Quarterlytics / Industrials / Manufacturing - Miscellaneous / Proto Labs, Inc.

Proto Labs, Inc.

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FY2017 Annual Report · Proto Labs, 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, 2017 

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: 001-35435 

Proto Labs, Inc. 

(Exact name of Registrant as specified in its charter) 

Minnesota 
(State or other jurisdiction of incorporation or organization) 

41-1939628 
(I.R.S. Employer Identification No.) 

5540 Pioneer Creek Drive 
Maple Plain, Minnesota 
(Address of principal executive offices) 

55359 
(Zip Code) 

(763) 479-3680 
(Registrant’s telephone number, including area code) 
Securities registered pursuant to Section 12(b) of the Act: 

Title of Each Class 
Common Stock, Par Value $0.001 Per Share 

Name of Each Exchange on Which Registered 
New York Stock Exchange 

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

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

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes ☐  No ☒ 
Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act 
of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject 
to such filing requirements for the past 90 days.  Yes ☒  No ☐ 
Indicate by check mark whether the Registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File 
required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the 
Registrant was required to submit and post such files).  Yes  ☒  No  ☐ 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, 
to the best of Registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any 
amendment to this Form 10-K.  ☒ 
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, 
or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging 
growth company” in Rule 12b-2 of the Exchange Act.  

Large accelerated filer ☒ 

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

Accelerated filer ☐ 

Smaller reporting company ☐ 
Emerging growth company ☐ 

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

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes ☐  No ☒ 
As of June 30, 2017 (the last business day of the Registrant’s most recently completed second fiscal quarter), the aggregate market value of voting 
stock held by non-affiliates of the Registrant was approximately $1.8 billion. 
As of February 14, 2018, there were 26,901,193 shares of the Registrant’s common stock outstanding. 

DOCUMENTS INCORPORATED BY REFERENCE 
Portions of the Registrant’s Proxy Statement for its 2018 Annual Meeting of Shareholders are incorporated by reference to Part III of this Annual 
Report on Form 10-K. 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Table of Contents 

PART I 

Page 

Business ....................................................................................................................................................... 

Item 1. 
4 
Item 1A.  Risk Factors .................................................................................................................................................  12 
Item 1B.  Unresolved Staff Comments ........................................................................................................................  26 
Properties .....................................................................................................................................................  26 
Item 2. 
Item 3. 
Legal Proceedings ........................................................................................................................................  27 
Item 4.  Mine Safety Disclosures ..............................................................................................................................  27 

PART II 

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

Securities .....................................................................................................................................................  28 
Item 6. 
Selected Financial Data ...............................................................................................................................  29 
Item 7.  Management's Discussion and Analysis of Financial Condition and Results of Operations .......................  32 
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk .....................................................................  47 
Financial Statements and Supplementary Data ............................................................................................  49 
Item 8. 
Item 9. 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure ......................  80 
Item 9A.  Controls and Procedures ..............................................................................................................................  80 
Item 9B.  Other Information ........................................................................................................................................  80 

PART III 
Item 10.  Directors, Executive Officers and Corporate Governance ...........................................................................  81 
Item 11.  Executive Compensation .............................................................................................................................  81 
Item 12.  Security Ownership of Certain Beneficial Owners and Management .........................................................  81 
Item 13.  Certain Relationships and Related Transactions, and Director Independence .............................................  81 
Item 14.  Principal Accountant Fees and Services ......................................................................................................  81 

PART IV 
Item 15.  Exhibits and Financial Statement Schedules ...............................................................................................  82 

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Special Note Regarding Forward Looking Statements 

Statements contained in this Annual Report on Form 10-K regarding matters that are not historical or current facts 
are “forward-looking statements” within the meaning of The Private Securities Litigation Reform Act of 1995. In some cases, 
you can identify forward-looking statements by the following words: “may,” “will,” “could,” “would,” “should,” “expect,” 
“intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “ongoing” or the negative 
of these terms or other comparable terminology, although not all forward-looking statements contain these words. These 
statements involve known and unknown risks, uncertainties and other factors which may cause our results to be materially 
different than those expressed or implied in such statements. In particular, some of the risks associated with our business 
include: 

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the level of competition in our industry and our ability to compete; 

our ability to respond to changes in our industry; 

our ability to effectively grow our business and manage our growth; 

our ability to continue to sell to existing and new customers; 

our ability to meet product developers’ and engineers’ needs and expectations regarding quick turnaround time, price
and specifications for quality; 

the adoption rate of e-commerce and 3D CAD software by product developers and engineers; 

our ability to process a large volume of designs and identify significant opportunities in our business; 

our ability to maintain and enhance our brand; 

our ability to successfully identify, complete and integrate acquisitions or other strategic transactions; 

the loss of key personnel or failure to attract and retain additional personnel; 

system interruptions at our operating facilities; 

possible unauthorized access to customers’ confidential information stored in our systems; and 

our ability to protect our intellectual property and not infringe on others’ intellectual property. 

Certain of these factors and others are described in the discussion on risk factors that appear in Part I, Item 1A. “Risk 
Factors” of this Annual Report on Form 10-K and uncertainties are detailed in this and other reports and filings with the 
Securities  and  Exchange  Commission  (SEC).  Other  unknown  or  unpredictable  factors  also  could  have  material  adverse 
effects  on  our  future  results.  We  cannot  guarantee  future  results,  levels  of  activity,  performance  or  achievements. 
Accordingly, you should not place undue reliance on these forward-looking statements. Finally, we expressly disclaim any 
intent or obligation to update any forward-looking statements to reflect subsequent events or circumstances. 

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Item 1. Business 

Overview 

PART I 

Proto Labs, Inc. was incorporated in Minnesota in 1999. The terms “Proto Labs,” the “Company,” “we,” “us,” and 
“our” as used herein refer to the business and operations of Proto Labs, Inc. and its subsidiaries. We are the world’s largest 
and fastest digital manufacturer of custom prototypes and on-demand production parts. Our mission is to help companies 
accelerate product development, reduce risk, and optimize supply chains by providing quality prototyping and on-demand 
manufacturing services at unprecedented speeds. Our automated quoting and manufacturing systems allow us to produce 
commercial-grade plastic, metal, and liquid silicone rubber parts within days. We manufacture prototype and low volume 
production parts for companies worldwide, who are under increasing pressure to bring their finished products to market faster 
than their competition. We utilize injection molding, computer numerical control (CNC) machining, 3D printing and sheet 
metal fabrication to manufacture custom parts for our customers. Our proprietary technology eliminates most of the time-
consuming and expensive skilled labor conventionally required to quote and manufacture parts. Our customers conduct nearly 
all of their business with us over the Internet. We target our products to the millions of product developers and engineers who 
use three-dimensional computer-aided design (3D CAD) software to design products across a diverse range of end-markets. 
We  have  established  our  operations  in  the  United  States,  Europe  and  Japan,  which  we  believe  are  three  of  the  largest 
geographic markets where these product developers and engineers are located. We believe our use of advanced technology 
enables us to offer significant advantages at competitive prices to many customers and is the primary reason we have become 
a leading supplier of custom parts. 

We  believe  custom  parts  manufacturing  has  historically  been  an  underserved  market  due  to  the  inefficiencies 
inherent in the quotation, equipment set-up and non-recurring engineering processes required to produce custom parts. Our 
customers typically order short run custom parts for a variety of reasons, including: 

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they  need  a  prototype  to  confirm  the  form,  fit  and  function  of  one  or  more  components  of  a  product  under
development; 
they need an initial supply of parts to support pilot production for testing of a product; 
they need an initial supply of parts to support production while their high-volume production mold is being prepared;
they need to meet their customers' variable demand for custom parts in a competitive timeframe; 
their product will only be released in a limited quantity; or 
they need to support end-of-life production in a cost-effective manner.  

In each of these instances, we believe our solution provides product developers, engineers, and supply chains with 
an exceptional combination of speed, quality, competitive pricing, ease of use and reliability that they typically cannot find 
among conventional custom parts manufacturers. Our technology enables us to ship parts as soon as the same day after receipt 
of a customer’s design submission. 

Our primary manufacturing product lines currently include Injection Molding, CNC Machining, 3D Printing and 
Sheet Metal. We continually seek to expand the range of size and geometric complexity of the parts we can make with these 
processes, to extend the variety of materials we are able to support and to identify additional manufacturing processes to 
which we can apply our technology in order to better serve the evolving preferences and needs of product developers and 
engineers. 

We have experienced significant growth since our inception in 1999. We have grown our total revenue from $163.1 
million in 2013 to $344.5 million in 2017. We have grown our income from operations from $51.3 million in 2013 to $72.2 
million in 2017. 

Our increases in revenue and income from operations can be attributed to expanding our customer base, broadening 
our parts envelope, and launching new manufacturing technologies. We were founded in 1999 with plastic injection molding, 
and have expanded our product lines over the years by the introduction of:  

•  CNC machining in 2007; 
• 

• 

liquid silicon rubber (LSR) and lathe manufacturing processes that expanded the breadth and scope of our injection 
molding and CNC machining product lines in 2014; 
3D  printing,  including  stereolithography  (SL),  selective  laser  sintering  (SLS),  and  direct  metal  laser  sintering
(DMLS),  through  our  acquisition  of  FineLine  Prototyping,  Inc.  (FineLine)  in  2014  and  expanded  through  our
acquisition of certain assets of Alphaform AG (Alphaform) in 2015; 

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• 

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rapid overmolding technology in 2016 and insert molding technology in 2017, both of which expanded the breadth
of our manufacturing capabilities in our Injection Molding product line; 
PolyJet and Multi Jet Fusion (MJF) in 2017, which expanded the processes with which we produce 3D printed parts;
injection molding commercial offerings tailored to on-demand manufacturing customers in 2017;  
sheet metal fabrication capability through our acquisition of RAPID Manufacturing Group, LLC (RAPID) in 2017;
and 
expanded CNC machining capabilities for larger and more complex parts through our acquisition of RAPID in 2017.

Industry Overview 

Our Industry 

We  serve  product  developers  and  engineers  worldwide  who  bring  new  ideas  to  market  in  the  form  of  products 
containing one or more custom parts. Many of these product developers and engineers use 3D CAD software to create digital 
models representing their custom part designs that are then used to create physical parts for concept modeling, prototyping, 
functional testing, market evaluation or production. Custom prototype parts play a critical role in the product development 
process, as they provide product developers and engineers with the ability to test and confirm their intended performance 
requirements and explore design alternatives.  

Early in the product development process, 3D printing processes such as SL and PolyJet can be used to quickly 
produce an approximate physical representation of a part, but these representations may not meet product developers’ and 
engineers’ requirements for material properties. As an alternative, injection molding, CNC machining, sheet metal, and 3D 
printing processes such as SLS, DMLS, and MJF can be used to produce low volumes of high-quality custom parts in either 
metal or plastic. For follow-on functional testing, market evaluation and production runs, parts are typically manufactured 
using injection molding, CNC machining and sheet metal fabrication.  

Our Solution 

We have developed proprietary software and advanced manufacturing processes that automate much of the skilled 
labor  conventionally  required  in  quoting,  production  engineering  and  manufacturing  of  custom  parts.  We  believe  our 
interactive web-based interface and highly automated processes address the desires of many product developers and engineers 
for a fast, efficient and cost-effective means to obtain custom parts, and are the primary reasons we have become a leading 
supplier of custom parts. 

Key elements of our solution include: 

Sophisticated Technology that Reduces Turnaround Time 

Our digital model is centered on our web-based interface and proprietary software, which automate many of the 
manual and time-consuming processes typically required to obtain custom parts from conventional suppliers. Our platform 
automates  many  aspects  of  the  entire  process  from  design  submission  through  manufacturability  analysis  and  feedback, 
quotation, order submission, mold design, tool path generation, mold or part manufacture and digital inspection. To utilize 
our platform, a prospective customer uploads a 3D CAD file of their required part through our website. Often within minutes 
of design submission, our software analyzes the design, assesses the manufacturability of the design and our ability to make 
the part, and returns a firm price quotation with any recommendations for design modifications. Many of our customers find 
this analysis particularly helpful, as it diagnoses and prevents potential problems prior to manufacturing. We can also provide 
a flow analysis to identify design flaws that limit the ability to manufacture a quality part.  

Our quoting system is highly interactive, enabling our prospective customers to change the material, finish, quantity 
or  shipping  schedule  of  orders,  and  to  instantly  receive  an  updated  quotation.  Once  an  order  is  received,  our  software 
automates much of the manual engineering and skilled labor that is normally required to manufacture parts. As a result, in 
many cases we are able to quote orders in minutes and ship parts as soon as the same day ordered. 

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Scale to Process Large Numbers of Unique Part Designs 

Our  proprietary,  highly  scalable  quoting  technology  addresses  the  manual  processes  conventionally  involved  in 
submitting  a  design,  analyzing  its  manufacturability,  making  design  revision  recommendations  and  generating  price 
quotations. This enables us to quickly analyze high volumes of 3D CAD part design submissions and provide feedback to 
our prospective product developer and engineer customers. In 2017 alone, we generated quotations for over 800,000 design 
submissions.  Our  proprietary  manufacturing  automation  technology  is  also  highly  scalable,  enabling  us  to  process  large 
numbers of unique designs and, combined with our manufacturing processes, efficiently and effectively manufacture high 
volumes of parts to meet the needs of product developers and engineers. 

Enhanced Customer Experience 

Our  web-based  customer  interface  provides  a  straightforward  means  of  submitting  3D  CAD  part  designs.  Our 
proprietary  manufacturability  analysis  then  quickly  analyzes  whether  a  part  design  falls  within  our  manufacturing 
capabilities. In many cases, our software provides suggested design modifications to enhance manufacturability, which is 
presented to the product developer or engineer in an interactive quotation containing a color-coded 3D representation of the 
part. This allows product developers and engineers to quickly determine the manufacturability of their parts, understand the 
cost and when they can be shipped. Our interactive quotations provide instant visibility into the impact of changing an order’s 
various parameters such as material, finish, quantity or shipping schedule. As a result, we provide product developers and 
engineers with an easy-to-use and consistent means to obtain custom parts. 

Attractive Custom Pricing 

Based on internal market research, we believe we generally have competitive pricing on custom orders. We believe 
this,  combined  with  speed, is  a  direct  result  of  our  technology  and  the  efficiency  of  our  operations,  both  of  which  were 
designed  specifically  for  lower  volume  runs  of  custom  parts  production.  By  limiting  these  costs,  we  can  typically  offer 
attractive pricing not normally possible in the low volume, high mix custom parts market, and as a result, we can typically 
offer product developers and engineers competitive prices on custom manufactured parts.  

Our Product Lines 

Our Injection Molding, CNC Machining, 3D Printing and Sheet Metal product lines offer many product developers 
and  engineers  the  ability  to  quickly  and  efficiently  outsource  their  quick-turn  custom  parts  manufacturing.  See  Item  7. 
“Management’s  Discussion  and  Analysis  of  Financial  Condition  and  Results  of  Operations”  for  the  historical  revenue 
generated by each of Injection Molding, CNC Machining, 3D Printing and Sheet Metal. 

Injection Molding 

Our Injection Molding product line uses our 3D CAD-to-CNC machining technology for the automated design and 
manufacture  of  molds,  which  are  then  used  to  produce  custom  plastic  and liquid  silicone  rubber  injection-molded  parts 
and over-molded  and insert-molded injection-molded  parts  on  commercially  available  equipment.  Our  Injection  Molding 
product  line  works  best  for  on-demand  production,  bridge  tooling,  pilot  runs  and  functional  prototyping.  Our  affordable 
aluminum molds and quick turnaround times help reduce design risk and limit overall production costs for product developers 
and  engineers.  Prototype  quantities  typically  range  from  25  to  100  parts.  Because  we  retain  possession  of  the  molds, 
customers  who  need  short-run  production  often  come  back  to  Proto  Labs’  Injection  Molding  product  line  for  additional 
quantities. They do so to support pilot production for product testing, while their tooling for high-volume production is being 
prepared,  because  they  need  on-demand  manufacturing  due  to  disruptions  in  their  manufacturing  process,  because  their 
product requires limited annual quantity or because they need end-of-life production support. In 2017, we launched an on-
demand manufacturing injection molding service. This service utilizes our existing processes, but is designed to fulfill the 
needs of customers with on-going production needs, typically in annual volumes of less than 10,000 parts. 

CNC Machining 

Our CNC Machining product line uses commercially available CNC machines to offer milling and turning. CNC 
milling is a manufacturing process that cuts plastic and metal blocks into one or more custom parts based on the 3D CAD 
model uploaded by the product developer or engineer. CNC turning with live tooling combines both lathe and mill capabilities 
to  machine  parts  with  cylindrical  features  from  metal  rod  stock.  Our  efficiencies  derive  from  the  automation  of  the 
programming of these machines and a proprietary fixturing process. Quick-turn CNC machining works best for prototyping, 
form and fit testing, jigs and fixtures and functional components for end-use applications. The CNC Machining product line 
is well suited to produce small quantities, typically in the range of one to 200 parts. 

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3D Printing 

Our 3D Printing product line includes SL, SLS, DMLS, MJF and PolyJet processes, which offers customers a wide-
variety of high-quality, precision rapid prototyping and low volume production. These processes create parts with a high 
level  of  accuracy,  detail,  strength  and  durability.  Industrial  3D  Printing  is  best  suited  for  functional  prototypes,  complex 
designs and end-use applications. 3D Printing is well suited to produce small quantities, typically in the range of one to 50 
parts. 

Sheet Metal 

Our  Sheet  Metal  product  line  includes  quick-turn  and  e-commerce-enabled  custom  sheet  metal  parts,  providing 
customers with prototype and low-volume production parts. The rapid prototype sheet metal process is most often used when 
form, fit and function are all a priority. Our manufacturing process uses customer 3D CAD models uploaded by the product 
developer or engineer to fabricate quick turn prototype sheet metal or short run production parts. The Sheet Metal product 
line is well suited to produce quantities in the range of one to 500 parts. 

Our Process 

The process for Injection Molding begins when the product developer or engineer uploads one or more 3D CAD 
models representing the desired part geometry through our website. Our proprietary software uses complex algorithms to 
analyze the 3D CAD geometry, analyze its manufacturability and support the creation of an interactive, web-based quotation 
containing pricing and manufacturability information. A link to the quotation is then e-mailed to the product developer or 
engineer, who can access the quotation, change a variety of order parameters and instantly see the effect on price before 

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finalizing  the  order.  Our  proprietary  software  supports  the  creation  of  the  mold  design  and  the  tool  paths  required  to 
manufacture the mold components, which are then routed to our CNC machining centers for execution. Once the mold is 
assembled, it is placed in one of our injection molding presses to create the required parts. Parts are shipped in as little as one 
business day from design submission. We ship our parts via small parcel common carriers on standard terms and conditions. 
Our other services have similar processes, but differ mainly due to the nature of the manufacturing processes on which each 
service is based.    

Our Growth Strategy 

The principal elements of our growth strategy are to: 

Expand the Customer Base 

We plan to expand our customer base to serve more product developers and engineers within the companies that 
have already used our product lines. Individual product developers and engineers typically make or influence the choice of 
vendor when sourcing custom parts. We believe a significant opportunity exists for us to leverage highly satisfied product 
developers and engineers to encourage others within the same organization to utilize our product lines. We have historically 
gained a significant number of new customers through word-of-mouth referrals from other product developers and engineers, 
and combine these referrals with the efforts of our marketing and sales force to identify and market our product lines to the 
colleagues of our existing customers. 

We also plan to use our marketing and sales capabilities to continue to pursue product developers and engineers 
within companies who have not yet used our products. Our presence in geographic regions that have high populations of 3D 
CAD users provides us with a broad universe of potential new customer companies on which to focus our marketing and 
sales efforts. 

We  believe  there  may  be  opportunities  to  grow  by  identifying  and  expanding  into  select  additional  geographic 
markets. We currently operate in the United States, Europe and Japan, where we believe a substantial portion of the world’s 
product developers and engineers are located. We entered the European market in 2005 and launched operations in Japan in 
2009. For 2017, revenue earned in these markets represents approximately 24% of our total revenue. While we currently do 
not have specific plans to expand into any particular geographic markets, we believe opportunities exist to serve the needs of 
product developers and engineers in select new geographic regions and we will continue to evaluate such opportunities if and 
when they arise.  

We plan to further enhance the functionality and ease of use of our platform and expand the capabilities of our 
technology  in  order  to  further  increase  automation  and  meet  the  evolving  needs  of  product  developers  and  engineers 
worldwide.  We  believe  product  developers  and  engineers  have  come  to  expect  advanced  web-based  tools  and  a  fully 
integrated  Internet  platform  from  their  vendors.  We  will  continue  to  use  the  Internet  to  provide  product  developers  and 
engineers with a standardized interface through which they can upload their 3D CAD models and obtain firm, interactive 
quotations quickly and efficiently. 

Launch New Manufacturing Technology 

We seek to identify additional manufacturing processes to which we can apply our digital technology and expertise 
to  meet  a  greater  range of product developers’  and  engineers’  needs. Introducing  new  manufacturing processes  can both 
attract new customers and provide us with a significant opportunity to cross-sell our existing product lines to our existing 
customer base. We regularly evaluate new manufacturing processes to offer product developers and engineers and introduce 
such new processes when we are confident that a sufficient market demand exists and that we can offer the same advantages 
our customers have come to expect from us. See Item 6. “Selected Financial Data” for disclosure of our historical research 
and development expenses. 

We were founded with Injection Molding which represents 56.4% of our total revenue for the year ended December 
31, 2017. Examples of new manufacturing services we have added include CNC Machining, 3D Printing and Sheet Metal. 
Our CNC Machining product line was first introduced in the United States in 2007, expanded to Japan in 2009 and Europe 
in 2012, and further expanded in the United States through our acquisition of RAPID in November 2017. CNC Machining 
represents  30.1%  of  our  total  revenue  for  the  year  ended  December  31,  2017.  3D  printing  technologies  were  introduced 
through our acquisition of FineLine in April 2014. We further expanded our 3D printing capabilities in October 2015 through 
our acquisition of Alphaform. Our 3D product line represents 12.6% of our total revenue for the year ended December 31, 
2017. Our Sheet Metal product line was introduced through our acquisition of RAPID in November 2017 and represents $1.8 
million of total revenue for the year ended December 31, 2017. 

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We continue to expand our core product lines through product launches including liquid silicone rubber injection 
molding,  lathe-turned  parts,  rapid  overmolding,  insert  molding,  PolyJet  and  MJF.  We  introduced  liquid  silicone  rubber 
injection molding during 2014 and in 2015, we introduced lathe-turned products. In 2016, we expanded the breadth of our 
manufacturing  capabilities  by  adding  rapid  overmolding  technology.  In  2017,  we  added  insert  molding  to  our  Injection 
Molding  product  line  and  PolyJet  and  MJF  to  our  3D  Printing  product  line.  In  addition,  we  launched  on-demand 
manufacturing to address the needs of the low-volume, high-mix product segment. We also opened our first metrology lab 
in 2017 for enhanced inspection reporting on end-use production parts, including First Article Inspection Reports and digital 
inspection reports.  

Broaden the Parts Envelope 

We regularly analyze the universe of customer design submissions that we are currently unable to manufacture and 
focus a portion of our research and development efforts to expand the range of parts that we can produce. Since we first 
introduced our Injection Molding product line in 1999, we have steadily expanded the size and geometric complexity of the 
injection-molded parts we are able to manufacture, and we continue to extend the diversity of materials we are able to support. 
Similarly, since first introducing our CNC Machining product line in 2007, we have expanded the range of part sizes, design 
geometries and materials we can support. In 2017, we launched two new 3D Printing processes, which strengthened our 
capability to manufacture complex part geometries quickly and accurately. Through our acquisition of RAPID in November 
2017, we added quick-turn and e-commerce-enabled Sheet Metal services to our portfolio and expanded our CNC Machining 
capabilities  to  support  larger  and  more  complex  projects.  As  we  continue  to  expand  the  range  of  our  existing  process 
capabilities, we believe we will meet the needs of a broader set of product developers and engineers and consequently convert 
a higher number of quotation requests into orders. 

Marketing 

Our global marketing effort generates prospects for our sales teams and seeks to strengthen our reputation as an 
industry leader in digital manufacturing services for custom prototyping and low-volume manufacturing. Since we are an 
agile, technology-based company, much of our marketing activities occur online. We use marketing automation software to 
enhance the productivity of our marketing and sales teams and continuously track the results of every campaign to ensure 
our return on investment. 

We maintain top-of-mind brand awareness with product developers and engineers through regular publication of 
technical information including design guidelines and helpful tips, engineering white papers, educational webinars, quick 
videos, and a quarterly journal focused on important industry topics. We also provide complimentary physical design aids to 
designers and engineers — as well as teachers and students — that highlight technical aspects of injection molding to help 
create efficient, well-designed parts. We believe these educational materials are key aspects of our lead generation efforts. 

Marketing  represents  the  face  of  Proto  Labs,  so  it  is  our goal  to  actively  and  intelligently  engage  designers  and 
engineers across multiple mediums — whether print, online, social media or in person. By doing this, we gain new customers, 
drive sales and build brand equity. 

Sales and Customer Service 

We maintain an internal sales team trained in the basics of part design and the capabilities of our manufacturing 
product lines, as well as the key advantages of our processes over alternate methods of custom parts manufacturing. We 
organize  our  sales  team  into  complementary  roles:  business  development,  account  management  and  strategic  account 
management, with the former focused on selling to new customer companies and the latter two focused on expanding sales 
within existing customer companies.  

We believe our sales staff is adept at researching customer companies and networking to find additional product 
developers and engineers who may have a need for our products. We also have a team of customer service engineers who 
can  support  highly  technical  engineering  discussions  with  product  developers  and  engineers  as  required  during  the  sales 
process. Our revenue is generated from a diverse customer base, with no single customer company representing more than 
2% of our total revenue in 2017. 

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Competition 

The market for custom parts manufacturing is fragmented, highly competitive and subject to rapid and significant 

technological change. Our potential competitors include: 

•  Captive in-house product manufacturing. Many larger companies undertaking product development have established
additive  rapid  prototyping  (3D  printing),  CNC  machining  or  injection  molding  capabilities  internally  to  support 
prototyping or manufacturing requirements of their product developers and engineers. 

•  Other  custom  parts  manufacturers.  There  are  thousands  of  alternative  manufacturing  machine  shops,  injection
molding suppliers, 3D printing service bureaus and vendors worldwide. The size and scale of these businesses range
from very small specialty shops to large, high-volume production manufacturers. 

We believe that the key competitive factors in our industry include: 

•  Quality: dimensional accuracy, surface finish, material properties, color and cleanliness; 

• 

Speed: turnaround time for quotations and parts; 

•  Reliability: greater than 97% on-time delivery; 

• 

Service: overall customer experience, from web interface to post-sales support; 

•  Capability: range of part sizes and dimensional complexities supported, variety of manufacturing processes offered,

materials supported and post-processing provided; 

• 

Scale: ability to support thousands of part designs in parallel; 

•  Capacity: ability to manage peaks in demand with very short lead times and no minimum order quantities; and 

• 

Price: mold and part pricing. 

We believe that our digital end-to-end manufacturing capability positions us favorably and has enabled us to become 
a leader in our markets. We also believe that substantially all of our current direct competitors are relatively small in terms 
of  size  of  operations,  revenue,  number  of  customers  and  volume  of  parts  sold,  and  generally  lack  our  technological 
capabilities. However, our industry is evolving rapidly and other companies, including potentially larger and more established 
companies  with  developed  technological  capabilities,  may  begin  to  focus  on  low  volume,  high  mix  custom  parts 
manufacturing. These companies could more directly compete with us, along with our existing competitors, and could also 
launch new products and product lines that we do not offer that may quickly gain market acceptance. Any of the foregoing 
could adversely affect our ability to attract customers. 

Intellectual Property 

We regard our patents, trademarks, service marks, trade dress, trade secrets, copyrights, domain names and other 
intellectual property as valuable to our business and rely on patent, trademark and copyright law, trade secret protection and 
confidentiality and/or license agreements with our employees, customers, vendors and others to protect our proprietary rights. 
We register our patents, trademarks and service marks in the United States and other jurisdictions as we deem appropriate. 
As of December 31, 2017, we owned and had applications pending for patents relating to various aspects of our quoting and 
manufacturing processes as follows: 

Jurisdiction 
United States ....................................................................................................     
United Kingdom ...............................................................................................     
Germany ...........................................................................................................     

Issued  
Patents 
17 
2 
0 

Applications  
Pending 
6 
0 
2 

Our patents have expiration dates ranging from 2022 to 2032. We also owned approximately 17 registered and 6 
pending United States trademarks or service marks as of December 31, 2017, with corresponding registered protection in 
Europe  and  Japan  for  the  most  important  of  these  marks  such  as  PROTO  LABS,  PROTOMOLD,  FIRSTCUT, 
PROTOQUOTE, FIRSTQUOTE, PROTOFLOW and FINELINE, corresponding approved protection in Canada for PROTO 
LABS,  FIRSTCUT  and  FINELINE,  and  corresponding  registered  protection  in  Australia,  Canada  and  Mexico  for 

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PROTOMOLD. There can be no assurance that the steps we take to protect our proprietary rights will be adequate or that 
third parties will not infringe or misappropriate such rights. We have been subject to claims and expect to be subject to legal 
proceedings and claims from time to time in the ordinary course of our business. In particular, we may face claims from third 
parties  that  we  have  infringed  their  patents,  trademarks  or  other  intellectual  property  rights.  Such  claims,  even  if  not 
meritorious, could result in the expenditure of significant financial and managerial resources. Any unauthorized disclosure 
or use of our intellectual property could make it more expensive to do business and harm our operating results. 

Employees 

As of December 31, 2017 we had 2,266 full-time employees. We also regularly use independent contractors and 
other  temporary  employees  across  the organization  to  augment  our  regular  staff. We believe  that our  future  success  will 
depend in part on our continued ability to attract, hire and retain qualified personnel. 

Information About Segment and Geographic Revenue 

Information about segment and geographic revenue is set forth in Note 17 – Segment Reporting of the Notes to our 

consolidated financial statements, which appears in Part II, Item 8 of this Annual Report on Form 10-K. 

Available Information 

Our principal executive offices are located at 5540 Pioneer Creek Drive, Maple Plain, Minnesota 55359 and our 
telephone  number  is  (763) 479-3680.  Our  website  address  is  www.protolabs.com.  Information  on  our  website  does  not 
constitute part of this Annual Report on Form 10-K or any other report we file or furnish with the SEC. We provide free 
access to various reports that we file with or furnish to the SEC through our website as soon as reasonably practicable after 
they have been filed or furnished. These reports include, but are not limited to, our Annual Reports on Form 10-K, Quarterly 
Reports on Form 10-Q, Current Reports on Form 8-K and any amendments to these reports. Our SEC reports can be accessed 
through the investor relations section of our website. 

The public may read and copy any materials that we file with the SEC at the SEC’s Public Reference Room at 100 
F Street, N.E., Washington, D.C. 20549. The public may obtain information on the operation of the Public Reference Room 
by calling the SEC at 1-800-SEC-0330. The SEC maintains a website that contains reports, proxy and information statements, 
and other information regarding issuers that file information electronically with the SEC. The SEC’s website is www.sec.gov. 

Executive Officers of the Registrant 

Set  forth  below  are  the  names  of  our  current  executive  officers,  their  ages,  titles,  the  year  first  appointed  as  an 

executive officer, and employment for the past five years: 

Victoria M. Holt ............ 60    President, Chief Executive Officer and Director 
Robert Bodor ................. 45    Vice President/General Manager – Americas 
John A. Way .................. 45    Chief Financial Officer and Executive Vice President of Development 
Arthur R. Baker III ........ 50    Chief Technology Officer 
David M. Fein ............... 49    Chief Revenue Officer 
Bjoern Klaas .................. 48    Vice President/General Manager and Managing Director – Europe, Middle East and Africa 

Executive officers of the Company are elected at the discretion of the board of directors with no fixed terms. There 

are no family relationships between or among any of the executive officers or directors of the Company. 

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Victoria M. Holt. Ms. Holt has been our President and Chief Executive Officer since February 2014. Prior to joining 
Proto Labs, Ms. Holt served as President and Chief Executive Officer of Spartech Corporation, a leading producer of plastic 
sheet, compounds and packaging products, from September 2010 until Spartech was purchased by PolyOne Corporation in 
March 2013. Ms. Holt also is a member of the Board of Directors of Waste Management, Inc.  

Robert Bodor. Dr. Bodor has served as our Vice President/General Manager - Americas since January 2015. From 
July 2013 to January 2015, Dr. Bodor served as our Chief Technology Officer. From December 2012 to June 2013, Dr. Bodor 
served as our Director of Business Development. Prior to joining Proto Labs, from January 2011 to December 2012, Dr. 
Bodor held several roles at Honeywell, most recently leading SaaS business offerings for Honeywell’s Life Safety Division. 

John A. Way. Mr. Way has served as our Chief Financial Officer and Executive Vice President of Development 
since December 2014. From October 2013 to September 2014, Mr. Way served as Chief Financial Officer of Univita Health 
Inc.,  a  privately  held  home  healthcare  service  provider.  From  September  2012  to  July  2013,  Mr. Way  served  as  Chief 
Financial Officer of Virtual Radiologic, a global telemedicine company. From October 2002 to November 2012, Mr. Way 
worked in senior financial positions at several divisions within UnitedHealth Group, including Chief Financial Officer of 
Optum Collaborative Care, SecureHorizons and OptumHealth.  

Arthur R. Baker III. Dr. Baker has been our Chief Technology Officer since May 2016. Prior to joining Proto Labs, 
Dr. Baker served as Chief Technology Officer of PaR Systems, a robotics and specialty machine tool builder. From 2005 to 
2014, Dr. Baker held multiple positions at MTS Systems, including General Manager of the Test Division, Chief Technology 
Officer, and Vice President of Engineering and Operations. MTS Systems was a leader in mechanical testing and simulation 
systems for automotive, aerospace, medical, civil-seismic and general research.  

David M. Fein. Mr. Fein has been our Chief Revenue Officer since December 2016. Prior to joining Proto Labs, 
Mr. Fein spent 16 years at PMC-Sierra, Inc., a semiconductor and software solutions provider for big data storage, optical 
transport  networks  and  wireless  infrastructure  markets.  Most  recently,  Mr.  Fein  served  as  Executive  Vice  President, 
Worldwide Sales from December 2014 until PMC-Sierra, Inc. was acquired by Microsemi Corporation in January 2016. 
From November 2008 to November 2014, Mr. Fein served as Vice President, Sales for the Americas at PMC-Sierra. 

Bjoern Klaas. Mr. Klaas has led our company’s business in Europe, Middle East and Africa as the Vice President 
and Managing Director since December 2017. Prior to joining Proto Labs, Mr. Klaas held key positions with global polymer 
supplier PolyOne from 2012 to 2017, most recently as its Vice President and General Manager for its ColorMatrix Group 
headquartered in the United States. From 2008 to 2012, Mr. Klaas worked at Colorant-Chromatics, a global leader for high 
temperature polymer formulations, as the General Manager for the global business. 

Item 1A. Risk Factors 

The following are the significant factors that could materially adversely affect our business, financial condition, or 

operating results, as well as adversely affect the value of an investment in our common stock. 

Risks Relating to Our Business 

We face significant competition and expect to face increasing competition in many aspects of our business, which could 
cause our operating results to suffer. 

The market for custom parts manufacturing is fragmented and highly competitive. We compete for customers with 
a wide variety of custom parts manufacturers and methods. Some of our current and potential competitors include captive in-
house  product  lines,  other  custom  parts  manufacturers  and  alternative  manufacturing  vendors  such  as  those  utilizing  3D 
printing  processes  including  stereolithography  (SL),  selective  laser  sintering  (SLS),  direct  metal  laser  sintering  (DMLS), 
PolyJet and Multi Jet Fusion (MJF). Moreover, some of our existing and potential competitors are researching, designing, 
developing and marketing other types of products and product lines. We also expect that future competition may arise from 
the development of allied or related techniques for custom parts manufacturing that are not encompassed by our patents, from 
the issuance of patents to other companies that may inhibit our ability to develop certain products and from improvements to 
existing technologies. Furthermore, our competitors may attempt to adopt and improve upon key aspects of our business 
model, such as development of technology that automates much of the manual labor conventionally required to quote and 
manufacture custom parts, implementation of interactive web-based and automated user interface and quoting systems and/or 
building  scalable  operating  models  specifically  designed  for  efficient  custom  production.  Third-party  CAD  software 
companies may develop software that mold-makers, injection molders and CNC machine shops could use to compete with 
our  business  model.  Additive  manufacturers  may  develop  stronger,  higher  temperature  resins  or  introduce  other 
improvements that could more effectively compete with us on part quality. We may also, from time to time, establish alliances 

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or relationships with other competitors or potential competitors. To the extent companies terminate such relationships and 
establish alliances and relationships with our competitors, our business could be harmed. 

Existing  and  potential  competitors  may  have  substantially  greater  financial,  technical,  marketing  and  sales, 
manufacturing,  distribution  and  other  resources  and  name  recognition  than  us,  as  well  as  experience  and  expertise  in 
intellectual property rights and operating within certain international locations, any of which may enable them to compete 
effectively against us. 

Though  we  plan  to  continue  to  expend  resources  to  develop  new  technologies,  processes  and  product  lines,  we 
cannot assure you that we will be able to maintain our current position or continue to compete successfully against current 
and future sources of competition. Our challenge in developing new products is finding product lines for which our automated 
quotation and manufacturing processes offer an attractive value proposition, and we may not be able to find any new product 
lines with potential economies of scale similar to our existing product lines. If we do not keep pace with technological change 
and introduce new technologies, processes and product lines, the demand for our products and product lines may decline and 
our operating results may suffer. 

Our success depends on our ability to deliver products and product lines that meet the needs of product developers and 
engineers and to effectively respond to changes in our industry. 

We derive almost all of our revenue from the manufacture and sale to product developers and engineers of quick-
turn low volumes of custom parts for prototyping, support of internal manufacturing and limited quantity product release. 
Our  business  has  been,  and,  we  believe,  will  continue  to  be,  affected  by  changes  in  product  developer  and  engineering 
requirements and preferences, rapid technological change, new product and product line introductions and the emergence of 
new  standards  and  practices,  any  of  which  could  render  our  technology,  products  and  product  lines  less  attractive, 
uneconomical or obsolete. To the extent that our customers’ need for quick-turn parts decreases significantly for any reason, 
it would likely have a material adverse effect on our business and operating results and harm our competitive position. In 
addition, CAD simulation and other technologies may reduce the demand for physical prototype parts. Therefore, we believe 
that to remain competitive, we must continually expend resources to enhance and improve our technology, product offerings 
and product lines. 

In particular, we plan to increase our research and development efforts and to continue to focus a significant portion 
of those efforts to further develop our technology in areas such as our interactive user interface and manufacturing processes, 
potentially introduce new manufacturing processes within the research and development initiative we refer to as Protoworks, 
and broaden the range of parts that we are able to manufacture. We believe successful execution of this part of our business 
plan is critical for our ability to compete in our industry and grow our business, and there are no guarantees we will be able 
to do so in a timely fashion, or at all. Broadening the range of parts we offer is of particular importance since limitations in 
manufacturability are the primary reason we are not able to fulfill many quotation requests. There are no guarantees that the 
resources devoted to executing on this aspect of our business plan will improve our business and operating results or result 
in increased demand for our products and product lines. Failures in this area could adversely impact our operating results and 
harm our reputation and brand. Even if we are successful in executing in these areas, our industry is subject to rapid and 
significant technological change, and our competitors may develop new technologies, processes and product lines that are 
superior to ours. Our research and development costs were approximately $23.6 million, $22.4 million and $18.4 million for 
the years ended December 31, 2017, 2016 and 2015, respectively, and there is no guarantee that these costs will enable us to 
maintain or grow our revenue profitability. Refer to Item 7. “Management’s Discussion and Analysis of Financial Condition 
and Results of Operations” in this Annual Report on Form 10-K for additional discussion related to research and development 
costs. 

Any failure to properly meet the needs of product developers and engineers or respond to changes in our industry 
on a cost-effective and timely basis, or at all, would likely have a material adverse effect on our business and operating results 
and harm our competitive position. 

Our failure to meet our product developers’ and engineers’ expectations regarding quick turnaround time would adversely 
affect our business and results of operations. 

We believe many product developers and engineers are facing increased pressure from global competitors to be first 
to market with their finished products, often resulting in a need for quick turnaround of custom parts. We believe our ability 
to  quickly  quote,  manufacture  and  ship  custom  parts  has  been  an  important  factor  in  our  results  to  date.  There  are  no 
guarantees we will be able to meet product developers’ and engineers’ increasing expectations regarding quick turnaround 
time,  especially  as  we  increase  the  scope  of  our  operations.  If  we  fail  to  meet  our  customers’  expectations  regarding 
turnaround time in any given period, our business and results of operations will likely suffer. 

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Our failure to meet our product developers’ and engineers’ price expectations would adversely affect our business and 
results of operations. 

Demand for our product lines is sensitive to price. We believe our competitive pricing has been an important factor 
in our results to date. Therefore, changes in our pricing strategies can have a significant impact on our business and ability to 
generate revenue. Many factors, including our production and personnel costs and our competitors’ pricing and marketing 
strategies, can significantly impact our pricing strategies. If we fail to meet our customers’ price expectations in any given 
period, demand for our products and product lines could be negatively impacted and our business and results of operations 
could suffer. 

Our failure to meet our product developers’ and engineers’ quality specifications would adversely affect our business and 
results of operations. 

We  believe  many  product  developers  and  engineers  have  a  need  for  specific  quality  of  quick-turn,  on-demand 
custom parts. We believe our ability to create parts with the specifications of the product developers and engineers is an 
important factor in our results to date. If we fail to meet our customers’ specifications in any given period, demand for our 
products and product lines could be negatively impacted and our business and results of operations could suffer. 

The strength of our brand is important to our business, and any failure to maintain and enhance our brand would hurt 
our ability to retain and expand our customer base as well as further penetrate existing customers. 

Since our products and product lines are sold primarily through our websites, the success of our business depends 
upon our ability to attract new and repeat customers to our websites in order to increase business and grow our revenue. 
Customer awareness and the perceived value of our brand will depend largely on the success of our marketing efforts, as well 
as our ability to consistently provide quality custom parts within the required timeframes and positive customer experiences, 
which  we  may  not  do  successfully.  A  primary  component  of  our  business  strategy  is  the  continued  promotion  and 
strengthening of our brand, and we have incurred and plan to continue to incur substantial expense related to advertising and 
other marketing efforts directed toward enhancing our brand. We have initiated marketing efforts through social media, but 
this method of marketing may not be successful and subjects us to a greater risk of inconsistent messaging and bad publicity. 
We may choose to increase our branding expense materially, but we cannot be sure that this investment will be profitable. If 
we are unable to successfully maintain and enhance our brand, this could have a negative impact on our business and ability 
to generate revenue. 

Our business depends in part on our ability to process a large volume of new part designs from a diverse group of product 
developers and engineers and successfully identify significant opportunities for our business based on those submissions. 

We believe the volume of new part designs we process and the size and diversity of our customer base give us 
valuable  insight  into  the needs of our  prospective  customers. We utilize  this  industry knowledge  to determine  where  we 
should  focus  our  development  resources.  If  the  number  of  new  part  designs  we  process  or  the  size  and  diversity  of  our 
customer base decrease, our ability to successfully identify significant opportunities for our business and meet the needs of 
product developers and engineers could be negatively impacted. In addition, even if we do continue to process a large number 
of  new  part  designs  and  work  with  a  significant  and  diverse  customer  base,  there  are  no  guarantees  that  any  industry 
knowledge  we  extract  from  those  interactions  will  be  successfully  utilized  to  help  us  identify  significant  business 
opportunities or better understand the needs of product developers and engineers. 

The loss of one or more key members of our management team or personnel, or our failure to attract, integrate and retain 
additional personnel in the future, could harm our business and negatively affect our ability to successfully grow our 
business. 

We are highly dependent upon the continued service and performance of the key members of our management team 
and other personnel. The loss of any of these individuals, each of whom is “at will” and may terminate his or her employment 
relationship  with  us  at  any  time,  could  disrupt  our  operations  and  significantly  delay  or  prevent  the  achievement  of  our 
business objectives. We believe that our future success will also depend in part on our continued ability to identify, hire, train 
and motivate qualified personnel. A possible shortage of qualified individuals in the regions where we operate might require 
us  to pay  increased  compensation  to  attract  and retain key  employees,  thereby  increasing our  costs. In  addition, we  face 
intense competition for qualified individuals from numerous companies, many of whom have substantially greater financial 
and other resources and name recognition than us. We may be unable to attract and retain suitably qualified individuals who 
are capable of meeting our growing operational, managerial and other requirements, or we may be required to pay increased 
compensation in order to do so. Our failure to attract, hire, integrate and retain qualified personnel could impair our ability 
to achieve our business objectives. 

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If we fail to grow our business as anticipated, our net sales, gross margin and operating margin will be adversely affected. 

We are attempting to grow our business substantially. To this end, we have made and expect to continue to make 
significant  investments  in  our  business,  including  investments  in  our  infrastructure,  technology,  and  marketing  and  sales 
efforts. These investments include dedicated facilities expansion and increased staffing, both domestic and international. If 
our business does not generate the level of revenue required to support our investment, our net sales and profitability will be 
adversely affected. 

If  we  are  unable  to  manage  our  growth  and  expand  our  operations  successfully,  our  reputation  and  brand  may  be 
damaged, and our business and results of operations may be harmed. 

Over the past several years, we have experienced rapid growth. For example, we have grown from 749 full-time 
employees as of January 1, 2014 to 2,266 full-time employees as of December 31, 2017. We have expanded internationally, 
including establishing manufacturing operations in Europe in 2005 and Japan in 2009. In 2014, we expanded our product 
lines with 3D Printing through our acquisition of FineLine. In 2015, we expanded our manufacturing operations and our 3D 
Printing product lines in Europe through our acquisition of Alphaform. In 2017, we expanded our product lines to include 
Sheet Metal through our acquisition of RAPID. We expect this growth to continue and the number of countries and facilities 
from which we operate to increase in the future. Our ability to effectively manage our anticipated growth and expansion of 
our operations will require us to do, among other things, the following: 

• 

• 

• 

• 

enhance  our  operational,  financial  and  management  controls  and  infrastructure,  human  resource  policies,  and
reporting systems and procedures, in particular as we continue to operate as a global organization; 

effectively  scale  our  operations,  including  accurately  predicting  the  need  for  floor  space,  equipment,  and 
additional staffing; 

successfully identify, recruit, hire, train, maintain, motivate and integrate additional employees; and 

expand our international resources. 

These  enhancements  and  improvements  will  require  significant  capital  expenditures  and  allocation  of  valuable 
management and employee resources. Furthermore, our growth, combined with the geographical dispersion of our operations, 
has  placed,  and  will  continue  to  place,  a  strain  on  our  operational,  financial  and  management  infrastructure.  Our  future 
financial performance and our ability to execute on our business plan will depend, in part, on our ability to effectively manage 
any future growth and expansion. There are no guarantees we will be able to do so in an efficient or timely manner, or at all. 
Our  failure  to effectively  manage growth  and  expansion could  have  a material  adverse  effect  on our business,  results  of 
operations,  financial  condition,  prospects,  and  reputation  and  brand,  including  impairing  our  ability  to  perform  to  our 
customers’ expectations. 

We may not timely and effectively scale and adapt our existing technology, processes and infrastructure to meet the needs 
of our business. 

A key element to our continued growth is the ability to quickly and efficiently quote an increasing number of product 
developer and engineer submissions across geographic regions and to manufacture the related parts. This will require us to 
timely and effectively scale and adapt our existing technology, processes and infrastructure to meet the needs of our business. 
With respect to our websites and quoting technology, it may become increasingly difficult to maintain and improve their 
performance,  especially  during  periods  of  heavy  usage  and  as  our  solutions  become  more  complex  and  our  user  traffic 
increases across geographic regions. Similarly, our manufacturing automation technology may not enable us to process the 
large numbers of unique designs and efficiently manufacture the related parts in a timely fashion to meet the needs of product 
developers and engineers as our business continues to grow. Any failure in our ability to timely and effectively scale and 
adapt our existing technology, processes and infrastructure could negatively impact our ability to retain existing customers 
and attract new customers, damage our reputation and brand, result in lost revenue, and otherwise substantially harm our 
business and results of operations. 

Numerous factors may cause us not to maintain the revenue growth that we have historically experienced. 

Although our revenue has grown over the past five years from $163.1 million for the year ended December 31, 2013 
to $344.5 million for the year ended December 31, 2017, we may not be able to maintain our historical rate of revenue growth. 

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We  believe  that  our  continued  revenue  growth  will  depend  on  many  factors,  a  number  of  which  are  out  of  our  control, 
including among others, our ability to: 

• 

• 

• 

• 

• 

• 

• 

• 

retain and further penetrate existing customer companies, as well as attract new customer companies; 

consistently execute on custom part orders in a manner that satisfies product developers’ and engineers’ needs 
and provides them with a superior experience; 

develop new technologies or manufacturing processes and broaden the range of parts we offer; 

successfully execute on our international strategy and expand into new geographic markets; 

capitalize  on  product  developer  and  engineer  expectations  for  access  to  comprehensive,  user-friendly  e-
commerce capabilities 24 hours per day, 7 days per week; 

increase the strength and awareness of our brand across geographic regions; 

respond to changes in product developer and engineer needs, technology and our industry; and 

react to challenges from existing and new competitors. 

We cannot assure you that we will be successful in addressing the factors above and continuing to grow our business 

and revenue. 

Our operating results and financial condition may fluctuate on a quarterly and annual basis. 

Our operating results and financial condition may fluctuate from quarter to quarter and year to year, and are likely 
to continue to vary due to a number of factors, some of which are outside of our control. In addition, our actual or projected 
operating results may fail to match our past performance. These events could in turn cause the market price of our common 
stock to fluctuate. If our operating results do not meet the expectations of securities analysts or investors, who may derive 
their expectations by extrapolating data from recent historical operating results, the market price of our common stock will 
likely decline. 

Our operating results and financial condition may fluctuate due to a number of factors, including those listed below 

and those identified throughout this “Risk Factors” section: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the development of new competitive systems or processes by others; 

the entry of new competitors into our market, whether by established companies or by new companies; 

changes in the size and complexity of our organization, including our international operations; 

levels of sales of our products and product lines to new and existing customers; 

the geographic distribution of our sales; 

changes in product developer and engineer preferences or needs; 

changes in the amount that we invest to develop, acquire or license new technologies and processes, which we
anticipate will generally increase and may fluctuate in the future; 

delays  between  our  expenditures  to  develop,  acquire  or  license  new  technologies  and  processes,  and  the
generation of sales related thereto; 

our ability to timely and effectively scale our business during periods of sequential quarterly or annual growth; 

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• 

• 

• 

• 

• 

• 

• 

• 

• 

limitations or delays in our ability to reduce our expenses during periods of declining sequential quarterly or
annual revenue; 

changes in our pricing policies or those of our competitors, including our responses to price competition; 

changes in the amount we spend in our marketing and other efforts; 

unexpected increases in expenses as compared to our related accounting accruals or operating plan; 

the volatile global economy; 

general economic and industry conditions that affect customer demand and product development trends; 

interruptions  to  or  other  problems  with  our  website  and  interactive  user  interface,  information  technology
systems, manufacturing processes or other operations; 

changes in accounting rules and tax and other laws; and 

plant shutdowns due to a health pandemic or weather conditions. 

Due to all of the foregoing factors and the other risks discussed in this “Risk Factors” section, you should not rely 

on quarter-to-quarter or year-to-year comparisons of our operating results as an indicator of future performance. 

Interruptions  to  or  other  problems  with  our  website  and  interactive  user  interface,  information  technology  systems, 
manufacturing processes or other operations could damage our reputation and brand and substantially harm our business 
and results of operations. 

The satisfactory performance, reliability, consistency, security and availability of our websites and interactive user 
interface, information technology systems, manufacturing processes and other operations are critical to our reputation and 
brand, and to our ability to effectively service product developers and engineers. Any interruptions or other problems that 
cause any of our websites, interactive user interface or information technology systems to malfunction or be unavailable, or 
negatively  impact  our  manufacturing  processes  or  other  operations,  may  damage  our  reputation  and  brand,  result  in  lost 
revenue, cause us to incur significant costs seeking to remedy the problem and otherwise substantially harm our business and 
results of operations. 

A  number  of  factors  or  events  could  cause  such  interruptions  or  problems,  including  among  others:  human  and 
software  errors,  design  faults,  challenges  associated  with  upgrades,  changes  or  new  facets  of  our  business,  power  loss, 
telecommunication failures, fire, flood, extreme weather, political instability, acts of terrorism, war, break-ins and security 
breaches, contract disputes, labor strikes and other workforce-related issues, capacity constraints due to an unusually large 
number of product developers and engineers accessing our websites or ordering parts at the same time, and other similar 
events.  These  risks  are  augmented  by  the  fact  that  our  customers  come  to  us  largely  for  our  quick-turn  manufacturing 
capabilities  and  that  accessibility  and  turnaround  speed  are  often  of  critical  importance  to  these  product  developers  and 
engineers. We are dependent upon our facilities through which we satisfy all of our production demands and in which we 
house all of the computer hardware necessary to operate our websites and systems as well as managerial, customer service, 
sales, marketing and other similar functions, and we have not identified alternatives to these facilities or established fully 
redundant  systems  in  multiple  locations.  However,  we  have  back-up  computing  systems  for  each  of  our  United  States, 
European  and  Japanese  operations.  In  addition,  we  are  dependent  in  part  on  third  parties  for  the  implementation  and 
maintenance of certain aspects of our communications and production systems, and therefore preventing, identifying and 
rectifying problems with these aspects of our systems is to a large extent outside of our control. 

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Moreover,  the  business  interruption  insurance  that  we  carry  may  not  be  sufficient  to  compensate  us  for  the 
potentially  significant  losses,  including  the  potential  harm  to  the  future  growth  of  our  business  that  may  result  from 
interruptions in our product lines as a result of system failures. 

We depend on the continued growth of product developers’ and engineers’ e-commerce expectations when working with 
their custom parts manufacturers and their migration from 2D to 3D CAD software. 

The business of selling custom parts over the Internet via an interactive web-based and automated user interface and 
quoting system is not widespread in our industry. Moreover, many product developers and engineers still utilize 2D CAD 
software.  Concerns  about  privacy  and  technological  and  other  problems  may  discourage  some  product  developers  and 
engineers  from  adopting  the  Internet  as  the  medium  for  procuring  their  custom  parts  or  adopting  3D  CAD  software, 
particularly in countries where e-commerce and 3D CAD software are not as prevalent as they are in our current markets or 
with product developers and engineers in industries not well suited to utilize our product lines, such as architecture. In order 
to expand our customer base, we must appeal to and procure customers who historically have used more traditional means of 
commerce and/or 2D CAD drawings to purchase their customer parts. If product developers and engineers are not sufficiently 
attracted to the value proposition of or satisfied with our web-based interface and quotation system, or product developers 
and engineers do not continue to migrate to 3D CAD software as we currently anticipate, our business could be adversely 
impacted. 

We  store  confidential  customer information  in  our  systems that,  if breached  or  otherwise  subjected  to  unauthorized 
access, may harm our reputation or brand or expose us to liability. 

Our  system  stores,  processes  and  transmits  our  customers’  confidential  information,  including  the  intellectual 
property in their part designs and other sensitive data. We rely on encryption, authentication and other technologies licensed 
from  third  parties,  as  well  as  administrative  and  physical  safeguards,  to  secure  such  confidential  information.  Any 
compromise  of  our  information  security  could  damage  our  reputation  and  brand  and  expose  us  to  a  risk  of  loss,  costly 
litigation and liability that would substantially harm our business and operating results. We may not have adequately assessed 
the internal and external risks posed to the security of our company’s systems and information and may not have implemented 
adequate preventative safeguards or take adequate reactionary measures in the event of a security incident. In addition, most 
states  have  enacted  laws  requiring  companies  to  notify  individuals  and  often  state  authorities  of  data  security  breaches 
involving their personal data. These mandatory disclosures regarding a security breach often lead to widespread negative 
publicity, which may cause our existing and prospective customers to lose confidence in the effectiveness of our data security 
measures. Any security breach, whether successful or not, would harm our reputation and brand and could cause the loss of 
customers. 

Global economic conditions may harm our ability to do business, increase our costs and negatively affect our stock price. 

The prospects for economic growth in the United States and other countries remain uncertain and could worsen. 
Economic  concerns  and  other  issues  such  as  reduced  access to  capital  for  businesses  may  cause  product  developers  and 
engineers  to  further  delay  or  reduce  the  product  development  projects  that  our  business  supports.  Given  the  continued 
uncertainty  concerning  the  global  economy,  we  face  risks  that  may  arise  from  financial  difficulties  experienced  by  our 
suppliers, product developers and engineers and other related risks to our business. 

Political and economic uncertainty arising from the outcome of the United Kingdom’s referendum on its membership in 
the European Union could adversely affect our business and results of operations. 

On June 23, 2016, the United Kingdom (UK) held a referendum in which voters approved a withdrawal from the 
European  Union  (EU),  commonly  referred  to  as  “Brexit.”  The  outcome  of  the  Brexit  vote  triggered  short-term  financial 
volatility, including a decline in the value of the British Pound in comparison to both the United States dollar and the Euro. 
The impact of the Brexit referendum and the ongoing uncertainty associated with the outcome thereof may result in various 
long-term financial consequences for businesses operating in the UK, the EU and beyond. As a result of the referendum, the 
British government is negotiating the terms of the UK’s relationship with the EU going forward, including the terms of trade 
between the UK and the EU. Although the specific terms and the timeframe of the negotiations are unknown, it is possible 
that these changes could adversely affect our business and results of operations.  

We operate a global business that exposes us to additional risks. 

We have established our operations in the United States, Europe and Japan and are seeking to further expand our 
international operations. As of December 31, 2017, we had sold products into approximately 60 countries. In addition to 
English, our website is available in British English, French, German, Italian, Japanese and Spanish. Our international revenue 

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accounted for approximately 24%, 25% and 27% of our total revenue in the years ended December 31, 2017, 2016 and 2015, 
respectively. The future growth and profitability of our international business is subject to a variety of risks and uncertainties. 
Many of the following factors have adversely affected our international operations and sales to customers located outside of 
the United States and may again in the future: 

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difficulties in staffing and managing foreign operations, particularly in new geographic locations; 

challenges  in  providing  solutions  across  a  significant  distance,  in  different  languages  and  among  different
cultures; 

rapid  changes  in  government,  economic  and  political  policies  and  conditions,  political  or  civil  unrest  or
instability, terrorism or epidemics, and other similar outbreaks or events; 

fluctuations in foreign currency exchange rates; 

differences in product developer and engineer preferences and means of procuring parts; 

compliance with and changes in foreign laws and regulations, as well as U.S. laws affecting the activities of
U.S.  companies  abroad,  including  those  associated  with  export  controls,  tariffs  and  embargoes,  other  trade
restrictions and antitrust and data privacy concerns; 

different, complex and changing laws governing intellectual property rights, sometimes affording companies
lesser protection in certain areas; 

differing levels of use of the Internet or 3D CAD software; 

seasonal reductions in business activity in certain parts of the world, particularly during the summer months in
Europe and holiday season; 

higher costs of doing business internationally; 

interruptions resulting from any events affecting raw material supply or manufacturing capabilities abroad; 

protectionist laws and business practices that favor local producers and service providers; 

taxation; 

energy costs; 

restrictions imposed by local labor practices and laws on our business and operations; 

workforce uncertainty in countries where labor unrest is more common than in the United States; 

transportation delays; and 

increased payment risk and higher levels of payment fraud. 

Our business depends on product developers’ and engineers’ demand for our product lines, the general economic 
health  of  current  and  prospective  customers,  and  companies’  desire  or  ability  to  make  investments  in  new  products.  A 
deterioration of global, regional or local political, economic or social conditions could affect potential customers in ways that 
reduce demand for our product lines, disrupt our manufacturing and sales plans and efforts or otherwise negatively impact 
our business. Acts of terrorism, wars, public health issues and increased energy costs could disrupt commerce in ways that 
could impair our ability to get products to our customers and increase our manufacturing and delivery costs. We have not 
undertaken hedging transactions to cover our foreign currency exposure, and changes in foreign currency exchange rates may 
negatively impact reported revenue and expenses. In addition, our sales are often made on unsecured credit terms, and a 
deterioration of political, economic or social conditions in a given country or region could reduce or eliminate our ability to 

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collect accounts receivable in that country or region. In any of these events, our results of operations could be materially and 
adversely affected. 

If  a  natural  or  man-made  disaster  strikes  any  of  our  manufacturing  facilities,  we  will  be  unable  to  manufacture  our 
products for a substantial amount of time and our sales will decline. 

We manufacture all of our products in 12 manufacturing facilities, located in Maple Plain, Minnesota; Rosemount, 
Minnesota; Plymouth, Minnesota; Cary, North Carolina; Nashua, New Hampshire (3 facilities); Telford, United Kingdom; 
Feldkirchen,  Germany;  Eschenlohe,  Germany;  Rusko,  Finland  and  Zama,  Kanagawa,  Japan.  These  facilities  and  the 
manufacturing equipment we use would be costly to replace and could require substantial lead time to repair or replace. Our 
facilities  may be harmed by natural or man-made disasters, including, without limitation, earthquakes, floods, tornadoes, 
fires, hurricanes, tsunamis and nuclear disasters.  

In the event any of our facilities are affected by a disaster, we may: 

be unable to meet the shipping deadlines of our customers; 

experience disruptions in our ability to process submissions and generate quotations, manufacture and ship parts,
provide marketing and sales support and customer service, and otherwise operate our business, any of which
could negatively impact our business; 

be forced to rely on third-party manufacturers; 

need to expend significant capital and other resources to address any damage caused by the disaster; and 

lose customers and be unable to regain those customers. 

• 

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Although we possess insurance for damage to our property and the disruption of our business from casualties, this 
insurance may not be sufficient to cover all of our potential losses and may not continue to be available to us on acceptable 
terms, or at all. 

If our present single or limited source suppliers become unavailable or inadequate, our customer relationships, results of 
operations and financial condition may be adversely affected. 

We  acquire  substantially  all  of  the  manufacturing  equipment  and  certain  of  our  materials  that  are  critical  to  the 
ongoing operation and future growth of our business from just a few third parties. We do not have long-term supply contracts 
with any of our suppliers and operate on a purchase-order basis. While most manufacturing equipment and materials for our 
products are available from multiple suppliers, certain of those items are only available from single or limited sources. Should 
any  of  our  present  single  or  limited  source  suppliers  for  manufacturing  equipment  or  materials  become  unavailable  or 
inadequate, or impose terms unacceptable to us such as increased pricing terms, we could be required to spend a significant 
amount  of  time  and  expense  to develop  alternate sources  of  supply,  and we  may  not be  successful  in doing  so on terms 
acceptable to us, or at all. Natural disasters, such as hurricanes, may affect our supply of materials, particularly resins, from 
time to time, and we may purchase larger amounts of certain materials in anticipation of future shortages or increases in 
pricing. In addition, if we were unable to find a suitable supplier for a particular type of manufacturing equipment or material, 
we could be required to modify our existing business processes and offerings to accommodate the situation. As a result, the 
loss  of  a  single  or  limited  source  supplier  could  adversely  affect  our  relationship  with  our  customers  and  our  results  of 
operations and financial condition. 

We may not be able to adequately protect or enforce our intellectual property rights, which could impair our competitive 
position. 

Our success and future revenue growth will depend, in part, on our ability to protect our intellectual property. We 
rely primarily on patents, licenses, trademarks and trade secrets, as well as non-disclosure agreements and other methods, to 
protect our proprietary technologies and processes globally. Despite our efforts to protect our proprietary technologies and 
processes, it is possible that competitors or other unauthorized third parties may obtain, copy, use or disclose our technologies 
and  processes.  We  cannot  assure  you  that  any  of  our  existing  or  future  patents  will  not  be  challenged,  invalidated  or 
circumvented. As such, any rights granted under these patents may not provide us with meaningful protection. We may not 
be able to obtain foreign patents corresponding to our United States patents. Even if foreign patents are granted, effective 
enforcement in foreign countries may not be available. If our patents and other intellectual property do not adequately protect 

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our  technology,  our  competitors  may  be  able  to offer  product  lines  similar  to  ours. Our  competitors may  also  be  able  to 
develop similar technology independently or design around our patents. Any of the foregoing events would lead to increased 
competition and lower revenue or gross margin, which would adversely affect our net income. 

We may be subject to infringement claims. 

We may be subject to intellectual property infringement claims from individuals, vendors and other companies who 
have  acquired  or  developed  patents  in  the  fields  of  injection  molding,  CNC  machining, 3D  printing,  sheet  metal  or  part 
production for purposes of developing competing products or for the sole purpose of asserting claims against us. Any claims 
that our products or processes infringe the intellectual property rights of others, regardless of the merit or resolution of such 
claims, could cause us to incur significant costs in responding to, defending and resolving such claims, and may prohibit or 
otherwise impair our ability to commercialize new or existing products. If we are unable to effectively defend our processes, 
our market share, sales and profitability could be adversely impacted. 

Our failure to expand our intellectual property portfolio could adversely affect the growth of our business and results of 
operations. 

Expansion of our intellectual property portfolio is one of the available methods of growing our revenue and our 
profits. This involves a complex and costly set of activities with uncertain outcomes. Our ability to obtain patents and other 
intellectual  property  can be  adversely  affected by  insufficient  inventiveness  of our  employees,  by  changes  in  intellectual 
property  laws,  treaties,  and  regulations,  and  by  judicial  and  administrative  interpretations  of  those  laws,  treaties  and 
regulations. Our ability to expand our intellectual property portfolio could also be adversely affected by the lack of valuable 
intellectual property for sale or license at affordable prices. There is no assurance that we will be able to obtain valuable 
intellectual property in the jurisdictions where we and our competitors operate or that we will be able to use or license that 
intellectual property. 

We may be subject to product liability claims, which could result in material expense, diversion of management time and 
attention and damage to our business and reputation and brand. 

The prototype parts we manufacture and the parts we manufacture in low volumes may contain undetected defects 
or errors that are not discovered until after the products have been installed and used by customers. This could result in claims 
from customers or others, damage to our business and reputation and brand, or significant costs to correct the defect or error. 

We  attempt  to  include  provisions  in  our  agreements  with  customers  that  are  designed  to  limit  our  exposure  to 
potential liability for damages arising from defects or errors in our products. However, it is possible that these limitations 
may not be effective as a result of unfavorable judicial decisions or laws enacted in the future. 

The sale and support of our products entails the risk of product liability claims. Any product liability claim brought 
against us, regardless of its merit, could result in material expense, diversion of management time and attention, damage to 
our business and reputation and brand, and cause us to fail to retain existing customers or to fail to attract new customers. 

Government regulation of the Internet and e-commerce is evolving, and unfavorable changes or failure by us to comply 
with these regulations could substantially harm our business and results of operations. 

We are subject to general business regulations and laws as well as regulations and laws specifically governing the 
Internet and e-commerce. Existing and future laws and regulations may impede the growth of the Internet or other online 
services. These regulations and laws may cover taxation, restrictions on imports and exports, customs, tariffs, user privacy, 
data  protection,  pricing,  content,  copyrights,  distribution,  electronic  contracts  and  other  communications,  consumer 
protection, the provision of online payment services, broadband residential Internet access and the characteristics and quality 
of products and product lines. It is not clear how existing laws governing issues such as property use and ownership, sales 
and other taxes, fraud, libel and personal privacy apply to the Internet and e-commerce, especially where these laws were 
adopted prior to the advent of the Internet and do not contemplate or address the unique issues raised by the Internet or e-
commerce. Those laws that do reference the Internet are being interpreted by the courts and their applicability and reach are 
therefore uncertain. The costs of compliance with these regulations may increase in the future as a result of changes in the 
regulations or the interpretation of them. Further, any failures on our part to comply with these regulations may subject us to 
significant  liabilities.  Those  current  and  future  laws  and  regulations  or  unfavorable  resolution  of  these  issues  may 
substantially harm our business and results of operations. 

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Changes in, or interpretation of, tax rules and regulations may impact our effective tax rate and future profitability. 

We are a multinational company based in the United States and subject to tax in multiple tax jurisdictions, both 
domestic  and  abroad.  Our  future  effective  tax  rates  could  be  adversely  affected  by  changes  in  statutory  tax  rates  or 
interpretation  of  tax  rules,  including  those  set  forth  in  the  Tax  Cuts  and  Jobs  Act enacted  in  2017, and  regulations  in 
jurisdictions in which we do business, changes in the amount of revenue or earnings in the countries with varying statutory 
tax rates, or by changes in the valuation of deferred tax assets and liabilities. 

In addition, we are subject to audits and examinations of previously filed income tax returns by the Internal Revenue 
Service, or IRS, and other domestic and foreign tax authorities. We regularly assess the potential impact of such examinations 
to determine the adequacy of our provision for income taxes and have reserved for potential adjustments that may result from 
the  current  examinations.  We  believe  such  estimates  to  be  reasonable;  however,  there  is  no  assurance  that  the  final 
determination of any examination will not have an adverse effect on our operating results and financial position. 

We may require additional capital to support business growth, and this capital might not be available on acceptable terms, 
if at all. 

We intend to continue to make investments to support our business growth and may require additional funds to 
respond to business challenges, including the need to complement our growth strategy, increase market share in our current 
markets  or  expand  into  other  markets,  or  broaden  our  technology,  intellectual  property  or  product  line  capabilities. 
Accordingly, we may need to engage in equity or debt financings to secure additional funds. If we raise additional funds 
through future issuances of equity or convertible debt securities, our existing shareholders could suffer significant dilution, 
and  any  new  equity  securities  we  issue  could  have  rights,  preferences  and  privileges  superior  to  those  of  holders  of  our 
common stock. Any debt financing we secure in the future could involve restrictive covenants relating to our capital raising 
activities and other financial and operational matters, which may make it more difficult for us to obtain additional capital and 
to pursue business opportunities, including potential acquisitions. We may not be able to obtain additional financing on terms 
favorable to us, if at all. If we are unable to obtain adequate financing or financing on terms satisfactory to us when we require 
it, our ability to continue to support our business growth and to respond to business challenges could be significantly impaired, 
and our business may be harmed. 

Any acquisition, strategic relationship, joint venture or investment could disrupt our business and harm our operating 
results and financial condition. 

Our business and our customer base have been built primarily through organic growth. However, from time to time, 
we may selectively pursue acquisitions, strategic relationships, joint ventures or investments that we believe may allow us to 
complement our growth strategy, increase market share in our current markets or expand into other markets, or broaden our 
technology, intellectual property or product line capabilities. For example, in April 2014, we acquired FineLine to enable us 
to offer our customers 3D printing manufacturing processes; in October 2015, we acquired Alphaform to enable us to expand 
our 3D printing capabilities in Europe, and in November 2017, we acquired RAPID to enable us to offer our customers Sheet 
Metal  processes.  We  cannot  forecast  the  number,  timing  or  size  of  any  future  acquisitions  or  other  similar  strategic 
transactions,  or  the  effect  that  any  such  transactions  might  have  on  our  operating  or  financial  results.  We  have  limited 
experience engaging in these types of transactions. Such transactions may be complex, time consuming and expensive, and 
may present numerous challenges and risks including: 

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an acquired company, asset or technology not furthering our business strategy as anticipated; 

difficulties entering and competing in new product or geographic markets and increased competition, including
price competition; 

integration challenges; 

challenges in working with strategic partners and resolving any related disagreements or disputes; 

high  valuation  for  a  company,  asset  or  technology,  or  changes  in  the  economic  or  market  conditions  or
assumptions underlying our decision to make an acquisition; 

significant problems or liabilities, including increased intellectual property and employment related litigation
exposure, associated with acquired businesses, assets or technologies; 

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acquisition of a significant amount of goodwill, which could result in future impairment charges that would 
reduce our earnings; and 

requirements  to  record  substantial  charges  and  amortization  expense  related  to  certain  purchased  intangible
assets, deferred stock compensation and other items, as well as other charges or expenses. 

Any one of these challenges or risks could impair our ability to realize any benefit from our acquisitions, strategic 
relationships, joint ventures or investments after we have expended resources on them, as well as divert our management’s 
attention. Any failure to successfully address these challenges or risks could disrupt our business and harm our operating 
results and financial condition. Moreover, any such transaction may not be viewed favorably by investors or stakeholders. 

In  addition,  from  time  to  time  we  may  enter  into  negotiations  for  acquisitions,  relationships,  joint  ventures  or 
investments that are not ultimately consummated. These negotiations could result in significant diversion of management 
time, as well as substantial out-of-pocket costs. 

We depend in part on licenses of technologies from third parties in order to deliver our solutions, and, as a result, our 
business is dependent in part on the availability of such licenses on commercially reasonable terms. 

We  currently,  and  will  continue  to,  license  certain  technologies  from  third  parties.  While  these  licenses  are  not 
material to our financial results, their function in our business is integral to our operations. We cannot be certain that these 
third-party content licenses will be available to us on commercially reasonable terms or that we will be able to successfully 
integrate  the  technology  into  our  solutions.  These  third-party  licenses  may  expose  us  to  increased  risk,  including  risks 
associated with the assimilation of new technology sufficient to offset associated acquisition and maintenance costs. The 
inability to obtain any of these licenses could result in delays in solution development until equivalent technology can be 
identified and integrated. Any such delays in services could cause our business, operating results and financial condition to 
suffer. 

Our business involves the use of hazardous materials, and we and our suppliers must comply with environmental laws 
and regulations, which can be expensive and restrict how we do business. 

Our business involves the controlled storage, use and disposal of hazardous materials. We and our suppliers are 
subject to federal, state and local as well as foreign laws and regulations governing the use, manufacture, storage, handling 
and disposal of these hazardous materials. Although we believe that the safety procedures utilized by us and our suppliers for 
handling and disposing of these materials comply with the standards prescribed by these laws and regulations, we cannot 
eliminate the risk of accidental contamination or injury from these materials. In the event of an accident, state, federal or 
foreign authorities may curtail the use of these materials and interrupt our business operations. We do not currently maintain 
hazardous  materials  insurance  coverage.  If  we  are  subject  to  any  liability  as  a  result  of  activities  involving  hazardous 
materials, our business and financial condition may be adversely affected and our reputation and brand may be harmed. 

If we are unable to meet regulatory quality standards applicable to our manufacturing and quality processes for the parts 
we manufacture, our business, financial condition or operating results could be harmed. 

As a manufacturer of CNC-machined and injection-molded custom parts, we are required to meet certain regulatory 
standards, including International Organization for Standardization, or ISO, 9001:2008 for our manufacturing facilities in 
Minnesota. In North Carolina, we are required to meet ISO 9001:2008 standards for our plastics manufacturing and AS9100 
standards for our metals manufacturing. In New Hampshire, we are required to meet ISO 9001:2015 for our CNC-machined 
and sheet metal fabrication, as well as AS9100C standards. We are also able to meet regulatory standards ISO 9001:2008 at 
our manufacturing facilities in Feldkirchen, Germany, Eschenlohe, Germany and Rusko, Finland. We also meet regulatory 
standard ISO 13485 at our manufacturing facility in Eschenlohe, Germany. We are also able to meet regulatory standards 
ISO  9001  and  ISO  14001  in  Japan.  If  any  regulatory  inspection  reveals  that  we  are  not  in  compliance  with  applicable 
standards, regulators may take action against us, including issuing a warning letter, imposing fines on us, requiring a recall 
of the parts we manufactured or closing our manufacturing facilities. If any of these actions were to occur, it could harm our 
reputation as well as our business, financial condition and operating results. In addition, we may need to obtain additional 
certifications  in  the  future  and  there  are no guarantees  we  would be  able  to do so  on a  timely  basis,  if  at  all.  Moreover, 
obtaining and maintaining required regulatory certifications can be costly and divert management’s attention. 

We are subject to payment-related risks. 

We accept payments using a variety of methods, including credit card, customer invoicing, physical bank check and 
payment upon delivery. As we offer new payment options to our customers, we may be subject to additional regulations, 

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compliance requirements and fraud risk. For certain payment methods, including credit and debit cards, we pay interchange 
and other fees, which may increase over time and raise our operating costs and lower profitability. We rely on third parties 
to provide payment processing services, including the processing of credit cards, debit cards or electronic checks, and it could 
disrupt our business if these companies become unwilling or unable to provide these services to us. We are also subject to 
payment card association operating rules, certification requirements and rules governing electronic funds transfers, which 
could change or be reinterpreted to make it difficult or impossible for us to comply. If we fail to comply with these rules or 
requirements, we  may  be  subject  to  fines and  higher  transaction  fees  and  lose our  ability  to  accept credit  and debit  card 
payments from our customers, process electronic funds transfers, or facilitate other types of online payments, and our business 
and operating results could be adversely affected. 

Risks Relating to Ownership of Our Common Stock 

Our stock price has been and may continue to be volatile. 

In the year ended December 31, 2017, our common stock traded as high as $109.10 and as low as $48.00. The 
market for our common stock may become less active, liquid or orderly, which could depress the trading price of our common 
stock. Some of the factors, many of which are outside of our control, that may cause the market price of our common stock 
to fluctuate include: 

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fluctuations in our financial condition and operating results; 

our ability to retain and attract customers and increase net sales; 

pricing pressures due to competition or otherwise and changes in gross margins; 

changes in general economic and market conditions, economic uncertainty and changes in product development
activity levels; 

announcements by us or our competitors of technological innovations or new product or product lines offerings 
or significant acquisitions; 

timing, effectiveness, and costs of expansion and upgrades of our offerings, systems and infrastructure; 

changes in key personnel; 

success in entry into new markets and expansion efforts; 

the public’s response to press releases or other public announcements by us or third parties, including our filings
with the Securities and Exchange Commission and announcements relating to litigation; 

the  projections  we  may  provide  to  the  public,  any  changes  in  these  projections  or  our  failure  to  meet  these
projections; 

the issuance of new or updated research or reports by any securities or industry analysts who follow our common
stock, changes in analysts’ financial estimates or ratings, and failure of securities analysts to initiate or maintain
coverage of our common stock; 

changes in the market valuations of similar companies; 

significant lawsuits, including patent or shareholder litigation; 

changes in laws or regulations applicable to us; 

changes in accounting principles; 

the sustainability of an active trading market for our common stock; 

24 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• 

• 

• 

future  sales  of  our  common  stock  by  us  or  our  shareholders,  including  sales  by  our  officers,  directors  and
significant shareholders; 

share price and volume fluctuations attributable to inconsistent trading levels of our shares; and 

other events or factors, including those resulting from war, acts of terrorism, natural disasters or responses to
these events. 

In  addition,  the  stock  markets  have  experienced  extreme  price  and  volume  fluctuations  that  have  affected  and 
continue to affect the market prices of equity securities of many companies. In the past, shareholders have instituted securities 
class action litigation following periods of market volatility. If we were to become involved in securities litigation, we could 
incur substantial costs and our resources and the attention of management could be diverted from our business. 

If securities or industry analysts publish inaccurate or unfavorable research or reports about our business, our stock price 
and trading volume could decline. 

The trading market for our common stock depends, in part, on the research and reports that securities or industry 
analysts publish about us or our business. We do not have any control over these analysts. If one or more of the analysts who 
covers us downgrades our common stock, changes their opinion of our shares or publishes inaccurate or unfavorable research 
about our business, our stock price would likely decline. If one or more of these analysts ceases coverage of us or fails to 
publish reports on us regularly, demand for our common stock could decrease and we could lose visibility in the financial 
markets, which could cause our stock price and trading volume to decline. 

Our  failure  to  maintain  proper  and  effective  internal  controls  over  financial  reporting  and  otherwise  comply  with 
Section 404 of the Sarbanes-Oxley Act or prevent or detect misstatements in our financial statements in the future could 
harm our business and cause a decrease in our stock price. 

Ensuring  that  we  have  internal  financial  and  accounting  controls  and  procedures  adequate  to  produce  accurate 
financial statements on a timely basis is a costly and time-consuming effort that needs to be re-evaluated frequently. The 
Sarbanes-Oxley Act requires, among other things, that we maintain effective internal control over financial reporting and 
disclosure controls and procedures. In particular, we are required to perform annual system and process evaluation and testing 
of our internal control over financial reporting to allow management and our independent registered public accounting firm 
to report on the effectiveness of our internal control over financial reporting, as required by Section 404 of the Sarbanes-
Oxley Act. If we are not able to comply with the requirements of Section 404 in the future, or if we fail to prevent or detect 
misstatements in the financial statements we include in our reports filed with the SEC, our business could be harmed and the 
market price of our common stock could decline. 

Anti-takeover provisions in our charter documents and Minnesota law might discourage or delay acquisition attempts for 
us that you might consider favorable. 

Our  Third  Amended  and  Restated  Articles  of  Incorporation,  as  amended,  and  Amended  and  Restated  By-Laws 
contain provisions that may make the acquisition of our company more difficult without the approval of our board of directors. 
These provisions: 

• 

• 

• 

• 

permit our board of directors to issue up to 10,000,000 shares of preferred stock, with any rights, preferences
and privileges as our board may designate, including the right to approve an acquisition or other change in our
control; 

provide that the authorized number of directors may be changed by resolution of the board of directors; 

provide that all vacancies, including newly created directorships, may, except as otherwise required by law, be
filled by the affirmative vote of a majority of directors then in office, even if less than a quorum; 

provide  that  shareholders  seeking  to  present  proposals  before  a  meeting  of  shareholders  or  to  nominate
candidates  for  election  as  directors  at  a  meeting  of  shareholders  must  provide  notice  in  writing  in  a  timely
manner, and also specify requirements as to the form and content of a shareholder’s notice; and 

• 

do not provide for cumulative voting rights. 

25 

 
  
 
  
  
  
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
We  are  subject  to  the  provisions  of  Section 302A.673  of  the  Minnesota  Statutes,  which  regulates  business 
combinations. Section 302A.673 generally prohibits any business combination by an issuing public corporation, or any of its 
subsidiaries, with an interested shareholder, which means any shareholder that purchases 10% or more of the corporation’s 
voting  shares  within  four  years  following  the  date  the  person  became  an  interested  shareholder,  unless  the  business 
combination is approved by a committee composed solely of one or more disinterested members of the corporation’s board 
of directors before the date the person became an interested shareholder. 

These anti-takeover provisions could discourage, delay or prevent a transaction involving a change in control of our 
company, even if doing so would benefit our shareholders. These provisions could also discourage proxy contests and make 
it more difficult for you and other shareholders to elect directors of your choosing and to cause us to take other corporate 
actions you desire. 

We do not expect to pay any cash dividends for the foreseeable future. 

We have never declared or paid any cash dividends on our common stock, and we do not anticipate that we will pay 
any such cash dividends for the foreseeable future. We anticipate that we will retain all of our future earnings for use in the 
business and for general corporate purposes. Any determination to pay dividends in the future will be at the discretion of our 
board  of  directors  and  will  depend  upon  results  of  operations,  financial  condition,  contractual  restrictions,  restrictions 
imposed by applicable law and other factors our board of directors deems relevant. 

Item 1B. Unresolved Staff Comments 

None. 

Item 2. Properties 

We believe that our facilities are well maintained and of sufficient capacity to support our current operations. We 

have facilities in the following regions: 

United States 

Our corporate headquarters are located in Maple Plain, Minnesota in a facility we own encompassing approximately 
95,000  square  feet  of  office  space.  We  also  own  a  nearby  facility  encompassing  approximately  35,000  square  feet  of 
manufacturing space. We own a facility in Rosemount, Minnesota that encompasses approximately 130,000 square feet of 
manufacturing and office space. We also own a facility in Plymouth, Minnesota that encompasses approximately 170,000 
square feet of manufacturing and office space. 

We own a facility in Cary, North Carolina that encompasses approximately 77,000 square feet of manufacturing and 

office space.  

In November 2017, we purchased RAPID and assumed the leases of three facilities in Nashua, New Hampshire. 
The three facilities we lease total approximately 146,000 square feet of manufacturing and office space. The leases expire at 
various times from 2018 to 2022. 

Europe 

Our  European  operations  are  headquartered  in  Telford,  United  Kingdom  in  a  facility  we  own  encompassing 

approximately 126,000 square feet of office and manufacturing space. 

We also lease office space in the United Kingdom; Mosbach, Germany; Le Bourget du Lac, France; and Novara, 
Italy, for sales, customer service and technical support staff. The leases expire at various times from 2018 to 2023. In October 
2015, we purchased Alphaform, headquartered in Feldkirchen (Munich), Germany. As a result of the acquisition, we lease 
manufacturing and office facilities encompassing approximately 60,000 square feet in Feldkirchen, Germany, approximately 
22,000 square feet in Eschenlohe, Germany and approximately 24,000 square feet in Rusko, Finland. The leases expire at 
various times from 2018 to 2019. 

26 

 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
Japan 

Our Japan operations are headquartered in Zama, Kanagawa, Japan (southwest of Tokyo). In 2016, we moved into 
a new leased facility encompassing approximately 96,000 square feet of office and manufacturing space. The lease expires 
in April 2023. 

Item 3. Legal Proceedings 

From time to time, we are subject to various legal proceedings and claims that arise in the ordinary course of our 
business activities. Although the results of litigation and claims cannot be predicted with certainty, as of the date of this 
Annual Report on Form 10-K, we do not believe we are party to any litigation the outcome of which, if determined adversely 
to us, would individually or in the aggregate be reasonably expected to have a material adverse effect on our business. 

Item 4. Mine Safety Disclosures 

Not applicable. 

27 

 
  
 
  
  
  
 
 
PART II 

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

Our  common  stock  has  traded  on  the  New  York  Stock  Exchange  (NYSE)  under  the  symbol  “PRLB”  since 
February 24, 2012. Prior to that date, there was no public market for our common stock. The following table sets forth, for 
the periods indicated, the high and low intraday sales prices for our common stock as reported on the NYSE: 

Fiscal 2017 

Fiscal 2016 

High 

Low 

High 

Low 

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

60.25    $ 
70.10    $ 
80.40    $ 
109.10    $ 

48.00    $ 
48.70    $ 
66.85    $ 
79.06    $ 

79.65    $ 
82.06    $ 
61.62    $ 
59.65    $ 

51.61  
55.07  
50.50  
43.10  

On February 14, 2018, the last reported sale price of our common stock on the NYSE was $108.80 per share. As of 
February 14, 2018, we had 20 holders of record of our common stock. The actual number of shareholders is greater than this 
number of record holders, and includes shareholders who are beneficial owners, but whose shares are held in street name by 
brokers and other nominees. 

We have never declared or paid any cash dividends on our capital stock and we do not intend to pay cash dividends 
on our common stock for the foreseeable future. Any future determination related to our dividend policy will be made at the 
discretion of our board of directors and will depend on then-existing conditions, including our financial condition, operating 
results, contractual restrictions, capital requirements, business prospects and other factors our board of directors may deem 
relevant. 

Outstanding Equity Awards 

The following table summarizes, as of December 31, 2017, information about shares of our common stock that may 

be issued under equity compensation plans approved by shareholders and plans not approved by shareholders: 

Number of 
shares to  
be issued upon  
exercise of  
outstanding 
options and 
rights 

Weighted- 
average  
exercise price of  
outstanding 
options and 
rights 

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

Plan Category 

Equity compensation plans approved by shareholders(1) .....      
Equity compensation plans not approved by shareholders ..      

759,593 
None 

$51.13 
N/A 

6,515,301(2) 
None 

(1) 
(2) 

Includes the 2000 Stock Option Plan, the 2012 Long-Term Incentive Plan and our Employee Stock Purchase Plan.
Includes 1,244,007 shares remaining available for issuance as of December 31, 2017 under our Employee Stock
Purchase Plan. 

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Performance Graph 

The following graph shows a comparison from February 24, 2012 (the date our common stock commenced trading 
on the NYSE) through December 31, 2017 of the cumulative total return for our common stock, the S&P 500 Index and the 
Russell 2000 Index. We have selected the Russell 2000 Index because the Russell 2000 Index measures the performance of 
the small market capitalization segment of U.S. equity instruments and we are a member company included in the Russell 
2000 Index. Such returns are based on historical results and are not intended to suggest future performance. Data for the S&P 
500 Index and the Russell 2000 Index assume reinvestment of dividends. 

Period Ending 
Index 
  02/24/12     06/30/12     12/31/12     06/30/13     12/31/13     06/30/14     12/31/14     06/30/15     12/31/15     06/30/16     12/31/16     06/30/17     12/31/17   
Proto Labs, Inc. ..      100.00       115.04       157.68       259.88       284.72       327.68       268.64       269.92       254.76       230.24       205.40       269.00       412.00  
S&P 500 ..............      100.00       99.90       104.60       117.81       135.56       143.77       151.01       151.31       149.91       153.94       164.20       177.74       196.09  
Russell 2000 .......      100.00       96.29       102.43       117.88       140.33       143.86       145.28       151.22       136.98       138.91       163.66       170.68       185.17  

Unregistered Sales of Equity Securities and Issuer Purchases of Equity Securities 

On  February  9,  2017,  we  announced  that  our  board  of  directors  had  authorized  the  repurchase  of  shares  of  our 
common stock from time to time on the open market or in privately negotiated purchases, at an aggregate purchase price of 
up to $50 million. The timing and amount of any share repurchases will be determined by our management based on market 
conditions and other factors. The term of the program runs through December 31, 2021. 

During the three months ended December 31, 2017, we did not repurchase shares of our common stock. During the 
year  ended  December  31,  2017,  we  repurchased  77,806  shares  at  an  average price  of  $56.66  per  share  for  an  aggregate 
purchase price of $4.4 million. We have $45.6 million remaining under this authorization. 

Item 6. Selected Financial Data 

The following tables set forth selected consolidated financial data for the periods and at the dates indicated. The 
selected consolidated statements of comprehensive income data for the years ended December 31, 2017, 2016 and 2015 and 
selected  consolidated  balance  sheets  data  as  of  December 31,  2017  and  2016  are  derived  from  our  audited  consolidated 
financial statements included in Item 8. “Financial Statements and Supplementary Data” of this Annual Report on Form 10-
K. The selected consolidated statements of comprehensive income data for the years ended December 31, 2014 and 2013 and 
selected consolidated balance sheet data as of December 31, 2015, 2014 and 2013 are derived from our audited consolidated 
financial statements not included in this report. 

29 

 
  
  
 
  
  
  
  
  
  
  
 
  
   
 
 
The  historical  results  presented  below  are  not  necessarily  indicative  of  the  results  to  be  expected  for  any  future 
period. You should read this selected consolidated financial data in conjunction with Item 7. “Management’s Discussion and 
Analysis  of  Financial  Condition  and  Results  of  Operations,”  and  the  consolidated  financial  statements  and  related  notes 
appearing in Item 8. “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K.  

(in thousands, except share and per share 

amounts) 

Consolidated Statements of Comprehensive 

Income Data 

Revenue ..............................................................   $ 
Cost of revenue ..................................................     
Gross profit ........................................................     
Operating expenses: 

Marketing and sales ....................................     
Research and development ..........................     
General and administrative .........................     
Total operating expenses .........................     
Income from operations .....................................     
Other income, net ...............................................     
Income before income taxes ...............................     
Provision for income taxes .................................     
Net income .........................................................   $ 

Net income per share(1) 

Year Ended December 31, 

2017 

2016 

2015 

2014 

2013 

344,490    $ 
150,648      
193,842      

298,055    $ 
131,118      
166,937      

264,106    $ 
109,703      
154,403      

209,583    $ 
81,182      
128,401      

163,112  
61,410  
101,702  

56,856      
23,560      
41,200      
121,616      
72,226      
2,209      
74,435      
22,657      
51,778    $ 

46,131      
22,388      
36,651      
105,170      
61,767      
2,454      
64,221      
21,514      
42,707    $ 

39,188      
18,350      
29,716      
87,254      
67,149      
712      
67,861      
21,347      
46,514    $ 

29,144      
16,607      
22,122      
67,873      
60,528      
3      
60,531      
18,896      
41,635    $ 

22,386  
11,863  
16,154  
50,403  
51,299  
279  
51,578  
16,301  
35,277  

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

1.94    $ 
1.93    $ 

1.62    $ 
1.61    $ 

1.79    $ 
1.77    $ 

1.62    $ 
1.60    $ 

1.40  
1.36  

Weighted average shares outstanding(1) 

Basic ............................................................      26,647,610       26,365,173       26,005,858       25,692,699       25,198,556  
Diluted ........................................................      26,845,071       26,564,639       26,320,284       26,100,320       25,859,741  

Other comprehensive income (loss) (net of 

tax) 

Foreign currency translation adjustments ...........   $ 
Comprehensive income ......................................   $ 

5,519    $ 
57,297    $ 

(5,541)   $ 
37,166    $ 

(2,283)   $ 
44,231    $ 

(1,838)   $ 
39,797    $ 

(163) 
35,114  

(1)  See Note 3 of Notes to Consolidated Financial Statements for an explanation of the method used to calculate net
income per basic and diluted share and weighted average shares outstanding for the years ended December 31,
2017, 2016, and 2015, respectively. 

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Stock-based compensation expense included in the statements of comprehensive income data above is as follows: 

(in thousands) 

2017 

Year Ended December 31, 
2015 

2016 

2014 

2013 

Stock options and grants ......................................   $
Employee stock purchase plan .............................     
Total stock-based compensation expense .............   $

7,954    $ 
604      
8,558    $ 

6,177    $
598      
6,775    $

5,580    $
502      
6,082    $

4,386    $
423      
4,809    $

3,084  
377  
3,461  

Cost of revenue ....................................................   $
Operating expenses: 

Marketing and sales ......................................     
Research and development ............................     
General and administrative ...........................     
Total stock-based compensation expense .............   $

970    $ 

691    $

513    $

386    $

316  

1,429      
1,091      
5,068      
8,558    $ 

977      
1,396      
3,711      
6,775    $

1,074      
1,285      
3,210      
6,082    $

927      
1,048      
2,448      
4,809    $

610  
754  
1,781  
3,461  

(in thousands) 

2017 

Year Ended December 31, 
2015 

2016 

2014 

2013 

Consolidated Balance Sheets Data 
Cash and cash equivalents ....................................   $
Working capital ....................................................     
Total assets ...........................................................     
Total liabilities .....................................................     
Total shareholders' equity ....................................   $

68,795    $
36,707    $ 
134,357      
121,249      
414,241      
518,738      
57,523      
34,408      
461,215    $  379,833    $

47,653    $
111,740      
361,036      
33,391      
327,645    $

43,329    $
89,102      
287,031      
21,492      
265,539    $

43,039  
96,132  
230,175  
18,532  
211,643  

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

The  following  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  should  be  read  in 
conjunction with the consolidated financial statements and related notes included elsewhere in this Annual Report on Form 
10-K.  This  discussion  and  analysis  contains  forward-looking  statements  that  involve  risks  and  uncertainties.  Our  actual 
results  may  differ  materially  from  those  anticipated  in  these  forward-  looking  statements  as  a  result  of  various  factors, 
including those set forth under “Risk Factors” and elsewhere in this Annual Report on Form 10-K. 

Overview 

We are an e-commerce driven digital manufacturer of quick-turn, on-demand injection-molded, CNC-machined, 
3D-printed and sheet metal-fabricated custom parts for prototyping and short-run production. We provide custom parts to 
product developers and engineers worldwide, who are under increasing pressure to bring their finished products to market 
faster than their competition. We believe custom parts manufacturing has historically been an underserved market due to the 
inefficiencies  inherent  in  the  quotation,  equipment  set-up  and  non-recurring  engineering  processes  required  to  produce 
custom parts. Our proprietary technology eliminates most of the time-consuming and expensive skilled labor conventionally 
required to quote and manufacture parts in low volumes, and our customers conduct nearly all of their business with us over 
the Internet. We target our product lines to the millions of product developers and engineers who use 3D CAD software to 
design products across a diverse range of end markets. Our primary manufacturing product lines currently include Injection 
Molding, CNC Machining, 3D Printing and Sheet Metal. 

We have experienced significant growth since our inception. Since we first introduced our Injection Molding product 
line  in  1999, we  have  steadily  expanded  the  size  and geometric  complexity  of  the  injection-molded parts we  are  able  to 
manufacture, and we continue to extend the diversity of materials we are able to support. Similarly, since first introducing 
our CNC Machining product line in 2007, we have expanded the range of part sizes, design geometries and materials we can 
support.  In  2014,  we  acquired  FineLine  Prototyping,  Inc.  (FineLine)  to  expand  the  number  of  process  types  we  offer  to 
include stereolithography (SL), selective laser sintering (SLS) and direct metal laser sintering (DMLS). In 2017, we acquired 
RAPID to expand the number of process types we offer to include sheet metal fabrication and expand our CNC machining 
capability. We also continually seek to enhance other aspects of our technology and manufacturing processes, including our 
interactive  web-based  and  automated  user interface  and  quoting  system.  We  intend  to  continue  to  invest  significantly  to 
enhance  our  technology  and  manufacturing  processes  and  expand  the  range  of  our  existing  capabilities  with  the  aim  of 
meeting the needs of a broader set of customers. As a result of the factors described above, many of our customers tend to 
return to Proto Labs to meet their ongoing needs, with approximately 89%, 86% and 88% of our revenue in 2017, 2016 and 
2015, respectively, derived from existing customers. 

We have established our operations in the United States, Europe and Japan, which we believe are three of the largest 
geographic markets where product developers and engineers are located. We entered the European market in 2005, launched 
operations in Japan in late 2009 and further expanded into Europe through our acquisition of Alphaform in 2015 and the 
United States through our acquisition of RAPID in November 2017. As of December 31, 2017, we had sold products into 
approximately 60 countries. Our revenue outside of the United States accounted for approximately 24%, 25% and 27% of 
our consolidated revenue  in the  years  ended December 31,  2017, 2016 and 2015,  respectively. We  intend  to  continue  to 
expand our international sales efforts and believe opportunities exist to serve the needs of product developers and engineers 
in select new geographic regions. 

We have grown our total revenue from $163.1 million in 2013 to $344.5 million in 2017. During this period, our 
operating  expenses  increased  from  $50.4  million  in  2013  to  $121.6  million  in  2017.  We  have  grown  our  income  from 
operations from $51.3 million in 2013 to $72.2 million in 2017. Our recent growth in revenue and income from operations 
has  been  accompanied  by  increased  cost  of  revenues  and  operating  expenses.  We  expect  to  increase  investment  in  our 
operations to support anticipated future growth as discussed more fully below. 

In addition, we believe that a number of trends affecting our industry have affected our results of operations and 
may continue to do so. For example, we believe that many of our target product developer and engineer customers have 
increasing e-commerce expectations, are facing increased pressure to accelerate the time to market for their products and 
continue  to  migrate  from  using  2D  CAD  to  using  3D  CAD  for  their  design  needs.  We  believe  we  continue  to  be  well 
positioned to benefit from these trends, given our proprietary technology that enables us to automate and integrate the majority 
of activities involved in procuring custom parts, starting with our elegant web interface through which a product developer 
or engineer submits a 3D CAD part design. While our business may be positively affected by these trends, our results may 
also be favorably or unfavorably impacted by other trends that affect product developer and engineer orders for custom parts 
in low volumes, including, among others, changes in product developer and engineer preferences or needs, developments in 
our  industry  and  among  our  competitors,  and  factors  impacting  new  product  development  volume  such  as  economic 

32 

 
  
  
  
  
  
  
  
conditions. For a more complete discussion of the risks facing our business, see Part I, Item 1A. “Risk Factors” of this Annual 
Report on Form 10-K. 

Key Financial Measures and Trends 

Revenue 

Our  operations  are  comprised  of  three  geographic  operating  segments  in  the  United  States,  Europe  and  Japan. 
Revenue  is  derived  from  our  Injection  Molding,  CNC  Machining,  3D  Printing  and  Sheet  Metal  product  lines.  Injection 
Molding revenue consists of sales of custom injection molds and injection-molded parts. CNC Machining revenue consists 
of  sales of  CNC-machined  custom  parts. 3D  Printing  revenue  consists of  sales of 3D-printed parts. Sheet  Metal revenue 
consists of sales of fabricated sheet metal custom parts. Our revenue is generated from a diverse customer base, with no 
single  customer  company  representing  more  than  2%  of  our  total  revenue  in  2017.  Our  historical  and  current  efforts  to 
increase  revenue  have  been  directed  at  gaining  new  customers  and  selling  to  our  existing  customer  base  by  increasing 
marketing and selling activities, including: 

• 

• 

• 

• 

• 

the introduction of our 3D Printing product line through our acquisition of FineLine in 2014; 

expanding internationally through our acquisition of Alphaform in October 2015; 

the introduction of our Sheet Metal product line through our acquisition of RAPID in 2017; 

continuously improving the usability of our product lines such as our web-centric applications; and 

expanding the breadth and scope of our products by adding more sizes and materials to our offerings. 

During 2017, we served 37,267 unique product developers and engineers who purchased our products through our 
web-based customer interface, an increase of 18.5% over the same period in 2016. The information does not include 3D 
Printing, Injection Molding and Sheet Metal customers, principally related to our recent acquisitions, who do not utilize our 
web-based interface. 

During 2016, we served 31,457 unique product developers and engineers who purchased our products through our 
web-based customer interface, an increase of 15.5% over the same period in 2015. The information does not include 3D 
Printing  and  Injection  Molding  customers  resulting  from  the  Alphaform  acquisition  who  do  not  utilize  our  web-based 
interface. 

During 2015, we served 27,235 unique product developers and engineers who purchased our products through our 
web-based customer interface, an increase of 26.0% over the same period in 2014. The information does not include 3D 
Printing  and  Injection  Molding  customers  resulting  from  the  Alphaform  acquisition  who  do  not  utilize  our  web-based 
interface. 

Cost of Revenue, Gross Profit and Gross Margin 

Cost  of  revenue  consists  primarily  of  raw  materials,  equipment  depreciation,  employee  compensation,  benefits, 
stock-based compensation, facilities costs and overhead allocations associated with the manufacturing process for molds and 
custom parts. We expect cost of revenue to increase in absolute dollars, but remain relatively constant as a percentage of total 
revenue. 

Our business model requires that we invest in our capacity well in advance of demand to ensure we can fulfill the 
expectations for quick delivery of our products to our customers. Therefore, during each of 2017, 2016 and 2015 we made 
significant  investments  in  additional  factory  space,  equipment, and  infrastructure  in  the  United  States.  We  also  made 
significant investments in infrastructure in Europe in 2017 and significant investments in additional factory space in Japan in 
2016. We expect to continue to grow in future periods, which will result in the need for additional investments in factory 
space and equipment. We expect that these additional costs for factory and equipment expansion can be absorbed by revenue 
growth, and allow gross margins to remain relatively consistent over time. 

We define gross profit as our revenue less our cost of revenue, and we define gross margin as gross profit expressed 
as a percentage of revenue. Our gross profit and gross margin are affected by many factors, including our mix of revenue by 
product line, pricing, sales volume and manufacturing costs, the costs associated with increasing production capacity, the 
mix between domestic and foreign revenue sources and foreign exchange rates. 

33 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Operating Expenses 

Operating  expenses  consist  of  marketing  and  sales,  research  and  development  and  general  and  administrative 

expenses. Personnel-related costs are the most significant component in each of these categories. 

Our recent growth in operating expenses is mainly due to higher headcounts to support our growth and expansion, 
and we expect that trend to continue. Our business strategy is to continue to be a leading online and technology-enabled 
manufacturer of quick-turn, on-demand injection-molded, CNC-machined, CNC-turned, 3D-printed and sheet metal custom 
parts  for  prototyping  and  low-volume  production.  In  order  to  achieve  our  goals,  we  anticipate  continued  substantial 
investments in technology and personnel, resulting in increased operating expenses. 

Marketing  and  sales.  Marketing  and  sales  expense  consists  primarily  of  employee  compensation,  benefits, 
commissions, stock-based compensation, marketing programs such as electronic, print and pay-per-click advertising, trade 
shows and other related overhead. We expect sales and marketing expense to increase in the future as we increase the number 
of marketing and sales professionals and marketing programs targeted to increase our customer base and grow revenue. 

Research and development. Research and development expense consists primarily of personnel and outside service 
costs  related  to  the  development  of  new  processes  and  product  lines,  enhancement  of  existing  product  lines,  software 
developed for internal use, maintenance of internally developed software, quality assurance and testing. All of our internal 
research and development costs have been expensed as incurred. We expect research and development expense to increase 
in the future as we seek to enhance and expand our product line offerings and supporting business systems. 

General  and  administrative.  General  and  administrative  expense  consists  primarily  of  employee  compensation, 
benefits, stock-based compensation, professional service fees related to accounting, tax and legal and other related overhead. 
We  expect  general  and  administrative  expense  to  increase  in  the  future  as  we  continue  to  grow  and  expand  as  a  global 
organization. 

Other Income, Net 

Other  income,  net  primarily  consists  of  foreign  currency-related  gains  and  losses  and  interest  income  on  cash 
balances and investments. Our foreign currency-related gains and losses will vary depending upon movements in underlying 
exchange  rates.  Our  interest  income  will  vary  each  reporting  period  depending  on  our  average  cash  balances  during  the 
period, composition of our marketable security portfolio and the current level of interest rates. 

Provision for Income Taxes 

Provision  for  income  taxes  is  comprised  of  federal,  state,  local  and  foreign  taxes  based  on  pre-tax  income.  On 
December 22, 2017, the Tax Cuts and Jobs Act was signed into law in the United States. As a result, many provisions will 
affect our tax rate in future years. Some provisions, such as the reduction to the U.S. corporate tax rate from 35% to 21%, 
beginning in 2018, will likely reduce our effective tax rate in future years. Other provisions taken in isolation, such as the 
elimination of the Domestic Production Activities Deduction, will likely result in an increase to our tax rate. Overall, we 
anticipate our effective tax rate will be lower in 2018 and beyond than in recent periods based on the current tax laws. 

34 

 
  
  
  
  
  
  
  
  
  
 
 
Results of Operations 

The following table summarizes our results of operations and the related changes for the periods indicated. The 

results below are not necessarily indicative of the results for future periods. 

(dollars in thousands) 

2017 

2016 

Year Ended 
December 31, 

      Change 
$ 

     %       

Year Ended 
December 31, 

2016 

2015 

      Change 
$ 

     %    

Revenue ..........................................    $ 344,490      100.0%   $ 298,055      100.0%   $ 46,435       15.6%   $ 298,055      100.0%   $ 264,106       100.0%   $ 33,949       12.9% 
Cost of revenue ...............................       150,648       43.7        131,118       44.0        19,530       14.9        131,118       44.0        109,703        41.5        21,415       19.5  
Gross profit .....................................       193,842       56.3        166,937       56.0        26,905       16.1        166,937       56.0        154,403        58.5        12,534        8.1  
Operating expenses: 

Marketing and sales ...............       56,856       16.5        46,131       15.5        10,725       23.2        46,131       15.5        39,188        14.8        6,943       17.7  
Research and development ....       23,560       6.8        22,388       7.5        1,172       5.2        22,388       7.5        18,350        6.9        4,038       22.0  
General and administrative ...       41,200       12.0        36,651       12.3        4,549       12.4        36,651       12.3        29,716        11.3        6,935       23.3  

Total operating 

expenses ...................       121,616       35.3        105,170       35.3        16,446       15.6        105,170       35.3        87,254        33.0        17,916       20.5  
Income from operations .................       72,226       21.0        61,767       20.7        10,459       16.9        61,767       20.7        67,149        25.5        (5,382 )     (8.0) 
Other income, net ...........................      
*  
Income before income taxes ...........       74,435       21.6        64,221       21.5        10,214       15.9        64,221       21.5        67,861        25.7        (3,640 )     (5.4) 
Provision for income taxes .............       22,657       6.6        21,514       7.2        1,143       5.3        21,514       7.2        21,347        8.1       
167        0.8  
Net income ......................................    $ 51,778       15.0%   $ 42,707       14.3%   $  9,071       21.2%   $  42,707       14.3%   $ 46,514        17.6%   $ (3,807 )     (8.2)% 

712        0.2        1,742       

2,454       0.8       

2,454       0.8       

2,209       0.6       

(245)     (10.0)      

   * 

Percentage change not meaningful 

Stock-based compensation expense included in the statements of comprehensive income data above is as follows: 

(dollars in thousands) 

Stock options and grants ............................................................................    $ 
Employee stock purchase plan ...................................................................      
Total stock-based compensation expense ..................................................    $ 

Cost of revenue ...........................................................................................    $ 
Operating expenses: 

Marketing and sales ...........................................................................      
Research and development ................................................................      
General and administrative ...............................................................      
Total stock-based compensation expense ..................................................    $ 

2017 

Year Ended December 31, 
2016 

2015 

7,954       $ 
604         
8,558       $ 

970       $ 

1,429         
1,091         
5,068         
8,558       $ 

6,177       $ 
598         
6,775       $ 

691       $ 

977         
1,396         
3,711         
6,775       $ 

5,580   
502   
6,082   

513   

1,074   
1,285   
3,210   
6,082   

Comparison of Years Ended December 31, 2017 and 2016 

Revenue 

Revenue by reportable segment and the related changes for 2017 and 2016 is summarized as follows: 

(dollars in thousands) 

Revenue 

Year Ended December 31, 

2017 

$ 

% of Total 
Revenue 

2016 

$ 

% of Total 
Revenue 

Change 

$ 

% 

United States.................................    $ 
Europe...........................................      
Japan .............................................      
Total revenue .........................................    $ 

263,086      
70,154      
11,250      
344,490      

76.4%   $ 
20.4  
3.2  
100.0%   $ 

223,930      
63,365      
10,760      
298,055      

75.1%   $ 
21.3  
3.6  
100.0%   $ 

39,156      
6,789      
490      
46,435      

17.5% 
10.7  
4.6  
15.6% 

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Our revenue increased $46.4 million, or 15.6%, for 2017 compared with 2016. By reportable segment, revenue in 
the United States increased $39.2 million, or 17.5%, for 2017 compared with 2016. Revenue growth in the United States was 
partially attributable to the acquisition of RAPID in November 2017, which contributed $3.6 million in revenue. Excluding 
RAPID, revenue in the United States increased $35.6 million, or 15.9%, for 2017 compared with 2016. 

Revenue in Europe increased $6.8 million, or 10.7%, for 2017 compared with 2016. Revenue in Japan increased 

$0.5 million, or 4.6%, for 2017 compared with 2016. 

Our revenue growth in 2017 was the result of increased volume of the product developers and engineers we served. 
During 2017, we served 37,267 unique product developers and engineers, an increase of 18.5% over 2016. Average revenue 
per product developer or engineer remained relatively consistent during 2017 as compared to 2016.  

Our revenue  increases  were primarily  driven by  increases  in  sales personnel  and  marketing  activities.  Our  sales 
personnel focus on gaining new customer accounts and expanding the depth and breadth of existing customer accounts. Our 
marketing personnel focus on marketing activities that have proven to result in the greatest number of customer leads to 
support  sales  activity.  The  impact  on  international  revenue  in  2017  compared  to  2016  as  a  result  of  foreign  currency 
movements was not material. 

Revenue by product line and the related changes for 2017 and 2016 is summarized as follows: 

Year Ended December 31, 

2017 

2016 

Change 

$ 

% of Total 
Revenue       

$ 

% of Total 
Revenue       

$ 

     % 

(dollars in thousands) 

Revenue 

Injection Molding .................   $ 
CNC Machining ...................     
3D Printing ...........................     
Sheet Metal ..........................     
Other Product .......................     
Total revenue ...............................   $ 

194,432      
103,739      
43,329      
1,767      
1,223      
344,490      

56.4%   $ 
30.1       
12.6       
0.5       
0.4       
100.0%   $ 

175,974       
81,407       
37,847       
-       
2,827       
298,055       

59.0%   $ 
27.3       
12.7       
-       
1.0       
100.0%   $ 

18,458      
22,332      
5,482      
1,767      
(1,604)     
46,435      

10.5% 
27.4  
14.5  
100.0  
(56.7) 
15.6% 

By product line, our revenue growth was driven by a 10.5% increase in Injection Molding revenue, a 27.4% increase 
in CNC Machining revenue and a 14.5% increase in 3D Printing revenue, in each case for 2017 compared with 2016, which 
was partially offset by a $1.6 million decrease in Other Product revenue. As a result of our acquisition of RAPID in November 
2017, we experienced a $1.8 million increase in Sheet Metal revenue, a $1.7 million increase in CNC Machining revenue 
and a $0.2 million increase in Other Product revenue. 

Cost of Revenue, Gross Profit and Gross Margin 

Cost of Revenue. Cost of revenue increased $19.5 million, or 14.9%, for 2017 compared to 2016, which was slower 
than the rate of revenue increase of 15.6% for 2017 compared to 2016 reflecting the realization of productivity improvements. 
The increase in cost of revenue resulted from the growth of the business, including via the RAPID acquisition, and was due 
to raw material and production cost increases of $5.6 million to support increased sales volumes, an increase in direct labor 
headcount resulting in personnel and related cost increases of $12.7 million and equipment and facility-related cost increases 
of $1.2 million.  

Gross  Profit  and  Gross  Margin.  Gross  profit  increased  from  $166.9  million  in  2016  to  $193.8  million  in  2017 
primarily due to an increase in revenue growth. Gross margin increased from 56.0% of revenue in 2016 to 56.3% of revenue 
in 2017 primarily due to increases in revenue and realization of manufacturing productivity improvements. 

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Income from Operations 

Income from operations increased $10.5 million, or 16.9%, for 2017 compared with 2016. By reportable segment, 
income from operations for the United States and Europe increased 15.5% and 10.2%, respectively, as a percentage of revenue 
for 2017 compared with 2016. Income from operations for Corporate Unallocated and Japan decreased 11.6% as a percentage 
of revenue for 2017 compared with 2016.  

Operating Expenses 

Marketing and Sales. Marketing and sales expense increased $10.7 million, or 23.2%, for 2017 compared to 2016 
due to an increase in headcount resulting in personnel and related cost increases of $10.3 million and marketing program cost 
increases of $0.4 million. The increase in marketing program costs is the result of our focus on funding those programs that 
have proven to be the most effective in growing our business.  

Research  and  Development.  Our  research  and  development  expense  increased  $1.2  million,  or  5.2%,  for  2017 
compared to 2016 due to an increase in headcount resulting in personnel and related cost increases of $0.9 million and other 
operating cost increases of $0.3 million. 

General and Administrative. Our general and administrative expense increased $4.5 million, or 12.4%, for 2017 
compared  to  2016  due  to  an  increase  in  headcount  resulting  in  personnel  and  related  cost  increases  of  $4.0  million, 
professional service cost increases of $0.4 million primarily related to outside legal and accounting services, and stock-based 
compensation cost increases of $1.3 million, partially offset by a decrease in facility and administrative costs of $1.2 million 
resulting from $0.8 million of non-recurring costs related to facility moves and vacating leases in 2016. 

Other Income, Net and Provision for Income Taxes 

Other Income, Net. We recognized other income, net of $2.2 million in 2017, a decrease of $0.3 million compared 
to other income, net of $2.5 million for 2016. Other income, net decreased primarily due to a decrease of $1.1 million in 
foreign currency exchange gains, which were partially offset by a $0.4 million favorable legal settlement in the second quarter 
of 2017 and an increase of $0.5 million in interest income on investments. 

Provision for Income Taxes. Our income tax provision increased by $1.1 million for 2017 compared to 2016. This 
was the result of a significant increase to taxable income along with a tax provision for the transition tax that was part of the 
Tax Cuts and Jobs Act. Partially offsetting these tax increases was a tax benefit recorded to reflect the decrease to the valuation 
of our  deferred  tax  liabilities  caused  by  the  U.S.  corporate  income  tax  rate  reduction. As  a  result  of  this  decrease  to  the 
valuation of deferred tax liability, our effective tax rate decreased to 30.4% in 2017 from 33.4% in 2016. 

Comparison of Years Ended December 31, 2016 and 2015 

Revenue 

Revenue by reportable segment and the related changes for 2016 and 2015 is summarized as follows: 

(dollars in thousands) 

$ 

Revenue 

Year Ended December 31, 

2016 

2015 

Change 

% of Total 
Revenue       

$ 

% of Total 
Revenue       

$ 

     % 

United States ......................   $ 
Europe ................................     
Japan ..................................     
Total revenue .............................   $ 

223,930      
63,365      
10,760      
298,055      

75.1%  $
21.3       
3.6       
100.0%  $

208,018      
47,433      
8,655      
264,106      

78.7%  $
18.0       
3.3       
100.0%  $

15,912      
15,932      
2,105      
33,949      

7.6%
33.6  
24.3  
12.9%

Our revenue increased $34.0 million, or 12.9%, for 2016 compared with 2015. By reportable segment, revenue in 
the United States increased $15.9 million, or 7.6%, for 2016 compared with 2015. Revenue in Europe increased $15.9 million, 

37 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
       
  
      
  
  
  
  
       
  
      
  
  
  
  
     
     
  
  
    
    
  
  
      
        
         
        
         
        
  
      
        
         
        
         
        
  
  
    
       
        
       
        
       
   
  
or 33.6%,  for 2016  compared  with 2015, partially  driven by  the  acquisition of Alphaform  in  the  fourth  quarter  of  2015. 
Revenue in Japan increased $2.1 million, or 24.3%, for 2016 compared with 2015. 

Our revenue growth in 2016 was the result of increased volume of the product developers and engineers we served. 
During 2016, we served 31,457 unique product developers and engineers, an increase of 15.5% over 2015. Average revenue 
per product developer or engineer decreased 6% during 2016 as compared to 2015 due to changes in the mix of products 
purchased by our customers. 

Our revenue  increases  were primarily  driven by  increases  in  sales personnel  and  marketing  activities.  Our  sales 
personnel focus on gaining new customer accounts and expanding the depth and breadth into existing customer accounts. 
Our marketing personnel focus on marketing activities that have proven to result in the greatest number of customer leads to 
support  sales  activity.  International  revenue  decreased  by  $1.3  million  in  2016  compared  to  2015  as  a  result  of  foreign 
currency movements, primarily the strengthening of the United States dollar relative to the British pound. 

Revenue by product line and the related changes for 2016 and 2015 is summarized as follows: 

(dollars in thousands) 

$ 

Revenue 

Year Ended December 31, 

2016 

2015 

Change 

% of Total 
Revenue       

$ 

% of Total 
Revenue       

$ 

     % 

Injection Molding ...............   $ 
CNC Machining .................     
3D Printing .........................     
Other Product .....................     
Total revenue .............................   $ 

175,974      
81,407      
37,847      
2,827      
298,055      

59.0%  $
27.3       
12.7       
1.0       
100.0%  $

163,387      
74,368      
25,132      
1,219      
264,106      

61.8%  $
28.2       
9.5       
0.5       
100.0%  $

12,587      
7,039      
12,715      
1,608      
33,949      

7.7%
9.5  
50.6  
131.9  
12.9%

By product line, our revenue growth was driven by a 7.7% increase in Injection Molding revenue, a 9.5% increase 
in CNC Machining revenue and a 50.6% increase in 3D Printing revenue, in each case for 2016 compared with 2015, as well 
as a $1.6 million increase in Other Product revenue driven by our acquisition of Alphaform.  

During the second quarter of 2016, we made the decision to discontinue offering two manufacturing processes within 
our Injection Molding product line, Metal Injection Molding (MIM) and Magnesium Thixomolding (Thixo). In addition, in 
the second quarter of 2016, we decided to exit our non-core resin resale business, which was acquired from Alphaform in 
October 2015. Revenue from resin resale was included in Other Product revenue in 2015 and 2016. MIM, Thixo and resin 
resale in the aggregate represented approximately 1.6% of revenue during 2016. 

Cost of Revenue, Gross Profit and Gross Margin 

Cost of Revenue. Cost of revenue increased $21.4 million, or 19.5%, for 2016 compared to 2015, which was greater 
than the rate of revenue increase of 12.9% for 2016 compared to 2015. The increase in cost of revenue resulted from the 
growth of the business, including via the Alphaform acquisition. Additional increase in the cost of revenue was due to raw 
material  and  production  cost  increases  of  $5.9  million  to  support  increased  sales  volumes,  an  increase  in  direct  labor 
headcount resulting in personnel and related cost increases of $10.4 million and equipment and facility-related cost increases 
of $5.1 million. Equipment and facility-related cost increases included $0.6 million of accelerated depreciation of leasehold 
assets resulting from our move to new facilities in the U.S. and Japan in the third quarter of 2016. 

Gross  Profit  and  Gross  Margin.  Gross  profit  increased  from  $154.4  million  in  2015  to  $166.9  million  in  2016 
primarily due to increasing revenue growth as noted above. Gross margin decreased from 58.5% of revenue in 2015 to 56.0% 
of revenue in 2016 primarily as a result of our lower margins from the acquired Alphaform business, as well as increases in 
investments of additional manufacturing capacity, accelerated depreciation of leasehold assets resulting from our move to 
new facilities in the U.S. and Japan in the third quarter of 2016 and the impact of fluctuations in foreign currency exchange 
rates. 

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Income from Operations 

Income from operations decreased $5.4 million, or 8.0%, for 2016 compared with 2015. By reportable segment, 
income  from  operations  for  the  United  States  and  Corporate  Unallocated  and  Japan  increased  3.3% and  20.2%, 
respectively, as a percentage of revenue for 2016 compared with 2015. Income from operations for Europe decreased 12.4% 
as a percentage of revenue for 2016 compared with 2015. 

Operating Expenses 

Marketing and Sales. Marketing and sales expense increased $6.9 million, or 17.7%, for 2016 compared to 2015 
due to an increase in headcount resulting in personnel and related cost increases of $6.2 million and marketing program cost 
increases of $0.7 million. The increase in marketing program costs is the result of our focus on funding those programs which 
have proven to be the most effective in growing our business.  

Research  and  Development.  Our  research  and  development  expense  increased  $4.0  million,  or  22.0%,  for  2016 
compared to 2015 due to an increase in headcount resulting in personnel and related cost increases of $3.1 million, other 
operating cost increases of $0.8 million and professional services cost increases of $0.1 million. 

General and Administrative. Our general and administrative expense increased $6.9 million, or 23.3%, for 2016 
compared to 2015 due to an increase in headcount resulting in personnel and related cost increases of $2.2 million, facility 
and administrative cost increases of $3.6 million, professional service cost increases of $0.6 million for outside legal and 
accounting services and stock-based compensation cost increases of $0.5 million. The increase in administrative costs for 
2016 includes accelerated depreciation and facilities-related charges of $0.8 million resulting from our move to new facilities 
in the U.S. and Japan in the third quarter of 2016.  

Other Income, Net and Provision for Income Taxes 

Other Income, Net. We recognized other income, net of $2.5 million in 2016, an increase of $1.8 million compared 
to other income, net of $0.7 million for 2015. Other income, net included $1.4 million in foreign currency exchange gains 
for 2016 compared to $0.5 million in foreign currency exchange losses in 2015. The increase was primarily due to the amount 
of foreign-currency denominated cash balances abroad and movements in the underlying exchange rates at the end of the 
period. 

Provision for Income Taxes. Our income tax provision increased $0.2 million for 2016 compared to 2015 resulting 
in an effective tax rate increase to 33.4% in 2016 from 31.5% in 2015 due primarily to the mix of revenue earned in domestic 
and foreign tax jurisdictions and deductions for which we qualify in the current year. 

39 

 
 
  
  
  
  
  
  
  
 
 
Selected Quarterly Results of Operations Data 

The  following  tables  set  forth  selected  unaudited  quarterly  results  of  operations  data  for  2017  and  2016.  This 
unaudited quarterly information has been prepared on the same basis as our annual audited consolidated financial statements 
appearing elsewhere in this Annual Report on Form 10-K and includes all adjustments, consisting only of normal recurring 
adjustments,  that  we  consider  necessary  to  present  fairly  the  financial  information  for  the  fiscal  quarters  presented.  The 
quarterly data should be read in conjunction with our selected financial data and consolidated financial statements and the 
related notes appearing elsewhere in this Annual Report on Form 10-K. Operating results for any quarter are not necessarily 
indicative of results for a full-year period, and the historical results presented below are not necessarily indicative of the 
results to be expected in any future period. 

(in thousands, except share and per share 

amounts) 

Dec. 31,  
2017 

Sep. 30,  
2017 

Jun. 30,  
2017 

Three Months Ended 
Dec. 31,  
Mar. 31, 
2016 
2017 

(unaudited) 

Sep. 30,  
2016 

Jun. 30,  
2016 

Mar. 31,  
2016 

Revenue .........................................................   $
Cost of revenue ..............................................     
Gross profit ....................................................     
Operating expenses: 

Marketing and sales ..............................     
Research and development ...................     
General and administrative ..................     
Total operating expenses .................     
Income from operations ................................     
Other income, net ..........................................     
Income before income taxes ..........................     
Provision for income taxes ............................     
Net income .....................................................   $

94,178  $
41,290    
52,888    

15,393    
5,776    
12,944    
34,113    
18,775    
430    
19,205    
4,933    
14,272  $

88,105   $
38,793     
49,312     

13,846     
5,877     
10,222     
29,945     
19,367     
291     
19,658     
6,438     
13,220   $

82,040   $
35,671     
46,369     

14,630     
6,084     
9,253     
29,967     
16,402     
1,173     
17,575     
5,489     
12,086   $

80,167  $
34,894    
45,273    

12,987    
5,823    
8,781    
27,591    
17,682    
315    
17,997    
5,797    
12,200  $

72,353   $
32,041     
40,312     

11,949     
5,278     
8,254     
25,481     
14,831     
112     
14,943     
5,571     
9,372   $

78,173   $
33,448     
44,725     

11,787     
5,976     
10,020     
27,783     
16,942     
625     
17,567     
5,585     
11,982   $

74,961  $
32,715    
42,246    

11,453    
5,816    
10,126    
27,395    
14,851    
1,092    
15,943    
5,252    
10,691  $

72,568  
32,914  
39,654  

10,942  
5,318  
8,251  
24,511  
15,143  
625  
15,768  
5,106  
10,662  

Net income per share: 

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

0.53  $
0.53  $

0.50   $
0.49   $

0.46   $
0.45   $

0.46  $
0.46  $

0.35   $
0.35   $

0.45   $
0.45   $

0.41  $
0.40  $

0.41  
0.40  

Shares used to compute net income per 

share: 

Basic .....................................................     26,705,909    26,617,349     26,541,978     26,466,731    26,457,302     26,416,041     26,368,001    26,222,148  
Diluted ..................................................     27,009,017    26,802,034     26,649,152     26,599,200    26,609,929     26,609,878     26,561,148    26,442,357  

Liquidity and Capital Resources 

Cash Flows 

The following table summarizes our cash flows for the years ended December 31, 2017, 2016 and 2015: 

(dollars in thousands) 

2017 

Year Ended December 31, 
2016 

2015 

Net cash provided by operating activities ..............................   $ 
Net cash used in investing activities .......................................     
Net cash provided by financing activities ..............................     
Effect of exchange rates on cash and cash equivalents ..........     
Net increase (decrease) in cash and cash equivalents .............   $ 

81,748    $ 
(123,975)     
9,192      
947      
(32,088)   $ 

77,499     $ 
(60,755 )     
5,315       
(917 )     
21,142     $ 

64,096  
(63,594) 
4,699  
(877) 
4,324  

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Sources of Liquidity 

We  finance  our  operations  and  capital  expenditures  through  cash  flow  from  operations.  We  had  cash  and  cash 
equivalents of $36.7 million as of December 31, 2017, a decrease of $32.1 million from December 31, 2016. The decrease 
in our cash was due primarily to the acquisition of RAPID in November 2017. We had cash and cash equivalents of $68.8 
million as of December 31, 2016, an increase of $21.1 million from December 31, 2015. The increase in our cash was due 
primarily to cash generated through operations and, to a lesser extent, exercises of stock options and purchases through our 
employee stock purchase plan, which were partially offset by investing activity. We had cash and cash equivalents of $47.7 
million as of December 31, 2015, an increase of $4.3 million from December 31, 2014. The increase in our cash was due 
primarily to cash generated through operations and exercises of stock options, which were partially reduced by investment 
activity. 

As of December 31, 2017, the amount of cash and cash equivalents held by foreign subsidiaries was $18.4 million. 
The Tax Cuts and Jobs Act imposes a transition tax on foreign earnings previously treated as permanently reinvested, resulting 
in an increase to our U.S. tax liability. However, our intent is to continue to permanently reinvest these funds outside the U.S. 
and our current plans do not demonstrate a need to repatriate them to fund our domestic operations. We believe that our 
existing cash and cash equivalents together with cash generated from operations will be sufficient to meet our working capital 
expenditure requirements for at least the next 12 months. 

Cash Flows from Operating Activities 

Cash flow from operating activities of $81.8 million during 2017 primarily consisted of net income of $51.8 million, 
adjusted  for  certain  non-cash  items,  including  depreciation  and  amortization  of  $18.5  million,  stock-based  compensation 
expense of $8.6 million and changes in operating assets and liabilities and other items totaling $2.9 million. The cash flow 
from operating activities during 2017 compared to 2016 increased $4.2 million due to increases in net income of $9.0 million, 
increases in stock-based compensation expense of $1.8 million driven by an increased level of equity grants to employees 
and increases in depreciation and amortization of $1.0 million driven by an increase in capital investments. These increases 
were partially offset by decreases to deferred taxes of $1.6 million, amortization of held-to-maturity securities of $0.1 million 
and changes in operating assets and liabilities of $5.9 million. 

Cash flow from operating activities of $77.5 million during 2016 primarily consisted of net income of $42.7 million, 
adjusted  for  certain  non-cash  items,  including  depreciation  and  amortization  of  $17.5  million,  stock-based  compensation 
expense of $6.8 million, deferred taxes of $2.8 million, loss on impairment of assets of $0.5 million and amortization of held-
to-maturity securities of $1.2 million. The cash flow from operating activities during 2016 compared to 2015 increased $13.4 
million due to changes in operating assets and liabilities of $14.0 million, increases in depreciation and amortization of $3.4 
million driven by an increase in capital investments, stock-based compensation expense of $0.7 million driven by an increased 
level of equity grants to employees, loss on impairment of assets of $0.5 million driven by the decision to exit certain product 
lines, and a $0.3 million of gain from the Alphaform acquisition in 2015 that did not recur. These increases were partially 
offset by a decrease in net income of $3.8 million, a decrease in deferred taxes of $0.1 million, a decrease in amortization of 
held-to-maturity securities of $0.1 million, as well as other adjustments of $1.5 million primarily related to unrealized gains 
on the translation of foreign currency denominated cash. 

Cash flow from operating activities of $64.1 million during 2015 primarily consisted of net income of $46.5 million, 
adjusted for certain non-cash items, including depreciation and amortization of $14.1 million and stock-based compensation 
expense of $6.1 million. The cash flow from operating activities during 2015 compared to 2014 increased $2.4 million due 
to increases in net income of $4.9 million, depreciation and amortization of $3.0 million, deferred taxes of $4.7 million and 
stock-based compensation expense of $1.3 million, which were partially offset by a gain on acquisition of $0.3 million and 
decreases in amortization of held-to-maturity securities of $0.3 million and changes in operating assets and liabilities of $10.9 
million. 

Cash Flows from Investing Activities 

Cash used in investing activities was $123.9 million for the year ended December 31, 2017, consisting of $110.5 
million  for  the  purchase  of  RAPID,  $32.6  million  for  the  purchase  of  property  and  equipment  primarily  to  expand  our 
production capacity, $20.0 million for the purchase of marketable securities and $8.8 million for the purchases of other assets 
and investments, which were partially offset by $48.0 million in proceeds from maturities and call redemption of marketable 
securities.  

Cash  used  in  investing  activities  was  $60.8  million  for  the  year  ended  December  31,  2016,  consisting  of  $33.6 
million for the purchase of property and equipment primarily to expand our production capacity, and $89.3 million for the 

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purchase  of  marketable  securities,  which  were  partially  offset  by  $62.1  million  in  proceeds  from  maturities  and  call 
redemption of marketable securities. 

Cash  used  in  investing  activities  was  $63.6  million  for  the  year  ended  December  31,  2015,  consisting  of  $44.4 
million for the purchase of property and equipment primarily to expand our production capacity, $5.0 million for the payments 
on business acquisitions and $66.4 million for the purchase of marketable securities, which were partially offset by $52.2 
million in proceeds from maturities and call redemption of marketable securities. 

Cash Flows from Financing Activities 

Cash provided by financing activities was $9.2 million for the year ended December 31, 2017, consisting of $5.0 
million in short-term debt obligations and $8.6 million in proceeds from exercises of stock options, partially offset by $4.4 
million for repurchases of common stock. 

Cash provided by financing activities was $5.3 million for the year ended December 31, 2016, consisting of $5.7 
million  in  proceeds  from  exercises  of  stock  options,  partially  offset  by  $0.4  million  for  payments  of  acquisition-related 
contingent consideration. 

Cash provided by financing activities was $4.7 million for the year ended December 31, 2015, consisting of $6.3 
million in proceeds from exercises of stock options, partially offset by $0.2 million for payments of debt and $1.4 million for 
payments of acquisition-related contingent consideration. 

Operating and Capital Expenditure Requirements 

We believe, based on our current operating plan, that our cash balances and cash generated through operations and 
interest income will be sufficient to meet our anticipated cash requirements through at least the next 12 months. From time 
to time we may seek to sell equity or convertible debt securities or enter into credit facilities. The sale of equity and convertible 
debt securities may result in dilution to our shareholders. If we raise additional funds through the issuance of convertible debt 
securities or enter into credit facilities, these securities and debt holders could have rights senior to those of our common 
stock, and this debt could contain covenants that would restrict our operations. We may require additional capital beyond our 
currently forecasted amounts. Any such required additional capital may not be available on terms acceptable to us, or at all. 

Our future capital requirements will depend on many factors, including the following: 

the revenue growth in Injection Molding, CNC Machining, 3D Printing and Sheet Metal product lines; 

costs of operations, including costs relating to expansion and growth; 

the emergence of competing or complementary technological developments; 

the costs of filing, prosecuting, defending and enforcing any patent claims and other intellectual product rights, 
or participating in litigation-related activities; and 

the  acquisition  of  businesses,  products  and  technologies,  although  we  currently  have  no  commitments  or
agreements relating to any of these types of transactions. 

• 

• 

• 

• 

• 

Our annual capital expenditures generally have varied between approximately 8% and 19% of annual revenue. We 
believe  future  growth  capital  expenditures,  excluding  any  expenditures  for  buildings  and  maintenance  capital  we  might 
purchase for our operations, are likely to vary between approximately 8% and 12% of annual revenue. 

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Contractual Obligations 

As of December 31, 2017, our contractual obligations and the effect such obligations are expected to have on our 

liquidity and cash flows in future periods were as follows: 

(in thousands) 

Total 

Less than 
1 Year 

1-3 
Years 

3-5 
Years 

More than 
5 Years 

Payment Due by Period 

Operating leases ................................   $ 
Total ..................................................   $ 

12,965    $ 
12,965    $ 

4,322    $ 
4,322    $ 

4,534     $ 
4,534     $ 

3,923    $ 
3,923    $ 

186  
186  

The table above reflects only payment obligations that are fixed and determinable. Our commitments for operating 
leases relate to three of our United States manufacturing facilities; our European sales, customer service and technical support 
offices; three manufacturing and office facilities located in Germany and Finland; and our Japan facility.  

Financing Arrangements 

The following table summarizes our financing arrangements as of December 31, 2017 and 2016: 

(in thousands) 

December 31,  

2017 

2016 

Revolving Credit Facility, with interest rates from 2.50% to 2.56%, due at maturity in 

November 2019 ............................................................................................................   $ 
Total Financing Obligations ............................................................................................   $ 

5,000    $ 
5,000    $ 

-   
-   

Inflation 

We believe that inflation and changing prices have not had a material effect on our financial condition during the 

three most recent fiscal years.  

Off-Balance Sheet Arrangements 

Since our inception, we have not engaged in any off-balance sheet arrangements, including the use of structured 

finance, special purpose entities or variable interest entities. 

Critical Accounting Policies and Use of Estimates 

The  discussion  and  analysis  of  our  financial  condition  and  results  of  operations  is  based  upon  our  consolidated 
financial statements, which have been prepared in accordance with accounting principles generally accepted in the United 
States. The preparation of these financial statements requires us to make estimates, judgments and assumptions that affect 
the reported amount of assets, liabilities, revenue, expenses and related disclosures. On an ongoing basis, we evaluate our 
estimates, including those related to revenue recognition, goodwill, other intangible assets, stock-based compensation, and 
income taxes. We base our estimates of the carrying value of certain assets and liabilities on historical experience and on 
various other assumptions that we believe to be reasonable under the circumstances. In many cases, we could reasonably 
have used different accounting policies and estimates. In some cases, changes in the accounting estimates are reasonably 
likely to occur from period to period. Management has discussed the development, selection and disclosure of these estimates 
with the audit committee of our board of directors. Our actual results may differ significantly from these estimates under 
different assumptions or conditions. 

We believe the following critical accounting policies affect our more significant judgments used in the preparation 
of our consolidated financial statements. See the Notes to Consolidated Financial Statements included in Item 8. “Financial 
Statements and Supplementary Data” in this Annual Report on Form 10-K for additional information about these critical 
accounting policies, as well as a description of our other accounting policies. 

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Revenue Recognition 

We recognize revenue in accordance with ASC 605, Revenue Recognition, which states that revenue is realized or 
realizable and earned when all of the following criteria are met: (1) persuasive evidence of an arrangement exists, (2) delivery 
has  occurred  or  services  have  been  rendered,  (3) the  price  to  the  buyer  is  fixed  or  determinable,  and  (4) collectability  is 
reasonably assured. 

Revenue is recognized upon transfer of title and risk of loss, which is generally upon the shipment of parts in our 

Injection Molding, CNC Machining, 3D Printing, Sheet Metal and Other product lines. 

As of  January 1, 2018,  the  Company  has  adopted ASC  606,  Revenue  from  Contracts with  Customers, using  the 
modified retrospective approach. The Company manufactures parts that have no alternative use to the Company (since the 
parts  are  custom  made  to  specific  customer  orders),  and  the  Company  believes  for  certain  customers  there  is  a  legally 
enforceable right to payment for performance completed to date on these manufactured parts. For those manufactured parts 
that meet these two criteria, the Company will recognize revenue over time. 

Goodwill 

We recognize goodwill in accordance with ASC 350, Intangibles—Goodwill and Other. Goodwill is the excess of 
cost of an acquired entity over the amounts assigned to assets acquired and liabilities assumed in a business combination. 
Goodwill is not amortized. Goodwill is tested for impairment annually in the fourth quarter of each year, and is tested for 
impairment between annual tests if an event occurs or circumstances change that would indicate the carrying amount may be 
impaired. An impairment charge for goodwill is recognized only when the estimated fair value of a reporting unit, including 
goodwill,  is  less  than  its  carrying  amount.  As  of  December  31,  2017  no  impairment  charges  for  goodwill  have  been 
recognized. 

Other Intangible Assets 

We  recognize  other  intangibles  assets  in  accordance  with  ASC  350,  Intangibles—Goodwill  and  Other.  Other 
intangible  assets  include  internally  developed  software,  customer  relationships  and  other  intangible  assets  acquired  from 
independent parties. Other intangible assets with a definite life are amortized over a period ranging from two to 10 years on 
a straight line basis. Other intangible assets with a definite life are tested for impairment whenever events or circumstances 
indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss is recognized when 
the carrying amount of an asset exceeds the estimated undiscounted cash flows generated by the asset. As of December 31, 
2017 no impairment charges for intangible assets have been recognized. 

Stock-Based Compensation 

We determine our stock-based compensation in accordance with ASC 718, Compensation—Stock Compensation 
(ASC 718), which requires the measurement and recognition of compensation expense for all share-based payment awards 
made to employees and non-employee directors based on the grant date fair value of the award. 

Determining the appropriate fair value model and calculating the fair value of stock option grants requires the input 
of subjective assumptions. We use the Black-Scholes option pricing model to value our stock option awards. Stock-based 
compensation expense is significant to our consolidated financial statements and is calculated using our best estimates, which 
involve inherent uncertainties and the application of management’s judgment. Significant estimates include our expected 
term, stock price volatility and forfeiture rates. If different estimates and assumptions had been used, our common stock 
valuations could be significantly different and related stock-based compensation expense may be materially impacted. 

The Black-Scholes option pricing model requires inputs such as the risk-free interest rate, expected term, expected 
volatility and expected dividend yield. We base the risk-free interest rate that we use in the Black-Scholes option pricing 
model on zero coupon U.S. Treasury instruments with maturities similar to the expected term of the award being valued. The 
expected term of stock options is estimated from the vesting period of the award and represents the weighted average period 
that our stock options are expected to be outstanding. We estimated the volatility of our stock price based on the historic 
volatility of our common stock. We have never paid and do not anticipate paying any cash dividends in the foreseeable future 
and, therefore, we use an expected dividend yield of zero in the option pricing model. We account for forfeitures as they 
occur. 

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The fair value of each new employee and non-employee director option awarded was estimated on the date of grant 

for the periods below using the Black-Scholes option pricing model with the following assumptions: 

Year Ended December 31, 
2016 

2017 

2015 

Risk-free interest rate ...................................................................       2.24 - 2.36%         1.53 - 2.68%         1.69 - 1.77%    
Expected life (years) ....................................................................      
Expected volatility .......................................................................       42.68 - 44.68%        44.38 - 45.93%        46.80 - 47.23%   
Expected dividend yield ...............................................................      
Weighted average grant date fair value ........................................      

0% 
$32.26 

0% 
$26.61 

0% 
$32.42 

5.50 - 6.50 

6.50 

6.50 

Our 2012 Employee Stock Purchase Plan (ESPP) allows eligible employees to purchase a variable number of shares 
of our common stock during each offering period at a discount through payroll deductions of up to 15% of their eligible 
compensation, subject to plan limitations. The ESPP provides for six-month offering periods with a single purchase period, 
and at the end of each offering period, employees are able to purchase shares at 85% of the lower of the fair market value of 
our common stock on the first trading day of the offering period or on the last trading day of the offering period. We determine 
the fair value stock-based compensation related to our ESPP in accordance with ASC 718 using the component measurement 
approach and the Black-Scholes standard option pricing model. 

The  fair  value  of  each  offering  period  was  estimated  using  the  Black-Scholes  option  pricing  model  with  the 

following assumptions: 

Year ended December 31, 
2016 

2017 

2015 

Risk-free interest rate ...................................................................      0.97 - 1.48%         0.56 - 0.59% 
Expected life (months) .................................................................     
Expected volatility .......................................................................      24.49 - 34.51%        39.51 - 49.13%        29.41 - 37.64%   
Expected dividend yield ...............................................................     

       0.08 - 0.39%    

0.00% 

6.00 

6.00 

6.00 

0% 

0% 

There are significant differences among option valuation models, and this may result in a lack of comparability with 
other companies that use different models, methods and assumptions. If factors change and we employ different assumptions 
in the application of ASC 718 in future periods, or if we decide to use a different valuation model, such as a lattice model, 
the stock-based compensation expense that we record in the future under ASC 718 may differ significantly from what we 
have recorded using the Black-Scholes option pricing model and could materially affect our operating results. 

We  recognize  stock-based  compensation  expense  on  a  straight-line  basis  over  the  requisite  service  period.  We 
recorded stock-based compensation expense relating to stock options, restricted stock awards and our ESPP of $8.6 million, 
$6.8 million and $6.1 million during the years ended December 31, 2017, 2016 and 2015, respectively. As of December 31, 
2017, we had $3.8 million of unrecognized stock-based compensation costs related to unvested stock options that are expected 
to be recognized over a weighted average period of 3.3 years. We issued options to purchase 60,100, 117,480 and 110,335 
shares of our common stock in 2017, 2016 and 2015, respectively. 

In future periods, our stock-based compensation expense is expected to increase due to our existing unrecognized 
stock-based compensation and the issuance of additional stock-based awards to continue to attract and retain employees and 
non-employee directors. 

Income Taxes 

We  account  for  income  taxes  in  accordance  with  ASC  740,  Income  Taxes  (ASC  740).  Under  this  method,  we 
determine tax assets and liabilities based upon the differences between the financial statement carrying amounts and the tax 
basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to affect 
taxable income. The tax consequences of most events recognized in the current year’s financial statements are included in 
determining income taxes currently payable. However, because tax laws and financial accounting standards differ in their 

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recognition and measurement of assets, liabilities and equity, revenues, expenses, gains and losses, differences arise between 
the amount of taxable income and pretax financial income for a year and between the tax basis of assets or liabilities and their 
reported amounts in the financial statements. Because we assume that the reported amounts of assets and liabilities will be 
recovered and settled, respectively, a difference between the tax basis of an asset or liability and its reported amount in the 
balance sheet will result in a taxable or a deductible amount in some future years when the related liabilities are settled or the 
reported amounts of the assets are recovered, giving rise to a deferred tax asset or liability. We establish a valuation allowance 
for any portion of our deferred tax assets that we believe will not be recognized. 

ASC  740  also  clarifies  the  accounting  for  uncertainty  in  income  taxes  recognized  in  an  enterprise’s  financial 
statements by defining a criterion that an individual tax position must meet for any part of the benefit of that position to be 
recognized  in  an  enterprise’s  financial  statements.  Additionally,  ASC  740  provides  guidance  on  measurement,  de-
recognition, classification, interest and penalties, accounting in interim periods, disclosure and transition. Including interest 
and penalties, we have established a liability for uncertain tax positions of $4.6 million as of December 31, 2017. 

The effective tax rate decreased by 3.0% for the year ended December 31, 2017 when compared to 2016 primarily 
due to the impact of tax reform. The Tax Cuts and Jobs Act (the "Act") was enacted on December 22, 2017. The Act reduces 
the U.S. federal corporate tax rate from 35% to 21%, requires companies to pay a transition tax on earnings of certain foreign 
subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings. The reduction to the 
U.S. tax rate resulted in revaluing deferred tax liabilities which provided a tax benefit of $4.2 million. At December 31, 2017, 
we have not completed our accounting for the tax effects of the enactment of the Act. However, we have made a reasonable 
estimate  on  the  effects  of  the  transition  tax  and  recognized  a  provisional  amount  of  $2.4  million  which  is  included  as  a 
component of income tax expense from continuing operations. The foreign tax effects of the transition tax is based on our 
total post-1986 earnings and profits (E&P) that we previously deferred from U.S. income taxes. We have not yet completed 
our calculation of the total post-1986 E&P. Furthermore, the transition tax is based in part on the amount of those earnings 
held in cash and other specified assets. This amount may change when we finalize the calculation of post-1986 foreign E&P 
previously deferred from U.S. federal taxation and finalize the amounts held in cash or other specified assets. No additional 
income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax or any 
additional outside basis difference inherent in these entities as these amounts continue to be indefinitely reinvested in foreign 
operations.  

Recently adopted accounting pronouncements 

During  the  first  quarter  of  2017,  the  Company  adopted  the  Financial  Accounting  Standards  Board  (FASB) 
Accounting Standards Update (ASU) 2016-09, Employee Share-Based Payment Accounting, which is intended to simplify 
several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, 
forfeitures,  statutory  tax  withholding  requirements,  and  classification  in  the  statement  of  cash  flows.  As  a  result  of  the 
adoption, the amount in excess tax benefits from stock-based compensation is recorded in our provision for income taxes. 
For the three and twelve months ended December 31, 2017, the amount recorded in the provision for income taxes was $0.4 
million and $0.7 million, respectively. Historically, these amounts were recorded as additional paid-in capital as required by 
the  accounting  pronouncements  in  force  during  the  periods  presented.  In  addition,  for  each  period  presented,  cash  flows 
related to excess tax benefits are now classified as an operating activity along with other income tax cash flows. Retrospective 
application  of  the  cash  flow  presentation  requirements  resulted  in  an  increase  to  net  cash  provided  by  operations  and  a 
decrease to net cash provided by financing activities of $2.5 million and $5.5 million for the twelve months ended December 
31, 2016 and 2015, respectively.  

In January 2017, the FASB issued ASU 2017-01, Business Combinations, which is intended to clarify the definition 
of a business to assist with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or 
businesses.  This  guidance  will  be  effective  for  annual  reporting  periods  beginning  after  December  15,  2017  and  interim 
periods  within  those  fiscal  years  with  early  adoption  permitted.  The  Company  has  elected  to  early  adopt  this  guidance 
effective October 1, 2017. The impact on its consolidated financial statements is not material. 

Recently issued accounting pronouncements 

In  May  2014,  the  FASB  issued  ASU  No.  2014-09,  Revenue  from  Contracts  with  Customers.  This  ASU  is  a 
comprehensive new revenue recognition model that requires a company to recognize revenue from the transfer of goods or 
services to customers in an amount that reflects the consideration that the entity expects to receive in exchange for those 
goods or services. The Company is required to adopt the new pronouncement using one of two retrospective application 
methods. 

46 

 
  
  
  
  
  
 
  
  
On July 9, 2015, the FASB voted to approve a deferral of the effective date of ASU 2014-09 by one year to December 
15, 2017 for annual reporting periods beginning after that date. As of January 1, 2018, the Company has adopted the new 
revenue standard using the modified retrospective approach. The Company manufactures parts that have no alternative use 
to  the  Company  (since  the  parts  are  custom  made  to  specific  customer  orders),  and the  Company believes  for  certain 
customers there is a legally enforceable right to payment for performance completed to date on these manufactured parts. For 
those manufactured parts that meet these two criteria, the Company will recognize revenue over time. The expected transition 
adjustment to be recorded is an increase to the Company’s retained earnings balance on January 1, 2018 of $1.5 million.  

In February 2016, the FASB issued ASU 2016-02, Leases, which introduces the balance sheet recognition of lease 
assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The guidance 
will be effective for annual reporting periods beginning after December 15, 2018 and interim periods within those fiscal years 
with  early  adoption  permitted.  The  Company  is  evaluating  the  impact  of  the  future  adoption  of  this  standard  on  its 
consolidated financial statements, but does not expect the impact to be material because the Company owns a majority of its 
buildings and significant assets.  

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows, which is intended to reduce diversity in 
how companies present and classify certain cash receipts and cash payments in the statement of cash flows. This guidance 
will be effective for annual reporting periods beginning after December 15, 2017 and interim periods within those fiscal years 
with  early  adoption  permitted.  The  Company  is  evaluating  the  impact  of  the  future  adoption  of  this  guidance  on  its 
consolidated financial statements, but does not expect the impact to be material. 

In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other, which is intended to simplify 
the subsequent measurement of goodwill. This guidance will be effective for impairment tests in fiscal years beginning after 
December 15, 2019 and interim periods within those fiscal years with early adoption permitted. The Company is evaluating 
the impact of future adoption of this guidance on its consolidated financial statements, but does not expect the impact to be 
material. 

Item 7A. Quantitative and Qualitative Disclosures About Market Risk 

Quantitative and Qualitative Disclosure of Market Risks 

Our exposure to market risk is confined to our cash and cash equivalent balances and investments. The primary 
goals of our investment policy are preservation of capital, fulfillment of liquidity needs and fiduciary control of cash and cash 
equivalent balances. We also seek to maximize income from our investments without assuming significant risk. To achieve 
our goals, we maintain a portfolio of debt securities with various maturities ranging from one to three years. Due to the nature 
of our investment portfolio, we are subject to interest rate risks, which we mitigate by holding our investments to maturity. 
In future periods, we will continue to evaluate our investment policy in order to continue our overall goals. 

47 

 
  
  
  
 
  
  
 
 
Foreign Currency Risk 

As  a  result  of  our  foreign  operations,  we  have  revenue,  expenses,  assets  and  liabilities  that  are  denominated  in 
foreign  currencies.  We  generate  revenue  and  incur  production  costs  and  operating  expenses  in  British  Pound,  Euro  and 
Japanese Yen. 

Our operating results and cash flows are adversely impacted when the United States dollar appreciates relative to 
other foreign currencies. Additionally, our operating results and cash flows are adversely impacted when the British Pound 
appreciates  relative  to  the  Euro.  As  we  expand  internationally,  our  results  of  operations  and  cash  flows  will  become 
increasingly subject to changes in foreign exchange rates. 

We have not used forward contracts or currency borrowings to hedge our exposure to foreign currency risk. Foreign 
currency  risk  can  be  assessed  by  estimating  the  change  in  results  of  operations  or  financial  position  resulting  from  a 
hypothetical 10% adverse change in foreign exchange rates. We believe such a change would generally not have a material 
impact  on  our  financial  position,  but  could  have  a  material  impact  on  our  results  of  operations.  We  recognized  foreign 
currency gains of $0.4 million and $1.4 million for the year ended December 31, 2017 and 2016, respectively and foreign 
currency losses of $0.5 million the year ended December 31, 2015. 

48 

 
  
  
  
 
 
 
Item 8. Financial Statements and Supplementary Data 

Proto Labs, Inc. 
Index to Consolidated Financial Statements 

Reports of Independent Registered Public Accounting Firm  ........................................................................................  50 
Consolidated Balance Sheets at December 31, 2017 and 2016 ......................................................................................  52 
Consolidated Statements of Comprehensive Income for the years ended December 31, 2017, 2016 and 2015 ............  53 
Consolidated Statements of Shareholders' Equity for the years ended December 31, 2017, 2016 and 2015 .................  54 
Consolidated Statements of Cash Flows for the years ended December 31, 2017, 2016 and 2015 ...............................  55 
Notes to Consolidated Financial Statements ..................................................................................................................  56 

Page 

49 

 
  
  
  
  
 
 
 
Report of Independent Registered Public Accounting Firm  

To the Shareholders and the Board of Directors of Proto Labs, Inc. 

Opinion on the Financial Statements  

We have audited the accompanying consolidated balance sheets of Proto Labs, Inc. (the Company) as of December 31, 2017 
and 2016, the related consolidated statements of comprehensive income, shareholders' equity and cash flows for each of the 
three  years  in  the  period  ended  December  31,  2017,  and  the  related  notes  (collectively  referred  to  as  the  “consolidated 
financial  statements”).  In  our  opinion,  the  consolidated  financial  statements  present  fairly,  in  all  material  respects,  the 
financial position of the Company at December 31, 2017 and 2016, and the results of its operations and its cash flows for 
each  of  the  three  years  in  the  period  ended  December  31,  2017,  in  conformity  with  U.S.  generally  accepted  accounting 
principles.  

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the Company's internal control over financial reporting as of December 31, 2017, based on criteria established in 
Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 
(2013 framework) and our report dated February 23, 2018 expressed an unqualified opinion thereon.  

Basis for Opinion  

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

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform 
the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether 
due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial 
statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included 
examining,  on  a  test  basis,  evidence  regarding  the  amounts  and  disclosures  in  the  financial  statements.  Our  audits  also 
included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the 
overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.  

/s/ Ernst & Young LLP 

We have served as the Company’s auditor since 2011.  

Minneapolis, Minnesota  
February 23, 2018 

50 

 
  
  
  
  
  
  
  
  
  
  
  
 
 
Report of Independent Registered Public Accounting Firm 

To the Shareholders and the Board of Directors of Proto Labs, Inc. 

Opinion on Internal Control over Financial Reporting  

We  have  audited  Proto  Labs,  Inc.’s  internal  control  over  financial  reporting  as  of  December  31,  2017,  based  on  criteria 
established  in  Internal  Control—Integrated  Framework  issued  by  the  Committee  of  Sponsoring  Organizations  of  the 
Treadway Commission (2013 framework) (the COSO criteria). In our opinion, Proto Labs, Inc. (the Company) maintained, 
in  all  material  respects,  effective  internal  control  over  financial  reporting  as of December 31, 2017, based on  the  COSO 
criteria.  

As  indicated  in  the  accompanying  Management’s  Annual  Report  on  Internal  Control  Over  Financial  Reporting, 
management’s assessment of and conclusion on the effectiveness of internal control over financial reporting did not include 
the internal controls of Rapid Manufacturing Group, LLC, which is included in the 2017 consolidated financial statements 
of the Company and constituted 3% of total assets as of December 31, 2017 and 1% of revenues for the year then ended. Our 
audit of internal control over financial reporting of the Company also did not include an evaluation of the internal control 
over financial reporting of Rapid Manufacturing Group, LLC. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) 
(PCAOB), the consolidated balance sheets of Proto Labs, Inc. as of December 31, 2017 and 2016, the related consolidated 
statements of comprehensive income, shareholders' equity and cash flows for each of the three years in the period ended 
December 31, 2017, and the related notes and our report dated February 23, 2018 expressed an unqualified opinion thereon.  

Basis for Opinion  

the  effectiveness  of 

The  Company’s  management  is  responsible  for  maintaining  effective  internal  control over  financial  reporting  and for  its 
assessment  of 
the  accompanying 
Management’s Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on 
the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with 
the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities 
laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.  

internal  control  over  financial  reporting 

included 

in 

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform 
the audit to obtain reasonable assurance about whether 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, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, 
and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a 
reasonable basis for our opinion. 

Definition and Limitations of Internal Control Over Financial Reporting  

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally 
accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures 
that  (1) pertain  to  the  maintenance  of  records  that,  in reasonable detail,  accurately  and  fairly  reflect  the  transactions  and 
dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to 
permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and 
expenditures of the company are being made only in accordance with authorizations of management and directors of the 
company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or 
disposition of the company’s assets that could have a material effect on the financial statements.  

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

/s/ Ernst & Young LLP 

Minneapolis, Minnesota  
February 23, 2018 

51 

 
 
 
Proto Labs, Inc. 
Consolidated Balance Sheets 
(In thousands, except share and per share amounts) 

Assets 
Current assets 

Cash and cash equivalents .........................................................................................   $ 
Short-term marketable securities ...............................................................................     
Accounts receivable, net of allowance for doubtful accounts of $757 and $442 as 

of December 31, 2017 and December 31, 2016, respectively ...............................     
Inventory ...................................................................................................................     
Prepaid expenses and other current assets .................................................................     
Income taxes receivable ............................................................................................     
Total current assets.............................................................................................     
Property and equipment, net .............................................................................................     
Goodwill ...........................................................................................................................     
Other intangible assets, net ...............................................................................................     
Long-term marketable securities ......................................................................................     
Other long-term assets ......................................................................................................     
Total assets .........................................................................................................   $ 

Liabilities and shareholders' equity 
Current liabilities 

Accounts payable ......................................................................................................   $ 
Accrued compensation ..............................................................................................     
Accrued liabilities and other .....................................................................................     
Short-term debt obligations .......................................................................................     
Income taxes payable ................................................................................................     
Total current liabilities .......................................................................................     
Long-term income taxes payable ......................................................................................     
Long-term deferred tax liabilities .....................................................................................     
Other long-term liabilities ................................................................................................     
Total liabilities ...................................................................................................     

Shareholders' equity 

Preferred stock, $0.001 par value, authorized 10,000,000 shares; issued and 
outstanding 0 shares as of December 31, 2017 and December 31, 2016, 
respectively ............................................................................................................     

Common stock, $0.001 par value, authorized 150,000,000 shares; issued and 

outstanding 26,828,651 and 26,504,868 shares as of December 31, 2017 and 
December 31, 2016, respectively ...........................................................................     
Additional paid-in capital ..........................................................................................     
Retained earnings ......................................................................................................     
Accumulated other comprehensive loss ....................................................................     
Total shareholders' equity ..................................................................................     
Total liabilities and shareholders' equity ............................................................   $ 

December 31, 

2017 

2016 

36,707    $ 
57,424      

51,503      
11,271      
6,267      
1,832      
165,004      
166,440      
128,504      
19,084      
37,034      
2,672      
518,738    $ 

15,876    $ 
12,100      
8,408      
5,000      
2,371      
43,755      
2,181      
6,966      
4,621      
57,523      

68,795  
39,477  

34,060  
9,310  
5,697  
445  
157,784  
139,474  
28,916  
2,655  
84,479  
933  
414,241  

11,322  
7,670  
4,435  
-  
-  
23,427  
-  
7,003  
3,978  
34,408  

-      

-  

27      
241,725      
224,697      
(5,234)     
461,215      
518,738    $ 

26  
213,857  
176,703  
(10,753) 
379,833  
414,241  

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

52 

 
 
 
 
 
  
  
  
  
  
    
  
  
      
        
  
      
        
  
      
        
  
  
      
        
  
      
        
  
      
        
  
  
      
        
  
      
        
  
  
    
       
   
 
 
 
Proto Labs, Inc. 
Consolidated Statements of Comprehensive Income 
(In thousands, except share and per share amounts) 

Year Ended December 31, 
2016 

2017 

2015 

Statements of Operations: 
Revenue ..........................................................................................   $ 
Cost of revenue ...............................................................................     
Gross profit .....................................................................................     
Operating expenses ........................................................................       

Marketing and sales .................................................................     
Research and development ......................................................     
General and administrative ......................................................     
Total operating expenses .....................................................     
Income from operations ..................................................................     
Other income, net ...........................................................................     
Income before income taxes ...........................................................     
Provision for income taxes .............................................................     
Net income .....................................................................................   $ 

344,490    $ 
150,648      
193,842      

56,856      
23,560      
41,200      
121,616      
72,226      
2,209      
74,435      
22,657      
51,778    $ 

298,055    $ 
131,118      
166,937      

46,131      
22,388      
36,651      
105,170      
61,767      
2,454      
64,221      
21,514      
42,707    $ 

264,106  
109,703  
154,403  

39,188  
18,350  
29,716  
87,254  
67,149  
712  
67,861  
21,347  
46,514  

Net income per share: 

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

1.94    $ 
1.93    $ 

1.62    $ 
1.61    $ 

1.79  
1.77  

Shares used to compute net income per share: 

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

26,647,610      
26,845,071      

26,365,173      
26,564,639      

26,005,858  
26,320,284  

Other Comprehensive Income (Loss), net of tax 
Foreign currency translation adjustments .......................................   $ 
Comprehensive income ..................................................................   $ 

5,519    $ 
57,297    $ 

(5,541)   $ 
37,166    $ 

(2,283) 
44,231  

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

53 

 
 
 
 
 
  
  
  
  
  
    
    
  
  
      
        
        
  
      
        
        
  
        
        
  
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
  
    
       
       
   
 
 
 
Excess tax benefit from stock 

option exercises .....................      

Stock-based compensation 

expense ..................................      
Net income ................................      
Other comprehensive income 

Foreign currency translation 

adjustment ..........................      
Comprehensive income.............      

Excess tax benefit from stock 

option exercises .....................      

Stock-based compensation 

expense ..................................      
Net income ................................      
Other comprehensive income 

Foreign currency translation 

adjustment ..........................      
Comprehensive income.............      

Common shares issued for 

RAPID acquisition ................  

Stock-based compensation 

expense ..................................      
Repurchases of Common Stock      
Net income ................................      
Other comprehensive income 

Foreign currency translation 

adjustment ..........................      
Comprehensive income.............      

Proto Labs, Inc. 
Consolidated Statements of Shareholders' Equity 
(In thousands, except share and per share amounts) 

Common Stock 

   Shares 

     Amount      

    Additional       
Paid-In  
Capital       

Retained  
Earnings      

Accumulated 
Other  
Comprehensive 
Loss  

     Total 

Balance at January 1, 2015 ........      25,838,110      

26      

180,960      

87,482      

(2,929)     

265,539   

Common shares issued on 

exercise of options and other .      

362,608      

-      

6,254      

-      

-      

-      

-      

(2,283)     

Balance at December 31, 2015 ...      26,200,718    $ 

26    $  198,835    $  133,996    $ 

(5,212)   $

Common shares issued on 

exercise of options and other .      

304,150      

-      

5,715      

-      

-      

-      

-      

-      

5,539      

-      
-      

6,082      
-      

-      
46,514      

-      

2,532      

-      
-      

6,775      
-      

-      
42,707      

-      

-      
-      

-      

-      
-      

-      

-      

-      

-      

(5,541)     

Balance at December 31, 2016 ...      26,504,868    $ 

26    $  213,857    $  176,703    $ 

(10,753)   $

Common shares issued on 

exercise of options and other .      

283,449      

118,140      

-      
(77,806)     
-      

1      

1      

8,603      

11,335      

-      

-      

-      
(1)     
-      

8,558      
(628)     
-      

-      
(3,784)     
51,778      

-      

-      

-      

-      

-      

-      

-      

-      

5,519      

Balance at December 31, 2017 ...      26,828,651    $ 

27    $  241,725    $  224,697    $ 

(5,234)   $

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

54 

-      

6,254   

-      

5,539   

-      
-      

6,082   
46,514   

(2,283 ) 
44,231   
327,645   

-      

5,715   

-      

2,532   

-      
-      

6,775   
42,707   

(5,541 ) 
37,166   
379,833   

8,604   

11,336   

8,558   
(4,413 ) 
51,778   

5,519   
57,297   
461,215   

 
 
 
 
   
 
     
 
   
 
     
 
 
  
  
  
    
      
  
  
  
  
  
      
        
        
        
         
        
  
      
        
        
        
         
        
  
       
       
       
       
       
      
        
        
        
         
        
  
       
       
       
       
       
    
       
      
        
        
        
         
        
  
       
       
       
       
       
  
    
       
       
       
       
       
    
  
 
 
Proto Labs, Inc. 
Consolidated Statements of Cash Flows 
(In thousands) 

Year Ended December 31, 
2016 

2017 

2015 

51,778    $ 

42,707    $ 

46,514  

Operating activities 

Net income .........................................................................    $ 
Adjustments to reconcile net income to net cash provided 

by operating activities: 

Depreciation and amortization ....................................      
Stock-based compensation expense ............................      
Deferred taxes .............................................................      
Loss on impairment of assets ......................................      
Gain on acquisition .....................................................      
Amortization of held-to-maturity securities ................      
Other ...........................................................................      
Changes in operating assets and liabilities, net of 

acquisitions: 

Accounts receivable .............................................      
Inventories ...........................................................      
Prepaid expenses and other ..................................      
Income taxes ........................................................      
Accounts payable .................................................      
Accrued liabilities and other ................................      
Net cash provided by operating activities ..........................      

18,474      
8,558      
1,174      
513      
-      
1,063      
(153)     

(9,933)     
(985)     
(691)     
1,646      
3,176      
7,128      
81,748      

Investing activities 

Purchases of property and equipment ................................      
Cash used for acquisitions, net of cash acquired ................      
Purchases of other assets and investments .........................      
Purchases of marketable securities .....................................      
Proceeds from maturities of marketable securities .............      
Net cash used in investing activities ...................................      

(32,635)     
(110,533)     
(8,742)     
(20,037)     
47,972      
(123,975)     

Financing activities 

Payments on debt ...............................................................      
Proceeds from issuance of debt ..........................................      
Acquisition-related contingent consideration .....................      
Repurchases of common stock ...........................................      
Proceeds from exercises of stock options and other ...........      
Net cash provided by financing activities ..........................      
Effect of exchange rate changes on cash and cash 

equivalents ......................................................................      
Net (decrease) increase in cash and cash equivalents ...........      
Cash and cash equivalents, beginning of period ...................      
Cash and cash equivalents, end of period ..............................    $ 

-      
5,000      
-      
(4,410)     
8,602      
9,192      

947      
(32,088)     
68,795      
36,707    $ 

17,485      
6,775      
2,780      
455      
-      
1,173      
(1,541)     

900      
136      
(1,312)     
8,207      
(1,116)     
850      
77,499      

(33,616)     
-      
-      
(89,315)     
62,176      
(60,755)     

-      
-      
(400)     
-      
5,715      
5,315      

(917)     
21,142      
47,653      
68,795    $ 

14,126  
6,082  
2,837  
-  
(344) 
1,234  
 -  

(11,371) 
(2,097) 
(2,047) 
(2,310) 
5,781  
5,691  
64,096  

(44,362) 
(5,032) 
-  
(66,393) 
52,193  
(63,594) 

(152) 
-  
(1,400) 
-  
6,251  
4,699  

(877) 
4,324  
43,329  
47,653  

Supplemental cash flow disclosure 

Cash paid for interest .........................................................    $ 
Cash paid for taxes .............................................................    $ 

19    $ 
19,113    $ 

1    $ 
9,802    $ 

5  
20,330  

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

55 

 
 
 
 
 
  
  
  
  
  
    
    
  
  
      
        
        
  
      
        
        
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
  
      
        
        
  
      
        
        
  
  
    
       
       
   
 
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Note 1 — Nature of Business 

Organization and business 

Proto Labs, Inc.  and  its  subsidiaries (Proto  Labs,  the  Company,  we, us, or  our)  is  an e-commerce  driven  digital 
manufacturer  of  quick-turn,  on-demand injection-molded,  computer  numerical  control  (CNC)  machined,  3D-printed  and 
sheet  metal-fabricated  custom  parts  for  prototyping  and  short-run  production.  The  Company’s  customers  are  product 
developers and engineers throughout the world who require a faster and less expensive way to obtain low volumes of parts. 
The Company’s proprietary technology eliminates most of the time-consuming and expensive skilled labor conventionally 
required  to  quote  and  manufacture  parts  in  low  volumes,  and  its  customers  conduct  nearly  all  of  their  business  with  the 
Company over the Internet. The Company targets its product lines to the millions of product developers and engineers who 
use three-dimensional (3D) computer-aided design (CAD) software to design products across a diverse range of end-markets. 
The Company has established operations in the United States, Europe and Japan, which the Company believes are among the 
largest geographic markets where these product developers and engineers are located. The Company’s primary manufacturing 
product lines currently include Injection Molding, CNC Machining, 3D Printing and Sheet Metal. Proto Labs, Inc. is located 
in Maple Plain, Minnesota. The Company’s subsidiaries are: 

Name 

   PL-US International LLC ......................................................................................................     
   Rapid Manufacturing Group LLC .........................................................................................     
   Rapid Sheet Metal LLC .........................................................................................................     
   NH Rapid Machining LLC ....................................................................................................     
   Rapid Wire and Cable LLC ...................................................................................................     
   Proto Labs Ltd. ......................................................................................................................     
   PL Euro Services Ltd. ............................................................................................................     
   PL International UK LLP ......................................................................................................     
   PL International Holdings, UK, Ltd. .....................................................................................   
   Proto Labs Distribution, Ltd. .................................................................................................     
   PL DE Holding GmbH ..........................................................................................................     
   Proto Labs GmbH ..................................................................................................................     
   Proto Labs Eschenlohe GmbH ..............................................................................................     
   PL Finland Oy .......................................................................................................................     
   Proto Labs AB .......................................................................................................................     
   Proto Labs, G.K. ....................................................................................................................     

Location 

United States 
United States 
United States 
United States 
United States 
United Kingdom 
United Kingdom 
United Kingdom 
United Kingdom 
United Kingdom 
Germany 
Germany 
Germany 
Finland 
Sweden 
Japan 

Note 2 — Summary of Significant Accounting Policies 

Principles of consolidation 

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries, as 
listed  within  “Organization  and  business”  above.  All  intercompany  accounts  and  transactions  have  been  eliminated  in 
consolidation. 

Comprehensive income 

Components  of  comprehensive  income  include  net  income  and  foreign  currency  translation  adjustments. 
Comprehensive income is disclosed in the accompanying consolidated statements of comprehensive income and consolidated 
statements of shareholders’ equity. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Accounting estimates 

The preparation of financial statements in conformity with accounting principles generally accepted in the United 
States of America (U.S. GAAP) requires management to make estimates and assumptions that affect the reported amounts of 
assets and liabilities and related disclosures at the date of the financial statements and the reported amounts of revenues and 
expenses during the reporting period. Actual results could differ from those estimates. 

Cash and cash equivalents 

Cash and cash equivalents include cash and other investments, including marketable securities, with maturities of 
three months or less at the date of purchase. The Company maintains its cash in bank deposit accounts, which, at times, may 
exceed federally insured limits. The Company has not experienced any losses on such accounts. 

Marketable securities 

Marketable securities include held-to-maturity debt securities recorded at amortized cost. Management determines 
the appropriate classification of debt securities at the time of purchase and reevaluates such designation as of each balance 
sheet date. Debt securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the 
securities to maturity. Held-to-maturity securities are stated at amortized cost, adjusted for amortization of premiums and 
accretion  of  discounts  to  maturity  computed  under  the  effective  interest  method.  Such  amortization  is  included  in  other 
income,  net.  Interest  on  securities  classified  as  held  to  maturity  is  included  in  other  income,  net.  The  classification  of 
marketable securities as current or non-current is dependent upon the security’s maturity date. Securities with maturities of 
three months or less at the time of purchase are categorized as cash equivalents as described above. The Company reviews 
impairments associated with its marketable securities in accordance with the measurement guidance provided by Accounting 
Standards  Codification  (ASC)  320,  Investments  –  Debt  and  Equity  Securities,  when  determining  the  classification  of 
impairment as “temporary” or “other-than-temporary.” The factors used to differentiate between temporary and other-than-
temporary include assessment of the quality of the security, credit ratings actions and management’s intent to hold the security 
to maturity as well as other factors. 

Accounts receivable and allowance for doubtful accounts 

Accounts receivable are reported at the invoiced amount less an allowance for doubtful accounts. As of each balance 
sheet date, the Company evaluates its accounts receivable and establishes an allowance for doubtful accounts based on a 
combination  of  specific  customer  circumstances  and  credit  conditions  taking  into  account  the  history  of  write-offs  and 
collections. A receivable is considered past due if payment has not been received within the period agreed upon in the invoice. 
Accounts receivable are written off after all collection efforts have been exhausted. Recoveries of trade receivables previously 
written off are recorded when received. 

Inventory 

Inventory consists primarily of raw materials, which are recorded at the lower of cost or market, using the average 
cost method, which approximates first-in, first-out (FIFO) cost. The Company periodically reviews its inventory for slow-
moving,  damaged  and  discontinued  items  and  provides  allowances  to  reduce  such  items  identified  to  their  recoverable 
amounts. 

Property, equipment and leasehold improvements 

Property, equipment and leasehold improvements are stated at cost. Major improvements that substantially extend 
an asset’s useful life are capitalized. Repairs, maintenance and minor improvements are charged to operations as incurred. 
Depreciation, including amortization of leasehold improvements and assets recorded under capital leases, is calculated using 
the straight-line method over the estimated useful lives of the individual assets and ranges from 3 to 39 years. Manufacturing 
equipment  is  depreciated  over  3  to  15 years,  office  furniture  and  equipment  are  depreciated  over  3  to  7 years,  computer 
hardware and software are depreciated over 3 to 5 years, building costs are depreciated over 39 years, leasehold improvements 
are depreciated over the estimated lives of the related assets or the life of the lease, whichever is shorter, and building and 
land improvements are depreciated over 10 to 39 years. Assets not in service are not depreciated until the asset is put into 
use. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

The Company follows ASC 350-40, Internal-Use Software, in accounting for internally developed software. As of 
December 31, 2017, $4.9 million of external software development costs were capitalized. As of December 31, 2016 and 
2015,  all  internal  use  software  projects  were  in  the  post-implementation/operation  stage  and  therefore,  no  software 
development costs were capitalized.  

Goodwill 

The Company recognizes goodwill in accordance with ASC 350, Intangibles—Goodwill and Other. Goodwill is the 
excess  of  cost  of  an  acquired  entity  over  the  amounts  assigned  to  assets  acquired  and  liabilities  assumed  in  a  business 
combination. Goodwill is not amortized. Goodwill is tested for impairment annually in the fourth quarter of each year, and is 
tested for impairment between annual tests if an event occurs or circumstances change that would indicate the carrying amount 
may be impaired. An impairment charge for goodwill is recognized only when the estimated fair value of a reporting unit, 
including goodwill, is less than its carrying amount. 

During the fourth quarter of 2016, the Company changed the date of the annual impairment test from December 31 
to October 1. The change was made to more closely align the impairment testing date with the Company’s forecasting process. 
This change in method of applying an accounting principal was not material. 

Other Intangible Assets 

Other  intangible  assets  include  internally  developed  software,  customer  relationships  and  other  intangible  assets 
acquired from other independent parties. Other intangible assets with a definite life are amortized over a period ranging from 
two to 10 years on a straight line basis. Other intangible assets with a definite life are tested for impairment whenever events 
or circumstances indicate that the carrying amount of an asset (asset group) may not be recoverable. An impairment loss is 
recognized when the carrying amount of an asset exceeds the estimated undiscounted cash flows generated by the asset. The 
amount of the impairment loss recorded is calculated by the excess of the asset’s carrying value over its fair value. 

Accounting for long-lived assets 

The Company periodically reviews the carrying amount of its property, equipment and leasehold improvements to 
determine  if  circumstances  exist  indicating  an  impairment  or  if  depreciation  periods  should  be  modified.  If  facts  or 
circumstances support the possibility of impairment, the Company will prepare a projection of the undiscounted future cash 
flows of the specific assets to determine if the assets are recoverable. If impairment exists based on these projections, an 
adjustment will be made to reduce the carrying amount of the specific assets to fair value. 

Revenue recognition 

The Company recognizes revenue when it is realized or realizable and earned when all of the following criteria are 
met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the price to the 
buyer is fixed or determinable and collectability is reasonably assured. Revenue is recognized upon transfer of title and risk 
of loss, which is generally upon the shipment of parts in our Injection Molding, CNC Machining, 3D Printing and Sheet 
Metal product lines. Freight billed to customers is included in revenues, and all freight expenses paid by the Company are 
included in cost of revenue.  

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Income taxes 

The Company accounts for income taxes in accordance with ASC 740, Income Taxes (ASC 740). Under this method, 
the  Company  determines  tax  assets  and  liabilities  based  upon  the  differences  between  the  financial  statement  carrying 
amounts and the tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are 
expected to affect taxable income. The tax consequences of most events recognized in the financial statements are included 
in determining income taxes currently payable. However, because tax laws and financial accounting standards differ in their 
recognition and measurement of assets, liabilities and equity, revenues, expenses, gains and losses, differences arise between 
the amount of taxable income and pretax financial income for a year and between the tax basis of assets or liabilities and their 
reported amounts in the financial statements. Because the Company assumes that the reported amounts of assets and liabilities 
will be recovered and settled, respectively, a difference between the tax basis of an asset or liability and its reported amount 
in the balance sheet will result in a taxable or a deductible amount in some future years when the related liabilities are settled 
or the reported amounts of the assets are recovered, giving rise to a deferred tax asset or liability. The Company establishes 
a valuation allowance for any portion of its deferred tax assets that the Company believes may not be recognized. 

ASC  740  also  clarifies  the  accounting  for  uncertainty  in  income  taxes  recognized  in  an  enterprise’s  financial 
statements  by  requiring  that  individual  tax  positions  are  recorded  only  when  they  meet  a  more-likely-than-not  criterion. 
Additionally, ASC 740 provides guidance on measurement, de-recognition, classification, interest and penalties, accounting 
in interim periods, disclosure and transition. 

Stock-based compensation 

The  Company  accounts  for  stock-based  compensation  in  accordance  with  ASC  718,  Compensation—Stock 
Compensation  (ASC  718).  Under  the  fair  value  recognition  provisions  of  ASC  718,  the  Company  measures  stock-based 
compensation cost at the grant date fair value and recognizes the compensation expense over the requisite service period, 
which  is  the  vesting  period,  using  a  straight-line  attribution  method.  The  amount  of  stock-based  compensation  expense 
recognized during a period is based on the portion of the awards that are ultimately expected to vest. The Company accounts 
for forfeitures as they occur. Ultimately, the total expense recognized over the vesting period will only be for those awards 
that vest. The Company’s awards are not eligible to vest early in the event of retirement, however, the awards vest early in 
the event of a change in control. 

In determining the compensation cost of the options granted, the fair value of options granted has been estimated on 

the date of grant using the Black-Scholes option-pricing model. 

Advertising costs 

Advertising is expensed as incurred and was approximately $10.7 million, $10.5 million and $10.0 million for the 

years ended December 31, 2017, 2016 and 2015, respectively. 

Research and development 

Research  and  development  expenses  consist  primarily  of  personnel  and  outside  service  costs  related  to  the 
development  of  new  processes  and  product  lines, enhancement  of  existing  product  lines,  quality  assurance  and  testing. 
Research  and  development  costs  were  approximately  $23.6  million,  $22.4  million  and  $18.4  million  for  the  years  ended 
December 31, 2017, 2016 and 2015, respectively. 

Foreign currency translation/transactions 

The Company translated the balance sheets of its foreign subsidiaries at period-end exchange rates and the income 
statement at the average exchange rates in effect throughout the period. The Company has recorded the translation adjustment 
as a separate component of consolidated shareholders’ equity. Foreign currency transaction gains and losses are recognized 
in the consolidated statements of comprehensive income. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Business combinations 

The Company accounts for business combinations in accordance with ASC 805, Business Combinations (ASC 805). 
On November 30, 2017, the Company acquired RAPID for $121.8 million, consisting of $110.5 million in cash and $11.3 
million in the Company’s common stock. 

Recently adopted accounting pronouncements 

During  the  first  quarter  of  2017,  the  Company  adopted  the  Financial  Accounting  Standards  Board  (FASB) 
Accounting Standards Update (ASU) 2016-09, Employee Share-Based Payment Accounting, which is intended to simplify 
several aspects of the accounting for employee share-based payment transactions, including the accounting for income taxes, 
forfeitures,  statutory  tax  withholding  requirements,  and  classification  in  the  statement  of  cash  flows.  As  a  result  of  the 
adoption, the amount in excess tax benefits from stock-based compensation is recorded in our provision for income taxes. 
For the three and twelve months ended December 31, 2017, the amount recorded in the provision for income taxes was $0.4 
million and $0.7 million, respectively. Historically, these amounts were recorded as additional paid-in capital as required by 
the  accounting  pronouncements  in  force  during  the  periods  presented.  In  addition,  for  each  period  presented,  cash  flows 
related to excess tax benefits are now classified as an operating activity along with other income tax cash flows. Retrospective 
application  of  the  cash  flow  presentation  requirements  resulted  in  an  increase  to  net  cash  provided  by  operations  and  a 
decrease to net cash provided by financing activities of $2.5 million and $5.5 million for the twelve months ended December 
31, 2016 and 2015, respectively.  

In January 2017, the FASB issued ASU 2017-01, Business Combinations, which is intended to clarify the definition 
of a business to assist with evaluating whether transactions should be accounted for as acquisitions or disposals of assets or 
businesses.  This  guidance  will  be  effective  for  annual  reporting  periods  beginning  after  December  15,  2017  and  interim 
periods  within  those  fiscal  years  with  early  adoption  permitted.  The  Company  has  elected  to  early  adopt  this  guidance 
effective October 1, 2017. The impact on its consolidated financial statements is not material. 

Recently issued accounting pronouncements 

In  May  2014,  the  FASB  issued  ASU  No.  2014-09,  Revenue  from  Contracts  with  Customers.  This  ASU  is  a 
comprehensive new revenue recognition model that requires a company to recognize revenue from the transfer of goods or 
services to customers in an amount that reflects the consideration that the entity expects to receive in exchange for those 
goods or services. The Company is required to adopt the new pronouncement using one of two retrospective application 
methods. 

On July 9, 2015, the FASB voted to approve a deferral of the effective date of ASU 2014-09 by one year to December 
15, 2017 for annual reporting periods beginning after that date. As of January 1, 2018, the Company has adopted the new 
revenue standard using the modified retrospective approach. The Company manufactures parts that have no alternative use 
to  the  Company  (since  the  parts  are  custom  made  to  specific  customer  orders),  and the  Company believes  for  certain 
customers there is a legally enforceable right to payment for performance completed to date on these manufactured parts. For 
those manufactured parts that meet these two criteria, the Company will recognize revenue over time. The expected transition 
adjustment to be recorded is an increase to the Company’s retained earnings balance on January 1, 2018 of $1.5 million. 

In February 2016, the FASB issued ASU 2016-02, Leases, which introduces the balance sheet recognition of lease 
assets and lease liabilities by lessees for those leases classified as operating leases under previous guidance. The guidance 
will be effective for annual reporting periods beginning after December 15, 2018 and interim periods within those fiscal years 
with  early  adoption  permitted.  The  Company  is  evaluating  the  impact  of  the  future  adoption  of  this  standard  on  its 
consolidated financial statements, but does not expect the impact to be material because the Company owns a majority of its 
buildings and significant assets.  

In August 2016, the FASB issued ASU 2016-15, Statement of Cash Flows, which is intended to reduce diversity in 
how companies present and classify certain cash receipts and cash payments in the statement of cash flows. This guidance 
will be effective for annual reporting periods beginning after December 15, 2017 and interim periods within those fiscal years 
with  early  adoption  permitted.  The  Company  is  evaluating  the  impact  of  the  future  adoption  of  this  guidance  on  its 
consolidated financial statements, but does not expect the impact to be material. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other, which is intended to simplify 
the subsequent measurement of goodwill. This guidance will be effective for impairment tests in fiscal years beginning after 
December 15, 2019 and interim periods within those fiscal years with early adoption permitted. The Company is evaluating 
the impact of future adoption of this guidance on its consolidated financial statements, but does not expect the impact to be 
material. 

Note 3 – Net Income Per Common Share 

Basic  net  income  per share  is  computed based on  the weighted  average number of  common  shares outstanding. 
Diluted net income per share is computed based on the weighted average number of common shares outstanding, increased 
by the number of additional shares that would have been outstanding had the potentially dilutive common shares been issued 
and reduced by the number of shares the Company could have repurchased from the proceeds from issuance of the potentially 
dilutive shares. Potentially dilutive shares of common stock include stock options and other stock-based awards granted under 
stock-based compensation plans and shares committed to be purchased under the employee stock purchase plan. 

The  following  table  presents  the  calculation  of  net  income  per  basic  and  diluted  share  attributable  to  common 

shareholders: 

(in thousands, except share and per share amounts) 

2017 

Year Ended December 31, 
2016 

2015 

Net Income ...........................................................................   $ 

51,778    $ 

42,707    $ 

46,514  

Basic - weighted-average shares outstanding: ......................     
Effect of dilutive securities: 

Employee stock options, restricted stock and other ......     
Diluted - weighted-average shares outstanding: ...................     
Net income per share attributable to common shareholders:       
Basic ..............................................................................   $ 
Diluted ...........................................................................   $ 

26,647,610      

26,365,173      

26,005,858  

197,461      
26,845,071      

199,466      
26,564,639      

314,426  
26,320,284  

1.94    $ 
1.93    $ 

1.62    $ 
1.61    $ 

1.79  
1.77  

Note 4 – Business Combinations 

On November 30, 2017, the Company acquired Rapid Manufacturing Group, LLC (“RAPID”) for $121.8 million, 
consisting of $110.5 million in cash (net of cash acquired) and $11.3 million in the Company’s common stock. The operations 
of RAPID will be integrated into the operations of the Company.  

RAPID is a New Hampshire-based custom parts supplier specializing in quick-turn sheet metal fabrication and CNC 
machining. With the acquisition, the Company will be able to offer its customers another quick-turn manufacturing service 
while expanding its CNC machining capabilities.  

The acquisition has been accounted for under the acquisition method of accounting in accordance with ASC 805. 
The fair value of the consideration paid exceeded the fair value of the assets acquired and liabilities assumed, which resulted 
in goodwill of $99.6 million. The goodwill primarily relates to synergies resulting from the acquisition and is deductible for 
tax purposes over a 15-year period.  

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

The  RAPID amortizable  intangible  assets were  valued  as  of  the  acquisition  date  and  were  deemed  to  have a 
weighted-average useful life of 5.5 years. The customer relationships were valued at $7.5 million based on the Multi-Period 
Excess Earnings Method and are amortized over 6.0 years. The trade names were valued at $1.1 million based on the Relief-
from-Royalty Method and are amortized over 2.0 years. The non-competition agreement was valued at $0.1 million based on 
the Discounted Cash Flow method and will be amortized over 5 years. The allocation of the purchase price to assets acquired 
and liabilities assumed is as follows: 

(in thousands) 
Assets acquired: 
Current assets ..........................................................................................................................................   $ 
Goodwill ..................................................................................................................................................     
Other intangible assets.............................................................................................................................     
Other long-term assets .............................................................................................................................     
Total assets acquired ........................................................................................................................     

Liabilities assumed: 
Current liabilities .....................................................................................................................................     
Other long-term liabilities .......................................................................................................................     
Total liabilities assumed ...................................................................................................................     
Net assets acquired ...........................................................................................................................   $ 

Cash paid .................................................................................................................................................   $ 
Cash acquired ..........................................................................................................................................     
Net cash consideration .....................................................................................................................     
Equity portion of purchase price .............................................................................................................     
Total purchase consideration ...................................................................................................................   $ 

6,720  
99,588  
8,700  
9,013  
124,021  

2,067  
85  
2,152  
121,869  

115,288  
(4,755) 
110,533  
11,336  
121,869  

The following unaudited pro forma information represents the Company’s results of operations as if the fiscal 2017 
acquisition of RAPID had occurred at the beginning of fiscal 2016. These performance results may not be indicative of the 
actual results that would have occurred under the ownership and management of the Company. 

(in thousands) 
Revenue ...........................................................................................................   $ 
Net income ......................................................................................................     

(unaudited) 

386,677    $ 
55,070      

336,634  
41,805  

Year Ended December 31, 
2016 
2017 

The  unaudited  pro  forma  net  income  for  the  year  ended  December  31,  2017  excludes transaction  costs  of 
approximately $1.9 million and includes the increase in estimated depreciation expense of approximately $0.9 million and 
the increase in estimated amortization expense of approximately $3.0 million. The unaudited pro forma net income for the 
year ended December 31, 2016 includes the impact of new stock options and restricted stock units granted to employees of 
approximately $0.2 million in connection with the acquisition, an increase in estimated depreciation expense of approximately 
$0.6 million and the increase in estimated amortization expense of approximately $3.1 million. The pro forma net income for 
the years ended December 31, 2017 and 2016 include the related tax effects of the adjustments. The pro forma information 
has  been  prepared  for  comparative  purposes  only  and  includes  certain  adjustments,  as  noted  above.  The  adjustments  are 
estimates based on currently available information and actual amounts may differ materially from these estimates. They do 
not  reflect  the  effect  of  costs  or  synergies  that  would  have  been  expected  to  result  from  the  integration  of  the  RAPID 
acquisition. The pro forma information does not purport to be indicative of the results of operations that actually would have 
resulted  had  the  RAPID  acquisition  occurred  on  January  1,  2016.  The  Company’s  2017  Consolidated  Statements  of 
Comprehensive Income include $3.6 million of revenue and $0.7 million of net loss related to RAPID. The net loss was 
primarily driven by $1.1 million of bonus payments to RAPID employees as a result of the acquisition. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

On  October  1,  2015,  the  Company  acquired  certain assets  of  Alphaform  AG  (Alphaform)  through  insolvency 
proceedings administered through the Insolvency Court of Munich, Germany. Included in the acquisition were select assets 
of Alphaform AG and Alphaform Claho GmbH and shares of Alphaform RPI Oy and Alphaform Ltd., for $5.0 million net 
cash  consideration,  which  was  funded  with  cash  available  in  the  United  States  and  Europe.  As  of  December  2016,  the 
operations of Alphaform have been integrated into the operations of the Company.  

Alphaform was a leading service bureau headquartered in Feldkirchen (Munich), Germany and also had locations 
in Eschenlohe, Germany; Rusko, Finland and Reading, UK. Alphaform produces high-quality parts using stereolithography 
(SL),  selective  laser  sintering  (SLS)  and  direct  metal  laser  sintering  (DMLS)  technologies  as  well  as  injection  molding 
capabilities and other production processes. The revenue associated with these processes is reported under the 3D Printing, 
Injection Molding and Other product lines. In the second quarter of 2016, the Company made the decision to exit the resin 
resale business. 

The results of Alphaform since the date of acquisition and pro forma disclosures of the consolidated results of the 
Company  with  the  full-year  effects  of  Alphaform  have  not  been  separately  presented  since  the  impact  to  the  Company's 
results of operations was not material. 

The acquisition was accounted for under the acquisition method of accounting in accordance with ASC 805. Because 
Alphaform  was  insolvent,  the  fair  value  of  the  assets  purchased  and  liabilities  assumed  exceeded  the  fair  value  of 
consideration paid, which resulted in a bargain purchase gain of $0.3 million. The bargain purchase gain was recorded in 
Other Income, Net in the Consolidated Statement of Comprehensive Income for the year ended December 31, 2015. The final 
allocation of the purchase price to assets acquired and liabilities assumed is as follows: 

(in thousands) 
Assets acquired: 
Current assets ................................................................................................................................................................   $ 
Other long-term assets...................................................................................................................................................     
Total assets acquired .............................................................................................................................................     

Liabilities assumed: 
Current liabilities...........................................................................................................................................................     
Total liabilities assumed ........................................................................................................................................     
Net assets acquired ................................................................................................................................................   $ 

Cash paid .......................................................................................................................................................................   $ 
Cash acquired ................................................................................................................................................................     
Total purchase consideration .................................................................................................................................   $ 
Gain recognized on bargain purchase ...........................................................................................................................   $ 

2,766  
3,876  
6,642  

1,266  
1,266  
5,376  

5,570  
(538) 
5,032  
344  

Note 5 – Goodwill and Other Intangible Assets 

The changes in the carrying amount of goodwill for the years ended December 31, 2017 and 2016 were as follows: 

(in thousands) 

Goodwill 
acquired 
during 
2016 

Dec. 31, 
2015 

     2016 Other     

Dec. 31, 
2016 

Goodwill 
acquired  
during 
2017 

     2017 Other     

Dec. 31, 
2017 

United States ............................   $ 
Europe ......................................     
Other ........................................     
Total goodwill ..........................   $ 

28,916    $ 
-      
-      
28,916    $ 

-    $ 
-      
-      
-    $ 

(4,869)   $ 
4,239      
630      
-    $ 

24,047    $ 
4,239      
630      
28,916    $ 

99,588    $ 
-      
-      
99,588    $ 

-    $  123,635  
4,239  
-      
630  
-      
-    $  128,504  

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Effective in the fourth quarter of 2016, the Company changed its reportable segments to be based upon geographic 
regions, which also resulted in the revision of reporting units and the allocation of goodwill to the reportable segments. As 
described  in  Note  4  – Business  Combinations,  the  Company  acquired  RAPID  in  November  2017.  The  fair  value  of  the 
consideration paid exceeded the fair value of the assets acquired and liabilities assumed, which resulted in goodwill in the 
United States of $99.6 million. 

Intangible assets other than goodwill for the years ended December 31, 2017 and 2016 were as follows: 

   Year Ended December 31, 2017 

     Year Ended December 31, 2016 

   Gross      

Accumulated 
Amortization     Net 

     Gross      

Accumulated 
Amortization     Net 

Weighted  
Average    
Useful Life 
Remaining 
(in years)   

Useful 
Life  
(in years)     

(in thousands) 
Intangible Assets 

with finite lives: 
Marketing assets...   $
Non-compete 

agreement .........     
Trade secrets ........     
Trade names .........     
Internally 

developed 
software ............     

Software 

technology ........ 

Customer 

930    $ 

(341) $

589    $

930    $ 

(248) $

682      10.0 

270      
250      
1,080      

680      

8,229      

(190)   
(183)   
-     

80      
67      
1,080      

190      
250      
-      

(190) $
(133) $
-     

-     2.0 - 5.0       
5.0 
2.0 

117     
-     

(680)   

-      

680      

(604) $

76     

3.0 

-     

8,229      

-      

-     

-      10.0 

6.3 

5.0 
1.3 
2.0 

- 

10.0 

relationships .....      10,070      

(1,031)   

9,039      

2,530      

(750) $

1,780     6.0 - 9.0       

5.4 

Total intangible 

assets ....................   $ 21,509    $ 

(2,425) $ 19,084    $

4,580    $ 

(1,925) $

2,655       

Amortization expense for intangible assets was $0.5 million for the year ended December 31, 2017 and $0.7 million 

for each of the years ended December 31, 2016 and 2015, respectively. 

The Company acquired a software company in December 2017, which was accounted for as an asset acquisition and 
resulted in an $8.2 million software technology intangible asset for the year ended December 31, 2017. The acquisition did 
not meet the definition of a business under ASC 805. The asset acquisition included an additional $5.0 million in contingent 
consideration to be recognized and paid upon completion of certain milestones over a 24 month period. The completion of 
each milestone will result in additional value to the software technology intangible asset. We did not recognize any of the 
contingent consideration for the year ended December 31, 2017 as the contingency was not resolved. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Estimated aggregated amortization expense based on the current carrying value of the amortizable intangible assets 

is as follows: 

(in thousands) 
2018 ...............................................................................................................................................................   $ 
2019 ...............................................................................................................................................................     
2020 ...............................................................................................................................................................     
2021 ...............................................................................................................................................................     
2022 ...............................................................................................................................................................     
Thereafter ......................................................................................................................................................     
Total estimated amortization expense ...........................................................................................................   $ 

Estimated  
Amortization 
Expense 

3,060   
3,026   
2,470   
2,470   
2,470   
5,588   
19,084   

Note 6 – Fair Value Measurements 

ASC 820, Fair Value Measurement (ASC 820), defines fair value as the exchange price that would be received for 
an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in 
an orderly transaction between market participants on the measurement date. ASC 820 also establishes a fair value hierarchy 
which requires classification based on observable and unobservable inputs when measuring fair value. There are three levels 
of inputs that may be used to measure fair value: 

Level 1—Quoted prices in active markets for identical assets or liabilities. 

Level 2—Observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted 
prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market 
data for substantially the full term of the assets or liabilities. 

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair 
value of the assets or liabilities. 

The Company’s cash equivalents measured at fair value as of December 31, 2017 and 2016, respectively, consist of 

money market mutual funds. The Company determines the fair value of these financial assets using Level I inputs. 

The following tables summarizes financial assets as of December 31, 2017 and 2016 measured at fair value on a 

recurring basis: 

(in thousands) 

   Level 1 

December 31, 2017 
     Level 2 

     Level 3 

     Level 1 

December 31, 2016 
     Level 2 

     Level 3 

Financial Assets: 
Cash and cash equivalents       

Money market mutual 
funds ..........................    $ 
Total .............................    $ 

3,034    $ 
3,034    $ 

-    $ 
-    $ 

-    $ 
-    $ 

11,771    $ 
11,771    $ 

-    $ 
-    $ 

-  
-  

65 

 
 
  
  
  
  
  
  
  
  
    
    
 
 
  
  
  
  
  
  
  
  
  
    
  
  
  
  
    
  
  
  
      
        
        
        
        
        
  
      
        
        
        
        
        
  
        
        
        
        
        
  
  
    
       
       
       
       
       
   
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Note 7 – Marketable Securities 

The  Company  invests  in  short-term  and  long-term  agency,  municipal,  corporate  and  other  debt  securities.  The 
securities are categorized as held-to-maturity and are recorded at amortized cost. Categorization as held-to-maturity is based 
on the Company’s ability and intent to hold these securities to maturity. Information regarding the Company’s short-term and 
long-term marketable securities as of December 31, 2017 and 2016 is as follows: 

(in thousands) 

December 31, 2017 

Amortized  
Cost 

Unrealized  
Gains 

Unrealized  
Losses 

     Fair Value    

U.S. government agency securities ......................................   $ 
Corporate debt securities ......................................................     
U.S. municipal securities ......................................................     
Certificates of deposit/time deposits ....................................     
Total marketable securities ...................................................   $ 

32,320    $ 
29,806      
28,364      
3,968      
94,458    $ 

-    $ 
-      
-      
-      
-    $ 

(199)   $ 
(128)     
(104)     
(32)     
(463)   $ 

32,121   
29,678   
28,260   
3,936   
93,995   

(in thousands) 

December 31, 2016 

Amortized 
Cost 

Unrealized  
Gains 

Unrealized  
Losses 

     Fair Value    

U.S. government agency securities ......................................   $ 
Corporate debt securities ......................................................     
U.S. municipal securities ......................................................     
Certificates of deposit/time deposits ....................................     
Total marketable securities ...................................................   $ 

31,706    $ 
38,490      
46,578      
7,182      
123,956    $ 

1    $ 
2      
1      
12      
16    $ 

(141)   $ 
(147)     
(187)     
(22)     
(497)   $ 

31,566   
38,345   
46,392   
7,172   
123,475   

Fair values for the corporate debt securities are primarily determined based on quoted market prices (Level 1). Fair 
values  for  the  U.S.  municipal  securities,  U.S.  government  agency  securities  and  certificates  of  deposit  are  primarily 
determined using dealer quotes or quoted market prices for similar securities (Level 2). 

The Company tests for other than temporary losses on a quarterly basis and has considered the unrealized losses 
indicated above to be temporary in nature. The investment policy adopted by the Company dictates that only investments in 
quality, highly rated debt securities are permitted. Those unrealized losses displayed above are the result of macroeconomic 
factors and are indicative of neither the quality of the underlying security nor the issuer’s ability to pay its debt. The Company 
intends, and has the ability, to hold the investments to maturity and recover the full principal. 

Classification of marketable securities as current or non-current is based upon the security’s maturity date as of the 

date of these financial statements. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

The December 31, 2017 balance of held-to-maturity debt securities by contractual maturity is shown in the following 
table at amortized cost. Actual maturities may differ from contractual maturities because the issuers of the securities may 
have the right to prepay obligations without prepayment penalties. 

(in thousands) 

   December 31,    
2017 

Due in one year or less ................................................................................................................................   $ 
Due after one year through five years .........................................................................................................     
Total marketable securities ..........................................................................................................................   $ 

57,424  
37,034  
94,458  

Note 8 – Property and Equipment 

Property and equipment consists of the following: 

(in thousands) 

December 31,  

2017 

2016 

Land.............................................................................................................................    $
Buildings and improvements .......................................................................................      
Machinery and equipment ...........................................................................................      
Computer hardware and software ................................................................................      
Leasehold improvements .............................................................................................      
Construction in progress ..............................................................................................      
Total ............................................................................................................................      
Accumulated depreciation and amortization ...............................................................      
Property and equipment, net ........................................................................................    $

8,910    $
49,921      
148,535      
17,634      
6,634      
8,988      
240,622      
(74,182)     
166,440    $

8,805  
48,467  
114,729  
15,053  
6,688  
3,491  
197,233  
(57,759) 
139,474  

Depreciation expense for the years ended December 31, 2017, 2016 and 2015 was $18.0 million, $16.8 million and 

$13.4 million, respectively. 

Note 9 – Inventory 

Inventory consists primarily of raw materials, which are recorded at the lower of cost or market using the average-
cost method, which approximates first-in, first-out (FIFO) cost. The Company periodically reviews its inventory for slow-
moving,  damaged  and  discontinued  items  and  provides  allowances  to  reduce  such  items  identified  to  their  recoverable 
amounts. 

The Company’s inventory consists of the following: 

(in thousands) 

December 31,  

2017 

2016 

Raw materials ..............................................................................................................    $
Work in progress .........................................................................................................      
Total inventory ............................................................................................................      
Allowance for obsolescence ........................................................................................      
Inventory, net of allowance .........................................................................................    $

9,767    $
1,998      
11,765      
(494)     
11,271    $

8,057  
1,531  
9,588  
(278) 
9,310  

67 

 
  
  
  
  
  
  
  
  
  
  
      
  
  
    
   
  
  
  
  
  
  
  
  
  
  
  
    
  
  
      
        
  
  
    
       
   
  
  
  
  
  
  
  
  
  
  
  
  
  
    
  
  
      
        
  
  
    
       
   
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Note 10 – Financing Obligations 

The Company’s debt consists of the following:  

(in thousands) 

December 31,  

2017 

2016 

Revolving Credit Facility, with interest rates from 2.50% to 2.56%, due at maturity 

in November 2019 ...................................................................................................    $ 
Total Financing Obligations ........................................................................................    $ 

5,000    $ 
5,000    $ 

-  
-  

The  Company  entered  into  a  Credit  Agreement  (the  “Credit  Agreement”)  with  Wells  Fargo  Bank,  National 
Association, as lender on November 27, 2017. The Credit Agreement provides the Company with a committed $30 million 
unsecured revolving credit facility (the “Facility”), which includes a $5 million letter of credit sub-facility. The commitments 
under the Facility will expire on November 30, 2019, and any loans outstanding on such date will mature and be payable on 
such date. The Company’s obligations under the Credit Agreement are guaranteed by the Company’s domestic subsidiaries. 
Loans under the Facility bear interest at a rate per annum equal to, at the election of the Company, either (i) a fluctuating rate 
per annum equal to daily one month LIBOR plus 1%, or (ii) a fixed rate per annum equal to LIBOR for an interest period of 
one, two or six months (as designated by the Company) plus 1%. In addition, the Company will pay a commitment fee on the 
average daily unused amount of the Facility at a rate per annum equal to 0.15%.  

Note 11 – Employee Benefit Plans 

The Company maintains a 401(k) retirement plan that covers employees in the United States. Under the plan, a full-
time or regular part-time (over 20 hours/week) employee becomes a participant after completing three months of employment. 
Employees may elect to contribute up to 50 percent of regular gross pay, subject to federal law limits on the dollar amount 
that participants may contribute to the plan, each calendar year. The Company matches part of the employee contributions 
and may make a discretionary contribution to the plan. Total employer contributions were approximately $1.9 million, $1.6 
million and $1.2 million for the years ended December 31, 2017, 2016 and 2015, respectively. 

The Company also sponsors a defined contribution retirement plan that covers the employees in the United Kingdom. 
Total employer contributions were approximately $0.3 million, $0.2 million and $0.2 million for the years ended December 
31, 2017, 2016 and 2015, respectively. 

Note 12 – Stock-Based Compensation 

The Company has two equity incentive plans: the 2000 Stock Option Plan (2000 Plan) and the 2012 Long-Term 
Incentive Plan (2012 Plan). Upon the adoption of the 2012 Plan on February 21, 2012, all shares that were reserved but not 
issued under the 2000 Plan were assumed by the 2012 Plan. No additional shares will be issued under the 2000 Plan. Under 
the  2012  Plan,  the  Company  has  the  ability  to  grant  stock  options,  stock  appreciation  rights  (SARs),  restricted  stock, 
performance stock, stock units, other stock-based awards and cash incentive awards. Awards under the 2012 Plan have a 
maximum term of ten years from the date of grant. The compensation committee of the board of directors may provide that 
the vesting or payment of any award will be subject to the attainment of specified performance measures in addition to the 
satisfaction of any continued service requirements, and the compensation committee will determine whether such measures 
have been achieved. The per share exercise price of stock options and SARs granted under the 2012 Plan generally may not 
be less than the fair market value of a share of our common stock on the date of the grant. Restricted stock is valued at fair 
market value on the date of grant. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

The  Company’s  2012  Employee  Stock  Purchase  Plan  (ESPP)  allows  eligible  employees  to  purchase  a  variable 
number of shares of the Company’s common stock at a discount through payroll deductions of up to 15 percent of their 
eligible compensation, subject to plan limitations. The ESPP provides for six-month offering periods with a single purchase 
period, and at the end of each offering period, employees are able to purchase shares at 85 percent of the lower of the fair 
market value of the Company’s common stock on the first trading day of the offering period or on the last trading day of the 
offering period. The Company determines the fair value stock-based compensation related to its ESPP in accordance with 
ASC 718 using the component measurement approach and the Black-Scholes standard option pricing model. 

Employees purchased 41,307 and 40,279 shares of common stock under the ESPP at an average exercise price of 
$48.91 and $48.38 during 2017 and 2016, respectively. As of December 31, 2017, 1,244,007 shares remained available for 
future issuance under the ESPP. 

The  Company  determines  its  stock-based  compensation  in  accordance  with  ASC  718,  which  requires  the 
measurement and recognition of compensation expense for all share-based payment awards made to employees and non-
employee directors based on fair value. 

Determining the appropriate fair value model and calculating the fair value of stock option grants requires the input 
of subjective assumptions. The Company uses the Black-Scholes option pricing model to value its stock option awards. Stock-
based compensation expense is calculated using the Company’s best estimates, which involve inherent uncertainties and the 
application of management’s judgment. Significant estimates include its expected term, stock price volatility and forfeiture 
rates. 

The expected term of stock options is estimated from the vesting period of the award and represents the weighted 
average period that the Company's stock options are expected to be outstanding. The Company estimates the volatility of its 
stock price based on the historic volatility of its common stock. The Company bases the risk-free interest rate that it uses in 
the Black-Scholes option pricing model on U.S. Treasury instruments with maturities similar to the expected term of the 
award being valued. The Company has never paid and does not anticipate paying, any cash dividends in the foreseeable future 
and, therefore, the Company uses an expected dividend yield of zero in the option pricing model. The Company accounts for 
forfeitures as they occur. The Company allocates stock-based compensation expense on a straight-line basis over the requisite 
service period. 

The following table summarizes stock-based compensation expense for the years ended December 31, 2017, 2016 

and 2015, respectively: 

(in thousands) 

2017 

Year Ended December 31, 
2016 

2015 

Stock options, restricted stock and other ...........................   $ 
Employee stock purchase plan ..........................................     
Total stock-based compensation expense ..........................   $ 

7,954    $ 
604      
8,558    $ 

6,177    $ 
598      
6,775    $ 

Cost of revenue ..................................................................   $ 
Operating expenses: 

Marketing and sales ....................................................     
Research and development .........................................     
General and administrative .........................................     
Total stock-based compensation expense ..........................   $ 

970    $ 

691    $ 

1,429      
1,091      
5,068      
8,558    $ 

977      
1,396      
3,711      
6,775    $ 

5,580  
502  
6,082  

513  

1,074  
1,285  
3,210  
6,082  

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Stock Options 

The following table provides the assumptions used in the Black-Scholes option pricing model for the years ended 

December 31, 2017, 2016 and 2015: 

2017 

Year Ended December 31, 
2016 

2015 

Risk-free interest rate .....................................................    
Expected life (years) .......................................................    
Expected volatility ..........................................................     42.68 - 44.68% 
Expected dividend yield .................................................    
Weighted average grant date fair value ..........................    

2.24 - 2.36% 
6.50 

0% 
$32.26 

1.53 - 2.68% 
6.50 

1.69 - 1.77% 
5.50 - 6.50 

       44.38 - 45.93% 

       46.80 - 47.23% 

0% 
$26.61 

0% 
$32.42 

The following table summarizes stock option activity and the weighted average exercise price for the years ended 

December 31, 2017, 2016 and 2015: 

     Weighted- 
     Average 

   Stock Options      Exercise Price   

Options outstanding at January 1, 2015 ..........................................................................     
Granted ........................................................................................................................     
Exercised .....................................................................................................................     
Cancelled .....................................................................................................................     
Options outstanding at December 31, 2015 .....................................................................     
Granted ........................................................................................................................     
Exercised .....................................................................................................................     
Cancelled .....................................................................................................................     
Options outstanding at December 31, 2016 .....................................................................     
Granted ........................................................................................................................     
Exercised .....................................................................................................................     
Cancelled .....................................................................................................................     
Options outstanding at December 31, 2017 .....................................................................     

998,987    $ 
110,335      
(316,761)     
(26,519)     
766,042      
117,480      
(226,164)     
(87,719)     
569,639      
60,100      
(187,313)     
(43,371)     
399,055    $ 

26.49   
67.36   
14.36   
51.72   
36.52   
57.99   
16.65   
61.41   
45.00   
69.06   
35.93   
61.02   
51.13   

Exercisable at December 31, 2017 ..................................................................................     

239,482    $ 

42.08   

The outstanding options have a term of 10 years. For employees, options that have been granted become exercisable 
ratably over the vesting period, which is generally a five-year period, beginning on the first anniversary of the grant date, 
subject to the employee’s continuing service to the Company. For directors, options generally become exercisable in full on 
the first anniversary of the grant date. 

The total intrinsic value of options exercised during the years ended December 31, 2017, 2016 and 2015, was $7.0 
million, $11.1 million and $18.6 million, respectively. The aggregate intrinsic value represents the cumulative difference 
between the fair market value of the underlying common stock and the option exercise prices. 

For options outstanding at December 31, 2017, the weighted-average remaining contractual term was 5.2 years and 
the  aggregate  intrinsic  value  was  $20.7  million.  For  options  exercisable  at  December  31,  2017,  the  weighted-average 
remaining contractual term was 3.2 years and the aggregate intrinsic value was $14.6 million. Refer to the table below for 
additional information. 

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

The following table summarizes information about stock options outstanding at December 31, 2017: 

Options Outstanding, Vested and 
Expected to Vest 

   Options Exercisable   

Range of  
Exercise Prices 

Number  
Outstanding   

Weighted 
Average 
Remaining  
Contractual 
Life 

Weighted 
Average  
Exercise 
Price ($)   

Number  
Exercisable   

Weighted 
Average  
Exercise 
Price ($)   

$3.67 to $7.85 ....................................................................    
$7.86 ..................................................................................    
$7.87 to $31.43 ..................................................................    
$31.44 to $47.15 ................................................................    
$47.16 to $66.87 ................................................................    
$66.88 to $96.20 ................................................................    

6,000    
53,100    
47,788    
7,816    
179,032    
105,319    

1.33 
1.44 
4.03 
1.76 
6.23 
6.29 

  $ 

5.56    
7.86    
26.68    
47.08    
58.35    
74.69    

6,000  $ 
53,100    
47,788    
5,390    
78,874    
48,330    

5.56 
7.86 
26.68 
47.08 
58.83 
71.57 

The fair value of share-based payment transactions is recognized in the consolidated statements of comprehensive 
income. As of December 31, 2017, there was $3.8 million of total unrecognized compensation cost related to unvested stock 
options, which is expected to be recognized over a weighted average period of 3.3 years. The total fair value of options vested 
was $2.8 million, $3.6 million and $2.8 million for the years ended December 31, 2017, 2016 and 2015, respectively. 

Restricted Stock 

The 2012 Plan provides for the award of restricted stock or restricted stock units. Restricted stock awards are share 
settled and restrictions lapse ratably over the vesting period, which is generally a five-year period, beginning on the first 
anniversary  of  the  grant  date,  subject  to  the  employee’s  continuing  service  to  the  Company.  For  directors,  restrictions 
generally lapse in full on the first anniversary of the grant date. 

The following table summarizes restricted stock activity for the years ended December 31, 2017, 2016 and 2015:  

     Weighted- 
     Average 
     Grant Date 
   Restricted 
     Fair Value 
   Stock Awards      Per Share 

Restricted stock at January 1, 2015 .................................................................................     
Granted ........................................................................................................................     
Restrictions lapsed .......................................................................................................     
Forfeited .......................................................................................................................     
Restricted stock at December 31, 2015 ...........................................................................     
Granted ........................................................................................................................     
Restrictions lapsed .......................................................................................................     
Forfeited .......................................................................................................................     
Restricted stock at December 31, 2016 ...........................................................................     
Granted ........................................................................................................................     
Restrictions lapsed .......................................................................................................     
Forfeited .......................................................................................................................     
Restricted stock at December 31, 2017 ...........................................................................     

76,574    $ 
68,580      
(16,863)     
(3,898)     
124,393      
161,555      
(41,415)     
(29,428)     
215,105      
210,744      
(60,102)     
(30,916)     
334,831    $ 

69.27   
68.89   
69.25   
72.14   
68.97   
59.37   
67.78   
63.23   
62.78   
63.70   
63.60   
61.99   
63.29   

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Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

As of December 31, 2017, there was $17.5 million of unrecognized compensation expense related to non-vested 

restricted stock, which is expected to be recognized over a weighted-average period of 3.8 years. 

Performance Stock 

Performance  Stock  Units  (PSUs)  are  expressed  in  terms  of  a  target  number  of  PSUs,  with  anywhere  between  0 
percent and 150 percent of that target number capable of being earned and vesting at the end of a three-year performance 
period  depending  on  the  Company’s  performance  in  the  final  year  of  the  performance  period  and  the  award  recipient’s 
continued employment.  

The following table summarizes performance stock activity for the years ended December 31, 2017, 2016 and 2015:  

     Weighted- 
Average 

     Grant Date 
   Performance       Fair Value 
   Stock Awards      
Per Share 

Performance stock at January 1, 2015 .........................................................................      
Granted ....................................................................................................................      
Restrictions lapsed ...................................................................................................      
Forfeited ...................................................................................................................      
Performance stock at December 31, 2015 ...................................................................      
Granted ....................................................................................................................      
Restrictions lapsed ...................................................................................................      
Forfeited ...................................................................................................................      
Performance stock at December 31, 2016 ...................................................................      
Granted ....................................................................................................................      
Restrictions lapsed ...................................................................................................      
Forfeited ...................................................................................................................      
Performance stock at December 31, 2017 ...................................................................      

-    $ 
-      
-      
-      
-      
-      
-      
-      
-      
25,707      
-      
-      
25,707    $ 

-  
-  
-  
-  
-  
-  
-  
-  
-  
58.35  
-  
-  
58.35  

As  of  December  31,  2017,  there  was  $1.1  million  of  unrecognized  compensation  expense  related  to  non-vested 

performance stock, which is expected to be recognized over a weighted-average period of 2.1 years. 

Employee Stock Purchase Plan 

The following table presents the assumptions used to estimate the fair value of the ESPP during the years ended 

December 31, 2017, 2016 and 2015: 

2017 

Year ended December 31, 
2016 

2015 

Risk-free interest rate ....................................................     
Expected life (months) ..................................................     
Expected volatility .........................................................     
Expected dividend yield ................................................     

0.97 - 1.48% 
6.00 

0.56 - 0.59% 
6.00 

0.08 - 0.39% 
6.00 

24.49 - 34.51%         39.51 - 49.13% 

       29.41 - 37.64% 

0% 

0% 

0% 

72 

 
 
 
  
  
  
  
    
  
    
  
  
  
    
  
  
  
    
  
    
  
  
    
  
  
  
  
  
  
  
      
        
  
  
    
       
   
  
  
  
  
  
  
  
  
  
  
  
  
  
    
    
  
  
      
       
       
  
      
      
  
      
      
  
  
      
      
  
  
       
        
        
  
  
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Note 13 – Commitments 

The Company leases property from third parties. The Company leases three of its U.S. facilities with terms expiring 
at various times from 2018 to 2022. The Company also leases office space in the United Kingdom, France, Germany and 
Italy with terms expiring at various times from 2018 to 2023. The Company leases an office and manufacturing space in 
Japan, and the initial term expires in April 2023. The Company also leases office and manufacturing space in Germany and 
Finland with terms expiring at various times from 2018 to 2022. 

Future minimum commitments under non-cancelable leases at December 31, 2017, are as follows: 

(in thousands) 
Years Ending December 31, 
2018 ...........................................................................................................................................................   $ 
2019 ...........................................................................................................................................................     
2020 ...........................................................................................................................................................     
2021 ...........................................................................................................................................................     
2022 ...........................................................................................................................................................     
After 2022 .................................................................................................................................................     
Total future minimum lease payments ......................................................................................................   $ 

Operating 
Leases 

4,322   
2,508   
2,026   
1,975   
1,948   
186   
12,965   

Rental expense was approximately $3.0 million, $3.6 million and $1.4 million for the years ended December 31, 

2017, 2016 and 2015, respectively. 

The Company acquired a software company in December 2017, which was accounted for as an asset acquisition. 
The  asset  acquisition  included  an  additional $5.0  million  in  contingent  consideration  to  be  recognized  and  paid  upon 
completion of certain milestones over a 24-month period. The completion of each milestone will result in additional value to 
the  software  technology  intangible  asset.  We  did  not  recognize  any  of  the  contingent  consideration for  the  year  ended 
December 31, 2017 as the contingency was not resolved. 

Note 14 – Accumulated Other Comprehensive Loss 

Other comprehensive loss is comprised entirely of foreign currency translation adjustments. The following table 
presents the changes in accumulated other comprehensive loss balances for the years ending December 31, 2017, 2016 and 
2015, respectively: 

(in thousands) 

Year Ended December 31, 
2016 

2017 

2015 

Foreign currency translation adjustments ........................................        
Balance at beginning of period .................................................    $ 
Other comprehensive income (loss) before reclassifications      
Amounts reclassified from accumulated other 

comprehensive income (loss) ............................................      
Net current-period other comprehensive income (loss) ...........      
Balance at end of period ...........................................................    $ 

(10,753)   $ 
5,519      

(5,212)   $ 
(5,541)     

-      
5,519      
(5,234)   $ 

-      
(5,541)     
(10,753)   $ 

(2,929) 
(2,283) 

-  
(2,283) 
(5,212) 

73 

 
 
  
  
  
  
  
  
  
  
  
  
      
  
      
  
  
    
    
  
  
  
  
  
  
  
  
  
  
  
  
  
    
    
  
  
      
        
        
  
        
        
  
  
    
       
       
   
  
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Note 15 – Income Taxes 

The Company is subject to income tax in multiple jurisdictions and the use of estimates is required to determine the 
provision for income taxes. For the years ended December 31, 2017, 2016 and 2015, the Company recorded an income tax 
provision of $22.7 million, $21.5 million and $21.3 million, respectively. The effective income tax rate for the years ended 
December 31, 2017, 2016 and 2015 was 30.4 percent, 33.4 percent and 31.5 percent, respectively. 

The effective tax rate decreased by 3.0% for the year ended December 31, 2017 when compared to 2016 primarily 
due to the impact of tax reform. The Tax Cuts and Jobs Act (the "Act") was enacted on December 22, 2017. The Act reduces 
the U.S. federal corporate tax rate from 35% to 21%, requires companies to pay a transition tax on earnings of certain foreign 
subsidiaries that were previously tax deferred and creates new taxes on certain foreign sourced earnings. The reduction to the 
U.S. tax rate resulted in revaluing deferred tax liabilities which provided a tax benefit of $4.2 million. At December 31, 2017, 
we have not completed our accounting for the tax effects of the enactment of the Act. However, we have made a reasonable 
estimate  on  the  effects  of  the transition  tax  and  recognized  a  provisional  amount  of  $2.4  million  which  is  included  as  a 
component of income tax expense from continuing operations. The foreign tax effects of the transition tax is based on our 
total post-1986 earnings and profits (E&P) that we previously deferred from U.S. income taxes. We have not yet completed 
our calculation of the total post-1986 E&P. Furthermore, the transition tax is based in part on the amount of those earnings 
held in cash and other specified assets. This amount may change when we finalize the calculation of post-1986 foreign E&P 
previously deferred from U.S. federal taxation and finalize the amounts held in cash or other specified assets. No additional 
income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax or any 
additional outside basis difference inherent in these entities as these amounts continue to be indefinitely reinvested in foreign 
operations. 

The provision for income taxes is based on income before income taxes reported for financial statement purposes. 

The components of income before income taxes are as follows: 

(in thousands) 

Year Ended December 31, 
2016 

2015 

2017 

Domestic ......................................................................................   $ 
Foreign .........................................................................................     
Total .............................................................................................   $ 

69,929    $ 
4,506      
74,435    $ 

59,232    $ 
4,989      
64,221    $ 

59,421  
8,440  
67,861  

74 

 
 
  
  
  
  
  
  
  
  
  
  
  
  
    
    
  
  
      
        
        
  
  
    
       
       
   
 
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Significant components of the provision for income taxes for the following periods are as follows: 

(in thousands) 

Current: 

Year Ended December 31, 
2016 

2017 

2015 

Federal ................................................................................    $ 
State ....................................................................................      
Foreign ...............................................................................      

Deferred 

Federal ................................................................................      
State ....................................................................................      
Foreign ...............................................................................      
Valuation Allowance .................................................................      
Total ..........................................................................................    $ 

17,808    $ 
1,367      
2,215      

865      
193      
(1,918)     
2,127      
22,657    $ 

15,119    $ 
1,091      
2,439      

2,758      
75      
(1,960)     
1,992      
21,514    $ 

15,845  
1,074  
1,591  

2,798  
(38) 
294  
(217) 
21,347  

A reconciliation of the federal statutory income tax rate to the effective tax rate is as follows: 

Year Ended December 31, 
2016 

2015 

2017 

Federal tax statutory rate .............................................................     
State tax (net of federal benefit) ..................................................     
Qualified subsidiary election .......................................................     
Valuation allowance against deferred tax assets .........................     
Research and development credit ................................................     
Foreign rate differential ...............................................................     
Tax reserves ................................................................................     
Domestic manufacturing deduction .............................................     
Miscellaneous ..............................................................................     
Transition tax...............................................................................     
Revaluation of deferred tax liability ............................................     
Total ............................................................................................     

35.0%     
1.7       
(0.6)      
2.9       
(2.2)      
(1.9)      
0.9       
(2.5)      
(0.4)      
3.2       
(5.7)      
30.4%     

35.0%     
0.6       
(0.8)      
3.1       
(2.2)      
(2.8)      
1.4       
(1.8)      
0.9       
-       
-       
33.4%     

35.0% 
0.5  
0.6  
(0.3) 
(2.9) 
(1.8) 
1.5  
(1.4) 
0.3  
-  
-  
31.5% 

As a result of the Tax Cuts and Jobs Act enacted on December 22, 2017, we have recorded a transition tax and 
recognized a provisional amount of $2.4 million which is included as a component of our 2017 income tax expense from 
continuing operations. In addition, we recorded a tax benefit of $4.2 million in 2017 resulting from the revaluation of our net 
deferred tax liabilities utilizing the new U.S. federal corporate income tax rate. 

75 

 
  
  
  
  
  
  
  
  
  
  
    
    
  
  
      
        
        
  
      
        
        
  
      
        
        
  
  
    
       
       
   
  
  
  
  
  
  
  
  
  
  
  
     
     
  
  
      
         
         
  
  
    
        
        
   
  
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

Significant components of deferred tax assets and liabilities are as follows: 

(in thousands) 

Deferred tax assets: 

December 31, 

2017 

2016 

Accrued expenses .........................................................................................   $ 
Warrants and stock options ..........................................................................     
Intangibles ....................................................................................................     
Inventories ....................................................................................................     
Other assets ..................................................................................................     
Net operating loss .........................................................................................     
Less valuation allowance ......................................................................     
Total deferred tax assets ......................................................................................     
Deferred tax liabilities: 

Depreciation .................................................................................................     
Goodwill.......................................................................................................     
Total deferred tax liabilities ................................................................................     
Net deferred tax liability ......................................................................................   $ 

756    $ 
2,309      
429      
220      
625      
6,374      
(6,633)     
4,080      

(9,528)     
(1,518)     
(11,046)     
(6,966)   $ 

857  
3,226  
612  
169  
983  
4,333  
(4,559) 
5,621  

(10,860) 
(1,764) 
(12,624) 
(7,003) 

The Company has recorded no U.S. deferred taxes related to the undistributed earnings of its non-U.S. subsidiaries 
as  of  December 31,  2017.  Such  amounts  are  intended  to  be  reinvested  outside  of  the  United  States  indefinitely.  It  is  not 
practicable to estimate the amount of additional tax that might be payable on the foreign earnings. As of December 31, 2017, 
the Company had accumulated undistributed earnings in non-U.S. subsidiaries of $26.5 million. 

As of December 31, 2017, the Company had estimated net operating loss carry forwards of $21.9 million for tax 
purposes. The net operating losses relate to operations in Japan and Germany. Japan losses can be carried forward for ten 
years but are limited to 50 percent of taxable income. Germany net operating losses may be carried forward without any time 
limitations but are limited to €1 million, plus 50 percent of taxable income exceeding €1 million. Japan net operating losses 
begin to expire at various dates between 2018 and 2026. The Company’s Japan operations are taxed both by local authorities 
and in the U.S. Accordingly, a portion of Japan net operating losses has been recognized as a benefit in the U.S. 

The Company establishes valuation allowances for deferred tax assets when, after consideration of all positive and 
negative evidence, it is considered more-likely-than-not that a portion of the deferred tax assets will not be realized. The 
Company's valuation allowances of $6.6 million and $4.6 million at December 31, 2017 and 2016, respectively, reduce the 
carrying value of deferred tax assets associated with certain net operating loss carry forwards and other assets with insufficient 
positive evidence for recognition. The increase in the valuation allowance is primarily attributable to fluctuations in foreign 
currency and the net operating losses incurred in Japan and Germany in 2017. 

The Company files a U.S. federal income tax return and income tax returns in various states and foreign jurisdictions. 
With a few exceptions, the Company is no longer subject to U.S. federal, state, or foreign income tax examinations by tax 
authorities for years before 2013. 

The Company has liabilities related to unrecognized tax benefits totaling $4.2 million and $3.8 million at December 
31,  2017  and  2016,  respectively,  that  if  recognized  would  result  in  a  reduction  of  the  Company’s  effective  tax  rate.  The 
liabilities are classified as other long-term liabilities in the accompanying consolidated balance sheets. The Company does 
not anticipate that total unrecognized tax benefits will materially change in the next twelve months. The Company recognizes 
interest and penalties related to income tax matters in income tax expense and reports the liability in current or long-term 
income taxes payable as appropriate. Interest and penalties were immaterial for each of the years ended December 31, 2017, 
2016 and 2015.  

76 

 
  
  
  
  
  
  
  
  
  
  
    
  
  
      
        
  
      
        
  
      
        
  
  
    
       
   
  
   
  
  
  
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 

December 31, 

2017 

2016 

Balance at beginning of period ................................................................................   $ 
Additions for tax positions of current year ..............................................................     
Additions for tax positions of prior years ................................................................     
Decrease related to expiration of statutes of limitations ..........................................     
Balance at period end ..............................................................................................   $ 

3,796     $ 
831       
48       
(442 )     
4,233     $ 

2,769  
1,077  
170  
(220) 
3,796  

Note 16 – Litigation 

From time to time, the Company may be subject to various legal proceedings and claims that arise in the ordinary 
course of its business. Although the results of litigation and claims cannot be predicted with certainty, the Company does not 
believe it is a party to any litigation the outcome of which, if determined adversely, would individually or in the aggregate be 
reasonably expected to have a material adverse effect on its business. 

Note 17 – Segment Reporting 

The Company’s reportable segments are based on the internal reporting used by the Company’s CEO, who is the 
chief  operating  decision  maker  (CODM),  to  assess  operating  performance  and  make  decisions  about  the  allocation  of 
resources. The Company’s reportable segments are based upon geographic region, consisting of the United States and Europe. 
The Corporate Unallocated and Japan category includes non-reportable segments, as well as research and development and 
general and administrative costs that are global in nature and that the Company does not allocate directly to its operating 
segments.  

Revenue in the United States is derived from Injection Molding, CNC Machining, 3D Printing and Sheet Metal 
product lines. Revenue in Europe is derived from Injection Molding, CNC Machining, and 3D Printing product lines. Revenue 
in Japan is derived from Injection Molding and CNC Machining product lines. Injection Molding revenue consists of sales 
of custom injection molds and injection-molded parts. CNC Machining revenue consists of sales of CNC-machined customer 
parts. 3D Printing revenue consists of sales of 3D-printed parts. Sheet Metal revenue consists of sales of fabricated sheet 
metal parts. 

The  accounting  policies  of  the  reportable  segments  are  the  same  as  those  described  in Note  2 – Summary  of 
Significant  Accounting  Policies.  Intercompany  transactions  primarily  relate  to  intercontinental  activity  and  have  been 
eliminated and are excluded from the reported amounts. The difference between income from operations and pre-tax income 
relates  to  foreign  currency-related  gains  and  losses  and  interest  income  on  cash balances  and  investments, which are not 
allocated to business segments. 

Revenue and income from operations by reportable segment are as follows: 

(in thousands) 
Revenue: 

2017 

Year Ended December 31, 
2016 

2015 

United States ...................................................................   $
Europe .............................................................................     
Japan ...............................................................................     
Total revenue ...................................................................   $

263,086    $
70,154      
11,250      
344,490    $

223,930     $
63,365       
10,760       
298,055     $

208,018  
47,433  
8,655  
264,106  

77 

 
  
  
  
  
  
  
  
  
  
  
  
    
  
  
      
        
  
  
    
        
   
  
  
   
  
   
  
  
  
  
  
  
  
  
  
  
  
    
    
  
      
        
        
  
  
    
       
        
   
 
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

(in thousands) 
Income from Operations: 

2017 

Year Ended December 31, 
2016 

2015 

United States ..............................................................   $ 
Europe ........................................................................     
Corporate Unallocated and Japan ...............................     
Total income from operations ....................................   $ 

103,136    $ 
12,846      
(43,756)     
72,226    $ 

89,308    $ 
11,657      
(39,198)     
61,767    $ 

86,450  
13,304  
(32,605) 
67,149  

Total long-lived assets, expenditures for additions to long-lived assets and depreciation and amortization expense 

are as follows: 

(in thousands) 
Long-lived assets: 

   December 31, 

     December 31, 

     December 31, 

2017 

2016 

2015 

United States ..............................................................   $ 
Europe ........................................................................     
Japan ..........................................................................     
Total long-lived assets ................................................   $ 

125,308    $ 
33,691      
7,441      
166,440    $ 

108,650    $ 
23,199      
7,625      
139,474    $ 

98,633  
23,636  
3,206  
125,475  

(in thousands) 
Expenditures for additions to long-lived assets: 

2017 

Year Ended December 31, 
2016 

2015 

United States ..............................................................   $ 
Europe ........................................................................     
Japan ..........................................................................     
Total expenditures for additions to long-lived assets .   $ 

20,370    $ 
11,704      
561      
32,635    $ 

21,190    $ 
5,954      
6,472      
33,616    $ 

32,560  
10,396  
1,406  
44,362  

(in thousands) 
Depreciation and Amortization: 

2017 

Year Ended December 31, 
2016 

2015 

United States ..............................................................   $ 
Europe ........................................................................     
Japan ..........................................................................     
Total depreciation and amortization ...........................   $ 

13,267    $ 
4,174      
1,033      
18,474    $ 

12,533    $ 
3,386      
1,566      
17,485    $ 

11,596  
2,132  
398  
14,126  

78 

 
  
 
 
 
 
  
  
  
  
    
    
  
      
        
        
  
  
    
       
       
   
  
  
  
  
  
    
  
    
  
  
  
  
  
    
    
  
      
        
        
  
  
    
       
       
   
  
  
  
  
  
  
  
  
  
    
    
  
      
        
        
  
  
    
       
       
   
  
  
  
  
  
  
  
  
  
    
    
  
      
        
        
  
  
    
       
       
   
 
 
 
Proto Labs, Inc. 
Notes to Consolidated Financial Statements 

The Company’s revenue is derived primarily from its Injection Molding, CNC Machining, 3D Printing and Sheet 

Metal product lines. Total revenue by product lines is as follows: 

(in thousands) 

Revenue: 

2017 

Year Ended December 31, 
2016 

2015 

Injection Molding .........................................   $ 
CNC Machining ...........................................     
3D Printing ...................................................     
Sheet Metal ..................................................     
Other Product ...............................................     
Total revenue ...............................................   $ 

194,432    $ 
103,739      
43,329      
1,767      
1,223      
344,490    $ 

175,974    $ 
81,407      
37,847      
-      
2,827      
298,055    $ 

163,387  
74,368  
25,132  
-  
1,219  
264,106  

Note 18 – Subsequent Events 

None. 

79 

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

Not applicable. 

Item 9A. Controls and Procedures 

Evaluation of Disclosure Controls and Procedures 

Our  management,  with  the  participation  of  our  Chief  Executive  Officer  and  Chief  Financial  Officer,  has 
evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-
15(e) under the Securities Exchange Act of 1934 (Exchange Act)) as of the end of the period covered by this report. Based 
upon that evaluation, the Chief Executive Officer and Chief Financial Officer have concluded that, as of the end of the 
period covered by this Annual Report on Form 10-K, our disclosure controls and procedures were effective and provided 
reasonable  assurance  that  information  required  to  be  disclosed  by  us  in  the  reports  that  we  file  or  submit  under  the 
Exchange Act is recorded, processed, summarized and reported accurately and within the timeframes specified in the 
SEC’s rules and forms and accumulated and communicated to our management, including our Chief Executive Officer 
and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. 

Management’s Annual Report on Internal Control Over Financial Reporting 

The  Company’s  management  is  responsible  for  establishing  and  maintaining  an  adequate  system  of  internal 
control over financial reporting, as defined in the Exchange Act Rule 13a-15(f). Management conducted an assessment 
of  the  Company’s  internal  control  over  financial  reporting  based  on  the  framework  established  by  the  Committee  of 
Sponsoring Organizations of the Treadway Commission in Internal Control – Integrated Framework (2013 framework). 
Based on the assessment, management concluded that, as of December 31, 2017, the Company’s internal control over 
financial reporting is effective. The Company’s registered public accounting firm’s attestation report on the Company’s 
internal control over financial reporting is provided in Part II, Item 8 of this Annual Report on Form 10-K. 

Management  has  excluded  certain  elements  of  RAPID  from  its  assessment  of  internal  control  over  financial 
reporting as of December 31, 2017 given that the acquisition of RAPID was not consummated until November 2017. 
Subsequent to the acquisition, RAPID maintained its revenue, inventory and payroll systems and processing through the 
year ended December 31, 2017. Those elements of the acquired business’s internal control over financial reporting that 
were not fully integrated into the Company’s existing internal control over financial reporting during 2017 have been 
excluded from management’s assessment of the effectiveness of internal control over financial reporting. RAPID is a 
wholly-owned subsidiary of the Company; its combined total assets and total revenues excluded from our assessment 
represent approximately 3% and 1%, respectively, of the related consolidated financial statements amounts as of the year 
ended December 31, 2017. 

Changes in Internal Control over Financial Reporting 

There have been no changes in our internal control over financial reporting (as such term is defined in Rule 13a-
15(f) under the Exchange Act) during the period covered by this report that have materially affected, or are reasonably 
likely to materially affect, our internal control over financial reporting.  

Item 9B. Other Information 

None. 

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Item 10. Directors, Executive Officers and Corporate Governance 

PART III 

The  information required by this  item  with respect  to Item  401 relating  to  executive officers  is  contained  in 
Item 1 of this Annual Report on Form 10-K under the heading “Executive Officers of the Registrant” and with respect to 
other information relating to our directors will be set forth in our 2018 Proxy Statement under the caption “Proposal 1 — 
Election of Directors,” which will be filed no later than 120 days after the end of the fiscal year covered by this Annual 
Report on Form 10-K, and is incorporated herein by reference.  

The information required by this item under Item 405 of Regulation S-K is incorporated herein by reference to 
the section titled “Corporate Governance — Section 16(a) Beneficial Ownership Reporting Compliance” of our 2018 
Proxy Statement, which will be filed no later than 120 days after the end of the fiscal year covered by this Annual Report 
on  Form  10-K.  The  information  required  by  this  item  under  Items 407  (c)(3),  (d)(4)  and  (d)(5)  of  Regulation  S-K  is 
incorporated herein by reference to the section titled “Corporate Governance” of our 2015 Proxy Statement, which will 
be filed no later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K. 

We  have  adopted  a  Code  of  Ethics  and  Business  Conduct  that  applies  to  all  of  our  directors,  officers  and 
employees, including our principal executive officer and principal financial officer. The Code of Ethics and Business 
Conduct is available on our website at www.protolabs.com under the Investors Relations section. We plan to post to our 
website at the address described above any future amendments or waivers of our Code of Ethics and Business Conduct. 

Item 11. Executive Compensation 

Information  related  to  this  item  is  incorporated  herein  by  reference  to  the  sections  titled  “Compensation 
Discussion and Analysis,” “Corporate Governance — Compensation Committee Interlocks and Insider Participation,” 
and “Compensation Committee Report” of our 2018 Proxy Statement, which will be filed no later than 120 days after the 
end of the fiscal year covered by this Annual Report on Form 10-K. 

Item 12. Security Ownership of Certain Beneficial Owners and Management  

Information related to security ownership required by this item is incorporated herein by reference to the section 
titled “Security Ownership of Certain Beneficial Owners and Management” of our 2018 Proxy Statement, which will be 
filed no later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10-K. Information 
related to our equity compensation plans required by this item is incorporated herein by reference to the section titled 
“Compensation Discussion and Analysis – Information Regarding Equity-Based Compensation Plans” of our 2018 Proxy 
Statement, which will be filed no later than 120 days after the end of the fiscal year covered by this Annual Report on 
Form 10-K. 

Item 13. Certain Relationships and Related Transactions, and Director Independence 

Information  required  by  this  item  is  incorporated  herein  by  reference  to  the  sections  titled  “Corporate 
Governance  —  Certain  Relationships  and  Related  Party  Transactions,”  and  “Corporate  Governance  —  Director 
Independence” of our 2018 Proxy Statement, which will be filed no later than 120 days after the end of the fiscal year 
covered by this Annual Report on Form 10-K. 

Item 14. Principal Accountant Fees and Services 

Information  required  by  this  item  is  incorporated  herein  by  reference  to  the  section  titled  “Fees  Paid  to 
Independent Registered Public Accounting Firm” of our 2018 Proxy Statement, which will be filed no later than 120 days 
after the end of the fiscal year covered by this Annual Report on Form 10-K. 

81 

 
  
  
  
  
  
  
  
  
  
  
  
  
 
 
PART IV 

Item 15. Exhibits and Financial Statement Schedules 

(a) The following documents are filed as part of this report: 

1. Consolidated Financial Statements 

See Index to Consolidated Financial Statement at Item 8 herein. 

2. Financial Statement Schedules 

Schedules not listed above have been omitted because the information required to be set forth therein is 
not applicable or is shown in the financial statement or notes herein. 

3. Exhibits 

See the Exhibit Index immediately following the signature page of this Annual Report on Form 10-K. 

82 

 
  
  
  
  
  
  
  
  
 
 
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. 

SIGNATURE 

Date: February 23, 2018 

Date: February 23, 2018 

Proto Labs, Inc. 

/s/ Victoria M. Holt 

   Victoria M. Holt 

President and Chief Executive Officer 
(Principal Executive Officer) 

/s/ John A. Way 
John A. Way 
Chief Financial Officer 
(Principal Financial and Accounting Officer) 

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

following persons on behalf of the Registrant in the capacities and on the dates indicated. 

Date: February 23, 2018 

/s/ Victoria M. Holt 

   Victoria M. Holt 

Date: February 23, 2018 

President and Chief Executive Officer and 
Director 
(Principal Executive Officer) 

/s/ John A. Way 
John A Way 
Chief Financial Officer 
(Principal Financial and Accounting Officer) 

Chairman of the Board of Directors: 
Sven A. Wehrwein* 

Directors: 
Archie C. Black* 
Sujeet Chand* 
Rainer Gawlick* 
John B. Goodman* 
Donald G. Krantz* 

*Victoria M. Holt, by signing her name hereto, does hereby sign this document on behalf of each of the above 
named officers and directors of the registrant pursuant to powers of attorney duly executed by such persons and filed as 
an exhibit hereto. 

Date: February 23, 2018 

/s/ Victoria M. Holt 

   Victoria M. Holt 

President and Chief Executive Officer 
(Principal Executive Officer) 

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EXHIBIT INDEX    

Exhibit Number   
2.1(30) 

Description of Exhibit 
Membership Interest Purchase Agreement, dated November 16, 2017, by and among Proto Labs, Inc.,
Rapid Manufacturing Group, LLC and the members listed therein. (Certain schedules and exhibits have
been  omitted  in  accordance  with  Item  601(b)(2)  of  Regulation  S-K.  A  copy  of  any  omitted  schedule
and/or exhibit will be furnished to the Securities and Exchange Commission upon request.) 
 Third Amended and Restated Articles of Incorporation of Proto Labs, Inc. 
Articles of Amendment to Third Amended and Restated Articles of Incorporation of Proto Labs, Inc.
dated May 20, 2015 
 Second Amended and Restated By-Laws of Proto Labs, Inc, as amended through November 8, 2016. 
 Form of certificate representing common shares of Proto Labs, Inc. 
 2012 Long-Term Incentive Plan, as amended as of August 5, 2015 
 Form of Incentive Stock Option Agreement under 2012 Long-Term Incentive Plan 
 Form of Non-Statutory Stock Option Agreement (Directors) under 2012 Long-Term Incentive Plan 
Form  of  Non-Statutory  Stock  Option  Agreement  (U.S.  Employees)  under  2012  Long-Term  Incentive 
Plan 
Form of Non-Statutory Stock Option Agreement (U.K. Employees) under 2012 Long-Term Incentive 
Plan 
 Employee Stock Purchase Plan 
 Stock Subscription Warrant issued to John B. Tumelty 
 2000 Stock Option Plan, as amended 
 Form of Incentive Stock Option Agreement under 2000 Stock Option Plan 
 Form of Non-Statutory Stock Option Agreement (Directors) under 2000 Stock Option Plan 
 Form of Non-Statutory Stock Option Agreement (U.S. Employees) under 2000 Stock Option Plan 
 Form of Non-Statutory Stock Option Agreement (U.S. Employees) under 2000 Stock Option Plan 
 Form of Non-Statutory Stock Option Agreement (U.K. Employees) under 2000 Stock Option Plan 
Amended and Restated Credit Agreement, dated as of September 30, 2011, between Proto Labs, Inc. and
Wells Fargo Bank, N.A. 
Credit Agreement, dated November 27, 2017, by and among Proto Labs and Wells Fargo Bank, National
Association 
 Form of U.S. Severance Agreement 
 Form of UK Severance Agreement 
Executive Employment Agreement, dated February 6, 2014, by and between Proto Labs, Inc. and Victoria
M. Holt 
Form  of  Restricted  Stock  Agreement  under  2012  Long-Term  Incentive  Plan  for  the  initial  grant  to
Victoria M. Holt 
 Form of Restricted Stock Unit Agreement under 2012 Long-Term Incentive Plan (U.S. Employees) 
 Form of Restricted Stock Unit Agreement under 2012 Long-Term Incentive Plan (U.K. Employees) 
 Form of Restricted Stock Unit Agreement under 2012 Long-Term Incentive Plan (Directors) 
 Severance Agreement, dated December 18, 2014, by and between Proto Labs, Inc. and John A. Way 
 Form of Severance Agreement with Executive Officers 
 Form of Performance Stock Unit Agreement under 2012 Long-Term Incentive Plan 
 Subsidiaries of Proto Labs, Inc. 
 Consent of Ernst & Young LLP 
 Powers of Attorney 
 Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act 
 Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act 
Certification of the Chief Executive Officer and the Chief Financial Officer pursuant to Section 906 of
the Sarbanes-Oxley Act 
 XBRL Instance Document 
 XBRL Taxonomy Extension Schema Document 
 XBRL Taxonomy Extension Calculation Linkbase Document 
 XBRL Taxonomy Extension Definition Linkbase Document 
 XBRL Taxonomy Extension Label Linkbase Document 
 XBRL Taxonomy Extension Presentation Linkbase Document 

3.1(1) 
3.2(27) 

3.3(2) 
4.1(3) 
10.1(4)# 
10.2(5)# 
10.3(6)# 
10.4(7)# 

10.5(8)# 

10.6(9)# 
10.7(10) 
10.8(11)# 
10.9(12)# 
10.10(13)# 
10.11(14)# 
10.12(15)# 
10.13(16)# 
10.14(17)# 

10.15(18)# 

10.16(19)# 
10.17(20)# 
10.18(21)# 

10.19(22)# 

10.20(23)# 
10.21(24)# 
10.22(25)# 
10.23(26)# 
10.24(28)# 
10.25(29)# 
21.1 
23.1 
24.1 
31.1 
31.2 
32.1* 

101.INS** 
101.SCH** 
101.CAL** 
101.DEF** 
101.LAB** 
101.PRE** 

84 

 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
(1)  Incorporated by reference to Exhibit 3.2 to the Company’s Registration Statement on Form S-1/A (File No. 333-175745), 

filed with the Commission on February 13, 2012. 

(2)  Incorporated by reference to Exhibit 3.1 to the Company’s Form 8-K, filed with the Commission on November 8, 2016. 
(3)  Incorporated by reference to Exhibit 4.1 to the Company’s Registration Statement on Form S-1/A (File No. 333-175745), 

filed with the Commission on February 1, 2012. 

(4)  Incorporated by  reference  to Exhibit 10.1  to  the  Company’s  Form  10-Q,  filed with  the  Commission on November 3,

2015.  

(5)  Incorporated  by  reference  to  Exhibit  10.14  to  the  Company’s  Registration  Statement  on  Form  S-1/A  (File  No.  333-

175745), filed with the Commission on February 13, 2012.  

(6)  Incorporated  by  reference  to  Exhibit  10.15  to  the  Company’s  Registration  Statement  on  Form  S-1/A  (File  No.  333-

175745), filed with the Commission on February 13, 2012.  

(7)  Incorporated  by  reference  to  Exhibit  10.16  to  the  Company’s  Registration  Statement  on  Form  S-1/A  (File  No.  333-

175745), filed with the Commission on February 13, 2012.  

(8)  Incorporated  by  reference  to  Exhibit  10.17  to  the  Company’s  Registration  Statement  on  Form  S-1/A  (File  No.  333-

175745), filed with the Commission on February 13, 2012.  

(9)  Incorporated  by  reference  to  Exhibit  10.18  to  the  Company’s  Registration  Statement  on  Form  S-1/A  (File  No.  333-

175745), filed with the Commission on February 13, 2012. 

(10)  Incorporated by reference to Exhibit 99.7 to the Company’s Registration Statement on Form S-8 (File No. 333-179651), 

filed with the Commission on February 23, 2012. 

(11)  Incorporated by reference to Exhibit 10.7 to the Company’s Registration Statement on Form S-1 (File No. 333-175745), 

filed with the Commission on July 25, 2011.  

(12)  Incorporated by reference to Exhibit 10.8 to the Company’s Registration Statement on Form S-1 (File No. 333-175745), 

filed with the Commission on July 25, 2011. 

(13)  Incorporated by reference to Exhibit 10.9 to the Company’s Registration Statement on Form S-1 (File No. 333-175745), 

filed with the Commission on July 25, 2011. 

(14)  Incorporated by reference to Exhibit 10.10 to the Company’s Registration Statement on Form S-1 (File No. 333-175745), 

filed with the Commission on July 25, 2011. 

(15)  Incorporated by reference to Exhibit 10.11 to the Company’s Registration Statement on Form S-1 (File No. 333-175745), 

filed with the Commission on July 25, 2011. 

(16)  Incorporated by reference to Exhibit 10.12 to the Company’s Registration Statement on Form S-1 (File No. 333-175745), 

filed with the Commission on July 25, 2011. 

(17)  Incorporated  by  reference  to  Exhibit  10.19  to  the  Company’s  Registration  Statement  on  Form  S-1/A  (File  No.  333-

175745), filed with the Commission on October 26, 2011. 

(18)  Incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on December 1, 2017. 
(19)  Incorporated by reference to Exhibit 99.1 to the Company’s Form 8-K, filed with the Commission on March 1, 2013. 
(20)  Incorporated by reference to Exhibit 10.2 to the Company’s Form 10-Q, filed with the Commission on May 8, 2013. 
(21)  Incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on February 6, 2014. 
(22)  Incorporated by reference to Exhibit 10.2 to the Company’s Form 8-K, filed with the Commission on February 6, 2014. 
(23)  Incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on February 12, 2014.
(24)  Incorporated by reference to Exhibit 10.2 to the Company’s Form 8-K, filed with the Commission on February 12, 2014.
Incorporated by reference to Exhibit 99.6 to the Company's Registration Statement on Form S-8 (file No. 333-194272), 
filed with the Commission on March 3, 2014. 

(25) 

(26)  Incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on December 19, 2014.
(27)  Incorporated by reference to Exhibit 3.1 to the Company’s Form 8-K, filed with the Commission on May 21, 2015. 
(28)  Incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on April 6, 2015. 
(29)  Incorporated by reference to Exhibit 10.1 to the Company’s Form 8-K, filed with the Commission on February 17, 2017.
(30)  Incorporated by reference to Exhibit 2.1 to the Company’s Form 8-K, filed with the Commission on November 21, 2017.

# 

Indicates management contract or compensatory plan or arrangement. 

*  The certifications furnished in Exhibit 32.1 hereto are deemed to accompany this Annual Report on Form 10-K and will 
not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended. Such certifications 
will not be deemed to be incorporated by reference into any filings under the Securities Act of 1933, as amended, or the
Securities  Exchange  Act  of  1934,  as  amended,  except  to  the  extent  that  the  registrant  specifically  incorporates  it  by
reference. 

**  Users of this data are advised that, pursuant to Rule 406T of Regulation S-T, these interactive data files are deemed not
filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933 or 
Section 18 of the Securities Exchange Act of 1934 and otherwise are not subject to liability under these sections. 

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