payable
Other payables and accrued expenses
Deferred revenue
Other long-term liabilities

Net cash flow (used in) provided by operating activities

Cash flows from investing activities:
Purchase of property and equipment
Purchase of intangible assets
Purchase of land-use-right
Purchase of trading securities
Prepayment for property
Investments in unconsolidated affiliates
Dividends from unconsolidated affiliates

Net cash used in investing activities

Cash flows from financing activities:
Proceeds from short-term borrowings
Repayments of short-term borrowings
Proceeds from long-term borrowings
Repayments of long-term borrowings
Repayments of notes payable
Proceeds from stock option exercise to common stock
Proceeds from issuance of Class A common stock in connection with public offering, net of direct issuance

expenses of $2,287

Payment for repurchase of Class A common stock
Payment for cancellation of stock option
Proceeds from issuance of common stock to redeemable Non-controlling interest

Net cash provided by financing activities

Effect of exchange rate changes on cash, cash equivalents and restricted cash

Net increase (decrease) in cash, cash equivalents and restricted cash

Cash, cash equivalents and restricted cash at beginning of period
Cash, cash equivalents and restricted cash at end of period

Supplemental disclosure of cash flow information:

Interest paid

Cash paid for income taxes

Reconciliation of cash, cash equivalents and restricted cash in condensed consolidated statements of cash

flows:

Cash and cash equivalents
Restricted cash
Cash, cash equivalents and restricted cash

Non-cash financing activities:
Warrant conversion to common stock

Share cancellation, (note 16)

Issuance of warrant for settlement of financial liability, (note 16)

  $

  $

  $

  $

  $

  $

  $

  $

  $

1,055 
25 
(655)  
(12,574)  
(4,085)  
5,628 
11,964 

(22,085)  
(6,882)  
(40,768)  
(3,518)  
(99)  

21,275 
8,578 
(3,137)  
(83)  

5,236 
1,343 
3,558 
(13,547)  

(5,211)  
(324)  
(9,744)  
(15,020)  
(40,206)  

- 
555 
(69,950)  

32,573 
(20,234)  
19,699 

(129)  
(1,820)  
2,745 

- 
- 
- 
- 
32,834 

788     
294     
(168)    
-     
(3,719)    
3,572     
-     

(6,961)    
891     
(6,658)    
(83)    
(151)    
(3,058)    
705     
1,952     
-     
2,865     
-     
(324)    
9,403     

(971)    
(154)    
-     
-     
-     
(4,406)    
-     
(5,531)    

18,423     
(14,005)    
-     
-     
-     
317     

26,434     
(2,827)    
(576)    
59,679     
87,445     

4,570 

  $

(46,093)   $

(582)   $

90,735    $

6,574 

417 
- 
(123)
- 
(405)
3,363 
- 

883 
(1,171)
(24,083)
(1,494)
44 
9,825 
8,316 
1,149 
- 
4,954 
- 
(1,340)
6,909 

(1,830)
(241)
- 
- 
- 
- 
- 
(2,071)

17,726 
(13,131)
- 
- 
- 
528 

- 
- 
- 
- 
5,123 

(518)

9,443 

117,859 
71,766 

  $

27,124     
117,859    $

17,681 
27,124 

982 

  $

4,971 

  $

745    $

1,156    $

498 

- 

71,766 
- 
71,766 

  $

399 

  $

9,715 

  $

19,859 

  $

58,261     
59,598     
117,859    $

9    $

-    $

-    $

27,124 
- 
27,124 

3,079 

- 

- 

The accompanying notes are an integral part of these consolidated financial statements.

75

 
 
 
 
 
 
   
 
 
 
 
 
 
     
 
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
 
 
 
  
 
 
      
  
 
 
 
 
 
 
 
  
 
 
      
  
 
 
  
 
 
      
  
 
 
 
  
 
 
      
  
 
 
  
 
 
      
  
 
 
 
 
 
 
 
 
 
 
  
 
 
      
  
Table of Contents

NOTE 1 – DESCRIPTION OF BUSINESS

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

ACM  Research,  Inc.  (“ACM”)  and  its  subsidiaries  (collectively  with  ACM,  the  “Company”)  develop,  manufacture  and  sell  single-wafer  wet  cleaning  equipment  used  to
improve the manufacturing process and yield for advanced integrated chips. The Company markets and sells its single-wafer wet-cleaning equipment, under the brand name
“Ultra C,” based on the Company’s proprietary Space Alternated Phase Shift (“SAPS”) and Timely Energized Bubble Oscillation (“TEBO”) technologies. These tools are
designed to remove random defects from a wafer surface efficiently, without damaging the wafer or its features, even at increasingly advanced process nodes.

ACM was incorporated in California in 1998, and it initially focused on developing tools for manufacturing process steps involving the integration of ultra low-K materials
and copper. The Company’s early efforts focused on stress-free copper-polishing technology, and it sold tools based on that technology in the early 2000s.

In  2006  the  Company  established  its  operational  center  in  Shanghai  in  the  People’s  Republic  of  China  (the  “PRC”),  where  it  operates  through  ACM’s  subsidiary  ACM
Research (Shanghai), Inc. (“ACM Shanghai”). ACM Shanghai was formed to help establish and build relationships with integrated circuit manufacturers in the PRC, and the
Company initially financed its Shanghai operations in part through sales of non-controlling equity interests in ACM Shanghai.

In 2007 the Company began to focus its development efforts on single-wafer wet-cleaning solutions for the front-end chip fabrication process. The Company introduced its
SAPS megasonic technology, which can be applied in wet wafer cleaning at numerous steps during the chip fabrication process, in 2009. It introduced its TEBO technology,
which  can  be  applied  at  numerous  steps  during  the  fabrication  of  small  node  two-dimensional  conventional  and  three-dimensional  patterned  wafers,  in  March  2016.  The
Company has designed its equipment models for SAPS and TEBO solutions using a modular configuration that enables it to create a wet-cleaning tool meeting the specific
requirements of a customer, while using pre-existing designs for chamber, electrical, chemical delivery and other modules. In August 2018, the Company introduced its Ultra-
C Tahoe wafer cleaning tool, which can deliver high cleaning performance with significantly less sulfuric acid than typically consumed by conventional high-temperature
single-wafer cleaning tools. Based on its electro-chemical plating (“ECP”) technology, the Company introduced in March 2019 its Ultra ECP AP, or “Advanced Packaging,”
tool  for  bumping,  or  applying  copper,  tin  and  nickel  to  semiconductor  wafers  at  the  die-level,  and  its  Ultra  ECP  MAP,  or  “Multi-Anode  Partial  Plating,”  tool  to  deliver
advanced  electrochemical  copper  plating  for  copper  interconnect  applications  in  front-end  wafer  fabrication  processes.  The  Company  also  offers  a  range  of  custom-made
equipment, including cleaners, coaters and developers, to back-end wafer assembly and packaging factories, principally in the PRC.

In 2011 ACM Shanghai formed a wholly owned subsidiary in the PRC, ACM Research (Wuxi), Inc. (“ACM Wuxi”), to manage sales and service operations.

In November 2016 ACM redomesticated from California to Delaware pursuant to a merger in which ACM Research, Inc., a California corporation, was merged into a newly
formed, wholly owned Delaware subsidiary, also named ACM Research, Inc.

In June 2017 ACM formed a wholly owned subsidiary in Hong Kong, CleanChip Technologies Limited (“CleanChip”), to act on the Company’s behalf in Asian markets
outside  the  PRC  by,  for  example,  serving  as  a  trading  partner  between  ACM  Shanghai  and  its  customers,  procuring  raw  materials  and  components,  performing  sales  and
marketing activities, and making strategic investments.

In August 2017 ACM purchased 18.77% of ACM Shanghai’s equity interests held by Shanghai Science and Technology Venture Capital Co., Ltd. On November 8, 2017,
ACM purchased the remaining 18.36% of ACM Shanghai’s equity interest held by third parties, Shanghai Pudong High-Tech Investment Co., Ltd. (“PDHTI”) and Shanghai
Zhangjiang Science & Technology Venture Capital Co., Ltd. (“ZSTVC”). At December 31, 2017, ACM owned all of the outstanding equity interests of ACM Shanghai, and
indirectly through ACM Shanghai, owned all of the outstanding equity interests of ACM Wuxi.

76

Table of Contents

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

On  September  13,  2017,  ACM  effectuated  a  1-for-3  reverse  stock  split  of  Class  A  and  Class  B  common  stock.  Unless  otherwise  indicated,  all  share  numbers,  per  share
amount, share prices, exercise prices and conversion rates set forth in these notes and the accompanying consolidated financial statements have been adjusted retrospectively
to reflect the reverse stock split.

On November 2, 2017, the Registration Statement on Form S-1 (File No. 333- 220451) for ACM’s initial public offering of Class A common stock (the “IPO”) was declared
effective by the U.S. Securities and Exchange Commission. Shares of Class A common stock began trading on the Nasdaq Global Market on November 3, 2017, and the
closing for the IPO was held on November 7, 2017.

In  December  2017  ACM  formed  a  wholly  owned  subsidiary  in  the  Republic  of  Korea,  ACM  Research  Korea  CO.,  LTD.  (“ACM  Korea”),  to  serve  customers  based  in
Republic of Korea and perform sales, marketing, research and development activities for new products and solutions.

In March 2019 ACM Shanghai formed a wholly owned subsidiary in the PRC, Shengwei Research (Shanghai), Inc., to manage activities related to addition of future long-
term production capacity.

In June 2019 Cleanchip formed a wholly owned subsidiary in California, ACM Research (CA), Inc. (“ACM California”), to provide procurement services on behalf of ACM
Shanghai.

In June 2019 ACM announced plans to complete over the next three years a listing (the “STAR Listing”) of shares of ACM Shanghai on the Shanghai Stock Exchange’s new
Sci-Tech innovAtion boaRd, known as the STAR Market, and a concurrent initial public offering (the “STAR IPO”) of ACM Shanghai shares in the PRC. ACM Shanghai is
currently ACM’s primary operating subsidiary, and at the time of announcement, was wholly owned by ACM. To meet a STAR Listing requirement that it have multiple
independent stockholders in the PRC, ACM Shanghai completed private placements of its shares in June and November 2019, following which, as of September 30, 2020, the
private placement investors held a total of 8.3% of the outstanding shares of ACM Shanghai and ACM Research held the remaining 91.7%. As part of the STAR Listing
process,  in  June  2020  the  ownership  interests  held  by  the  private  investors  were  reclassified  from  redeemable  non-controlling  interests  to  non-controlling  interests  as  the
redemption feature was terminated (note 19).

In preparation for the STAR IPO, ACM completed a reorganization in December 2019 that included the sale of all of the shares of Cleanchip by ACM to ACM Shanghai for
$3,500. The reorganization and sale had no impact on ACM’s consolidated financial statements.

The Company has direct or indirect interests in the following subsidiaries:

Name of subsidiaries
ACM Research (Shanghai), Inc.
ACM Research (Wuxi), Inc.
CleanChip Technologies Limited
ACM Research Korea CO., LTD.
Shengwei Research (Shanghai), Inc.
ACM Research (CA), Inc.
ACM Research (Cayman), Inc.

Place and date of
incorporation
China, May 2005
China, July 2011
Hong Kong, June 2017
Korea, December 2017
China, March 2019
USA, June 2019
Cayman Islands, April 2019

77

Effective interest held as at
December 31,

2020

2019

91.7%
91.7%
91.7%
91.7%
91.7%
91.7%
100.0%

91.7%
91.7%
91.7%
91.7%
91.7%
91.7%
100.0%

Table of Contents

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 2 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation and Principles of Consolidation

The Company’s consolidated financial statements include the accounts of ACM and its subsidiaries, including ACM Shanghai and its subsidiaries, which include ACM Wuxi,
ACM  Shengwei  and  CleanChip  (the  subsidiaries  of  which  include  ACM  California  and  ACM  Korea).  ACM’s  subsidiaries  are  those  entities  in  which  ACM,  directly  and
indirectly, controls more than one half of the voting power. All significant intercompany transactions and balances have been eliminated upon consolidation.

COVID-19 Assessment

The outbreak of COVID-19, the coronavirus, has grown both in the United States and globally, and related government and private sector responsive actions have adversely
affected  the  Company’s  business  operations.  In  December  2019  a  series  of  emergency  quarantine  measures  taken  by  the  PRC  government  disrupted  domestic  business
activities during the weeks after the initial outbreak of COVID-19. Since that time, an increasing number of countries, including the United States, have imposed restrictions
on travel to and from the PRC and elsewhere, as well as general movement restrictions, business closures and other measures imposed to slow the spread of COVID-19. The
situation continues to develop, however, and it is impossible to predict the effect and ultimate impact of the COVID-19 outbreak on the Company’s business operations and
results. While the quarantine, social distancing and other regulatory measures instituted or recommended in response to COVID-19 are expected to be temporary, the duration
of the business disruptions, and related financial impact, cannot be estimated at this time. The COVID-19 outbreak has been declared a worldwide health pandemic that could
adversely affect the economies and financial markets of many countries, resulting in an economic downturn and changes in global economic policy that could reduce demand
for  the  Company’s  products  and  its  customers’  chips  and  have  a  material  adverse  impact  on  the  Company’s  business,  operating  results  and  financial  condition.  Through
December 31, 2020 the Company did not experience significant negative impact of COVID-19 on its operations, capital and financial resources, including overall liquidity
position.

The Company conducts substantially all of its product development, manufacturing, support and services in the PRC, and those activities have been directly impacted by the
COVID-19 outbreak and related restrictions on transportation and public appearances. In February 2020 ACM Shanghai’s headquarters were closed for an additional six days
beyond the normal Lunar New Year Holiday in accordance with Shanghai government restrictions related to the outbreak. The Company cannot assure that further closures or
reductions of its PRC operations or production may not be necessary in upcoming months as the result of business interruptions arising from protective measures being taken
by the PRC and other governmental agencies or of other consequences of the COVID-19 outbreak.

The Company’s corporate headquarters are located in San Mateo County in the San Francisco Bay Area. In order to attempt to mitigate the COVID-19 pandemic, in March
2020 (a) the State of California declared a state of emergency related to the spread of COVID-19, (b) the San Francisco Department of Public Health announced aggressive
recommendations to reduce the spread of the disease, (c) the health officers of six San Francisco Bay Area counties, including San Mateo County, issued shelter-in-place
orders, which (i) direct all individuals living in those counties to shelter at their places of residence (subject to limited exceptions), (ii) direct all businesses and governmental
agencies  to  cease  non-essential  operations  at  physical  locations  in  those  counties,  (iii)  prohibit  all  non-essential  gatherings  of  any  number  of  individuals,  and  (iv)  order
cessation of all non-essential travel, and (d) the Governor of California and the State Public Health Officer and Director of the California Department of Public Health ordered
all individuals living in the State of California to stay at their place of residence for an indefinite period of time (subject to limited exceptions). The effects of these types of
actions in the future may negatively impact productivity, disrupt the business of the Company and delay timelines, the magnitude of which will depend, in part, on the length
and severity of the restrictions and other limitations on the Company’s ability to conduct its business in the ordinary course.

The prolonged and broad-based shift to a remote working environment continues to create inherent productivity, connectivity, and oversight challenges and could affect our
ability  to  enhance,  develop  and  support  existing  products  and  services,  detect  and  prevent  spam  and  problematic  content,  hold  product  sales  and  marketing  events,  and
generate  new  sales  leads,  among  others.  In  addition,  the  changed  environment  under  which  the  Company  is  operating  could  have  an  effect  on  its  internal  controls  over
financial reporting as well as our ability to meet a number of its compliance requirements in a timely or quality manner. Additional and/or extended, governmental lockdowns,
restrictions  or  new  regulations  could  significantly  impact  the  ability  of  our  employees  and  vendors  to  work  productively.  Governmental  restrictions  have  been  globally
inconsistent and it remains unclear when a return to worksite locations or travel will be permitted or what restrictions will be in place in those environments. As the Company
prepares to return its workforce in more locations back to the office in 2021, it may experience increased costs as it prepares its facilities for a safe return to work environment
and experiment with hybrid work models, in addition to potential effects on its ability to compete effectively and maintain its corporate culture.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

Extended periods  of  interruption  to  our  corporate,  development  or  manufacturing  facilities  due  to  the  COVID-19  outbreak  could  cause  the  Company  to  lose  revenue  and
market share, which would depress its financial performance and could be difficult to recapture. The Company’s business may also be harmed if travel to or from the PRC or
the United States continues to be restricted or inadvisable or if members of management and other employees are absent because they contract the coronavirus, they elect not
to  come  to  work  due  to  the  illness  affecting  others  in  the  Company’s  office  or  laboratory  facilities,  or  they  are  subject  to  quarantines  or  other  governmentally  imposed
restrictions.

Use of Estimates

The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts
of assets and liabilities and disclosure of contingent assets and liabilities at the balance sheet date and the reported revenues and expenses during the reported period in the
consolidated financial statements and accompanying notes. The Company’s significant accounting estimates and assumptions include, but are not limited to, those used for the
valuation and recognition of fair value of trading securities, stock-based compensation arrangements and warrant liability, realization of deferred tax assets, assessment for
impairment of long-lived assets, allowance for doubtful accounts, inventory valuation for excess and obsolete inventories, lower of cost and market value or net realizable
value of inventories, depreciable lives of property and equipment and useful life of intangible assets.

Management evaluates these estimates and assumptions on a regular basis. Actual results could differ from those estimates and assumptions.

Reclassifications

Certain prior year amounts in the notes to the Consolidated Financial Statements, have been reclassified to conform with the current year presentation. These classifications
within the statements had no impact on the Company’s results of operations.

Cash and Cash Equivalents

Cash and cash equivalents consist of cash on hand, bank deposits that are unrestricted as to withdrawal and use, and highly liquid investments with an original maturity date
of three months or less at the date of purchase. At times, cash deposits may exceed government-insured limits.

Restricted cash

Restricted cash represents deposits not readily available to ACM. Restricted cash as of December 31, 2019 represented cash hold in reserve, all of the proceeds received from
issuance of common stock to redeemable non-controlling interest in segregated cash and cash-equivalent accounts. There was no restricted cash as of December 31, 2020, as
the redemption feature of these proceeds was terminated during the second quarter of 2020 and the Company released restrictions on the cash as described in note 19.

Accounts Receivable

Accounts receivable are presented net of an allowance for doubtful accounts. The Company reviews its accounts receivable on a periodic basis and makes general and specific
allowances when there is doubt as to the collectability of individual balances. In evaluating the collectability of individual receivable balances, the Company considers many
factors, including the age of the balance, a customer’s historical payment history and credit worthiness, current economic trends and reasonable and supportable forecasts.
Accounts are written off after all collection efforts have been exhausted. At December 31, 2020, and 2019, the Company, based on a review of its outstanding balances and its
customers, determined the allowance for doubtful accounts in the amount of $0 and $0 respectively.

Land use right, net

The land use right represents the cost to purchase a right to use state-owned land in the PRC with lease terms of 50 years expiring in 2070, for which an upfront lump-sum
payment was made during the year ended December 31, 2020. The Company classifies the land use right as non-current assets on the consolidated balance sheets (note 7).

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The  land  use  right  is  carried  at  cost  less  accumulated  amortization  and  impairment  losses,  if  any.  Amortization  is  computed  using  the  straight-line  method  over  the  term
specified in the land use right certificate, which is 50 years.

Inventory

Inventory consists of raw materials and related goods, work-in-progress, finished goods, and other consumable materials such as spare parts. Finished goods typically are
shipped from the Company’s warehouse within one month of completion.

Inventory was recorded at the lower of cost or net realizable value at December 31, 2020 and 2019.

●

●

The  cost  of  a  general  inventory  item  is  determined  using  the  weighted  moving  average  method.  Under  the  weighted  moving  average  method,  the  Company
calculates the new average price of all items of a particular inventory stock each time one or more items of that stock are purchased. The then-current average price
of the stock is used for purposes of determining cost of inventory or cost of revenue. The cost of an inventory item purchased specifically for a customized product
is determined using the specific identification method. Low-cost consumable materials and packaging materials are expensed as incurred.
Net realizable value is the estimated selling price, in the ordinary course of business, less estimated costs to complete or dispose.

The Company assesses the recoverability of all inventories quarterly to determine if any adjustments are required. Potential excess or obsolete inventory is written off based
on management’s analysis of inventory levels and estimates of future 12-month demand and market conditions.

Property, Plant and Equipment, Net

Property, plant and equipment are recorded at cost less accumulated depreciation and any provision for impairment in value. Depreciation begins when the asset is placed in
service and is calculated by using the straight-line method over the estimated useful life of an asset (or, if shorter, over the lease term). Betterments or renewals are capitalized
when incurred. Plant, property and equipment is reviewed each year to determine whether any events or circumstances indicate that the carrying amount of the assets may not
be recoverable.

Estimated useful lives of assets in the United States are as follows:

Computer and office equipment
Furniture and fixtures
Leasehold improvements

3 to 5 years
5 years
shorter of lease term or estimated useful life

ACM’s subsidiaries follow regulations for depreciation of fixed assets implemented under the PRC’s Enterprise Income Tax Law, which state that the minimum useful lives
used for calculating depreciation for fixed assets are as follows:

Manufacturing equipment

Furniture and fixtures
Transportation equipment
Electronic equipment
Leasehold improvements

for small to medium-sized equipment, 5 years; for large equipment,
estimated by purchasing department at time of acceptance
5 years
4 to 5 years
3 to 5 years
remaining lease term for improvements on leased fixed assets or,
for large improvements, estimated useful life;
not less than 3 years for non-fixed asset repairs

Expenditures for maintenance and repairs that neither materially add to the value of the property nor appreciably prolong the life of the property are charged to expense as
incurred. Upon retirement or sale of an asset, the cost of the asset and the related accumulated depreciation are eliminated from the accounts and any resulting gain or loss is
credited or charged to income.

Intangible Assets, Net

Intangible assets consist of software used for finance, manufacturing, and research and development purposes. Assets are valued at cost at the time of acquisition and are
amortized over their beneficial periods. If a contract specifies a beneficial period, then the intangible asset is amortized over a term not exceeding the beneficial period. If the
contract does not specify a beneficial period, then the intangible asset is amortized over a term not exceeding the valid period specified by local law. If neither the contract nor
local law specifies a beneficial period, then the intangible asset is amortized over a period of up to 10 years. Currently, the software that the Company uses is amortized for
between two and ten-years, based on its functionality and useful life in accordance with the policy described above.

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Investments

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The Company uses the equity method of accounting for its investment in, and earning or loss of, companies that it does not control but over which it does exert significant
influence.  The  Company  considers  whether  the  fair  value  of  its  equity  method  investment  has  declined  below  its  carrying  value  whenever  adverse  events  or  changes  in
circumstances indicate that recorded value may not be recoverable. The Company reviews its investments for other-than-temporary impairment whenever events or changes
in business circumstances indicate that the carrying value of the investment may not be fully recoverable. Investments identified as having an indication of impairment are
subject to further analysis to determine if the impairment is other-than-temporary and this analysis requires estimating the fair value of the investment. The determination of
fair value of the investment involves considering factors such as current economic and market conditions, the operating performance of the entities including current earnings
trends and forecasted cash flows, and other company and industry specific information. If the Company considers any decline to be other than temporary (based on various
factors, including historical financial results and the overall health of the investee), then a write-down would be recorded to estimated fair value. See note 10 for discussion of
equity method investment.

All marketable securities are classified as trading securities and trading securities and are stated at fair market value, less a discount applied to reflect the remaining lock-up
period  when  the  securities  are  subject  to  lock-up  period.  Fair  market  value  is  determined  by  the  most  recently  traded  price  of  the  security  at  the  balance  sheet  date.  Net
realized and unrealized gains and losses on trading securities are included in the consolidated statement of operations. The cost of investments sold is based on the average
cost method. Interest and dividend income earned are included in other income (expense), net.

Valuation of Long-Lived Assets

Long-lived assets are evaluated for impairment whenever events or changes in circumstance indicate that the carrying value of the assets may not be fully recoverable or that
the useful life of the assets is shorter than the Company had originally estimated. When these events or changes occur, the Company evaluates the impairment of the long-
lived  assets  by  comparing  the  carrying  value  of  the  assets  to  an  estimate  of  future  undiscounted  cash  flows  expected  to  be  generated  from  the  use  of  the  assets  and  their
eventual disposition. If the sum of the expected future undiscounted cash flow is less than the carrying value of the assets, the Company recognizes an impairment loss based
on the excess of the carrying value over the fair value. No impairment charge was recognized for either of the periods presented.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use (“ROU”) assets, other current liabilities and
operating lease liabilities in the consolidated balance sheets.

ROU  assets  represent  the  Company’s  right  to  use  an  underlying  asset  for  the  lease  term,  and  lease  liabilities  represent  the  Company’s  obligation  to  make  lease  payments
arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As
most of the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in
determining the present value of lease payments. It uses the implicit rate when readily determinable. The operating lease ROU asset also includes any lease payments made
and excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise
that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Redeemable Non-controlling Interests

The  Company  recorded  initial  carrying  amount  of  redeemable  non-controlling  interests  at  fair  value  on  the  date  of  issuance,  and  presented  in  temporary  equity  on  the
consolidated balance sheets.

As the non-controlling interests would be redeemable at a fixed purchase price, it is classified as common-share non-controlling interests redeemable at other than fair value.
The  Company  applied  the  entire  adjustment  method  (income  classification)  for  subsequent  measurement  in  accordance  with  Financial  Accounting  Standards  Board  (the
“FASB”) Accounting Standards Classification (“ASC”) ASC 480-10-S99.

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Revenue Recognition

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The Company derives revenue principally from the sale of single-wafer wet cleaning equipment. Revenue from contracts with customers is recognized using the following
five steps pursuant ASC Topic 606, Revenue from Contracts with Customers:

Identify the contract(s) with a customer;
Identify the performance obligations in the contract;

1.
2.
3. Determine the transaction price;
4. Allocate the transaction price to the performance obligations in the contract; and
5. Recognize revenue when (or as) the entity satisfies a performance obligation.

A contract contains a promise (or promises) to transfer goods or services to a customer. A performance obligation is a promise (or a group of promises) that is distinct. The
transaction price is the amount of consideration a company expects to be entitled from a customer in exchange for providing the goods or services.

The  unit  of  account  for  revenue  recognition  is  a  performance  obligation  (a  good  or  service).  A  contract  may  contain  one  or  more  performance  obligations.  Performance
obligations are accounted for separately if they are distinct. A good or service is distinct if the customer can benefit from the good or service either on its own or together with
other resources that are readily available to the customer, and the good or service is distinct in the context of the contract. Otherwise performance obligations are combined
with other promised goods or services until the Company identifies a bundle of goods or services that is distinct. Promises in contracts which do not result in the transfer of a
good or service are not performance obligations, as well as those promises that are administrative in nature, or are immaterial in the context of the contract. The Company has
addressed whether various goods and services promised to the customer represent distinct performance obligations. The Company applied the guidance of ASC Topic 606-10-
25-16 through 18 in order to verify which promises should be assessed for classification as distinct performance obligations. The Company’s contracts with customers include
more than one performance obligation. For example, the delivery of a piece of equipment generally includes the promise to install the equipment in the customer’s facility.
The  Company’s  performance  obligations  in  connection  with  a  sale  of  equipment  generally  include  production,  delivery  and  installation,  together  with  the  provision  of  a
warranty.

The transaction price is allocated to all the separate performance obligations in an arrangement. It reflects the amount of consideration to which the Company expects to be
entitled  in  exchange  for  transferring  goods  or  services,  which  may  include  an  estimate  of  variable  consideration  to  the  extent  that  it  is  probable  of  not  being  subject  to
significant reversals in the future based on the Company’s experience with similar arrangements. The transaction price excludes amounts collected on behalf of third parties,
such as sales taxes. This is done on a relative selling price basis using standalone selling prices (“SSP”). The SSP represents the price at which the Company would sell that
good  or  service  on  a  standalone  basis  at  the  inception  of  the  contract.  Given  the  requirement  for  establishing  SSP  for  all  performance  obligations,  if  the  SSP  is  directly
observable  through  standalone  sales,  then  such  sales  should  be  considered  in  the  establishment  of  the  SSP  for  the  performance  obligation.  The  Company  does  not  have
observable SSPs for most performance obligations as the obligations are not regularly sold on a standalone basis. Production, delivery and installation of a product, together
with provision of a warranty, are a single unit of accounting.

Revenue is recognized when the Company satisfies each performance obligation by transferring control of the promised goods or services to the customer. Goods or services
can transfer at a point in time (upon the acceptance of the products or upon the arrival at the destination as stipulated in the shipment terms) in a sale arrangement. In general,
the Company recognizes revenue when a tool has been demonstrated to meet the customer’s predetermined specifications and is accepted by the customer. If terms of the sale
provide  for  a  lapsing  customer  acceptance  period,  the  Company  recognizes  revenue  as  of  the  earlier  of  the  expiration  of  the  lapsing  acceptance  period  and  customer
acceptance.  In  the  following  circumstances,  however,  the  Company  recognizes  revenue  upon  shipment  or  delivery,  when  legal  title  to  the  tool  is  passed  to  a  customer  as
follows:

● When the customer has previously accepted the same tool with the same specifications and the Company can objectively demonstrate that the tool meets all of the

required acceptance criteria;

● When the sales contract or purchase order contains no acceptance agreement or lapsing acceptance provision and the Company can objectively demonstrate that

the tool meets all of the required acceptance criteria;

● When the customer withholds acceptance due to issues unrelated to product performance, in which case revenue is recognized when the system is performing as

intended and meets predetermined specifications; or

● When the Company’s sales arrangements do not include a general right of return.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The Company offers post-warranty period services, which consist principally of the installation and replacement of parts and small-scale modifications to the equipment. The
related revenue and costs of revenue are recognized when parts have been delivered and installed, risk of loss has passed to the customer, and collection is probable. The
Company does not expect revenue from extended maintenance service contracts to represent a material portion of its revenue in the future.

The Company incurs costs related to the acquisition of its contracts with customers in the form of sales commissions. Sales commissions are paid to third party representatives
and distributors. Contractual agreements with these parties outline commission structures and rates to be paid. Generally speaking, the contracts are all individual procurement
decisions by the customers and are not for significant periods of time, nor do they include renewal provisions. As such, all contracts have an economic life of significantly less
than a year. Accordingly, the Company expenses sales commissions when incurred. These costs are recorded within sales and marketing expenses.

The  Company  does  not  incur  any  costs  to  fulfill  the  contracts  with  customers  that  are  not  already  reported  in  compliance  with  another  applicable  standard  (for  example,
inventory or plant, property and equipment).

Cost of Revenue

Cost of revenue primarily consists of: direct materials, comprised principally of parts used in assembling equipment, together with crating and shipping costs; direct labor,
including salaries and other labor related expenses attributable to the Company’s manufacturing department; and allocated overhead cost, such as personnel cost, depreciation
expense, and allocated administrative costs associated with supply chain management and quality assurance activities, as well as shipping insurance premiums.

Research and Development Costs

Research and development costs relating to the development of new products and processes, including significant improvements and refinements to existing products or to the
process  of  supporting  customer  evaluations  of  tools,  including  the  development  of  new  tools  for  evaluation  by  customers  during  the  product  demonstration  process,  are
expensed as incurred.

Shipping and Handling Costs

Shipping and handling costs, which relate to transportation of products to customer locations, are charged to selling and marketing expense. For the years ended December 31,
2020, 2019 and 2018, shipping and handling costs included in sales and marketing expenses were $76, $172 and $146, respectively.

Borrowing Costs

Borrowing costs attributable directly to the acquisition, construction or production of qualifying assets that require a substantial period of time to be ready for their intended
use or sale are capitalized as part of the cost of those assets. Income earned on temporary investments of specific borrowings pending their expenditure on those assets is
deducted from borrowing costs capitalized. All other borrowing costs are recognized in interest expenses in the consolidated statements of operations and comprehensive
income in the period in which they are incurred. No borrowing costs were capitalized for the year ended December 31, 2020, 2019 or 2018.

Warranty

For each of its products, the Company generally provides a standard warranty ranging from 12 to 36 months and covering replacement of the product during the warranty
period.  The  Company  accounts  for  the  estimated  warranty  costs  as  sales  and  marketing  expenses  at  the  time  revenue  is  recognized.  Warranty  obligations  are  affected  by
historical  failure  rates  and  associated  replacement  costs.  Utilizing  historical  warranty  cost  records,  the  Company  calculates  a  rate  of  warranty  expenses  to  revenue  to
determine the estimated warranty charge. The Company updates these estimated charges on a regular basis. Warranty obligations are included in other payables and accrued
expenses in the consolidated balance sheets. The following table shows changes in the Company’s warranty obligations for the years ended December 31, 2020 and 2019,
respectively.

Balance at beginning of period
Additions
Utilized
Balance at end of period

Year Ended December 31,
2019

2020

2018

2,811  $
3,101 
(1,937) 

3,975  $

1,710  $
2,105 
(1,004) 

2,811  $

839 
1,412 
(541) 
1,710 

$

$

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Government Subsidies

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

ACM  Shanghai  has  received  six  special  government  grants  from  the  PRC’s  Ministry  of  Science  and  Technology,  the  Shanghai  Municipal  Commission  of  Economy  and
Information, and the Shanghai Science and Technology Committee. The first grant, which was awarded in 2008, relates to the development and commercialization of 65nm to
45nm  stress-free  polishing  technology.  The  second  grant  was  awarded  in  2009  to  fund  interest  expense  on  short-term  borrowings.  The  third  grant  was  made  in  2014  and
relates to the development of electro copper-plating technology. The fourth grant was made in June 2018 and related to development of polytetrafluoroethylene. The fifth
grant was made in 2020, and relates to the development of Tahoe single bench cleaning technologies. The sixth grant was made in 2020, and relates to the development of
backside cleaning technologies. These governmental authorities provide the majority of the funding, although ACM Shanghai is also required to invest certain amounts in the
projects.

The governmental grants contain certain operating conditions, and the Company is required to go through a government due diligence process once the project is complete.
The grants therefore are recorded as long-term liabilities upon receipt, although the Company is not required to return any funds it receives. Grant amounts are recognized in
our statements of operations and comprehensive income as follows:

●

●

Government subsidies relating to current expenses are recorded as reductions of those expenses in the periods in which the current expenses are recorded. For the
years ended December 31, 2020, 2019 and 2018, related government subsidies recognized as reductions of relevant expenses in the consolidated statements of
operations and comprehensive income were $2,658, $3,195 and $1,486, respectively.
Government subsidies related to depreciable assets are credited to income over the useful lives of the related assets for which the grant was received. For the years
ended  December  31,  2020,  2019  and  2018,  related  government  subsidies  recognized  as  other  income  in  the  consolidated  statements  of  operations  and
comprehensive income were $149, $147 and $144, respectively.

Unearned  government  subsidies  received  are  deferred  for  recognition  and  recorded  as  other  long-term  liabilities  (note  13)  in  the  balance  sheet  until  the  criteria  for  such
recognition are satisfied.

Stock-based Compensation

ACM grants stock options to employees and non-employee consultants and directors and accounts for those stock-based awards in accordance with FASB ASC Topic 718,
Compensation – Stock Compensation.

Stock-based awards granted to employees and non-employee consultants and directors are measured at the fair value of the awards on the grant date and are recognized as
expenses either (a) immediately on grant, if no vesting conditions are required or (b) using the graded vesting method, net of estimated forfeitures, over the requisite service
period. The fair value of stock options is determined using the Black-Scholes valuation model when there is only service condition attached or the Monte Carlo valuation
model when there is performance condition attached. Stock-based compensation expense, when recognized, is charged to the category of operating expense corresponding to
the service function of the employees and non-employee consultants and directors.

Income Taxes

The Company accounts for income taxes using the liability method whereby deferred tax asset and liability account balances are determined based on differences between the
financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to
reverse. The Company provides a valuation allowance, if necessary, to reduce deferred tax assets to their estimated realizable values.

In evaluating the ability to recover its deferred income tax assets, the Company considers all available positive and negative evidence, including its operating results, ongoing
tax planning and forecasts of future taxable income on a jurisdiction-by-jurisdiction basis. In the event the Company determines that it would be able to realize its deferred
income tax assets in the future in excess of their net recorded amount, it would make an adjustment to the valuation allowance that would reduce the provision for income
taxes. Conversely, in the event that all or part of the net deferred tax assets are determined not to be realizable in the future, an adjustment to the valuation allowance would be
charged to earnings in the period such determination is made.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

Tax benefits related to uncertain tax positions are recognized when it is more likely than not that a tax position will be sustained during an audit. Interest and penalties related
to unrecognized tax benefits are included within the provision for income tax.

Basic and Diluted Net Income per Common Share

Basic and diluted net income per common share are calculated as follows:

Year Ended December 31,
2019

2018

2020

Numerator:

Net income
Net income attributable to non-controlling interests and

  $

21,677    $

19,458    $

6,574 

redeemable non-controlling interests

2,897     

564     

- 

Net income available to common stockholders, basic and

diluted

Weighted average shares outstanding, basic

Effect of dilutive securities
Weighted average shares outstanding, diluted

  $

18,780    $

18,894    $

6,574 

    18,233,361      16,800,623      15,788,460 
    2,950,108      2,334,874      2,123,645 
    21,183,469      19,135,497      17,912,105 

Net income per common share:

Basic

Diluted

1.03     

0.89    $

1.12     

0.99    $

0.42 

0.37 

  $

Basic and diluted net income per common share are presented using the two-class method, which allocates undistributed earnings to common stock and any participating
securities according to dividend rights and participation rights on a proportionate basis. Under the two-class method, basic net income per common share is computed by
dividing  the  sum  of  distributed  and  undistributed  earnings  attributable  to  common  stockholders  by  the  weighted  average  number  of  shares  of  common  stock  outstanding
during the period. ACM did not have any participating securities outstanding during the three-year period ending December 31, 2020.

ACM  has  been  authorized  to  issue  Class  A  and  Class  B  common  stock  since  redomesticating  in  Delaware  in  November  2016.  The  two  classes  of  common  stock  are
substantially identical in all material respects, except for voting rights. Since ACM did not declare any dividends during the years ended December 31, 2020, 2019 and 2018,
the net income per common share attributable to each class is the same under the “two-class” method. As such, the two classes of common stock have been presented on a
combined basis in the consolidated statements of operations and comprehensive income and in the above computation of net income per common share.

Diluted and diluted net income per common share are presented using the two-class method, which allocates undistributed earnings to common stock and any participating
securities according to dividend rights and participation rights on a proportionate basis. Under the two-class method, basic net income (per common share is computed by
dividing  the  sum  of  distributed  and  undistributed  earnings  attributable  to  common  stockholders  by  the  weighted  average  number  of  shares  of  common  stock  outstanding
during the period. ACM did not have any participating securities outstanding during the three-year period ending December 31, 2020.

ACM  has  been  authorized  to  issue  Class  A  and  Class  B  common  stock  since  redomesticating  in  Delaware  in  November  2016.  The  two  classes  of  common  stock  are
substantially identical in all material respects, except for voting rights. Since ACM did not declare any dividends during the years ended December 31, 2020, 2019 and 2018,
the net income per common share attributable to each class is the same under the “two-class” method. As such, the two classes of common stock have been presented on a
combined basis in the consolidated statements of operations and comprehensive income and in the above computation of net income per common share.

Diluted net income per common share reflects the potential dilution from securities, including stock options and issued warrants, that could share in ACM’s earnings. Certain
potential dilutive securities were excluded from the net income per share calculation because the impact would be anti-dilutive. The number of potentially dilutive shares that
were not included in the calculation of diluted net income per share in the periods presented where their inclusion would be anti-dilutive were 78,000, 606,000 and 241,700
for the years ended December 31, 2020, 2019 and 2018, respectively.

Comprehensive Income Attributable to the Company

The Company applies FASB ASC Topic 220, Comprehensive Income, which establishes standards for the reporting and display of comprehensive income or loss, requiring its
components  to  be  reported  in  a  financial  statement  with  the  same  prominence  as  other  financial  statements.  The  comprehensive  income  attributable  to  the  Company  was
$25,312, $18,076 and $5,595 for the years ended December 31, 2020, 2019 and 2018, respectively.

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Statutory reserves

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The  income  of  ACM’s  PRC  subsidiaries  is  distributable  to  their  shareholders  after  transfers  to  reserves  as  required  under  relevant  PRC  laws  and  regulations  and  the
subsidiaries’ Articles of Association. As stipulated by the relevant laws and regulations in the PRC, the PRC subsidiaries are required to maintain reserves, including reserves
for  statutory  surpluses  and  public  welfare  funds  that  are  not  distributable  to  shareholders.  A  PRC  subsidiary’s  appropriations  to  the  reserves  are  approved  by  its  board  of
directors. At least 10% of annual statutory after-tax profits, as determined in accordance with PRC accounting standards and regulations, is required to be allocated to the
statutory surplus reserves. If the cumulative total of the statutory surplus reserves reaches 50% of a PRC subsidiary’s registered capital, any further appropriation is optional.

Statutory  surplus  reserves  may  be  used  to  offset  accumulated  losses  or  to  increase  the  registered  capital  of  a  PRC  subsidiary,  subject  to  approval  from  the  relevant  PRC
authorities, and are not available for dividend distribution to the subsidiary’s shareholders. The PRC subsidiaries are prohibited from distributing dividends unless any losses
from prior years have been offset. Except for offsetting prior years’ losses, however, statutory surplus reserves must be maintained at a minimum of 25% of share capital after
such usage. ACM Shanghai estimated a statutory surplus reserve of $3,065 and $1,427 based on an accumulated profit as of December 31, 2020 and 2019, respectively, which
is included in the accumulated surplus in the consolidated balance sheets.

Fair Value of Financial Instruments

Under the FASB’s authoritative guidance on fair value measurements, fair value is 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.  In  determining  the  fair  value,  the  Company  uses  various  methods  including  market,  income  and  cost
approaches.  Based  on  these  approaches,  the  Company  often  utilizes  certain  assumptions  that  market  participants  would  use  in  pricing  the  asset  or  liability,  including
assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable, market corroborated or generally unobservable
inputs. The Company uses valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs. Based on observability of the inputs
used in the valuation techniques, the Company is required to provide the following information according to the fair value hierarchy. The fair value hierarchy ranks the quality
and reliability of the information used to determine fair values. Financial assets and liabilities carried at fair value are classified and disclosed in one of the following three
categories:

Level  1:  Valuations  for  assets  and  liabilities  traded  in  active  exchange  markets.  Valuations  are  obtained  from  readily  available  pricing  sources  for  market  transactions
involving identical assets or liabilities.

Level 2: Valuations for assets and liabilities traded in less active dealer or broker markets. Valuations are obtained from third party pricing services for identical or similar
assets or liabilities.

Level 3: Valuations for assets and liabilities that are derived from other valuation methodologies, including option pricing models, discounted cash flow models and similar
techniques,  and  not  based  on  market  exchange,  dealer  or  broker  traded  transactions.  Level  3  valuations  incorporate  certain  unobservable  assumptions  and  projections  in
determining the fair value assigned to such assets.

All transfers between fair value hierarchy levels are recognized by the Company at the end of each reporting period. In certain cases, the inputs used to measure fair value
may  fall  into  different  levels  of  the  fair  value  hierarchy.  In  such  cases,  an  investment’s  level  within  the  fair  value  hierarchy  is  based  on  the  lowest  level  of  input  that  is
significant  to  the  fair  value  measurement  in  its  entirety  requires  judgment,  and  considers  factors  specific  to  the  investment.  The  inputs  or  methodology  used  for  valuing
financial instruments are not necessarily an indication of the risks associated with investment in those instruments.

Fair Value Measured or Disclosed on a Recurring Basis

Trading securities - The fair value of trading securities derives from the on quoted prices for identical securities in active markets at the balance sheet date, less a discount
applied to reflect the remaining lock-up period. The Company classifies the valuation techniques that use these inputs as Level 2 fair value measurement (note 15).

Financial liability – The fair value of financial liability are classified within Level 3 as the fair values are measured based on the inputs linked to the choice of settlement by
the counter party that are unobservable in the market.

Other financial items for disclosure purpose—The fair value of other financial items of the Company, other than long-term borrowings for disclosure purpose, including cash
and cash equivalents, accounts receivable, other receivables, short-term borrowings, accounts payable, advances from customers, and other payables and accrued expenses,
approximate their carrying value due to their short-term nature. The carrying value of the long-term borrowings which are subject to fixed interest rate approximates its fair
value as the market interest rate did not significantly change from the borrowing date to December 31, 2020.

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Operating and Financial Risks

Concentration of Credit Risk

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

Financial  instruments  that  potentially  subject  the  Company  to  credit  risk  consist  principally  of  cash  and  cash  equivalents,  restricted  cash  and  accounts  receivable.  The
Company deposits and invests its cash with financial institutions that management believes are creditworthy.

The  Company  is  potentially  subject  to  concentrations  of  credit  risks  in  its  accounts  receivable.  In  each  of  the  years  ended  December  31,  2020  and  2019,  a  total  of  three
customers individually accounted for greater than ten percent of the Company’s revenue:

Customer A
Customer B
Customer C
Customer D
Total

Interest Rate Risk

December 31,

2020

2019

36.93%   
* 
26.77%   
12.10%   
75.80%   

26.46%
19.84%
27.50%

* 

73.79%

As of December 31, 2020 and 2019, the balance of the Company’s short term bank borrowings (note 9), matured at various dates within the following year and did not expose
the Company to interest rate risk.  As of December 31, 2020, the balance of the Company’s long-term borrowings (note 12) carried a fixed interest rate and the Company may
have been exposed to fair value interest rate risk.

Liquidity Risk

The Company’s working capital at December 31, 2020 and 2019 was sufficient to meet its then-current requirements. The Company may, however, require additional cash
due to changing business conditions or other future developments, including any investments or acquisitions the Company decides to pursue. In the long run, the Company
intends to rely primarily on cash flows from operations and additional borrowings from financial institutions in order to meet its cash needs. If those sources are insufficient to
meet cash requirements, the Company may seek to issue additional debt or equity.

Country Risk

The Company has significant investments in the PRC. The operating results of the Company may be adversely affected by changes in the political and social conditions in the
PRC and by changes in PRC government policies with respect to laws and regulations, anti-inflationary measures, currency conversion and remittance abroad, and rates and
methods of taxation, among other things.

Foreign Currency Risk and Translation

The  Company’s  consolidated  financial  statements  are  presented  in  U.S.  dollars,  which  is  the  Company’s  reporting  currency,  while  the  functional  currency  of  ACM’s
subsidiaries  is  the  Chinese  Renminbi  (“RMB”),  and  the  Korean  Won.  Changes  in  the  relative  values  of  U.S.  dollars  and  RMB  affect  the  Company’s  reported  levels  of
revenues and profitability as the results of its operations are translated from RMB into U.S. dollars for reporting purposes. Because the Company has not engaged in any
hedging activities, it cannot predict the impact of future exchange rate fluctuations on the results of its operations and it may experience economic losses as a result of foreign
currency exchange rate fluctuations.

Transactions  of  ACM’s  subsidiaries  involving  foreign  currencies  are  recorded  in  functional  currency  according  to  the  rate  of  exchange  prevailing  on  the  date  when  the
transaction occurs. The ending balances of the Company’s foreign currency accounts are converted into functional currency using the rate of exchange prevailing at the end of
each  reporting  period.  Net  gains  and  losses  resulting  from  foreign  exchange  fluctuations  as  marked  to  market  at  year-end  are  included  in  the  consolidated  statements  of
operations and comprehensive income. Total foreign currency translation adjustment was $10,493, ($899) and ($979) for the years ended December 31, 2020, 2019 and 2018,
respectively.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

In accordance with FASB ASC Topic 830, Foreign Currency Matters, the Company translates assets and liabilities into U.S. dollars from RMB or Korean Won using the rate
of exchange prevailing at the applicable balance sheet date and the consolidated statements of operations and comprehensive income and consolidated statements of cash
flows  are  translated  at  an  average  rate  during  the  reporting  period.  Adjustments  resulting  from  the  translation  are  recorded  in  stockholders’  (deficit)  equity  as  part  of
accumulated other comprehensive income (loss). Any differences between the initially recorded amount and the settlement amount are recorded as a gain or loss on foreign
currency transaction in the consolidated statements of operations and comprehensive income.

Translations of amounts from RMB and Korean Won into U.S. dollars were made at the following exchange rates for the respective dates and periods:

Consolidated balance sheets:
RMB to $1.00
KRW to $1.00

At December 31,
2019

2018

2020

6.5232     
1,088.14     

6.9784     
1,156.07     

6.8634 
1,114.83 

Year Ended December 31,
2019

2020

2018

Consolidated statements of operations and comprehensive income:
RMB to $1.00
KRW to $1.00

6.8966     
1,179.25     

6.8966     
1,165.50     

6.6181 
1,100.11 

Recently Adopted Accounting Pronouncements

On March 27, 2020, the U.S. Coronavirus Aid, Relief and Economic Security (“CARES”) Act was enacted and signed into law. Certain provisions of the CARES Act impact
the 2019 income tax provision computations of the Company and were reflected in 2020, or the period of enactment. The CARES Act contains modifications on the limitation
of business interest for tax years beginning in 2019 and 2020. The modifications to §163(j) increase the allowable business interest deduction from 30% of adjusted taxable
income to 50% of adjusted taxable income. The modification to the interest expense limitation did not have an impact on the Company’s taxable income or net operating
losses for the year ended December 31, 2020.

In  August  2018,  the  FASB  issued  Accounting  Standards  Update  (“ASU”)  2018-13,  Fair  Value  Measurement  (Topic  820),  which  eliminates,  adds  and  modifies  certain
disclosure requirements for fair value measurements. The modified standard eliminates the requirement to disclose changes in unrealized gains and losses included in earnings
for recurring Level 3 fair value measurements and requires changes in unrealized gains and losses be included in other comprehensive income for recurring Level 3 fair value
measurements of instruments. The standard also requires the disclosure of the range and weighted average used to develop significant unobservable inputs and how weighted
average is calculate for recurring and nonrecurring Level 3 fair value measurements. The amendment is effective for fiscal years beginning after December 15, 2019 and
interim periods within that fiscal year, with early adoption permitted. The adoption of ASU 2018-13 did not have a material impact on the Company’s consolidated financial
statements.

Recent Accounting Pronouncements Not Yet Adopted

In June  2016,  the  FASB  issued  ASU  2016-13,  Financial  Instruments-Credit  Losses  (Topic  326):  Measurement  of  Credit  Losses  on  Financial  Instruments.  ASU  2016-13
replaced  the  pre-existing  incurred  loss  impairment  methodology  with  a  methodology  that  reflects  expected  credit  losses  and  requires  consideration  of  a  broader  range  of
reasonable and supportable information to inform credit loss estimates. ASU 2016-13 requires use of a forward-looking expected credit loss model for accounts receivables,
loans  and  other  financial  instruments.  ASU  2016-13  is  effective  for  fiscal  years  beginning  after  December  15,  2019,  with  early  adoption  permitted.  In  October  2019,  the
FASB issued ASU 2019-10, Financial Instruments – Credit Losses (Topic 326), Derivatives and Hedging (Topic 815) and Leases (Topic 842), which defers the effective date
for  public  filers  that  are  considered  small  reporting  companies  (“SRC”)  as  defined  by  the  Securities  and  Exchange  Commission  (“SEC”)  to  fiscal  years  beginning  after
December 15, 2022, including interim periods within those fiscal years.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

Since the Company was eligible to be an SRC based on the Company’s most recent SRC determination as of November 15, 2019 (which is the issuance date of ASU 2019-
10) in accordance with SEC regulations, the Company will adopt the standards for the year beginning January 1, 2023. Adoption of the standard requires using a modified
retrospective approach through a cumulative-effect adjustment to retained earnings as of the effective date to align existing credit loss methodology with the new standard.
The Company is evaluating the impact of this standard on its consolidated financial statements, including accounting policies, processes and systems and expects the standard
will have a minor impact on its consolidated financial statements.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 will simplify the accounting
for income taxes by removing certain exceptions to the general principles in Topic 740. The amendments also improve consistent application of and simplify GAAP for other
areas of Topic 740 by clarifying and amending existing guidance. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods
within those fiscal years, beginning after December 15, 2020. ASU 2019-12 will be effective for the Company in the first quarter of 2021. The Company does not expect the
adoption of the new accounting rules to have a material impact on the Company’s financial condition, results of operations, cash flows or disclosures.

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU
2020-04  provide  optional  expedients  and  exceptions  for  applying  GAAP  to  contracts,  hedging relationships,  and  other  transactions  affected  by  reference  rate  reform.  The
amendments in this standard can be applied anytime between the first quarter of 2020 and the fourth quarter of 2022. The Company is currently in the process of evaluating
the impact of adoption of the new rules on the Company’s financial condition, results of operations, cash flows and disclosures.

NOTE 3 – REVENUE FROM CONTRACTS WITH CUSTOMERS

The Company assesses revenues based upon the nature or type of goods or services it provides and the geographic location of the related businesses. The following tables
present disaggregated revenue information:

Single Wafer Cleaning, Tahoe and Semi-Critical Cleaning Equipment
ECP (front-end and packaging), Furnace and Other Technologies
Advanced Packaging (exclude ECP), Services & Spares
Total Revenue By Product Category

Wet cleaning and other front-end processing tools
Advanced packaging, other back-end processing tools, services and spares
Total Revenue Front-End and Back-End

Mainland China
Other Regions

  $

  $

Year Ended December 31,
2019

2020

2018

  $

  $

  $

131,248 
13,343 
12,033 
156,624 

  $

  $

136,317 
20,307 
156,624 

  $

90,501    $
6,900     
10,124     
107,524    $

90,935     
16,590     
107,524    $

68,341 
- 
6,302 
74,643 

68,366 
6,277 
74,643 

Year Ended December 31,
2019
103,467    $
4,057     
107,524    $

2020
154,359    $
2,265     
156,624    $

2018

69,866 
4,777 
74,643 

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 4 – ACCOUNTS RECEIVABLE

At December 31, 2020 and 2019, accounts receivable consisted of the following:

Accounts receivable
Less: Allowance for doubtful accounts
Total

December 31,

2020

2019

  $

  $

56,441    $
-     
56,441    $

31,091 
- 
31,091 

The Company reviews accounts receivable on a periodic basis and makes general and specific allowances when there is doubt as to the collectability of individual balances.
No  allowance  for  doubtful  accounts  was  considered  necessary  at  December  31,  2020  and  2019.  At  December  31,  2020  and  2019,  accounts  receivable  of  $0  and  $1,433,
respectively, were pledged as collateral for borrowings from financial institutions (note 9).

 NOTE 5 – INVENTORIES

At December 31, 2020 and 2019, inventory consisted of the following:

Raw materials
Work in process
Finished goods
Total inventory

December 31,

2020

2019

  $

  $

32,391    $
23,871     
32,377     
88,639    $

15,105 
10,407 
19,284 
44,796 

At  December  31,  2020  and  2019,  the  Company  held  an  inventory  reserve  of  $1,140  and  $0,  respectively.  System  shipments  of  first-tools  to  an  existing  or  prospective
customer, for which ownership does not transfer until customer acceptance, are classified as finished goods inventory and carried at cost until ownership is transferred.

NOTE 6 – PROPERTY, PLANT AND EQUIPMENT, NET

At December 31, 2020 and 2019, property, plant and equipment consisted of the following:

Manufacturing equipment
Office equipment
Transportation equipment
Leasehold improvement
Total cost
Less: Total accumulated depreciation
Construction in progress
Total property, plant and equipment, net

December 31,

2020

2019

5,966    $
1,047     
216     
2,398     
9,627     
(3,745)    
2,310     
8,192    $

3,902 
627 
124 
1,442 
6,095 
(3,077)
601 
3,619 

  $

  $

Depreciation expense was $826, $713 and $350 for the years ended December 31, 2020, 2019 and 2018, respectively. During the years ended December 31, 2020 and 2019,
the Company retired certain fully depreciated manufacturing equipment with cost of $446 and $5,824, respectively.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 7 – LAND USE RIGHT, NET

 A summary of land use right is as follows:

Land use right purchase amount
Less: Accumulated amortization
Land use right, net

December 31,

2020

2019

  $

  $

9,744    $
(98)    
9,646    $

- 
- 
- 

In 2020 ACM Shanghai, through its wholly owned subsidiary Shengwei Research (Shanghai), Inc., entered into an agreement for a 50-year land use right in the Lingang
region of Shanghai. In July 2020, Shengwei Research (Shanghai), Inc. began a multi-year construction project for a new 1,000,000 square foot development and production
center that will incorporate new manufacturing systems and automation technologies, and will provide floor space to support significantly increase production capacity and
related research and development activities.

The amortization for the year ended December 31, 2020 was $98.

The annual amortization of land use right for each of the five succeeding years is as follows:

 Year ending December 31,

2021
2022
2023
2024
2025

NOTE 8 – OTHER LONG-TERM ASSETS

At December 31, 2020 and 2019, other long-term assets consisted of the following:

Prepayment for property
Security deposit for land use right
Others
Total other long-term assets

  $

195 
195 
195 
195 
195 

December 31,

2020

2019

  $

  $

39,450    $
756     
290     
40,496    $

- 
- 
192 
192 

The prepayment for property is for the housing in Lingang, Shanghai. The property is pledged for a long-term loan from China Merchants Bank (note 12).

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 9 – SHORT-TERM BORROWINGS

At December 31, 2020 and December 31, 2019, short-term and long-term borrowings consisted of the following:

Line of credit up to RMB 50,000 from Bank of Shanghai Pudong Branch, due on January 23, 2020 with an annual interest rate of

5.22%. It was fully repaid on January 23, 2020. *1

Line of credit up to RMB 20,000 from Shanghai Rural Commercial Bank, due on February 21, 2020 with an annual interest rate of

5.66%, guaranteed by and pledged by accounts receivable. It was fully repaid on February 21, 2020.

Line of credit up to RMB 20,000 from Bank of Communications,

1)due on January 18, 2020 with an annual interest rate of 5.66% and fully repaid on January 19, 2020.
2)due on January 22, 2020 with an annual interest rate of 5.66% and fully repaid on January 22, 2020.
3)due on February 14, 2020 with an annual interest rate of 5.66% and fully repaid on February 14, 2020.

Line of credit up to RMB 50,000 from China Everbright Bank,

1)due on March 25, 2020 with an annual interest rate of 4.94% and fully repaid on March 24, 2020. *2
2)due on April 17, 2020 with an annual interest rate of 5.66% and fully repaid on April 2, 2020. *2

Line of credit up to RMB 80,000 from China Everbright Bank,

1)due on April 1, 2021 with an annual interest rate of 4.70%. *2
2)due on June 27, 2021 with an annual interest rate of 4.25%. *2
3)due on April 29, 2021 with an annual interest rate of 2.80%. *2
4)due on June 27, 2021 with an annual interest rate of 2.70%. *2
Line of credit up to RMB 20,000 from Bank of Communications,
1)due on April 12, 2021 with an annual interest rate of 4.65%.
2)due on May 24, 2021 with an annual interest rate of 3.65%.

Line of credit up to RMB 70,000 from Bank of Shanghai Pudong Branch,

1)due on May 27, 2021 with an annual interest rate of 4.68%. *1
2)due on June 27, 2021 with an annual interest rate of 4.68%. *1
3)due on May 28, 2021 with an annual interest rate of 3.48%. *1
4)due on June 7, 2021 with an annual interest rate of 3.50%. *1
5)due on June 16, 2021 with an annual interest rate of 3.50%. *1

Line of credit up to RMB 80,000 from China Merchants Bank,
1)due on August 10, 2021 with annual interest rate of 3.85%.
2)due on August 25, 2021 with annual interest rate of 3.85%.

December 31,
2020

December 31,
2019

-     

-     

-     
-     
-     

-     
-     

4,599     
1,380     
820     
2,080     

1,533     
1,533     

2,575     
1,380     
2,442     
1,521     
1,838     

1,380     
3,066     

5,057 

1,433 

1,433 
717 
717 

3,250 
1,146 

- 
- 
- 
- 

- 
- 

- 
- 
- 
- 
- 

- 
- 

Total

  $

26,147    $

13,753 

*1 guaranteed by ACM’s Chief Executive Officer and Cleanchip Technologies Limited
*2 guaranteed by ACM’s Chief Executive Officer

For the years ended December 31, 2020, 2019 and 2018, interest expense related to short-term borrowings amounted to $897, $745 and $498, respectively.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 10 – OTHER PAYABLE AND ACCRUED EXPENSES

At December 31, 2020 and 2019, other payable and accrued expenses consisted of the following:

Accrued commissions
Accrued warranty
Accrued payroll
Accrued professional fees
Accrued machine testing fees
Others
Total

NOTE 11 – LEASES

December 31,

2020

2019

7,127    $
3,975     
3,068     
384     
1,595     
2,656     
18,805    $

4,082 
2,811 
2,092 
165 
1,456 
2,268 
12,874 

  $

  $

The Company leases space under non-cancelable operating leases for several office and manufacturing locations. These leases do not have significant rent escalation holidays,
concessions, leasehold improvement incentives, or other build-out clauses. Further, the leases do not contain contingent rent provisions.

Most leases include one or more options to renew. The exercise of lease renewal options is typically at the Company’s sole discretion; therefore, the majority of renewals to
extend  the  lease  terms  are  not  included  in  the  Company’s  right-of-use  assets  and  lease  liabilities  as  they  are  not  reasonably  certain  of  exercise.  The  Company  regularly
evaluates the renewal options, and when they are reasonably certain of exercise, the Company includes the renewal period in its lease term.

As  most  of  the  Company’s  leases  do  not  provide  an  implicit  rate,  the  Company  uses  its  incremental  borrowing  rate  based  on  the  information  available  at  the  lease
commencement date in determining the present value of the lease payments. The Company has a centrally managed treasury function; therefore, based on the applicable lease
terms and the current economic environment, it applies a portfolio approach for determining the incremental borrowing rate.

The components of lease expense were as follows:

Operating lease cost
Short-term lease cost
Lease cost

  Year Ended December 31,

2020

2019

  $

  $

1,541    $
236     
1,777    $

1,432 
165 
1,597 

Supplemental cash flow information related to operating leases was as follows for the years ended December 31, 2020 and 2019:

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

Operating cash outflow from operating leases

Maturities of lease liabilities for all operating leases were as follows as of December 31, 2020:

  Year Ended December 31,

2020

2019

  $

1,777    $

1,597 

2021
2022
2023
2024
2025
 Total lease payments
 Less: Interest
 Present value of lease liabilities

93

 December 31, 
1,642 
 $
1,617 
912 
872 
22 
5,065 
(768)
4,297 

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The weighted average remaining lease terms and discount rates for all operating leases were as follows as of December 31, 2020 and 2019:

 Remaining lease term and discount rate:
 Weighted average remaining lease term (years)
 Weighted average discount rate

NOTE 12 – LONG-TERM BORROWINGS

At December 31, 2020 and 2019, long-term borrowings consisted of the following:

December 31,

2020

2019

2.11 
5.14%   

3.02 
5.43%

Loan from China Merchants Bank
Less: Current portion

  December 31,
  2020     2019
 $ 19,570   $
(1,591)  
 $ 17,979   $

- 
- 
- 

The loan from China Merchants Bank is for the purpose of purchasing property in Lingang, Shanghai. The loan is repayable in 120 installments with the last installment due
in November 2030,  with  an  annual  interest  rate  of  4.65%.  The  loan  is  pledged  by  the  property  of  Shengwei  Research  (Shanghai)  Inc.  and  guaranteed  by  ACM  Research
(Shanghai) Inc. As of December 31, 2020, the right certificate of the pledged property has not been obtained and the procedures of the formal pledge registration in the bank
had not been completed.

Scheduled principal payments for the outstanding long-term loan as of December 31, 2020 are as follows:

Year ending December 31,

2021
2022
2023
2024
2025 and onwards

 $ 1,591 
1,666 
1,745 
1,828 
   12,740 
 $ 19,570 

For the year ended December 31, 2020, interest expense related to long-term borrowings amounted to $72.

NOTE 13 – OTHER LONG-TERM LIABILITIES

Other long-term liabilities represent government subsidies received from PRC governmental authorities for development and commercialization of certain technology but not
yet recognized (note 2). As of December 31, 2020 and 2019, other long-term liabilities consisted of the following unearned government subsidies:

Subsidies to Stress Free Polishing project, commenced in 2008 and 2017
Subsidies to Electro Copper Plating project, commenced in 2014
Subsidies to Polytetrafluoroethylene, commenced in 2018
Subsidies to Tahoe-Single Bench Clean, commenced in 2020
Subsidies to Backside Clean-YMTC National Project, commenced in 2020
Other
Total

94

December 31,

2020

2019

1,266    $
2,156     
130     
1,544     
2,591     
347     
8,034    $

1,251 
2,666 
135 
- 
- 
134 
4,186 

  $

  $

 
 
 
 
 
 
 
 
   
 
   
 
   
   
   
 
 
 
 
  
 
  
 
  
  
  
 
 
 
 
 
   
 
   
   
   
   
   
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NOTE 14 – LONG-TERM INVESTMENT

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

On September 6, 2017, ACM and Ninebell Co., Ltd. (“Ninebell”), a Korean company that is one of the Company’s principal material suppliers, entered into an ordinary share
purchase agreement, effective as of September 11, 2017, pursuant to which Ninebell issued to ACM ordinary shares representing 20% of Ninebell’s post-closing equity for a
purchase price of $1,200, and a common stock purchase agreement, effective as of September 11, 2017, pursuant to which ACM issued 133,334 shares of Class A common
stock to Ninebell for a purchase price of $1,000 at $7.50 per share. The investment in Ninebell is accounted for under the equity method.

On June 27, 2019, ACM Shanghai and Shengyi Semiconductor Technology Co., Ltd. (“Shengyi”), a company based in Wuxi, China that is one of the Company’s component
suppliers, entered into an agreement pursuant to which Shengyi issued to ACM Shanghai shares representing 15% of Shengyi’s post-closing equity for a purchase price of
$109. The investment in Shengyi is accounted for under the equity method.

On September 5, 2019, ACM Shanghai, entered into a Partnership Agreement with six other investors, as limited partners, and Beijing Shixi Qingliu Investment Co., Ltd., as
general partner and manager, with respect to the formation of Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership (LP), a Chinese limited
partnership based in Hefei, China. Pursuant to such Partnership Agreement, on September 30, 2019, ACM Shanghai invested RMB 30,000 ($4,200), which represented 10%
of the partnership’s total subscribed capital. The investment in Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership (LP) is accounted for under
the equity method in accordance with ASC 323-30-S99-1.

The Company treats the equity investment in the consolidated financial statements under the equity method. Under the equity method, the investment is initially recorded at
cost,  adjusted  for  any  excess  of  the  Company’s  share  of  the  incorporated-date  fair  values  of  the  investee’s  identifiable  net  assets  over  the  cost  of  the  investment  (if  any).
Thereafter, the investment is adjusted for the post incorporation change in the Company’s share of the investee’s net assets and any impairment loss relating to the investment.
For the years ended December 31, 2020 and 2019, the Company’s share of equity investees’ net income was $655 and $168, respectively, which was included in income on
equity method investment in the accompanying consolidated statements of operations and comprehensive income. For the year ended December 31, 2020, dividends received
from its equity investee was $555, which was offsetting in part the carrying value of the Company’s share of equity investees’ net income.

Ninebell
Shengyi
Hefei Shixi
Total

December 31,

2020

2019

  $

  $

1,666    $
134     
4,540     
6,340    $

1,538 
107 
4,289 
5,934 

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NOTE 15 – TRADING SECURITIES

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

Pursuant to a Partnership Agreement dated June 9, 2020 (the “Partnership Agreement”) and a Supplementary Agreement thereto dated June 15, 2020 (the “Supplementary
Agreement”), ACM Shanghai became a limited partner of Qingdao Fortune-Tech Xinxing Capital Partnership (L.P.), a Chinese limited partnership based in Shanghai, China
(the “Partnership”) of which China Fortune-Tech Capital Co., Ltd serves as general partner and thirteen unaffiliated entities serve, with ACM Shanghai, as limited partners.
The  Partnership  was  formed  to  establish  a  special  fund  that  would  purchase,  in  a  strategic  placement,  shares  of  Semiconductor  Manufacturing  International  Corporation,
(“SMIC”)  to  be  listed  on  the  STAR  Market.  SMIC  is  a  Shanghai-based  foundry  that  has  been  a  customer  of  the  Company’s  single-wafer  wet-cleaning  tools.  The  limited
partners of the Partnership contributed to the fund a total of RMB 2.224 billion ($315,000), of which ACM Shanghai contributed RMB 100 million ($14.2 million), or 4.3%
of the total contribution, on June 18, 2020.

Upon the closing of the SMIC offering in July 2020, the initial number of SMIC shares owned by the Partnership was apportioned to all of the limited partners in proportion
to their respective capital contributions (4.3% in the case of ACM Shanghai). All of the SMIC shares acquired by the Partnership are subject, under applicable Chinese laws,
to lock-up restrictions that prevent sales of the shares for one year after the shares were acquired. Thereafter an individual limited partner will be able to instruct the general
partner to sell, on behalf of the limited partner, all or a portion of the limited partner’s apportioned shares, subject to compliance with all laws, regulations, trading rules, the
Partnership Agreement and the Supplementary Agreement. Alternatively, following the lock-up period, limited partners holding at least thirty percent of the total SMIC shares
held by the Partnership will be able, pursuant to a call auction in accordance with the Supplementary Agreement, to cause the general partner to arrange to sell all of the
shares desired to be offered by each of the limited partners that complies with procedural requirements provided in the Supplementary Agreement.

As SMIC was listed on the STAR Market in July 2020, ACM Shanghai’s investment is accounted for as trading securities and is stated at fair market value, which is classified
as Level 2 of the hierarchy established under ASC 820 with valuations based on quoted prices for identical securities in active markets, less a discount applied to reflect the
remaining lock-up period.

The components of trading securities were as follows:

Trading securities listed in Shanghai Stock Exchange
Cost

Market value

December 31,

2020

2019

  $

  $

15,020    $

28,239    $

- 

- 

Unrealized gain on trading securities, net of exchange difference amounted to $12,574 for the year ended December 31, 2020.

NOTE 16 – FINANCIAL LIABILITY CARRIED AT FAIR VALUE

In  December  2016  Shengxin  (Shanghai)  Management  Consulting  Limited  Partnership  (“SMC”)  paid  20,123,500  RMB  ($2,981  as  of  the  date  of  funding)  (the  “SMC
Investment”) to ACM Shanghai for investment pursuant to terms to be subsequently negotiated. SMC is a PRC limited partnership partially owned by employees of ACM
Shanghai.

In March 2017 (a) ACM issued to SMC a warrant (the “Warrant”) exercisable to purchase 397,502 shares of Class A common stock at a price of $7.50 per share, for a total
exercise price of $2,981, and (b) ACM Shanghai agreed to repay the SMC Investment within 60 days after the exercise of the Warrant. In March 2018 SMC exercised the
Warrant  in  full,  as  a  result  of  which  (1)  ACM  issued  397,502  shares  of  Class  A  common  stock  to  SMC,  (2)  SMC  borrowed  the  funds  to  pay  the  Warrant  exercise  price
pursuant to a senior secured promissory note (the “SMC Note”) in the principal amount of $2,981 issued to ACM Shanghai, which in turn issued to ACM a promissory note
(the “Intercompany Note”) in the principal amount of $2,981 in payment of the Warrant exercise price. Each of the SMC Note and the Intercompany Note bore interest at a
rate of 3.01% per annum and matured on August 17, 2023. The SMC Note was secured by a pledge of the shares issued upon exercise of the Warrant.

In connection with its follow-on public offering of Class A common stock in August 2019, ACM agreed to purchase a total of 154,821 of the Warrant shares from SMC at a
per share price of $13.195, of which (a) $1,161 was applied to reduce SMC’s obligations to ACM Shanghai under the SMC Note, and which ACM then withheld for its own
account and applied to reduce ACM Shanghai’s obligations to ACM under the Intercompany Note, and (b) the remaining $882 was paid to SMC. In a separate transaction,
ACM Shanghai repaid $1,161 of the SMC Investment in cash, which reduced the amount of the SMC Investment due to SMC to $1,820.

The SMC Note and SMC Investment are offsetting items in the Company’s consolidated balance sheet in accordance with ASC 210-20-45-1 up to April 30, 2020.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

In preparation for the STAR IPO, ACM Shanghai was required to terminate its financial relationship with SMC. In order to facilitate such termination, on April 30, 2020,
ACM entered into two agreements relating to outstanding obligations among ACM Research, ACM Shanghai and SMC. Pursuant to such agreements: (i) ACM Shanghai
assigned  to  ACM  its  rights  under  the  SMC  Note,  including  the  right  to  receive  payment  of  the  $1,820  payable  thereunder;  (ii)  ACM  cancelled  the  outstanding  $1,820
obligation of ACM Shanghai under the Intercompany Note; (iii) SMC surrendered its remaining 242,681 Warrant shares to ACM Research; and (iv) in exchange for such
242,681 Warrant shares, ACM agreed to deliver to SMC certain consideration (“SMC Consideration”) agreed upon by ACM Research and SMC, subject to obtaining certain
PRC regulatory approvals. Under the agreements, if the required approvals were not obtained by December 31, 2023, ACM would cancel the SMC Note as consideration for
the 242,681 Warrant shares. In a separate transaction in April 2020, ACM Shanghai repaid the remaining $1,820 of the SMC Investment in cash.

For the period beginning April 30, 2020, the SMC Consideration is accounted for as a financial liability, and the Company applies fair value option to measure the SMC
Consideration in accordance with ASC 825-10-15-4a. On April 30, 2020, the SMC Consideration was $9,715 which was for cancellation of the Warrant shares and recorded
in the equity. The financial liability was remeasured to fair value as of the end of each of the reporting periods.

On July 29, 2020, ACM and SMC entered into an amended agreement under which, in settlement of the SMC Consideration, ACM issued to SMC a warrant (the “SMC 2020
Warrant”)  to  purchase  242,681  shares  of  Class  A  common  stock  at  a  purchase  price  of  $7.50  per  share,  and  ACM  cancelled  the  SMC  Note.  The  financial  liability  was
remeasured to fair value of $21,679 as of July 29, 2020, and was retired with the issuance of the SMC 2020 Warrant.  The Company recognized a change in fair value of
financial liability of $11,964 for the year ended December 31, 2020, which was reflected in the consolidated statement of operations. The Company recorded the difference of
$19,859 between the SMC 2020 Warrant of $21,679 and the SMC Note of $1,820 into the equity.

The SMC 2020 Warrant was initially measured at fair value at the issuance date and classified as equity permanently in accordance with ASC 815. The fair value of the SMC
2020 Warrant amounted to $21,679, based on the grant date using the Black-Scholes valuation model with the following assumptions:

Fair value of common share(1)
Expected term in years(2)
Volatility(3)
Risk-free interest rate(4)
Expected dividend(5)

July 29,
2020  
 $ 89.28 
3.42 
47.42%
0.15%
0%

(1)
(2)
(3)
(4)
(5)

Fair value of Class A common stock was the closing market price of the Class A common stock on July 29, 2020.
Expected term of share options is based on the average of the vesting period and the contractual term for each grant according to Staff Accounting Bulletin 110.
Volatility is calculated based on the historical volatility of the stock of companies comparable to ACM in the period equal to the expected term of each grant.
Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of grant.
Expected dividend is assumed to be 0%, as ACM has no history or expectation of paying a dividend on its common stock.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 17 – RELATED PARTY BALANCES AND TRANSACTIONS

Prepaid expenses
Ninebell

Accounts payable
Ninebell
Shengyi
Total

Purchase of materials
Ninebell
Shengyi
Total

Service fee charged by
Shengyi
Ninebell
Total

  December 31, 2020    December 31, 2019 
348 
  $

1,607    $

  December 31, 2020    December 31, 2019 
727 
  $
488 
1,215 

2,898    $
1,195     
4,093    $

  $

Year Ended December 31
2019

2020

2018

  $

  $

  $

15,251    $
2,300     
17,551    $

8,572    $
856     
9,428    $

7,785 
- 
7,785 

Year Ended December 31
2019

2020

2018

322    $
22     
344     

-    $
-     
-     

- 
- 
- 

NOTE 18 – COMMON STOCK

ACM is authorized to issue 50,000,000 shares of Class A common stock and 2,409,738 shares of Class B common stock, each with a par value of $0.0001. Each share of
Class A common stock is entitled to one vote, and each share of Class B common stock is entitled to twenty votes and is convertible at any time into one share of Class A
common stock. Shares of Class A common stock and Class B common stock are treated equally, identically and ratably with respect to any dividends declared by the Board of
Directors unless the Board of Directors declares different dividends to the Class A common stock and Class B common stock by getting approval from a majority of common
stock holders.

On March 30, 2018, SMC exercised the SMC Warrant in full (note 16) to purchase 397,502 shares of Class A common stock. During the year ended December  31,  2020,
SMC transferred and cancelled its ownership of 242,681 shares of Class A common stock to ACM in exchange for the SMC 2020 Warrant (note 16).

During the year ended December 31, 2020, ACM issued 832,504 shares of Class A common stock upon option exercises by employees and non-employees and an additional
60,002 shares of Class A common stock upon conversion of an equal number of shares of Class B common stock. During the year ended December 31, 2019, ACM issued
195,297 shares of Class A common stock upon option exercises by employees and non-employees and an additional 35,815 shares of Class A common stock upon conversion
of an equal number of shares of Class B common stock. During the year ended December 31, 2018, the Company issued 265,952 shares of Class A common stock upon
options exercises by certain employees and non-employees and an additional 511,315 shares of Class A common stock upon conversion of an equal number of shares of Class
B common stock.

During the year ended December 31, 2020, ACM issued 64,717 shares of Class A common stock upon cashless warrant exercises by non-employees.  During the year ended
December 31, 2019, ACM issued 1,438 shares of Class A common stock upon cashless warrant exercises by non-employees.

In August 2019, ACM sold a total of 2,053,572 shares of Class A common stock to the public at a price of $14.00 per share for aggregate gross proceeds of $28,750. Net
proceeds to ACM excluded an underwriting discount and offering expenses totaling $2,287. ACM repurchased outstanding shares from certain directors, employees and SMC
upon the exercise of the underwriters’ over-allotment option using a portion of ACM’s net proceeds from the public offering for the purpose of share constructive retirement.
A total of 214,286 repurchased shares were accounted for share retirement during the year ended December 31, 2019.

At December 31, 2020 and 2019, the number of shares of Class A common stock issued and outstanding was 16,896,693, and 16,182,151, respectively. At December  31,
2020 and 2019, the number of shares of Class B common stock issued and outstanding was 1,802,606 and 1,862,608, respectively.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

NOTE 19 – REDEEMABLE NON-CONTROLLING INTERESTS

As discussed in note 1, during the quarter ended September 30, 2019, ACM Shanghai issued to certain private placement investors (the “First Tranche Investors”) equity in
the form of redeemable non-controlling interests, representing 4.2% of the outstanding shares of ACM Shanghai. Two of the First Tranche Investors were entities owned by
certain employees of ACM Shanghai (the “Employee Entities”), and the purchase price paid by the Employee Entities represented a discount of 20% from the purchase price
paid by the other First Tranche Investors. The discount granted to the Employee Entities is classified as stock-based compensation, as further discussed in note 20.

In  addition  to  the  capital  increase  agreement  with  the  First  Tranche  Investors,  ACM  Shanghai  entered  into  a  supplemental  agreement  (a  “First  Tranche  Supplemental
Agreement”) with each of the First Tranche Investors. Under each First Tranche Supplemental Agreement, ACM Shanghai and the First Tranche Investor party thereto agreed
to use their respective best efforts to facilitate the completion of the STAR Listing and the STAR IPO within three years from the date on which ACM Shanghai shares were
issued  to  the  First  Tranche  Investors.  If,  by  the  end  of  such  three-year  period,  the  STAR  Listing  and  the  STAR  IPO  have  not  been  completed  and  the  China  Securities
Regulatory Commission has not otherwise approved the registration of the STAR Listing registration application, each First Tranche Investor and ACM Shanghai would have
the right to require that ACM Shanghai repurchase the First Tranche Investor’s shares for a price equal to the initial purchase price paid by the First Tranche Investor, without
interest. The Supplemental Agreements automatically terminated on the date that ACM Shanghai formally submitted the STAR Listing registration application document to
the Shanghai Stock Exchange.

In the quarter ended December 31, 2019, ACM Shanghai issued to certain private placement investors (the “Second Tranche Investors”) equity in the form of redeemable
non-controlling interests. Following the issuance of shares to the Second Tranche Investors, 91.7% of the outstanding shares of ACM Shanghai was owned by ACM, 3.8%
was owned by the First Tranche Investors, and 4.5% was owned by the Second Tranche Investors.

In addition to the capital increase agreement with the Second Tranche Investors, ACM Shanghai entered into a supplemental agreement (a “Second Tranche Supplemental
Agreement”)  with  each  of  the  Second  Tranche  Investors.  Under  each  Second  Tranche  Supplemental  Agreement,  if  ACM  Shanghai  did  not  officially  submit  application
documents for the STAR Listing to the Shanghai Stock Exchange by December 31, 2022, each Second Tranche Investor would have the right to require that ACM Shanghai
repurchase,  and  ACM  Shanghai  will  have  the  right  to  require  that  each  Second  Tranche  Investor  sell  to  ACM  Shanghai,  such  Second  Tranche  Investor’s  ACM  Shanghai
shares  for  a  price  equal  to  the  initial  purchase  price  paid  by  the  Second  Tranche  Investor,  without  interest.  The  Second  Tranche  Supplemental  Agreements  automatically
terminated  on  the  date  that  ACM  Shanghai  formally  submitted  the  STAR  Listing  registration  application  document  to  the  Shanghai  Stock  Exchange.  Because  the  First
Tranche Investors and the Second Tranche Investors had the right to require ACM Shanghai to repurchase their ownership interests in ACM Shanghai at a fixed purchase
price, those ownership interests were classified as redeemable non-controlling interests under ASC 480 Distinguishing Liabilities From Equity. The Company had elected to
apply the entire adjustment method (income classification) for subsequent measurement in accordance with ASC 480-10-S99.

Upon the submission of application documents by ACM Shanghai for the STAR Listing and the STAR IPO to the Shanghai Stock Exchange during the second quarter of
2020, the redemption feature of the private placement funding (note 1) terminated and the aggregate proceeds of the funding therefore were reclassified from redeemable non-
controlling  interests  to  non-controlling  interests.  Further,  upon  the  termination  of  such  redemption  feature,  the  Company  released  the  aggregate  proceeds  of  the  private
placement funding from reserved cash, which the Company previously had voluntarily imposed in light of a potential redemption.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The components of the change in the redeemable non-controlling interests for the year ended December 31, 2020 and 2019 are presented in the following table:

Balance at January 1, 2019
Increase in redeemable non-controlling interests due to issuance of common stock

Tranche 1:
Tranche 2:

Net income attributable to redeemable non-controlling interests
Effect of foreign currency translation loss attributable to redeemable non-controlling interests
Balance at December 31, 2019

Net income attributable to redeemable non-controlling interests
Effect of foreign currency translation gain attributable to redeemable non-controlling interests
Reclassification of redeemable non-controlling interest

Balance at December 31, 2020

  $

- 

27,264 
32,415 
564 
(81)
60,162 
643 
(847)
(59,958)
- 

  $

  $

NOTE 20 – STOCK-BASED COMPENSATION

In January 2020 ACM Shanghai adopted a 2019 Stock Option Incentive Plan (the “Subsidiary Stock Option Plan”) that provides for, among other incentives, the granting to
officers, directors, employees of options to purchase shares of ACM Shanghai’s common stock. The fair value of the stock options granted is estimated at the date of grant
based on the Black-Scholes option pricing model using assumptions generally consistent with those used for ACM’s stock options. Because ACM Shanghai shares are not
currently publicly traded, the expected volatility is estimated with reference to the average historical volatility of a group of publicly traded companies that are believed to
have similar characteristics to ACM Shanghai.

ACM’s stock-based compensation consists of employee and non-employee awards issued under the 1998 Stock Option Plan and the 2016 Omnibus Incentive Plan and as
standalone  options.  ACM  granted  stock  options  to  employees  under  the  2016  Omnibus  Incentive  Plan  during  the  twelve  months  ended  December  31,  2020.  The  vesting
condition may consist of service period determined by the Board of Directors for s grant or certain performance conditions determined by the Board of Directors for a grant.
The fair value of the stock options granted with service period based condition is estimated at the date of grant using the Black-Scholes option pricing model. The fair value of
the stock options granted with market based condition is estimated at the date of grant using the Monte Carlo simulation model.

The following table summarizes the components of stock-based compensation expense included in the consolidated statements of operations:

Stock-Based Compensation Expense:
Cost of revenue
Sales and marketing expense
Research and development expense
General and administrative expense

Year Ended December 31,
2019

2020

2018

  $

  $

175    $
1,199     
763     
3,491     
5,628    $

250    $
328     
1,093     
1,901     
3,572    $

71 
120 
255 
2,917 
3,363 

100

   
  
   
   
   
   
   
   
   
 
 
 
 
 
   
   
 
   
     
     
 
   
   
   
 
 
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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

Stock-based compensation expense by type:
Employee stock purchase plan
Non-employee stock purchase plan
Subsidiary option grants

Employee Awards

Year Ended December 31,
2019

2020

2018

  $

  $

4,900    $
396     
332     
5,628    $

2,265    $
1,307     
-     
3,572    $

712 
2,651 
- 
3,363 

The following table summarizes the Company’s employee share option activities during the years ended December 31, 2018, 2019 and 2020:

Outstanding at December 31, 2017
Granted
Exercised
Expired
Forfeited
Outstanding at December 31, 2018
Granted
Exercised
Expired
Forfeited/cancelled
Outstanding at December 31, 2019
Granted
Exercised
Forfeited/cancelled
Outstanding at December 31, 2020
Vested and exercisable at December 31, 2020

Number of
Option Share

Weighted
Average Grant
Date Fair Value

Weighted
Average
Exercise
Price

2,045,616  $
745,700 
(151,650) 
(4,622) 
(131,639) 
2,503,405 
656,000 
(106,768) 
(2,757) 
(55,817) 
2,994,063 
786,399 
(547,189) 
(41,862) 
3,191,411  $
1,959,387 

0.66  $
1.52 
0.53 
0.55 
0.97 
0.91 
6.29 
0.60 
3.34 
2.38 
2.59 
12.17 
1.34 
4.80 
5.13  $

Weighted Average
Remaining
Contractual Term

7.57 years

7.30 years

7.05 years

7.13 years

2.46 
8.12 
2.06 
3.00 
3.87 
4.09 
16.21 
2.09 
8.16 
6.23 
6.77 
29.17 
3.78 
12.65 
12.73 

As of December 31, 2020 and 2019, $8,733  and $4,712, respectively, of total unrecognized employee stock-based compensation expense, net of estimated forfeitures, related
to stock-based awards for ACM were expected to be recognized over a weighted-average period of 1.89 years and 1.47 years, respectively. Total recognized compensation
cost may be adjusted for future changes in estimated forfeitures.

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Non-employee Awards

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The following table summarizes the Company’s non-employee share option activities during the years ended December 31, 2018, 2019 and 2020:

Outstanding at December 31, 2017
Granted
Exercised
Expired
Forfeited
Outstanding at December 31, 2018
Granted
Exercised
Expired
Forfeited/cancelled
Outstanding at December 31, 2019
Granted
Exercised
Expired
Forfeited/cancelled
Outstanding at December 31, 2020
Vested and exercisable at December 31, 2020

Number of
Option Shares

Weighted
Average Grant
Date Fair Value

Weighted
Average
Exercise
Price

1,326,676  $

- 
(114,302) 
- 
- 
1,212,374 
- 
(88,529) 
- 
(22,232) 
1,101,613 
20,000 
(285,315) 
- 
(260) 
836,038  $
806,677 

0.78  $
- 
0.43 
- 
- 
0.78 
- 
0.45 
- 
0.55 
0.82 
10.29 
0.88 
- 
0.30 
1.02  $

Weighted Average
Remaining
Contractual Term

7.54 years

6.66 years

5.85 years

4.92 years

$2.52 
- 
1.92 
- 
- 
2.57 
- 
1.06 
- 
3.00 
2.69 
25.60 
3.17 
- 
0.75 
3.07 

As of December 31, 2020 and 2019, $195 and $406, respectively, of total unrecognized non-employee stock-based compensation expense, net of estimated forfeitures, related
to stock-based awards were expected to be recognized over a weighted-average period of 0.09 years and 0.23 years, respectively. Total recognized compensation cost may be
adjusted for future changes in estimated forfeitures.

The fair value of options granted to employee and non-employee with a service period based condition is estimated on the grant date using the Black-Scholes valuation model
with the following assumptions:

Fair value of common share(1)
Expected term in years(2)
Volatility(3)
Risk-free interest rate(4)
Expected dividend(5)

Year Ended December 31,
2019

2018

2020

  $

  $

25.60 
6.25 

18.45 
1.58-3.60 

  $

10.88 
2.58-5.36 

42.17%    40.24%-45.48%    40.24%-45.48%
2.39%-2.94%
0.00%

2.39%-2.94%   
0.00%   

0.78%   
0.00%   

Fair value of Class A common stock value was the closing market price of the Class A common stock on the grant date.
Expected term of share options is based on the average of the vesting period and the contractual term for each grant according to Staff Accounting Bulletin 110.

(1)
(2)
(3) Volatility is calculated based on the historical volatility of the stock of companies comparable to ACM in the period equal to the expected term of each grant.
(4) Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of

grant.
Expected dividend is assumed to be 0% as ACM has no history or expectation of paying a dividend on its common stock.

(5)

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The  fair  value  of  option  granted  to  employee  with  market  based  condition  is  estimated  on  the  grant  date  using  the  Monte  Carlo  simulation  model  with  the  following
assumptions:

Fair value of common share(1)
Expected term in years(2)
Volatility(3)
Risk-free interest rate(4)
Expected dividend(5)

Year Ended
December 31, 
2020

  $

22.07 
9.20 - 9.80 

45.10%
2.68%
0%

Fair value of Class A common stock value was the closing market price of the Class A common stock on the grant date.
Expected term of share options is based on the average of the vesting period and the contractual term for each grant according to Staff Accounting Bulletin 110.

(1)
(2)
(3) Volatility is calculated based on the historical volatility of the stock of companies comparable to ACM in the period equal to the expected term of each grant.
(4) Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the share options in effect at the time of

grant.
Expected dividend is assumed to be 0%, as ACM has no history or expectation of paying a dividend on its common stock.

(5)

ACM Shanghai Option Grants

The following table summarizes the ACM Shanghai employee stock option activities during the year ended December 31, 2020:

Number of
Option Shares in
ACM Shanghai    

Weighted
Average Grant
Date Fair Value   

Weighted
Average
Exercise
Price

Outstanding at December 31, 2019
Granted
Exercised
Expired
Forfeited/cancelled
Outstanding at December 31, 2020
Vested and exercisable at December 31, 2020

-    $
5,869,808     
-     
-     
(446,154)    
5,423,654    $
-     

-    $
0.23     
-     
-     
0.23     
0.23    $

-     
1.89     
-     
-     
1.89     
1.89   

During  the  year  ended  December  31,  2020,  the  Company  recognized  stock-based  compensation  expense  of  $332, related to stock option grants of ACM Shanghai. As of
December 31, 2020, $822 of total unrecognized non-employee stock-based compensation expense, net of estimated forfeitures, related to ACM Shanghai stock-based awards
were expected to be recognized over a weighted-average period of 2.5 years. Total recognized compensation cost may be adjusted for future changes in estimated forfeitures.

103

Weighted Average
Remaining
Contractual Term 
- 

3.50 years 

 
 
 
 
   
   
   
   
 
   
   
   
  
   
  
   
  
   
  
   
   
      
      
  
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NOTE 21 – INCOME TAXES

ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The following represent components of the income tax benefit (expense) for the years ended December 31, 2020, 2019 and 2018:

Current:

U.S. federal
U.S. state
Foreign
Total current tax expense

Deferred:

U.S. federal
U.S. state
Foreign

Total deferred tax benefit

Total income tax benefit (expense)

Year Ended December 31,
2019

2020

2018

  $

  $

(61)   $
(2)  
(2,014)  
(2,077)  

7,325 
- 

(2,866)  
4,459 
2,382 

  $

-    $
-     
(3,176)    
(3,176)    

3,728     
-     
(34)    
3,694     
518    $

- 
- 
(1,149)
(1,149)

- 
- 
343 
343 
(806)

Tax effects of temporary differences that give rise to significant portions of the Company’s deferred tax assets at December 31, 2020 and 2019 are presented below:

Deferred tax assets:

Net operating loss carry forwards (offshore)
Net operating loss carry forwards (U.S.) and credit
Deferred revenue (offshore)
Accruals (U.S.)
Reserves and other (offshore)
Stock-based compensation (U.S.)
Property and equipment (U.S.)
Lease liability

Total gross deferred tax assets
Less: valuation allowance
Total deferred tax assets
Deferred tax liabilities:

Fixed assets
Deferred revenue (offshore)
Unrealized gain on trading securities

Total deferred tax liabilities
Translation difference
Deferred tax assets, net

Year Ended December 31,
2019
2020

  $

  $

323    $
9,981     
556     
22     
884     
1,599     
164     
659     
14,188     
(848)    
13,340     

(697)    
(967)    
(1,886)    
(3,550)    
-     
9,790    $

216 
3,218 
1,181 
15 
426 
1,168 
3 
- 
6,227 
(896)
5,331 

- 
- 
- 
- 
- 
5,331 

The Company considers all available evidence to determine whether it is more likely than not that some portion or all of the deferred tax assets will be realized. The ultimate
realization  of  deferred  tax  assets  is  dependent  upon  the  generation  of  future  taxable  income  during  the  periods  in  which  those  temporary  differences  become  realizable.
Management considers the scheduled reversal of deferred tax liabilities (including the impact of available carryback and carry-forward periods), and projected taxable income
in assessing the realizability of deferred tax assets. In making such judgments, significant weight is given to evidence that can be objectively verified. Based on all available
evidence, a partial valuation allowance has been established against some net deferred tax assets as of December 31, 2020 and 2019, based on estimates of recoverability.
While the Company has optimistic plans for its business strategy, it determined that such a valuation allowance was necessary given its historical losses and the uncertainty
with respect to its ability to generate sufficient profits from its business model from all tax jurisdictions. In order to fully realize the U.S. deferred tax assets, the Company
must generate sufficient taxable income in future periods before the expiration of the deferred tax assets governed by the tax code.

The  valuation  allowance  in  the  U.S.  decreased  by  $151  and  $4,465  for  the  years  ended  December  31,  2020  and  2019,  respectively.  The  valuation  allowance  in  the  PRC
increased by $102 and $207 for the years ended December 31, 2020 and 2019, respectively.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

As of December 31, 2020 and 2019, the Company had net operating loss carry-forwards of, respectively, $45,031 and $12,158 for U.S federal purposes, $545 and $634 for
U.S. state purposes and $1,294 and $66 for PRC income tax purposes. Such losses begin expiring in 2022, 2032 and 2021 for U.S. federal, U.S. state and PRC income tax
purposes, respectively.

As of December 31, 2020 and 2019, the Company had research credit carry-forwards of, respectively, $359 and $479 for U.S. federal purposes and $377 and $377 for U.S.
state purposes. Such credits begin expiring in 2021 for U.S. federal carry-forwards. There is no expiration date for U.S. state carry-forwards.

Under  provisions  of  the  U.S.  Internal  Revenue  Code  (the  “IRC”),  a  limitation  applies  to  the  use  of  the  U.S.  net  operating  loss  and  credit  carry-forwards  that  would  be
applicable  if  ACM  experiences  an  “ownership  change,”  as  defined  in  IRC  Section  382.  ACM  conducted  an  analysis  of  its  stock  ownership  under  IRC  Section  382  and
$12,118 of the net operating loss carryforwards are subject to annual limitation as a result of the ownership change in 2017. The net operating loss carryforwards are not
expected to expire before utilization.

The Company’s effective tax rate differs from statutory rates of 21% for U.S. federal income tax purposes and 15% to 25% for PRC income tax purpose due to the effects of
the  valuation  allowance  and  certain  permanent  differences  as  they  pertain  to  book-tax  differences  in  employee  stock-based  compensation  and  the  value  of  client  shares
received for services. Pursuant to the Corporate Income Tax Law of the PRC, all of the Company’s PRC subsidiaries are liable to PRC Corporate Income Taxes at a rate of
25%,  except  for  ACM  Shanghai.  According  to  Guoshuihan  2009  No.  203,  if  an  entity  is  certified  as  an  “advanced  and  new  technology  enterprise,”  it  is  entitled  to  a
preferential income tax rate of 15%. ACM Shanghai obtained the certificate of “advanced and new technology enterprise” in each of 2012, 2016 and 2018 with an effective
period of three years, and the provision for PRC corporate income tax for ACM Shanghai is calculated by applying the income tax rate of 15% for the years ended December
31, 2020, 2019 and 2018.

Income tax expense for the years ended December 31, 2020, 2019 and 2018 differed from the amounts computed by applying the statutory U.S. federal income tax rate of
21% to pretax income as a result of the following:

Effective tax rate reconciliation:

Income tax provision at statutory rate
State taxes, net of Federal benefit
Foreign rate differential
Other permanent difference
Effect of tax reform
Change in valuation allowance
Total income tax expense (benefit)

2020

Year Ended December 31,
2019

2018

21.00%    

21.00%    

21.00%

(13.87)
(19.23)

(12.26)
8.71 

(0.25)

(12.35)%   

(20.19)

(2.74)%   

(20.88)
15.59 

(4.78)
10.93%

Tax positions are evaluated in a two-step process. The Company first determines whether it is more likely than not that a tax position will be sustained upon examination. If a
tax  position  meets  the  more-likely-than-not  recognition  threshold  it  is  then  measured  to  determine  the  amount  of  benefit  to  recognize  in  the  financial  statements.  The  tax
position is measured as the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement. The aggregate changes in the balance of gross
unrecognized tax benefits, which excludes interest and penalties, for the years ended December 31, 2020 and 2019, were as follows:

Beginning balance

Increase of unrecognized tax benefits taken in prior years
Increase of unrecognized tax benefits related to current year
Increase of unrecognized tax benefits related to settlements
Reductions to unrecognized tax benefits related to lapsing statute of limitations

Ending balance

105

Year Ended December 31,
2019
2020

  $

  $

44    $
116     
410     
-     
-     
570    $

44 
- 
- 
- 
- 
44 

 
 
 
 
 
 
 
 
 
 
   
 
   
 
   
 
   
 
   
   
 
   
 
   
 
   
   
   
   
   
   
   
 
   
 
   
 
   
   
   
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
 
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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The  Company  is  subject  to  taxation  in  the  United  States,  California  and  foreign  jurisdictions.  The  federal,  state  and  foreign  income  tax  returns  are  under  the  statute  of
limitations subject to tax examinations for the tax years ended December 31, 1999 through December 31, 2020. To the extent the Company has tax attribute carry-forwards,
the tax years in which the attribute was generated may still be adjusted upon examination by the U.S. Internal Revenue Service or by state or foreign tax authorities to the
extent utilized in a future period.

The Company had $570 and $44 of unrecognized tax benefits as of December 31, 2020 and 2019, respectively.

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense. As of December 31, 2020 and 2019, respectively, the Company had
$0 and $44 of accrued penalties related to uncertain tax positions, all of which was recognized in the Company’s consolidated statements of operations and comprehensive
income for the year then ended. The amount of the unrecognized tax benefit that, if recognized, would impact the effective tax rate was $422 as of December 31, 2020. There
were no ongoing examinations by taxing authorities as of December 31, 2020 or 2019.

The Company intends to indefinitely reinvest the PRC earnings outside of the United States as of December 31, 2020 and 2019. Thus, deferred taxes are not provided in the
United States for unremitted earnings in the PRC.

NOTE 22 – SEGMENT INFORMATION

The  Company  is  engaged  in  the  developing,  manufacture  and  sale  of  single-wafer  wet  cleaning  equipment,  which  have  been  organized  as  one  reporting  segment  as  the
equipment has substantially similar nature and economic characteristics. The Company’s principal operating decision maker, ACM’s Chief Executive Officer, receives and
reviews the results of the operations for all major type of equipment as a whole when making decisions about allocating resources and assessing performance of the Company.
In accordance with FASB ASC 280-10, the Company is not required to report segment information.

NOTE 23 – COMMITMENTS AND CONTINGENCIES

The  Company  leases  offices  under  non-cancelable  operating  lease  agreements.  See  note  8  for  future  minimum  lease  payments  under  non-cancelable  operating  lease
agreements with initial terms of one year or more.

As of December 31, 2020, the Company had $1,173 of open capital commitments.

In  the  normal  course  of  business,  the  Company  is  subject  to  contingencies,  including  legal  proceedings  and  environmental  claims  arising  out  of  the  normal  course  of
businesses that relate to a wide range of matters, including among others, contracts breach liability. The Company records accruals for such contingencies based upon the
assessment  of  the  probability  of  occurrence  and,  where  determinable,  an  estimate  of  the  liability.  Management  may  consider  many  factors  in  making  these  assessments
including  past  history,  scientific  evidence  and  the  specifics  of  each  matter.    Some  of  these  contingencies  involve  claims  that  are  subject  to  substantial  uncertainties  and
unascertainable damages.

The Company’s management has evaluated all such proceedings and claims that existed as of December 31, 2020 and 2019. In the opinion of management, no provision for
liability nor disclosure was required as of December 31, 2020 related to any claim against the Company because: (a) there is not a reasonable possibility that a loss exceeding
amounts already recognized (if any) may be incurred with respect to such claim; (b) a reasonably possible loss or range of loss cannot be estimated; or (c) such estimate is
immaterial.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

As of December 31, 2020, the Company had one outstanding legal proceeding regarding securities class action. On December 21, 2020, a putative class action lawsuit against
ACM and three of its current executive officers was filed in the U.S. District Court for the Northern District of California under the caption Kain v. ACM Research, Inc., et al.,
No. 3:20-cv-09241. The complaint asserts claims under Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder, and seeks
monetary damages in an unspecified amount as well as costs and expenses incurred in the litigation.  The court has not yet appointed a lead plaintiff. ACM’s management
believes the claims are without merit and intend to vigorously defend this litigation. The Company is currently unable to predict the outcome of this lawsuit and therefore
cannot determine the likelihood of loss or estimate a range of possible loss.

NOTE 24 – RESTRICTED NET ASSETS

In accordance with the PRC’s Foreign Enterprise Law, ACM Shanghai Shengwei Research (Shanghai), Inc., and ACM Wuxi are required to make contributions to a statutory
surplus reserve (note 2).

As a result of PRC laws and regulations that require annual appropriations of 10% of net after-tax profits to be set aside prior to payment of dividends as a general reserve
fund or statutory surplus fund, ACM Shanghai is restricted in its ability to transfer a portion of its net assets to ACM (including any assets received as distributions from
Shengwei Research (Shanghai), Inc. and ACM Wuxi). Amounts restricted included paid-in capital and statutory reserve funds, as determined pursuant to PRC accounting
standards and regulations, were $119,377, $113,168 and $32,076 as of December 31, 2020, 2019 and 2018, respectively.

NOTE 25 – PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION

The Company performed a test on the restricted net assets of consolidated subsidiaries in accordance with Rule 4-08(e)(3) of Regulation S-X of the SEC and concluded that it
was applicable for the Company to disclose the financial information for ACM only. Certain information and footnote disclosures generally included in financial statements
prepared in accordance with GAAP have been condensed or omitted. The footnote disclosure contains supplemental information relating to the operations of ACM separately.

ACM’s subsidiaries did not pay any dividends to ACM during the periods presented.

ACM did not have significant capital or other commitments, long-term obligations, or guarantees as of December 31, 2020 or 2019.

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ACM RESEARCH, INC.
Notes to Consolidated Financial Statements
(in thousands, except share and per share data)

The following represents condensed unconsolidated financial information of ACM only as of December 31, 2020 and 2019, and for the years ended December 31, 2020, 2019
and 2018:

CONDENSED BALANCE SHEET

Assets

Current assets:

Cash and cash equivalents
Inventory
Due from intercompany
Other receivable
Prepaid expenses
Total current assets
Deferred tax assets
Investment in unconsolidated subsidiaries

Total assets

Liabilities and Stockholders’ Equity

Accounts payable
Other payable
Income taxes payable
FIN-48 payable
Deferred tax liability
Total liabilities
Total stockholders’ equity
Total liabilities and stockholders’ equity

CONDENSED STATEMENT OF OPERATIONS

Revenue
Cost of revenue
Gross profit
Operating expenses:

Sales and marketing expenses
General and administrative expenses
Research and development expenses

Loss from operations
Equity in earnings of unconsolidated subsidiaries
Change in fair value of financial liability
Interest income, net
Interest expense, net
Other income, net

Income before income taxes
Income tax expense

Net income

CONDENSED STATEMENT OF CASH FLOWS

Net cash used in operating activities
Net cash provided by investing activities
Net cash provided by financing activities
Net increase in cash and cash equivalents
Cash and cash equivalents, beginning of year
Effect of exchange rate changes on cash and cash equivalents
Cash and cash equivalents, end of year

108

December 31,

2020

2019

  $

  $

30,188    $
-     
-     
5     
359     
30,552     
11,076     
102,455     
144,083     

1,278     
255     
31     
83     
1,286     
2,933     
141,150     
144,083    $

27,733 
444 
4,542 
5 
- 
32,724 
- 
68,527 
101,251 

1,138 
589 
3,129 
- 
- 
4,856 
96,395 
101,251 

Year Ended December 31,
2019

2020

2018

  $

1,776    $
(1,707)    
69     

10,683    $
(10,036)    
647     

25,506 
(23,927)
1,579 

(1,361)    
(5,010)    
-     
(6,302)    
36,273     
(11,964)    
90     
-     
683     
18,780     
-     
18,780    $

(490)    
(3,639)    
(476)    
(3,958)    
22,510     
-     
231     
(67)    
178     
18,894     
-     
18,894    $

(301)
(5,083)
(255)
(4,060)
10,360 
- 
166 
- 
108 
6,574 
- 
6,574 

Year Ended December 31,
2019

2020

2018

(290)   $
-     
2,745     
2,455     
27,733     
-     
30,188    $

(7,957)   $
-     
23,347     
15,390     
13,161     
(818)    
27,733    $

(1,189)
946 
3,510 
3,267 
10,874 
(980)
13,161 

  $

  $

  $

 
 
 
 
   
 
   
 
   
     
 
   
   
   
   
   
   
   
   
 
   
      
  
   
      
  
   
   
   
   
   
   
   
 
 
 
 
   
   
 
 
   
 
   
   
   
      
      
  
   
   
   
   
   
   
   
   
   
   
   
 
 
 
 
   
   
 
 
   
 
   
   
   
   
   
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Item 9A.          Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our  management,  with  the  participation  of  our  Chief  Executive  Officer  and  Chief  Financial  Officer,  evaluated  the  effectiveness  of  our  company’s  disclosure  controls  and
procedures  pursuant  to  Rule  13a-15  under  the  Securities  Exchange  Act  of  1934,  or  the  Exchange  Act,  as  of  December  31,  2020.  The  evaluation  included  certain  internal
control  areas  in  which  we  have  made  and  are  continuing  to  make  changes  to  improve  and  enhance  controls.  In  designing  and  evaluating  the  disclosure  controls  and
procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the
desired  control  objectives.  In  addition,  the  design  of  disclosure  controls  and  procedures  must  reflect  the  fact  that  there  are  resource  constraints  and  that  management  is
required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their costs. The effectiveness of the disclosure controls and procedures
is also necessarily limited by the staff and other resources available to management and the geographic diversity of our company’s operations. As a result of the COVID-19
pandemic, in 2020 we have faced additional challenges in operating and monitoring our disclosure controls and procedures as a result of employees working remotely and
management travel being limited. In addition, we face potential heightened cybersecurity risks as our level of dependence on our IT networks and related systems increases,
stemming from employees working remotely, and the number of malware campaigns and phishing attacks preying on the uncertainties surrounding the COVID‑19 pandemic
increases.

Based  on  that  evaluation,  our  Chief  Executive  Officer  and  Chief  Financial  Officer  concluded  that,  as  of  December  31,  2020,  our  company’s  disclosure  controls  and
procedures were effective to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded,
processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms, and that such information is accumulated and
communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Management’s Report on Internal Control Over Financial Reporting

Management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange
Act. Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with general accepted accounting principles. The company’s 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 the assets of our company;
provide  reasonable  assurance  that  transactions  are  recorded  as  necessary  to  permit  preparation  of  financial  statements  in  accordance  with  generally  accepted
accounting principles, and that receipts and expenditures of our company are being made only in accordance with authorizations of management and directors of
our company; and
provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our company’s assets that could have a
material effect on the financial statements.

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

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, assessed the effectiveness of our internal control over financial reporting
as of December 31, 2020. In making this assessment, our management used the criteria set forth in the Internal Control-Integrated Framework (2013) issued by the Committee
of Sponsoring Organizations of the Treadway Commission. Based on its assessment, management concluded that our internal control over financial reporting was effective as
of December 31, 2020.

BDO China Shu Lun Pan Certified Public Accountants LLP, an independent registered public accounting firm, has issued an attestation report on our internal control over
financial reporting, which is included herein.

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Changes in Internal Control over Financial Reporting and Remediation Efforts

No changes were identified to our internal control over financial reporting during the three months ended December 31, 2020 that have materially affected, or are 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 to enhance their effectiveness and ensure that our systems evolve with our business.

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Report of Independent Registered Public Accounting Firm

Shareholders and Board of Directors
ACM Research, Inc.
Fremont, California

Opinion on Internal Control over Financial Reporting

We have audited ACM Research, Inc. and subsidiaries’ (the “Company’s”) internal control over financial reporting as of December 31, 2020, based on criteria established in
Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (the “COSO criteria”). In our opinion,
the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2020, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated balance sheets of
the Company as of December 31, 2020 and 2019, the related consolidated statements of operations and comprehensive income, changes in stockholders’ equity, and cash
flows for each of the three years in the period ended December 31, 2020, and the related notes and our report dated March 1, 2021 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control
over financial reporting, included in the accompanying “Item 9A, Management’s Report on Internal Control over Financial Reporting”. Our responsibility is to express an
opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be
independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission
and the PCAOB.

We conducted our audit of internal control over financial reporting in accordance with the standards of the PCAOB. Those standards require that we plan and perform the
audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an
understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness
of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our
audit provides a reasonable basis for our opinion.

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Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process 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. A company’s internal control over financial reporting includes those
policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of
the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted
accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company;
and  (3)  provide  reasonable  assurance  regarding  prevention  or  timely  detection  of  unauthorized  acquisition,  use,  or  disposition  of  the  company’s  assets  that  could  have  a
material effect on the financial statements.

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

BDO China Shu Lun Pan Certified Public Accountants LLP

Shenzhen, The People’s Republic of China
March 1, 2021

112

Table of Contents

Item 10.

Directors, Executive Officers and Corporate Governance

PART III

Information responsive to this item is incorporated herein by reference to our definitive proxy statement with respect to our 2020 Annual Meeting of Stockholders to be filed
with the SEC within 120 days after the end of the fiscal year covered by this report.

Item 11.

Executive Compensation

Information responsive to this item is incorporated herein by reference to our definitive proxy statement with respect to our 2020 Annual Meeting of Stockholders to be filed
with the SEC within 120 days after the end of the fiscal year covered by this report.

Item 12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

Information responsive to this item is incorporated herein by reference to our definitive proxy statement with respect to our 2020 Annual Meeting of Stockholders to be filed
with the SEC within 120 days after the end of the fiscal year covered by this report.

Item 13.

Certain Relationships and Related Transactions, and Director Independence

Information responsive to this item is incorporated herein by reference to our definitive proxy statement with respect to our 2020 Annual Meeting of Stockholders to be filed
with the SEC within 120 days after the end of the fiscal year covered by this report.

Item 14.

Principal Accounting Fees and Services

Information responsive to this item is incorporated herein by reference to our definitive proxy statement with respect to our 2020 Annual Meeting of Stockholders to be filed
with the SEC within 120 days after the end of the fiscal year covered by this report.

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PART IV

Item 15.

Exhibits and Financial Statement Schedules

(a)          See “Item 8. Financial Statements and Supplementary Data – Index to Consolidated Financial Statements” of Part II above and “Exhibit Index” below.

(b)

Exhibits.

Exhibit
No.

3.01
3.02
4.01

4.02
4.03

4.04‡
4.05
10.01(a)
10.01(b)
10.01(c)
10.02
10.03
10.04

10.05

10.06

10.07

10.08
10.09
10.10
10.11

10.12
10.13

10.14

Description

  Restated Certificate of Incorporation of ACM Research, Inc.
  Restated Bylaws of ACM Research, Inc.
  Senior Secured Promissory Note dated March 30, 2018 issued by Shengxin (Shanghai) Management Consulting Limited Partnership to ACM Research

(Shanghai), Inc.
Intercompany Promissory Note dated March 30, 2018 issued by ACM Research (Shanghai), Inc. to ACM Research, Inc.

  Warrant Exercise Agreement dated March 30, 2018 by and among ACM Research, Inc., ACM Research (Shanghai), Inc., and Shengxin (Shanghai)

Management Consulting Limited Partnership

  Warrant to Purchase Class A Common Stock issued to Shengxin (Shanghai) Management Consulting Limited Partnership dated July 29, 2020
  Description of ACM Research, Inc.’s Securities
  Lease dated March 22, 2017 between ACM Research, Inc. and D&J Construction, Inc.
  Lease Amendment dated February 28, 2018 between ACM Research, Inc. and D&J Construction, Inc.
  Lease Amendment dated February 4, 2019 between ACM Research, Inc. and D&J Construction, Inc.
  Lease Agreement dated April 26, 2018 between ACM Research (Shanghai), Inc. and Shanghai Zhangjiang Group Co., Ltd.
  Lease Agreement dated January 18, 2018 between ACM Research (Shanghai), Inc. and Shanghai Shengyu Culture Development Co., Ltd.
  Securities  Purchase  Agreement  dated  March  14,  2017  by  and  among  ACM  Research,  Inc.,  Shengxin  (Shanghai)  Management  Consulting  Limited

Partnership and ACM Research (Shanghai), Inc.

  Securities Purchase Agreement dated March 23, 2017 between ACM Research, Inc. and Shanghai Science and Technology Venture Capital Co., Ltd.,

as amended

  Securities  Purchase  Agreement  dated  August  31,  2017  by  and  among  ACM  Research,  Inc.,  Shanghai  Pudong  High-Tech  Investment  Co.,  Ltd.  and

Pudong Science and Technology (Cayman) Co., Ltd.

  Securities  Purchase  Agreement  dated  August  31,  2017  by  and  among  ACM  Research,  Inc.,  Shanghai  Zhangjiang  Science  &  Technology  Venture

Capital Co., Ltd. and Zhangjiang AJ Company Limited

  Ordinary Share Purchase Agreement dated September 6, 2017 by and among ACM Research, Inc., Ninebell Co., Ltd. and Moon-Soo Choi
  Class A Common Stock Purchase Agreement dated September 6, 2017 by and among ACM Research, Inc., Ninebell Co., Ltd. and Moon-Soo Choi
  Form of Second Amended and Restated Registration Rights Agreement to be entered into between ACM Research, Inc. and certain of its stockholders
  Stock Purchase Agreement, dated October 11, 2017, by and among ACM Research, Inc., Xunxin (Shanghai) Capital Co., Limited, Xinxin (Hongkong)

Capital Co., Limited and David H. Wang

  Stock Purchase Agreement, dated October 16, 2017, by and between ACM Research, Inc. and Victorious Way Limited
  Nomination and Voting Agreement, dated October 11, 2017, by and among Xinxin (Hongkong) Capital Co., Limited, ACM Research, Inc., David H.

Wang, and the individuals named therein

  Voting  Agreement,  dated  March  23,  2017,  by  and  among  Shanghai  Technology  Venture  Capital  Co.,  Ltd.  (also  known  as  Shanghai  Science  and

Technology Venture Capital Co., Ltd.) and ACM Research, Inc.

10.15
10.15(a)
10.16

  Form of Capital Increase Agreement between ACM Research, Inc. and certain investors
  Schedule identifying agreements substantially identical to the form of Capital Increase Agreement filed as Exhibit 10.15 hereto
  Form of Agreement between ACM Research, Inc. and certain Investors

114

 
 
 
 
 
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10.16(a)
10.17

10.18

10.19

10.20+
10.20(a)+
10.20(b)+
10.20(c)+
10.21+
10.22+
10.22(a)+
10.22(b)+
10.23
10.24+
10.25+‡
10.26

10.27(a)

10.27(b)

10.28‡†

10.29†
10.30†

10.31†

10.32†

10.33‡†

10.34†
10.35‡†

10.36†
10.37†

  Schedule identifying agreements substantially identical to the form of Agreement filed as Exhibit 10.16 hereto
  Equity  Purchase  Agreement  dated  August  4,  2019  between  ACM  Research,  Inc.  and  certain  of  its  directors  and  executive  officers  and  an  officer

affiliate

  Underwriting Agreement dated August 14, 2019 between ACM Research, Inc. and Stifel, Nicolaus & Company, Incorporated as Representative of the

several Underwriters

  Partnership Agreement of Hefei Shixi Chanheng Integrated Circuit Industry Venture Capital Fund Partnership (LP) dated September 5, 2019 by and
among Infotech National Emerging Industry Venture Investment Guidance Fund (LP), Hefei Guozheng Asset Management Co, Ltd., Hefei Economic
and  Technological  Development  Zone  Industrial  Investment  Guidance  Fund  Co.,  Ltd.,  ACM  Research  (Shanghai),  Inc.,  Hefei  Tongyi  Equity
Investment Partnership (LP), Shenzen Waitan Technology Development Co., Ltd., and Beijing Shixi Qingliu Investment Co., Ltd.

  2016 Omnibus Incentive Plan of ACM Research, Inc.
  Form of Incentive Stock Option Grant Notice and Agreement under 2016 Omnibus Incentive Plan
  Form of Non-qualified Stock Option Grant Notice and Agreement under 2016 Omnibus Incentive Plan
  Form of Restricted Stock Unit Grant Notice and Agreement under 2016 Omnibus Incentive Plan
  Form of Nonstatutory Stock Option Agreement of ACM Research, Inc.
  1998 Stock Option Plan of ACM Research, Inc.
  Form of Incentive Stock Option Agreement under 1998 Stock Option Plan
  Form of Non-statutory Stock Option Agreement under 1998 Stock Option Plan
  Form of Indemnification Agreement entered into between ACM Research, Inc. and certain of its directors and officers
  Letter agreement dated June 12, 2019 between ACM Research, Inc. and Mark McKechnie
  Employment Agreement dated January 8, 2018 between ACM Research (Shanghai), Inc and Lisa Feng
  Note  Assignment  and  Cancellation  Agreement  dated  April  30,  2020  by  and  among  ACM  Research,  Inc.,  ACM  Research  (Shanghai),  Inc.  and

Shengxin (Shanghai) Management Consulting Limited Partnership

  Share  Transfer  and  Note  Cancellation  Agreement  dated  April  30,  2020  between  ACM  Research,  Inc.  and  Shengxin  (Shanghai)  Management

Consulting Limited Partnership

  Amendment No. 1 to Share Transfer and Note Cancellation Agreement dated July 29, 2020 between ACM Research, Inc. and Shengxin (Shanghai)

Management Consulting Limited Partnership

  Grant Contract for State-owned Construction Land Use Right in Shanghai City (Category of R&D Headquarters and Industrial Projects) dated as of

May 7, 2020 between ACM Research (Lingang), Inc. and China (Shanghai) Pilot Free Trade Zone Lin-gang Special Area Administration

  Commitment Letter Regarding the Lock-up of Shares, effective as of May 26, 2020, of ACM Research, Inc.
  Commitment  Letter  Regarding  Shareholding  Intent  and  Intent  to  Reduce  Shareholding,  effective  as  of  May  26,  2020,  of  ACM  Research,  Inc.  and

David H. Wang

  Commitment Letter Regarding the Plan and Binding Measures for Stabilizing the Stock Price of ACM Research (Shanghai), Inc. Within Three Years

After Listing, effective as of May 26, 2020, of ACM Research, Inc., ACM Research (Shanghai), Inc., and certain individuals named therein

  Commitment  Letter  Regarding  Fraudulent  Issuance  of  Listed  Shares,  effective  as  of  May  26,  2020,  of  ACM  Research,  Inc.,  ACM  Research

(Shanghai), Inc. and David H. Wang

  Commitment  Letter  Regarding  the  Lack  of  False  Records,  Misleading  Statements  or  Major  Omissions  in  the  Preliminary  Information  Document,

effective as of May 26, 2020, of ACM Research, Inc.

  Commitment Letter Regarding Making Up for Diluted Immediate Returns, effective as of May 26, 2020, of ACM Research, Inc.
  Commitment Letter Regarding Unfulfilled Commitment on Binding Measures, effective as of May 26, 2020, of ACM Research, Inc. and David H.

Wang

  Commitment Letter Regarding the Avoidance of Competition in the Same Industry, effective as of May 26, 2020, of ACM Research, Inc.
  Commitment Letter Regarding the Standardization and Reduction of Related Transactions, effective as of May 26, 2020, of ACM Research, Inc.

115

Table of Contents

10.38†
10.39‡†
10.40†
10.41†
10.42†
10.43†

10.44†
10.45‡†

10.46‡†

10.47

10.48‡†
10.49†*
10.49(a)

10.50†

10.51†

21.01
23.01
31.01

31.02

32.01

101.INS

101.SCH
101.CAL
101.DEF
101.LAB
101.PRE
104

  Commitment Letter Regarding the Avoidance of Funds Occupation and Illegal Guarantee, effective as of May 26, 2020, of ACM Research, Inc.
  Statement and Commitment Letter, effective as of May 26, 2020, of ACM Research, Inc.
  Commitment Letter Regarding Property Lease Matters, effective as of May 26, 2020, of ACM Research, Inc.
  Commitment Letter Regarding Social Insurance and Housing Provident Fund Matters, effective as of May 26, 2020, of ACM Research, Inc.
  Commitment Letter Regarding Foreign Exchange Matters, effective as of May 26, 2020, of ACM Research, Inc.
  Confirmation and Commitment Letter Regarding the Historical Evolution Related Matters Regarding ACM Research (Shanghai), Inc., effective as of

May 26, 2020, of ACM Research, Inc.

  Confirmation Letter, effective as of May 26, 2020, of ACM Research, Inc.
  Qingdao Fortune-Tech Xinxing Capital Partnership (L.P.) Partnership Agreement, dated June 9, 2020, among China Fortune Tech Capital Co., Ltd., as

general partner, and the several limited partners named therein, including ACM Research (Shanghai), Inc.

  Supplementary Agreement to Partnership Agreement of Qingdao Fortune-Tech Xinxing Capital Partnership (L.P.), dated June 15, 2020, among China

Fortune Tech Capital Co., Ltd., as general partner, and the several limited partners named therein, including ACM Research (Shanghai), Inc.

  Adoption  Agreement  dated  July  29,  2020  between  ACM  Research,  Inc.  and  Shengxin  (Shanghai)  Management  Consulting  Limited  Partnership
(amending the Second Amended and Restated Registration Rights Agreement between ACM Research, Inc. and certain of its stockholders filed with
the SEC on October 18, 2017 as Exhibit 10.09 to Amendment No. 1 to Registration Statement on Form S-1)

  Facilities Agreement dated August 3, 2020 between China Merchants Bank Co., Ltd. Shanghai Branch and ACM Research (Shanghai), Inc.
  Form of Shanghai Public Rental Housing Overall Pre-Sale Contract
  Schedule identifying agreements substantially identical to the form of Shanghai Public Rental Housing Overall Pre-Sale Contract filed as Exhibit 10.01

hereto

  Loan and Mortgage Contract dated November 19, 2020 between China Merchants Bank Co., Ltd., Shanghai Pilot Free Trade Zone Lin-Gang Special

Area Sub-branch and Shengwei Research (Shanghai), Inc.
Irrevocable Letter of Guarantee dated November 19, 2020 between China Merchants Bank Co., Ltd., Shanghai Pilot Free Trade Zone Lin-Gang Special
Area Sub-branch and ACM Research (Shanghai), Inc.

  List of Subsidiaries of ACM Research, Inc.
  Consent of BDO China Shu Lan Pan Certified Public Accountants LLP
  Certification of Principal Executive Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant

to Section 302 of the Sarbanes-Oxley Act of 2002

  Certification of Principal Financial Officer Pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as Adopted Pursuant

to Section 302 of the Sarbanes-Oxley Act of 2002

  Certification of Principal Executive Officer and Principal Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of

the Sarbanes-Oxley Act of 2002
Inline XBRL Instance Document (the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the
Inline XBRL document)
Inline XBRL Taxonomy Extension Schema Document
Inline XBRL Taxonomy Extension Calculation Linkbase Document
Inline XBRL Taxonomy Extension Definition Linkbase Document
Inline XBRL Taxonomy Extension Label Linkbase Document
Inline XBRL Taxonomy Extension Presentation Linkbase Document

  Cover Page Interactive Data File (formatted as inline XBRL and contained in exhibit 101)

+
‡
† 
*

Indicates management contract or compensatory plan.
Certain information in this exhibit was omitted by means of redacting a portion of the text and replacing it with [***]
Unofficial English translation of original document prepared in Mandarin Chinese.
Certain  appendices  have  been  omitted  pursuant  to  Item  601(a)(5)  of  Regulation  S-K.  We  hereby  undertake  to  furnish  copies  of  the  omitted  appendices  upon
request by the Securities and Exchange Commission, provided that we may request confidential treatment pursuant to Rule 24b‑2 of the Securities Exchange Act
of 1934 for the appendices so furnished.

116

 
 
 
 
 
 
 
Table of Contents

SIGNATURES

Pursuant  to  the  requirements  of  Section  13  or  15(d)  of  the  Securities  Act  of  1934,  the  registrant  has  duly  caused  this  report  to  be  signed  on  its  behalf  by  the

undersigned, thereunto duly authorized, as of March 1, 2021.

ACM RESEARCH, INC.

By:

/s/ David H. Wang
David H. Wang
Chief Executive Officer and President

Pursuant to the requirements of the Securities Act of 1934, this report has been signed below by the following persons in the capacities indicated as of March 1,

2021:

Signature

/s/ David H. Wang
David H. Wang

/s/ Mark A. McKechnie
Mark A. McKechnie

/s/ Haiping Dun
Haiping Dun

/s/ Chenming Hu
Chenming Hu

/s/ Tracy Liu
Tracy Liu

/s/ Yinan Xiang
Yinan Xiang

Zhengfan Yang

Title

  Chief Executive Officer, President and Director

(Principal Executive Officer)

  Chief Financial Officer, Executive Vice President and Treasurer

(Principal Financial and Accounting Officer)

  Director

  Director

  Director

  Director

  Director

117

 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
 
   
 
   
Description of ACM Research, Inc. Securities

Exhibit 4.05

The following information constitutes the “Description of Securities” required by Item 202(a) of Regulation S-K. As of March 1, 2021, ACM Research, Inc. has one class of
securities registered under Section 12 of the Securities Exchange Act of 1934, as amended, which is its Class A common stock, $0.0001 par value per share.

References herein to “we,” “our,” “us,” or “our company” refer to ACM Research, Inc., a Delaware corporation. The following information summarizes the material terms of
our common and preferred stock and warrants, as well as relevant provisions of our charter, which includes certificates of designations relating to each series of our preferred
stock,  and  bylaws,  the  Delaware  General  Corporation  Law  and  the  Warrant  (as  defined  below).  For  a  complete  description  of  the  terms  of  our  common  stock  and  other
securities, please refer to our charter and bylaws and the Warrant.

Authorized Capital Stock

Our authorized capital stock consists of 50,000,000 shares of Class A common stock, $0.0001 par value per share, 2,409,738 shares of Class B common stock, $0.0001 par
value per share, and 10,000,000 shares of preferred stock, $0.0001 par value per share. Class A common stock and Class B common stock are referred to collectively as
common stock. Authorized but unissued shares of Class B Common Stock are not available for reissuance.

Common Stock

Voting Rights

Except as otherwise required by Delaware law, at every annual or special meeting of stockholders, holders of Class B common stock are entitled to twenty votes per share and
holders of Class A common stock are entitled to one vote per share. The holders of Class A common stock and Class B common stock vote together as a single class, unless
otherwise required by law.

Dividends

Subject to preferences that may be applicable to any then outstanding preferred stock, the holders of our outstanding shares of common stock are entitled to receive dividends,
if any, as may be declared from time to time by the board of directors out of legally available funds. The holders of Class A common stock and Class B common stock are
entitled to share equally, identically and ratably, on a per share basis, with respect to any dividend or distribution unless different treatment of the shares of each such class is
approved by the affirmative vote of the holders of a majority of the outstanding shares of Class A common stock and Class B common stock, each voting separately as a class.
At present, we have no plans to issue dividends.

Liquidation

In  the  event  of  our  liquidation,  dissolution  or  winding  up,  holders  of  common  stock  will  be  entitled  to  share  ratably  in  the  net  assets  legally  available for distribution to
stockholders after the payment of all of our debts and other liabilities, subject to the satisfaction of any liquidation preference granted to the holders of any outstanding shares
of preferred stock.

Conversion

Each outstanding share of Class B common stock is convertible into one share of Class A common stock (a) at any time, at the option of the holder, or (b) upon any transfer of
such share of Class B common stock, whether or not for value, except for certain transfers described in our charter, including transfers to family members, trusts solely for the
benefit of the stockholder or their family members, and partnerships, corporations, and other entities exclusively owned by the stockholder or their family members. Once
converted or transferred and converted into Class A common stock, shares of Class B common stock will not be reissued.

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Other Rights and Preferences

Other  than  as  described  above,  holders  of  common  stock  have  no  preemptive,  conversion  or  subscription  rights,  and  there  are  no  redemption  or  sinking  fund  provisions
applicable to common stock. The rights, preferences and privileges of the holders of common stock are subject to, and may be adversely affected by, the rights of the holders
of shares of any series of preferred stock that we may designate and issue in the future.

Preferred Stock

Under the terms of our charter, the board of directors is authorized to issue up to 10,000,000 shares of preferred stock in one or more series, to establish the number of shares
to be included in each such series, and to fix the designation, powers, preferences and rights of such shares and any qualifications, limitations or restrictions thereof. These
rights, preferences and privileges could include dividend rights, conversion rights, voting rights, terms of redemption, liquidation preferences, sinking fund terms and other
provisions, any or all of which may be greater than the rights of common stock. The issuance of preferred stock with voting and conversion rights may adversely affect the
voting power of the holders of common stock, including the loss of voting control to others, and the likelihood that such holders will receive dividend payments and payments
upon  our  liquidation.  In  addition,  the  issuance  of  preferred  stock  could  have  the  effect  of  delaying,  deferring  or  preventing  a  change  in  control  of  our  company  or  other
corporate action.

Anti-Takeover Provisions

So long as the outstanding shares of Class B common stock represent a majority of the combined voting power of common stock, the holders of Class B common stock will
effectively  control  all  matters  submitted  to  our  stockholders  for  a  vote,  as  well  as  the  overall  management  and  direction  of  our  company,  which  will  have  the  effect  of
delaying, deferring or discouraging another person from acquiring control of our company.

After such time as the shares of Class B common stock no longer represent a majority of the combined voting power of common stock, the provisions of Delaware law, and
our charter and our bylaws may have the effect of delaying, deferring or discouraging another person from acquiring control of our company.

Delaware Law

Section 203 of the Delaware General Corporation Law prevents some Delaware corporations from engaging, under some circumstances, in a business combination,  which
includes a merger or sale of at least 10% of the corporation’s assets with any interested stockholder, meaning a stockholder who, together with affiliates and associates, owns
or, within three years prior to the determination of interested stockholder status, did own 15% or more of the corporation’s outstanding voting stock, unless:

•

•

•

the transaction is approved by the board of directors prior to the time that the interested stockholder became an interested stockholder;

upon consummation of the transaction, which resulted in the stockholder’s becoming an interested stockholder, the interested stockholder owned at least 85% of the
voting stock of the corporation outstanding at the time the transaction commenced, excluding stock owned by directors who are also officers of the corporation; or

subsequent to such time that the stockholder became an interested stockholder the business combination is approved by the board and authorized at an annual or
special meeting of stockholders by at least two-thirds of the outstanding voting stock that is not owned by the interested stockholder.

A Delaware corporation may “opt out” of these provisions with an express provision in its original charter or an express provision in its charter or bylaws resulting from a
stockholders’ amendment approved by at least a majority of the outstanding voting shares. We have not opted out of these provisions. As a result, mergers or other takeover or
change in control attempts of us may be discouraged or prevented.

 
 
 
 
 
 
 
 
 
 
 
 
 
Warrants

On July 29, 2020 we issued a warrant to purchase 242,681 shares of our Class A common stock at a purchase price of $7.50 per share for an aggregate exercise price of
$1,820,107.50, which we refer to as the Warrant.  The Warrant may be exercised during the period beginning immediately after the receipt by the warrant holder, as confirmed
by us, of all approvals required of the governmental department and other regulatory bodies of the People’s Republic of China and ending at 5 p.m., Eastern standard time, on
December 31, 2023.

The exercise price and the number of warrant shares are subject to appropriate adjustment from time to time in order to prevent dilution of the purchase rights granted under
the Warrant. Such adjustment will occur in the event that we:

•

•

pay a dividend or makes any other distribution upon any capital stock payable either in Class A common stock or in securities that are convertible into Class A
common stock without payment of any consideration; or
subdivide (by any stock split, recapitalization or otherwise) outstanding Class A common stock into a greater number of shares.

Such adjustment will also occur in the event of any of any of the following actions, in each case that entitles the holders of Class A common stock to receive (either directly or
upon subsequent liquidation) stock, securities or assets with respect to or in exchange for Class A common stock:

•
•

•
•
•

a reorganization of our company;
reclassification of our stock (other than a change in par value or from par value to no par value or from no par value to par value or as a result of a stock dividend or
subdivision, split-up or combination of shares);
our consolidation or merger;
a sale of all or substantially all of our assets; or
other similar transaction.

Charter and Bylaw Provisions

Our charter and bylaws include a number of provisions that may have the effect of deterring hostile takeovers or delaying or preventing changes in control of our company,
even after such time as the shares of Class B common stock no longer represent a majority of the combined voting power of common stock, including the following:

•          Separate Class B Vote for Certain Transactions. Until the first date on which the outstanding shares of Class B common stock represent less than 35% of the
combined voting power of common stock, any transaction that would result in a change in control of our company will require the approval of a majority of our outstanding
Class B common stock voting as a separate class. This provision could delay or prevent the approval of a change in control that might otherwise be approved by a majority of
outstanding shares of Class A and Class B common stock, voting together on a combined basis.

•                      Dual  Class  Stock.  As  described  above  in  “—Common  Stock—Voting  Rights”  above,  our  charter  provides  for  a  dual  class  common  stock  structure,  which
provides  certain  members  of  our  senior  management  with  the  ability  to  control  the  outcome  of  matters  requiring  stockholder  approval,  even  if  they  collectively  own
significantly less than a majority of the shares of our outstanding Class A and Class B common stock, including the election of directors and significant corporate transactions,
such as a merger or other sale of our company or its assets.

•           Supermajority Approvals.  Our  charter  and  bylaws  provide  that  when  the  outstanding  shares  of  Class  B  common  stock  represent  less  than  a  majority  of  the
combined voting power of common stock, certain amendments to our charter or bylaws will require the approval of two-thirds of the combined vote of our then-outstanding
shares of Class A and Class B common stock. This will have the effect of making it more difficult to amend our charter or bylaws to remove or modify certain provisions.

•         Board of Directors Vacancies. Our charter and bylaws provide that stockholders may fill vacant directorships. When the outstanding shares of Class B common
stock represent less than a majority of the combined voting power of common stock, our charter and bylaws authorize only the board of directors to fill vacant directorships.
In addition, the number of directors constituting the board is set only by resolution adopted by a majority vote of our entire board. These provisions restricting the filling of
vacancies will prevent a stockholder from increasing the size of the board and gaining control of the board by filling the resulting vacancies with its own  nominees.  Our
charter provides that directors may be removed with or without cause only by the affirmative vote of the holders of at least two-thirds of the votes that all of the stockholders
would be entitled to cast in any annual election of directors.

 
 
 
 
 
 
 
 
 
 
 
 
•          Classified Board.  The  board  of  directors  is  not  currently  classified.  Our  charter  and  bylaws  provide  that  when  outstanding  shares  of  Class  B  common  stock
represent less than a majority of the combined voting power of common stock, the board will be classified into three classes of directors, each of which will hold office for a
three-year term. In addition, thereafter, directors may be removed from the board with or without cause only by the affirmative vote of the holders of at least two-thirds of the
voting power of the then-outstanding shares of Class A and Class B common stock. The existence of a classified board could delay a successful tender offeror from obtaining
majority control of the board, and the prospect of that delay might deter a potential offeror.

•           Stockholder Action; Special Meeting of Stockholders. Our charter provides that stockholders will be able to take action by written consent. When the outstanding
shares of Class B common stock represent less than a majority of the combined voting power of common stock, our stockholders will no longer be able to take action by
written consent, and will only be able to take action at annual or special meetings of our stockholders. Stockholders will not be permitted to cumulate their votes for the
election of directors. The absence of cumulative voting may make it more difficult for stockholders who own less than a majority in voting power to elect any directors to the
board of directors. Our bylaws further provide that special meetings of our stockholders may be called only by the board, the chair of the board or our chief executive officer.
A stockholder may not call a special meeting, which may delay the ability of our stockholders to force consideration of a proposal or for holders controlling a majority in
voting power of our capital stock to take any action, including the removal of director.

•         Advance Notice Requirements for Stockholder Proposals and Director Nominations. Our bylaws provide advance notice procedures for stockholders seeking to
bring business before our annual meeting of stockholders, or to nominate candidates for election as directors at any meeting of stockholders. Our bylaws also specify certain
requirements regarding the form and content of a stockholder’s notice. These provisions may preclude our stockholders from bringing matters before our annual meeting of
stockholders or from making nominations for directors at our meetings of stockholders.

•          Issuance of Undesignated Preferred Stock. The board of directors has the authority, without further action by the stockholders, to issue shares of undesignated
preferred stock with rights and preferences, including voting rights, designated from time to time by the board. The existence of authorized but unissued shares of preferred
stock enables the board to render more difficult or to discourage an attempt to obtain control of us by means of a merger, tender offer, proxy contest or otherwise.

Choice of Forum

Our charter provides that the Court of Chancery of the State of Delaware will be the exclusive forum for: any derivative action or proceeding brought on our behalf; any
action asserting a breach of fiduciary duty; any action asserting a claim against us arising pursuant to the Delaware General Corporation Law, or our charter or bylaws; any
action to interpret, apply, enforce, or determine the validity of our charter or bylaws; or any action asserting a claim against us that is governed by the internal affairs doctrine.
The enforceability of similar choice of forum provisions in other companies’ certificates of incorporation has been challenged in legal proceedings, and it is possible that a
court could find these types of provisions to be inapplicable or unenforceable. The choice of forum provision summarized above is not intended to, and would not, apply to
suits brought to enforce any liability or duty created by (i) the Securities Act of 1933 or the rules and regulations thereunder, jurisdiction over which is vested in concurrently
vested in federal and state courts, or (ii) the Securities Exchange Act of 1934 or the rules and regulations thereunder, jurisdiction over which is exclusively vested by statute in
the U.S. federal courts.

Transfer Agent and Registrar

The transfer agent and registrar for our common stock is Computershare Trust Company, N.A.

Nasdaq Global Market

The Class A common stock is listed on the Nasdaq Global Market under the symbol “ACMR.”

 
 
 
 
 
 
 
 
 
 
Consent of Independent Registered Public Accounting Firm

Exhibit 23.01

ACM Research, Inc.
42307 Osgood Road, Suite I
Fremont, California 94539
United States

We hereby consent to the incorporation by reference in the Registration Statements on Form S-3 (No. 333-228734)  and  Form  S-8  (Nos.  333-222702  and  333-232780)  of
ACM  Research,  Inc.  of  our  reports  dated  March  1,  2021,  relating  to  the  consolidated  financial  statements  and  the  effectiveness  of  the  Company’s  internal  control  over
financial reporting, which appears in this Form 10-K for the year ended December 31, 2020.

BDO China Shu Lun Pan Certified Public Accountants LLP
Shenzhen, The People’s Republic of China

March 1, 2021

CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.01

I, David H. Wang, certify that:

1.  I have reviewed this Annual Report on Form 10-K of ACM Research, Inc.

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 annual 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 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

(e)  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 this annual report) that has materially affected, or is reasonably likely to
materially affect, the registrant’s internal control over financial reporting.

5.  The registrant’s other certifying officer 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.

Date: March 1, 2021

/s/ David H. Wang
David H. Wang
Chief Executive Officer and President
(Principal Executive Officer)

 
 
 
CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER
PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.02

I, Mark A. McKechnie, certify that:

1.  I have reviewed this annual report on Form 10-K of ACM Research, Inc.

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 annual 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 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 this annual report) that has materially affected, or is reasonably likely to
materially affect, the registrant’s internal control over financial reporting.

5.  The registrant’s other certifying officer 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 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.

Date: March 1, 2021

/s/ Mark A. McKechnie
Mark A. McKechnie
Chief Financial Officer, Executive Vice President and Treasurer
(Principal Financial Officer)

 
 
 
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 on Form 10-K of ACM Research, Inc. for the year ended December 31, 2020, as filed with the Securities and Exchange Commission on
the date hereof (the “Report”), each of the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002,
that, to his or her knowledge on the date hereof:

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

2.  the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of ACM
Research, Inc. for the period presented therein.

Exhibit 32.01

Date: March 1, 2021

Date: March 1, 2021

/s/ David H. Wang
David H. Wang
Chief Executive Officer and President
(Principal Executive Officer)

/s/ Mark A. McKechnie
Mark A. McKechnie
Chief Financial Officer, Executive Vice President and Treasurer
(Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Report or as a separate
disclosure document.