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Alpha and Omega Semiconductor Limited

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FY2016 Annual Report · Alpha and Omega Semiconductor Limited
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UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 
_________________________________
FORM 10-K
_________________________________

(MARK ONE) 

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

For the fiscal year ended June 30, 2016 

OR 

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

FOR THE TRANSITION PERIOD FROM              TO              

Commission file number 001-34717 
__________________________

Alpha and Omega Semiconductor Limited 

(Exact name of Registrant as Specified in its Charter) 

Bermuda
(State or Other Jurisdiction of Incorporation or Organization)

77-0553536
(I.R.S. Employer Identification Number)

Clarendon House, 2 Church Street
Hamilton HM 11, Bermuda
 (Address of Principal Registered
 Offices including Zip Code) 
(408) 830-9742 
(Registrant's Telephone Number, Including Area Code) 
__________________________________________
Securities registered pursuant to Section 12(b) of the Act: 

Title of each class
Common Shares, $0.002 par value per share

Name of each exchange on which registered

The NASDAQ Global 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.    Yes  
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 

    No  

    No  

1934 during the preceding 12 months, (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such 
filing requirements for the past 90 days.    Yes  

    No  

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File 

required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such 
shorter period that the registrant was required to submit and post such files).    Yes  

   No  

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

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

See definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one): 

Large accelerated filer  

Accelerated filer  

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

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 aggregate market value of the voting shares held by non-affiliates of the registrant as of December 31, 2015 was approximately $162 million 

based on the closing price of the registrant's common share as reported on the NASDAQ Global Market on December 31, 2015 (the last business day of 
the registrant's most recently completed second fiscal quarter).  The common shares of the registrant held by each executive officer and director and 
certain affiliated shareholders who beneficially owned 10% or more of the outstanding common stock of the registrant have been excluded in such 
calculation as such persons and entities may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination 
for other purposes.  

There were 22,755,936 shares of the registrant's common shares outstanding as of July 31, 2016.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant's Proxy Statement for the registrant's 2016 Annual Meeting of Shareholders are incorporated by reference into Part III of 

this Form 10-K to the extent stated herein. The Definitive Proxy Statement is expected to be filed within 120 days of the registrant's fiscal year ended 
June 30, 2016. 

 
 
Alpha and Omega Semiconductor Limited
Form 10-K 
For the Year Ended June 30, 2016 
TABLE OF CONTENTS 

Part I.
    Item 1.

Business

    Item 1A.

Risk Factors

    Item 1B. Unresolved Staff Comments

    Item 2.

    Item 3.

    Item 4.
Part II.
    Item 5.

Properties

Legal Proceedings

Mine Safety Disclosures

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

    Item 6.

Selected Financial Data

    Item 7.
    Item 7A. Quantitative and Qualitative Disclosures About Market Risk

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

    Item 8.

    Item 9.

Financial Statements and Supplementary Data

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

    Item 9A.

Controls and Procedures

    Item 9B. Other Information
Part III.
    Item 10.

Directors, Executive Officers and Corporate Governance

    Item 11.

Executive Compensation

    Item 12.

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

    Item 13.

Certain Relationships and Related Transactions, and Director Independence

    Item 14.
Part IV.
    Item 15.
Signatures

Principal Accounting Fees and Services

Exhibits and Financial Statement Schedules

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(This page intentionally left blank.)

Item 1. 

Business 

Forward Looking Statements 

PART I

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, which are subject to the “safe harbor” created by those sections. Forward-looking 
statements are based on our management's beliefs and assumptions and on information currently available to our management. 
In some cases, you can identify forward-looking statements by terms such as “may,” “will,” “should,” “could,” “intend,” 
“would,” “expect,” “plan,” “anticipate,” “believe,” “estimate,” “project,” “predict,” “potential” and similar expressions 
intended to identify forward-looking statements. These statements involve known and unknown risks, uncertainties and other 
factors, which may cause our actual results, performance, time frames or achievements to be materially different from any 
future results, performance, time frames or achievements expressed or implied by the forward-looking statements. We discuss 
many of these risks, uncertainties and other factors in this Annual Report on Form 10-K in greater detail in Item 1A.“Risk 
Factors.” Given these risks, uncertainties and other factors, you should not place undue reliance on these forward-looking 
statements. Also, these forward-looking statements represent our estimates and assumptions only as of the date of this filing. 
You should read this Annual Report on Form 10-K in its entirety and with the understanding that our actual future results may 
be materially different from what we expect. We hereby qualify our forward-looking statements by these cautionary statements. 
Except as required by law, we assume no obligation to update these forward-looking statements publicly, or to update the 
reasons actual results could differ materially from those anticipated in these forward-looking statements, even if new 
information becomes available in the future. 

Overview 

We are a designer, developer and global supplier of a broad portfolio of power semiconductors.  Our portfolio of power 

semiconductors includes approximately 1,600 products, and has grown significantly with the introduction of over 90 new 
products during each of the fiscal years ended June 30, 2016, 2015 and 2014.  Our teams of scientists and engineers have 
developed extensive intellectual properties and technical knowledge that encompass major aspects of power semiconductors, 
which we believe it enables us to introduce and develop innovative products to address the increasingly complex power 
requirements of advanced electronics.  We have an extensive patent portfolio that consists of 601 patents and 150 patent 
applications in the United States as of June 30, 2016. We differentiate ourselves by integrating our expertise in technology, 
design, manufacturing capability and advanced packaging to optimize product performance and cost.  Our portfolio of products 
targets high-volume applications, including personal computers, flat panel TVs, LED lighting, smart phones, battery packs, 
consumer and industrial motor controls and power supplies for TVs, computers, servers and telecommunications equipment.

During the fiscal year ended June 30, 2016, we continued our diversification strategy by developing new silicon and 

packaging platforms to expand our serviceable available market, or SAM and offer higher performance products.  Our metal-
oxide-semiconductor field-effect transistors, or MOSFET, portfolio expanded significantly across a full range of voltage 
applications.  We also developed new technologies and products designed to penetrate into markets beyond our MOSFET 
computing base, including the consumer, communications and industrial markets as well as power IC for the next generation 
computing applications.   

Our business model leverages global resources, including research and development and manufacturing in the United 
States and Asia.  Our sales and technical support teams are localized in several growing markets primarily in Asia.  We operate 
a 200mm wafer fabrication facility located in Hillsboro, Oregon, or the Oregon fab, which enables us to accelerate proprietary 
technology development, new product introduction and improve our financial performance.  To meet the market demand for the 
more mature high volume products, we also utilize the wafer manufacturing capacity of selected third party foundries.  For 
assembly and test, we primarily rely upon our in-house facilities in China.  In addition, we utilize subcontracting partners for 
industry standard packages.  We believe our in-house packaging and testing capability provides us with a competitive 
advantage in proprietary packaging technology, product quality, costs and sales cycle time.

On March 29, 2016, we entered into a joint venture contract (the “JV Agreement”) with two investment funds affiliated 

with the municipalities of Chongqing (the “Chongqing Funds”), pursuant to which we and Chongqing Funds form a joint 
venture, (the “JV Company”), for the purpose of constructing a power semiconductor packaging, testing and wafer fabrication 
facility in the Liangjiang New Area of Chongqing, China (the “JV Transaction”).  The total initial capitalization of the JV 
Company will be $330.0 million (the “Initial Capitalization”).  The Initial Capitalization will be completed in stages 
commencing on the incorporation of the JV Company.  We own 51%, and the Chongqing Funds own 49%, of the equity interest 
in the JV Company.  We expect the JV company to commence its initial production in the first half of fiscal 2018.  Over the 

1

long term, the JV Company expects to construct a 12-inch wafer fabrication facility for the production of power 
semiconductors. 

We were incorporated in Bermuda on September 27, 2000 as an exempted limited liability company.  The address of our 

registered office is Clarendon House, 2 Church Street, Hamilton HM 11, Bermuda.  Our agent for service of process in the U.S. 
for the purpose of our securities filings is our Chief Executive Officer, Mike F. Chang, c/o Alpha and Omega Semiconductor 
Incorporated, 475 Oakmead Parkway, Sunnyvale, CA 94085.  Telephone number of our agent is (408) 830-9742.

We have incorporated various wholly-owned subsidiaries in different jurisdictions, and a subsidiary in which it has a 

controlling interest.  Please refer to Exhibit 21.1 for a complete list of our subsidiaries.

Our industry 

Semiconductors are electronic devices that perform a variety of functions, such as converting or controlling signals, 

processing data and delivering or managing power.  With advances in semiconductor technology, the functionality and 
performance of semiconductors have generally increased over time, while size and cost have generally decreased.  These 
advances have led to a proliferation of more complex semiconductors being used in a wide variety of consumer, computing, 
communications and industrial markets and have contributed to the growth of the semiconductor industry.

Analog semiconductors

The semiconductor industry is segmented into analog and digital.  Analog semiconductors process light, sound, motion, 
radio waves and electrical currents and voltages.  In contrast, digital semiconductors process binary signals represented by a 
sequence of ones and zeros.

As a result of these fundamental differences, the analog semiconductor industry is distinct from the digital semiconductor 

industry in terms of the complexity of design and the length of product cycle.  Improper interactions between analog circuit 
elements can potentially render an electronic system inoperable.  Experienced engineers engaged in the design process are 
necessary because computer-aided design cannot fully model the behavior of analog circuitry.  Therefore, experienced analog 
engineers with requisite knowledge are in great demand but short supply worldwide.  In addition, analog semiconductors tend 
to have a longer product life cycle because original design manufacturers, or ODMs and original equipment manufacturers, or 
OEMs typically design the analog portions of a system to span multiple generations of their products.  Once designed into an 
application, the analog portion is rarely modified because even a slight change to the analog portion can cause unexpected 
interactions with other components, resulting in system instability.

Power semiconductors

Power semiconductors are a subset of the analog semiconductor sector with their own set of characteristics unique to 
power architecture and function.  Power semiconductors transfer, manage and switch electricity to deliver the appropriate 
amount of voltage or current to a broad range of electronic systems and also protect electronic systems from damage resulting 
from excessive or inadvertent electrical charges.

Power semiconductors can be either discrete devices, which typically comprise only a few transistors or diodes, or ICs, 

which incorporate a greater number of transistors.  The function of power discretes is power delivery by switching, transferring 
or converting electricity.  Power transistors comprise the largest segment of the power discretes market.  Power ICs, sometimes 
referred to as power management ICs, perform power delivery and power management functions, such as controlling and 
regulating voltage and current and controlling power discretes.

The growth of the power semiconductor market in recent years has several key drivers.  The proliferation of computer and 

consumer electronics, such as desktop computers, notebooks, tablets, smart phones, flat panel displays and portable media 
players created the need for sophisticated power management to improve power efficiency and extend battery life.  The 
evolution of these products is characterized by increased functionality, thinner or smaller form factors and decreasing prices.  
Our Power IC and low voltage (5V-40V) MOSFET products address this market.  In the area of AC-DC power supplies for 
electronic equipment, data centers and servers, the market is characterized by a continuous demand for energy conservation 
through higher efficiency, which is driving the need for our medium voltage (40V-400V) and high voltage (500V-1000V) 
MOSFET products.  The increased application of power semiconductors to control motors in white goods and industrial 
applications, is driving demand for Insulated Gate Bipolar Transistors, or IGBTs.  IGBTs are also being used in renewable 
energy and automotive applications.

2

The evolution toward smaller form factors and complex power requirements in the low voltage areas has driven further 

integration in power semiconductors, resulting in power ICs that incorporate the functionalities of both power management and 
power delivery functions in a single device.  Power ICs can be implemented by incorporating all necessary power functions 
either on one piece of silicon or multiple silicon chips encapsulated into a single device.  Additionally, the advancement in 
semiconductor packaging technology enables increased power density and shrinking form factors.

Power semiconductor suppliers develop and manufacture their products using various approaches which tend to fall 
across a wide spectrum of balancing cost savings with proprietary technology advantages.  At one end of the spectrum are 
integrated design manufacturers, or IDMs, which own and operate the equipment used in the manufacturing process and design 
and manufacture products at their in-house facilities.  IDMs exercise full control over the implementation of process 
technologies and have maximum flexibility in setting priorities for their production and delivery schedules.  At the other end of 
the spectrum are completely-outsourced fabless semiconductor companies, which rely entirely on off-the-shelf technologies and 
processes provided by their manufacturing partners.  These companies seek to reduce or eliminate fixed costs by outsourcing 
both product manufacturing and development of process technologies to third parties.  The “fab-lite” model seeks to achieve 
the best balance between technological advancement and cost effectiveness by using a dedicated in-house technology 
laboratory to drive rapid new product developments, while utilizing third-party foundry capacity for mature products.  This is 
particularly important in the development of power semiconductor products due to the unique nature of their technology.  While 
digital technologies are highly standardized in leading foundries, power semiconductor technologies tend to be more unique as 
they seek to accommodate a wider range of voltage applications.  Accordingly, third-party foundries, which are primarily setup 
for digital technologies, can be limited when it comes to the development of new power semiconductor technologies.

Our strategies 

Our strategy is to advance our position as a designer, developer and global supplier of a broad portfolio of power 

semiconductors utilizing a fab-lite business model.

 The fab-lite business model allows us to accelerate the development of our proprietary technology at our Oregon fab,  

bring new products to market faster, and improve our financial performance in the long run.  This “fab-lite” model also 
provides quicker response to our customer demands, enhances relationships with strategic customers, provides flexibility in 
capacity management and geographic diversification of our wafer supply chain.  This approach allows us to retain a higher 
level of control over the development and application of our proprietary process technology, thereby reducing certain 
operational risks and costs associated with utilizing third-party foundries.  

In response to the decline of the global PC market, we continue to execute our strategies of diversifying our portfolio of 
products and expanding into other market segments, including the consumer, communications and industrial market segments, 
improving gross margin and profit by implementing cost control measures.  We have been making progress in reducing our 
reliance on the PC market, but we are also committed to continue to support our computing business by growing bill-of-
material content, expanding market share, and acquiring new customers.

We plan to further expand the breadth of our product portfolio to increase our total bill-of-materials within an electronic 

system and to address the power requirements of additional electronic systems.  Our product portfolio currently consists of 
approximately 1,600 products and we have introduced over 90 new products in this past fiscal year.  We will continue to 
leverage our expertise to further increase our product lines, including higher performance power ICs, IGBTs and high and 
medium voltage MOSFETs, in order to broaden our addressable market and improve our margin profile.  We also believe that 
our increased product offerings will allow us to penetrate new end-market applications and provide us with an important 
competitive advantage.  OEMs and ODMs generally prefer to limit their supplier base to a smaller set of vendors capable of 
providing a comprehensive menu of products across multiple electronic platforms.

Leverage our power semiconductor expertise to drive new technology platforms

We believe that the ever-increasing demand for power efficiency in power semiconductors requires expertise in and a 

deep understanding of the interrelationship among device physics, process technologies, design and packaging.  We also believe 
that engineers with experience and understanding of these multiple disciplines are in great demand but short supply.  Within 
this context, we believe that we are well positioned to be a leader in providing total power management solutions due to our 
extensive pool of experienced scientists and engineers and our strong IP portfolio.  Accordingly, we intend to leverage our 
expertise to increase the number of power discrete technology platforms and power IC designs to expand our product offerings 
and deliver complete power solutions for our targeted applications.

Increase direct relationships and product penetration with OEM and ODM customers

3

We have developed direct relationships with key OEMs who are responsible for branding, designing and marketing a 

broad array of electronic products, as well as ODMs who have traditionally been responsible for manufacturing these products.  
While OEMs typically focus their design efforts on their flagship products, as the industry has evolved, ODMs are increasingly 
responsible for designing portions, or entire systems, of the products they manufacture for the OEMs.  In addition, several 
ODMs are beginning to design, manufacture and brand their own proprietary products which they sell directly to consumers. 
We intend to strengthen our existing relationships and form new ones with both OEMs and ODMs by aligning our product 
development efforts with their product requirements, increasing the number of our products used within their systems, and 
leveraging our relationships to penetrate their other products.  In addition, we are refocusing our research and development 
efforts to respond more directly to the market demand by designing and developing new products based on feedback from our 
customers, which also allows us to reduce time-to-market and sales cycles.

Leverage global business model for cost-effective growth

We intend to continue to leverage our global resources and regional strengths.  We will continue to deploy marketing, 
sales and technical support teams in close proximity to our end customers.  We plan to further expand and align our technical 
marketing and application support teams along with our sales team to better understand and address the needs of our end 
customers and their end-market applications, in particular for those with the new technology platforms developed in this past 
year and in the future.  This will assist us in identifying and defining new technology trends and products and to help us gain 
additional design wins.  In addition, we have established a joint venture with investment funds affiliated with the municipalities 
of Chongqing, China for the purpose of constructing a power semiconductor packaging, testing and wafer fabrication.  We 
expect our collaboration with Chongqing will, in the long term, reduce the cost of manufacturing our products and accelerate 
the development of new products, while allowing us to gain valuable access to new customers in China.   

Our products 

To serve the large and diverse analog market for power semiconductors, we have created a broad product portfolio 

consisting of two major categories: power discretes and power ICs.  

Our power discretes products consist primarily of low, medium and high voltage power MOSFETs.  Our low-voltage 
MOSFET series is based on our proprietary technology, which offers increased efficiency and performance by reducing on-
resistance and switching losses.  We also introduced the compact AlphaDFN package series that has been designed to enhance 
power dissipation while providing protection to the chip for easier and safer handling when surface mounting.  Our mid-voltage 
MOSFET portfolio offers high efficiency solutions for advanced telecommunications and industrial power supply applications.  
Our high-voltage portfolio includes our proprietary insulated-gate bipolar transistor ("IGBT") technology, which we developed 
highly robust and easy-to-use solutions designed for industrial motor control and white goods applications.

Our power ICs deliver power as well as control and regulate the power management variables, such as the flow of current 
and level of voltage.  We continued to expand our EZBuck power IC family with products that feature lower on-resistance, less 
power consumption, small footprint and thermally enhanced packages.  While we derive the majority of our revenue from the 
sales of power discretes products, sales of power ICs continue to gain traction during the past years.

4

The following table lists our product families and the principal end uses of our products:

Product Family
Power Discretes

Description
Low on-resistance switch 
used for routing current 
and switching voltages in 
power control circuits
High power switches used 
for power circuits

Product Categories
within Product Type
DC-AC conversion
AC-DC conversion
Load switching
Motor control
Battery protection
Power factor 
correction

Typical Application
Notebooks, Ultrabooks,
desktop and tablet PC's,
servers, flat panel displays,
TVs, graphics cards, game
boxes, chargers, battery
packs, AC adapters, power
supplies, E-bikes, motor
control, smart phones and
other portable devices, white
goods and industrial motor
drives, UPS systems, wind
turbines, solar inverters and
industrial welding

Power ICs

Integrated devices used for
power management and
power delivery

DC-DC Buck 
conversion
DC-DC Boost 
conversion
Smart load switching                                                                                                      
DrMOS power stage

Flat panel displays, TVs,
Notebooks, Ultrabooks,
servers, DVD/Blu-Ray
players, set-top boxes, and
networking equipment

Analog power devices
used for circuit protection
and signal switching

Transient voltage 
protection
Analog switch
Electromagnetic 
interference filter

Notebooks, Ultrabooks,
desktop PCs, tablets, flat
panel displays, TVs,
smartphones, and portable
electronic devices

Power discrete products

Power discretes are used across a wide voltage and current spectrum, requiring them to operate efficiently and reliably 

under harsh conditions.  Due to this wide applicability across diverse end-market applications, we market general purpose 
MOSFETs that are used in multiple applications as well as MOSFETs targeted for specific applications.

Our current power discrete product line includes industry standard trench MOSFETs, SRFETs, XSFET, electrostatic 

discharge, protected MOSFETs, high and mid-voltage MOSFETs and IGBTs.

Power IC products

In addition to the traditional monolithic or single chip design, we employ a multi-chip approach for the majority of our 

power ICs. This multi-chip technique leverages our proprietary MOSFET and advanced packaging technologies to offer 
integrated solutions to our customers.  This allows us to update product portfolios by interchanging only the MOSFETs without 
changing the power management IC, thereby reducing the time required for new product introduction and providing optimal 
solutions to our customers.  We believe that our power IC products improve our competitive position by enabling us to provide 
higher power density solutions to our end customers than our competitors.

The incorporation of both power delivery and power management functions tends to make power ICs more application 

specific because these two functions have to be properly matched to a particular end product.  We have local technical 
marketing and applications engineers who closely collaborate with our end customers to help ensure that power IC 
specifications are properly defined at the beginning of the design stage.

New Product Introduction

We introduced several new products based on our proprietary technology platform and continue to expand our product 

family by introducing new solutions to computing, battery protection, and smartphone fast chargers.  During the fourth quarter 
of fiscal year of 2016, we introduced Best-In-Class DrMOS-IV Power Modules with an EZPair™ package.  The new device 
enables high power density voltage regulator solutions ideal for Notebook PCs, servers, and graphic cards applications.  We 
also released 8 new products in the 60V MOSFET family during this period.  These products are designed for synchronous 
rectification in flyback converters, used in quick chargers for smart phones and other portable devices.  Moreover, we launched 
a second generation of Constant On-Time (COT) buck converters which provides the perfect solution for next generation 

5

 
computing chipsets that are pushing the limits of DC/DC converter size.  In addition, we introduced our first 2.38 mOhm device 
for battery protection.  This new device offers the best-in-class source-to-source on-resistance (Rsson), giving the battery 
protection circuit designer the lowest voltage drop and temperature rise in the protection circuit module.  During the second 
quarter of fiscal year of 2016, we introduced the industry's first single n-channel 45V MOSFET with an ultra-low on-resistance 
of 1.15Ohms at 10V.  This addition to our medium voltage product portfolio is designed to address a wide range of applications 
including secondary-side synchronous rectification in AC/DC and DC/DC converters, as well as industrial and motor drive 
applications.  We also released AOC3864, a common-drain 20V dual n-channel MOSFET with an ultra-low on-resistance of 
5.7mOhms at 4.5V.  This new device offers the best approach in designing battery protection circuit modules, while providing a 
strong and reliable solution.  In addition, we introduced the new generation of high efficiency PairFETs.  The AOE6930 is an 
asymmetric package with integrated high-side and low-side MOSFETs.  The product is designed with our latest silicon 
technology to optimize the conducting resistance and the switching characteristics of both MOSFETs in order to attain the 
highest efficiency over the whole output range when working as the power stage for a Vcore power supply circuit.  The 
combination of AOS's XSFET™ technology in this new generation PairFET package, gives the device an extra advantage in 
thermal dissipation.  Moreover, we released the AOZ3101, a high efficiency, simple-to-use synchronous buck regulator, with an 
operating input voltage range from 4.5V to 18V, supplying 2A of continuous current.  The device offers a low on-resistant 
power stage in a thermally enhanced 3mm x 3mm DFN package, allowing cooler power conversion for a variety of consumer 
electronics application such as LCD TVs, set-top boxes, as well as DVD players and recorders.  During the first quarter of 
fiscal year of 2016, we released AO4294, the latest addition to our family of high efficiency charging solutions.  This new 
device is offered in an easy-to-use SO-8 package, which helps manufacturers keep the mounting cost low, while still getting the 
best efficiency and power dissipation possible.  The AO4294 is an ideal solution for synchronours rectification in high 
efficiency chargers and adapters for mobile devices.  We also released AOZ3053, a 5A EZBuck DC/DC regulator with smart 
mode adaption functions, available in a thermally enhanced exposed pad SO-8 package.  The AOZ3053 is the first of this new 
smart platform, which allows for more thermally efficient DC/DC solutions for consumer, networking and industrial 
applications such as LCD TVs, set-top boxes, cable modems, and power supplies.

Distributors and customers  

We have developed direct relationships with key OEMs, including Dell Inc., Hewlett-Packard Company, LG Electronics, 

Inc. and Samsung Group, most of which we serve through our distributors and ODMs.  We sell to Samsung Group directly 
which accounted for 12.3%, 11.7% and 11.6% of our revenue for the fiscal years ended June 30, 2016, 2015 and 2014, 
respectively.  In addition, based on our historical design win activities, our power semiconductors are also incorporated into 
products sold to certain OEMs. 

Through our distributors, we provide products to ODMs who traditionally are contract manufacturers for OEMs.  As the 

industry has evolved, ODMs are increasingly responsible for designing portions, or entire systems, of the products they 
manufacture for the OEMs.  In addition, several ODMs are beginning to design, manufacture and brand their own proprietary 
products, which they sell directly to consumers.  Our ODM customers include Compal Electronics, Inc., Foxconn, Quanta 
Computer Incorporated, Pegatron,Wistron Corporation and AOC International.  

In order to take advantage of the expertise of end-customer fulfillment logistics and shorter payment cycles, we sell most 
of our products to distributors.  In general, under the agreements with our distributors, they have limited rights to return unsold 
merchandise, subject to time and volume limitations. As of June 30, 2016 and 2015, our two largest distributors were WPG 
Holdings Limited, or WPG, and Promate Electronic Co. Ltd., or Promate, respectively.  Sales to WPG and Promate accounted 
for 37.2% and 23.8% of our revenue, respectively, for the fiscal year ended June 30, 2016, 36.1% and 25.4% of our revenue, 
respectively, for the fiscal year ended June 30, 2015, and 43.1% and 21.6% of our revenue, respectively, for fiscal year ended 
June 30, 2014, respectively.

Sales and marketing 

Our marketing division is responsible for identifying high growth markets and applications where we believe our 

technology can be effectively deployed.  We believe that the technical background of our marketing team, including application 
engineers, helps us better define new products and identify potential end customers and geographic and product market 
opportunities.  For example, as part of our market diversification strategy, we have deployed and plan to recruit more for our 
new market segments, field application engineers, or FAEs, who provide real-time and on-the-ground responses to our end 
customer needs, work with our end customers to understand their requirements, resolve technical problems, strive to anticipate 
future customer needs and facilitate the design-in of our products into the end products of our customers.  We believe this 
strategy increases our share of revenue opportunities within the applications we currently serve, as well as in new end-market 
applications.

6

Our sales team consisted of sales persons, field application engineers, customer service representatives and customer 
quality engineers who are responsible for key accounts.  We strategically position our team near our end customers through our 
offices in Taipei, Hong Kong, Shenzhen, Shanghai, Tokyo, Seoul and Sunnyvale, California, complemented by our applications 
centers in Sunnyvale and Shanghai.  In addition, our distributors and sales representatives assist us in our sales and marketing 
efforts by identifying potential customers, sourcing additional demand and promoting our products, in which case we may pay a 
sales commission to these distributors.

Our sales cycle varies depending on the types of products and can range from six to eighteen months.  In general, our 

traditional power discrete products in the PC and TV applications are moving more rapidly through the design and marketing 
processes, therefore they generally have shorter sales cycle.  In contrast, our newer Power IC and IGBT products, mostly in the 
power supply, home appliance and industrial applications, require a more extended design and marketing timeline and thus 
have longer sales cycle.  Typically, our sales cycle for all products comprises of the following steps:

• 

• 

• 

• 

identification of a customer design opportunity;

qualification of the design opportunity by our FAEs through comparison of the power requirements against our 
product portfolio;

provision of a product sample to the end customer to be included in the customer's pre-production model with the goal 
of being included in the final bill of materials; and

placement by the customer, or through its distributor, of a full production order as the end customer increases to full 
volume production.

Competition 

The power semiconductor industry is characterized by fragmentation with many competitors.  We compete with different 

power semiconductor suppliers, depending on the type of product lines and geographical area.  Our key competitors in power 
discretes and power ICs are primarily headquartered in the United States, Japan, Europe and Taiwan.  Our major competitors in 
power discretes include Fairchild Semiconductor International, Inc., Infineon Technologies AG, MagnaChip Semiconductor 
Corporation, ON Semiconductor Corp., STMicroelectronics N.V., Toshiba Corporation, Diodes Incorporated and Vishay 
Intertechnology, Inc.  Our major competitors for our power ICs include Global Mixed-mode Technology Inc., Monolithic 
Power Systems, Inc., Richtek Technology Corp., Semtech Corporation and Texas Instruments Inc.

Our ability to compete depends on a number of factors, including:

• 

• 

• 

• 

• 

• 

• 

our success in expanding and diversifying our serviceable markets, and our ability to develop technologies and product 
solutions for these markets;

our capability in quickly developing and introducing proprietary technology and best in class products;

the performance and cost-effectiveness of our products relative to that of our competitors;

our ability to manufacture, package and deliver products in large volume on a timely basis at a competitive price;

our success in utilizing new and proprietary technologies to offer products and features previously not available in the 
marketplace;

our ability to recruit and retain analog semiconductor designers and application engineers; and

our ability to protect our intellectual property.

Some of our competitors have longer operating histories, more brand recognition, and significantly greater financial, 

technical, research and development, sales and marketing, manufacturing and other resources.  However, we believe that we 
can compete effectively through our integrated and innovative technology platform and design capabilities, including our multi-
chip approach to power IC products, strategic global business model, expanding portfolio of products, diversified and broad 
customer base, and excellent on-the-ground support and quick time to market for our products.

 Seasonality 

As we provide power semiconductors used in consumer electronic products, our business is subject to seasonality.  Our 

sales seasonality is affected by a number of factors, including global and regional economic conditions as well as the PC market 

7

conditions, revenue generated from new products, changes in distributor ordering patterns in response to channel inventory 
adjustments and end customer demand for our products and fluctuations in consumer purchase patterns prior to major holiday 
seasons.  In recent periods, broad fluctuations in the semiconductor markets and the global and regional economic conditions, 
in particular the decline of the PC market conditions, have had a more significant impact on our results of operations than 
seasonality, and have made it difficult to assess the impact of seasonal factors on our business.

Backlog  

Our sales are made primarily pursuant to standard purchase orders from distributors and direct customers.  The amount of 

backlog to be shipped during any period depends on various factors, and all orders are subject to cancellation or modification, 
usually with no penalty to customers.  The quantities actually purchased by customers, as well as shipment schedules, are 
frequently revised to reflect changes in both the customers' requirements and in manufacturing availability.  Therefore, our 
backlog at any point in time is not a reliable indicator of our future revenue. 

Research and development 

Because we view technology as a competitive advantage, we invest significant time and capital into research and 
development to address the technology intensive needs of our end customers.  Our research and development expenditures for 
the fiscal years of 2016, 2015 and 2014 were $26.0 million, $27.1 million and $24.4 million, respectively.  Our research and 
development expenditures primarily consist of staff compensation, prototypes, engineering materials, simulation and design 
tools and test and analyzer equipment.  Our new product development efforts continue to focus on developing products with 
higher speed, higher efficiency and reliability, higher power density, greater performance and lower costs.  We have research 
and development teams in Silicon Valley (Sunnyvale, California), Oregon, Taipei, Taiwan, and Shanghai, China.  We believe 
that these diverse research and development teams enable us to develop leading edge technology platforms and new products.  
Our areas of research and development focus include:

Packaging technologies: Consumer demand for smaller and more compact electronic devices with higher power density is 

driving the need for advanced packaging technology.  Our group of dedicated packaging engineers focuses on smaller form 
factor, higher power output with efficient heat dissipation and cost-effectiveness.  We have invested significant resources to 
develop and enhance our proprietary packaging technologies, including the establishment of our in-house packaging and testing 
facilities.  We believe that our efforts to develop innovative packaging technologies will continue to provide new and cost-
effective solutions with higher power density to our customers.  During the fiscal year ended June 30, 2016, we continued our 
diversification program by developing new silicon and packaging platforms to expand our SAM and offer higher performance  
products.

Process technology and device physics: We focus on specialized process technology in the manufacturing of our products, 

including vertical DMOS, Shielded Gate Trench, Trench field stop IGBTs, charge-balance high voltage MOSFETs, Schottky 
Diode and BCDMOS processes. Our process engineers work closely with our design team to deploy and implement our 
proprietary manufacturing processes at our Oregon fab as well as the third-party foundries that fabricate our wafers.  To 
improve our process technology, we continue to develop and enhance our expertise in device physics in order to better 
understand the physical characteristics of materials and the interactions among these materials during the manufacturing 
process.

New products and new technology platforms: We also invest significantly in the development of new technology 

platforms and introduction of new products.  Because power management affects all electronic systems, we believe that 
developing a wide portfolio of products enables us to target new applications in addition to expanding our share of power 
management needs served within existing applications. 

 As a technology company, we will continue our significant investment in research and development in our low voltage 

and high voltage power discretes and power ICs by developing new technology platforms and new products that allow for 
better product performance, more efficient packages and higher levels of integration.

Operations 

The manufacture of our products is divided into two major steps: wafer fabrication and packaging and testing. 

Wafer fabrication

Our Oregon fab allows us to accelerate the development of our technology and products, as well as to provide better 
services to our customers.  We allocate our wafer production between our in-house facility and third-party foundries, although 

8

 
in the past three years, we have gradually reduced our reliance on third-party foundries following the acquisition and 
integration of the Oregon fab.  Currently our main third-party foundry is Shanghai Hua Hong Grace Electronic Company 
Limited, ("HHGrace"), or formerly HHNEC, located in Shanghai.  HHGrace has been manufacturing wafers for us since 2002.  
HHGrace manufactured 25.0%, 25.0% and 28.6% of the wafers used in our products for the fiscal years ended June 30, 2016, 
2015 and 2014, respectively. 

On March 29, 2016, we entered into the JV agreement with two investment funds affiliated with the municipalities of 

Chongqing for the purpose of constructing a power semiconductor packaging, testing and 12-inch wafer fabrication facility in 
the Liangjiang New Area of Chongqing.  We expect the JV Company  to commence its initial production in the first half of 
fiscal 2018.

Packaging and testing

Completed wafers from the foundries are sent to our in-house packaging and testing facilities or to our subcontractors, 
where the wafers are cut into individual die, soldered to lead frames, wired to terminals and then encapsulated in protective 
packaging.  After packaging, all devices are tested in accordance with our specifications and substandard or defective devices 
are rejected.  We have established quality assurance procedures that are intended to control quality throughout the 
manufacturing process, including qualifying new parts for production at each packaging facility, conducting root cause 
analysis, testing for lots with process defects and implementing containment and preventive actions.  The final tested products 
are then shipped to our distributors or customers.

Our in-house packaging and testing facilities are located in Shanghai, China which handle most of our packaging and 

testing requirements for our products, and within one year from June 30, 2016, we are expected to contribute a portion of the 
packaging equipments currently being used in Shanghai facility to the JV Company.  We continuously increase outsourcing 
portion of our packaging and testing requirements to other contract manufacturers to minimize the effect of market fluctuation.  
Our facilities have the combined capacity to package and test over 500 million parts per month and have available floor space 
for new package introductions.  We believe our ability to package and test our products internally represents a strategic 
advantage as it protects our proprietary packaging technology, increases the rate of new package introductions, reduces 
operating expenses and ultimately improves our profit margins.

Quality assurance 

Our quality assurance practices aim to consistently provide our end customers with products that are reliable, durable and 

free of defects.  We strive to do so through continuous improvement in our product design and manufacturing and close 
collaboration with our manufacturing partners.  Our manufacturing operations in China and our manufacturing facility in 
Oregon are certified to the ISO9001 and ISO/TS16949:2009.  These Quality Management System certifications are in 
recognition of our quality assurance standards.  Both ISO9001and ISO/TS16949:2009 are sets of criteria and procedures 
established by International Organization of Standardization for developing a fundamental quality management system and 
focusing on continuous improvement, defect prevention and the reduction of variation and waste.  Our products are also in 
compliance with Restrictions on the use of Hazardous Substances, or RoHS 2.0.

We maintain a supplier management and process engineering team in Shanghai that works with our third-party foundries 

and packaging and testing subcontractors to monitor the quality of our products, which is designed to ensure that manufacturing 
of our products, is in strict compliance with our process control, monitoring procedures and product requirements.  We also 
conduct periodic reviews and annual audits to ensure supplier performance.  For example, we examine the results of statistical 
process control systems, implement preventive maintenance, verify the status of quality improvement projects and review 
delivery time metrics.  In addition, we rate and rank each of our suppliers every quarter based on factors such as their quality 
and performance.  Our facility in Oregon integrates manufacturing process controls through our manufacturing execution 
system coupled with wafer process controls that include monitoring procedures, preventative maintenance, statistical process 
control, and testing to ensure that finished wafers delivered will meet and exceed quality and reliability requirements.  All 
materials used to manufacture wafers are controlled through a strict qualification process.

Our manufacturing processes use many raw materials, including silicon wafers, gold, copper, molding compound, 
petroleum and plastic materials and various chemicals and gases.  We obtain our raw materials and supplies from a large 
number of sources.  Although supplies for the raw materials used by us are currently adequate, shortages could occur in various 
essential materials due to interruption of supply or increased demand in the industry.

Intellectual property rights  

9

Intellectual property is a critical component of our business strategy, and we intend to continue to invest in the growth, 

maintenance and protection of our intellectual property portfolio.  We own significant intellectual property in many aspects of 
power semiconductor technology, including device physics and structure, wafer processes, circuit designs, packaging, modules 
and subassemblies.  We have also entered into intellectual property licensing agreements with other companies, including 
Fairchild Semiconductor International, Inc. and Giant Semiconductor Corporation, to use selected third-party technology for 
the development of our products, although we do not believe our business is dependent to any significant degree on any 
individual third-party license agreement.

While we focus our patent efforts in the United States, we file corresponding foreign patent applications in other 

jurisdictions, such as China and Taiwan, when filing is justified by cost and strategic importance.  The patents are increasingly 
important to remain competitive in our industry, and a strong patent portfolio will facilitate the entry of our products into new 
markets.  As of June 30, 2016, we had 601 patents issued in the United States, of which 29 were acquired, 2 were licensed and 
570 were based on our research and development efforts, and these patents are set to expire between 2016 and 2035.  Within 
these patents, 6 patents will be expired in 2016, which we do not expect to have a material impact on our patent position.  We 
also had a total of 611 foreign patents, including 283 Chinese patents, 307 Taiwanese patents, 13 Korean patents, 4 Hong Kong 
patents and 4 Japanese patents as of June 30, 2016.  Substantially all of our foreign patents were based on our research and 
development efforts.  These foreign patents expire in the years between 2018 and 2035.  In addition, as of June 30, 2016, we 
had a total of 359 patent applications, of which 150 patents were pending in the United States, 125 patents were pending in 
China, 79 patents were pending in Taiwan and 4 patents were pending in other countries.

As our technologies are deployed in new applications and as we diversify our product portfolio based on new technology 

platforms, we may be subject to new potential infringement claims.  Patent litigation, if and when instituted against us, could 
result in substantial costs and a diversion of our management's attention and resources.  However, we are committed to 
vigorously defending and protecting our investment in our intellectual property.  Therefore, the strength of our intellectual 
property program, including the breadth and depth of our portfolio, will be critical to our success in the new markets we intend 
to pursue.

In addition to patent protection, we also rely on a combination of trademark, copyright (including mask work protection), 
trade secret laws, contractual provisions and similar laws in other jurisdictions.  We also enter into confidentiality and invention 
assignment agreements with our employees, consultants, suppliers, distributors and customers and seek to control access to, and 
distribution of, our proprietary information.

Environmental matters 

The semiconductor production process, including the semiconductor wafer manufacturing and packaging process, 
generates air emissions, liquid wastes, waste water and other industrial wastes.  We have installed various types of pollution 
control equipment for the treatment of air emissions and liquid waste and equipment for recycling and treatment of water in our 
packaging and testing facilities in China and wafer manufacturing facility in Oregon, USA.  Waste generated at our 
manufacturing facilities, including but not limited to acid waste, alkaline waste, flammable waste, toxic waste, oxide waste and 
self-igniting waste, is collected and sorted for proper disposal.  Our operations in China are subject to regulation and periodic 
monitoring by China's State Environmental Protection Bureau, as well as local environmental protection authorities, including 
those under the Shanghai Municipal Government, which may in some cases establish stricter standards than those imposed by 
the State Environmental Protection Bureau.  Our operation in Oregon is subject to Oregon Department of Environmental 
Regulations, Federal Environmental Protection Agency laws and regulations, and local jurisdictional regulations.  We believe 
that we have been in material compliance with applicable environmental regulations and standards and have not had a material 
or adverse effect on our results of operations from complying with these regulations.

We have implemented an ISO 14001 environmental management system in our manufacturing facilities in China and 

Oregon.  We also require our subcontractors, including foundries and assembly houses, to meet ISO14001 standards.  We 
believe that we have adopted pollution control measures for the effective maintenance of environmental protection standards 
consistent with the requirements applicable to the semiconductor industry in China and the U.S..

Our products sold in Europe are subject to RoHS in Electrical and Electronic Equipment, which requires that the products 

do not contain more than agreed levels of lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyl and 
polybrominated diphenyl ether flame retardants.  Our manufacturing facilities in China also obtained QC080000 certification, 
which is an IECQ Certificate of Conformity Hazardous Substance Process Management for European Directive 2002/95/EC 
requirements and a Certificate of Green Partner for Sony Green Partner Program.  We avoid using these restricted materials to 
the extent possible when we design our products.

10

We are also subject to SEC rules that require diligence, disclosure and reporting on whether certain minerals and metals, 

known as conflict minerals, used in our products originate from the Democratic Republic of Congo and adjoining countries.  As 
of June 30, 2016, 2015 and 2014, we were in compliance with the related conflict minerals rule.

Employees 

As of June 30, 2016, we had approximately 2,800 employees, of which approximately 380 were located in the United 

States, 2,310 were located in China, and 110 were located in other parts of Asia.  Of the total employees, approximately 2,380 
were in operations and manufacturing, 150 were in research and development, 150 were in sales and marketing and 120 were in 
general and administrative.  None of our employees are represented by a collective bargaining agreement.  We consider our 
relationships with our employees to be good. 

Executive Officers  

The following table lists the names, ages and positions of our executive officers as of July 31, 2016. There are no family 

relationships between any executive officer. 

Name

Age  

Position 

Mike F. Chang, Ph.D.

71 Chairman of the Board and Chief Executive Officer

Yueh-Se Ho, Ph.D.
Yifan Liang

64 Director and Chief Operating Officer
52 Chief Financial Officer and Corporate Secretary

Daniel Kuang Ming Chang

61

Senior Vice President of Marketing

Mike F. Chang, Ph.D., is the founder of our company and has served as our Chairman of the Board and Chief Executive 

Officer since the incorporation of our company.  Dr. Chang has extensive experience in both technology development and 
business operations in the power semiconductor industry.  Prior to establishing our company, Dr. Chang served as the Executive 
Vice President at Siliconix Incorporated, a subsidiary of Vishay Intertechnology Inc., a global manufacturer and supplier of 
discrete and other power semiconductors, or Siliconix, from 1998 to 2000.  Dr. Chang also held various management positions 
at Siliconix from 1987 to 1998.  Earlier in his career, Dr. Chang focused on product research and development in various 
management positions at General Electric Company from 1974 to 1987.  Dr. Chang received his B.S. in electrical engineering 
from National Cheng Kung University, Taiwan, and M.S. and Ph.D. in electrical engineering from the University of Missouri.

Yueh-Se Ho, Ph.D., is a co-founder of our company and has served as our Chief Operating Officer since January 2006 

and our director since March 2006.  Dr. Ho has held various operational management positions in our company since our 
inception, including the Vice President of Worldwide Operations from 2003 to 2006 and the Vice President of Back End 
Operations from 2000 to 2003.  Prior to co-founding our company, Dr. Ho served as the Director of Packaging Development 
and Foundry Transfer at Siliconix from 1998 to 2000.  Dr. Ho received his B.S. in chemistry from Tamkang University, Taiwan, 
and Ph.D. in chemistry from the University of Pittsburgh.

Yifan Liang is currently serving as our Chief Financial Officer since August 2014 and Corporate Secretary since 
November 2013.  Mr. Liang served as our Interim Chief Financial Officer from November 2013 to August 2014, our Chief 
Accounting Officer since October 2006, and our Assistant Corporate Secretary from November 2009 to November 2013.  
Mr. Liang joined our company in August 2004 as our Corporate Controller.  Prior to joining us, Mr. Liang held various 
positions at PricewaterhouseCoopers LLP, or PwC, from 1995 to 2004, including Audit Manager in PwC's San Jose office.  
Mr. Liang received his B.S. in management information system from the People's University of China and M.A. in finance and 
accounting from the University of Alabama.

Daniel Kuang Ming Chang has been serving as our Senior Vice President of Marketing since August 3, 2015.  Mr. 
Chang served as our Vice President of Power IC Product Line and Applications Engineering from October 2011 to August 2, 
2015, our Vice President of Strategic Marketing and Applications Engineering from May 2010 to October 2011, and our 
Director of Strategic Marketing and Applications Engineering from February 2009 to April 2010.  Prior to joining our company, 
Mr. Chang served as Vice President of new product line at Richtek Inc, a power management company in Taiwan, from 2005 to 
2009.  He also served as Vice President of System Engineering at Lovoltech Inc, a startup semiconductor company in 
Sunnyvale, California from 2001 to 2005.  Mr. Chang received his M.S. in physics from National Tsing Hua University of 
Taiwan, and a B.S. in electrical engineering from Taiwan National University.

Available Information

11

 
Our filing documents and information with the Securities and Exchange Commission (the "SEC") are available free of 
charge electronically through our Internet website, www.aosmd.com. as soon as reasonably practicable after we electronically 
file such material with, or furnish it to, the SEC.  Additionally, these filings may be obtained by visiting the Public Reference 
Room of the SEC at 100 F Street, NE, Washington, DC 20549 or by calling the SEC at 1-800-SEC-0330, by sending an 
electronic message to the SEC at publicinfo@sec.gov.  In addition, the SEC maintains a website (www.sec.gov) that contains 
reports, proxy statements, and other information that we file electronically. 

12

Item 1A. 

Risk Factors 

Risks Related to Our Business

The decline of personal computing (“PC”) markets may have a material adverse effect on our results of operations.

A significant amount of our revenue is derived from sales of products in the PC markets such as notebooks, 

motherboards and notebook battery packs.  Our revenue from the PC markets accounted for approximately 38.5%, 47.1% and 
45.2% of our total revenue for the years ended 2016, 2015 and 2014, respectively. The increasing popularity of smaller, mobile 
computing devices such as tablets and smartphones with touch interfaces is rapidly changing the PC markets both in the 
United States and abroad.  We experienced a significant reduction in the demand for our products due to the declining PC 
markets, which have negatively impacted our revenue, profitability and gross margin.  The decline of the PC markets also 
adversely affected our ability to adjust inventory levels in response to the lower shipments, which have negatively impacted 
our gross margins.  Moreover, the continuing decline of the PC markets may reduce the capacity utilization of our 
manufacturing facilities or impair the value of our long-lived assets, including equipment and machinery used for the 
manufacturing and packaging of our products, which could have a material adverse effect on our results of operations.  

Our diversification into different market segments may not succeed according to our expectations and may expose us to 
new risks and place significant strains on our management, operational, financial and other resources.

As part of the growth strategy to diversify our product portfolio and in response to the rapid decline of the PC markets, 
we have been developing new technologies and products designed to penetrate into other markets and applications, including 
merchant power supplies, flat panel TVs, smart phones, tablets, gaming consoles, lighting, datacom, home appliances and 
industrial motor controls.  However, there is no guarantee that these diversification efforts will be successful.  As a new entrant 
to some of these markets, we may face intense competition from existing and more established providers and encounter other 
unexpected difficulties, any of which may hinder or delay our efforts to achieve success.  In addition, our new products may 
have long design and sales cycles, therefore if our diversification efforts fail to keep pace with the declining PC markets, we 
may not be able to alleviate its negative impact on our results of operations.

Our diversification into different market segments may place a significant strain on our management, operational, 
financial and other resources.  To manage this diversification effectively, we will need to take various actions, including:

• 

• 

enhancing management information systems, including forecasting procedures;

further developing our operating, administrative, financial and accounting systems and controls;

•  managing our working capital and sources of financing;

•  maintaining close coordination among our engineering, accounting, finance, marketing, sales and operations 

organizations;

retaining, training and managing our employee base;

enhancing human resource operations and improving employee hiring and training programs;

realigning our business structure to more effectively allocate and utilize our internal resources;

improving and sustaining our supply chain capability; and

• 

• 

• 

• 

•  managing both our direct and distribution sales channels in a cost-efficient and competitive manner.

Our failure to execute any of the above actions successfully or timely may have an adverse effect on our business and 

financial results.

Our operating results may fluctuate from period to period due to many factors, which may make it difficult to predict our 
future performance.

Our periodic operating results may fluctuate as a result of a number of factors, many of which are beyond our control. 

These factors include, among others:

• 

a deterioration in general demand for electronic products, particularly the Personal Computing (PC) market, as a 
result of global or regional financial crises and associated macro-economic slowdowns, and/or the cyclicality of the 
semiconductor industry;

13

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

a deterioration in business conditions at our distributors and /or end customers;

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

the emergence and growth of markets for products we are currently developing;

our ability to successfully develop, introduce and sell new or enhanced products in a timely manner and the rate at 
which our new products replace declining orders for our older products;

the anticipation, announcement or introduction of new or enhanced products by us or our competitors;

the amount and timing of operating costs and capital expenditures, including expenses related to the maintenance and 
expansion of our business operations and infrastructure; 

the announcement of significant acquisitions, disposition or partnership arrangements and changes in our joint 
venture project in China;

changes in the utilization of our in-house manufacturing capacity;

supply and demand dynamics and the resulting price pressure on the products we sell;

the unpredictable volume and timing of orders, deferrals, cancellations and reductions for our products, which may 
depend on factors such as our end customers' sales outlook, purchasing patterns and inventory adjustments based on 
general economic conditions or other factors;

changes in the selling prices of our products and in the relative mix in the unit shipments of our products, which have 
different average selling prices and profit margins;

changes in costs associated with manufacturing of our products, including pricing of wafer, raw materials and 
assembly services;

announcement of significant share repurchase programs;

our concentration of sales in consumer applications and changes in consumer purchasing patterns and confidence; and

the adoption of new industry standards or changes in our regulatory environment;

Any one or a combination of the above factors and other risk factors described in this section may cause our operating 

results to fluctuate from period to period, making it difficult to predict our future performance.  Therefore, comparing our 
operating results on a period-to-period basis may not be meaningful, and you should not rely on our past results as an 
indication of our future performance.

Our revenue may fluctuate significantly from period to period due to ordering patterns from our distributors and 
seasonality.

Demand for our products from our end customers fluctuates depending on their sales outlooks and market and economic 

conditions.  Accordingly, our distributors place purchase orders with us based on their forecasts of end customer demand.  
Because these forecasts may not be accurate, channel inventory held at our distributors may fluctuate significantly due to the 
difference between the forecasts and actual demand.  As a result, distributors adjust their purchase orders placed with us in 
response to changing channel inventory levels, as well as their assessment of the latest market demand trends.  A significant 
decrease in our distributors' channel inventory in one period may lead to a significant rebuilding of channel inventory in 
subsequent periods, or vice versa, which may cause our quarterly revenue and operating results to fluctuate significantly.

In addition, because our power semiconductors are used in consumer electronics products, our revenue is subject to 

seasonality.  Our sales seasonality is affected by a number of factors, including global and regional economic conditions as 
well as the PC market conditions, revenue generated from new products, changes in distributor ordering patterns in response to 
channel inventory adjustments and end customer demand for our products and fluctuations in consumer purchase patterns 
prior to major holiday seasons.  In recent year, broad fluctuations in the semiconductor markets and the global economic 
conditions, in particular the decline of the PC market conditions, have had a more significant impact on our results of 
operations, than seasonality, and have made it difficult to assess the impact of seasonal factors on our business.

If we are unable to introduce or develop new and enhanced products that meet or are compatible with our customer's 
product requirements in a timely manner, it may harm our business, financial position and operating results.

Our success depends upon our ability to develop and introduce new and enhanced products that meet or are compatible 

with our customer's specifications, performance standards and other product requirements in a timely manner.  The 
development of new and enhanced products involves highly complex processes, and at times we have experienced delays in 
the introduction of new products.  Successful product development and introduction of new products depends on a number of 

14

factors, including the accurate product specification; timely completion of design; achievement of manufacturing yields; 
timely response to changes in customers' product requirements; quality and cost-effective production; and effective marketing.   
Since many of our products are designed for specific applications, we must frequently develop new and enhanced products 
jointly with our customers.  In the past, we have encountered product compatibility issues with a major OEM that has 
negatively impacted our financial results, and although we have resolved fully such issues with the OEM, there is no guarantee 
that the same compatibility issues will not occur in the future with other OEMS.  If we are unable to develop or acquire new 
products that meet or are compatible with our customer's specification and other product requirements in a timely manner, we 
may lose revenue or market shares with our customers, which could have a material adverse effect on our business, financial 
position and operating results.

We may not win sufficient designs, or our design wins may not generate sufficient revenue for us to maintain or expand 
our business.

We invest significant resources to compete with other power semiconductor companies to obtain winning competitive 

bids for our products in selection processes, known as “design wins.”  Our effort to obtain design wins may detract us from or  
delay the completion of other important development projects, impair our relationships with existing end customers and 
negatively impact sales of products under development.  In addition, we cannot be assured that these efforts would result in a 
design win, that our product would be incorporated into an end customer's initial product design, or that any such design win 
would lead to production orders and generate sufficient revenue.  Furthermore, even after we have qualified our products with 
a customer and made sales, subsequent changes to our products, manufacturing processes or suppliers may require a new 
qualification process, which may result in delay and excess inventory.  If we cannot achieve sufficient design wins in the 
future, or if we fail to generate production orders following design wins, our ability to grow our business and improve our 
financial results will be harmed.

We may not be able to fully realize the anticipated benefits and advantages from our joint venture with the Chongqing 
government.

In March 2016, we entered into a joint venture contract (the “JV Agreement”) with two investment funds owned by the 
municipalities of Chongqing, China (the “Chongqing Funds”), pursuant to which we and the Chongqing Funds formd a joint 
venture (the “JV Company”) for the purpose of constructing a power semiconductor packaging/testing and wafer fabrication 
facility. The total initial capitalization of the JV Company is $330.0 million (the “Initial Capitalization”), which consists of (i) 
a total of $ 162.0 million of cash contribution from the Chongqing Funds; (ii) $74.0 million of existing packaging and testing 
equipment owned by us located in Shanghai, China; (iii) certain intellectual property rights, including patents, held by us 
relating to the manufacturing technology valued at $84.0 million; and (iv) $10.0 million of cash contribution by us.  We own 
51%, and the Chongqing Funds owns 49%, of the equity interest in the JV Company.  The Initial Capitalization will be 
completed in stages and we expect the JV Company to commence its initial production in the first half of fiscal 2018.

We may encounter unanticipated difficulties and obstacles that may delay or prevent the commencement of the JV 
Company's operation, some of which are outside of our control. These difficulties may include unexpected costs in transferring 
our assembly and testing operations to the new facility; inability to coordinate and integrate the labor forces; delays in 
obtaining the necessary Chinese government approval to establish the joint venture; failure of the Chongqing Funds to meet 
their obligations under the JV Agreement; and inability to provide customers with required services.  In addition, we may not 
be able to fully utilize our packaging and testing capacity during the period when our facilities are being transferred from 
Shanghai to Chongqing, which may negatively impact our business and results of operations.

 Even if the joint venture is able to commence operation, we may not fully realize the anticipated benefits of the project, 

such as cost savings, improvement in working capital, increased gross margin, revenue and profitability, enhanced market 
share for our products; and increased diversification of our products and customers.  The establishment and operation of a new 
manufacturing facility involve significant risks and challenges, including, but are not limited to, the following:

• 

Inability to gain or sustain sufficient new customers and market shares to offset the additional costs of building and 
operating a new facility;

•  Lack of sufficient control over the operation and finances of the joint venture;

• 

• 

Insufficient personnel with requisite expertise and experiences to operate a 12-in fabrication facility;

Inability to fully integrate the joint venture with our existing fabrication facility in Oregon, and inability to fully 
utilize both fabrication facilities;

15

• 

Failure of Chongqing Funds to meet its obligations under the JV Agreement;

•  Difficulties in protecting and enforcing our intellectual property rights;

•  Difficulties in maintaining international communications and coordination between our locations in the U.S. and 

China;  

• 

Inability to take advantage of the expected tax savings; 

•  Changes or uncertainties in economic, legal, regulatory, social and political conditions in China, and lack of 

transparency and certainty in the Chinese regulatory process; 

•  Labor disputes and difficulties in recruiting new employees; and 

•  Additional costs and complexity with compliance of local and state regulations of Chongqing.  

Any of the foregoing risks could materially reduce the expected return of our investment in the joint venture and 

adversely affects our business operations, financial performance and the trading price of our shares.

Our success depends upon the ability of our OEM end customers to successfully sell products incorporating our products.

The consumer end markets, in particular the PC market, in which our products are used are highly competitive. Our 

OEM end customers may not successfully sell their products for a variety of reasons, including:

• 

• 

• 

• 

• 

• 

• 

general global and regional economic conditions;

late introduction or lack of market acceptance of their products;

lack of competitive pricing;

shortage of component supplies;

excess inventory in the sales channels into which our end customers sell their products;

changes in the supply chain; and

changes as a result of regulatory restrictions applicable to China-exported products.

 Our success depends on the ability of our OEM end customers to sell their products incorporating our products.  In 
addition, we have expanded our business model to include more OEMs in our direct customer base.  The failure of our OEM 
end customers to achieve or maintain commercial success for any reason could harm our business, results of operations, and 
financial condition and prospects.

The operation of our Oregon fab may subject us to additional risks and the need for additional capital expenditures which 
may negatively impact our results of operations. 

The operation of the Oregon fab requires significant fixed manufacturing cost.  In order to manage the capacity of the 
wafer fabrication facility efficiently, we must perform a forecast of long-term market demand and general economic conditions 
for our products.  Because market conditions may vary significantly and unexpectedly, our forecast may change significantly 
at any time, and we may not be able to make timely adjustments to our fabrication capacity in response to these changes.  
During periods of continued decline in market demand, in particular the decline of the PC market, we may not be able to 
absorb the excess inventory and additional costs associated with operating the facility at higher capacity, which may adversely 
affect our operating results.  Similarly, during periods of unexpected increase in customer demand, we may not be able to ramp 
up production quickly to meet these demands, which may lead to the loss of significant revenue opportunities.  The 
manufacturing processes of a fabrication facility are complex and subject to interruptions.  We may experience production 
difficulties, including lower manufacturing yields or products that do not meet our or our customers' specifications, and 
problems in ramping production and installing new equipment.  These difficulties could result in delivery delays, quality 
problems and lost revenue opportunities.  Any significant quality problems could also damage our reputation with our 
customers and distract us from the development of new and enhanced product which may have a significant negative impact 
on our financial results.

In addition, semiconductor manufacturing has historically required an upgrading of process technology from time to time 
to remain competitive, as new and enhanced semiconductor processes are developed which permit smaller, more efficient and 
more powerful semiconductor devices.  Accordingly, we may have to make substantial capital expenditures and install 
significant production capacity at our in-house fabrication facility to support new technologies and increased production 
volume, which may cause delay in our ability to deliver new products or negatively impact our results of operations.

16

 
 
Defects and poor performance in our products could result in loss of customers, decreased revenue, unexpected expenses 
and loss of market share, and we may face warranty and product liability claims arising from defective products.

Our products are complex and must meet stringent quality requirements.  Products as complex as ours may contain 
undetected errors or defects, especially when first introduced or when new versions are released.  Errors, defects or poor 
performance can arise due to design flaws, defects in raw materials or components or manufacturing anomalies, which can 
affect both the quality and the yield of the product.  It can also be potentially dangerous as defective power components, or 
improper use of our products by customers, may lead to power overloads, which could result in explosion or fire.  As our 
products become more complex, we face higher risk of undetected defects, because our testing protocols may not be able to 
fully test the products under all possible operating conditions.  In the past, we have experienced defects in our products and 
these products were returned to us and subsequently scrapped or sold at a discount.  Any actual or perceived errors, defects or 
poor performance in our products could result in the replacement or recall of our products, shipment delays, rejection of our 
products, damage to our reputation, lost revenue, diversion of our engineering personnel from our product development efforts 
in order to address or remedy any defects and increases in customer service and support costs, all of which could have a 
material adverse effect on our business and operations.

Furthermore, as our products are typically sold at prices much lower than the cost of the equipment or other devices 

incorporating our products, any defective, inefficient or poorly performing products, or improper use by customers of power 
components, may give rise to warranty and product liability claims against us that exceed any revenue or profit we receive 
from the affected products.  Historically, we have received claims from our customers for charges such as their labor and other 
costs replacing defective parts, their lost profit, and/or penalty.  We could incur significant costs and liabilities if we are sued 
and if damages are awarded against us.  There is no guarantee that our insurance policies will be available or adequate to 
protect against such claims.  Costs or payments we may make in connection with warranty and product liability claims or 
product recalls may adversely affect our financial condition and results of operations.

If we do not forecast demand for our products accurately, we may experience product shortages, delays in product 
shipment, excess product inventory, or difficulties in planning expenses, which will adversely affect our business and 
financial condition.

We manufacture our products according to our estimates of customer demand.  This process requires us to make 

numerous forecasts and assumptions relating to the demand of our end customers, channel inventory, and general market 
conditions. Because we sell most of our products to distributors, who in turn sell to our end customers, we have limited 
visibility as to end customer demand.  Furthermore, we do not have long-term purchase commitments from our distributors or 
end customers, and our sales are generally made by purchase orders that may be cancelled, changed or deferred without notice 
to us or penalty.  As a result, it is difficult to forecast future customer demand to plan our operations.

The utilization of our manufacturing facilities and the provisions for inventory write-downs are important factors in our 

profitability.  If we overestimate demand for our products, or if purchase orders are canceled or shipments delayed, we may 
have excess inventory, which may result in adjustments to our production plans.  These adjustments to our productions may 
affect the utilization of our own wafer fabrication and packaging facilities.  If we cannot sell certain portion of the excess 
inventory, it will affect our provisions for inventory write-downs.  Our inventory write-down provisions are subject to 
adjustment based on events that may not be known at the time the provisions are made, and such adjustments could be 
material and impact our financial results negatively.   

If we underestimate demand, we may not have sufficient inventory to meet end-customer demand, and we may lose 
market share and damage relationships with our distributors and end customers and we may have to forego potential revenue 
opportunities.  Obtaining additional supply in the face of product shortages may be costly or impossible, particularly in the 
short term, which could prevent us from fulfilling orders in a timely manner or at all.

In addition, we plan our operating expenses, including research and development expenses, hiring needs and inventory 

investments, base in part on our estimates of customer demand and future revenue.  If customer demand or revenue for a 
particular period is lower than we expect, we may not be able to proportionately reduce our fixed operating expenses for that 
period, which would harm our operating results.

We face intense competition and may not be able to compete effectively which could reduce our revenue and market share.

The power semiconductor industry is highly competitive and fragmented.  If we do not compete successfully against 

current or potential competitors, our market share and revenue may decline.  Our main competitors are primarily 
headquartered in the United States, Japan, Taiwan and Europe.  Our major competitors for our power discretes include 
Fairchild Semiconductor International, Inc., Infineon Technologies AG, MagnaChip Semiconductor Corporation, ON 

17

Semiconductor Corp., STMicroelectronics N.V., Toshiba Corporation, Diodes Incorporated and Vishay Intertechnology, Inc.  
Our major competitors for our power ICs include Global Mixed-mode Technology Inc., Monolithic Power Systems, Inc., 
Richtek Technology Corp., Semtech Corporation and Texas Instruments Inc.

We expect to face competition in the future from our competitors, other manufacturers, designers of semiconductors and 

start-up semiconductor design companies.  Many of our competitors have competitive advantages over us, including:

• 

• 

• 

• 

significantly greater financial, technical, research and development, sales and marketing and other resources, enabling 
them to invest substantially more resources than us to respond to the adoption of new or emerging technologies or 
changes in customer requirements;

greater brand recognition and longer operating histories;

larger customer bases and longer, more established relationships with distributors or existing or potential end 
customers, which may provide them with greater reliability and information regarding future trends and requirements 
that may not be available to us;

the ability to provide greater incentives to end customers through rebates, and marketing development funds or 
similar programs;

•  more product lines, enabling them to bundle their products to offer a broader product portfolio or to integrate power 

management functionality into other products that we do not sell; and

• 

captive manufacturing facilities, providing them with guaranteed access to manufacturing facilities in times of global 
semiconductor shortages.

If we are unable to compete effectively for any of the foregoing or other reasons, our business, results of operations, and  

financial condition and prospects will be harmed.

We depend partly on third-party semiconductor foundries to manufacture our products and implement our fabrication 
processes, and any failure to maintain sufficient foundry capacity and control the cost of production could significantly 
delay our ability to ship our products, damage our relationships with customers, reduce our sales and increase expenses.

The allocation of our wafer production between in-house facility and third-party foundries may fluctuate from time to 

time.  We expect to continue to rely in part on third party foundries to meet our wafer requirements.  Although we use several 
independent foundries, our primary third-party foundry is HHGrace, which manufactured 25.0%, 25.0% and 28.6% of the 
wafers used in our products for the fiscal years ended June 30, 2016, 2015 and 2014, respectively.

We place our purchase orders with foundries based on sales forecasts for our products.  If any third-party foundry does 
not provide competitive pricing or is not able to meet our required capacity for any reason, we may not be able to obtain the 
required capacity to manufacture our products timely or efficiently.  If we cannot maintain sufficient capacity or control 
pricing with our existing third-party foundries, we may need to increase our own manufacturing capacity, and there is no 
assurance that we can ramp up the production of the Oregon fab timely to meet the increased demand.  If not, we may need to 
seek alternative foundries, which may not be available on commercially reasonable terms, or at all.  In addition, the process for 
qualifying a new foundry is time consuming, difficult and may not be successful, particularly if we cannot integrate our 
proprietary process technology with the process used by the new foundry.  Using a foundry with which we have no established 
relationship could expose us to potentially unfavorable pricing, unsatisfactory quality or insufficient capacity allocation. 

In addition, even though we have been transferring more new product developments to our Oregon fab, we still rely on 

third-party foundries significantly to effectively implement certain of our proprietary technology and processes and also 
require their cooperation in developing new fabrication processes.  Any failure to do so may impair our ability to introduce 
new products and on time delivery of wafers for our existing products.  In order to maintain our profit margins and to meet our 
customer demand, we need to achieve acceptable production yields and timely delivery of silicon wafers.  As is common in the 
semiconductor industry, we have experienced, and may experience from time to time, difficulties in achieving acceptable 
production yields and timely delivery from third-party foundry vendors.  Minute impurities in a silicon wafer can cause a 
substantial number of wafers to be rejected or cause numerous die on a wafer to be defective.  Low yields often occur during 
the production of new products, the migration of processes to smaller geometries or the installation and start up of new process 
technologies.

We face a number of other significant risks associated with outsourcing fabrication, including:

• 

limited control over delivery schedules, quality assurance and control and production costs;

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• 

• 

• 

• 

• 

• 

• 

discretion of foundries to reduce deliveries to us on short notice, allocate capacity to other customers that may be 
larger or have long-term customer or preferential arrangements with foundries that we use;

unavailability of, or potential delays in obtaining access to, key process technologies;

limited warranties on wafers or products supplied to us;

damage to equipment and facilities, power outages, equipment or materials shortages that could limit manufacturing 
yields and capacity at the foundries;

potential unauthorized disclosure or misappropriation of intellectual property, including use of our technology by the 
foundries to make products for our competitors;

financial difficulties and insolvency of foundries; and

acquisition of foundries by third parties.

 Any of the foregoing risks could delay shipment of our products, result in higher expenses and reduced revenue, damage 

our relationships with customers and otherwise adversely affect our business and operating results.

Our operation of two in-house packaging and testing facilities are subject to risks that could adversely affect our business 
and financial results. 

We have two in-house packaging and testing facilities located in Shanghai, China that handle most of our packaging and 

testing requirements.  The operation of high-volume packaging and testing facilities and implementation of our advanced 
packaging technology are complex and demand a high degree of precision and may require modification to improve yields and 
product performance.  We have committed substantial resources to ensure that our packaging and testing facilities operate 
efficiently and successfully, including the acquisition of equipment and raw materials, and training and management of a large 
number of technical personnel and employees.  Due to the fixed costs associated with operating our own packaging and testing 
facilities, if we are unable to utilize our in-house facilities at a desirable level of production, our gross margin and results of 
operations may be adversely affected.  For example, a significant decline in our market share or sales orders may negatively 
impact our factory utilization and reduce our ability to achieve profitability.

In addition, the operation of our packaging and testing facilities is subject to a number of risks, including the following:

• 

• 

• 

• 

• 

• 

unavailability of equipment, whether new or previously owned, at acceptable terms and prices;

facility equipment failure, power outages or other disruptions;

shortage of raw materials, including packaging substrates, copper, gold and molding compound;

failure to maintain quality assurance and remedy defects and impurities;

changes in the packaging requirements of customers; and

our limited experience in operating a high-volume packaging and testing facility.

 Any of the foregoing risks could adversely affect our capacity to package and test our products, which could delay 
shipment of our products, result in higher expenses, reduce revenue, damage our relationships with customers and otherwise 
adversely affect our business, results of operations, financial condition and prospects.

Our reliance on distributors to sell a substantial portion of our products subjects us to a number of risks.

We sell a substantial portion of our products to distributors, who in turn sell to our end customers.  Our distributors 

typically offer power semiconductor products from several different companies, including our direct competitors.  The 
distributors assume collection risk and provide logistical services to end customers, including stocking our products.  Two 
distributors, WPG and Promate, collectively accounted for 61.0%, 61.5% and 64.7% of our revenue for the fiscal years ended 
June 30, 2016, 2015 and 2014, respectively.  Our agreements with Promate and WPG were renewed in July 2016 and are 
automatically renewed for each one-year period continuously unless terminated earlier pursuant to the provisions in the 
agreements.  We believe that our success will continue to depend upon these distributors. Our reliance on distributors subjects 
us to a number of risks, including:

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•  write-downs in inventories associated with stock rotation rights and increases in provisions for price adjustments 

• 

• 

• 

• 

granted to certain distributors;

potential reduction or discontinuation of sales of our products by distributors;

failure to devote resources necessary to sell our products at the prices, in the volumes and within the time frames that 
we expect;

focusing their sales efforts on products of our competitors;

dependence upon the continued viability and financial resources of these distributors, some of which are small 
organizations with limited working capital and all of which depend on general economic conditions and conditions 
within the semiconductor industry;

• 

dependence on the timeliness and accuracy of shipment forecasts and resale reports from our distributors;

•  management of relationships with distributors, which can deteriorate as a result of conflicts with efforts to sell 

directly to our end customers; and

• 

termination of our agreements with distributors which are generally terminable by either party on short notice.

If any significant distributor becomes unable or unwilling to promote and sell our products, or if we are not able to renew 

our contracts with the distributors on acceptable terms, we may not be able to find a replacement distributor on reasonable 
terms or at all and our business could be harmed.

We have made and may continue to make strategic acquisitions of other companies, assets or businesses and these 
acquisitions introduce significant risks and uncertainties, including risks related to integrating the acquired assets or 
businesses, incurring additional debt, assuming contingent liabilities or diluting our existing shareholders. 

In order to position ourselves to take advantage of growth opportunities, we have made, and may continue to make, 

strategic acquisitions, mergers and alliances that involve significant risks and uncertainties.  Successful acquisitions and 
alliances in the semiconductor industry are difficult to accomplish because they require, among other things, efficient 
integration and aligning of product offerings and manufacturing operations and coordination of sales and marketing and 
research and development efforts.  The difficulties of integration and alignment may be increased by the necessity of 
coordinating geographically separated organizations, the complexity of the technologies being integrated and aligned and the 
necessity of integrating personnel with disparate business backgrounds and combining different corporate cultures.  

In addition, we may also issue equity securities to pay for future acquisitions or alliances, which could be dilutive to 

existing shareholders.  We may also incur debt or assume contingent liabilities in connection with acquisitions and alliances, 
which could impose restrictions on our business operations and harm our operating results.

If we are unable to obtain raw materials in a timely manner or if the price of raw materials increases significantly, 
production time and product costs could increase, which may adversely affect our business.

Our fabrication and packaging processes depend on raw materials such as silicon wafers, gold, copper, molding 
compound, petroleum and plastic materials and various chemicals and gases.  From time to time, suppliers may extend lead 
times, limit supplies or increase prices due to capacity constraints or other factors.  If the prices of these raw materials rise 
significantly, we may be unable to pass on the increased cost to our customers.  Our results of operations could be adversely 
affected if we are unable to obtain adequate supplies of raw materials in a timely manner or at reasonable price.  In addition, 
from time to time, we may need to reject raw materials because they do not meet our specifications or the sourcing of such 
materials do not comply with our conflict mineral policies, resulting in potential delays or declines in output.  Furthermore, 
problems with our raw materials may give rise to compatibility or performance issues in our products, which could lead to an 
increase in customer returns or product warranty claims.  Errors or defects may arise from raw materials supplied by third 
parties that are beyond our detection or control, which could lead to additional customer returns or product warranty claims 
that may adversely affect our business and results of operations.

Our operations may be delayed or interrupted and our business may be adversely affected as a result of our efforts to 
comply with environmental regulations applicable to our in-house wafer manufacturing, packaging and testing facility.

Our in-house manufacturing operations, including wafer manufacturing, packaging and testing, are subject to a variety of 
environmental regulations relating to the use, handling, discharge and disposal of toxic or otherwise hazardous materials.  See 
“Item 1. Business - Environmental matters.” Compliance with environmental regulations could require us to acquire expensive 
pollution control equipment or to incur other substantial expenses or investigate and remediate contamination at our current 

20

 
facilities.  Any failure, or any claim that we have failed, to comply with these regulations could cause delays in our production 
and capacity expansion and affect our public image, either of which could harm our business.  In addition, any failure to 
comply with these regulations could subject us to substantial fines or other liabilities, result in the suspension of our operating 
permit, or require us to terminate or adversely modify our in-house manufacturing operations.

We may not be able to accurately estimate provisions at fiscal period end for price adjustment and stock rotation rights 
under our agreements with distributors, and our failure to do so may impact our operating results.

We sell a majority of our products to distributors under arrangements allowing price adjustments and returns under stock 
rotation programs, subject to certain limitations.  As a result, we are required to estimate allowances for price adjustments and 
stock rotation for our products as inventory at distributors at each reporting period end.  Our ability to reliably estimate these 
allowances enables us to recognize revenue upon delivery of goods to distributors instead of upon resale of goods by 
distributors to end customers.

We estimate the allowance for price adjustment based on factors such as distributor inventory levels, pre-approved future 

distributor selling prices, distributor margins and demand for our products.  Our estimated allowances for price adjustments, 
which we offset against accounts receivable from distributors, were $16.7 million and $19.4 million at June 30, 2016 and 
2015, respectively.

Our accruals for stock rotation are estimated based on historical returns and individual distributor agreement, and stock 
rotation rights, which are recorded as accrued liabilities on our consolidated balance sheets, are contractually capped based on 
the terms of each individual distributor agreement.  Our estimated liabilities for stock rotation at June 30, 2016 and 2015 were  
$2.0 million and $1.9 million, respectively.

Our estimates for these allowances and accruals may be inaccurate.  If we subsequently determine that any allowance 
and accrual based on our estimates is insufficient, we may be required to increase the size of our allowances and accrual in 
future periods, which would adversely affect our results of operations and financial condition.

We depend on the continuing efforts of our senior management team and other key personnel, and if we lose a member of 
our senior management or are unable to successfully retain, recruit and train key personnel, our ability to develop and 
market our products could be harmed.

Our success depends upon the continuing services of members of our senior management team and various engineering 

and other technical personnel.  In particular, our engineers and other sales and technical personnel are critical to our future 
technological and product innovations.  Our industry is characterized by high demand and intense competition for talent and 
the pool of qualified candidates is limited.  We have entered into employment agreements with certain senior executives, but 
we do not have employment agreements with most of our employees.  Many of these employees could leave our company 
with little or no prior notice and would be free to work for a competitor.  If one or more of our senior executives or other key 
personnel are unable or unwilling to continue in their present positions, we may not be able to replace them easily or at all and 
other senior management may be required to divert attention from other aspects of our business.  In addition, we do not have 
“key person” life insurance policies covering any member of our management team or other key personnel.  The loss of any of 
these individuals or our inability to attract or retain qualified personnel, including engineers and others, could adversely affect 
our product introductions, overall business growth prospects, results of operations and financial condition.

If we fail to maintain an effective system of internal control over financial reporting, we may not be able to accurately 
report our financial results or prevent fraud.

Our management may conclude that our internal control over financial reporting is not effective.  Moreover, even if our 

management concludes that our internal control over financial reporting is effective, our independent registered public 
accounting firm may decline to issue an opinion as to the effectiveness of our internal control over financial reporting, or may 
issue a report that is qualified or adverse.  During the course of the initial evaluation of internal control over financial 
reporting, we or our independent registered public accounting firm may identify control deficiencies that we may not be able 
to remediate prior to the date of our first assessment of internal control over financial reporting.  Our failure to achieve and 
maintain effective internal control over financial reporting could result in the loss of investor confidence in the reliability of 
our financial statements or prevent fraud, which in turn could harm our business and negatively impact the trading price of our 
shares.

Failure to protect our patents and our other proprietary information could harm our business and competitive position.

21

Our success depends, in part, on our ability to protect our intellectual property.  We rely on a combination of patent, 
copyright (including mask work protection), trademark and trade secret laws, as well as nondisclosure agreements, license 
agreements and other methods to protect our intellectual property rights, which may not be sufficient to protect our intellectual 
property.  As of June 30, 2016, we owned 601 issued U.S. patents expiring between 2016 and 2035 and had 150 pending 
patent applications with the United States Patent and Trademark Office.  In addition, we own additional patents and have filed 
patent applications in several jurisdictions outside of the U.S, including China, Taiwan, Japan and Korea.

 Our patents and patent applications may not provide meaningful protection from our competitors, and there is no 

guarantee that patents will be issued from our patent applications.  The status of any patent or patent application involves 
complex legal and factual determinations and the breadth of a claim is uncertain.  In addition, our efforts to protect our 
intellectual property may not succeed due to difficulties and risks associated with:

• 

• 

• 

• 

• 

policing any unauthorized use of or misappropriation of our intellectual property, which is often difficult and costly 
and could enable third parties to benefit from our technologies without paying us;

others independently developing similar proprietary information and techniques, gaining authorized or unauthorized 
access to our intellectual property rights, disclosing such technology or designing around our patents;

the possibility that any patent or registered trademark owned by us may not be enforceable or may be invalidated, 
circumvented or otherwise challenged in one or more countries and the rights granted thereunder may not provide 
competitive advantages to us;

uncertainty as to whether patents will be issued from any of our pending or future patent applications with the scope 
of the claims sought by us, if at all; and

intellectual property laws and confidentiality protections, which may not adequately protect our intellectual property 
rights, including, for example, in China where enforcement of China intellectual property-related laws has historically 
been less effective, primarily because of difficulties in enforcement and low damage awards.

 We also rely on customary contractual protections with our customers, suppliers, distributors, employees and 
consultants, and we implement security measures to protect our trade secrets.  We cannot assure you that these contractual 
protections and security measures will not be breached, that we will have adequate remedies for any such breach or that our 
suppliers, employees, distributors or consultants will not assert rights to intellectual property arising out of such contracts.

In addition, we have a number of third-party patent and intellectual property license agreements, one of which requires 

us to make ongoing royalty payments.  In the future, we may need to obtain additional licenses, renew existing license 
agreements or otherwise replace existing technology.  We are unable to predict whether these license agreements can be 
obtained or renewed or the technology can be replaced on acceptable terms, or at all.

Intellectual property disputes could result in lengthy and costly arbitration, litigation or licensing expenses or prevent us 
from selling our products.

As is typical in the semiconductor industry, we or our customers may receive claims of infringement from time to time 
or otherwise become aware of potentially relevant patents or other intellectual property rights held by other parties that may 
cover some of our technology, products and services or those of our end customers.  The semiconductor industry is 
characterized by vigorous protection and pursuit of intellectual property rights which has resulted in protracted and expensive 
arbitration and litigation for many companies.  Patent litigation has increased in recent years due to increased assertions made 
by intellectual property licensing entities or non-practicing entities and increasing competition and overlap of product 
functionality in our markets.  

Any litigation or arbitration regarding patents or other intellectual property could be costly and time consuming and 
could divert our management and key personnel from our business operations.  We have in the past and may from time to time 
in the future become involved in litigation that requires our management to commit significant resources and time.  In 
addition, as part of our strategy to diversify our serviceable markets, we launched several key product families and 
technologies to enable high efficiency power conversion solutions and we plan to develop and commercialize new products in 
other power semiconductor markets.  Our entry into the commercial markets for high-voltage power semiconductors and other 
markets as a result of our diversification strategy may subject us to additional and increased risk of disputes or litigation 
relating to these products.

Because of the complexity of the technology involved and the uncertainty of litigation generally, any intellectual 
property arbitration or litigation involves significant risks.  Any claim of intellectual property infringement against us may 
require us to:

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• 

• 

• 

• 

• 

• 

• 

incur substantial legal and personnel expenses to defend the claims or to negotiate for a settlement of claims;

pay substantial damages or settlement to the party claiming infringement;

refrain from further development or sale of our products;

attempt to develop non-infringing technology, which may be expensive and time consuming, if possible at all;

enter into costly royalty or license agreements that might not be available on commercially reasonable terms or at all;

cross-license our technology with a competitor to resolve an infringement claim, which could weaken our ability to 
compete with that competitor; and

indemnify our distributors, end customers, licensees and others from the costs of and damages of infringement claims 
by our distributors, end customers, licensees and others, which could result in substantial expenses for us and damage 
our business relationships with them.

Any intellectual property claim or litigation could harm our business, results of operations, financial condition and 

prospects.

Global or regional economic, political and social conditions could adversely affect our business and operating results.

External factors such as potential terrorist attacks, acts of war, financial crises, such as the global or regional economic 

recession, or geopolitical and social turmoil in those parts of the world that serve as markets for our products could have 
significant adverse effect on our business and operating results in ways that cannot presently be predicted.  Any future 
economic downturn or recession in the global economy in general and, in particular, on the economies in China, Taiwan and 
other countries where we market and sell our products, will have an adverse effect on our results of operations.  Since the 
beginning of calendar year 2013, we have experienced a significant reduction in the demand for our products due to the 
declining PC markets, particularly from our distributors and customers in Taiwan, which have negatively impacted our 
revenue and profitability.

Our business operations could be significantly harmed by natural disasters or global epidemics.

We have research and development facilities located in Taiwan and the Silicon Valley in Northern California.  
Historically, these regions have been vulnerable to natural disasters and other risks, such as earthquakes, fires and floods, 
which may disrupt the local economy and pose physical risks to our property.  We also have sales offices located in Taiwan 
and Japan where similar natural disasters and other risks may disrupt the local economy and pose physical risks to our 
operations.  We are not currently covered by insurance against business disruption caused by earthquakes.  In addition, we 
currently do not have redundant, multiple site capacity in the event of a natural disaster or other catastrophic event.  In the 
event of such an occurrence, our business would suffer.

Our business could be adversely affected by natural disasters such as epidemics, outbreaks or other health crisis.  An 

outbreak of avian flu or H1N1 flu in the human population, or another similar health crisis, could adversely affect the 
economies and financial markets of many countries, particularly in Asia.  Moreover, any related disruptions to transportation 
or the free movement of persons could hamper our operations and force us to close our offices temporarily.

The occurrence of any of the foregoing or other natural or man-made disasters could cause damage or disruption to us, 

our employees, operations, distribution channels, markets and customers, which could result in significant delays in deliveries 
or substantial shortages of our products and adversely affect our business results of operations, financial condition or 
prospects.

Our insurance may not cover all losses, including losses resulting from business disruption or product liability claims.

We have limited product liability, business disruption or other business insurance coverage for our operations.  In 
addition, we do not have any business insurance coverage for our operations to cover losses that may be caused by litigation or 
natural disasters.  Any occurrence of uncovered loss could harm our business, results of operations, financial condition and 
prospects.

We may be adversely affected by any disruption in our information technology systems.

Our operations are dependent upon our information technology systems, which encompass all of our major business 

functions across offices internationally.  We rely upon such information technology systems to manage and replenish 
inventory, complete and track customer orders, coordinate sales activities across all of our products and services, maintain 

23

vital data and information, perform financial and accounting tasks and manage and perform various administrative and human 
resources functions.  A substantial disruption in our information technology systems for any extended time period (arising 
from, for example, system capacity limits from unexpected increases in our volume of business, outages or delays in our 
service) could result in delays in receiving inventory and supplies or filling customer orders and adversely affect our customer 
service and relationships.  Our systems might be damaged or interrupted by natural or man-made events or by computer 
viruses, physical or electronic break-ins, cyber attacks and similar disruptions af fecting the global Internet.  There can be no 
assurance that such delays, problems, or costs will not have a material adverse effect on our cash flows, results of operations 
and financial condition.

Our international operations subject our company to risks not faced by companies without international operations.

We have adopted a global business model under which we maintain significant operations and facilities through our 
subsidiaries located in the U.S., China, Taiwan and Hong Kong.  Our main research and development center is located in 
Silicon Valley, and our manufacturing and supply chain is located in China.  We also have sales offices and customers 
throughout Asia, the U.S. and elsewhere in the world.  Our international operations may subject us to the following risks:

• 

• 

• 

• 

• 

• 

economic and political instability;

costs and delays associated with transportations and communications;

coordination of operations through multiple jurisdictions and time zones;

fluctuations in foreign currency exchange rates;

trade restrictions, changes in laws and regulations relating to, amongst other things, import and export tariffs, 
taxation, environmental regulations, land use rights and property; and

the laws of, including tax laws, and the policies of the U.S. toward, countries in which we operate.

We are subject to the risk of increased income taxes and changes in existing tax rules. 

We conduct our business in multiple jurisdictions, including Hong Kong, Macau, the U.S., China, Taiwan, South Korea 
and Japan.  The calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax laws and 
regulations in various taxing jurisdictions.  Any of these jurisdictions may assert that we have unpaid taxes.  Our effective tax 
rates have fluctuated significantly in recent years.  Our effective tax rate was 406.6%, (100.8)% and (826.6)% for the fiscal 
years ended June 30, 2016, 2015 and 2014, respectively.  Any tax rate changes in the tax jurisdictions in which we operate 
could result in adjustments to our deferred tax assets, if applicable, which would affect our effective tax rate and results of 
operations.  We base our tax position upon the anticipated nature and conduct of our business and upon our understanding of 
the tax laws of the various countries in which we have assets or conduct activities.  However, our tax position is subject to 
review and possible challenge by tax authorities and to possible changes in law, which may have a retroactive effect.  In 
particular, various proposals over the years have been made to change certain U.S. tax laws relating to foreign entities with 
U.S. connections.  In addition, the U.S. government has proposed various other changes to the U.S. international tax system, 
certain of which could adversely impact foreign-based multinational corporate groups, and increased enforcement of U.S. 
international tax laws.  It is possible that these or other changes in the U.S. tax laws or proposed actions by international 
bodies such as the Organization of Economic Cooperation and Development (OECD) could significantly increase our U.S. or 
foreign income tax liability in the future.

In addition, our subsidiaries provide products and services to, and may from time to time undertake certain significant 

transactions with, us and other subsidiaries in different jurisdictions.  We have adopted transfer pricing arrangements for 
transactions among our subsidiaries.  Related party transactions are generally subject to close review by tax authorities, 
including requirements that transactions be priced at arm's length and be adequately documented.  If any tax authorities were 
successful in challenging our transfer pricing policies or other tax judgments, our income tax expense may be adversely 
affected and we could also be subject to interest and penalty charges which may harm our business, financial condition and 
operating results.

The imposition of U.S. corporate income tax on our Bermuda parent and non-U.S. subsidiaries could adversely affect our 
results of operations. 

We believe that our Bermuda parent and non-U.S. subsidiaries each operate in a manner that they would not be subject to 

U.S. corporate income tax because they are not engaged in a trade or business in the United States.  Nevertheless, there is a 
risk that the U.S. Internal Revenue Service may successfully assert that our Bermuda parent and non-U.S. subsidiaries are 
engaged in a trade or business in the United States.  If our Bermuda parent and non-U.S. subsidiaries were characterized as 

24

 
 
 
 
being so engaged, we would be subject to U.S. tax at regular corporate rates on our income that is effectively connected with 
U.S. trade or business, plus an additional 30% “branch profits” tax on the dividend equivalent amount, which is generally 
effectively connected income with certain adjustments, deemed withdrawn from the United States. Any such tax could 
materially and adversely affect our results of operations.

We may be classified as a passive foreign investment company, which could result in adverse U.S. federal income tax 
consequences for U.S. holders. 

Based on the current and anticipated valuation of our assets and the composition of our income and assets, we do not 

expect to be considered a passive foreign investment company, or PFIC, for U.S. federal income tax purposes for the 
foreseeable future.  However, we must make a separate determination for each taxable year as to whether we are a PFIC after 
the close of each taxable year and we cannot assure you that we will not be a PFIC for our 2016 taxable year or any future 
taxable year.  Under current law, a non-U.S. corporation will be considered a PFIC for any taxable year if either (1) at least 
75% of its gross income is passive income or (2) at least 50% of the value of its assets, generally based on an average of the 
quarterly values of the assets during a taxable year, is attributable to assets that produce or are held for the production of 
passive income.  PFIC status depends on the composition of our assets and income and the value of our assets, including, 
among others, a pro rata portion of the income and assets of each subsidiary in which we own, directly or indirectly, at least 
25% by value of the subsidiary's equity interests, from time to time.  Because we currently hold and expect to continue to hold 
a substantial amount of cash or cash equivalents, and because the calculation of the value of our assets may be based in part on 
the value of our common shares, which may fluctuate considerably given that market prices of technology companies 
historically often have been volatile, we may be a PFIC for any taxable year.  If we were treated as a PFIC for any taxable year 
during which a U.S. holder held common shares, certain adverse U.S. federal income tax consequences could apply for such 
U.S. holder.

Risks Related to Our Industry

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

As is typical in the semiconductor industry, the average selling price of a particular product has historically declined 
significantly over the life of the product.  In the past, we have reduced the average selling prices of our products in anticipation 
of future competitive pricing pressures, new product introductions by us or our competitors and other factors.  We expect that 
we will have to similarly reduce prices in the future for older generations of products.  Reductions in our average selling prices 
to one customer could also impact our average selling prices to all customers.  A decline in average selling prices would harm 
our gross margins for a particular product.  If not offset by sales of other products with higher gross margins, our overall gross 
margins may be adversely affected.  Our business, results of operations, financial condition and prospects will suffer if we are 
unable to offset any reductions in our average selling prices by increasing our sales volumes, reducing our costs and 
developing new or enhanced products on a timely basis, with higher selling prices or gross margins.

We may be adversely affected by the cyclicality of the semiconductor industry.

Our industry is highly cyclical and is characterized by constant and rapid technological change such as the introduction 
of smartphones and tablets that contributed to the decline in the PC market, product obsolescence and price erosion, evolving 
standards, uncertain product life cycles and wide fluctuations in product supply and demand.  The industry has, from time to 
time, experienced significant and sometimes prolonged, downturns, and often connected with or in anticipation of, maturing 
product cycles and declines in general economic conditions.  These downturns have been characterized by diminished product 
demand, production overcapacity, high inventory levels and accelerated erosion of average selling prices.  Any future 
downturns, in particular the PC markets, may reduce our revenue and result in us having excess inventory.  By contrast, any 
upturn in the semiconductor industry could result in increased competition for access to limited third-party foundry and 
packaging and testing capacity, which could prevent us from benefiting from such an upturn or reduce our profit margins.

Changes in industry standards, technology, customer requirements and government regulation could limit our ability to sell 
our products.

The semiconductor industry is characterized by changing demand for new and advanced functions, long design and sales 
cycles, rapid product obsolescence and price erosion, intense competition, evolving industry standards and wide fluctuations in 
product supply and demand.  Changes in industry standards, or the development of new industry standards, or, when 
applicable, government approval or disapproval of industry standards may make our products obsolete or negate the cost 

25

 
advantages we believe we have in our products.  We may be required to invest significant effort and to incur significant 
expense to redesign our products in order to address relevant standards, technological developments, customer requirements or 
regulations but may not have the financial resources to respond to these changes effectively or in a timely manner.  Any 
inability to meet these standards, regulations and requirements could harm our business, results of operations, financial 
condition and prospects.

Risks Related to Doing Business in China

China's economic, political and social conditions, as well as government policies, could affect our business and growth.

Our financial results have been, and are expected to continue to be, affected by the economy in China.  After 
experiencing rapid growth for more than a decade, China's economy recently has experienced a slowdown in the last two 
years. In 2015, China's economy grew by 6.9%, compared with 7.3% a year earlier, marking its slowest growth in a quarter of 
a century. As the government tried to shift the growth engine away from manufacturing and debt-fueled investment toward the 
services sector and consumer spending, the outlook of the Chinese economy is uncertain. 

If China’s economy is further slowing down, it may negatively affect our business operation and financial results. The 

China economy differs from the economies of most developed countries in many respects, including:

• 

• 

• 

• 

• 

higher level of government involvement;

early stage of development of a market-oriented economy;

rapid growth rate;

higher level of control over foreign currency exchange; and

less efficient allocation of resources.

 The Chinese economy has been transitioning from a planned economy to a more market-oriented economy.  Although in 

recent years the China government has implemented measures emphasizing the utilization of market forces for economic 
reform, the reduction of state ownership of productive assets and the establishment of corporate governance in business 
enterprises, the China government continues to retain significant control over the business and productive assets in China.  
Any changes in China's government policy or China's political, economic and social conditions, or in relevant laws and 
regulations, may adversely affect our current or future business, results of operation or financial condition.  These changes in 
government policy may be implemented through various means, including changes in laws and regulations, implementation of 
anti-inflationary measures, change of basic interest rate, changes in the tax rate or taxation system and the imposition of 
additional restrictions on currency conversion and imports.  Furthermore, given China's largely export-driven economy, any 
changes in the economies of the China's principal trading partners and other export-oriented nations may adversely affect our 
business, results of operations, financial condition and prospects.

Our ability to successfully expand our business operations in China depends on a number of factors, including 

macroeconomic and other market conditions, and credit availability from lending institutions.  In response to the recent global 
and Chinese economic recession, the China government has promulgated several measures aimed at expanding credit and 
stimulating economic growth.  We cannot assure you that the various macroeconomic measures, monetary policies and 
economic stimulus package adopted by the China government to guide economic growth will be effective in maintaining or 
sustaining the growth rate of the Chinese economy.  If measures adopted by the China government fail to achieve further 
growth in the Chinese economy, it may adversely affect our growth, business strategies and operating results.  In addition, 
changes in political and social conditions of China may adversely affect our ability to conduct our business in the region.  For 
example, geopolitical disputes and increased tensions between China and its neighboring countries in which we conduct 
business could make it more difficult for us coordinate and manage our international operations in such countries.   

Changes in China's laws, legal protections or government policies on foreign investment in China may harm our business.

Our business and corporate transactions, including our operations through the JV Company, are subject to laws and 

regulations applicable to foreign investment in China as well as laws and regulations applicable to foreign-invested 
enterprises.  These laws and regulations frequently change, and their interpretation and enforcement involves uncertainties that 
could limit the legal protections available to us.  Regulations and rules on foreign investments in China impose restrictions on 
the means that a foreign investor like us may apply to facilitate corporate transactions we may undertake.  In addition, the 
Chinese legal system is based in part on government policies and internal rules, some of which are not published on a timely 
basis or at all, that may have a retroactive effect.  As a result we may not be aware of our violation of these policies and rules 
until some time after the violation.  If any of our past operations are deemed to be non-compliant with Chinese law, we may be 

26

subject to penalties and our business and operations may be adversely affected.  For instance, under the catalogue for the 
Guidance of Foreign Investment Industries, some industries are categorized as sectors which are encouraged, restricted or 
prohibited for foreign investment.  As the catalogue for the Guidance of Foreign Investment Industries is updated every few 
years, there can be no assurance that the China government will not change its policies in a manner that would render part or 
all of our business to fall within the restricted or prohibited categories.  If we cannot obtain approval from relevant authorities 
to engage in businesses which become prohibited or restricted for foreign investors, we may be forced to sell or restructure a 
business which has become restricted or prohibited for foreign investment.  Furthermore, the China government has broad 
discretion in dealing with violations of laws and regulations, including levying fines, revoking business and other licenses and 
requiring actions necessary for compliance.  In particular, licenses and permits issued or granted to us by relevant 
governmental bodies may be revoked at a later time by higher regulatory bodies.  If we are forced to adjust our corporate 
structure or business as a result of changes in government policy on foreign investment or changes in the interpretation and 
application of existing or new laws, our business, financial condition, results of operations and prospects may be harmed.  
Moreover, uncertainties in the Chinese legal system may impede our ability to enforce contracts with our business partners, 
customers and suppliers, or otherwise pursue claims in litigation to recover damages or loss of property, which could adversely 
affect our business and operations.

Substantial uncertainties exist with respect to the enactment timetable, interpretation and implementation of draft PRC Foreign 
Investment Law and how it may impact the viability of our current corporate structure, corporate governance and business 
operations.

The Ministry of Commerce (MOC) published a discussion draft of the proposed Foreign Investment Law in January 
2015 aiming to, upon its enactment, replace the trio of existing laws regulating foreign investment in China, namely, the Sino-
foreign Equity Joint Venture Enterprise Law, the Sino-foreign Cooperative Joint Venture Enterprise Law and the Wholly Foreign-
invested Enterprise Law, together with their implementation rules and ancillary regulations. The draft Foreign Investment Law 
embodies  an  expected  PRC  regulatory  trend  to  rationalize  its  foreign  investment  regulatory  regime  in  line  with  prevailing 
international practice and the legislative efforts to unify the corporate legal requirements for both foreign and domestic investments. 
The MOC is currently soliciting comments on this draft and substantial uncertainties exist with respect to its enactment timetable, 
interpretation and implementation. The draft Foreign Investment Law, if enacted as proposed, may materially impact the viability 
of our current corporate structure, corporate governance and business operations in many aspects.

The draft Foreign Investment Law, if enacted as proposed, may also materially impact our corporate governance practice 
and  increase  our  compliance  costs.  For  instance,  the  draft  Foreign  Investment  Law  imposes  stringent  ad  hoc  and  periodic 
information reporting requirements on foreign investors and the applicable foreign invested entities. Aside from an investment 
implementation report and an investment amendment report that are required for each investment and alteration of investment 
specifics, an annual report is mandatory, and large foreign investors meeting certain criteria are required to report on a quarterly 
basis. Any company found to be non-compliant with these information reporting obligations may potentially be subject to fines 
and/or administrative or criminal liabilities, and the persons directly responsible may be subject to criminal liabilities. 

Limitations on our ability to transfer funds to our China subsidiaries could adversely affect our ability to expand our 
operations, make investments that could benefit our businesses and otherwise fund and conduct our business.

The transfer of funds from us to our China subsidiaries, either as a shareholder loan or as an increase in registered 
capital, is subject to registration with or approval by the China's governmental authorities, including the State Administration 
of Foreign Exchange, or SAFE, or the relevant examination and approval authority.  Our subsidiaries may also experience 
difficulties in converting our capital contributions made in foreign currencies into RMB due to changes in the China's foreign 
exchange control policies.  Therefore, it may be difficult to change capital expenditure plans once the relevant funds have been 
remitted from us to our China subsidiaries.  These limitations and the difficulties our China subsidiaries may experience on the 
free flow of funds between us and our China subsidiaries could restrict our ability to act in response to changing market 
situations in a timely manner.

China's currency exchange control and government restrictions on investment repatriation may impact our ability to 
transfer funds outside of China.

A significant portion of our business is conducted in China where the currency is the Renminbi.  Regulations in China 

permit foreign owned entities to freely convert the Renminbi into foreign currency for transactions that fall under the “current 
account,” which includes trade related receipts and payments, interest and dividends.  Accordingly, our Chinese subsidiaries 
may use Renminbi to purchase foreign exchange for settlement of such “current account” transactions without pre-approval.  
However, pursuant to applicable regulations, 
accumulated profits, if any, determined in accordance with Chinese accounting standards and regulations.  In calculating 

enterprises in China may pay dividends only out of their 

27

 
 
 
 
accumulated profits, foreign investment enterprises in China are required to allocate at least 10% of their accumulated profits 
each year, if any, to fund certain reserve funds, including mandated employee benefits funds, unless these reserves have 
reached 50% of the registered capital of the enterprises.

Other transactions that involve conversion of Renminbi into foreign currency are classified as “capital account” 
transactions; examples of “capital account” transactions include repatriations of investment by or loans to foreign owners, or 
direct equity investments in a foreign entity by a China domiciled entity.  “Capital account” transactions require prior approval 
from China's State Administration of Foreign Exchange (SAFE) or its provincial branch to convert a remittance into a foreign 
currency, such as U.S. dollars, and transmit the foreign currency outside of China.  

As a result of these and other restrictions under PRC laws and regulations, our China subsidiaries are restricted in their 
ability to transfer a portion of their net assets to the parent; such restricted portion amounted to approximately $84.2 million, 
or 34.8% of our total consolidated net assets as of June 30, 2016.  We have no assurance that the relevant Chinese 
governmental authorities in the future will not limit further or eliminate the ability of our China subsidiaries to purchase 
foreign currencies and transfer such funds to us to meet our liquidity or other business needs.  Any inability to access funds in 
China, if and when needed for use by the Company outside of China, could have a material and adverse effect on our liquidity 
and our business.

The M&A Rules and certain other PRC regulations establish complex procedures for some acquisitions of Chinese 
companies by foreign investors, which could make it more difficult for us to pursue growth through acquisitions in China.

The Regulations on Mergers and Acquisitions of Domestic Companies by Foreign Investors, or the M&A Rules, adopted 
by six PRC regulatory agencies in August 2006 and amended in 2009, and some other regulations and rules concerning mergers 
and acquisitions established additional procedures and requirements that could make merger and acquisition activities by foreign 
investors more time consuming and complex, including requirements in some instances that the MOC be notified in advance of 
any change-of-control transaction in which a foreign investor takes control of a PRC domestic enterprise. Moreover, the Anti-
Monopoly Law requires that the MOC shall be notified in advance of any concentration of undertaking if certain thresholds are 
triggered. In addition, the security review rules issued by the MOC that became effective in September 2011 specify that mergers 
and acquisitions by foreign investors that raise “national defense and security” concerns and mergers and acquisitions through 
which foreign investors may acquire de facto control over domestic enterprises that raise “national security” concerns are subject 
to strict review by the MOC, and the rules prohibit any activities attempting to bypass a security review, including by structuring 
the  transaction  through  a  proxy  or  contractual  control  arrangement.  In  the  future,  we  may  grow  our  business  by  acquiring 
complementary businesses. Complying with the requirements of the above-mentioned regulations and other relevant rules to 
complete such transactions could be time consuming, and any required approval processes, including obtaining approval from 
the MOC or its local counterparts may delay or inhibit our ability to complete such transactions, which could affect our ability 
to expand our business or maintain our market share.

Our result of operations may be negatively impacted by fluctuations in foreign currency exchange rates between U.S. 
dollars and Chinese Yuan, or RMB.

While U.S. dollars is our main functional currency and our revenue and a significant portion of our operating expenses 

are denominated in U.S. dollars, we are required to maintain local currencies, primarily the RMB, in our cash balances in 
connection with the funding of our oversea operations.  As a result, our costs and operating expenses may be exposed to 
adverse movements in foreign currency exchange rates between the U.S. dollars and RMB.  We also do not utilize any 
financial instruments to hedge or reduce potential losses due to the fluctuation of foreign currency exchange rates.  In general, 
any appreciation of U.S. dollars against a weaker RMB could reduce the value of our cash and cash equivalent balance, which 
could increase our operating expenses and negatively affect our cash flow, income and profitability.  The value of RMB 
against the U.S. dollars may fluctuate and is affected by many factors outside of our control, including changes in political and 
economic conditions, implementation of new monetary policies by the Chinese government and changes in banking 
regulations, and there is no guarantee that we will be able to mitigate or recoup any losses due to a significant fluctuation in 
the U.S. dollars/RMB exchange rates.

There are differences between PRC and U.S. Generally Accepted Accounting Principles.

Our profits will be derived from the business of the Joint Venture, which is established in the PRC. The profits available 

for distribution for companies established in the PRC are determined in accordance with PRC accounting standards, which 
may differ from the amounts determined under U.S. GAAP. In the event that the amount of the profits determined under the 
PRC accounting standard in a given year is less than that determined under the U.S. GAAP, our results of operations may be 
affected adversely.

28

 
 
PRC labor laws may adversely affect our results of operations.

On June 29, 2007, the PRC government promulgated the Labor Contract Law of the PRC, effective on January 1, 2008, 

to govern the establishment of employment relationships between employers and employees, and the conclusion, performance, 
termination of and the amendment to employment contracts. The Labor Contract Law imposes greater liabilities on employers 
and significantly affects the cost of an employer’s decision to reduce its workforce. Further, it requires that certain 
terminations be based upon seniority and not merit. In the event our subsidiaries decide to significantly change or decrease 
their workforce in China, the Labor Contract Law could adversely affect their ability to effect such changes in a manner that is 
most advantageous to our business or in a timely and cost-effective manner, thus materially and adversely affecting our 
financial condition and results of operations.

In recent years, compensation in various industries in China has increased and may continue to increase in the future. In 
order to attract and retain skilled personnel, we may need to increase the compensation of our employees. Compensation may, 
also, increase as inflationary pressure increases in China. In addition, under the Regulations on Paid Annual Leave for 
Employees, which became effective on January 1, 2008, employees who have served more than one year for a specific 
employer are entitled to a paid vacation ranging from 5 to 15 days, depending on length of service. Employees who waive 
such vacation time at the request of employers must be compensated for three times their normal salaries for each waived 
vacation day. This mandated paid-vacation regulation, coupled with the trend of increasing compensation, may result in 
increase in our employee-related costs and expenses and decrease in our profit margins.

Controversies affecting China's trade with the United States could harm our business.

While China has been granted permanent most favored nation trade status in the United States through its entry into the 
World Trade Organization, controversies between the United States and China may arise that threaten the trading relationship 
between the two countries.  At various times during recent years, the United States and China have had disagreements over 
political and economic issues.  In addition, disagreements between the United States and China with respect to their political, 
military or economic policies toward Taiwan may contribute to further controversies.  These controversies and trade frictions 
could have a material adverse effect on our business by, among other things, making it more difficult for us to coordinate our 
operations between the United States and China or causing a reduction in the demand for our products by customers in the 
United States or China.

Relations between Taiwan and China could negatively affect our business, financial condition and operating results and, 
therefore, the market value of our common shares.

Taiwan has a unique international political status.  China does not recognize the sovereignty of Taiwan.  Although 

significant economic and cultural relations have been established during recent years between Taiwan and China, relations 
have often been strained.  A substantial number of our key customers and some of our essential sales and engineering 
personnel are located in Taiwan, and we have a large number of operational personnel and employees located in China.  
Therefore, factors affecting military, political or economic relationship between China and Taiwan could have an adverse 
effect on our business, financial condition and operating results.

Risks Related to Our Corporate Structure and Our Common Shares

Our share price may be volatile and you may be unable to sell your shares at or above the purchase price, if at all.

Limited trading volumes and liquidity of our common shares on the NASDAQ Global Market may limit the ability of 

shareholders to purchase or sell our common shares in the amounts and at the times they wish.  In addition, the financial 
markets in the United States and other countries have experienced significant price and volume fluctuations, and market prices 
of technology companies have been and continue to be extremely volatile.  The trading price of our common shares on The 
NASDAQ Global Market ranged from a low of $6.83 to high of $17.91 from the commencement of the public trading of our 
common shares on April 29, 2010, to July 31, 2016 and from a low of $6.99 to high of $14.76 from July 1, 2015 to June 30, 
2016.  Volatility in the price of our shares may be caused by factors outside our control and may be unrelated or 
disproportionate to our operating results.

The market price for our common shares may be volatile and subject to wide fluctuations in response to factors, 

including:

• 

actual or anticipated fluctuations in our operating results;

29

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

general economic, industry, regional and global market conditions, including the economic conditions of specific 
market segments for our products, including the PC markets;

our failure to meet analysts' expectations, including expectation regarding our revenue, gross margin and operating 
expenses;

changes in financial estimates and outlook by securities research analysts;

our ability to increase our gross margin;

announcements by us or our competitors of new products, acquisitions, strategic partnerships, joint ventures or capital 
commitments; 

announcements of technological or competitive developments;

announcement of acquisition and major corporate transactions;

regulatory developments in our target markets affecting us, our customers or our competitors;

our ability to enter into new market segments, gain market share, diversify our customer base and successfully secure 
manufacturing capacity;

announcements regarding intellectual property disputes or litigation involving us or our competitors;

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

additions or departures of key personnel;

announcement of sales of our securities by us or by our major shareholders;

general economic or political conditions in China; and

other factors.

  In the past, securities class action litigation has often been brought against a company following periods of volatility in 
such company's share price.  This type of litigation could result in substantial costs and divert our management's attention and 
resources which could negatively impact our business and financial conditions. 

If securities or industry analysts do not publish research or reports about our business, or if they adversely change their 
recommendations regarding our common shares or if our operating results do not meet their expectations, the trading price 
of our common shares could decline. 

The market price of our common shares is influenced by the research and reports that industry or securities analysts 

publish about us or our business.  There is no guarantee that these analysts will understand our business and results, or that 
their reports will be accurate or correctly predict our operating results or prospects.  If one or more of these analysts cease 
coverage of our company or fail to publish reports on us regularly, we could lose visibility in the financial markets, which in 
turn could cause the market price of our common shares or its trading volume to decline.  Moreover, if one or more of the 
analysts who cover our company downgrade our common shares or if our operating results or prospects do not meet their 
expectations, the market price of our common shares could decline significantly.

Anti-takeover provisions in our bye-laws could make an acquisition of us more difficult and may prevent attempts by our 
shareholders to replace or remove our current management.

Certain provisions in our bye-laws may delay or prevent an acquisition of us or a change in our management.  In 
addition, by making it more difficult for shareholders to replace members of our board of directors, these provisions also may 
frustrate or prevent any attempts by our shareholders to replace or remove our current management because our board of 
directors is responsible for appointing the members of our management team.  These provisions include:

• 

• 

• 

the ability of our board of directors to determine the rights, preferences and privileges of our preferred shares and to 
issue the preferred shares without shareholder approval;

advance notice requirements for election to our board of directors and for proposing matters that can be acted upon at 
shareholder meetings; and

the requirement to remove directors by a resolution passed by at least two-thirds of the votes cast by the shareholders 
having a right to attend and vote at the shareholder meeting.

These provisions could make it more difficult for a third-party to acquire us, even if the third-party's offer may be 
considered beneficial by many shareholders.  As a result, shareholders may be limited in their ability to obtain a premium for 
their shares.

30

Insiders have substantial control over us, which could adversely affect the market price of our shares.

Our Chief Executive Officer, certain members of our management and directors, beneficially owned, in the aggregate, 
approximately 23.7% of our outstanding common shares as of June 30, 2016.  As a result, these shareholders will be able to 
exert significant control over all matters requiring shareholder approval, including the election of directors and approval of 
significant corporate transactions, such as a merger, consolidation, takeover or other business combination involving us.  This 
concentration of ownership may also discourage, delay or prevent a change in control of our company, which could deprive 
our shareholders of an opportunity to receive a premium for their shares as part of a sale of our company and may reduce the 
trading price of our shares.  Furthermore, the interests of these insiders could conflict with the interests of our other 
shareholders and, accordingly, any of them may take actions that favor their own interests and which may not be in the best 
interests of our other shareholders.  These actions may be taken even if they are opposed by our other shareholders.

31

Item 1B. 

    Unresolved Staff Comments 

None. 

32

Table of Contents

Item 2. 

Properties 

As of July 31, 2016, our primary U.S. facility, which houses our research and design function, as well as elements of 

marketing and administration, is located in Sunnyvale, California. We conduct our manufacturing, research and development, 
sales and marketing and administration in Asia and North America. We lease all properties used in our business except the 
wafer fabrication facility in Oregon acquired in January 2012. The following table sets forth the location, size and primary use 
of our properties:

Location

Square Footage

Primary Use

475 Oakmead Parkway
Sunnyvale, California, USA 94085

3131 Northeast Brookwood Parkway
Hillsboro, Oregon, USA 97124

Unit 701 Tesbury Centre, 28 Queen's
Road East, Wanchai, Hong Kong

Room 68, 27 Andar Centro
Comercial Praia Grande no.
429 Avenida da Praia Grande, Macau

Building 8/9, No. 91, Lane 109, Rongkang
Road, Songjiang District, Shanghai,
China 201614

Building B1, Dongkai Industrial Park,
Songjiang Export Process Zone, Area B, Songjiang, 
Shanghai, China 201614

Room 1002-1005, Building 1
Jiali BuYeCheng
No. 218 Tianmu W. Road
Zhabei District, Shanghai, China 200070

East 10F., Matshunichi Building,
No.9996 Shennan Blvd,
Shenzhen High-tech Park,
Nanshan District, Shenzhen, China 518057

9F, No.292, Yangguang St., Neihu
Dist., Taipei City 11491, Taiwan
R.O.C.

7F, Unit 3 & 5, 16F, Unit 1, No.32, Gaotie 2nd Rd.,
Zhubei City, Hsinchu County 30274, Taiwan
R.O.C.

10th Floor, Bandi Building, Bongeunsa-ro 114,
Gangnam-gu, Seoul,
Korea, 135-907

Innovalley C-801 253, Pangyo-ro, Bundang-gu,
Seongnam-si, Gyeonggi-do, 
Korea, 463-400

10F, Koujimachi Sunrise Building,
Koujimachi 2-2-31, Chiyoda-ku,
Tokyo, Japan 102-0083  

57,000   

Research and development, marketing, sales
and administration

245,000 Wafer fabrication facility

1,188    Sales and distribution

81    Manufacturing support

194,269    Packaging and testing, manufacturing support

247,789

Packaging and testing, manufacturing support

6,251   

Marketing and field application engineering
support

7,097

Marketing and field application engineering
support

17,642   

Marketing and field application engineering
support, research and development

9,443 Research and development

2,500   

Marketing and field application engineering
support

1,679   

Marketing and field application engineering
support

Marketing and field application engineering
support

884   

33

  
  
  
  
  
  
  
  
  
  
  
Table of Contents

We believe that our current facilities are adequate and that additional space will be available on commercially reasonable 

terms for the foreseeable future.

34

  
Item 3. 

Legal Proceedings

We are currently not a party to any material legal proceedings.  We have in the past, and may from time to time in the 
future, become involved in legal proceedings arising from the normal course of business activities.  The semiconductor industry 
is characterized by frequent claims and litigation, including claims regarding patent and other intellectual property rights as 
well as improper hiring practices.  Irrespective of the validity of such claims, we could incur significant costs in the defense 
thereof or could suffer adverse effects on our operations.

Item 4.    

Mine Safety Disclosures

Not Applicable.

35

PART II

Item 5. 

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

Market Price of Our Common Shares 

Our common shares have traded on the NASDAQ Global Market since April 29, 2010 under the symbol AOSL. The 

following table sets forth, for the periods indicated, the high and low sales prices of our common share as reported by the 
NASDAQ Global Market. 

2015

First Fiscal Quarter :

Second Fiscal Quarter:

Third Fiscal Quarter:

Fourth Fiscal Quarter:

2016

First Fiscal Quarter :

Second Fiscal Quarter:

Third Fiscal Quarter:

Fourth Fiscal Quarter:

Holders of Our Common Shares

July 1, 2014 - September 30, 2014

October 1, 2014 - December 31, 2014

January 1, 2015- March 31, 2015

April 1, 2015 - June 30, 2015

July 1, 2015 - September 30, 2015

October 1, 2015 - December 31, 2015

January 1, 2016- March 31, 2016

April 1, 2016 - June 30, 2016

$

$

$

$

$

$

$

$

10.82

9.68

9.27

9.14

8.94

9.88

11.98

14.76

$

$

$

$

$

$

$

$

9.07

8.38

8.69

8.16

6.99

7.88

8.23

11.79

As of July 31, 2016, there were approximately 112 holders of record of our common shares, not including those shares 

held in street or nominee name.

Dividend Policy

We have never declared or paid cash dividends on our common shares.  We currently intend to retain all available funds 

and any future earnings for use in the operation of our business and do not anticipate paying any dividends on our common 
share in the foreseeable future.  Any future determination to declare dividends will be made at the discretion of our board of 
directors and will depend on our financial condition, operating results, capital requirements, general business conditions and 
other factors that our board of directors may deem relevant.

Securities Authorized for Issuance Under Equity Compensation Plans

See Item 12 of Part III of this report regarding information about securities authorized for issuance under our equity 

compensation plans. 

36

Share Performance Graph 

The following graph compares the total cumulative shareholder return on our common shares with the total cumulative 

return of the NASDAQ Composite Index and the Philadelphia Semiconductor Index for the period from April 29, 2010 (the 
date our common share commenced trading on the NASDAQ Global Market) through June 30, 2016, the end of our last fiscal 
year. The graph assumes an investment of $100 on April 29, 2010 and the reinvestment of any dividends for NASDAQ 
Composite Index and Philadelphia Semiconductor Index. 

The comparisons in the graph below are required by the SEC and are not intended to forecast or be indicative of possible 

future performance of our common shares.

The above Stock Performance Graph and related information shall not be deemed “soliciting material” or to be “filed” 
with the Securities and Exchange Commission, nor shall such information be incorporated by reference into any future filing 
under the Securities Act of 1933 or Securities Exchange Act of 1934, each as amended, except to the extent that the Company 
specifically incorporates it by reference into such filing.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

In April 2015, our Board of Directors of the Company approved an increase in the remaining available amount under the 

Company’s then existing share repurchase program from approximately $17.8 million to $50.0 million.  Under this program, 
the repurchases may be made from the open market pursuant to a pre-established Rule 10b5-1 trading plan (as amended, the 
"Repurchase Trading Plan") or through privately negotiated transactions.  The amount and timing of any repurchases depend on 
a number of factors, including but not limited to, the trading price, volume and availability of our common shares, applicable 
legal requirements, our business and financial conditions an general market environment.  There is no guarantee that any 
repurchases under the program will be made or that such repurchases would enhance the value of our shares.

In June 2015, the Company commenced a modified Dutch auction tender offer (the "Tender Offer") to repurchase an 

aggregate of $30.0 million of its outstanding common shares with a price range between $8.50 and $9.20 per share.  In July 
2015, the Company completed the Tender Offer in which it purchased 3,296,703 shares of its common shares, at a purchase 
price of $9.10 per share, for an aggregate purchase price of $30.0 million, excluding fees and expenses relating to the Tender 
Offer.  These shares represented approximately 12.53% of the total number of the Company's common shares issued and 
outstanding as of June 30, 2015.  The Tender Offer was part of the $50.0 million share repurchase program approved by the 
Board in April 15, 2015.

There was no purchase of equity securities by the Company or affiliated purchasers during the fourth quarter of fiscal year 

2016.

37

 
 
Item 6.  Selected Financial Data 

We have derived the selected consolidated statements of operations data for the fiscal years ended June 30, 2016, 2015  
and 2014 and selected consolidated balance sheet data as of June 30, 2016 and 2015 from our audited consolidated financial 
statements and related notes included elsewhere in this report.  We have derived the selected consolidated statements of 
operations data for the fiscal years ended June 30, 2013 and 2012 and selected consolidated balance sheets as of June 30, 2014, 
2013 and 2012 from consolidated financial statements not included in this report.  The information set forth below is not 
necessarily indicative of results of future operations, and should be read in conjunction with Item 7, “Management's Discussion 
and Analysis of Financial Condition and Results of Operations” in this Annual Report on Form 10-K.

Consolidated Statements of Operations:

Revenue

Cost of goods sold

Gross profit

Operating expenses:

Research and development

Selling, general and administrative

Impairment of long-lived assets

Total operating expenses

Operating income (loss)

Interest income and other income (loss), net

Interest expense

Income (loss) before income taxes

Income tax expense

Net loss including noncontrolling interest

Net loss attributable to noncontrolling interest
Net loss attributable to Alpha and Omega
Semiconductor Limited

Year Ended June 30,

2016

2015
2013
2014
(in thousands, except per share data)

2012

$ 335,661

$ 327,935

$ 318,121

$ 337,436

$ 342,291

269,839

65,822

267,453

60,482

259,050

59,071

272,851

64,585

259,126

83,165

26,006

37,874

432

64,312

1,510

(498)

(23)

989

4,021

(3,032)

(104)

27,075

37,625

—

64,700
(4,218)
533
(181)
(3,866)
3,897 (1)
(7,763)
—

24,409

34,554

—

58,963

108
(177)
(266)
(335)
2,769 (1)
(3,104)
—

27,833

35,948

2,557

66,338
(1,753)
535
(356)
(1,574)
3,852 (1)
(5,426)
—

30,630

35,678

—

66,308

16,857
(17)
(342)
16,498

3,581

12,917

—

$ (2,928)

$ (7,763)

$ (3,104)

$ (5,426)

$ 12,917

Basic

Diluted

$

$

(0.13)

(0.13)

$

$

(0.29)
(0.29)

$

$

(0.12)
(0.12)

$

$

(0.21)
(0.21)

$

$

0.52

0.50

Weighted average number of common share
attributable to Alpha and Omega
Semiconductor Limited used to compute net
income (loss) per share:

Basic

Diluted

22,452

22,452

26,429

26,429

25,952

25,952

25,348

25,348

24,656

25,606

38

 
 
 
 
 
 
 
 
 
As of June 30,

2016

2015

2014

2013

2012

(in thousands)

Consolidated Balance Sheet Data:

Cash and cash equivalents

Working Capital

Total assets

Bank borrowings - long term

Capital leases - long term

Total shareholders' equity

$

$

$

$

$

$

87,774

$ 106,085

$ 117,788

$

92,406

$

82,166

118,450

$ 147,351 (1) (2) $ 151,322 (1)(2) $ 149,335 (1) (2) $ 127,073

318,505

$ 347,904 (1) (2) $ 362,925 (1)(2) $ 354,166 (1) (2) $ 365,574

— $

1,695

$

—

64

$

$

—

1,005

242,142

$ 276,639

$ 283,388

$

$

13,571

195

$ 281,600

$

$

16,429

1,085

$ 279,393

(1) During the quarter ended March 31, 2016, we identified and recorded immaterial errors related to the fiscal years ended 
June 30, 2015, 2014 and 2013.  The immaterial errors resulted from overstatement of long-term deferred income tax liabilities 
and income tax expenses.  The adjustments resulted in a decrease in net loss of $172,000, $204,000 and $149,000 for the years 
ended June 30, 2015, 2014 and 2013, respectively and a decrease in basic and diluted net loss per common share of $0.01 for 
the years ended June 30, 2015, 2014 and 2013. The impact to the consolidated balance sheets as of June 30, 2015, 2014 and 
2013 was a decrease in deferred income tax liabilities of $525,000, $353,000 and $149,000, respectively and an increase in 
retained earnings by the same amounts. 

(2) During the quarter ended June 30, 2016, we early adopted ASU 2015-17, Balance Sheet Classification of Deferred Taxes, 
and have made the necessary conforming reclassifications to the accompanying consolidated balance sheet data.  The 
application of the provisions of ASU 2015-17 resulted in a $2.2 million, $2.8 million, and $3.0 million reduction in current 
deferred tax assets, a $1.5 million, $1.4 million, and $0.9 million increase in long-term deferred income tax assets and a $0.7 
million, $1.4 million and $2.2 million reduction in non-current deferred income tax liabilities at June 30, 2015, 2014 and 2013, 
respectively.

39

 
Item 7. 

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

You should read the following discussion of the financial condition and results of our operations in conjunction with our 
consolidated financial statements and the notes to those statements included elsewhere in this annual report. Our consolidated 
financial statements contained in this annual report are prepared in accordance with U.S. GAAP.

Overview

We are a designer, developer and global supplier of a broad portfolio of power semiconductors.  Our portfolio of power 

semiconductors includes approximately 1,600 products, and has grown significantly with the introduction of over 90 new 
products during each of the fiscal years ended June 30, 2016, 2015 and 2014.  Our teams of scientists and engineers have 
developed extensive intellectual properties and technical knowledge that encompass major aspects of power semiconductors, 
which we believe it enables us to introduce and develop innovative products to address the increasingly complex power 
requirements of advanced electronics.  We have an extensive patent portfolio that consists of 601 patents and 150 patent 
applications in the United States as of June 30, 2016.  We differentiate ourselves by integrating our expertise in technology, 
design and advanced manufacturing and packaging to optimize product performance and cost.  Our portfolio of products targets 
high-volume applications, including personal computers, flat panel TVs, LED lighting, smart phones, battery packs, consumer 
and industrial motor controls and power supplies for TVs, computers, servers and telecommunications equipment.

Our business model leverages global resources, including research and development and manufacturing in the United 

States and Asia.  Our sales and technical support teams are localized in several growing markets.  We operate a 200mm wafer 
fabrication facility located in Hillsboro, Oregon, or the Oregon fab, which is critical for us to accelerate proprietary technology 
development, new product introduction and improve our financial performance in the long run.  To meet the market demand for 
the more mature high volume products, we also utilize the wafer manufacturing capacity of selected third party foundries.  For 
assembly and test, we primarily rely upon our in-house facilities in China.  In addition, we utilize subcontracting partners for 
industry standard packages.  We believe our in-house packaging and testing capability provides us with a competitive 
advantage in proprietary packaging technology, product quality, cost and sales cycle time.

On March 29, 2016, we entered into a joint venture contract (the “JV Agreement”) with two investment funds affiliated 
with the municipalities of Chongqing (the “Chongqing Funds”), pursuant to which we and Chongqing Funds will form a joint 
venture, (the “JV Company”), for the purpose of constructing a power semiconductor packaging, testing and wafer fabrication 
facility in the Liangjiang New Area of Chongqing, China (the “JV Transaction”).  The total initial capitalization of the JV 
Company will be $330.0 million (the “Initial Capitalization”).  The Initial Capitalization will be completed in stages 
commencing on the incorporation of the JV Company.  We own 51%, and the Chongqing Funds owns 49%, of the equity 
interest in the JV Company.  In July 2016, Chongqing Funds contributed $33.0 million to the JV Company.  We expect the JV 
company to commence its initial production in the first half of fiscal 2018.  Over the long term, the JV Company expects to 
construct a 12-inch wafer fabrication facility for the production of power semiconductors.  We expect the joint venture to 
deliver significant cost savings as well as drive meaningful improvements in working capital and capital expenditures.

During the fiscal year ended June 30, 2016, we continued our diversification program by developing new silicon and 

packaging platforms to expand our serviceable available market, or SAM and offer higher performance products.  Our metal-
oxide-semiconductor field-effect transistors, or MOSFET, portfolio expanded significantly across a full range of voltage 
applications.  For example, during the fourth quarter of fiscal year of 2016, we introduced Best-In-Class DrMOS-IV Power 
Modules with an EZPair™ package.  The new device enables high power density voltage regulator solutions ideal for 
Notebook PCs, servers, and graphic cards applications.  We also released 8 new products in the 60V MOSFET family.  These 
products are designed for synchronous rectification in flyback converters, used in quick chargers for smart phones and other 
portable devices.  Moreover, we launched a second generation of Constant On-Time (COT) buck converters which provides an 
effective solution for next generation computing chipsets that are pushing the limits of DC/DC converter size.  In addition, we 
introduced our first 2.38 mOhm device for battery protection.  This new device offers the best-in-class source-to-source on-
resistance (Rsson), giving the battery protection circuit designer the lowest voltage drop and temperature rise in the protection 
circuit module.  During the second quarter of fiscal year of 2016, we introduced the industry's first single n-channel 45V 
MOSFET with an ultra-low on-resistance of 1.15Ohms at 10V.  This addition to our medium voltage product portfolio is 
designed to address a wide range of applications including secondary-side synchronous rectification in AC/DC and DC/DC 
converters, as well as industrial and motor drive applications.  We also released AOC3864, a common-drain 20V dual n-
channel MOSFET with an ultra-low on-resistance of 5.7mOhms at 4.5V.  This new device offers the best approach in designing 
battery protection circuit modules, while providing a strong and reliable solution.  In addition, we introduced the new 
generation of high efficiency PairFETs.  The AOE6930 is an asymmetric package with integrated high-side and low-side 
MOSFETs.  The product is designed with our latest silicon technology to optimize the conducting resistance and the switching 
characteristics of both MOSFETs in order to attain the highest efficiency over the whole output range when working as the 

40

power stage for a Vcore power supply circuit.  The combination of AOS's XSFET™ technology in this new generation PairFET 
package, gives the device an extra advantage in thermal dissipation.  Moreover, we released the AOZ3101, a high efficiency, 
simple-to-use synchronous buck regulator, with an operating input voltage range from 4.5V to 18V, supplying 2A of continuous 
current.  The device offers a low on-resistant power stage in a thermally enhanced 3mm x 3mm DFN package, allowing cooler 
power conversion for a variety of consumer electronics application such as LCD TVs, set-top boxes, as well as DVD players 
and recorders.  During the first quarter of fiscal year of 2016, we released AO4294, the latest addition to our family of high 
efficiency charging solutions.  This new device is offered in an easy-to-use SO-8 package, which helps manufacturers keep the 
mounting cost low, while still getting the best efficiency and power dissipation possible.  The AO4294 is an ideal solution for 
synchronours rectification in high efficiency chargers and adapters for mobile devices.  We also released AOZ3053, a 5A 
EZBuck DC/DC regulator with smart mode adaption functions, available in a thermally enhanced exposed pad SO-8 package.  
The AOZ3053 is the first of this new smart platform, which allows for more thermally efficient DC/DC solutions for consumer, 
networking and industrial applications such as LCD TVs, set-top boxes, cable modems, and power supplies.

Factors affecting our performance

Our performance is affected by several key factors, including the following:

The global, regional economic and PC market conditions: Because our products primarily serve consumer electronic 

applications, a deterioration of the global and regional economic conditions could materially affect our revenue and results of 
operations.  In particular, because a significant amount of our revenue is derived from sales of products in the personal 
computer, or PC markets, such as notebooks, motherboards and notebook battery packs, a significant decline or downturn in the 
PC markets can have a material adverse effect on our revenue and results of operations.  Our revenue from the PC markets 
accounted for approximately 38.5%, 47.1% and 45.2% of our total revenue for the years ended June 30, 2016, 2015 and 2014, 
respectively. 

We have experienced a significant global decline in the PC markets due to continued growth of demand in tablets and 
smart phones, worldwide economic conditions and the industry inventory correction which had and may continue to have a 
material negative impact on the demand for our products, revenue, factory utilization, gross margin, our ability to resell excess 
inventory, and other performance measures. In response to this trend, we have been and are continuing to execute our strategies 
to diversify our product portfolio, penetrate into other market segments, including the consumer, communications and industrial 
markets, improve gross margin and profit by implementing cost control measures.  We are making progress in reducing our 
reliance on the computing market, and we are also committed to continue to support our computing business and capitalize on 
the opportunity with a more focused and competitive PC product strategy.  However, as we develop and sell new products that 
serve more diversified markets, we expect that sales based on the PC markets, as a percentage of the total revenue, will 
continue to decline.  If the rate of decline in the PC markets is faster than we expected, or if we cannot successfully diversify or 
introduce new products to keep pace with the declining PC markets, we may not be able to alleviate its negative impact, which 
will adversely affect our results of operations.  

Manufacturing Costs:  Our gross margin may be affected by our manufacturing costs, including utilization of our 
manufacturing facilities, pricing of wafers from third party foundries and semiconductor raw materials, which may fluctuate 
from time to time largely due to the market demand and supply.  Capacity utilization affects our gross margin because we have 
certain fixed costs associated with our packaging and testing facilities and our Oregon fab.  If we are unable to utilize our 
manufacturing facilities at a desired level, our gross margin may be adversely affected.  In addition, we expect that in the long 
term our joint venture agreement with the Chongqing Funds will reduce our costs of manufacturing.  However, our 
manufacturing costs may increase in the short term prior to the commencement of operation of the JV Company, because we 
may be required to incur additional costs to acquire packaging and testing capacity in order make up for the reduced capacity 
during the period in which we transfer our equipments from Shanghai to Chongqing.

Erosion of average selling price: Erosion of average selling prices of established products is typical in our industry. 
Consistent with this historical trend, we expect that average selling prices of our existing products will continue to decline in 
the future.  However, as a normal course of business, we seek to offset the effect of declining average selling prices by 
introducing new and higher value products, expanding existing products for new applications and new customers, and reducing 
manufacturing cost of existing products.

Product introductions and customers' product requirements: Our success depends on our ability to introduce products on 

a timely basis that meet or are compatible with our customers' specifications and performance requirements.  Both factors, 
timeliness of product introductions and conformance to customers' requirements, are equally important in securing design wins 
with our customers.  As we accelerate the development of new technology platforms, we expect to increase the pace at which 

41

we introduce new products and obtain design wins.  Our failure to introduce new products on a timely basis that meet 
customers' specifications and performance requirements, particularly those products with major OEM customers, and our 
inability to continue to expand our serviceable markets, could adversely affect our financial performance, including loss of 
market share.  We expect our joint venture with Chongqing Funds to commence operation in July 2017, and we believe that the 
joint venture will increase and diversify our customer base, particularly in China, in the long term.   However, there is no 
guarantee that the joint venture will commence timely or at all.  Even if we are able to commence operation, we may not be 
successful in acquiring a sufficient number of new customers to offset the additional costs due to various factors, including but 
are not limited to, competition from other semiconductor companies in the region, our lack of history and prior relationships 
with customers as a new entrant, difficulties in executing our joint venture strategies, lack of control over our operations and 
the general economic conditions in Chongqing and China.

Distributor ordering patterns and seasonality: Our distributors place purchase orders with us based on their forecasts of 

end customer demand, and this demand may vary significantly depending on the sales outlook and market and economic 
conditions of end customers.  Because these forecasts may not be accurate, channel inventory held at our distributors may 
fluctuate significantly, which in turn may prompt distributors to make significant adjustments to their purchase orders placed 
with us.  As a result, our revenue and operating results may fluctuate significantly from quarter to quarter.  In addition, because 
our products are used in consumer electronics products, our revenue is subject to seasonality.  Our sales seasonality is affected 
by numerous factors, including global and regional economic conditions as well as the PC market conditions, revenue 
generated from new products, changes in distributor ordering patterns in response to channel inventory adjustments and end 
customer demand for our products and fluctuations in consumer purchase patterns prior to major holiday seasons.  In recent 
periods, broad fluctuations in the semiconductor markets and the global and regional economic conditions, in particular the 
decline of the PC market conditions, have had a more significant impact on our results of operations than seasonality.

Principal line items of statements of income

The following describes the principal line items set forth in our consolidated statements of operations:

Revenue

We generate revenue primarily from the sale of power semiconductors, consisting of power discretes and power ICs. 
Historically, a majority of our revenue was derived from power discrete products and a smaller amount was derived from power 
IC products. Because our products typically have three-year to five-year life cycles, the rate of new product introduction is an 
important driver of revenue growth over time. We believe that expanding the breadth of our product portfolio is important to 
our business prospects, because it provides us with an opportunity to increase our total bill-of-materials within an electronic 
system and to address the power requirements of additional electronic systems.  In addition, a small percentage of our total 
revenue is generated by providing packaging and testing services to third-parties through one of our subsidiaries.

Our product revenue includes the effect of the estimated stock rotation returns and price adjustments that we expect to 
provide to our distributors.  Stock rotation returns are governed by contract and are limited to a specified percentage of the 
monetary value of products purchased by the distributor during a specified period.  At our discretion or upon our direct 
negotiations with the original design manufacturers ("ODMs") or original equipment manufacturers ("OEMs"), we may elect to 
grant special pricing that is below the prices at which we sold our products to the distributors.  In these situations, we will grant 
price adjustments to the distributors reflecting such special pricing.  We estimate the price adjustments for inventory at the 
distributors based on factors such as distributor inventory levels, pre-approved future distributor selling prices, distributor 
margins and demand for our products.

Cost of goods sold

Our cost of goods sold primarily consists of costs associated with semiconductor wafers, packaging and testing, 

personnel, including share-based compensation expense, overhead attributable to manufacturing, operations and procurement, 
and cost associated with yield improvements, capacity utilization, warranty and inventory reserves.  As the volume of sales 
increases, we expect cost of goods sold to increase.  We implemented a process to improve our factory capacity utilization rates 
by transferring more wafer production to our Oregon fab and reducing our reliance on outside foundries.  While our utilization 
rates cannot be immune to the market conditions, our goal is to make them less vulnerable to market fluctuations.  We believe 
our market diversification strategy and product growth will drive higher volume of manufacturing which will improve our 
factory utilization rates and gross margin in the long run.

Operating expenses

42

Our operating expenses consist of research and development, selling, general and administrative expenses and 
impairment of long-lived assets.  We expect our operating expenses as a percentage of revenue to fluctuate from period to 
period as we continue to exercise cost control measures in response to the declining PC market as well as align our operating 
expenses to the revenue level.

Research and development expenses.  Our research and development expenses consist primarily of salaries, bonuses, 

benefits, share-based compensation expense, expenses associated with new product prototypes, travel expenses, fees for 
engineering services provided by outside contractors and consultants, amortization of software and design tools, depreciation of 
equipment and overhead costs.  We continue to invest in developing new technologies and products utilizing our own 
fabrication and packaging facilities as it is critical to our long-term success.  We also evaluate appropriate investment levels and 
stay focused on new product introductions to improve our competitiveness.  We expect that our research and development 
expenses will fluctuate from time to time.

Selling, general and administrative expenses.  Our selling, general and administrative expenses consist primarily of 

salaries, bonuses, benefits, share-based compensation expense, product promotion costs, occupancy costs, travel expenses, 
expenses related to sales and marketing activities, amortization of software, depreciation of equipment, maintenance costs and 
other expenses for general and administrative functions as well as costs for outside professional services, including legal, audit 
and accounting services.  We expect our selling, general and administrative expenses to fluctuate in the near future as we 
continue to exercise cost control measures in response to the declining PC market.

Impairment of Long-Lived Assets:  Long-lived assets or asset groups are reviewed for impairment whenever events or 
changes in circumstances indicate that the carrying amount of an asset might not be recoverable.  The recoverability of an asset 
or asset group is assessed by determining if the carrying value of the asset or asset group exceeds the sum of the projected 
undiscounted cash flows expected to result from the use and eventual disposition of the assets over the remaining economic 
life.  The impairment loss is measured based on the difference between the carrying amount and estimated fair value.

Income tax expense

We are subject to income taxes in various jurisdictions.  Significant judgment and estimates are required in determining 
our worldwide income tax expense.  The calculation of tax liabilities involves dealing with uncertainties in the application of 
complex tax regulations of different jurisdictions globally.  We establish accruals for potential liabilities and contingencies 
based on a more likely than not threshold to the recognition and de-recognition of uncertain tax positions.  If the recognition 
threshold is met, the applicable accounting guidance permits us to recognize a tax benefit measured at the largest amount of tax 
benefit that is more than likely to be realized upon settlement.  If the actual tax outcome of such exposures is different from the 
amounts that were initially recorded, the differences will impact the income tax and deferred tax provisions in the period in 
which such determination is made.  Changes in the location of taxable income (loss) could result in significant changes in our 
income tax expense.

We record a valuation allowance against deferred tax assets if it is more likely than not that a portion of the deferred tax 

assets will not be realized, based on historical profitability and our estimate of future taxable income in a particular jurisdiction.  
Our judgments regarding future taxable income may change due to changes in market conditions, changes in tax laws, tax 
planning strategies or other factors.  If our assumptions and consequently our estimates change in the future, the deferred tax 
assets may increase or decrease, resulting in corresponding changes in income tax expense.  Our effective tax rate is highly 
dependent upon the geographic distribution of our worldwide profits or losses, the tax laws and regulations in each 
geographical region where we have operations, the availability of tax credits and carry-forwards and the effectiveness of our 
tax planning strategies.

Reclassifications and Correction of Immaterial Errors

Certain amounts previously reported in the Management's Discussion and Analysis of Financial Condition and Results of 
Operations section of this report have been either reclassified to conform with current presentation or restated.  For a complete 
overview on adjustments impacting Management's Discussion and Analysis of Financial Condition and Results of Operations, 
see footnote 1 of this report.

Operating results

The following tables set forth our results of operations and as a percentage of revenue for the fiscal years ended June 30, 

2016, 2015 and 2014. Our historical results of operations are not necessarily indicative of the results for any future period.

43

Revenue

Cost of goods sold (1)

Gross profit

Operating expenses:

Research and development (1)

Selling, general and administrative (1)

Impairment of long-lived assets

Total operating expenses

Operating income (loss)

Interest income and other income (loss), net

Interest expense

Income (loss) before income taxes

Income tax expense

Net loss including noncontrolling interest
Net loss attributable to noncontrolling
interest
Net loss attributable to Alpha and Omega
Semiconductor Limited

Year Ended June 30, 

2016

2015

2014

2016

2015

2014

(in thousands)

(% of revenue)

$ 335,661

$ 327,935

$ 318,121

100.0 % 100.0 % 100.0 %

269,839

267,453

259,050

65,822

60,482

59,071

80.4 %

19.6 %

81.6 %

18.4 %

81.4 %

18.6 %

26,006

37,874

432

64,312

1,510

(498)

(23)

989

4,021

(3,032)

27,075

37,625

—

64,700
(4,218)
533
(181)
(3,866)
3,897
(7,763)

24,409

34,554

—

58,963

108
(177)
(266)
(335)
2,769
(3,104)

7.7 %

11.3 %

0.1 %

19.1 %

0.5 %

(0.1)%

— %

0.4 %

1.2 %

(0.8)%

8.3 %

11.5 %

— %

19.8 %

(1.4)%

0.2 %

(0.1)%

(1.3)%

1.2 %

(2.5)%

7.7 %

10.9 %

— %

18.6 %

— %

(0.1)%

(0.1)%

(0.2)%

0.9 %

(1.1)%

(104)

—

—

— %

— %

— %

$ (2,928) $ (7,763) $ (3,104)

(0.8)%

(2.5)%

(1.1)%

(1) Includes share-based compensation expense as follows:

Cost of goods sold

Research and development

Selling, general and administrative

Year Ended June 30,

2016

2015

2014

2016

2015

2014

(in thousands)

(% of revenue)

$

636

$

1,115

2,562

$

669

779

3,042

$

4,313

$

4,490

$

614

786

1,975

3,375

0.2%

0.3%

0.8%

1.3%

0.2%

0.2%

0.9%

1.3%

0.2%

0.2%

0.6%

1.0%

Revenue

  The following is a summary of revenue by product type:

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

Power discrete

$ 252,063

(in thousands)
$ 248,716

$ 246,033

(in thousands)
3,347
$

(in percentage)

(in thousands)
2,683

(in percentage)
1.1 %

1.3 % $

Power IC
Packaging and testing
services

Fiscal 2016 vs 2015

69,344

63,529

53,993

5,815

9.2 %

9,536

17.7 %

14,254

15,690

18,095

$ 335,661

$ 327,935

$ 318,121

$

(1,436)
7,726

(9.2)%

2.4 % $

(2,405)
9,814

(13.3)%

3.1 %

Total revenue was $335.7 million for fiscal year 2016, an increase of $7.7 million, or 2.4%, as compared to $327.9 
million for fiscal year 2015.  The increase consisted of $3.3 million and $5.8 million in sales of power discrete products and 
sales of power IC products, respectively, partially offset by a $1.4 million decrease in sales of packaging and testing services.  

44

 
 
 
 
The increase in power discrete and power IC products was primarily due to an 7.8% increase in average selling price as 
compared to last year due to a shift in product mix, partially offset by a 4.3% decrease in unit shipments.  The decrease in 
revenue of packaging and testing services as compared to last year was primarily due to reduced demand as a result of the 
declining PC market.  During fiscal year 2016, we accelerated the development of new technology platforms which allowed us 
to introduce 36 medium and high voltage MOSFET products, targeting primarily the power supply, industrial markets, and 
consumer, as well as 25 low voltage MOSFET products primarily for the computing and communication markets.  In addition, 
we introduced 32 Power IC new products for consumer, industrial markets and computing applications.

Fiscal 2015 vs 2014

Total revenue was $327.9 million for fiscal year 2015, an increase of $9.8 million, or 3.1%, as compared to $318.1 
million for fiscal year 2014.  The increase consisted of $2.7 million and $9.5 million in sales of power discrete products and 
sales of power IC products, respectively, partially offset by a $2.4 million decrease in sales of packaging and testing services.  
The increase in power discrete and power IC products was primarily due to an 11.0% increase in unit shipments, partially offset 
by a 6.3% decrease in average selling price as compared to the same period of last year mainly due to selling price erosion in 
the computing and consumer markets and to a lesser extent, a shift in product mix.  The decrease in revenue of packaging and 
testing services as compared to last year was primarily due to reduced demand as a result of the declining PC market. 

Cost of goods sold and gross profit

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

Cost of goods sold

$ 269,839

(in thousands)
$ 267,453

$ 259,050

(in thousands)
2,386
$

  Percentage of revenue

80.4%

81.6%

81.4%

(in percentage)

(in thousands)
8,403

(in percentage)
3.2%

0.9% $

Gross profit

$ 65,822

$ 60,482

$ 59,071

$

5,340

8.8% $

1,411

2.4%

  Percentage of revenue

19.6%

18.4%

18.6%

Fiscal 2016 vs 2015

Cost of goods sold was $269.8 million for fiscal year 2016, an increase of $2.4 million, or 0.9%, as compared to $267.5 

million for fiscal year 2015.  The increase was primarily due to product mix, partially offset by decrease in unit shipments.  The 
increase was partially offset by the overall manufacturing cost reduction as compared to last fiscal year.  Gross margin 
increased by 1.2 percentage points to 19.6% for fiscal year 2016, as compared to 18.4% for fiscal year 2015.  The increase in 
gross margin was primarily due to better product mix and higher factory utilization.  We expect our gross margin to continue to 
fluctuate in the future as a result of variations in our product mix, factory utilization, semiconductor wafer and raw material 
pricing, manufacturing labor cost and general economic and PC market conditions. 

Fiscal 2015 vs 2014

Cost of goods sold was $267.5 million for fiscal year 2015, an increase of $8.4 million, or 3.2%, as compared to $259.1 

million for fiscal year 2014, primarily due to increased unit shipments.  The increase was partially offset by overall 
manufacturing cost reduction due to continued cost control efforts and improved factory utilization in fiscal year 2015, as 
compared to fiscal  year 2014.  Gross margin decreased by 0.2 percentage points to 18.4% for fiscal year 2015, as compared to 
18.6% for fiscal year 2014. The slight decrease in gross margin was primarily due to reduced average selling price as a result of 
price erosion, partially offset by the positive impact of improved factory utilization and continued cost reduction efforts during 
the fiscal year 2015. 

Research and development expenses

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

Research and development $ 26,006

(in thousands)
$ 27,075

$ 24,409

(in thousands)
(1,069)
$

45

(in percentage)

(in thousands)
2,666

(in percentage)
10.9%

(3.9)% $

 
 
 
 
 
 
Fiscal 2016 vs 2015

Research and development expenses were $26.0 million for fiscal year 2016, a decrease of $1.1 million, or 3.9%, as 
compared to $27.1 million for fiscal year 2015.  The decrease was primarily attributable to a $0.8 million decrease in product 
prototyping engineering expenses as a result of reduced engineering activities, a $0.2 million decrease in employee travel 
expenses and a $0.1 million decrease in facilities related costs as a result of continued operational and cost control efforts.  We 
continue to evaluate and invest resources in developing new technologies and products utilizing our own fabrication and 
packaging facilities.  However, we expect that our research and development expenses will fluctuate from time to time.

Fiscal 2015 vs 2014

Research and development expenses were $27.1 million for fiscal year 2015, an increase of $2.7 million, or 10.9%, as 
compared to $24.4 million for fiscal year 2014.  The increase was primarily attributable to a $3.4 million increase in product 
prototyping engineering expenses, partially offset by a $0.1 million decrease in employee compensation and benefit expenses 
primarily due to reduction of headcount and less bonus during fiscal year 2015, a $0.1 million decrease in depreciation and 
amortization expense as a result of increased fully depreciated assets, a $0.2 million decrease in facilities and utilities related 
costs primarily due to continued operational and cost control effort, and a $0.2 million decrease in legal and consulting expense 
due to reduced consulting activities. 

Selling, general and administrative expenses

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

(in thousands)

(in thousands)

(in percentage)

(in thousands)

(in percentage)

$ 37,874

$ 37,625

$ 34,554

$

249

0.7% $

3,071

8.9%

Selling, general and
administrative

Fiscal 2016 vs 2015

Selling, general and administrative expenses were $37.9 million for fiscal year 2016, an increase of $0.2 million, or 0.7%, 

as compared to $37.6 million for fiscal year 2015.  The increase was primarily due to a $1.1 million increase in employee 
compensation and benefits expense as a result of increased headcount and higher bonus expenses during current fiscal year, as 
well as a $0.1 million of long term asset write-off, partially offset by a $0.5 million decrease in depreciation and amortization 
expense as a result of certain assets being fully depreciated in fiscal year of 2016, and a $0.4 million decrease in legal expenses 
as a result of less legal consulting activities.

During the quarter ended June 30, 2016, we recognized $0.2 million of expenses related to our joint venture, including 
noncontrolling interest, in our general and administrative expenses in connection with outside profession services, travel and 
personnel and benefit related costs. 

Fiscal 2015 vs 2014

Selling, general and administrative expenses were $37.6 million for fiscal year 2015, an increase of $3.1 million, or 8.9%, 

as compared to $34.6 million for fiscal year 2014.  The increase was primarily due to a $1.8 million increase in employee 
compensation and benefits expense as a result of increased headcount during fiscal year 2015, a $1.1 million increase in share-
based compensation expense primarily as a result of an increase of stock awards granted and a decrease of cancellation during 
the fiscal year 2015, and a $0.4 million in recovery of doubtful accounts in fiscal year 2014 as a result of continued effort in 
collection from a service customer.  These increases were partially offset by a $0.3 million decrease in depreciation and 
amortization expense as a result of certain assets being fully depreciated in fiscal year of 2015.

Impairment of long-lived assets    

46

 
 
 
Year Ended June 30, 

Change

2016

2015

2014

2016

2015

(in thousands)

(in
thousands)

(in percentage)

(in
thousands)

(in
percentage)

Impairment of long-
lived assets

$

432

$

— $

— $

432

100.0% $

—

—%

During the quarter ended December 31, 2015, we identified certain manufacturing equipments purchased for projects that 

were subsequently canceled.  Because the equipments had no alternative uses, we recorded an asset impairment expense of 
approximately $0.4 million related to these equipments during the quarter ended December 31, 2015.

During the fourth quarter of fiscal year 2016 and 2015, we evaluated our amortizable intangible assets for impairment and 

determined that the related estimated undiscounted cash flows exceeded the carrying value of the intangible assets and no 
impairment charge was recorded.  During the same period, we also evaluated our goodwill for impairment and determined that 
the fair value of the reporting unit, estimated based on the market capitalization approach, was more than its carrying value and 
no impairment charge was recorded.

Interest income and other income (loss), net   

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

(in thousands)

(in thousands)

(in percentage)

(in thousands)

(in percentage)

Interest income and
other income (loss), net

$

(498) $

533

$

(177) $

(1,031)

(193.4)% $

710

(401.1)%

Interest income and other, net was primarily related to interest earned from cash and cash equivalents, as well as foreign 

exchange gains (losses).  The decrease in interest income and other in fiscal year 2016 as compared to fiscal year 2015 was 
primarily due to unrealized foreign exchange losses of $1.0 million mainly due to recent depreciation of USD against RMB.  
The increase in interest income and other in fiscal year 2015 as compared to fiscal year 2014 was primarily due to unrealized 
foreign exchange gains of $0.7 million mainly due to appreciation of USD against RMB.

Interest Expense

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

Interest expense

$

23

(in thousands)
181
$

$

266

(in thousands)
(158)
$

(in percentage)

(87.3)% $

(in thousands)
(85)

(in percentage)
(32.0)%

Interest expense was primarily related to bank borrowings.  The decrease in interest expenses in fiscal year 2016 

compared to fiscal year of 2015 was primarily due to decreases in bank borrowings related to the $20.0 million term loan 
obtained in May 2012 for our Oregon fab.  The term loan was fully repaid in May 2015.

Income tax expense

Year Ended June 30, 

Change

2016

2015

2014

2016

2015

Income tax expense

$

4,021

(in thousands)
3,897
$

$

2,769

(in thousands)
124
$

47

(in percentage)

(in thousands)
1,128

(in percentage)
40.7%

3.2% $

 
 
 
 
 
 
 
 
 
 
 
 
 
Fiscal 2016 vs 2015

Income tax expense for fiscal years 2016 and 2015 was $4.0 million and $3.9 million, respectively.  Income tax expense 
increased by $0.1 million, or 3.2%, in fiscal year 2016 as compared to fiscal year 2015 primarily due to the changes in the mix 
of earnings in various geographic jurisdictions as well as a decrease in the recognition of previously unrecognized tax benefits 
following the lapse of the applicable statue of limitations between the respective periods.

Fiscal 2015 vs 2014

Income tax expense for fiscal years 2015 and 2014 was $3.9 million and $2.8 million, respectively.  Income tax expense 

increased by $1.1 million, or 40.7%, in fiscal year 2015 as compared to fiscal year 2014 primarily due to the changes in the mix 
of earnings in various geographic jurisdictions as well as a decrease in the recognition of previously unrecognized tax benefits 
following the lapse of the applicable statue of limitations between the respective periods.

Liquidity and Capital Resources 

Our principal need for liquidity and capital resources is to maintain sufficient working capital to support our operations 
and to invest adequate capital expenditures to fuel the growth of our business.  Currently, we primarily finance our operations 
and capital expenditures through funds generated from operations.

In March 2016, we entered into the JV agreement, which the Initial Capitalization will be $330.0 million.  In July 2016, 
Chongqing Funds contributed $33.0 million to the JV Company.  Within one year from June 30,2016, we expect to contribute 
$10.0 million cash, equipments and intangible assets.  Over the long term, the JV Company expects to construct a 12-inch 
wafer fabrication facility by the Initial Capitalization.

In April 2015, our Board of Directors of the Company approved an increase in the remaining available amount under the 
Company’s share repurchase program from approximately $17.8 million to $50.0 million.  The repurchases were made from the 
open market pursuant to a pre-established Rule 10b5-1 trading plan (as amended, the "Repurchase Trading Plan") or through 
privately negotiated transactions.  The amount and timing of any repuchases depend on a number of factors, including but not 
limited to, the trading price, volume and availability of our common shares, applicable legal requirements, our business and 
financial conditions an general market environment.  There is no guarantee that any repurchases under the Program will enhance 
the value of our shares.  

In June 2015, we commenced a modified Dutch auction tender offer (the "Tender Offer") to repurchase an aggregate of 

$30.0 million of our outstanding common shares with a price range between $8.50 and $9.20 per share.  In July 2015  we 
completed the Tender Offer in which we purchased 3,296,703 shares of its common shares, at a purchase price of $9.10 per 
share, for an aggregate purchase price of $30.0 million, excluding fees and expenses relating to the Tender Offer.  These shares 
represent approximately 12.53% of the total number of the Company's common shares issued and outstanding as of June 30, 
2015.  The Tender Offer was part of the $50.0 million share repurchase program approved by the Board in April 15, 2015.  
Immediately following the completion of the Tender Offer, approximately $18.2 million remained available under the share 
repurchase program.

During fiscal year 2016 we repurchased an aggregate of 4,695,499 shares from the open market under the Repurchase 
Trading Plan for a total cost of $41.8 million, at an average price of $8.90 per share, excluding fees and related expenses of $0.3 
million.  Since the inception of the program in 2010, we repurchased an aggregate of 5,723,093 shares from the open market 
under the Repurchase Trading Plan for a total cost of $50.8 million, at an average price of $8.87 per share, excluding fees and 
related expenses of $0.3 million. No repurchased shares have been retired.  Shares repurchased are accounted for as treasury 
shares and the total cost of shares repurchased is recorded as a reduction of shareholders' equity.  As of June 30, 2016, of the 
5,723,093 repurchased shares, 71,803 shares with a weighted average repurchase price of $12.33 per share, were reissued at an 
average price of $4.28 per share for option exercises and vested restricted share units. 

 The Chinese government imposes certain currency exchange controls on cash transfers out of China.  Regulations in 
China permit foreign owned entities to freely convert the Renminbi into foreign currency for transactions that fall under the 
"current account," which includes trade related receipts and payments, and interests.  Accordingly, our Chinese subsidiaries 
may use Renminbi to purchase foreign exchange currency for settlement of such "current account" transactions without pre-
approval. 

48

 
Other transactions that involve conversion of Renminbi into foreign currency are classified as "capital account" 

transactions.  Examples of "capital account" transactions include repatriations of investments by or dividends to foreign 
owners.  Pursuant to applicable regulations, foreign-invested enterprises in China may pay dividends only out of their 
accumulated profits, if any, determined in accordance with Chinese accounting standards and regulations.  In calculating 
accumulated profits, foreign investment enterprises in China are required to allocate at least 10% of their profits each year, if 
any, to fund the equity reserve account unless the reserve has reached 50% of the registered capital of the enterprises.  "Capital 
account" transactions require prior approval from China's State Administration of Foreign Exchange (SAFE) or its provincial 
branch to convert a remittance into a foreign currency, such as U.S. dollars, and transmit the foreign currency outside of 
China. As a result of this and other restrictions under PRC laws and regulations, our China subsidiaries are restricted in their 
ability to transfer a portion of their net assets to the parent.  As of June 30, 2016 and 2015, such restricted portion amounted to 
approximately $84.2 million and $86.8 million, or 34.8% and 31.4%, of our total consolidated net assets, respectively.

We believe that our current cash and cash equivalents and cash flows from operations will be sufficient to meet our 

anticipated cash needs, including working capital and capital expenditures, for at least the next twelve months.  In the long-
term, we may require additional capital due to changing business conditions or other future developments, including any 
investments or acquisitions we may decide to pursue.  If our cash is insufficient to meet our needs, we may seek to raise 
capital through equity or debt financing.  The sale of additional equity securities could result in dilution to our shareholders.  
The incurrence of indebtedness would result in increased debt service obligations and may include operating and financial 
covenants that would restrict our operations.  We cannot be certain that any financing will be available in the amounts we need 
or on terms acceptable to us, if at all.

Cash and cash equivalents

As of June 30, 2016 and 2015, we had $87.8 million and $106.1 million of cash and cash equivalents, respectively.  Our 

cash and cash equivalents primarily consist of cash on hand and short-term bank deposits with original maturities of three 
months or less.  Of the $87.8 million and $106.1 million cash and cash equivalents, $59.6 million and $60.0 million, 
respectively, are deposited with financial institutions outside the United States.

The following table shows our cash flows from operating, investing and financing activities for the periods indicated:

Year Ended June 30,

2016

2015

2014

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

$

$

Cash flows from operating activities

40,182
(21,721)
(36,686)
(86)
(18,311) $

$

(in thousands)
27,669
$
(21,345)
(17,980)
(47)
(11,703) $

37,960
(9,191)
(3,397)
10
25,382

Net cash provided by operating activities of $40.2 million for fiscal year 2016 resulted primarily from net loss of $3.0 
million, non-cash charges of $33.0 million and net change in assets and liabilities providing net cash of $10.2 million.  The 
non-cash charges of $33.0 million included depreciation and amortization expenses of $27.3 million, share-based 
compensation expense of $4.3 million, net deferred income taxes of $0.9 million, loss on disposal of property and equipment 
of $0.1 million, and impairment of long-lived assets of $0.4 million.  The net change in assets and liabilities providing net cash 
of $10.2 million was primarily due to $12.2 million decrease in accounts receivable due to timing of billings and collection of 
payments. $3.2 million increase in accrued and other liabilities, and $1.0 million increase in income taxes payable, partially 
offset by $4.7 million increase in inventories, $1.2 million decrease in accounts payable primarily due to timing of payment, 
and $0.5 million increase in other current and long-term assets primarily due to increase in advance payments to suppliers. 

Net cash provided by operating activities of $27.7 million for fiscal year 2015 resulted primarily from net loss of $7.8 

million, non-cash charges of $32.5 million and net change in assets and liabilities providing net cash of $3.0 million.  The non-
cash charges of $32.5 million included depreciation and amortization expenses of $27.5 million, share-based compensation 
expense of $4.5 million, and net deferred income taxes of $0.8 million, partially offset by a $0.3 million of forgiveness of the 
loan from the State of Oregon and a $0.1 million of gain on disposal of property and equipment during the fiscal year 2015.  
The net change in assets and liabilities providing net cash of $3.0 million was primarily due to $2.4 million decrease in 

49

 
 
 
 
 
inventories as we reduced our inventories, $3.3 million increase in accounts payable primarily due to timing of payment, and 
$1.3 million increase in accrued and other liabilities, partially offset by $2.2 million increase in accounts receivable due to the 
timing of billings and collection of payments, $1.3 million decrease in income taxes payable, and $0.5 million increase in 
other current and long-term assets primarily due to increase in advance payments to suppliers. 

Net cash provided by operating activities of $38.0 million for fiscal year 2014 resulted primarily from net loss of $3.1 

million, non-cash charges of $31.3 million and net change in assets and liabilities providing net cash of $9.8 million.  The non-
cash charges of $31.3 million included depreciation and amortization expenses of $27.9 million, share-based compensation 
expense of $3.4 million, and net deferred income taxes of $0.6 million, partially offset by allowance for doubtful account of 
$0.4 million and gain on disposal of property and equipment of $0.2 million during the fiscal year 2014.  The net change in 
assets and liabilities providing net cash of $9.8 million was primarily due to $1.8 million decrease in inventories as we 
reduced our inventories, $2.1 million decrease in accounts receivable due to the timing of billings and collection of payments, 
$5.5 million increase in accounts payable primarily due to increase in inventory purchase and timing of payment, and $2.7 
million increase in accrued and other liabilities primarily related to employee compensation and performance bonuses, 
partially offset by $0.9 million decrease in income taxes payable, and $1.4 million increase in other current and long-term  
assets primarily due to increase in advance payments to suppliers. 

Cash flows from investing activities

Net cash used in investing activities of $21.7 million for the fiscal year 2016 was primarily attributable to $21.9 million 

purchase of property and equipment to increase our in-house production capacity.

Net cash used in investing activities of $21.3 million for the fiscal year 2015 was primarily attributable to $21.5 million 

purchase of property and equipment to increase our in-house production capacity, partially offset by $0.3 million proceeds 
from sale of certain equipment.

Net cash used in investing activities of $9.2 million for the fiscal year 2014 was primarily attributable to $9.4 million 
purchase of property and equipment to increase our in-house production capacity, partially offset by $0.2 million proceeds 
from sale of certain equipment.

Cash flows from financing activities

Net cash used in financing activities of $36.7 million for the fiscal year 2016 was primarily attributable to $42.1 million 
for repurchase of our common shares under the repurchase program, and $0.9 million in payment of capital lease obligations, 
and $1.0 million in common shares acquired to settle withholding tax related to vesting of restricted stock units, partially 
offset by a $7.4 million of proceeds from exercises of share options and issuance of shares under the ESPP.

Net cash used in financing activities of $18.0 million for the fiscal year 2015 was primarily attributable to $13.6 million 

of repayment to our borrowings, $5.8 million for repurchase of our common shares under the repurchase program, $0.5 
million in common shares acquired to settle withholding tax related to vesting of restricted stock units, and $1.1 million in 
payment of capital lease obligations, partially offset by a $3.0 million of proceeds from exercises of share options and issuance 
of shares under the ESPP.

Net cash used in financing activities of $3.4 million for the fiscal year 2014 was primarily attributable to $3.6 million of 

repayment to our borrowings, $0.9 million for repurchase of our common shares under the repurchase program, $0.3 million 
in common shares acquired to settle withholding tax related to vesting of restricted stock units, and $1.3 million in payment of 
capital lease obligations, partially offset by a $2.7 million of proceeds from exercises of share options and issuance of shares 
under the ESPP.

Contractual Obligations

Our contractual obligations as of June 30, 2016 are as follows:

50

Payments Due by Period

Less than  

More than

Total

1 year

1-3 years

3-5years

5 years

Capital leases

Operating leases

Capital commitments with respect to property and equipment

Purchase commitments with respect to inventories and research
and development

$ 2,676

$

892

$ 1,784

$ — $

(in thousands)

9,910

6,623

3,200

6,623

39,637

39,637

4,098

2,038

—

—

—

—

Total contractual obligations

$ 58,846

$ 50,352

$ 5,882

$ 2,038

$

—

574

—

—

574

As of June 30, 2016, we had recorded liabilities of $1.3 million for uncertain tax positions and $0.3 million for potential 

interest and penalties, which are not included in the above table because we are unable to reliably estimate the amount of 
payments in individual years that would be made in connection with these uncertain tax positions.

Joint Venture Commitments

In March 2016, we executed an agreement with two strategic investment funds owned by the Municipality of 
Chongqing, China to form a joint venture for a new state-of -the-art power semiconductor packaging, testing and wafer 
fabrication facility in Liangjiang New Area of Chongqing.  The Joint Venture is expected to commence its initial production in 
the first half of fiscal 2018.  Under the Joint Venture agreement, the Company is required to contribute $10.0 million in cash, 
equipments and intangible assets within one year from June 30, 2016.

Off-Balance Sheet Arrangements

As of June 30, 2016, we had no material off-balance sheet arrangements as defined in Item 303(a)(4)(ii) of Regulation S-

K.

51

 
 
 
 
 
Critical Accounting Policies and Estimates 

The preparation of our consolidated financial statements requires us to make estimates, judgments and assumptions that 

affect the reported amounts of assets, liabilities, revenue and expenses.  To the extent there are material differences between 
these estimates and actual results, our consolidated financial statements will be affected.  On an ongoing basis, we evaluate the 
estimates, judgments and assumptions including those related to revenue recognition, inventory reserves, warranty accrual, 
income taxes, share-based compensation, and useful lives for property and equipment and for goodwill and intangible assets.

Revenue recognition

We recognize revenue when there is persuasive evidence that an arrangement exists, delivery has occurred, the price to 

the buyer is fixed or determinable and when collectability is reasonably assured.  We recognize revenue when product is 
shipped to the customer, net of estimated stock rotation returns and price adjustments to certain distributors.  

We sell our products primarily to distributors, who in turn sell our products globally to various end customers.  Our 

revenue is net of the effect of the estimated stock rotation returns and price adjustments that we expect to provide to certain 
distributors.  Stock rotation returns are governed by contract and are limited to a specified percentage of the monetary value of 
the products purchased by distributors during a specified period.  We estimate provision for stock rotation returns based on 
historical returns and individual distributor agreements.  We also provide special pricing to certain distributors primarily based 
on volume, to encourage resale of our products.  We estimate the expected price adjustments at the time the revenue is 
recognized based on distributor inventory levels, pre-approved future distributor selling prices, distributor margins and 
demand for our products.  If actual stock rotation returns or price adjustments differ from our estimates, adjustments may be 
recorded in the period when such actual information is known.  Allowance for price adjustments is recorded against accounts 
receivable and provision for stock rotation is recorded in accrued liabilities on the consolidated balance sheets.  

Revenue from certain distributors is deferred until the distributor resells the products to end customers due to price 
protection adjustments and right of returns that cannot be reliably measured.  The deferred revenue, net of the associated 
deferred cost of the inventory, is recorded as deferred margin on the consolidated balance sheets.

Packaging and testing services revenue is recognized upon shipment of serviced products to the customer. 

Inventory reserves

We carry inventories at the lower of cost (determined on a first-in, first-out basis) or market value.  Cost primarily 
consists of semiconductor wafers and raw materials, labor, depreciation expenses and other manufacturing expenses and 
overhead, and packaging and testing fees paid to third parties if subcontractors are used.  Inventory reserves are made based 
on our periodic review of inventory quantities on hand as compared with our sales forecasts, historical usage, aging of 
inventories, production yield levels and current product selling prices.  If actual market conditions are less favorable than 
those forecasted by us, additional future inventory write-downs may be required that could adversely affect our operating 
results.  Inventory reserves once established are not reversed until the related inventory has been sold or scrapped.  If actual 
market conditions are more favorable than expected and the products that have previously been written down are sold, our 
gross margin would be favorably impacted. 

Product warranty 

We provide a standard one-year warranty for the products we sell.  We accrue for estimated warranty costs at the time 

revenue is recognized.  Our warranty obligation is affected by product failure rates, labor and material costs for replacing 
defective parts, related freight costs for failed parts and other quality assurance costs.  We monitor our product returns for 
warranty claims and maintain warranty reserve based on our historical experiences and anticipated warranty claims known at 
the time of estimation.  If actual warranty costs differ significantly from our estimates, revisions to the estimated warranty 
accrual would be required and any such adjustments could be material.

Accounting for income taxes

We are subject to income taxes in a number of jurisdictions.  We must make certain estimates and judgments in 
determining income tax expense for financial statement purposes.  These estimates and judgments occur in the calculation of 
tax credits, benefits and deductions, and in the calculation of certain tax assets and liabilities which arise from differences in 
the timing of recognition of revenue and expense for tax and financial statement purposes, as well as interest and penalties 
related to uncertain tax positions.  There are many transactions and calculations for which the ultimate tax determination is 
uncertain during the ordinary course of business.  We establish accruals for certain tax contingencies based on estimates of 

52

whether additional taxes may be due.  While the final tax outcome of these matters may differ from the amounts that were 
initially recorded, such differences will impact the income tax and deferred tax provisions in the period in which such 
determination is made.  As a result, significant changes to these estimates may result in an increase or decrease to our tax 
provision in a subsequent period. 

Significant management judgment is also required in determining whether deferred tax assets will be realized in full or in 

part.  When it is more likely than not that all or some portion of specific deferred tax assets such as net operating losses or 
foreign tax credit carryforwards will not be realized, a valuation allowance must be established for the amount of the deferred 
tax assets that cannot be realized.  We consider all available positive and negative evidence on a jurisdiction-by-jurisdiction 
basis when assessing whether it is more likely than not that deferred tax assets are recoverable.  We consider evidence such as 
our past operating results, the existence of cumulative losses in recent years and our forecast of future taxable income.  We 
intend to maintain a partial valuation allowance equal to the state research and development credit carryfowards until 
sufficient positive evidence exists to support reversal of the valuation allowance. 

We have not provided for withholding taxes on the undistributed earnings of our foreign subsidiaries because we intend 

to reinvest such earnings indefinitely.  As of June 30, 2016, the cumulative amount of undistributed earnings of our foreign 
subsidiaries considered permanently reinvested was $82.2 million.  The determination of the unrecognized deferred tax 
liability on these earnings is not practicable. Should we decide to remit this income to the Bermuda parent company in a future 
period, our provision for income taxes may increase materially in that period. 

The Financial Accounting Standards Board, or FASB, has issued guidance which clarifies the accounting for income 
taxes by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is 
recognized.  The minimum threshold is defined as a tax position that is more likely than not to be sustained upon examination 
by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical 
merits of the position.  The tax benefit to be recognized is measured as the largest amount of benefit that is greater than fifty 
percent likely to be realized upon ultimate settlement.  The calculation of our tax liabilities involves dealing with uncertainties 
in the application of complex tax law and regulations in a multitude of jurisdictions.  Although the guidance on the accounting 
for uncertainty in income taxes prescribes the use of a recognition and measurement model, the determination of whether an 
uncertain tax position has met those thresholds will continue to require significant judgment by management.  If the ultimate 
resolution of tax uncertainties is different from what is currently estimated, a material impact on income tax expense could 
result. 

Our provision for income taxes is subject to volatility and could be adversely impacted by changes in earnings or tax 

laws and regulations in various jurisdictions.  We are subject to the continuous examination of our income tax returns by the 
Internal Revenue Service 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.  To the 
extent that the final tax outcome of these matters is different than the amounts recorded, such differences will impact the 
provision for income taxes in the period in which such determination is made.  The provision for income taxes includes the 
impact of changes to reserves, as well as the related net interest and penalties.

Share-based compensation expense

We recognize share-based compensation expense based on the estimated fair value of the awards determined by the 
Black-Scholes option valuation model, using the accelerated vesting attribution method.  Share-based compensation expense 
is significant to the consolidated financial statements and is calculated using our best estimates, which involve inherent 
uncertainties and the application of management's judgment. 

We determined the weighted average valuation assumptions as follows:

•  Expected term is determined by using the historical data of industry peers as adjusted for expected changes in future 
exercise patterns.  Starting July 2016, expected term will be estimated using the Company’s historical exercise 
behavior and expected future exercise behavior.

• 

Forfeiture rate is estimated based on the historical average period of time that the awards were outstanding and 
forfeited.  The estimate of forfeitures is adjusted over the requisite service period to the extent that actual forfeitures 
differ, or are expected to differ, from the prior estimates.  Changes in estimated forfeitures are recognized in the 
period of change and impact the amount of stock compensation expenses to be recognized in future periods, which 
could be material if actual results differ significantly from our estimates.

53

 
 
 
•  Volatility is estimated based on combining both the Company's historical volatility and the volatility of industry peers 

over a period equivalent to the expected term of the stock awards granted.  Starting July 2016, the Company's 
publicly traded shares history will be solely used in estimating the volatility rate.

•  Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term of 

the awards granted. 

•  Dividend yield is zero as the Company has never declared or paid any dividends and currently has no intention to pay 

dividends in the foreseeable future. 

Estimated Useful Lives for Property, Plant and Equipment and Intangible Assets

Property, plant and equipment are recorded at cost and are depreciated using the straight-line method over estimated 
useful lives of the assets.  Patents and exclusive technology rights purchased from third parties are amortized on a straight-line 
basis over their estimated useful lives of three to seven years.  Trade name and customer relationships acquired in a business 
combination are recognized at fair values at the acquisition date and amortized on a straight-line basis over their estimated 
economic lives of three years and four years, respectively. 

Goodwill

Goodwill and intangible assets with indefinite useful lives are not amortized, but are tested for impairment at least 
annually, or whenever changes in circumstances indicate that the carrying amount of goodwill or intangible assets may not be 
recoverable.  These tests are performed at the reporting unit level using a two-step, fair-value based approach.  In testing for a 
potential impairment of goodwill, we first compare the carrying value of assets and liabilities to the estimated fair value.  If 
estimated fair value is less than carrying value, then potential impairment exists.  The amount of any impairment is then 
calculated by determining the implied fair value of goodwill using a hypothetical purchase price allocation, similar to that 
which would be applied if it were an acquisition and the purchase price was equivalent to fair value as calculated in the first 
step. Impairment is equivalent to any excess of goodwill carrying value over its implied fair value.  The process of evaluating 
the potential impairment of goodwill requires significant judgment at many points during the analysis, including calculating 
fair value of each reporting unit based on estimated future cash flows and discount rates to be applied.

Recently Issued Accounting Pronouncements 

See Note 1 of the Notes to the consolidated financial statements under Item 15 in this Annual Report on Form 10-K for a 
full description of recent accounting pronouncements, including the expected dates of adoption and estimated effects on results 
of operations and financial condition.

54

 
Item 7A. 

Quantitative and Qualitative Disclosures About Market Risk 

Foreign currency risk 

We and our principal subsidiaries use U.S. dollars as our functional currency because most of the transactions are 
conducted and settled in U.S. dollars.  All of our revenue and a significant portion of our operating expenses are denominated 
in U.S. dollars.  The functional currency for our in-house packaging and testing facilities in China is U.S. dollars and a 
significant portion of our capital expenditures are denominated in U.S. dollars.  However, foreign currencies are required to 
fund our overseas operations, primarily in Taiwan and China.  Operating expenses of overseas operations are denominated in 
their respective local currencies.  In order to minimize exposure to foreign currencies, we maintained cash and cash equivalent 
balances in foreign currencies, including Chinese Yuan (“RMB”) as operating funds for our foreign operating expenses.  Our 
management believes that our exposure to foreign currency translation risk is not significant based on a 10% sensitivity 
analysis in foreign currencies due to the fact that the net assets denominated in foreign currencies pertaining to foreign 
operations, principally in Taiwan and China, are not significant to our consolidated net assets. 

Commodity Price Risk

We are subject to risk from fluctuating market prices of certain commodity raw materials, particularly gold, that are used 

in our manufacturing process and incorporated into our end products.  Supplies for such commodities may from time-to-time 
become restricted, or general market factors and conditions may affect the pricing of such commodities.  Over the past few 
years, the price of gold increased significantly and certain of our supply chain partners assess surcharges to compensate for the 
rising commodity prices.  We have been converting some of our products to use copper wires instead of gold wires.  Our results 
of operations may be materially and adversely affected if we have difficulty obtaining these raw materials, the quality of 
available raw materials deteriorates, or there are significant price changes for these raw materials.  For periods in which the 
prices of these raw materials are rising, we may be unable to pass on the increased cost to our customers which would result in 
decreased margins for the products in which they are used and could have a material adverse effect on our net earnings.  We 
also may need to record losses for adverse purchase commitments for these materials in periods of declining prices.  We do not 
enter into formal hedging arrangements to mitigate against commodity risk.  We estimate that a 10% increase or decrease in the 
costs of raw materials subject to commodity price risk, such as gold, would decrease or increase our current year's net earnings 
by $0.7 million, assuming that such changes in our costs have no impact on the selling prices of our products and that we have 
no pending commitments to purchase metals at fixed prices.

55

 
 
Item 8. 

Financial Statements and Supplementary Data 

See Part IV, Item 15 "Exhibits and Financial Statement Schedules" for our consolidated financial statements and the notes 

and schedules thereto filed as part of this annual report. 

 Selected Quarterly Consolidated Financial Data 

The following tables present our unaudited consolidated financial information for each of the eight quarters in the period 
ended June 30, 2016.  Net income per share for the four quarters of each fiscal year may not sum to the total for the fiscal year 
because of difference in the number of shares outstanding during each period.  The operating results for any quarter should not 
be relied upon as necessarily indicative of results for any future period.  We expect our quarterly operating results to fluctuate 
in future periods due to a variety of reasons, including those discussed in Item 1A. “Risk Factors.” 

Revenue
Gross profit
Operating income (loss)

Net income (loss)
Net income (loss) per share

Basic
Diluted

Revenue

Gross profit

Operating loss

Net income (loss)

Net income (loss) per share

Basic

Diluted

June 30,
2016

March 31,
2016

December 31,
2015

September 30,
2015

Quarter Ended  

91,410
19,470
2,554

1,921

0.08
0.08

(in thousands, except per share data)

$
$
$

$

$
$

82,987
16,319

(171) (1)

(1,263)

(0.06)
(0.06)

$
$
$

$

$
$

79,825
14,972

(273) (1)

(1,611)

(0.07)
(0.07)

$
$
$

$

$
$

81,439
15,061

(600) (1)

(1,975)

(0.09)
(0.09)

Quarter Ended  

June 30,
2015

March 31,
2015

December 31,
2014

September 30,
2014

(in thousands, except per share data)

81,472

14,316

(2,105) (1)

(2,925) (2)

(0.11) (2)

(0.11) (2)

$

$

$

$

$

$

76,918

12,764
(3,521) (1)
(4,105) (2)

(0.16)
(0.16)

$

$

$

$

$

$

81,328

15,242

(331) (1)
(1,297) (2)

(0.05)
(0.05)

$

$

$

$

$

$

88,217

18,160

1,739 (1)

564 (2)

0.02

0.02

$
$
$

$

$
$

$

$

$

$

$

$

In this Annual Report on Form 10-K, certain prior year financial information has been reclassified. The Company 

(1) 
reclassified realized and unrealized foreign currency gains and losses from operating income (loss) to interest income and other 
income (loss), net. The reclassification resulted in an increase in operating loss of $122,000, a decrease in operating loss of 
$325,000 and  a decrease in operating loss of $162,000 for the quarter ended March 31, 2016, December 31, 2015 and 
September 30, 2015, respectively. The reclassification also resulted in an increase in operating loss of $261,000, $137,000, 
$8,000 and a decrease in operating income of $21,000 for the quarter ended June 30, 2015, March 31, 2015, December 31, 
2014 and September 30, 2014, respectively. 

(2)   In this Annual Report on Form 10-K, certain prior year financial information has been restated due to an accounting 
correction.  During the quarter ended March 31, 2016, the Company identified and recorded immaterial errors related to the 
fiscal years ended June 30, 2015, 2014 and 2013.  The immaterial errors resulted from overstatement of long-term deferred 
income tax liabilities and income tax expenses.  The overall impact of the errors on the Company's consolidated financial 
position and results of operations is not material and as such, previously filed Annual Reports on Form 10-K for the years 
affected by the errors have not been amended. The adjustments resulted in a decrease in net loss of $172,000 and a decrease in 
basic and diluted net loss per common share of $0.01 for the quarter ended June 30, 2015.

56

 
The following table present the effects of adjustments made to our previously reported consolidated quarterly financial 
information for the quarter ended June 30, 2015. For further information regarding these adjustment, see Note 1 of this Form 
10-K.

Quarter Ended
June 30, 2015
(As previously
reported)

Adjustment

Quarter Ended
June 30, 2015
(As re-stated)

Revenue

Gross profit

Operating loss

Net income (loss)

Net income (loss) per share

Basic

Diluted

$

$

$

$

$

$

81,472

14,316

$

$

(1,844) $

(3,097) $

(0.12) $

(0.12) $

— $

— $

— $

172

0.01

0.01

$

$

$

81,472

14,316
(2,105)
(2,925)

(0.11)
(0.11)

Item 9. 

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 

Not applicable. 

Item 9A. 

Controls and Procedures 

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the 

effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities 
Exchange Act of 1934, as amended, (the “Exchange Act”)), as of the end of the period covered by this report.  Based on that 
evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of 
June 30, 2016 have been designed and are functioning effectively to provide reasonable assurance that the information required 
to be disclosed in the 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, or persons performing similar functions, 
as appropriate to allow timely decisions regarding required disclosure. 

Management's Annual Report on Internal Control over Financial Reporting

Our management, including our Chief Executive Officer and Chief Financial Officer, is responsible for establishing and 

maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rule 13a-15(f) and Rule 
15d-15(f).  Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the 
reliability of financial reporting and the preparation of our financial statements for external purposes in accordance with 
generally accepted accounting principles, and 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 our assets; (2) provide 
reasonable assurance that transactions are recorded to permit preparation of financial statements in accordance with generally 
accepted accounting principles, and that our receipts and expenditures are made only in accordance with authorizations of our 
management and directors; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized 
acquisition, use or disposition of our assets that could have a material effect on our financial statements.

  The effectiveness of the Company's internal control over financial reporting as of June 30, 2016 has been audited by 

Grant Thornton LLP, an independent registered public accounting firm, as stated in their report, included on the following page. 

Limitation on the Effectiveness of Controls 

While our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable 
assurance that their respective objectives will be met, we do not expect that our disclosure controls and procedures or our internal 
control over financial reporting are or will be capable of preventing or detecting all errors and all fraud.  Any control system, no 
matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system's objectives 
will be met. 

57

 
 
 
 
 
Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2016

that have materially affected or are reasonably likely to materially affect, our internal control over financial reporting.

58

 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

Board of Directors and Stockholders 
Alpha and Omega Semiconductor Limited

We have audited the internal control over financial reporting of Alpha and Omega Semiconductor Limited (a Bermuda 
corporation) and subsidiaries (the “Company”) as of June 30, 2016, based on criteria established in the 2013 Internal Control-
Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). 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 Annual Report on 
Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over 
financial reporting based on our audit.

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

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

In our opinion, Alpha and Omega Semiconductor Limited and subsidiaries maintained, in all material respects, effective 
internal control over financial reporting as of June 30, 2016, based on criteria established in the 2013 Internal Control-
Integrated Framework issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
the consolidated financial statements of the Company as of and for the year ended June 30, 2016, and our report dated 
August 26, 2016 expressed an unqualified opinion on those consolidated financial statements and schedules.

/s/ GRANT THORNTON LLP 

San Francisco, California 
August 26, 2016 

59

 
Table of Contents

Item 9B. 

Other Information 

None

60

PART III

Certain information required by Part III is omitted from this Annual Report on Form 10-K because we intend to file our 

definitive proxy statement for our next annual general meeting of shareholders, pursuant to Regulation 14A of the Securities 
Exchange Act of 1934, as amended (the “2016 Proxy Statement”), no later than 120 days after the end of fiscal year 2016, and 
certain information to be included in the 2016 Proxy Statement is incorporated herein by reference. 

Item 10. 

Directors, Executive Officers and Corporate Governance 

The information required by this item concerning our directors, executive officers, Section 16 compliance and corporate 

governance matters is contained in part under the caption "Business - Executive Officers" in Part I of this report, and the 
remainder is incorporated by reference to the information set forth in the sections titled “Election of Directors” and “Section 16
(a) Beneficial Ownership Reporting Compliance” in the 2016 Proxy Statement.

Item 11. 

Executive Compensation 

The information required by this item regarding executive compensation is incorporated by reference from the 

information set forth under the captions “Compensation of Non-Employee Directors” and “Executive Compensation,” in the 
2016 Proxy Statement.

Item 12. 

Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 

The information required by this item regarding security ownership of certain beneficial owners and management is 

incorporated by reference to the information set forth in the section titled “Security Ownership of Certain Beneficial Owners 
and Management” and “Equity Compensation Plan Information” in the 2016 Proxy Statement.

Item 13. 

Certain Relationships and Related Transactions, and Director Independence 

The information required by this item regarding related party transactions and director independence is incorporated by 
reference from the information set forth under the captions “Board of Directors and Committees of the Board", and “Related 
Party Transactions" in the 2016 Proxy Statement.

Item 14. 

Principal Accounting Fees and Services 

The information required by this item regarding principal accountant fees and services  is incorporated by reference from 

the information set forth under the caption “Principal Accounting Fees and Services” in the 2016 Proxy Statement.

61

 
 
 
Item 15. 

Exhibits and Financial Statement Schedules 

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

PART IV

(1) Consolidated Financial Statements.  The index to the consolidated financial statements is below. 

Item

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets

Consolidated Statements of Operations

Consolidated Statements of Comprehensive Loss

Consolidated Statements of Equity

Consolidated Statements of Cash Flows

Notes to the Consolidated Financial Statements

(2) Financial Statement Schedules.

Schedule I - Condensed Financial Information of Registrant

Schedule II - Valuation and Qualifying accounts

(b) Exhibits

Page 
63

64

65

66

67

68

70

96

101

The exhibits listed on the accompanying Index to Exhibits in Item 15(b) below are filed as part of, or hereby 

incorporated by reference into, this Annual Report on Form 10-K.

62

 
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

Board of Directors and Stockholders 
Alpha and Omega Semiconductor Limited

We have audited the accompanying consolidated balance sheets of Alpha and Omega Semiconductor Limited (a Bermuda 
corporation) and subsidiaries (the “Company”) as of June 30, 2016 and 2015, and the related consolidated statements of 
operations, comprehensive income (loss), equity, and cash flows for each of the three years in the period ended June 30, 2016. 
Our audits of the basic consolidated financial statements included the financial statement schedules listed in the index 
appearing under Item 15(a)(2). These financial statements and financial statement schedules are the responsibility of the 
Company’s management. Our responsibility is to express an opinion on these financial statements and financial statement 
schedules 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, the consolidated financial statements referred to above present fairly, in all material respects, the financial 
position of Alpha and Omega Semiconductor Limited as of June 30, 2016 and 2015, and the results of their operations and their 
cash flows for each of the three years in the period ended June 30, 2016 in conformity with accounting principles generally 
accepted in the United States of America. Also in our opinion, the related financial statement schedules, when considered in 
relation to the basic consolidated financial statements take as a whole, present fairly, in all material respects, the information set 
forth therein. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
the Company’s internal control over financial reporting as of June 30, 2016, based on criteria established in the 2013 Internal 
Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO), 
and our report dated August 26, 2016 expressed an opinion on the effectiveness of the Company’s internal controls over 
financial reporting.

/s/ GRANT THORNTON LLP 

San Francisco, California 
August 26, 2016 

63

 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED
CONSOLIDATED BALANCE SHEETS
(in thousands except par value per share)

ASSETS

June 30,  

2016

2015

Current assets:

Cash and cash equivalents
Restricted cash
Accounts receivable, net
Inventories
Other current assets

Total current assets
Property, plant and equipment, net
Deferred income tax assets - long term
Other long-term assets

Total assets

LIABILITIES AND EQUITY

Current liabilities:

Accounts payable
Accrued liabilities
Income taxes payable
Deferred margin
Capital leases

Total current liabilities

Income taxes payable - long term
Deferred income tax liabilities
Other long term liabilities

Total liabilities

Commitments and contingencies (Note 13)
Equity:

Preferred shares, par value $0.002 per share:

Authorized: 10,000 shares; Issued and outstanding: none at June 30, 2016 and 2015

Common shares, par value $0.002 per share:

Authorized: 50,000 shares; Issued and outstanding: 28,405 shares and 22,754 shares
at June 30, 2016 and 27,314 shares and 26,316 shares at June 30, 2015

Treasury shares at cost; 5,651 shares at June 30, 2016 and 998 shares at June 30, 2015
Additional paid-in capital
Accumulated other comprehensive income
Retained earnings

Total Alpha and Omega Semiconductor Limited shareholders’ equity

Noncontrolling interest

 Total equity

Total liabilities and equity

$

$

$

$

$

$

87,774
188
26,594
68,848
4,526
187,930
116,084
12,132
2,359
318,505

42,718
22,590
2,356
997
819
69,480
1,577
2,973
2,436
76,466

—

57

(50,199)
191,444
769
100,071
242,142
(103)
242,039

$

318,505

$

106,085
368
38,781
64,175
4,279
213,688
119,579
12,340
2,297
347,904

44,083
19,225
1,372
716
941
66,337
1,601
2,310
1,017
71,265

—

55

(8,593)
181,040
905
103,232
276,639
—

276,639

347,904

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

64

 
 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED
CONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands, except per share data)

Revenue
Cost of goods sold
Gross profit

Operating expenses:

Research and development
Selling, general and administrative
Impairment of long-lived assets

Total operating expenses

Operating income (loss)

Interest income and other income (loss), net
Interest expense
Income (loss) before income taxes
Income tax expense
Net loss including noncontrolling interest
Net loss attributable to noncontrolling interest

Net loss attributable to Alpha and Omega Semiconductor Limited

Net loss per common share attributable to Alpha and Omega
Semiconductor Limited

Basic
Diluted

Weighted average number of common share attributable to Alpha and
Omega Semiconductor Limited used to compute net loss per share:

Basic
Diluted

$

$
$

Year Ended June 30, 

$

$

2016
335,661
269,839
65,822

$

2015
327,935
267,453
60,482

2014
318,121
259,050
59,071

26,006
37,874
432
64,312
1,510

(498)
(23)
989
4,021
(3,032)
(104)
(2,928) $

27,075
37,625
—
64,700
(4,218)

533
(181)
(3,866)
3,897
(7,763)
—
(7,763) $

24,409
34,554
—
58,963
108

(177)
(266)
(335)
2,769
(3,104)
—
(3,104)

(0.13) $
(0.13) $

(0.29) $
(0.29) $

(0.12)
(0.12)

22,452
22,452

26,429
26,429

25,952
25,952

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

65

 
 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
(in thousands) 

Net loss including noncontrolling interest

Other comprehensive income, net of tax

Foreign currency translation adjustment

Comprehensive loss

     Noncontrolling interest

Year ended June 30,

2016

2015

2014

$

(3,032) $

(7,763) $

(3,104)

(135)
(3,167)
(103)

(128)
(7,891)
—

76
(3,028)
—

Comprehensive loss attributable to Alpha and Omega Semiconductor
Limited

$

(3,064) $

(7,891) $

(3,028)

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

66

ALPHA AND OMEGA SEMICONDUCTOR LIMITED
CONSOLIDATED STATEMENTS OF EQUITY 
(in thousands) 

Balance, June 30, 2013

— $

— 25,882

$

51

(226)

$ (2,054)

$

168,352

$

957

$ 114,294

$

281,600

$

— $

281,600

Convertible
Preferred Shares

Common Shares

Treasury Stock

Shares

Amount

Shares

Amount

Shares

Amount

Additional
Paid-In
Capital

Accumulated
Other
Comprehensive
Income

Retained
Earnings

Total AOS 
Shareholders' 
Equity

Noncontrolling 
Interest

Total Equity

Exercise of common stock options and
release of RSUs

Reissuance of treasury stock upon exercise of
common stock options and release of RSUs

Withholding tax on restricted stock units

Issuance of common shares under Employee
Stock Purchase Plan

Repurchase of common shares under shares
repurchase program

Share-based compensation expense

Net loss including noncontrolling interest

Cumulative translation adjustment

Balance, June 30, 2014

Exercise of common stock options and
release of RSUs

Reissuance of treasury stock upon exercise of
common stock options and release of RSUs

Withholding tax on restricted stock units

Issuance of common shares under Employee
Stock Purchase Plan

Repurchase of common shares under shares
repurchase program

Share-based compensation expense

Net loss including noncontrolling interest

Cumulative translation adjustment

Balance, June 30, 2015

Exercise of common stock options and
release of RSUs

Reissuance of treasury stock upon exercise of
common stock options and release of RSUs

Withholding tax on restricted stock units

Issuance of common shares under Employee
Stock Purchase Plan

Repurchase of common shares under shares
repurchase program

Share-based compensation expense

Net loss including noncontrolling interest

Cumulative translation adjustment

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

552

—

(41)

251

—

—

—

—

— 26,644

—

—

—

—

—

—

—

—

475

—

(61)

256

—

—

—

—

— 27,314

—

—

—

—

—

—

—

—

926

—

(93)

258

—

—

—

—

Balance, June 30, 2016

— $

— 28,405

$

1

—

—

1

—

—

—

—

53

1

—

—

1

—

—

—

—

55

1

—

—

1

—

—

—

57

—

6

—

—

—

83

—

—

(120)

(918)

—

—

—

—

—

—

1,098

—

(316)

1,575

—

3,375

—

—

—

—

—

—

—

—

—

76

—

(83)

—

—

—

—

(3,104)

—

1,099

—

(316)

1,576

(918)

3,375

(3,104)

76

(340)

(2,889)

174,084

1,033

111,107

283,388

—

8

—

—

—

112

—

—

(666)

(5,816)

—

—

—

—

—

—

1,408

—

(539)

1,597

—

4,490

—

—

—

—

—

—

—

—

—

(128)

—

1,409

(112)

—

—

—

—

(7,763)

—

—

(539)

1,598

(5,816)

4,490

(7,763)

(128)

(998)

(8,593)

181,040

905

103,232

276,639

—

42

—

—

—

475

—

—

—

—

—

—

—

—

5,329

—

(1,036)

1,798

—

4,313

—

—

—

—

—

—

—

—

—

(136)

—

(233)

—

—

—

—

(2,928)

—

5,330

242

(1,036)

1,799

(42,081)

4,313

(2,928)

(136)

— (4,695)

(42,081)

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

(104)

1

1,099

—

(316)

1,576

(918)

3,375

(3,104)

76

283,388

1,409

—

(539)

1,598

(5,816)

4,490

(7,763)

(128)

276,639

5,330

242

(1,036)

1,799

(42,081)

4,313

(3,032)

(135)

(5,651)

$(50,199)

$

191,444

$

769

$ 100,071

$

242,142

$

(103)

$

242,039

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

67

 
 
 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Cash flows from operating activities

Net loss including noncontrolling interest

Adjustments to reconcile net loss to net cash provided by operating
activities:

Depreciation and amortization

Allowance for doubtful accounts

Share-based compensation expense

Deferred income taxes, net

(Gain) loss on disposal of property and equipment

Impairment of long-lived assets

Government grant via forgiven loan

Changes in assets and liabilities:

Accounts receivable
Inventories

Other current and long-term assets

Accounts payable

Income taxes payable

Accrued and other liabilities

Net cash provided by operating activities

Cash flows from investing activities

Purchase of property and equipment

Proceeds from sale of property and equipment

(Increase) decrease in restricted cash

Net cash used in investing activities

Cash flows from financing activities

Withholding tax on restricted stock units

Proceeds from exercise of stock options and ESPP

Payment for repurchase of common shares

Repayments of borrowings

Principal payments on capital leases

Net cash used in financing activities

Effect of exchange rate changes on cash and cash equivalents

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of year

Cash and cash equivalents at end of year

Year Ended June 30,

2016

2015

2014

$

(3,032) $

(7,763) $

(3,104)

27,303

—

4,313

871

95

432

—

12,187
(4,674)
(310)
(1,162)
960

3,199
40,182

(21,901)
—

180
(21,721)

(1,036)
7,371
(42,081)
—

(940)
(36,686)
(86)
(18,311)
106,085

27,547

—

4,490

785
(103)
—
(250)

(2,247)
2,386
(517)
3,335
(1,276)
1,282
27,669

(21,492)
272
(125)
(21,345)

(539)
3,007
(5,816)
(13,571)

(1,061)
(17,980)
(47)
(11,703)
117,788

27,876
(363)
3,375

574
(160)
—

—

2,126
1,779
(1,429)
5,517
(916)
2,685
37,960

(9,395)
244
(40)
(9,191)

(316)
2,675
(918)
(3,571)

(1,267)
(3,397)
10

25,382

92,406

$

87,774

$

106,085

$

117,788

68

ALPHA AND OMEGA SEMICONDUCTOR LIMITED
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Supplemental disclosures of cash flow information:

Cash paid for interest

Cash paid for income taxes

Supplemental disclosures of non-cash investing and financing
information:

Property and equipment purchased but not yet paid

Property and equipment acquired under capital leases

Reissuance of Treasury Stock

Year Ended June 30,

2016

2015

2014

$

$

$

$

$

9

3,139

5,711

2,449

233

$

$

$

$

$

171

4,813

$

$

304

2,585

5,728

$

— $

112

$

3,390

1,921

83

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

69

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS 

1. The Company and Significant Accounting Policies 

The Company 

Alpha and Omega Semiconductor Limited and its subsidiaries (the “Company”, "AOS", "we" or "us") design, develop 
and supply a broad range of power semiconductors.  The Company's portfolio of products targets high-volume applications, 
including personal computers, flat panel TVs, LED lighting, smart phones, battery packs, consumer and industrial motor 
controls and power supplies for TVs, computers, servers and telecommunications equipment.  The Company conducts its 
operations primarily in the United States of America (“USA”), Hong Kong, China, Taiwan, Korea and Japan.

Basis of Preparation

The consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries, and a 
subsidiary in which it has a controlling interest after elimination of inter-company balances and transactions.  The consolidated 
financial statements have been prepared in conformity with accounting principles generally accepted in the United States of 
America ("U.S. GAAP"). 

Reclassification

The Company has reclassified certain amounts previously reported in its financial statements to conform to the current 

presentation.  These reclassifications did not have a material impact on our consolidated financial statements.

Correction of Errors

In this Annual Report on Form 10-K, certain prior year financial information has been restated due to an accounting 

correction.  During the quarter ended March 31, 2016, the Company identified and recorded immaterial errors related to the 
fiscal years ended June 30, 2015, 2014 and 2013.  The immaterial errors resulted from overstatement of long-term deferred 
income tax liabilities and income tax expenses.  The overall impact of the errors on the Company's consolidated financial 
position and results of operations is not material and as such, previously filed Annual Reports on Form 10-K for the years 
affected by the errors have not been amended.

 The adjustments resulted in a decrease in net loss of $172,000, $204,000 and $149,000 for the years ended June 30, 
2015, 2014 and 2013, respectively and a decrease in basic and diluted net loss per common share of $0.01 for the years ended 
June 30, 2015, 2014 and 2013.  The impact to the consolidated balance sheets as of June 30, 2015, 2014 and 2013 was a 
decrease in deferred income tax liabilities of $525,000, $353,000 and $149,000, respectively and an increase in retained 
earnings by the same amounts. 

Use of Estimates

The preparation of our consolidated financial statements in conformity with U.S. GAAP requires the Company to make 

estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. To the extent 
there are material differences between these estimates and actual results, the Company's consolidated financial statements will 
be affected.  On an ongoing basis, the Company evaluates the estimates, judgments and assumptions including those related to 
stock rotation returns, price adjustments, allowance for doubtful accounts, inventory reserves, warranty accrual, income taxes, 
share-based compensation, and useful lives for property, plant and equipment and intangible assets.

Foreign Currency Transactions and Translation 

Most of the Company's principal subsidiaries use U.S. dollars as their functional currency because their transactions are 
primarily conducted and settled in U.S. dollars.  All of their revenues and a significant portion of their operating expenses are 
denominated in U.S. dollars.  The functional currencies for the Company's in-house packaging and testing facilities in China 
are U.S. dollars, and a significant majority of their capital expenditures are denominated in U.S. dollars.  Foreign currency 
transactions are translated into the functional currencies using the exchange rates prevailing at the dates of the transactions. 
Foreign exchange gains and losses, resulting from the settlement of such transactions and from the remeasurement of monetary 

70

 
assets and liabilities denominated in foreign currencies using exchange rates at balance sheet date and non-monetary assets and 
liabilities using historical exchange rates, are recognized in the consolidated statements of operations. 

For the Company's subsidiaries which use the local currency as their functional currency, their results and financial 
position are translated into U.S. dollars using exchange rates at balance sheet dates for assets and liabilities and using average 
exchange rates for income and expenses items.  The resulting translation differences are presented as a separate component of 
accumulated other comprehensive income (loss) and noncontrolling interest in the consolidated statements of equity.

Cash and Cash Equivalents 

Cash and cash equivalents primarily consist of cash on hand and short-term bank deposits with original maturities of 
three months or less.  Cash equivalents are highly liquid investments with stated maturities of three months or less as of the 
dates of purchase.  The carrying amounts reported for cash and cash equivalents are considered to approximate fair values 
based upon their short maturities.  

Cash and cash equivalents are maintained with reputable major financial institutions.  If, due to current economic 

conditions or other factors, one or more of the financial institutions with which the Company maintains deposits fails, the 
Company's cash and cash equivalents may be at risk.  Deposits with these banks may exceed the amount of insurance provided 
on such deposits; however, these deposits typically may be redeemed upon demand and, therefore, bear minimal risk.

Accounts Receivable 

The allowance for doubtful accounts is based on assessment of the collectibility of accounts receivable from customers. 
The Company reviews the allowance by considering factors such as historical collection experience, credit quality, age of the 
accounts receivable balances and current economic conditions that may affect a customer's ability to pay.  The Company writes 
off a receivable and charges against its recorded allowance when it has exhausted its collection efforts without success. 

Fair Value Measurements

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) 
in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on 
the measurement date.  Valuation techniques used to measure fair value must maximize the use of observable inputs and 
minimize the use of unobservable inputs.  The fair value hierarchy is based on three levels of inputs, of which the first two are 
considered observable and the last unobservable, that may be used to measure fair value, which are the following: 

• 

• 

• 

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

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

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

Fair Value of Financial Instruments

The fair value of cash equivalents are based on observable market prices and have been categorized in Level 1 in the fair 
value hierarchy.  Cash equivalents consist primarily of short term bank deposits.  The carrying values of financial instruments 
such as cash and cash equivalents, accounts receivable and accounts payable approximate their carrying values due to their 
short-term maturities.  The carrying value of the company's debt is considered a reasonable estimate of fair value which is 
estimated by considering the current rates available to the Company for debt of the same remaining maturities, structure and 
terms of the debts.

Inventories 

The Company carries inventories at the lower of cost (determined on a first-in, first-out basis) or market value.  Cost 
includes semiconductor wafer and raw materials, labor, depreciation expenses and other manufacturing expenses and overhead, 
and packaging and testing fees paid to third parties if subcontractors are used. Inventory reserves are made based on the 
Company's periodic review of inventory quantities on hand as compared with its sales forecasts, historical usage, aging of 
inventories, production yield levels and current product selling prices.  If actual market conditions are less favorable than those 

71

 
 
forecasted by management, additional future inventory write-downs may be required that could adversely affect the Company's 
operating results.  Inventory reserves once established are not reversed until the related inventory has been sold or scrapped.  

Property, Plant and Equipment 

 Property, plant and equipment are stated at historical cost less accumulated depreciation.  Historical cost includes 
expenditures that are directly attributable to the acquisition of the items and the costs incurred to make the assets ready for their 
intended use.  

Depreciation is provided for on a straight-line basis over the estimated useful lives of the related assets as follows:

Building
Manufacturing machinery and equipment
Equipment and tooling
Computer equipment and software
Office furniture and equipment

Leasehold improvements

20 years
3 to 10 years
5 years
3 to 5 years
5 years
2  to 15 years based on shorter of expected economic
useful life or the lease term

Equipment and construction in progress represent equipment received but necessary installation has not been fully 
performed or leasehold improvements have been started but not yet completed.  Equipment and construction in progress are 
stated at cost and transferred to respective asset class when fully completed and ready for their intended use.

Internal-use software development costs are capitalized to the extent that the costs are directly associated with the 
development of identifiable and unique software products controlled by the Company that will probably generate economic 
benefits beyond one year.  Costs incurred during the application development stage are required to be capitalized.  The 
application development stage is characterized by software design and configuration activities, coding, testing and installation. 
Training costs and maintenance are expensed as incurred, while upgrades and enhancements are capitalized if it is probable that 
such expenditures will result in additional functionality.  Costs included employee costs incurred and fees paid to outside 
consultants for the software development and implementation.  Internal developed software is amortized over its estimated 
useful life of five years starting from the date when it is ready for its intended use. 

Gains and losses on disposals are determined by comparing the proceeds with the carrying amount and are recognized as 

selling, general and administrative expenses in the consolidated statements of operations.  Costs of maintenance and repairs 
that do not improve or extend the lives of the respective assets are expensed as incurred.

Impairment of Long-Lived Assets

Long-lived assets or asset groups are reviewed for impairment whenever events or changes in circumstances indicate that 

the carrying amount of an asset might not be recoverable.  Factors that would necessitate an impairment assessment include a 
significant decline in the observable market value of an asset, a significant change in the extent or manner in which an asset is 
used, or any other significant adverse change that would indicate that the carrying amount of an asset or group of assets may 
not be recoverable.  Where such factors indicate potential impairment, the recoverability of an asset or asset group is assessed 
by determining if the carrying value of the asset or asset group exceeds the sum of the projected undiscounted cash flows 
expected to result from the use and eventual disposition of the assets over the remaining economic life.  The impairment loss is 
measured based on the difference between the carrying amount and estimated fair value.

Goodwill 

Goodwill and intangible assets with indefinite useful lives are not amortized, but are tested for impairment at least 
annually, or whenever changes in circumstances indicate that the carrying amount of goodwill or intangible assets may not be 
recoverable.  These tests are performed at the reporting unit level using a two-step, fair-value based approach.  In testing for a 
potential impairment of goodwill, the Company first compares the carrying value of assets and liabilities to the estimated fair 
value.  If estimated fair value is less than carrying value, then potential impairment exists.  The amount of any impairment is 
then calculated by determining the implied fair value of goodwill using a hypothetical purchase price allocation, similar to that 
which would be applied if it were an acquisition and the purchase price was equivalent to fair value as calculated in the first 
step.  Impairment is equivalent to any excess of goodwill carrying value over its implied fair value. 

72

    
The process of evaluating the potential impairment of goodwill requires significant judgment at many points during the 
analysis, including calculating fair value of each reporting unit based on estimated future cash flows and discount rates to be 
applied.  The Company re-evaluates its intangible assets and goodwill for impairment during the fourth quarter of fiscal year.  
Goodwill is recorded in other long-term assets in the Company's consolidated balance sheets.

 Intangible Assets 

Intangible assets are stated at cost less accumulated amortization.  Intangible assets include patents and exclusive 
technology rights, trade names and customer relationships.  Intangible assets with finite lives are amortized on a straight-line 
basis over the estimated periods of benefit, as follows: 

Patents and exclusive technology rights

3 to 7 years

Trade name

Customer relationships

3 years

4 years

The Company evaluates its finite-lived intangible assets for impairment whenever events or changes in circumstances 

indicate that the carrying amount of such assets may not be recoverable.  Recoverability of assets to be held and used is 
measured by a comparison of the carrying amount of an asset group to future undiscounted net cash flows expected to be 
generated by the asset group.  If such assets are considered to be impaired, the impairment to be recognized is measured by the 
amount by which the carrying amount of the assets exceeds the fair value of the assets.  Assets to be disposed of are reported at 
the lower of the carrying amount and fair value less costs to sell.  Intangible assets are recorded in other long-term assets in the 
Company's consolidated balance sheets.

Joint Venture

In March 2016, the Company executed an agreement with two strategic investment funds owned by the Municipality of 

Chongqing, China to form a joint venture for a new state-of-the-art power semiconductor packaging, testing and wafer 
fabrication facility in Liangjiang New Area of Chongqing (the "Joint Venture").  The initial capitalization of the Joint Venture 
under the agreement is $330.0 million, which includes cash contribution from the Chongqing funds and contributions of cash, 
equipments and intangible assets from the Company.  The Company owns 51% and the Chongqing funds owns 49% of the 
equity interest of the Joint Venture.  The Joint Venture is accounted under the provisions of the consolidation guidance since the 
Company has controlling financial interest.

Revenue Recognition 

The Company recognizes revenue when there is persuasive evidence that an arrangement exists, delivery has occurred, 

the price to the buyer is fixed or determinable and when collectability is reasonably assured.  The Company recognizes revenue 
when product is shipped to the customer, net of estimated stock rotation returns and price adjustments that it expects to provide 
to certain distributors.  

The Company sells its products primarily to distributors, who in turn sell the products globally to various end customers. 

The Company allows stock rotation returns from certain distributors.  Stock rotation returns are governed by contract and are 
limited to a specified percentage of the monetary value of products purchased by distributors during a specified period.  The 
Company records an allowance for stock rotation returns based on historical returns and individual distributor agreements.  The 
Company also provides special pricing to certain distributors, primarily based on volume, to encourage resale of the Company's 
products.  The Company estimates the expected price adjustments at the time revenue is recognized based on distributor 
inventory levels, pre-approved future distributor selling prices, distributor margins and demand for its products.  If actual stock 
rotation returns or price adjustments differ from their estimates, adjustments are recorded in the period when the actual 
information is known.  Allowance for price adjustments is recorded against accounts receivable and the provision for stock 
rotation rights is included in accrued liabilities on the consolidated balance sheets. 

Revenue from certain distributors is deferred until the distributor resells the products to end customers due to price 
protection adjustments and right of returns that cannot be reliably measured.  The deferred revenue, net of the associated 
deferred cost of the inventory, is recorded as deferred margin on the consolidated balance sheets.

Packaging and testing services revenue is recognized upon shipment of serviced products to the customer. 

Product Warranty

73

The Company provides a standard one-year warranty for the products it sells.  The Company accrues for estimated 
warranty costs at the time revenue is recognized.  The Company's warranty obligation is affected by product failure rates, labor 
and material costs for replacing defective parts, related freight costs for failed parts and other quality assurance costs.  The 
Company monitors its product returns for warranty claims and maintains warranty reserves based on historical experiences and 
anticipated warranty claims known at the time of estimation.

Shipping and Handling Costs

Shipping and handling costs are included in cost of goods sold.

Research and Development 

Research and development costs are expensed as incurred. 

Provision for Income Taxes 

Income tax expense or benefit is based on income or loss before taxes.  Deferred tax assets and liabilities are recognized 
principally for the expected tax consequences of temporary differences between the tax basis of assets and liabilities and their 
reported amounts.

The Company is subject to income taxes in a number of jurisdictions.  Significant judgment is required in determining the 
worldwide provision for income taxes. There are many transactions and calculations for which the ultimate tax determination is 
uncertain during the ordinary course of business.  The Company establishes accruals for certain tax contingencies based on 
estimates of whether additional taxes may be due.  While the final tax outcome of these matters may differ from the amounts 
that were initially recorded, such differences will impact the income tax and deferred tax provisions in the period in which such 
determination is made.

Significant management judgment is also required in determining whether deferred tax assets will be realized in full or in 

part. When it is more likely than not that all or some portion of specific deferred tax assets such as net operating losses or 
research and experimentation tax credit carryforwards will not be realized, a valuation allowance must be established for the 
amount of the deferred tax assets that cannot be realized.  We consider all available positive and negative evidence on a 
jurisdiction-by-jurisdiction basis when assessing whether it is more likely than not that deferred tax assets are recoverable.  We 
consider evidence such as our past operating results, the existence of cumulative losses in recent years and our forecast of 
future taxable income. 

The Financial Accounting Standards Board, or FASB, issued guidance which clarifies the accounting for income taxes by 

prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized.  
The minimum threshold is defined as a tax position that is more likely than not to be sustained upon examination by the 
applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of 
the position.  The tax benefit to be recognized is measured as the largest amount of benefit that is greater than fifty percent 
likely to be realized upon ultimate settlement.  Although the guidance on the accounting for uncertainty in income taxes 
prescribes the use of a recognition and measurement model, the determination of whether an uncertain tax position has met 
those thresholds will continue to require significant judgment by management.  If the ultimate resolution of tax uncertainties is 
different from what is currently estimated, a material impact on income tax expense could result. 

Our provision for income taxes is subject to volatility and could be adversely impacted by changes in earnings or tax laws 
and regulations in various jurisdictions.  We are subject to the continuous examination of our income tax returns by the Internal 
Revenue Service 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.  To the extent that the final tax outcome of these 
matters is different from the amounts recorded, such differences will impact the provision for income taxes in the period in 
which such determination is made.  The provision for income taxes includes the impact of changes to reserves, as well as the 
related net interest and penalties.

Share-based Compensation Expense

The Company recognizes expense related to share-based compensation awards that are ultimately expected to vest based 

on estimated fair values on the date of grant using the Black-Scholes option valuation model.  Share-based compensation 
expense is recognized on the accelerated vesting attribution basis over the requisite service period of the award, which 
generally equals the vesting period.

74

 
The Company maintains an equity-settled, share-based compensation plan which grants share options and restricted share 
units (the "RSUs") to employees, directors and consultants.  In May 2010, the Company adopted the Employee Share Purchase 
Plan (the "ESPP").  The fair value of RSUs is based on the fair value of the Company's common share on the date of grant.  
The fair values of stock options and common stock issued under the ESPP are determined at the date of grant using the Black-
Scholes option valuation model.  

The Company determined the weighted average valuation assumptions as follows:

•  Expected term is determined by using the historical data of industry peers as adjusted for expected changes in future 
exercise patterns.  Starting July 2016, expected term will be estimated using the Company’s historical exercise 
behavior and expected future exercise behavior.

• 

Forfeiture rate is estimated based on the historical average period of time that the awards were outstanding and 
forfeited.  The estimate of forfeitures is adjusted over the requisite service period to the extent that actual forfeitures 
differ, or are expected to differ, from the prior estimates. Changes in estimated forfeitures are recognized in the 
period of change and impact the amount of stock compensation expenses to be recognized in future periods, which 
could be material if actual results differ significantly from our estimates.

•  Volatility is estimated based on combining both the Company's historical volatility and the volatility of industry peers 

over a period equivalent to the expected term of the stock awards granted.  Starting July 2016, the Company's 
publicly traded shares history will be solely used in estimating the volatility rate.

•  Risk-free interest rate is based on the yields of U.S. Treasury securities with maturities similar to the expected term 

of the awards granted. 

•  Dividend yield is zero as the Company has never declared or paid any dividends and currently has no intention to pay 

dividends in the foreseeable future. 

Advertising

Advertising expenditures are expensed as incurred.  Advertising expense was $0.4 million, $0.5 million, and $0.3 million 

for the fiscal years ended June 30, 2016, 2015, and 2014, respectively.

Comprehensive Income (Loss) 

Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from 

transactions and other events and circumstances from non-owner sources.  The Company's accumulated other comprehensive 
income (loss) consists of cumulative foreign currency translation adjustments. 

Leases

Leases entered into by the Company as a lessee are classified as capital or operating leases. Leases that transfer to the 

Company substantially the entire risks and benefits incidental to ownership are classified as capital leases.  At the inception of 
a capital lease, an asset and an obligation are recorded at an amount equal to the lesser of the present value of the minimum 
lease payments and the asset’s fair market value at the beginning of each lease.  Rental payments under operating leases are 
expensed as incurred.

Risks and Uncertainties 

The Company is subject to certain risks and uncertainties.  The Company believes changes in any of the following areas 

could have a material adverse effect on the Company's future financial position or results of operations or cash flows: new 
product development, including market receptiveness, operation of in-house manufacturing facilities, litigation or claims 
against the Company based on intellectual property, patent, product regulatory or other factors, competition from other 
products, general economic conditions, the ability to attract and retain qualified employees, the ability to successfully operate 
joint venture and ultimately to sustain profitable operations. 

The semiconductor industry is characterized by rapid technological change, competition, competitive pricing pressures 

and cyclical market patterns.  The Company's financial results are affected by a wide variety of factors, including general 
economic conditions specific to the semiconductor industry and the Company's particular market, such as the personal 
computing (PC) markets, the timely implementation of new products, new manufacturing process technology and the ability to 
safeguard patents and intellectual property in a rapidly evolving market.  In addition, the semiconductor market has historically 

75

 
 
 
been cyclical and subject to significant economic downturns. As a result, the Company may experience significant period-to-
period fluctuations in operating results due to the factors mentioned above or other factors. 

The Company transitioned from a fabless to a “fab-lite” business model by completing the acquisition of the Oregon fab 

on January 31, 2012.  Under this model, the Company allocates its wafer manufacturing requirements to both in-house capacity 
and selected third-party foundries.  The Company also deploys and implements its proprietary power discrete processes and 
equipment at third-party foundries to maximize the performance and quality of its products. 

The Company's revenue may be impacted by its ability to obtain adequate wafer supplies from third-party foundries and 
utilize wafer production and packaging and testing capacity from its in-house facilities.  Currently the Company's main third-
party foundry is Shanghai Hua Hong Grace Electronic Company Limited, or HHGrace, located in Shanghai, China.  HHGrace 
has been manufacturing wafers for the Company since 2002.  HHGrace manufactured  25.0% and 25.0% of the wafers used in 
the Company's products for the fiscal year ended June 30, 2016 and 2015, respectively.  Although the Company believes that 
its volume of production allows the Company to secure favorable pricing and priority in allocation of capacity in its third-party 
foundries, if the foundries' capacities are constrained due to market demands, HHGrace, together with other foundries from 
which the Company purchases wafers, may not be willing or able to satisfy all of the Company's manufacturing requirements 
on a timely basis and/or at favorable prices.  The Company is also subject to the risks of service disruptions and raw material 
shortages by its foundries. Such disruptions, shortages and price increases could harm the Company's operating results.  In 
addition, manufacturing facilities' capacity affects the Company's gross margin because the Company has certain fixed costs 
associated with its Oregon fab and in-house packaging and testing facilities.  If the Company fails to utilize its manufacturing 
facilities' capacity at a desirable level, its financial condition and results of operations will be adversely effected.

76

Recent Accounting Pronouncements

In May 2016, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU")  

2016-12, "Revenue from Contracts with Customers (Topic 606) - Narrow-Scope Improvements and Practical Expedients." 
ASU 2016-12 provides additional guidance established by the FASB-IASB Joint Transition Resource Group for Revenue 
Recognition regarding the implementation of certain aspects of the new revenue recognition guidance. More specifically, the 
amendment provides additional guidance regarding assessing the collectibility criterion, the presentation of sales taxes and 
other similar taxes collected from customers, noncash consideration, contract modifications or completed contracts at transition 
of the new revenue recognition guidance and technical corrections. The effective date is consistent with the effective date of 
ASU 2014-09.   The Company is currently evaluating the impact the adoption of ASU 2016-12 will have on its consolidated 
financial statements.

In April 2016, the FASB issued ASU 2016-10, Revenue from Contracts with Customers (Topic 606): Identifying 
Performance Obligations and Licensing ("ASU 2016-10").  ASU 2016-10 clarify two aspects of Topic 606: (a) identifying 
performance obligations; and (b) the licensing implementation guidance. The update is effective for annual periods beginning 
after December 15, 2017 including interim reporting periods therein. The Company is currently evaluating the impact the 
adoption of ASU 2016-10 will have on its consolidated financial statements.

In March 2016, the FASB issued ASU 2016-09, Improvements to Employee Share-Based Payment Accounting ("ASU 

2016-09").  ASU 2016-09 simplifies several aspects of the accounting for employee share-based payment transactions 
including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification of 
related amounts within the statement of cash flows. This guidance is effective for annual periods beginning after December 15, 
2016, and interim periods within those annual periods.  Early adoption is permitted. The Company does not expect the adoption 
of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows. 

In February 2016, the FASB issued No. 2016-02, Leases ("ASU 2016-02").  This guidance requires a dual approach for 

lessee accounting under which a lessee will account for leases as finance leases or operating leases.  Both finance and operating 
leases will result in the lessee recognizing a right-of-use asset and a corresponding liability on its balance sheet, with differing 
methodology for income statement recognition.  This guidance is effective for public business entities for fiscal years, and 
interim periods within those years, beginning after December 15, 2018, and early adoption is permitted.  A modified 
retrospective approach is required for all leases existing or entered into after the beginning of the earliest comparative period in 
the consolidated financial statements. The Company is currently assessing the impact that adoption of this guidance will have 
on its consolidated financial statements.

In July 2015, the FASB issued No. 2015-11, Inventory - Simplifying the Measurement of Inventory ("ASU 2015-11"). 

ASU 2015-11 is additional guidance regarding the subsequent measurement of inventory by requiring inventory to be 
measured at the lower of cost and net realizable value.  This guidance is effective for fiscal years and interim periods beginning 
after December 15, 2016.  Early adoption is permitted.  The Company does not expect the adoption of this guidance will have a 
material impact on its consolidated financial position, results of operations or cash flows. 

In April 2015, the FASB issued ASU No. 2015-03, Interest -Imputation of Interest (Subtopic 835-30): Simplifying the 
Presentation of Debt Issuance Costs.  The amendments in this ASU require that debt issuance costs related to a recognized debt 
liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with 
debt discounts and the accounting for debt issue costs under IFRS.  The recognition and measurement guidance for debt 
issuance costs are not affected by the amendments in this ASU.  ASU 2015-03 is effective for the annual period beginning after 
December 15, 2015, and interim periods within those fiscal years.  Early adoption of the amendments in this Update is 
permitted for financial statements that have not been previously issued.  The Company does not expect the adoption of this 
guidance will have a material impact on its consolidated financial position, results of operations or cash flows.

In February 2015, the FASB issued ASU No. 2015-2, “Consolidation (Topic 820): Amendments to the Consolidation 
Analysis.” ASU 2015-2 provides a revised consolidation model for all reporting entities to use in evaluating whether they 
should consolidate certain legal entities.  All legal entities will be subject to reevaluation under this revised consolidation 
model.  The revised consolidation model, among other things, (i) modifies the evaluation of whether limited partnerships and 
similar legal entities are VIEs or voting interest entities, (ii) eliminates the presumption that a general partner should 
consolidate a limited partnership, and (iii) modifies the consolidation analysis of reporting entities that are involved with VIEs 
through fee arrangements and related party relationships.  ASU 2015-2 is effective for fiscal years, and interim reporting 
periods within those fiscal years, beginning after December 15, 2015.  The Company does not expect the adoption of this 
guidance will have a material impact on its consolidated financial position, results of operations or cash flows.

77

In August 2014, the FASB issued amended standards No. 2014-15, Presentation of Financial Statements - Going Concern 
("ASU 2014-15"), to provide guidance about management’s responsibility to evaluate whether there is substantial doubt about 
an entity’s ability to continue as a going concern and to provide related footnote disclosures requirement. The amendments (1) 
provide a definition of the term substantial doubt, (2) require an evaluation for each annual and interim reporting period, (3) 
provide principles for considering the mitigating effect of management’s plans, (4) require certain disclosures when substantial 
doubt is alleviated as a result of consideration of management’s plans, (5) require an express statement and other disclosures 
when substantial doubt is not alleviated, and (6) require an assessment for a period of one year after the date that the financial 
statements are issued (or available to be issued).  ASU 2014-15 is effective for the annual period ending after December 15, 
2016, and for annual periods and interim periods thereafter. Early adoption is permitted.  The Company does not expect the 
adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows.

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (“ASU 2014-09”).  The 
standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and 
supersedes current revenue recognition guidance, including industry-specific revenue guidance.  The core principle of the 
model is to recognize revenue when control of the goods or services transfers to the customer, as opposed to recognizing 
revenue when the risks and rewards transfer to the customer under the existing revenue guidance.  In August 2015, the FASB 
issued an accounting standard update for a one-year deferral of the effective date of ASU 2014-09 to annual and interim 
periods beginning after December 15, 2017 and permits entities to early adopt the standard of ASU 2014-09 for annual and 
interim reporting periods beginning after December 15, 2016. Companies are permitted to either apply the requirements 
retrospectively to all prior periods presented, or apply the requirements in the year of adoption, through a cumulative 
adjustment.  The Company is in the process of evaluating the timing of its adoption and the impact of adoption on its 
consolidated financial statements.

Impact of Recent Accounting Pronouncements Adoption

In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Deferred Taxes, which eliminates the 
requirement for companies to present deferred tax liabilities and assets as current and non-current in a classified balance sheet. 
Instead, upon adoption, companies are required to classify all deferred tax assets and liabilities as non-current. The Company 
elected to early adopt the new guidance in the fourth quarter of fiscal year 2016 and has made the necessary conforming 
reclassifications to the accompanying June 30, 2016 consolidated balance sheet and related footnote disclosures.  The 
application of the provisions of ASU 2015-17 resulted in a $2.2 million reduction in current deferred tax assets, a $1.5 million  
increase in long-term deferred income tax assets and a $0.7 million reduction in non-current deferred income tax liabilities at 
June 30, 2015.

78

2. Net Income (loss) Per Common Share Attributable to Alpha and Omega Semiconductor Limited

Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during 

the period.  Diluted net income (loss) per share is computed using the weighted-average number of common shares 
outstanding, plus potential shares of common stock during the period.  Potential shares of common stock include dilutive shares 
attributable to the assumed exercise of share options, ESPP shares and vesting of RSUs using the treasury stock method and 
contingent issuances of common shares related to convertible preferred shares, if dilutive.  Under the treasury stock method, 
potential common shares outstanding are not included in the computation of diluted net income per share if their effect is anti-
dilutive.

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

Numerator:

Net loss attributable to Alpha and Omega
Semiconductor Limited

Denominator:

Basic:

Year Ended June 30,  

2016

2015

2014

(in thousands, except per share data)

$

(2,928) $

(7,763) $

(3,104)

Weighted average number of common shares used to
compute basic net loss per share

22,452

26,429

25,952

Diluted:

Weighted average number of common shares used to
compute diluted net loss per share

22,452

26,429

25,952

Net loss per share attributable to Alpha and Omega
Semiconductor Limited:

Basic

Diluted

$

$

(0.13) $
(0.13) $

(0.29) $
(0.29) $

(0.12)
(0.12)

The following potential dilutive securities were excluded from the computation of diluted net loss per share as their effect 

would have been anti-dilutive:

Employee stock options and RSUs

ESPP

Total potential dilutive securities

Year Ended June 30,  

2016

2015

2014

(in thousands)

3,737

380

4,117

3,206

414

3,620

3,940

601

4,541

79

 
 
 
 
3. Concentration of Credit Risk and Significant Customers 

The Company manages its credit risk associated with exposure to distributors and direct customers on outstanding 
accounts receivable through the application of credit approvals, credit ratings and other monitoring procedures.  In some 
instances, the Company also obtains letters of credit from certain customers.  

Credit sales, which are mainly on credit terms of 30 to 60 days, are only made to customers who meet the Company's 

credit standards, while sales to new customers or customers with low credit ratings are usually made on an advance payment 
basis.  The Company considers its financial assets to be of good credit quality because its key distributors and direct 
customers have long-standing business relationships with the Company and the Company has not experienced any significant 
bad debt write-offs of accounts receivable in the past.  The Company closely monitors the aging of accounts receivable from 
its distributors and direct customers, and regularly reviews their financial positions, where available.

Summarized below are individual customers whose revenue or accounts receivable balances were 10% or higher than 

the respective total consolidated amounts:

Percentage of revenue
Customer A

Customer B

Customer C

Percentage of accounts receivable
Customer A

Customer B

Customer C

2016

Year Ended June 30,
2015

2014

23.8%  

37.2%  

12.3%  

25.4%  

36.1%  

11.7%  

21.6%

43.1%

11.6%

June 30,

2016

2015

21.3%  

16.7%  

27.2%  

29.4%

27.7%

14.7%

80

 
  
  
  
  
  
 
 
  
  
  
  
  
4. Balance Sheet Components 

Accounts receivable

Accounts receivable

Less: Allowance for price adjustments

Less: Allowance for doubtful accounts

Accounts receivable, net

Inventories 

Raw materials

Work in-process

Finished goods

Property, plant and equipment, net

Land

Building

Manufacturing machinery and equipment

Equipment and tooling

Computer equipment and software

Office furniture and equipment

Leasehold improvements

Less accumulated depreciation

Equipment and construction in progress

Property, plant and equipment, net

June 30,  

2016

2015

(in thousands)

43,324
(16,700)
(30)
26,594

$

$

58,249
(19,438)
(30)
38,781

June 30, 

2016

2015

(in thousands)

23,982

$

32,446

12,420

68,848

$

19,423

31,269

13,483

64,175

$

$

$

$

June 30,  

2016

2015

(in thousands)

$

4,877

$

4,323

193,164

12,289

23,448

1,822

28,660
268,583
(168,687)
99,896

16,188

$

116,084

$

4,877

4,243

172,467

11,261

20,602

1,762

27,568
242,780
(141,883)
100,897

18,682

119,579

Total depreciation expense was $27.3 million, $27.4 million and $27.5 million for fiscal year 2016, 2015 and 2014, 

respectively.

The gross amount of computer software recorded under capital leases was $8.3 million and $5.8 million and the related 

accumulated depreciation was $5.6 million and $4.5 million, respectively, at June 30, 2016 and 2015.  

The Company capitalized $0.2 million, $1.0 million and $1.1 million of software development costs for fiscal year 2016, 
2015 and 2014, respectively.  Amortization of capitalized software development costs was $0.6 million, $0.5 million and $0.4 
million for fiscal year 2016, 2015 and 2014, respectively.  Unamortized capitalized software development costs at June 30, 
2016 and 2015 were $1.4 million and $1.8 million, respectively. 

81

 
 
 
 
 
 
 
 
 
Impairment of long-lived assets, intangible assets, and goodwill

The Company re-evaluates its long-lived assets, intangible assets and goodwill for impairment during the fourth quarter 
of every fiscal year.  During the fiscal year of 2016, the Company identified certain manufacturing equipments purchased for 
projects that were subsequently canceled.  Because the equipments had no alternative uses, the Company recorded an asset 
impairment expense of approximately of $0.4 million related to these equipments.  There was no impairment of long-lived 
assets for the fiscal year of 2015 and 2014.  Also there was no indication of intangible assets and goodwill impairment for the 
fiscal year of 2016, 2015 and 2014.

 Other long-term assets

Prepayments for property and equipment

Investment in a privately held company

Office leases deposits

Other

Intangible assets

Goodwill

Intangible assets

Patents and exclusive technology rights
Trade name
Customer relationships

Less accumulated amortization

Intangible assets, net

$

$

$

$

June 30,  

2016

2015

(in thousands)

$

548

100

1,427

—

15

269

2,359

$

June 30,  

2016

2015

$

(in thousands)
1,248
268
1,150
2,666
(2,651)
15

$

692

100

1,215

4

17

269

2,297

1,248
268
1,150
2,666
(2,649)
17

Amortization expense for intangible assets was $2,000, $0.1 million and $0.4 million for the years ended June 30, 2016, 

2015 and 2014, respectively. 

Future minimum amortization expense of intangible assets is as follows (in thousand):

Year ending June 30,
2017
2018

2019

2020

2021

Thereafter

82

$

$

2
2

2

2

2

5

15

 
 
 
 
Goodwill

The changes in the carrying value of goodwill is as follows (in thousands):

Balance at June 30, 2014

Addition:

Balance at June 30, 2015

Addition:

Balance at June 30, 2016

(in thousands)

$

$

269

—

269

—

269

Accrued liabilities

Accrued compensation and benefits
Warranty accrual
Stock rotation accrual
Accrued professional fees
Accrued inventory
Accrued facilities related expenses
Other accrued expenses

June 30,  

2016

2015

(in thousands)

10,211
1,495
1,988
1,867
918
1,544
4,567
22,590

$

$

8,582
1,957
1,894
1,402
697
1,367
3,326
19,225

$

$

The activity in the warranty accrual, included in accrued liabilities is as follows:

Beginning balance

Addition

Utilization

Ending balance

Year Ended June 30,

2016

2015

2014

$

$

(in thousands)

1,957

$

1,346

$

881
(1,343)
1,495

$

2,395
(1,784)
1,957

$

The activity in the stock rotation accrual, included in accrued liabilities is as follows:

Beginning balance

Addition

Utilization

Ending balance

Year Ended June 30,

2016

2015

2014

(in thousands)

1,894

$

1,645

$

6,578
(6,484)
1,988

$

5,781
(5,532)
1,894

$

$

$

83

1,428

1,267
(1,349)
1,346

1,572

5,006
(4,933)
1,645

 
 
 
 
Deferred margin 

Deferred margin consists of the following:

Deferred revenue

Deferred costs

Deferred margin

Capital leases

June 30,

2016

2015

$

$

(in thousands)

1,494
(497)
997

$

$

1,104
(388)
716

Long-term capital leases were included in the other long term liabilities in the consolidated balance sheets.  Capital lease 

liabilities as of June 30, 2016 and 2015 consisted of the following:

Computer software

Exclusive technology rights

Less current portion

Capital leases - long-term portion

June 30,

2016

2015

(in thousands)

$

$

2,449

65

2,514
(819)
1,695

$

$

923

82

1,005
(941)
64

The computer software and exclusive technology rights under capital leases were included in property, plant and 

equipment and intangible assets, respectively. 

Future minimum lease payments at June 30, 2016 are as follows (in thousand):

Year ending June 30,

2017

2018

2019

Total minimum lease payments

Less amount representing interest

Total capital lease liabilities

$

$

892

892

892

2,676
(162)
2,514

5. Debt

On May 11, 2012, the Company entered into a loan agreement with a financial institution that provided a term loan of 

$20.0 million for general purposes and a $10.0 million non-revolving credit line for the purchase of equipment.  Both the term 
loan and equipment credit line were fully repayable in May 2015.  The borrowings could have been made in the form of either 
Eurodollar loans or Base Rate loans.  Eurodollar loans accrued interest based on an adjusted London Interbank Offered Rate 
("LIBOR") as defined in the agreement, plus a margin of 1.00% to 1.75%.  Base Rate loans accrued interest at the highest of (a) 
the lender's Prime Rate, (b) the Federal Funds Rate plus 0.5% and (c) the Eurodollar Rate (for a one-month interest period) plus 
1%; plus a margin of -0.5% to 0.25%.  The applicable margins for both Eurodollar loans and Base Rate loans varied from time 
to time in the foregoing ranges based on the cash and cash equivalent balances maintained by the Company and its subsidiaries 
with the lender.  In May 2013, the equipment credit line expired and there was no outstanding balance.  In May 2015, the 
Company repaid the term loan in full. 

84

 
 
During July 2012, the Company entered into a loan agreement with the State of Oregon for an amount of $0.3 million.  

The loan was required to be used for training new and re-training existing employees of the Oregon fab.  The loan bore a 
compound annual interest rate of 5.0% and was to be repaid in April 2014 if the required conditions were not met.  In 
September 2014, the State of Oregon forgave the outstanding balance in full as the Company had satisfied the conditions.  The 
$0.3 million loan forgiven was recorded as a reduction of costs of goods sold in our condensed consolidated statements of 
operations.  

6. Joint Venture

On March 29, 2016, the Company entered into a joint venture contract (the “JV Agreement”) with two investment funds 

affiliated with the municipalities of Chongqing (the “Chongqing Funds”), pursuant to which the Company and Chongqing 
Funds form a joint venture, (the “JV Company”), for the purpose of constructing a power semiconductor packaging, testing and 
12-inch wafer fabrication facility in the Liangjiang New Area of Chongqing, China (the “JV Transaction”).  The total initial 
capitalization of the JV Company is $330.0 million (the “Initial Capitalization”), which includes cash contribution from the 
Chongqing funds and contributions of cash, equipments and intangible assets from the Company.  The Initial Capitalization 
will be completed in stages commencing on the incorporation of the JV Company.  The Company owns 51%, and the 
Chongqing Funds owns 49%, of the equity interest in the JV Company.  The Company expects the JV company to commence 
its initial production in the first half of fiscal 2018.   

The Company began consolidating the expenses of the JV Company during the quarter ended June 30, 2016.  The 

Company and the Chongqing Funds did not make any capital contributions to the JV Company as of June 30, 2016.  Within one 
year from June 30, 2016, the Company is expected to contribute certain intangible assets, a portion of the packaging 
equipments currently being used in the Company's Shanghai facility, and cash of $10.0 million pursuant to the terms of the JV 
agreement.  In July 2016, the Chongqing Funds contributed $33.0 million initial capital to the JV Company. 

 7. Shareholders' Equity

Common Shares

The Company's bye-laws, as amended, authorized the Company to issue 50,000,000 common shares with par value of 

$0.002.  Each common share is entitled to one vote.  The holders of common shares are also entitled to receive dividends 
whenever funds are legally available and when and if declared by the board of directors, subject to the prior rights of holders of 
all classes of shares outstanding.  No dividends had been declared as of June 30, 2016.

On October 22, 2010, the Company's board of directors authorized a $25.0 million share repurchase program.  Under this 

repurchase program the Company was authorized to repurchase shares from the open market or in privately negotiated 
transactions, from time to time, subject to supervision and oversight by the board.  The Company accounts for treasury stock 
under the cost method.  Shares repurchased are accounted for as treasury shares and the total cost of shares repurchased is 
recorded as a reduction of shareholders' equity.  From time to time, treasury shares may be reissued as part of the Company's 
stock-based compensation programs.  Gains on re-issuance of treasury stock are credited to additional paid-in capital; losses are 
charged to additional paid-in capital to offset the net gains, if any, from previous sales or re-issuance of treasury stock.  Any 
remaining balance of the losses are charged to retained earnings. On May 8, 2014, the Company's Board of Directors approved 
to reactivate the share repurchase program with a remaining balance of $22.7 million.  In April 2015, the Board of Directors 
approved an increase in the remaining available amount under the Company’s share repurchase program from approximately 
$17.8 million to $50.0 million. 

In June 2015, the Company commenced a modified Dutch auction tender offer (the "Tender Offer") to repurchase an 
aggregate of $30.0 million of its outstanding common shares with a price range between $8.50 and $9.20 per share.  In July 
2015,  the Company completed the Tender Offer in which it purchased 3,296,703 shares of its common shares, at a purchase 
price of $9.10 per share, for an aggregate purchase price of $30.0 million, excluding fees and expenses relating to the Tender 
Offer.  These shares represent approximately 12.53% of the total number of the Company's common shares issued and 
outstanding as of June 30, 2015.  The Tender Offer was part of the $50.0 million share repurchase program approved by the 
Board in April 15, 2015.  Immediately following the completion of the Tender Offer, approximately $18.2 million remained 
available under the share repurchase program.

During fiscal years 2016, 2015 and 2014, the Company repurchased an aggregate of 4,695,499 shares, 666,230 shares and 

119,594 shares, respectively, from the open market for a total cost of approximately $41.8 million, $5.8 million and $0.9 
million, excluding fees and related expenses, at an average price of $8.90, $8.70 and $7.66 per share, respectively. 

85

 
                  
As of June 30, 2016, the Company had repurchased an aggregate of 5,723,093 shares for a total cost of $50.8 million, at 

an average price of $8.87 per share, excluding fees and related expenses, since inception of the program.  No repurchased 
shares have been retired.  Of the 5,723,093 repurchased shares, 71,803 shares with a weighted average repurchase price of 
$12.33 per share, were reissued at an average price of $4.28 per share for option exercises and vested restricted stock units 
("RSU"). As of June 30, 2016, $6.4 million remain available under the share repurchase program.

Convertible Preferred Shares

On May 4, 2010, concurrent with the closing of the Company's initial public offering, all of the Company's outstanding 

preferred shares including 5,050,000 Series A convertible preferred shares, 2,488,094 Series B convertible preferred shares and 
3,174,000 Series C convertible preferred shares, were automatically converted into 10,712,094 shares of common shares and 
the then-existing classes of preferred stock ceased to exist.  At June 30, 2016 and 2015, the Company had no preferred shares 
outstanding and had 10,000,000 authorized undesignated preferred shares.

8. Share-based Compensation 

2000 Share Plan

The 2000 Share Plan (the “2000 Plan”), as amended, authorized the board of directors to grant incentive share options 
and non-statutory share options to employees, directors and consultants of the Company and its subsidiaries for up to 5,425,000 
common shares.  Under the 2000 Plan, incentive share options and non-statutory share options were to be granted at a price that 
was not less than 100% and 85% of the fair value of the common share at the date of grant for employees and consultants, 
respectively.  Options generally vest over a five-year period, 20% on the first anniversary from the grant date and ratably each 
month over the remaining 48-month period, and are exercisable for a maximum period of ten years after the date of grant. 
Incentive share options granted to shareholders who own more than 10% of the outstanding shares of all classes of shares of the 
Company at the time of grant must be issued at an exercise price not less than 110% of the fair value of the common shares on 
the date of grant.  In connection with the adoption of the 2009 Share Option/Share Issuance Plan on September 18, 2009, the 
2000 Share Plan was terminated and no further awards were granted under the 2000 Share Plan.

2009 Share Option/Share Issuance Plan

The 2009 Share Option/Share Issuance Plan (the “2009 Plan”), as approved in September 2009 at the annual general 
meeting of shareholders, and as amended and restated in connection with the Company's IPO, authorized the board of directors 
to grant incentive share options, non-statutory share options and restricted shares to employees, directors, and consultants of the 
Company and its subsidiaries for up to 1,250,000 common shares. The number of common shares available for issuance under 
the 2009 Plan shall automatically increase in January each calendar year during the term of the 2009 Plan, beginning with 
calendar year 2011, by the lesser of 3% of the total number of common shares outstanding or 750,000 shares.  This increase 
was 668,915 shares, 750,000 shares and 750,000 shares for the years ended June 30, 2016, 2015 and 2014, respectively.  As of 
June 30, 2016, 2,527,000 shares were available for grant under the 2009 Plan.

The 2009 Plan is divided into three incentive compensation programs: Discretionary Grant Program, Share Issuance 
Program and Automatic Grant Program. Under the Discretionary Grant Program, eligible individuals may be granted options to 
purchase common shares and share appreciation rights tied to the value of the Company's common shares.  Under the Share 
Issuance Program, eligible individuals may be issued common shares pursuant to restricted share awards, restricted share units, 
performance shares or other share-based awards which vest upon the attainment of pre-established performance milestones or 
the completion of a designated service period.  Under the Automatic Grant Program, eligible non-employee board members 
will automatically receive options to purchase common shares at designated intervals over their period of continued board 
service.  Each non-employee board members was granted an option to purchase 7,500 common shares on April 28, 2010 with 
exercise price equal to the IPO price.  On the date of each annual shareholders meeting beginning in 2010 and ending in 2013, 
each individual who commence service as a non-employee board member by reason of his or her election to the board at such 
meeting and each individual who continues to serve as a non-employee board member was automatically granted an option to 
purchase 7,500 common shares.  Beginning with the 2014 Annual Shareholders Meeting, on the date of each annual 
shareholders meeting, each individual who commences service as a non-employee Board member by reason of his or her 
election to the Board at such annual meeting and each individual who is to continue to serve as a non-employee Board member, 
whether or not that individual is standing for re-election to the Board at that particular annual meeting, will automatically be 
granted an award in the form of restricted share units ("RSU") covering that number of common shares determined by dividing 
forty-two thousand dollars ($42,000) by the average fair market value per share for the ninety (90)-day period preceding the 
grant date (the “Annual RSU Grant”).

86

Under the 2009 Plan, incentive share options and RSU are to be granted at a price that is not less than 100% and 
nonstatutory share options are to be granted not less than 85% of the fair value of the common shares, at the date of grant for 
employees and consultants.  Options and RSUs generally vest over a four-year to five-year period, and are exercisable for a 
maximum period of ten years after the date of grant.  Incentive share options granted to shareholders who own more than 10% 
of the outstanding shares of all classes of shares of the Company at the time of grant must be issued at an exercise price not less 
than 110% of the fair value of the common shares on the date of grant. 

A summary of the stock option activities under the 2000 Plan and 2009 Plan is as follows:

Weighted
Average
Exercise Price
Per Share

Number of
Shares

Weighted
Average
Grant Date
Fair Value
Per Share

Weighted
Average 
Remaining
Contractual 
Term (in years)

Outstanding at June 30, 2013

Granted
Exercised
Canceled or forfeited

Outstanding at June 30, 2014

Granted
Exercised
Canceled or forfeited

Outstanding at June 30, 2015

Granted

Exercised

Canceled or forfeited

$
3,593,854
764,375
$
(421,456) $
(697,989) $
$
3,238,784
10,000
$
(269,861) $
(142,706) $
$
2,836,217

$

$

10.24
7.49
2.60
11.65
10.28
9.07
5.22
10.08
10.77

3.85

4.42

— $

— $

—

(666,445) $

(310,512) $

8.36

12.34

11.37

11.41

12.00

Outstanding at June 30, 2016

1,859,260

Options vested and expected to vest

1,840,261

Exercisable at June 30, 2016

1,595,992

$

$

$

Aggregate
Intrinsic Value

$

2,222,155

$

1,088,061

$

$

$

$

1,746,173

5,959,720

5,839,323

4,296,568

5.46

5.79

4.64

4.71

4.68

4.22

The aggregate intrinsic value for options outstanding at June 30, 2016 in the table above is based on the Company’s 

common stock closing price on June 30, 2016.

Information with respect to stock options outstanding and exercisable as of June 30, 2016 is as follows:

Range of Exercise Prices 

Number
Outstanding

Options Outstanding  

Options Exercisable  

Weighted-
Average
Remaining
Contractual Life
 (Years)

Weighted-
Average
Exercise Price

Number
Exercisable

Weighted-
Average
Exercise Price  

$7.21 - $7.21

$7.44 - $7.44

$7.47 - $9.90

$10.22 - $13.00

$14.14 - $18.00

$7.21 - $18.00

6,875

436,147

399,788

646,450

370,000

1,859,260

7.58

7.71

5.71

2.55

3.81

4.71

$

$

$

$

$

$

7.21

7.44

8.84

12.31

17.20

11.37

6,875

226,146

346,521

646,450

370,000

1,595,992

$

$

$

$

$

$

7.21

7.44

8.92

12.31

17.20

12.00

 The Company did not grant any stock options during the year ended June 30, 2016.  The fair value of stock options 
granted during the years ended June 30, 2015 and 2014 were estimated at the date of grant using the Black-Scholes option 
valuation model with the following weighted-average assumptions:

87

 
Volatility rate

Risk-free interest rate

Expected option life

Dividend yield

2016

—%

—%

—

—%

Year Ended June 30,

2015

2014

40.9% - 43.5%

46.9% - 49.2%

1.6% - 1.8%

1.0% - 1.7%

5.5 years

—%

5.5 years

—%

Restricted Stock Units ("RSU")

The following table summarizes the Company's RSU activities:

Nonvested at June 30, 2013

Granted

Vested

Forfeited

Nonvested at June 30, 2014

Granted

Vested

Forfeited

Nonvested at June 30, 2015

Granted

Vested

Forfeited

Nonvested at June 30, 2016

Employee Share Purchase Plan 

Number of 
Restricted Stock
Units

Weighted Average
Grant Date Fair
Value Per Share

549,553

368,554

$

$

(136,581) $

(125,152) $

656,374

493,622

$

$

(213,180) $

(62,870) $

873,946

466,255

$

$

(301,695) $

(105,443) $

933,063

$

9.50

7.54

9.46

9.54

8.40

8.92

8.65

8.35

8.64

11.28

10.97

8.85

9.18

Weighted Average
Remaining
Recognition
Period (Years)

Aggregate Intrinsic
Value

1.87

$

4,198,585

1.77

$

6,084,587

1.77

$

7,638,288

1.73

$

12,997,568

The Employee Share Purchase Plan (“Purchase Plan” or “ESPP”) was established in May 2010 upon the completion of 

the Company's IPO.  The Purchase Plan provided for a series of overlapping offering periods with a duration of 24 months, 
with new offering periods, generally beginning on May 15 and November 15 of each year.  The Purchase Plan allows 
employees to purchase common shares through payroll deductions of up to 15% of their eligible compensation.  Such 
deductions will accumulate over a six-month accumulation period without interest.  After such accumulation period, common 
shares will be purchased at a price equal to 85% of the fair market value per share on either the first day of the offering period 
or the last date of the accumulation period, whichever is less.  The maximum number of shares that may be purchased on any 
purchase date may not exceed 875 shares for a total of 3,500 shares per a 24-month offering period.  In addition, no participant 
may purchase more than $25,000 worth of common stock in any one calendar year period.

The Company initially reserved 600,000 common shares for issuance under the ESPP.  The share reserve will 

automatically increase in January of each calendar year during the term of the ESPP, beginning with calendar year 2011, by the 
lesser of 0.75% of the outstanding common shares or 250,000 shares.  This increase was 167,229 shares, 192,000 shares and 
192,000 shares for the years ended June 30, 2016, 2015 and 2014, respectively.

The ESPP is compensatory and results in compensation expense. The fair values of common shares to be issued under the 

ESPP were determined using the Black-Scholes option valuation model with the following assumptions:

88

 
 
 
 
Volatility rate

Risk-free interest rate

Expected term

Dividend yield

Year Ended June 30,

2016

2015

32.2% - 34.8%

31.4% - 50.0%

2014

50.0%

0.3% - 0.9%

0.1% - 0.6%

0.1% - 0.4%

1.3 years

—%

1.3 years

—%

1.3 years

—%

The weighted-average estimated fair value of employee stock purchase rights granted pursuant to the ESPP during the 

years ended June 30, 2016, 2015 and 2014 was $2.85, $2.80 and $2.89 per share, respectively. 

Share-based Compensation Expenses

The total share-based compensation expense related to stock options, ESPP and RSUs described above, recognized in the 

consolidated statements of operations for the years presented was as follows:

Cost of goods sold

Research and development

Selling, general and administrative

Year Ended June 30,

2016

2015

2014

$

$

(in thousands)

636

$

1,115

2,562

$

669

779

3,042

4,313

$

4,490

$

614

786

1,975

3,375

Total unrecognized share-based compensation expense as of June 30, 2016 was $5.8 million including estimated 

forfeitures, which is expected to be recognized over a weighted-average period of 1.6 years. 

9. Employee Benefit Plans 

The Company maintains a 401(k) retirement plan for the benefit of qualified employees in the U.S..  Employees who 

participate may elect to make salary deferral contributions to the plan up to 100% of the employees' eligible salary subject to 
annual Internal Revenue Code maximum limitations.  The employer's contribution is discretionary. The Company had not made 
any contributions for eligible employees as of June 30, 2016.

The Company makes mandatory contributions for its employees to the respective local governments in terms of 

retirement, medical insurance and unemployment insurance, where applicable, according to labor and social security laws and 
regulations of the countries and areas in which the Company operates.  The contribution rates for retirement are 7.7%, 13.0% to 
20.0% and 6.0% for employees in the U.S., China and Taiwan, respectively.  The Company has no obligations for the payment 
of such social benefits beyond the required contributions as set out above.

89

        
10. Income Taxes 

The provision for income taxes is comprised of:

U.S. federal taxes:

Current

Deferred

Non-U.S. taxes:

Current

Deferred

State taxes, net of federal benefit:

Current

Deferred

Year Ended June 30, 

2016

2015

2014

(in thousands)

$

$

152

650

66

$

852

3,382
(169)

6

—

3,059
(15)

(65)
—

(65)
1,144

2,316
(608)

(38)
20

Total provision for income taxes

$

4,021

$

3,897

$

2,769

The reconciliation of the federal statutory income tax rate to our effective income tax rate is as follows (in percentage):

United States statutory rate

State taxes, net of federal benefit

Stock based compensation

Foreign taxes, net

Research and development credit

Non-deductible expenses

Other

Year Ended June 30,

2016

2015

2014

34.0%

0.4
(0.4)
440.3
(69.3)
1.7
(0.1)
406.6%

34.0 %

34.0 %

1.2

0.4

2

3.2

(145.7)

(900.2)

10

(0.7)

—

45.4

(8.7)

(2.3)

(100.8)%

(826.6)%

The domestic and foreign components of income (loss) before taxes are:

U.S. operations

Non-U.S. operations

Income (loss) before income taxes

Year Ended June 30, 

2016

2015

2014

(in thousands)

$

$

4,259
(3,270)
989

$

$

$

4,614
(8,480)
(3,866) $

4,184
(4,519)
(335)

90

 
 
 
 
 
 
 
 
 
Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and 

liabilities for financial reporting purposes and the amounts used for income tax purposes.  Significant components of our 
deferred tax assets and liabilities are as follows:

Deferred tax assets:

Accrued compensation

Net operating loss carryforwards

Depreciation

Tax credits

Accruals and reserves

Total deferred tax assets

Valuation allowance

Total deferred tax assets, net of valuation allowance

Deferred tax liabilities:

Depreciation and amortization

Accruals and reserves

Total deferred tax liabilities

Net deferred tax assets

June 30, 

2016

2015

(in thousands)

$

2,267

$

67

10,345

6,069

934

19,682
(2,894)
16,788

(7,388)
(241)
(7,629)
9,159

$

$

1,915

81

11,079

5,171

658

18,904
(2,700)
16,204

(5,651)
(523)
(6,174)
10,030

The breakdown between current and non-current deferred tax assets and liabilities is as follows:

Long-term deferred tax assets

Long-term deferred tax liabilities

Net deferred tax assets

June 30, 

2016

2015

(in thousands)

$

$

$

12,132
(2,973)

12,340
(2,310)

9,159

$

10,030

At June 30, 2016 and 2015, the Company provided a valuation allowance for its state research and development credit 
carryforward deferred tax assets, as it generated more state tax credits each year than it can utilize.  The Company intends to 
maintain a partial valuation allowance equal to the state research and development credit carryfowards until sufficient positive 
evidence exists to support reversal of the valuation allowance. 

At June 30, 2016, the Company had federal tax credit carryforwards of approximately $3.0 million.  The federal tax 
credits begin to expire in 2029, if not utilized. At June 30, 2016, the Company had no state net operating loss carryforwards and 
had tax credit carryforwards of approximately $4.6 million.  Approximately $0.2 million of the state tax credits begin to expire 
in 2018, if not utilized. The remaining $4.4 million of the state tax credits carryforward indefinitely. 

The Company has not provided for withholding taxes on the undistributed earnings of its foreign subsidiaries because it 

intends to reinvest such earnings indefinitely. As of June 30, 2016, the cumulative amount of undistributed earnings of its 
foreign entities considered permanently reinvested is $82.2 million. The determination of the unrecognized deferred tax 
liability on these earnings is not practicable. Should the Company decide to remit this income to its Bermuda parent company 
in a future period, its provision for income taxes may increase materially in that period. 

At June 30, 2016, the Company had approximately $6.7 million in total unrecognized tax benefits. A reconciliation of the 

beginning and ending amount of unrecognized tax benefits from July 1, 2014 to June 30, 2016 is as follows:

91

 
 
 
 
Balance at beginning of year

Additions based on tax positions related to the current year

Additions (reductions) based on tax positions related to prior years

Reductions due to lapse of applicable statute of limitations

Balance at end of year

Year Ended June 30, 

2016

2015

2014

(in thousands)

6,412

$

6,760

$

388

—
(57)

297

4
(649)

7,668

329
(18)
(1,219)

6,743

$

6,412

$

6,760

$

$

At June 30, 2016, the total unrecognized tax benefits of $6.7 million included $5.4 million of unrecognized tax benefits 

that have been netted against the related deferred tax assets. The remaining $1.3 million of unrecognized tax benefits was 
recorded within long-term income tax payable on the Company's consolidated balance sheet as of June 30, 2016.

The total unrecognized tax benefits of $6.7 million at June 30, 2016 included $4.4 million that, if recognized, would 
reduce the effective income tax rate in future periods.  It is reasonably possible that the Company will recognize approximately 
$0.6 million reduction to its uncertain tax positions during the next twelve months.

The Company recognizes interest and penalties related to uncertain tax positions in income tax expense.  To the extent 

accrued interest and penalties do not ultimately become payable, amounts accrued will be reduced and reflected as a reduction 
of the overall income tax provision in the period that such determination is made.  The amount of interest and penalties accrued 
at June 30, 2016 was $0.3 million, of which $0.03 million was recognized in the year ended June 30, 2016.  The amount of 
interest and penalties accrued at June 30, 2015 was $0.2 million, of which $(0.1) million was recognized in the year ended 
June 30, 2015.

The Company files its income tax returns in the United States and in various foreign jurisdictions.  The tax years 2001 to 

2016 remain open to examination by U.S. federal and state tax authorities.  The tax years 2009 to 2016 remain open to 
examination by foreign tax authorities. 

The Company's income tax returns are subject to examinations by the Internal Revenue Service and other tax authorities 

in various jurisdictions.  In accordance with the guidance on the accounting for uncertainty in income taxes, the Company 
regularly assesses the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of its 
provision for income taxes. These assessments can require considerable estimates and judgments.  If the Company's estimate of 
income tax liabilities proves to be less than the ultimate assessment, then a further charge to expense would be required.  If 
events occur and the payment of these amounts ultimately proves to be unnecessary, the reversal of the liabilities would result 
in tax benefits being recognized in the period when the Company determines the liabilities are no longer necessary. 

11. Segment and Geographic Information 

The Company is organized as, and operates in, one operating segment: the design, development and supply of power 
semiconductor products for computing, consumer electronics, communication and industrial applications.  The chief operating 
decision-maker is the Chief Executive Officer.  The financial information presented to the Company's Chief Executive Officer 
is on a consolidated basis, accompanied by information about revenue by customer and geographic region, for purposes of 
evaluating financial performance and allocating resources.  The Company has one business segment, and there are no segment 
managers who are held accountable for operations, operating results and plans for products or components below the 
consolidated unit level.  Accordingly, the Company reports as a single operating segment.

The Company sells its products primarily to distributors in the Asia Pacific region, who in turn sell these products to end 
customers.  Because the Company's distributors sell their products to end customers which may have global presence, revenue 
by geographical location is not necessarily representative of the geographical distribution of sales to end user markets. 

The revenue by geographical location in the following tables is based on the country or region in which the products were 

shipped to: 

92

 
 
Table of Contents

Hong Kong

China

South Korea

United States

Other countries

The following is a summary of revenue by product type:

Power discrete

Power IC

Packaging and testing services

Year Ended June 30, 

2016

2015

2014

(in thousands)

$

290,555

$

277,825

$

271,728

37,444

1,960

3,110

2,592

42,103

2,253

2,942

2,812

38,740

3,033

1,976

2,644

$

335,661

$

327,935

$

318,121

Year Ended June 30, 

2016

2015

2014

(in thousands)

$

252,063

$

248,716

$

246,033

69,344

14,254

63,529

15,690

53,993

18,095

$

335,661

$

327,935

$

318,121

Long-lived assets, consisting of property, plant and equipment by geographical area are as follows:

China

United States

Other countries

June 30,

2016

2015

(in thousands)

$

64,272

$

51,214

598

71,618

47,439

522

$

116,084

$

119,579

93

 
 
 
 
 
 
 
 
 
 
 
Table of Contents

12. Restricted Net Assets 

Laws and regulations in China permit payments of dividends by the Company's subsidiaries in China only out of their 

retained earnings, if any, as determined in accordance with China accounting standards and regulations.  Each China subsidiary 
is also required to set aside at least 10% of its after-tax profit, if any, based on China accounting standards each year to its 
statutory reserves until the cumulative amount of such reserves reaches 50% of its registered capital.  As a result of these China 
laws and regulations, the Company's China subsidiaries are restricted in their abilities to transfer a portion of their net assets to 
the Company.  As of June 30, 2016 and 2015, such restricted portion amounted to approximately $84.2 million and $86.8 
million, or 34.8% and 31.4%, of our total consolidated net assets, respectively. As the Company's China subsidiaries are not 
revenue generating operating units, the Company does not expect to repatriate funds in the form of dividends, loans or 
advances from its China subsidiaries for working capital and other funding purposes.

13. Commitments and Contingencies

Operating lease obligations

The Company leases its office facilities and certain office equipment under non-cancelable operating leases that expire 
through 2023. Rent expense related to the Company's operating leases was $3.5 million, $3.5 million and $3.4 million for the 
fiscal years ended June 30, 2016, 2015 and 2014, respectively. Certain leases contain escalation clauses calling for increased 
rents.

Future minimum lease payments of these leases at June 30, 2016 are as follows: 

Year ending June 30,

2017
2018
2019
2020
2021
Thereafter

Operating
Leases  

(in thousands)

$

$

3,200
2,249
1,849
1,484
554
574
9,910

Purchase commitments

As of June 30, 2016 and 2015, the Company had approximately $39.6 million and $29.2 million, respectively, of 

outstanding purchase commitments primarily for purchases of semiconductor raw materials, wafers, spare parts and packaging 
and testing services.

As of June 30, 2016 and 2015, the Company had approximately $6.6 million and $3.7 million, respectively, of capital 

commitments for the purchase of property and equipment.

Contingencies and indemnities

The Company is currently not a party to any material legal proceedings.  The Company has in the past, and may from 
time to time in the future, becomes involved in legal proceedings arising from the normal course of business activities.  The 
semiconductor industry is characterized by frequent claims and litigation, including claims regarding patent and other 
intellectual property rights as well as improper hiring practices.  Irrespective of the validity of such claims, the Company could 
incur significant costs in the defense thereof or could suffer adverse effects on its operations. 

The Company is a party to a variety of agreements that it contracted with various parties.  Pursuant to these agreements, 

the Company may be obligated to indemnify another party to such an agreement with respect to certain matters.  Typically, 
these obligations arise in the context of contracts entered into by the Company, under which the Company customarily agrees to 
hold the other party harmless against losses arising from a breach of representations and covenants related to such matters as 
title to assets sold, certain intellectual property rights, specified environmental matters and certain income taxes.  In these 
circumstances, payment by the Company is customarily conditioned on the other party making a claim pursuant to the 
procedures specified in the particular contract, which procedures typically allow the Company to challenge the other party's 

94

 
claim.  Further, the Company's obligations under these agreements maybe limited in time and/or amount, and in some 
instances, the Company may have recourse against third parties for certain payments made by it under these agreements.  The 
Company has not historically paid or recorded any material indemnifications and no accrual was made at June 30, 2016 and 
2015. 

The Company has agreed to indemnify its directors and certain employees as permitted by law and pursuant to its bye-
laws, and has entered into indemnification agreements with its directors and executive officers.  The Company has not recorded 
a liability associated with these indemnification arrangements, as it historically has not incurred any material costs associated 
with such indemnification obligations.  Costs associated with such indemnification obligations may be mitigated by insurance 
coverage that the Company maintains, however, such insurance may not cover any, or may cover only a portion of, the amounts 
the Company may be required to pay.  In addition, the Company may not be able to maintain such insurance coverage in the 
future.

Joint Venture

In March 2016, we executed an agreement with two strategic investment funds owned by the Municipality of Chongqing, 
China to form a joint venture for a new state-of -the-art power semiconductor packaging, testing and wafer fabrication facility 
in Liangjiang New Area of Chongqing.  The Joint Venture is expected to commence its initial production in the first half of 
fiscal 2018.  Under the Joint Venture agreement, the Company is required to contribute $10.0 million in cash, equipments and 
intangible assets within one year from June 30, 2016.

Environmental matters

The Company is subject to various federal, state, local, and foreign laws and regulations governing environmental
matters, including the use, handling, discharge, and disposal of hazardous materials.  The Company believes that it has been in 
material compliance with applicable environmental regulations and standards.  Complying with current laws and regulations 
has not had a material adverse effect on the Company’s financial condition and results of operations.  However, it is possible 
that additional environmental issues may arise in the future, which the Company cannot currently predict.

95

ALPHA AND OMEGA SEMICONDUCTOR LIMITED (PARENT COMPANY BASIS)
CONDENSED UNCONSOLIDATED BALANCE SHEETS
(in thousands, except par value per share)

SCHEDULE I

June 30,  

2016

2015

ASSETS

Current assets:

Cash and cash equivalents

Accounts receivable - Intercompany

Other current assets

Total current assets

Property, plant and equipments, net

Other long-term assets

Investment in subsidiaries

Total assets

LIABILITIES AND EQUITY

Current liabilities:

Accounts payable and accrued liabilities

Total liabilities

Equity:

Preferred shares, par value $0.002 per share:

$

8,051

$

13,385

268

21,704

1,308

100

219,594

$

242,706

$

$

$

667

667

  Authorized: 10,000 shares; Issued and outstanding: none at June 30, 2016 and 2015

—

Common shares, par value $0.002 per share:

Authorized: 50,000 shares; Issued and outstanding: 28,405 shares and 22,754 shares at
June 30, 2016 and 27,314 shares and 26,316 shares at June 30, 2015

Treasury shares at cost; 5,651 shares at June 30, 2016 and 998 shares at June 30, 2015

Additional paid-in capital

Accumulated other comprehensive income

Retained earnings

Total Alpha and Omega Semiconductor Limited shareholder's equity

Noncontrolling interest

Total equity
Total liabilities and equity

57
(50,199)
191,444

769

100,071

242,142
(103)
242,039
242,706

$

$

The accompanying notes to Schedule I are an integral part of these financial statements.

17,397

39,004

291

56,692

1,786

100

218,552

277,130

491

491

—

55
(8,593)
181,040

905

103,232

276,639

—

276,639
277,130

96

 
 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED (PARENT COMPANY BASIS)
CONDENSED UNCONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands)

SCHEDULE I

Year Ended June 30,

2016

2015

2014

$

3,345

$

3,332

$

Revenue

Cost of revenue

Gross profit

Operating expenses:

Selling, general and administrative

Total operating expenses

Operating loss

Interest income

Interest expense

Loss on equity investment in subsidiaries

Net loss including noncontrolling interest

Net loss attributable to noncontrolling interest

Net loss attributable to Alpha and Omega Semiconductor Limited

$

—

3,345

3,438

3,438
(93)

7

—
(2,946)
(3,032)
(104)
(2,928) $

—

3,332

3,477

3,477
(145)

7
(2)
(7,623)
(7,763)
—
(7,763) $

3,074

—

3,074

3,171

3,171
(97)

6
(11)
(3,002)
(3,104)
—
(3,104)

The accompanying notes to Schedule I are an integral part of these financial statements.

97

 
 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED (PARENT COMPANY BASIS)
CONDENSED UNCONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
(in thousands)

SCHEDULE I

Net loss including noncontrolling interest

Other comprehensive income, net of tax

Foreign currency translation adjustment

Comprehensive loss

Noncontrolling interest

Year ended June 30,

2016

2015

2014

$

(3,032) $

(7,763) $

(3,104)

(135)
(3,167)
(103)

(128)
(7,891)
—

76
(3,028)
—

Comprehensive loss attributable to Alpha and Omega Semiconductor
Limited

$

(3,064) $

(7,891) $

(3,028)

The accompanying notes to Schedule I are an integral part of these financial statements.

98

ALPHA AND OMEGA SEMICONDUCTOR LIMITED (PARENT COMPANY BASIS)
CONDENSED UNCONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands)

SCHEDULE I

Cash flows from operating activities

Net loss

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

Depreciation

Share-based compensation expense

Equity in net loss of subsidiaries

Changes in working capital, net of impact of acquisition:

Accounts receivable - intercompany

Other current assets

Accounts payable and accrued liabilities

Net cash provided by (used in) operating activities

Cash flows from investing activities

Purchase of property and equipment

Net cash used in investing activities

Cash flows from financing activities

Withholding tax on restricted stock units

Proceeds from exercise of stock options and ESPP

Payment for repurchase of common shares
Principal payments on capital leases

Net cash provided by (used in) financing activities

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of year

Year Ended June 30,

2016

2015

2014

$

(3,032) $

(7,763) $

(3,104)

545

190

2,946

25,620

23

174

26,466

(67)
(67)

(1,036)
7,371
(42,080)
—
(35,745)
(9,346)
17,397

587

242

7,623

15,664

26
(101)
16,278

(625)
(625)

(539)
3,007
(5,816)
(95)
(3,443)
12,210

5,187

366

187

3,002

(2,333)
(124)
(191)
(2,197)

(919)
(919)

(316)
2,675
(918)
(281)
1,160
(1,956)
7,143

5,187

Cash and cash equivalents at end of year

$

8,051

$

17,397

$

The accompanying notes to Schedule I are an integral part of these financial statements.

99

 
 
 
ALPHA AND OMEGA SEMICONDUCTOR LIMITED (PARENT COMPANY BASIS)

NOTES TO THE CONDENSED UNCONSOLIDATED FINANCIAL STATEMENTS 

1. Basis of Presentation

Alpha and Omega Semiconductor Limited is the parent company of all Alpha and Omega Semiconductor subsidiaries.  It 

was incorporated in Bermuda on September 27, 2000 as an exempted limited liability company.  The address of its registered 
office is Clarendon House, 2 Church Street, Hamilton HM 11, Bermuda. 

The accompanying condensed parent company financial statements have been prepared in accordance with Rule 12-04, 

Schedule I of Regulation S-X, as the restricted net assets of its subsidiaries exceed 25% of the consolidated net assets of Alpha 
and Omega Semiconductor Limited and its subsidiaries (the “Company”). 

The parent company records its investment in subsidiaries under the equity method of accounting.  Such investment is 

presented on the balance sheet as "Investment in subsidiaries" and the subsidiaries' net income (loss) are recognized based on 
the effective shareholding percentage as income on equity investment in subsidiaries on the statement of operations.  
Intercompany balances and transactions have not been eliminated.  The revenue recorded represents intercompany 
administrative service fees charged by the parent company starting in fiscal year 2013.

Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. 
GAAP have been condensed or omitted.  The footnote disclosures contain supplemental information relating to the operations 
of the Company and, as such, these statements should be read in conjunction with the notes to the consolidated financial 
statements of the Company.

2. Restricted net assets of subsidiaries 

For a discussion of the Company’s restricted net assets of subsidiaries, see Note 12 of the Company’s consolidated 

financial statements.

3. Commitments and contingencies

In March 2016, the Company executed an agreement with two strategic investment funds owned by the Municipality of 

Chongqing, China to form a joint venture for a new state-of -the-art power semiconductor packaging, testing and wafer 
fabrication facility in Liangjiang New Area of Chongqing.  The Joint Venture is expected to commence its initial production in 
the first half of fiscal 2018.  Under the Joint Venture agreement, the Company is required to contribute $10.0 million in cash, 
equipments and intangible assets within one year from June 30, 2016.

For a discussion of the Company’s commitments and contingencies, see Note 13 to the Company’s consolidated financial 

statements.

100

ALPHA AND OMEGA SEMICONDUCTOR LIMITED
VALUATION AND QUALIFYING ACCOUNTS 
(in thousands) 

SCHEDULE II 

Allowance

Allowance

 Allowance

for Doubtful

for Price

 for Deferred

Accounts

 Adjustments

Tax Assets

$

752

$

13,152

$

2,127

—
(722)

30

—

—

30

—

—

30

$

64,987
(63,576)

14,563

87,189
(82,314)

19,438

90,967
(93,705)
16,700

268

—

2,395

305

—

2,700

194

—

$

2,894

$

June 30, 2013

Additions

Reductions

June 30, 2014

Additions

Reductions

June 30, 2015

Additions

Reductions

June 30, 2016

101

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

caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. 

SIGNATURES

August 26, 2016 

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

By:

/s/    MIKE F. CHANG            

Mike F. Chang

Chief Executive Officer

(Principal Executive Officer)

102

 
 
 
 
POWER OF ATTORNEY 

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and 
appoints Mike F. Chang and Yifan Liang, and each or any one of them, his or her true and lawful attorney-in-fact and agent, 
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 all that said attorneys-in-fact and agents, or any of them, or their or his or her substitutes or substitute, 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 by the following 

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

Signature

Title

Date

/s/    MIKE F. CHANG 

Mike F. Chang, Ph.D.

Chairman of the Board and Chief Executive Officer
(Principal Executive Officer)

August 26, 2016

/s/    YIFAN LIANG        
Yifan Liang

Chief Financial Officer and Corporate Secretary
(Principal Financial Officer and Principal Accounting
Officer)

August 26, 2016

/s/    YUEH-SE HO        
Yueh-Se Ho, Ph.D.

Director and Chief Operating Officer

August 26, 2016

/s/    ROBERT I. CHEN   
Robert I. Chen

Director

/s/    MICHAEL L. PFEIFFER
Michael L. Pfeiffer

Director

/s/    KING OWYANG

Director

King Owyang

/s/    MICHAEL J. SALAMEH     Director

Michael J. Salameh

August 26, 2016

August 26, 2016

August 26, 2016

August 26, 2016

103

 
(b)  Index to Exhibits:  

Number
3.1

Description
Memorandum of Association of Registrant (incorporated by reference to Exhibit 3.1 from
Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

3.2

4.1

10.1

10.2

10.3

10.4

10.5

10.6

10.7††

10.8††

10.9††

10.10††

10.11

10.12††

10.13††

Amended and Restated Bye-laws of Registrant (incorporated by reference to Exhibit 3.1 to the
Current Report on Form 8-K filed with the Commission on November 12, 2015)

Form of Common Share Certificate (incorporated by reference to Exhibit 4.2 from
Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

2000 Share Plan (incorporated by reference to Exhibit 10.1 from Registration Statement on
Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010)

Form of Option Agreement under 2000 Share Plan (incorporated by reference to Exhibit 10.2
from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

2009 Share Option/Share Issuance Plan (incorporated by reference to Exhibit 10.3 from
Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

Form of Option Agreement under 2009 Share Plan  (incorporated by reference to Exhibit 4.4
from Annual Report on Form 20-F (File No. 001-34717) filed with the Commission on
September 2, 2010)

Form of Restricted Share Unit Issuance Agreement under 2009 Share Plan (incorporated by
reference to Exhibit 4.5 from Annual Report on Form 20-F (File No. 001-34717) filed with the
Commission on September 2, 2010)

Employee Share Purchase Plan (incorporated by reference to Exhibit 10.15 from Registration
Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010)

Foundry Agreement dated as of January 10, 2002 between the Registrant and Shanghai Hua
Hong NEC Electronics Company, Limited (incorporated by reference to Exhibit 10.16 from
Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

First Addendum to Foundry Service Agreement dated as of July 28, 2005 between the
Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by
reference to Exhibit 10.17 from Registration Statement on Form F-1 (File No. 333-165823)
initially filed with the Commission on March 31, 2010)

Second Addendum to Foundry Service Agreement dated as of April 11, 2007 between the
Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by
reference to Exhibit 10.18 from Registration Statement on Form F-1 (File No. 333-165823)
filed with the Commission on March 31, 2010)

Foundry Service Agreement dated as of November 3, 2009 between Alpha & Omega
Semiconductor (Macau), Ltd. and Shanghai Hua Hong NEC Electronics Company, Limited
(incorporated by reference to Exhibit 10.6 from Registration Statement on Form F-1 (File No.
333-165823) filed with the Commission on March 31, 2010)

Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha & Omega
Semiconductor (Hong Kong) Limited and Frontek Technology Corporation (incorporated by
reference to Exhibit 4.17 from Annual Report on Form 20-F (File No. 001-34717) filed with
the Commission on September 2, 2010)

Supplement to Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha
& Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation
(incorporated by reference to Exhibit 4.18 from Annual Report on Form 20-F (File No.
001-34717) filed with the Commission on September 2, 2010)

First Amendment of Supplement to Distribution Agreement dated as of April 21, 2011 between
Alpha & Omega Semiconductor (Hong Kong) Limited and Frontek Technology Corporation
(incorporated by reference to Exhibit 10.15 from Annual Report Form 10-K (File No.
001-34717)  filed with the Commission on September 9, 2011)

104

10.14

10.15

10.16††

10.17††

10.18

10.19

10.20

10.21

10.22

10.23

10.24

10.25

10.26

10.27

10.28

10.29

10.30

10.31

Supplement to Distribution Agreement dated as of July 27, 2010 between the Registrant and 
Frontek Technology Corporation (incorporated by reference to Exhibit 10.1 from Quarterly 
Report on Form 10-Q (File No. 001-34717) filed with the Commission on February 6, 2015)

Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha & Omega
Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd. (incorporated by
reference to Exhibit 4.19 from Annual Report on Form 20-F (File No. 001-34717) filed with
the Commission on September 2, 2010)

Supplement to Non-Exclusive Distributor Agreement dated as of July 27, 2010 between Alpha
& Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd.
(incorporated by reference to Exhibit 4.20 from Annual Report on Form 20-F (File No.
001-34717) filed with the Commission on September 2, 2010)

First Amendment of Supplement to Distribution Agreement dated as of April 21, 2011 between
Alpha & Omega Semiconductor (Hong Kong) Limited and Promate Electronic Co., Ltd.
(incorporated by reference to Exhibit 10.18 from Annual Report Form 10-K (File No.
001-34717) filed with the Commission on September 9, 2011)

Supplement to Distribution Agreement dated as of July 27, 2010 between the Registrant and 
Promate Electronic Co., Ltd (incorporated by reference to Exhibit 10.2 from Quarterly Report 
on Form 10-Q (File No. 001-34717) filed with the Commission on February 6, 2015)

Lease dated as of December 23, 2009 between Alpha and Omega Semiconductor Incorporated
and OA Oakmead II, LLC (incorporated by reference to Exhibit 10.19 from Registration
Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010)

Guarantee dated as of January 5, 2010 between the Registrant and OA Oakmead II, LLC
(incorporated by reference to Exhibit 10.20 from Registration Statement on Form F-1 (File No.
333-165823) filed with the Commission on March 31, 2010)

Form of Indemnification Agreement (incorporated by reference to Exhibit 10.11 from
Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

Form of Employment Agreement between the Registrant and Mike F. Chang (incorporated by
reference to Exhibit 10.13 from Registration Statement on Form F-1 (File No. 333-165823)
filed with the Commission on March 31, 2010)

Form of Retention Agreement (incorporated by reference to Exhibit 10.14 from Registration
Statement on Form F-1 (File No. 333-165823) filed with the Commission on March 31, 2010)

Form of Restricted Shares Purchase Agreement (incorporated by reference to Exhibit 10.21
from Registration Statement on Form F-1 (File No. 333-165823) filed with the Commission on
March 31, 2010)

Third Addendum to Foundry Service Agreement dated as of March 6, 2012 by and among the
Registrant and Shanghai Hua Hong NEC Electronics Company, Limited (incorporated by
reference to Exhibit 10.34 from Annual Report on Form 10-K (File No.: 001-34717) filed with
the Commission on August 31, 2012)

Amended Form of Restricted Share Unit Issuance Agreement (incorporated by reference to
Exhibit 10.35 from Annual Report on Form 10-K (File No.: 001-34717) filed with the
Commission on August 31, 2012)

Summary of Fiscal Year 2014 Executive Incentive Plan (incorporated by reference to Exhibit
10.34 from Annual Report on Form 10-K (File No: 001-34717) filed with the Commission on
August 30, 2013)
Form of Director's Share Option Agreement under the Automatic Grant Program (incorporated 
by reference to Exhibit 10.1 from Quarterly Report on Form 10-Q (File No: 001-34717)
filed with the Commission on November 6, 2013)

Amendment to Automatic Grant Program for Non-Employee Directors under the 2009 Share
Option/Share Issuance Plan (incorporated by reference to Exhibit 10.2 from Quarterly Report
on Form 10-Q (File No: 001-34717) filed with the Commission on May 9, 2014)

Form of Restricted Share Unit Agreement (incorporated by reference to Exhibit 10.3 from
Quarterly Report on Form 10-Q (File No: 001-34717) filed with the Commission on May 9,
2014)

Summary of Fiscal Year 2015 Executive Incentive Plan (incorporated by reference to Exhibit
10.39 from Annual Report on Form 10-K (File No. 001-34717) filed with the Commission on
August 29, 2014)

105

10.32

10.33

10.34

10.35

21.1*

23.1*

31.1*

31.2*

32.1*

32.2*

Separation Agreement, dated as of March 26, 2015, between the Company and Dr. Hamza 
Yilmaz (incorporated by reference to Exhibit 10.1 from Registration Statement on Form 8-
K (File No. 001-34717) filed with the Commission on March 27, 2015)

Form of Consulting Agreement between Registrant and Tony Grizelj dated as of August 17,
2015 . (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed with
the Commission on August 5, 2015)

Joint Venture Contract on Incorporation of Chongqing Alpha and Omega Semiconductor
Limited, dated as of March 29, 2016, between the Company, certain subsidiaries of the
Company and Chongqing Funds (English Translation) (incorporated by reference to Exhibit
10.1 to the Quarterly Report on Form 10-Q filed with the Commission on May 10, 2016)

Alpha and Omega Semiconductor Limited Calendar Year 2016 Executive Incentive Plan
(incorporated by reference to Exhibit 10.2 to the Quarterly Report on Form 10-Q filed with the
Commission on May 10, 2016)

List of Subsidiaries of the Registrant

Consent of Grant Thornton LLP, independent registered public accounting firm of Registrant

Certification of Chief Executive Officer required by Rule 13(a)-14(a) under the Exchange Act

Certification of Chief Financial Officer required by Rule 13(a)-14(a) under the Exchange Act

Certification of Chief Executive Officer required by Rule 13a-14(b) under the Exchange Act
and Section 1350 of Chapter 63 of Title 18 of the United States Code

Certification of Chief Financial Officer required by Rule 13a-14(b) under the Exchange Act
and Section 1350 of Chapter 63 of Title 18 of the United States Code

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

* Filed with this Annual Report on Form 10-K.

†† Confidential treatment has been granted for certain information contained in this document pursuant to an order of the 
Securities and Exchange Commission. Such information has been omitted and filed separately with the Securities and 
Exchange Commission.

106

Exhibit 21.1 

SUBSIDIARIES OF THE REGISTRANT

Subsidiary Name
Alpha and Omega Semiconductor Incorporated
Alpha and Omega Semiconductor (Cayman) Ltd.
Alpha and Omega Semiconductor (Shanghai) Co., Ltd.
Alpha & Omega Semiconductor (Shenzhen) Limited
Alpha & Omega Semiconductor (Hong Kong) Limited
Alpha & Omega Semiconductor (Macau), Ltd.
Alpha & Omega Semiconductor (Taiwan) Limited

Agape Package Manufacturing Ltd.
Agape Package Manufacturing (Shanghai) Ltd.
Agape Limited
Jireh Semiconductor Incorporated
Chongqing Alpha and Omega Semiconductor Limited

Incorporated Location
California, United States
Cayman
China
China
Hong Kong
Macau
Taiwan

Cayman
China
Hong Kong
Oregon, United States
Chongqing, China

Percentage Owned
100% owned by AOS
100% owned by AOS
100% owned by AOS
100% owned by AOS
100% owned by AOS
100% owned by AOS
100% owned by AOS

100% owned by AOS
100% owned by AOS
100% owned by AOS
100% owned by AOS
51% owned by AOS

 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

Exhibit 23.1

We have issued our reports dated August 26, 2016, with respect to the consolidated financial statements, schedules, and internal 

control over financial reporting in the Annual Report of Alpha and Omega Semiconductor Limited on Form 10-K for the year 

ended June 30, 2016.  We hereby consent to the incorporation by reference of said reports in the Registration Statements of 

Alpha Omega Semiconductor Limited and on Forms S-8 (File No. 333-207987, effective November 13, 2015; File No. 

333-190935, effective August 30, 2013; File No. 333-186480, effective February 6, 2013; File No. 333-180126, effective 

March 15, 2012; File No. 333-172173, effective February 11, 2011; and File No. 333-166403, effective April 30, 2010).

/s/ GRANT THORNTON LLP 

San Francisco, California 
August 26, 2016 

CERTIFICATION OF CHIEF EXECUTIVE OFFICER 

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.1 

I, Mike F. Chang, certify that: 

1. 

2. 

3. 

4. 

I have reviewed this report on Form 10-K of Alpha and Omega Semiconductor Limited; 

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

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

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

a. 

b. 

c. 

d. 

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

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

Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report 
our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period 
covered by this report based on such evaluation; and 

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

5. 

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

a. 

b. 

All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, 
summarize and report financial information; and 

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

Date: August 26, 2016 

/s/    MIKE F. CHANG

Mike F. Chang

Chief Executive Officer

 
CERTIFICATION OF CHIEF FINANCIAL OFFICER 

CERTIFICATION PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Yifan Liang, certify that: 

Exhibit 31.2 

1. 

2. 

3. 

4. 

I have reviewed this report on Form 10-K of Alpha and Omega Semiconductor Limited; 

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

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

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

a. 

b. 

c. 

d. 

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

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

Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report 
our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period 
covered by this report based on such evaluation; and 

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

5. 

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

a. 

b. 

All significant deficiencies and material weaknesses in the design or operation of internal control over 
financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, 
summarize and report financial information; and 

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

Date: August 26, 2016 

/s/    YIFAN LIANG     

Yifan Liang
Chief Financial Officer
and Corporate Secretary

 
CERTIFICATION OF CHIEF EXECUTIVE OFFICER 
PURSUANT TO 18 U.S.C. § 1350, AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.1 

I, Mike F. Chang, the chief executive officer of Alpha and Omega Semiconductor Limited (the “Company”), certify for 

the purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best 
of my knowledge,

a. 

b. 

the Annual Report of the Company on Form 10-K for the fiscal year ended June 30, 2016 (the “Report”), fully 
complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
the information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

Date: August 26, 2016 

/s/    MIKE F. CHANG   

Mike F. Chang

 Chief Executive Officer

 
CERTIFICATION OF CHIEF FINANCIAL OFFICER 
PURSUANT TO 18 U.S.C. § 1350, AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.2 

I, Yifan Liang, the chief financial officer of Alpha and Omega Semiconductor Limited (the “Company”), certify for the 

purposes of 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of 
my knowledge,

a. 

b. 

the Annual Report of the Company on Form 10-K for the fiscal year ended June 30, 2016 (the “Report”), fully 
complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
the information contained in the Report fairly presents, in all material respects, the financial condition and results of 
operations of the Company.

Date: August 26, 2016

/s/    YIFAN LIANG
Yifan Liang

Chief Financial Officer                                          
and Corporate Secretary