DIODES INC /DEL/ - Annual Report: 2013 (Form 10-K)

Table of Contents

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

For the fiscal year ended December 31, 2013

or

For the transition period from              to             .

Commission file number: 002-25577

DIODES INCORPORATED

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: (972) 987-3900

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

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  þ    No  ¨

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

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

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

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

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

The aggregate market value of the 37,054,621 shares of Common Stock held by non-affiliates of the registrant, based on the closing price of $25.97 per share of the Common Stock on the Nasdaq Global Select Market on June 28, 2013, the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $962,308,507.

The number of shares of the registrant’s Common Stock outstanding as of February 24, 2014 was 46,700,123.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive proxy statement to be filed with the United States Securities and Exchange Commission (“SEC”) pursuant to Regulation 14A in connection with the 2014 annual meeting of stockholders are incorporated by reference into Part III of this Annual Report. The proxy statement will be filed with the SEC not later than 120 days after the registrant’s fiscal year ended December 31, 2013.

Table of Contents

TABLE OF CONTENTS

Table of Contents

PART I

GENERAL

We are a leading global manufacturer and supplier of high-quality, application specific standard products within the broad discrete, logic and analog semiconductor markets, serving the consumer electronics, computing, communications, industrial and automotive markets. These products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC-DC and DC-DC switching, linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. The products are sold primarily throughout Asia, North America and Europe.

We design, manufacture and market these semiconductors for diverse end-use applications. Semiconductors, which provide electronic signal amplification and switching functions, are basic building-blocks that are incorporated into almost every electronic device. We believe that our focus on application-specific standard products utilizing innovative, highly efficient packaging and cost-effective process technologies, coupled with our collaborative, customer-focused product development, gives us a meaningful competitive advantage relative to other semiconductor companies.

Our product portfolio addresses the design needs of advanced electronic equipment, including high-volume consumer devices such as digital media players, smartphones, tablets, notebook computers, flat-panel displays, mobile handsets, digital cameras and set-top boxes. We believe that we have particular strength in designing innovative, highly power efficient semiconductors in miniature packaging for applications with a critical need to minimize product size while maximizing power density and overall performance, and at a lower cost than alternative solutions. Our product line includes over 9,250 products, and we shipped approximately 41 billion units, 32 billion units, and 29 billion units in 2013, 2012 and 2011, respectively. During 2013, we increased our number of products and units sold primarily due to acquisitions. From 2008 to 2013, our net sales grew from $433 million to $827 million, representing a compound annual growth rate of 14%.

We serve approximately 240 direct customers worldwide, which consist of original equipment manufacturers (“OEM”) and electronic manufacturing services (“EMS”) providers. Additionally, we have approximately 115 distributor customers worldwide, through which we indirectly serve over 12,000 customers. During 2013, we increased our number of direct customers and distributor customers primarily due to acquisitions. See “Business—Our Strategy—Pursue selective strategic acquisitions.”

We were incorporated in 1959 in California and reincorporated in Delaware in 1968. Our headquarters, logistics center, and sales office are located in Plano, Texas. Our design, marketing and engineering centers are located in Plano; San Jose, California; Taipei, Taiwan; Manchester, United Kingdom (“U.K”) and Neuhaus, Germany. We have two wafer fabrication facilities in Shanghai, China, one in Kansas City, Missouri and one in Manchester. We also have two manufacturing facilities located in Shanghai and two joint venture manufacturing facilities located in Chengdu, China, as well as manufacturing facilities located in Neuhaus and Taipei. Additional engineering, sales, warehouse and logistics offices are located in Fort Worth, Texas; Taipei; Hsinchu, Taiwan; Hong Kong; Manchester; Shanghai; Shenzhen, China; Seongnam-si, South Korea; Suwon, South Korea, Tokyo, Japan and Munich, Germany, with support offices located throughout the world.

BUSINESS OUTLOOK

Looking forward, we remain focused on achieving our goal of $1 billion in annual revenue with model profitability. The BCD Semiconductor Manufacturing Limited (“BCD”) acquisition has brought us one step closer toward achieving that goal. We have a solid pipeline of designs and expanded customer relationships

- 1 -

Table of Contents

across all regions and product lines. The success of our business depends, among other factors, on the strength of the global economy and the stability of the financial markets, our customers’ demand for our products, the ability of our customers to meet their payment obligations, the likelihood of customers canceling or deferring existing orders and end-user consumers’ demand for items containing our products in the end-markets we serve. We believe the long-term outlook for our business remains generally favorable despite the recent volatility in the global economy and the equity and credit markets as we continue to execute on the strategy that has proven successful for us over the years. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Business Outlook” in Part II, Item 7 and “Risk Factors—The success of our business depends on the strength of the global economy and the stability of the financial markets, and any weaknesses in these areas may have a material adverse effect on our revenues, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

SEGMENT INFORMATION AND ENTERPRISE-WIDE DISCLOSURES

For financial reporting purposes, we operate in a single segment, standard semiconductor products, through our various design, manufacturing and distribution facilities. We sell product primarily through our operations in Asia, North America and Europe. We aggregate our products in a single segment because the products have similar economic characteristics, are similar in production process and manufacturing flow, and share the same customers and target end-equipment markets. See Note 15 of “Notes to Consolidated Financial Statements” of this Annual Report for addition information.

OUR INDUSTRY

Semiconductors are critical components used in the manufacture of a broad range of electronic products and systems. Since the invention of the transistor in 1948, continuous improvements in semiconductor processes and design technologies have led to smaller, more complex and more reliable devices at a lower cost per function. The availability of low-cost semiconductors, together with increased customer demand for sophisticated electronic systems, has led to the proliferation of semiconductors in diverse end-use applications in the consumer electronics, computing, communications, industrial and automotive sectors.

OUR COMPETITIVE STRENGTHS

We believe our competitive strengths include the following:

Flexible, scalable and cost-effective manufacturing—Our manufacturing operations are a core element of our success, and we have designed our manufacturing base to allow us to respond quickly to changes in demand trends in the end-markets we serve. For example, we have structured our Shanghai, China packaging, assembly and test facilities to enable us to rapidly and efficiently add capacity and adjust product mix to meet shifts in customer demand and overall market trends. As a result, we have historically operated our Shanghai manufacturing facilities at near full capacity, while at the same time expanding that capacity to meet our growth objectives. In 2011, we established an additional manufacturing facility for semiconductor packaging, assembly and test in Chengdu, China. Additionally, the Shanghai and Chengdu locations of our manufacturing operations provide us with access to a workforce at a relatively low overall cost base while enabling us to better serve our leading customers, many of which are located in Asia. In 2012, we acquired approximately 51% of the outstanding common stock of Eris Technology Corporation (“Eris”), primarily to obtain its automatic manufacturing capabilities in test and assembly for various diode products. In 2013, we acquired BCD, which has in-house manufacturing capabilities in China, as well as a cost-effective development team that can be deployed across multiple product families. See “Risk Factors—During times of difficult market conditions, our fixed costs combined with lower revenues and lower profit margins may have a negative impact on our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

Integrated packaging expertise—Our expertise in designing and manufacturing innovative and proprietary packaging solutions enables us to package a variety of different device functions into an assortment of packages ranging from miniature chip-scale packaging to packages that integrate multiple separate discrete and/or analog

- 2 -

Table of Contents

chips into a single semiconductor product called an array. Our ability to design and manufacture multi-chip semiconductor solutions as well as advanced integrated devices provides our customers with products of equivalent functionality with fewer individual parts, and at lower overall cost, than alternative products. This combination of integration, functionality and miniaturization makes our products well suited for high-volume consumer devices such as LED televisions, LCD panels, set-top boxes and consumer portables such as smartphones, tablets and notebooks.

Broad customer base and diverse end-markets—Our customers are comprised of leading OEMs as well as major EMS providers. Overall, we serve approximately 240 direct customers worldwide and over 12,000 additional customers through our distributors. Our products are ultimately used in end-products in a number of markets served by our broad customer base, which we believe makes us less susceptible to market fluctuations driven by either specific customers or specific end-user applications.

Customer focused product development—Effective collaboration with our customers and a commitment to customer service are essential elements of our business. We believe focusing on dependable delivery and support tailored to specific end-user applications has fostered deep customer relationships and created a key competitive advantage for us in the highly fragmented discrete, logic and analog semiconductor marketplace. We believe our close relationships with our customers have provided us with keener insight into our customers’ product needs. This results in a stronger demand for our product designs and often provides us with insight into additional opportunities for new design wins in our customers’ products. See “Risk Factors—We are and will continue to be under continuous pressure from our customers and competitors to reduce the price of our products, which could adversely affect our growth and profit margins” in Part I, Item 1A of this Annual Report for additional information.

Management experience—The members of our executive team average over 30 years of industry experience, and the length of their service has created significant institutional insight into our markets, our customers and our operations. See “Risk Factors—We may fail to attract or retain the qualified technical, sales, marketing, finance and management personnel required to operate our business successfully, which could adversely affect on our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

OUR STRATEGY

Our strategy is to continue to enhance our position as a leading global designer, manufacturer and supplier of high-quality application specific standard semiconductor products, utilizing our innovative and cost-effective packaging technology and leveraging our process expertise and design excellence to achieve above-market profitable growth.

The principal elements of our strategy include the following:

Continue to rapidly introduce innovative discrete, logic and analog semiconductor products—We intend to maintain our rapid pace of new product introductions, especially for high-volume, high-growth applications with short design cycles, such as LCD and LED televisions and panels, set-top boxes, portables such as smartphones, tablets and notebooks along with other consumer electronics and computing devices. During 2013, we achieved many significant new design wins at OEMs. Although a design win from a customer does not necessarily guarantee future sales to that customer, we believe that continued introduction of new and well-defined product solutions is critically important in maintaining and extending our market share in the highly competitive semiconductor marketplace. See “Risk Factors—Obsolete inventories as a result of changes in demand for our products and change in life cycles of our products could adversely affect our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

Expand our available market opportunities—We believe we have many paths to increasing our addressable market opportunity. From a product perspective, we intend to continue expanding our portfolio by developing derivative and enhanced performance devices that target adjacent markets and end-equipments. We

- 3 -

Table of Contents

will continue to cultivate new and emerging customers within our targeted markets, further increasing our already broad customer base. As we focus on new customers, we try to expand our product portfolio penetration within these new, as well as existing, customers. As we expand our extensive range of high power efficiency and small form factor packages, we plan to introduce new and existing product functions in these new packages to allow an even greater market range.

Maintain intense customer focus—We intend to continue to strengthen and deepen our customer relationships. We believe that continued focus on customer service is important and will help to increase our net sales, operating performance and overall market share. To accomplish this, we intend to continue to closely collaborate with our customers to design products that meet their specific needs. A critical element of this strategy is to further reduce our design cycle time in order to quickly provide our customers with innovative products. Additionally, to support our customer-focused strategy, we historically expand our sales force and field application engineers, particularly in Asia and Europe, during periods of growth. See “Risk Factors—We are and will continue to be under continuous pressure from our customers and competitors to reduce the price of our products, which could adversely affect our growth and profit margins.” in Part I, Item 1A of this Annual Report for additional information.

Enhance cost competitiveness—A key element of our success is our overall low-cost manufacturing base. While we believe that our Shanghai manufacturing facilities are among the most efficient in the industry, we will continue to refine our proprietary manufacturing processes and technology to achieve additional cost efficiencies. In 2011, we expanded our capacity further by establishing an additional manufacturing facility for semiconductor packaging, assembly and test in Chengdu, China. Historically, we typically operate our Shanghai facilities at near full utilization rates and focus on increasing production yields, in order to achieve meaningful economies of scale.

Pursue selective strategic acquisitions—As part of our strategy to expand our semiconductor product offerings and to maximize our market opportunities, we may acquire discrete, logic, analog or mixed-signal technologies, product lines or companies in order to enhance our portfolio and accelerate our new product offerings. During 2011, we announced an agreement to invest in Eris and acquired approximately 30% of the outstanding common stock. During 2012, we increased our ownership in Eris to approximately 51%. The business scope for Eris comprises Schottky Diodes, TVS Diodes, Zener Diodes, Bridge Diodes, Wafers, LEDs and the relevant devices. Also in 2012, we completed the acquisition of Power Analog Microelectronics, Inc. (“PAM”), a provider of advanced analog and high-voltage power ICs, whose product portfolio includes Class D audio amplifiers, DC-DC converters and LED backlighting drivers. In 2013, we acquired BCD which, with its established presence in Asia and a particularly strong local market position in China, offers us an even greater penetration of the consumer, computing and communications markets. See “Risk Factors—Part of our growth strategy involves identifying and acquiring companies with complementary product lines or customers. We may be unable to identify suitable acquisition candidates or consummate desired acquisitions and, if we do make any acquisitions, we may be unable to successfully integrate any acquired companies with our operations, which could adversely affect our business, results of operations and financial condition” in Part I, Item 1A and Note 17 of “Notes to Consolidated Financial Statements” of this Annual Report for additional information.

OUR PRODUCTS

Our product portfolio includes over 9,250 products that are designed for use in high-volume consumer devices such as LCD and LED televisions and LCD panels, set-top boxes, consumer portables such as smartphones, tablets and notebooks. We target and serve end-equipment markets that we believe have larger volumes than other end-market segments served by the overall semiconductor industry.

Our broad product line includes:

- 4 -

Table of Contents

The following table lists the end-markets, some of the applications in which our products are used, and the percentage of net sales for each end-market for the last three years:

PRODUCT PACKAGING

Our device packaging technology includes a wide variety of innovative surface-mounted packages. Our focus on the development of smaller, more thermally efficient, and increasingly integrated packaging, is a critical component of our product development. We provide a comprehensive offering of miniature high power density packaging, enabling us to fit our components into smaller and more efficient packages, while maintaining the same device functionality and power handling capabilities. Smaller packaging provides a reduction in the height, weight and board space required for our components; as such, our products are well suited for battery-powered, hand-held and wireless consumer applications and high-volume consumer devices such as LCD and LED televisions and LCD panels, set-top boxes and consumer portables such as smartphones, tablets and notebooks.

CUSTOMERS

We serve approximately 240 direct customers worldwide, including major OEMs and EMS companies. Additionally, we have approximately 115 distributor customers worldwide, through which we indirectly serve over 12,000 customers. Our customers include: (i) industry leading OEMs in a broad range of industries, such as Cisco Systems, Inc., Continental AG, Delta Electronics, Emerson, Hella, Ltd., LG Electronics, Inc., Motorola Mobility, Inc., Quanta Computer, Inc., Sagem Communication, and Samsung Electronics Co., Ltd.; (ii) leading EMS providers, such as Celestica, Inc., Flextronics International, Ltd., Hon Hai Precision Industry Co., Ltd., Inventec Corporation, Jabil Circuit, Inc., and Sanmina-SCI Corporation, who build end-market products incorporating our semiconductors for companies such as Apple, Inc., Dell, Inc., EMC Corporation, Intel

- 5 -

Table of Contents

Corporation, Microsoft Corporation, Thompson, Inc. and Roche Diagnostics; and (iii) leading distributors such as Arrow Electronics, Inc., Avnet, Inc., Future Electronics, Rutronic, Yosun Industrial Corporation, and Zenitron Corporation. For the years of 2013, 2012 and 2011, our OEM and EMS customers together accounted for 35%, 47% and 47%, respectively, of our net sales. The decrease in 2013 is mainly due to the fact that the majority of BCD net sales are to distributors.

No customer accounted for 10% or more of our net sales in 2013, 2012 and 2011. In addition, for information concerning our business with related parties, see “Business—Certain relationships and related party transactions.”

We believe that our close relationships with our OEM and EMS customers have provided us with deeper insight into our customers’ product needs. In addition to seeking to expand relationships with our existing customers, our strategy is to pursue new customers and diversify our customer base by focusing on leading global consumer electronics companies and their EMS providers and distributors. See “Risk Factors—Our customers require our products to undergo a lengthy and expensive qualification process without any assurance of product sales, which could adversely affect our revenues, results of operations and financial condition” in Part I, Item 1A of this Annual Report for additional information.

We generally warrant that products sold to our customers will, at the time of shipment, be free from defects in workmanship and materials and conform to our approved specifications. Subject to certain exceptions, our standard warranty extends for a period of one year from the date of shipment. Warranty expense has not been significant. Generally, our customers may cancel orders on short notice without incurring a penalty. See “Risk Factors—Our customer orders are subject to cancellation or modification usually with no penalty. High volumes of order cancellation or reduction in quantities ordered could adversely affect our results of operations and financial condition” in Part I, Item 1A of this Annual Report for additional information.

Many of our customers are based in Asia or have manufacturing facilities in Asia. Net sales by country consists of sales to customers in that country based on the country to which products are shipped. Historically, the Company reported revenues “billed to” customers located in various countries. In 2013, the Company changed to net sales “shipped to” customer locations as it believes the change better represents where the Company’s customers business activities occur. For the year ended December 31, 2013, approximately 63%, 9%, 8%, 6%, 5%, 4% and 5% of our net sales were derived from China, United States (“U.S.”), Korea, Germany, Singapore, Taiwan, and all other markets, respectively, compared to 60%, 10%, 8%, 6%, 4%, 3% and 9% in 2012, respectively.

SALES AND MARKETING

We market and sell our products worldwide through a combination of direct sales and marketing personnel, independent sales representatives and distributors. We have direct sales personnel in the U.S., U.K., France, Germany, Korea, Taiwan and China. We also have independent sales representatives in the U.S., Japan, Korea, and Europe. We currently have distributors in the U.S., Europe and Asia.

As of December 31, 2013, our direct global sales and marketing organization consisted of approximately 190 employees operating out of 16 offices. We have sales and marketing offices or representatives in Taipei, Taiwan; Shanghai and Shenzhen, China; Beauzelle, France; Gyeonggi, South Korea; and Munich, Germany; and we have four regional sales offices in the U.S. As of December 31, 2013, we also had approximately 20 independent sales representative firms marketing our products.

Our marketing group focuses on our product strategy, product development roadmap, new product introduction process, demand assessment and competitive analysis. Our marketing programs include participation in industry tradeshows, technical conferences and technology seminars, sales training and public relations. The marketing group works closely with our sales and research and development groups to align our

- 6 -

Table of Contents

product development roadmap. The marketing group coordinates its efforts with our product development, operations and sales groups, as well as with our customers, sales representatives and distributors. We support our customers through our field application engineering and customer support organizations.

To support our global customer-base, our website is language-selectable into English, Chinese and Korean, giving us an effective marketing tool for worldwide markets. With its extensive online product catalog with advanced search capabilities, our website facilitates quick and easy product selection. Our website, www.diodes.com, provides easy access to our worldwide sales contacts and customer support, as well as incorporates a distributor-inventory check to provide component inventory availability. In addition, our website provides investors access to our financial and corporate governance information.

MANUFACTURING OPERATIONS AND FACILITIES

We operate two manufacturing facilities located in Shanghai, China, one in Neuhaus, Germany, one in Taipei, Taiwan and are developing two joint venture manufacturing facilities located in Chengdu, China. We have two wafer fabrication facilities located in Shanghai, one in Kansas City, Missouri and one in Manchester, U.K. Our manufacturing facilities in Shanghai, Neuhaus and Taipei are packaging, assembly and test manufacturing sites, as is the facility being developed in Chengdu. Our wafer fabrication facilities in Shanghai include two 150mm wafer fabrication centers, our Kansas City facility fabricates 125mm and 150mm wafers, and our Manchester facility fabricates 150mm wafers.

During 2010, we announced an investment agreement with the Management Committee of the Chengdu Hi-Tech Industrial Development Zone (the “CDHT”). Under this agreement, we have agreed to form a joint venture with a Chinese partner, Chengdu Ya Guang Electronic Company Limited, to establish a semiconductor manufacturing facility for surface-mounted component production, assembly and test in Chengdu, China. We initially will own at least 95% of the joint venture. The manufacturing facility will be developed in phases over a ten year period, and in order to qualify for certain financial incentives, we were obligated to contribute at least $48 million to the joint venture by December 31, 2013. The CDHT grants the joint venture a fifty year land lease, provides temporary facilities for up to three years at a subsidized rent while the joint venture builds the manufacturing facility and provides corporate and employee tax incentives, tax refunds, subsidies and other financial support to the joint venture and its qualified employees. This is a long-term, multi-year project that will provide us additional capacity as needed. As of December 31, 2013, we have invested $48 million, primarily for capital expenditures.

For the years ending December 31, 2013 and 2012, we invested approximately $32 million and $50 million, respectively, in plant and state-of-the-art equipment in China ($529 million total investment in China from inception, including costs for acquisitions). Our facilities in China manufacture product for sale by our U.S., Europe and Asia operations. For the years ending December 31, 2013 and 2012, our total capital expenditures were approximately $44 million and $60 million, respectively.

Our manufacturing processes use many raw materials, including silicon wafers, aluminum and copper lead frames, gold and copper wire and other metals, molding compounds and various chemicals and gases. We are continuously evaluating our raw material costs in order to reduce our gold consumption while protecting and maintaining product performance. We have no material agreements with any of our suppliers that impose minimum or continuing supply obligations. From time to time, suppliers may extend lead-times, limit supplies or increase prices due to capacity constraints or other factors. Although we believe that supplies of the raw materials we use are currently and will continue to be available, shortages could occur in various essential materials due to interruption of supply or increased demand in the industry. See “Risk Factors—We depend on third-party suppliers for timely deliveries of raw materials, parts and equipment, as well as finished products from other manufacturers, and our reputation with customers, results of operations and financial condition could be adversely affected if we are unable to obtain adequate supplies in a timely manner.” in Part I, Item 1A of this Annual Report for additional information.

- 7 -

Table of Contents

Our corporate headquarters are located in a facility we own in Plano, Texas. We also lease or own properties around the world for use as sales and administrative offices, research and development centers, manufacturing facilities, warehouses and logistics centers. The size and/or location of these properties can change from time to time based on our business requirements. See “Properties” in Part I, Item 2 of this Annual Report for additional information.

BACKLOG

The amount of backlog to be shipped during any period is dependent upon various factors, and all orders are subject to cancellation or modification, usually with no penalty to the customer. Orders are generally booked from one month to greater than twelve months in advance of delivery. The rate of booking of new orders can vary significantly from month to month. We, and the industry as a whole, have been experiencing a trend towards shorter lead-times, and we expect this trend to continue. The amount of backlog at any date depends upon various factors, including the timing of the receipt of orders, fluctuations in orders of existing product lines, and the introduction of any new lines. Accordingly, we believe that the amount of our backlog at any date is not an accurate measure of our future sales. We strive to maintain proper inventory levels to support our customers’ just-in-time order expectations.

PATENTS, TRADEMARKS AND LICENSES

Historically, patents and trademarks have not been material to our operations, but we expect them to become more important, particularly as they relate to our miniature and power efficient packaging technologies.

Our initial product patent portfolio was primarily composed of discrete technologies. In the late 1990s, our engineers began to research and develop innovative packaging technologies, which produced several important breakthroughs and patents, such as the PowerDI^® series of packaging technology to foster our growth in the semiconductor industry.

PowerDI is a registered trademark of Diodes Incorporated

We acquired Anachip Corp. in early 2006, a fabless semiconductor company, which initiated our presence in the analog product market with a portfolio of standard linear and low dropout regulator products, among others.

Through our acquisition of the assets of APD Semiconductor, Inc. in late 2006, we acquired the SBR^® patents and trademark. SBR^® is a state-of-the-art integrated circuit wafer processing technology, which is able to integrate and improve the benefits of the two existing rectifier technologies into a single device. The creation of a finite conduction cellular IC, combined with inherent design uniformity has allowed manufacturing costs to be kept competitive with the existing power device technology, and thus has produced a breakthrough in rectifier technology.

In 2008, we acquired Zetex, which subsequently increased our available discrete and analog technologies with patents and trademarks for bipolar transistors and power management products such as LED drivers. LED drivers support a wide range of applications for automotive, safety and security, architecture, and portable lighting and are highly efficient and cost effective.

In 2012, we acquired PAM, a provider of advanced analog and high-voltage power ICs. PAM’s product portfolio includes Class D audio amplifiers, DC-DC converters and LED backlighting drivers, which will strengthen our position as a global provider of high-quality and high-efficiency, space-saving analog products by expanding our product portfolio with innovative “filter-less” digital audio amplifiers, application-specific power management ICs, as well as high-performance LED drivers and DC-DC converters.

In 2013, we acquired BCD, a leading supplier of standard linear and power management devices. BCD has a solid product portfolio that includes AC/DC and DC/DC solutions for chargers and power adapters. BCD’s

- 8 -

Table of Contents

established presence in Asia, with a particularly strong local market position in China, offers us even greater participation into the consumer, computing and communications end-markets.

Currently, our licensing of patents to other companies is not material. We do, however, license certain product technology from other companies, but we do not consider any of the licensed technology currently to be material in terms of royalties. We believe the duration and other terms of the licenses are appropriate for our current needs. See “Risk Factors—We may be subject to claims of infringement of third-party intellectual property rights or demands that we license third-party technology, which could result in significant expense, reduction in our intellectual property rights and a negative impact on our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

COMPETITION

Numerous semiconductor manufacturers and distributors serve the discrete, logic and analog semiconductor components market, making competition intense. Some of our larger competitors include Fairchild Semiconductor Corporation, Infineon Technologies A.G., International Rectifier Corporation, NXP Semiconductors N.V., ON Semiconductor Corporation, Rohm Electronics USA, LLC, Toshiba Corporation and Vishay Intertechnology, Inc., many of which have greater financial, marketing, distribution, brand name recognition, research and development, manufacturing and other resources. Accordingly, we from time to time may reposition product lines or decrease prices, which may affect our sales of, and profit margins on, such product lines. The price and quality of the products, and our ability to design products and deliver customer service in keeping with the customers’ needs, determine the competitiveness of our products. We believe that our product focus, packaging expertise and our flexibility and ability to quickly adapt to customer needs affords us competitive advantages. See “Risk Factors—The semiconductor business is highly competitive, and increased competition may harm our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

ENGINEERING AND RESEARCH AND DEVELOPMENT

Our engineering and research and development groups consist of applications, circuit design, and product development engineers who assist in determining the direction of our future product lines. One of their key functions is to work closely with market-leading customers to further refine, expand and improve our product portfolio within our target product types and packages. In addition, customer requirements and acceptance of new package types are assessed and new, higher-density and more energy-efficient packages are developed to satisfy customers’ needs.

Product development engineers work directly with our semiconductor circuit design and layout engineers who develop die designs for products that match our customers’ requirements. We have the capability to capture the customers’ electrical and packaging requirements and translate those requirements into product specifications which can then be designed and manufactured to support customers’ end-system applications.

For the years ended December 31, 2013, 2012 and 2011, company-sponsored investment in research and development activities was approximately $48 million, $34 million and $27 million, respectively. As a percentage of net sales, research and development expense was approximately 6%, 5% and 4% for 2013, 2012 and 2011, respectively. The dollar amount and percentage increase in 2013 was primarily due to the acquisition of BCD.

EMPLOYEES

As of December 31, 2013, we employed a total of 6,151 employees, of which 5,339 of our employees were in Asia and includes approximately 1,950 independent contractors, 354 were in the U.S. and 458 were in Europe. None of our employees in Asia or the U.S. are subject to a collective bargaining agreement, but a majority of our

- 9 -

Table of Contents

employees in Europe are covered by local labor agreements. We consider our relations with our employees to be satisfactory. See “Risk Factors—We may fail to attract or retain the qualified technical, sales, marketing, finance and management personnel required to operate our business successfully, which could adversely affect on our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

ENVIRONMENTAL MATTERS

We are subject to a variety of U.S. federal, state, local and foreign governmental laws, rules and regulations related to the use, storage, handling, discharge or disposal of certain toxic, volatile or otherwise hazardous chemicals used in our manufacturing process in China, the U.S. and the U.K. where our wafer fabrication facilities are located, and in China, Taiwan and Germany where our packaging, assembly and test facilities are located. Any of these regulations could require us to acquire equipment or to incur substantial other costs to comply with environmental regulations or remediate problems. For the years ended December 31, 2013, 2012 and 2011, our capital expenditures for environmental controls have not been material. As of December 31, 2013, there were no known environmental claims or recorded liabilities. See “Risk Factors—We are subject to many environmental laws and regulations that could result in significant expenses and could adversely affect our business, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

We conduct business with one related party company, Lite-On Semiconductor Corporation and its subsidiaries and affiliates (collectively, “LSC”). LSC is our largest stockholder, owning approximately 18% of our outstanding Common Stock as of December 31, 2013. We also conduct business with one significant company, Keylink International (B.V.I.) Inc. and its subsidiaries and affiliates (collectively, “Keylink”). Keylink is a 5% joint venture partner in our Shanghai manufacturing facilities. The Audit Committee reviews all related party transactions for potential conflict of interest situations on an ongoing basis. We believe that all related party transactions are on terms no less favorable to us than would be obtained from unaffiliated third parties. For more information concerning our relationships with LSC and Keylink, see “Risk Factors—One of our largest external suppliers is also a related party. The loss of this supplier could harm our business, results of operations and financial condition.” in Part I, Item 1A and Note 14 of “Notes to Consolidated Financial Statements” of this Annual Report for additional information.

SEASONALITY

Historically, our net sales have been affected by the cyclical nature of the semiconductor industry and the seasonal trends of related end-markets, specifically in the consumer and computing markets. See Note 18 (unaudited) of “Notes to Consolidated Financial Statements” of this Annual Report for additional information on our quarterly results.

AVAILABLE INFORMATION

Our website address is http://www.diodes.com. We make available, free of charge through our website, our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, proxy statements, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after such material is electronically filed with or furnished to the Securities and Exchange Commission (the “SEC”).

Our filings may also be read and copied at the SEC’s Public Reference Room at 100 F Street NE, Room 1580 Washington, DC 20549. Information on the operation of the Public Reference Room may be obtained by calling the SEC at 1-800-SEC-0330. The SEC also maintains an Internet site (http://www.sec.gov) that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC.

- 10 -

Table of Contents

Our website also provides investors access to financial and corporate governance information including our Code of Business Conduct, as well as press releases, and stock quotes. The contents of our website are not incorporated by reference into this Annual Report on Form 10-K.

Cautionary Statement for Purposes of the “Safe Harbor” Provision of the Private Securities Litigation Reform Act of 1995

Many of the statements included in this Annual Report on Form 10-K contain forward-looking statements and information relating to our company. We generally identify forward-looking statements by the use of terminology such as “may,” “will,” “could,” “should,” “potential,” “continue,” “expect,” “intend,” “plan,” “estimate,” “anticipate,” “believe,” “project,” or similar phrases or the negatives of such terms. We base these statements on our beliefs as well as assumptions we made using information currently available to us. Such statements are subject to risks, uncertainties and assumptions, including those identified in “Risk Factors,” as well as other matters not yet known to us or not currently considered material by us. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated, estimated or projected. Given these risks and uncertainties, prospective investors are cautioned not to place undue reliance on such forward-looking statements. Forward-looking statements do not guarantee future performance and should not be considered as statements of fact.

You should not unduly rely on these forward-looking statements, which speak only as of the date of this Annual Report on Form 10-K. Unless required by law, we undertake no obligation to publicly update or revise any forward-looking statements to reflect new information or future events or otherwise. The Private Securities Litigation Reform Act of 1995 (the “Act”) provides certain “safe harbor” provisions for forward-looking statements. All forward-looking statements made on this Annual Report on Form 10-K are made pursuant to the Act.

Investing in our Common Stock involves a high degree of risk. You should carefully consider the following risks and other information in this report before you decide to buy our Common Stock. Our business, financial condition or operating results may suffer if any of the following risks are realized. Additional risks and uncertainties not currently known to us may also adversely affect our business, financial condition or operating results. If any of these risks or uncertainties occurs, the trading price of our Common Stock could decline and you could lose part or all of your investment.

RISKS RELATED TO OUR BUSINESS

The success of our business depends on the strength of the global economy and the stability of the financial markets, and any weaknesses in these areas may have a material adverse effect on our revenues, results of operations and financial condition.

Weaknesses in the global economy and financial markets can lead to lower consumer discretionary spending and demand for items that incorporate our products in the consumer electronics, computing, industrial, communications and the automotive sectors. A decline in end-user demand can affect our customers’ demand for our products, the ability of our customers to meet their payment obligations and the likelihood of customers canceling or deferring existing orders. Our revenues, operating results and financial condition could be negatively affected by such actions.

During times of difficult market conditions, our fixed costs combined with lower revenues and lower profit margins may have a negative impact on our business, results of operations and financial condition.

The semiconductor industry is characterized by high fixed costs. Notwithstanding our utilization of third-party manufacturing capacity, most of our production requirements are met by our own manufacturing facilities. In difficult economic environments, we could be faced with a decline in the utilization rates of our manufacturing

- 11 -

Table of Contents

facilities due to decreases in product demand. During such periods, our manufacturing facilities do not operate at full capacity and the costs associated with this excess capacity are expensed immediately and not capitalized into inventory. When our utilization rates decline to abnormally low production levels, we generally experience lower gross margins. The market conditions in the future may adversely affect our utilization rates and consequently our future gross margins, and this, in turn, could have a material negative impact on our business, results of operations and financial condition.

Downturns in the highly cyclical semiconductor industry and/or changes in end-market demand could adversely affect our results of operations and financial condition.

The semiconductor industry is highly cyclical, and periodically experiences significant economic downturns characterized by diminished product demand, production overcapacity and excess inventory, which can result in rapid erosion in average selling prices. From time to time, the semiconductor industry experiences order cancellations and reduced demand for products, resulting in significant revenue declines, due to excess inventories at end-equipment manufacturers and general economic conditions, especially in the technology sector. The market for semiconductors may experience renewed, and possibly more severe and prolonged downturns, which may harm our results of operations and financial condition.

In addition, we operate in a few narrow markets of the broader semiconductor market and, as a result, cyclical fluctuations may affect these segments to a greater extent than they do to the broader semiconductor market. This may cause us to experience greater fluctuations in our results of operations and financial condition than compared to some of our broad line semiconductor manufacturer competitors. In addition, we may experience significant changes in our profitability as a result of variations in sales, changes in product mix, changes in end-user markets and the costs associated with the introduction of new products. The markets for our products depend on continued demand in the consumer electronics, computing, communications, industrial and automotive sectors. These end-user markets also tend to be cyclical and may also experience changes in demand that could adversely affect our results of operations and financial condition.

The semiconductor business is highly competitive, and increased competition may harm our business, results of operations and financial condition.

The semiconductor industry in which we operate is highly competitive. We expect intensified competition from existing competitors and new entrants. Competition is based on price, product performance, product availability, quality, reliability and customer service. We compete in various markets with companies of various sizes, many of which are larger and have greater resources or capabilities as it relates to financial, marketing, distribution, brand name recognition, research and development, manufacturing and other resources than we have. As a result, they may be better able to develop new products, market their products, pursue acquisition candidates and withstand adverse economic or market conditions. Most of our current major competitors are broad line semiconductor manufacturers who often have a wider range of product types and technologies than we do. In addition, companies not currently in direct competition with us may introduce competing products in the future. Some of our current major competitors are Fairchild Semiconductor Corporation, Infineon Technologies A.G., International Rectifier Corporation, NXP Semiconductors N.V., ON Semiconductor Corporation, Rohm Electronics USA, LLC, Toshiba Corporation and Vishay Intertechnology, Inc. We may not be able to compete successfully in the future, and competitive pressures may harm our business, results of operations and financial condition.

One of our largest external suppliers is also a related party. The loss of this supplier could harm our business, results of operations and financial condition.

In 2013, 2012 and 2011, LSC, our largest stockholder, accounted for approximately 1%, of our net sales. LSC is also one of our largest suppliers, providing us with discrete semiconductor products for subsequent sale by us, which represented approximately 2%, 3% and 5%, respectively, of our net sales, in 2013, 2012 and 2011.

- 12 -

Table of Contents

The loss of LSC as a supplier, could materially harm our business, results of operations and financial condition.

Delays in initiation of production at facilities due to implementing new production techniques or resolving problems associated with technical equipment malfunctions could adversely affect our manufacturing efficiencies, results of operations and financial condition.

Our manufacturing efficiency has been and will be an important factor in our future profitability, and we may not be able to maintain or increase our manufacturing efficiency. Our manufacturing and testing processes are complex, require advanced and costly equipment and are continually being modified in our efforts to improve yields and product performance. Difficulties in the manufacturing process can lower yields. Technical or other problems could lead to production delays, order cancellations and lost revenue. In addition, any problems in achieving acceptable yields, construction delays, or other problems in upgrading or expanding existing facilities, building new facilities, bringing new manufacturing capacity to full production or changing our process technologies, could also result in capacity constraints, production delays and a loss of future revenues and customers. Our operating results also could be adversely affected by any increase in fixed costs and operating expenses related to increases in production capacity if net sales do not increase proportionately, or in the event of a decline in demand for our products.

Our wafer fabrication facilities are located in Shanghai, China, Kansas City, Missouri, and Manchester, United Kingdom (“U.K.”), while our manufacturing facilities in Shanghai, Taipei, Taiwan and Neuhaus, Germany, perform packaging, assembly and test functions and our manufacturing facilities in Chengdu, China are for surface-mounted component production, assembly and test functions. Any disruption of operations at these facilities could have a material adverse effect on our manufacturing efficiencies, results of operations and financial condition.

We are and will continue to be under continuous pressure from our customers and competitors to reduce the price of our products, which could adversely affect our growth and profit margins.

Prices for our products tend to decrease over their life cycle. There is substantial and continuing pressure from customers to reduce the total cost of purchasing our products. To remain competitive and retain our customers and gain new ones, we must continue to reduce our costs through product and manufacturing improvements. We must also strive to minimize our customers’ shipping and inventory financing costs and to meet their other goals for rationalization of supply and production. We experienced a decrease in average selling prices (“ASP”) for our products of 2% in 2011, a decrease of 10% in 2012 and an increase of 5% in 2013. At times, we may be required to sell our products at ASP below our manufacturing costs or purchase prices in order to remain competitive. Our growth and the profit margins of our products will suffer if we cannot effectively continue to reduce our costs and keep our product prices competitive.

Our customers require our products to undergo a lengthy and expensive qualification process without any assurance of product sales, which could adversely affect our revenues, results of operations and financial condition.

Prior to purchasing our products, our customers require that our products undergo an extensive qualification process, which involves rigorous reliability testing. This qualification process may continue for six months or longer. However, qualification of a product by a customer does not ensure any sales of the product to that customer. Even after successful qualification and sales of a product to a customer, a subsequent revision to the product, changes in the product’s manufacturing process or the selection of a new supplier by us may require a new qualification process, which may result in delays and in us holding excess or obsolete inventory. After our products are qualified, it can take an additional six months or more before the customer commences volume production of components or devices that incorporate our products. Despite these uncertainties, we devote substantial resources, including design, engineering, sales, marketing and management efforts, toward qualifying

- 13 -

Table of Contents

our products with customers in anticipation of sales. If we are unsuccessful or delayed in qualifying any of our products with a customer, such failure or delay would preclude or delay sales of such product to the customer, which may adversely affect our revenues, results of operations and financial condition.

Our customer orders are subject to cancellation or modification usually with no penalty. High volumes of order cancellation or reduction in quantities ordered could adversely affect our revenues, results of operations and financial condition.

All of our customer orders are subject to cancellation or modification, usually with no penalty to the customer. Orders are generally made on a purchase order basis, rather than pursuant to long-term supply contracts, and are booked from one to twelve months in advance of delivery. The rate of booking new orders can vary significantly from month to month. We, and the semiconductor industry as a whole, are experiencing a trend towards shorter lead-times, which is the amount of time between the date a customer places an order and the date the customer requires shipment. Furthermore, our industry is subject to rapid changes in customer outlook and periods of excess inventory due to changes in demand in the end-markets our industry serves. As a result, many of our purchase orders are revised, and may be cancelled, with little or no penalty and with little or no notice. However, we must still commit production and other resources to fulfilling these purchase orders even though they may ultimately be cancelled. If a significant number of purchase orders are cancelled or product quantities ordered are reduced, and we are unable to timely generate replacement orders, we may build up excess inventory and our revenues, results of operations and financial condition may suffer.

Production at our manufacturing facilities could be disrupted for a variety of reasons, including natural disasters and other extraordinary events, which could prevent us from producing enough of our products to maintain our sales and satisfy our customers’ demands and could adversely affect our results of operations and financial condition.

A disruption in production at our manufacturing facilities could have a material adverse effect on our business. Disruptions could occur for many reasons, including fire, floods, hurricanes, typhoons, droughts, tsunamis, volcanoes, earthquakes, disease or other similar natural disasters, unplanned maintenance or other manufacturing problems, labor shortages, power outages or shortages, telecommunications failures, strikes, transportation interruption, government regulation, terrorism or other extraordinary events. Such disruptions may cause direct injury or damage to our employees and property and related internal controls with significant indirect consequences. Alternative facilities with sufficient capacity or capabilities may not be available, may cost substantially more or may take a significant time to start production, each of which could negatively affect our business and financial performance. If one of our key manufacturing facilities is unable to produce our products for an extended period of time, our sales may be reduced by the shortfall caused by the disruption, and we may not be able to meet our customers’ needs, which could cause them to seek other suppliers. Such disruptions could have an adverse effect on our results of operations and financial condition.

New technologies could result in the development of new products by our competitors and a decrease in demand for our products, and we may not be able to develop new products to satisfy changes in demand, which would adversely affect our net sales, market share, results of operations and financial condition.

Our product range and new product development program are focused on discrete, logic and analog semiconductor products. Our failure to develop new technologies, or anticipate or react to changes in existing technologies, either within or outside of the semiconductor market, could materially delay development of new products, which could result in a decrease in our net sales and a loss of market share to our competitors. The semiconductor industry is characterized by rapidly changing technologies and industry standards, together with frequent new product introductions. This includes the development of new types of technology or the improvement of existing technologies, such as analog and digital technologies that compete with, or seek to replace, discrete semiconductor technology. Our financial performance depends on our ability to design, develop, manufacture, assemble, test, market and support new products and product enhancements on a timely and cost-

- 14 -

Table of Contents

effective basis. New products often command higher prices and, as a result, higher profit margins. We may not successfully identify new product opportunities or develop and bring new products to market or succeed in selling them into new customer applications in a timely and cost-effective manner.

Products or technologies developed by other companies may render our products or technologies obsolete or noncompetitive, and since we operate primarily in a narrower segment of the broader semiconductor industry, this may have a greater effect on us than it would if we were a broad-line semiconductor manufacturer with a wider range of product types and technologies. Many of our competitors are larger and more established international companies with greater engineering and research and development resources than us. Our failure to identify or capitalize on any fundamental shifts in technologies in our product markets, relative to our competitors, could harm our business, have a material adverse effect on our competitive position within our industry and harm our relationships with our customers. In addition, to remain competitive, we must continue to reduce package sizes, improve manufacturing yields and expand our sales. We may not be able to accomplish these goals, which would adversely affect our net sales, market share, results of operations and financial condition.

We may be adversely affected by any disruption in our information technology systems, which could adversely affect our cash flows, results of operations and financial condition.

Our operations are dependent upon our information technology systems, which encompass all of our major business functions. We rely upon such information technology systems to manage and replenish inventory, to fill and ship customer orders on a timely basis, to coordinate our sales activities across all of our products and services and to coordinate our administrative activities. A substantial disruption in our information technology systems for any prolonged 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 and similar disruptions affecting 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.

As our operations grow in both size and scope, we will continuously need to improve and upgrade our systems and infrastructure while maintaining the reliability and integrity of our systems and infrastructure. The expansion of our systems and infrastructure will require us to commit substantial financial, operational and technical resources before the volume of our business increases, with no assurance that the volume of business will increase. In particular, we have upgraded our financial reporting system and are currently seeking to upgrade other information technology systems. These and any other upgrades to our systems and information technology, or new technology, now and in the future, will require that our management and resources be diverted from our core business to assist in compliance with those requirements. There can be no assurance that the time and resources our management will need to devote to these upgrades, service outages or delays due to the installation of any new or upgraded technology (and customer issues therewith), or the impact on the reliability of our data from any new or upgraded technology will not have a material adverse effect on our cash flows, results of operations and financial condition.

A significant portion of our operations operate on a single Enterprise Resource Planning (ERP) platform. To manage our international operations efficiently and effectively, we rely heavily on our ERP system, internal electronic information and communications systems and on systems or support services from third parties. Any of these systems are subject to electrical or telecommunications outages, computer hacking or other general system failure. It is also possible that future acquisitions will operate on ERP systems different from ours and that we could face difficulties in integrating operational and accounting functions of new acquisitions. Difficulties in upgrading or expanding our ERP system or system-wide or local failures that affect our information processing could have a material adverse effect on our cash flows, results of operations and financial condition.

- 15 -

Table of Contents

We may be subject to claims of infringement of third-party intellectual property rights or demands that we license third-party technology, which could result in significant expense, reduction in our intellectual property rights and a negative impact on our business, results of operations and financial condition.

The semiconductor industry is characterized by vigorous protection and pursuit of intellectual property rights. From time to time, third parties have asserted, and may in the future assert, patent, copyright, trademark and other intellectual property rights to technology that is important to our business and have demanded, and may in the future demand, that we license their patents and technology. Any litigation to determine the validity of allegations that our products infringe or may infringe these rights, including claims arising through our contractual indemnification of our customers, or claims challenging the validity of our patents, regardless of its merit or resolution, could be costly and divert the efforts and attention of our management and technical personnel. We may not prevail in litigation given the complex technical issues and inherent uncertainties in intellectual property litigation. If litigation results in an adverse ruling, we could be required to:

We depend on third-party suppliers for timely deliveries of raw materials, parts and equipment, as well as finished products from other manufacturers, and our reputation with customers, results of operations and financial condition could be adversely affected if we are unable to obtain adequate supplies in a timely manner.

Our manufacturing operations depend upon obtaining adequate supplies of raw materials, parts and equipment on a timely basis from third parties. Our results of operations could be adversely affected if we are unable to obtain adequate supplies of raw materials, parts and equipment in a timely manner or if the costs of raw materials, parts or equipment were to increase significantly. Our business could also be adversely affected if there is a significant degradation in the quality of raw materials used in our products, or if the raw materials give rise to compatibility or performance issues in our products, any of which could lead to an increase in customer returns or product warranty claims. Although we maintain rigorous quality control systems, errors or defects may arise from a supplied raw material and be beyond our detection or control. Any interruption in, or change in quality of, the supply of raw materials, parts or equipment needed to manufacture our products could adversely affect our reputation with customers, results of operations and financial condition.

In addition, we sell finished products from other manufacturers. Our business could also be adversely affected if there is a significant degradation in the quality of these products. From time to time, such manufacturers may extend lead-times, limit supplies or increase prices due to capacity constraints or other factors. We have no long-term purchase contracts with any of these manufacturers and, therefore, have no contractual assurances of continued supply, pricing or access to finished products that we sell, and any such manufacturer could discontinue supplying to us at any time. Additionally, some of our suppliers of finished products or wafers compete directly with us and may in the future choose not to supply products to us.

- 16 -

Table of Contents

If we do not succeed in continuing to vertically integrate our business, we will not realize the cost and other efficiencies we anticipate, which could adversely affect our ability to compete, results of operations and financial condition.

We are continuing to vertically integrate our business. Key elements of this strategy include continuing to expand the reach of our sales organization, expand our manufacturing capacity, expand our wafer foundry and research and development capability and expand our marketing, product development, package development and assembly/test operations in company-owned facilities or through the acquisition of established contractors. There are certain risks associated with our vertical integration strategy, including:

The risks of becoming a fully integrated manufacturer are amplified in an industry-wide slowdown because of the fixed costs associated with manufacturing facilities. In addition, we may not realize the cost, operating and other efficiencies that we expect from continued vertical integration. If we fail to successfully vertically integrate our business, our ability to compete, profit margins, results of operations and financial condition may suffer.

Part of our growth strategy involves identifying and acquiring companies with complementary product lines or customers. We may be unable to identify suitable acquisition candidates or consummate desired acquisitions and, if we do make any acquisitions, we may be unable to successfully integrate any acquired companies with our operations, which could adversely affect our business, results of operations and financial condition.

A significant part of our growth strategy involves acquiring companies with complementary product lines, customers or other capabilities. For example, (i) in 2000, we acquired FabTech, Inc., a wafer fabrication company, in order to have our own wafer manufacturing capabilities, (ii) in 2006, we acquired Anachip Corp. as an entry into the analog market, (iii) in 2006, we acquired the net operating assets of APD Semiconductor, Inc., (iv) in 2008, we acquired Zetex plc., (v) in 2012, we acquired over 50% of the outstanding common stock of Eris Technology Corporation, (vi) also in 2012, we acquired Power Analog Microelectronics, Inc., and (vii) in 2013, we acquired BCD Semiconductor Manufacturing Limited. In addition, from time to time, we may be in various stages of discussions with potential acquisition targets as we intend to continue to expand and diversify our operations by making further acquisitions. However, we may be unsuccessful in identifying suitable acquisition candidates, or we may be unable to consummate a desired acquisition. To the extent we do make acquisitions, if we are unsuccessful in integrating these companies or their operations or product lines with our operations, or if integration is more difficult than anticipated, we may experience disruptions that could have a material adverse effect on our business, results of operations and financial condition. In addition, we may not realize all of the benefits we anticipate from any such acquisitions. Some of the risks that may affect our ability to integrate or realize any anticipated benefits from acquisitions that we may make include those associated with:

- 17 -

Table of Contents

We are subject to litigation risks, including securities class action litigation, which may be costly to defend and the outcome of which is uncertain and could adversely affect our business and financial condition.

All industries, including the semiconductor industry, are subject to legal claims, with and without merit, including securities class action litigation that may be particularly costly and which may divert the attention of our management and our resources in general. We are involved in a variety of legal matters, most of which we consider either routine matters that arise in the normal course of business or immaterial for our aggregate business operations. These routine matters typically fall into broad categories such as those involving suppliers and customers, employment and labor, and intellectual property. We believe it is unlikely that the final outcome of these legal claims will have a material adverse effect on our financial position, results of operations or cash flows. However, defense and settlement costs can be substantial, even with respect to claims that we believe have no merit. Due to the inherent uncertainty of the litigation process, the resolution of any particular legal claim or proceeding could have a material effect on our business, financial condition, results of operations or cash flows.

As mentioned above, from time to time, we have been, or may in the future be, involved in securities litigation or litigation arising from our acquisitions. We can provide no assurance as to the outcome of any such litigation matter in which we are a party. These types of matters are costly to defend and even if resolved in our favor, could have a material adverse effect on our business, financial condition, results of operations and cash flow. Such litigation could also substantially divert the attention of our management and our resources in general. Uncertainties resulting from the initiation and continuation of securities or other litigation could harm our ability to obtain credit and financing for our operations and to compete in the marketplace. Because the price of our Common Stock has been, and may continue to be, volatile, we can provide no assurance that securities litigation will not be filed against us in the future. In addition, we can provide no assurance that our past or future acquisitions will not subject us to additional litigation. See Part I, Item 3 “Legal Proceedings” of this Annual Report for more information on our legal proceedings.

We are subject to many environmental laws and regulations that could result in significant expenses and could adversely affect our business, results of operations and financial condition.

We are subject to a variety of U.S. federal, state, local and foreign governmental laws, rules and regulations related to the use, storage, handling, discharge or disposal of certain toxic, volatile or otherwise hazardous chemicals used in manufacturing our products throughout the world. Some of these regulations in the U.S. include the Federal Clean Water Act, Clean Air Act, Resource Conservation and Recovery Act, Comprehensive Environmental Response, Compensation, and Liability Act and similar state statutes and regulations. Any of these regulations could require us to acquire equipment or to incur substantial other expenses to comply with environmental regulations. If we were to incur such additional expenses, our product costs could significantly increase, materially affecting our business, financial condition and results of operations. Any failure to comply with present or future environmental laws, rules and regulations could result in fines, suspension of production or cessation of operations, any of which could have a material adverse effect on our business, results of operations and financial condition. Our operations affected by such requirements include, among others: the disposal of wastewater containing residues from our manufacturing operations through publicly operated treatment works or

- 18 -

Table of Contents

sewer systems, and which may be subject to volume and chemical discharge limits and may also require discharge permits; and the use, storage and disposal of materials that may be classified as toxic or hazardous. Any of these may result in, or may have resulted in, environmental conditions for which we could be liable.

Some environmental laws impose liability, sometimes without fault, for investigating or cleaning up contamination on, or emanating from, our currently or formerly owned, leased or operated properties, as well as for damages to property or natural resources and for personal injury arising out of such contamination. Such liability may also be joint and several, meaning that we could be held responsible for more than our share of the liability involved, or even the entire liability. In addition, the presence of environmental contamination could also interfere with ongoing operations or adversely affect our ability to sell or lease our properties. Environmental requirements may also limit our ability to identify suitable sites for new or expanded plants. Discovery of contamination for which we are responsible, the enactment of new laws and regulations, or changes in how existing requirements are enforced, could require us to incur additional costs for compliance or subject us to unexpected liabilities.

Our products may be found to be defective and, as a result, warranty claims and product liability claims may be asserted against us, which may harm our business, reputation with our customers, results of operations and financial condition.

Our products are typically sold at prices that are significantly lower than the cost of the equipment or other goods in which they are incorporated. For example, our products that are incorporated into a television may be sold for several cents, whereas the television maker might sell the television for several hundred dollars. Although we maintain rigorous quality control systems, we shipped approximately 41 billion, 32 billion and 29 billion individual semiconductor devices in years ending December 31, 2013, 2012 and 2011, respectively, to customers around the world, and in the ordinary course of our business, we receive warranty claims and product liability claims for some of these products that are defective, or that do not perform to published specifications. Since a defect or failure in our products could give rise to failures in the end-products that incorporate them (and consequential claims for damages against our customers from their customers), we may face claims for damages that are disproportionate to the revenues and profits we receive from the products involved. In addition, our ability to reduce such liabilities may be limited by the laws or the customary business practices of the countries where we do business. Even in cases where we do not believe we have legal liability for such claims, we may choose to pay for them to retain a customer’s business or goodwill or to settle claims to avoid protracted litigation. Our results of operations and business could be adversely affected as a result of a significant quality or performance issue in our products, if we are required or choose to pay for the damages that result. Although we currently have liability insurance, we may not have sufficient insurance coverage, and we may not have sufficient resources, to satisfy all possible warranty claims and product liability claims. In addition, any perception that our products are defective would likely result in reduced sales of our products, loss of customers and harm to our business, reputation, results of operations and financial condition.

We may fail to attract or retain the qualified technical, sales, marketing, finance and management personnel required to operate our business successfully, which could adversely affect our business, results of operations and financial condition.

Our future success depends, in part, upon our ability to attract and retain highly qualified technical, sales, marketing, finance and managerial personnel. Personnel with the necessary expertise are scarce and competition for personnel with these skills is intense. We may not be able to retain existing key technical, sales, marketing, finance and managerial employees or be successful in attracting, assimilating or retaining other highly qualified technical, sales, marketing, finance and managerial personnel in the future. For example, we have faced, and continue to face, intense competition for qualified technical and other personnel in China, where our assembly, test and packaging facilities are located. A number of U.S. and multi-national corporations, both in the semiconductor industry and in other industries, have recently established and are continuing to establish factories and plants in China, and the competition for qualified personnel has increased significantly as a result. If we are

- 19 -

Table of Contents

unable to retain existing key employees or are unsuccessful in attracting new highly qualified employees, our business, results of operations and financial condition could be materially and adversely affected.

We may not be able to achieve future growth, and any such growth may place a strain on our management and on our systems and resources, which could adversely affect our business, results of operations and financial condition.

Our ability to successfully grow our business within the semiconductor industry requires effective planning and management. Our past growth, and our targeted future growth, may place a significant strain on our management and on our systems and resources, including our financial and managerial controls, reporting systems and procedures. In addition, we will need to continue to train and manage our workforce worldwide. If we are unable to effectively plan and manage our growth effectively, our business and prospects will be harmed and we will not be able to maintain our profit growth or achieve future growth, which could adversely affect our business, results of operations and financial condition.

Obsolete inventories as a result of changes in demand for our products and change in life cycles of our products could adversely affect our business, results of operations and financial condition.

The life cycles of some of our products depend heavily upon the life cycles of the end-products into which our products are designed. End-market products with short life cycles require us to manage closely our production and inventory levels. Inventory may also become obsolete because of adverse changes in end-market demand. We may in the future be adversely affected by obsolete or excess inventories, which may result from unanticipated changes in the estimated total demand for our products or the estimated life cycles of the end-products into which our products are designed. In addition, some customers restrict how far back the date of manufacture for our products can be and certain customers may stop ordering products from us and go out of business due to adverse economic conditions; therefore, some of our product inventory may become obsolete and, thus, adversely affect our business, results of operations and financial condition.

If OEMs do not design our products into their applications, our net sales may be adversely affected.

We expect an increasingly significant portion of net sales will come from products we design specifically for our customers. However, we may be unable to achieve these design wins. In addition, a design win from a customer does not guarantee future sales to that customer. Without design wins from OEMs, we would only be able to sell our products to these OEMs as a second source, which usually means we are only able to sell a limited amount of product to them. Once an OEM designs another supplier’s semiconductors into one of its product platforms, it is more difficult for us to achieve future design wins with that OEM’s product platform because changing suppliers involves significant cost, time, effort and risk to an OEM. Achieving a design win with a customer does not ensure that we will receive significant revenues from that customer, and we may be unable to convert design wins into actual sales. Even after a design win, the customer is not obligated to purchase our products and can choose at any time to stop using our products, if, for example, its own products are not commercially successful.

We are subject to interest rate risk that could have an adverse effect on our cost of working capital and interest expenses, which could adversely affect our business, results of operations and financial condition.

We have credit facilities with financial institutions in the U.S., Asia and Europe, as well as other debt instruments, with interest rates equal to LIBOR or similar indices plus a negotiated margin. Our largest credit facility is our five-year $300 million revolving senior credit facility, which had $179 million outstanding as of December 31, 2013. A rise in interest rates could have an adverse impact upon our cost of working capital and our interest expense. As of December 31, 2013, an increase of 1% in interest rates on our credit facilities would increase our annual interest rate expense by less than $1 million.

- 20 -

Table of Contents

We may have a significant amount of debt with various financial institutions worldwide. Any indebtedness could adversely affect our business, results of operations, financial condition and our ability to meet our payment obligations under such debt.

We may have a significant amount of debt and substantial debt service requirements in our borrowings, including our credit facilities with various financial institutions worldwide. During 2013, we obtained a five-year $300 million revolving senior credit facility with Bank of America, N.A., which had $179 million outstanding as of December 31, 2013. In addition, as of December 31, 2013, we had an aggregate outstanding debt of $6 million on our lines of credit, which an additional $7 million was used for import and export guarantees under our credit facilities with various financial institutions worldwide. As of December 31, 2013 an aggregate amount of $99 million was available for future borrowings under our lines of credit and $121 million under our revolving senior credit facility. We are permitted under the terms of our debt agreements under various credit facilities to incur substantial additional debt.

A significant amount of debt could have significant consequences on our future operations, including:

Any of the above-listed factors could have an adverse effect on our business, results of operations, financial condition and our ability to meet our payment obligations under our debt.

Restrictions in our credit facilities may limit our business and financial activities, including our ability to obtain additional capital in the future.

During 2013, we entered into a Credit Agreement with Bank of America, N.A., as administrative agent for the lenders under the credit agreement, which provides for a five-year $300 million revolving senior credit facility, which includes $10 million swing line sublimit, a $10 million letter of credit sublimit, and $20 million alternative currency sublimit. In addition, we may from time to time request increases in the aggregate commitment under the Credit Agreement of up to $200 million, subject to the lenders electing to increase their commitments or by means of the addition of new lenders.

This Credit Agreement contains covenants imposing various restrictions on our business and financial activities. These restrictions may affect our ability to operate our business and undertake certain financial activities and may limit our ability to take advantage of potential business or financial opportunities as they arise. The restrictions these covenants place on us include limitations on our ability to incur liens, incur indebtedness, make investments, dissolve or merge or consolidate with or into another entity, dispose of certain property, make restricted payments, issue or sell equity interests, engage in other different material lines of business, conduct

- 21 -

Table of Contents

related party transactions, enter into certain burdensome contractual obligations and use proceeds from any credit facility to purchase or carry margin stock or to extend credit to others for the same purpose. The Credit Agreement also requires us to meet certain financial ratios, including a fixed charge coverage ratio and a consolidated leverage ratio.

Our ability to comply with the Credit Agreement may be affected by events beyond our control, including prevailing economic, financial and industry conditions, and are subject to the risks stated in this section of the Annual Report. The breach of any of these covenants or restrictions could result in a default under the Credit Agreement. An event of default under the Credit Agreement would permit Bank of America, N.A. to declare all amounts owed under such Credit Agreement to be immediately due and payable in full. Acceleration of our indebtedness may cause us to be unable to make interest payments for the credit facilities and repay the principal amount of the credit facilities. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Debt instruments” in Part II, Item 7 of this Annual Report for additional information.

Our business benefits from certain Chinese government incentives. Expiration of, or changes to, these incentives could adversely affect our results of operations and financial condition.

The Chinese government has provided various incentives to technology companies, including our manufacturing facilities located in Shanghai, China, in order to encourage development of the high-tech industry. These incentives include reduced tax rates and other measures. As a result, we are entitled to a preferential enterprise income tax rate of 15% so long as our manufacturing facilities continue to maintain their High and New Technology Enterprise “HNTE” status. One of our Shanghai manufacturing facilities has been approved for its HNTE status for the tax years 2011-2013. For 2014 and future years, this facility no longer qualifies for the HNTE status and therefore all of its future and deferred income will be taxed at the statutory tax rate of 25%. Our other Shanghai manufacturing facility has been approved for its HNTE status for the tax years 2012-2014. In addition, one of our wafer fabrication facilities located in Shanghai has been approved for its HNTE status for the tax years 2011-2013. We expect this facility to be approved for its HNTE status for tax year 2014 . Any prior years that have already been approved are subject to audits to ensure all requirements are met. If we were to no longer meet the HNTE requirements, our statutory tax rate for our approved Shanghai manufacturing facility and wafer fabrication facility would increase to 25%, which could adversely affect our results of operations and financial condition.

During 2012, the China government began an audit of our largest Chinese subsidiary for our 2009-2011 HNTE status as part of an overall evaluation of the reduced tax rates provided to many high tech companies. In April 2013, we were notified by the China government that they had completed their tax audit and had concluded that we owed additional tax related to tax year 2011 in the amount of $5 million, which was paid during 2013.

In connection with our joint venture in Chengdu, China, we have qualified for tax incentives offered in the Go West Initiative (“Go West”), where companies are entitled to a preferential income tax rate of 15% for doing business in western China. If we were to no longer meet the Go West requirements, our statutory tax rate for this joint venture would increase to 25%, which could adversely affect our results of operations and financial condition.

The impact of our Go West and HNTE status, collectively called tax holidays, decreased our tax expense by approximately $2 million, $6 million and $7 million for the years ended December 31, 2013, 2012 and 2011, respectively. The benefit of the tax holidays on both basic and diluted earnings per share for the year ended December 31, 2013 was approximately $0.05. The benefit of the tax holidays on basic and diluted earnings per share for the year ended December 31, 2012 was approximately $0.14 and $0.13, respectively. The benefit of the tax holidays on both basic and diluted earnings per share for the year ended December 31, 2011 was approximately $0.15.

- 22 -

Table of Contents

We operate a global business through numerous foreign subsidiaries, and there is a risk that tax authorities will challenge our transfer pricing methodologies and/or legal entity structures, which could adversely affect our results of operations and financial condition.

We conduct operations worldwide through our foreign subsidiaries, and are therefore subject to complex transfer pricing regulations in the jurisdictions in which we operate. Transfer pricing regulations generally require that, for tax purposes, transactions between related parties be priced on a basis that would be comparable to an arm’s length transaction between unrelated parties. There is uncertainty and inherent subjectivity in complying with these rules. To the extent that any foreign tax authorities disagree with our transfer pricing policies, we could become subject to significant tax liabilities and penalties. Based on our current knowledge and probability assessment of potential outcomes, we believe that we have provided for all tax exposures. However, the ultimate outcome of a tax examination could differ materially from our provisions and could have a material adverse effect on our business, financial condition, results of operations or cash flows.

Our legal organizational structure could result in unanticipated unfavorable tax or other consequences which could have a material adverse effect on our financial condition and results of operations. In some countries, we maintain multiple entities for tax or other purposes. Changes in tax laws, regulations, future jurisdictional profitability of the Company and its subsidiaries, and related regulatory interpretations in the countries in which we operate may impact the taxes we pay or tax provision we record, which could have a material adverse effect on our results of operations. In addition, any challenges to how our entities are structured or realigned or their business purpose by taxing authorities could result in the Company becoming subject to significant tax liabilities and penalties which could have a material adverse effect on our business, financial condition, results of operations or cash flows.

The value of our benefit plan assets and liabilities is based on estimates and assumptions, which may prove inaccurate and the actual amount of expenses recorded in the consolidated financial statements could differ materially from the assumptions used.

Certain of our employees in the U.K. participate in a company-sponsored defined benefit, which is closed to new entrants and is frozen with respect to future benefit accruals. The retirement benefit is based on the final average compensation and service of each eligible employee. In accounting for these plans, we are required to make actuarial assumptions that are used to calculate the earning value of the related assets, where applicable, and liabilities and the amount of expenses to be recorded in our consolidated financial statements. Assumptions include the expected return on plan assets, discount rates, and mortality rates. While we believe the underlying assumptions under the projected unit credit method are appropriate, the carrying value of the related assets and liabilities and the actual amount of expenses recorded in the consolidated financial statements could differ materially from the assumptions used.

Changes in actuarial assumptions for our defined benefit plan could increase the volatility of the plan’s asset value, require us to increase cash contributions to the plan and have a negative impact on our cash flows, results of operations and financial condition.

The assets of our defined benefit plan (the “plan”) consist primarily of high quality, corporate bonds and stocks traded on the London Stock Exchange and are determined from time to time based on their fair value, requiring us to utilize certain actuarial assumptions for the plan’s fair value determination.

As of December 31, 2013, the benefit obligation of the plan was approximately $149 million and the total assets in such plan were approximately $117 million. Therefore, the plan was underfunded by approximately $33 million. The difference between plan obligations and assets, or the funded status of the plan, is a significant factor in determining the net periodic benefit costs of the plan and the ongoing funding requirements of the plan.

Any fluctuations in the United Kingdom’s equity markets and bond markets or changes in several key actuarial assumptions, including, but not limited to, changes in discount rate, estimated return on the plan and

- 23 -

Table of Contents

mortality rates, can (i) affect the level of plan funding; (ii) cause volatility in the net periodic pension cost; and (iii) increase our future funding requirements. In the event that actual results differ from the actuarial assumptions or actuarial assumptions are changed, the funding status of the plan may change. Any deficiency in the funding of the plan could result in additional charges to equity and an increase in future plan expense and cash contribution. A significant increase in our funding requirements could have a negative impact on our cash flows, results of operations and financial condition.

In 2012, we adopted a payment plan with the trustees of the defined benefit plan, in which we will pay approximately £2 million GBP (approximately $3 million based on a USD:GBP exchange rate of 1.6:1) every year from 2012 through 2019.

Certain of our customers and suppliers require us to comply with their codes of conduct, which may include certain restrictions that may substantially increase the cost of our business as well as have an adverse effect on our operating efficiencies, results of operations and financial condition.

Certain of our customers and suppliers require us to agree to comply with the Electronic Industry Code of Conduct (“EICC”) or their own codes of conduct, which may include detailed provisions on labor, human rights, health and safety, environment, corporate ethics and management systems. Certain of these provisions are not requirements under the laws of the countries in which we operate and may be burdensome to comply with on a regular basis. Moreover, new provisions may be added or material changes may be made to any these codes of conduct, and we may have to promptly implement such new provisions or changes, which may substantially further increase the cost of our business, be burdensome to implement and adversely affect our operational efficiencies and results of operations. If we violate any such codes of conduct, we may lose further business with the customer or supplier and, in addition, we may be subject to fines from the customer or supplier. While we believe that we are currently in compliance with our customers and suppliers’ codes of conduct, there can be no assurance that, from time to time, if any one of our customers and suppliers audits our compliance with such code of conduct, we would be found to be in full compliance. A loss of business from these customers or suppliers could have a material adverse effect on our business, results of operations and financial conditions.

Compliance with government regulations and customer demands regarding the use of “conflict minerals” may result in increased costs and may have a negative impact on our business, results of operations and financial condition.

The Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 imposes new disclosure requirements regarding the use of certain minerals, which are mined from the Democratic Republic of Congo and adjoining countries, known as conflict minerals. When these new requirements are implemented, they could affect the pricing, sourcing and availability of minerals used in the manufacture of semiconductor devices (including our products). There will be additional costs associated with complying with the disclosure requirements, such as costs related to determining the source of any conflict minerals used in our products. Our supply chain is complex and we may be unable to verify the origins for all metals used in our products. Customers may demand that the products they purchase be free of conflict minerals. Therefore, we may encounter challenges with our customers and stockholders if we are unable to certify that our products are conflict free. The implementation of this requirement could affect the sourcing and availability of products we purchase from suppliers. This may reduce the number of suppliers that may be able to provide conflict free products, and may affect our ability to obtain products in sufficient quantities to meet customer demand or at competitive prices. The disclosure rules will take effect for us in May 2014.

There are risks associated with previous and future acquisitions. We may ultimately not be successful in overcoming these risks or any other problems encountered in connection with acquisitions.

The risks commonly encountered in acquisitions of companies include, among other things, higher than anticipated acquisition costs and expenses, the difficulty and expense in integrating the operations and personnel of the companies, the difficulty of bringing standards, procedures and controls into conformance with our

- 24 -

Table of Contents

operations, the ability to coordinate our new products and process development, the ability to hire additional management and other critical personnel, the ability to increase the scope, geographic diversity and complexity of our operations, difficulties in consolidating facilities and transferring processes and know-how, difficulties in reducing costs, prolonged diversion of our management’s attention from the management of our business, the ability to clearly define our present and future strategies, the loss of key employees and customers as a result of changes in management and any geographic distances may make integration slower and more challenging. We may ultimately not be successful in overcoming these risks or any other problems encountered in connection with acquisitions.

In addition, any acquisition may cause large one-time expenses as well as create goodwill and other intangible assets that may result in significant asset impairment charges in the future.

If we fail to maintain an effective system of internal controls or discover material weaknesses in our internal control over financial reporting, we may not be able to report our financial results accurately or detect fraud, which could harm our business and the trading price of our Common Stock.

Effective internal controls are necessary for us to produce reliable financial reports and are important in our effort to prevent financial fraud. We are required to periodically evaluate the effectiveness of the design and operation of our internal controls. These evaluations may result in the conclusion that enhancements, modifications or changes to our internal controls are necessary or desirable. While management evaluates the effectiveness of our internal controls on a regular basis, these controls may not always be effective. There are inherent limitations on the effectiveness of internal controls, including collusion, management override, and failure of human judgment. Because of this, control procedures are designed to reduce rather than eliminate business risks. If we fail to maintain an effective system of internal controls or if management or our independent registered public accounting firm were to discover material weaknesses in our internal controls, we may be unable to produce reliable financial reports or prevent fraud, which could harm our financial condition and results of operations and result in loss of investor confidence and a decline in our stock price.

Terrorist attacks, or threats or occurrences of other terrorist activities, whether in the United States or internationally, may affect the markets in which our Common Stock trades, the markets in which we operate and our results of operations and financial condition.

Terrorist attacks, or threats or occurrences of other terrorist or related activities, whether in the United States or internationally, may affect the markets in which our Common Stock trades, the markets in which we operate and our profitability. Future terrorist or related activities could affect our domestic and international sales, disrupt our supply chains and impair our ability to produce and deliver our products. Such activities could affect our physical facilities or those of our suppliers or customers. Such terrorist attacks could cause seaports or airports, to or through which we ship, to be shut down, thereby preventing the delivery of raw materials and finished goods to or from our manufacturing facilities in China, Taiwan and Germany and our wafer fabrication facilities in China, Missouri and the U.K., or to our regional sales offices. Due to the broad and uncertain effects that terrorist attacks have had on financial and economic markets generally, we cannot provide any estimate of how these activities might affect our future results of operations and financial condition.

System security risks, data protection breaches, cyber-attacks and other related cybersecurity issues could disrupt our internal operations, and any such disruption could reduce our expected revenue, increase our expenses, damage our reputation and adversely affect our stock price.

Experienced computer programmers and hackers may be able to penetrate our security controls and misappropriate or compromise our confidential information or that of third parties, create system disruptions or cause shutdowns. Computer programmers and hackers also may be able to develop and deploy viruses, worms and other malicious software programs that attack our websites, products or otherwise exploit any security vulnerabilities of our websites and products. The costs to us to eliminate or alleviate cyber or other security

- 25 -

Table of Contents

problems, bugs, viruses, worms, malicious software programs and security vulnerabilities could be significant, and our efforts to address these problems may not be successful and could result in interruptions, delays, cessation of service and loss of existing or potential customers that may impede our sales, manufacturing, distribution or other critical functions.

We manage and store various proprietary information and sensitive or confidential data relating to our business and third party business. Breaches of our security measures or the accidental loss, inadvertent disclosure or unapproved dissemination of proprietary information or sensitive or confidential data about us or our partners or customers, including the potential loss or disclosure of such information or data as a result of fraud, trickery or other forms of deception, could expose us, our partners and customers or the individuals affected to a risk of loss or misuse of this information, result in litigation and potential liability for us, damage our brand and reputation or otherwise harm our business. In addition, the cost and operational consequences of implementing further data protection measures could be significant.

Delayed sales, significant costs or lost customers resulting from these system security risks, data protection breaches, cyber-attacks and other related cybersecurity issues could adversely affect our financial results, stock price and reputation.

RISKS RELATED TO OUR INTERNATIONAL OPERATIONS

Our international operations subject us to risks that could adversely affect our operations.

We expect net sales from foreign markets to continue to represent a significant portion of our total net sales. In addition, the majority of our manufacturing facilities are located overseas in China. In 2013, 2012 and 2011, our Asian and European subsidiaries represented 91%, 90% and 88%, respectively, of our net sales. There are risks inherent in doing business internationally, and any or all of the following factors could cause harm to our business:

We have significant operations and assets in China, the United Kingdom, Germany, Hong Kong and Taiwan and, as a result, will be subject to risks inherent in doing business in those jurisdictions, which may adversely affect our financial performance and results of operations.

We have a significant portion of our assets in mainland China, United Kingdom, Germany, Hong Kong and Taiwan. Our ability to operate in these countries may be adversely affected by changes in those jurisdictions’ laws and regulations, including those relating to taxation, import and export tariffs, environmental regulations,

- 26 -

Table of Contents

land use rights, property and other matters. In addition, our results of operations and financial performance are subject to the economic and political situations. We believe that our operations are in compliance with all applicable legal and regulatory requirements. However, the central or local governments of these jurisdictions may impose new, stricter regulations or interpretations of existing regulations that would require additional expenditures and efforts on our part to ensure our compliance with such regulations or interpretations.

Changes in the political environment or government policies in those jurisdictions could result in revisions to laws or regulations or their interpretation and enforcement, increased taxation, restrictions on imports, import duties or currency revaluations. In addition, a significant destabilization of relations between or among China, the United Kingdom, Germany, Hong Kong, Taiwan and the U.S. could result in restrictions or prohibitions on our operations or the sale of our products or the forfeiture of our assets in these jurisdictions. There can be no certainty as to the application of the laws and regulations of these jurisdictions in particular instances. Enforcement of existing laws or agreements may be sporadic and implementation and interpretation of laws inconsistent. Moreover, there is a high degree of fragmentation among regulatory authorities, resulting in uncertainties as to which authorities have jurisdiction over particular parties or transactions. The possibility of political conflict between these countries or with the U.S. could have an adverse impact upon our ability to transact business in these jurisdictions and to generate profits.

A slowdown in the Chinese economy could limit the growth in demand for electronic devices containing our products, which would have a material adverse effect on our business, results of operations and prospects.

We believe that an increase in demand in China for electronic devices that include our products will be an important factor in our future growth. Although the Chinese economy has grown significantly in recent years, there can be no assurance that such growth will continue. Any weakness in the Chinese economy could result in a decrease in demand for electronic devices containing our products and, thereby, materially and adversely affect our business, results of operations and prospects.

Economic regulation in China could materially and adversely affect our business, results of operations and prospects.

We have a significant portion of our manufacturing capacity in China. In addition, in 2013 36% of our total sales were billed to customers in China. In recent years, the Chinese economy has experienced periods of rapid expansion and wide fluctuations in the rate of inflation. In response to these factors, the Chinese government has, from time to time, adopted measures to regulate growth and contain inflation, including measures designed to restrict credit or control prices. Such actions in the future could increase the cost of doing business in China or decrease the demand for our products in China and, thereby, have a material adverse effect on our business, results of operations and prospects.

We could be adversely affected by violations of the United States’ Foreign Corrupt Practices Act, the United Kingdom’s Bribery Act 2010 and similar worldwide anti-bribery laws.

The United States’ Foreign Corrupt Practices Act (“FCPA”), the United Kingdom’s Bribery Act 2010 (the “UK Bribery Act”) and similar anti-bribery laws in other jurisdictions generally prohibit companies and their intermediaries from making improper payments to government officials for the purpose of obtaining or retaining business. Our policies mandate compliance with these anti-bribery laws. We operate in many parts of the world that may have experienced governmental corruption to some degree and, in certain circumstances, strict compliance with anti-bribery laws may conflict with local customs and practices. We train our staff concerning FCPA, the UK Bribery Act and related anti-bribery laws. We have established procedures and controls to monitor internal and external compliance. There can be no assurance that our internal controls and procedures always will protect us from reckless or criminal acts committed by our employees or agents. If we are found to be liable for FCPA, the UK Bribery Act and other anti-bribery law violations (either due to our own acts or inadvertence, or due to the acts or inadvertence of others), we could incur criminal or civil penalties or other sanctions, which could have a material adverse effect on our business.

- 27 -

Table of Contents

We are subject to foreign currency risk as a result of our international operations.

We face exposure to adverse movements in foreign currency exchange rates, principally the Chinese Yuan, the Taiwanese dollar, the Euro and the British Pound Sterling and, to a lesser extent, the Japanese Yen and the Hong Kong dollar. Our income and expenses are based on a mix of currencies and a decline in one currency relative to the other currencies could adversely affect our results of operations. Furthermore, our results of operations are reported in U.S. dollars, which is our reporting currency. In the event the U.S. dollar weakens against a foreign currency, we will experience a currency transaction loss, which could adversely affect our results of operations. Also, fluctuations in foreign currency exchange rates may have an adverse impact and be increasingly influential to our overall sales, profits and results of operations as amounts that are measured in foreign currency are translated back to U.S. dollars for reporting purposes. Our foreign currency risk may change over time as the level of activity in foreign markets grows and could have an adverse impact upon our financial results, especially as the portion of our sales attributable to Europe increases. We do not usually employ hedging techniques designed to mitigate foreign currency exposures and, therefore, we could experience currency losses as these currencies fluctuate against the U.S. dollar.

China is experiencing rapid social, political and economic change, which has increased labor costs and other related costs that could make doing business in China less advantageous than in prior years. Increased labor costs in China could adversely affect our business, results of operations and financial condition.

Historically, labor in China has been readily available at a lower cost compared to other countries, and any increase in labor cost in China has been consistent with the projected annual increase in the inflation index and the amount of past labor cost increases. However, because China is experiencing rapid social, political and economic change, there can be no assurance that labor will continue to be available in China at costs consistent with historical levels. Any future increase in labor cost in China is likely to be higher than historical and projected amounts and may occur multiple times in any given year. As a result of experiencing such rapid social, political and economic change, China is also likely to enact new, and/or revise its existing, labor laws and regulations on employee compensation and benefits. These changes in Chinese labor laws and regulations will likely to have an adverse effect on product manufacturing costs in China. Furthermore, if China workers go on strike to demand higher wages, our operations could be disrupted. Many of our suppliers are currently dealing with labor shortages in China, which may result in future supply delays and disruptions and may drive a substantial increase in their labor costs that is likely to be shared by us in the form of price increases to us. New or revised government labor laws or regulations, strikes or labor shortages could cause our product costs to rise and/or could cause manufacturing partners on whom we rely to exit the business. These events could have a material adverse impact on our product availability and quality, which would affect our business, results of operations and financial condition.

We may not continue to receive preferential tax treatment in Asia, thereby increasing our income tax expense and reducing our net income.

As an incentive for establishing our manufacturing subsidiaries in China, we received preferential tax treatment. We also receive preferential tax treatment in Taiwan. Governmental changes in foreign tax law may cause us not to be able to continue receiving these preferential tax treatments in the future, which may cause an increase in our income tax expense, thereby reducing our net income.

The distribution of any earnings of our foreign subsidiaries to the United States may be subject to United States income taxes, thus reducing our net income.

With the establishment of our holding companies in 2007 and 2011, we intend to permanently reinvest overseas all earnings from foreign subsidiaries. Although we intend to permanently reinvest overseas all earnings, certain unusual circumstances may require us to repatriate funds. This was the case during the first quarter of 2009, in which we repatriated approximately $29 million of accumulated earnings from one of our Chinese subsidiaries, resulting in additional non-cash U.S. federal and state income tax expense of approximately $5 million.

- 28 -

Table of Contents

As of December 31, 2013, accumulated and undistributed earnings of our subsidiaries in China were approximately $354 million, which we consider as a permanent investment.

As of December 31, 2013, we have undistributed earnings from non-U.S. operations of approximately $430 million (including approximately $45 million of restricted earnings, which are not available for dividends). Additional U.S. federal and state income taxes of approximately $101 million would be required should such earnings be repatriated to the U.S.

We may, in the future, plan to distribute earnings of our foreign subsidiaries to the U.S. We may be required to pay U.S. income taxes on these earnings to the extent we have not previously recorded deferred U.S. taxes on such earnings. Any such taxes would reduce our net income in the period in which these earnings are distributed.

RISKS RELATED TO OUR COMMON STOCK

Variations in our quarterly operating results may cause our stock price to be volatile.

We have experienced substantial variations in net sales, gross profit margin and operating results from quarter to quarter. We believe that the factors that influence this variability of quarterly results include:

Accordingly, a comparison of our results of operations from period to period is not necessarily meaningful to investors and our results of operations for any period do not necessarily indicate future performance. Variations in our quarterly results may trigger volatile changes in our stock price.

General or industry specific market conditions or stock market performance or domestic or international macroeconomic and geopolitical factors unrelated to our performance also may affect the price of our stock. For these reasons, investors should not rely on recent or historical trends to predict future stock prices, financial condition, results of operations or cash flows. In addition, as discussed in Part I, Item 3 “Legal Proceedings” of this Annual Report, we are involved in several lawsuits. Additional volatility in the price of our securities could result in the filing of additional litigation, which could result in substantial costs and the diversion of management time and resources.

We may enter into future acquisitions and take certain actions in connection with such acquisitions that could adversely affect the price of our Common Stock.

As part of our growth strategy, we expect to review acquisition prospects that would implement our vertical integration strategy or offer other growth opportunities. From time to time, we may be in various stages of

- 29 -

Table of Contents

discussions and we may acquire businesses, products or technologies in the future. In the event of future acquisitions, we could:

Such actions by us could harm our results from operations and adversely affect the price of our Common Stock.

Our directors, executive officers and significant stockholders hold a substantial portion of our Common Stock, which may lead to conflicts with other stockholders over corporate transactions and other corporate matters.

Our directors, executive officers and our affiliate, LSC, beneficially own approximately 28% of our outstanding Common Stock, including options to purchase shares of our Common Stock that are exercisable within 60 days of December 31, 2013. These stockholders, acting together, will be able to influence significantly all matters requiring stockholder approval, including the election of directors and significant corporate transactions such as mergers or other business combinations. This control may delay, deter or prevent a third party from acquiring or merging with us, which could adversely affect the market price of our Common Stock.

LSC, our largest stockholder, owns approximately 18% (approximately 8 million shares) of our Common Stock. Some of our directors and executive officers may have potential conflicts of interest because of their positions with LSC or their ownership of LSC common stock. Raymond Soong, the Chairman of the Board of Directors, is the Chairman of LSC, and is the Chairman of Lite-On Technology Corporation, a significant shareholder of LSC. C.H. Chen, our former President and Chief Executive Officer and currently the Vice Chairman of the Board of Directors, is also Vice Chairman of LSC and Lite-On Technology Corporation. Dr. Keh-Shew Lu, our President and Chief Executive Officer and a member of our Board of Directors, is a member of the Board of Directors of Lite-On Technology Corporation. L.P. Hsu, a member of the Board of Directors since 2007, serves as a consultant to Lite-On Technology Corporation. Several of our directors and executive officers own LSC common stock and hold options to purchase LSC common stock. Service on our Board of Directors and as a director or officer of LSC, or ownership of LSC common stock by our directors and executive officers, could create, or appear to create, actual or potential conflicts of interest when directors and officers are faced with decisions that could have different implications for LSC and us. For example, potential conflicts could arise in connection with decisions involving the Common Stock owned by LSC, or under the other agreements we may enter into with LSC. In each of 2013, 2012 and 2011, LSC accounted for approximately 1% of our net sales. Also, in 2013, 2012 and 2011, approximately 2%, 3% and 5%, respectively, of our net sales were from products manufactured by LSC, making LSC one of our largest external suppliers of discrete semiconductor products.

We may have difficulty resolving any potential conflicts of interest with LSC, and even if we do, the resolution may be less favorable than if we were dealing with an unrelated third party.

We were formed in 1959, and our early corporate records are incomplete. As a result, we may have difficulty in assessing and defending against claims relating to rights to our Common Stock purporting to arise during periods for which our records are incomplete.

We were formed in 1959 under the laws of California and reincorporated in Delaware in 1968. We have had several transfer agents since being formed. In addition, our early corporate records, including our stock ledger,

- 30 -

Table of Contents

are incomplete. As a result, we may have difficulty in assessing and defending against claims relating to rights to our Common Stock purporting to arise during periods for which our records are incomplete.

Non-cash tender offers, debt equity swaps or equity exchanges to consummate our business activities are likely to have the effect of diluting the ownership interest of existing stockholders, including qualified stockholders who receive shares of our Common Stock in such business activities.

We, from time to time, may utilize non-cash tender offers, debt equity swaps or equity exchanges in accordance with the guidance and rules promulgated by the United States Securities and Exchange Commission to consummate our business activities. Such means to consummate our business activities will likely involve issuance of our Common Stock in large quantities and will subsequently dilute the ownership interest of existing stockholders, including stockholders who previously received shares of our Common Stock in such transactions. Any sales in the public market of the newly issued Common Stock could adversely affect prevailing market prices of our Common Stock. In addition, utilizing non-cash tender offers, debt equity swaps or equity exchanges may encourage short selling because such utilization could depress the price of our Common Stock.

Anti-takeover effects of certain provisions of Delaware law and our Certificate of Incorporation and Bylaws, may hinder a take-over attempt.

Some provisions of Delaware law, our certificate of incorporation and bylaws may be deemed to have an anti-takeover effect and may delay or prevent a tender offer or takeover attempt, including those attempts that might result in a premium over the market price for the shares held by stockholders.

Section 203 of Delaware General Corporation Law may deter a take-over attempt.

Section 203 of the Delaware General Corporation Law prohibits transactions between a Delaware corporation and an “interested stockholder,” which is defined as a person who, together with any affiliates or associates, beneficially owns, directly or indirectly, 15.0% or more of the outstanding voting shares of a Delaware corporation. This provision prohibits certain business combinations between an interested stockholder and a Delaware corporation for a period of three years after the date the stockholder becomes an interested stockholder, unless:

For this purpose, business combinations include mergers, consolidations, sales or other dispositions of assets having an aggregate value in excess of 10.0% of the aggregate market value of the consolidated assets or outstanding stock of the corporation, and certain transactions that would increase the interested stockholder’s proportionate share ownership in the corporation.

Certificate of Incorporation and Bylaw Provisions may deter a take-over attempt.

Provisions of our certificate of incorporation and bylaws may have the effect of making it more difficult for a third party to acquire control of our Company. In particular, our certificate of incorporation authorizes our Board of Directors to issue, without further action by the stockholders, up to 1,000,000 shares of preferred stock with rights and preferences, including voting rights, designated from time to time by the Board of Directors.

- 31 -

Table of Contents

The existence of authorized but unissued shares of preferred stock enables our Board of Directors to render it more difficult or to discourage an attempt to obtain control of us by means of a merger, tender offer, proxy contest or otherwise.

None

Our primary physical properties at December 31, 2013 were as follows:

We believe our current facilities are adequate for the foreseeable future.

- 32 -

Table of Contents

We are currently a party to a purported stockholder derivative action in the United States District Court for the District of Delaware, entitled Scherer v. Keh-Shew Lu, Civil Action No. 1:13-cv-00358-UNA (D. Del. filed Mar. 5, 2013), on behalf of the Company against its directors, in which plaintiff alleges that (a) the Board approved awards of stock options to Dr. Keh-Shew Lu, our President and Chief Executive Officer, in 2009, 2010, 2011 and 2012 that exceeded the limitation on the number of shares of the Company’s Common Stock that may be purchased upon the exercise of options granted to any person in any given year under the Company’s 2001 Omnibus Equity Incentive Plan as amended by the stockholders on May 28, 2009; (b) the Company’s disclosures in its 2010, 2011 and 2012 proxy statements regarding the limitation on the number of shares of the Company’s Common Stock that may be purchased upon the exercise of options granted to any person in any given year under the Company’s 2001 Omnibus Equity Incentive Plan as amended by the stockholders on May 28, 2009 were inaccurate; and (c) the Company’s disclosures in its 2010, 2011 and 2012 proxy statements that the grants of stock options to Dr. Lu in 2009, 2010, 2011 and 2012 complied with the terms of the Company’s 2001 Omnibus Equity Incentive Plan as amended by the stockholders on May 28, 2009 were incorrect. The Compensation Committee reviewed the grants of stock options to Dr. Lu in 2009, 2010, 2011 and 2012 (each such annual grant, an “Option Grant”), and approved a Confirmation Agreement, dated April 1, 2013, in which the Company and Dr. Lu agreed and confirmed that Dr. Lu will assert no claim that any Option Grant in 2009, 2010, 2011 or 2012 provided for the purchase of more than 100,000 shares of the Company’s Common Stock, and that each Option Grant document be deemed amended to reflect the foregoing 100,000 share limitation. On April 3, 2013, defendants and the Company filed answers to the complaint. On May 8, 2013, defendants filed a motion for judgment on the pleadings dismissing the action on the ground that the claims are moot. On June 24, 2013, the Court approved the parties’ stipulation providing for the withdrawal of the motion for judgment on the pleadings and the dismissal of the action as moot upon the filing and adjudication of plaintiff’s motion for an award of attorney’s fees and costs. On July 29, 2013, plaintiff filed a motion for an award of attorneys’ fees and costs. On September 20, 2013, the Company filed its opposition to plaintiff’s motion. On October 11, 2013, plaintiff filed her reply in further support of her motion. The motion is now fully submitted. No hearing date has been set for this motion.

We are also currently a party to a putative securities class action in the United States District Court for the Eastern District of Texas, entitled Local 731 I.B. of T. Excavators and Pavers Pension Trust Fund v. Diodes, Inc., Civil Action No. 6:13-cv-00247 (E.D. Tex. filed Mar. 15, 2013), against the Company, Dr. Lu and Richard D. White. In this action, plaintiff purportedly on behalf of a class of investors who purchased the Company’s Common Stock between February 9, 2011 and June 9, 2011, alleges that defendants violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Securities and Exchange Commission Rule 10b-5 promulgated thereunder by making allegedly misleading public statements during the class period regarding the labor market in China and its impact on the Company’s business and prospects. On June 14, 2013, the Court entered an order appointing Local 731 I.B. of T. Excavators and Pavers Pension Trust Fund as lead plaintiff and approved lead plaintiff’s selection of Robbins Geller Rudman & Dowd as lead plaintiff’s counsel and the Ward & Smith Law Firm as lead plaintiff’s liaison counsel. On August 1, 2013, lead plaintiff filed an amended complaint reiterating the same claims for relief against the same defendants as asserted in the original complaint. On September 16, 2013, defendants filed a motion to dismiss the amended complaint. Lead plaintiff filed its opposition to defendants’ motion to dismiss on October 31, 2013. Defendants filed their reply in further support of their motion to dismiss on December 3, 2013. Lead plaintiff filed its sur-reply in further opposition of defendant’s motion to dismiss on December 13, 2013. The motion is now fully submitted. No hearing date has been set for this motion. Pursuant to the Private Securities Litigation Reform Act of 1995, all discovery and other proceedings are stayed pending a ruling on any motion to dismiss. The defendants intend to defend this action vigorously.

On February 20, 2014, a purported “tag-along” stockholder derivative action was filed in the United States District Court for the Eastern District of Texas, entitled Persson v. Keh-Shew Lu, Case No. 4:14-cv-00108-RC-ALM (E.D. Tex. filed Feb. 20, 2014), on behalf of the Company against its directors, in which plaintiff alleges that the Board breached their fiduciary duties by allowing the Company to make allegedly misleading public

- 33 -

Table of Contents

statements in 2011 regarding the labor market in China and its impact on the Company’s business and prospects, by failing to maintain internal controls and by selling shares of Diodes stock while allegedly in possession of material nonpublic information regarding the labor market in China and its impact on the Company’s business and prospects. The complaint has not yet been served. The complaint does not seek any damages or other relief against the Company. The defendants intend to defend this lawsuit vigorously.

While we intend to defend any lawsuit vigorously, we presently believe that the ultimate outcome of current pending legal proceeding will not have any material adverse effect on our financial position, cash flows or overall results of operations. Litigation is subject to inherent uncertainties, and unfavorable rulings could occur. An unfavorable ruling could include monetary damages. Were an unfavorable ruling to occur, there exists the possibility of a material adverse impact on our business or results of operations for the period in which the ruling occurs or future periods.

From time to time, the Company is involved in various routine legal proceedings incidental to the conduct of its business. The Company’s management does not believe that any of these legal proceedings will have a material adverse impact on the business, financial condition or results of operations of the Company.

Not Applicable.

- 34 -

Table of Contents

PART II

Market Information

Our Common Stock is traded on the Nasdaq Global Select Market (“NasdaqGS”) under the symbol “DIOD.” In July 2000, November 2003, December 2005 and July 2007, we effected 50% stock dividends in the form of three-for-two stock splits. The following table shows the range of high and low closing sales prices per share for our Common Stock for each fiscal quarter from January 1, 2012 as reported by NasdaqGS.

Holders and Recent Stock Price

On February 21, 2014, the closing sales price of our Common Stock as reported by NasdaqGS was $23.44, and there were approximately 360 holders of record of our Common Stock.

Dividends

We have never declared or paid cash dividends on our Common Stock, and currently do not intend to pay dividends in the foreseeable future as we intend to retain any earnings for use in our business. Our credit agreement with Bank of America N.A. and other lender parties permits us to pay dividends up to $1.5 million per fiscal year to our stockholders so long as we have not defaulted and are in continuing operation at the time of such dividend. The payment of dividends is within the discretion of our Board of Directors, and will depend upon, among other things, our earnings, financial condition, capital requirements, and general business conditions. We have never repurchased shares of our Common Stock.

Securities Authorized for Issuance Under Equity Compensation Plans

The information regarding the Company’s equity compensation plans required to be disclosed by Item 201(d) of Regulation S-K is incorporated by reference from the Company’s 2014 definitive proxy statement into Item 12 of Part III of this Annual report.

Performance Graph

Set forth below is a line graph comparing the yearly percentage change in the cumulative total stockholder return of our Common Stock against the cumulative total return of the Nasdaq Composite and the Nasdaq Industrial Index for the five calendar years ending December 31, 2013. The graph is not necessarily indicative of future price performance.

- 35 -

Table of Contents

The graph shall not be deemed incorporated by reference by any general statement incorporating by reference this Annual Report into any filing under the Securities Act of 1933 or under the Securities Exchange Act of 1934, except to the extent that the Company specifically incorporates this information by reference, and shall not otherwise be deemed filed under such Acts.

Source: Data provided by Zacks Investment Research, Inc., copyright 2014. Used with permission. All rights reserved.

The graph assumes $100 invested on December 31, 2008 in our Common Stock, the stock of the companies in the Nasdaq Composite Index and the stock of companies in the Nasdaq Industrial Index, and that all dividends received within a quarter, if any, were reinvested in that quarter.

Issuer Purchases of Equity Securities

There have been no repurchases of our Common Stock during the fourth quarter of 2013.

- 36 -

Table of Contents

The following selected consolidated financial data for the fiscal years ended December 31, 2013 through 2009 is qualified in its entirety by, and should be read in conjunction with, the other information and consolidated financial statements, including the notes thereto, appearing elsewhere herein. Certain amounts as presented in the accompanying consolidated financial statements have been reclassified to conform to 2013 financial statement presentation.

- 37 -

Table of Contents

The following section discusses management’s view of the financial condition, results of operations and cash flows of Diodes Incorporated and its subsidiaries (collectively, “the Company,” “our Company,” “we,” “our,” “ours,” or “us”) and should be read together with the consolidated financial statements and the notes to consolidated financial statements included elsewhere in this Form 10-K.

The following discussion contains forward-looking statements and information relating to our Company. We generally identify forward-looking statements by the use of terminology such as “may,” “will,” “could,” “should,” “potential,” “continue,” “expect,” “intend,” “plan,” “estimate,” “anticipate,” “believe,” “project,” or similar phrases or the negatives of such terms. We base these statements on our beliefs as well as assumptions we made using information currently available to us. Such statements are subject to risks, uncertainties and assumptions, including those identified in Part I, Item 1A.“Risk Factors,” as well as other matters not yet known to us or not currently considered material by us. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those anticipated, estimated or projected. Given these risks and uncertainties, prospective investors are cautioned not to place undue reliance on such forward-looking statements. Forward-looking statements do not guarantee future performance and should not be considered as statements of fact.

You should not unduly rely on these forward-looking statements, which speak only as of the date of this Annual Report on Form 10-K. Unless required by law, we undertake no obligation to publicly update or revise any forward-looking statements to reflect new information or future events or otherwise. The Private Securities Litigation Reform Act of 1995 (the “Act”) provides certain “safe harbor” provisions for forward-looking statements. All forward-looking statements made in this Annual Report on Form 10-K are made pursuant to the Act.

Summary of the Year Ended December 31, 2013

Overview of 2013

For the first quarter of 2013, we achieved record quarterly revenue despite the typical seasonal softness in the quarter and the slowdown at certain key original equipment manufacturer (“OEM”) customers. Our sequential revenue growth was due to our continued design win momentum, as well as one month of revenue contribution from our acquisition of BCD. In addition, gross profit margin improved sequentially due to revenue increases in the higher margin regions of North America and Europe, but the improvements were offset by acquisition accounting adjustments in connection with the acquisition of BCD. Margins also benefited from a better than expected manufacturing recovery following the Chinese New Year holiday, lower gold prices and a more favorable product mix. Also during the quarter, we finalized our acquisition of BCD and this transaction, excluding acquisition accounting adjustments, was immediately accretive to earnings. The industrial and

- 38 -

Table of Contents

communication end-markets improved in both North America and Europe, while computing was slightly better than expected with some expansion in WiFi modules. Although the consumer end-market was softer, we continued to execute our strategy and capitalize on our strong position in smartphones and tablets with new products and design wins in both devices and chargers.

For the second quarter of 2013, our past design win momentum and new product initiatives, combined with our first full quarter of revenue contribution from BCD, contributed to the achievement of record quarterly revenue and increased market share despite the slowdown at certain major OEM customers and continued weakness in the PC market. During the quarter we were also able to improve our gross margin, which included the BCD inventory valuation adjustment, due to improved product mix, lower gold prices, copper wire conversion, as well as our cost reduction efforts. Furthermore, the integration of BCD progressed as we moved ahead of schedule in transferring BCD products into our Shanghai packaging facilities. As a result of these collective factors, we reported solid earnings growth and generated strong cash flow for the quarter. North America and Europe combined revenue was up slightly after a very strong first quarter. We continued to increase share as well as new design win revenue at Asia smartphone manufacturers, while LED TV also showed strength. The growth in both of these markets offset the continued softness in PCs. Generally speaking, the industrial and automotive end-markets remained relatively consistent in both North America and Europe.

For the third quarter of 2013, we achieved record quarterly revenue, increased market share gains and solid operational performance across our business. Our past design win momentum and strength in the TV market and at certain major OEM customers were able to offset the continued weakness in the PC market. We also further improved our gross margin through our cost reduction efforts and improved BCD wafer fabrication facility loadings. Additionally, we reduced our operating expenses on a dollar basis and as a percentage of revenue, demonstrating further progress towards achieving our target model of 20% of revenue. These achievements are even more notable when considering the weakness of the U.S. dollar relative to most of the currencies where we have operations, in particular the British Pound and the Euro. Our improved operational efficiencies and cost reductions were able to mostly offset this currency impact and allowed us to exceed our operational expectations for the quarter. Our record third quarter revenue was driven by growth in all regions with strong increases in North America and Europe after a relatively flat second quarter in these regions. We also achieved record sales in the China local market. In the communications end-market, our solid position with smartphone manufacturers continued to be a key driver of sales as a result of our growing new design win revenue. Computing grew slightly in the quarter, primarily due to increased sales for our products used in tablets, partially offset by weakness in notebooks and motherboards. The automobile and industrial end-markets were also up in the quarter on the strength in both North America and Europe.

During the fourth quarter of 2013, revenue reflected greater than normal seasonality due to weakness in the PC market as well as cautious inventory management at distributors. In addition, revenue in the quarter was down sequentially primarily due to a global reduction in distributor point of purchase, which was down for North America and Europe was impacted to an even greater extent. Distributors in all regions focused on inventory management as inventory declined sequentially. OEM sales were down and distributor point of sale was up. Global channel inventory remained in line and under three months. Despite the prolonged weakness in the PC market, we have been able to gain market share across our business due to past design win momentum and new product initiatives. Also during the quarter, we improved our balance sheet by reducing our long-term debt and inventory and generated positive cash flows from operations. All end-markets were down with industrial being down the greatest percentage due to declines in North America and Europe followed by computing. The consumer and communications end-markets were the strongest performers in the fourth quarter compared to the third quarter.

Business Acquisitions

On March 5, 2013, we completed the acquisition of BCD for an aggregate consideration of approximately $155 million, excluding acquisition costs, fees and expenses. In addition, a $5 million retention plan for employees of BCD, payable at the 12, 18 and 24 month anniversaries of the acquisition, has been established.

- 39 -

Table of Contents

The acquisition was funded by drawings on our bank credit facilities. The results of operations of BCD have been included in the consolidated financial statements from March 1, 2013. The purpose of this acquisition is to further our strategy of expanding our market and growth opportunities through select strategic acquisitions. This acquisition enhanced our analog product portfolio by expanding our standard linear and power management offerings, including AC/DC and DC/DC solutions for power adapters and chargers, as well as other electronic products. BCD’s established presence in Asia, with a particularly strong local market position in China, offers us even greater penetration of the consumer, computing and communications end-markets. Likewise, we believe we can achieve increased market penetration for BCD’s products by leveraging our global customer base and sales channels. In addition, BCD has in-house manufacturing capabilities in China, as well as a cost-effective development team, that can be deployed across multiple product families. We also believe we will be able to apply our packaging capabilities and expertise to BCD’s products in order to improve cost efficiencies, utilization and product mix. See Note 17 of the “Notes to Consolidated Financial Statements” of this Annual Report for additional information regarding the acquisition of BCD.

Business Outlook

Looking forward, we remain focused on achieving our goal of $1 billion in annual revenue with model profitability. The BCD acquisition has brought us one step closer toward achieving that goal. We have a solid pipeline of designs and expanded customer relationships across all regions and product lines. The success of our business depends, among other factors, on the strength of the global economy and the stability of the financial markets, our customers’ demand for our products, the ability of our customers to meet their payment obligations, the likelihood of customers canceling or deferring existing orders and end-user consumers’ demand for items containing our products in the end-markets we serve. We believe the long-term outlook for our business remains generally favorable despite the recent volatility in the global economy and the equity and credit markets as we continue to execute on the strategy that has proven successful for us over the years. See “Risk Factors – The success of our business depends on the strength of the global economy and the stability of the financial markets, and any weaknesses in these areas may have a material adverse effect on our revenues, results of operations and financial condition.” in Part I, Item 1A of this Annual Report for additional information.

Factors Relevant to Our Results of Operations

In 2013, the following factors affected, and, we believe, will continue to affect, our results of operations:

- 40 -

Table of Contents

Description of Sales and Expenses

Net sales

The principal factors that have affected or could affect our net sales from period to period are:

Cost of goods sold

Cost of goods sold includes manufacturing costs for our semiconductors and our wafers. These costs include raw materials used in our manufacturing processes as well as labor costs and overhead expenses. Cost of goods sold is also impacted by yield improvements, capacity utilization and manufacturing efficiencies. In addition, cost of goods sold includes the cost of products that we purchase from other manufacturers and sell to our customers. Cost of goods sold is also affected by inventory obsolescence if our inventory management is not efficient.

- 41 -

Table of Contents

Selling, general and administrative expenses

Selling, general and administrative expenses relate primarily to compensation and associated expenses for personnel in general management, sales and marketing, information technology, engineering, human resources, procurement, planning and finance, and sales commissions, as well as outside legal, accounting and consulting expenses, and other operating expenses.

Research and development expenses

Research and development expenses consist of compensation and associated costs of employees engaged in research and development projects, as well as materials and equipment used for these projects. Research and development expenses are primarily associated with our wafer facilities in China, Kansas City, Missouri and Manchester, United Kingdom (“U.K.”) and our manufacturing facilities in China, as well as with our engineers in the U.S. and Taiwan. All research and development expenses are expensed as incurred.

Amortization of acquisition-related intangible assets

Amortization of acquisition-related intangible assets consists of amortization of acquisition-related intangible assets, such as developed technologies and customer relationships.

Impairment of goodwill

Impairment of goodwill consists of the impairment amount recognized as a result of a reporting unit’s goodwill exceeding its implied fair value.

Restructuring

Restructuring consists of charges to reduce our cost structure to enhance operating effectiveness and improve profitability.

Gain on sale of assets

Gain on sale of assets consists of the sale of certain assets such as intangibles or buildings.

Interest income / expense

Interest income consists of interest earned on our cash and investment balances. Interest expense consists of interest payable on our outstanding credit facilities and other debt instruments.

Gain (loss) on securities carried at fair value

From time to time we may hold investments in the form of common stock or some other similar equivalent and have elected fair value accounting treatment.

Income tax provision

Our global presence requires us to pay income taxes in a number of jurisdictions. See Note11 of “Notes to Consolidated Financial Statements” for additional information.

Net income attributable to noncontrolling interest

Noncontrolling interest represents the minority investors’ share of earnings of our subsidiaries.

Net income attributable to common stockholders

Net income attributable to common stockholders is net income less net income attributable to noncontrolling interest.

- 42 -

Table of Contents

Results of Operations

The following table sets forth, for the periods indicated, the percentage that certain items in the statement of income bear to net sales and the percentage dollar increase (decrease) of such items from period to period.

The following discussion explains in greater detail our consolidated operating results and financial condition. This discussion should be read in conjunction with the consolidated financial statements and notes thereto appearing elsewhere in this Annual Report (in thousands).

Net sales for 2013 increased $193 million to $827 million from $634 million for 2012. The 31% increase in net sales represented an approximately 25% increase in units sold and a 5% increase in ASP. The net sales increase for 2013 was primarily attributable to our past design win momentum and new product initiatives, combined with the inclusion of ten months of BCD net sales.

Cost of goods sold increased $117 million, or 25%, for 2013 to $589 million, compared to $472 million for 2012. As a percent of sales, cost of goods sold decreased from 75% for 2012 to 71% for 2013. Our average unit cost (“AUP”) was relatively flat.

Gross profit for 2013 increased 47% to $238 million from $162 million for 2012. Gross profit as a percentage of net sales was 29% for 2013, compared to 25% for 2012. The increase in gross margin was primarily due to lower gold prices, improved product mix, stable pricing, copper wire conversion and cost reduction efforts.

- 43 -

Table of Contents

SG&A for 2013 increased $31 million, or 30%, to $132 million, compared to $101 million for 2012. SG&A, as a percentage of net sales, was 16% in 2013 and 2012. The dollar amount increase in SG&A included increases in wages, including BCD retention costs, freight and professional fees, which was primarily due to the acquisition of BCD.

R&D for 2013 increased to $48 million, or 6% of net sales, compared to $34 million, or 5% of net sales, for 2012. The increase in R&D included increases in wages, including BCD retention costs, which was primarily due to the acquisition of BCD.

Amortization of acquisition-related intangibles was $8 million for 2013, compared to $5 million for 2012. The $3 million increase was primarily due to the amortization expense on the acquired intangibles as part of the acquisition of BCD.

Impairment of goodwill was $5 million for 2013. The carrying amount of a reporting unit’s (Eris Technology Corporation) goodwill exceeded its implied fair value, and therefore an impairment loss was recognized.

Restructuring was $2 million for 2013. In the second quarter of 2013, we initiated restructuring plans primarily relating to our U.K. development team and the closure of our New York sales office. The amounts recorded primarily relate to termination and severance costs. All restructuring was completed in the third quarter of 2013.

Gain on sale of assets was $4 million for 2012, which was mainly from the sale of an intangible asset located in Europe and a sale of a building located in Taiwan.

Interest income for 2013 and 2012 was $1 million, which was mainly from interest earned on bank accounts.

Interest expense for 2013 was $6 million, compared to $1 million for 2012. The $5 million increase is primarily due to the amounts borrowed under the $300 million revolving senior credit facility in connection with acquiring BCD.

- 44 -

Table of Contents

Gain on securities carried at fair value for 2013 was $1 million compared to $7 million for 2012. For 2013, the gain was from unrealized and realized gains in trading securities. For 2012, the gain was from a $4 million unrealized gain on the shares of common stock of BCD held as an investment and a $3 million realized gain on the shares of common stock of Eris prior to obtaining a controlling interest.

Other income for 2013 was negligible, compared to other expense of $1 million for 2012. Included in other income for 2013 were foreign currency gains and miscellaneous income. Included in other expense for 2012 were foreign currency losses, partially offset by miscellaneous income.

We recognized income tax expense of $15 million for 2013, resulting in an effective tax rate of 38%, as compared to 16% for 2012. Income tax expense for 2013 was impacted by $5 million additional tax expense in regard to a tax audit by the China tax authorities. In addition, the mix of pretax earnings among foreign and domestic subsidiaries changed from 2012 to 2013, resulting in an increased effective tax rate.

Net (income) loss attributable to noncontrolling interest primarily represents the minority investors’ share of the earnings of certain China subsidiaries and Eris. During 2012, the Company acquired approximately 51% of the outstanding common stock of Eris, and the income or loss attributable to the 49% noncontrolling interest is included in this account. The joint venture investments were eliminated in the consolidations of our financial statements, and the activities of our subsidiaries were included therein. The noncontrolling interest in the subsidiaries and their equity balances are reported separately in the consolidation of our financial statements. The loss attributable to noncontrolling interest for 2013 was impacted by the impairment of goodwill of approximately $5 million (attributable to Eris), of which 49% was recognized in noncontrolling interest.

Net income attributable to common stockholders increased 10% to $27 million (or $0.57 basic earnings per share and $0.56 diluted earnings per share) for 2013, compared to $24 million (or $0.53 basic earnings per share and $0.51 diluted earnings per share) for 2012. Net income attributable to common stockholders for 2013 was impacted by impairment of goodwill, acquisition accounting expenses related to acquisition of BCD and increased interest expense due to borrowings under our $300 million revolving senior credit facility.

Net sales for 2012 decreased $1 million to $634 million from $635 million for 2011. The small decrease in net sales represented an approximately 10% increase in units sold, which was offset by a 10% decrease in ASP. ASP was impacted by pricing pressure and product mix.

- 45 -

Table of Contents

Cost of goods sold increased $31 million, or 7%, for 2012 to $472 million, compared to $442 million for 2011. As a percent of sales, cost of goods sold increased from 70% for 2011 to 75% for 2012. Our average unit cost (“AUP”) decreased approximately 3%. Although AUP decreased, it was not enough to offset the reduction in ASP.

Gross profit for 2012 decreased 17% to $162 million from $194 million for 2011. Gross profit as a percentage of net sales was 25% for 2012, compared to 30% for 2011. The decrease in gross margin was primarily due to a weaker pricing environment and product mix coupled with increased manufacturing costs due mainly to raw material cost increases, particularly gold, and lower equipment utilization.

SG&A for 2012 increased $11 million, or 13%, to $101 million, compared to $90 million for 2011. SG&A, as a percentage of net sales, was 16% in 2012, compared to 14% in 2011. The increase in SG&A was primarily due to increases in wages and benefits, freight and professional fees.

R&D for 2012 increased to $34 million, or 5% of net sales, compared to $27 million, or 4% of net sales, for 2011. The increase in R&D was due to increase in engineering supplies, material purchases, development services and wages and benefits.

Amortization of acquisition-related intangibles was approximately $5 million for 2012 and 2011.

Gain on sale of assets was approximately $4 million for 2012, which was mainly from the sale of an intangible asset located in Europe and a sale of a building located in Taiwan.

Interest income for 2012 and 2011 was $1 million, which was mainly from interest earned on bank accounts.

Interest expense for 2012 was $1 million, compared to $3 million for 2011. The $2 million decrease is due primarily to the reduced interest paid on our convertible senior notes, which were repurchased in 2011.

Amortization of debt discount for 2012 was $0 as the amortization period on our convertible senior notes ended as of September 30, 2011.

- 46 -

Table of Contents

Gain on securities carried at fair value for 2012 was $7 million compared to loss on securities carried at fair value of $1 million for 2011. For 2012, the gain was from a $4 million gain on the shares of common stock of BCD held as an investment and a $3 million gain on the shares of common stock of Eris prior to obtaining a controlling interest. For 2011, the loss was from the shares of common stock of Eris that would have otherwise been accounted for under the equity method of accounting.

Other expense for 2012 was $1 million, compared to other income of $1 million for 2011. Included in other expense for 2012 were foreign currency losses, partially offset by miscellaneous income. Included in other income for 2011 were foreign currency gains and miscellaneous income.