Quarterlytics / Industrials / Industrial - Pollution & Treatment Controls / Energy Recovery, Inc.

Energy Recovery, Inc.

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FY2016 Annual Report · Energy Recovery, Inc.
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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, 2016 

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: 001-34112 

Energy Recovery, Inc. 

(Exact Name of Registrant as Specified in Its Charter) 

Delaware 
(State or Other Jurisdiction of Incorporation or Organization) 

01-0616867 
(I.R.S. Employer Identification No.) 

1717 Doolittle Drive, San Leandro, CA 94577 
(Address of Principal Executive Offices) 

Registrant’s telephone number, including area code: (510) 483-7370  

Securities registered pursuant to Section 12(b) of the Securities Exchange Act of 1934: 

Title of Each Class 
Common stock, $0.001 par value 

Name of Exchange on Which Registered 
The NASDAQ Stock Market LLC 

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

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

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. ☐ Yes ☑ No 

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

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive 
Data File required to be submitted and posted 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 and post such files). ☑ Yes ☐ No 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not contained 
herein,  and  will not  be contained,  to the  best  of  registrant’s  knowledge,  in  definitive  proxy  or information  statements  incorporated  by 
reference in Part III of this Form 10-K or any amendment to this Form 10-K.  ☑ 

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

Large accelerated filer ☐ 
Non-accelerated filer ☐ (Do not check if a smaller reporting company) 

Accelerated filer ☑ 
Smaller reporting company ☐ 

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

The aggregate market value of the voting stock held by non-affiliates amounted to approximately $274 million on June 30, 2016. 

The number of shares of the registrant’s common stock outstanding as of February 28, 2017 was 53,880,311.  

DOCUMENTS INCORPORATED BY REFERENCE 

Parts of the Proxy Statement for the Registrant’s Annual Meeting of Stockholders to be held on June 22, 2017 are incorporated by reference 
into Part III of this Annual Report on Form 10-K. 

 
   
   
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TABLE OF CONTENTS 

PART I 

Page 

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

Business ........................................................................................................................................................  4 
Risk Factors ..................................................................................................................................................  12 
Unresolved Staff Comments .........................................................................................................................  20 
Properties ......................................................................................................................................................  20 
Legal Proceedings ........................................................................................................................................  20 
Mine Safety Disclosures ...............................................................................................................................  20 

PART II 

Item 5 

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

Securities ....................................................................................................................................................  21 
Selected Financial Data ................................................................................................................................  23 
Item 6 
Item 7 
Management’s Discussion and Analysis of Financial Condition and Results of Operations .......................  24 
Item 7A  Quantitative and Qualitative Disclosures About Market Risk ......................................................................  42 
Financial Statements and Supplementary Data ............................................................................................  43 
Item 8 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure .......................  80 
Item 9 
Controls and Procedures ...............................................................................................................................  80 
Item 9A 
Other Information .........................................................................................................................................  82 
Item 9B 

Item 10 
Item 11 
Item 12 
Item 13 
Item 14 

Directors, Executive Officers and Corporate Governance ...........................................................................  82 
Executive Compensation ..............................................................................................................................  82 
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters .....  82 
Certain Relationships and Related Transactions and Director Independence ..............................................  82 
Principal Accounting Fees and Services .......................................................................................................  82 

PART III 

Exhibits and Financial Statement Schedules ................................................................................................  83 
Item 15 
Form 10-K Summary ....................................................................................................................................  84 
Item 16 
SIGNATURES .................................................................................................................................................................  85 

PART IV 

 
  
  
  
  
  
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FORWARD- LOOKING INFORMATION 

This Annual Report on Form 10-K, including “Item 7 – Management’s Discussion and Analysis of Financial Condition 
and Results of Operations” and certain information incorporated by reference, contain forward-looking statements within 
the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements in this 
report  include,  but  are  not  limited  to,  statements  about  our  expectations,  objectives,  anticipations,  plans,  hopes,  beliefs, 
intentions, or strategies regarding the future. 

Forward-looking  statements  represent  our  current  expectations  about  future  events,  are  based  on  assumptions,  and 
involve risks and uncertainties. If the risks or uncertainties occur or the assumptions prove incorrect, then our results may 
differ materially from those set forth or implied by the forward-looking statements. Our forward-looking statements are not 
guarantees of future performance or events. 

Words such as “expects,” “anticipates,” “aims,” “projects,” “intends,” “plans,” “believes,” “estimates,” “seeks,” 
variations  of  such  words,  and  similar  expressions  are  also  intended  to  identify  such  forward-looking  statements.  These 
forward-looking statements are subject to risks, uncertainties, and assumptions that are difficult to predict; therefore, actual 
results may differ materially and adversely from those expressed in any forward-looking statements. Readers are directed to 
risks and uncertainties identified under “Item 1A – Risk Factors” and elsewhere in this report for factors that may cause 
actual  results  to  be  different  from  those  expressed  in  these  forward-looking  statements.  Except  as  required  by  law,  we 
undertake no obligation to revise or update publicly any forward-looking statements for any reason. 

Forward-looking statements in this report include, without limitation, statements about the following: 

●  our belief that levels of gross profit margin are sustainable to the extent that volume grows, we experience a
favorable  product  mix,  pricing  remains  stable,  and  we  continue  to  realize  cost  savings  through  production
efficiencies and enhanced yields; 

●  our plan to improve our existing energy recovery devices and to develop and manufacture new and enhanced

versions of these devices; 

●  our belief that our PX® energy recovery devices are the most cost-effective energy recovery devices over time

and will result in low life-cycle costs; 

●  our belief that our turbocharger devices have long operating lives; 

●  our objective of finding new applications for our technology and developing new products for use outside of 

desalination, including oil & gas applications; 

●  our expectation that our expenses for research and development and sales and marketing may increase as a 

result of diversification into markets outside of desalination; 

●  our expectation that we will continue to rely on sales of our energy recovery devices in the desalination market
for a substantial portion of our revenue and that new desalination markets, including the United States, will
provide revenue opportunities to us; 

●  our ability to meet projected new product development dates, anticipated cost reduction targets, or revenue

growth objectives for new products; 

●  our belief that we can commercialize the VorTeq™ hydraulic fracturing system; 

●  our belief that customers will accept and adopt our new products; 

●  our belief that our current facilities will be adequate for the foreseeable future; 

●  our expectation that sales outside of the United States will remain a significant portion of our revenue; 

● 

the timing of our receipt of payment for products or services from our customers; 

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●  our belief that our existing cash balances and cash generated from our operations will be sufficient to meet our
anticipated liquidity needs for the foreseeable future, with the exception of a decision to enter into an acquisition
and/or fund investments in newly developed technology arising from rapid market adoption that could require
us to seek additional equity or debt financing; 

●  our  expectation  that,  as  we  expand  our  international  sales,  a  portion  of  our  revenue  could  continue  to  be

denominated in foreign currencies; 

●  our belief that new markets will grow in the water desalination market;  

●  our expectation that we will be able to enforce our intellectual property rights; and 

●  other  factors  disclosed  under  Items  1  –  Business,  Item  1A-  Risk  Factors,  Item  2  –  Properties,  Item  7  –
Management’s Discussion and Analysis of Financial Condition and Results of Operation, Item 7A – Quantitative 
and Qualitative Disclosures about Market Risks and elsewhere in this Form 10-K. 

You should not place undue reliance on these forward-looking statements, which reflect management’s opinions only as 
of the date of the filing of this Annual Report on Form 10-K. All forward-looking statements included in this document are 
subject to additional risks and uncertainties further discussed under “Item 1A – Risk Factors” and are based on information 
available to us as of March 9, 2017. We assume no obligation to update any such forward-looking statements. It is important 
to note that our actual results could differ materially from the results set forth or implied by our forward-looking statements. 
The factors that could cause our actual results to differ from those included in such forward-looking statements are set forth 
under the heading “Item 1A – Risk Factors” and our results disclosed from time to time in our reports on Forms 10-Q and 
8-K and our Annual Reports to Stockholders. 

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ITEM 1 — BUSINESS 

OVERVIEW 

PART I 

Energy Recovery, Inc. (the “Company,” “Energy Recovery,” “our,” “us,” and “we”) is an energy solutions provider to 
industrial  fluid  flow  markets  worldwide.  Our  core  competencies  are  fluid  dynamics  and  advanced  material  science.  Our 
products make industrial processes more operational and capital expenditure efficient. Our solutions convert wasted pressure 
energy into a reusable asset and preserve or eliminate pumping technology in hostile processing environments. Our solutions 
are  marketed  and  sold  in  fluid  flow  markets,  such  as  water  desalination,  oil  &  gas,  and  chemical  processing,  under  the 
trademarks  ERI®,  PX®,  Pressure  Exchanger®,  PX  Pressure  Exchanger®,  AT™,  AquaBold™,  VorTeq™,  IsoBoost®,  and 
IsoGen®. Our solutions are owned, manufactured, and/or developed, in whole or in part, in the United States of America 
(“U.S.”) and the Republic of Ireland. 

Energy  Recovery  was  incorporated  in  Virginia  in  1992,  reincorporated  in  Delaware  in  2001,  and  became  a  public 
company in July 2008. Our headquarters and primary manufacturing center is located at 1717 Doolittle Drive, San Leandro, 
California 94577, and we have four (4) wholly-owned subsidiaries: ERI Energy Recovery Holdings Ireland Limited; ERI 
Energy Recovery Ireland Ltd.; Energy Recovery Iberia, S.L.; and Energy Recovery Canada Corp. We also have sales offices 
in Dubai, United Arab Emirates and Shanghai, Peoples Republic of China. Our main telephone number is (510) 483-7370. 

The Energy Recovery website is www.energyrecovery.com. We use the Investor Relations section of our website as a 
routine channel for distribution of important information, including news releases, presentations, and financial statements. 
We intend to use the Investor Relations section of our website as a means of complying with our disclosure obligations under 
Regulation FD. Accordingly, investors should monitor our Investor Relations website in addition to press releases, Securities 
and Exchange Commission (“SEC”) filings, and public conference calls and webcasts. Our Annual Report on Form 10-K, 
quarterly reports on Form 10-Q, current reports on Form 8-K, all amendments to those reports, and the Proxy Statement for 
our Annual Meeting of Stockholders are made available, free of charge, in the Investor Relations section of our website, as 
soon as reasonably practicable after the reports have been filed with or furnished to the SEC. The information contained on 
our website or any other website is not part of this report nor is it considered to be incorporated by reference herein or with 
any other filing we make with the SEC. 

FLUID FLOW MARKETS 

Our primary industrial fluid flow markets are water desalination and oil & gas. We have been and continue to be the 
technology  leader  for  energy  recovery  devices  (“ERDs”)  in  the  water  desalination  market  with  our  proprietary  Pressure 
Exchanger (“PX”) and turbocharger technologies. We also provide high-performance and high-efficiency pumps to facilitate 
a  packaged  solution  for  our  customers.  Building on  our  leading  technology, we have  expanded  our  technology  solutions 
offering into other fluid flow markets, such as those found in upstream, midstream, and downstream applications of the oil 
& gas industry, and are exploring other end markets for which our solutions may be applicable. We offer the VorTeq hydraulic 
fracturing system (“VorTeq”), IsoBoost, and IsoGen product lines to the oil & gas market. 

Water Desalination 

Water desalination has been our core market for revenue generation to date. The water desalination market ranges from 
small water desalination plants such as those used in cruise ships and resorts, to mega-project desalination plant deployments 
globally. Because of the geographical location of many significant desalination projects, geopolitical and economic events 
can have an effect on the timing of expected projects. In addition, population and economic growth in countries such as India 
and China are driving water demand for human, agricultural, and industrial use. We anticipate that markets traditionally not 
associated with water desalination, including the United States, will inevitably develop and provide further revenue growth 
opportunities.  Our  solutions  leverage  our  PX,  turbocharger,  and  pump  technologies  providing  our  customers  significant 
operational efficiency and energy savings. 

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Oil & Gas 

Across the oil & gas upstream, midstream and downstream markets, highly pressurized fluid flows are required to extract 

and process oil and gas. These pressurized fluid flows are both a necessity and liability to the oil & gas industry.  

Within the oil & gas upstream sector, hydraulic fracturing is a well-stimulation technique in which pressurized liquid 
containing a highly abrasive, proppant-laden fluid is injected into a wellbore to create cracks in deep-rock formations thereby 
permitting oil & gas extraction. Oilfield service providers utilize high-pressure hydraulic fracturing pumps to pressurize the 
fracturing fluid at treating pressures up to 15,000 psi. These pumps are routinely destroyed by the abrasive fluids during the 
hydraulic fracturing process causing significant oilfield service operator costs associated with excessive downtime, repairs, 
maintenance, and capital equipment redundancy. Our VorTeq leverages our PX technology to isolate high-pressure hydraulic 
fracturing pumps from abrasive fracturing fluid thereby enabling oilfield service operators to realize immediate and long-
term savings. 

Within the oil & gas midstream and downstream sectors, pressure energy becomes a waste product at different stages of 
oil and gas processing. It is at these stages that our IsoBoost and IsoGen technology enables the recovery of pressure energy 
in  the  fluid  flow  either  through  the  exchange  of  pressure  within  the  application  or  by  converting  it  to  electricity.  Our 
technology  enables  gas  processing  plant  and  pipeline  owners  and  operators  to  achieve  immediate  and  long-term  energy 
savings with little or no operational disruption.  

OUR SOLUTIONS 

Energy, repairs, maintenance, and capital costs are major cost drivers in the water desalination and oil & gas markets. 
Energy Recovery has developed proprietary technology solutions to address these major cost drivers. In the water desalination 
market,  our  energy  recovery  solutions  reduce  plant  operating  costs  by  capturing  and  reusing  the  otherwise  lost  pressure 
energy from the reject stream of the desalination process. In the oil & gas market, our hydraulic fracturing solution reduces 
operating and capital equipment costs by isolating high cost pumping equipment from highly abrasive fracturing fluids; while 
our centrifugal solutions reduce plant or pipeline operating costs by capturing and reusing otherwise lost pressure energy. 

Water Desalination 

Our water desalination ERDs are categorized into two technology groups: PX Pressure Exchangers and turbochargers. 
The  first  technology  group  is  comprised  of  our  patented  PX  ERD  technology  consisting  of  ceramic  rotors  and  almost 
frictionless hydrodynamic bearings. Our PX ERDs enable water desalination plant operators to capture wasted hydraulic 
pressure  energy  from  a high-pressure fluid flow  and  transfer the  energy to  a  low-pressure  fluid  flow,  thereby  recovering 
wasted pressure energy. Our PX ERDs perform with up to 98% efficiency and unmatched uptime in the desalination industry, 
and can reduce a desalination plant’s energy costs by up to 60%. 

The second technology group is comprised of turbochargers (“AT Turbochargers”) designed for low-pressure brackish 
and high-pressure seawater reverse osmosis systems. Our AT Turbochargers provide premium efficiency with state-of-the-
art  engineering  and  configuration.  Designed  for  reliability  and  optimum  efficiency,  our  turbochargers  offer  substantial 
savings, and the custom-designed hydraulics and 3-D geometry allow for optimum performance. Also, the patent-protected 
technology for volute inserts allows field flexibility. 

Complementing both our PX ERDs and AT Turbochargers are our high-performance, high-efficiency pumps. 

Oil & Gas  

In the oil & gas market, we design and manufacture innovative solutions that preserve or eliminate pumping technology 
in hostile processing environments and convert wasted pressure energy into a reusable asset. Our core technology solutions 
are the VorTeq and our centrifugal line of products, the IsoBoost and the IsoGen. 

The VorTeq is an enabling technology for oilfield service (“OFS”) companies to isolate and preserve costly hydraulic 
fracturing pumps by re-routing hostile fracturing fluid away from these critical pumps. These hydraulic fracturing pumps will 
then process only water, which leads to reduced repairs and maintenance costs, increased fleet revenue, and reduced capital 
costs by extending pump life expectancy and eliminating redundant capital equipment. The VorTeq further allows for the 
migration  to  increasingly  efficient  pumping  technology  that  could  lead  to  the  revolutionizing  of  the  hydraulic  fracturing 
system. 

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During 2015, we conducted VorTeq field trials with Liberty Oil Field Services, our early stage test partner, culminating 
in the successful delivery of proppant to a well located in the Bakken Formation. In October 2015, through our subsidiary 
ERI  Energy  Recovery  Ireland,  Ltd.,  we  entered  into  a  fifteen-year  license  agreement  with  Schlumberger  Technology 
Corporation (the “VorTeq Licensee”) for the exclusive, worldwide right to use the VorTeq for hydraulic fracturing onshore 
operations.  The  VorTeq  is  currently  in  the  research  and  development  stage  and  we  are  actively  working  towards 
commercialization. 

IsoBoost and IsoGen technologies were commercialized in 2012. Our IsoBoost energy recovery systems are comprised 
of hydraulic turbo chargers and related controls and automation systems. The IsoBoost enable oil & gas operators to capture 
wasted hydraulic pressure energy from a high-pressure fluid flow and transfer the energy to a low-pressure fluid flow, thereby 
recovering wasted pressure energy. Our IsoGen energy recovery systems are comprised of hydraulic turbines, generators, 
and related controls and automation systems. The IsoGen enables oil & gas operators to capture hydraulic energy and generate 
electricity from high-pressure fluid flows. Additionally, our energy recovery and power generation systems result in lower 
capital costs for oil & gas operators by minimizing the need for high-pressure pumps that consume large amounts of energy.  

We have contracted and delivered oil and gas solutions, as pilot projects, to customers in North America, Asia, and the 
Middle East for use in gas processing and ammonia processing applications. In 2015, we commissioned our first IsoGen unit 
in a major gas processing plant in the Middle East. In 2016, we received our first major purchase order for multiple units of 
our IsoBoost technology for integration into a major gas processing plant to be constructed in the Middle East. The contract 
is for approximately $7 million worth of equipment and services with an option for an additional $4 million to be determined 
at a later date, which may or may not be exercised. The optional supply may not be confirmed by the customer until the latter 
portion of 2017. 

Services 

We provide a portfolio of services tailored to our customers’ needs. Specifically, we assist our customers in the early 
stages of planning and design by leveraging our broad experience in fluid flows and advanced material science. We also 
provide engineering, technical support, and training to customers during installation and commissioning. Additionally, we 
offer preventive maintenance and support services as well as reinstallation services. To date, the revenue from these services 
has not represented a significant portion of our revenue. 

CUSTOMERS 

Water Desalination 

Our water desalination customers include major international engineering, procurement, and construction (“EPC”) firms 
that design and build large desalination plants; original equipment manufacturers (“OEM”) which are companies that supply 
equipment and packaged solutions for small- to medium-sized desalination plants; and national, state and local municipalities 
worldwide.  

Large Engineering, Procurement and Construction Firms 

A significant portion of our revenue historically has come from sales of our ERD solutions to large EPC firms worldwide 
that  have  the  required  desalination  expertise  to  engineer,  undertake  procurement  for,  construct,  and  sometimes  own  and 
operate, large desalination plants or mega-projects (“MPD”). We work with these firms to specify our solutions for their 
plants.  The  time  between  project  tender  and  shipment  can  range  from  sixteen  (16)  to  thirty-six  (36)  months.  Each  MPD 
project typically represents a revenue opportunity of $1 million to $10 million. 

A limited number of these EPC firms can account for 10% or more of our product revenue. Revenue from customers 
representing 10% or more of product revenue varies from year to year. For the years ended December 31, 2016 and 2015, 
one customer, Acciona Agua, S.A.U., accounted for approximately 11% and 14%, respectively, of total product revenue. For 
the year ended December 31, 2014, one customer, IDE Americas, Inc., accounted for approximately 14% of total product 
revenue. 

Original Equipment Manufacturers 

We also sell our solutions and services to OEM suppliers of pumps and other water-related equipment for assembly and 
use in small- to medium-sized desalination plants located in hotels, power plants, cruise ships, farm operations, island bottlers, 
mobile and containerized water desalination solutions, and small municipalities. These OEMs also purchase our solutions for 
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“quick water” or emergency water solutions. The time from project tender and shipment can range from one (1) to twelve 
(12) months. OEM projects typically represent revenue opportunities of $0.01 million to $1 million. 

Our OEM customer base accounted for approximately 39%, 45%, and 57% of our total revenues, for the years ended 
December 31, 2016, 2015, and 2014, respectively. We typically sell and promote our packaged solutions to this sales channel 
represented by a product mix of PX Pressure Exchangers, turbochargers, high-pressure pumps, and circulation “booster” 
pumps. 

Oil & Gas 

Our oil & gas customers include international oil companies (“IOC”), national oil companies (“NOC”), exploration and 
production  companies  (“E&P”),  oilfield  service  companies  (“OFS”),  and  EPC  firms  that  design  and  build  oil  &  gas 
processing plants.  

Upstream 

OFS companies provide the infrastructure, equipment, intellectual property, and services needed by the oil & gas industry 
to explore for, extract, and transport crude oil and natural gas. OFS hydraulic fracturing operators face significant pressure 
to reduce costs as oil & gas companies curtail capital expenditures and seek operational efficiencies in response to lower 
commodity prices. We developed the VorTeq which enables these operators to isolate pumps from fracturing fluid thereby 
reducing operating and capital costs. 

In the third quarter of 2014, we entered into a strategic partnership with Liberty Oil Field Services to pilot and conduct 
field trials with the VorTeq. These field trials commenced in the second quarter of 2015 and were completed in the fourth 
quarter of 2015 with the successful delivery of proppant to a well located in the Bakken Formation. In October 2015, we 
entered into a fifteen-year license agreement with the VorTeq Licensee for the exclusive, worldwide right to use our VorTeq 
technology for hydraulic fracturing onshore operations.  

One customer, Schlumberger Technology Corporation, accounted for 100% of our license and development revenue for 
2016  and  2015,  which  represented  9%  and  2%  of  our  total  revenue  for  the  years  ended  December  31,  2016  and  2015, 
respectively. There was no license and development revenue recognized for 2014. 

Midstream and Downstream 

We have contracted and delivered gas and oil solutions, as pilot projects, to customers in North America, Asia, and the 
Middle East for use in gas processing and/or ammonia processing applications. In 2015, we commissioned our first IsoGen 
unit in a major gas processing plant in the Middle East. In 2016, we received our first major purchase order for multiple units 
of our IsoBoost technology for integration into a major gas processing plant to be constructed in the Middle East.  

For the year ended December 31, 2016, we recognized Oil & Gas Segment revenue from our licensing agreement with 
the VorTeq Licensee and from a purchase order for multiple units of our IsoBoost technology. For the year ended December 
31, 2015, we recognized Oil & Gas Segment revenue from the license agreement with the VorTeq Licensee, a cancellation 
fee of an IsoBoost purchase order, and from the commissioning of an IsoGen system. For the year ended December 31, 2014, 
we recognized Oil & Gas Segment rental income from the operating lease and subsequent lease buy-out of an IsoGen system. 

While one customer, Tecnicas Reunidas, accounted for 100% of our 2016 Oil & Gas Segment product revenue, no Oil 
& Gas Segment customer accounted for more than 10% of our total product revenue for the years ended December 31, 2016, 
2015, and 2014, respectively. 

Additional information regarding our product revenue by segment is included in Note 13 to the Consolidated Financial 

Statements in Part II, Item 8 of this Form 10-K. 

COMPETITION 

Water Desalination 

The market for ERDs and pumps in the water desalination market is competitive. As the demand for fresh water increases 

and the market expands, we expect competition to persist and intensify. 

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We have three main competitors for our ERDs: Flowserve Corporation (“Flowserve”), Fluid Equipment Development 
Company (“FEDCO”), and Danfoss Group (“Danfoss”). We compete with these companies on the basis of price, quality, 
efficiency, lead time, life expectancy, downtime, and maintenance costs. Although these companies may offer competing 
solutions at lower initial price, our solutions offer a competitive advantage because we believe that they provide the lowest 
life-cycle cost and are therefore the most cost-effective ERDs for the reverse osmosis desalination industry over time. 

In the market for large desalination projects, our PX ERDs and large turbochargers compete primarily with Flowserve’s 
DWEER product. We believe that our PX ERDs have a competitive advantage over DWEER devices because our devices 
are made with highly durable and corrosion-resistant ceramic parts that are designed for a life of more than 25 years, are 
warranted for high efficiencies, cause no unplanned downtime, and offer lower lifecycle costs. Additionally, the PX ERDs 
offer  optimum  scalability  with  a  quick  startup  as  well  as  minimal  maintenance.  We  believe  that  our  large  turbocharger 
solutions also have a competitive advantage over Flowserve’s Pelton Turbine product, particularly in countries where energy 
costs are low and upfront capital costs are a critical factor in purchase decisions, because our turbocharger solutions have 
lower upfront capital costs, a simple design with one rotating assembly, a small physical footprint, and a long operating life 
that leads to low total lifecycle costs. 

In the market for small-to-medium-sized desalination plants, our solutions compete with FEDCO’s turbochargers and 
Danfoss’s  ERDs.  We  believe  that  our  PX  ERDs  have  a  competitive  advantage  over  these  solutions  because  our  devices 
provide up to 98% energy efficiency, have lower lifecycle maintenance costs, and are made of highly durable and corrosion-
resistant ceramic parts. We also believe that our turbochargers compete favorably with FEDCO’s turbochargers on the basis 
of efficiency and price and because our turbochargers have design advantages that enhance efficiency, field flexibility, and 
serviceability. 

In the market for high-pressure pumps, our solutions compete with pumps manufactured by Clyde Union Ltd.; Düchting 
Pumpen Maschinenfabrik GmbH & Co KG; FEDCO; Flowserve; KSB Aktiengesellschaft; Torishima Pump Mfg. Co., Ltd.; 
Sulzer Pumps, Ltd.; and other companies. We believe that our pump solutions are competitive with these solutions because 
our pumps are developed specifically for reverse osmosis desalination, are highly efficient, and feature product-lubricated 
bearings. 

Oil & Gas  

The market for our technology in the oil & gas market is competitive. As demand for our products increase, we expect 

competition to intensify. 

Within  the  oil  &  gas  upstream  market,  OFS  hydraulic  fracturing  operators  utilize  high-pressure  hydraulic  fracturing 
pumps to pressurize fracturing fluid. This fluid is sent through traditional missile manifolds into the wellbore to create cracks 
in the deep-rock formations thereby permitting oil & gas extraction. Our VorTeq is a hydraulic pumping system that replaces 
the traditional missile manifold used by OFS hydraulic fracturing operators. There are many manufacturers of the traditional 
missile manifolds. 

We  believe  our  VorTeq  technology  represents  a  competitive  advantage  over  existing  missile  manifold  technology 
because our solution re-routes abrasive proppant away from high-pressure pumps, thereby extending pump lifespan, reducing 
repairs and maintenance costs, and decreasing the need for redundant capital equipment. In addition, because our VorTeq 
technology isolates the high-pressure pumps from abrasive proppant, OFS hydraulic fracturing operators have the ability to 
transition to more robust, longer lived centrifugal pumps thereby further decreasing operating and capital costs.  

Within the oil & gas midstream and downstream markets, acid gas removal — also known as amine gas treating — refers 
to a process that utilizes solvents such as an amine solution to remove acid gasses, specifically hydrogen sulfide (H2S) and 
carbon dioxide (CO2) from natural gas, synthesis gas, or other hydrocarbon streams. Our IsoBoost and IsoGen technologies 
integrate into acid gas removal systems to reduce energy consumption and increase the reliability and uptime of the amine 
circulation system. Currently, most acid gas removal plants use pumps and valves to pressurize and depressurize the amine 
solution and the depressurization of the cleansing fluid (e.g. amine) provides an opportunity for the use of ERDs. 

Our IsoBoost system is based partly on hydraulic turbocharger technology. While to our knowledge the only turbocharger 
systems  presently  utilized  in  acid  gas  removal  applications  are  manufactured  by  Energy  Recovery,  there  is  at  least  one 
established competitor, FEDCO, which makes a similar hydraulic turbocharger for desalination applications. We combine 
our highly competitive turbocharger technology with process equipment and control systems to make a unique, proprietary, 
and highly competitive offering for oil & gas and petrochemical plants.  

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Our IsoGen system is partly based on hydraulic turbine technology which converts recovered energy to electric power. 
Many other companies make hydraulic turbines for a broad range of applications. For acid gas removal plants, our competitors 
utilize reverse running pumps (also called hydraulic power recovery turbines or HPRTs) to perform the same energy recovery 
function that our IsoGen systems provide. These reverse running pumps are typically part of a large “skid-mounted” system, 
incorporating a multi-stage pump and motor, all rotating about a common shaft. Flowserve, Sulzer Pumps, Ltd, and Shin 
Nippon Machinery are known to have supplied these systems and other major pump companies may have built systems for 
this  application  as  well.  We  believe  most  of  our  competitors’  reverse  running  pump  systems  present  concerns  related  to 
reliability, operational flexibility, and low energy efficiency, as compared to our IsoGen solution. 

Sales and Marketing 

Energy Recovery has historically offered its products through a direct sales force and a capital sale procurement model. 
In 2015, the Company evolved its business model to a hybrid of direct capital sales and technology licensing. In 2016, the 
Company further expanded its procurement offerings to include energy service agreements, operating leases, and various 
forms of project financing. 

We market and sell our solutions directly to customers through our direct sales organization and, in some countries, 
through authorized, independent sales agents. Our current sales organization consists of two groups: Water Desalination and 
Oil & Gas. 

The Water Desalination group targets MPD, OEM, and aftermarket opportunities within the reverse osmosis desalination 
market. MPD opportunities are for desalination projects exceeding 50,000 cubic meters per day. OEM opportunities include 
sales of PX ERDs, turbochargers, and pumps for plants typically designed to produce less than 50,000 cubic meters per day. 
Aftermarket opportunities include new and replacement parts and products, as well as technical support, training, product 
installation, and plant commissioning.  

Our Oil & Gas group targets IOCs, NOCs, E&Ps, OFSs, or EPCs on behalf of oil producers and chemical producers who 

have applications for our solutions and services. 

Our sales branch in Dubai, United Arab Emirates serves the Middle East, where many water and oil & gas customers are 
located. We have a sales force in Spain focused on the Spain and European markets. We also have a sales office in Shanghai, 
China to address this emerging market for our energy recovery solutions. In North America, our sales office along with our 
corporate headquarters is located in San Leandro, California. As opportunities and diversification dictate, particularly in oil 
& gas, we will look to expand our geographical presence. 

A  significant  portion  of  our  revenue  is  from  outside  of  the  United  States.  Additional  segment  and  geographical 
information regarding our product revenue is included in Note 13 to the Consolidated Financial Statements in Part II, Item 8 
of this Form 10-K. 

Manufacturing 

Our primary Water Segment product manufacturing facility is located in San Leandro, California, where our ERDs and 
pumps are produced, assembled, and tested. We produce the majority of our ceramic components for our PX solutions in our 
advanced ceramics manufacturing facility, as well as complete machining and assemble of all ceramic components for our 
PX devices. In addition, many components of our turbochargers and pumps are also manufactured in San Leandro to protect 
the proprietary nature of our manufacturing methods and product designs and to maintain premium quality standards. 

Our Oil & Gas Segment product manufacturing, assembly, and testing is conducted through our operations in Ireland. 
To  produce  our  Oil  &  Gas  Segment  products,  we  utilize  multiple  supply  chain  partners  and  complete  many  machining, 
assembly, and testing operations in house to protect the proprietary nature of our manufacturing methods and product designs 
and to maintain premium quality standards. Our Ireland operations are also responsible for overseeing the commercialization 
of the VorTeq and expanding our manufacturing activities in Europe. 

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Research and Development 

When developing products and ultimately markets for our products, we seek three distinct process criteria: (1) high 
rates  of  fluid  flow;  (2)  large  pressure  differentials;  and  (3)  high  degrees  of  capital  intensity,  specifically  in  the  form  of 
pumping assets. Based on these criteria, our product development strategy is to identify fluid flow applications where pumps 
are being  destroyed  and/or  where pressure energy  is  being wasted. Our technologies  isolate  pumping  assets from  hostile 
process fluids, or recover otherwise wasted pressure energy. Our research and development effort is therefore focused on (1) 
advancing new products in markets beyond desalination, with a specific and immediate emphasis on oil & gas, where our 
technology is utilized to preserve pumping assets; and (2) enhancing our existing energy recovery device and pumps for the 
water desalination market. 

Energy  Recovery  developed  a  robust,  multi-year  product  development  road  map  which  guides  our  research  and 
development  resource  allocation.  Specific  to  new  product  development,  our  focus  is  overwhelmingly  on  our  proprietary 
pressure exchanger technology given its prohibitive nature and broad technical application. Our corporate objective is to 
achieve proof of concept of one new derivative of the pressure exchanger annually. 

To support our product strategy, we have and will continue to invest in identifying and hiring strong engineering talent 
with expertise in fluid physics and advanced material science. In addition, to enable increasingly complex and shorter-cycle 
product  development,  we  have  invested  in  advanced  numerical  modeling  and  analysis  infrastructure  allowing  for  three-
dimensional, multi-phase, multiphysics, computational fluid dynamics; this coupled with our existing structural interaction 
analytical  capabilities  supports  our  objective  of  achieving  the  proof  of  concept  of  one  new  derivative  of  the  pressure 
exchanger each year. 

Within our Water Segment, research and development investments have produced the latest and most efficient energy 
recovery device, the PX Prime. In addition, we continue to advance our turbocharger and pump technologies to better service 
our water end markets. 

Within our Oil & Gas Segment, research and development investments are primarily focused on commercializing the 
VorTeq and developing products for applications where pumping assets are compromised due to hostile process fluids. We 
expect to announce a new product for these applications in 2017. Our priority remains the commercialization of our VorTeq. 

Research and development expense totaled $10.1 million, $7.7 million, and $9.7 million for the years ended December 
31, 2016, 2015, and 2014, respectively. Research and development costs are expensed as incurred. We expect research and 
development expenses to increase in the future as we further fund our product development road map and more broadly, 
execute against our product strategy. 

Seasonality 

In our Water Segment, we often experience substantial fluctuations in product revenue from quarter-to-quarter and from 
year-to-year because a single order for our ERDs by a large EPC firm for a particular plant may represent significant revenue. 
In addition, historically our EPC customers tend to order a significant amount of equipment for delivery in the fourth quarter, 
and as a consequence, a significant portion of our annual sales typically occur during the fourth quarter. 

We do not currently have enough history to determine seasonal revenue patterns within our Oil & Gas Segment. 

Intellectual Property 

We seek patent protection for new technologies, inventions, and improvements that are likely to be incorporated into our 
solutions. We rely on patents, trade secret laws, and contractual safeguards to protect the proprietary tooling, processing 
techniques, and other know-how used in the production of our solutions. We have a robust intellectual property portfolio 
consisting of U.S. and International issued patents as well as pending patent applications.  

We have registered the following trademarks with the United States Patent and Trademark office: “ERI,” “PX,” “PX 
Pressure Exchanger,” “Pressure Exchanger,” the Energy Recovery logo, “ERI Energy Recovery, Inc.,” “Making Desalination 
Affordable,” “AT,” “AquaBold,” “VorTeq,” “IsoBoost,” and “IsoGen.” We have also applied for and received registrations 
in international trademark offices.  

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In July 2015, the U.S. parent company transferred our Oil & Gas Segment intellectual property via platform license 

agreements to ERI Energy Recovery Holdings Ireland Limited. 

Employees  

As of December 31, 2016, we had 120 employees: 40 in manufacturing; 30 in corporate services and management; 28 
in sales, service, and marketing; and 22 in engineering and research and development. Fourteen of these employees were 
located outside of the United States. We also engage a relatively small number of independent contractors, primarily as sales 
agents worldwide. We have not experienced any work stoppages, and our employees are not unionized. 

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Item 1A — Risk Factors 

The following discussion sets forth what management currently believes could be the most significant risks and uncertainties 
that could impact our businesses, results of operations, and financial condition. Other risks and uncertainties, including those 
not currently known to the Company or its management, could also negatively impact our businesses, results of operations, 
and financial conditions. Accordingly, the following should not be considered a complete discussion of all of the risks and 
uncertainties the Company may face. We may amend or supplement these risk factors from time to time in other reports we 
file with the Securities and Exchange Commission (“SEC”). 

Risk Related to our Water Segment 

●  Our Water Segment depends on the construction of new desalination plants for revenue, and as a result, our operating
results have experienced, and may continue to experience, significant variability due to volatility in capital spending,
availability of project financing, and other factors affecting the water desalination industry. 

We  currently  derive  the  majority  of  our  revenue  from  sales  of  products  and  services  used  in  desalination  plants  for 
municipalities,  hotels,  mobile  containerized  desalination  solutions,  resorts,  and  agricultural  operations  in  dry  or  drought-
ridden regions of the world. The demand for our Water Segment products may decrease if the construction of desalination 
plants declines for political, economic, or other factors, especially in these dry or drought-ridden regions. Other factors that 
could affect the number and capacity of desalination plants built or the timing of their completion include the availability of 
required  engineering  and  design  resources;  a  weak  global  economy;  shortage  in  the  supply  of  credit  and  other  forms  of 
financing;  changes  in  government  regulation,  permitting  requirements,  or  priorities;  and  reduced  capital  spending  for 
desalination. Each of these factors could result in reduced or uneven demand for our Water Segment products. Pronounced 
variability or delays in the construction of desalination plants or reductions in spending for desalination, could negatively 
impact our Water Segment sales and revenue, which in turn could have an adverse effect on our entire business, financial 
condition, or results of operations and make it difficult for us to accurately forecast our future sales and revenue.  

●  Our Water Segment faces competition from a number of companies that offer competing energy recovery and pump
solutions. If any one of these companies produces superior technology or offers more cost-effective products, our 
competitive position in the market could be harmed and our profits may decline. 

The  market  for  ERD  and  pumps  for  desalination  plants  is  competitive  and  evolving.  We  expect  competition,  especially 
competition on price, to persist and intensify as the desalination market grows and new competitors enter the market. Some 
of our current and potential competitors may have significantly greater financial, technical, marketing, and other resources; 
longer operating histories; or greater name recognition. They may also have more extensive products and product lines that 
would enable them to offer multi-product or packaged solutions as well as competing products at lower prices or with other 
more favorable terms and conditions. As a result, our ability to sustain our market share may be adversely impacted, which 
would affect our business, operating results, and financial condition. In addition, if one of our competitors were to merge or 
partner  with  another  company,  the  change  in  the  competitive  landscape  could  adversely  affect  our  continuing  ability  to 
compete effectively. 

● 

If we are unable to collect unbilled receivables, which are caused in part by holdback provisions, our operating results
could be adversely affected. 

Our  contracts  with  large  engineering,  procurement,  and  construction  firms  generally  contain  holdback  provisions  that 
typically delay final installment payments for our products by up to twenty-four (24) months, after the product has been 
shipped  and  revenue  has  been  recognized.  Generally  10%  or  less  of  the  revenue  we  recognize  pursuant  to  our  customer 
contracts is subject to such holdback provisions and is accounted for as unbilled receivables. Such holdbacks may result in 
relatively high unbilled receivables. If we are unable to collect these performance holdbacks, our results of operations would 
be adversely affected.  

●  We depend on a limited number of suppliers for some of our components. If our suppliers are not able to meet our

demand and/or requirements, our business could be harmed. 

We rely on a limited number of suppliers for vessel housings, stainless steel ports, alumina powder, and tungsten carbide for 
our portfolio of PX ERDs and stainless steel castings and components for our turbochargers and pumps. Our reliance on a 
limited  number  of  manufacturers  for  these  supplies  involves  a  number  of  risks,  including  reduced  control  over  delivery 
schedules, quality assurance, manufacturing yields, production costs, and lack of guaranteed production capacity or product 
supply. We do not have long-term supply agreements with these suppliers but secure these supplies on a purchase order basis. 
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Our suppliers have no obligation to supply products to us for any specific period, in any specific quantity, or at any specific 
price, except as set forth in a particular purchase order. Our requirements may represent a small portion of the total production 
capacities  of  these  suppliers,  and  our  suppliers  may  reallocate  capacity  to  other  customers,  even  during  periods  of  high 
demand for our products. We have in the past experienced, and may in the future experience, product quality issues and 
delivery delays with our suppliers due to factors such as high industry demand or the inability of our vendors to consistently 
meet our quality or delivery requirements. If our suppliers were to cancel or materially change their commitments to us or 
fail to meet quality or delivery requirements needed to satisfy customer orders for our products, we could lose time-sensitive 
customer orders, be unable to develop or sell our products cost-effectively or on a timely basis, if at all, and have significantly 
decreased revenue, which could harm our business, operating results, and financial condition. We may qualify additional 
suppliers in the future, which would require time and resources. If we do not qualify additional suppliers, we may be exposed 
to increased risk of capacity shortages due to our dependence on current suppliers. 

Risk Related to our Oil & Gas Segment 

●  We may not be able to successfully commercialize the VorTeq.  

In October 2015, we entered into the VorTeq License Agreement with the VorTeq Licensee which provides the VorTeq 
Licensee with exclusive worldwide rights to our VorTeq technology for hydraulic fracturing onshore applications. Once the 
VorTeq  is  commercialized,  the  VorTeq  Licensee  will  begin  paying  ongoing  recurring  royalty  fees  to  us  for  the  VorTeq 
technology. In order to commercialize the VorTeq, the VorTeq License Agreement provides, among other things, that we 
successfully meet certain specified milestones against key performance indicators set forth in the license agreement. The 
VorTeq is a relatively new technology and the hydraulic fracturing process is extremely complex which presents a wide range 
of technological challenges for us. If we are unable to successfully solve these challenges and, as a result, fail to meet the 
milestones, we may not be able to successfully commercialize the VorTeq. In that circumstance, we will not receive any 
royalty payments from the VorTeq Licensee, which could have an adverse effect on our entire business, financial condition, 
or results of operation.  

● 

If the VorTeq Licensee fails to adopt the VorTeq, for any reason, we may not receive royalty payments or be able to
successfully commercialize the VorTeq. 

The successful commercialization of the VorTeq depends heavily on the VorTeq Licensee’s support and ultimate adoption 
of the technology. If the VorTeq Licensee fails to adopt the VorTeq, for any reason, we may not be able to successfully 
commercialize the VorTeq with the VorTeq Licensee and consequently, we may not receive any royalties under the VorTeq 
License Agreement. In addition, we may not be able to find a suitable replacement for the VorTeq Licensee or be able to 
negotiate royalties similar to those contained in the VorTeq License Agreement or to commercialize the VorTeq at all. Failure 
to commercialize the VorTeq could have an adverse effect on our entire business, financial condition, or results of operation. 

●  We  may  not  meet  the  key  performance  indicators  necessary  to  meet  the  two  milestones  in  the  VorTeq  License

Agreement. 

The VorTeq License Agreement calls for certain milestone key performance indicators that if met will result in payments to 
the Company of $25 million for each of two milestones. Achievement of these milestones is uncertain, and while we believe 
we can meet the milestones, if we are unable to do so, the milestone payments will be delayed until such time as the milestones 
are met or not earned and received at all. Failure to meet said milestones may also jeopardize commercialization and the rate 
of adoption of our VorTeq. 

●  Our  Oil  &  Gas  Segment  may  be  impacted  by  prolonged  deflation  in  global  oil  prices  which  may  cause  delays  or
cancellations of projects by Oil & Gas Segment customers, negatively affecting the rate of our market penetration and
consequently our revenue and profitability. 

A deflationary oil environment such as the one experienced over the last few years may delay and even stall adoption and 
deployment of our products within our Oil & Gas Segment including but not limited to the VorTeq as licensed for onshore 
applications by the VorTeq Licensee. Emerging market economies, those dependent on commodity exports, and especially 
those  for  whom  oil  exports  make  up  a  significant  percent  of  total  exports,  may  be  unable  to  retrofit  or  expand  their  oil 
exploration,  production,  and  gas  processing  infrastructure  thus  negatively  impacting  our  addressable  market  and  future 
revenue. Additionally, oil price deflation may continue to lead to widespread liquidity and insolvency issues for exploration, 
production,  and  processing  customers,  which  may  negatively  affect  our  addressable  markets  and  therefore  our  financial 
performance.  

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●  Within our Oil & Gas Segment, the use of the percentage-of-completion method of accounting for the IsoBoost and
IsoGen products requires us to make estimates and judgments, which are subject to an inherent degree of uncertainty
and which may differ from actual results. 

The IsoBoost and IsoGen systems are highly engineered, customized solutions that are designed and manufactured over an 
extended period of time and are built specifically to meet a customer’s specifications. It is the Company’s position that the 
percentage-of-completion  method  of  accounting  is  appropriate  for  the  IsoBoost  and  IsoGen  systems  given  the  facts  and 
circumstances  of  these  projects.  This  methodology  requires  the  application  of  significant  judgment  by  management  in 
selecting the appropriate assumptions for calculating revenue and costs. Revenue and profits are recognized over the life of 
a project based on costs incurred to date compared to total estimated project costs. Revisions to revenues and profits are made 
once amounts are known and can be reasonably estimated. In addition, percentage-of-completion revenue may vary from 
quarter to quarter while a project is being completed due to accounting requirements. Given the uncertainties in accurately 
estimating the costs of projects, as well as providing reliable estimates to completion, it is possible for actual amounts to vary 
significantly  from  estimates  previously  made,  which  may  result  in  the  reversal  of  revenues  and  gross  profit  previously 
recognized and publicly reported.  

Risk Related to our Entire Business 

●  Our diversification into new fluid flow markets, such as oil & gas, may not be successful  

We have made a substantial investment in research, development, and sales to execute on our diversification strategy into 
fluid flow markets such as oil & gas and chemical processing. While we see diversification as core to our growth strategy, 
there is no guarantee that we will be successful in our efforts. Our model for growth is based on our ability to initiate and 
embrace disruptive technology trends, to enter new markets, both in terms of geographies and product areas, and to drive 
broad adoption of the products and services that we develop and market. Any inability to execute this model for growth could 
damage our reputation, limit our growth, and negatively affect our operation results. For example, while we believe that our 
products will enable gas processing plant operators to operate at a high level of energy efficiency with minimal downtime, 
we may be subject to warranty claims if customers of these offerings experience significant downtimes or failures for which 
our warranty reserves may be inadequate given the lack of historical failure rates associated with new product introductions. 
We also could be subject to damage claims based on our products against which we may not be able to properly insure. In 
addition,  profitability,  if  any,  in  new  industrial  verticals  may  be  lower  than  in  our  Water  Segment,  and  we  may  not  be 
sufficiently successful in our diversification efforts to recoup investments.  

●  Our operating results may fluctuate significantly, making our future operating results difficult to predict and causing

our operating results to fall below expectations. 

Our operating results may fluctuate due to a variety of factors, many of which are outside of our control. 

We  have  experienced  significant  fluctuations  in  revenue  from  quarter-to-quarter  and  year-to-year,  and  we  expect  such 
fluctuations to continue. In addition, in the past, customer buying patterns led to a significant portion of our sales occurring 
in the fourth quarter. This presents the risk that delays, cancellations, or other adverse events in the fourth quarter could have 
a substantial negative impact on annual results. As a result, comparing our operating results on a period-to-period basis may 
not be meaningful. Since it is difficult for us to anticipate our future results, in the event our revenue or operating results fall 
below the expectations of investors or securities analysts, our stock price may decline. 

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●  Our sales cycles can be long and unpredictable, and our sales efforts require considerable time and expense. As a
result, our sales are difficult to predict and may vary substantially from quarter to quarter, which may cause our
operating results to fluctuate. 

Our sales efforts involve substantial education of our current and prospective customers about the use and benefits of our 
energy  recovery  products.  This  education  process  can  be  time-consuming  and  typically  involves  a  significant  product 
evaluation process which is particularly pronounced when dealing with product introduction into new fluid flow industrial 
verticals. In our Water Segment, the sales cycle for our OEM customers, which are involved with smaller desalination plants, 
averages one (1) to twelve (12) months. The Water Segment sales cycle for our international engineering, procurement, and 
construction firm customers, which are involved with larger desalination plants, ranges from sixteen (16) to thirty-six (36) 
months. In our Oil & Gas Segment, experience indicates that sales efforts are prolonged due in part to customers’ reluctance 
to accept new technology, procurement processes, plant turnaround dates, and budgetary constraints. The sales cycle for our 
Oil  &  Gas  Segment  customers  ranges  from  16  to  36  months.  These  long  sales  cycles  make  quarter-by-quarter  revenue 
predictions difficult and results in our expending significant resources well in advance of orders for our products. 

●  Our business entails  significant  costs  that are  fixed or  difficult  to reduce  in  the short  term  while demand  for our

products is variable and subject to fluctuation, which may adversely affect our operating results. 

Our business requires investments in facilities, equipment, research and development, and training that are either fixed or 
difficult to reduce or scale in the short term. At the same time, the market for our products is variable and has experienced 
downturns  due  to  factors  such  as  economic  recessions,  increased  precipitation,  uncertain  global  financial  markets,  and 
political changes, many of which are outside of our control. During periods of reduced product demand, we may experience 
higher relative costs and excess manufacturing capacity, resulting in high overhead and lower gross profit margins while 
causing cash flow and profitability to decline. Similarly, although we believe that our existing manufacturing facilities are 
capable of meeting current demand and demand for the foreseeable future, the continued success of our business depends on 
our ability to expand our manufacturing, research and development, and testing facilities to meet market needs. If we are 
unable to respond timely to  an increase in demand, our revenue, gross profit margin, net income, and cash flow may be 
adversely affected. 

●  Parts of our inventory may become excess or obsolete, which would increase our cost of revenues. 

Inventory of raw materials, parts, components, work in-process, or finished products may accumulate, and we may encounter 
losses due to a variety of factors, including technological change in the water desalination and oil & gas industries that result 
in product changes; long delays in shipment of our products or order cancellations; our need to order raw materials that have 
long  lead  times  and  our  inability  to  estimate  exact  amounts  and  types  of  items  needed,  especially  with  regard  to  the 
configuration  of  our  high-efficiency  pumps  and  IsoBoost  and  IsoGen  systems;  and  cost  reduction  initiatives  resulting  in 
component changes within the products. 

In addition, we may from time to time purchase more inventory than is immediately required in order to shorten our delivery 
time in case of an anticipated increase in demand for our products. If we are unable to forecast demand for our products with 
a reasonable degree of certainty and our actual orders from our customers are lower than these forecasts, we may accumulate 
excess inventory that we may be required to write off, and our business, financial condition, and results of operations could 
be adversely affected. 

●  We  are  subject  to  risks related  to product defects,  which  could  lead  to  warranty  claims  in  excess of  our  warranty

provision or result in a significant or a large number of warranty or other claims in any given year. 

We provide a warranty for certain products for a period of eighteen (18) to thirty (30) months and provide up to a five-year 
warranty  for  the  ceramic  components  of  our  PX-branded  products.  We  test  our  products  in  our  manufacturing  facilities 
through a variety of means; however, there can be no assurance that our testing will reveal latent defects in our products, 
which may not become apparent until after the products have been sold into the market. The testing may not replicate the 
harsh, corrosive, and varied conditions of the desalination and other plants in which they are installed. It is also possible that 
components purchased from our suppliers could break down under those conditions. Certain components of our turbochargers 
and pumps are custom-made and may not scale or perform as required in production environments. Accordingly, there is a 
risk  that  we  may  have  significant  warranty  claims  or  breach  supply  agreements  due  to  product  defects.  We  may  incur 
additional cost of revenue if our warranty provisions are not sufficient to cover the actual cost of resolving issues related to 
defects  in  our  products.  If  these  additional  expenses  are  significant,  they  could  adversely  affect  our  business,  financial 
condition, and results of operations. 

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●  Business interruptions may damage our facilities or those of our suppliers. 

Our operations and those of our suppliers may be vulnerable to interruption by fire, earthquake, flood, and other natural 
disasters, as well as power loss, telecommunications failure, and other events beyond our control. Our facilities in California 
are located near major earthquake faults and have experienced earthquakes in the past. If a natural disaster occurs, our ability 
to  conduct  our  operations  could  be  seriously  impaired,  which  could  harm  our  business,  financial  condition,  results  of 
operations, and cash flows. We cannot be sure that the insurance we maintain against general business interruptions will be 
adequate to cover all of our losses. 

● 

If we are unable to protect our technology or enforce our intellectual property rights, our competitive position could
be harmed, and we could be required to incur significant expenses to enforce our rights. 

Our competitive position depends on our ability to establish and maintain proprietary rights in our technology and to protect 
our  technology  from  copying  by  others.  We  rely  on  trade  secret,  patent,  copyright,  and  trademark  laws,  as  well  as 
confidentiality agreements with employees and third parties, all of which may offer only limited protection. We hold a number 
of U.S. and counterpart international patents, and when their terms expire, we could become more vulnerable to increased 
competition.  The  protection of our  intellectual  property  in  some  countries  may  be  limited. While  we have  expanded  our 
portfolio of patent applications, we do not know whether any of our pending patent applications will result in the issuance of 
patents or whether the examination process will require us to narrow our claims, and even if patents are issued, they may be 
contested, circumvented, or invalidated. Moreover, while we believe our issued patents and patent pending applications are 
essential to the protection of our technology, the rights granted under any of our issued patents or patents that may be issued 
in  the  future  may  not  provide  us  with  proprietary  protection  or  competitive  advantages,  and  as  with  any  technology, 
competitors may be able to develop similar or superior technologies now or in the future. In addition, our granted patents 
may not prevent misappropriation of our technology, particularly in foreign countries where intellectual property laws may 
not protect our proprietary rights as fully as those in the United States. This may render our patents impaired or useless and 
ultimately  expose  us  to  currently  unanticipated  competition.  Protecting  against  the  unauthorized  use  of  our  products, 
trademarks, and other proprietary rights is expensive, difficult, and in some cases, impossible. Litigation may be necessary 
in the future to enforce or defend our intellectual property rights or to determine the validity and scope of the proprietary 
rights of others. Intellectual property litigation could result in substantial costs and diversion of management resources, either 
of which could harm our business. 

●  Claims by others that we infringe their proprietary rights could harm our business. 

Third parties could claim that our technology infringes their intellectual property rights. In addition, we or our customers 
may be contacted by third parties suggesting that we obtain a license to certain of their intellectual property rights that they 
may believe we are infringing. We expect that infringement claims against us may increase as the number of products and 
competitors in our market increases and overlaps occur. In addition, to the extent that we gain greater visibility, we believe 
that we will face a higher risk of being the subject of intellectual property infringement claims. Any claim of infringement 
by a third party, even those without merit, could cause us to incur substantial costs defending against the claim and could 
distract management from our business. Furthermore, a party making such a claim, if successful, could secure a judgment 
that requires us to pay substantial damages. A judgment against us could also include an injunction or other court order that 
could prevent us from offering our products. In addition, we might be required to seek a license for the use of such intellectual 
property,  which  may  not  be  available  on  commercially  reasonable  terms,  or  at  all.  Alternatively,  we  may  be  required  to 
develop non-infringing technology, which could require significant effort and expense and may ultimately not be successful. 
Any  of  these  events  could  seriously  harm  our  business.  Third  parties  may  also  assert  infringement  claims  against  our 
customers. Because we generally indemnify our customers if our products infringe the proprietary rights of third parties, any 
such claims would require us to initiate or defend protracted and costly litigation on their behalf in one or more jurisdictions, 
regardless of the merits of these claims. If any of these claims succeed, we may be forced to pay damages on behalf of our 
customers. 

●  We are currently involved in legal proceedings, and may be subject to additional future legal proceedings, that may

result in material adverse outcomes.  

In addition to intellectual property litigation risks discussed above, we are presently involved, and may become involved in 
the future, in various commercial and other disputes as well as related claims and legal proceedings that arise from time to 
time in the course of our business. See Note 9 to the Consolidated Financial Statements in Part II, Item 8 of this Form 10-K 
for  information  about  certain  legal  proceedings  in  which  we  are  involved.  Our  current  legal  proceedings  and  any  future 
lawsuits to which we may become a party are and will likely be expensive and time consuming to investigate, defend and 
resolve,  and  will  divert  our  management’s  attention.  Any  litigation  to  which  we  are  a  party  may  result  in  an  onerous  or 
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unfavorable judgment that may not be reversed upon appeal or in payments of substantial monetary damages or fines, or we 
may decide to settle lawsuits on similarly unfavorable terms, which could have an adverse effect on our business, financial 
condition, or results of operations. 

●  Our global operations expose us to risks and challenges associated with conducting business internationally, and our 
results of operations may be adversely affected by our efforts to comply with the laws of other countries, as well as
U.S. laws which apply to international operations, such as the Foreign Corrupt Practices Act (FCPA) and U.S. export
control laws. 

We operate on a global basis with offices or activities in Europe, Africa, Asia, South America, and North America. We face 
risks inherent in conducting business internationally, including compliance with international and U.S. laws and regulations 
that apply to our international operations. These laws and regulations include tax laws, anti-competition regulations, import 
and trade restrictions, export control laws, and laws which prohibit corrupt payments to governmental officials or certain 
payments or remunerations to customers, including the U.S. Foreign Corrupt Practices Act (FCPA) or other anti-corruption 
laws that have recently been the subject of a substantial increase in global enforcement. Many of our products are subject to 
U.S. export law restrictions that limit the destinations and types of customers to which our products may be sold, or require 
an export license in connection with sales outside the United States. Given the high level of complexity of these laws, there 
is a risk that some provisions may be inadvertently or intentionally breached, for example through fraudulent or negligent 
behavior of individual employees, our failure to comply with certain formal documentation requirements, or otherwise. Also, 
we may be held liable for actions taken by our local dealers and partners. Violations of these laws and regulations could result 
in fines, criminal sanctions against us, our officers or our employees, and prohibitions or conditions on the conduct of our 
business. Any such violations could include prohibitions or conditions on our ability to offer our products in one or more 
countries and could materially damage our reputation, our brand, our business, and our operating results. 

In addition, we operate in many parts of the world that have experienced significant governmental corruption to some degree 
and, in certain circumstances, strict compliance with anti-bribery laws may conflict with local customs and practices. We 
may be subject to competitive disadvantages to the extent that our competitors are able to secure business, licenses, or other 
preferential  treatment  by  making  payments  to  government  officials  and  others  in  positions  of  influence  or  through  other 
methods that relevant law and regulations prohibit us from using. Our success depends, in part, on our ability to anticipate 
these risks and manage these difficulties. 

These factors or any combination of these factors may adversely affect our revenue or our overall financial performance. 

●  Significant developments stemming from the recent U.S. presidential election could have a material adverse effect on

us. 

The current administration has called for substantial change to fiscal and tax policies, regulatory oversight of businesses, and 
greater restrictions on free trade including significant increases on tariffs on goods imported into the United States, including 
from  China.  Proposals  espoused  by  the  current  administration  may  result  in  changes  to  social,  political,  regulatory,  and 
economic conditions in the United States or in laws and policies affecting the development and investment in countries where 
we currently conduct business, sell our products, or procure our raw materials. In addition, these changes could result in 
negative sentiments towards the United States among non-U.S. customers. We cannot predict the impact, if any, of these 
changes to our business. However, it is possible that these changes could adversely affect our business due to the substantial 
exposure we have to international markets which could have an adverse effect on our business, financial condition, or results 
of operations. 

●  Regulations related to conflict minerals could adversely impact our business.  

The  Dodd-Frank  Wall  Street  Reform  and  Consumer  Protection  Act  contains  provisions  to  improve  transparency  and 
accountability  concerning  the  supply  of  certain  minerals,  known  as  conflict  minerals,  originating  from  the  Democratic 
Republic of Congo (“DRC”) and adjoining countries. As a result, in August 2012, the SEC adopted annual disclosure and 
reporting requirements for those companies who use conflict minerals mined from the DRC and adjoining countries in their 
products. Based on our purchasing policy and supplier selection, it is considered unlikely that any conflict minerals are used 
in  the  manufacturing  of  our  products.  Nevertheless,  we  are  continuing  reasonable  country  of  origin  inquiry  and  have 
implemented a program of due diligence on the source and chain of custody for conflict minerals. 

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There  are  costs  associated  with  complying  with  these  disclosure  requirements,  including  loss  of  customers  and  potential 
changes to products, processes, or sources of supply as a consequence of our verification activities. The implementation of 
these rules could adversely affect the sourcing, supply, and pricing of materials used in our products. As there may be only a 
limited number of suppliers offering “conflict free” minerals, we cannot be sure that we will be able to obtain necessary 
materials from such suppliers in sufficient quantities or at competitive prices. Also, we may face reputational challenges if 
we determine that certain of our products contain minerals not determined to be conflict-free or if we are unable to sufficiently 
verify the origins for all conflict minerals used in our products through the procedures we have implemented. 

●  We may have risks associated with security of our information technology systems. 

We make significant efforts to maintain the security and integrity of our information technology systems and data. Despite 
significant efforts to create security barriers to such systems, it is virtually impossible for us to entirely mitigate this risk. 
There is a risk of industrial espionage, cyber-attacks, misuse or theft of information or assets, or damage to assets by people 
who may gain unauthorized access to our facilities, systems, or information. Such cybersecurity breaches, misuse, or other 
disruptions  could  lead  to  the  disclosure  of  confidential  information,  improper  usage  and  distribution  of  our  intellectual 
property, theft, manipulation and destruction of private and proprietary data, and production downtimes. 

Although we actively employ measures to prevent unauthorized access to our information systems, preventing unauthorized 
use or infringement of our rights is inherently difficult. These events could adversely affect our financial results and any legal 
action in connection with any such cybersecurity breach could be costly and time-consuming and may divert management's 
attention and adversely affect the market's perception of us and our products. 

●  We may have risks associated with our new international tax optimization structure. 

In 2015, the Company implemented a new international tax optimization structure. Subsidiaries were established in Ireland 
and the Company transferred our Oil & Gas Segment intellectual property via platform licenses to ERI Energy Recovery 
Holdings Ireland Limited. The Company has undertaken extensive due diligence, implemented and continues to implement 
manufacturing, research and development, and sales operations to create Irish substance, and has conferred with tax experts 
to ensure that uncertain tax positions are unlikely. It is possible that the new international tax structure could be examined by 
the Internal Revenue Service in the U.S. and/or the Tax Authorities in Ireland, and it is possible that such an examination 
could result in an unfavorable impact on the Company. 

● 

If we need additional capital to fund future growth, it may not be available on favorable terms, or at all. 

Our primary source of cash historically has been customer payments for our products and services and proceeds from the 
issuance of common stock. This has funded our operations and capital expenditures. We may require additional capital from 
equity or debt financing in the future to fund our operations or respond to competitive pressures or strategic opportunities, 
such as a potential acquisition or the expansion of operations. We may not be able to secure such additional financing on 
favorable terms or at all. The terms of additional financing may place limits on our financial and operational flexibility. If we 
raise  additional  funds  through  further  issuances  of  equity,  convertible  debt  securities,  or  other  securities  convertible  into 
equity, our existing stockholders could suffer significant dilution in their percentage ownership of our company, and any new 
securities  that  we  issue  could  have  rights,  preferences,  or  privileges  senior  to  those  of  existing  or  future  holders  of  our 
common stock. If we are unable to obtain necessary financing on terms satisfactory to us, if and when we require it, our 
ability to grow or support our business and to respond to business challenges or opportunities could be significantly limited. 

●  We may seek to expand through acquisitions of and investments in other businesses, technologies, and assets. These

acquisition activities may be unsuccessful or divert management’s attention.  

We may consider strategic and complementary acquisitions of and investments in other businesses, technologies, and assets, 
and such acquisitions or investments are subject to risks that could affect our business, including risks related to: 

● 

the necessity of coordinating geographically disparate organizations; 

● 

implementing common systems and controls; 

● 

integrating personnel with diverse business and cultural backgrounds; 

● 

integrating acquired research and manufacturing facilities, technology and products; 

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● 

combining different corporate cultures and legal systems; 

●  unanticipated expenses related to integration, including technical and operational integration;  

● 

increased costs and unanticipated liabilities, including with respect to registration, environmental, health and safety
matters, that may affect sales and operating results;  

● 

retaining key employees; 

●  obtaining required government and third-party approvals; 

● 

legal limitations in new jurisdictions; 

● 

installing effective internal controls and audit procedures; 

● 

issuing common stock that could dilute the interests of our existing stockholders; 

● 

spending cash and incurring debt; 

● 

assuming contingent liabilities; and 

● 

creating additional expenses. 

We may not be able to identify opportunities or complete transactions on commercially reasonable terms, or at all, or actually 
realize any anticipated benefits from such acquisitions or investments. Similarly, we may not be able to obtain financing for 
acquisitions or investments on attractive terms. If we do complete acquisitions, we cannot ensure that they will ultimately 
strengthen our competitive or financial position or that they will not be viewed negatively by customers, financial markets, 
investors, or the media. In addition, the success of any acquisitions or investments also will depend, in part, on our ability to 
integrate the acquisition or investment with our existing operations. 

● 

Insiders and principal stockholders will likely have significant influence over matters requiring stockholder approval.

Our directors, executive officers, and other principal stockholders beneficially own, in the aggregate, a substantial amount of 
our  outstanding  common  stock.  These  stockholders  could  likely  have  significant  influence  over  all  matters  requiring 
stockholder approval, including the election of directors and approval of significant corporate transactions such as a merger 
or other sale of our company or its assets. 

●  The market price of our common stock may continue to be volatile. 

The market price of our common stock has been, and is likely to continue to be, volatile and subject to fluctuations. Changes 
in the stock market generally or as it concerns our industry, as well as geopolitical, economic, and business factors unrelated 
to us, may also affect our stock price. Significant declines in the market price of our common stock or failure of the market 
price to increase could harm our ability to recruit and retain key employees, reduce our access to debt or equity capital, and 
otherwise harm our business or financial condition. In addition, we may not be able to use our common stock effectively as 
consideration in connection with any future acquisitions. 

●  Anti-takeover provisions in our charter documents and under Delaware law could discourage, delay, or prevent a

change in control of our company and may affect the trading price of our common stock. 

Provisions in our amended and restated certificate of incorporation and bylaws may have the effect of delaying or preventing 
a change of control or changes in our management. Our amended and restated certificate of incorporation and amended and 
restated bylaws include provisions that: 

● 

● 

authorize our Board of Directors to issue, without further action by the stockholders, up to 10,000,000 shares of
undesignated preferred stock; 

require that any action to be taken by our stockholders be effected at a duly called annual or special meeting and not
by written consent; 

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● 

● 

● 

specify that special meetings of our stockholders can be called only by our Board of Directors, the chairman of the
board, the chief executive officer, or the president; 

establish  an  advance  notice  procedure  for  stockholder  approvals  to  be  brought  before  an  annual  meeting  of  our
stockholders, including proposed nominations of persons for election to our Board of Directors; 

establish that our Board of Directors is divided into three classes, Class I, Class II, and Class III, with each class
serving staggered terms; 

●  provide that our directors may be removed only for cause; 

●  provide that vacancies on our Board of Directors may be filled only by a majority vote of directors then in office,

even though less than a quorum; 

● 

specify that no stockholder is permitted to cumulate votes at any election of directors; and 

● 

require a super-majority of votes to amend certain of the above mentioned provisions. 

In addition, we are subject to the provisions of Section 203 of the Delaware General Corporation Law regulating corporate 
takeovers. Section 203 generally prohibits us from engaging in a business combination with an interested stockholder subject 
to certain exceptions. 

Item 1B — Unresolved Staff Comments 

None 

Item 2 — Properties 

We lease approximately 170,000 square feet of space in San Leandro, California for product manufacturing, research 
and development, and executive headquarters under a lease that expires in November of 2019. We believe that this facility 
will be adequate for our purposes for the foreseeable future. Additionally, we lease offices near Dublin, Ireland; Dubai, United 
Arab Emirates; Shanghai, Peoples Republic of China; and Houston, Texas. 

Item 3 — Legal Proceedings 

See Note 9 — Commitments and Contingencies to the Consolidated Financial Statements in Part II, Item 8 of this Form 
10-K Item 8 of this report, under the heading “Litigation,” which is incorporated by reference into this Item 3, for a description 
of the lawsuits pending against us. 

Item 4 — Mine Safety Disclosures 

Not applicable. 

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PART II 

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

Market Information 

Our common stock is quoted on the NASDAQ Stock Market under the symbol “ERII.” 

The following table sets forth the high and low intra-day sales prices of our common stock for the periods indicated. 

First Quarter .........................................................................   $ 
Second Quarter .....................................................................   $ 
Third Quarter ........................................................................   $ 
Fourth Quarter ......................................................................   $ 

10.82    $ 
13.35    $ 
16.67    $ 
16.30    $ 

5.28     $ 
7.77     $ 
8.35     $ 
8.53     $ 

5.37    $ 
3.71    $ 
3.07    $ 
9.50    $ 

2.49  
2.28  
2.07  
2.09  

2016 

2015 

High 

Low 

High 

Low 

Stockholders 

As  of  February  28,  2017,  there  were  approximately  thirty-two  (32)  stockholders  of  record  of  our  common  stock  as 
reported by our transfer agent, one of which is Cede & Co., a nominee for Depository Trust Company (DTC). All of the 
shares of common stock held by brokerage firms, banks, and other financial institutions as nominees for beneficial owners 
are  deposited  into  participant  accounts  at  DTC  and  are  therefore  considered  to  be  held  of  record  by  Cede  &  Co.  as  one 
stockholder. 

Dividend Policy 

We have never declared or paid any dividends on our common stock, and we do not currently intend to pay any dividends 
on our common stock for the foreseeable future. Any future determination to pay dividends on our common stock will be, 
subject to applicable law, at the discretion of our Board of Directors, and will depend upon, among other factors, our results 
of operations, financial condition, capital requirements, and contractual restrictions in loan or other agreements. 

Stock Repurchase Program 

In  January  2016,  our  Board  of  Directors  authorized  a  stock  repurchase  program  under  which  the  Company,  at  the 
discretion of management, could repurchase up to $6.0 million in aggregate cost of our outstanding common stock through 
June 30, 2016 (the “January Authorization”). In May 2016, our Board of Directors rescinded the January Authorization and 
authorized a new stock repurchase program under which the Company, at the discretion of management, could repurchase 
up to $10.0 million in aggregate cost of our outstanding common stock through October 31, 2016 (the “May Authorization”). 
At  December  31,  2016,  673,700  shares,  at  an  aggregate  cost  of  $4.1  million,  had  been  repurchased  under  the  January 
Authorization and 568,500 shares, at an aggregate cost of $5.3 million, had been repurchased under the May Authorization. 
The May Authorization expired in October 2016 and there was no repurchase authorization in place at December 31, 2016. 

A  stock  repurchase  program  was  not  in  place  during  the  year  ended  December  31,  2015,  therefore  no  shares  were 

repurchased during 2015. 

In February 2014, our Board of Directors authorized a stock repurchase program under which up to three million shares, 
not to exceed $6.0 million in aggregate cost, of our outstanding common stock could be repurchased through December 31, 
2014 at the discretion of management. During the year ended December 31, 2014, 696,853 shares at an aggregate cost of 
$2.8 million were repurchased under this authorization. This 2014 repurchase authorization expired on December 31, 2014. 

Sales of Unregistered Securities 

There  were  no  outstanding  warrants  during  the  year  ended  December  31,  2016.  All  outstanding  warrants  had  been 

exercised as of December 31, 2015. 

During the year ended December 31, 2015, warrants to purchase 200,000 shares of common stock were exercised for 

cash at a price of $1.00 per share. The proceeds received from this exercise totaled $200,000.  

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During  the  year  ended  December  31,  2014,  warrants  to  purchase  450,000  shares  of  common  stock  were  exercised. 
Warrants to purchase 50,000 shares of common stock were exercised for cash at a price of $1.00 per share. The proceeds 
received  from  this  exercise  totaled  $50,000.  Warrants  to  purchase  400,000  shares  of  common  stock  were  exercised  for 
311,111 shares of common stock in lieu of cash proceeds. The remaining 88,889 warrants were cancelled and considered 
payment for the exercise. 

These shares issued pursuant to the warrants were not registered under the Securities Act of 1933, as amended, in reliance 

upon the exemption set forth in Section 4(2) of that Act for transactions not involving a public offering. 

Stock Performance Graph 

The following graph shows the cumulative total stockholder return of an investment of $100 on December 31, 2011 in 
(i)  our  common  stock,  (ii)  common  stock  of  a  selected  group  of  peer  issuers  (“Peer  Group”),  and  (iii)  the  NASDAQ 
Composite  Index.  Cumulative  total  return  assumes  the  reinvestment  of  dividends,  although  dividends  have  never  been 
declared on our stock, and is based on the returns of the component companies weighted according to their capitalizations as 
of  the  end  of  each  quarterly  period.  The  NASDAQ  Composite  Index  tracks  the  aggregate  price  performance  of  equity 
securities traded on the NASDAQ. The Peer Group tracks the weighted average price performance of equity securities of 
seven companies in our industry: Consolidated Water Co. Ltd.; Flowserve Corp.; Hyflux Ltd., Kurita Water Industries Ltd.; 
Pentair PLC; Tetra Tech, Inc.; and The Gorman-Rupp Company. The return of each component issuer of the Peer Group is 
weighted  according  to  the  respective  issuer’s  stock  market  capitalization  at  the  end  of  each  period  for  which  a  return  is 
indicated. Our stock price performance shown in the graph below is not indicative of future stock price performance. 

The following graph and its related information is not “soliciting material,” is not deemed “filed” with the Securities and 
Exchange Commission, and is not to be incorporated by reference into any filing of the Company under the 1933 Securities 
Act  or  1934  Securities  Exchange  Act,  whether  made  before  or  after  the  date  hereof  and  irrespective  of  any  general 
incorporation language contained in such filing. 

COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN * 
Among Energy Recovery Inc., The NASDAQ Composite Index, 
And A Peer Group 

* Graph represents the value of $100 invested on December 31, 2011 in stock or index, including reinvestment of 

dividends as of the fiscal year ending December 31. 

Energy Recovery, Inc. ...................     
NASDAQ Composite Index ..........     
Peer Group ....................................     

   12/31/11       12/31/12       12/31/13       12/31/14       12/31/15       12/31/16    
401.16  
216.54  
150.14  

100.00      
100.00      
100.00      

204.26      
188.69      
160.70      

274.03      
200.32      
126.75      

131.78      
116.41      
129.13      

215.12      
165.47       
189.14      

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Item 6 — Selected Financial Data 

The  following  selected  financial  data  should  be  read  in  conjunction  with  “Item  7  –  Management’s  Discussion  and 
Analysis of Financial Condition and Results of Operations” and “Item 8 – Financial Statements and Supplementary Data” 
included in this Report on Form 10-K. 

2016 

Years Ended December 31, 
2014 

2013 

2015 

2012 

Consolidated Statements of Operations Data:        
Product revenue ....................................................   $
Product cost of revenue ........................................     
Product gross profit ..............................................     

49,715    $ 
17,849      
31,866      

43,671    $
19,111      
24,560      

30,426    $
13,713      
16,713      

43,045    $
17,323      
25,722      

42,632  
22,419  
20,213  

License and development revenue .......................     

5,000      

1,042      

—      

—      

—  

Operating expenses: 

General and administrative ...............................     
Sales and marketing ..........................................     
Research and development ...............................     
Amortization of intangible assets .....................     
Restructuring charges .......................................     
Impairment of intangibles .................................     
Proceeds from litigation settlement ..................     
Total operating expenses ......................................     
Income (loss) from operations ..............................     
Other income (expense): 

Interest expense ................................................     
Other non-operating income (expense), net ......     
Income (loss) before income taxes .......................     
(Benefit from) provision for income taxes ...........     
Net income (loss) .................................................   $

16,626      
9,116      
10,136      
631      
—      
—      
—      
36,509      
357      

(3)     
290      
644      
(390)     
1,034    $ 

19,773      
9,326      
7,659      
635      
—      
—      
—      
37,393      
(11,791)     

(42)     
(139)     
(11,972)     
(334)     
(11,638)   $

14,139      
10,525      
9,690      
842      
—      
—      
—      
35,196      
(18,483)     

—      
69      
(18,414)     
291      
(18,705)   $

15,192      
7,952      
4,361      
921      
184      
—      
—      
28,610      
(2,888)     

—      
109      
(2,779)     
327      
(3,106)   $

15,146  
7,290  
4,774  
1,042  
369  
1,020  
(775) 
28,866  
(8,653) 

(6) 
143  
(8,516) 
(262) 
(8,254) 

Income (loss) per share – basic ............................   $
Income (loss) per share – diluted .........................   $

0.02    $ 
0.02    $ 

(0.22)   $
(0.22)   $

(0.36)   $
(0.36)   $

(0.06)   $
(0.06)   $

(0.16) 
(0.16) 

Number of shares used in per share calculation: 

Basic .................................................................     
Diluted ..............................................................     

52,341      
55,451      

52,151      
52,151      

51,675      
51,675      

51,066      
51,066      

51,452  
51,452  

2016 

2015 

As of December 31, 
2014 

2013 

2012 

Consolidated Balance Sheets Data: 
Cash and cash equivalents ....................................   $
Short-term investments ........................................     
Long-term investments .........................................     
Total assets ...........................................................     
Long-term liabilities .............................................     
Total liabilities .....................................................     
Total stockholders’ equity ....................................     

61,364    $ 
39,073      
—      
149,063      
66,772      
83,930      
65,133      

99,931    $
257      
—      
151,799      
72,116      
88,140      
63,659      

15,501    $
13,072      
267      
85,941      
4,501      
16,023      
69,918      

14,371    $
5,856      
13,694      
101,935      
4,338      
15,020      
86,915      

16,642  
9,497  
4,773  
104,554  
4,317  
17,173  
87,381  

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

The following Management Discussion and Analysis of Financial Condition and Results of Operations is intended to 
help  the  reader  understand  our  results  of  operations  and  financial  condition.  It  should  be  read  in  conjunction  with  the 
Consolidated Financial Statements and related Notes included in “Item 8 – Financial Statements and Supplementary Data” 
in this Report. 

Overview 

Energy Recovery, Inc. (the “Company,” “Energy Recovery,” “our,” “us,” and “we”) is an energy solutions provider to 
industrial  fluid  flow  markets  worldwide.  Our  core  competencies  are  fluid  dynamics  and  advanced  material  science.  Our 
products make industrial processes more operating and capital expenditure efficient. Our solutions convert wasted pressure 
energy into a reusable asset and preserve or eliminate pumping technology in hostile processing environments. Our solutions 
are marketed and sold in fluid flow markets, such as water, oil & gas, and chemical processing, under the trademarks ERI®, 
PX®, Pressure Exchanger®, PX Pressure Exchanger®, AT™, AquaBold™, VorTeq™, IsoBoost®, and IsoGen®. Our solutions 
are owned, manufactured, and/or developed, in whole or in part, in the United States of America, (“U.S.”) and the Republic 
of Ireland. 

Energy  Recovery  was  incorporated  in  Virginia  in  1992,  reincorporated  in  Delaware  in  2001,  and  became  a  public 
company in July 2008. We introduced the initial version of our Pressure Exchanger energy recovery device in early 1997 for 
sea  water  reverse  osmosis  desalination.  In  2009,  we  acquired  Pump  Engineering,  LLC,  which  manufactured  centrifugal 
energy recovery devices, known as turbochargers, as well as high-pressure pumps. In 2012, we introduced the IsoBoost and 
IsoGen products for use in the oil & gas industry. In 2015, we conducted field trials for the VorTeq hydraulic fracturing 
solution (“VorTeq”) also for use in the oil & gas industry for oil field hydraulic fracturing operations and entered into a 
fifteen-year license agreement with Schlumberger Technology Corporation (the “VorTeq Licensee”). In 2016, we received 
our first major purchase order for multiple units of our IsoBoost technology for integration into a major gas processing plant 
to be constructed in the Middle East. 

Our reportable operating segments consist of the Water Segment and the Oil & Gas Segment. These segments are based 
on the industries in which the technology solutions are sold, the type of energy recovery device or other technology sold, and 
the related solution and service. 

Water Segment 

Our  Water  Segment  consists  of  revenues  and  expenses  associated  with  solutions  sold  for  use  in  reverse  osmosis 
desalination. Our Water Segment revenue is principally derived from the sale of energy recovery devices (“ERDs”), however, 
we also derive revenue from the sale of our high-pressure and circulation pumps, which we manufacture and sell in connection 
with our ERDs for use in desalination plants. Additionally, we receive revenue from the sale of spare parts and services, 
including start-up and commissioning services that we provide for our customers. 

With respect to product revenue from our ERDs in our Water Segment, a significant portion of our revenue is typically 
generated by sales to a limited number of large engineering, procurement, and construction (“EPC”) firms, which are involved 
with the design and construction of larger desalination plants. Sales to these firms often involve a long sales cycle, which can 
range from sixteen (16) to thirty-six (36) months. A single large desalination project can generate an order for numerous 
ERDs and generally represents an opportunity for significant revenue. We also sell our devices to many small- to medium-
sized  original  equipment  manufacturers  (“OEM”),  which  commission  smaller  desalination  plants,  order  fewer  ERDs  per 
plant, and have shorter sales cycles. 

We often experience substantial fluctuations in our Water Segment product revenue from quarter-to-quarter and from 
year-to-year because a single order for our ERDs by a large EPC firm for a particular plant may represent significant revenue. 
In addition, historically our EPC customers tend to order a significant amount of equipment for delivery in the fourth quarter, 
and as a consequence, a significant portion of our annual sales typically occurs during that quarter. Normal seasonality trends 
also generally lead to our lowest revenue being in the first quarter of the year. 

A limited number of our customers account for a substantial portion of our product revenue and accounts receivable in 
the Water Segment. Revenue from customers representing 10% or more of product revenue in the Water Segment varies 
from  period  to  period.  For  the  years  ended  December  31,  2016,  2015,  and  2014,  one  Water  Segment  customer  per  year 
accounted  for  approximately  11%,  14%,  and  14%,  respectively,  of  our  total  product  revenue.  See  Note  14  — 

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“Concentrations” in the Notes to the Consolidated Financial Statements in Item 8 of this Form 10-K for further details on 
customer concentration. 

At  December  31,  2016,  one  Water  Segment  customer  accounted  for  13%  of  our  accounts  receivable  and  unbilled 
receivable balance. At December 31, 2015, two Water Segment customers accounted for 26% and 18%, respectively, of our 
accounts  receivable  and  unbilled  receivable  balance.  See Note  14  —  “Concentrations”  in  the Notes  to  the  Consolidated 
Financial Statements in Item 8 of this Form 10-K for further details on customer concentration. 

At  December  31,  2016  and  2015,  no  Water  Segment  vendor  accounted  for  more  than  10%  of  our  accounts  payable 
balance. See Note 14 — “Concentrations” in the Notes to the Consolidated Financial Statements in Item 8 of this Form  
10-K for further details on vendor concentration. 

During  the  years  ended  December  31,  2016,  2015,  and  2014,  most  of  our  Water  Segment  product  revenue  was 
attributable to sales outside of the United States. We expect sales outside of the United States to remain a significant portion 
of our revenue for the foreseeable future. 

Oil & Gas Segment 

Our Oil & Gas Segment consists of revenues and expenses associated with solutions sold or licensed for use in hydraulic 
fracturing,  gas  processing,  and  chemical  processing.  In  the  past  several  years,  we  have  invested  significant  research  and 
development costs to expand our business into pressurized fluid flow industries within the oil & gas industry. 

In 2012, we introduced the IsoBoost and IsoGen products for use in the oil & gas industry. For the years ended December 
31, 2014 and 2015, we recognized Oil & Gas Segment product revenue from the operating lease, subsequent lease buy-out, 
and commissioning services of an IsoGen system. For the year ended December 31, 2015, we also recognized Oil & Gas 
Segment product revenue related to the cancellation fee of a cancelled sales order for an IsoBoost system. 

In 2014, we announced a new product for the hydraulic fracturing industry, the VorTeq. Field trials were initiated for 
the VorTeq in the second quarter of 2015 and completed in December 2015 with the successful delivery of proppant to a well 
located in the Bakken Formation. 

In October 2015, through our subsidiary ERI Energy Recovery Ireland Ltd., we entered into a license agreement with 
the VorTeq Licensee (“VorTeq License Agreement”). The VorTeq License Agreement has a term of fifteen (15) years for 
the  exclusive,  worldwide  right  to  use  our  VorTeq  technology  for  hydraulic  fracturing  onshore  operations.  The  VorTeq 
License Agreement includes $125 million in payments paid in stages: a $75 million upfront, exclusivity fee payment and two 
separate $25 million payments upon successful achievement of two milestone tests. Following product commercialization, 
the VorTeq License Agreement includes recurring royalty payments throughout the fifteen-year term. 

The revenue related to the VorTeq License Agreement exclusivity fee will be recognized pro-ratably over the fifteen-
year agreement. Revenue from each milestone payment will be recognized when the milestone is reached. Revenue from the 
recurring royalty payments will be recognized when earned throughout the term of the agreement. 

In 2016, we received our first major purchase order for multiple units of our IsoBoost technology for integration into a 
major gas processing plant to be constructed in the Middle East and we recognized Oil & Gas Segment product revenue using 
the  percentage-of-completion  method  of  accounting.  For  the  years  ended  December  31,  2016,  we  recognized  Oil  &  Gas 
Segment revenue related to our VorTeq License Agreement and product revenue related to the sale of the IsoBoost systems. 

One customer accounted for 100% of our Oil &Gas Segment license and development revenue for 2016 and 2015, which 
represented 9% and 2% of our total revenue for the years ended December 31, 2016 and 2015, respectively. There was no 
Oil &Gas Segment license and development revenue recognized for 2014. 

While one customer accounted for 100% of our Oil & Gas Segment product revenue for the year ended December 31, 
2016,  no  Oil  &  Gas  Segment  customer  accounted  for  more  than  10%  of  our  total  product  revenue  for  the  years  ended 
December 31, 2016, 2015, and 2014, respectively. See Note 14 – “Concentrations” in the Notes to the Consolidated Financial 
Statements in Item 8 of this Form 10-K for further details on customer concentration. 

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At December 31, 2016, one Oil & Gas Segment customer accounted for 16% of our accounts receivable and unbilled 
receivable balance. At December 31, 2015, no Oil & Gas Segment customer accounted for more than 10% of our accounts 
receivable  and  unbilled  receivable  balance.  See  Note  14  –  “Concentrations”  in  the  Notes  to  the  Consolidated  Financial 
Statements in Item 8 of this Form 10-K for further details on customer concentration. 

At December 31, 2016, one Oil & Gas Segment vendor accounted for 18% of our accounts payable balance. At December 
31,  2015,  no Oil  &  Gas  Segment  vendor accounted for more  than  10%  of our  accounts payable balance.  See Note  14  – 
“Concentrations” in the Notes to the Consolidated Financial Statements in Item 8 of this Form 10-K for further details on 
vendor concentration. 

During  the  years  ended  December  31,  2016,  2015,  and  2014,  all  of  our  Oil  &  Gas  Segment  product  revenue  was 

attributable to sales outside of the United States. 

Critical Accounting Policies and Estimates 

Our  Consolidated  Financial  Statements  are  prepared  in  accordance  with  generally  accepted  accounting  principles 
(“GAAP”) in the United States. These accounting principles require us to make estimates and judgments that can affect the 
reported  amounts of  assets  and  liabilities  as of  the date of  the  Consolidated Financial Statements  as well  as  the reported 
amounts of revenue and expense during the periods presented. We believe that the estimates and judgments upon which we 
rely are reasonable based upon information available to us at the time that we make these estimates and judgments. To the 
extent that there are material differences between these estimates and actual results, our consolidated financial results will be 
affected. The accounting policies that reflect our more significant estimates and judgments and which we believe are the most 
critical  to  aid  in  fully  understanding  and  evaluating  our  reported  financial  results  are  revenue  recognition,  including 
percentage-of-completion accounting for oil & gas projects; allowance for doubtful accounts; allowance for product warranty; 
valuation of stock options; valuation and impairment of goodwill and acquired intangible assets; valuation adjustments for 
excess  and  obsolete  inventory;  deferred  taxes  and  valuation  allowances  on  deferred  tax  assets;  and  evaluation  and 
measurement of contingencies, including contingent consideration. 

The following is not intended to be a comprehensive list of all of our accounting policies or estimates. Our accounting 
policies are more fully described in Note 2 – “Summary of Significant Accounting Policies,” included in “Item 8 — Financial 
Statements and Supplementary Data” in this Report. 

Revenue Recognition  

Product and service revenue recognition – Water Segment 

We recognize revenue when the earnings process is complete, as evidenced by a written agreement with the customer, 
transfer of title, fixed pricing that is determinable, and collection that is reasonably assured. Transfer of title typically occurs 
upon shipment of the equipment pursuant to a written purchase order or contract. The portion of the sales agreement related 
to the field services and training for commissioning of our devices in a desalination plant is deferred until we have performed 
such  services.  We  regularly  evaluate  our  revenue  arrangements  to  identify  deliverables  and  to  determine  whether  these 
deliverables are separable into multiple units of accounting. 

Under our revenue recognition policy, evidence of an arrangement is met when we have an executed purchase order, 
sales order, or stand-alone contract. Typically, smaller projects utilize sales or purchase orders that conform to standard terms 
and conditions. 

The specified product performance criteria for our PX ERD pertain to the ability of our product to meet its published 
performance specifications and warranty provisions, which our products have demonstrated on a consistent basis. This factor, 
combined with historical performance metrics, provides our management with a reasonable basis to conclude that the PX 
ERDs will perform satisfactorily upon commissioning of the plant. To ensure this successful product performance, we provide 
service consisting principally of supervision of customer personnel and training to the customers during the commissioning 
of the plant. The installation of the PX ERDs is relatively simple, requires no customization, and is performed by the customer 
under the supervision of our personnel. We defer the value of the service and training component of the contract and recognize 
such revenue as services are rendered. Based on these factors, our management has concluded that, for sale of PX ERDs, as 
well as for turbochargers and pumps, delivery and performance have been completed upon shipment or delivery when title 
transfers based on the shipping terms. 

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We perform an evaluation of customer credit worthiness on an individual contract basis to assess whether collectability 
is reasonably assured. As part of this evaluation, our management considers many factors about the individual customer, 
including the underlying financial strength of the customer and/or partnership consortium and management’s prior history or 
industry-specific knowledge about the customer and its supplier relationships. For smaller projects, we require the customer 
to  remit  payment  generally  within  30  to  90  days  after  product  delivery.  In  some  cases,  if  credit  worthiness  cannot  be 
determined, prepayment or other security is required. 

We establish separate units of accounting for contracts, as our contracts with customers typically include one or both of 

the deliverables, products or commissioning, and there is no right of return under the terms of the contract. 

Commissioning includes supervision of the installation, start-up, and training to ensure that the installation performed 
by the customer, which is relatively simple and straightforward, is completed consistent with the recommendations under the 
factory warranty. The commissioning services’ element of our contracts represents an incidental portion of the total contract 
price. The allocable consideration for these services relative to that for the underlying products has been well under 1% of 
any  arrangement.  Commissioning  is  often  bundled  into  the  large  stand-alone  contracts,  and  we  frequently  sell  products 
without commissioning since our product can be easily installed in a plant without supervision. These facts and circumstances 
validate that the delivered element has value on a stand-alone basis and should be considered a separate unit of accounting. 

Having established separate units of accounting, we then allocate amounts to each unit of accounting. With respect to 
products, we have established vendor specific objective evidence (“VSOE”) based on the price at which such products are 
sold separately without commissioning services. With respect to commissioning, we charge out our engineers for field visits 
to customers based on a stand-alone standard daily field service charge as well as a flat service rate for travel, if applicable. 
This has been determined to be the VSOE of the service based on stand-alone sales of other comparable professional services 
at consistent pricing.  

The  amount  allocable  to  the  delivered  unit  of  account  (in  our  case  the  product)  is  limited  to  the  amount  that  is  not 
contingent upon the delivery of additional items or meeting specified performance conditions. We adhere to consistent pricing 
in both stand-alone sale of products and professional services and the contractual pricing of products and commissioning of 
services in bundled arrangements. 

For large projects, stand-alone contracts are utilized. For these contracts, consistent with industry practice, our customers 
typically require their suppliers, including Energy Recovery, to accept contractual holdback provisions (also referred to as a 
retention payment) whereby the final amounts due under the sales contract are remitted over extended periods of time or 
alternatively, stand-by letters of credit are issued to guarantee performance. These retention payments are generally 10% or 
less  of  the  total  contract  amount  and  are  due  and  payable  when  the  customer  is  satisfied  that  certain  specified  product 
performance  criteria have been  met  upon  commissioning of  the desalination plant, which  may  be  up to  twenty-four  (24) 
months from the date of product delivery as described further below. 

Under stand-alone contracts, the usual payment arrangements are summarized as follows: 

●  an advance payment due upon execution of the contract, typically 10% to 20% of the total contract amount. This advance
payment is accounted for as deferred revenue until shipment or when products are delivered to the customer, depending 
on the Incoterms and transfer of title; 

●  a payment ranging from 50% to 70% of the total contract is typically due upon delivery of the product. This payment is
often divided into two parts. The first part, which is due thirty (30) to sixty (60) days following delivery of the product
and documentation, is invoiced upon shipment when the product revenue is recognized and results in an open accounts
receivable with the customer. The second part is typically due ninety (90) to one hundred twenty (120) days following 
product delivery and documentation. This payment is booked to unbilled receivables upon shipment when the product
revenue is recognized, and it is invoiced to the customer upon notification that the equipment has been received or when 
the time period has expired. We have no performance obligation to complete to be legally entitled to this payment. It is
invoiced based on the passage of time. 

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●  a  final  retention  payment  of  generally  10%  or  less  of  the  contract  amount  is  due  either  at  the  completion  of  plant
commissioning  or  upon  the  issuance  of  a  stand-by  letter  of  credit,  which  is  typically  issued  up  to  twenty-four  (24) 
months from the delivery date of products and documentation. This payment is recorded to unbilled receivables upon 
shipment  when  the  product  revenue  is  recognized,  and  it  is  invoiced  to  the  customer  when  it  is  determined  that
commissioning is complete or the stand-by letter of credit has been issued. This payment is not contingent upon the
delivery of commissioning services. The Company had no performance obligation to complete to be legally entitled to
this payment. It is invoiced based on the passage of time. 

We do not provide our customers with a right of product return; however, we will accept returns of products that are 
deemed to be damaged or defective when delivered that are covered by the terms and conditions of the product warranty. 
Product returns have not been significant. 

Shipping and handling charges billed to customers are included in product revenue. The cost of shipping to customers is 

included in cost of revenue. 

License, milestone payment, and royalty revenue recognition – Oil & Gas Segment 

License and development revenue is comprised of the amortization of the upfront non-refundable $75 million exclusivity 
fee received in connection with the VorTeq License Agreement. See Note 16 – VorTeq License Agreement in the Notes to 
the Consolidated Financial Statements in Item 8 of this Form 10-K. The VorTeq License Agreement comprises a fifteen-year 
exclusivity license for our VorTeq technology, milestone payments upon achievement of successful tests in accordance with 
the  Key  Performance  Indicators  (“KPIs”)  and,  after  commercialization  is  achieved,  royalty  payments  for  the  supply  and 
servicing of certain components of the VorTeq. All payments are non-refundable.  

We recognize license and development revenue in accordance with ASC 605 “Revenue Recognition,” subtopic ASC 
605-25  “Revenue  with  Multiple  Element  Arrangements”  and  subtopic  ASC  605-28  “Revenue  Recognition-Milestone 
Method,”  which  provides  accounting  guidance  for  revenue  recognition  for  arrangements  with  multiple  deliverables  and 
guidance  on  defining  the  milestone  and  determining  when  the  use  of  the  milestone  method  of  revenue  recognition  is 
appropriate, respectively. 

For  multiple-element  arrangements,  each  deliverable  is  accounted  for  as  a  separate  unit  of  accounting  if  both  the 
following criteria are met: (1) the delivered item or items have value to the customer on a standalone basis and (2) for an 
arrangement that includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered 
item(s) is considered probable and substantially in our control. Contingent deliverables within multiple element arrangements 
are excluded from the evaluation of the units of accounting. Non-refundable, upfront license fees where we have continuing 
obligation  to  perform  are  recognized  over  the  period  of  the  continuing  performance  obligation.  The  VorTeq  License 
Agreement was determined to include a single unit of accounting. The initial upfront fee of $75 million is recognized on a 
straight-line  basis  over  the  fifteen-year  term  of  the  arrangement  based  on  the  performance  period  of  the  last  or  final 
deliverables, which include the license and support.  

We recognize revenue from milestone payments when: (i) the milestone event is substantive and its achievability has 
substantive uncertainty at the inception of the agreement, and (ii) it does not have ongoing performance obligations related 
to the achievement of the milestone earned. Milestone payments are considered substantive if all of the following conditions 
are met, the milestone payment: (a) is commensurate with either the Company’s performance subsequent to the inception of 
the arrangement to achieve the milestone or the enhancement of the value of the delivered item or items as a result of a 
specific outcome resulting from the Company’s performance subsequent to the inception of the arrangement to achieve the 
milestone; (b) relates solely to past performance; and (c) is reasonable relative to all of the deliverables and payment terms 
(including other potential milestone consideration) within the arrangement. The VorTeq License Agreement includes two 
substantive milestones of $25 million each due on achievement of successful tests in accordance with KPIs. No revenues 
associated with achievement of the milestones have been recognized to date. 

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Percentage-of-completion revenue recognition – Oil & Gas Segment 

IsoBoost and IsoGen systems are highly engineered, customized solutions that are designed and manufactured over an 
extended  period  of  time  and  are  built  specifically  to  meet  a  customer’s  specifications.  It  is  the  Company’s  position  that 
percentage-of-completion  method  of  accounting  is  appropriate  for  IsoBoost  and  IsoGen  systems  given  the  facts  and 
circumstances of these projects. In the event that a purchase order for an IsoBoost or IsoGen does not meet these facts and 
circumstances, then percentage-of-completion method of accounting does not apply. 

Revenue from fixed price contracts is recognized using the percentage-of-completion method of accounting in the ratio 
of  costs  incurred  to  estimated  final  costs.  Contract  costs  include  all  direct  material  and  labor  costs  related  to  contract 
performance.  Pre-contract  costs  with  no  future  benefit  are  expensed  in  the  period  in  which  they  are  incurred.  Since  the 
financial reporting of these contracts depends on estimates, which are assessed continually during the term of the contract, 
recognized revenues and profit are subject to revisions as the contract progresses to completion. Revisions in profit estimates 
are reflected in the period in which the facts that give rise to the revisions become known. If material, the effects of any 
changes in estimates are disclosed in the notes to the consolidated financial statements. When estimates indicate that a loss 
will be incurred on a contract, a provision for the expected loss is recorded in the period in which the loss becomes evident. 
No loss has been incurred to date. Revenue is recognized only to the extent costs have been recognized in the same period. 

Allowances for Doubtful Accounts 

We record a provision for doubtful accounts based on historical experience and a detailed assessment of the collectability 
of our accounts receivable. In estimating the allowance for doubtful accounts, we consider, among other factors, the aging of 
the accounts receivable, our historical write-offs, the credit worthiness of each customer, and general economic conditions. 
Account balances are charged off against the allowance when we believe that it is probable that the receivable will not be 
recovered. Actual write-offs may be in excess of our estimated allowance. 

Warranty Costs 

We sell products with a limited warranty for a period ranging from eighteen (18) months to five (5) years. We accrue for 
warranty costs based on estimated product failure rates, historical activity, and expectations of future costs. Periodically, we 
evaluate and adjust the warranty costs to the extent that actual warranty costs vary from the original estimates. 

During the year ended December 31, 2015, we adjusted previously established warranty reserves. The adjustment related 

to expired warranties, which increased gross profit and reduced net loss by $0.4 million. 

Stock-based Compensation 

We measure and recognize stock-based compensation expense based on the fair value measurement for all stock-based 
awards  made  to  our  employees  and  directors  —  including  restricted  stock  units  (“RSUs”),  restricted  shares  (“RS”),  and 
employee stock options — over the requisite service period (typically the vesting period of the awards). The fair value of 
RSUs and RS is based on our stock price on the date of grant. The fair value of stock options is calculated on the date of grant 
using the Black-Scholes option pricing model, which requires a number of complex assumptions including expected life, 
expected volatility,  risk-free interest rate,  and dividend  yield. The  estimation of  awards  that will  ultimately  vest requires 
judgment,  and  to  the  extent  that  actual  results  or  updated  estimates  differ  from  our  current  estimates,  such  amounts  are 
recorded  as  a  cumulative  adjustment  in  the  period  in  which  the  estimates  are  revised.  See  Note  12  –  “Stock-based 
Compensation” in the Notes to the Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion of 
stock-based compensation. 

Goodwill and Other Intangible Assets 

The  purchase  price  of  an  acquired  company  is  allocated  between  intangible  assets  and  the  net  tangible  assets  of  the 
acquired business with the residual purchase price recorded as goodwill. The determination of the value of the intangible 
assets acquired involves certain judgments and estimates. These judgments can include, but are not limited to, the cash flows 
that an asset is expected to generate in the future and the appropriate weighted average cost of capital. 

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Acquired intangible assets with determinable useful lives are amortized on a straight-line or accelerated basis over the 
estimated periods benefited, ranging from one (1) to twenty (20) years. Acquired intangible assets with contractual terms are 
amortized over their respective legal or contractual lives. Customer relationships and other non-contractual intangible assets 
with determinable lives are amortized over periods ranging from five (5) to twenty (20) years. 

We evaluate the recoverability of intangible assets by comparing the carrying amount of an asset to estimated future net 
undiscounted cash flows generated by the asset. If such assets are considered to be impaired, the impairment recognized is 
measured as the amount by which the carrying amount of the assets exceeds the fair value of the assets. The evaluation of 
recoverability involves estimates of future operating cash flows based upon certain forecasted assumptions, including, but 
not limited to, revenue growth rates, gross profit margins, and operating expenses over the expected remaining useful life of 
the related asset. A shortfall in these estimated operating cash flows could result in an impairment charge in the future. 

Goodwill is not amortized, but is evaluated annually for impairment at the reporting unit level or when indicators of a 
potential impairment are present. We estimate the fair value of the reporting unit using the discounted cash flow and market 
approaches. Forecast of future cash flows are based on our best estimate of future net sales and operating expenses, based 
primarily on expected category expansion, pricing, market segment, and general economic conditions. 

As  of  December  31,  2016  and  2015,  acquired  intangibles,  including  goodwill,  relate  to  the  acquisition  of  Pump 
Engineering, LLC during the fourth quarter of 2009. See Note 6 – “Goodwill and Intangible Assets” in the Notes to the 
Consolidated Financial Statements for further discussion of intangible assets. 

Inventories 

Inventories are stated at the lower of cost (using the first-in, first-out “FIFO” method) or market. We calculate inventory 
valuation adjustments for excess and obsolete inventory based on current inventory levels, movement, expected useful lives, 
and estimated future demand of the products and spare parts. 

Income Taxes 

Current and non-current tax assets and liabilities are based upon an estimate of taxes refundable or payable for each of 
the jurisdictions in which we are subject to tax. In the ordinary course of business, there is inherent uncertainty in quantifying 
income tax positions. We assess income tax positions and record tax benefits for all years subject to examination based upon 
our evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it 
is more likely than not that a tax benefit will be sustained, we record the largest amount of tax benefit with a greater than 
50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant 
information. For those income tax positions where it is not more likely than not that a tax benefit will be sustained, no tax 
benefit  is  recognized  in  the  financial  statements.  When  applicable,  associated  interest  and  penalties  are  recognized  as  a 
component of income tax expense. Accrued interest and penalties are included within the related tax asset or liability on the 
Consolidated Balance Sheets. 

Deferred income taxes are provided for temporary differences arising from differences in bases of assets and liabilities 
for tax and financial reporting purposes. Deferred income taxes are recorded on temporary differences using enacted tax rates 
in effect for the year in which the temporary differences are expected to reverse. The effect of a change in tax rates on deferred 
tax assets and liabilities is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced 
by  a  valuation  allowance when,  in  the  opinion of  management,  it  is  more  likely  than not  that  some  portion  or  all  of  the 
deferred  tax  assets  will  not  be  realized.  Significant  judgment  is  required  in  determining  whether  and  to  what  extent  any 
valuation allowance is needed on our deferred tax assets. In making such a determination, we consider all available positive 
and negative evidence including recent results of operations, scheduled reversals of deferred tax liabilities, projected future 
income, and available tax planning strategies. As of December 31, 2016, we have a valuation allowance of approximately 
$21.1 million to reduce our U.S. deferred income tax assets to the amount expected to be realized. See Note 10 – “Income 
Taxes” in the Notes to the Consolidated Financial Statements in Item 8 of this Form 10-K for further discussion of the tax 
valuation allowance. 

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We have recorded a valuation allowance against all of our U.S. deferred tax assets as of December 31, 2016. We intend 
to continue maintaining a full valuation allowance on our U.S. deferred tax assets until there is sufficient evidence to support 
the reversal of all or some portion of this allowance. However, given our current earnings and anticipated future earnings, we 
believe that there is a reasonable possibility that within the next twelve (12) months, sufficient positive evidence may become 
available to allow us to reach a conclusion that a significant portion of the valuation allowance will no longer be needed. 
Release of the valuation allowance would result in the recognition of certain deferred tax assets and a decrease in income tax 
expense for the period the release is recorded. However, the exact timing and amount of the valuation allowance release are 
subject to change on the basis of the level of profitability that we are able to actually achieve. 

Our operations are subject to income and transaction taxes in the U.S. and in foreign jurisdictions. Significant estimates 
and judgments are required in determining our worldwide provision for income taxes. Some of these estimates are based on 
interpretations of existing tax laws or regulations. The ultimate amount of tax liability may be uncertain as a result. 

-31- 

  
  
  
  
 
 
Results of Operations 

2016 Compared to 2015 

Total revenue 

For the Year Ended December 31, 

Product revenue ........................................................    $ 
License and development revenue ...........................      
Total revenue ........................................................    $ 

49,715       91%   $ 
5,000      
9%     
54,715       100%   $ 

Product revenue 

2016 

2015 

43,671       98%   $ 
1,042      
2%     
44,713       100%   $ 

Change  
Increase (Decrease) 
6,044      
14% 
3,958       380% 
22% 
10,002      

Segment 
Water ............................................................................................    $
Oil & Gas .....................................................................................      
Total product revenue ...............................................................    $

47,545     $
2,170       
49,715     $

2016 

2015 

     $ Change       % Change   
9%
1,439%
14%

4,015      
2,029      
6,044      

43,530     $ 
141       
43,671     $ 

For the Year Ended December 31, 

Total product revenue increased by $6.0 million, or 14%, to $49.7 million in 2016 from $43.7 million in 2015. Of the 
$6.0 million increase, $4.0 million was attributable to the Water Segment and $2.0 million was attributable to the Oil & Gas 
Segment. 

The increase in Water Segment product revenue was primarily due to higher mega-project (MPD), OEM, and aftermarket 
shipments in 2016 as compared to 2015. Of the $4.0 million increase in our Water Segment product revenue, $1.9 million 
related to MPD sales, $1.2 million related to OEM sales, $0.9 million related to aftermarket sales.  

Of  the  $2.0  million  increase  in  Oil  &  Gas  Segment  product  revenue,  $2.2  million  was  due  to  the  percentage-of-
completion revenue recognition associated with the sale of multiple IsoBoost systems. The increase was offset by ($0.2) 
million related to the commissioning of an IsoGen system and the cancellation of a purchase order for an IsoBoost in early 
2015. 

Product revenue attributable to domestic and international sales as a percentage of total product revenue was as follows: 

Domestic revenue ............................................................................................................     
International revenue .......................................................................................................     
Total product revenue ..................................................................................................     

2 %    
98 %    
100 %    

7%
93%
100%

For the Year Ended 
December 31, 

2016 

2015 

License and development revenue 

Segment 
Water ............................................................................................    $
Oil & Gas .....................................................................................      
License and development revenue ............................................    $

For the Year Ended December 31, 

2016 

2015 

—     $
5,000       
5,000     $

     $ Change       % Change   
—  
—      
380%
3,958      
380%
3,958      

—     $ 
1,042       
1,042     $ 

License and development revenue increased by $4.0 million, or 380%, to $5.0 million in 2016 from $1.0 million in 2015. 
In October 2015, we entered into a fifteen-year exclusive license agreement with the VorTeq Licensee for the use of our 
VorTeq  technology  and  received  a  $75  million  up-front  exclusivity  fee.  The  increase  of  $4.0  million  in  license  and 
development revenue in 2016 compared to 2015 was due to the recognition of a full year of amortization of the deferred 
revenue compared to a partial year of amortization in 2015 related to this license agreement. 

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License and development revenue attributable to domestic and international sales as a percentage of total license and 

development revenue was as follows: 

For the Year Ended 
December 31, 

2016 

2015 

Domestic revenue ............................................................................................................     
International revenue .......................................................................................................     
Total license and development revenue .......................................................................     

—        
100 %    
100 %    

—   
100 %
100 %

Product gross profit 

Year Ended December 31, 2016 
      Oil &Gas       Total 

   Water 

Year Ended December 31, 2015 
      Oil &Gas       Total 

      Water 

Product gross profit ......................   $ 
Product gross margin ............     

31,192     $ 
66%    

674     $
31%     

31,866     $
64%    

24,485     $ 
56%    

75     $
53%     

24,560  
56%

Product gross profit represents our product revenue less our product cost of revenue. Our product cost of revenue consists 
primarily of raw materials, personnel costs (including stock-based compensation), manufacturing overhead, warranty costs, 
depreciation expense, and manufactured components.  

Product gross profit increased by $7.3 million, or 30%, to $31.9 million in 2016 from $24.6 million in 2015. For the year 
ended December 31, 2016, product gross margin (total product gross profit as a percentage of product revenue) was 64% 
compared to 56% for the year ended December 31, 2015.  

The increase in product gross profit in 2016 compared to 2015 was primarily due to increased sales volume, favorable 

product price and mix, and increased operational efficiencies. 

Manufacturing headcount decreased to 40 for the year ended December 31, 2016 from 42 for the year ended December 

31, 2015. 

Stock-based compensation expense included in cost of revenue was $0.1 million for the year ended December 31, 2016 

and $0.1 million for the year ended December 31, 2015. 

Operating expenses 

For the Year Ended December 31, 

2016 

2015 

Change  
Increase (Decrease)   

Total revenue ............................................................   $ 

54,715       100%   $ 

44,713       100%   $  10,002      

22% 

Operating expenses: 

General and administrative ...................................     
Sales and marketing ..............................................     
Research and development ...................................     
Amortization of intangible assets .........................     
Total operating expenses ..........................................   $ 

16,626       30%     
9,116       17%     
10,136       19%     
1%     
36,509       67%   $ 

631      

19,773       44%     
9,326       21%     
7,659       17%     
1%     
37,393       84%   $ 

635      

(3,147)     
(210)     
2,477      
(4)     
(884)     

(16%) 
(2%) 
32% 
(1%) 
(2%) 

General and administrative  

General and administrative expense decreased by ($3.2) million, or 16%, to $16.6 million in 2016 from $19.8 million in 
2015. Of the($3.2) million decrease in general and administrative expense, ($2.1) million related to professional, legal, and 
other administrative costs and ($1.1) million related to stock-based compensation expense.  

General and administrative headcount increased to 30 for the year ended December 31, 2016 from 26 for the year ended 

December 31, 2015.  

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Stock-based compensation expense included in general and administrative expense was $2.1 million for the year ended 
December 31, 2016 and $3.1 million for the year ended December 31, 2015. The decrease in stock-based compensation is 
primarily  related  to  the  decrease  of  non-recurring  expenses  associated  with  the  accelerated  vesting  and  modification  of 
options connected to the resignation of the former Chief Executive Officer in the first quarter of 2015. 

Sales and marketing  

Sales and marketing expense decreased by ($0.2) million, or 2%, to $9.1 million in 2016 from $9.3 million in 2015. Of 
the ($0.2) million decrease in sales and marketing expense, ($0.4) million related to compensation, sales commissions, and 
employee-related benefits, which was partially offset by a $0.2 million increase related to bonuses. 

Sales  and  marketing  headcount  decreased  to  28  for  the  year  ended  December  31,  2016  from  29  for  the  year  ended 

December 31, 2015. 

Stock-based  compensation  expense  included  in  sales  and  marketing  expense  was  $0.5  million  for  the  year  ended 

December 31, 2016 and $0.4 million for the year ended December 31, 2015. 

Research and development  

Research and development expense increased by $2.4 million, or 32%, to $10.1 million in 2016 from $7.7 million in 
2015.  Of  the  $2.4  million  increase  in  research  and  development  expense,  $1.2  million  related  to  direct  research  and 
development project costs associated with new product initiatives and $1.2 million related to compensation and employee-
related benefits. 

Research and development headcount increased to 22 for the year ended December 31, 2016 from 17 for the year ended 

December 31, 2015.  

Stock-based  compensation  expense  included  in  research  and  development  expense  was  $569,000  for  the  year  ended 

December 31, 2016 and $354,000 for the year ended December 31, 2015. 

Amortization of intangible assets 

Amortization of intangible assets is related to finite-lived intangible assets acquired as a result of our purchase of Pump 
Engineering, LLC in December 2009. Amortization expense decreased by ($0.004) million, or 1%, to $0.6 million in 2016 
from $0.6 million in 2015. 

Other income (expense) 

For the Year Ended December 31, 

Total revenue ..........................................................    $ 

54,715       100%   $ 

44,713       100%   $ 

2016 

2015 

Change  
Increase (Decrease)   
10,002      

22% 

Other income (expense): 

Interest expense ..................................................      
Other non-operating income (expense), net ........      
Total other (expense) income .................................    $ 
* less than 1% 

(3)     
290      
287      

*       
1%     
1%   $ 

(42)     
(139)     
(181)     

*       
*       
*     $ 

39      

93% 
429       309% 
468       259% 

Other income (expense) increased by $0.5 million, or 259%, to income of $0.3 million in 2016 from an expense of ($0.2) 
million in 2015. The increase was due to higher interest income; lower interest expense; the favorable disposition of foreign 
currency options; and favorable foreign currency exchange in 2016 compared to 2015. 

Income taxes 

Our income tax benefit was $0.4 million for the year ended December 31, 2016 compared to a tax benefit of $0.3 million 
for the year ended December 31, 2015. The tax benefit of $0.4 million for the year ended December 31, 2016, consisted of 

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$0.7 million benefit related to the losses in our Ireland subsidiary which was partially offset by tax expense of ($0.3) million 
related to the deferred tax effects associated with the amortization of goodwill and other taxes. 

The tax benefit of $0.3 million for the year ended December 31, 2015, consisted of $0.6 million benefit related to the 
losses in our Ireland subsidiary which was partially offset by tax expense of ($0.3) million related to the deferred tax effects 
associated with the amortization of goodwill and other taxes.  

2015 Compared to 2014 

Total revenue 

For the Year Ended December 31, 

Product revenue ........................................................    $ 
License and development revenue ...........................      
Total revenue ........................................................    $ 

43,671       98%   $ 
2%     
1,042      
44,713       100%   $ 

Product revenue 

2015 

2014 

30,426       100%   $ 
—       — 
30,426       100%   $ 

Change  
Increase (Decrease) 
13,245      
1,042       — 
14,287      

47% 

44% 

Segment 
Water ............................................................................................   $ 
Oil & Gas .....................................................................................     
Total product revenue ...............................................................   $ 

2015 

2014 

     $ Change       % Change   

43,530    $
141      
43,671    $

29,643     $ 
783       
30,426     $ 

13,887      
(642)     
13,245      

47% 
(82%) 
44% 

For the Year Ended December 31, 

Total product revenue increased by $13.2 million, or 44%, to $43.7 million in 2015 from $30.4 million in 2014. Of the 
$13.2 million increase, $13.8 million was attributable to the Water Segment, which was partially offset by a decrease of 
($0.6) million in the Oil & Gas Segment. 

The increase in Water Segment product revenue was primarily due to significantly higher MPD, OEM, and aftermarket 
shipments in 2015 as compared to 2014. Of the $13.2 million increase in Water Segment product revenue, $9.8 million related 
to MPD sales, $2.8 million related to OEM sales, $1.2 million related to aftermarket sales.  

The decrease in Oil & Gas Segment product revenue of ($0.6) million related to the lease buy-out of an IsoGen system 

in 2014 and the commissioning of that system in early 2015. 

Product revenue attributable to domestic and international sales as a percentage of total product revenue was as follows: 

For the Year Ended 
December 31, 

2015 

2014 

Domestic revenue ............................................................................................................     
International revenue .......................................................................................................     
Total product revenue ..................................................................................................     

7 %    
93 %    
100 %    

4 %
96 %
100 %

License and development revenue 

Segment 
Water ............................................................................................    $ 
Oil & Gas .....................................................................................      
License and development revenue ............................................    $ 

2015 

2014 

—    $ 
1,042      
1,042    $ 

     $ Change      % Change   
—  
—      
—  
1,042      
—  
1,042      

—    $ 
—      
—    $ 

For the Year Ended December 31, 

License and development revenue increased by $1.0 million, to $1.0 million in 2015 from zero in 2014. In October 2015, 
we entered into a fifteen-year exclusive license agreement with the VorTeq Licensee for the use of our VorTeq technology 

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and received a $75 million up-front exclusivity fee. The increase in license and development revenue in 2015 was due to the 
recognition of a partial year of amortization in 2015 related to this license agreement. 

License and development revenue attributable to domestic and international sales as a percentage of total license and 

development revenue was as follows: 

For the Year Ended 
December 31, 

2015 

2014 

Domestic revenue ............................................................................................................     
International revenue .......................................................................................................     
Total license and development revenue .......................................................................     

—       
100%     
100%     

—  
—  
—  

Product gross profit 

Year Ended December 31, 2015 
      Oil &Gas       Total 

   Water 

Year Ended December 31, 2014 
      Oil &Gas       Total 

      Water 

Product gross profit ......................   $ 
Product gross margin ............     

24,485     $ 
56%    

75     $
53%     

24,560     $
56%    

15,930     $ 
54%    

783     $
100%     

16,713  
55%

Product gross profit increased by $7.9 million, or 47%, to $24.6 million in 2015 from $16.7 million in 2014. For the year 

ended December 31, 2015, total product gross margin was 56% compared to 55% for the year ended December 31, 2014.  

The increase in total product gross profit in 2015 compared to 2014 was primarily due to higher production volume and 
a  shift  in product  mix  toward PX  ERDs due  to  increased  MPD  sales volume  in  the Water  Segment  as well  as  increased 
operational efficiencies. The increase in product gross profit in the Water Segment was slightly offset by a decrease in the 
product gross profit of the Oil & Gas Segment due to cost associated with the commissioning of an IsoGen in 2015. 

Manufacturing headcount increased to 42 for the year ended December 31, 2015 from 38 for the year ended December 

31, 2014. 

Stock-based compensation expense included in cost of revenue was $0.1 million for the year ended December 31, 2015 

and $0.1 million for the year ended December 31, 2014. 

Operating expenses 

For the Year Ended December 31, 

2015 

2014 

Change  
Increase (Decrease)   

Total revenue ............................................................   $ 

44,713       100%   $ 

30,426       100%   $  14,287      

47% 

Operating expenses: 

General and administrative ...................................     
Sales and marketing ..............................................     
Research and development ...................................     
Amortization of intangible assets .........................     
Total operating expenses ..........................................   $ 

19,773       44%     
9,326       21%     
7,659       17%     
1%     
37,393       84%   $ 

635      

14,139       46%     
10,525       35%     
9,690       32%     
3%     
35,196       116%   $ 

842      

5,634      
(1,199)     
(2,031)     
(207)     
2,197      

40% 
(11%) 
(21%) 
(25%) 
6% 

General and administrative  

General and administrative expense increased by $5.7 million, or 40%, to $19.8 million in 2015 from $14.1 million in 
2014.  Of  the  $5.7  million  increase  in  general  and  administrative  expense,  $2.0  million  related  to  increased  stock-based 
compensation  expense,  including  non-recurring  expense  associated  with  the  resignation  of  our  former  Chief  Executive 
Officer in January 2015; $1.8 million related to compensation and employee-related benefits, that included non-recurring 
termination benefits associated with a reduction in force in the first quarter of 2015; $1.1 million related to professional, 
legal, and other administrative costs, including non-recurring expenses related to the termination of the former Senior Vice-
President of Sales in 2014; $0.9 million related to the reversal of VAT in the first quarter of 2014 that was expensed in 2011  

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and prior years; $0.4 million related to bad debt expense, occupancy costs, and other taxes; and $0.2 million related to the 
fair value remeasurement of the contingent consideration related to the acquisition of Pump Engineering which was settled 
in 2014. Partially offsetting these increases was a decrease of ($0.7) million in other general and administrative miscellaneous 
costs.  

General and administrative headcount decreased to 26 for the year ended December 31, 2015 from 28 for the year ended 

December 31, 2014.  

Stock-based compensation expense included in general and administrative expense was $3.1 million for 2015 and $1.2 
million for 2014. The increase in stock-based compensation is primarily related to the increased value of options granted to 
non-employee directors in February 2015, the full vesting of restricted shares granted to a non-employee director in December 
2014,  and  non-recurring  expenses  related  to  the  accelerated  vesting  and  modification  of  options  associated  with  the 
resignation of our former Chief Executive Officer in the first quarter of 2015. 

Sales and marketing  

Sales and marketing expense decreased by ($1.2) million, or 11%, to $9.3 million in 2015 from $ 10.5 million in 2014. 
Of the ($1.2) million decrease in sales and marketing expense, ($1.3) million related to marketing, professional, occupancy, 
and other sales and marketing costs and ($0.7) million related to compensation and employee-related benefits. The decreases 
were partially offset by an increase of $0.8 million related to sales commissions and bonuses. 

Sales  and  marketing  headcount  decreased  to  29  for  the  year  ended  December  31,  2015  from  36  for  the  year  ended 

December 31, 2014. 

Stock-based compensation expense included in sales and marketing expense was $436,000 for the year ended December 

31, 2015 and $487,000 for the year ended December 31, 2014. 

Research and development  

Research and development expense decreased by ($2.0) million, or 21%, to $7.7 million in 2015 from $9.7 million in 
2014.  Of  the  ($2.0)  million  decrease  in  research  and  development  expense,  ($2.4)  million  related  to  direct  research  and 
development project costs associated with new product initiatives and ($0.3) million related to consulting and professional 
services.  The  decreases  were  partially  offset  by  an  increase  of  $0.7  million  related  to  compensation,  employee-related 
benefits, and occupancy costs. 

Research and development headcount decreased to 17 for the year ended December 31, 2015 from 22 for the year ended 

December 31, 2014.  

Stock-based compensation expense included in research and development expense was $0.4 million for the year ended 

December 31, 2015 and $0.3 million for the year ended December 31, 2014. 

Amortization of intangible assets 

Amortization  expense  decreased  by  ($0.2)  million,  or  25%,  to  $0.6  million  in  2015  from  $0.8  million  in  2014.  The 

decrease was due to the full amortization of all intangibles, except developed technology, in November of 2014. 

Other income (expense) 

For the Year Ended December 31, 

Total revenue ..........................................................    $ 

44,713       100%   $ 

30,426        100%   $ 

2015 

2014 

Change  
Increase (Decrease)   
14,287       

47% 

Other income (expense): 

Interest expense ..................................................      
Other non-operating income (expense), net ........      
Total other (expense) income .................................    $ 
* less than 1% 

(42)     
(139)     
(181)     

*       
* 
* 

  $ 

—       
69       
69       

*       
*       
*     $ 

(42 )     

* 

(208 )      (301%) 
(250 )      (362%) 

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Other income (expense) decreased by ($0.3) million, or 362%, to an expense of ($0.2) million in 2015 from income of 
$0.1  million  in  2014.  The  decrease was due  to  lower  interest  income;  higher  interest expense;  unfavorable fair  value re-
measurement of put foreign currency options; and favorable foreign currency exchange in 2015 compared to 2014. 

Income taxes 

Our income tax benefit was $0.3 million for the year ended December 31, 2015 compared to a tax provision of ($0.3) 
million  for  the  year  ended  December  31,  2014.  The  tax  benefit  of  $0.3  million  for  the  year  ended  December  31,  2015, 
consisted of $0.6 million benefit related to the losses in our Ireland subsidiary. The benefit was partially offset by tax expense 
of ($0.3) million related to the deferred tax effects associated with the amortization of goodwill and other taxes. 

The tax provision of ($0.3) million for the year ended December 31, 2014, consisted of tax expense of ($0.3) million 
related to the deferred tax effects associated with the amortization of goodwill and state and other taxes. The tax expenses 
were offset by a tax benefit associated with foreign currency translation adjustments recorded in other comprehensive income. 

Liquidity and Capital Resources 

Historically, our primary sources of cash are proceeds from customer payments for our products and services and the 
issuance of common stock. In October 2015, we received a payment of $75 million for an exclusive license to our VorTeq. 
From January 1, 2005 through December 31, 2016, we issued common stock for aggregate net proceeds of $94.8 million, 
excluding common stock issued in exchange for promissory notes. The proceeds have been used to fund our operations and 
capital expenditures.  

As of December 31, 2016, our principal sources of liquidity consisted of unrestricted cash and cash equivalents of $61.4 
million, some of which is invested in money market funds; short-term investments in marketable debt securities of $39.1 
million; and accounts receivable of $11.8 million. We generally invest cash not needed for current operations predominantly 
in high-quality, investment-grade, and marketable debt instruments with the intent to make such funds available for operating 
purposes as needed. 

We currently have unbilled receivables pertaining to customer contractual holdback provisions, whereby we will invoice 
the final retention payment(s) due under certain sales contracts in the next six (6) to twenty-four (24) months. The customer 
holdbacks represent amounts intended to provide a form of security for the customer; accordingly, these receivables have not 
been discounted to present value. At December 31, 2016 and 2015, we had $0.2 million and $1.9 million, respectively, of 
short-term and long-term unbilled receivables.  

In June 2012, we entered into a loan agreement with a financial institution. The loan agreement was amended in June 
2015, (as amended, the “Loan Agreement”). The Loan Agreement provides for a total available credit line of $16.0 million. 
Under the Loan Agreement, we are allowed to draw advances not to exceed the lesser of the $16 million credit line or the 
credit line minus all outstanding revolving loans. Revolving loans may be in the form of a base rate loan that bears interest 
equal to the prime rate or a Eurodollar loan that bears interest equal to the adjusted LIBOR rate plus 1.25%. Stand-by letters 
of credit are subject to customary fees and expenses for issuance or renewal. The unused portion of the credit facility is 
subject to a facility fee in an amount equal to 0.25% per annum of the average unused portion of the revolving line. The Loan 
Agreement also requires us to maintain a cash collateral balance equal to 101% of all outstanding advances and all outstanding 
stand-by letters of credit collateralized by the line of credit. The Loan Agreement matures in June 2018 and is collateralized 
by  substantially  all  of  our  assets.  As  of  December  31,  2016  and  2015,  there  were  no  advances  drawn  under  the  Loan 
Agreement. This Loan Agreement was terminated on January 24, 2017. 

As of December 31, 2016, the amount outstanding on stand-by letters of credit collateralized under the Loan Agreement 
totaled $3.1 million, and restricted cash related to the stand-by letters of credit issued under the Loan Agreement was $3.1 
million. Of the $3.1 million in restricted cash, $1.0 million was classified as current and $2.1 million was classified as non-
current.  

We are subject to certain financial and administrative covenants under the Loan Agreement. As of December 31, 2016, 

we were in compliance with these covenants.  

At  December 31, 2016, we also had  stand-by  letters of  credit  collateralized  by restricted  cash  at  two other  financial 
institutions totaling $1.3 million. Total restricted cash related to these stand-by letters of credit totaled $1.3 million as of 
December 31, 2016, all of which was classified as current. 

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On  January 27,  2017, we  entered  into  a  loan  and pledge  agreement  (the “Loan  and  Pledge Agreement”)  with  another 
financial institution. The Loan and Pledge Agreement provides for a committed revolving credit line of $16.0 million and an 
uncommitted revolving credit line of $4.0 million. Under the Loan and Pledge Agreement we are allowed to borrow and 
request letters of credit against the eligible assets held from time to time in the pledged account maintained with the financial 
institution. Stand-by letters of credit are secured by pledged U.S. investments and there is no cash collateral balance required. 
Stand-by letters of credit are subject to fees, in an amount equal to 0.7% per annum of the face amount of the letter of credit, 
that are payable quarterly and are non-refundable. Revolving loans incur interest per annum on the base rate equal to the 
LIBOR rate plus  the  Margin defined  as 1.5%. Any default  bears  the  aforementioned  interest  plus  an additional 2%.  The 
unused portion of the credit line is subject to a fee equal to the product of 0.20% per annum multiplied by the difference, if 
positive, between $16.0 million and the average daily balance of all advances under the committed facility plus aggregate 
average daily undrawn amounts of all letters of credit issued under the committed facility during the immediately preceding 
month or portion thereof. 

Cash Flows from Operating Activities 

Net cash provided by (used in) operating activities was $5.0 million, $69.1 million, and ($3.7) million, for the years 
ended December 31, 2016, 2015, and 2014, respectively. For the years ended December 31, 2016, 2015, and 2014, net income 
(losses) of $1.0 million, ($11.6) million, and ($18.7) million, respectively, were adjusted to $7.2 million, ($4.3) million, and 
($10.9) million, respectively, by non-cash items totaling $6.2 million, $7.3 million, and $7.8 million, respectively. 

Non-cash adjustments of $6.2 million in 2016 primarily included $3.7 million of depreciation and amortization; $3.3 
million of stock-based compensation; $0.2 million of amortization of premiums paid on investments; $0.2 million provision 
for warranty claims; $0.1 million of reserves for doubtful accounts; ($0.5) million of deferred income taxes; ($0.4) million 
of valuation  adjustments  to  excess  and obsolete  inventory  reserves;  ($0.2)  million  reversal  of  accruals  related  to  expired 
warranties; and ($0.2) million of other non-cash items. 

Non-cash adjustments of $7.3 million in 2015 primarily included $4.1 million of stock-based compensation; $3.8 million 
of depreciation and amortization; $0.2 million of amortization of premiums paid on investments; a $0.1 million provision for 
warranty  claims;  $0.1  million  of  reserves  for  doubtful  accounts;  ($0.4)  million  reversal  of  accruals  related  to  expired 
warranties;  ($0.3)  million  of  deferred  income  taxes;  and  ($0.3)  million  of  valuation  adjustments  to  excess  and  obsolete 
inventory reserves. 

Non-cash adjustments of $7.8 million in 2014 primarily included $4.0 million of depreciation and amortization; $2.1 
million  of  stock-based  compensation;  $0.7  million  of  deferred  income  taxes  and  other  non-cash  items;  $0.4  million  of 
amortization  of  premiums  paid  on  investments;  $0.3  million  of  reserves  for  doubtful  accounts;  $0.3  million  of  valuation 
adjustments to excess and obsolete inventory reserves; a $0.2 million provision for warranty claims; ($0.2) million related to 
the change in fair value of a contingent consideration, which was associated with the acquisition of Pump Engineering; and 
($0.1) million of unrealized gains on foreign currency transactions. 

The net cash effect from changes in operating assets and liabilities was ($2.3) million, $73.3 million, and $7.2 million 
for the years ended December 31, 2016, 2015, and 2014, respectively. Net changes in assets and liabilities of $(2.3) million 
in 2016 were primarily attributable to a ($5.0) million decrease in deferred revenue due to the recognition of revenue related 
to  our  exclusive  license  agreement;  a  ($1.8)  million  increase  in  cost  and  estimated  billings  related  to  a  percentage-of-
completion revenue recognition project; a ($0.4) million increase in prepaid expenses and other assets; and a ($0.4) million 
decrease in accounts payable. These were offset by a $2.3 million decrease in inventories due to increased shipments; a $1.5 
million  decrease  in  accounts  receivable  and  unbilled  receivables  due  to  timing  of  invoices  and  payments;  a  $1.2  million 
increase in accrued expenses and other liabilities; and a $0.3 million increase in product deferred revenue. 

Net changes in assets and liabilities of $73.3 million in 2015 were primarily attributable to the receipt of a $75.0 million 
exclusive  license  payment,  of  which  $1.0  million  was  recognized  as  revenue  and  the  remainder  deferred;  a  $2.0  million 
decrease in inventories related to increased shipments; a $0.3 million increase in product deferred revenue; and a $0.3 million 
decrease in prepaid expenses and other assets. These were offset by a ($1.7) million litigation settlement payment; a ($0.9) 
million increase in accounts receivable and unbilled receivables related to increased shipments; and a ($0.7) million decrease 
in accrued expenses and other liabilities related to decrease legal expenses and litigation matters. 

Net changes in assets and liabilities of $7.2 million in 2014 were primarily attributable to an $8.9 million decrease in 
accounts receivable and unbilled receivables as a result of lower sales and the collection of outstanding amounts; a $1.9 
million increase in accrued expenses and other liabilities related to increased legal expense and litigation matters; and a $0.6  

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million increase in accounts payable due to the timing of payments to employees, vendors, and other third parties. These were 
offset by a $3.6 million increase in inventory of which $2.3 million was an increase in finished goods principally related to a 
large MPD shipment built in the fourth quarter of 2014 but expected to ship in the first quarter of 2015; a $0.3 million increase 
in prepaid expenses; and a $0.3 million decrease in deferred revenue. 

Cash Flows from Investing Activities 

Cash flows from investing activities primarily relate to maturities and purchases of marketable securities to preserve 
principal and liquidity while at the same time maximizing yields without significantly increasing risk, capital expenditures 
to  support  our  growth,  and  changes  in  our  restricted  cash  used  to  collateralize  our  stand-by  letters  of  credit  and  other 
contingent considerations.  

Net cash (used in) provided by investing activities was ($40.7) million, $14.0 million, and $6.5 million for the years 
ended December 31, 2016, 2015, and 2014, respectively. Cash used in 2016 of ($40.7) million was primarily attributable to 
($46.5) million used to purchase investments; ($1.1) million for capital expenditures; and ($0.6) million increase in restricted 
cash related to additional stand-by letters of credit. These were offset by $7.5 million in maturities of marketable security 
investments. 

Cash provided in 2015 of $14.0 million was primarily attributable to $12.9 million in maturities of investments and the 
release of $1.7 million of restricted cash related to the expiration of stand-by letters of credit. These were offset by the use of 
($0.6) million for capital expenditures. 

Cash provided in 2014 of $6.5 million was primarily attributable to $6.0 million in maturities of investments and the 
release of $3.3 million of restricted cash primarily related to the settlement of a contingent consideration associated with the 
acquisition of Pump Engineering. These were offset by uses of ($2.6) million for capital expenditures and ($0.2) million in 
purchases of marketable security investments. 

Cash Flows from Financing Activities 

Net cash (used in) provided by financing activities was ($2.8) million, $1.4 million, and ($1.8) million for the years 
ending December 31, 2016, 2015, and 2014, respectively. Net cash used in 2016 of ($2.8) million was primarily due to the 
use of ($9.4) million to repurchase our common stock offset by $6.6 million received from the issuance of common stock 
related to option exercises. 

Net cash provided in 2015 of $1.4 million was primarily due to $1.3 million received from the issuance of common stock 

related to option and warrant exercises and $0.1 million of proceeds from long-term debt.  

Net cash used in 2014 of ($1.8) million was primarily due to the use of ($2.8) million to repurchase our common stock 
and ($1.4) million to pay the contingent consideration related to the acquisition of Pump Engineering, which were offset by 
$2.4 million received from the issuance of common stock related to option and warrant exercises.  

Liquidity and Capital Resource Requirements 

We believe that our existing resources and cash generated from our operations will be sufficient to meet our anticipated 
capital requirements for at least the next twelve months. However, we may need to raise additional capital or incur additional 
indebtedness to continue to fund our operations or to support acquisitions in the future. Our future capital requirements will 
depend on many factors, including the continuing market acceptance of our products, our rate of revenue growth, the timing 
of  new  product  introductions,  the  expansion  of  our  research  and  development,  manufacturing,  and  sales  and  marketing 
activities, the timing and extent of our expansion into new geographic territories, and the amount and timing of cash used for 
stock  repurchases.  In  addition,  we  may  enter  into  potential  material  investments  in,  or  acquisitions  of,  complementary 
businesses, services, or technologies in the future, which could also require us to seek additional equity or debt financing. 
Should we need additional liquidity or capital funds, these funds may not be available to us on favorable terms or at all. 

-40- 

   
  
  
  
  
   
  
  
  
   
  
  
 
 
Contractual Obligations 

We lease facilities and equipment under fixed non-cancellable operating leases that expire on various dates through 2021. 
Additionally,  in  the  course  of  our  normal  operations,  we  have  entered  into  cancellable  purchase  commitments  with  our 
suppliers for various key raw materials and component parts. The purchase commitments covered by these arrangements are 
subject to change based on our sales forecasts for future deliveries. 

The following is a summary of our contractual obligations as of December 31, 2016 (in thousands): 

Contractual obligations 
Operating leases ...........................................................................    $ 
Loan payable ................................................................................      
Purchase obligations(1) ..................................................................      
  $ 

   Less Than 
1 Year 

Payments Due by Period 

1-3 
Years 

3-5 
Years 

1,705    $
11      
6,755      
8,471    $

3,122    $ 
23      
—      
3,145    $ 

93    $
4      
—      
97    $

Total 

4,920  
38  
6,755  
11,713  

(1)  Purchase obligations are related to open purchase orders for materials and supplies. 

This table excludes agreements with guarantees or indemnity provisions that we have entered into with customers and 
others in the ordinary course of business. Based on our historical experience and information known to us as of December 
31, 2016, we believe that our exposure related to these guarantees and indemnities as of December 31, 2016 was not material.  

Off-Balance Sheet Arrangements 

During the periods presented, we did not have any relationships with unconsolidated entities or financial partnerships 
such as entities often referred to as structured finance or special purpose entities, which would have been established for the 
purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes. 

Recent Accounting Pronouncements 

See  Note  2  —  “Summary  of  Significant  Accounting  Policies”  included  in  “Item  8  —  Financial  Statements  and 
Supplementary Data” in this Report regarding the impact of certain recent accounting pronouncements on our Consolidated 
Financial Statements. 

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Item 7A — Quantitative and Qualitative Disclosures About Market Risk 

Foreign Currency Risk 

The majority of our revenue contracts have been denominated in United States Dollars (“USD”). In some circumstances, 
we have priced certain international sales in Euros. The amount of revenue recognized and denominated in Euros amounted 
to $6,000, $11,000, and $0.9 million in 2016, 2015, and 2014, respectively. We experienced a net foreign currency loss of 
approximately $137, $119,000, and $18,000 related to our revenue contracts for the years ended December 31, 2016, 2015, 
and 2014, respectively. Of the $119,000 of foreign currency losses in 2015, $106,000 related to revenue recognized in 2014 
but collected in 2015. 

As we expand our international sales, we expect that a portion of our revenue could continue to be denominated in foreign 
currencies. As a result, our cash and cash equivalents and operating results could be increasingly affected by changes in 
exchange rates. Our international sales and marketing operations incur expense that is denominated in foreign currencies. 
This expense could be materially affected by currency fluctuations. Our exposures are to fluctuations in exchange rates for 
USD  versus  the  Euro,  AED,  CNY,  GBP,  and  CAD.  Changes  in  currency  exchange  rates  could  adversely  affect  our 
consolidated operating results or financial position. Additionally, our international sales and marketing operations maintain 
cash balances denominated in foreign currencies. To decrease the inherent risk associated with translation of foreign cash 
balances into our reporting currency, we do not maintain excess cash balances in foreign currencies. We have not hedged our 
exposure to changes in foreign currency exchange rates because expenses in foreign currencies have been insignificant to 
date, and exchange rate fluctuations have had little impact on our operating results and cash flows. 

Interest Rate Risk and Credit Risk 

We  have  an  investment  portfolio  of  fixed  income  marketable  debt  securities,  including  amounts  classified  as  cash 
equivalents, short-term investments, and long-term investments. At December 31, 2016, all of our investments were classified 
as  short-term  and  totaled  approximately  $39.1  million.  The  primary  objective  of  our  investment  activities  is  to  preserve 
principal and liquidity while at the same time maximizing yields without significantly increasing risk. We invest primarily 
in high-quality short-term and long-term debt instruments of the U.S. government and its agencies as well as high-quality 
corporate issuers. These investments are subject to interest rate fluctuations and will decrease in market value if interest rates 
increase. To minimize the exposure due to adverse shifts in interest rates, we maintain investments with an average maturity 
of less than seven months. A hypothetical 1% increase in interest rates would have resulted in an approximately $0.2 million 
decrease in the fair value of our fixed-income debt securities as of December 31, 2016. 

In addition to interest rate risk, our investments in marketable debt securities are subject to potential loss of value due to 
counterparty  credit  risk.  To  minimize  this  risk,  we  invest  pursuant  to  a  Board-approved  investment  policy.  The  policy 
mandates high credit rating requirements and restricts our exposure to any single corporate issuer by imposing concentration 
limits.  

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Item 8 — Financial Statements and Supplementary Data 

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Board of Directors and Stockholders 
Energy Recovery, Inc. 
San Leandro, California 

We have audited the accompanying consolidated balance sheets of Energy Recovery, Inc. as of December 31, 2016 and 
2015 and the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity, and cash 
flows  for  each  of  the  three  years  in  the period  ended December  31,  2016. In connection  with our  audits  of  the financial 
statements,  we  have  also  audited  the  financial  statement  schedule  (“schedule”)  listed  in  Item  15(a)(2).  These  financial 
statements and schedule are the responsibility of the Company’s management. Our responsibility is to express an opinion on 
these financial statements and schedule based on our audits. 

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts 
and  disclosures  in  the  financial  statements,  assessing  the  accounting  principles  used  and  significant  estimates  made  by 
management, as well as evaluating the overall presentation of the financial statements and schedule. We believe that our 
audits provide a reasonable basis for our opinion. 

In  our  opinion,  the  Consolidated  Financial  Statements  referred  to  above  present  fairly,  in  all  material  respects,  the 
financial position of Energy Recovery, Inc. at December 31, 2016 and 2015, and the results of its operations and its cash 
flows for each of the three years in the period ended December 31, 2016, in conformity with accounting principles generally 
accepted in the United States of America. 

Also, in our opinion, the financial statement schedule, when considered in relation to the basic Consolidated Financial 

Statements taken as a whole, presents fairly, in all material respects, the information set forth therein. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States),  Energy  Recovery,  Inc.’s  internal  control  over  financial  reporting  as  of  December  31,  2016,  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 9, 2017 expressed an unqualified opinion thereon. 

/s/ BDO USA, LLP  

San Jose, California 
March 9, 2017 

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ENERGY RECOVERY, INC. 

CONSOLIDATED BALANCE SHEETS 

December 31, 

2016 

2015 

   (In thousands, except share data 
and par value) 

Current assets: 

ASSETS 

Cash and cash equivalents ..................................................................................................   $ 
Restricted cash ....................................................................................................................     
Short-term investments .......................................................................................................     
Accounts receivable, net of allowance for doubtful accounts of $130 and $166 at 

December 31, 2016 and 2015 ...........................................................................................     
Unbilled receivables, current ..............................................................................................     
Cost and estimated earnings in excess of billings ...............................................................     
Inventories ..........................................................................................................................     
Deferred tax assets, net .......................................................................................................     
Prepaid expenses and other current assets ..........................................................................     
Total current assets .................................................................................................................     
Restricted cash, non-current ...............................................................................................     
Unbilled receivables, non-current .......................................................................................     
Deferred tax assets, non-current .........................................................................................     
Property and equipment, net ...............................................................................................     
Goodwill .............................................................................................................................     
Other intangible assets, net .................................................................................................     
Other assets, non-current ....................................................................................................     
Total assets .............................................................................................................................   $ 

Current liabilities: 

LIABILITIES AND STOCKHOLDERS’ EQUITY 

Accounts payable................................................................................................................   $ 
Accrued expenses and other current liabilities ...................................................................     
Income taxes payable .........................................................................................................     
Accrued warranty reserve ...................................................................................................     
Deferred revenue, current ...................................................................................................     
Current portion of long-term debt .......................................................................................     
Total current liabilities ...........................................................................................................     
Long-term debt, less current portion...................................................................................     
Deferred tax liabilities, non-current ....................................................................................     
Deferred revenue, non-current ............................................................................................     
Other non-current liabilities ................................................................................................     
Total liabilities .......................................................................................................................     

Commitments and Contingencies (Note 9) .........................................................................       

Stockholders’ equity: 

61,364    $ 
2,297      
39,073      

11,759      
190      
1,825      
4,550      
—      
1,311      
122,369      
2,087      
—      
1,270      
8,643      
12,790      
1,900      
4      
149,063    $ 

1,505    $ 
9,019      
16      
406      
6,201      
11      
17,158      
27      
2,233      
63,958      
554      
83,930      

99,931  
1,490  
257  

11,590  
1,879  
—  
6,503  
938  
943  
123,531  
2,317  
6  
—  
10,622  
12,790  
2,531  
2  
151,799  

1,865  
7,808  
2  
461  
5,878  
10  
16,024  
38  
2,360  
69,000  
718  
88,140  

Preferred stock, $0.001 par value; 10,000,000 shares authorized; no shares issued or 

outstanding ......................................................................................................................     

—      

—  

Common stock, $0.001 par value; 200,000,000 shares authorized; 56,884,207 shares 
issued and 53,162,551 shares outstanding at December 31, 2016 and 54,948,235 
shares issued and 52,468,779 shares outstanding at December 31, 2015 .......................     
Additional paid-in capital ...................................................................................................     
Accumulated other comprehensive loss .............................................................................     
Treasury stock, at cost, 3,721,656 shares repurchased at December 31, 2016 and 

2,479,456 shares repurchased at December 31, 2015 .....................................................     
Accumulated deficit ............................................................................................................     
Total stockholders’ equity ......................................................................................................     
Total liabilities and stockholders’ equity................................................................................   $ 

57      
139,676      
(118)     

(16,210)     
(58,272)     
65,133      
149,063    $ 

55  
129,809  
(64) 

(6,835) 
(59,306) 
63,659  
151,799  

See Accompanying Notes to Consolidated Financial Statements 

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ENERGY RECOVERY, INC. 

CONSOLIDATED STATEMENTS OF OPERATIONS 

Years Ended 
December 31, 
2015 
(In thousands, except per share data) 

2016 

2014 

Product revenue ..................................................................................   $
Product cost of revenue ......................................................................     
Product gross profit .........................................................................     

49,715    $ 
17,849      
31,866      

43,671    $
19,111      
24,560      

30,426   
13,713   
16,713   

License and development revenue ......................................................     

5,000      

1,042      

—   

Operating expenses: 

General and administrative .............................................................     
Sales and marketing ........................................................................     
Research and development .............................................................     
Amortization of intangible assets....................................................     
Total operating expenses ....................................................................     

16,626      
9,116      
10,136      
631      
36,509      

19,773      
9,326      
7,659      
635      
37,393      

14,139   
10,525   
9,690   
842   
35,196   

Income (loss) from operations ............................................................     

357      

(11,791)     

(18,483 ) 

Other (expense) income: 

Interest (expense) ............................................................................     
Other non-operating income (expense) ...........................................     
Income (loss) before income taxes .....................................................     
(Benefit from) provision for income taxes .........................................     
Net income (loss) ...............................................................................   $

(3)     
290      
644      
(390)     
1,034    $ 

(42)     
(139)     
(11,972)     
(334)     
(11,638)   $

—   
69   
(18,414 ) 
291   
(18,705 ) 

Income (loss) per share: 

Basic ...............................................................................................   $
Diluted ............................................................................................   $

0.02    $ 
0.02    $ 

(0.22)   $
(0.22)   $

(0.36 ) 
(0.36 ) 

Number of shares used in per share calculations: 

Basic ...............................................................................................     
Diluted ............................................................................................     

52,341      
55,451      

52,151      
52,151      

51,675   
51,675   

See Accompanying Notes to Consolidated Financial Statements 

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ENERGY RECOVERY, INC. 

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) 

Net income (loss) ...............................................................................   $
Other comprehensive (loss) income, net of tax: 

Foreign currency translation adjustments .......................................     
Unrealized (loss) gain on investments  ...........................................     
Other comprehensive (loss) income, net of tax ...........................     
Comprehensive income (loss) ............................................................   $

2016 

Years Ended December 31, 
2015 
(In thousands) 

2014 

1,034    $ 

(11,638)   $

(18,705 ) 

(27)     
(27)     
(54)     
980    $ 

4      
5      
9      
(11,629)   $

39   
(5 ) 
34   
(18,671 ) 

See Accompanying Notes to Consolidated Financial Statements 

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ENERGY RECOVERY, INC. 

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 

Years Ended December 31, 2016, 2015, and 2014 

    Additional     
     Paid-in 
   Common Stock 
   Shares       Amount      Shares       Amount      Capital 

     Treasury Stock 

     Accumulated        
Other 

Total 

     Comprehensive     Accumulated      Stockholders’   
     Income (Loss)      

Equity 

Deficit 

Balance at December 31, 2013 ...............................       53,137    $ 
—      
Net loss ...................................................................      
—      
Unrealized losses on investment ............................      
Foreign currency translation adjustments ...............      
—      
1,261      
Issuance of common stock .....................................      
Repurchase of common stock for treasury .............      
—      
Employee stock-based compensation .....................      
—      
Balance at December 31, 2014 ...............................       54,398      
—      
Net loss ...................................................................      
—      
Unrealized gains on investment .............................      
Foreign currency translation adjustments ...............      
—      
550      
Issuance of common stock .....................................      
Employee stock-based compensation .....................      
—      
Balance at December 31, 2015 ...............................       54,948      
—      
Net Income .............................................................      
—      
Unrealized losses on investment ............................      
Foreign currency translation adjustments ...............      
—      
1,936      
Issuance of common stock .....................................      
Repurchase of common stock for treasury .............      
—      
Employee stock-based compensation .....................      
—      
Balance at December 31, 2016 ...............................       56,884    $ 

(In thousands) 

53      
—      
—      
—      
1      
—      
—      
54      
—      
—      
—      
1      
—      
55      
—      
—      
—      
2      
—      
—      
57      

(1,783 )   $  (4,000)   $  119,932    $ 
—      
—      
—      
—      
—      
—      
2,404      
—      
—      
(2,835)     
2,104      
—      
124,440      
(6,835)     
—      
—      
—      
—      
—      
—      
1,325      
—      
4,044      
—      
129,809      
(6,835)     
—      
—      
—      
—      
—      
—      
6,598      
—      
—      
(9,375)     
3,269      
—      
(3,722 )   $ (16,210)   $  139,676    $ 

—       
—       
—       
—       
(696 )     
—       
(2,479 )     
—       
—       
—       
—       
—       
(2,479 )     
—       
—       
—       
—       
(1,243 )     
—       

See Accompanying Notes to Consolidated Financial Statements 

(107)   $ 
—      
(5)     
39      
—      
—      
—      
(73)     
—      
5      
4      
—      
—      
(64)     
—      
(27)     
(27)     
—      
—      
—      
(118)   $ 

(28,963)   $ 
(18,705)     
—      
—      
—      
—      
—      
(47,668)     
(11,638)     
—      
—      
—      
—      
(59,306)     
1,034      
—      
—      
—      
—      
—      
(58,272)   $ 

86,915  
(18,705) 
(5) 
39  
2,405  
(2,835) 
2,104  
69,918  
(11,638) 
5  
4  
1,326  
4,044  
63,659  
1,034  
(27) 
(27) 
6,600  
(9,375) 
3,269  
65,133  

-47- 

  
  
  
  
    
  
      
  
      
  
      
  
      
  
  
      
  
  
  
    
  
      
  
      
  
      
  
      
  
    
  
  
  
    
  
  
  
  
  
ENERGY RECOVERY, INC. 

CONSOLIDATED STATEMENTS OF CASH FLOWS 

Cash Flows From Operating Activities: 

Net income (loss) ..............................................................................................   $ 

1,034    $ 

(11,638 )   $ 

(18,705 ) 

2016 

Years Ended December 31, 
2015 
(In thousands) 

2014 

Adjustments to reconcile net income (loss) to net cash provided by (used in) 

operating activities: 

Depreciation and amortization ......................................................................     
Stock-based compensation ...........................................................................     
Provision for warranty claims .......................................................................     
Amortization of premiums on investments ...................................................     
Provision for doubtful accounts ....................................................................     
Change in fair value of put options ...............................................................     
Loss (gain) on foreign currency transactions ................................................     
Loss on disposal of fixed assets ....................................................................     
Gain on fair value remeasurement of contingent consideration ....................     
Deferred income taxes ..................................................................................     
Valuation adjustments for excess or obsolete inventory ...............................     
Reversal of accruals related to expired warranties ........................................     
Other non-cash adjustments ..........................................................................     

Changes in operating assets and liabilities: 

Inventories ....................................................................................................     
Unbilled receivables .....................................................................................     
Accrued expenses and other liabilities ..........................................................     
Deferred revenue, product ............................................................................     
Income taxes payable ...................................................................................     
Litigation settlement .....................................................................................     
Accounts receivable......................................................................................     
Accounts payable .........................................................................................     
Prepaid and other assets ................................................................................     
Costs and estimated earnings in excess of billings .......................................     
Deferred revenue, license and development .................................................     
Net cash provided by (used in) operating activities ..............................................     

Cash Flows From Investing Activities: 

Maturities of marketable securities ...............................................................     
Restricted cash ..............................................................................................     
Capital expenditures .....................................................................................     
Purchases of marketable securities ...............................................................     
Net cash (used in) provided by investing activities ...............................................     

Cash Flows From Financing Activities: 

Net proceeds from issuance of common stock ..............................................     
Proceeds from long-term debt ......................................................................     
Payment of contingent consideration ............................................................     
Repayment of long-term debt .......................................................................     
Repurchase of common stock .......................................................................     
Net cash (used in) provided by financing activities ..............................................     
Effect of exchange rate differences on cash and cash equivalents ........................     
Net change in cash and cash equivalents ..............................................................     
Cash and cash equivalents, beginning of year .......................................................     
Cash and cash equivalents, end of year .................................................................   $ 
Supplemental disclosure of cash flow information: 

Cash paid for interest ....................................................................................   $ 
Cash received for income tax refunds ...........................................................   $ 
Cash paid for income taxes ...........................................................................   $ 

Supplemental disclosure of non-cash transactions: 

Purchases of property and equipment in trade accounts payable and 

3,680      
3,263      
208      
174      
76      
33      
13      
—      
—      
(459)     
(361)     
(236)     
(164)     

2,287      
1,695      
1,259      
280      
14      
—      
(244)     
(360)     
(402)     
(1,825)     
(5,000)     
4,965      

7,535      
(577)     
(1,112)     
(46,552)     
(40,706)     

6,600      
—      
—      
(10)     
(9,375)     
(2,785)     
(41)     
(38,567)     
99,931      
61,364    $ 

3    $ 
2    $ 
51    $ 

3,838       
4,059       
135       
162       
112       
58       
1       
—       
—       
(326 )     
(250 )     
(395 )     
(35 )     

1,951       
(128 )     
(708 )     
343       
(3 )     
(1,700 )     
(743 )     
48       
316       
—       
73,958       
69,055       

12,925       
1,665       
(572 )     
—       
14,018       

1,326       
55       
—       
(7 )     
—       
1,374       
(17 )     
84,430       
15,501       
99,931     $ 

42     $ 
4     $ 
24     $ 

accrued expenses and other liabilities ........................................................   $ 

66    $ 

43     $ 

See Accompanying Notes to Consolidated Financial Statements 

-48- 

4,028   
2,104   
156   
453   
299   
—   
(153 ) 
38   
(149 ) 
315   
320   
—   
375   

(3,569 ) 
4,882   
1,864   
(331 ) 
(18 ) 
—   
4,002   
628   
(254 ) 
—   
—   
(3,715 ) 

6,027   
3,306   
(2,562 ) 
(273 ) 
6,498   

2,405   
—   
(1,375 ) 
—   
(2,835 ) 
(1,805 ) 
152   
1,130   
14,371   
15,501   

—   
1   
35   

1   

  
  
  
  
  
  
  
    
    
  
  
  
  
      
        
        
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
      
        
        
  
      
        
        
  
  
  
ENERGY RECOVERY, INC. 

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

Note 1 — Description of Business 

Energy Recovery, Inc. (the “Company,” “Energy Recovery,” “our,” “us,” or “we”) is an energy solutions provider to 
industrial  fluid  flow  markets  worldwide.  Our  core  competencies  are  fluid  dynamics  and  advanced  material  science.  Our 
products make industrial processes more operating and capital expenditure efficient. Our solutions convert wasted pressure 
energy into a reusable asset and preserve or eliminate pumping technology in hostile processing environments. Our solutions 
are marketed and sold in fluid flow markets, such as water, oil & gas, and chemical processing. 

Note 2 —Accounting Policies 

Basis of Presentation 

Our Consolidated Financial Statements include the accounts of Energy Recovery, Inc. and its wholly-owned subsidiaries. 

All significant intercompany accounts and transactions have been eliminated in consolidation. 

Use of Estimates 

The preparation of Consolidated Financial Statements in conformity with U.S. generally accepted accounting principles 
(“U.S. GAAP”) requires our management to make judgments, assumptions, and estimates that affect the amounts reported in 
our Consolidated Financial Statements and accompanying Notes. The accounting policies that reflect our more significant 
estimates and judgments and that we believe are the most critical to aid in fully understanding and evaluating our reported 
financial results are revenue recognition, including percentage-of-completion accounting for oil & gas projects; allowance 
for doubtful accounts; allowance for product warranty; valuation of stock options; valuation and impairment of goodwill and 
acquired  intangible  assets;  useful  lives  for  depreciation  and  amortization;  valuation  adjustments  for  excess  and  obsolete 
inventory; deferred taxes and valuation allowances on deferred tax assets; and evaluation and measurement of contingencies, 
including contingent consideration. Those estimates could change, and as a result, actual results could differ materially from 
those estimates. For example, the Company records impairment losses on long-lived assets used in operations when events 
and circumstances indicate that long-lived assets might be impaired and the undiscounted cash flows estimated to be generated 
by those assets are less than the carrying amounts of those assets. The Company’s estimate of undiscounted cash flows, at 
December 31, 2016 and 2015 indicated that such carrying amounts were expected to be recovered. Nonetheless, it is possible 
that the estimate of undiscounted cash flows may change in the future resulting in the need to write down those assets to fair 
value. 

Cash and Cash Equivalents 

We consider all highly liquid investments with an original or remaining maturity of three months or less at the time of 
purchase  to  be  cash  equivalents.  Cash  equivalents  are  stated  at  cost,  which  approximates  fair  value.  Our  cash  and  cash 
equivalents are maintained primarily in demand deposit accounts with large financial institutions and in institutional money 
market funds. We frequently monitor the creditworthiness of the financial institutions and institutional money market funds 
in which we invest our surplus funds. We have not experienced any credit losses from our cash investments. 

Allowances for Doubtful Accounts 

We record a provision for doubtful accounts based on historical experience and a detailed assessment of the collectability 
of our accounts receivable. In estimating the allowance for doubtful accounts, we consider, among other factors, the aging of 
the accounts receivable, our historical write-offs, the credit worthiness of each customer, and general economic conditions. 
Account balances are charged off against the allowance when we believe that it is probable that the receivable will not be 
recovered. Actual write-offs may be in excess of our estimated allowance. 

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Short-Term and Long-Term Investments 

Our  short-term  and  long-term  investments  consist  primarily  of  investment-grade  debt  securities,  all  of  which  are 
classified as available-for-sale. Available-for-sale securities are carried at fair value. Amortization or accretion of premium 
or discount is included in other income (expense) on the Consolidated Statements of Operations. Changes in the fair value of 
available-for-sale securities are reported as a component of accumulated other comprehensive loss within stockholders’ equity 
on the Consolidated Balance Sheet. Realized gains and losses on the sale of available-for-sale securities are determined by 
specific identification of the cost basis of each security. Short-term investments mature within twelve months. Long-term 
investments generally will mature within three (3) years. 

Inventories 

Inventories are stated at the lower of cost (using the first-in, first-out “FIFO” method) or market. We calculate inventory 
valuation adjustments for excess and obsolete inventory based on current inventory levels, movement, expected useful lives, 
and estimated future demand of the products and spare parts. 

Property and Equipment 

Property and equipment is recorded at cost and reduced by accumulated depreciation. Depreciation expense is recognized 
over the estimated useful lives of the assets using the straight-line method. Estimated useful lives are three (3) to ten (10) 
years. Certain equipment used in the development and manufacturing of ceramic components is depreciated over estimated 
useful lives of up to ten (10) years. Leasehold improvements represent remodeling and retrofitting costs for leased office and 
manufacturing space and are depreciated over the shorter of either the estimated useful lives or the term of the lease. Software 
purchased for internal use consists primarily of amounts paid for perpetual licenses to third-party software providers and 
installation costs. Software is depreciated over the estimated useful lives of three (3) to five (5) years. Estimated useful lives 
are  periodically  reviewed,  and  when  appropriate,  changes  are  made  prospectively.  When  certain  events  or  changes  in 
operating conditions occur, asset lives may be adjusted and an impairment assessment may be performed on the recoverability 
of the carrying amounts. Maintenance and repairs are charged directly to expense as incurred. 

Goodwill and Other Intangible Assets 

The  purchase  price  of  an  acquired  company  is  allocated  between  intangible  assets  and  the  net  tangible  assets  of  the 
acquired business with the residual purchase price recorded as goodwill. The determination of the value of the intangible 
assets acquired involves certain judgments and estimates. These judgments can include, but are not limited to, the cash flows 
that an asset is expected to generate in the future and the appropriate weighted average cost of capital. 

Acquired intangible assets with determinable useful lives are amortized on a straight-line or accelerated basis over the 
estimated periods benefited, ranging from one (1) to twenty (20) years. Acquired intangible assets with contractual terms are 
amortized over their respective legal or contractual lives. Customer relationships and other non-contractual intangible assets 
with determinable lives are amortized over periods ranging from five (5) to twenty (20) years.  

We evaluate the recoverability of intangible assets by comparing the carrying amount of an asset to estimated future net 
undiscounted cash flows generated by the asset. If such assets are considered to be impaired, the impairment recognized is 
measured as the amount by which the carrying amount of the assets exceeds the fair value of the assets. The evaluation of 
recoverability involves estimates of future operating cash flows based upon certain forecasted assumptions, including, but 
not limited to, revenue growth rates, gross profit margins, and operating expenses over the expected remaining useful life of 
the related asset. A shortfall in these estimated operating cash flows could result in an impairment charge in the future. 

Goodwill is not amortized, but is evaluated annually for impairment at the reporting unit level or when indicators of a 
potential impairment are present. We estimate the fair value of the reporting unit using the discounted cash flow and market 
approaches. Forecast of future cash flows are based on our best estimate of future net sales and operating expenses, based 
primarily on expected category expansion, pricing, market segment, and general economic conditions.  

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As  of  December  31,  2016  and  2015,  acquired  intangibles,  including  goodwill,  relate  to  the  acquisition  of  Pump 
Engineering, LLC during the fourth quarter of 2009. See Note 6 — “Goodwill and Intangible Assets” for further discussion 
of intangible assets. 

Fair Value of Financial Instruments 

Our  financial  instruments  include  cash  and  cash  equivalents,  restricted  cash,  investments  in  marketable  securities, 
accounts  receivable,  accounts  payable,  and  debt.  The  carrying  amounts  for  these  financial  instruments  reported  in  the 
Consolidated Balance Sheets approximate their fair values. See Note 7 — “Fair Value Measurements” for further discussion 
of fair value. 

Revenue Recognition  

Product and service revenue recognition – Water Segment 

We recognize revenue when the earnings process is complete, as evidenced by a written agreement with the customer, 
transfer of title, fixed pricing that is determinable, and collection that is reasonably assured. Transfer of title typically occurs 
upon shipment of the equipment pursuant to a written purchase order or contract. The portion of the sales agreement related 
to the field services and training for commissioning of our devices in a desalination plant is deferred until we have performed 
such  services.  We  regularly  evaluate  our  revenue  arrangements  to  identify  deliverables  and  to  determine  whether  these 
deliverables are separable into multiple units of accounting.  

Under our revenue recognition policy, evidence of an arrangement is met when we have an executed purchase order, 
sales order, or stand-alone contract. Typically, smaller projects utilize sales or purchase orders that conform to standard terms 
and conditions. 

The specified product performance criteria for our PX® energy recovery devices (“ERDs”) pertain to the ability of our 
product to meet its published performance specifications and warranty provisions, which our products have demonstrated on 
a consistent basis. This factor, combined with historical performance metrics, provides our management with a reasonable 
basis to conclude that the PX ERDs will perform satisfactorily upon commissioning of the plant. To ensure this successful 
product  performance,  we  provide  service  consisting  principally  of  supervision  of  customer  personnel  and  training  to  the 
customers  during  the  commissioning  of  the  plant.  The  installation  of  the  PX  ERDs  is  relatively  simple,  requires  no 
customization, and is performed by the customer under the supervision of our personnel. We defer the value of the service 
and training component of the contract and recognize such revenue as services are rendered. Based on these factors, our 
management has concluded that, for sale of PX ERDs, as well as for turbochargers and pumps, delivery and performance 
have been completed upon shipment or delivery when title transfers based on the shipping terms. 

We perform an evaluation of customer credit worthiness on an individual contract basis to assess whether collectability 
is reasonably assured. As part of this evaluation, our management considers many factors about the individual customer, 
including the underlying financial strength of the customer and/or partnership consortium and management’s prior history or 
industry-specific knowledge about the customer and its supplier relationships. For smaller projects, we require the customer 
to remit payment generally within thirty (30) to ninety (90) days after product delivery. In some cases, if credit worthiness 
cannot be determined, prepayment or other security is required. 

We establish separate units of accounting for contracts, as our contracts with customers typically include one or both of 

the deliverables, products or commissioning, and there is no right of return under the terms of the contract. 

Commissioning includes supervision of the installation, start-up, and training to ensure that the installation performed 
by the customer which, is relatively simple and straightforward, is completed consistent with the recommendations under the 
factory warranty. The commissioning services’ element of our contracts represents an incidental portion of the total contract 
price and the allocable consideration for these services relative to that for the underlying products has been well under 1% of 
any  arrangement.  Commissioning  is  often  bundled  into  the  large  stand-alone  contracts,  and  we  frequently  sell  products 
without commissioning since our product can be easily installed in a plant without supervision. These facts and circumstances 
validate that the delivered element has value on a stand-alone basis and should be considered a separate unit of accounting. 

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Having established separate units of accounting, we then allocate amounts to each unit of accounting. With respect to 
products, we have established vendor specific objective evidence (“VSOE”) based on the price at which such products are 
sold separately without commissioning services. With respect to commissioning, we charge out our engineers for field visits 
to customers based on a stand-alone standard daily field service charge as well as a flat service rate for travel, if applicable. 
This has been determined to be the VSOE of the service based on stand-alone sales of other comparable professional services 
at consistent pricing.  

The  amount  allocable  to  the  delivered  unit  of  account  (in  our  case  the  product)  is  limited  to  the  amount  that  is  not 
contingent upon the delivery of additional items or meeting specified performance conditions. We adhere to consistent pricing 
in both stand-alone sale of products and professional services and the contractual pricing of products and commissioning of 
services in bundled arrangements. 

For large projects, stand-alone contracts are utilized. For these contracts, consistent with industry practice, our customers 
typically require their suppliers, including Energy Recovery, to accept contractual holdback provisions (also referred to as a 
retention payment) whereby the final amounts due under the sales contract are remitted over extended periods of time or 
alternatively, stand-by letters of credit are issued to guarantee performance. These retention payments are generally 10% or 
less  of  the  total  contract  amount  and  are  due  and  payable  when  the  customer  is  satisfied  that  certain  specified  product 
performance  criteria  have been  met  upon  commissioning of  the desalination plant, which  may  be  up to  twenty-four  (24) 
months from the date of product delivery as described further below. 

Under stand-alone contracts, the usual payment arrangements are summarized as follows: 

●  an advance payment due upon execution of the contract, typically 10% to 20% of the total contract amount. This advance
payment is accounted for as deferred revenue until shipment or when products are delivered to the customer, depending
on the Incoterms and transfer of title; 

●  a payment ranging from 50% to 70% of the total contract is typically due upon delivery of the product. This payment is
often divided into two parts. The first part, which is due thirty (30) to sixty (60) days following delivery of the product
and documentation, is invoiced upon shipment when the product revenue is recognized and results in an open accounts
receivable with the customer. The second part is typically due ninety (90) to one hundred twenty (120) days following
product delivery and documentation. This payment is booked to unbilled receivables upon shipment when the product
revenue is recognized, and it is invoiced to the customer upon notification that the equipment has been received or when
the time period has expired. We have no performance obligation to complete to be legally entitled to this payment. It is
invoiced based on the passage of time. 

●  a  final  retention  payment  of  generally  10%  or  less  of  the  contract  amount  is  due  either  at  the  completion  of  plant
commissioning  or  upon  the  issuance  of  a  stand-by  letter  of  credit,  which  is  typically  issued  up  to  twenty-four  (24) 
months from the delivery date of products and documentation. This payment is recorded to unbilled receivables upon
shipment  when  the  product  revenue  is  recognized,  and  it  is  invoiced  to  the  customer  when  it  is  determined  that
commissioning is complete or the stand-by letter of credit has been issued. This payment is not contingent upon the
delivery of commissioning services. The Company had no performance obligation to complete to be legally entitled to 
this payment. It is invoiced based on the passage of time. 

We do not provide our customers with a right of product return; however, we will accept returns of products that are 
deemed to be damaged or defective when delivered that are covered by the terms and conditions of the product warranty. 
Product returns have not been significant. 

Shipping and handling charges billed to customers are included in product revenue. The cost of shipping to customers is 

included in cost of revenue. 

License, milestone payment, and royalty revenue recognition – Oil & Gas Segment 

License and development revenue is comprised of the amortization of the upfront non-refundable $75 million exclusivity 
fee received in connection with the VorTeq License Agreement entered into with Schlumberger Technology Corporation (the 
“VorTeq Licensee”). See Note 16 – VorTeq License Agreement. The VorTeq License Agreement comprises a fifteen-year 
exclusivity license for our VorTeqTM technology (“VorTeq”), milestone payments upon achievement of successful tests in 
accordance with the Key Performance Indicators (“KPIs”), defined in the license agreement, and, after commercialization is 
achieved,  royalty  payments  for  the  supply  and  servicing  of  certain  components  of  the  VorTeq.  All  payments  are  non-
refundable.  

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We recognize license and development revenue in accordance with ASC 605 “Revenue Recognition,” subtopic ASC 
605-25  “Revenue  with  Multiple  Element  Arrangements”  and  subtopic  ASC  605-28  “Revenue  Recognition-Milestone 
Method,”  which  provides  accounting  guidance  for  revenue  recognition  for  arrangements  with  multiple  deliverables  and 
guidance  on  defining  the  milestone  and  determining  when  the  use  of  the  milestone  method  of  revenue  recognition  is 
appropriate, respectively. 

For  multiple-element  arrangements,  each  deliverable  is  accounted  for  as  a  separate  unit  of  accounting  if  both  the 
following criteria are met: (1) the delivered item or items have value to the customer on a standalone basis and (2) for an 
arrangement that includes a general right of return relative to the delivered item(s), delivery or performance of the undelivered 
item(s) is considered probable and substantially in our control. Contingent deliverables within multiple element arrangements 
are excluded from the evaluation of the units of accounting. Non-refundable, upfront license fees where we have continuing 
obligation  to  perform  are  recognized  over  the  period  of  the  continuing  performance  obligation.  The  VorTeq  License 
Agreement was determined to include a single unit of accounting. The initial upfront fee of $75 million is recognized on a 
straight-line  basis  over  the  fifteen-year  term  of  the  arrangement  based  on  the  performance  period  of  the  last  or  final 
deliverables, which include the license and support.  

We recognize revenue from milestone payments when: (i) the milestone event is substantive and its achievability has 
substantive uncertainty at the inception of the agreement, and (ii) it does not have ongoing performance obligations related 
to the achievement of the milestone earned. Milestone payments are considered substantive if all of the following conditions 
are met, the milestone payment: (a) is commensurate with either the Company’s performance subsequent to the inception of 
the arrangement to achieve the milestone or the enhancement of the value of the delivered item or items as a result of a 
specific outcome resulting from the Company’s performance subsequent to the inception of the arrangement to achieve the 
milestone; (b) relates solely to past performance; and (c) is reasonable relative to all of the deliverables and payment terms 
(including other potential milestone consideration) within the arrangement. The VorTeq License Agreement includes two 
substantive milestones of $25 million each due on achievement of successful tests in accordance with KPIs. No revenues 
associated with achievement of the milestones have been recognized to date. 

Percentage-of-completion revenue recognition – Oil & Gas Segment 

IsoBoost and IsoGen systems are highly engineered, customized solutions that are designed and manufactured over an 
extended  period  of  time  and  are  built  specifically  to  meet  a  customer’s  specifications.  It  is  the  Company’s  position  that 
percentage-of-completion  method  of  accounting  is  appropriate  for  IsoBoost  and  IsoGen  systems  given  the  facts  and 
circumstances of these projects. In the event that a purchase order for an IsoBoost or IsoGen does not meet these facts and 
circumstances, then percentage-of-completion method of accounting does not apply. 

Revenue from fixed price contracts is recognized using the percentage-of-completion method of accounting in the ratio 
of  costs  incurred  to  estimated  final  costs.  Contract  costs  include  all  direct  material  and  labor  costs  related  to  contract 
performance.  Pre-contract  costs  with  no  future  benefit  are  expensed  in  the  period  in  which  they  are  incurred.  Since  the 
financial reporting of these contracts depends on estimates, which are assessed continually during the term of the contract, 
recognized revenues and profit are subject to revisions as the contract progresses to completion. Revisions in profit estimates 
are reflected in the period in which the facts that give rise to the revisions become known. If material, the effects of any 
changes in estimates are disclosed in the notes to the consolidated financial statements. When estimates indicate that a loss 
will be incurred on a contract, a provision for the expected loss is recorded in the period in which the loss becomes evident. 
No loss has been incurred to date. Revenue is recognized only to the extent costs have been recognized in the same period. 

Research and Development Expense 

Research and development expenses consist of costs incurred for internal projects and for technology licensed to third 
parties. These costs include our direct and research-related overhead expenses, which include salaries and other personnel-
related expenses (including stock-based compensation), occupancy-related costs, depreciation of facilities, as well as external 
costs for equipment and supplies. Costs to acquire technologies that are utilized in research and development and that have 
no alternative future use are expensed when incurred. All research and development costs are expensed as incurred and are 
included in operating expenses. 

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Warranty Costs 

We sell products with a limited warranty for a period ranging from eighteen (18) months to five (5) years. We accrue for 
warranty costs based on estimated product failure rates, historical activity, and expectations of future costs. Periodically, we 
evaluate and adjust the warranty costs to the extent that actual warranty costs vary from the original estimates. 

During the year ended December 31, 2015, we adjusted previously established warranty reserves. The adjustment related 

to expired warranties which increased gross profit and reduced net loss by $0.4 million. 

Stock-based Compensation 

We measure and recognize stock-based compensation expense based on the fair value measurement for all stock-based 
awards  made  to  our  employees  and  directors  —  including  restricted  stock  units  (“RSUs”),  restricted  shares  (“RS”),  and 
employee stock options — over the requisite service period (typically the vesting period of the awards). The fair value of 
RSUs and RS is based on our stock price on the date of grant. The fair value of stock options is calculated on the date of grant 
using the Black-Scholes option pricing model, which requires a number of complex assumptions including expected life, 
expected  volatility,  risk-free interest  rate,  and dividend  yield.  The  estimation  of  awards  that  will  ultimately  vest  requires 
judgment,  and  to  the  extent  that  actual  results  or  updated  estimates  differ  from  our  current  estimates,  such  amounts  are 
recorded  as  a  cumulative  adjustment  in  the  period  in  which  the  estimates  are  revised.  See  Note  12  —  “Stock-based 
Compensation” for further discussion of stock-based compensation. 

Foreign Currency 

Our reporting currency is the U.S. dollar. The functional currency of our Ireland subsidiaries is the U.S. dollar, while the 
functional currency of our other foreign subsidiaries is their respective local currencies. The asset and liability accounts of 
our foreign subsidiaries are translated from their local currencies at the rates in effect on the balance sheet date. Revenue and 
expenses  are  translated  at  average  rates  of  exchange  prevailing  during  the  period.  Gains  and  losses  resulting  from  the 
translation of our subsidiary balance sheets are recorded as a component of accumulated other comprehensive loss. Gains and 
losses  from  foreign  currency  transactions  are  recorded  in  other  income  (expense)  in  the  Consolidated  Statements  of 
Operations. 

Income Taxes 

Current and non-current tax assets and liabilities are based upon an estimate of taxes refundable or payable for each of 
the jurisdictions in which we are subject to tax. In the ordinary course of business, there is inherent uncertainty in quantifying 
income tax positions. We assess income tax positions and record tax benefits for all years subject to examination based upon 
our evaluation of the facts, circumstances, and information available at the reporting dates. For those tax positions where it 
is more likely than not that a tax benefit will be sustained, we record the largest amount of tax benefit with a greater than 
50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant 
information. For those income tax positions where it is not more likely than not that a tax benefit will be sustained, no tax 
benefit  is  recognized  in  the  financial  statements.  When  applicable,  associated  interest  and  penalties  are  recognized  as  a 
component of income tax expense. Accrued interest and penalties are included within the related tax asset or liability on the 
Consolidated Balance Sheets. 

Deferred income taxes are provided for temporary differences arising from differences in bases of assets and liabilities 
for tax and financial reporting purposes. Deferred income taxes are recorded on temporary differences using enacted tax rates 
in effect for the year in which the temporary differences are expected to reverse. The effect of a change in tax rates on deferred 
tax assets and liabilities is recognized in income in the period that includes the enactment date. Deferred tax assets are reduced 
by a valuation allowance when, in the opinion of management, it is more likely than not that some portion or all of the deferred 
tax assets will not be realized. Significant judgment is required in determining whether and to what extent any valuation 
allowance is needed on our deferred tax assets. In making such a determination, we consider all available positive and negative 
evidence including recent results of operations, scheduled reversals of deferred tax liabilities, projected future income, and 
available tax planning strategies. As of December 31, 2016, we have a valuation allowance of approximately $21.1 million 
to reduce our deferred income tax assets to the amount expected to be realized. See Note 10 — “Income Taxes” for further 
discussion of the tax valuation allowance. 

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We have recorded a valuation allowance against all of our U.S. deferred tax assets as of December 31, 2016. We intend 
to continue maintaining a full valuation allowance on our U.S. deferred tax assets until there is sufficient evidence to support 
the reversal of all or some portion of this allowance. However, given our current earnings and anticipated future earnings, we 
believe that there is a reasonable possibility that within the next twelve (12) months, sufficient positive evidence may become 
available to allow us to reach a conclusion that a significant portion of the valuation allowance will no longer be needed. 
Release of the valuation allowance would result in the recognition of certain deferred tax assets and a decrease in income tax 
expense for the period the release is recorded. However, the exact timing and amount of the valuation allowance release are 
subject to change on the basis of the level of profitability that we are able to actually achieve. 

Our operations are subject to income and transaction taxes in the U.S. and in foreign jurisdictions. Significant estimates 
and judgments are required in determining our worldwide provision for income taxes. Some of these estimates are based on 
interpretations of existing tax laws or regulations. The ultimate amount of tax liability may be uncertain as a result. 

Recent Accounting Pronouncements 

Other than as described below, no new accounting pronouncement issued or effective during the fiscal year has had or 

is expected to have a material impact on our Consolidated Financial Statements. 

In November 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 
No.  2015-17,  Income  Taxes  (Topic  740)  -  Balance  Sheet  Classification  of  Deferred  Taxes.  ASU  2015-17  eliminates  the 
current requirement to present deferred tax assets and liabilities as current and noncurrent in a classified statement of financial 
position.  Instead,  ASU  2015-17  requires  that  deferred  tax  assets  and  liabilities  be  classified  as  noncurrent  in  a  classified 
statement of financial position. We adopted this accounting standard update early, on a prospective basis, at the beginning of 
the second quarter of 2016 to simplify presentation of deferred taxes. The adoption at the beginning of the second quarter of 
2016 resulted in a $1.1 million decrease in current deferred tax assets, a $0.8 million increase in non-current deferred tax 
assets, and a $0.3 million decrease in non-current deferred tax liabilities. No prior periods were retrospectively adjusted. 

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). The update 
requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or 
services to customers and will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. 
The update also requires more detailed disclosures to enable users of financial statements to understand the nature, amount, 
timing,  and  uncertainty  of  revenue  and  cash  flows  arising  from  contracts  with  customers.  ASU  2014-09  was  originally 
effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting 
period. On July 9, 2015, the FASB voted to approve a one-year deferral of the effective date of ASU 2014-09. Additionally, 
the FASB decided to permit early adoption, but not before the original effective date (that is, annual periods beginning after 
December 15, 2016). 

In 2016, the FASB issued ASU No. 2016-08, Revenue from Contracts with Customers (Topic 606: Principal versus 
Agent Considerations (Reporting Revenue Gross versus Net) and ASU No. 2016-10, Revenue from Contracts with Customers 
(Topic 606) Identifying Performance Obligations and Licensing, respectively. The amendments in these updates are intended 
to improve the operability and understandability of the implementation guidance on principal versus agent considerations and 
to clarify two aspects of Topic 606: identifying performance obligations and the licensing implementation guidance, while 
retaining the related principles for those areas. The effective date and transition requirements for both ASU 2016-08 and ASU 
2016-10 are the same as those for ASU 2014-09 as deferred. 

We expect to adopt the guidance of ASU 2014-09 as of January 1, 2018. ASU 2014-09 permits the use of either the full 
retrospective or cumulative effect transition (modified retrospective) method. We formed a project team, which has operated 
since 2014, to evaluate internal processes and to implement the standard. We are still in the process of deciding whether we 
will use the full retrospective method or the modified retrospective method, and we have not yet selected a transition method. 
We  continue  to  evaluate  the  effect  that  ASU  2014-09  will  have  on  our  financial  statements  and  related  disclosures.  For 
revenue streams related to water desalination products, we do not expect the impact to be material, however, for transactions 
accounted for under the percentage-of-completion method, as well as some long-term contracts including our license and 
development revenue, there may be a material difference in the timing of revenue recognition under the new standard. At this 
time, we are still performing our analysis and we will continue to assess the impact on our revenue streams in 2017. 

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In January 2016, the FASB issued ASU No. 2016-01, Financial Instruments - Overall (Subtopic 825-10): Recognition 
and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 modifies certain aspects of the recognition, 
measurement, presentation, and disclosure of financial instruments. For public entities, ASU 2016-01 is effective for fiscal 
years, and interim periods within those years, beginning after December 15, 2017, and early adoption is permitted. We do not 
expect the adoption of this standard to have a material impact on our financial statements. 

In February 2016, the FASB issued ASU No. 2016-02, Leases (Topic 842). ASU 2016-02 impacts any entity that enters 
into  a  lease  with  some  specified  scope  exceptions.  The  guidance  updates  and  supersedes  Topic  840,  Leases.  For  public 
entities, ASU 2016-02 is effective for fiscal years, and interim periods within those years, beginning after December 15, 
2018, and early adoption is permitted. We are in the preliminary phases of assessing the effect of this guidance. While this 
assessment continues, we have not yet selected a transition date nor have we determined the impact of this guidance on our 
financial statements. 

In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (Topic 718). ASU 2016-09 
requires excess tax benefits and tax deficiencies (the difference between the deduction for tax purposes and the compensation 
cost recognized for financial reporting purposes) to be recognized as income tax expense or benefit in the income statement. 
Previously,  these  amounts  were  recognized  directly  to  shareholder’s  equity.  The  excess  tax  benefit  from  share-based 
compensation, previously classified as a financing activity, will be classified as an operating activity. Additionally, cash paid 
when directly withholding shares on an employee’s behalf for tax withholding purposes, will be classified as a financing 
activity. For public entities, ASU 2016-09 is effective for annual periods beginning after December 15, 2016, and interim 
periods within those annual periods. We plan to adopt this guidance effective January 1, 2017. The guidance requiring excess 
tax benefits and tax deficiencies in the income statement are allowed to be adopted prospectively and therefore will not have 
an impact on past financial statements. The guidance permits the presentation of excess tax benefits on the statement of cash 
flows either prospectively or retrospectively. We intend to adopt all aspects of this guidance on a prospective basis. The other 
aspects of this guidance will not have a material impact on our financial statements. 

In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230) – Classification of Certain 
Cash Receipts and Cash Payments. ASU 2016-15 impacts all entities that are required to present a statement of cash flows 
under Topic 230. The amendment provides guidance on eight specific cash flow issues. For public entities, ASU 2016-15 is 
effective  for  fiscal  periods  beginning  after  December  15,  2017  and  interim  periods  within  those  years.  Early  adoption  is 
permitted  and  should  be  applied  using  a  retrospective  transition  method  to  each  period  presented.  We  do  not  expect  the 
adoption of this standard to have a material impact on our financial statements.  

In October 2016, the FASB issued ASU 2016-16, Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than 
Inventory. ASU 2016-16 requires recognition of the current and deferred income tax effects of an intra-entity asset transfer, 
other than inventory, when the transfer occurs, as opposed to current GAAP, which requires companies to defer the income 
tax effects of intra-entity asset transfers until the asset has been sold to an outside party. The income tax effects of intra-entity 
inventory transfers will continue to be deferred until the inventory is sold. ASU 2016-16 is effective on January 1, 2018, with 
early adoption permitted. The update is required to be adopted on a modified retrospective basis with the cumulative-effect 
adjustment recorded to retained earnings as of the beginning of the period of adoption. We do not expect the adoption of this 
standard to have a material impact on our financial statements.  

In November 2016, the FASB issued ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. ASU 2016-
18  is  intended  to  reduce  diversity  in  practice  in  the  classification  and  presentation  of  changes  in  restricted  cash  on  the 
Consolidated Statement of Cash Flows. ASU 2016-18 requires that the Consolidated Statement of Cash Flows explain the 
change in total cash and equivalents and amounts generally described as restricted cash or restricted cash equivalents when 
reconciling the beginning-of-period and end-of-period total amounts. The standard also requires reconciliation between the 
total cash and equivalents and restricted cash presented on the Consolidated Statement of Cash Flows and the cash and cash 
equivalents balance presented on the Consolidated Balance Sheet. ASU 2016-18 is effective retrospectively on January 1, 
2018, with early adoption permitted. We have not yet selected a transition date. Other than presentation, we do not expect the 
adoption of this standard to have a material impact on our financial statements. 

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In January 2017, the FASB issued ASU No. 2017-04, Goodwill and Other (Topic 350): Simplifying the Test for Goodwill 
Impairment. ASU 2017-04 eliminates Step 2 of the goodwill impairment test and allows for the determination of impairment 
by comparing the fair value of the reporting unit with its carrying amount. The amendments in this updates should be applied 
on a prospective basis. For public entities which are Securities and Exchange Commission filers, this amendment is effective 
for annual or any interim goodwill impairment tests in fiscal years beginning after December 15, 2019. Early adoption is 
permitted for testing dates after January 1, 2017. We do not expect the adoption of this standard to have a material impact on 
our financial statements. 

Note 3 — Income (Loss) Per Share 

Net income (loss) is divided by the weighted average number of common shares outstanding during the year to calculate 
basic net income (loss) per common share. Diluted net income (loss) per common share reflects the potential dilution that 
would occur if outstanding stock options to purchase common stock were exercised for common stock, using the treasury 
stock method, and the common stock underlying outstanding restricted award was issued. The following table sets forth the 
computation of basic and diluted income (loss) per share (in thousands, except per share data): 

Years Ended December 31, 
2015 

2016 

2014 

Numerator: 

Net income (loss) ............................................................................   $

1,034    $ 

(11,638)   $

(18,705 ) 

Denominator: 

Basic weighted average common shares outstanding .....................     
Weighted average effect of dilutive stock awards ..........................     
Diluted weighted average common shares outstanding ..................     

52,341      
3,110      
55,451      

52,151      
—      
52,151      

Net income (loss) per share - basic .....................................................   $
Net income (loss) per share - diluted ..................................................   $

0.02    $ 
0.02    $ 

(0.22)   $
(0.22)   $

51,675   
—   
51,675   

(0.36 ) 
(0.36 ) 

The following potential common shares were not included in the computation of diluted net income (loss) per share as 

their effect would have been anti-dilutive (in thousands): 

Restricted awards ...............................................................................     
Warrants .............................................................................................     
Stock options ......................................................................................     

183      
—      
2,804      

—       
—       
7,198       

28   
200   
6,276   

Years Ended December 31, 
2015 

2016 

2014 

Note 4 — Other Financial Information 

Restricted Cash 

As  of  December  31,  2016,  we  have  pledged  cash  in  connection  with  stand-by  letters  of  credit.  We  have  deposited 

corresponding amounts into interest-bearing accounts at financial institutions for these items as follows (in thousands): 

Collateral for stand-by letters of credit ............................................................................   $
Current restricted cash .................................................................................................   $

Collateral for stand-by letters of credit ............................................................................   $
Non-current restricted cash ..........................................................................................   $
Total restricted cash ........................................................................................................   $

December 31, 

2016 

2015 

2,297     $
2,297     $

2,087     $
2,087     $
4,384     $

1,490  
1,490  

2,317  
2,317  
3,807  

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Accounts Receivable 

Accounts receivable consisted of the following (in thousands):  

Accounts receivable ........................................................................................................   $
Less: allowance for doubtful accounts ............................................................................     
Accounts receivable, net ..............................................................................................   $

11,889     $
(130 )     
11,759     $

11,756  
(166) 
11,590  

December 31, 

2016 

2015 

Unbilled Receivables 

We currently have unbilled receivables pertaining to customer contractual holdback provisions, whereby we will invoice 
the final retention payment(s) due under certain sales contracts in the next six (6) to twenty-four (24) months. The customer 
holdbacks represent amounts intended to provide a form of security for the customer; accordingly, these receivables have not 
been discounted to present value. 

Unbilled receivables consisted of the following (in thousands): 

Unbilled receivables, current ...........................................................................................   $
Unbilled receivables, non-current ...................................................................................     
Total unbilled receivables ............................................................................................   $

190     $
—       
190     $

1,879  
6  
1,885  

December 31, 

2016 

2015 

Cost and Estimated Earnings in Excess of Billings 

Cost and estimated earnings on uncompleted contracts consisted of the following (in thousands): 

December 31, 

2016 

2015 

Estimated earnings to date ...............................................................................................   $
Estimated costs to date ....................................................................................................     
Subtotal ....................................................................................................................     
Net billings to date ..........................................................................................................     
Total .........................................................................................................................   $

2,170     $ 
1,496       
674       
82       
756     $ 

Included in accompanying balance sheets: 

Cost and estimated earnings in excess of billings ........................................................   $
Unbilled project costs ..................................................................................................     
Total .........................................................................................................................   $

1,825     $ 
(1,069 )     
756     $ 

—  
—  
—  
—  

—  
—  
—  

Unbilled project costs are included in Accrued expenses and other current liabilities on the Consolidated Balance Sheets. 

Inventories 

Our inventories consisted of the following (in thousands):  

Raw materials ..................................................................................................................   $
Work in process ...............................................................................................................     
Finished goods.................................................................................................................     
Inventories, net ............................................................................................................   $

1,783     $
1,146       
1,621       
4,550     $

2,590  
1,689  
2,224  
6,503  

Valuation adjustments for excess and obsolete inventory, reflected as a reduction of inventory at December 31, 2016 and 

2015, were $1.4 million and $1.7 million, respectively. 

December 31, 

2016 

2015 

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Prepaid and Other Current Assets 

Prepaid expenses and other current assets consisted of the following (in thousands): 

Interest receivable ...........................................................................................................   $
Foreign currency put options ...........................................................................................     
Supplier advances ............................................................................................................     
Other prepaid expenses and current assets ......................................................................     
Total prepaid and other current assets .........................................................................   $

272     $
—       
73       
966       
1,311     $

4  
33  
171  
735  
943  

December 31, 

2016 

2015 

Property and Equipment 

Property and equipment held for use consisted of the following (in thousands):  

December 31, 

2016 

2015 

Machinery and equipment ...............................................................................................   $
Leasehold improvements .................................................................................................     
Software ..........................................................................................................................     
Office equipment, furniture, and fixtures ........................................................................     
Automobiles ....................................................................................................................     
Construction in progress ..................................................................................................     
Total property and equipment .........................................................................................     
Less: accumulated depreciation and amortization ...........................................................     
Property and equipment, net ........................................................................................   $

14,781     $
10,326       
2,382       
1,910       
114       
515       
30,028       
(21,385 )     
8,643     $

14,448  
10,196  
2,344  
1,848  
76  
48  
28,960  
(18,338) 
10,622  

Depreciation  and  amortization  expense  related  to  all  property  and  equipment  was  approximately  $3.0  million,  $3.2 

million, and $3.2 million for the years ended December 31, 2016, 2015, and 2014, respectively. 

Unamortized  computer  software  cost  was  $0.6  million  and  $1.0  million  at  year  end  December  31,  2016  and  2015, 
respectively. Depreciation expense related to computer software was $0.4 million, $0.4 million, and $0.4 million for the years 
ended December 31, 2016, 2015, and 2014, respectively.  

Construction  in  progress  costs  at  December  31,  2016,  primarily  relates  to  software  and  systems  upgrades.  As  of 
December 31, 2016, we expect to spend an additional $0.5 million to complete the project. As the entire project is not ready 
for its intended use, the project was not subject to depreciation or amortization. The project is expected to be completed and 
implemented by the first quarter of 2017. 

Accrued Expenses and Other Current Liabilities 

Accrued expenses and other current liabilities consisted of the following (in thousands): 

Payroll and commissions payable ...................................................................................   $
Other accrued expenses and current liabilities ................................................................     
Unbilled project costs ......................................................................................................     
Accrued legal expenses, current ......................................................................................     
Total accrued expenses and other current liabilities ....................................................   $

5,697     $
2,131       
1,069       
122       
9,019     $

5,086  
2,505  
—  
217  
7,808  

December 31, 

2016 

2015 

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Deferred revenue  

Deferred revenue consisted of the following (in thousands):  

Deferred license and development revenue, current ........................................................   $
Deferred product revenue, current ...................................................................................     
Total current deferred revenue .....................................................................................   $

Deferred license and development revenue, non-current ................................................   $
Deferred product revenue, non-current ...........................................................................     
Total non-current deferred revenue .............................................................................   $
Total deferred revenue .....................................................................................................   $

Non-Current Liabilities 

Non-current liabilities consisted of the following (in thousands):  

December 31, 

2016 

2015 

5,000     $
1,201       
6,201     $

63,958     $
—       
63,958     $
70,159     $

5,000  
878  
5,878  

68,958  
42  
69,000  
74,878  

December 31, 

2016 

2015 

Deferred rent expense, non-current .................................................................................   $

554     $

718  

Accumulated Other Comprehensive Loss 

Changes in accumulated other comprehensive losses by component were as follows (in thousands): 

Foreign 
Currency 
Translation 
Adjustments      

Unrealized 
Gains (Losses) 
on 

Investments      

Total 
Accumulated 
Other 
Comprehensive 
Loss 

Balance, December 31, 2013 ..............................................................   $ 
Gross other comprehensive loss (income) ......................................     
Gross reclassification to realized gain ............................................     
Balance, December 31, 2014 ..............................................................   $ 
Net other comprehensive income ....................................................     
Balance, December 31, 2015 ..............................................................   $ 
Net other comprehensive loss .........................................................     
Balance, December 31, 2016 ..............................................................   $ 

(106)   $ 
39      
—      
(67)   $ 
4      
(63)   $ 
(27)     
(90)   $ 

(1)   $ 
(6)     
1      
(6)   $ 
5      
(1)   $ 
(27)     
(28)   $ 

(107) 
33  
1  
(73) 
9  
(64) 
(54) 
(118) 

Advertising Expense 

Advertising expense is charged to operations during the year in which it is incurred. Total advertising expense amounted 

to $14,000, $8,000, and $107,000 for the years ended December 31, 2016, 2015, and 2014, respectively. 

Note 5 — Investments 

Our short-term and long-term investments are all classified as available-for-sale. There were no sales of available-for-

sale securities during the years ended December 31, 2016 and 2015. 

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Available-for-sale securities as of the dates indicated consisted of the following (in thousands):  

December 31, 2016 
Gross  
Gross  
Unrealized 
Unrealized 
Holding 
Holding 
Losses 
Gains 

     Fair Value   

Amortized 
Cost 

Short-term investments 

Corporate notes and bonds ........................................................   $ 
Total short-term investments .................................................   $ 
Total investments .........................................................................    $ 

39,100    $ 
39,100    $ 
39,100    $ 

6    $ 
6    $ 
6    $ 

(33)   $
(33)   $
(33)   $

39,073  
39,073  
39,073  

December 31, 2015 
Gross  
Gross 
Unrealized 
Unrealized 
Holding 
Holding 
Losses 
Gains 

     Fair Value   

Amortized 
Cost 

Short-term investments 

Corporate notes and bonds ........................................................   $ 
Total short-term investments .................................................   $ 
Total investments .........................................................................    $ 

258    $ 
258    $ 
258    $ 

—    $ 
—    $ 
—    $ 

(1)   $
(1)   $
(1)   $

257  
257  
257  

Gross  unrealized  losses  and  fair  values  of  our  investments  in  an  unrealized  loss  position  as  of  the  dates  indicated, 
aggregated by investment category and length of time that security has been in a continuous loss position, were as follows 
(in thousands): 

   Less than 12 months 
     Gross  

December 31, 2016 
     12 months or greater 
     Gross 

Total 

     Gross  

Fair Value 

Unrealized 
 Losses 

Fair Value 

Unrealized 
Losses 

Fair Value 

Unrealized 
Losses 

Corporate notes and bonds ............   $
Total ..............................................   $

29,667    $ 
29,667    $ 

(33)   $
(33)   $

—    $ 
—    $ 

—    $ 
—    $ 

29,667    $ 
29,667    $ 

(33) 
(33) 

   Less than 12 months 
     Gross  

December 31, 2015 
     12 months or greater 
     Gross  

Total 

     Gross  

Fair Value 

Unrealized 
Losses 

Fair Value 

Unrealized 
Losses 

Fair Value 

Unrealized 
Losses 

Corporate notes and bonds ............   $ 
Total ..............................................   $ 

—    $ 
—    $ 

—    $
—    $

257    $ 
257    $ 

(1)   $ 
(1)   $ 

257    $ 
257    $ 

(1) 
(1) 

The Company monitors investments for other-than-temporary impairment. It was determined that unrealized gains and 
losses at December 31, 2016 and 2015, are temporary in nature, because the changes in market value for these securities 
resulted from fluctuating interest rates, rather than a deterioration of the credit worthiness of the issuers. The Company is 
unlikely to experience gains or losses if these securities are held to maturity. In the event that the Company disposes of these 
securities before maturity, it is expected that the realized gains or losses, if any, will be immaterial.  

Expected maturities can differ from contractual maturities because borrowers may have the right to prepay obligations 
without prepayment penalties. The amortized cost and fair value of available-for-sale securities that had stated maturities as 
of December 31, 2016 are shown below by contractual maturity (in thousands):  

December 31, 2016 

Amortized 
Cost 

     Fair Value 

Due in one year or less ....................................................................................................   $ 
Total investments ............................................................................................................   $ 

39,100     $
39,100     $

39,073  
39,073  

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Note 6 — Goodwill and Intangible Assets 

Goodwill 

Goodwill as of December 31, 2016 was the result of our acquisition of Pump Engineering, LLC in December 2009. Our 
annual impairment test performed as of July 1, 2016 determined that goodwill was not impaired. No impairment of goodwill 
has been recorded in the accompanying Consolidated Financial Statements. 

The net carrying amount of goodwill was $12.8 million for the years ended December 31, 2016 and 2015.  

Other Intangible Assets 

The components of identifiable intangible assets, all of which are finite-lived, as of the date indicated were as follows 

(in thousands): 

   Gross 

Carrying 
Amount 

December 31, 2016 
Net 
Carrying 
Amount 

    Accumulated 
Impairment 
Losses 

Accumulated 
Amortization 

     Weighted 
Average 
Useful Life 

Developed technology ..................   $ 
Non-compete agreements .............     
Backlog ........................................     
Trademarks ...................................     
Customer relationships .................     
Patents ..........................................     
Total .............................................   $ 

6,100     $ 
1,310       
1,300       
1,200       
990       
585       
11,485     $ 

(4,321)   $ 
(1,310)     
(1,300)     
(180)     
(990)     
(422)     
(8,523)   $ 

—    $ 
—      
—      
(1,020)     
—      
(42)     
(1,062)   $ 

1,779      
—      
—      
—      
—      
121      
1,900      

   Gross 

Carrying 
Amount 

December 31, 2015 
Net 
Carrying 
Amount 

    Accumulated 
Impairment 
Losses 

Accumulated 
Amortization 

     Weighted 
Average 
Useful Life 

Developed technology ..................   $ 
Non-compete agreements .............     
Backlog ........................................     
Trademarks ...................................     
Customer relationships .................     
Patents ..........................................     
Total .............................................   $ 

6,100    $ 
1,310      
1,300      
1,200      
990      
585      
11,485    $ 

(3,711)   $ 
(1,310)     
(1,300)     
(180)     
(990)     
(401)     
(7,892)   $ 

—    $ 
—      
—      
(1,020)     
—      
(42)     
(1,062)   $ 

2,389      
—      
—      
—      
—      
142      
2,531      

(1)  SL = Straight-Line and SOYD = Sum-of-Year’s-Digits 
*  Average life of two non-compete agreements. 

Accumulated  impairment  losses  for  trademarks  at  December  31,  2016,  represent  impairment  charges  from  2012. 
Accumulated impairment losses for patents at December 31, 2016 include impairment losses from 2007 and 2010. No other 
impairment of intangible assets was identified during the periods presented. 

Amortization of intangibles was approximately $0.6 million, $0.6 million, and $0.8 million for the years ended December 

31, 2016, 2015, and 2014, respectively. 

Future estimated amortization expense on intangible assets is as follows (in thousands): 

2017 ...............................................................................................................................................................   $ 
2018 ...............................................................................................................................................................     
2019 ...............................................................................................................................................................     
2020 ...............................................................................................................................................................     
2021 ...............................................................................................................................................................     
Thereafter ......................................................................................................................................................     
Total ..............................................................................................................................................................   $ 

   December 31,   
631   
629   
575   
16   
12   
37   
1,900   

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Amortization 
Method (1)    
SL   
SL   
SL   
SL   
SOYD   
SL   

10      
4*     
1      
20      
5      
18      
9      

Amortization 
Method (1)   
SL 
SL 
SL 
SL 
SOYD 
SL 

10      
4*    
1      
20      
5      
18      
9      

  
  
  
    
  
  
  
  
  
    
    
  
  
    
  
  
  
 
  
    
    
  
  
  
 
  
  
  
  
  
Note 7 — Fair Value Measurements 

We follow the authoritative guidance for fair value measurements and disclosures that, among other things, defines fair 
value, establishes a consistent framework for measuring fair value, and expands disclosure for each major asset and liability 
category measured at fair value on either a recurring or nonrecurring basis. Fair value is defined as an exit price that would 
be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair 
value is a market-based measurement that should be determined based on assumptions that market participants would use in 
pricing an asset or liability. 

Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities; 
Level 2 — Inputs other than quoted prices included within Level 1 that are either directly or indirectly observable; and 
Level 3 — Unobservable inputs in which little or no market activity exists, therefore requiring an entity to develop its 
own estimates of assumptions that market participants would use in pricing an asset or liability. 

Fair Value of Financial Instruments 

For our investments in available-for-sale securities, if quoted prices in active markets for identical investments are not 
available to determine fair value (Level 1), then we use quoted prices for similar assets or inputs other than the quoted prices 
that are observable either directly or indirectly (Level 2).  

The investments included in Level 2 consist primarily of municipal, corporate, and agency obligations. The asset also 
included in Level 2 consists of the premium paid for foreign currency put options. The fair value of this asset was determined 
based on the time value of the options as it was determined there was no intrinsic value of the options. 

The fair value of financial assets and liabilities measured on a recurring basis is as follows (in thousands): 

   December 31, 
2016 

Fair Value Measurement at  
Reporting Date Using 
Level 2 
Inputs 

Level 3 
Inputs 

Level 1 
Inputs 

Assets: 

Available-for-sale securities .................................   $ 
Total assets ...........................................................   $ 

39,073    $ 
39,073    $ 

—    $ 
—    $ 

39,073     $ 
39,073     $ 

—  
—  

   December 31, 
2015 

Fair Value Measurement at  
Reporting Date Using 
Level 2 
Inputs 

Level 3 
Inputs 

Level 1 
Inputs 

Assets: 

Available-for-sale securities .................................   $ 
Foreign currency put options ................................     
Total assets ...........................................................   $ 

257    $ 
33      
290    $ 

—    $ 
—      
—    $ 

257     $ 
33       
290     $ 

—  
—  
—  

The reconciliation of the beginning and ending balances for financial assets and liabilities measured on a recurring basis 
using significant unobservable inputs (Level 3) for the years ended December 31, 2016, 2015, and 2014 is as follows (in 
thousands): 

   Contingent 

Consideration 

Balance, December 31, 2013 .........................................................................................................................   $ 
Net gain on settlement ...............................................................................................................................     
Settlement payment ...................................................................................................................................     
Balance, December 31, 2014 .........................................................................................................................   $ 
Loss due to change in fair value ................................................................................................................     
Balance, December 31, 2015 .........................................................................................................................   $ 
Loss due to change in fair value ................................................................................................................     
Balance, December 31, 2016 .........................................................................................................................   $ 

1,524   
(149 ) 
(1,375 ) 
—   
—   
—   
—   
—   

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Note 8 — Long-Term Debt and Lines of Credit  

Debt 

In March 2015, we entered into a loan agreement with a financial institution for a $55,000 fixed-rate installment loan 
with an annual interest rate of 6.35%. The loan is payable in equal monthly installments and matures on April 2, 2020. The 
note is secured by the asset purchased.  

Long-term debt consisted of the following (in thousands) 

December 31, 

2016 

2015 

Loan payable ...................................................................................................................   $ 
Less: current portion ........................................................................................................     
Total long-term debt ....................................................................................................   $ 

38     $ 
(11 )     
27     $ 

48  
(10) 
38  

Future minimum principal payments due under long-term debt arrangements consist of the following (in thousands): 

2017 ...............................................................................................................................................................   $ 
2018 ...............................................................................................................................................................     
2019 ...............................................................................................................................................................     
2020 ...............................................................................................................................................................     
Total ..............................................................................................................................................................   $ 

   December 31,   
11   
11   
12   
4   
38   

Lines of Credit 

In June 2012, we entered into a loan agreement with a financial institution. The loan agreement was amended in June 
2015, (as amended, the “Loan Agreement”). The Loan Agreement provides for a total available credit line of $16.0 million. 
Under the Loan Agreement, we are allowed to draw advances not to exceed the lesser of the $16 million credit line or the 
credit line minus all outstanding revolving loans. Revolving loans may be in the form of a base rate loan that bears interest 
equal to the prime rate or a Eurodollar loan that bears interest equal to the adjusted LIBOR rate plus 1.25%. Stand-by letters 
of  credit  are  subject  to  customary  fees  and  expenses  for  issuance or renewal. The  unused portion  of the  credit facility  is 
subject to a facility fee in an amount equal to 0.25% per annum of the average unused portion of the revolving line. The Loan 
Agreement also requires us to maintain a cash collateral balance equal to 101% of all outstanding advances and all outstanding 
stand-by letters of credit collateralized by the line of credit. The Loan Agreement matures in June 2018 and is collateralized 
by substantially all of our assets. This Loan Agreement was terminated on January 24 2017. With the termination of the Loan 
Agreement,  the  cash  collateral  requirement  was  increased  to  105%  on  all  outstanding  stand-by  letters  of  credit  and  all 
outstanding corporate credit cards 

As of December 31, 2016 and 2015, there were no advances drawn under the Loan Agreement. Stand-by letters of credit 
collateralized  under  the  Loan  Agreement  totaled  $3.1  million  and  $3.8  million  as  of  December  31,  2016  and  2015, 
respectively.  Total  cash  restricted  related  to  these  stand-by  letters  of  credit  totaled  $3.1  million  and  $3.8  million  as  of 
December 31, 2016 and 2015, respectively. 

We are subject to certain financial and administrative covenants under the Loan Agreement. As of December 31, 2016, 

we were in compliance with these covenants. 

At  December  31,  2016,  we  also  had  stand-by  letters  of  credit  collateralized  by  restricted  cash  at  two  other  financial 
institutions totaling $1.3 million. Total cash restricted related to these stand-by letters of credit totaled $1.3 million as of 
December 31, 2016 

Restricted  cash  related  to  all  stand-by  letters  of  credit  at  December  31,  2016  and  2015  totaled  $4.4  million  and  $3.8 

million, respectively. 

On  January  27,  2017,  we  entered  into  a  loan  and  pledge  agreement  (the  “Loan  and  Pledge  Agreement”)  with  another 
financial institution. The Loan and Pledge Agreement provides for a committed revolving credit line of $16.0 million and an 
uncommitted revolving credit line of $4.0 million. Under the Loan and Pledge Agreement we are allowed to borrow and 

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request letters of credit against the eligible assets held from time to time in the pledged account maintained with the financial 
institution. Stand-by letters of credit are secured by pledged U.S. investments and there is no cash collateral balance required. 
Stand-by letters of credit are subject to fees, in an amount equal to 0.7% per annum of the face amount of the letter of credit, 
that are payable quarterly and are non-refundable. Revolving loans incur interest per annum on the base rate equal to the 
LIBOR  rate plus  the  Margin defined  as 1.5%.  Any  default  bears  the  aforementioned  interest  plus  an additional  2%.  The 
unused portion of the credit line is subject to a fee equal to the product of 0.20% per annum multiplied by the difference, if 
positive, between $16.0 million and the average daily balance of all advances under the committed facility plus aggregate 
average daily undrawn amounts of all letters of credit issued under the committed facility during the immediately preceding 
month or portion thereof. 

See Note 9 — “Commitments and Contingencies,”  for further discussion of restricted cash associated with stand-by 

letters of credit. 

Note 9 — Commitments and Contingencies 

Operating Lease Obligations 

We lease facilities under fixed non-cancellable operating leases that expire on various dates through July 2021. Future 

minimum lease payments consist of the following (in thousands): 

2017 ...............................................................................................................................................................   $ 
2018 ...............................................................................................................................................................     
2019 ...............................................................................................................................................................     
2020 ...............................................................................................................................................................     
2021 ...............................................................................................................................................................     
Total ..............................................................................................................................................................   $ 

   December 31,   
1,705   
1,662   
1,460   
59   
34   
4,920   

Total rent and lease expense was $1.4 million, $1.5 million, and $1.7 million for the years ended December 31, 2016, 

2015, and 2014, respectively. 

Warranty 

Changes in our accrued warranty reserve incurred under our warranties were as follows (in thousands): 

Years Ended December 31, 
2015 

2014 

2016 

Balance, beginning of period ..............................................................   $ 
Warranty costs charged to cost of revenue .........................................     
Utilization charges against reserve .....................................................     
Release of accrual related to expired warranties ................................     
Balance, end of period ........................................................................   $ 

461    $
208      
(27)      
(236)     
406    $

755    $
135      
(34)     
(395)     
461    $

709  
156  
(110) 
—  
755  

During the year ended December 31, 2015, we adjusted previously established warranty reserves. The adjustment related 

to expired warranties which increased gross profit and reduced net loss by $0.4 million. 

Purchase Obligations 

We have purchase order arrangements with our vendors for which we have not received the related goods or services as 
of December 31, 2016. These arrangements are subject to change based on our sales demand forecasts, and we have the right 
to cancel the arrangements prior to the date of delivery. The majority of these purchase order arrangements were related to 
various  raw  materials  and  components  parts.  As  of  December  31,  2016,  we  had  approximately  $6.8  million  of  open 
cancellable purchase order arrangements related primarily to materials and parts.  

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Guarantees 

We enter into indemnification provisions under our agreements with other companies in the ordinary course of business, 
typically with customers. Under these provisions, we generally indemnify and hold harmless the indemnified party for losses 
suffered or incurred by the indemnified party as a result of our activities, generally limited to personal injury and property 
damage caused by our employees at a customer’s desalination plant in proportion to the employee’s percentage of fault for 
the accident. Damages incurred for these indemnifications would be covered by our general liability insurance to the extent 
provided by the policy limitations. We have not incurred material costs to defend lawsuits or settle claims related to these 
indemnification agreements. As a result, the estimated fair value of these agreements is not material. Accordingly, we had no 
liabilities recorded for these agreements as of December 31, 2016 and 2015. 

In certain cases, we issue warranty and product performance guarantees to our customers for amounts generally equal to 
10%  or  less  of  the  total  sales  agreement  to  endorse  the  execution  of  product  delivery  and  the  warranty  of  design  work, 
fabrication, and operating performance of our devices. These guarantees are generally stand-by letters of credit that typically 
remain in place for periods ranging up to twenty-four (24) months, and in some cases, up to sixty-eight (68) months. All 
stand-by letters of credit, collateralized by restricted cash at December 31, 2016 and 2015, totaled $4.4 million and $3.8 
million, respectively. 

Litigation 

The  Company  is  named  in  and  subject  to  various  proceedings  and  claims  in  connection  with  our  business.  We  are 
contesting the allegations in these claims, and we believe that there are meritorious defenses in each of these matters. The 
outcome of matters we have been and currently are involved in cannot be determined at this time, and the results cannot be 
predicted with certainty. There can be no assurance that these matters will not have a material adverse effect on our results 
of operations in any future period and a significant judgment could have a material adverse impact on our financial condition, 
results of operations and cash flows. We may in the future become involved in additional litigation in the ordinary course of 
our business, including litigation that could be material to our business. Based on currently available information and review 
with outside counsel, management does not believe that the currently known actions or threats against the Company will 
result in any material adverse effect on our financial condition, results of operations, or cash flows. 

On September 10, 2014, the Company terminated the employment of its Senior Vice President, Sales, Borja Blanco, on 
the basis of breach of duty of trust and conduct leading to conflict of interest. On October 24, 2014, Mr. Blanco filed a labor 
claim against ERI Iberia in Madrid, Spain, challenging the fairness of his dismissal and seeking compensation (“Case 1”). A 
hearing was held on November 13, 2015, after which the labor court ruled that it did not have jurisdiction over the matter. 
Mr.  Blanco  has  appealed.  Based  on  currently  available  information  and  review  with  outside  counsel,  the  Company  has 
determined that an award to Mr. Blanco is not probable. While a loss may be reasonably possible, an estimate of loss, if any, 
cannot reasonably be determined at this time.  

On November 24, 2014, Mr. Blanco filed a second action based on breach of contract theories in the same court as Case 
1, but  the  cases  are  separate.  In  Case  2,  Mr.  Blanco  seeks  payment  of an unpaid bonus,  stock options,  and non-compete 
compensation. The court ruled that this case is stayed until a final ruling is issued in Case 1. Based on currently available 
information and review with outside counsel, the Company has determined that an award to Mr. Blanco is not probable. 
While a loss may be reasonably possible, an estimate of loss, if any, cannot reasonably be determined at this time.  

On January 20 and 27, 2015, two stockholder class action complaints were filed against the Company in the United 
States District Court of the Northern District of California, on behalf of Energy Recovery stockholders under the captions, 
Joseph Sabatino v. Energy Recovery, Inc. et al., Case No. 3:15-cv-00265 EMC, and Thomas C. Mowdy v. Energy Recovery, 
Inc,  et  al.,  Case  No.  3:15-cv-00374  EMC.  The  complaints  have  now  been  consolidated  under  the  caption,  In  Re  Energy 
Recovery Inc. Securities Litigation, Case No. 3:15-cv-00265 EMC. The consolidated complaint alleges violations of Section 
10(b), Rule 10b-5, and Section 20(a) of the Securities Exchange Act of 1934 based upon alleged public misrepresentations 
and seeks the recovery of unspecified monetary damages. On October 12, 2016, the Company and the attorneys representing 
the class reached an agreement in principle to settle all outstanding claims in the case. As part of the settlement agreement, 
the Company has agreed to pay the class an undisclosed sum, the entirety of which will be borne by the Company’s insurer. 
The settlement agreement is subject to approval by the United States District Court of the Northern District of California. 

On February 18, 2016, a complaint captioned Goldberg v. Rooney, et al., HG 16804359, was filed in the Superior Court 
for the State of California, County of Alameda, naming as defendants Thomas Rooney, Alexander J. Buehler, Joel Gay, Ole 
Peter Lorentzen, Audrey Bold, Arve Hanstveit, Fred Olav Johannessen, Robert Yu Lang Mao, Hans Peter Michelet, Maria  

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Elisabeth Pate-Cornell, Paul Cook, Olav Fjell, and Dominique Trempont (“Individual Defendants”) and naming the Company 
as a nominal defendant. The complaint is styled as a derivative action being brought on behalf of the Company and generally 
alleges breach of fiduciary duty, abuse of control, gross mismanagement, and unjust enrichment causes of action against the 
Individual Defendants. Based on currently available information and review with outside counsel, the Company is not able 
to estimate a potential loss, if any, due to the early stage of the matter. 

On July 27, 2016, a complaint captioned Gerald McManiman v. Gay, et al., RG 16824960, was filed in the Superior 
Court for the State of California, County of Alameda, naming as defendants Joel Gay, Chris Gannon, Hans Peter Michelet, 
Alexander Buehler, Arve Hanstveit, Dominique Trempont, Robert Yu Lang Mao, Thomas S. Rooney, Jr., Borja Sanchez-
Blanco, Audrey Bold, Paul M. Cook, Marie-Elisabeth Pate -Cornell, Fred Olav Johannessen (“Individual Defendants”) and 
naming the Company as a nominal defendant. The complaint is styled as a derivative action being brought on behalf of the 
Company and generally alleges breach of fiduciary duties and violations of laws against the Individual Defendants. Based on 
currently available information and review with outside counsel, the Company is not able to estimate a potential loss, if any, 
due to the early stage of the matter. 

Note 10 — Income Taxes 

The following table presents the U.S. and foreign components of consolidated (loss) income before income taxes and the 

(benefit) provision for income taxes (in thousands): 

Years Ended December 31, 
2015 

2016 

2014 

Income (loss) before income taxes: 
U.S. .....................................................................................................   $
Foreign ...............................................................................................     
Total income (loss) before income taxes ............................................   $

6,158    $ 
(5,514)     
644    $ 

(7,566)   $
(4,406)     
(11,972)   $

(18,393 ) 
(21 ) 
(18,414 ) 

Current tax provision (benefit): 
Federal ................................................................................................   $
State ....................................................................................................     
Foreign ...............................................................................................     
Total current tax provision (benefit) ...................................................   $

Deferred tax (benefit) provision: 
Federal ................................................................................................   $
State ....................................................................................................     
Foreign ...............................................................................................     
Total deferred tax (benefit) provision .................................................   $
Total (benefit) provision for income taxes .........................................   $

—    $ 
16      
46      
62    $ 

248    $ 
3      
(703)     
(452)   $ 
(390)   $ 

—    $
(3)     
20      
17    $

225    $
(17)     
(559)     
(351)   $
(334)   $

—   
2   
15   
17   

241   
33   
—   
274   
291   

A reconciliation of income taxes computed at the statutory federal income tax rate to the effective tax rate implied by the 

accompanying Statements of Operations is as follows: 

U.S. federal taxes at statutory rate .....................................................     
Non-benefited losses stemming from valuation allowance on 

current year .....................................................................................     
Federal research credits .....................................................................     
Stock-based compensation ................................................................     
State income tax, net of federal benefit .............................................     
Other ..................................................................................................     
Foreign rate differential .....................................................................     
Effective tax rate ...............................................................................     

Years Ended December 31, 
2015 

2014 

2016 

34%     

34%     

(405%)     
(64%)     
(1%)     
3%     
13%     
359%     
(61%)     

(9%)     
2%     
(8%)     
—  
1%     
(17%)     
3%     

34% 

(35%) 
2% 
(3%) 
—  
—  
—  
(2%) 

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Total deferred tax assets and liabilities consist of the following (in thousands): 

   Years Ended December 31, 

2016 

2015 

Deferred tax assets: 
Net operating loss carry forwards ....................................................................................   $
Accruals and reserves ......................................................................................................     
Research and development credit carry forwards ............................................................     
Acquired intangibles .......................................................................................................     
Charitable contributions ..................................................................................................     
Total deferred tax assets ..................................................................................................   $
Valuation allowance ........................................................................................................     
Net deferred tax assets .................................................................................................   $

Deferred tax liabilities: 
Depreciation on property and equipment ........................................................................   $
Unrecognized gain on translation of foreign currency ....................................................     
Goodwill ..........................................................................................................................     
Total deferred tax liabilities .........................................................................................   $

14,082     $
4,896       
2,609       
1,415       
5       
23,007     $
(21,067 )     
1,940     $

(630 )   $
(40 )     
(2,233 )     
(2,903 )   $

14,972  
4,842  
1,916  
1,459  
6  
23,195  
(21,443) 
1,752  

(1,152) 
(41) 
(1,981) 
(3,174) 

Net deferred tax liabilities ...............................................................................................   $

(963 )   $

(1,422) 

As reported on the balance sheet: 

Current assets ...............................................................................................................   $
Non-current assets .......................................................................................................     
Non-current liabilities ..................................................................................................     
Net deferred tax liabilities ............................................................................................   $

—     $
1,270       
(2,233 )     
(963 )   $

938  
—  
(2,360) 
(1,422) 

We had gross deferred tax assets of approximately $23.0 million and $23.2 million at December 31, 2016 and 2015, 
respectively, relating principally to accrued expenses and tax effects of net operating loss and tax credit carry-forwards. In 
assessing  the  recoverability  of  deferred  tax  assets,  we  consider  whether  it  is  more  likely  than  not  that  the  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 deductible. 

We assess the available positive and negative evidence to estimate if sufficient future taxable income will be generated 
to  use  the  existing  deferred  tax  assets.  In  making  such  a  determination,  we  consider  all  available  positive  and  negative 
evidence, including recent results of operations, scheduled reversals of deferred tax liabilities, projected future income, and 
available tax planning strategies. A significant piece of the negative evidence evaluated was the cumulative loss incurred over 
the  three-year  period  ended  December  31,  2016.  Such  objective  evidence  limits  the  ability  to  consider  other  subjective 
evidence, such as our projection for future growth. 

On the basis of this evaluation, as of December 31, 2016, a valuation allowance of approximately $21.1 million has been 
recorded to reduce our deferred income tax assets to the amount that is more likely than not to be realized; a decrease of $0.4 
million from December 31, 2015. The valuation allowance represents a provision for uncertainty as to the realization of tax 
benefits from these deferred income tax assets. We will continue to evaluate the tax benefit uncertainty and will adjust, if 
warranted, the valuation allowance in future periods to the extent that our deferred income tax assets become more likely 
than not to be realizable. 

At December 31, 2016 and 2015, we had net operating loss carry-forwards of approximately $41.8 million and $41.0 
million, respectively, for federal and $14.0 million and $14.9 million, respectively, for California. As of December 31, 2016, 
the  federal  and  California  net  operating  loss  carryovers  include  $6.5  million  and  $0.7  million  of  excess  stock  based 
compensation deductions that will result in an increase in Additional Paid in Capital when recognized. The net operating loss 
carry-forwards, if not utilized, will begin to expire in 2018 for federal and 2029 for California purposes. Utilization of the net 
operating loss carry-forwards is subject to a substantial annual limitation due to the ownership change limitations provided 
by  the  Internal  Revenue  Code  and  similar  state  provisions.  The  annual  limitation  will  result  in  the  expiration  of  the  net 
operating loss carry-forwards before utilization. We estimated the amount which may ultimately be realized and recorded 
deferred tax assets accordingly. In addition, at December 31, 2016 and 2015, we had net operating loss carry-forwards of 

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approximately $10.0 million and $4.4 million, respectively, for Ireland tax purposes. Ireland net operating losses carryover 
indefinitely. 

At  December  31,  2016  and  2015,  we  had  credit  carry-forwards  of  approximately  $1.6  million  and  $1.2  million, 
respectively,  for  federal  and  approximately  $1.5  million  and  $1.1  million,  respectively,  for  California.  The  credit  carry-
forwards, if not utilized, will begin to expire in 2030 for federal purposes. The California credit carry-forwards do not expire. 
Utilization  of  the  credit  carry-forwards  may  be  subject  to  a  substantial  annual  limitation  due  to  the  ownership  change 
limitations provided by the Internal Revenue Code and similar state provisions. 

Measurement of uncertain tax positions is based on judgment regarding the largest amount that is greater than 50% likely 
of being realized upon the ultimate settlement with a taxing authority. As of December 31, 2016 and 2015, we had $603,000 
and $394,000, respectively, of unrecognized tax benefits, none of which, if recognized, would affect our effective tax rate. 
The aggregate changes in the balance of the gross unrecognized tax benefit were as follows (in thousands): 

Gross unrecognized tax benefits as of December 31, ......................................................   $
Gross increases related to current year tax position ........................................................     
Settlement ........................................................................................................................     
Gross unrecognized tax benefits as of December 31, ......................................................   $

394     $
209       
—       
603     $

292  
115  
(13) 
394  

2016 

2015 

We recognize interest and/or penalties related to uncertain tax positions in income tax expense. There were no accrued 

interest or penalties associated with any unrecognized tax benefits as of December 31, 2016 and 2015. 

We are subject to taxation in the U.S. and various states and foreign jurisdictions. There are no ongoing examinations by 
taxing  authorities  at  this  time.  We  believe  that,  as  of  December  31,  2016,  the  gross  unrecognized  tax  benefits  will  not 
materially change in the next twelve (12) months, that we have adequately provided for any reasonably foreseeable outcome 
related to any tax audit, and that any settlement will not have a material adverse effect on the consolidated financial position 
or results of operation; however, there can be no assurances as to the possible outcomes. 

Note 11 — Stockholders’ Equity 

Preferred Stock 

We have the authority to issue 10,000,000 shares of $0.001 par value preferred stock. Our Board of Directors has the 
authority, without action by our stockholders, to designate and issue shares of preferred stock in one or more series. The 
Board of Directors is also authorized to designate the rights, preferences, and voting powers of each series of preferred stock, 
any or all of which may be greater than the rights of the common stock including restrictions of dividends on the common 
stock, dilution of the voting power of the common stock, reduction of the liquidation rights of the common stock, and delaying 
or preventing a change in control of the Company without further action by our stockholders. To date, the Board of Directors 
has not designated any rights, preferences, or powers of any preferred stock, and as of December 31, 2016 and 2015, no 
shares of preferred stock were issued or outstanding. 

Common Stock 

We have the authority to issue 200,000,000 shares of $0.001 par value common stock. Subject to the preferred rights of 
the holders of shares of any class or series of preferred stock as provided by our Board of Directors with respect to any such 
class or series of preferred stock, the holders of the common stock shall be entitled to receive dividends, as and when declared 
by the Board of Directors. In the event of any liquidation, dissolution, or winding up of the Company, whether voluntary or 
involuntary, after the distribution or payment to the holders of shares of any class or series of preferred stock as provided by 
the  Board  of  Directors  with  respect  to  any  such  class  or  series  of  preferred  stock,  the  remaining  assets  of  the  Company 
available  for  distribution  to  stockholders  shall  be  distributed  among  and  paid  to  the  holders  of  common  stock  ratably  in 
proportion to the number of shares of common stock held by them. 

At December 31, 2016, 56,884,207 shares were issued and 53,162,551 shares were outstanding. At December 31, 2015, 

54,948,235 shares were issued and 52,468,779 shares were outstanding.  

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Stock Repurchase Program 

In  January  2016,  our  Board  of  Directors  authorized  a  stock  repurchase  program  under  which  the  Company,  at  the 
discretion of management, could repurchase up to $6.0 million in aggregate cost of our outstanding common stock through 
June 30, 2016 (the “January Authorization”). In May 2016, our Board of Directors rescinded the January Authorization and 
authorized a new stock repurchase program under which the Company, at the discretion of management, could repurchase 
up to $10.0 million in aggregate cost of our outstanding common stock through October 31, 2016 (the “May Authorization”). 
As of December 31, 2016, 673,700 shares, at an aggregate cost of $4.1 million, had been repurchased under the January 
Authorization and 568,500 shares, at an aggregate cost of $5.3 million, had been repurchased under the May Authorization. 
We  account  for  stock  repurchases  using  the  cost  method.  Cost  includes  fees  charged  in  connection  with  acquiring  the 
outstanding common stock. The May Authorization expired in October 2016 and there was no repurchase authorization in 
place at December 31, 2016. 

A  stock  repurchase  program  was  not  in  place  during  the  year  ended  December  31,  2015,  therefore  no  shares  were 

repurchased during 2015. 

In February 2014, our Board of Directors authorized a stock repurchase program under which up to three million shares, 
not to exceed $6.0 million in aggregate cost, of our outstanding common stock could be repurchased through December 31, 
2014 at the discretion of management. During the year ended December 31, 2014, 696,853 shares at an aggregate cost of $2.8 
million were repurchased under this authorization. This 2014 repurchase authorization expired on December 31, 2014. 

Warrants 

There  were  no  warrants  outstanding  as  of  December  31,  2016.  All  outstanding  warrants  had  been  exercised  as  of 

December 31, 2015.  

During the year ended December 31, 2015, warrants to purchase 200,000 shares of common stock were exercised for 

cash at a price of $1.00 per share. The proceeds received for this exercise totaled $200,000. 

During  the  year  ended  December  31,  2014,  warrants  to  purchase  450,000  shares  of  common  stock  were  exercised. 
Warrants to purchase 50,000 shares of common stock were exercised for cash at a price of $1.00 per share. The proceeds 
received from this exercise totaled $50,000. Warrant to purchase 400,000 shares of common stock were exercised for 311,111 
shares of common stock in lieu of cash proceeds. The remaining 88,889 warrants were cancelled and considered payment for 
the exercise. 

A summary of our warrant activity is as follows (in thousands, except exercise prices and contractual life data): 

Outstanding, beginning of period .......................................................     
Exercised during the period ................................................................     
Cancelled during the period ...............................................................     
Outstanding, end of period .................................................................     
Weighted average exercise price of warrants outstanding at end of 

period ...............................................................................................   $ 

Weighted average remaining contractual life, in years, of warrants 

outstanding at end of period .............................................................     

Note 12 — Stock-Based Compensation 

Stock Option Plan 

Years Ended 
December 31, 
2015 

2016 

2014 

—      
—      
—      
—      

0    $ 

0      

200      
(200)     
—      
—      

0    $

0      

650   
(361 ) 
(89 ) 
200   

1.00   

0.5   

In June 2016, our stockholders approved the 2016 Incentive Plan (the “Plan”), that permits the grant of stock options, 
stock appreciation rights (“SARs”), restricted stock (“RS, RSAs, or RSUs”), performance units, performance shares, and 
other stock-based awards to employees, officers, directors, and consultants. Prior to the approval of the Plan, we maintained 
the Amended and Restated 2008 Equity Incentive Plan (the “Prior Plan”). Stock-based awards granted under the Plan and the 
Prior Plan, generally vest over four years and expire no more than ten years after the date of grant. Subject to adjustments, as 

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provided in the Plan, the number of shares of common stock initially authorized for issuance under the Plan was 4,441,083 
(which consist of 3,830,000 new awards plus 611,083 awards that were authorized and unissued under the Prior Plan) plus 
up to 7,635,410 awards that were set aside for awards granted under the Prior Plan that are subsequently forfeited. The Plan 
supersedes all previously issued stock incentive plans (including the Prior Plan) and is currently the only available plan from 
which awards may be granted.  

Shares available for grant under the Plan were 4,532,141 and 1,536,009 at December 31, 2016 and 2015, respectively. 

Stock Option Activity 

The following table summarizes the stock option activity under the Plan, inclusive of options granted under all previous 

plans: 

Options Outstanding 
   Weighted 
Average 
Remaining 
Contractual 
Life  
(in Years) 

Weighted 
Average 
Exercise 
Price 

   Shares 

Balance December 31, 2013 .........................................................       7,110,622    $ 
Granted .....................................................................................       1,922,000    $ 
Exercised ..................................................................................      
(872,997)   $ 
Forfeited ....................................................................................      (1,883,596)   $ 
Balance December 31, 2014 .........................................................       6,276,029    $ 
Granted .....................................................................................       2,611,910    $ 
Exercised ..................................................................................      
(349,814)   $ 
Forfeited ....................................................................................      (1,339,646)   $ 
Balance December 31, 2015 .........................................................       7,198,479    $ 
Granted .....................................................................................      
903,676    $ 
Exercised ..................................................................................      (1,935,972)   $ 
(283,322)   $ 
Forfeited ....................................................................................      
     5,882,861    $ 

Balance December 31, 2016 

4.28      
5.22      
2.70      
5.21      
4.51      
3.01      
3.22      
3.18      
3.97      
8.63      
3.41      
5.30      
4.81      

-      
-      
-      

Aggregate 
Intrinsic 
Value (2)    
6.7    $13,017,000  
-  
-  
-  
7.0    $ 8,065,000  
-  
-  
-  
7.0    $22,875,000  
-  
-  
-  
6.3    $32,683,000  

-      
-      
-      

-      
-      
-      

Vested and exercisable as of December 31, 2016 ........................       3,699,668    $ 

4.36      

4.9    $22,150,000  

Vested and exercisable as of December 31, 2016 and 

expected to vest thereafter(1) .................................................       5,572,475    $ 

4.76      

6.1    $31,197,000  

(1)  Options that are expected to vest are net of estimated future option forfeitures in accordance with the provisions of ASC 

718, “Compensation — Stock Compensation.” 

(2)  The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying options and the 
fair value of our common stock as of the end of the period. The fair value of our common stock was $10.35, $7.07, and 
$5.27 per share as of December 31, 2016, 2015, and 2014, respectively 

Years Ended December 31, 
2015 

2016 

2014 

Weighted average fair value of options granted to employees  

(per share) .......................................................................................   $
Aggregate intrinsic value of options exercised (in thousands) ...........   $
Fair value of options vested (in thousands) ........................................   $

5.25    $ 
14,665    $ 
2,977    $ 

1.50    $
942    $
4,657    $

2.41   
1,842   
2,027   

As of December 31, 2016, total unrecognized compensation cost related to non-vested options was $5.8 million, which 

is expected to be recognized as expense over a weighted average period of approximately 2.6 years.  

On January 9, 2017, we granted 7,952 options to new employees. The options vest over a four-year period, have an 

exercise price of $10.33, and expire 10 years from the grant date. 

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On February 2, 2017, we granted 389,224 options to certain officers and other employees. The options vest over a four-

year period, have an exercise price of $10.19 per share, and expire 10 years from the grant date. 

On  February  10,  2017,  we  granted  122,810  options  to  an  officer.  The  options  vest  over  a  four-year  period,  have  an 

exercise price of $9.90 per share, and expire 10 years from the grant date. 

Restricted Stock 

In 2016, we issued 213,514 restricted stock units to key management team members and other employees under the Plan. 
The restricted stock units vest 25% on the first anniversary of the grant date and 1/48th monthly thereafter dependent upon 
continued employment. As the restricted stock units vest, the units will be settled in shares of common stock based on a one-
to-one ratio. The units were valued based on the market price on the date of grant. 

There were no outstanding restricted stock awards as of December 31, 2015.  

In 2014, we granted 27,609 shares of restricted stock to a member of its Board of Directors as compensation for services 

provided in addition to his normal director services. The restricted shares were fully vested in March 2015.  

On February 2, 2017, we granted 136,163 restricted stock units to key management team members. The restricted stock 

units vest over a four-year period. Any unvested restricted stock units are forfeited upon the employee’s termination. 

On February 10, 2017, we granted 25,252 restricted stock units to an officer. The restricted stock units vest over a four-

year period. Any unvested restricted stock units are forfeited upon the employee’s termination. 

The following table summarizes the restricted stock activity under the Plan: 

     Weighted 
Average 
Grant-Date 
Fair Value 

Shares 

Balance December 31, 2013 ............................................................................................     
Awarded .......................................................................................................................     
Balance December 31, 2014 ............................................................................................     
Vested ..........................................................................................................................     
Balance December 31, 2015 ............................................................................................     
Awarded .......................................................................................................................     
Balance December 31, 2016 ............................................................................................     

—     $ 
27,609     $ 
27,609     $ 
(27,609 )   $ 
—     $ 
213,514     $ 
213,514     $ 

—  
5.27  
5.27  
5.27  
—  
8.65  
8.65  

As of December 31, 2016, total unrecognized compensation cost related to non-vested restricted stock was $1.6 million, 

which is expected to be recognized as expense over a weighted average period of approximately 3.2 years.  

Stock Based Compensation 

We applied ASC 718, “Compensation — Stock Compensation,” during the years ended December 31, 2016, 2015, and 
2014 and recognized related compensation expense of $3.3 million, $4.1 million, and $2.1 million, respectively, related to 
stock options and restricted stock units. 

The fair value of restricted stock units granted to employees is based on our common stock price on the date of grant. 
The fair value of stock options granted to employees is based on the Black-Scholes option pricing model. To determine the 
inputs  for  the  Black-Scholes  option  pricing  model,  we  are  required  to  develop  several  assumptions,  which  are  highly 
subjective. We determine these assumptions as follows: 

Expected Term: We used only our own historical data to determine the expected term of options based on historical 
exercise data. As there was no historical exercise data for non-employee directors, the Company determined the expected 
term based on the simplified method. 

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Expected Volatility: We determined expected volatility based on our own historical data and the corresponding expected 

term that was determined using the Company’s historical exercise data. 

Risk-Free Interest Rate: The risk-free rate is based on U.S. Treasury issues with remaining terms similar to the expected 

term on the options. 

Dividend  Yield:  We  have  never  declared  or  paid  any  cash  dividends  and  do  not  plan  to  pay  cash  dividends  in  the 

foreseeable future; therefore, we use an expected dividend yield of zero in the valuation model. 

Forfeitures: We estimate forfeitures at the time of grant and revise those estimates periodically in subsequent periods if 
actual forfeitures differ from those estimates. We use historical data to estimate pre-vesting option forfeitures and record 
stock-based  compensation  expense  only  for  those  awards  that  are  expected  to  vest.  All  stock-based  payment  awards  are 
amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods. If 
our actual forfeiture rate is materially different from its estimate, the stock-based compensation expense could be significantly 
different from what we have recorded in the current period. 

Stock-Based Compensation — Employee Stock Options and Restricted Stock Awards 

The  estimated  grant  date  fair  values  of  stock  options  granted  to  employees  were  calculated  using  the  Black-Scholes 

option pricing model based on the following assumptions: 

Weighted average expected life (years) ...................................   
Weighted average expected volatility......................................   
Risk-free interest rate ..............................................................   
Weighted average dividend yield ............................................   

Years Ended December 31, 

2016 
   4.38 
  80.35%
1.03% - 1.32% 

   0% 

2015 
  4.71 
 61.79% 
1.12% - 2.19% 

  0% 

2014 
 3.87 
 61% 
    0.98% - 1.28%   
0 0% 

Stock-based compensation expense related to the fair value measurement of awards granted to employees was allocated 

as follows (in thousands): 

Cost of revenue ........................................................................  $ 
General and administrative ......................................................    
Sales and marketing ................................................................    
Research and development ......................................................    
Total stock-based compensation expense ............................  $ 

113  $ 
2,057    
524    
569    
3,263  $ 

130  $ 
3,139    
436    
354    
4,059  $ 

101 
1,174 
487 
342 
2,104 

Years Ended December 31, 
2015 

2014 

2016 

Note 13 — Business Segment and Geographic Information 

We manufacture and sell high-efficiency ERDs and pumps as well as related products and services. Our chief operating 

decision-maker (“CODM”) is the chief executive officer (“CEO”).  

Following the appointment of a new CEO in April 2015, new internal reporting was developed for making operating 
decisions and assessing financial performance. Beginning July 1, 2015, a new internal organizational and reporting structure 
was implemented and we began reporting segment information on a basis reflecting this new structure. Prior period amounts 
have been adjusted retrospectively to reflect this new internal reporting structure. 

Our reportable operating segments consist of the Water Segment and the Oil & Gas Segment. These segments are based 
on the industries in which the products are sold, the type of energy recovery device sold, and the related products and services. 
The Water Segment consists of revenue and expenses associated with products sold for use in reverse osmosis desalination. 
The  Oil  &  Gas  Segment  consists  of  revenue  and  expenses  associated  with products  sold or  licensed for use  in hydraulic 
fracturing, gas processing, and chemical processing. Operating income for each segment excludes other income and expenses 
and  certain  expenses  managed  outside  the  operating  segment.  Costs  excluded  from  operating  income  include  various 
corporate expenses such as certain share-based compensation expenses, income taxes, and other separately managed general 
and administrative expenses not related to the identified segments. Assets and liabilities are reviewed at the consolidated level 

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by the CODM and are not accounted for by segment. The CODM allocates resources to and assesses the performance of each 
operating segment using information about its revenue and operating income (loss). 

The following summarizes financial information by segment for the periods presented (in thousands): 

Product revenue ..................................................................................   $
Product cost of revenue ......................................................................     
Product gross profit ............................................................................     

47,545    $ 
16,353      
31,192      

2,170    $
1,496      
674      

49,715   
17,849   
31,866   

License and development revenue ..................................................     

—      

5,000      

5,000   

Year Ended December 31, 2016 

   Water 

     Oil &Gas 

Total 

Operating expenses: 

General and administrative ..........................................................     
Sales and marketing ....................................................................     
Research and development ..........................................................     
Amortization of intangibles .........................................................     
Operating expenses ..................................................................     
Operating income (loss) ..............................................................   $
Less: 
Corporate operating expenses .....................................................     
Consolidated operating income ...................................................     
Non-operating income .................................................................     
Income before income taxes ........................................................     

1,081      
5,076      
1,331      
631      
8,119      
23,073    $ 

1,000      
2,985      
8,705      
—      
12,690      
(7,016)     

     $

2,081   
8,061   
10,036   
631   
20,809   
16,057   

15,700   
357   
287   
644   

Product revenue ..................................................................................   $
Product cost of revenue ......................................................................     
Product gross profit ............................................................................     

43,530    $ 
19,045      
24,485      

141    $
66      
75      

43,671   
19,111   
24,560   

License and development revenue ..................................................     

—      

1,042      

1,042   

Year Ended December 31, 2015 

   Water 

     Oil &Gas 

Total 

Operating expenses: 

General and administrative ..........................................................     
Sales and marketing ....................................................................     
Research and development ..........................................................     
Amortization of intangibles .........................................................     
Operating expenses ..................................................................     
Operating income (loss) ..............................................................   $
Less: 
Corporate operating expenses .....................................................     
Consolidated operating loss ........................................................     
Non-operating expenses ..............................................................     
Loss before income taxes ............................................................     

936      
4,918      
1,126      
635      
7,615      
16,870    $ 

1,797      
4,070      
6,552      
—      
12,419      
(11,302)     

     $

2,733   
8,988   
7,678   
635   
20,034   
5,568   

17,359   
(11,791 ) 
(181 ) 
(11,972 ) 

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Year Ended December 31, 2014 

   Water 

     Oil &Gas 

Total 

Product revenue ..................................................................................   $ 
Product cost of revenue ......................................................................     
Product gross profit ............................................................................     

29,643    $
13,713      
15,930      

783     $
—       
783       

Operating expenses: 

General and administrative ..........................................................     
Sales and marketing ....................................................................     
Research and development ..........................................................     
Amortization of intangibles .........................................................     
Operating expenses ..................................................................     
Operating income (loss) ..............................................................   $ 
Less: 
Corporate operating expenses .....................................................     
Consolidated operating loss ........................................................     
Non-operating income .................................................................     
Loss before income taxes ............................................................     

Depreciation and amortization expense by segment was as follows: 

1,756      
4,169      
1,453      
842      
8,220      
7,710    $

917       
5,383       
8,237       
—       
14,537       
(13,754 )     

      $

30,426  
13,713  
16,713  

2,673  
9,552  
9,690  
842  
22,757  
(6,044) 

12,439  
(18,483) 
69  
(18,414) 

Segment 
Water ..................................................................................................   $
Oil & Gas ...........................................................................................     
Corporate ............................................................................................     
Total depreciation and amortization ...............................................   $

Years Ended December 31 
2015 

2016 

2014 

3,043    $ 
244      
393      
3,680    $ 

3,192    $
203      
443      
3,838    $

3,518   
105   
405   
4,028   

The following geographic information includes product revenue to our domestic and international customers based on 
the customers’ requested delivery locations, except for certain cases in which the customer directed us to deliver its products 
to a location that differs from the known ultimate location of use. In such cases, the ultimate location of use, rather than the 
delivery location, is reflected in the table below (in thousands, except percentages): 

Years Ended December 31, 
2015 

2016 

2014 

Domestic product revenue .................................................................    $
International product revenue ............................................................      
Total product revenue ....................................................................    $

1,203     $
48,512       
49,715     $

2,861     $
40,810       
43,671     $

1,273  
29,153  
30,426  

Product revenue by country: 
Saudi Arabia ......................................................................................      
China .................................................................................................      
Qatar ..................................................................................................      
Egypt .................................................................................................      
India...................................................................................................      
Oman .................................................................................................      
United Arab Emirates ........................................................................      
United States .....................................................................................      
Others(1) .............................................................................................      
Total ...............................................................................................      

14%    
13       
8       
8       
7       
3       
2       
2       
43       
100%    

3%    
8       
13       
6       
3       
12       
10       
7       
38       
100%    

5%
10  
*  
10  
16  
2  
2  
4  
51  
100%

*  Represents less than 1% 
(1)  Includes remaining countries not separately disclosed. No country in this line item accounted for more than 10% of our 

product revenue during any of the years presented. 

All of our long-lived assets were located in the United States at December 31, 2016 and 2015. 

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Note 14 — Concentrations 

Concentration of Credit Risk 

We  have  an  investment  portfolio  of  fixed  -income  marketable  debt  securities,  including  amounts  classified  as  cash 
equivalents,  short-term  investments,  and  long-term  investments.  The  primary  objective  of  our  investment  activities  is  to 
preserve principal and liquidity while at the same time maximizing yields without significantly increasing risk. We invest 
primarily in investment-grade short-term and long-term debt instruments of corporate issuers and the U.S. government and 
its agencies. These investments are subject to counterparty credit risk. To minimize this risk, we invest pursuant to a Board-
approved investment policy. The policy mandates high credit rating requirements and restricts our exposure to any single 
corporate issuer by imposing concentration limits.  

Our  accounts  receivable  are  derived  from  sales  to  customers  located  around  the  world.  We  generally  do  not  require 
collateral  to  support  customer  receivables,  but  frequently  require  export  letters  of  credit  securing  payment.  We  perform 
ongoing evaluations of our customers’ financial condition and periodically review credit risk associated with receivables. An 
allowance for doubtful accounts is determined with respect to receivable amounts that we have determined to be doubtful of 
collection using specific identification of doubtful accounts and an aging of receivables analysis based on invoice due dates. 
Actual collection losses may differ from our estimates, and such differences could be material to the financial position, results 
of operations, and cash flows. Uncollectible receivables are written off against the allowance for doubtful accounts when all 
efforts to collect them have been exhausted, while recoveries are recognized when they are received. 

Customer Concentration  

Customers accounting for 10% or more of our combined accounts receivable and unbilled receivables were as follows: 

December 31, 

2016 

2015 

Customer A .....................................................................................................................     
Customer B ......................................................................................................................     
Customer C ......................................................................................................................     
Customer D .....................................................................................................................     

16%     
13%     
3%     
7%     

0 %
0 %
26 %
18 %

No other customer accounted for more than 10% of our combined accounts receivable and unbilled receivables during 

any of these periods. 

Product revenue from customers representing 10% or more of product revenue varies from period to period. Customers 

representing 10% or more of product revenue for the periods indicated were: 

Customer B ........................................................................................      
Customer C ........................................................................................      

11%    
*%    

14 %    
1 %    

* %
14 %

2016 

December 31, 
2015 

2014 

*     Less than 1% 

No other customer accounted for more than 10% of our product revenue during any of these years. 

One customer accounts for 100% of our license and development revenue for the years ended December 31, 2016 and 

2015. We did not record any license and development revenue for the year ended December 31, 2014. 

Vendor Concentration  

One vendor accounted for 18% of our accounts payable at December 31, 2016. No vendor accounted for more than 10% 

of our accounts payable at December 31, 2015. 

-76- 

  
  
  
  
  
  
  
  
  
  
  
     
  
   
   
  
  
  
  
  
  
     
     
  
  
  
  
   
  
   
 
 
Note 15 — Related Party 

In 2016, the Company entered into a lease agreement with EMS USA, Inc. for the use of office space. The President and 
Chief Executive Officer of EMS USA, Inc. is also a member of the Board of Directors of the Company. The lease was for a 
term  of  ninety  (90)  days  with  continuation  on  a  month-to-month  basis  thereafter,  with  each  month  being  an  “Additional 
Term.” The Company paid EMS USA, Inc. $5,268 related to this agreement during the year ended December 31, 2016. The 
lease was terminated as of July 2016. 

In 2016, the Company extended an employee loan to one of its employees for $21,786. The loan was repayable to the 
Company monthly over six months and was non-interest bearing. During 2016, the loan was fully paid and another employee 
loan was extended to this employee for $21,786. The new loan is repayable to the Company monthly over six months and is 
non-interest bearing. As of December 31, 2016, the new loan balance was $10,894. 

In  2016,  the  Company  rented  equipment  and  personnel  to  perform  product  testing  from  the  VorTeq  Licensee  for 
$266,000. The Company and the VorTeq Licensee signed a fifteen-year license agreement in 2015 which provides the VorTeq 
Licensee with exclusive worldwide rights to the Company’s VorTeq for use in hydraulic fracturing onshore applications. 

Note 16 — VorTeq License Agreement 

On October 14, 2015, the Company and the VorTeq Licensee signed a fifteen-year license agreement which provides 
the  VorTeq  Licensee  with  exclusive  worldwide  rights  to  the  Company’s  VorTeq  for  use  in  hydraulic  fracturing  onshore 
applications (the “VorTeq License Agreement”). 

The  VorTeq  is  made  up  of  cartridges  though  which  hydraulic  fracturing  fluid  passes  and  a  missile  that  houses  the 
cartridges. The VorTeq License Agreement includes up to $125 million in consideration paid in stages: (i) a $75 million non-
refundable  upfront  exclusivity  payment;  and  (ii)  two  (2)  milestone  payments  of  $25  million  each  upon  achievement  of 
successful tests in accord with KPIs specified in the agreement (“Milestone Payment 1 and 2”). After the milestone tests are 
achieved, the VorTeq Licensee will begin paying ongoing recurring royalty fees to the Company for supply and service of 
the cartridges based on the number of VorTeqs in operation which is subject to the greater of a minimum adoption curve or 
the adoption rate of the technology. 

The  Company  applied  the  guidance  for  multi-element  arrangements  in  identifying  deliverables,  determining  units  of 
accounting, allocating total contract consideration to the units of accounting, and recognizing revenue. It was determined that 
the  non-contingent  deliverables  (fifteen-year  license,  exclusivity,  support  services)  did  not  have  stand-alone  value 
individually, but did on a combined basis, and therefore represented a unit of accounting. The license will provide access to 
the technology over the term of the agreement and, along with the support, is the final deliverable in this unit of accounting. 
The $75 million upfront payment was allocated to this unit of accounting and revenue is recognized on a straight-line basis 
over  the  fifteen-year  term  of  the  license,  starting  from  the  day  that  the  license  agreement  was  signed  and  all  services 
commenced. We recognized license and development revenue of $5.0 million and $1.0 million in 2016 and 2015, and we had 
a  deferred  revenue  balance  of  $69.0  million  related  to  the  upfront  exclusivity  license  fee  as  of  December  31,  2016.  The 
cartridge supply and support services are not assessed to have stand-alone value independent of each other and fees for these 
deliverables will be recognized as earned. 

Milestone Payment 1 of $25 million is payable upon a successful five (5) stage yard test at the VorTeq Licensee’s test 
facility. If a successful yard test is not achieved by the target date, the payment will be delayed until the successful yard test 
is achieved. The Milestone Payment 2 of $25 million is payable upon a successful twenty (20) stage hydraulic fracturing at 
one of the VorTeq Licensee’s customer’s live well. If success is not achieved by the target date, the payment will be delayed 
until  the  successful  live  well  test  is  achieved.  The  achievement  of  each  milestone  and  the  receipt  of  each  of  the  related 
payments are subject to a high degree of uncertainty. 

With respect to the Milestone Payments, the Company determined the payments did meet the definition of a substantive 
milestone. The factors considered in the determination that each milestone was substantive included whether the consideration 
earned from the achievement of the milestone is commensurate with the vendor's performance or the enhancement of value; 
the degree of certainty in achieving the milestone; whether the milestone relates solely to past performance; and whether the 
consideration earned from the achievement of the milestone is reasonable relative to all of the deliverables and payment terms 
within the arrangement. For the years ending December 31, 2016 and 2015, no revenue was recognized for the Milestones 
Payments, nor in any other periods presented.  

-77- 

  
  
  
   
  
  
   
  
   
  
Following Milestone Payment 2, the VorTeq Licensee will begin integrating the technology into its fleets. When the 
technology is integrated into the VorTeq Licensee’s fleets, the Company will begin providing cartridges and servicing those 
cartridges which will generate ongoing recurring royalty revenue. The recurring royalty fee per VorTeq in use will be paid 
based on the greater of a minimum adoption curve or the adoption rate of the technology. Further, a provision is made for an 
advance royalty payment to which recurring royalty fees will be applied. 

The exclusive nature of the agreement terminates if the VorTeq Licensee does not meet the specified minimum adoption 
curves. In the event the Company is not able to achieve successful tests results in accord with the KPIs and to receive the 
milestone payments, the license continues on an exclusive nature for the full term. 

With respect to the cartridges and associated service, royalty revenue will be recognized as royalties are earned, that is, 
in the period in which the contingency regarding royalties are resolved and the amount of royalties are fixed and determinable 
based on the cartridges delivered.  

Note 17 — Supplementary Data — Quarterly Financial Data (unaudited) 

The following table presents certain unaudited consolidated quarterly financial information for each of the eight fiscal 
quarters  in  the  period  ended  December  31,  2016.  This  quarterly  information  has  been  prepared  on  the  same  basis  as  the 
audited Consolidated Financial Statements and includes all adjustments, consisting only of normal recurring adjustments, 
necessary for a fair presentation of the information for the periods presented. The results for these quarterly periods are not 
necessarily indicative of the operating results for a full year or any future period. 

QUARTERLY FINANCIAL DATA (unaudited) 

Three Months Ended, 

   December 31, 
2016 

      September 30, 

2016 

June 30, 
2016 

      March 31, 

2016 

Quarterly Results of Operations(1) 
Product revenue ...................................................    $ 
Product cost of revenue .......................................      
Product gross profit ..........................................      

(In thousands, except per share amounts) 

16,667      $ 
5,971        
10,696        

11,024      $ 
3,968        
7,056        

11,973      $ 
4,236        
7,737        

10,051  
3,674  
6,377  

License and development revenue .......................      

1,250        

1,250        

1,250        

1,250  

Operating expenses: 

General and administrative(2) ...........................      
Sales and marketing .........................................      
Research and development ..............................      
Amortization of intangible assets.....................      
Income (loss) from operations .............................    $ 
Net income (loss) ................................................    $ 
Income (loss) per share: 

Basic ................................................................    $ 
Diluted .............................................................    $ 

3,779        
2,599        
2,730        
158        
2,680      $ 
3,123      $ 

0.06      $ 
0.06      $ 

3,971        
2,512        
2,319        
158        
(654)    $ 
(579)    $ 

(0.01)    $ 
(0.01)    $ 

3,992        
1,935        
2,422        
158        
480      $ 
456      $ 

0.01      $ 
0.01      $ 

4,884  
2,070  
2,665  
157  
(2,149) 
(1,966) 

(0.04) 
(0.04) 

-78- 

    
   
   
  
  
  
  
  
  
  
     
  
  
  
  
        
           
           
           
  
  
        
           
           
           
  
  
        
           
           
           
  
        
           
           
           
  
        
           
           
           
  
  
 
 
Three Months Ended, 

   December 31, 
2015 

      September 30, 

2015 

June 30, 
2015 

      March 31, 

2015 

Quarterly Results of Operations(1) 
Product revenue ...................................................     $ 
Product cost of revenue .......................................       
Product gross profit ..........................................       

(In thousands, except per share amounts) 

15,211      $ 
6,796        
8,415        

12,112      $ 
4,948        
7,164        

10,484      $ 
4,836        
5,648        

5,864  
2,531  
3,333  

License and development revenue .......................       

1,042        

—        

—        

—  

Operating expenses: 

General and administrative(3) ...........................       
Sales and marketing .........................................       
Research and development ..............................       
Amortization of intangible assets.....................       
Loss from operations ...........................................     $ 
Net income (loss) ................................................     $ 
Income (loss) per share: 

Basic ................................................................     $ 
Diluted .............................................................     $ 

4,543        
2,704        
2,242        
159        
(191)    $ 
312      $ 

0.01      $ 
0.01      $ 

3,590        
2,195        
1,474        
159        
(254)    $ 
(340)    $ 

(0.01)    $ 
(0.01)    $ 

5,362        
1,994        
1,410        
158        
(3,276)    $ 
(3,327)    $ 

(0.06)    $ 
(0.06)    $ 

6,278  
2,433  
2,533  
159  
(8,070) 
(8,283) 

(0.16) 
(0.16) 

(1)  Quarterly results may not add up to annual results due to rounding. 
(2)  The increase in general and administrative expense in the first quarter of 2016 was substantially related to the termination

of the former General Counsel. 

(3)  The increases in general and administrative expense in the first and second quarters of 2015 were substantially related to
the resignation of our former Chief Executive Officer and the termination of the former Senior Vice-President of Sales. 

Note 18 — Subsequent Events 

See Note 8 — “Long Term Debt and Lines of Credit” for discussion of Loan and Pledge Agreement entered into in 

January 2017.  

See  Note 11 —  “Stockholders’  Equity”  for  discussion of  grants  of options  and  restricted  stock  units  in  January and 

February 2017. 

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

None.  

Item 9A — Controls and Procedures 

Evaluation of Disclosure Controls and Procedures 

Our management has evaluated, with the participation of our Chief Executive Officer and Chief Financial Officer, the 
effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities 
Exchange Act of 1934, or “Exchange Act”) as of the end of the period covered by this Annual Report on Form 10-K. Based 
on  that  evaluation,  our  Chief  Executive  Officer  and  Chief  Financial  Officer  have  concluded  that,  as  of  such  date,  our 
disclosure controls and procedures were effective to ensure 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 
management as appropriate to allow for timely decisions regarding required disclosure. 

Our disclosure controls and procedures are designed to provide reasonable assurance of achieving their objectives, and 
our Chief Executive Officer and Chief Financial Officer have concluded that these controls and procedures are effective at 
the  “reasonable  assurance”  level.  Our  management,  including  the  Chief  Executive  Officer  and  Chief  Financial  Officer, 
believes  that  a  control  system,  no  matter  how  well  designed  and  operated,  cannot  provide  absolute  assurance  that  the 
objectives of the control system are met, and that no evaluation of controls can provide absolute assurance that all control 
issues and instances of fraud, if any, within a company have been detected. 

Management’s Annual Report on Internal Control Over Financial Reporting and Attestation Report of the Registered 
Accounting Firm 

Management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  the  Company’s  financial 
reporting. Management assessed the effectiveness of the Company’s internal control over financial reporting as of December 
31, 2016. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations 
of the Treadway Commission (COSO) in Internal Control — Integrated Framework (2013). Based on the assessment using 
those  criteria,  management  concluded  that,  as  of  December  31,  2016,  our  internal  control  over  financial  reporting  was 
effective. 

The  Company’s  independent  registered  public  accountants,  BDO  USA,  LLP,  audited  the  Consolidated  Financial 
Statements included in this Annual Report on Form 10-K and have issued an audit report on the Company’s internal control 
over financial reporting. The report on the audit of internal control over financial reporting appears below. 

-80- 

  
  
  
  
  
   
  
  
  
  
  
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

The Board of Directors and Stockholders of 
Energy Recovery, Inc. 
San Leandro, California 

We have audited Energy Recovery, Inc.’s internal control over financial reporting as of December 31, 2016, based on 
criteria  established  in  Internal  Control  —  Integrated  Framework  (2013)  issued  by  the  Committee  of  Sponsoring 
Organizations of the Treadway Commission (the COSO criteria). Energy Recovery, Inc.’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, which is included in the accompanying “Item 9A, Management’s Annual Report on Internal Control 
Over Financial Reporting and Attestation Report of the Registered Public Accounting Firm.” Our responsibility is to express 
an opinion on the Company’s internal control over financial reporting based on our audit. 

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). 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. 

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. 

In  our  opinion,  Energy  Recovery,  Inc.  maintained,  in  all  material  respects,  effective  internal  control  over  financial 

reporting as of December 31, 2016, based on the COSO criteria. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States),  the  Consolidated  Balance  Sheets  of  Energy  Recovery,  Inc.  as  of  December  31,  2016  and  2015,  and  the  related 
Consolidated Statements of Operations, Comprehensive Income (Loss), Stockholders’ Equity, and Cash Flows for each of 
the three years in the period ended December 31, 2016, and our report dated March 9, 2017 expressed an unqualified opinion 
thereon. 

/s/ BDO USA, LLP  

San Jose, California 
March 9, 2017 

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Changes in Internal Control Over Financial Reporting 

There were no changes in our internal control over financial reporting that occurred during our most recent fiscal quarter 

that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 

Item 9B — Other Information 

None.  

Item 10 — Directors, Executive Officers and Corporate Governance 

PART III 

The information required by this Item is included in and incorporated by reference from our Definitive Proxy Statement 
(the “Proxy Statement”) which will be filed with the Securities and Exchange Commission prior to April 30, 2017. The Proxy 
Statement is for our Annual Meeting of Stockholders which will be held on June 22, 2017. 

Item 11 — Executive Compensation 

The information required by this Item is included in and incorporated by reference from the Proxy Statement. 

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

The following table sets forth equity compensation plan information as of December 31, 2016. 

Number of  
Securities to be 
Issued Upon  
Exercise of 
Outstanding 
Options, Warrants, 
and Rights 

Weighted- 
Average Exercise 
Price of 
Outstanding  
Options, 
Warrants, and 
Rights 

Number of 
Securities 
Remaining 
Available for 
Future Issuance 
Under Equity 
Compensation 
Plans (Excluding 
Securities Reflected 
in the First 
Column) 

Plan Category 
Equity compensation plans approved by security 

holders (1) ................................................................     

6,096,375    $ 

4.81      

4,532,141  

(1)  Represents shares of the Company’s common stock issuable upon exercise of options outstanding under the following
equity compensation plans: the 2006 Stock Option/Stock Issuance Plan, the 2008 Equity Incentive Plan, the Amended
and Restated 2008 Equity Incentive Plan, and the 2016 Incentive Plan. 

Except  as  otherwise  disclosed,  the  remaining  information  required  by  this  Item  is  included  in  and  incorporated  by 

reference from the Proxy Statement. 

Item 13 — Certain Relationships and Related Transactions and Director Independence 

The information required by this Item is included in and incorporated by reference from the Proxy Statement. 

Item 14 — Principal Accounting Fees and Services 

The information required by this item is included in and incorporated by reference from the Proxy Statement. 

-82- 

  
  
  
    
  
  
   
  
   
  
  
  
    
    
  
  
  
   
  
   
  
   
 
 
PART IV 

Item 15 — Exhibits and Financial Statement Schedules 

(a) The following documents are included as part of this Annual Report on Form 10-K: 

(1) Financial Statements  

Page in 
Form  
10-K 

Report of Independent Registered Public Accounting Firm ...........................................................................................  43 
Consolidated Balance Sheets — December 31, 2016 and 2015 .....................................................................................  44 
Consolidated Statements of Operations — Years ended December 31, 2016, 2015, and 2014 .....................................  45 
Consolidated Statements of Comprehensive Income (Loss) — Years ended December 31, 2016, 2015, and 2014 ......  46 
Consolidated Statements of Stockholders’ Equity — Years ended December 31, 2016, 2015, and 2014 .....................  47 
Consolidated Statements of Cash Flows — Years ended December 31, 2016, 2015, and 2014 ....................................  48 
Notes to the Consolidated Financial Statements ............................................................................................................  49 

(2) Financial Statement Schedule  

SCHEDULE II 
VALUATION AND QUALIFYING ACCOUNTS 

Balance at 
Beginning of 
Period 

Additions 
Charged to 
Costs and 
Expenses 

     Changes in 
Estimates 
Charged to 
Costs and 
Expenses(1) 
(In thousands) 

Deductions(2) 

Balance at 
End of Years 

Description 

Year Ended December 31, 2014 
Allowance for doubtful accounts ......   $ 
Year Ended December 31, 2015 
Allowance for doubtful accounts ......   $ 
Year Ended December 31, 2016 
Allowance for doubtful accounts ......   $ 

241     $ 

299    $ 

(383 )   $ 

155     $ 

112    $ 

(101 )   $ 

166     $ 

76    $ 

(112 )   $ 

(2)   $ 

—    $ 

—    $ 

155  

166  

130  

  (1)    Collections of previously reserved accounts 
  (2)    Uncollectible accounts written off, net of recoveries 

All other schedules have been omitted because the information required to be presented in them is not applicable or is 

shown in the Consolidated Financial Statements or related Notes.  

(3) Exhibit Index  

See Exhibit Index immediately following the Signature page for a list of Exhibits filed or incorporated by reference as a 

part of this Report. 

(b)   Exhibit.  

See Exhibits listed under Item 15(a)(3).  

(c)   Financial Statement Schedules.  

All  financial  statement  schedules  are  omitted  because  they  are  not  applicable,  not  required,  or  because  the  required 
information  is  included  in  the  Consolidated  Financial  Statements,  the  Notes  thereto,  or  in  the  Exhibits  listed  under  Item 
15(a)(2). 

-83- 

  
  
  
  
  
  
  
  
  
  
    
    
    
  
  
  
  
      
        
        
        
        
  
      
        
        
        
        
  
      
        
        
        
        
  
  
  
  
  
   
  
   
  
   
 
 
Item 16 — Form 10-K Summary 

None 

-84- 

  
  
  
 
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly 
caused this Report to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of San Leandro, State 
of California, on the 9th day of March 2017. 

SIGNATURES 

ENERGY RECOVERY, INC. 

By: /s/ JOEL GAY 
Joel Gay 
President and Chief Executive Officer 

Pursuant to the requirements of the Securities and Exchange Act of 1934, this Report has been signed below by the 

following persons on behalf of the Registrant and in the capacities and on the dates indicated. 

Signature 

/s/ JOEL GAY 
Joel Gay 

Title 

   President and Chief Executive Officer 
   (Principal Executive Officer) 

/s/ CHRIS GANNON 
Chris Gannon 

   Chief Financial Officer  
   (Principal Financial Officer) 

Date 

March 9, 2017 

March 9, 2017 

/s/ HANS PETER MICHELET 
Hans Peter Michelet 

/s/ ALEXANDER J. BUEHLER 
Alexander J. Buehler 

/s/ OLAV FJELL 
Olav Fjell 

/s/ SHERIF FODA 
Sherif Foda 

/s/ ARVE HANSTVEIT 
Arve Hanstveit 

/s/ OLE PETER LORENTZEN 
Ole Peter Lorentzen 

/s/ ROBERT YU LANG MAO 
Robert Yu Lang Mao 

/s/ DOMINIQUE TREMPONT 
Dominique Trempont 

   Director and Chairman of the Board 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

March 9, 2017 

   Director 

   Director 

   Director 

   Director 

   Director 

   Director 

   Director 

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Exhibit 
Number  Exhibit Description 

Form 

Incorporated by Reference 
File No. 

Exhibit 

Filed 

Filing Date  Herewith 

3.1 

3.2 

10.1* 

10.2* 

10.3* 

10.4* 

10.5* 

10.6* 

10.7 

10.8 

10.9 

10.10 

10.11* 

10.12 

10.13* 

10.14 

10.15* 

10.16* 

10.17 

Amended and Restated Certificate of 
Incorporation, as filed with the Delaware 
Secretary of State on July 7, 2008. 
Amended and Restated Bylaws, effective as  
of July 8, 2008. 
Form of Indemnification Agreement between 
the Company and its directors and officers. 
2006 Stock Option/Stock Issuance Plan of 
the Company and forms of Stock Option and 
Stock Purchase Agreements thereunder. 
Amendment to 2006 Stock Option/Stock 
Issuance Plan of the Company. 
Second Amendment to 2006 Stock  
Option/Stock Issuance Plan of the Company. 
2008 Equity Incentive Plan of the Company 
and form of Stock Option Agreement 
thereunder. 
Energy Recovery Inc. Amended and Restated 
2008 Equity Incentive Plan 
Modified Industrial Gross Lease Agreement 
dated November 25, 2008, between the 
Company and Doolittle Williams, LLC. 
First Amendment to Modified Industrial 
Gross Lease dated May 28, 2009, between 
the Company and Doolittle Williams, LLC. 
Second Amendment to Modified Industrial 
Gross Lease dated June 26, 2009, between 
the Company and Doolittle Williams, LLC. 
Third Amendment to Modified Industrial 
Gross Lease dated November 10, 2010 
between the Company and Doolittle 
Williams, LLC 
Offer Letter dated February 14, 2011, to Mr. 
Thomas S. Rooney, Jr. 
Control Agreement dated July 7, 2011, 
between the Company, Citibank, N.A., 
Citigroup Global Markets Inc., and Morgan 
Stanley Smith Barney LLC. 
Energy Recovery, Inc. Change in Control  
Severance Plan dated March 5, 2012 
Loan Agreement dated June 5, 2012 between 
Company and HSBC Bank, USA, National 
Association 
Energy Recovery, Inc. Annual Incentive Plan 
dated January 1, 2014 
Offer Letter dated June 26, 2014, to Mr. Joel 
Gay 
Radakovich Settlement Agreement 

10-K 

001-34112 

3.1 

03/27/2009 

10-K 

001-34112 

3.2 

03/27/2009 

S-1/A 

333-150007 

10.1 

05/12/2008 

S-1 

333-150007 

10.5 

04/01/2008 

S-1 

333-150007 

10.5.1 

04/01/2008 

S-1 

333-150007 

10.5.2 

04/01/2008 

S-1/A 

333-150007 

10.6 

05/12/2008 

DEF14A  001-34112  Appendix A  04/27/2012 

10-K 

001-34112 

10.17 

03/27/2009 

10-Q 

001-34112 

10.17.1 

08/07/2009 

10-Q 

001-34112 

10.17.2 

08/07/2009 

10-K 

001-34112 

10.14 

03/12/2013 

8-K 

001-34112 

99.2 

02/15/2011 

10-Q 

001-34112 

10.43 

08/08/2011 

8-K 

001-34112 

10.1 

03/09/2012 

8-K 

001-34112 

10.1 

06/11/2012 

8-K 

001-34112 

10.1 

04/30/2014 

8-K/A 

001-34112 

99.2 

07/08/2014 

10-Q 

001-34112 

10.1 

11/10/2014 

-86- 

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Exhibit 
Number  Exhibit Description 

Form 

Incorporated by Reference 
File No. 

Exhibit 

Filed 

Filing Date  Herewith 

10.18* 

10.19* 

10.20 

10.21* 

10.22* 

10.23* 

10.24* 

10.25 
10.26* 

10.27 

10.28* 

Amendment to Offer Letter dated as of 
January 12, 2015 to Mr. Thomas S. Rooney, 
Jr. 
Draft Consulting Agreement with Thomas S. 
Rooney, Jr. 
Resignation, Transition, and Separation 
Agreement with Audrey Bold 
Energy Recovery, Inc. 2015 Annual 
Incentive Plan 
Offer Letter dated April 22, 2015 to Mr. Joel 
Gay 
Promotion Letter dated April 30, 2015 to Ms. 
Sharon Smith-Lenox 
Offer Letter dated May 5, 2015 to Mr. Eric 
Siebert, 
Settlement and Mutual Release Agreement 
Offer Letter dated May 13, 2015 to Mr. Chris 
Gannon 
Second Amendment to Loan Agreement with 
HSBC Bank USA, National Association 
Offer Letter dated September 17, 2015 to Ms. 
Emily Smith 

8-K 

001-34112 

10.1 

01/13/2015 

8-K 

001-34112 

10.2 

01/13/2015 

8-K 

001-34112 

99.1 

04/16/2015 

8-K 

001-34112 

10.1 

04/29/2015 

8-K 

001-34112 

99.2 

04/29/2015 

8-K 

001-34112 

99.1 

05/01/2015 

10-K 

001-34112 

10.25 

03/03/2016 

8-K 
8-K 

001-34112 
001-34112 

99.1 
99.1 

05/13/2015 
05/15/2015 

10-Q 

001-34112 

10.7 

08/06/2015 

10-K 

001-34112 

10.30 

03/03/2016 

10.29**  License Agreement by and between ERI 

10-K 

001-34112 

10.31 

03/03/2016 

10.30* 
10.31* 

10.32* 
10.33* 

10.34 

14.1 

18.1 

21.1 
23.1 

31.1 

99.1 

10-K 

8-K 
8-K 

10.1 
99.1 

001-34112 

001-34112 

001-34112 
001-34112 

03/01/2016 
03/18/2016 

Energy Recovery Ireland, Ltd. and 
Schlumberger Technology Corporation 
Energy Recovery, Inc. Annual Incentive Plan 
Transition and Separation Agreement dated 
March 15, 2016 by and between Energy 
Recovery, Inc. and Mr. Juan Otero 
Energy Recovery, Inc. 2016 Incentive Plan  DEF14A  001-34112  Appendix A  04/27/2016 
06/22/2016 
8-K 
Offer Letter dated May 27, 2016 to Mr. 
William Yeung 
Loan and Pledge Agreement between Energy 
Recovery, Inc. as Borrower, and Citibank, 
N.A. as Lender 
Code of Ethics of Energy Recovery, Inc. 
Additional Conduct and Ethics Policies for 
the Chief Executive Officer and Senior 
Financial Officers. 
BDO USA, LLP, Letter re Change in Method 
of Accounting for Inventory Valuation 
List of subsidiaries of the Company. 
Consent of BDO USA, LLP, Independent  
Registered Public Accounting Firm. 
Certification of Principal Executive Officer  
pursuant to Exchange Act Rule 13a-
14(a) or 15d-14(a), as adopted pursuant  
to Section 302 of the Sarbanes-Oxley Act  
of 2002. 

05/08/2014 

03/27/2009 

001-34112 

001-34112 

10-Q 

10-K 

18.1 

14.1 

X 

X 
X 

X 

-87- 

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
Exhibit 
Number  Exhibit Description 

Form 

31.2 

32.1 

Certification of Principal Financial Officer  
pursuant to Exchange Act Rule 13a-14(a)  
or 15d-14(a), 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. 

Incorporated by Reference 
File No. 

Exhibit 

Filed 

Filing Date  Herewith 

X 

X 

101.INS  XBRL Instance Document 
101.SCH  XBRL Taxonomy Extension Schema Document 
101.CAL  XBRL Taxonomy Extension Calculation Linkbase Document 
101.DEF  XBRL Taxonomy Extension Definition Linkbase Document 
101.LAB  XBRL Taxonomy Extension Label Linkbase Document 
101.PRE  XBRL Taxonomy Extension Presentation Linkbase Document 

Indicates management compensatory plan, contract or arrangement. 

* 
**  Portions of this exhibit have been omitted based on a request for Confidential Treatment submitted to the Securities and
Exchange Commission (the “SEC”). The omitted information has been filed separately with the SEC as a part of the
confidential  treatment  request.  In  the  event  that  the  SEC  should  deny  such  request  in  whole  or  in  part,  the  relevant,
previously omitted portions of this exhibit shall be publicly filed. 

-88- 

   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
  
  
 
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