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Monolithic Power Systems

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FY2013 Annual Report · Monolithic Power Systems
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2013 ANNUAL REPORT ON FORM 10-K

To Our Shareholders, Customers, Partners and Employees: 

Monolithic  Power  Systems  had  an  outstanding  year  in  2013  as  we  marked  our  tenth  year  as  a 
public company with record revenues and earnings. For the full year, revenue grew by 11 percent 
to  $238.1  million,  clearly  outperforming  the  two  percent  growth  rate  estimated  for  the  analog 
semiconductor industry by SIA.  This is further evidence that MPS is making excellent progress 
in  the  execution  of  our  revenue  diversification  and  growth  strategy  which  is  driven  by  new 
product offerings, design wins, and market share gains. In addition to our financial performance 
and strategic execution, MPS generated record cash flows allowing us to launch a $100 million 
stock  buyback  program  while  continuing  to  strengthen  our  balance  sheet  positioning  us  for 
continued  profitable  growth  in  2014.  Our  strong  financial  performance  has  led  to  a  significant 
increase in our market capitalization, which surpassed $1 billion in 2013 for the first time in our 
history. 

Financial Highlights 

For 2013, all key financial metrics – revenue, gross margin, non-GAAP EPS and, in particular, 
non-GAAP operating income – grew sharply over 2012. Gross margin expanded 80 basis points 
to 53.7 percent and non-GAAP operating income rose $8.7 million to $44.6 million in 2013. 

Our performance in 2013 and our track record of outperforming the peer group demonstrates the 
strength of our business model and the potential for growth in the years ahead, especially with 
many of our long-term drivers still in the early stages.  In terms of end markets, industrial led the 
way with organic growth of 33%. We saw strength across the board in industrial, driven by an 
improved demand environment, share gains and growth in newer markets like LED lighting and 
high power. Storage and computing grew 16%; communications increased 10%; and consumer 
was up 4%.   

New Products and Market Highlights 

After  two  years  of  development,  we  showcased  in  2013  “Quantum  State  Modulation,”  or 
QSMod,  a  new  DCDC  conversion  technology.    QSMod  allows  users  to  quantify  the  power 
output  and  the  time  duration  between  firing  each  phase  without  using  the  traditional  feedback 
loop.  Our solution has multiple benefits as it greatly improves the overall system efficiency. It is 
much simpler requiring minimal design effort and the output transient is significantly faster than 
our  competitors.    All  of  these  attributes  can  be  achieved  through  a  simple  software  interface, 
further demonstrating clear advantages over traditional methods of pulse width modulations. 

The  first  product  based  on  QSMod  technology  is the  MP2953,  a  six  phase  controller  targeting 
ultra high current applications such as server CPU core, DDR power and network systems. The 
built-in  current  sense  technique  with  extremely  high  accuracy  allows  the  CPUs  to  optimize 
power, deliver the best efficiency, and eliminate the need to overdesign DCDC converters setting 
a new standard for size and power conversion efficiency in the cloud computing and networking 
markets. 

 
 
 
 
 
 
 
 
 
Other exciting developments include: 

  Our  innovative  monolithic  power  modules  (MPM)  which  integrate  entire  systems  into 
one package.  These miniaturized modules based on BCD3 and BCD4 technologies have 
increased  power  density  which  shrinks  size,  increases  efficiency  and  lowers  overall 
solution costs. We already have multiple design wins for our power modules in industrial, 
storage and high-end consumer markets. As we continue to expand the family of plug and 
play modules to address a variety of applications, we expect to see steady revenue growth 
in 2014. 

 

 

 

In  industrial  and  automotive  markets,  our  growth  was  fueled  by  product  sales  for 
applications in security, power adaptors and smart meters. We have also seen significant 
design  win  activities  in  automotive  applications  in  USB,  rear  camera,  lighting  and  the 
chassis.  All these design win activities will continue to translate into revenue growth in 
2014. 

In storage and computing markets, we see tremendous new opportunities for growth with 
our propriety storage solutions. We believe 2014 will be another growth year driven by 
continued  end-market  adoption  of  SSDs  and  revenue  contribution  from  Grantley  in 
servers. 

In consumer markets, growth was largely fueled by higher sales into newer markets such 
as  LED  lighting  and  gaming  consoles  more  than  offsetting  declines  in  our  traditional 
consumer markets, in particular TVs. 

  Launched in 2012, our next generation BCD4 process technology represents as much as a 
50%  die  size  reduction  from  our  BCD3  technology.  In  2013,  the  BCD4  process 
technology is in production and promises to be the growth driver targeting  networking, 
servers and storage. Our point-of-load DCDC products and many of our power modules 
products are all designed on the BCD4 process technology.  

In  the  last  ten  years,  our  revenue  has  grown  organically  at  a  compound  annual  growth  rate  of 
20%.    As  we  look  ahead  and  extend  our  technology  leadership,  I  see  a  tremendous  amount  of 
opportunity for MPS to become a $500 million company in the long term.  I am excited about 
our  future  and  look  forward  to  continuing  to  build  shareholder  value,  strengthen  business 
relationships  with  our  customers  and  partners,  and  work  with  our  employees  to  develop 
innovative products in the next ten years and beyond. 

Michael R. Hsing 
President and Chief Executive Officer 

 
 
 
 
 
 
 
 
 
 
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, 2013  

or  

☐ 

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

Commission file number: 000-51026   

Monolithic Power Systems, Inc. 

(Exact name of registrant as specified in its charter)  

Delaware 
(State or other jurisdiction of incorporation or organization)

77-0466789 
(I.R.S. Employer Identification Number)

79 Great Oaks Boulevard, San Jose, CA 95119 (408) 826-0600 
(Address of principal executive offices, including zip code and telephone number)  

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

Title of each class 
Common Stock, $0.001 Par Value 

Name of each exchange on which registered 
The NASDAQ Global Select Market 

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 of 1933. ☐ 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 Securities Exchange Act of 1934 (the 

“Exchange 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  Exchange  Act  during  the 
preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 
90 days. Yes ☒ No ☐   

Indicate  by  check  mark  whether  the  registrant  has  submitted  electronically  and  posted  on  its  corporate  Web  site,  if  any,  every  Interactive  Data  File 
required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period 
that the registrant was required to submit and post such files). Yes ☒ No ☐  

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

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See 

the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. 
Large accelerated filer ☐          Accelerated filer ☒          Non-accelerated filer ☐          Smaller reporting company ☐  

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

The number of shares of the registrant’s stock outstanding as of June 30, 2013 was 37,336,120.  The closing price of the registrant’s common stock on 
the Nasdaq Global Select Market as of June 30, 2013 was $24.11.  The aggregate market value of the voting and non-voting common equity held by non-affiliates of 
the registrant based upon the closing price of the Common Stock on the Nasdaq Global Select Market on June 30, 2013 was $446,761,917.*  

There were 38,686,172 shares of the registrant’s common stock issued and outstanding as of March 3, 2014.   

DOCUMENTS INCORPORATED BY REFERENCE  

Portions of the registrant’s Proxy Statement for the registrant’s 2014 Annual Meeting of Stockholders are incorporated by reference into Part III of this 

Form 10-K to the extent stated herein.  The Proxy Statement will be filed within 120 days of the registrant’s fiscal year ended December 31, 2013.  

* 

Excludes 18,805,970 shares of the registrant’s common stock held by executive officers, directors and stockholders whose ownership exceeds 5% (“affiliates”) 
of the Common Stock outstanding at June 30, 2013.  Exclusion of such shares should not be construed to indicate that any such person possesses the power,
direct or indirect, to direct or cause the direction of the management or policies of the registrant or that such person is controlled by or under common control 
with the registrant. 

 
 
 
 
 
 
 
 
 
 
 
 
This page intentionally left blank

MONOLITHIC POWER SYSTEMS, INC. 
TABLE OF CONTENTS 

Page

PART I

Item 1. 

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

1 
Business .........................................................................................................................................................
6 
Executive Officers of the Registrant ..............................................................................................................
Risk Factors ...................................................................................................................................................
6 
Unresolved Staff Comments .......................................................................................................................... 22 
Properties ....................................................................................................................................................... 22 
Legal Proceedings ......................................................................................................................................... 22 
Mine Safety Disclosures ................................................................................................................................ 23 

PART II

Item 5. 

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

Securities ................................................................................................................................................... 24 
Selected Financial Data ................................................................................................................................. 26 
Item 6. 
Item 7. 
Management's Discussion and Analysis of Financial Condition and Results of Operations ......................... 26 
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk ....................................................................... 36 
Financial Statements and Supplementary Data ............................................................................................. 37 
Item 8. 
Item 9. 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure ........................ 66 
Item 9A.  Controls and Procedures ................................................................................................................................ 66 
Item 9B.  Other Information .......................................................................................................................................... 68 

PART III

Item 10.  Directors, Executive Officers and Corporate Governance ............................................................................ 69 
Executive Compensation ............................................................................................................................... 69 
Item 11. 
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ...... 69 
Item 12. 
Certain Relationships and Related Transactions, and Director Independence .............................................. 69 
Item 13. 
Principal Accounting Fees and Services ........................................................................................................ 69 
Item 14. 

Item 15. 

Exhibits and Financial Statement Schedules ................................................................................................. 70 
Signatures ...................................................................................................................................................... 75 

PART IV

Except as the context otherwise requires, the terms “Monolithic Power Systems”, “MPS”, “Registrant”, “Company”, 

“we”, “us”, or “our” as used herein are references to Monolithic Power Systems, Inc. and its consolidated subsidiaries. 

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FORWARD-LOOKING STATEMENTS 

This Annual Report on Form 10-K and the documents incorporated herein by reference contain forward-looking statements 
within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange 
Act  of  1934,  as  amended,  that  have  been  made  pursuant  to  and  in  reliance  on  the  provisions  of  the  Private  Securities 
Litigation Reform Act of 1995. These statements include among other things, statements concerning: 

• 

the above-average industry growth of product and market areas that we have targeted, 

    •  our  plan  to  introduce  additional  new  products  within  our  existing  product  families  as  well  as  in  new  product

categories and families, 

    •  our intention to exercise our purchase option with respect to our manufacturing facility in Chengdu, China, 

    •  our belief that we will continue to incur significant legal expenses that vary with the level of activity in each of our

legal proceedings, 

    • 

the  effect  of  auction-rate  securities  on  our  liquidity  and  capital  resources,  as  well  as  the  liquidity  of  our  other
investments, 

    • 

the  application  of  our  products  in  the  communications,  storage  and  computing,  consumer  and  industrial  markets
continuing to account for our revenue, 

    •  estimates of our future liquidity requirements, 

    • 

the cyclical nature of the semiconductor industry, 

    •  protection of our proprietary technology, 

    •  near term business outlook for 2014, 

    • 

the factors that we believe will impact our ability to achieve revenue growth, 

    • 

the outcome of the IRS audit of our tax returns, 

    • 

the percentage of our total revenue from various market segments, and 

    • 

the factors that differentiate us from our competitors. 

In some cases, words such as “would,” “could,” “may,” “should,” “predict,” “potential,” “targets,” “continue,” “anticipate,” 
“expect,” “intend,” “plan,” “believe,” “seek,” “estimate,” “project,” “forecast,” “will,” the negative of these terms or other 
variations of such terms and similar expressions relating to the future identify forward-looking statements.  

All forward-looking statements are based on our current outlook, expectations, estimates, projections, beliefs and plans or 
objectives about our business and our industry. These statements are not guarantees of future performance and are subject 
to risks and uncertainties. Actual events or results could differ materially and adversely from those expressed in any such 
forward-looking  statements.  Risks  and  uncertainties  that  could  cause  actual  results  to  differ  materially  include  those  set 
forth throughout this Annual Report on Form 10-K and, in particular, in Item 1A. “Risk Factors.” Except as required by 
law, we disclaim any duty to and undertake no obligation to update any forward-looking statements, whether as a result of 
new information relating to existing conditions, future events or otherwise or to release publicly the results of any future 
revisions we may make to forward-looking statements to reflect events or circumstances after the date hereof or to reflect 
the occurrence of unanticipated events. Readers are cautioned not to place undue reliance on such statements, which speak 
only as of the date of this Annual Report on Form 10-K. Readers should carefully review future reports and documents that 
we  file  from  time  to  time  with  the  Securities  and  Exchange  Commission,  such  as  our  Annual  Reports  on  Form  10-K, 
Quarterly Reports on Form 10-Q and any Current Reports on Form 8-K. 

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ITEM 1.    BUSINESS 

General 

PART I 

Monolithic Power Systems is a fabless semiconductor company that designs, develops and markets proprietary, advanced 
analog and mixed-signal semiconductors. We combine advanced process technology with our highly experienced analog 
designers to produce high-performance power management integrated circuits (ICs) for DC to DC converters and Lighting 
Control products. Our products are used extensively in computing and network communications products, flat panel TVs, 
set  top  boxes,  lighting  products  and  a  wide  variety  of  consumer  and  portable  electronics  products,  and  automotive  and 
industrial  markets.  We  partner  with  world-class  manufacturing  organizations  to  deliver  top  quality,  ultra-compact,  high-
performance  solutions  through  productive,  cost-efficient  channels.  Founded  in  1997  and  headquartered  in  San  Jose, 
California, we have expanded our global presence with offices in Taiwan, China, Korea and Japan, which operate under 
MPS International, Ltd. We have marketing representatives in Europe and Singapore. 

Industry Overview 

Semiconductors  comprise  the  basic  building  blocks  of  electronic  systems  and  equipment.  Within  the  semiconductor 
industry,  components  can  be  classified  either  as  discrete  devices,  such  as  individual  transistors,  or  as  ICs,  in  which  a 
number of transistors and other elements are combined to form a more complicated electronic circuit. ICs can be further 
divided  into  three  primary  categories:  digital,  analog,  and  mixed-signal.  Digital  ICs,  such  as  memory  devices  and 
microprocessors,  can  store  or  perform  arithmetic  functions  on  data  that  is  represented  by  a  series  of  ones  and  zeroes. 
Analog ICs, in contrast, handle real world signals such as temperature, pressure, light, sound, or speed. In addition, analog 
ICs also perform power management functions, such as regulating or converting voltages, for electronic devices. Mixed-
signal  ICs  combine  digital  and  analog  functions  onto  a  single  chip  and  play  an  important  role  in  bridging  real  world 
phenomena to digital systems. 

Analog and Mixed-Signal Markets.  We focus on the market for “high performance’ analog and mixed-signal ICs. “High 
performance’ products generally  are  differentiated  by functionality  and performance  factors which  include  integration of 
higher levels of functionality onto a single chip, greater precision, higher speed and lower heat and noise. There are several 
key  factors  that  distinguish  analog  and  mixed-signal  IC  markets,  and  in  particular  the  high  performance  portion  of  the 
analog  and  mixed  signal  IC  market,  from  digital  IC  markets.  These  factors  include  longer  product  life  cycles, numerous 
market segments, technology that is difficult to replicate, relative complexity of design and process technology, importance 
of  experienced  design  engineers,  lower  capital  requirements  and  diversity  of  end  markets.   We  have,  however,  targeted 
product and market areas that we believe have the ability to offer above average industry growth over the long term. 

Products and Applications 

We  currently  have  two  primary  product  families  that  address  multiple  applications  within  the  storage  and  computing, 
consumer electronics, communications, and industrial/automotive markets. Our products are differentiated with respect to 
their high degree of integration and strong levels of accuracy and efficiency, making them cost-effective relative to many 
competing solutions. These product families include: 

Direct  Current  (DC)  to  DC  Products.  DC  to  DC  ICs  are  used  to  convert  and  control  voltages  within  a  broad  range  of 
electronic  systems,  such  as  portable  electronic  devices,  wireless  LAN  access  points,  computers,  set  top  boxes,  TVs  and 
monitors,  automobiles  and  medical  equipment.  We  believe  that  our  DC  to  DC  products  are  differentiated  in  the  market, 
particularly with respect to their high degree of integration, high voltage operation, high load current, high switching speed 
and  small  footprint.  These  features  are  important  to  our  customers  as  they  result  in  fewer  components,  a  smaller  form 
factor,  more  accurate  regulation  of  voltages,  and,  ultimately,  lower  system  cost  and  increased  reliability  through  the 
elimination of many discrete components and power devices. 

Lighting  Control  Products  and  AC/DC  Offline  Solutions.  Lighting  control  ICs  are  used  in  backlighting  and  general 
illumination  products.  Lighting  control  ICs  for  backlighting  are  used  in  systems  that  provide  the  light  source  for  LCD 
panels typically found in notebook computers, LCD monitors, car navigation systems, and LCD televisions. Backlighting 
solutions  are  typically  either  white  light  emitting  diode  (WLED)  lighting  sources  or  cold  cathode  fluorescent  lamps 
(CCFL). WLED lighting control ICs step-up or step-down a DC voltage, or convert from an AC line voltage supplied by 
the utility company (also called AC/DC Offline) and provide efficient precision power and protection to a LED string or to 
multiple  LED strings.  The  CCFL  ICs function by  converting  low-voltage  direct  current  (DC)  or battery  voltage  to high-
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voltage  alternating  current  (AC).  We  believe  our  CCFL  ICs  were  the  first  to  utilize  a  full  bridge  resonant  topology  that 
allows for high efficiency, extended lifetimes for cold cathode fluorescent lamps (CCFLs), and lower signal interference 
with adjacent components. The full bridge topology is now the industry standard for these products. 

In  addition  to  AC/DC  offline  solutions  for  lighting  illumination  applications,  we  also  offer  AC/DC  power  conversion 
solutions for a diverse number of end products that plug into a wall outlet.  

We  currently  target  our  products  at  the  consumer  electronics,  communications,  storage  and  computing,  and  industrial 
markets, with the consumer market representing the largest portion of our revenue. 

The  following  is  a  brief  summary  of  our  product  family  for  various  applications.  For  each  of  these  applications,  we  are 
currently  shipping  products  or  have  design  wins,  which  are  decisions  by  original  equipment  manufacturers  (OEMs)  or 
original design manufacturers (ODMs) to use our ICs: 

WLED 
Lighting 
Illumination 
(non-
backlight) 

LCD 
Backlight 
(Inverters
or 
WLED)

DC to DC
Converters
(Buck & 
Boost)

Application 

µP Reset &
Supervisory

Audio 
Amplifiers

AC/DC 
Offline 

Chargers
(Switching
& Linear)

Current
Limit 
Switches

Storage and Computing 
Computers  
LCD Monitors 
Disk Drives/ Storage Networks     
Consumer Electronics 
LED TV Displays 
Plasma TV Displays 
Set Top Boxes 
Blu-Ray & DVD Players 
Digital Still Cameras 
Commercial & Industrial Bulb 
& CFL Replacement 
GPS and Infotainment systems 
Communications 
Cellular Handsets 
Networking Infrastructure 
VOIP 
Wireless Access Points 

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We  derive  a  majority  of  our  revenue  from  our  DC  to  DC  IC  product  family  sold  to  the  consumer  electronics, 
communications, storage and computing and industrial markets.  In the future, we will continue to introduce additional new 
products  within  our  existing  product  families,  such  as  high  current,  high  voltage,  small  form  factor  switching  voltage 
regulators, as well as expand our newer product families in battery chargers, voltage references and low dropout regulators. 
Our  ability  to  achieve  revenue  growth  will  depend  in  part  upon  our  ability  to  enter  new  market  segments,  gain  market 
share, grow in regions outside of Greater China, expand our customer base and successfully secure manufacturing capacity. 

Please refer to the table showing our revenue by product family in the section entitled “Item 7. Management’s Discussion 
and Analysis of Financial Condition and Results of Operations – Results of Operations”.  

Customers, Sales and Marketing 

We sell our products through third party distributors, value-added resellers and directly to OEMs, ODMs, and electronic 
manufacturing service (EMS) providers. Our third party distributors are subject to distribution agreements with us which 
allow the distributor to sell our products to end customers and other resellers.  Distributors may distribute our products to 
end customers which include OEMs, ODMs or EMS providers.  Our value-added resellers may second source our products 
and provide other services to customers. ODMs typically design and manufacture electronic products on behalf of OEMs, 
and EMS providers typically provide manufacturing services for OEMs and other electronic product suppliers.    

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As a result of consolidations in recent years among distributors, sales to our largest distributor accounted for approximately 
32%  of  revenue  in  2013,  32%  in  2012,  and  27%  in  2011.  In  addition,  one  other  distributor  accounted  for  10%  of  our 
revenue in 2013. No other customers accounted for more than 10% of revenue in any periods presented. 

Current  distribution  agreements  with  several  of  our  major  distributors  provide  that  each  distributor  shall  have  the  non-
exclusive right to sell and use its best efforts to promote and develop a market for our products. These agreements provide 
that  payment  for  purchases  from  us  will  generally  occur  within  30  to  45  days  from  the  date  of  invoice.  In  addition,  we 
allow for limited stock rotation in certain agreements. 

We have sales offices located in the United States, Taiwan, China, Korea and Japan and have marketing representatives in 
Europe and Singapore. Our products typically require a highly technical sales and applications engineering effort where we 
assist  our  customers  in  the  design  and  use  of  our  products  in  their  application.  We  maintain  a  staff  of  applications 
engineers who work directly with our customers’ engineers in the development of their systems electronics containing our 
products. 

Because our sales are billed and payable in United States dollars, our sales are not directly subject to fluctuating currency 
exchange rates. However, because a majority of our revenue is attributable to direct or indirect sales to customers in Asia, 
changes in the relative value of the dollar may create pricing pressures for our products. For the year ended December 31, 
2013, approximately 90% of our revenue was from customers in Asia. 

Our sales are made primarily pursuant to standard individual purchase orders. Our backlog consists of orders that we have 
received from customers which have not yet shipped. Our manufacturing lead times are generally 4 to 12 weeks and we 
often build inventory in advance of customer orders based on our forecast of future customer orders. This subjects us to 
certain risks, most notably the possibility that sales will not meet our forecast, which could lead to inventories in excess of 
demand. If excess inventory exists, it may be necessary for us to sell it at a substantial discount, take a significant write-
down or dispose of it altogether, either of which would negatively affect our profit margins. 

We operate in the cyclical semiconductor industry where there is seasonal demand for certain of our products. While we are 
not and will not be immune from current and future industry downturns, we have targeted product and market areas that we 
believe have the ability to offer above average industry performance over the long term. 

Research and Development 

We  have  assembled  a  qualified  team  of  engineers  in  the  United  States  and  China  with  core  competencies  in  analog  and 
mixed-signal  design.  Through  our  research  and  development  efforts,  we  have  developed  a  collection  of  intellectual 
property and know-how that we are able to leverage across our products and markets. These include the development of 
high  efficiency  power  devices,  the  design  of  precision  analog  circuits,  expertise  in  mixed-signal  integration  and  the 
development of proprietary semiconductor process technologies. 

Our  research  and  development  efforts  are  generally  targeted  at  three  areas:  systems  architecture,  circuit  design  and 
implementation,  and  process  technology.  In  the  area  of  systems  architecture,  we  are  exploring  new  ways  of  solving  our 
customers’  system  design  challenges  and  are  investing  in  the  development  of  systems  expertise  in  new  markets  and 
applications  that  align  well  with  our  core  capabilities.  In  the  area  of  circuit  design  and  implementation,  our  initiatives 
include expanding our portfolio of products and adding new features to our products. In the area of process technology, we 
are investing research and development resources to provide leading-edge analog power processes for our next generation 
of integrated circuits. Process technology is a key strategic component to our future growth.  

Our  research  and  development  expenses  totaled  $49.7  million,  $48.8  million  and  $44.5  million  for  the  years  ended 
December 31, 2013, 2012 and 2011, respectively.  

Patents and Intellectual Property Matters 

We  rely  on  our  proprietary  technologies,  which  include  both  our  proprietary  circuit  designs  for  our  products  and  our 
proprietary  manufacturing  process  technologies.  Our  future  success  and  competitive  position  depend  in  part  upon  our 
ability to obtain and maintain protection of our proprietary technologies. 

In general, we have elected to pursue patent protection for aspects of our circuit designs that we believe are patentable and 
to  protect  our  manufacturing  process  technologies  by  maintaining  those  process  technologies  as  trade  secrets.  As  of 
December 31, 2013, we had approximately 1,040 patents issued and pending, of which 170 have been issued in the United 
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States. Our issued patents are scheduled to expire at various times through December 2033. Our patents are material to our 
business, but we do not rely on any one particular patent for our success. We also rely on a combination of nondisclosure 
agreements  and  other  contractual  provisions,  as  well  as  our  employees’  commitment  to  confidentiality  and  loyalty,  to 
protect  our  technology,  know-how,  and  processes.  We  also  seek  to  register  certain  of  our  trademarks  as  we  deem 
appropriate. We have not registered any of our copyrights and do not believe registration of copyrights is material to our 
business. Despite precautions that we take, it may be possible for unauthorized third parties to copy aspects of our current 
or future technology or products or to obtain and use information that we regard as proprietary. There can be no assurance 
that  the  steps  we  take  will  be  adequate  to  protect  our  proprietary  rights,  that  our  patent  applications  will  lead  to  issued 
patents, that others will not develop or patent similar or superior products or technologies, or that our patents will not be 
challenged, invalidated, or circumvented by others. Furthermore, the laws of the countries in which our products are or may 
be developed, manufactured or sold may not protect our products and intellectual property rights to the same extent as laws 
in the United States. Our failure to adequately protect our proprietary technologies could harm our business. 

The semiconductor industry is characterized by frequent claims of infringement and litigation regarding patent and other 
intellectual  property  rights.  For  a  more  complete  description of  our  legal  matters,  please  read  the  section  entitled  Item  3 
“Legal Proceedings” and Note 10 to our consolidated financial statements. Patent infringement is an ongoing risk, in part 
because other companies in our industry could have patent rights that may not be identifiable when we initiate development 
efforts.  Litigation  may  be  necessary  to  enforce  our  intellectual  property  rights,  and  we  may  have  to  defend  ourselves 
against infringement claims. Any such litigation could be very costly and may divert our management resources. Further, 
we  have  agreed  to  indemnify  certain  of  our  customers  and  suppliers  in  some  circumstances  against  liability  from 
infringement by our products. In the event any third party were to make an infringement claim against us or our customers, 
we could be enjoined from selling selected products or could be required to indemnify our customers or suppliers or pay 
royalties or other damages to third parties. If any of our products is found to infringe and we are unable to obtain necessary 
licenses or other rights on acceptable terms, we would either have to change our product so that it does not infringe or stop 
making the infringing product, which could have a material adverse effect on our operating results, financial condition, and 
cash flows. 

Manufacturing 

We utilize a fabless business model, working with third parties to manufacture and assemble our integrated circuits. This 
fabless approach allows us to focus our engineering and design resources on our strengths and to reduce our fixed costs and 
capital expenditures. In contrast to many fabless semiconductor companies, who utilize standard process technologies and 
design  rules  established  by  their  foundry  partners,  we  have  developed  our  own  proprietary  process  technology  and 
collaborate with our foundry partners to install our technology on their equipment in their facilities for use solely on our 
behalf. This close collaboration and control over the manufacturing process has historically resulted in favorable yields and 
product performance for our integrated circuits. 

We currently contract with three suppliers to manufacture our wafers in foundries located in China. Once our silicon wafers 
have been produced, they are shipped to our facility in Chengdu, China for wafer sort. Our semiconductor products are then 
assembled and packaged by independent subcontractors in China and Malaysia. The assembled ICs are then sent for final 
testing primarily at our Chengdu facility prior to shipping to our customers. 

In  September  2004,  we  signed  an  agreement  with  a  Chinese  local  authority  to  construct  a  facility  in  Chengdu,  China, 
initially for the testing of our ICs. Pursuant to this agreement, we agreed to contribute capital in the form of cash, in-kind 
assets, and intellectual property, of at least $5.0 million to our wholly-owned Chinese subsidiary as the registered capital 
for the subsidiary and have exercised the option to purchase land use rights for the facility for approximately $0.2 million. 
Following the initial five-year lease term, we now have an option to acquire the facility in Chengdu for approximately $1.8 
million which consists of total construction costs incurred  minus total rent paid by us during the lease term. This option 
became exercisable in March 2011. We will likely exercise our purchase option and enter into a purchase agreement for 
this  facility  in  the  future.  The  facility  has  been  fully  operational  since  2006  and  we  have  benefitted  from  shorter 
manufacturing cycle times and lower labor and overhead costs. We have expanded our product testing capabilities in our 
China  facility  and  are  able  to  take  advantage  of  the  rich  pool  of  local  engineering  talent  to  expand  our  manufacturing 
support and engineering operations. We constructed a 150,000 square foot research and development facility in Chengdu, 
China which was put into operation in October 2010. 

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Key Personnel and Employees 

Our performance is substantially dependent on the performance of our executive officers and key employees. Due to the 
relative  complexity  of  the  design  of  our  analog  and  mixed-signal  ICs,  our  engineers  generally  have  more  years  of 
experience and greater circuit design aptitude than the more prevalent digital circuit design engineer. Analog engineers with 
advanced skills are limited in number and difficult to replace. The loss of the services of key officers, managers, engineers 
and other technical personnel would harm our business. Our future success will depend, in part, on our ability to attract, 
train, retain, and motivate highly qualified technical and managerial personnel.  We may not be successful in attracting and 
retaining such personnel. Our employees are not represented by a collective bargaining organization, and we have never 
experienced  a  work  stoppage  or  strike.  Our  management  considers  employee  relations  to  be  good.  As  of  December  31, 
2013, we employed 1,105 employees located in the United States, Taiwan, China, Japan, Korea, Europe and Singapore. 

Competition 

The  analog  and  mixed-signal  semiconductor  industry  is  highly  competitive,  and  we  expect  competitive  pressures  to 
continue. Our ability to compete effectively and to expand our business will depend on our ability to continue to recruit 
both applications engineering and design engineering personnel, our ability to introduce new products, and our ability to 
maintain the rate at which we introduce these new products. Our industry is characterized by decreasing unit selling prices 
over  the  life  of  a  product.  We  compete  with  domestic  and  international  semiconductor  companies,  many  of  which  have 
substantially  greater  financial  and  other  resources  with  which  to  pursue  engineering,  manufacturing,  marketing,  and 
distribution of their products. We are in direct and active competition, with respect to one or more of our product lines, with 
at  least  10  manufacturers  of  such  products,  of  varying  size  and  financial  strength.  The  number  of  our  competitors  has 
grown due to expansion of the market segments in which we participate. We consider our primary competitors to include 
Analog  Devices,  Fairchild  Semiconductor,  International  Rectifier,  Intersil  Corporation,  Linear  Technology,  Maxim 
Integrated  Products,  Micrel  Inc.,  Microchip  Technology,  Microsemi  Corporation,  O2Micro  International,  ON 
Semiconductor,  Richtek  Technology  Corporation,  Rohm  Co.,  Ltd.,  Semtech  Corporation,  STMicroelectronics  N.V., 
and Texas Instruments. 

We  expect  continued  competition  from  existing  competitors  as  well  as  competition  from  new  entrants  into  the 
semiconductor market. We believe that we are competitive in the markets in which we sell, particularly because our ICs 
typically are smaller in size, are highly integrated, possess higher levels of power management functionalities and achieve 
high performance specifications at lower price points than most of our competition. However, we cannot assure you that 
our products will continue to compete favorably or that we will be successful in the face of increasing competition from 
new products and enhancements introduced by existing competitors or new companies entering this market. 

Geographical and Segment Information 

Please  refer  to  the  geographical  and  segment  information  for  each  of  the  last  three  fiscal  years  in  Note  13  to  our 
consolidated financial statements. 

Please refer to the discussion of risks related to our foreign operations in the section entitled “Item 1A: Risk Factors”. 

Available Information 

We were incorporated in California in 1997 and reincorporated in Delaware in November 2004. Our executive offices are 
located at 79 Great Oaks Boulevard, San Jose CA 95119. Our telephone number is (408) 826-0600. Our e-mail address is 
investors@monolithicpower.com,  and  our  website  is  www.monolithicpower.com.  Our  Annual  Reports  on  Form  10-K, 
Quarterly  Reports  on  Form  10-Q,  current  reports  on  Form  8-K,  and  amendments  to  those  filed  or  furnished  pursuant  to 
Sections 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, are available free of charge. These may be 
obtained from our website as soon as reasonably practicable after we electronically file such material with, or furnish it to, 
the Securities and Exchange Commission, or at the SEC website at www.sec.gov. Information contained on our website is 
not a part of this Annual Report on Form 10-K. 

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Executive Officers of the Registrant 

Information regarding our executive officers as of February 28, 2014 is as follows: 

Name 

Michael R. Hsing 
Meera P. Rao 
Deming Xiao 
Maurice Sciammas 
Saria Tseng 

Age 
54 
President, Chief Executive Officer, and Director 
53  CFO and Principal Financial and Accounting Officer 
51 
54 
43  Vice President, Strategic Corporate Development, General Counsel and Corporate Secretary

President of Asia Operations 
Senior Vice President of Worldwide Sales and Marketing 

Position

Michael R. Hsing has served on our board of directors and has served as our President and Chief Executive Officer since 
founding  Monolithic  Power  Systems  in  August  1997.  Before  founding  our  company,  Mr.  Hsing  held  senior  technical 
positions at companies such as Supertex, Inc. and Micrel, Inc. Mr. Hsing is an inventor on numerous patents related to the 
process  development  of  bipolar  mixed-signal  semiconductor  manufacturing.  Mr.  Hsing  holds  a  B.S.E.E.  from  the 
University of Florida. 

Meera P. Rao has served as our Chief Financial Officer since January 2011. Ms. Rao joined us in January 2009 and served 
as  our  Vice  President  of  Finance  and  Corporate  Controller.  Prior  to  joining  MPS,  she  was  the  principal  in  her  own 
consulting  practice,  working  with  various  semiconductor  companies,  including  MPS,  where  she  set  up  our  business 
operations  in  Chengdu,  China  in  2006.  Ms.  Rao  has  more  than  20  years  of  experience  with  semiconductor  and  high 
technology  companies  and  has  held  various  senior  executive  positions,  including  CFO  of  Integration  Associates,  Vice 
President of Finance and Interim CFO at Atrica, Vice President of Finance at Raza Foundries, Corporate Controller and 
Interim CFO at nVIDIA, as well as various positions at Advanced Micro Devices.  Ms. Rao is a CPA and holds an MBA 
from the University of Rochester. 

Maurice Sciammas currently serves as our Senior Vice President of Worldwide Sales and Marketing, a position he has had 
since 2007. Mr. Sciammas joined the Company in July 1999 and served as Vice President of Products and Vice President 
of  Sales  (excluding  greater  China)  until  he  was  appointed  to  his  current  position.  Before  joining  the  Company,  he  was 
Director  of  IC  Products  at  Supertex  from  1990  to  1999.  He  has  also  held  positions  at  Micrel,  Inc.  He  holds  a  B.S.E.E. 
degree from San Jose State University. 

Deming Xiao has served as our President of Asia Operations since January 2008. Since joining us in May 2001, Mr. Xiao 
has held several executive positions, including Foundry Manager and Senior Vice President of Operations. Before joining 
us, from June 2000 to May 2001, Mr. Xiao was Engineering Account Manager at Chartered Semiconductor Manufacturing, 
Inc. Prior to that, Mr. Xiao spent 6 years as the Manager of Process Integration Engineering at Fairchild Imaging Sensors. 
Mr. Xiao holds a B.S. in Semiconductor Physics from Sichuan University, Chengdu, China and an M.S.E.E. from Wayne 
State University. 

Saria Tseng has served as our Vice President, General Counsel and Corporate Secretary since 2004 and additionally as our 
Vice President, Strategic Corporate Development since 2009. Ms. Tseng joined the Company from MaXXan Systems, Inc. 
where  she  was  Vice  President  and  General  Counsel  from  2001  to  2004.  Previously,  Ms.  Tseng  was  an  attorney  at  Gray 
Cary Ware & Freidenrich, LLP and Jones, Day, Reavis & Pogue.  Ms. Tseng is a member of the state bar in both California 
and  New  York  and  is  a  member  of  the  bar  association  of  the  Republic  of  China  (Taiwan).  She  holds  Masters  of  Law 
degrees from the University of California at Berkeley and the Chinese Culture University in Taipei.     

ITEM 1A.  RISK FACTORS 

Our business involves risks and uncertainties. You should carefully consider the risks described below, together with all of 
the other information in this Annual Report on Form 10-K and other filings with the Securities and Exchange Commission 
in evaluating our business.  If any of the following risks actually occur, our business, financial condition, operating results, 
and growth prospects would likely be adversely affected.  In such an event, the trading price of our common stock could 
decline, and you could lose all or part of your investment in our common stock. Our past financial performance should not 
be considered to be a reliable indicator of future performance, and investors should not use historical trends to anticipate 
results  or  trends  in  future  periods.   These  risks  involve  forward-looking  statements  and  our  actual  results  may  differ 
substantially from those discussed in these forward-looking statements. 

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The  future  trading  price  of  our  common  stock  could  be  subject  to  wide  fluctuations  in  response  to  a  variety  of 
factors. 

The future trading price of our common stock is likely to be highly volatile and could be subject to wide fluctuations in 
response to various factors, many of which are beyond our control, including: 

• 

• 

• 

our results of operations and financial performance; 

general economic, industry and market conditions worldwide; 

our ability to outperform the market, and outperform at a level that meets or exceeds our investors’ expectations; 

•  whether our forward guidance meets the expectations of our investors; 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the depth and liquidity of the market for our common stock; 

developments generally affecting the semiconductor industry; 

commencement of or developments relating to our involvement in litigation; 

investor perceptions of us and our business strategies; 

changes in securities analysts’ expectations or our failure to meet those expectations; 

actions by institutional or other large stockholders; 

terrorist acts or acts of war; 

actual or anticipated fluctuations in our results of operations; 

developments with respect to intellectual property rights; 

announcements of technological innovations or significant contracts by us or our competitors; 

introduction of new products by us or our competitors; 

our sale of common stock or other securities in the future; 

conditions and trends in technology industries; 

changes in market valuation or earnings of our competitors; 

any mergers, acquisitions or divestitures of assets; 

government debt default; 

our  ability  to  develop  new  products,  enter  new  market  segments,  gain  market  share,  manage  litigation  risk,
diversify our customer base and successfully secure manufacturing capacity; 

our ability to increase our gross margins; and 

changes in the estimation of the future size and growth rate of our markets. 

In addition, the stock market in general often experiences substantial volatility that is seemingly unrelated to the operating 
performance  of  particular  companies.  These  broad  market  fluctuations  may  adversely  affect  the  trading  price  of  our 
common stock. 

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We expect our operating results to fluctuate from quarter to quarter and year to year, which may make it difficult 
to predict our future performance and could cause our stock price to decline and be volatile. 

Our  revenue,  expenses,  and  results  of  operations  are  difficult  to  predict,  have  varied  significantly  in  the  past  and  will 
continue  to  fluctuate  significantly  in  the  future  due  to  a  number  of  factors,  many  of  which  are  beyond  our  control.  We 
expect fluctuations to continue for a number of reasons, including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

changes in general demand for electronic products as a result of worldwide macro-economic conditions;  

changes in business conditions at our distributors, value-added resellers and/or end-customers; 

changes in general economic conditions in the countries where our products are sold or used; 

the timing of developments and related expenses in our litigation matters; 

the possibility of lost business as a result of customer and prospective customer concerns about being litigation
targets; 

continued dependence on our turns business (orders received and shipped within the same fiscal quarter); 

increases in assembly costs due to commodity price increases, such as the price of gold; 

the timing of new product introductions by us and our competitors; 

changes in our revenue mix between OEMs, ODMs, distributors and value-added resellers; 

changes in product mix and actual and potential product liability; 

the acceptance of our new products in the marketplace; 

our ability to develop new process technologies and achieve volume production; 

our ability to meet customer product demand in a timely manner; 

the scheduling, rescheduling, or cancellation of orders by our customers; 

the cyclical nature of demand for our customers’ products; 

the fluctuations in our estimate for stock rotation reserves; 

our ability to manage our inventory levels, including the levels of inventory held by our distributors; 

inventory levels and product obsolescence; 

seasonality and variability in the storage and computing, consumer electronics, and communications markets; 

the availability of adequate manufacturing capacity from our outside suppliers; 

increases in prices for finished wafers due to general capacity shortages; 

the potential loss of future business resulting from capacity issues; 

changes in manufacturing yields; 

movements in exchange rates, interest rates or tax rates; and 

accounting charges resulting from equity awards granted to our employees. 

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Due to the factors noted above and other risks described in this section, many of which are beyond our control, you should 
not  rely  on  quarter-to-quarter  or  year-over-year  comparisons  to  predict  our  future  financial  performance.  Unfavorable 
changes in any of the above factors may seriously harm our business and cause our stock price to decline and be volatile. 

Our  business  has  been  and  may  continue  to  be  significantly  impacted  by  worldwide  economic  conditions  and 
uncertainty in the outlook for the global economy makes it more likely that our actual results will differ materially 
from expectations. 

Global credit and financial markets have experienced disruptions, and may continue to experience disruptions in the future, 
including  diminished  liquidity  and  credit  availability,  declines  in  consumer  confidence,  declines  in  economic  growth, 
increases in unemployment rates, and continued uncertainty about economic stability. These economic uncertainties affect 
businesses  such  as  ours  in  a  number  of  ways,  making  it  difficult  to  accurately  forecast  and  plan  our  future  business 
activities. The continued or further tightening of credit in financial markets may lead consumers and businesses to postpone 
spending, which may cause our customers to cancel, decrease or delay their existing and future orders with us. In addition, 
financial  difficulties  experienced  by  our  suppliers  or  distributors  could  result  in  product  delays,  increased  accounts 
receivable  defaults  and  inventory  challenges.  The  volatility  in  the  credit  markets  has  severely  diminished  liquidity  and 
capital  availability.  Demand  for  consumer  electronics  is  a  function  of  the  health  of  the  economies  in  the  United  States, 
Japan and around the world. We cannot predict the timing, strength or duration of any economic disruption or subsequent 
economic  recovery,  worldwide,  in  the  United  States,  in  our  industry,  or  in  the  consumer  electronics  market.  These  and 
other economic factors have had and may continue to have a material adverse effect on demand for our products and on our 
financial condition and operating results. 

We may not be profitable on a quarterly or annual basis. 

Our profitability is dependent on many factors, including: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

our sales, which because of our turns business (i.e., orders received and shipped within the same fiscal quarter),
are difficult to accurately forecast; 

consumer electronic sales, which have experienced a downturn as a result of the worldwide economic crisis; 

changes in revenue mix between OEMs, ODMs, distributors and value-added resellers; 

changes in product mix and actual and potential product liability; 

changes  in  revenue  mix  between  end  market  segments  (i.e.  communication,  storage  and  computing, consumer
and industrial); 

our competition, which could adversely impact our selling prices and our potential sales; 

our manufacturing costs, including our ability to negotiate with our vendors and our ability to efficiently run our
test facility in China; 

manufacturing capacity constraints; 

stock-based compensation accounting charges; and 

our  operating  expenses,  including  general  and  administrative  expenses,  selling  and  marketing  expenses,  and
research and development expenses relating to products that will not be introduced and will not generate revenue
until later periods, if at all. 

We  may  not  achieve  profitability  on  a  quarterly  or  annual  basis  in  the  future.  Unfavorable  changes  in  our  operations, 
including any of the factors noted above, may have a material adverse effect on our quarterly or annual profitability. For 
example,  due  to  product  shortages  early  in  2010,  several  major  customers  in  Korea  sought  alternative  suppliers,  which 
impacted our revenue particularly in 2011 and may continue to impact our revenue sources and growth in future periods.  

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We may not experience growth rates comparable to past years. 

In  the past,  our  revenue  increased  significantly  in  certain years  due  to  increased  sales  of  certain of our products. Due  to 
various  factors,  including  increased  competition,  loss  of  certain  of  our  customer  base,  unfavorable  changes  in  our 
operations, reduced global electronics demand, end-customer market downturn, market acceptance and penetration of our 
current and future products and ongoing litigation, we may not experience growth rates comparable to past periods, which 
could materially and adversely affect our stock price and results of operations. 

We may be unsuccessful in developing and selling new products with margins similar to or better than what we have 
experienced in the past, which would impact our overall gross margin and financial performance. 

Our success depends on products that are differentiated in the market, which result in gross margins that have historically 
been above the industry averages. Should we fail to improve our gross margin in the future, and accordingly develop and 
introduce  sufficiently  differentiated  products  that  result  in  higher  gross  margins  than  industry  averages,  our  financial 
condition could be materially adversely affected.  

The highly cyclical nature of the semiconductor industry, which has produced significant and sometimes prolonged 
downturns, could materially adversely affect our operating results, financial condition and cash flows. 

Historically,  the  semiconductor  industry  has  been  highly  cyclical  and,  at  various  times,  has  experienced  significant 
downturns  and  wide  fluctuations  in  supply  and  demand.  These  conditions  have  caused  significant  variances  in  product 
demand and production capacity, as well as rapid erosion of average selling prices. The industry may experience severe or 
prolonged downturns in the future, which could result in downward pressure on the price of our products as well as lower 
demand for our products. Because significant portions of our expenses are fixed in the short term or incurred in advance of 
anticipated  sales,  we  may  not  be  able  to  decrease  our  expenses  in  a  timely  manner  to  offset  any  sales  shortfall.  These 
conditions could have a material adverse effect on our operating results, financial condition and cash flows. 

If  demand  for  our  products  declines  in  the  major  end  markets  that  we  serve,  our  revenue  will  decrease  and  our 
results of operations and financial condition would be materially and adversely affected. 

We  believe  that  the  application of our  products  in  the  storage  and  computer,  consumer  electronics,  communications  and 
industrial markets will continue to account for the majority of our revenue. If the demand for our products declines in the 
major end markets that we serve, our revenue will decrease and our results of operations and financial condition would be 
materially and adversely affected. In addition, as technology evolves, the ability to integrate the functionalities of various 
components, including our discrete semiconductor products, onto a single chip and/or onto other components of systems 
containing our products increases. Should our customers require integrated solutions that we do not offer, demand for our 
products could decrease, and our business and results of operations would be materially and adversely affected. 

We may be unsuccessful in developing and selling new products or in penetrating new markets required to maintain 
or expand our business. 

Our competitiveness and future success depend on our ability to design, develop, manufacture, assemble, test, market, and 
support new products and enhancements on a timely and cost-effective basis. A fundamental shift in technologies in any of 
our product markets could have a material adverse effect on our competitive position within these markets. Our failure to 
timely  develop  new  technologies  or  to  react  quickly  to  changes  in  existing  technologies  could  materially  delay  our 
development of new products, which could result in product obsolescence, decreased revenue, and/or a loss of market share 
to competitors. 

As we develop new product lines, we must adapt to market conditions that are unfamiliar to us, such as competitors and 
distribution channels that are different from those we have known in the past. Some of our new product lines require us to 
re-equip  our  labs  to  test  parameters  we  have  not  tested  in  the  past.  If  we  are  unable  to  adapt  rapidly  to  these  new  and 
additional conditions, we may not be able to successfully penetrate new markets. 

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The  success  of  a  new  product  depends  on  accurate  forecasts  of  long-term  market  demand  and  future  technological 
developments, as well as on a variety of specific implementation factors, including: 

• 

• 

• 

• 

• 

• 

• 

timely and efficient completion of process design and device structure improvements; 

timely and efficient implementation of manufacturing, assembly, and test processes; 

the ability to secure and effectively utilize fabrication capacity in different geometries; 

product performance; 

product availability; 

product quality and reliability; and 

effective marketing, sales and service. 

To the extent that we fail to timely introduce new products or to quickly penetrate new markets, our revenue and financial 
condition could be materially adversely affected. 

We derive most of our revenue from direct or indirect sales to customers in Asia and have significant operations in 
Asia, which may expose us to political, cultural, regulatory, economic, foreign exchange, and operational risks. 

We derive most of our revenue from customers located in Asia through direct sales or indirect sales through distribution 
arrangements and value-added reseller agreements with parties located in Asia. As a result, we are subject to increased risks 
due  to  this  geographic  concentration  of  business  and  operations.  For  the  year  ended  December  31,  2013,  approximately 
90% of our revenue was from customers in Asia. There are risks inherent in doing business in Asia, and internationally in 
general, including: 

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• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

changes in, or impositions of, legislative or regulatory requirements, including tax laws in the United States and
in the countries in which we manufacture or sell our products; 

trade restrictions, including restrictions imposed by the United States on trading with parties in foreign countries;

currency exchange rate fluctuations impacting intra-company transactions; 

transportation delays; 

changes in tax regulations in China that may impact our tax status in Chengdu; 

multi-tiered distribution channels that lack visibility to end customer pricing and purchase patterns; 

international political relationships and threats of war; 

terrorism and threats of terrorism; 

epidemics and illnesses; 

work stoppages and infrastructure problems due to adverse weather conditions or natural disasters; 

work stoppages related to employee dissatisfaction; 

economic, social and political instability; 

changes in import/export regulations, tariffs, and freight rates; 

longer accounts receivable collection cycles and difficulties in collecting accounts receivables; 

enforcing contracts generally; and 

11 

  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
   
   
   
  
   
  
   
  
   
  
   
  
   
• 

less effective protection of intellectual property and contractual arrangements. 

If  we  fail  to  expand  our  customer  base  and  significantly  reduce  the  geographic  concentration  of  our  customers,  we  will 
continue  to  be  subject  to  the  foregoing  risks,  which  could  materially  and  adversely  affect  our  revenue  and  financial 
condition. 

We depend on a limited number of customers for a significant percentage of our revenue. 

Historically,  we  have  generated  most  of  our  revenue  from  a  limited  number  of  customers.  For  example,  as  a  result  of 
consolidations  in  recent  years  among  distributors,  sales  to  our  largest  distributor  accounted  for  approximately  32%  of 
revenue  for  the  year  ended  December  31,  2013. We  continue  to  rely  on  a  limited number  of  customers  for  a  significant 
portion  of  our revenue.  Because  we rely  on  a  limited  number of  customers  for  significant  percentages  of our  revenue,  a 
decrease in demand for our products from any of our major customers for any reason (including due to market conditions, 
catastrophic  events  or  otherwise)  could  have  a  materially  adverse  impact  on  our  financial  conditions  and  results  of 
operations. 

We are subject to anti-corruption laws in the jurisdictions in which we operate, including the U.S. Foreign Corrupt 
Practices Act, or the FCPA. Our failure to comply with these laws could result in penalties which could harm our 
reputation and have a material adverse effect on our business, results of operations and financial condition. 

We  are  subject  to  the  FCPA,  which  generally  prohibits  companies  and  their  intermediaries  from  making  improper 
payments  to  foreign  officials  for  the  purpose  of  obtaining  or  keeping  business  and/or  other  benefits,  along  with  various 
other  anti-corruption  laws.  Although  we  have  implemented  policies  and  procedures  designed  to  ensure  that  we,  our 
employees and other intermediaries comply with the FCPA and other anti-corruption laws to which we are subject, there is 
no assurance that such policies or procedures will work effectively all of the time or protect us against liability under the 
FCPA  or  other  laws  for  actions  taken  by  our  employees  and  other  intermediaries  with  respect  to  our  business  or  any 
businesses that we may acquire. We have significant operations in Asia, which places us in frequent contact with persons 
who may be considered “foreign officials” under the FCPA, resulting in an elevated risk of potential FCPA violations. If 
we  are  not  in  compliance  with  the  FCPA  and  other  laws  governing  the  conduct  of  business  with  government  entities 
(including local laws), we may be subject to criminal and civil penalties and other remedial measures, which could have an 
adverse impact on our business, financial condition, results of operations and liquidity. Any investigation of any potential 
violations of the FCPA or other anti-corruption laws by U.S. or foreign authorities could harm our reputation and have an 
adverse impact on our business, financial condition and results of operations. 

We  receive  a  significant  portion  of  our  revenue  from  distribution  arrangements,  value-added  resellers  and  direct 
customers,  and  the  loss  of  any  one  of  these  distributors,  value-added  resellers  or  direct  customers  or  failure  to 
collect a receivable from them could adversely affect our operations and financial position. 

We  market  our  products  through  distribution  arrangements  and  value-added  resellers  and  through  our  direct  sales  and 
applications support organization to customers that include OEMs, ODMs and electronic manufacturing service providers. 
Receivables  from  our  customers  are  generally  not  secured  by  any  type  of  collateral  and  are  subject  to  the  risk  of  being 
uncollectible. As a result of consolidations in recent years among distributors, sales to our largest distributor accounted for 
approximately 32% of our total revenue for the year ended December 31, 2013. Significant deterioration in the liquidity or 
financial condition of any of our major customers or any group of our customers could have a material adverse impact on 
the collectability of our accounts receivable and our future operating results. We primarily conduct our sales on a purchase 
order basis, and we do not have any long-term supply commitments. 

12 

  
   
  
   
  
  
  
  
  
  
 
 
Moreover,  we  believe  a  high  percentage  of  our  products  are  eventually  sold  to  a  number  of  OEMs.  Although  we 
communicate  with  OEMs  in  an  attempt  to  achieve  “design  wins,”  which  are  decisions  by  OEMs  and/or  ODMs  to 
incorporate our products, we do not have purchase commitments from these end users. Therefore, there can be no assurance 
that  the  OEMs  and/or  ODMs  will  continue  to  incorporate  our  ICs  into  their  products.  OEM  technical  specifications  and 
requirements can change rapidly, and we may not have products that fit new specifications from an end-customer for whom 
we have had previous design wins. We cannot be certain that we will continue to achieve design wins from large OEMs, 
that  our  direct  customers  will  continue  to  be  successful  in  selling  to  the  OEMs,  or  that  the  OEMs  will  be  successful  in 
selling products which incorporate our ICs. The loss of any significant customer, any material reduction in orders by any of 
our significant customers or by their OEM customers, the cancellation of a significant customer order, or the cancellation or 
delay  of  a  customer’s  or  OEM’s  significant  program  or  product  could  reduce  our  revenue  and  adversely  affect  our 
operations and financial condition.  

Due to the nature of our business as a component supplier, we may have difficulty both in accurately predicting our 
future revenue and appropriately managing our expenses. 

Because we provide components for end products and systems, demand for our products is influenced by our customers’ 
end product demand. As a result, we may have difficulty in accurately forecasting our revenue and expenses. Our revenue 
depends  on  the  timing,  size,  and  speed  of  commercial  introductions  of  end  products  and  systems  that  incorporate  our 
products,  all  of  which  are  inherently  difficult  to  forecast,  as  well  as  the  ongoing  demand  for  previously  introduced  end 
products  and  systems.  In  addition,  demand  for  our  products  is  influenced  by  our  customers’  ability  to  manage  their 
inventory. Our sales to distributors are subject to higher volatility because they service demand from multiple levels of the 
supply chain which, in itself, is inherently difficult to forecast. If our customers, including distributors, do not manage their 
inventory  correctly  or  misjudge  their  customers’  demand,  our  shipments  to  and  orders  from  our  customers  may  vary 
significantly on a quarterly basis. 

Our  ability  to  increase  product  sales  and  revenue may  be constrained  by  the  manufacturing  capacity  of  our 
suppliers. 

Although we provide our suppliers with rolling forecasts of our production requirements, their ability to provide wafers to 
us  is  limited  by  the  available  capacity,  particularly  capacity  in  the  geometries  we  require,  at  the  facilities  in  which  they 
manufacture  wafers  for  us.  As  a  result,  this  lack  of  capacity  has  at  times  constrained  our  product  sales  and  revenue 
growth.  In addition, an increased need for capacity to meet internal demands or demands of other customers could cause 
our suppliers to reduce capacity available to us. Our suppliers may also require us to pay amounts in excess of contracted or 
anticipated  amounts  for  wafer  deliveries  or  require  us  to  make  other  concessions  in  order  to  acquire  the  wafer  supply 
necessary to meet our customer requirements. If our suppliers extend lead times, limit supplies or the types of capacity we 
require,  or  increase  prices  due  to  capacity  constraints  or  other  factors,  our  revenue  and  gross  margin  may  materially 
decline.  In addition, if we experience supply delays or limitations, our customers may reduce their purchase levels with us 
and/or  seek  alternative  solutions  to  meet  their  demand,  which  could  materially  and  adversely  impact  our  business  and 
results  of  operations.  For  example,  due  to  lack  of  capacity,  which  resulted  in  product  shortages  in  2010,  several  major 
customers  in  Korea  sought  alternative  suppliers,  which  impacted  our  revenue  particularly  in  2011  and  may  continue  to 
impact our revenue sources and growth in future periods.  

We  currently  depend  on  third-party  suppliers  to  provide  us  with  wafers  for  our  products.  If  any  of  our  wafer 
suppliers  become  insolvent  or  capacity  constrained  and  are  unable  and/or  fail  to  provide  us  sufficient  wafers  at 
acceptable yields and at anticipated costs, our revenue and gross margin may decline or we may not be able to fulfill 
our customer orders. 

We  have  a  supply  arrangement  with  certain  suppliers  for  the  production  of  wafers.  Should  any  of  our  suppliers  become 
insolvent or capacity constrained, we may not be able to fulfill our customer orders, which would likely cause a decline in 
our revenue. 

While certain aspects of our relationship with these suppliers are contractual, many important aspects of this relationship 
depend on our suppliers’ continued cooperation and our management relationships. In addition, the fabrication of ICs is a 
highly complex and precise process. Problems in the fabrication process can cause a substantial percentage of wafers to be 
rejected  or  numerous  ICs  on  each  wafer  to  be  non-functional.  This  could  potentially  reduce  yields.  The  failure  of  our 
suppliers to supply us wafers at acceptable yields could prevent us from fulfilling our customer orders for our products and 
would likely cause a decline in our revenue. 

13 

   
  
  
  
   
  
  
  
Further, as is  common in the semiconductor industry, our customers  may reschedule or cancel orders on relatively short 
notice. Under our agreement with our suppliers, we have an option to order wafers based on a committed forecast that can 
cover a period of one to six months. If our customers cancel orders after we submit a committed forecast to our suppliers 
for  the  corresponding  wafers,  we  may  be  required  to  purchase  wafers  that  we  may  not  be  able  to  resell,  which  would 
adversely affect our operating results, financial condition, and cash flows. 

We  might  not  be  able  to  deliver  our  products  on  a  timely  basis  if  our  relationships  with  our  assembly  and  test 
subcontractors are disrupted or terminated. 

We do not have direct control over product delivery schedules or product quality because all of our products are assembled 
by third-party subcontractors and a portion of our testing is currently performed by third-party subcontractors. Also, due to 
the  amount  of  time  typically  required  to  qualify  assembly  and  test  subcontractors,  we  could  experience  delays  in  the 
shipment  of  our  products  if  we  were  forced  to  find  alternate  third  parties  to  assemble  or  test  our  products.  In  addition, 
events  such  as  the  recent  global  economic  crisis  may  materially  impact  our  assembly  suppliers’  ability  to  operate.  Any 
future  product  delivery  delays  or  disruptions  in  our  relationships  with  our  subcontractors  could  have  a  material  adverse 
effect on our operating results, financial condition, and cash flows.  

There  may  be  unanticipated  costs  associated  with  adding  to  or  supplementing  our  third-party  suppliers’ 
manufacturing capacity. 

We anticipate that future growth of our business will require increased manufacturing capacity on the part of third-party 
supply foundries, assembly shops, and testing facilities for our products.  In order to facilitate such growth, we may need to 
enter into strategic transactions, investments and other activities. Such activities are subject to a number of risks, including: 

• 

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• 

• 

• 

the costs and expense associated with such activities; 

the availability of modern foundries to be developed, acquired, leased or otherwise made available to us or our
third-party suppliers; 

the ability of foundries and our third-party suppliers to obtain the advanced equipment used in the production of
our products; 

delays in bringing new foundry operations online to meet increased product demand; and 

unforeseen  environmental,  engineering  or  manufacturing  qualification  problems  relating  to  existing  or  new
foundry facilities. 

These and other risks may affect the ultimate cost and timing of any expansion of our third-party suppliers’ capacity. 

We purchase inventory in advance based on expected demand for our products, and if demand is not as expected, 
we may have insufficient or excess inventory, which could adversely impact our financial position. 

As a fabless semiconductor company, we purchase our inventory from third party manufacturers in advance of selling our 
product. We place orders with our manufacturers based on existing and expected orders from our customers for particular 
products. While most of our contracts with our customers and distributors include lead time requirements and cancellation 
penalties  that  are  designed  to  protect  us  from  misalignment  between  customer  orders  and  inventory  levels,  we  must 
nonetheless  make  some  predictions  when  we  place  orders  with  our  manufacturers.  In  the  event  that  our  predictions  are 
inaccurate due to unexpected increases in orders or unavailability of product within the timeframe that is required, we may 
have insufficient inventory to meet our customer demands. In the event that we order products that we are unable to sell 
due to a decrease in orders, unexpected order cancellations, injunctions due to patent litigations, or product returns, we may 
have excess inventory which, if not sold, may need to be disposed of or would result in a decrease in our revenue in future 
periods as the excess inventory at our distributors is sold. If any of these situations were to arise, it could have a material 
impact on our business and financial position. 

14 

  
  
   
  
  
   
  
   
  
   
  
   
  
   
  
   
  
  
 
 
The outcome of currently ongoing and future examinations of our income tax returns by the IRS and foreign tax 
authorities could have a material adverse effect on our results of operations. 

We are subject to examination of our income tax returns by the IRS and other tax authorities. Our U.S. Federal income tax 
returns for  the  years  ended December  31, 2005  through December  31, 2007  are under  examination by  the  IRS.  In  April 
2011, we received from the IRS a Notice of Proposed Adjustment, or "NOPA", relating to a cost-sharing agreement entered 
into by us and our international subsidiaries on January 1, 2004. In the NOPA, the IRS objected to our allocation of certain 
litigation  expenses  between  us  and  our  international  subsidiaries  and  the  amount  of  "buy-in  payments"  made  by  our 
international subsidiaries to us in connection with the cost-sharing agreement, and proposed to increase our U.S. taxable 
income  according  to  a  few  alternative  methodologies.  In  February  2012,  we  received  a  revised  NOPA  from  the  IRS 
(Revised NOPA). In this Revised NOPA, the IRS raised the same issues as in the NOPA issued in April 2011 but under a 
different methodology. Under the Revised NOPA, the largest potential federal income tax adjustment, if the IRS were to 
prevail  on  all  matters  in  dispute,  is  $10.5  million,  plus  interest  and  penalties,  if  any.  We  responded  to  the  IRS  Revised 
NOPA in May 2012. As of June 2013, the IRS has responded and continues to disagree with our rebuttal. We took the issue 
to  the  IRS  Office  of  Appeals  and  have  an  appointed  date  in  March  2014.  Meanwhile,  we  agreed  to  grant  the  IRS  an 
extension of the statute of limitations for taxable years 2005 through 2007 to December 31, 2014.  

The IRS also audited the research and development credits carried forward into year 2005 and the credits generated in the 
years  2005  through  2007.  We  received  a  NOPA  from  the  IRS  in  February  2011,  proposing  to  reduce  the  research  and 
development  credits  generated  in  year  2005  through  2007  and  the  carryforwards,  which  would  then  reduce  the  value  of 
such credits carried forward to subsequent tax years. 

We  have  reviewed  and  responded  to  the  above  proposed  adjustments.  We  regularly  assess  the  likelihood  of  an  adverse 
outcome  resulting  from  such  examinations  to  determine  the  adequacy  of  our  provision  for  income  taxes.  Based  on  the 
technical merits of our tax return filing positions, we believe that it is more likely than not that the benefit of such positions 
will be sustained upon the resolution of our audits, resulting in no significant impact on our consolidated financial position 
and the results of operations and cash flows.  

Changes  in  effective  tax  rates  or  adverse  outcomes  resulting  from  examination  of  our  income  tax  returns  could 
adversely affect our results. 

Our future effective tax rates could be adversely affected by earnings being lower than anticipated in countries where we 
have lower statutory rates and higher than anticipated in countries where we have higher statutory rates, by changes in the 
valuation  of  our  deferred  tax  assets  and  liabilities,  or  by  changes  in  tax  laws,  regulations,  accounting  principles  or 
interpretations  thereof  and  discrete  items  such  as  future  exercises  or  dispositions  of  stock  options  and  restricted  stock 
releases.  In  addition,  we  are  subject  to  the  continuous  examination  of  our  income  tax  returns  by  the  IRS  and  other  tax 
authorities.  We  regularly  assess  the  likelihood  of  adverse  outcomes  resulting  from  these  examinations  to  determine  the 
adequacy  of  our  provision  for  income  taxes.  There  can  be  no  assurance  that  the  outcomes  from  these  continuous 
examinations will not have an adverse effect on our operating results and financial condition. 

The  complexity  of  calculating  our  tax  provision  may  result  in  errors  that  could  result  in  restatements  of  our 
financial statements. 

Due to the complexity associated with the calculation of our tax provision, we have hired independent tax advisors to assist 
us in the calculation. If we or our independent tax advisors fail to resolve or fully understand certain issues that we may 
have had in the past and issues that may arise in the future, we could be subject to errors, which would result in us having 
to restate our financial statements. For example, because of the complexity of our tax structure, we have had errors in our 
financial  statements  in  the  calculation  of  our  tax  provision  that  previously  resulted  in  restatements  of  our  prior  year 
financial  results.  Restatements  are  generally  costly  and  could  adversely  impact  our  results  of  operations  and/or  have  a 
negative impact on the trading price of our common stock.  

If we are unsuccessful in legal proceedings brought against us or any of our customers, we could be prevented from 
selling  many  of  our  products  and/or  be  required  to  pay  substantial  damages.  An  unfavorable  outcome  or  an 
additional award of damages, attorneys’ fees or an injunction could cause our revenue to decline significantly and 
could severely harm our business and operating results. 

From time to time we are party to various legal proceedings. If we are not successful in litigation that could be brought 
against us or our customers, we could be ordered to pay monetary fines and/or damages. If we are found liable for willful 
patent infringement, damages could be doubled or tripled. We and/or our customers could also be prevented from selling 
15 

  
  
   
   
  
   
  
   
  
some or all of our products. Moreover, our customers and end-users could decide not to use our products, and our products 
and  our  customers’  accounts  payable  to  us  could  be  seized.  Finally,  interim  developments  in  these  proceedings  could 
increase the volatility in our stock price as the market assesses the impact of such developments on the likelihood that we 
will or will not ultimately prevail in these proceedings. 

Given our inability to control the timing and nature of significant events in our legal proceedings that either have 
arisen  or  may  arise,  our  legal  expenses  are  difficult  to  forecast  and  may  vary  substantially  from  our  publicly-
disclosed  forecasts  with  respect  to  any  given  quarter,  which  could  contribute  to  increased  volatility  in  our  stock 
price and financial condition. 

Historically, we have incurred significant expenses in connection with various legal proceedings that vary with the level of 
activity in the proceeding. It is difficult for us to forecast our legal expenses for any given quarter, which adversely affects 
our  ability  to  forecast  our  expected  results  of  operations  in  general.  We  may  also  be  subject  to  unanticipated  legal 
proceedings,  which  would  result  in  our  incurrence  of  unexpected  legal  expenses.  If  we  fail  to  meet  the  expectations  of 
securities or industry analysts as a result of unexpected changes in our legal expenses, our stock price could be impacted. 

Future legal proceedings may divert our financial and management resources. 

The semiconductor industry is characterized by frequent claims of infringement and litigation regarding patent and other 
intellectual property rights. Patent infringement is an ongoing risk, in part because other companies in our industry could 
have patent rights that may not be identifiable when we initiate development efforts. Litigation may be necessary to enforce 
our  intellectual  property  rights,  and  we  may  have  to  defend  ourselves  against  additional  infringement  claims.  Such 
litigation is very costly. In the event any third party makes a new infringement claim against us or our customers, we could 
incur  additional  ongoing  legal  expenses.  In  addition,  in  connection  with  these  legal  proceedings,  we  may  be  required  to 
post bonds to defend our intellectual property rights in certain countries for an indefinite period of time, until such dispute 
is  resolved.  If  our  legal  expenses  materially  increase  or  exceed  anticipated  amounts,  our  capital  resources  and  financial 
condition  could  be  adversely  affected.  Further,  if  we  are  not  successful  in  any  of  our  intellectual  property  defenses,  our 
financial condition could be adversely affected and our business could be harmed. In addition, our management team may 
also  be  required  to  devote  a  great  deal  of  time,  effort  and  energy  to  these  legal  proceedings,  which  could  divert 
management’s attention from focusing on our operations and adversely affect our business. 

We will continue to vigorously defend and enforce our intellectual property rights around the world, especially as it 
relates to patent litigation. 

From  time  to  time,  we  are  faced with having  to  defend  our  intellectual  property rights throughout  the  world. Should  we 
become  engaged  in  such  proceedings,  it  could  divert  management’s  attention  from  focusing  on  and  implementing  our 
business strategy. Further, should we not be successful in any of our intellectual property enforcement actions, our revenue 
may be affected and our business could be harmed. 

Failure to protect our proprietary technologies or maintain the right to certain technologies may negatively affect 
our ability to compete. 

We  rely  heavily  on  our  proprietary  technologies.  Our  future  success  and  competitive  position  depend  in  part  upon  our 
ability  to  obtain  and  maintain  protection  of  certain  proprietary  technologies  used  in  our products. We  pursue  patents  for 
some of our new products and unique technologies, and we also rely on a combination of nondisclosure agreements and 
other  contractual  provisions,  as  well  as  our  employees’  commitment  to  confidentiality  and  loyalty,  to  protect  our 
technology, know-how, and processes. Despite the precautions we take, it may be possible for unauthorized third parties to 
copy aspects of our current or future technology or products or to obtain and use information that we regard as proprietary. 
We intend to continue to protect our proprietary technology, including through patents. However, there can be no assurance 
that  the  steps  we  take  will  be  adequate  to  protect  our  proprietary  rights,  that  our  patent  applications  will  lead  to  issued 
patents, that others will not develop or patent similar or superior products or technologies, or that our patents will not be 
challenged, invalidated, or circumvented by others. Furthermore, the laws of the countries in which our products are or may 
be developed, manufactured, or sold may not protect our products and intellectual property rights to the same extent as laws 
in the United States. Our failure to adequately protect our proprietary technologies could harm our business.  

16 

  
  
  
  
   
  
   
  
   
 
 
The downgrade of the credit rating for U.S. long-term sovereign debt and that of certain Eurozone countries could 
affect global and domestic financial markets, which may affect our business, financial condition and liquidity. 

Although a downgrade of long-term sovereign credit ratings is not unprecedented, a downgrade of the U.S. credit rating is, 
and the potential impact is uncertain. Management will continue to monitor the situation and there could be future changes 
in capital requirements or a rebalancing of investment portfolios in response to management’s assessment of the related risk 
weightings. At this time, however, U.S. treasuries continue to trade in active markets, and the yield curve on U.S. treasuries 
remains an appropriate basis for determining risk-free rates. 

Should there be a deterioration of the global and financial markets as a result of the downgraded credit rating for U.S. long-
term  sovereign  debt,  and  that  of  certain  Eurozone  countries,  our  business,  financial  condition  and  liquidity  could  be 
adversely affected. 

The  market  for  government-backed  student  loan  auction-rate  securities  has  suffered  a  decline  in  liquidity  which 
may impact the liquidity and potential value of our investment portfolio. 

The market for government-backed student loan auction-rate securities with interest rates that reset through a Dutch auction 
every 7 to 35 days became illiquid in 2008. We experienced our first failed auction in mid-February 2008. At December 31, 
2013, $10.3  million  of  our  auction-rate  security  investments  have  failed  to  reset  through  successful  auctions  and  it  is 
unclear as to when these investments will regain their liquidity. The underlying maturity of these auction-rate securities is 
up to 35 years. 

We  recorded  temporary  and  other-than-temporary  impairment  charges  on  these  investments.  The  valuation  is  subject  to 
fluctuations in the future, which will depend on many factors, including the quality of underlying collateral, estimated time 
for  liquidity  including  potential  to  be  called  or  restructured,  underlying  final  maturity,  insurance  guaranty  and  market 
conditions, among others. 

Should there be further deterioration in the market for auction-rate securities, the value of our portfolio may decline, which 
may have an adverse impact on our cash position and our earnings. If the accounting rules for these securities change, there 
may be an adverse impact on our earnings.  

We face risks in connection with our internal control over financial reporting. 

Effective internal control over financial reporting is necessary for us to provide reliable and accurate financial reports. If we 
cannot provide reliable financial reports or prevent fraud or other financial misconduct, our business and operating results 
could be harmed. Our failure to implement and maintain effective internal control over financial reporting could result in a 
material misstatement of our financial statements or otherwise cause us to fail to meet our financial reporting obligations. 
This, in turn, could result in a loss of investor confidence in the accuracy and completeness of our financial reports, which 
could have an adverse effect on our results of operations and/or have a negative impact on the trading price of our common 
stock, and could subject us to stockholder litigation. For example, because of the complexity of our tax structure, we have 
had errors in our financial statements in the calculation of our tax provision that previously resulted in restatements of our 
prior  year  financial  results.  Although  we  believe  that  we  have  implemented  appropriate  internal  control  over  financial 
reporting related to the computation of our income tax provision, we cannot be certain that any measures we have taken or 
may take in the future will ensure that we implement and maintain adequate internal control over financial reporting and 
that  we  will  avoid  any  material  weakness  in  the  future.  In  addition,  we  cannot  assure  you  that  we  will  not  in  the  future 
identify  further  material  weaknesses  in  our  internal  control  over  financial  reporting  that  we  have  not  discovered  to  date, 
which may impact the reliability of our financial reporting and financial statements. 

Our products must meet specifications, and undetected defects and failures may occur, which may cause customers 
to return or stop buying our products and may expose us to product liability risk. 

Our customers generally establish demanding specifications for quality, performance, and reliability that our products must 
meet.  Integrated  circuits  as  complex  as  ours  often  encounter  development  delays  and  may  contain  undetected  defects  or 
failures when first introduced or after commencement of commercial shipments, which might require product replacement 
or recall. Further, our third-party manufacturing processes or changes thereof, or raw material used in the manufacturing 
processes may cause our products to fail. We have from time to time in the past experienced product quality, performance 
or  reliability  problems.  Our  standard  warranty  period  is  generally  one  to  two years,  which  exposes  the  company  to 
significant risks of claims for defects and failures. If defects and failures occur in our products, we could experience lost 

17 

  
  
  
  
  
  
   
  
   
  
revenue, increased costs, including warranty expense and costs associated with customer support, delays in, cancellations 
or rescheduling of orders or shipments, and product returns or discounts, any of which would harm our operating results. 

In  addition,  product  liability  claims  may  be  asserted  with  respect  to  our  technology  or  products.  Although  we  currently 
have insurance, there can be no assurance that we have obtained a sufficient amount of insurance coverage, that asserted 
claims will be within the scope of coverage of the insurance, or that we will have sufficient resources to satisfy any asserted 
claims. 

The price and availability of commodities (e.g., gold, copper and silicon) may adversely impact our ability to deliver 
our products in a timely and cost-effective manner and may adversely affect our business and results of operations. 

Our  products  incorporate  commodities  such  as  gold,  copper  and  silicon.  An  increase  in  the  price  or  a  decrease  in  the 
availability of these commodities and similar commodities that we use could negatively impact our business and results of 
operations. 

Devaluation  of  the  U.S. Dollar  relative  to  other  foreign  currencies,  including  the  renminbi,  may  adversely  affect 
results of operations. 

Our  manufacturing  and  packaging  suppliers  are  and  will  continue  to  be  primarily  located  in  China  for  the  foreseeable 
future.  Should  the  value  of  the  renminbi  continue  to  rise  against  the  U.S. Dollar,  there  could  be  an  increase  in  our 
manufacturing costs relative to competitors who have manufacturing facilities located in the U.S., which could adversely 
affect our operations. In addition, because we collect payments from all customers in U.S. dollars, fluctuations in the value 
of foreign currencies could have an adverse impact on our customers’ business, which could negatively impact our business 
and results of operations. 

We  and  our  manufacturing  partners  are  or  will  be  subject  to  extensive  Chinese  government  regulation,  and  the 
benefit  of  various  incentives  from  Chinese  governments  that  we  and  our  manufacturing  partners  receive  may  be 
reduced or eliminated, which could increase our costs or limit our ability to sell products and conduct activities in 
China. 

Most of our manufacturing partners are located in China. In addition, we have established a facility in China, initially for 
the testing of our ICs. The Chinese government has broad discretion and authority to regulate the technology industry in 
China. China’s government has implemented policies from time to time to regulate economic expansion in China. It also 
exercises  significant  control  over  China’s  economic  growth  through  the  allocation  of  resources,  controlling  payment  of 
foreign  currency-denominated  obligations,  setting  monetary  policy  and  providing  preferential  treatment  to  particular 
industries or companies. New regulations or the readjustment of previously implemented regulations could require us and 
our manufacturing partners to change our business plans, increase our costs, or limit our ability to sell products and conduct 
activities in China, which could adversely affect our business and operating results. 

In addition, the Chinese government and provincial and local governments have provided, and continue to provide, various 
incentives  to  encourage  the  development  of  the  semiconductor  industry  in  China.  Such  incentives  include  tax  rebates, 
reduced  tax  rates,  favorable  lending  policies  and  other  measures,  some  or  all  of  which  may  be  available  to  our 
manufacturing  partners  and  to  us  with  respect  to  our  facility  in  China.  Any  of  these  incentives  could  be  reduced  or 
eliminated by governmental authorities at any time. Any such reduction or elimination of incentives currently provided to 
our manufacturing partners could adversely affect our business and operating results. 

There are inherent risks associated with the operation of our testing facility in China, which could increase product 
costs or cause a delay in product shipments. 

We have a testing facility in China that began operations in 2006. We face the following risks, among others, with respect 
to our testing facility in China: 

• 

• 

• 

inability to hire and maintain a qualified workforce; 

inability to maintain appropriate and acceptable manufacturing controls; and 

higher than anticipated overhead and other costs of operation. 

18 

   
  
  
  
  
  
  
  
   
  
  
   
  
   
  
   
  
If  we  are  unable  to  maintain  our  testing  facility  in  China  at  fully  operational  status  with  qualified  workers,  appropriate 
manufacturing controls and reasonable cost levels, we may incur higher costs than our current expense levels, which would 
affect our gross margins. In addition, if capacity restraints result in significant delays in product shipments, our business 
and results of operations would be adversely affected. 

The average selling prices of products in our markets have historically decreased over time and will likely do so in 
the future, which could harm our revenue and gross profits. 

Average selling prices of semiconductor products in the markets we serve have historically decreased over time. Our gross 
profits and financial results will suffer if we are unable to offset any reductions in our average selling prices by reducing 
our costs, developing new or enhanced products on a timely basis with higher selling prices or gross profits, or increasing 
our sales volumes. Additionally, because we do not operate our own manufacturing or assembly facilities, we may not be 
able to reduce our costs as rapidly as companies that operate their own facilities, and our costs may even increase, which 
could also reduce our profit margins.  

Because of the lengthy sales cycles for our products and the fixed nature of a significant portion of our expenses, we 
may  incur  substantial  expenses  before  we  earn  associated  revenue  and  may not  ultimately  achieve  our  forecasted 
sales for our products. 

The  introduction  of  new  products  presents  significant  business  challenges  because  product  development  plans  and 
expenditures must be made up to two years or more in advance of any sales. It takes us up to 12 months or more to design 
and manufacture a new product prototype. Only after we have a prototype do we introduce the product to the market and 
begin  selling  efforts  in  an  attempt  to  achieve  design wins.  This  sales process  requires  us  to  expend  significant  sales  and 
marketing resources without any assurance of success. Volume production of products that use our ICs, if any, may not be 
achieved  for  an  additional  period  of  time  after  an  initial  sale.  Sales  cycles  for  our  products  are  lengthy  for  a  number  of 
reasons, including: 

• 

• 

• 

• 

our  customers  usually  complete  an  in-depth  technical  evaluation  of  our  products  before  they  place  a  purchase 
order; 

the commercial adoption of our products by OEMs and ODMs is typically limited during the initial release of
their product to evaluate product performance and consumer demand; 

our products must be designed into our customers’ products or systems; and 

the  development  and  commercial  introduction  of  our  customers’  products  incorporating  new  technologies
frequently are delayed. 

As  a  result  of  our  lengthy  sales  cycles,  we  may  incur  substantial  expenses  before  we  earn  associated  revenue  because  a 
significant portion of our operating expenses is relatively fixed and based on expected revenue. The lengthy sales cycles of 
our products  also  make  forecasting  the  volume  and  timing  of orders difficult.  In  addition,  the  delays  inherent  in  lengthy 
sales cycles raise additional risks that customers may cancel or change their orders. Our sales are made by purchase orders. 
Because industry practice allows customers to reschedule or cancel orders on relatively short notice, backlog is not always 
a good indicator of our future sales. If customer cancellations or product changes occur, we could lose anticipated sales and 
not have sufficient time to reduce our inventory and operating expenses. 

Our success depends on our investment of significant resources in research and development. We may have to invest 
more  resources  in  research  and  development  than  anticipated,  which  could  increase  our  operating  expenses  and 
negatively impact our operating results. 

Our success depends on us investing significant amounts of resources into research and development. We expect to have to 
continue to invest heavily in research and development in the future in order to continue to innovate and come to market 
with new products in a timely manner and increase our revenue and profitability. If we have to invest more resources in 
research and development than we anticipate, we could see an increase in our operating expenses which may negatively 
impact  our  operating  results.  Also,  if  we  are  unable  to  properly  manage  and  effectively  utilize  our  research  and 
development resources, we could see adverse effects on our business, financial condition and operating results. 

19 

   
  
  
  
  
   
  
   
  
   
  
   
  
   
  
 
 
In  addition,  if  new  competitors,  technological  advances  by  existing  competitors,  our  entry  into  new  markets,  or  other 
competitive  factors  require  us  to  invest  significantly  greater  resources  than  anticipated  in  our  research  and  development 
efforts, our operating expenses would increase. If we are required to invest significantly greater resources than anticipated 
in  research  and  development  efforts  without  a  corresponding  increase  in  revenue,  our  operating  results  could  decline. 
Research and development expenses are likely to fluctuate from time to time to the extent we make periodic incremental 
investments in research and development and these investments may be independent of our level of revenue which could 
negatively  impact  our  financial  results.  In  order  to  remain  competitive,  we  anticipate  that  we  will  continue  to  devote 
substantial  resources  to  research  and  development,  and  we  expect  these  expenses  to  increase  in  absolute  dollars  in  the 
foreseeable future due to the increased complexity and the greater number of products under development. 

The  loss  of  any  of  our  key  personnel  or  the  failure  to  attract  or  retain  specialized  technical  and  management 
personnel could impair our ability to grow our business. 

Our future success depends upon our ability to attract and retain highly qualified technical and managerial personnel. We 
are  particularly  dependent  on  the  continued  services  of  our  key  executives,  including  Michael  Hsing,  our  President  and 
Chief  Executive  Officer,  who  founded  our  company  and  developed  our  proprietary  process  technology.  In  addition, 
personnel  with  highly  skilled  analog  and  mixed-signal  design  engineering  expertise  are  scarce  and  competition  for 
personnel with these skills is intense. There can be no assurance that we will be able to retain existing key employees or 
that we will be successful in attracting, integrating or retaining other highly qualified personnel with critical capabilities in 
the future. If we are unable to retain the services of existing key employees or are unsuccessful in attracting new highly 
qualified employees quickly enough to meet the demands or our business, including design cycles, our business could be 
harmed. 

If we fail to retain key employees in sales, applications, finance and legal or to make continued improvements to our 
internal systems, particularly in the accounting and finance area, our business may suffer. 

If we fail to continue to adequately staff our sales, applications, financial and legal staff, maintain or upgrade our business 
systems and maintain internal control that meet the demands of our business, our ability to operate effectively will suffer. 
The  operation  of  our  business  also  depends  upon  our  ability  to  retain  these  employees,  as these  employees  hold  a 
significant amount of institutional knowledge about us and our products, and, if they were to terminate their employment, 
our sales and internal control over financial reporting could be adversely affected. 

We  intend  to  continue  to  expand  our  operations,  which  may  strain  our  resources  and  increase  our  operating 
expenses. 

We plan to continue to expand our domestic and foreign operations through internal growth, strategic relationships, and/or 
acquisitions. We expect that any such expansion will strain our systems and operational and financial controls. In addition, 
we are likely to incur significantly higher operating costs. To manage our growth effectively, we must continue to improve 
and expand our systems and controls, as well as hire experienced administrative and financial personnel. If we fail to do so, 
our growth will be limited. If we fail to effectively manage our planned expansion of operations, our business and operating 
results may be harmed. 

We may engage in future acquisitions that dilute the ownership interests of our stockholders and cause us to incur 
debt  or  to  assume  contingent  liabilities,  and  we  may  be  unable  to  successfully  integrate  these  companies  into  our 
operations, which would adversely affect our business. 

As a part of our business strategy, from time to time we review acquisition prospects that would complement our current 
product  offerings,  enhance  our  design  capability  or  offer  other  competitive  opportunities.  In  the  event  of  future 
acquisitions, we could use a significant portion of our available cash, cash equivalents and short-term  investments, issue 
equity  securities  which  would  dilute  current  stockholders’  percentage  ownership,  incur  substantial  debt  or  contingent 
liabilities,  and  incur  impairment  charges  related  to  goodwill  or  other  intangibles.  Such  actions  by  us  could  impact  our 
operating results and the price of our common stock. 

In addition, we may be unable to identify or complete prospective acquisitions for various reasons, including competition 
from  other  companies  in  the  semiconductor  industry,  the  valuation  expectations of  acquisition  candidates  and  applicable 
antitrust  laws  or  related  regulations.  If  we  are  unable  to  identify  and  complete  acquisitions,  we  may  not  be  able  to 
successfully expand our business and product offerings. 

20 

  
  
   
  
  
  
  
  
   
   
 
To  the  extent  we  are  successful  in  completing  strategic  acquisitions,  if  we  are  unsuccessful  in  integrating  any  acquired 
company into our operations or if integration is more difficult than anticipated, we may experience disruptions that could 
harm our business and not realize the anticipated benefits of the acquisitions. Some of the risks that may adversely affect 
our ability to integrate or realize any anticipated benefits from the acquired companies, businesses or assets include those 
associated with: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

unexpected losses of key employees or customers of the acquired companies or businesses; 

conforming the acquired company’s standards, processes, procedures and controls with our operations; 

coordinating new product and process development; 

hiring additional management and other critical personnel; 

increasing the scope, geographic diversity and complexity of our operations; 

difficulties in consolidating facilities and transferring processes and know-how; 

other difficulties in the assimilation of acquired operations, technologies or products; 

the  risk  of  undisclosed  liabilities  of  the  acquired  businesses  and  potential  legal  disputes  with  founders  or
stockholders of acquired companies; 

our inability to commercialize acquired technologies; 

the risk that the future business potential as projected is not realized and as a result, we may be required to take a
charge to earnings that would impact our profitability; 

the need to take impairment charges or write-downs with respect to acquired assets and technologies; 

diversion of management’s attention from other business concerns; and 

adverse effects on existing business relationships with customers. 

We compete against many companies with substantially greater financial and other resources, and our market share 
may be reduced if we are unable to respond to our competitors effectively. 

The  analog  and  mixed-signal  semiconductor  industry  is  highly  competitive,  and  we  expect  competitive  pressures  to 
continue. Our ability to compete effectively and to expand our business will depend on our ability to continue to recruit 
applications  and  design  talent,  our  ability  to  introduce  new  products,  and  our  ability  to  maintain  the  rate  at  which  we 
introduce  these  new  products.  We  compete  with  domestic  and  non-domestic  semiconductor  companies,  many  of  which 
have substantially greater financial and other resources with which to pursue engineering, manufacturing, marketing, and 
distribution of their products. We are in direct and active competition, with respect to one or more of our product lines, with 
at  least  10  manufacturers  of  such  products,  of  varying  size  and  financial  strength.  The  number  of  our  competitors  has 
grown due to the expansion of the market segments in which we participate. 

We  cannot  assure  you  that  our  products  will  continue  to  compete  favorably  or  that  we  will  be  successful  in  the  face  of 
increasing  competition  from  new  products  and  enhancements  introduced  by  existing  competitors  or  new  companies 
entering this market, which would materially and adversely affect our results of operations and our financial condition. 

If securities or industry analysts downgrade our stock or do not continue to publish research or reports about our 
business, our stock price and trading volume could decline. 

The  trading  market  for  our  common  stock  will  depend,  in  part,  on  the  research  and  reports  that  industry  or  securities 
analysts publish about us or our business. We do not have any control over these analysts. If one or more of the analysts 
who cover us downgrade our stock, our stock price would likely decline. If one or more of these analysts cease coverage of 
us or fail to regularly publish reports on us, we could lose visibility in the financial markets, which in turn could cause our 
stock price or trading volume to decline. 

21 

  
   
  
   
  
   
  
   
  
   
   
   
  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
  
  
  
  
  
Major earthquakes or other natural disasters and resulting systems outages may cause us significant losses. 

Our corporate headquarters, the production facilities of our third-party wafer suppliers, our IC testing facility, a portion of 
our assembly and research and development activities, and certain other critical business operations are located in or near 
seismically active regions and are subject to periodic earthquakes. We do not maintain earthquake insurance and could be 
materially and adversely affected in the event of a major earthquake. Much of our revenue, as well as our manufacturers 
and assemblers, are concentrated in Asia. Such concentration increases the risk that other natural disasters, labor strikes, 
terrorism,  war,  political  unrest,  epidemics,  and/or  health  advisories  could  disrupt  our  operations.  In  addition,  we  rely 
heavily on our internal information and communications systems and on systems or support services from third parties to 
manage  our  operations  efficiently  and  effectively.  Any  of  these  are  subject  to  failure  due  to  a  natural  disaster  or  other 
disruption. System-wide or local failures that affect our information processing could have material adverse effects on our 
business, financial condition, operating results, and cash flows. 

ITEM 1B.    UNRESOLVED STAFF COMMENTS 

None. 

ITEM 2.    PROPERTIES 

Our primary operations are located in San Jose, California and Chengdu, China. Prior to May 2012, we leased a facility 
with approximately 55,110 square feet in San Jose, California, which served as our corporate headquarters, as well as our 
sales  and  research  and  development  center.  Certain  test  procedures  and  manufacturing  also  took  place  in  this  San  Jose 
facility.  The  landlord  exercised  their  right  to  terminate  the  lease  in  April  2012.  In  May  2012,  we  moved  to  an  owned 
facility located at 79 Great Oaks Boulevard in San Jose, California, which serves as our corporate headquarters and sales 
offices. The property consists of a building with approximately 106,262 square feet and 5.5 acres of land.   

We  lease  a  facility  with  approximately  56,000  square  feet  in  Chengdu,  China,  which  serves  as  our  test  facility  and 
manufacturing  hub.  In  addition,  we  constructed  a  150,000-square  foot  research  and  development  facility  in  Chengdu, 
China, which was put into operation in October 2010. 

We  also  lease  sales  and  research  and  development  offices  in  the  United  States,  Japan,  China,  Taiwan  and  Korea.  We 
believe that our existing facilities are adequate for our current operations. 

ITEM 3.    LEGAL PROCEEDINGS 

We  and  certain  of  our  subsidiaries  are  parties  to  actions  and  proceedings  in  the  ordinary  course  of  business,  including 
litigation  regarding  our  shareholders  and  our  intellectual  property,  challenges  to  the  enforceability  or  validity  of  our 
intellectual property and claims that our products infringe on the intellectual property rights of others. These proceedings 
often involve complex questions of fact and law and may require the expenditure of significant funds and the diversion of 
other resources to prosecute and defend. We defend ourselves vigorously against any such claims. 

O2 Micro  

In May 2012, the United States District Court for the Northern District of California (the “District Court”) issued an order 
finding O2 Micro International, Ltd. (“O2 Micro”) liable for approximately $9.1 million in attorneys’ fees and non-taxable 
costs,  plus  interest,  in  connection  with  the  patent  litigation  that  we  won  in  2010.   This  award  was  in  addition  to  the 
approximately $0.3 million in taxable costs that the District Court had earlier ordered O2 Micro to pay to us in connection 
with the same lawsuit.  In October 2012, O2 Micro appealed the District Court’s judgment to the United States Court of 
Appeals for the Federal Circuit (the “Federal Circuit”). In August 2013, the Federal Circuit affirmed O2 Micro’s liability 
for the full amount of the award.  In September 2013, O2 Micro filed a petition for rehearing of that ruling, but the Federal 
Circuit denied O2 Micro’s petition for rehearing on October 16, 2013.   

22 

  
  
  
  
  
  
  
  
  
  
  
  
 
 
In November 2013, we received a cash payment of $9.5 million from O2 Micro. In January 2014, O2 Micro filed an appeal 
with  the  United  States  Supreme  Court.  If  the  Supreme  Court  agrees  to  review  the  case  and  O2  Micro  is  successful  in 
obtaining  a  favorable  ruling  against  us,  we  may  be  liable  to  return  a  portion  or  all  of  the  $9.5  million  to  O2  Micro. 
Accordingly, we recorded the $9.5 million as a current liability as of December 31, 2013. 

Silergy 

In  December  2011,  we  entered  into  a  settlement  and  license  agreement  with  Silergy  Corp.  and  Silergy  Technology  for 
infringement  of  our  patent  whereby  we  would  receive  a  total  of  $2.0  million.  The  first  $1.2  million  was  paid  in  equal 
installments  of  $300,000  in  each  quarter  of  2012  and  the  remainder  was  paid  in  two  equal  installments  in  the  first  two 
quarters  of  2013.  No  further  amount  was  due  to  us  as  of December  31,  2013.  All  amounts  were  recorded  as  credits  to 
litigation expense (benefit), net, in the Consolidated Statements of Operations in the periods the proceeds were received. 

Linear 

In August 2012, the United States Court of Appeals for the Federal Circuit issued an order affirming the judgment issued 
by the United States District Court for the District of Delaware finding Linear Technology Corporation (“Linear”) liable for 
approximately  $2.3  million  in  attorneys’  fees  and  non-taxable  costs,  plus  interest,  in  connection  with  the  litigation 
regarding a contract dispute that we won in 2011. During the fourth quarter of 2012, we received a payment from Linear of 
$2.3  million  plus  $0.2  million  reimbursement  of  additional  attorney  fees  in  connection  with  the  cost  of  defending  the 
appeal, which was recorded as a credit to litigation expense (benefit), net, in the Consolidated Statements of Operations.  

ITEM 4.    MINE SAFETY DISCLOSURES 

Not applicable. 

23 

  
  
   
  
   
  
  
 
 
PART II 

ITEM  5.    Market  for  the  Registrant’s  Common  Equity,  Related  Stockholders  Matters,  and  Issuer  Purchases  of 
Equity Securities. 

Market Price of Our Common Stock 

Our  common  stock  is  traded  on  the  Nasdaq  Global  Select  Market  under  the  symbol  “MPWR”.  The  following  table  sets 
forth, for the periods indicated, the high and low sales price per share of our common stock: 

2013 
Fourth quarter ...................................................................................................................  $
Third quarter ....................................................................................................................   
Second quarter .................................................................................................................   
First quarter ......................................................................................................................   

2012 
Fourth quarter ...................................................................................................................  $
Third quarter ....................................................................................................................   
Second quarter .................................................................................................................   
First quarter ......................................................................................................................   

High 

Low

34.66     $ 
31.05       
25.02       
25.51       

22.38     $ 
23.07       
22.40       
19.91       

27.59  
23.93  
20.99  
22.18  

17.17  
17.07  
17.70  
14.58  

Holders of Our Common Stock 

As of February 28, 2014, there were 16 registered holders of record of our common stock. 

Dividend Policy 

In  December  2012,  we  paid  our  first  ever  cash  dividend  of  $1.00  per  share  to  stockholders  for  a  total  of  $35.7  million. 
Other than this special dividend, we have not paid cash dividend on our common stock.  

24 

  
  
  
  
  
 
    
 
     
        
 
  
      
         
 
     
        
 
  
  
  
  
   
 
 
Performance of Our Common Stock 

The following graph compares the cumulative 60-month total return on our common stock relative to the cumulative total 
returns of the Nasdaq Composite Index, the S&P 500 Index and the Philadelphia Semiconductor Index. An investment of 
$100 (with reinvestment of all dividends) is assumed to have been made in our common stock on December 31, 2008 and 
its relative performance is tracked through December 31, 2013. 

The  information  contained  in  the  stock  performance  graph  section  shall  not  be  deemed  to  be  “soliciting  material”  or 
“filed”  or  incorporated  by  reference  in  future  filings  with  the  SEC,  or  subject  to  the  liabilities  of  Section  18  of  the 
Exchange Act, except to the extent that the Company specifically incorporates it by reference into a document filed under 
the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended. 

Purchases of Equity Securities by the Issuer and Affiliated Purchasers 

Stock repurchase activities during the three months ended December 31, 2013 were as follows: 

Total Number 
of Shares 
Purchased (a)

October 1 - October 31 ..........................    
November 1 - November 30 ..................    
December 1 - December 31 ...................    
Total ......................................................    

148,188    $
122,865    $
124,750    $
395,803     

Total Number 
of Shares 
Purchased as 
Part of Publicly 
Announced 
Program 

Dollar Value 
of Shares 
That May Yet 
Be Purchased 
Under the 
Program 
(in thousands)

148,188       
122,865       
124,750       
395,803     $ 

79,400  

Average Price 
Paid per Share    
30.70      
32.26      
33.10      

(a)  In July 2013, the Board of Directors approved a stock repurchase program that authorizes us to repurchase up to $100
million in the aggregate of our common stock through June 30, 2015. Under the program, shares may be repurchased 
in  privately  negotiated  or  open  market  transactions,  including  under  a  Rule  10b5-1  plan. Shares  are  retired  upon 
repurchase.  

25 

  
  
 
  
  
  
  
  
  
   
    
 
  
  
  
      
  
   
 
 
ITEM 6.    SELECTED FINANCIAL DATA 

The following financial data is derived from our audited annual consolidated financial statements as of and for the years 
ended  December  31,  2013,  2012,  2011,  2010  and  2009.  You  should  read  the  following  table  in  conjunction  with  the 
consolidated financial statements and the related notes contained elsewhere in this report on Form 10-K. Operating results 
for any year are not necessarily indicative of results to be expected for any future periods. 

Consolidated Statement of Operations Data: 

2013

Year Ended December 31,   
2011
(in thousands, except per share amounts)

2010 

2012

2009

Revenue .................................................................  $
Cost of revenue .....................................................   
Gross profit .................................................   

238,091     $
110,190      
127,901      

213,813     $
100,665      
113,148      

196,519     $  218,840     $
97,383      
94,925       
121,457      
101,594       

165,008  
67,330  
97,678  

Operating expenses: 

Research and development ................................   
Selling, general and administrative ....................   
Litigation expense (benefit), net ........................   
Total operating expenses ............................   
Income from operations .....................................   
Interest and other income, net ............................   
Income before income taxes ..............................   
Income tax provision .........................................   
Net income .........................................................  $

49,733      
54,624      
(371)    
103,986      
23,915      
92      
24,007      
1,109      
22,898     $

48,796      
50,018      
(2,945)    
95,869      
17,279      
611      
17,890      
2,134      
15,756     $

44,518       
40,280       
3,379       
88,177       
13,417       
309       
13,726       
425       
13,301     $ 

44,372      
41,169      
5,418      
90,959      
30,498      
922      
31,420      
1,857      
29,563     $

38,295  
36,752  
3,101  
78,148  
19,530  
618  
20,148  
474  
19,674  

Basic net income per share ................................  $
Diluted net income per share .............................  $
Weighted average common shares outstanding:       
Basic ...............................................................   
Diluted ...........................................................   

0.61     $
0.59     $

0.45     $
0.43     $

0.39     $ 
0.38     $ 

0.83     $
0.78     $

0.57  
0.54  

37,387      
38,620      

34,871      
36,247      

34,050       
35,160       

35,830      
37,826      

34,310  
36,634  

Consolidated Balance Sheet Data: 

2013

As of December 31, 
2011
(in thousands, except cash dividend per common share)

2010 

2012

2009

Cash and cash equivalents .....................................  $
Short-term investments .........................................   
Long-term investments ..........................................   
Total assets ............................................................   
Long-term income tax liabilities ...........................   
Common stock ......................................................   
Total stockholders' equity .....................................   
Working capital .....................................................   
Cash dividend per common share  ........................   

101,213     $
125,126      
9,860      
368,908      
5,542      
234,201      
323,399      
253,597      
-     

75,104     $
85,521      
11,755      
287,162      
5,408     
194,079      
258,294      
190,841      
1.00      

96,371     $
77,827       
13,675       
273,867       
4,920       
159,336       
242,877       
185,435       
-      

48,010     $
129,709      
19,180      
281,603      
5,015      
178,269      
246,895      
195,403      
-     

46,717  
118,914  
19,445  
241,821  
4,915  
175,518  
212,957  
179,577  
- 

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

The following discussion should be read in conjunction with the consolidated financial statements and related notes which 
appear elsewhere in this Annual Report on Form 10-K. 

Overview 

We  are  a  fabless  semiconductor  company  that  designs,  develops,  and  markets  proprietary,  advanced  analog  and  mixed-
signal  semiconductors.  Our  products  are  used  extensively  in  storage  and  computing  products,  network  communications 

26 

  
  
  
  
 
 
  
 
   
   
    
   
 
  
 
 
      
        
        
        
        
 
  
      
        
        
        
        
 
        
        
        
        
 
  
  
  
 
 
  
 
   
   
    
   
 
  
 
 
   
  
  
  
products, flat panel TVs, set top boxes, lighting products and a wide variety of consumer and portable electronics products, 
and automotive and industrial markets. We believe that we differentiate ourselves by offering solutions that are more highly 
integrated,  smaller  in  size,  more  energy  efficient,  more  accurate  with  respect  to  performance  specifications  and, 
consequently, more cost-effective than many competing solutions. We plan to continue to introduce new products within 
our existing product families, as well as in new innovative product categories. 

We operate in the cyclical semiconductor industry where there is seasonal demand for certain products. We are not and will 
not be immune from current and future industry downturns, but we have targeted product and market areas that we believe 
have the ability to offer above average industry performance. 

We work with third parties to manufacture and assemble our integrated circuits (“ICs”). This has enabled us to limit our 
capital expenditures and fixed costs, while focusing our engineering and design resources on our core strengths. 

Following  the  introduction  of  a  product,  our  sales  cycle  generally  takes  a  number  of  quarters  after  we  receive  an  initial 
customer order for a new product to ramp up. Typical lead time for orders is fewer than 90 days. These factors, combined 
with the fact that orders in the semiconductor industry can typically be cancelled or rescheduled without significant penalty 
to the customer, make the forecasting of our orders and revenue difficult. 

We derive most of our revenue from sales through distribution arrangements and direct sales to customers in Asia, where 
the products we produce are incorporated into end-user products. For the years ended December 31, 2013 and 2012, 90% 
and 89% of our revenue, respectively, was attributable to direct or indirect sales to customers in Asia. We derive a majority 
of our revenue from the sales of our DC to DC converter product family which services the communications, storage and 
computing, consumer and industrial markets. We believe our ability to achieve revenue growth will depend, in part, on our 
ability  to  develop  new  products,  enter  new  market  segments,  gain  market  share,  manage  litigation  risk,  diversify  our 
customer base and successfully secure manufacturing capacity. 

Critical Accounting Policies and Estimates 

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial 
statements,  which  have  been  prepared  in  accordance  with  generally  accepted  accounting  principles  in  the  U.S.  The 
preparation of these financial statements requires us to make estimates and judgments that affect the reported amount of 
assets,  liabilities,  revenue  and  expenses,  and  related  disclosure  of  contingent  assets  and  liabilities.  We  evaluate  our 
estimates  on  an  on-going  basis,  including  those  related  to  revenue  recognition,  stock-based  compensation,  financial 
instruments,  inventories,  income  taxes,  warranty  obligations  and  contingencies.  We  base  our  estimates  on  historical 
experience  and  on  various  other  assumptions  that  are  believed  to  be  reasonable  under  the  circumstances,  the  results  of 
which  form  the  basis  for  making  the  judgments  about  the  carrying  values  of  assets  and  liabilities  that  are  not  readily 
apparent  from  other  sources.  Estimates  and  judgments  used  in  the  preparation  of  our  financial  statements  are,  by  their 
nature,  uncertain  and  unpredictable,  and  depend  upon,  among  other  things,  many  factors  outside  of  our  control,  such  as 
demand for our products and economic conditions.  Accordingly, our estimates and judgments may prove to be incorrect 
and actual results may differ, perhaps significantly, from these estimates. 

We believe the following critical accounting policies reflect our more significant judgments used in the preparation of our 
consolidated financial statements. 

Revenue Recognition. We recognize revenue when the following four basic criteria are met: (1) persuasive evidence of an 
arrangement exists; (2) delivery has occurred or services have been rendered; (3) the fee is fixed or determinable; and (4) 
collectability is reasonably assured. Determination of criteria (3) and (4) are based on management’s judgment regarding 
the  fixed  nature  of  the  fee  charged  for  products  delivered  and  the  collectability  of  those  fees.  The  application  of  these 
criteria  has  resulted  in  us  generally  recognizing  revenue  upon  shipment  (when  title  passes)  to  customers,  including 
distributors,  original  equipment  manufacturers  and  electronic  manufacturing  service  providers.  Should  changes  in 
conditions cause management to determine these criteria are not met for certain future transactions, revenue recognized for 
any reporting period could be adversely impacted. 

Our  revenue  consists  primarily  of  sales  of  assembled  and  tested  finished  goods.  We  also  sell  die  in  wafer  form  to  our 
customers and value-added resellers, and we receive royalty revenue from third parties and value-added resellers. 

For the years ended December 31, 2013 and 2012, approximately 91% of our distributor sales, including sales to our value-
added  resellers,  were  made  through  distribution  arrangements  with  third  parties.  These  arrangements  do  not  include  any 
special payment terms (our normal payment terms are 30-45 days for our distributors), price protection or exchange rights. 
27 

  
  
  
   
  
  
  
  
   
  
Returns are limited to our standard product warranty. Certain of our large distributors have contracts that include limited 
stock rotation rights that permit the return of a small percentage of the previous six months’ purchases. 

For  the  years  ended  December  31,  2013  and  2012,  approximately  9%  of  our  distributor  sales  were  made  through  small 
distributors primarily based on purchase orders. These distributors typically have no stock rotation rights. 

We maintain a sales reserve for stock rotation rights, which is based on historical experience of actual stock rotation returns 
on a per distributor basis, where available, and information related to products in the distribution channel. This reserve is 
recorded at the time of sale. Historically, these returns were not material to our consolidated financial statements.  In the 
future,  if  we  are  unable  to  estimate  our  stock  rotation  returns  accurately,  we  may  have  to  recognize  revenue  when  the 
distributors sell such inventory to end customers. 

We generally recognize revenue upon shipment of products to the distributors for the following reasons: 

(1) 

Our price is fixed or determinable at the date of sale. We do not offer special payment terms, price protection or
price adjustments to distributors when we recognize revenue upon shipment.  
Our distributors are obligated to pay us and this obligation is not contingent on the resale of our products. 
The distributors’ obligation is unchanged in the event of theft or physical destruction or damage to the products.
Our distributors have stand-alone economic substance apart from our relationship. 

(2) 
(3) 
(4) 
(5)  We do not have any obligations for future performance to directly bring about the resale of our products by the

(6) 

distributors. 
The amount of future returns can be reasonably estimated. We have the ability and the information necessary to 
track  inventory  sold  to  and  held  at  our  distributors.  We  maintain  a  history  of  returns  and  have  the  ability  to
estimate the stock rotation returns on a quarterly basis. 

If  we  enter  into  arrangements  that  have  rights  of  return  that  are  not  estimable,  we  recognize  revenue  under  such 
arrangements  only  after  the  distributors  have  sold  our  products  to  end  customers.  Two  of  our U.S.  distributors  have 
distribution agreements where revenue is recognized upon sale by these distributors to their end customers because these 
distributors have certain rights of return which management believes are not estimable. The deferred revenue balance from 
these  two  distributors  as  of  December  31,  2013  and  2012  was  $1.7  million  and  $1.6  million,  respectively.  The  deferred 
costs as of December 31, 2013 and 2012 were $0.2 million.  

We generally  provide  a  one  to  two-year  warranty  against  defects  in  materials  and  workmanship.  Under  this 
warranty, we will repair the goods, provide replacements at no charge, or, under certain circumstances, provide a refund to 
the customer for defective products. Estimated warranty returns and warranty costs are based on historical experience and 
are recorded at the time product revenue is recognized. 

Inventory Valuation. We value our inventory at the lower of the standard cost (which approximates actual cost on a first-
in,  first-out  basis)  or  its  current  estimated  market  value.  We  write  down  inventory  for  obsolescence  or  lack  of  demand, 
based on assumptions about future demand and market conditions. If actual market conditions are less favorable than those 
projected by management, additional inventory write-downs may be required. Conversely, if market conditions are more 
favorable, inventory may be sold that was previously reserved.  

Accounting for Income Taxes. ASC 740-10, Income Taxes – Overall, prescribes a recognition threshold and measurement 
attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax 
return. This interpretation also provides guidance on classification, interest and penalties, accounting in interim periods and 
disclosure. In accordance with ASC 740-10, we recognize federal, state and foreign current tax liabilities or assets based on 
our estimate of taxes payable or refundable in the current fiscal year by tax jurisdiction. We also recognize federal, state 
and foreign deferred tax assets or liabilities for our estimate of future tax effects attributable to temporary differences and 
carryforwards. We record a valuation allowance to reduce any deferred tax assets by the amount of any tax benefits that, 
based on available evidence and judgment, are not expected to be realized. 

Our calculation of current and deferred tax assets and liabilities is based on certain estimates and judgments and involves 
dealing  with  uncertainties  in  the  application  of  complex  tax  laws.  Our  estimates  of  current  and  deferred  tax  assets  and 
liabilities  may  change  based,  in  part,  on  added  certainty  or  finality  or  uncertainty  to  an  anticipated  outcome,  changes  in 
accounting or tax laws in the U.S., or foreign jurisdictions where we operate, or changes in other facts or circumstances. In 
addition, we recognize liabilities for potential U.S. and foreign income tax for uncertain income tax positions taken on our 
tax  returns  if  it  has  less  than  a  50%  likelihood  of  being  sustained.  If  we  determine  that  payment  of  these  amounts  is 
unnecessary or if the recorded tax liability is less than our current assessment, we may be required to recognize an income 
28 

  
   
  
  
  
  
  
  
  
  
  
  
  
  
  
tax benefit or additional income tax expense in our financial statements in the period such determination is made. We have 
calculated  our  uncertain  tax  positions  which  were  attributable  to  certain  estimates  and  judgments  primarily  related  to 
transfer pricing, cost sharing and our international tax structure exposure. 

As  of  December  31,  2013  and  2012,  we  had  a  valuation  allowance  of  $16.7  million  and  $12.5  million,  respectively, 
attributable to management’s determination that it is more likely than not that most of the deferred tax assets in the U.S. 
will not be realized. Should it be determined that additional amounts of the net deferred tax asset will not be realized in the 
future, an adjustment to increase the deferred tax asset valuation allowance will be charged to income in the period such 
determination is made. Likewise, in the event we were to determine that it is more likely than not that we would be able to 
realize our deferred tax assets in the future in excess of our net recorded amount, an adjustment to the valuation allowance 
for the deferred tax asset would increase income in the period such determination was made. 

As a result of the cost sharing arrangements with our international subsidiaries (cost share arrangements), relatively small 
changes  in  costs  that  are  not  subject  to  sharing  under  the  cost  share  arrangements  can  significantly  impact  the  overall 
profitability of the U.S. entity. Because of the U.S. entity’s inconsistent earnings history and uncertainty of future earnings, 
we have determined that it is more likely than not that the U.S. deferred tax benefits will not be realized. 

We incurred significant stock-based compensation expense, which related to employee stock purchase plans for which no 
corresponding tax benefit will be recognized unless a disqualifying disposition occurs. Disqualifying dispositions result in a 
reduction of income tax expense in the period when the disqualifying disposition occurs. Tax benefits related to realized tax 
deductions in excess of previously expensed stock compensation are recorded as an addition to paid-in-capital. 

Contingencies. We  are  a  party  to  actions  and  proceedings  incidental  to  our  business  in  the  ordinary  course  of  business, 
including  litigation  regarding  our  intellectual  property,  challenges  to  the  enforceability  or  validity  of  our  intellectual 
property and claims that our products infringe on the intellectual property rights of others. The pending proceedings involve 
complex questions of fact and law and will require the expenditure of significant funds and the diversion of other resources 
to  prosecute  and  defend.  In  addition,  from  time  to  time,  we  become  aware  that  we  are  subject  to  other  contingent 
liabilities. When this occurs, we will evaluate the appropriate accounting for the potential contingent liabilities using ASC 
450-20-25,  Contingencies  –  Loss  Contingencies  –  Recognition,  to  determine  whether  a  contingent  liability  should  be 
recorded. In making this determination, management may, depending on the nature of the matter, consult with internal and 
external legal counsel and technical experts. Based on the facts and circumstances in each matter, we use our judgment to 
determine whether it is probable that a contingent loss has occurred and whether the amount of such loss can be estimated. 
If  we  determine  a  loss  is  probable  and  estimable,  we  record  a  contingent  loss  in  accordance  with  ASC  450-20-25-2.  In 
determining the amount of a contingent loss, we take into account advice received from experts for each specific matter 
regarding  the  status  of  legal  proceedings,  settlement  negotiations  (which  may  be  ongoing),  prior  case  history  and  other 
factors. Should the judgments and estimates made by management need to be adjusted as additional information becomes 
available,  we  may  need  to  record  additional  contingent  losses  that  could  materially  and  adversely  impact  our  results  of 
operations.  Alternatively,  if  the  judgments  and  estimates  made  by  management  are  adjusted,  for  example,  if  a  particular 
contingent loss does not occur, the contingent loss recorded would be reversed which could result in a favorable impact on 
our results of operations. 

Stock-Based  Compensation.  We  account  for  stock-based  compensation  under  the  provisions  of  ASC  718-10-30, 
Compensation  –  Stock  Compensation  –  Overall  –  Initial  Measurement.  This  standard  requires  us  to  measure  the  cost  of 
employee  services  received  in  exchange  for  an  award  of  equity  instruments  based  on  the  grant-date  fair  value  of  the 
award. We use the Black-Scholes model to estimate the fair value of our options and employee stock purchase plan. The 
fair value of our time-based and performance-based restricted stock units is based on the grant date share price. The fair 
value of our market-based restricted stock units is estimated using a Monte Carlo simulation model. 

29 

   
  
  
  
  
  
 
 
We recognize compensation expense equal to the grant-date fair value for all share-based payment awards that are expected 
to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire awards, unless the 
awards  are  subject  to  performance  or  market  conditions,  in  which  case  we  recognize  compensation  expense  over  the 
requisite service period of each separate vesting tranche. For our performance-based awards, we recognize compensation 
expense  when  it  becomes  probable  that  the  performance  criteria  specified  in  the  plan  will  be  achieved.  For  our  market-
based  awards,  compensation  expense  is  not  reversed  if  the  market  condition  is  not  satisfied.  The  amount  of  stock-based 
compensation that we recognize is also based on an expected forfeiture rate. If there is a difference between the forfeiture 
assumptions used in determining stock-based compensation expense and the actual forfeitures which become known over 
time, we may change the forfeiture rate, which could have a significant impact on our stock-based compensation expense.  

Recent Accounting Pronouncements 

In  June  2011,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  Accounting  Standards  Update  (“ASU”)  No. 
2011-05,  Presentation  of  Comprehensive  Income.  The  standard  requires  entities  to  have  more  detailed  reporting  of 
comprehensive income. Specifically, the standard allows an entity to present components of net income and components of 
other  comprehensive  income  in  one  continuous  statement  of  comprehensive  income,  or  in  two  separate,  but  consecutive 
statements.  The  guidance  became  effective  in  the  first  quarter  of  2013  and  applied  retrospectively.  The  adoption  of  this 
guidance did not have a material impact on our consolidated financial position, results of operations, or cash flows. 

In  February  2013,  the  FASB  issued  ASU  No.  2013-02,  Reporting  of  Amounts  Reclassified  Out  of  Accumulated  Other 
Comprehensive  Income.  This  ASU  adds  new  disclosure  requirements  for  items  reclassified  out  of  accumulated  other 
comprehensive income. The ASU was effective for fiscal years, and interim periods within those years, beginning on or 
after December 15, 2012 and must be applied prospectively. We adopted this standard on January 1, 2013 and the adoption 
did not have a material impact on our consolidated financial position, results of operations or cash flows. 

In  July  2013,  the  FASB  issued  ASU  No.  2013-11,  Presentation  of  an  Unrecognized  Tax  Benefit  When  a  Net  Operating 
Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The standard gives guidance on the financial 
statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax 
credit  carryforward  exists,  with  the  purpose  of  reducing  diversity  in  practice.  The  standard  requires  the  netting  of 
unrecognized tax benefits against a deferred tax asset for a loss or other carryforward that would apply in settlement of the 
uncertain tax positions. The guidance will become effective in the first quarter of 2014 and should be applied prospectively. 
Early  adoption  is  permitted.  We  do  not  expect  that  the  adoption  of  this  guidance  will  have  a  material  impact  on  our 
consolidated financial position, results of operations, or cash flows. 

Results of Operations 

The following table summarizes our results of operations: 

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

Research and development .....    
Selling, general and 

2013

Year Ended December 31, 
2012
(in thousands, except percentages) 

2011

238,091     
110,190     
127,901     

100.0 %  $
46.3       
53.7       

213,813      
100,665      
113,148      

100.0 %   $  196,519      
94,925      
101,594      

47.1        
52.9        

100.0 %
48.3   
51.7   

49,733      

20.9       

48,796      

22.8        

44,518      

22.7   

administrative .....................    

54,624      

22.9       

50,018      

23.4        

40,280      

20.5   

Litigation expense (benefit), 

net ......................................    
Total operating expenses .    
Income from operations ................    
Interest and other income, net .......    
Income before income taxes ..........    
Income tax provision .....................    
Net income ....................................  $

(371)    
103,986     
23,915      
92      
24,007      
1,109      
22,898      

(0.2)     
43.6       
10.1       
0.0       
10.1       
0.5       
9.6 %  $

(2,945)    
95,869      
17,279      
611      
17,890      
2,134      
15,756      

(1.4)      
44.8        
8.1        
0.3        
8.4        
1.0        
7.4 %   $ 

3,379      
88,177      
13,417      
309      
13,726      
425      
13,301      

1.7   
44.9   
6.8   
0.2   
7.0   
0.2   
6.8 %

30 

   
  
  
  
  
  
  
  
  
 
  
  
 
 
     
 
  
  
 
      
        
         
        
         
        
  
   
 
 
Revenue 

The following table summarizes our revenue by product family: 

Year Ended December 31,

      Percentage Change  

Product Family 

2013 

Revenue

2012

Revenue

2011

Revenue 

     % of 

    % of 

    % of 

From 
2012 
to 2013

From 
2011 
to 2012

DC to DC products ........  $ 211,337       
Lighting control 

products .....................     26,754       
Total ..............................  $ 238,091       

(In thousands, except percentages) 

88.8%  $ 188,736      

88.3%  $ 170,032      

86.5%     12.0%      

11.0%  

11.2%    25,077      
100.0%  $ 213,813      

11.7%    26,487      
100.0%  $ 196,519      

13.5%    

6.7%      
100.0%     11.4%      

(5.3%)
8.8%  

Revenue for the year ended December 31, 2013 was $238.1 million, an increase of $24.3 million, or 11.4%, from $213.8 
million for the year ended December 31, 2012. This increase was due to higher sales of both DC to DC and lighting control 
products,  as  higher  unit  shipments  were  offset  in  part  by  lower  average  selling  prices. Revenue  from  our  DC  to  DC 
products was $211.3 million for the year ended December 31, 2013, an increase of $22.6 million, or 12.0%, from the same 
period in 2012. This increase was primarily due to higher sales of our DC to DC converters, Mini-Monsters, PMICs and 
battery charger products. Revenue from our lighting control products was $26.8 million for the year ended December 31, 
2013,  an  increase  of  $1.7  million,  or  6.7%,  compared  with  the  same  period  in  2012.  This  increase  was  primarily  due  to 
higher sales of our WLED products, offset in part by decreased demand for our CCFLC products. 

Revenue for the year ended December 31, 2012 was $213.8 million, an increase of $17.3 million, or 8.8%, from $196.5 
million  for  the  year  ended December  31, 2011. This  increase  was primarily  due to  increased demand  for our DC  to  DC 
products. Revenue from our DC to DC products was $188.7 million, an increase of $18.7 million, or 11.0%, over the same 
period in 2011. This increase was primarily due to increased demand for our DC to DC converters, Mini-Monster and CLS 
products. Sales of our lighting control products for the year ended December 31, 2012 were down by 5.3% compared to the 
same period in 2011. This decrease was primarily due to reductions in demand for our CCFL and WLED products. 

Cost of Revenue and Gross Margin 

Cost  of  revenue  consists  primarily  of  costs  incurred  to  manufacture,  assemble  and  test  our  products,  as  well  as  other 
overhead costs and stock-based compensation expenses. 

Year Ended December 31,

      Percentage Change

2013

Cost of revenue .....................................................  $
Cost of revenue as a percentage of revenue ..........   
Gross profit ...........................................................  $
Gross margin .........................................................   

110,190     $
46.3%   
127,901     $
53.7%   

From 2012 
2012
to 2013 
2011
(in thousands, except percentages) 
100,665      $
47.1%   
113,148      $
52.9%   

94,925        
48.3%    
101,594        
51.7%    

9.5%   

13.0%   

From 2011
to 2012

6.0%

11.4%

Gross profit as a percentage of revenue, or gross margin, was 53.7% for the year ended December 31, 2013, compared to 
52.9%  for  the  year  ended  December  31,  2012.  The  increase  in  gross  margin  year-over-year  was  primarily  due  to an 
improved product mix and lower inventory reserves, offset in part by lower overhead capitalization, compared to the same 
period in 2012. 

Gross  margin  was  52.9%  for  the  year  ended  December  31,  2012,  compared  to  51.7%  for  the  year  ended  December  31, 
2011. The increase in gross profit margin year-over-year was primarily due to lower inventory reserves and an improved 
product mix compared to the same period in 2011. 

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Research and Development   

Research  and  development  expenses  consist  of  salary  and  benefit  expenses  and  stock-based  compensation  expenses  for 
design and product engineers, expenses related to new product development, and related facility costs. 

Year Ended December 31,

      Percentage Change

2013

From 2012 
to 2013 
2012
2011
(in thousands, except percentages) 

From 2011
to 2012

Research and development ("R&D") ....................  $
R&D as a percentage of revenue ...........................   

49,733     $
20.9%   

48,796      $
22.8%   

44,518        
22.7%    

1.9%   

9.6%

R&D  expenses  were  $49.7  million,  or  20.9%  of  revenue,  for  the  year  ended  December  31,  2013  and  $48.8  million,  or 
22.8%  of  revenue,  for  the  year  ended  December  31,  2012.  R&D  expenses  increased  year-over-year  primarily  due  to  an 
increase  in  depreciation  and  salary  and  benefit  expenses.  Our  R&D  headcount  as  of  December  31,  2013  was  449 
employees, compared to 388 employees as of December 31, 2012. 

R&D  expenses  were  $48.8  million,  or  22.8%  of  revenue,  for  the  year  ended  December  31,  2012  and  $44.5  million,  or 
22.7%  of  revenue,  for  the  year  ended  December  31,  2011.  R&D  expenses  increased  year-over-year  primarily  due  to  an 
increase in salary and benefit expenses, stock-based compensation expenses and expenses associated with increased new 
product development. Our R&D headcount as of December 31, 2012 was 388 employees, compared to 374 employees as of 
December 31, 2011. 

Selling, General and Administrative 

Selling, general and administrative expenses include salary and benefit expenses and stock-based compensation expenses 
for sales, marketing and administrative personnel, sales commissions, travel expenses, related facilities costs, and outside 
legal and accounting fees. 

Year Ended December 31,

      Percentage Change

2013

From 2012 
2012
to 2013 
2011
(in thousands, except percentages) 

From 2011
to 2012

Selling, general and administrative ("SG&A") .....  $
SG&A as a percentage of revenue ........................   

54,624     $
22.9%   

50,018      $
23.4%   

40,280        
20.5%    

9.2%   

24.2%

SG&A  expenses  were  $54.6 million, or 22.9% of revenue,  for  the  year ended December  31, 2013  and  $50.0  million, or 
23.4% of revenue, for the year ended December 31, 2012. SG&A expenses increased year-over-year primarily due to an 
increase  in  stock-based  compensation  expenses,  salary  and  benefit  expenses  and  sales  commissions  on  higher  revenue, 
offset  in  part  by  lower  professional  service  fees.  Our  SG&A  headcount  as  of  December  31,  2013  was  249  employees, 
compared to 250 employees as of December 31, 2012. 

SG&A  expenses  were  $50.0 million, or 23.4% of revenue,  for  the  year ended December  31, 2012  and  $40.3  million, or 
20.5% of revenue, for the year ended December 31, 2011. SG&A expenses increased year-over-year primarily due to an 
increase  in  salary  and  benefit  expenses,  stock-based  compensation  expenses,  professional  service  fees  and  sales 
commissions  on  higher  revenue. Our  SG&A  headcount  as  of  December  31,  2012  was  250  employees,  compared  to  238 
employees as of December 31, 2011. 

Litigation Expense (Benefit), Net 

Litigation expense (benefit), net ............................  $
Litigation expense (benefit), net, as a percentage 

Year Ended December 31,

Percentage Change

2013

From 2012 
2012
to 2013 
2011
(in thousands, except percentages) 

From 2011
to 2012

(371)   $

(2,945)   $

3,379        

(87.4%)    

(187.2%)

of revenue..........................................................   

(0.2%)    

(1.4%)    

1.7% 

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Litigation benefit, net, was ($371,000), or (0.2%) of revenue, for the year ended December 31, 2013, compared to a net 
litigation  benefit  of  ($2.9)  million,  or  (1.4%)  of  revenue,  for  the  year  ended  December  31,  2012.  The  year-over-year 
decrease  in  litigation  benefit  was  primarily  due  to  $0.8  million  received  in  2013 in  connection  with  the  settlement  from 
Silergy,  compared  with  $3.7  million  received  in  2012  in  connection  with  settlements  from  Linear  and  Silergy. These 
payments  were  recorded  as  credits  to  litigation  expense  (benefit),  net,  in  the  Consolidated  Statements  of  Operations.  No 
further amount was due to us from these two lawsuits as of December 31, 2013. 

Litigation benefit, net, was ($2.9) million, or (1.4%) of revenue, for the year ended December 31, 2012, compared to a net 
expense  of  $3.4  million,  or  1.7%  of  revenue,  for  the  year  ended  December  31,  2011.  The  year-over-year  decrease  in 
litigation  expense  was  primarily  due  to  $3.7  million  received  in  connection  with  settlements  from  Linear  and  Silergy  in 
2012.  These  payments  were  recorded  as  credits  to  litigation  expense  (benefit),  net,  in  the  Consolidated  Statements  of 
Operations.  During  the  year  ended  December  31,  2011,  we  incurred  additional  legal  expenses  primarily relating  to  our 
lawsuits involving O2 Micro.  

For a more complete description of our current material litigation matters, please see Part I, Item 3 “Legal Proceedings” 
and Note 10 “Litigation” of Notes to Consolidated Financial Statements. 

Interest and Other Income, Net 

For  the  years  ended  December  31,  2013,  2012  and  2011,  interest  and  other  income,  net,  was  $92,000,  $611,000  and 
$309,000,  respectively.  Interest  and  other  income,  net,  decreased  from  2012  to  2013  primarily  due  to  higher  foreign 
currency exchange losses and lower interest income in 2013 compared to 2012. Interest and other income, net, increased 
from  2011  to 2012 primarily  due  to  lower foreign  currency  exchange  losses, partially  offset by  lower  interest  income  in 
2012 compared to 2011.  

Income Tax Provision  

The income tax provision for the year ended December 31, 2013 was $1.1 million or 4.6% of our income before income 
taxes.  This  differs  from  the  federal  statutory  rate  primarily  because  our  foreign  income  was  taxed  at  lower  rates  and 
because of the benefit that we realized as a result of stock options exercised and restricted stock units released and changes 
in our valuation allowance during the year. 

The income tax provision for the year ended December 31, 2012 was $2.1 million or 11.9% of our income before income 
taxes.  This  differs  from  the  federal  statutory  rate  primarily  because  our  foreign  income  was  taxed  at  lower  rates. The 
income tax provision for year ended December 31, 2011 was $0.4 million or 3.1% of our income before income taxes. This 
differs from the federal statutory rate primarily because our foreign income was taxed at lower rates. 

For additional information, see Note 8 “Income Taxes” of the Notes to Consolidated Financial Statements. 

Liquidity and Capital Resources 

Cash and cash equivalents ................................................................................................  $
Short-term investments ....................................................................................................   
Total cash, cash equivalents and short-term investments ..........................................  $
Percentage of total assets ...................................................................................   

Total current assets ...........................................................................................................  $
Total current liabilities .....................................................................................................   
Working capital ..................................................................................................  $

As of December 31,

2013 

2012

(In thousands) 

101,213      $
125,126        
226,339      $
61.4%    

292,086      $
(38,489)      
253,597      $

75,104   
85,521   
160,625   
55.9%

214,301   
(23,460) 
190,841   

As  of  December  31,  2013,  we  had  cash  and  cash  equivalents  of  $101.2  million  and  short-term  investments  of  $125.1 
million,  compared  with  cash  and  cash  equivalents  of  $75.1  million  and  short-term  investments  of  $85.5  million  as  of 
December 31, 2012. The increase of $26.1 million in cash and cash equivalents was primarily due to cash generated from 
operating activities, a cash payment received in connection with the O2 Micro litigation, and proceeds from stock option 
exercises and stock purchases under our employee stock purchase plan. This increase was partially offset by repurchases of 

33 

   
  
  
  
  
  
  
  
  
  
  
 
 
  
 
     
 
  
 
 
  
      
         
  
  
our common stock, property and equipment purchases and investment in short-term securities. As of December 31, 2013, 
$58.2  million  of  cash  and  cash  equivalents  and  $17.0  million  of  short-term  investments  were  held  by  our  international 
subsidiaries. If these funds are needed for our operations in the U.S., we may be required to accrue and pay U.S. taxes to 
repatriate these funds. However, our intent is to indefinitely reinvest these funds outside of the U.S. and our current plans 
do not demonstrate a need to repatriate them to fund our U.S. operations. 

The  significant  components  of  our  working  capital  are  cash  and  cash  equivalents,  short-term  investments,  accounts 
receivable, inventories, deferred income taxes and prepaid expenses and other current assets, reduced by accounts payable, 
accrued and other current liabilities, deferred revenue and customer prepayments. 

As of December 31, 2013, we had working capital of $253.6 million, compared with working capital of $190.8 million as 
of December 31, 2012. The $62.8 million increase in working capital was due to a $77.8 million increase in current assets, 
net of a $15.0 million increase in current liabilities. The increase in current assets was primarily due to an increase in cash 
and  cash  equivalents, short-term  investments,  accounts receivable  and  inventories.  The  increase  in  current  liabilities  was 
primarily due to an increase in accrued compensation and other accrued liabilities, which included a cash payment received 
from the O2 Micro litigation.  

Summary of Cash Flows 

The table below summarizes the cash and cash equivalents provided by (used in) in our operating, investing and financing 
activities: 

2013

Year Ended December 31,
2012 
(In thousands) 

2011

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

60,686     $
(54,324)    
18,850      
897      
26,109     $

24,912     $
(26,837 )     
(19,553 )     
211       
(21,267 )   $

43,685  
36,222  
(31,975)
429  
48,361  

For the year ended December 31, 2013, net cash provided by operating activities was $60.7 million, primarily due to cash 
contributed from our operating results during the year and a cash payment of $9.5 million received in connection with the 
O2 Micro litigation recorded as a liability as of December 31, 2013. These increases were partially offset by increases in 
both inventories and accounts receivable. The increase in accounts receivable resulted in large measure from an increase in 
shipments. The increase in inventories was primarily due to an increase in strategic wafer and die bank inventories as well 
as finished goods to meet anticipated future demand.  Net cash provided by operating activities was $24.9 million for the 
year ended December 31, 2012, primarily reflecting cash contributed from our operating results, partially offset by $27.8 
million increase in working capital requirements. For the year ended December 31, 2011, net cash provided by operating 
activities was $43.7 million primarily reflecting cash generated from our operating results.  

For  the  year  ended  December  31,  2013,  net  cash  used  in  investing  activities  was  $54.3  million,  primarily  reflecting  net 
purchases  of  short-term  investments  and  purchases  of  property  and  equipment,  partially  offset  by  proceeds  from  the 
redemption  of  auction-rate  securities.  For  the  year  ended  December  31,  2012,  net  cash  used  in  investing  activities  was 
$26.8 million related to our investment in equipment, building improvements at our new headquarters located in San Jose, 
California  and  net  purchases  of  short-term  investments,  partially  offset  by  proceeds  from  the  redemption  of  auction-rate 
securities.  For the  year  ended  December 31,  2011, net  cash  provided by investing  activities  was  $36.2  million  primarily 
from net proceeds from the sales of short-term investments and the redemption of auction-rate securities, partially offset by 
purchases of property and equipment. 

We use professional investment management firms to manage the majority of our invested cash. Our fixed income portfolio 
is primarily invested in U.S. government securities and auction-rate securities. The balance of the fixed income portfolio is 
managed internally and invested primarily in money market securities for working capital purposes. 

34 

   
  
  
  
  
  
 
 
  
 
   
    
 
  
 
 
  
    
  
  
 
 
Our investment portfolio as of December 31, 2013 included $9.9 million in government-backed student loan auction-rate 
securities, net of impairment charges of $390,000, of which $360,000 was temporary and $30,000 was recorded as other-
than-temporary. This compares to an investment balance as of December 31, 2012 of $11.8 million in government-backed 
student loan auction-rate securities, net of impairment charges of $520,000, of which $490,000 was temporary and $30,000 
was recorded as other-than-temporary. For the years ended December 31, 2013 and 2012, we redeemed $2.0 million and 
$2.1 million of auction-rate securities at par. 

For the year ended December 31, 2013, net cash provided by financing activities was $18.9 million, primarily reflecting 
$40.0 million of cash proceeds from stock option exercises and stock purchases through our employee stock purchase plan, 
partially offset by $20.6 million used in the repurchases of our common stock. Net cash used in financing activities for the 
year  ended December  31, 2012 was $19.6 million,  primarily  reflecting the  $35.7  million  cash dividend paid  to  common 
stockholders  on  December  28,  2012,  partially  offset  by  $15.2  million  of  cash  proceeds  from  stock  option  exercises  and 
stock  purchases  through  our  employee  stock  purchase  plan.  Net  cash  used  in  financing  activities  for  the  year  ended 
December 31, 2011 was $32.0 million, primarily reflecting $38.5 million of stock repurchases, which was partially offset 
by  $6.5  million  of  cash  proceeds  from  stock  option  exercises  and  stock purchases  through  our  employee  stock  purchase 
plan.  

In  July  2013,  the  Board  of  Directors  approved  a  stock  repurchase  program  that  authorizes  us  to  repurchase  up  to  $100 
million  in  the  aggregate  of  our  common  stock  through  June  30,  2015.  All  shares  are  retired  upon  repurchase.  From  the 
inception of  the  program  through  December  31, 2013, we  repurchased  a  total  of 663,802 shares for $20.6  million, at  an 
average price of $31.06 per share. As of December 31, 2013, $79.4 million remained available for future repurchases under 
the program. 

Although cash requirements will fluctuate based on the timing and extent of many factors such as those discussed above, 
we believe that cash generated from operations, together with the liquidity provided by existing cash balances and short-
term  investments,  will  be  sufficient  to  satisfy  our  liquidity  requirements  for  the  next  12 months.  For  further  details 
regarding our operating, investing and financing activities, see the Consolidated Statements of Cash Flows. 

In the future, in order to strengthen our financial position, in the event of unforeseen circumstances, or in the event we need 
to fund our growth in future financial periods, we may need to raise additional funds by any one or a combination of the 
following:  issuing  equity  securities,  issuing  debt  or  convertible  debt  securities,  incurring  indebtedness  secured  by  our 
assets, or selling certain product lines and/or portions of our business. There can be no guarantee that we will be able to 
raise additional funds on terms acceptable to us, or at all. 

From  time  to  time,  we  have  engaged  in  discussions  with  third  parties  concerning  potential  acquisitions  of  product  lines, 
technologies,  businesses  and  companies,  and  we  continue  to  consider  potential  acquisition  candidates.  Any  such 
transactions  could  involve  the  issuance  of  a  significant  number  of  new  equity  securities,  debt,  and/or  cash 
consideration.  We  may  also  be  required  to  raise  additional  funds  to  complete  any  such  acquisition,  through  either  the 
issuance  of  equity  and  debt  securities  or  incurring  indebtedness  secured  by  our  assets.  If  we  raise  additional  funds  or 
acquire  businesses  or  technologies  through  the  issuance  of  equity  securities,  our  existing  stockholders  may  experience 
significant dilution. 

Contractual Obligations 

The following table summarizes our contractual obligations at December 31, 2013 (in thousands): 

Total

2014

2015

2016 

Operating leases ....................................................  $
Outstanding purchase commitments .....................   
Other obligations ...................................................   
Total ......................................................................  $

2,019     $
12,350      
1,250      
15,619     $

739     $
12,350      
400      
13,489     $

600     $ 
-      
300       
900     $ 

35 

2017 and 
Thereafter
113  
- 
250  
363  

567     $
-      
300      
867     $

  
   
  
  
  
  
  
  
  
 
   
   
    
   
 
  
 
 
Our outstanding purchase commitments primarily consist of wafer purchases from our foundries and assembly services. As 
of December 31, 2013, the outstanding balance was $12.4 million compared with $15.5 million as of December 31, 2012.  

Because  of  the  uncertainty  as  to  the  timing  of  payments  related  to  our  liabilities  for  unrecognized  tax  benefits,  we  have 
excluded estimated obligations of $5.5 million from the table above. In addition, because of the uncertainty as to the timing 
of  distributions  related  to  our  liabilities  for  the  employee  deferred  compensation  plan,  we  have  excluded  estimated 
obligations of $0.6 million from the table above. 

Off Balance Sheet Arrangements 

As  of  December  31,  2013,  we  had  no  off-balance  sheet  arrangements  as  defined  in  Item  303(a)(4)  of  the  Securities  and 
Exchange Commission’s Regulation S-K. 

ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 

Interest Rate Risk 

Our cash equivalents and investments are subject to market risk, primarily interest rate and credit risk. Our investments are 
managed by outside professional managers within investment guidelines set by us. Such guidelines include security type, 
credit  quality  and  maturity  and  are  intended  to  limit  market  risk  by  restricting  our  investments  to  high  quality  debt 
instruments with relatively short-term maturities. Fluctuations in interest rates of 10% would not have a material impact on 
our results of operations. 

We do not use derivative financial instruments in our investment portfolio. Investments in debt securities are classified as 
available-for-sale. For available-for-sale investments, no gains or losses are recognized by us in our results of operations 
due  to  changes  in  interest  rates  unless  such  securities  are  sold  prior  to  maturity  or  are  determined  to  be  other-than-
temporarily impaired. Available-for-sale investments are reported at fair value with the related unrealized gains or losses 
being included in accumulated other comprehensive income, a component of stockholders’ equity.  

Long-Term Investments 

As  of December  31,  2013,  all  of  our  holdings  in  auction  rate  securities,  which have  a  face  value  of  $10.3  million,  have 
failed  to  reset  as  a  result  of  current  market  conditions.  Should  these  auctions  continue  to  fail  and  if  the  credit  rating  for 
these  securities  decline,  a  10%  decline  in  the  fair  value  could  impact  our  results  of  operations  by  approximately  $1.0 
million. 

Foreign Currency Exchange Risk 

Our  sales  outside  the  United  States  are  transacted  in  U.S.  dollars.  Accordingly,  our  sales  are  not  generally  impacted  by 
foreign  currency  rate  changes.  The  functional  currency  of  the  Company’s  offshore  operations  is  the  local  currency, 
primarily the Chinese Yuan and the New Taiwan Dollar. To date, fluctuations in foreign currency exchange rates have not 
had a material impact on our results of operations.  

36 

  
  
  
  
  
  
  
   
  
  
  
   
 
 
ITEM 8.     FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA 

MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED FINANCIAL STATEMENTS 

Contents 

Report of Independent Registered Public Accounting Firm .........................................................................................
Consolidated Balance Sheets .......................................................................................................................................
Consolidated Statements of Operations .......................................................................................................................
Consolidated Statements of Comprehensive Income ...................................................................................................
Consolidated Statements of Stockholders’ Equity .......................................................................................................
Consolidated Statements of Cash Flows ......................................................................................................................
Notes to Consolidated Financial Statements ................................................................................................................

Page
38 
39 
40 
41 
42 
43 
44 

37 

  
  
  
   
    
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of 
Monolithic Power Systems, Inc. 
San Jose, California 

We have audited the accompanying consolidated balance sheets of Monolithic Power Systems, Inc. and subsidiaries (the 
"Company")  as  of  December  31,  2013  and  2012,  and  the  related  consolidated  statements  of  operations,  comprehensive 
income,  stockholders'  equity,  and  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2013.  These 
financial  statements  are  the  responsibility  of  the  Company's  management.  Our  responsibility  is  to  express  an  opinion  on 
these financial statements based on our audits. 

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

In  our  opinion,  such  consolidated  financial  statements  present  fairly,  in  all  material  respects,  the  financial  position  of 
Monolithic Power Systems, Inc. and subsidiaries as of December 31, 2013 and 2012, and the results of their operations and 
their  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2013,  in  conformity  with  accounting 
principles generally accepted in the United States of America. 

We  have  also  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States), the Company's internal control over financial reporting as of December 31, 2013, based on the criteria established 
in Internal Control – Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway 
Commission, and our report dated March 10, 2014 expressed an unqualified opinion on the Company's internal control over 
financial reporting. 

/s/ DELOITTE & TOUCHE LLP 

San Jose, California 
March 10, 2014 

38 

  
  
  
  
  
   
  
    
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED BALANCE SHEETS 
(in thousands, except par value) 

December 31, 
2013 

December 31,
2012

ASSETS 
Current assets: 

Cash and cash equivalents ............................................................................................  $
Short-term investments .................................................................................................   
Accounts receivable, net of allowances of $0 as of December 31, 2013 and $20 as of 

December 31, 2012 ...................................................................................................   
Inventories ....................................................................................................................   
Deferred income tax assets, net  ...................................................................................   
Prepaid expenses and other current assets ....................................................................   
Total current assets ....................................................................................................   
Property and equipment, net .............................................................................................   
Long-term investments .....................................................................................................   
Deferred income tax assets, net ........................................................................................   
Other long-term assets ......................................................................................................   
Total assets ................................................................................................................  $

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities: 

Accounts payable ..........................................................................................................  $
Accrued compensation and related benefits .................................................................   
Accrued liabilities .........................................................................................................   
Total current liabilities ..............................................................................................   
Income tax liabilities ........................................................................................................   
Other long-term liabilities ................................................................................................   
Total liabilities ..........................................................................................................   

Commitments and contingencies (Notes 8, 9 and 10) 
Stockholders' equity: 

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

outstanding: 38,291 and 35,673 as of December 31, 2013 and December 31, 2012, 
respectively ...............................................................................................................   
Retained earnings .........................................................................................................   
Accumulated other comprehensive income ..................................................................   
Total stockholders’ equity .........................................................................................   
Total liabilities and stockholders’ equity ..................................................................  $

101,213     $ 
125,126       

23,730       
39,737       
294       
1,986       
292,086       
64,837       
9,860       
481       
1,644       
368,908     $ 

10,694     $ 
10,419       
17,376       
38,489       
5,542       
1,478       
45,509       

75,104  
85,521  

19,383  
32,115  
1  
2,177  
214,301  
59,412  
11,755  
669  
1,025  
287,162  

9,859  
7,686  
5,915  
23,460  
5,408  
- 
28,868  

234,201       
82,938       
6,260       
323,399       
368,908     $ 

194,079  
60,040  
4,175  
258,294  
287,162  

See accompanying notes to consolidated financial statements. 

39 

   
  
 
    
 
     
       
 
      
        
 
  
      
        
 
     
       
 
      
        
 
      
        
 
      
        
 
  
   
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands, except per share amounts) 

Year Ended December 31,
2012 

2013

2011

Revenue ...............................................................................................  $
Cost of revenue ...................................................................................   
Gross profit .............................................................................     

Operating expenses: 

Research and development ..............................................................   
Selling, general and administrative ..................................................   
Litigation expense (benefit), net ......................................................   
Total operating expenses ........................................................     
Income from operations ......................................................................   
Interest and other income, net .............................................................   
Income before income taxes ................................................................   
Income tax provision ...........................................................................   
Net income ..........................................................................................  $

Basic net income per share ..................................................................  $
Diluted net income per share ...............................................................  $
Weighted average common shares outstanding: 

238,091     $
110,190      
127,901      

49,733      
54,624      
(371)    
103,986      
23,915      
92      
24,007      
1,109      
22,898     $

0.61     $
0.59     $

213,813     $
100,665       
113,148       

196,519  
94,925  
101,594  

48,796       
50,018       
(2,945 )     
95,869       
17,279       
611       
17,890       
2,134       
15,756     $

0.45     $
0.43     $

44,518  
40,280  
3,379  
88,177  
13,417  
309  
13,726  
425  
13,301  

0.39  
0.38  

34,050  
35,160  

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

37,387      
38,620      

34,871       
36,247       

See accompanying notes to consolidated financial statements. 

40 

  
  
 
 
  
 
   
    
 
      
        
        
 
  
      
        
        
 
      
        
        
 
  
   
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME 
(in thousands) 

Net income ..........................................................................................  $
Other comprehensive income, net of tax: 

Change in unrealized losses on auction-rate securities, net of $0 

Year Ended December 31,
2012 

2013

2011

22,898     $

15,756     $

13,301  

tax in 2013, 2012 and 2011 .........................................................   

130      

140       

270  

Change in unrealized gains on other available-for-sale securities, 

net of $0 tax in 2013, 2012 and 2011 ...........................................   
Foreign currency translation adjustments ........................................   
Total other comprehensive income, net of tax ....................................   
Comprehensive income ................................................................  $

(33)    
1,988      
2,085      
24,983     $

34       
408       
582       
16,338     $

(37)
1,381  
1,614  
14,915  

See accompanying notes to consolidated financial statements. 

41 

  
  
 
 
  
 
   
    
 
      
        
        
 
  
   
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 
(in thousands) 

Common Stock

Retained

  Shares

   Amount    Earnings   

Accumulated 
Other 
Comprehensive
Income 

Total 
Stockholders’
Equity

Balance as of January 1, 2011 ..............................  
Net income ...........................................................  
Change in unrealized losses on auction-rate 

35,063   $ 178,269   $
-   

-   

66,647   $
13,301    

1,979     $

246,895  
13,301  

securities ..........................................................  

-   

-   

Change in unrealized gains on other available-

for-sale securities .............................................  
Foreign currency translation adjustments .............  
Exercise of stock options and related tax benefit .  
Repurchase of common shares .............................  
Shares purchased through employee stock 

purchase plan ...................................................  
Stock-based compensation expense .....................  
Compensation expense for non-employee stock 

options ..............................................................  
Release of restricted stock ....................................  
Balance as of December 31, 2011 ........................  
Net income ...........................................................  
Change in unrealized losses on auction-rate 

-   
-   
685    
(2,485)  

-   
-   
4,630    
(38,472)  

150    
-   

1,773    
13,123    

-   

-   
-   
-   
-   

-   
-   

-   
413    
33,826    
-   

13    
-   
159,336    
-   

-   
-   
79,948    
15,756    

securities ..........................................................  

-   

-   

-   

Change in unrealized gains on other available-

for-sale securities .............................................  
Foreign currency translation adjustments .............  
Cash dividend .......................................................  
Exercise of stock options and related tax benefit .  
Shares purchased through employee stock 

purchase plan ...................................................  
Stock-based compensation expense .....................  
Compensation expense for non-employee stock 

options ..............................................................  
Release of restricted stock ....................................  
Balance as of December 31, 2012 ........................  
Net income ...........................................................  
Change in unrealized losses on auction-rate 

securities ..........................................................  

Change in unrealized gains on other available-

for-sale securities .............................................  
Foreign currency translation adjustments .............  
Exercise of stock options ......................................  
Repurchase of common shares .............................  
Shares purchased through employee stock 

purchase plan ...................................................  
Stock-based compensation expense .....................  
Release of restricted stock ....................................  
Balance as of December 31, 2013 ........................  

-   
-   
-   
1,152    

-   
-   
-   
14,232    

-   
-   
(35,664)  
-   

152    
-   

1,852    
18,642    

-   
-   

-   
543    
35,673    
-   

17    
-   
194,079    
-   

-   
-   
60,040    
22,898    

-   

-   

-   
-   
2,446    
(664)  

-   
-   
37,877    
(20,615)  

-   

-   
-   
-   
-   

111    
-   
725    

2,145    
20,715    
-   
38,291   $ 234,201   $

-   
-   
-   
82,938   $

See accompanying notes to consolidated financial statements. 

42 

270      

270  

(37)    
1,381      
-     
-     

-     
-     

-     
-     
3,593      
-     

140      

34      
408      
-     
-     

-     
-     

-     
-     
4,175      
-     

(37)
1,381  
4,630  
(38,472)

1,773  
13,123  

13  
- 
242,877  
15,756  

140  

34  
408  
(35,664)
14,232  

1,852  
18,642  

17  
- 
258,294  
22,898  

130      

130  

(33)    
1,988      
-     
-     

-     
-     
-     
6,260     $

(33)
1,988  
37,877  
(20,615)

2,145  
20,715  
- 
323,399  

  
  
 
  
  
  
  
    
  
 
  
    
 
      
  
   
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Cash flows from operating activities: 
Net income ........................................................................................    $
Adjustments to reconcile net income to net cash provided by 

operating activities: 
Depreciation and amortization .........................................................   
Loss on disposal of property and equipment ...................................   
Amortization and loss on investments .............................................   
Gain on auction-rate securities ........................................................   
Deferred income tax assets ..............................................................   
Excess tax benefit from stock option transactions ...........................   
Stock-based compensation ...............................................................   
Changes in operating assets and liabilities: 

Accounts receivable .....................................................................   
Inventories ....................................................................................   
Prepaid expenses and other current assets ....................................   
Accounts payable .........................................................................   
Accrued liabilities ........................................................................   
Accrued income taxes payable and long-term income tax 

liabilities .................................................................................   
Accrued compensation and related benefits .................................   
Net cash provided by operating activities .................................   

Cash flows from investing activities: 

Property and equipment purchases ..................................................   
Proceeds from sale of property and equipment ................................   
Premiums paid on deferred compensation plan ...............................   
Purchases of short-term investments ...............................................   
Proceeds from sale of short-term investments .................................   
Proceeds from sale of long-term investments ..................................   
Change in restricted assets ...............................................................   
Net cash provided by (used in) investing activities ..................   

Cash flows from financing activities: 

Property and equipment purchased on extended payment terms  
Proceeds from issuance of common shares .....................................   
Proceeds from employee stock purchase plan .................................   
Repurchases of common shares .......................................................   
Dividend payment ............................................................................   
Excess tax benefits from stock option transactions .........................   
Net cash provided by (used in) financing activities ..................   
Effect of change in exchange rates ......................................................   
Net increase (decrease) in cash and cash equivalents ..........................   
Cash and cash equivalents, beginning of period .................................   
Cash and cash equivalents, end of period ............................................  $

Year Ended December 31,
2012 

2013

2011

22,898     $

15,756     $

13,301  

12,160      
31      
443      
-     
(81)    
-     
20,701      

(4,347)    
(7,606)    
121      
1,440      
12,149      

86      
2,691      
60,686      

(15,764)    
88      
(617)    
(125,756)    
85,700      
2,025      
-     
(54,324)    

(557)    
37,877      
2,145      
(20,615)    
-     
-     
18,850      
897      
26,109      
75,104      
101,213     $

9,332       
81       
254       
(40 )     
(8 )     
(869 )     
18,652       

(4,286 )     
(12,004 )     
(456 )     
754       
(2,097 )     

1,476       
(1,633 )     
24,912       

(21,059 )     
13       
-       
(143,094 )     
135,183       
2,100       
20       
(26,837 )     

-       
13,390       
1,852       
-       
(35,664 )     
869       
(19,553 )     
211       
(21,267 )     
96,371       
75,104     $

8,732  
33  
376  
- 
(403)
(27)
13,126  

3,250  
5,699  
673  
(957)
(438)

(169)
489  
43,685  

(21,022)
- 
- 
(78,250)
129,719  
5,775  
- 
36,222  

- 
4,697  
1,773  
(38,472)
- 
27  
(31,975)
429  
48,361  
48,010  
96,371  

Supplemental disclosures for cash flow information: 

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

1,116     $

807     $

675  

Supplemental disclosures of non-cash activities: 

Liability accrued for property and equipment purchases .................  $

1,941     $

1,728     $

1,483  

See accompanying notes to consolidated financial statements. 
43 

  
  
 
 
  
 
   
    
 
  
      
        
        
 
     
       
       
 
      
        
        
 
      
        
        
 
  
      
        
        
 
     
       
       
 
  
      
        
        
 
     
       
       
 
   
  
   
      
        
  
      
        
        
 
      
        
        
 
  
MONOLITHIC POWER SYSTEMS, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

1. Summary of Significant Accounting Policies 

Business — Monolithic Power Systems, Inc. (“MPS” or the “Company”) was incorporated in the State of California on 
August  22,  1997.  On  November  17,  2004,  the  Company  was  reincorporated  in  the  State  of  Delaware.  MPS  designs, 
develops and markets proprietary, advanced analog and mixed-signal semiconductors.  

Basis of Presentation — The consolidated financial statements include the accounts of the Company and its wholly owned 
subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. 

Foreign  Currency  —  The  Company’s  foreign  subsidiaries  operate  primarily  using  their  respective  local  currencies,  and 
therefore, the local currency has been determined to be the functional currency for each foreign subsidiary. Accordingly, all 
assets and liabilities of the Company’s foreign subsidiaries are translated using exchange rates in effect at the end of the 
period. Revenue and costs are translated using average exchange rates for the period. The resulting translation adjustments 
are  presented  as  a  separate  component  of  accumulated  other  comprehensive  income  in  stockholders’  equity  in  the 
Consolidated  Balance  Sheets.  Foreign  currency  transaction  losses  are  reported  in  interest  and  other  income,  net,  in  the 
Consolidated  Statements  of  Operations  and  totaled  $0.6  million,  $0.1  million  and  $0.3  million  for  the  years  ended 
December 31, 2013, 2012 and 2011, respectively. 

Use of Estimates — The preparation of financial statements in conformity with accounting principles generally accepted in 
the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported 
amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and 
reported amounts of revenue and expenses during the reporting period. Significant estimates and assumptions used in these 
consolidated financial statements primarily include those related to revenue recognition, inventory valuation, valuation of 
stock-based awards, contingencies and tax valuation allowances. Actual results could differ from those estimates. 

Certain  Significant  Risks  and  Uncertainties  —  Financial  instruments  which  potentially  subject  the  Company  to 
concentrations  of  credit  risk  consist  primarily  of  cash  and  cash  equivalents,  short-term  and  long-term  investments  and 
accounts  receivable.  The  Company’s  cash  consists  of  checking  and  savings  accounts.  The  Company’s  cash  equivalents 
include short-term, highly liquid investments purchased with remaining maturities at the date of purchase of three months 
or less. The Company’s short-term investments consist primarily of government agencies and treasuries and the Company’s 
long-term investments consist of government-backed student loan auction-rate securities. The Company generally does not 
require  its  customers  to  provide  collateral  or  other  security  to  support  accounts  receivable.  To  manage  credit  risk, 
management  performs  ongoing  credit  evaluations  of  its  customers’  financial  condition.  The  Company  requires  cash  in 
advance for certain customers in addition to ongoing credit evaluations for those where credit has been extended. Accounts 
receivable allowances were not material in any periods presented. 

The Company participates in the dynamic high technology industry and believes that changes in any of the following areas 
could  have  a  material  adverse  effect  on  the  Company’s  future  financial  position,  results  of  operations  or  cash  flows: 
advances and trends in new technologies and industry standards; competitive pressures in the form of new products or price 
reductions  on  current  products;  changes  in  product  mix;  changes  in  the  overall  demand  for  products  offered  by  the 
Company;  changes  in  third-party  manufacturers;  changes  in  key  suppliers;  changes  in  certain  strategic  relationships  or 
customer relationships; litigation or claims against the Company based on intellectual property, patent, product, regulatory 
or other factors; fluctuations in foreign currency exchange rates; risk associated with changes in domestic and international 
economic  and/or  political  regulations;  availability  of  necessary  components  or  subassemblies;  availability  of  foundry 
capacity; and the Company’s ability to attract and retain employees necessary to support its growth. 

Cash and Cash Equivalents — The Company classifies all highly liquid investments with stated maturities of three months 
or less from date of purchase as cash equivalents. 

44 

   
  
  
  
  
   
  
  
  
  
 
 
Fair Value of Financial Instruments — ASC 820-10, Fair Value Measurements and Disclosures – Overall, defines fair 
value,  establishes  a  framework  for  measuring  fair  value  and  requires  that  assets  and  liabilities  carried  at  fair  value  be 
classified and disclosed in one of three categories, as follows: 

    Level 1: Quoted prices in active markets for identical assets; 
    Level 2: Significant other observable inputs; and 
    Level 3: Significant unobservable inputs. 

The  Company’s  financial  instruments  include  cash  and  cash  equivalents,  short-term  and  long-term  investments.  Cash 
equivalents are stated at cost, which approximates fair market value. The Company’s short-term and long-term investments 
are classified as available-for-sale securities and are stated at their fair market value. 

The Company uses ASC 320, Investments – Debt and Equity Securities, to determine whether an impairment is temporary 
or  other-than  temporary.  Unrealized  gains  or  losses  that  are  deemed  to  be  temporary  are  recorded  as  a  component  of 
accumulated  other  comprehensive  income  in  stockholder’s  equity  in  the  Consolidated  Balance  Sheets  and  changes  in 
unrealized gains or losses are recorded in the Consolidated Statements of Comprehensive Income. The Company records an 
impairment charge in interest and other income, net, in the Consolidated Statements of Operations when an available-for-
sale  investment  has  experienced  a  decline  in  value  that  is  deemed  to  be  other-than-temporary.  Other-than-temporary 
impairment exists when the Company either has the intent to sell the security, it will more likely than not be required to sell 
the security before anticipated recovery, or it does not expect to recover the entire amortized cost basis of the security.  

At December 31, 2013, the fair value of the Company’s holdings in auction rate securities was $9.9 million, all of which 
was  classified  as  long-term  available-for-sale  investments.  The  valuation  of  the  auction-rate  securities  is  subject  to 
fluctuations in the future, which will depend on many factors, including the quality of the underlying collateral, estimated 
time to liquidity including potential to be called or restructured, underlying final maturity, insurance guaranty and market 
conditions, among others. 

Inventories — Inventories consist of work-in-process and finished goods. Inventories are stated at the lower of standard 
cost (which approximates actual cost determined on a first-in first-out basis) or current market value. The Company writes 
down  excess  and  obsolete  inventory  based  on  its  age  and  forecasted  demand,  which  includes  estimates  taking  into 
consideration  the  Company’s  outlook  on  uncertain  events such  as  market  and  economic  conditions,  technology  changes, 
new product introductions and changes in strategic direction. Actual demand may differ from forecasted demand and such 
differences  may  have  a  material  effect  on  recorded  inventory  values.  Inventory  write-downs  are  not  reversed  until  the 
related inventories have been sold. 

Property  and  Equipment  —  Property  and  equipment  are  stated  at  cost.  Depreciation  is  computed  using  the  straight-line 
method over the estimated useful lives of the assets, generally three to forty years. Buildings and building improvements 
have a depreciation life of up to 40 years. Leasehold improvements are amortized over the shorter of the estimated useful 
life or the lease period.  Computer, software and equipment have a depreciation life of three to seven years. Furniture and 
fixtures have a depreciation life of three to five years.  

Long-Lived  Assets  —  The  Company  evaluates  long-lived  assets  for  impairment  whenever  events  or  changes  in 
circumstances  indicate  that  the  carrying  amount  of  an  asset  may  not  be  recoverable.  An  impairment  loss  would  be 
recognized  when  the  sum  of  the  undiscounted  future  net  cash  flows  expected  to  result  from  the  use  of  the  asset  and  its 
eventual disposition is less than its carrying amount. Such impairment loss would be measured as the difference between 
the carrying amount of the asset and its fair value based on the present value of estimated future cash flows. 

Other  Assets —  Other  assets  primarily  consist  of  intangible  assets for the  land use  rights  in  Chengdu,  China, purchased 
patents, long-term lease deposits and deferred compensation plan assets. We amortize the land use rights over 50 years and 
the purchased patents up to five years. 

Deferred Compensation Plan — The Company has a non-qualified, unfunded deferred compensation plan, which provides 
certain key employees, including our executive management, with the ability to defer the receipt of compensation in order 
to  accumulate  funds  for  retirement  on  a  tax  deferred  basis.  The  Company  does  not  make  contributions  to  the  plan  or 
guarantee  returns  on  the  investments.  The  Company  is  responsible  for  the  plan’s  administrative  expenses.  Participant 
deferrals  and  investment  gains  and  losses  remain  as  the  Company’s  liabilities  and  the  underlying  assets  are  subject  to 
claims of general creditors.  

45 

  
   
   
   
    
  
  
  
  
  
  
  
  
The  deferred  compensation  plan  assets  include  corporate-owned  life  insurance  policies,  which  are  recorded  at  the  cash 
surrender value in each reporting period and are included in other assets. Changes in the cash surrender value are recorded 
in interest and other income, net, in the Consolidated Statements of Operations. The liabilities of the plan are recorded at 
fair  value  in  each  reporting  period  and  are  included  in  long-term  liabilities.  Changes  in  fair  value  of  the  liabilities  are 
recorded as an operating expense (credit) in the Consolidated Statements of Operations. 

Warranty  Reserves  — The  Company  generally  provides  a  one  to  two-year  warranty  against  defects  in  materials  and 
workmanship and will either repair the goods or provide replacement products at no charge to the customer for defective 
products. Reserve requirements are recorded in the period of sale and are based on an assessment of the products sold with 
warranty  and historical warranty  costs  incurred.  Historically,  the  warranty  expenses were not  material  to  the  Company’s 
consolidated financial statements.  

Revenue Recognition — The Company recognizes revenue when the following four basic criteria are met: (1) persuasive 
evidence  of  an  arrangement  exists;  (2)  delivery  has  occurred  or  services  have  been  rendered;  (3)  the  fee  is  fixed  or 
determinable; and (4) collectability is reasonably assured. Determination of criteria (3) and (4) are based on management’s 
judgment  regarding  the  fixed  nature  of  the  fee  charged  for  products  delivered  and  the  collectability  of  those  fees.  The 
application of these criteria has resulted in the Company generally recognizing revenue upon shipment (when title passes) 
to customers, including distributors, original equipment manufacturers and electronic manufacturing service providers.  

The Company’s revenue consists primarily of sales of assembled and tested finished goods. The Company also sells die in 
wafer form to  its customers  and value-added resellers, and the Company receives royalty revenue from  third parties and 
value-added resellers. 

For the years ended December 31, 2013 and 2012, approximately 91% of the Company’s distributor sales, including sales 
to  the  Company’s  value-added  resellers,  were  made  through  distribution  arrangements  with  third  parties.  These 
arrangements  do  not  include  any  special  payment  terms  (the  Company’s  normal  payment  terms  are  30-45  days  for  its 
distributors), price protection or exchange rights. Returns are limited to the Company’s standard product warranty. Certain 
of the Company’s large distributors have contracts that include limited stock rotation rights that permit the return of a small 
percentage of the previous six months’ purchases. 

For  the  years  ended  December  31,  2013  and  2012,  approximately  9%  of  the  Company’s  distributor  sales  were  made 
through small distributors primarily based on purchase orders. These distributors typically have no stock rotation rights. 

The  Company  maintains  a  sales  reserve  for  stock  rotation rights, which  is based on historical  experience of  actual  stock 
rotation returns on a per distributor basis, where available, and information related to products in the distribution channel. 
This  reserve  is  recorded  at  the  time  of  sale.  Historically,  these  returns  were  not  material  to  the  Company’s  consolidated 
financial statements.  In the future, if the Company is not able to estimate its stock rotation returns accurately, the Company 
may have to recognize revenue when the distributors sell such inventory to end customers. 

The Company generally recognizes revenue upon shipment of products to the distributors for the following reasons: 

(1) 

(2) 

(3) 
(4) 
(5) 

(6) 

The price is fixed or determinable at the date of sale. The Company does not offer special payment terms, price
protection or price adjustments to distributors when the Company recognizes revenue upon shipment.  
The  distributors  are  obligated  to  pay  the  Company  and  this  obligation  is  not  contingent  on  the  resale  of  the
Company’s products. 
The distributors’ obligation is unchanged in the event of theft or physical destruction or damage to the products.
The distributors have stand-alone economic substance apart from the Company’s relationship. 
The  Company  does  not  have  any  obligations  for  future  performance  to  directly  bring  about  the  resale  of  its
products by the distributors. 
The  amount  of  future  returns  can  be reasonably  estimated.  The  Company  has  the  ability  and  the  information
necessary to track inventory sold to and held at its distributors. The Company maintains a history of returns and
has the ability to estimate the stock rotation returns on a quarterly basis. 

46 

  
   
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
If the Company enters into arrangements that have rights of return that are not estimable, the Company recognizes revenue 
under such arrangements only after the distributors have sold the products to end customers. Two of the Company’s U.S. 
distributors have distribution agreements where revenue is recognized upon sale by these distributors to their end customers 
because these distributors have certain rights of return which management believes are not estimable. The deferred revenue 
balance from these two distributors as of December 31, 2013 and 2012 was $1.7 million and $1.6 million, respectively. The 
deferred costs as of December 31, 2013 and 2012 were $0.2 million.  

Stock-Based Compensation — The Company accounts for stock-based compensation under the provisions of ASC 718-10-
30, Compensation – Stock Compensation – Overall – Initial Measurement. This standard requires the Company to measure 
the cost of employee services received in exchange for an award of equity instruments based on the grant-date fair value of 
the  award. The  Company  uses  the  Black-Scholes  model  to  estimate  the  fair  value  of  its  options  and  employee  stock 
purchase plan. The fair value of time-based and performance-based restricted stock units is based on the grant date share 
price. The fair value of market-based restricted stock units is estimated using a Monte Carlo simulation model. 

The Company recognizes compensation expense equal to the grant-date fair value for all share-based payment awards that 
are expected to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire awards, 
unless the awards are subject to performance or market conditions, in which case the Company recognizes compensation 
expense over the requisite service period of each separate vesting tranche. For the performance-based awards, the Company 
recognizes  compensation  expense  when  it  becomes  probable  that  the  performance  criteria  specified  in  the  plan  will  be 
achieved. For the market-based awards, compensation expense is not reversed if the market condition is not satisfied. The 
amount of stock-based compensation that the Company recognizes is also based on an expected forfeiture rate. If there is a 
difference  between  the  forfeiture  assumptions  used  in  determining  stock-based  compensation  costs  and  the  actual 
forfeitures which become known over time, the Company may change the forfeiture rate, which could have a significant 
impact on its stock-based compensation expense. 

Research and Development — Costs incurred in research and development are charged to operations as incurred. 

Litigation Expenses (Benefits) — The Company records litigation costs in the period in which they are incurred. Due to 
the  uncertainties  inherent  in  litigation  proceedings,  the  Company  generally  recognizes  the  proceeds  resulting  from 
settlement of litigation or favorable judgments when the cash is received and there is no further contingency related to the 
litigation. The proceeds are recorded as a reduction in litigation expense to the extent that litigation costs were previously 
incurred  in  the  related  case.  Proceeds  in  excess  of  cumulative  costs  incurred  for  a  case  is  recorded  to  interest  and  other 
income,  net, on  the  Consolidated  Statements  of  Operations.  Litigation  expense  (benefit),  net,  in  the  Consolidated 
Statements of Operations includes primarily patent litigation and other contract-related matters. 

Accounting  for  Income  Taxes  —  In  accordance  with  ASC  740-10,  the  Company  recognizes  federal,  state  and  foreign 
current  tax  liabilities  or  assets  based  on  its  estimate  of  taxes  payable  or  refundable  in  the  current  fiscal  year  by  tax 
jurisdiction.  The  Company  also  recognizes  federal,  state  and  foreign  deferred  tax  assets  or  liabilities  for  its  estimate  of 
future tax effects attributable to temporary differences and carryforwards. The Company records a valuation allowance to 
reduce any deferred tax assets by the amount of any tax benefits that, based on available evidence and judgment, are not 
expected to be realized. 

The Company’s calculation of current and deferred tax assets and liabilities is based on certain estimates and judgments 
and involves dealing with uncertainties in the application of complex tax laws. The Company’s estimates of current and 
deferred tax assets and liabilities may change based, in part, on added certainty or finality or uncertainty to an anticipated 
outcome, changes in accounting or tax laws in the U.S., or foreign jurisdictions where the Company operates, or changes in 
other facts or circumstances. In addition, the Company recognizes liabilities for potential U.S. and foreign income tax for 
uncertain  income  tax  positions  taken  on  its  tax  returns  if  it  has  less  than  a  50%  likelihood  of  being  sustained.  If  the 
Company determines that payment of these amounts is unnecessary or if the recorded tax liability is less than its current 
assessment,  the  Company  may  be  required  to  recognize  an  income  tax  benefit  or  additional  income  tax  expense  in  its 
financial  statements  in  the  period  such  determination  is  made.  The  Company  has  calculated  its  uncertain  tax  positions 
which  were  attributable  to  certain  estimates  and  judgments  primarily  related  to  transfer  pricing,  cost  sharing  and  its 
international tax structure exposure. 

47 

  
  
   
  
  
  
  
 
 
The Company incurred significant stock-based compensation expense, some of which are related to incentive stock options 
for  which  no  corresponding  tax  benefit  will  be  recognized  unless  a  disqualifying  disposition  occurs.  Disqualifying 
dispositions  result  in  a  reduction  of  income  tax  expense  in  the  period  when  the  disqualifying  disposition  occurs.  Tax 
benefits related to realized tax deductions in excess of previously expensed stock compensation are recorded as an addition 
to paid-in-capital. 

Contingencies —  The  Company  is  a  party  to  actions  and  proceedings  incident  to  its  business  in  the  ordinary  course  of 
business, including litigation regarding the Company’s intellectual property, challenges to the enforceability or validity of 
its  intellectual  property  and  claims  that  its  products  infringe  on  the  intellectual  property  rights  of  others.  The  pending 
proceedings  involve  complex  questions  of  fact  and  law  and  will  require  the  expenditure  of  significant  funds  and  the 
diversion of other resources to prosecute and defend. In addition, from time to time, the Company becomes aware that it is 
subject  to  other  contingent  liabilities. When  this  occurs,  the  Company  will  evaluate  the  appropriate  accounting  for  the 
potential  contingent  liabilities  using  ASC  450-20-25,  Contingencies  –  Loss  Contingencies  –  Recognition,  to  determine 
whether a contingent liability should be recorded. In making this determination, management may, depending on the nature 
of the matter, consult with internal and external legal counsel and technical experts. Based on the facts and circumstances 
in each matter, the Company uses its judgment to determine whether it is probable that a contingent loss has occurred and 
whether  the  amount  of  such  loss  can  be  estimated.  If  the  Company  determines  a  loss  is  probable  and  estimable,  the 
Company records a contingent loss in accordance with ASC 450-20-25-2. In determining the amount of a contingent loss, 
the  Company  takes  into  account  advice  received  from  experts  for  each  specific  matter  regarding  the  status  of  legal 
proceedings, settlement negotiations (which may be ongoing), prior case history and other factors. Should the judgments 
and estimates made by management need to be adjusted as additional information becomes available, the Company may 
need  to  record  additional  contingent  losses.  Alternatively,  if  the  judgments  and  estimates  made  by  management  are 
adjusted, for example, if a particular contingent loss does not occur, the contingent loss recorded would be reversed. 

Comprehensive Income — Comprehensive income represents the change in the Company’s net assets during the period 
from non-owner sources. Accumulated other comprehensive income presented in the Consolidated Balance Sheet primarily 
consists  of  unrealized  gains  and  losses  related  to  available-for-sale  investments  and  foreign  currency  translation 
adjustments. 

Recent Accounting Pronouncements 

In  June  2011,  the  Financial  Accounting  Standards  Board  (“FASB”)  issued  Accounting  Standards  Update  2011-05, 
Presentation of Comprehensive Income. The standard requires entities to have more detailed reporting of comprehensive 
income.  Specifically,  the  standard  allows  an  entity  to  present  components  of  net  income  and  components  of  other 
comprehensive  income  in  one  continuous  statement  of  comprehensive  income,  or  in  two  separate,  but  consecutive 
statements.  The  guidance  became  effective  in  the  first  quarter  of  2013  and  applied  retrospectively.  The  adoption  of  this 
guidance did not have a material impact on the Company’s consolidated financial position, results of operations, or cash 
flows.  

In  February  2013,  the  FASB  issued  ASU  No.  2013-02,  Reporting  of  Amounts  Reclassified  Out  of  Accumulated  Other 
Comprehensive  Income.  This  ASU  adds  new  disclosure  requirements  for  items  reclassified  out  of  accumulated  other 
comprehensive income. The ASU was effective for fiscal years, and interim periods within those years, beginning on or 
after December 15, 2012 and must be applied prospectively. The Company adopted this standard on January 1, 2013 and 
the adoption of this guidance did not have a material impact on its consolidated financial position, results of operations or 
cash flows. 

In  July  2013,  the  FASB  issued  ASU  No.  2013-11,  Presentation  of  an  Unrecognized  Tax  Benefit  When  a  Net  Operating 
Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The standard gives guidance on the financial 
statement presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax 
credit  carryforward  exists,  with  the  purpose  of  reducing  diversity  in  practice.  This  new  standard  requires  the  netting  of 
unrecognized tax benefits against a deferred tax asset for a loss or other carryforward that would apply in settlement of the 
uncertain tax positions. The guidance will become effective in the first quarter of 2014 and should be applied prospectively. 
Early adoption is permitted. The Company does not expect that the adoption of this guidance will have a material impact on 
its consolidated financial position, results of operations, or cash flows. 

48 

  
  
  
  
   
  
  
 
 
2. Cash, Cash Equivalents and Investments 

The  following  is  a  summary  of  the  Company’s  cash  and  cash  equivalents,  short-term  and  long-term  investments  (in 
thousands): 

  Estimated Fair Market Value as of  

December 31, 
2013 

December 31, 
2012

Cash, cash equivalents and investments: 

Cash ..................................................................................................................  $
Money market funds .........................................................................................   
U.S. treasuries and government agency bonds ..................................................   
Auction-rate securities backed by student-loan notes .......................................   
Total cash, cash equivalents and investments ..........................................................  $

62,625     $ 
35,588       
128,126       
9,860       
236,199     $ 

59,145  
15,959  
85,521  
11,755  
172,380  

Reported as: 

December 31, 
2013 

December 31, 
2012

Cash and cash equivalents .................................................................................  $
Short-term investments .....................................................................................   
Long-term investments .....................................................................................   
Total cash, cash equivalents and investments ..........................................................  $

101,213     $ 
125,126       
9,860       
236,199     $ 

75,104  
85,521  
11,755  
172,380  

For the years ended December 31, 2013 and 2012, the Company redeemed $2.0 million and $2.1 million, respectively, of 
auction-rate securities at par. 

The  contractual  maturities  of  the  Company’s  short-term  and  long-term  available-for-sale  investments  are  as  follows  (in 
thousands):  

Due in less than 1 year .............................................................................................  $
Due in 1 - 5 years .....................................................................................................   
Due in greater than 5 years .......................................................................................   
  $

95,509     $ 
29,617       
9,860       
134,986     $ 

52,880  
32,641  
11,755  
97,276  

The following tables summarize unrealized gains and losses related to our investments in marketable securities designated 
as available-for sale (in thousands): 

December 31, 
2013 

December 31, 
2012

As of December 31, 2013  

Adjusted 
Cost

Unrealized 
Gains

Unrealized 
Losses

Total Fair 
Value 

Fair Value 
of 
Investments 
in 
Unrealized 
Loss 
Position

Money market funds .............................................  $
U.S. treasuries and government agency bonds ......   
Auction-rate securities backed by student-loan 

35,588    $
128,123     

notes ..................................................................   
  $

10,220     
173,931    $

-    $
26      

-     
26     $

-    $
(23)     

35,588     $
128,126      

(360)     
(383)   $

9,860      
173,574     $

- 
42,880  

9,860  
52,740  

49 

  
  
  
  
 
    
 
      
        
 
  
 
    
 
  
  
  
  
 
    
 
  
   
  
  
 
 
  
 
   
   
    
   
 
  
      
        
        
        
        
 
  
  
 
 
As of December 31, 2012  

Adjusted 
Cost

Unrealized 
Gains 

Unrealized 
Losses

Total Fair 
Value 

Fair Value 
of 
Investments 
in 
Unrealized 
Loss 
Position  

Money market funds .............................................  $
U.S. treasuries and government agency bonds ......   
Auction-rate securities backed by student-loan 

15,959    $
85,483     

notes ..................................................................   
  $

12,245     
113,687    $

-    $
45      

-     
45     $

-    $
(7)     

15,959     $
85,521      

(490)     
(497)   $

11,755      
113,235     $

- 
14,121  

11,755  
25,876  

The following table details the fair value measurement of the financial assets (in thousands): 

Fair Value Measurement at December 31, 2013

Quoted 
Prices in 
Active 
Markets 
for 
Identical 
Assets

    Significant 
Other 
Observable 
Inputs 
    Level 1      Level 2 
35,588     $ 
-      
-      

Significant 
Unobservable
Inputs
     Level 3
-    $
128,126      
-     
35,588     $  128,126     $

- 
- 
9,860  
9,860  

Total

35,588    $
128,126     
9,860     
173,574    $

Fair Value Measurement at December 31, 2012

Quoted 
Prices in 
Active 
Markets 
for 
Identical 
Assets

    Significant 
Other 
Observable 
Inputs 
    Level 1      Level 2 
15,959     $ 
-      
-      
15,959     $ 

Significant 
Unobservable
Inputs
     Level 3
-    $
85,521      
-     
85,521     $

- 
- 
11,755  
11,755  

Total

15,959    $
85,521     
11,755     
113,235    $

Money market funds ....................................................................  $
U.S. treasuries and government agency bonds .............................   
Auction-rate securities backed by student-loan notes ..................   
  $

Money market funds ....................................................................  $
U.S. treasuries and government agency bonds .............................   
Auction-rate securities backed by student-loan notes ..................   
  $

The  Company's  level  2  assets  consist  of  U.S.  treasuries  and  government  agency  bonds.  These  securities  generally  have 
market  prices  available  from  multiple  sources,  which  are  used  as  inputs  into  a  distribution-curve  based  algorithm  to 
determine fair value. 

50 

 
  
 
 
  
 
   
   
    
   
  
      
        
        
        
        
 
  
  
  
  
 
 
  
   
  
   
    
 
  
 
 
  
  
  
 
 
  
   
  
   
    
 
  
 
 
  
  
  
 
 
The  Company’s  level  3  assets  consist  of  government-backed  student  loan  auction-rate  securities,  with  interest  rates  that 
reset  through  a  Dutch  auction  every  7  to  35  days  and  which  became  illiquid  in  2008.  The  following  table  provides  a 
reconciliation of the Company’s level 3 assets (in thousands): 

Beginning balance at January 1, 2012 ....................................................................................................  $ 
Sales and settlement at par .....................................................................................................................    
Realized gain included in interest and other income, net .......................................................................    
Change in unrealized loss included in other comprehensive income .....................................................    
Balance at December 31, 2012 ...............................................................................................................    
Sales and settlement at par .....................................................................................................................    
Change in unrealized loss included in other comprehensive income .....................................................    
Ending balance at December 31, 2013 ...................................................................................................  $ 

13,675  
(2,100)
40  
140  
11,755  
(2,025)
130  
9,860  

The Company’s investment portfolio as of December 31, 2013 included $9.9 million in government-backed student loan 
auction-rate  securities,  net  of  impairment  charges  of  $390,000,  of  which  $360,000  was  temporary  and  $30,000  was 
recorded  as  other-than-temporary.  This  compares  to  an investment  balance  as  of  December  31,  2012  of  $11.8  million  in 
government-backed  student  loan  auction-rate  securities,  net  of  impairment  charges  of  $520,000,  of  which  $490,000  was 
temporary and $30,000 was recorded as other-than-temporary. 

The  underlying  maturities  of  these  auction-rate  securities  are  up  to  34  years.  As  of  December  31,  2013  and  2012,  the 
portion of the impairment classified as temporary was based on the following analysis: 

1.  The decline in the fair value of these securities is not largely attributable to adverse conditions specifically related 

to these securities or to specific conditions in an industry or in a geographic area; 

2.  Management possesses both the intent and ability to hold these securities for a period of time sufficient to allow

for any anticipated recovery in fair value; 

3.  Management believes that it is more likely than not that the Company will not have to sell these securities before

recovery of its cost basis; 

4.  Except  for  the  credit  loss  of  $70,000  recognized  in  the  year  ended  December  31,  2009,  the  Company  does  not 
believe  that  there  is  any  additional  credit  loss  associated  with  these  securities  because  the  Company  expects  to
recover the entire amortized cost basis; 

5.  There have been no further downgrades on these securities since 2009;  
6.  All scheduled interest payments have been made pursuant to the reset terms and conditions; and 
7.  All redemptions of these securities, representing 76% of the original portfolio, have been at par. 

Unless a rights offering or other similar offer is made to redeem at par and accepted by the Company, the Company intends 
to hold the balance of these investments through successful auctions at par. 

Determining  the  fair  value  of  the  auction-rate  securities  requires  significant  management  judgment  regarding  projected 
future cash flows which will depend on many factors, including the quality of the underlying collateral, estimated time for 
liquidity  including  potential  to  be  called  or  restructured,  underlying  final  maturity,  insurance  guaranty  and  market 
conditions, among others. To determine the fair value of the auction-rate securities, the Company used a discounted cash 
flow model with the following assumptions: 

Time-to-liquidity (months) 
Expected return  
Discount rate  

At December 31, 2013
24 
2.5%   
3.3% -  8.1% 

At December 31, 2012
24 
1.8%   

2.5% - 

7.3% 

For the year ended December 31, 2012, the Company redeemed a security at face value for which an other-than-temporary 
impairment  of  $40,000  had  previously  been  recorded  and  therefore,  recognized  a  gain  of  $40,000  in  interest  and  other 
income, net, in the Consolidated Statement of Operations. 

Deferred Compensation Plan:  

In the second quarter of 2013, the Company adopted a deferred compensation plan, which provides certain key employees, 
including our executive management, with the ability to defer the receipt of compensation in order to accumulate funds for 
retirement on a tax-deferred basis. As of December 31, 2013, the plan assets totaled $607,000 and the plan liabilities totaled 

51 

  
   
  
  
   
  
  
  
  
  
  
   
  
  
  
  
  
  
  
  
  
  
   
  
$628,000.  For  the  year  ended  December  31,  2013,  the  Company  recorded  an  expense  of  $10,000  in  interest  and  other 
income,  net,  related  to  the  changes  in  the  cash  surrender  value  of  the  plan  assets  and  an  operating  expense  of  $11,000 
related to the changes in the fair value of the plan liabilities. 

3. Inventories 

Inventories consist of the following (in thousands): 

Work in process .........................................................................................................  $
Finished goods ...........................................................................................................   
Total inventories ........................................................................................................  $

26,605     $ 
13,132       
39,737     $ 

20,992  
11,123  
32,115  

As of December 31,

2013 

2012

4. Property and Equipment, Net  

Property and equipment consist of the following (in thousands): 

Equipment and software .............................................................................................  $
Buildings and improvements ......................................................................................   
Land ...........................................................................................................................   
Furniture and fixtures .................................................................................................   
Leasehold improvements ...........................................................................................   
Vehicles ......................................................................................................................   
Property and equipment, gross ...................................................................................   
Less: accumulated depreciation and amortization ......................................................   
Property and equipment, net ......................................................................................  $

As of December 31,

2013 

2012

83,075     $ 
29,342       
5,600       
2,681       
2,150       
976       
123,824       
(58,987)     
64,837     $ 

65,937  
28,319  
5,600  
2,518  
2,053  
1,002  
105,429  
(46,017)
59,412  

Depreciation  expense  for  the  years  ended December  31,  2013,  2012  and  2011  was  $12.1  million,  $9.3  million  and  $8.7 
million, respectively. 

5. Accrued Liabilities 

Accrued liabilities consist of the following (in thousands): 

Proceeds from litigation (see Note 10) .......................................................................  $
Deferred revenue and customer prepayments ............................................................   
Stock rotation reserve .................................................................................................   
Commissions ..............................................................................................................   
Sales rebate ................................................................................................................   
Warranty ....................................................................................................................   
Other ..........................................................................................................................   
Total accrued liabilities ..............................................................................................  $

9,489     $ 
2,523       
1,459       
931       
900       
451       
1,623       
17,376     $ 

- 
2,198  
961  
464  
575  
331  
1,386  
5,915  

As of December 31,

2013 

2012

6. Stockholder’s Equity 

The Company has two stock plans —the 2004 Equity Incentive Plan and the 2014 Equity Incentive Plan (collectively, the 
“Stock Plans”). 

52 

  
  
  
  
 
 
  
 
    
 
   
  
  
  
 
 
  
 
    
 
  
  
  
  
  
 
 
  
 
    
 
  
  
  
 
 
2004 Equity Incentive Plan (the “2004 Plan”) 

The Company’s Board of Directors adopted the 2004 Plan in March 2004, and the Company’s stockholders approved it in 
November 2004. Grants generally vest over two to ten years. The 2004 Plan provides for annual increases in the number of 
shares available for issuance beginning on January 1, 2005 equal to the least of 5% of the outstanding shares of common 
stock on the first day of the year, 2,400,000 shares, or a number of shares determined by the Board of Directors. For the 
year ended December 31, 2013, the Company added 1.8 million shares available for future issuance to the 2004 Plan. As of 
December 31, 2013, approximately 3.8 million shares were available for future issuance. 

The 2004 Plan will expire on November 12, 2014. Once the 2004 Plan expires, the Company will no longer be able to grant 
equity awards under the 2004 Plan, and any shares otherwise remaining available for future grants under the 2004 Plan will 
no longer be available for issuance. 

2014 Equity Incentive Plan (the “2014 Plan”) 

The Company’s Board of Directors adopted the 2014 Plan in April 2013, and the Company’s stockholders approved it in 
June 2013. The 2014 Plan will become effective on November 13, 2014, the day after the 2004 Plan expires. The 2014 Plan 
provides for the issuance of up to 5,500,000 shares and will expire on November 13, 2024.  

Stock-Based Compensation Expense 

The Company recognized stock-based compensation expense as follows (in thousands): 

Cost of revenue .......................................................................  $
Research and development ......................................................   
Selling, general and administrative .........................................   
Tax benefit ..............................................................................   
Total ........................................................................................  $

Special Cash Dividend  

2013

Year Ended December 31, 
2012 

2011

631     $
6,219      
13,851      
-     
20,701     $

510     $ 
6,922       
11,220       
(187 )     
18,465     $ 

312  
5,909  
6,905  
(114)
13,012  

On December 11, 2012, the Company’s Board of Directors declared a special cash dividend of $1.00 per common share, 
which was paid on December 28, 2012 to all shareholders of record as of the close of business on December 21, 2012, for a 
total of $35.7 million.  This was the first cash dividend in the Company’s history. Any future dividends will be subject to 
the approval of the Company’s Board of Directors. 

Equity Award Modifications 

In connection with the special cash dividend, the Company’s Board of Directors approved an equity award modification 
whereby the number of shares of each option outstanding as of December 28, 2012 was increased by a ratio of 1.0471 and 
the exercise price was reduced by the same ratio. Consequently, the Company granted an additional 171,484 shares. This 
modification was permissible pursuant to the Company’s 2004 Plan and resulted in an incremental compensation cost of 
$2.9 million, of which $2.8 million was recognized during the fourth quarter of 2012. The remaining $0.1 million is being 
recognized over the remaining vesting period of the awards. The Company used the Black-Scholes model to determine the 
fair value of the additional option awards with the following weighted-average assumptions: expected term of 1.9 years, 
expected volatility of 41.0%, risk-free interest rate of 0.3% and dividend yield of 0.0%. 

In  addition,  in  connection  with  the  special  cash  dividend,  the  Company’s  Board  of  Directors  approved  an  equity  award 
modification  whereby  for  each  unvested  RSU  as  of  December  28,  2012,  the  holder  would  receive  1.0471  shares  upon 
vesting of the original awards granted. Consequently, the Company granted an additional 73,805 shares. This modification 
was permissible pursuant to the Company’s 2004 Plan and resulted in an incremental compensation cost of $1.5 million, 
which  is  being  recognized  over  the  remaining  vesting  period  of  the  awards.  The  fair  value  of  the  additional  RSUs  was 
based on the grant date share price. 

53 

  
  
  
  
   
  
  
  
 
 
  
 
   
    
 
  
  
  
  
  
  
 
 
RSUs 

The Company’s RSUs include time-based RSUs, performance-based RSUs (“PSUs”) and market-based RSUs (“MSUs”). 
A summary of the RSUs is presented in the table below: 

Weighted-
Average 
Grant 
Date Fair 
Value Per 
Share

Time-
Based 
RSUs 

PSUs

Weighted-
Average 
Grant 
Date Fair 
Value Per 
Share

MSUs

Weighted-
Average 
Grant 
Date Fair 
Value Per 
Share 

Total

Weighted-
Average 
Grant 
Date Fair 
Value Per 
Share

Outstanding at January 1, 

2011 .............................   616,549    $ 
Awards granted .............   853,480      
Awards released ............   (310,976)    
(76,622)    
Awards forfeited ...........  

19.41    343,625   $
14.40   
-   
(102,125)  
17.78   
(24,375)  
18.39   

20.73   
-  
20.73   
20.73   

16.00    217,125    

20.73  

76,500    
15.69   
18.69    962,796    

-  
17.30   
16.61   

(624,403)  
(96,500)  
(4,333)  

15.69   
18.24   

18.19   
20.73   
19.07   

Outstanding at December 

31, 2011 .......................  1,082,431     
Awards modification 

(1) .............................  

(76,500)    
Awards granted (2)(3) ..   617,084      
Performance 

adjustment (4) ...........  

-     
Awards released ............   (447,096)    
(77,356)    
Awards forfeited ...........  

Outstanding at December 

31, 2012 .......................  1,098,563     
Awards granted (3) .......   298,908      
Performance 

adjustment (4) ...........  

-     
Awards released ............   (518,552)    
Awards forfeited ...........   (124,613)    

Outstanding at December 

16.96    531,185    
24.25    874,806    

18.49   
-   
24.43    1,800,000   

-   1,629,748   
23.57    2,973,714   

-  
17.57   
17.06  

(124,141)  
(206,409)  
(47,659)  

21.98   
18.90   
19.06   

-   
-   
-   

-    (124,141)  
-    (724,961)  
-    (172,272)  

-  $
-   
-   
-   

-   

-   
-   

-   
-   
-   

-    960,174   $
-    853,480    
-    (413,101)  
-    (100,997)  

19.88  
14.40  
18.51  
18.95  

-   1,299,556   

16.87  

-   
-   
-   1,579,880   

-    (624,403)  
-    (543,596)  
(81,689)  
-   

- 
18.42  

18.19  
17.91  
16,74  

17.46  
23.89  

21.98  
17.95  
17.61 

31, 2013 .......................   754,306      

19.41    1,027,782   

23.02    1,800,000   

23.57    3,582,088   

22.53  

(1)  See “2011 and 2012 CEO Awards” below. 
(2)  Includes a total of 73,805 shares granted as a result of the equity award modifications discussed above. 
(3)  The  number  of  PSUs  and  MSUs  granted  reflects  the  maximum  number  of  shares  that  can  be  earned  under  the

programs. 

(4)  The performance adjustment reflects the number of PSUs that will not ultimately be earned based on management’s 
probability  assessment  (the  sum  of  (3)  and  (4)  reflect  the  number  of  PSUs  that  will  ultimately be  earned based  on 
management’s probability assessment).  

The intrinsic value related to time-based RSUs and PSUs released for the years ended December 31, 2013, 2012 and 2011 
was  $18.6  million,  $10.5  million  and  $5.8  million,  respectively.  As  of  December  31,  2013,  the  total  intrinsic  value  of 
outstanding time-based RSUs, PSUs and MSUs was $124.2 million. As of December 31, 2013, unamortized compensation 
expense  related  to outstanding  time-based  RSUs,  PSUs  and  MSUs  was  approximately  $47.7  million  with  a  weighted-
average remaining recognition period of approximately seven years.  

2013 MSUs: 

In  December  2013,  the  Board  of  Directors  granted  360,000  shares  to  the  Company’s  executive  officers  and  certain  key 
employees. The MSUs represent the right to receive a maximum of 1.8 million shares that can be earned upon achievement 
of certain pre-determined MPS stock price hurdles from January 1, 2014 to December 31, 2018 (“2013 MSUs”). The 2013 
MSUs  that  meet  the  pre-determined  stock  price  hurdles  from  January  1,  2014  to  December  31,  2018  will  vest  quarterly 
from January 1, 2019 to December 31, 2023, subject to continued employment with the Company. 

54 

  
  
  
 
   
  
  
  
 
  
  
 
  
  
  
  
  
In the event of a change in control, as generally defined in the 2004 Plan, in which the effective price per share paid by the 
acquiror meets or exceeds the stock price hurdles associated with the 2013 MSUs, all stock price hurdles at or below that 
price per share will be deemed met. All shares associated with the stock price hurdles that have been met (or deemed met 
based upon the price per share to be paid by the acquiror) prior to the closing of such transaction will be immediately and 
fully vested as they are deemed to have satisfied the time-based vesting requirement as of the closing of such transaction. 

The  Company  determined  the  grant  date  fair  value  of  the  2013  MSUs  using  a  Monte  Carlo  simulation  model  with  the 
following assumptions: grant date stock price of $31.73; expected volatility of 38.69%, risk-free interest rate of 1.6% and 
dividend yield of 0.0%. Stock-based compensation expense for the 2013 MSUs is not reversed if the pre-determined stock 
price hurdles are not satisfied. 

2013 Time-Based RSUs and PSUs: 

In  February  2013,  the  Board  of  Directors  granted  294,000  shares  to  the  Company’s  executive  officers.  These  grants 
included 25% time-based RSUs which vest over two years on a quarterly basis, and 75% PSUs which represent a target 
number  of  RSUs  to  be  awarded  upon  achievement  of  certain  pre-determined  revenue  targets  in  2014  (“2013  Executive 
PSUs”). The maximum number of 2013 Executive PSUs that an executive officer can receive is 300% of the target shares 
granted.  Half  of  the  2013  Executive  PSUs  will  vest  in  February  2015  if  the  pre-determined  revenue  goals  are  met  and 
approved by the Compensation Committee and the employee is employed by the Company. The remaining shares will vest 
over the following two years on a quarterly basis.  

In  February  2013,  the  Board  of  Directors  granted  215,000  shares  to  its  non-executive  employees.  These  grants  included 
124,000 time-based RSUs which vest over four years on a quarterly or annual basis, and 91,000 PSUs which represent a 
target number of RSUs to be awarded upon achievement of certain pre-determined revenue targets for the Company as a 
whole, certain regions or product-line divisions in 2014 (“2013 Non-Executive PSUs”). The maximum number of shares an 
employee  can  receive  is  either  200%  or  300%  of  the  target  shares  granted,  depending  on  the  job  classification  of  the 
employee. Half of the 2013 Non-Executive PSUs will vest in the first quarter of 2015 if the pre-determined performance 
goals  are  met  and  approved  by  the  Compensation  Committee  and  the  employee  is  employed  by  the  Company.  The 
remaining shares will vest over the following two years on a quarterly or annual basis.  

Based on the Company’s 2014 revenue forecast as of December 31, 2013, the Company has determined that it is probable 
that it will be able to achieve or exceed the pre-determined revenue targets set for both the 2013 Executive PSUs and the 
2013 Non-Executive PSUs. The Company continues to evaluate the expected performance against the pre-determined goals 
and will adjust stock-based compensation expense based on this assessment accordingly. 

2012 Time-Based RSUs and PSUs: 

In  February  2012,  the  Board  of  Directors  granted  413,000  shares  to  the  Company’s  executive  officers.  These  grants 
included 50% time-based RSUs which vest over two years on a quarterly basis, and 50% PSUs which represent a target 
number  of  RSUs to  be  awarded  upon  achievement  of  certain  pre-determined  revenue  targets  in  2013  (“2012  Executive 
PSUs”).  The  maximum  number  of  2012  Executive  PSUs  that  an  executive  officer  can  receive  was  300%  of  the  target 
shares granted. Half of the 2012 Executive PSUs will vest in February 2014 if the pre-determined revenue goals are met 
and  approved  by  the  Compensation  Committee  and  the  executive  officer is  employed  by  the  Company.  The  remaining 
shares will  vest  over  the  following  two  years  on  a  quarterly  basis.  In  February  2014,  the  Compensation  Committee 
approved the revenue goals achieved for the 2012 Executive PSUs and an additional 139,000 shares were awarded to the 
executive officers in February 2014. 

In April 2012, the Board granted 345,000 shares to its non-executive employees. These grants included 220,000 shares of 
time-based RSUs which vest over four years on a quarterly or annual basis, and 125,000 shares of PSUs which represent a 
target number of shares to be awarded upon achievement of certain pre-determined revenue targets for the Company as a 
whole, certain regions or product-line divisions in 2013 (“2012 Non-Executive PSUs”). The maximum number of shares an 
employee can  receive  was  either  200%  or  300%  of  the  target  shares  granted,  depending  on  the  job  classification  of  the 
employee. Half of the 2012 Non-Executive PSUs will vest in the second quarter of 2014 if the pre-determined performance 
goals are  met  and  approved  by  the  Compensation  Committee  and  the  employee  is  employed  by  the  Company. The 
remaining shares will vest over the following two years on a quarterly or annual basis.  

55 

  
  
  
   
  
  
  
  
  
 
 
2011 and 2012 CEO Awards: 

In February 2011, the Company granted 153,000 time-based RSUs to its CEO. In February 2012, the Board of Directors 
approved the modification of half of the time-based RSUs to PSUs (“2012 CEO PSUs”). The time-based RSUs that were 
not modified vested over two years on a quarterly basis from February 2011 to February 2013. The 2012 CEO PSUs would 
vest  upon  achievement  of  the  pre-determined  performance  goals  based  on  the  Company’s  2012  revenue  and  the  CEO’s 
continued employment. The maximum number of 2012 CEO PSUs that could be released was 100% of the target shares 
granted. In February 2013, the Compensation Committee determined that the pre-determined performance goals were met 
and the 2012 CEO PSUs were released in February 2013.   

2010 PSUs: 

In  February  2010,  the  Board  granted  416,000  shares  of  PSUs  to  the  Company’s  executive  officers  (“2010  Executive 
PSUs”), which would vest over four years, with a graded acceleration feature that allowed all or a portion of these awards 
to  be  accelerated  if  certain  performance  conditions  were  satisfied.  The  number  of  shares  that  would  be  accelerated  was 
based on achieving certain performance targets as set forth in the Company’s annual operating plan, as determined by the 
Compensation Committee in its sole discretion.  In February 2013, the Compensation Committee determined that the pre-
determined  performance  goals  for  the  2010  Executive  PSUs  were  met  and  accelerated  the  vesting  of the  remaining 
unvested awards in February 2013.   

Stock Options   

A summary of the stock options activities is presented in the table below: 

Weighted 
Average 
Exercise 
Price

Stock 
Options

Weighted-
Average 
Remaining 
Contractual 
Term 
(Years) 

Aggregate
Intrinsic 
Value 

Outstanding at January 1, 2011 .....................................................    5,835,118     $

14.61      

4.30     $19,035,591 

Options granted (weighted-average fair value of $5.85 per 

share) .....................................................................................   
Options exercised ......................................................................   
Options forfeited and expired ....................................................   

152,500      
(685,417)    
(438,962)    
Outstanding at December 31, 2011 ...............................................    4,863,239      

Options granted (weighted-average fair value of $8.22 per 

share) (1) ...............................................................................   

178,484      
Options exercised ......................................................................    (1,151,884)    
Options forfeited and expired ....................................................   
(76,478)    
Outstanding at December 31, 2012 ...............................................    3,813,361      
Options exercised ......................................................................    (2,445,523)    
(11,392)    
Options forfeited and expired ....................................................   
Outstanding at December 31, 2013 ...............................................    1,356,446      
Options exercisable at December 31, 2013 and expected to vest ..    1,353,337      
Options exercisable at December 31, 2013 ...................................    1,274,757      

13.96  

6.85      
18.66      
15.31      

15.63  
11.62      
20.90      
15.62      
15.49      
15.27      
15.86      
15.86      
15.96      

(1) Includes 171,484 options granted as a result of the equity award modification discussed above. 

3.44       8,817,049  

2.56       25,379,573 

1.91       25,505,753 
1.91       25,437,135 
1.76       23,843,458 

56 

  
  
  
   
  
  
  
 
   
    
   
 
    
  
     
  
 
  
     
  
 
  
     
  
 
    
  
     
  
 
  
     
  
 
  
     
  
 
  
     
  
 
  
     
  
 
  
  
 
 
The  following  table  summarizes  certain  information  related  to  outstanding  and  exercisable  options  as  of  December  31, 
2013: 

Range of Exercises 
Prices 
$0.76 - $12.42 
$12.57 - $14.89 
$14.93 - $14.96 
$15.03 - $15.03 
$15.13 - $17.92 
$18.17 - $19.53 
$19.56 - $23.02 
$23.09 - $23.09 
$23.50 - $23.50 
$24.67 - $24.67 

Options Outstanding
Weighted-
Average 
Remaining 
Contractual 
Life (Years)

     Weighted-
Average 
Exercise Price

Shares 

Options Exercisable

      Weighted-
Average 
Exercise Price

Shares 

159,981        
193,422        
11,494        
485,881        
223,686        
137,282        
131,109        
12,564        
22        
1,005        
1,356,446        

2.14      $
2.20       
1.32       
1.82       
1.23       
2.69       
1.83       
2.93       
2.72       
1.46       

10.46       
14.36       
14.93       
15.03       
16.97       
19.29       
21.55       
23.09       
23.50       
24.67       

140,945      $ 
159,617        
10,882        
485,881        
205,322        
130,726        
127,793        
12,564        
22        
1,005        
1,274,757        

10.36   
14.50   
14.93   
15.03   
17.07   
19.31   
21.56   
23.09   
23.50   
24.67   

Total  intrinsic  value  of  options  exercised  was  $27.8  million,  $10.0  million  and  $5.8  million,  respectively,  for  the  years 
ended December 31, 2013, 2012 and 2011. The net cash proceeds from the exercise of stock options were $37.9 million, 
$13.4  million  and  $4.7  million,  respectively,  for  the  years  ended  December  31,  2013,  2012  and  2011.  At  December  31, 
2013,  unamortized  compensation  expense  related  to  unvested  options  was  approximately  $0.5  million.  The  weighted-
average period over which compensation expense related to these unvested options will be recognized is approximately one 
year. 

The grant date fair value of stock options was determined using the Black-Scholes model with the following assumptions 
(excluding the options modification discussed above):  

Expected term (years) ......................................................................................  
Expected volatility ...........................................................................................  
Risk-free interest rate .......................................................................................  
Dividend yield ..................................................................................................  

Year Ended December 31,
2011
2012

4.1  
53.4%     
0.6%     
-  

4.1  
52.9%
1.1%
-  

In  estimating  the  expected  term,  the  Company  considers  its  historical  stock  option  exercise  experience,  post-vesting 
cancellations and remaining contractual term of the options outstanding. In estimating the expected volatility, the Company 
uses its own historical data to determine the estimated expected volatility. The Company uses the U.S. Treasury yield for 
the risk-free interest rate and a dividend yield of zero, as the Company generally has not paid dividends. The cash dividend 
paid in December 2012 was a special dividend. The Company applies a forfeiture rate that is based on options that have 
been forfeited historically. 

2004 Employee Stock Purchase Plan 

Under  the  2004  Employee  Stock  Purchase  Plan  (the  “ESPP”),  eligible  employees  may  purchase  common  stock  through 
payroll deductions. Participants may not purchase more than 2,000 shares in a six-month offering period or stock having a 
value greater than $25,000 in any calendar year as measured at the beginning of the offering period in accordance with the 
Internal  Revenue  Code  and  applicable  Treasury  Regulations.  The  ESPP  provides  for  an  automatic  annual  increase 
beginning on January 1, 2005 by an amount equal to the least of 1,000,000 shares, 2% of the outstanding shares of common 
stock  on  the  first  day  of  the  year,  or  a  number  of  shares  as  determined  by  the  Board  of  Directors.  For  the  years  ended 
December 31, 2013, 2012 and 2011, 111,000 shares, 152,000 shares and 150,000 shares, respectively, were issued under 
the ESPP. As of December 31, 2013, approximately 4.8 million shares were available for future issuance. 

57 

  
  
  
  
     
 
 
 
  
     
    
  
       
       
       
       
       
       
       
       
       
       
  
  
        
       
       
   
  
  
  
  
 
 
  
 
  
  
 
    
    
  
   
  
  
 
 
The intrinsic value for stock purchased was $0.8 million, $1.0 million and $0.3 million for the years ended December 31, 
2013,  2012  and  2011,  respectively.  The  unamortized  expense  as  of  December  31,  2013  was  $66,000,  which  will  be 
recognized  over  two  months.  The  Black-Scholes  model  was  used  to  value  the  employee  stock  purchase  rights  with  the 
following assumptions: 

2013

Year Ended December 31, 
2012

2011

Expected term (years) .................................................  
Expected volatility ......................................................  
Risk-free interest rate ..................................................  
Dividend yield .............................................................  

0.5  
28.0%   
0.1%   
-  

0.5  
45.8%     
0.1%     
-  

0.5  
39.2%
0.1%
-  

Cash proceeds from employee stock purchases for the years ended December 31, 2013, 2012 and 2011 was $2.1 million, 
$1.9 million and $1.8 million, respectively. 

7. Net Income Per Share 

Basic  net  income  per  share  is  computed  by  dividing  net  income  by  the  weighted  average  number  of  common  shares 
outstanding  for  the  period.  Diluted  net  income  per  share  reflects  the  potential  dilution  that  would  occur  if  outstanding 
securities or other contracts to issue common stock were exercised or converted into common stock, and calculated using 
the treasury stock method.   The following table sets forth the computation of basic and diluted net income per share (in 
thousands, except per share amounts): 

Year Ended December 31,
2012 

2013

2011

Numerator: 

Net income .......................................................................................  $

22,898     $

15,756     $

13,301  

Denominator: 

Weighted average outstanding shares used to compute basic net 

income per share ..........................................................................   
Effect of dilutive securities ..............................................................   
Weighted average outstanding shares used to compute diluted net 

37,387      
1,233      

34,871       
1,376       

34,050  
1,110  

income per share ..........................................................................   

38,620      

36,247       

35,160  

Net income per share – basic ...............................................................  $
Net income per share – diluted ............................................................  $

0.61     $
0.59    $

0.45     $
0.43     $

0.39  
0.38  

For  the  years  ended  December  31,  2013,  2012  and  2011,  approximately  2,000,  1.1  million  and  4.9  million  weighted-
average  common  stock  equivalents,  respectively,  were  excluded  from  the  calculation  of  diluted  net  income  per  share 
because their inclusion would have been anti-dilutive. 

8. Income Taxes  

The components of income (loss) before income taxes are as follows (in thousands): 

2013

Year Ended December 31, 
2012 

2011

United States ...........................................................................  $
International ............................................................................   
Total income before income taxes ..........................................  $

(2,309)   $
26,316      
24,007     $

807     $ 
17,083       
17,890     $ 

(2,031)
15,757  
13,726  

Management’s  intent  is  to  indefinitely  reinvest  any  undistributed  earnings  from the  Company's foreign  subsidiaries. 
Accordingly, no provision for Federal and state income or foreign withholding taxes has been provided thereon, nor is it 
practical  to  determine  the  amount  of  this  liability.  Upon  distribution  of  those  earnings  in  the  form  of  dividends  or 
otherwise, the Company will be subject to the U.S. income taxes and potential foreign withholding taxes. As of December 
31, 2013, the unremitted earnings of foreign subsidiaries were $141.0 million. The Company has sufficient cash reserves in 

58 

  
  
 
 
  
 
 
 
  
  
 
  
    
  
    
  
  
  
  
  
 
 
  
 
   
    
 
      
        
        
 
  
      
        
        
 
      
        
        
 
  
      
        
        
 
  
    
  
  
  
 
 
  
 
   
    
 
  
the  U.S.  and  intends  to  use  the  undistributed  foreign  earnings  to  fund  foreign  operations  and  research  and  development 
needs, planned capital outlay and expansion. 

The components of the income tax provision are as follows (in thousands): 

2013

Year Ended December 31, 
2012 

2011

Current: 

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

Deferred: 

Foreign .................................................................................   
Total income tax provision ......................................................  $

77     $
67      
1,053      

(88)    
1,109     $

840     $ 
3       
1,302       

(11 )     
2,134     $ 

The effective tax rate differs from the applicable U.S. statutory federal income tax rate as follows: 

2013

Year Ended December 31, 
2012 

2011

U.S. statutory federal tax rate .................................................   
State, net of federal benefit ....................................................   
Research and development credits .........................................   
Stock-based compensation .....................................................   
Foreign income at lower rates ................................................   
Changes in valuation allowance .............................................   
Litigation reserves and other ..................................................   
Effective tax rate ....................................................................   

34.0 %    
0.3       
-      
(13.7)     
(33.8)     
16.8       
1.0       
4.6 %    

34.0 %     
-       
(3.6)      
0.1        
(28.4)      
7.0        
2.8        
11.9 %     

The components of deferred tax assets consist of the following (in thousands): 

447  
(593)
992  

(421)
425  

34.0 %
-  
(0.5) 
5.6   
(31.8) 
(6.1) 
1.9   
3.1 %

Deferred tax assets: 

Research tax credits ..........................................................................................  $
Other expenses not currently deductible ...........................................................   
Stock-based compensation ................................................................................   
Litigation settlement .........................................................................................   
Net operating losses ..........................................................................................   
Depreciation and amortization ..........................................................................   
Total deferred tax assets ...........................................................................................   
Valuation allowance .................................................................................................   
Net deferred tax assets .............................................................................................  $

As of December 31,

2013 

2012

8,303     $ 
3,204       
2,599       
2,490       
627       
291       
17,514       
(16,739 )     
775     $ 

4,930  
2,133  
5,487  
- 
291  
317  
13,158  
(12,488)
670  

As  a  result  of  the  cost  sharing  arrangements with  the  Company’s  international  subsidiaries  (cost  share  arrangements), 
relatively small changes in costs that are not subject to sharing under the cost share arrangements can significantly impact 
the  overall  profitability  of  the  U.S.  entity.  Because  of  the  U.S.  entity’s  inconsistent  earnings  history  and  uncertainty  of 
future earnings, the Company has determined that it is more likely than not that the U.S. deferred tax benefits would not be 
realized. The Company will continue to evaluate if its facts and circumstances warrant a reversal of the valuation allowance 
against the U.S. deferred tax benefits during 2014.  

As  of  December  31,  2013  and 2012,  the  Company  had  a  valuation  allowance  of  $16.7  million  and  $12.5  million, 
respectively, attributable to management’s determination that it is more likely than not that most of the deferred tax assets 
in the U.S. will not be realized. Should it be determined that additional amounts of the net deferred tax asset will not be 
realized in the future, an adjustment to increase the deferred tax asset valuation allowance will be charged to income in the 
period such determination is made. Likewise, in the event the Company were to determine that it is more likely than not 
that it would be able to realize its deferred tax assets in the future in excess of its net recorded amount, an adjustment to the 
valuation allowance for the deferred tax asset would increase income in the period such determination was made. 

59 

  
  
  
 
 
  
 
   
    
 
      
        
        
 
      
        
        
 
  
  
  
 
 
  
 
 
 
     
 
  
  
  
 
 
  
 
    
 
      
        
 
  
   
As  of  December  31,  2013,  the  federal  and  state  net  operating  loss  carryforwards  for  income  tax  purposes  were 
approximately  $15.6  million  and  $30.2  million,  respectively.  The  federal  net  operating  loss  carryforwards  will  begin  to 
expire in 2027 and the state net operating loss carryforwards will expire beginning in 2018. $14.6 million of the federal net 
operating  loss  carry  forwards  and  $25.1  million  of  the  state  net operating  loss  carryforwards  are  related  to  excess  tax 
benefits as a result of stock option exercises and therefore will be recorded in additional paid-in-capital in the period that 
they  become  realized.  The  Company  has  elected  to  follow  the  “with  and  without”  approach  to  account  for  excess  tax 
benefits from stock options exercises. In addition, the Company only considers the direct effects of stock option exercises 
when calculating the amount of windfalls or shortfalls. 

As  of  December  31,  2013,  the  Company  had  research  tax  credit  carryforwards  of  $14.4  million  for  federal  income  tax 
purposes, which will begin to expire in 2022, and $12.4 million for state income tax purposes, which can be carried forward 
indefinitely. $3.6 million of the federal research tax credit and $1.4 million of the state research tax credit carryovers are 
related  to  excess  tax  benefits  as  a  result  of  stock  option  exercises  and  therefore  will  be  recorded  in  additional-paid-in-
capital in the period that they become realized. 

On  January  2,  2013,  the  President  signed  into  law  The  American  Taxpayer  Relief  Act  of  2012  (the  "2012  Act").  Under 
prior law, a taxpayer was entitled to a research tax credit for qualifying amounts paid or incurred on or before December 
31,  2011.  The  2012  Act  extends  the  research  credit  for  two  years  to  December  31,  2013.  The  extension  of  the  research 
credit  is  retroactive  and  includes  amounts  paid  or  incurred  after  December  31,  2011.  As  a  result  of  the  retroactive 
extension,  the  Company  had  an  increase  to  its  federal  R&D  credits  carryforwards  of  approximately  $1.7  million  for 
qualifying amounts incurred in 2012. However, due to the Company’s current valuation allowance position, this credit did 
not result in a tax benefit.  

In the event of a change in ownership, as defined under federal and state tax laws, the Company's net operating loss and tax 
credit carryforwards could be subject to annual limitations.  The annual limitations could result in the expiration of the net 
operating loss and tax credit carryforwards prior to utilization. 

At December 31, 2013, the Company had $14.9 million of unrecognized tax benefits, $5.0 million of which would affect its 
effective tax rate if recognized after considering the valuation allowance. At December 31, 2012, the Company had $13.1 
million of unrecognized tax benefits, $4.9 million of which would affect its effective tax rate if recognized after considering 
the valuation allowance.  

A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands): 

Balance as at January 1, 2011 ........................................................................................................................  $
Gross increase for tax position of prior year ..............................................................................................      
Gross increase for tax position of current year ..........................................................................................      
Balance as at December 31, 2011 ..................................................................................................................    
Gross increase for tax position of prior year ..............................................................................................      
Gross increase for tax position of current year ..........................................................................................      
Balance as of December 31, 2012 ..................................................................................................................    
Gross increase for tax position of prior year ..............................................................................................      
Gross increase for tax position of current year ..........................................................................................      
Reduction for prior year tax position .........................................................................................................      
Balance as of December 31, 2013 ..................................................................................................................  $

9,106  
1,710  
1,388  
12,204  
188  
689  
13,081  
646  
1,528  
(333)
14,922  

The Company recognizes interest and penalties, if any, related to uncertain tax positions in its income tax provision. As of 
December  31,  2013  and  2012,  the  Company  had  approximately  $0.8  million  of  accrued  interest  related  to  uncertain  tax 
positions, which were recorded in long-term income tax liabilities in the Consolidated Balance Sheets. 

Uncertain tax positions relate to the allocation of income and deductions among the Company’s global entities and to the 
determination  of  the  research  and  development  tax  credit.  The  Company  believes  that  it  is  reasonably  possible  that 
approximately $1.2 million of its unrecognized tax benefits may be released in 2014 as a result of a lapse of the statute of 
limitation. In addition, it is reasonably possible that over the next twelve-month period the Company may experience other 
increases or decreases in its unrecognized tax benefits. However, it is not possible to determine either the magnitude or the 
range of other increases or decreases at this time. 

60 

  
  
  
  
  
  
  
  
  
  
On September 13, 2013, the U.S. Treasury Department and the IRS issued final regulations that address costs incurred in 
acquiring,  producing,  or  improving  tangible  property  (the  "tangible  property  regulations").  The  tangible  property 
regulations are generally effective for tax years beginning on or after January 1, 2014, and may be adopted in earlier years. 
Given  its  full  valuation  allowance,  the  Company  does  not  anticipate  the  impact  of  these  changes  to  be  material  to  its 
consolidated financial position, results of operations or cash flows. 

Income Tax Audits 

The Company is subject to examination of its income tax returns by the IRS and other tax authorities. The Company’s U.S. 
Federal income tax returns for the years ended December 31, 2005 through December 31, 2007 are under examination by 
the IRS. In April 2011, the Company received from the IRS a Notice of Proposed Adjustment ("NOPA") relating to a cost-
sharing agreement entered into by the Company and its international subsidiaries on January 1, 2004. In the NOPA, the IRS 
objected to the Company’s allocation of certain litigation expenses between the Company and its international subsidiaries 
and the amount of "buy-in payments" made by the international subsidiaries to the Company in connection with the cost-
sharing  agreement,  and  proposed  to  increase  the  Company’s  U.S.  taxable  income  according  to  a  few  alternative 
methodologies. In February 2012, the Company received a revised NOPA from the IRS (“Revised NOPA”). In this Revised 
NOPA, the IRS raised the same issues as in the NOPA issued in April 2011 but under a different methodology. Under the 
Revised NOPA, the largest potential federal income tax adjustment, if the IRS were to prevail on all matters in dispute, is 
$10.5 million, plus interest and penalties, if any. The Company responded to the IRS Revised NOPA in May 2012. As of 
June 2013, the IRS has responded and continues to disagree with the Company’s rebuttal. The Company took the issue to 
the IRS Office of Appeals and has an appointed date in March 2014. Meanwhile, the Company agreed to grant the IRS an 
extension of the statute of limitations for taxable years 2005 through 2007 to December 31, 2014.  

The IRS also audited the research and development credits carried forward into year 2005 and the credits generated in the 
years 2005 through 2007. The Company received a NOPA from the IRS in February 2011, proposing to reduce the research 
and development credits generated in year 2005 through 2007 and the carryforwards, which would then reduce the value of 
such credits carried forward to subsequent tax years. 

The Company reviewed and responded to the above proposed adjustments. The Company regularly assesses the likelihood 
of an adverse outcome resulting from such examinations to determine the adequacy of its provision for income taxes. As of 
December 31, 2013, based on the technical merits of its tax return filing positions, the Company believes that it is more-
likely-than-not  that  the  benefit  of  such  positions  will  be  sustained  upon  the  resolution  of its  audits,  resulting  in  no 
significant impact on the Company’s consolidated financial position, results of operations and cash flows. 

9. Commitments and Contingencies 

Lease Obligations 

As of December 31, 2013, future minimum lease payments under the non-cancelable operating leases were as follows (in 
thousands): 

2014 ................................................................................................................................................................  $
2015 ................................................................................................................................................................    
2016 ................................................................................................................................................................    
2017 and thereafter .........................................................................................................................................    
Total ...............................................................................................................................................................  $

739  
600  
567  
113  
2,019  

Until  May  2012,  the  Company  leased  its  headquarters  and  sales  offices  in  San  Jose,  California.  The landlord  of  the  San 
Jose facility exercised their right to terminate the lease, effective April 18, 2012. In May 2012, the Company moved to an 
owned facility also located in San Jose, California. 

In September 2004, the Company entered into a lease arrangement for its manufacturing facility located in Chengdu, China. 
The Company now has the option to acquire the facility for approximately $1.8 million which consists of total construction 
costs minus total rent paid by the Company during the lease term. This option became exercisable in March 2011 and does 
not expire. The Company will likely exercise its purchase option and enter into a purchase agreement for this facility in the 
future. 

61 

  
  
  
  
  
  
  
 
 
  
  
The  Company  also  leases  sales  and  research  and  development  offices  in  the  United  States,  Japan,  China,  Taiwan  and 
Korea. Certain of the Company’s facility leases provide for periodic rent increases.  

Rent  expense  for  the  years  ended  December  31,  2013,  2012  and  2011  was  $1.2  million,  $1.6  million  and  $2.1  million, 
respectively. 

Warranty and Indemnification Provisions 

The Company generally provides a standard one to two-year warranty against defects in materials and workmanship and 
will  either  repair  the  goods  or  provide  replacements  at  no  charge  to  the  customer  for  defective  units.  In  such  cases,  the 
Company  accrues  for  the  related  costs  at  the  time  the  decision  to  permit  the  return  is  made.  Reserve  requirements  are 
recorded in the period of sale and are based on an assessment of the products sold with warranty and historical warranty 
costs incurred. 

The changes in warranty reserves are as follows (in thousands): 

Balance at beginning of period ...................................  $
Warranty provision for product sales ..........................   
Settlements made ........................................................   
Unused warranty provision .........................................   
Balance at end of period ..............................................  $

2013

Year Ended December 31, 
2012

2011

331    $
476     
(117)    
(239)    
451    $

561     $ 
917       
(675)     
(472)     
331     $ 

764  
870  
(626)
(447)
561  

The  Company  provides  indemnification  agreements  to  certain  direct  or  indirect  customers.  The  Company  agrees  to 
reimburse these parties for any damages, costs and expenses incurred by them as a result of legal actions taken against them 
by  third  parties  for  infringing  upon  their  intellectual  property  rights  as  a  result  of  using  the  Company’s  products  and 
technologies.  These  indemnification  provisions  are  varied  in  their  scope  and  are  subject  to  certain  terms,  conditions, 
limitations and exclusions. There were no indemnification liabilities incurred in 2013, 2012 and 2011. The Company also 
provides for indemnification of its directors and officers. 

10. Litigation 

The  Company  and  certain  of  its  subsidiaries  are  parties  to  actions  and  proceedings  in  the  ordinary  course  of  business, 
including litigation regarding its shareholders and its intellectual property, challenges to the enforceability or validity of its 
intellectual property and claims  that the Company’s products infringe on the intellectual property rights of others. These 
proceedings often involve complex questions of fact and law and may require the expenditure of significant funds and the 
diversion of other resources to prosecute and defend. The Company defends itself vigorously against any such claims. 

O2 Micro  

In May 2012, the United States District Court for the Northern District of California (the “District Court”) issued an order 
finding O2 Micro International, Ltd. (“O2 Micro”) liable for approximately $9.1 million in attorneys’ fees and non-taxable 
costs, plus interest, in connection with the patent litigation that the Company won in 2010.  This award was in addition to 
the approximately $0.3 million in taxable costs that the District Court had earlier ordered O2 Micro to pay to the Company 
in  connection  with  the  same  lawsuit.   In  October  2012,  O2  Micro  appealed  the  District  Court’s  judgment  to  the  United 
States  Court  of  Appeals  for  the  Federal  Circuit  (the  “Federal  Circuit”). In August 2013,  the  Federal Circuit  affirmed O2 
Micro’s liability for the full amount of the award.  In September 2013, O2 Micro filed a petition for rehearing of that ruling, 
but the Federal Circuit denied O2 Micro’s petition for rehearing on October 16, 2013.   

In November 2013, the Company received a cash payment of $9.5 million from O2 Micro. In January 2014, O2 Micro filed 
an appeal with the United States Supreme Court. If the Supreme Court agrees to review the case and O2 Micro is successful 
in obtaining a favorable ruling against the Company, MPS may be liable to return a portion or all of the $9.5 million to O2 
Micro. Accordingly, the Company recorded the $9.5 million as a current liability as of December 31, 2013. 

62 

  
  
  
  
  
  
 
 
  
 
   
    
 
  
  
  
  
  
  
  
 
 
Silergy 

In  December  2011,  the  Company  entered  into  a  settlement  and  license  agreement  with  Silergy  Corp.  and  Silergy 
Technology for infringement of the Company’s patent whereby the Company would receive a total of $2.0 million.  The 
first $1.2 million was paid in equal installments of $300,000 in each quarter of 2012 and the remainder was paid in two 
equal installments in the first two quarters of 2013. No further amount was due to the Company as of December 31, 2013. 
All amounts were recorded as credits to litigation expense (benefit), net, in the Consolidated Statements of Operations in 
the periods the proceeds were received. 

Linear 

In August 2012, the United States Court of Appeals for the Federal Circuit issued an order affirming the judgment issued 
by the United States District Court for the District of Delaware finding Linear Technology Corporation (“Linear”) liable for 
approximately  $2.3  million  in  attorneys’  fees  and  non-taxable  costs,  plus  interest,  in  connection  with  the  litigation 
regarding a contract dispute that the Company won in 2011. During the fourth quarter of 2012, the Company received a 
payment from  Linear of $2.3  million plus $0.2 million reimbursement of additional attorney fees in connection with the 
cost  of  defending  the  appeal,  which  was  recorded  as  a  credit  to  litigation  expense  (benefit),  net,  in  the  Consolidated 
Statements of Operations.  

11. Employee Benefits Plan 

The Company sponsors a 401(k) savings and profit-sharing plan for all employees in the United States who meet certain 
eligibility  requirements.  Participants  may  contribute  up  to  the  amount  allowable  as  a  deduction  for  federal  income  tax 
purposes. The Company is not required to contribute and did not contribute to the plan for 2013, 2012 and 2011. 

12. Major Customers 

The following table summarizes those customers with sales greater than 10% of the Company's total revenue or accounts 
receivable balances greater than 10% of the Company's total accounts receivable: 

Revenue
Year Ended December 31,
2012

2011

2013 

Accounts Receivable, Net
As of December 31,

2013 

2012

32%    
*    
10%    

32%  
*  
*  

27%   
*   
*   

32%   
*   
17%   

34%
11%
*

Customers 
A 
B 
C 

* Represents less than 10%. 

13. Segment Information  

As  defined  by  the  requirements  of  ASC  280-10-55,  Segment  Reporting  –  Overall  –  Implementation  Guidance  and 
Illustrations, the Company operates in one reportable segment that includes the design, development, marketing and sale of 
high-performance,  mixed-signal  analog  semiconductors  for  the  communications,  storage  and  computing,  consumer  and 
industrial markets. The Company’s chief operating decision maker is its chief executive officer. The Company derives  a 
majority  of  its  revenue  from  sales  to  customers  located  outside  North  America,  with  geographic  revenue  based  on  the 
customers’ ship-to locations. 

63 

  
  
  
  
  
  
  
  
   
   
   
   
   
   
   
   
  
   
   
   
   
   
  
    
  
  
 
 
The following is a summary of revenue by geographic regions (in thousands): 

2013

Year Ended December 31,  
2012 

2011

Country and Region 

China ...................................................................................  $
Taiwan .................................................................................   
Southeast Asia .....................................................................   
Europe .................................................................................   
Korea ...................................................................................   
United States ........................................................................   
Japan ....................................................................................   
Other ....................................................................................   
Total ....................................................................................  $

141,400     $
34,248      
21,760      
15,351      
9,992      
7,525      
7,495      
320      
238,091     $

124,278     $ 
27,477       
21,641       
16,201       
9,434       
5,711       
8,516       
555       
213,813     $ 

The following is a summary of revenue by product family (in thousands): 

Product Family 
DC to DC products ........................................................  $
Lighting control products ..............................................   
Total ..............................................................................  $

2013

Year Ended December 31,  
2012

211,337      $
26,754       
238,091      $

188,736      $ 
25,077        
213,813      $ 

The following is a summary of long-lived assets by geographic regions (in thousands): 

113,469  
23,634  
14,789  
14,416  
14,183  
4,422  
10,681  
925  
196,519  

2011* 
170,032   
26,487   
196,519   

China ....................................................................................................................  $
United States ........................................................................................................   
Other ....................................................................................................................   
Total .....................................................................................................................  $

14. Stock Repurchase Program 

As of December 31,

2013 

2012

41,557     $ 
24,719       
205       
66,481     $ 

37,071  
23,163  
202  
60,436  

In July 2013, the Board of Directors approved a stock repurchase program that authorizes the Company to repurchase up to 
$100 million in the aggregate of its common stock through June 30, 2015. All shares are retired upon repurchase. From the 
inception  of  the  program  through  December  31,  2013,  the  Company  repurchased  a  total  of  663,802  shares  for  $20.6 
million,  at  an  average  price  of  $31.06  per  share.  As  of  December  31,  2013,  $79.4  million  remained  available  for  future 
repurchases under the program. 

64 

  
  
 
 
 
   
    
 
   
  
  
 
 
 
 
 
       
  
  
  
 
 
  
 
    
 
  
  
  
 
 
15. Accumulated Other Comprehensive Income 

The following table summarizes the changes in accumulated other comprehensive income (in thousands): 

Unrealized 
Losses on 
Auction-Rate 
Securities

Unrealized 
Gains on 
Other 
Available-for-
Sale 
Securities

Foreign 
Currency 
Translation 
Adjustments      

Total

Balance as of January 1, 2012 ....................................  $

(630)    $

3      $

4,220      $

3,593   

Other comprehensive income before 

reclassifications ..................................................   

140       

Amounts reclassified from accumulated other 

comprehensive income .......................................   
Net current period other comprehensive income ....   
Balance as of December 31, 2012 ..............................   

Other comprehensive income (loss) before 

-      
140       
(490)     

20       

14       
34       
37       

408       

568   

-      
408       
4,628       

14   
582   
4,175   

reclassifications ..................................................   

130       

(29)    

1,988       

2,089   

Amounts reclassified from accumulated other 

comprehensive income .......................................   

-      

(4)    

-      

(4)

Net current period other comprehensive income 

(loss) ...................................................................   
Balance as of December 31, 2013 ..............................  $

130       
(360)    $

(33)    
4      $

1,988       
6,616      $

2,085   
6,260   

The amounts reclassified from accumulated other comprehensive income were recorded in interest and other income, net, 
in the Consolidated Statements of Operations. 

16. Quarterly Financial Data (Unaudited) 

Three Months Ended 

March 31, 
2013

June 30, 
2013

September 30, 
2013 

December 31,
2013

Revenue .................................................................  $
Cost of revenue .....................................................   
Gross profit ....................................................   

Operating expenses: 

Research and development ................................   
Selling, general and administrative ....................   
Litigation expense (benefit), net ........................   
Total operating expenses ................................   
Income from operations ........................................   
Interest and other income (expense), net ...............   
Income before income taxes ..................................   
Income tax provision (benefit) ..............................   
Net income ............................................................  $

Basic net income per share ....................................  $
Diluted net income per share .................................  $
Weighted-average common shares outstanding: 

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

(in thousands, except per share amounts) 
65,347     $ 
30,053       
35,294       

57,714     $
26,786      
30,928      

51,470     $
24,085      
27,385      

12,123      
13,258      
(301)    
25,080      
2,305      
(10)    
2,295      
(204)    
2,499     $

0.07     $
0.07     $

12,478      
13,793      
(257)    
26,014      
4,914      
218      
5,132      
(357)    
5,489     $

0.15     $
0.14     $

12,643       
13,891       
104       
26,638       
8,656       
(59 )     
8,597       
1,187       
7,410     $ 

0.20     $ 
0.19     $ 

36,259      
37,708      

37,053      
38,239      

37,910       
39,009       

65 

63,560  
29,266  
34,294  

12,487  
13,683  
84  
26,254  
8,040  
(57)
7,983  
484  
7,499  

0.20  
0.19  

38,328  
39,524  

  
  
  
 
 
 
 
 
 
  
   
 
  
 
 
  
 
   
   
    
 
  
 
 
      
        
        
        
 
  
      
        
        
        
 
      
        
        
        
 
  
 
 
Revenue .................................................................  $
Cost of revenue .....................................................   
Gross profit ....................................................   

Operating expenses: 

Research and development ................................   
Selling, general and administrative ....................   
Litigation expense (benefit), net ........................   
Total operating expenses ................................   
Income from operations ........................................   
Interest and other income (expense), net ...............   
Income before income taxes ..................................   
Income tax provision .............................................   
Net income ............................................................  $

Basic net income per share ....................................  $
Diluted net income per share .................................  $
Weighted average common shares outstanding: 

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

Three Months Ended 

March 31, 
2012

June 30, 
2012

September 30, 
2012 

December 31,
2012

(in thousands, except per share amounts) 
56,508     $ 
26,495       
30,013       

58,607     $
27,435      
31,172      

50,484     $
24,074      
26,410      

11,118      
11,966      
128      
23,212      
3,198      
106      
3,304      
309      
2,995     $

0.09     $
0.08     $

12,468      
12,167      
(244)    
24,391      
6,781      
359      
7,140      
548      
6,592     $

0.19     $
0.18     $

11,967       
11,955       
(229 )     
23,693       
6,320       
156       
6,476       
555       
5,921     $ 

0.17     $ 
0.16     $ 

34,105      
35,538      

34,665      
35,997      

35,145       
36,438       

48,214  
22,661  
25,553  

13,243  
13,930  
(2,600)
24,573  
980  
(10)
970  
722  
248  

0.01  
0.01  

35,556  
36,763  

ITEM  9.    CHANGES  IN  AND  DISAGREEEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND 
FINANCIAL DISCLOSURE 

None. 

ITEM 9A.    CONTROLS AND PROCEDURES 

Evaluation of Disclosure Controls and Procedures 

Our  management,  with  the  participation  of  our  chief  executive  officer  and  chief  financial  officer,  evaluated  the 
effectiveness of our disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities 
Exchange Act of 1934 as of the end of the period covered by this Annual Report on Form 10-K.   

Based on this evaluation, our chief executive officer and chief financial officer concluded that, as of December 31, 2013, 
our disclosure controls and procedures are designed at a reasonable assurance level and are effective to provide reasonable 
assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, 
processed,  summarized,  and  reported  within  the  time  periods  specified  in  the  SEC’s  rules  and  forms,  and  that  such 
information is accumulated and communicated to our management, including our chief executive officer and chief financial 
officer, as appropriate, to allow timely decisions regarding required disclosure. 

Management’s Report on Internal Control over Financial Reporting 

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting.  Our 
management  conducted  an  evaluation  of  the  effectiveness  of  our  internal  control  over  financial  reporting  based  on  the 
framework in Internal Control—Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the 
Treadway Commission. Based on this evaluation, management concluded that our internal control over financial reporting 
was effective as of December 31, 2013. Management reviewed the results of its assessment with our Audit Committee.  

Our  independent  registered  public  accounting  firm,  Deloitte  &  Touche  LLP,  which  audited  the  consolidated  financial 
statements  included  in  this  Annual  Report  on  Form  10-K,  has  issued  an  attestation  report  on  the  effectiveness  of  our 
internal control over financial reporting.  

66 

 
  
 
 
  
 
   
   
    
 
  
 
 
      
        
        
        
 
  
      
        
        
        
 
      
        
        
        
 
 
  
  
  
  
  
  
  
  
  
Changes in Internal Control over Financial Reporting 

There were no changes in our internal control over financial reporting that occurred during the quarter ended December 31, 
2013 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 

Limitations on Effectiveness of Controls and Procedures 

In  designing  and  evaluating  the  disclosure  controls  and  procedures,  management  recognizes  that  any  controls  and 
procedures,  no  matter  how  well  designed  and  operated,  can  provide  only  reasonable  assurance  of  achieving  the  desired 
control objectives. In addition, the design of disclosure controls and procedures must reflect the fact that there are resource 
constraints  and  that  management  is  required  to  apply  its  judgment  in  evaluating  the  benefits  of  possible  controls  and 
procedures relative to their costs. 

67 

  
  
  
   
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of 
Monolithic Power Systems, Inc. 
San Jose, California 

We  have  audited  the  internal  control  over  financial  reporting  of  Monolithic  Power  Systems,  Inc.  and  subsidiaries  (the 
"Company")  as  of  December  31,  2013,  based  on  criteria  established  in  Internal  Control  -  Integrated  Framework  (1992) 
issued by the Committee of Sponsoring Organizations of the Treadway Commission (the COSO criteria). The Company's 
management is responsible for maintaining effective internal control over financial reporting and for its assessment of the 
effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal 
Control  Over  Financial  Reporting.  Our  responsibility  is  to  express  an  opinion  on  the  Company's  internal  control  over 
financial reporting based on our audit. 

We  conducted  our  audit  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective 
internal  control  over  financial  reporting  was  maintained  in  all  material  respects.  Our  audit  included  obtaining  an 
understanding  of  internal  control  over  financial  reporting,  assessing  the  risk  that  a  material  weakness  exists,  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. 

A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's 
principal executive and principal financial officers, or persons performing similar functions, and effected by the company's 
board of directors, management, and other personnel 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  the  inherent  limitations  of  internal  control  over  financial  reporting,  including  the  possibility  of  collusion  or 
improper management override of controls, material misstatements due to error or fraud may not be prevented or detected 
on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to 
future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the 
degree of compliance with the policies or procedures may deteriorate. 

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of 
December 31, 2013, based on the COSO criteria. 

We  have  also  audited,  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States),  the  consolidated  financial  statements  as  of  and  for  the  year  ended  December  31,  2013  of  the  Company  and  our 
report dated March 10, 2014 expressed an unqualified opinion on those financial statements. 

/s/ DELOITTE & TOUCHE LLP 

San Jose, California 
March 10, 2014 

ITEM 9B.    OTHER INFORMATION 

None. 

68 

  
  
  
  
  
  
  
  
  
 
  
  
 
 
PART III 

ITEM 10.    DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE 

Reference is made to the information regarding directors and nominees, code of ethics, corporate governance matters and 
disclosure relating to compliance with Section 16(a) of the Securities Exchange Act of 1934 appearing under the captions 
“Election  of  Directors”  and  “Compliance  with  Section  16(a)  Beneficial  Ownership  Reporting  Compliance”  in  the 
Company’s Proxy Statement for its Annual Meeting of Stockholders (the “2014 Annual Meeting”), which information is 
incorporated  in  this  Form  10-K  by  reference.  Information  regarding  executive  officers  is  set  forth  under  the  caption 
“Executive Officers of the Registrant” in Part I of this Form 10-K. 

ITEM 11.    EXECUTIVE COMPENSATION 

The information required by this item will be set forth under “Executive Officer Compensation” in our Proxy Statement for 
the 2014 Annual Meeting, and is incorporated herein by reference. 

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

The  information  required  by  this  item  will  be  set  forth  under  the  captions  “Security  Ownership  of  Certain  Beneficial 
Owners  and  Management”  and  “Equity  Compensation  Plan  Information”  in  our  Proxy  Statement  for  the  2014  Annual 
Meeting, and is incorporated herein by reference. 

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

The information required by this item will be set forth under the captions “Certain Relationships and Related Transactions” 
and “Election of Directors” in our Proxy Statement for the 2014 Annual Meeting, and is incorporated herein by reference. 

ITEM 14.    PRINCIPAL ACCOUNTING FEES AND SERVICES 

The information required by this item will be set forth under the caption “Audit and Other Fees” in our Proxy Statement for 
the 2014 Annual Meeting, and is incorporated herein by reference. 

69 

  
  
  
  
  
  
  
  
  
  
   
 
 
ITEM 15.    EXHIBITS AND FINANCIAL STATEMENT SCHEDULES. 

PART IV 

(a) Documents filed as part of this report 

(1) All financial statements 

Report of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets 
Consolidated Statements of Operations 
Consolidated Statements of Comprehensive Income 
Consolidated Statements of Stockholders’ Equity 
Consolidated Statements of Cash Flows 
Notes to Consolidated Financial Statements 

(2) Schedules 

All  schedules  have  been  omitted  because  the  required  information  is  not  present  or  not  present  in  amounts 
sufficient  to  require  submission  of  the  schedules,  or  because  the  information  required  is  included  in  the  consolidated 
financial statements or notes thereto. 

(3) Exhibits 

Exhibit 
Number 

Description

3.1 (1) 

   Amended and Restated Certificate of Incorporation. 

3.2 (2) 

   Amended and Restated Bylaws. 

10.1+ (3) 

   Registrant’s 1998 Stock Plan and form of option agreement. 

10.2+ (4) 

   Registrant’s Amended 2004 Equity Incentive Plan and form of option agreement. 

10.3+ (5) 

   Registrant’s 2004 Employee Stock Purchase Plan and form of subscription agreement. 

10.4+ (6) 

   Form of Directors’ and Officers’ Indemnification Agreement. 

10.5† (7) 

   Foundry  Agreement  between  the  Registrant  and  Advanced  Semiconductor  Manufacturing  Corp.  of

Shanghai, dated August 14, 2001. 

10.6 (8) 

   Office  Lease,  First  Amendment  to  Office  Lease,  and  Second  Amendment  to  Office  Lease  between  the
Registrant and Boccardo Corporation, dated May 6, 2002, October 30, 2003, and May 6, 2004, respectively.

10.7+ (9) 

   Employment Agreement with Michael Hsing and Amendment thereof. 

10.8+ (10) 

   Employment Agreement with Maurice Sciammas and Amendment thereof. 

10.9+ (11) 

   Employment Agreement with Jim Moyer. 

10.10+(12) 

   Employment Agreement with Deming Xiao and Amendment thereof. 

10.11+(13) 

   Employment Agreement with Paul Ueunten and Amendment thereof.  

10.12 (14) 

   Distribution Agreement with Asian Information Technology Inc. Ltd., dated March 1, 2004. 

10.13 (15) 

   Business Purchase Agreement with Uppertech Hong Kong Ltd., dated March 1, 2004. 

70 

  
  
  
  
  
  
  
  
   
   
      
   
      
   
      
   
      
   
      
   
      
   
      
   
      
   
      
   
      
  
   
      
   
      
   
      
   
      
   
      
10.14†(16) 

   Investment and Cooperation Contract, dated August 19, 2004. 

10.15†(17) 

   Patent License Agreement, dated May 1, 2004. 

10.16†(18) 

   Settlement Agreement with Linear Technology Corporation. 

10.17+(19) 

   Employment Agreement with C. Richard Neely, Jr. and Amendment thereof.  

10.18 (20) 

   Settlement Agreement with Microsemi Corporation. 

10.19 (21) 

   Settlement Agreement with Micrel Corporation. 

10.20+(22) 

   Employment Agreement with Adriana Chiocchi and Amendment thereof. 

10.21+(23) 

   Form of Performance Unit Agreement. 

10.22 (24) 

   Sublease Agreement between the Registrant and FedEx Freight West, Inc. and Brokaw Interests dated June

13, 2006. 

10.23+(25) 

   Letter Agreement with Victor Lee. 

10.24 (26) 

   Sublease Agreement between the Registrant and Anchor Bay Technologies for the property located at 983 

University Avenue, Building A, Los Gatos, CA 95032 dated May 14, 2007. 

10.25+(27) 

   Letter Agreement with Douglas McBurnie. 

10.26+(28) 

   Letter Agreement with Karen A. Smith Bogart. 

10.27 (29) 

   Settlement Agreement with Taiwan Sumida Electronics. 

10.28+(30) 

   Registrant’s Employee Bonus Plan, as amended effective March 6, 2008. 

10.29 (31) 

   Lease Agreement between the Registrant and Brokaw Interests, dated October 23, 2008. 

10.30+(32) 

   Form of Restricted Stock Award Agreement. 

10.31+(33) 

   Termination Agreement between the Company and Adriana Chiocchi, dated December 18, 2009. 

10.32+(34) 

   Letter Agreement with Jeff Zhou. 

10.33+(35) 

   Employment Agreements with Meera P. Rao and Saria Tseng and Amendments thereof. 

10.34 +(36)     Monolithic Power Systems, Inc. 2014 Equity Incentive Plan. 

10.35+ (37)     Monolithic Power Systems, Inc. Master Cash Performance Bonus Plan. 

10.36+ 

   Letter Agreement with Eugen Elmiger. 

21.1 

23.1 

24.1 

31.1 

   Subsidiaries of Monolithic Power Systems, Inc. 

   Consent of Independent Registered Public Accounting Firm. 

   Power of Attorney (included on Signature page to this Form 10-K). 

   Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), 

as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 

31.2 

   Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), 

as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 

71 

  
      
   
      
   
      
  
     
  
     
    
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
     
  
  
     
  
  
     
   
      
   
      
   
      
   
      
32.1* 

   Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as

adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 

101.INS** 

   XBRL Instance 

101.SCH**     XBRL Taxonomy Extension Schema 

101.CAL**     XBRL Taxonomy Extension Calculation 

101.DEF**     XBRL Taxonomy Extension Definition 

101.LAB**     XBRL Taxonomy Extension Labels 

101.PRE**     XBRL Taxonomy Extension Presentation 

+ 
† 

* 

** 

(1) 

(2) 

(3) 

(4) 

(5) 

(6) 

(7) 

(8) 

(9) 

(10) 

(11) 

(12) 

Management contract or compensatory plan or arrangement. 
Confidential  treatment  requested  for  portions  of  this  agreement,  which  portions  have  been  omitted  and  filed 
separately with the Securities and Exchange Commission 
This  exhibit  shall  not  be deemed  “filed”  for purposes of  Section  18  of  the  Securities  Exchange  Act  of  1934 or
otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference in any filings
under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date
hereof and irrespective of any general incorporation language in any filings. 
XBRL information is furnished and not filed or a part of a registration statement or prospectus for purposes of
sections 11 or 12 of the Securities Act of 1933, as amended, is deemed not filed for purposes of section 18 of the
Securities Exchange Act of 1934, as amended, and otherwise is not subject to liability under these sections. 
Incorporated by reference to Exhibit 3.2 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 15, 2004. 
Incorporated by reference to Exhibit 3.4 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 15, 2004. 
Incorporated  by  reference  to  Exhibit  10.1  of  the  Registrant’s  Registration  Statement  on  Form  S-1  (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 
Incorporated  by  reference  to  Exhibit  10.2  of  the  Registrant’s  Registration  Statement  on  Form  S-1  (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on July 13, 2004 and to exhibits 9.01(c)(1)
and 9.01(c)(2) to the Registrant’s Current Report on Form 8-K (File No. 000-51026), filed with the Securities and 
Exchange Commission on December 7, 2004. 
Incorporated  by  reference  to  Exhibit  10.3  of  the  Registrant’s  Registration  Statement  on  Form  S-1  (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 
Incorporated by reference to Exhibit 10.4 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 15, 2004. 
Incorporated by reference to Exhibit 10.5 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 2, 2004. 
Incorporated  by  reference  to  Exhibit  10.6  of  the  Registrant’s  Registration  Statement  on  Form  S-1  (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 
Incorporated by reference to Exhibit 10.7 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed  with  the  Securities  and  Exchange  Commission  on  March  11,  2008  and  Exhibit  10.1  of  the  Registrant’s
current  report  on  Form  8-K  (File  No.  000-51026),  filed  with  the  Securities  and  Exchange  Commission  on
December 19, 2008. 
Incorporated by reference to Exhibit 10.8 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed  with  the  Securities  and  Exchange  Commission  on  March  11,  2008  and  Exhibit  10.3  of  the  Registrant’s
current  report  on  Form  8-K  (File  No.  000-51026),  filed  with  the  Securities  and  Exchange  Commission  on 
December 19, 2008. 
Incorporated  by  reference  to  Exhibit  10.9  of  the  Registrant’s  Registration  Statement  on  Form  S-1  (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 
Incorporated by reference to Exhibit 10.10 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed  with  the  Securities  and  Exchange  Commission  on  March  11,  2008  and  Exhibit  10.4  of  the  Registrant’s
current  report  on  Form  8-K  (File  No.  000-51026),  filed  with  the  Securities  and  Exchange  Commission  on
December 19, 2008. 

72 

   
      
   
      
   
      
   
      
   
      
   
      
   
      
 
 
(13) 

(14) 

(15) 

(16) 

(17) 

(18) 

(19) 

(20) 

(21) 

(22) 

(23) 

(24) 

(25) 

(26) 

(27) 

(28) 

(29) 

(30) 

(31) 

(32) 

(33) 

(34) 

(35) 

Incorporated by reference to Exhibit 10.11 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed  with  the  Securities  and  Exchange  Commission  on  March  11,  2008  and  Exhibit  10.6  of  the  Registrant’s 
current  report  on  Form  8-K  (File  No.  000-51026),  filed  with  the  Securities  and  Exchange  Commission  on
December 19, 2008. 
Incorporated by reference to Exhibit 10.11 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on September 10, 2004. 
Incorporated by reference to Exhibit 10.12 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on September 10, 2004. 
Incorporated by reference to Exhibit 10.13 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on September 10, 2004. 
Incorporated by reference to Exhibit 10.14 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on September 10, 2004. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s quarterly report on Form 10-Q (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 13, 2006. 
Incorporated by reference to Exhibit 10.17 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed  with  the  Securities  and  Exchange  Commission  on  March  11,  2008  and  Exhibit  10.2  of  the  Registrant’s
current  report  on  Form  8-K  (File  No.  000-51026),  filed  with  the  Securities  and  Exchange  Commission  on
December 19, 2008. 
Incorporated by reference to Exhibit 10.18 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 28, 2006. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on September 22, 2006. 
Incorporated by reference to Exhibit 10.20 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed  with  the  Securities  and  Exchange  Commission  on  March  11,  2008  and  Exhibit  10.5  of  the  Registrant’s
current  report  on  Form  8-K  (File  No.  000-51026),  filed  with  the  Securities  and  Exchange  Commission  on
December 19, 2008. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on November 1, 2006. 
Incorporated by reference to Exhibit 99.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on June 16, 2006. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on September 14, 2006. 
Incorporated by reference to Exhibit 10 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on May 17, 2007 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on May 25, 2007 
Incorporated by reference to Exhibit 10.2 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on May 25, 2007 
Incorporated by reference to Exhibit 10.5 of the Registrant’s quarterly report on Form 10-Q (File No. 000-51026), 
filed with the Securities and Exchange Commission on August 1, 2007. 
Incorporated by reference to Exhibit 10.31 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 11, 2008. 
Incorporated by reference to Exhibit 10 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on October 24, 2008. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on February 15, 2008. 
Incorporated by reference to Exhibit 10.31 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on February 16, 2010. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on February 3, 2010. 
Incorporated by reference to Exhibit 10.33 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 4, 2011. 

73 

 
 
(36) 

(37) 

Incorporated  by  reference  to  Annexure  B  of  the  Registrant’s  Proxy  Statement  on  Schedule  14A  (File  No.  000-
51026), filed with the Securities and Exchange Commission on April 30, 2013. 
Incorporated  by  reference  to  Annexure  C  of  the  Registrant’s  Proxy  Statement  on  Schedule  14A  (File  No.  000-
51026), filed with the Securities and Exchange Commission on April 30, 2013. 

74 

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

caused this Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized. 

SIGNATURES 

MONOLITHIC POWER SYSTEMS, INC.    

By: /s/ MICHAEL R. HSING 
   Michael R. Hsing 
   President and Chief Executive Officer 

Date: March 10, 2014 

KNOW  ALL  PERSONS  BY  THESE  PRESENTS,  that  each  person  whose  signature  appears  below  constitutes 
and  appoints  Michael  R.  Hsing  and  Meera  P.  Rao,  and  each  of  them,  as  his  or her  true  and  lawful attorneys-in-fact  and 
agents, with full power of substitution and re-substitution, for him or her and in his or her name, place, and stead, in any 
and all capacities, to sign any and all amendments to this Report, and to file the same, with all exhibits thereto, and other 
documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and 
agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary 
to be done in connection therewith, as fully to all intents and purposes as he or she might or could do in person, hereby 
ratifying  and  confirming  that  all  said  attorneys-in-fact  and  agents,  or  any  of  his  or  her  substitute  or  substitutes,  may 
lawfully do or cause to be done by virtue hereof. 

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below on March 10, 

2014 by the following persons on behalf of the registrant and in the capacities indicated: 

/S/ MICHAEL R. HSING 
MICHAEL R. HSING 

/S/ MEERA P. RAO 
MEERA P. RAO 

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

   Chief Financial Officer (Principal Financial and Accounting Officer) 

/S/ KAREN A. SMITH BOGART 
KAREN A. SMITH BOGART 

   Director 

/S/ HERBERT CHANG 
HERBERT CHANG 

/S/ EUGEN ELMIGER 
EUGEN ELMIGER 

/S/ VICTOR K. LEE 
VICTOR K. LEE 

   Director 

   Director 

   Director 

/S/ DOUGLAS MCBURNIE 
DOUGLAS MCBURNIE 

   Director 

/S/ JAMES C. MOYER 
JAMES C. MOYER 

/S/ JEFF ZHOU 
JEFF ZHOU 

   Director 

   Director 

75