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Part IV

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 10-K

(Mark One)  

ý

 

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

For the fiscal year ended December 28, 201331, 2016

or

o

 

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

For the transition period from            to          

Commission file number: 000-29823

SILICON LABORATORIES INC.
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction of
incorporation or organization)
 74-2793174
(I.R.S. Employer
Identification No.)

400 West Cesar Chavez, Austin, Texas
(Address of principal executive offices)

 

78701
(Zip Code)

(512) 416-8500
(Registrant's telephone number, including area code)

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

Title of each class Name of exchange on which registered
Common Stock, $0.0001 par value The NASDAQ Stock Market LLC

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. ý Yes    o 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. o Yes    ý No

         Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Sections 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. ý Yes    o No

         Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, 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). ý Yes    o 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 the registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. oý

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

Large accelerated filer ý Accelerated filer o Non-accelerated filer o Smaller reporting company o

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

         The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold as of the last business day of the registrant's most recently completed second fiscal quarter (June 28, 2013)(July 1, 2016) was $1,639,157,249$1,951,606,092 (assuming, for this purpose, that only directors and officers are deemed affiliates).

         There were 42,826,58341,890,791 shares of the registrant's common stock issued and outstanding as of January 21, 2014.23, 2017.

DOCUMENTS INCORPORATED BY REFERENCE

         Portions of the Proxy Statement for the registrant's 20132016 Annual Meeting of Stockholders are incorporated by reference into Part III of this Form 10-K.

   


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 Page
Number
 

Part I

   

 

    

 Item 1. 

Business

  2 

 Item 1A. 

Risk Factors

  1213 

 Item 1B. 

Unresolved Staff Comments

  27 

 Item 2. 

Properties

  2728 

 Item 3. 

Legal Proceedings

  2728 

 Item 4. 

Mine Safety Disclosures

  2729 

Part II

   

 

    

 Item 5. 

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

  2830 

 Item 6. 

Selected Financial Data

  3032 

 Item 7. 

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

  3133 

 Item 7A. 

Quantitative and Qualitative Disclosures about Market Risk

  4447 

 Item 8. 

Financial Statements and Supplementary Data

  4548 

 Item 9. 

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

  4548 

 Item 9A. 

Controls and Procedures

  4548 

 Item 9B. 

Other Information

  4549 

Part III

   

 

    

 Item 10. 

Directors, Executive Officers and Corporate Governance

  4650 

 Item 11. 

Executive Compensation

  4950 

 Item 12. 

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

  4950 

 Item 13. 

Certain Relationships and Related Transactions, and Director Independence

  4950 

 Item 14. 

Principal Accounting Fees and Services

  4950 

Part IV

   

 

    

 Item 15. 

Exhibits and Financial Statement Schedules

  5051 


Cautionary Statement

        Except for the historical financial information contained herein, the matters discussed in this report on Form 10-K (as well as documents incorporated herein by reference) may be considered "forward-looking" statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Such forward-looking statements include declarations regarding the intent, belief or current expectations of Silicon Laboratories Inc. and its management and may be signified by the words "believe," "estimate," "expect," "intend," "anticipate," "plan," "project," "will" or similar language. You are cautioned that any such forward-looking statements are not guarantees of future performance and involve a number of risks and uncertainties. Actual results could differ materially from those indicated by such forward-looking statements. Factors that could cause or contribute to such differences include those discussed under "Risk Factors" and elsewhere in this report. Silicon Laboratories disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.


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Part I

Item 1.    Business

General

        Silicon Laboratories Inc. designsis a provider of silicon, software and develops proprietary, analog-intensive,solutions for the Internet of Things (IoT), Internet infrastructure, industrial, consumer and automotive markets. We solve some of the electronics industry's toughest problems, providing customers with significant advantages in performance, energy savings, connectivity and design simplicity. Backed by our world-class engineering teams with strong software and mixed-signal design expertise, Silicon Laboratories empowers developers with the tools and technologies they need to advance quickly and easily from initial idea to final product.

        Mixed-signal integrated circuits (ICs) for a broad range of applications. Mixed-signal ICs are electronic components that convert real-world analog signals, such as sound and radio waves, into digital signals that electronic products can process. Therefore, mixed-signal ICs are critical components in products addressing a variety of markets, including industrial, communications, consumer industrial and automotive.

Our world-class, mixed-signal ICs leverage standard complementary metal oxide semiconductor (CMOS), a low cost, widely available process technology. This enables smaller, more cost effective and energy efficient solutions. Our expertise in analog-intensive, mixed-signal IC design in CMOS allows us to develop new and innovative products that are highly integrated, simplifying our customers' designs and improving their time-to-market.

Industry Background

        The pervasiveness of connectivity and the explosion in mobile computing is driving semiconductor consumption. Intelligence is being added to electronic systems to enable remote monitoring, power efficiency and an improved user experience. This in turn is increasing the demand for bandwidth, requiring more infrastructure to support higher performance networks. The nearly ubiquitous availability of Internet access and the increasing intelligence of electronic devices and mobility are enabling what is called the Internet of Things, (IoT), a term that describes the exponential increase in IP-enabled devices connected to the Internet.

        These trends are requiringrequire more and more interaction between the analog world we live in and the digital world of computing, and therefore require analog-intensive, mixed-signal circuits. Traditional mixed-signal designs relied upon solutions built with numerous, complex discrete analog and digital components. While these traditional designs provide the required functionality, they are often inefficient and inadequate for use in markets where size, cost, power consumption and performance are increasingly important product differentiators. In order to improve their competitive position, electronics manufacturers need to reduce the cost and complexity of their systems and enable new features or functionality to differentiate themselves from their competitors.

        Simultaneously, these manufacturers face accelerating time-to-market demands and must be able to rapidly adapt to evolving industry standards and new technologies. Because analog-intensive, mixed-signal IC design expertise is difficult to find, these manufacturers increasingly are turning to third parties, like us, to provide advanced mixed-signal solutions. Mixed-signal design requires specific expertise and relies on creative, experienced engineers to deliver solutions that optimize speed, power and performance, despite the noisy digital environment, and within the constraints of standard manufacturing processes. The development of this design expertise typically requires years of practical analog design experience under the guidance of a senior engineer, and engineers with the required level of skill and expertise are in short supply.

        Many IC solution providers lack sufficient analog expertise to develop compelling mixed-signal ICs.products. As a result, manufacturers of electronic devices value IC providers that can supply them with


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mixed-signal solutions with greater functionality, smaller size and lower power requirements at a reduced cost and shorter time-to-market.


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Products

        We provide analog-intensive, mixed-signal solutions for use in a variety of electronic products in a broad range of applications for the IoT market including portable devices, AM/FM radiosconnected home, smart lighting, security, wearables and other consumer electronics,smart energy applications. We are a supplier of wireless connectivity solutions for the IoT based on Bluetooth®, zigbee®, Thread, Wi-Fi® and sub-GHz technologies.

        We provide a wide range of timing and isolation products for infrastructure applications including high-performance clocks and oscillators for networking equipment, testdata centers and measurementwireless base stations, as well as digital isolators and current sensors for industrial power supplies, motor control, solar inverters and hybrid-electric vehicles. We also provide broadcast products, such as TV tuners and demodulators and automotive radio tuners, and access products including subscriber line interface circuits for voice over IP (VoIP), embedded modems, and Power over Ethernet (PoE) power source equipment industrial monitoring and control, home automation and customer premises equipment.powered device ICs.

        Our products integrate complex mixed-signal functions that are frequently performed by numerous discrete components in competing products into a single chip or chipset. By doing so, we are able to create products that, when compared to many competing products:

        We group our products into the following categories:


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        The following table summarizes the diverse product areas and applications for the various ICsproducts that we have introduced to customers:

Product Areas and Description
 Applications

Broad-basedInternet of Things Products

  

Microcontrollers and Wireless Products

 

 

We offer a family of products ideal for embedded systems that include energy friendly 8-bit mixed-signal microcontrollers, 32-bit wireless MCUs and ultra low-power 32-bit MCUs based on scalable ARM® Cortex-M0/Cortex-M0+/M3/M4 cores, as well as peripheralwireless connectivity devices such as our EZRadio® family of fully integrated, low power transceivers. Our wireless modules provide flexible, highly integrated products that meet demanding requirements and can be used in a number of applications. Our wireless connectivity solutions for the IoT are based on Bluetooth, zigbee, Thread, Wi-Fi and sub-GHz technologies. Our EFM32™, EFM8™, 8051, wireless MCUs and wireless SoCs are supported by Simplicity Studio™, a one-click access to design tools, documentation, software and support resources. These products generally integrate intelligent data capture, high performance processing, and communication interfaces in a single system on a chip. We also offer a real-time operating system (RTOS) to help simplify software development for IoT applications by coordinating and prioritizing multiprotocol connectivity, SoC peripherals and other system-level activities. This family of products addresses a variety of end-markets, including the IoT (connected home, smart lighting, security, wearables and smart energy applications), automotive, communications, consumer, industrial, medical and power management markets.

 

Connected devices for the IoT

Home automation

Security systems

Smart energylighting

Automotive sensorsSmart metering

Wearables

Industrial automation and controlscontrol

Consumer electronics

Medical instrumentation

Automotive sensors and controls

Electronic test and measurement equipment

Industrial automation and control

Consumer electronics

Wearables

Computer peripherals

White goods

Smart meteringRemote controls

Sensors

Our sensor products include optical sensors (proximity, ambient light gestures and heart rate), as well as relative humidity (RH) / temperature sensors. These devices leverage our mixed-signal capability to provide high accuracy, process technology to improve performance and lower power consumption than competing parts.

Consumer health & fitness (wearables)

RemoteSmart home sensing

Industrial controls

Toys and consumer electronics

Monitors and lavatory controls

Consumer medical

  

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Product Areas and Description
 Applications
Timing DevicesBroadcast Products

Broadcast Consumer

  

Our Timing devices leverage our DSPLL® and MultiSynth technologies to offer frequency agile, extremely low jitter clock and oscillator products. Our patented CMEMS® technology integrates microelectromechanical system (MEMS) resonators with CMOS timing circuits to eliminate the need for discrete quartz resonators that have traditionally been required in solutions like crystal based oscillator devices. Our CMEMS based oscillators are in the early stages of adoption and compete against bulky, expensive and less reliable quartz solutions. We also offer a full line of low jitter clock buffers that are often used with our clock and oscillator offerings to a build a timing subsystem.

Networking equipment

Telecommunications

Wireless base stations and backhaul

Test and measurement equipment

Broadcast video systems

HDTV cameras

High-speed data acquisition

Optical networking

Servers and storage systems

Power and Isolation Products

Our isolation techniques enable customers to meet safety standards for isolation and solve noise issues. Products include multi-channel isolators and isolated drivers that simplify design, minimize noise emissions, and reduce system cost.

Motor control

Industrial networking

Switch mode power supplies

Isolated analog data acquisition

Isolated DC-DC supplies

Electronic ballasts for lighting

Solar power inverters

Sensors

Our sensor products include optical, proximity sensors, ambient light sensors and relative humidity (RH) / temperature sensors. These devices leverage our mixed-signal capability to provide high accuracy, quicker response time and lower power consumption than competing parts.

Smart home applications

Industrial controls

Toys and consumer electronics

Consumer health & fitness

Monitors and lavatory controls

Broadcast Products

Broadcast Radio Receivers and Transmitters

Our AM and FM receivers deliver the entire tuner from antenna input to audio output in a single chip. The broadcast audio products are based on an innovative digital architecture that enables significant improvements in performance, which translates to a better consumer experience, while reducing system cost and board space for our customers.

Automotive infotainment systems

Stand-alone AM/FM radios

Portable audio devices

MP3/digital media players

Navigation/GPS devices

Satellite radios

Home stereos


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Product Areas and Description
Applications
Video Tuners and Demodulators

Our complete, globally-compliantworldwide hybrid TV tuners with analog TV demodulator in a single CMOS IC leverage our proven digital low-IF architecture and exceed the performance of traditional discrete TV tuners, enabling TV makers to deliver improved picture quality and better reception for both analog and digital broadcasts. Our small, low power and high performance single and dual digital video demodulators support DVB-T/T2, DVB-S/S2,S2/S2X, DVB-C/C2, and/or DVB-C/C2ISDB-T in a single chip and are ideal for equipment receiving digital terrestrial, satellite and/or cable services. Our AM/FM, HD Radio™ and DAB/DAB+ receivers deliver a complete radio solution from antenna input to audio output in a single chip. The broadcast audio products are based on an innovative digital architecture that enables significant improvements in performance, which translates to a better consumer experience, while reducing system cost and board space for our customers.

 

Integrated digital televisions (iDTV)

Free-to-Air (FtA) or pay-TV set-top box receiversboxes

PVR/DVD/Blu-Ray/HDD video recorders

PC-TV applications

DVD/HDD personal video recordersAM/FM clock radios

Portable audio devices

MP3/digital media players

Home theater systems

DAB digital radios

HD Radio digital radios

Broadcast Automotive

Our high-performance solutions for car sound systems include high fidelity radio ICs that improve the end user experience, reduce system cost and offer the latest digital radio technologies like DAB/DAB+ and HD Radio. Our scalable architecture enables infotainment system suppliers to leverage their investments across multiple product lines ranging from entry-level car radios to cutting-edge multi-tuner, multi-antenna radios for premium vehicles.

Automotive infotainment systems/radios

Navigation/GPS devices

AccessInfrastructure Products

 

 

Timing Devices

Robust demand for bandwidth is driving the deployment of next-generation Internet infrastructure equipment to deliver higher speed, higher capacity and more flexible networks. This transition puts unique requirements on the clocks and oscillators used to provide timing and synchronization for the equipment responsible for switching, transporting, processing and storing network traffic. To meet this need, we provide low jitter, frequency flexible, mass customizable timing solutions that accelerate development time, minimize cost and improve system reliability. Our high-performance "clock-tree-on-a-chip" products offer highly integrated single-chip IC solutions for clock synthesis and jitter attenuation, offering superior jitter performance and frequency flexibility for high data rate applications.

Optical networking

Networking equipment

Telecommunications

Broadcast video

Servers and storage

Wireless backhaul

Wireless base stations

Small cells

Test and measurement equipment

Image processing

High-speed data acquisition

Isolation Products

Our isolation techniques enable customers to meet safety standards for isolation and solve difficult electronic noise issues. Products include multi-channel isolators, isolated drivers, isolated power converters and mixed-signal devices that simplify design, improve reliability, minimize noise emissions, and reduce system cost.

Switch mode power supplies

Industrial networking

Hybrid / Electric automotive drive trains

Solar inverters

Motor control

Isolated analog data acquisition


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Product Areas and Description
Applications
Access Products

ProSLIC® Subscriber Line Interface Circuits for VoIP

 

Our ProSLIC provides the analog subscriber line interface on the source end of the telephone which generates dial tone, busy tone, caller ID and ring signal. Our offerings include short-haul applications suitableare well suited for the customer premises as well as long-haulmarket for Voice over IP telephony applications suitable for the traditional telephone company central office.deployed over cable, DSL, optical and wireless fixed terminal networks.

 

Voice over broadbandfunctionality for cable, DSL and optical digital modems and terminal adapters

VoIP residential gateways

Wireless local loop remote access systems

PBXs

Wired long loop and central office systems

ISOmodem® Embedded Modems

 

 

TheOur ISOmodem embedded modems leverage innovative silicon direct access arrangement (DAA) technology and a digital signal processor to deliver a globally compliant, very smallcompact analog modem for embedded applications.

 

Point of sale (POS) terminals

Fax machines and multi-function printers

Industrial monitoringSecurity systems

Postage meters

Security systems Industrial monitoring

Remote medical monitoring

Point of sale (POS) terminals

Set-top and digital cable boxes

Power over Ethernet

 

 

Our Power over Ethernet power source equipment and powered device ICs offer highly differentiated solutions with a reduced total bill of materials (BOM) and improved performance and reliability. Our solutions also offer a higher level of integration not available with competing solutions.

 

Networking Enterprise networking routers and switches

Wireless access points (WAP)

VoIP phones

Radio frequency identification (RFID) tag readers

POS terminals

Security cameras


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        DuringRevenues during fiscal 2013, 20122016, 2015 and 2011,2014 were generated predominately by sales of our mixed-signal products accounted for substantially all of our revenue.products. The following summarizes our revenue by product category (in thousands):


 Fiscal Year  Fiscal Year 

 2013 2012 2011  2016 2015 2014 

Broad-based

 $281,777 $270,098 $208,697 

Internet of Things

 $314,614 $262,329 $209,005 

Broadcast

 199,837 186,067 169,548  157,746 161,787 204,256 

Infrastructure

 147,677 121,974 108,123 

Access

 98,473 107,129 113,380  77,589 98,736 99,320 
       

Revenues

 $580,087 $563,294 $491,625  $697,626 $644,826 $620,704 
       
       

Customers, Sales and Marketing

        We market our products through our direct sales force and through a network of independent sales representatives and distributors. Direct and distributor customers buy on an individual purchase order basis, rather than pursuant to long-term agreements.

        We consider our customer to be the end customer purchasing either directly from a distributor, a contract manufacturer or us. An end customer purchasing through a contract manufacturer typically instructs such contract manufacturer to obtain our products and incorporate such products with other components for sale by such contract manufacturer to the end customer. Although we actually sell the products to, and are paid by, the distributors and contract manufacturers, we refer to such end customer as our customer.

        Two Three of our distributors who sell to our customers, Edom Technology, Avnet and Avnet,Arrow Electronics, each represented 21%17%, 13% and 11% of our revenues during fiscal 2013,2016, respectively. No other distributor accounted for 10% or more of revenues for fiscal 2013.2016.


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        During fiscal 2013,2016, our ten largest end customers accounted for 41%25% of our revenues. We had oneno customer Samsung, whose purchases across a variety of product areasthat represented 15%more than 10% of our revenues during this period. Our major customers include Alcatel, Cisco, Harman Becker, Huawei, LG Electronics, Pace, Samsung, Technicolor, Varian Medical Systems and ZTE.

        We maintain numerous sales offices in North America, EuropeAsia, the Americas and Asia.Europe. Revenue is attributed to a geographic area based on the shipped-to location. The percentage of our revenues derived from outside of the United States was 88%86% in fiscal 2013.2016. For further information regarding our revenues and long-lived assets by geographic area, see Note 18,17,Segment Information, to the Consolidated Financial Statements.

        Our direct sales force is comprised of a number of sales professionals who possess varied levels of responsibility and experience, including directors, country managers, regional sales managers, district sales managers, strategic account managers, field sales engineers and sales representatives. We also utilize independent sales representatives and distributors to generate sales of our products. We have relationships with many independent sales representatives and distributors worldwide whom we have selected based on their understanding of the mixed-signal IC marketplace and their ability to provide effective field sales applications support for our products.

        Our marketing efforts are targeted at both identified industry leaders and emerging market participants. Direct marketing activities are supplemented by a focused marketing communications effort that seeks to raise awareness of our company and products. Our public relations efforts are focused on leading trade and business publications. Our external website is used to deliver corporate and product information. We also pursue targeted advertising in key trade publications and we have a cooperative marketing program that allows our distributors and representatives to promote our products to their local markets in conjunction with their own advertising activities. Finally, we maintain


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a presence at strategic trade shows and industry events. These activities, in combination with direct sales activities, help drive demand for our products.

        Due to the complex and innovative nature of our ICs,products, we employ experienced applications engineers who work closely with customers and distributors to support the design-win process, and can significantly accelerate the customer's time to market. A design-win occurs when a customer has designed our ICs into its product architecture and ordered product from us. A considerable amount of effort to assist the customer in incorporating our ICs into its products is typically required prior to any sale. In many cases, our innovative ICs require significantly different implementations than existing approaches and, therefore, successful implementations may require extensive communication with potential customers. The amount of time required to achieve a design-win can vary substantially depending on a customer's development cycle, which can be relatively short (such as three months) or very long (such as two years) based on a wide variety of customer factors. Not all design wins ultimately result in revenue.revenue, or may result in less revenue than expected. However, once a completed design architecture has been implemented and produced in high volumes, our customers are reluctant to significantly alter their designs due to this extensive design-win process. We believe this process, coupled with our intellectual property protection, promotes relatively longer product life cycles for our ICsproducts and high barriers to entry for competitive products, even if such competing products are offered at lower prices. Our close collaboration with our customers provides us with knowledge of derivative product ideas or completely new product line offerings that may not otherwise arise in other new product discussions.

Research and Development

        Through our research and development efforts, we leverage experienced analog and mixed-signal engineering talent and expertise to create new ICs that integrate functions typically performed inefficiently by multiple discrete components. This integration generally results in lower costs, smaller die sizes, lower power demands and enhanced price/performance characteristics. We attempt to reuse successful techniques for integration in new applications where similar benefits can be realized. We


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believe that we have attracted many of the best engineers in our industry. We believe that reliable and precise analog and mixed-signal ICs can only be developed by teams of engineers who have significant analog experience and are familiar with the intricacies of designing these ICs for commercial volume production. The development of test methodologies is just one example of a critical activity requiring experience and know-how to enable the rapid release of a new product for commercial success. We have accumulated a vast set of trade secrets that allow us to pursue innovative approaches to mixed-signal problems that are difficult for competitors to duplicate. We highly value our engineering talent and strive to maintain a very high bar when bringing new recruits to the company.

        Research and development expenses were $157.8$199.7 million, $138.0$188.1 million and $136.0$173.0 million and in fiscal 2013, 20122016, 2015 and 2011,2014, respectively.

Technology

        Our product development process facilitates the design of highly-innovative, analog-intensive, mixed-signal ICs. Our engineers' deep knowledge of existing and emerging standards and performance requirements helps us to assess the technical feasibility of a particular IC. We target areas where we can provide compelling product improvements. Once we have solved the primary challenges, our field application engineers continue to work closely with our customers' design teams to maintain and develop an understanding of our customers' needs, allowing us to formulate derivative products and refined features.

        In providing mixed-signal ICs for our customers, we believe our key competitive advantages are:


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        To fully capitalize on these advantages, we have assembled a world-class development team with exceptional analog and mixed-signal design expertise led by accomplished senior engineers.

        We believe that our most significant core competency is world-class analog and RF design capability. Additionally, we strive to design substantially all of our ICs in standard CMOS processes. While it is often significantly more difficult to design analog ICs in CMOS, CMOS provides multiple benefits versus existing alternatives, including significantly reduced cost, reduced technology risk and greater worldwide foundry capacity. CMOS is the most commonly used process technology for manufacturing digital ICs and as a result is most likely to be used for the manufacturing of ICs with finer line geometries. These finer line geometries can enable smaller and faster ICs. By designing our ICs in CMOS, we enable our products to benefit from this trend towards finer line geometries, which allows us to integrate more digital functionality into our mixed-signal ICs.

        Designing analog and mixed-signal ICs is significantly more complicated than designing stand alonestandalone digital ICs. While advanced software tools exist to help automate digital IC design, there are far fewer tools for advanced analog and mixed-signal IC design. In many cases, our analog circuit design efforts begin at the fundamental transistor level. We believe that we have a demonstrated ability to design the most difficult analog and RF circuits using standard CMOS technologies.


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        We consider the partitioning of a circuit to be a proprietary and creative design technique. Deep systems knowledge allows us to use our digital signal processing (DSP) design expertise to maximize the price/performance characteristics of both the analog and digital functions and allow our ICs to work in an optimized manner to accomplish particular tasks. Generally, we attempt to move analog functions into the digital domain as quickly as possible, creating system efficiencies without compromising performance. These patented approaches require our advanced DSP and systems expertise. We then leverage our firmware know-how to change the 'personality' of our devices, optimizing features and functions needed by various markets we serve. For example, our broadcast audio products use a proven digital low-IF receiver and transmitter architecture to deliver superior RF performance and interference rejection compared to traditional, analog-only approaches. Digital signal processing is utilized to optimize sound quality under varying signal conditions, enabling a better consumer experience. Firmware has enabled us to rapidly expand the portfolio to address multiple markets without substantial silicon changes, including shortwave, longwave, analog tuned, digital tuned and even high performance HD-capable automotive radios.

        We have the talent and circuit integration methodologies required to combine precision analog, high-speed digital, flash memory and in-system programmability into a single, monolithic CMOS integrated circuit. Our microcontroller products are designed to capture an external analog signal, convert it to a digital signal, compute digital functions on the stream of data and then communicate the results through a standard digital interface. The ability to develop standard products with the broadest possible customer application base while being cost efficient with the silicon area of the monolithic CMOS integrated circuit requires a keen sense of customer value and engineering capabilities.


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Additionally, to manage the wide variety of signals on a monolithic piece of silicon including electrical noise, harmonics and other electronic distortions requires a fundamental knowledge of device physics and accumulated design expertise.

        Our software expertise allows us to develop products for markets where intelligent data capture, high-performance processing and communication are increasingly important product differentiators. The software we have developed to address these markets enable machine-to-machine communications, providing intelligence to electronic systems. Our products integrate high-performance, low-power wireless and microcontroller ICs with reliable and scalable software into a flexible and robust networking platform.

        The demand for low-power, small-footprint wireless technology is accelerating as more and more IP-enabled end points are being connected to the Internet of Things (IoT). Our software enables a broad range of power-sensitive applications for the IoT, including smart energy, home automation, security and other connected products. We believe that the combination of our software and IC design expertise differentiates us from many of our competitors.

        As the IoT continues to mature, a new class of embedded applications is emerging, presenting feature-rich and task-intensive use cases. This growing complexity is driving the need for real-time operating systems to help simplify software development for IoT applications by coordinating and prioritizing multiprotocol connectivity, SoC peripherals and other system-level activities. In addition to being able to manage numerous application tasks, an RTOS enhances scalability, and makes complex applications predictable and reliable. To address these application needs, we acquired Micrium, an embedded RTOS provider. Micrium has established itself as a reliable, high performance and trusted RTOS software platform, with an installed base that has grown to millions of devices.


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        The market for wireless modules has grown as customers search for solutions that provide turnkey wireless connectivity to their products. The development of modules is difficult due to stringent requirements, including high levels of integration and programmability, performance, reliability, security and power efficiency. In addition, designs must meet numerous wireless standards deployed in various environments and serving diverse requirements.

        Our combined expertise in IC design and software allows us to engineer the development of our modules to create a robust, high-performance connection in challenging wireless environments. We have developed wireless modules based on numerous wireless standards, including Bluetooth, zigbee, Thread, Wi-Fi and sub-GHz. We believe our demonstrated proficiency in the design of modules provides our customers with significant advantages.

        Our focused expertise in mixed-signal ICs is the result of the breadth of engineering talent we have assembled with experience working in analog-intensive CMOS design for a wide variety of applications. This expertise, which we consider a competitive advantage, is the foundation of our in-depth understanding of the technology and trends that impact electronic systems and markets. Our expertise includes:

        Our understanding of the role of analog/digital interfaces within electronic systems, standards evolution, and end market drivers enables us to identify product development opportunities and capitalize on market trends.

Manufacturing

        As a fabless semiconductor company, we conduct IC design and development in our facilities and electronically transfer our proprietary IC designs to third-party semiconductor fabricators who process silicon wafers to produce the ICs that we design. Our IC designs typically use industry-standard CMOS manufacturing process technology to achieve a level of performance normally associated with more expensive special-purpose IC fabrication technology. We believe the use of CMOS technology facilitates the rapid production of our ICs within a lower cost framework. Our IC production employs submicron process geometries which are readily available from leading foundry suppliers worldwide, thus increasing the likelihood that manufacturing capacity will be available throughout our products' life cycles. We currently partner with Taiwan Semiconductor Manufacturing Co. (TSMC) or itsTSMC's affiliates and Semiconductor Manufacturing International Corporation (SMIC) to manufacture the majority of our semiconductor wafers. We believe that our fabless manufacturing model significantly reduces our capital requirements and allows us to focus our resources on design, development and marketing of our ICs.


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        Once the silicon wafers have been produced, they are shipped directly to our third-party assembly subcontractors. The assembled ICs are then moved to the final testing stage. This operation can be performed by the same contractor that assembled the IC, other third-party test subcontractors or within our internal facilities prior to shipping to our customers. During fiscal 2013,2016, most of our units shipped


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were tested by offshore third-party test subcontractors. We expect that our utilization of offshore third-party test subcontractors will remain substantial during fiscal 2014.2017.

Backlog

        As of December 28, 2013, our backlog was approximately $109.9 million, compared to approximately $105.8 million as of December 29, 2012.        We include in backlog accepted product purchase orders from customers and worldwide distributor stocking orders. We only include orders with an expected shipping date from us within six months. Product orders in our backlog are subject to changes in delivery schedules or cancellation at the option of the purchaser typically without penalty. Our backlog may fluctuate significantly depending upon customer order patterns which may, in turn, vary considerably based on rapidly changing business circumstances. Shipments to distributors are not recognized as revenue until the products are sold by the distributors. Additionally, our arrangements with distributors typically provide for price protection and stock rotation activities. Accordingly, we do not believe that our backlog at any time is necessarily representative of actual sales for any succeeding period.

Competition

        The markets for semiconductors generally, and for analog and mixed-signal ICs in particular, are intensely competitive. We anticipate that the market for our products will continually evolve and will be subject to rapid technological change. We believe the principal competitive factors in our industry are:

 

Product size;

 

Power requirement;

 

Level of integration;

 

Customer support;

 

Product capabilities;

 

Reputation;

 

Reliability;

 

Ability to rapidly introduce new products to market;

Price;

Intellectual property; and

 

Price; Performance;

 

Intellectual property. Software.

Performance;

        We believe that we are competitive with respect to these factors, particularly because our ICs typically are smaller in size, are highly integrated, achieve high performance specifications at lower price points than competitive products and are manufactured in standard CMOS which generally enables us to supply them on a relatively rapid basis to customers to meet their product introduction schedules. However, disadvantages we face include our relatively short operating history in certain of our markets and the need for customers to redesign their products and modify their software to implement our ICs in their products.

        Due to our diversified product portfolio and the numerous markets and applications we serve, we target a relatively large number of competitors. We compete with Analog Devices, Atmel,Broadcom, Conexant, Cypress, Epson, Freescale, IDT, Lantiq,Marvell Technology Group, Maxim Integrated Products, MaxLinear, Microchip, Microsemi, Nordic Semiconductor, NXP Semiconductors, Qualcomm, Renesas, Sony Semiconductor, STMicroelectronics, Texas Instruments, Vectron International and others. We expect to face competition in the future from our current competitors, other manufacturers and designers of semiconductors and start-up semiconductor design companies. Our competitors may also offer bundled solutions offering a more complete product, which may negatively impact our competitive position despite the technical merits or advantages of our products. In addition, our customers could develop products or technologies internally that would replace their need for our products and would become a source of competition. We could also face competition from


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module makers or other systems suppliers that may include mixed-signal components in their products that could eliminate the need for our ICs.

        Many of our competitors and potential competitors have longer operating histories, greater name recognition, access to larger customer bases, complementary product offerings, and significantly greater financial, sales and marketing, manufacturing, distribution, technical and other resources than us. Current and potential competitors have established or may establish financial and strategic relationships between themselves or with our existing or potential customers, resellers or other third parties.


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Accordingly, it is possible that new competitors or alliances among competitors could emerge and rapidly acquire significant market share.

Intellectual Property

        Our future success depends in part upon our proprietary technology. We seek to protect our technology through a combination of patents, copyrights, trade secrets, trademarks and confidentiality procedures. As of December 28, 2013,31, 2016, we had approximately 1,1051,516 issued or pending United States patents in the IC field. We also frequently file for patent protection in a variety of international jurisdictions with respect to the proprietary technology covered by our U.S. patents and patent applications.foreign patents. There can be no assurance that patents will ever be issued with respect to theseour patent applications. Furthermore, it is possible that any patents held by us may be invalidated, circumvented, challenged or licensed to others. In addition, there can be no assurance that such patents will provide us with competitive advantages or adequately safeguard our proprietary rights. While we continue to file new patent applications with respect to our recent developments, existing patents are granted for prescribed time periods and will expire at various times in the future.

        We claim copyright protection for proprietary documentation for our products. We have filed for registration, or are in the process of filing for registration, the visual images of certain ICs with the U.S. Copyright Office. We have registered the "Silicon Labs" logo and a variety of other product and product family names as trademarks in the United States and selected foreign jurisdictions. All other trademarks, service marks or trade names appearing in this report are the property of their respective owners. We also attempt to protect our trade secrets and other proprietary information through agreements with our customers, suppliers, employees and consultants, and through other customary security measures. We intend to protect our rights vigorously, but there can be no assurance that our efforts will be successful. In addition, the laws of other countries in which our products are sold may not protect our products and intellectual property rights to the same extent as the laws of the United States.

        While our ability to effectively compete depends in large part on our ability to protect our intellectual property, we believe that our technical expertise and ability to introduce new products in a timely manner will be an important factor in maintaining our competitive position.

        Many participants in the semiconductor and electronics industries have a significant number of patents and have frequently demonstrated a readiness to commence litigation based on allegations of patent and other intellectual property infringement. From time to time, third parties may assert infringement claims against us. We may not prevail in any such litigation or may not be able to license any valid and infringed patents from third parties on commercially reasonable terms, if at all. Litigation, regardless of the outcome, is likely to result in substantial cost and diversion of our resources, including our management's time. Any such litigation could materially adversely affect us.

        Our licenses include industry standard licenses with our vendors, such as wafer fabrication tool libraries, third-party core libraries, computer-aided design applications and business software applications.


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Employees

        As of December 28, 2013,31, 2016, we employed 1,0601,252 people. Our success depends on the continued service of our key technical and senior management personnel and on our ability to continue to attract, retain and motivate highly skilled analog and mixed-signal engineers. The competition for such personnel is intense. We have never had a work stoppage and none of our U.S. employees are represented by a labor organization. We consider our employee relations to be good.


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Environmental Regulation

        Federal, state and local regulations impose various environmental controls on the storage, use, discharge and disposal of certain chemicals and gases used in the semiconductor industry. Our compliance with these laws and regulations has not had a material impact on our financial position or results of operations.

Available Information

        Our website address is www.silabs.com. Our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934 are available through the investor relations page of our website free of charge as soon as reasonably practicable after we electronically file such material with, or furnish it to, the Securities and Exchange Commission (SEC). Our website and the information contained therein or connected thereto are not intended to be incorporated into this Annual Report on Form 10-K.

Item 1A.    Risk Factors

Risks Related to our Business

We may not be able to maintain our historical growth and may experience significant period-to-period fluctuations in our revenues and operating results, which may result in volatility in our stock price

        Although we have generally experienced revenue growth in our history, we may not be able to sustain this growth. We may also experience significant period-to-period fluctuations in our revenues and operating results in the future due to a number of factors, and any such variations may cause our stock price to fluctuate. In some future period our revenues or operating results may be below the expectations of public market analysts or investors. If this occurs, our stock price may drop, perhaps significantly.

        A number of factors, in addition to those cited in other risk factors applicable to our business, may contribute to fluctuations in our revenues and operating results, including:


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        The markets for consumer electronics, for example, are characterized by rapid fluctuations in demand and seasonality that result in corresponding fluctuations in the demand for our products that are incorporated in such devices. Additionally, the rate of technology acceptance by our customers results in fluctuating demand for our products as customers are reluctant to incorporate a new IC into their products until the new IC has achieved market acceptance. Once a new IC achieves market acceptance, demand for the new IC can quickly accelerate to a point and then level off such that rapid historical growth in sales of a product should not be viewed as indicative of continued future growth. In addition, demand can quickly decline for a product when a new IC product is introduced and receives market acceptance. Due to the various factors mentioned above, the results of any prior quarterly or annual periods should not be relied upon as an indication of our future operating performance.

If we are unable to develop or acquire new and enhanced products that achieve market acceptance in a timely manner, our operating results and competitive position could be harmed

        Our future success will depend on our ability to develop or acquire new ICsproducts and product enhancements that achieve market acceptance in a timely and cost-effective manner. The development of mixed-signal ICs is highly complex, and we have at times experienced delays in completing the development and introduction of new products and product enhancements. Successful product development and market acceptance of our products depend on a number of factors, including:


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        We cannot provide any assurance that products which we recently have developed or may develop in the future will achieve market acceptance. We have introduced to market or are in development of many ICs.products. If our ICsproducts fail to achieve market acceptance, or if we fail to develop new products on a timely basis that achieve market acceptance, our growth prospects, operating results and competitive position could be adversely affected. The growth of the Internet of Things (IoT) market is dependent on the adoption of industry standards to permit devices to connect and communicate with each other. If the industry cannot agree on a common set of standards, then the growth of the IoT market may be slower than expected.

Our research and development efforts are focused on a limited number of new technologies and products, and any delay in the development, or abandonment, of these technologies or products by industry participants, or their failure to achieve market acceptance, could compromise our competitive position

        Our ICs are usedproducts serve as components and solutions in electronic devices in various markets. As a result, we have devoted and expect to continue to devote a large amount of resources to develop products based on new and emerging technologies and standards that will be commercially introduced in the future. Research and development expense during fiscal 20132016 was $157.8$199.7 million, or 27.2%28.6% of revenues. A number of large companies are actively involved in the development of these new technologies and standards. Should any of these companies delay or abandon their efforts to develop commercially available products based on new technologies and standards, our research and development efforts with respect to these technologies and standards likely would have no appreciable value. In addition, if we do not correctly anticipate new technologies and standards, or if the products that we develop based on these new technologies and standards fail to achieve market acceptance, our competitors may be better able to address market demand than we would. Furthermore, if markets for these new technologies and standards develop later than we anticipate, or do not develop at all, demand for our products that are currently in development would suffer, resulting in lower sales of these products than we currently anticipate.

We depend on a limited number of customers for a substantial portion of our revenues, and the loss of, or a significant reduction in orders from, any key customer could significantly reduce our revenues

        The loss of any of our key customers, or a significant reduction in sales to any one of them, would significantly reduce our revenues and adversely affect our business. During fiscal 2013, our ten largest customers accounted for 41% of our revenues. Some of the markets for our products are dominated by a small number of potential customers. Therefore, our operating results in the foreseeable future will continue to depend on our ability to sell to these dominant customers, as well as the ability of these customers to sell products that incorporate our IC products. In the future, these customers may decide not to purchase our ICs at all, purchase fewer ICs than they did in the past or alter their purchasing patterns, particularly because:


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        While we have been a significant supplier of ICs used in many of our customers' products, our customers regularly evaluate alternative sources of supply in order to diversify their supplier base, which increases their negotiating leverage with us and protects their ability to secure these components. We believe that any expansion of our customers' supplier bases could have an adverse effect on the prices we are able to charge and volume of product that we are able to sell to our customers, which would negatively affect our revenues and operating results.

Significant litigation over intellectual property in our industry may cause us to become involved in costly and lengthy litigation which could seriously harm our business

        In recent years, there has been significant litigation in the United States involving patents and other intellectual property rights. From time to time, we receive letters from various industry participants alleging infringement of patents, trademarks or misappropriation of trade secrets or from customers or suppliers requesting indemnification for claims brought against them by third parties. The exploratory nature of these inquiries has become relatively common in the semiconductor industry. We respond when we deem appropriate and as advised by legal counsel. We have been involved in litigation to protect our intellectual property rights in the past and may become involved in such litigation again in the future. We are currently involved in litigation in which we and certain of our customers have been accused of patent infringement related to our television tuner products. In the future, we may become involved in additional litigation to defend allegations of infringement asserted by others, both directly and indirectly as a result of certain industry-standard indemnities we may offer to our customers or suppliers. Legal proceedings could subject us to significant liability for damages or invalidate our proprietary rights. Legal proceedings initiated by us to protect our intellectual property rights could also result in counterclaims or countersuits against us. Any litigation, regardless of its outcome, would likely be time-consuming and expensive to resolve and would divert our management's time and attention. Most intellectualIntellectual property litigation also could force us to take specific actions, including:


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Any acquisitions we make could disrupt our business and harm our financial condition

        As part of our growth and product diversification strategy, we continue to evaluate opportunities to acquire other businesses, intellectual property or technologies that would complement our current offerings, expand the breadth of our markets or enhance our technical capabilities. The acquisitions that we have made and may make in the future entail a number of risks that could materially and adversely affect our business and operating results, including:


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        Future acquisitions also could cause us to incur debt or contingent liabilities or cause us to issue equity securities that could negatively impact the ownership percentages of existing shareholders.

We may be unable to protect our intellectual property, which would negatively affect our ability to compete

        Our products rely on our proprietary technology, and we expect that future technological advances made by us will be critical to sustain market acceptance of our products. Therefore, we believe that the protection of our intellectual property rights is and will continue to be important to the success of our business. We rely on a combination of patent, copyright, trademark and trade secret laws and restrictions on disclosure to protect our intellectual property rights. We also enter into confidentiality or license agreements with our employees, consultants, intellectual property providers and business partners, and control access to and distribution of our documentation and other proprietary information. Despite these efforts, unauthorized parties may attempt to copy or otherwise obtain and use our proprietary technology. Monitoring unauthorized use of our technology is difficult, and we cannot be certain that the steps we have taken will prevent unauthorized use of our technology, particularly in foreign countries where the laws may not protect our proprietary rights as fully as in the United States. We cannot be certain that patents will be issued as a result of our pending applications nor can we be certain that any issued patents would protect or benefit us or give us adequate protection from competing products. For example, issued patents may be circumvented or challenged and declared invalid or unenforceable. We also cannot be certain that others will not develop effective competing technologies on their own.


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Failure to manage our distribution channel relationships could impede our future growth

        The future growth of our business will depend in large part on our ability to manage our relationships with current and future distributors and sales representatives, develop additional channels for the distribution and sale of our products and manage these relationships. During fiscal 2016, 68% of our revenue was derived from distributors. As we execute our indirect sales strategy, we must manage the potential conflicts that may arise with our direct sales efforts. For example, conflicts with a distributor may arise when a customer begins purchasing directly from us rather than through the distributor. The inability to successfully execute or manage a multi-channel sales strategy could impede our future growth. In addition, relationships with our distributors often involve the use of price protection and inventory return rights. This often requires a significant amount of sales management's time and system resources to manage properly.

We depend on a limited number of customers for a significant portion of our revenues, and the loss of, or a significant reduction in orders from, any key customer could significantly reduce our revenues

        The loss of any of our key customers, or a significant reduction in sales to any one of them, would significantly reduce our revenues and adversely affect our business. During fiscal 2016, our ten largest customers accounted for 25% of our revenues. Some of the markets for our products are dominated by a small number of potential customers. Therefore, our operating results in the foreseeable future will continue to depend on our ability to sell to these dominant customers, as well as the ability of these customers to sell products that incorporate our IC products. In the future, these customers may decide not to purchase our products at all, purchase fewer products than they did in the past or alter their purchasing patterns, particularly because:

        Our customers regularly evaluate alternative sources of supply in order to diversify their supplier base, which increases their negotiating leverage with us and protects their ability to secure these components. We believe that any expansion of our customers' supplier bases could have an adverse effect on the prices we are able to charge and volume of product that we are able to sell to our customers, which would negatively affect our revenues and operating results.

We are subject to increased inventory risks and costs because we build our products based on forecasts provided by customers before receiving purchase orders for the products

        In order to ensure availability of our products for some of our largest customers, we start the manufacturing of our products in advance of receiving purchase orders based on forecasts provided by


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these customers. However, these forecasts do not represent binding purchase commitments and we do not recognize sales for these products until they are shipped to the customer. As a result, we incur inventory and manufacturing costs in advance of anticipated sales. Because demand for our products may not materialize, manufacturing based on forecasts subjects us to increased risks of high inventory carrying costs, increased obsolescence and increased operating costs. These inventory risks are exacerbated when our customers purchase indirectly through contract manufacturers or hold


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component inventory levels greater than their consumption rate because this causes us to have less visibility regarding the accumulated levels of inventory for such customers. A resulting write-off of unusable or excess inventories would adversely affect our operating results.

Our products are complex and may contain errors which could lead to product liability, an increase in our costs and/or a reduction in our revenues

        Our products are complex and may contain errors, particularly when first introduced or as new versions are released. Our new products are increasingly being designed in more complex processes, include higher levels of software and hardware integration in modules and system-level solutions and/or include elements provided by third parties which further increasesincrease the risk of errors. We rely primarily on our in-house testing personnel to design test operations and procedures to detect any errors or vulnerabilities prior to delivery of our products to our customers. Because our products are manufactured by third parties, should

        Should problems occur in the operation or performance of our ICs,products, we may experience delays in meeting key introduction dates or scheduled delivery dates to our customers. These errors also could cause us to incur significant re-engineering costs, divert the attention of our engineering personnel from our product development efforts and cause significant customer relations and business reputation problems. Any defects could result in refunds or other liability or require product replacement or recall or we could be obligated to accept product returns.recall. Any of the foregoing could impose substantial costs and harm our business.

        Product liability, data breach or cyber liability claims may be asserted with respect to our products. Our products are typically sold at prices that are significantly lower than the cost of the end-products into which they are incorporated. A defect or failure in our product could cause failure in our customer's end-product, so we could face claims for damages that are disproportionately higher than the revenues and profits we receive from the products involved. Furthermore, product liability risks are particularly significant with respect to medical and automotive applications because of the risk of serious harm to users of these products. There can be no assurance that any insurance we maintain will sufficiently protect us from any such claims.

We rely on third parties to manufacture, assemble and test our products and the failure to successfully manage our relationships with our manufacturers and subcontractors would negatively impact our ability to sell our products

        We do not have our own wafer fab manufacturing facilities. Therefore, we rely on third-party vendors to manufacture the ICsproducts we design. We also currently rely on Asian third-party assembly subcontractors to assemble and package the silicon chips provided by the wafers for use in final products. Additionally, we rely on these offshore subcontractors for a substantial portion of the testing requirements of our products prior to shipping. We expect utilization of third-party subcontractors to continue in the future.

        The cyclical nature of the semiconductor industry drives wide fluctuations in available capacity at third-party vendors. On occasion, we have been unable to adequately respond to unexpected increases in customer demand due to capacity constraints and, therefore, were unable to benefit from this incremental demand. We may be unable to obtain adequate foundry, assembly or test capacity from our third-party subcontractors to meet our customers' delivery requirements even if we adequately forecast customer demand.


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        There are significant risks associated with relying on these third-party foundries and subcontractors, including:


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    Reduced control over delivery schedules and quality;

    Limited warranties on wafers or products supplied to us;

    Potential increases in prices or payments in advance for capacity;

    Increased need for international-based supply, logistics and financial management;

    Their inability to supply or support new or changing packaging technologies; and

    Low test yields.

        We typically do not have long-term supply contracts with our third-party vendors which obligate the vendor to perform services and supply products to us for a specific period, in specific quantities, and at specific prices. Our third-party foundry, assembly and test subcontractors typically do not guarantee that adequate capacity will be available to us within the time required to meet demand for our products. In the event that these vendors fail to meet our demand for whatever reason, we expect that it would take up to 12 months to transition performance of these services to new providers. Such a transition may also require qualification of the new providers by our customers or their end customers.

        Since our inception, mostMost of the silicon wafers for the products that we have shippedsold were manufactured either by TSMCTaiwan Semiconductor Manufacturing Co. (TSMC) or its affiliates.TSMC's affiliates or by Semiconductor Manufacturing International Corporation (SMIC). Our customers typically complete their own qualification process. If we fail to properly balance customer demand across the existing semiconductor fabrication facilities that we utilize or are required by our foundry partners to increase, or otherwise change the number of fab lines that we utilize for our production, we might not be able to fulfill demand for our products and may need to divert our engineering resources away from new product development initiatives to support the fab line transition, which would adversely affect our operating results.

        We monitor the financial condition of our third-party foundries and subcontractor partners. In April 2013, we received notice that Telefunken Semiconductors GmbH & Co (TSG), a wafer supplier for our high-voltage products, had filed an insolvency proceeding in Germany. Between April 2013 and December 3, 2013, the operations of TSG were managed by a trustee appointed by the German bankruptcy court. On December 3, 2013, all of the saleable assets of TSG were purchased by Donauplaza GmbH. Donauplaza is now operating the former foundry of TSG and supplying wafers to us.

        We do not have a history of working with Donauplaza. Donauplaza's ability to successfully operate a wafer foundry is unknown. If Donauplaza is unable to successfully continue the operations of TSG, the supply of the wafers provided to us by Donauplaza could be reduced or discontinued. We have accumulated a supply of inventory of the affected products based on the possibility of a reduction or discontinuation of supply. We are qualifying a new vendor as an alternative source for such wafers. If there is a disruption in the supply of wafers and if the time required for qualification of a new vendor by us or by our customers and their end-customers takes longer than expected, we might not be able to fulfill demand for such products. Any reduction in the supply for these products could significantly reduce our revenues, which would adversely affect our operating results.


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Our customers require our products to undergo a lengthy and expensive qualification process without any assurance of product sales

        Prior to purchasing our products, our customers require that our products undergo an extensive qualification process, which involves testing of the products in the customer's system as well as 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 ICproduct or software, changes in the IC'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 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 impede our growth and cause our business to suffer.

We have substantial international activities,are a global company, which subjects us to additional business risks including logistical and financial complexity, political instability and currency fluctuations

        We have established international subsidiaries and have opened offices in international markets to support our activities in EuropeAsia, the Americas and Asia.Europe. This has included the establishment of a headquarters in Singapore for non-U.S. operations. The percentage of our revenues derived from outside of the United States was 88%86% during fiscal 2013.2016. We may not be able to maintain or increase international


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global market demand for our products. Our international operations are subject to a number of risks, including:

    Complexity and costs of managing international operations and related tax obligations, including our headquarters for non-U.S. operations in Singapore;

    Protectionist laws and business practices that favor local competition in some countries;practices;

    Difficulties related to the protection of our intellectual property rights in some countries;

    Multiple, conflicting and changing tax and other laws and regulations that may impact both our international and domestic tax and other liabilities and result in increased complexity and costs;

    Longer sales cycles;

    Greater difficulty in accounts receivable collection and longer collection periods;

    High levels of distributor inventory subject to price protection and rights of return to us;

    Political and economic instability;

    Greater difficulty in hiring and retaining qualified technical sales and applications engineers and administrative personnel; and

    The need to have business and operations systems that can meet the needs of our international business and operating structure.

        To date, substantially all of our sales to international customers and purchases of components from international suppliers have been denominated in U.S. dollars. As a result, an increase in the value of the U.S. dollar relative to foreign currencies could make our products more expensive for our international customers to purchase, thus rendering our products less competitive. Similarly, a decrease in the value of the U.S. dollar could reduce our buying power with respect to international suppliers.


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Our products incorporate technology licensed from third parties

        We incorporate technology (including software) licensed from third parties in our products. We could be subjected to claims of infringement regardless of our lack of involvement in the development of the licensed technology. Although a third-party licensor is typically obligated to indemnify us if the licensed technology infringes on another party's intellectual property rights, such indemnification is typically limited in amount and may be worthless if the licensor becomes insolvent. SeeSignificant litigation over intellectual property in our industry may cause us to become involved in costly and lengthy litigation which could seriously harm our business. Furthermore, any failure of third-party technology to perform properly would adversely affect sales of our products incorporating such technology.

Our inability to manage growth could materially and adversely affect our business

        Our past growth has placed, and any future growth of our operations will continue to place, a significant strain on our management personnel, systems and resources. We anticipate that we will need to implement a variety of new and upgraded sales, operational and financial enterprise-wide systems, information technology infrastructure, procedures and controls, including the improvement of our accounting and other internal management systems to manage this growth and maintain compliance with regulatory guidelines, including Sarbanes-Oxley Act requirements. To the extent our business grows, our internal management systems and processes will need to improve to ensure that we remain in compliance. We also expect that we will need to continue to expand, train, manage and motivate our workforce. All of these endeavors will require substantial management effort, and we anticipate that we will require additional management personnel and internal processes to manage these efforts and to plan for the succession from time to time of certain persons who have been key management and technical personnel. If we are unable to effectively manage our expanding global operations, including our international headquarters in Singapore, our business could be materially and adversely affected.

Our products incorporate technology licensed from third parties

        We incorporate technology (including software) licensed from third parties in our products. We could be subjected to claims of infringement regardless of our lack of involvement in the development of the licensed technology. Although a third-party licensor is typically obligated to indemnify us if the licensed technology infringes on another party's intellectual property rights, such indemnification is typically limited in amount and may be worthless if the licensor becomes insolvent. SeeSignificant litigation over intellectual property in our industry may cause us to become involved in costly and lengthy litigation which could seriously harm our business. Furthermore, any failure of third-party technology to perform properly would adversely affect sales of our products incorporating such technology.


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We are subject to risks relating to product concentration

        We derive a substantial portion of our revenues from a limited number of products, and we expect these products to continue to account for a large percentage of our revenues in the near term. Continued market acceptance of these products, is therefore, critical to our future success. In addition, substantially all of our products that we have sold include technology related to one or more of our issued U.S. patents. If these patents are found to be invalid or unenforceable, our competitors could introduce competitive products that could reduce both the volume and price per unit of our products. Our business, operating results, financial condition and cash flows could therefore be adversely affected by:

    A decline in demand for any of our more significant products;

    Failure of our products to achieve continued market acceptance;

    Competitive products;

    New technological standards or changes to existing standards that we are unable to address with our products;

    A failure to release new products or enhanced versions of our existing products on a timely basis; and

    The failure of our new products to achieve market acceptance.

We are subject to credit risks related to our accounts receivable

        We do not generally obtain letters of credit or other security for payment from customers, distributors or contract manufacturers. Accordingly, we are not protected against accounts receivable


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default or bankruptcy by these entities. The current economic situation could increase the likelihood of such defaults and bankruptcies. Our ten largest customers or distributors represent a substantial majority of our accounts receivable. If any such customer or distributor, or a material portion of our smaller customers or distributors, were to become insolvent or otherwise not satisfy their obligations to us, we could be materially harmed.

We depend on our key personnel to manage our business effectively in a rapidly changing market, and if we are unable to retain our current personnel and hire additional personnel, our ability to develop and successfully market our products could be harmed

        We believe our future success will depend in large part upon our ability to attract and retain highly skilled managerial, engineering, sales and marketing personnel. We believe that our future success will be dependent on retaining the services of our key personnel, developing their successors and certain internal processes to reduce our reliance on specific individuals, and on properly managing the transition of key roles when they occur. There is currently a shortage of qualified personnel with significant experience in the design, development, manufacturing, marketing and sales of analog and mixed-signal ICs.products. In particular, there is a shortage of engineers who are familiar with the intricacies of the design and manufacturability of analog elements, and competition for such personnel is intense. Our key technical personnel represent a significant asset and serve as the primary source for our technological and product innovations. We may not be successful in attracting and retaining sufficient numbers of technical personnel to support our anticipated growth. The loss of any of our key employees or the inability to attract or retain qualified personnel both in the United States and internationally, including engineers, sales, applications and marketing personnel, could delay the development and introduction of, and negatively impact our ability to sell, our products.


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Any dispositions could harm our financial condition

        Any disposition of a product line would entail a number of risks that could materially and adversely affect our business and operating results, including:

    Diversion of management's time and attention from our core business;

    Difficulties separating the divested business;

    Risks to relations with customers who previously purchased products from our disposed product line;

    Reduced leverage with suppliers due to reduced aggregate volume;

    Risks related to employee relations;

    Risks associated with the transfer and licensing of intellectual property;

    Security risks and other liabilities related to the transition services provided in connection with the disposition;

    Tax issues associated with dispositions; and

    Disposition-related disputes, including disputes over earn-outs and escrows.

Our stock price may be volatile

        The market price of our common stock has been volatile in the past and may be volatile in the future. The market price of our common stock may be significantly affected by the following factors:

    Actual or anticipated fluctuations in our operating results;


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    Changes in financial estimates by securities analysts or our failure to perform in line with such estimates;

    Changes in market valuations of other technology companies, particularly semiconductor companies;

    Announcements by us or our competitors of significant technical innovations, acquisitions, strategic partnerships, joint ventures or capital commitments;

    Introduction of technologies or product enhancements that reduce the need for our products;

    The loss of, or decrease in sales to, one or more key customers;

    A large sale of stock by a significant shareholder;

    Dilution from the issuance of our stock in connection with acquisitions;

    The addition or removal of our stock to or from a stock index fund;

    Departures of key personnel;

    The required expensing of stock awards; and

    The required expensing of stock awards.changes in our reported revenue and revenue recognition accounting policy expected under Accounting Standards Update (ASU) No. 2014-09,Revenue from Contracts with Customers (Topic 606).

        The stock market has experienced extreme volatility that often has been unrelated to the performance of particular companies. These market fluctuations may cause our stock price to fall regardless of our performance.


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Most of our current manufacturers, assemblers, test service providers, distributors and customers are concentrated in the same geographic region, which increases the risk that a natural disaster, epidemic, labor strike, war or political unrest could disrupt our operations or sales

        Most of TSMC'sour foundries and several of our assembly and test subcontractors' sites are located in Taiwan and most of our other foundry, assembly and test subcontractors are located in the Pacific Rim region. In addition, many of our customers are located in the Pacific Rim region. The risk of earthquakes in Taiwan and the Pacific Rim region is significant due to the proximity of major earthquake fault lines in the area. Earthquakes, tsunamis, fire, flooding, lack of water or other natural disasters, an epidemic, political unrest, war, labor strikes or work stoppages in countries where our semiconductor manufacturers, assemblers and test subcontractors are located, likely would result in the disruption of our foundry, assembly or test capacity. There can be no assurance that alternate capacity could be obtained on favorable terms, if at all.

        A natural disaster, epidemic, labor strike, war or political unrest where our customers' facilities are located would likely reduce our sales to such customers. North Korea's geopolitical maneuverings have created unrest. Such unrest could create economic uncertainty or instability, could escalate to war or otherwise adversely affect South Korea and our South Korean customers and reduce our sales to such customers, which would materially and adversely affect our operating results. In addition, a significant portion of the assembly and testing of our products occurs in South Korea. Any disruption resulting from these events could also cause significant delays in shipments of our products until we are able to shift our manufacturing, assembling or testing from the affected subcontractor to another third-party vendor.

The semiconductor manufacturing process is highly complex and, from time to time, manufacturing yields may fall below our expectations, which could result in our inability to satisfy demand for our products in a timely manner and may decrease our gross margins due to higher unit costs

        The manufacturing of our products is a highly complex and technologically demanding process. Although we work closely with our foundries and assemblers to minimize the likelihood of reduced


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manufacturing yields, we have from time to time experienced lower than anticipated manufacturing yields. Changes in manufacturing processes or the inadvertent use of defective or contaminated materials could result in lower than anticipated manufacturing yields or unacceptable performance deficiencies, which could lower our gross margins. If our foundries fail to deliver fabricated silicon wafers of satisfactory quality in a timely manner, we will be unable to meet our customers' demand for our products in a timely manner, which would adversely affect our operating results and damage our customer relationships. Additionally, we are beginning to utilize microelectromechanical systems (MEMS) in certain of our timing products rather than the pure CMOS manufacturing process that we have traditionally utilized. We have less operating history with MEMS IC design and MEMS IC manufacturing processes. If we are unable to successfully execute the design and product qualification of MEMS-based products we may encounter lower yields and reduced manufacturing capacity.

We depend on our customers to support our products, and some of our customers offer competing products

        We rely on our customers to provide hardware, software, intellectual property indemnification and other technical support for the products supplied by our customers. If our customers do not provide the required functionality or if our customers do not provide satisfactory support for their products, the demand for these devices that incorporate our products may diminish or we may otherwise be materially adversely affected. Any reduction in the demand for these devices would significantly reduce our revenues.

        In certain products, some of our customers offer their own competitive products. These customers may find it advantageous to support their own offerings in the marketplace in lieu of promoting our products.


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Our debt could adversely affect our operations and financial condition

        We believe we have the ability to service our debt under our credit facilities, but our ability to make the required payments thereunder when due depends upon our future performance, which will be subject to general economic conditions, industry cycles and other factors affecting our operations, including risk factors described under this Item 1A, many of which are beyond our control. Our credit facilities also contain covenants, including financial covenants. If we breach any of the covenants under our credit facilities and do not obtain appropriate waivers, then, subject to any applicable cure periods, our outstanding indebtedness thereunder could be declared immediately due and payable.

We could seek to raise additional debt or equity capital in the future, but additional capital may not be available on terms acceptable to us, or at all

        We believe that our existing cash, cash equivalents, investments and credit under our credit facilities will be sufficient to meet our working capital needs, capital expenditures, investment requirements and commitments for at least the next 12 months. However, our ability to borrow further under the credit facilities is dependent upon our ability to satisfy various conditions, covenants and representations. It is possible that we may need to raise additional funds to finance our activities or to facilitate acquisitions of other businesses, products, intellectual property or technologies. We believe we could raise these funds, if needed, by selling equity or debt securities to the public or to selected investors. In addition, even though we may not need additional funds, we may still elect to sell additional equity or debt securities or obtain credit facilities for other reasons. However, we may not be able to obtain additional funds on favorable terms, or at all. If we decide to raise additional funds by issuing equity or convertible debt securities, the ownership percentages of existing shareholders would be reduced.


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We are a relatively small company withhave limited resources compared to some of our current and potential competitors and we may not be able to compete effectively and increase market share

        Some of our current and potential competitors have longer operating histories, significantly greater resources and name recognition and a larger base of customers than we have. As a result, these competitors may have greater credibility with our existing and potential customers. They also may be able to adopt more aggressive pricing policies and devote greater resources to the development, promotion and sale of their products than we can to ours. In addition, some of our current and potential competitors have already established supplier or joint development relationships with the decision makers at our current or potential customers. These competitors may be able to leverage their existing relationships to discourage their customers from purchasing products from us or persuade them to replace our products with their products. Our competitors may also offer bundled solutions offering a more complete product despite the technical merits or advantages of our products. These competitors may elect not to support our products which could complicate our sales efforts. These and other competitive pressures may prevent us from competing successfully against current or future competitors, and may materially harm our business. Competition could decrease our prices, reduce our sales, lower our gross margins and/or decrease our market share.

Provisions in our charter documents and Delaware law could prevent, delay or impede a change in control of us and may reduce the market price of our common stock

        Provisions of our certificate of incorporation and bylaws could have the effect of discouraging, delaying or preventing a merger or acquisition that a stockholder may consider favorable. For example, our certificate of incorporation and bylaws provide for:

    The division of our Board of Directors into three classes to be elected on a staggered basis, one class each year;

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    The ability of our Board of Directors to issue shares of our preferred stock in one or more series without further authorization of our stockholders;

    A prohibition on stockholder action by written consent;

    Elimination of the right of stockholders to call a special meeting of stockholders;

    A requirement that stockholders provide advance notice of any stockholder nominations of directors or any proposal of new business to be considered at any meeting of stockholders; and

    A requirement that a supermajority vote be obtained to amend or repeal certain provisions of our certificate of incorporation.

        We also are subject to the anti-takeover laws of Delaware which may discourage, delay or prevent someone from acquiring or merging with us, which may adversely affect the market price of our common stock.

Risks related to our industry

We are subject to the cyclical nature of the semiconductor industry, which has been subject to significant fluctuations

        The semiconductor industry is highly cyclical and is characterized by constant and rapid technological change, rapid product obsolescence and price erosion, evolving standards, short product life cycles and wide fluctuations in product supply and demand. The industry has experienced significant fluctuations, often connected with, or in anticipation of, maturing product cycles and new product introductions of both semiconductor companies' and their customers' products and fluctuations in general economic conditions. Deteriorating general worldwide economic conditions, including


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reduced economic activity, concerns about credit and inflation, increased energy costs, decreased consumer confidence, reduced corporate profits, decreased spending and similar adverse business conditions, would make it very difficult for our customers, our vendors, and us to accurately forecast and plan future business activities and could cause U.S. and foreign businesses to slow spending on our products. We cannot predict the timing, strength, or duration of any economic slowdown or economic recovery. If the economy or markets in which we operate deteriorate, our business, financial condition, and results of operations would likely be materially and adversely affected.

        Downturns have been characterized by diminished product demand, production overcapacity, high inventory levels and accelerated erosion of average selling prices. In the recent past, we believe the semiconductor industry suffered a downturn due in large part to adverse conditions in the global credit and financial markets, including diminished liquidity and credit availability, declines in consumer confidence, declines in economic growth, increased unemployment rates and general uncertainty regarding the economy. Such downturns may have a material adverse effect on our business and operating results.

        Upturns have been characterized by increased product demand and production capacity constraints created by increased competition for access to third-party foundry, assembly and test capacity. We are dependent on the availability of such capacity to manufacture, assemble and test our ICs.products. None of our third-party foundry, assembly or test subcontractors have provided assurances that adequate capacity will be available to us.

The average selling prices of our products could decrease rapidly which may negatively impact our revenues and gross margins

        We may experience substantial period-to-period fluctuations in future operating results due to the erosion of our average selling prices. We have reduced the average unit price of our products in anticipation of or in response to competitive pricing pressures, new product introductions by us or our


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competitors and other factors. If we are unable to offset any such reductions in our average selling prices by increasing our sales volumes, increasing our sales content per application or reducing production costs, our gross margins and revenues will suffer. To maintain our gross margin percentage, we will need to develop and introduce new products and product enhancements on a timely basis and continually reduce our costs. Our failure to do so could cause our revenues and gross margin percentage to decline.

Competition within the numerous markets we target may reduce sales of our products and reduce our market share

        The markets for semiconductors in general, and for mixed-signal ICsproducts in particular, are intensely competitive. We expect that the market for our products will continually evolve and will be subject to rapid technological change. In addition, as we target and supply products to numerous markets and applications, we face competition from a relatively large number of competitors. We compete with Analog Devices, Atmel,Broadcom, Conexant, Cypress, Epson, Freescale, IDT, Lantiq,Marvell Technology Group, Maxim Integrated Products, MaxLinear, Microchip, Microsemi, Nordic Semiconductor, NXP Semiconductors, Qualcomm, Renesas, Sony Semiconductor, STMicroelectronics, Texas Instruments, Vectron International and others. We expect to face competition in the future from our current competitors, other manufacturers and designers of semiconductors, and start-up semiconductor design companies. As the markets for communications products grow, we also may face competition from traditional communications device companies. These companies may enter the mixed-signal semiconductor market by introducing their own ICsproducts or by entering into strategic relationships with or acquiring other existing providers of semiconductor products. In addition, large companies may restructure their operations to create separate companies or may acquire new businesses that are focused on providing the types of products we produce or acquire our customers.

We may be the victim of cyber-attacks against our products and our networks, which could lead to liability and damage our reputation and financial results

        Many of our products focus on wireless connectivity and the IoT market and such connectivity may make these products particularly susceptible to cyber-attacks. We routinely face attacks attempting to breach our security protocols, gain access to or disrupt our computerized systems, or steal proprietary company, customer, partner or employee information. These attacks are sometimes successful. We may be subject to security breaches, employee error, theft, malfeasance, phishing schemes, ransomware, faulty password or data security management, or other irregularities. The theft, loss or misuse of personal or business data collected, used, stored or transferred by us to run our business could result in increased security costs or costs related to defending legal claims. Industrial espionage, theft or loss of our intellectual property data could lead to counterfeit products or harm the competitive position of our products and services. Costs to comply with and implement privacy-related and data protection measures could be significant. Federal, state or international privacy-related or data protection laws and regulations could result in proceedings against us by governmental entities or others. Attempted or successful attacks against our products and services could damage our reputation with customers or users and reduce demand for our products and services.

We may be subject to information technology failures that could damage our reputation, business operations and financial condition

        We rely on information technology for the effective operation of our business. Our systems are subject to damage or interruption from a number of potential sources, including natural disasters, accidents, power disruptions, telecommunications failures, acts of terrorism or war, computer viruses, theft, physical or electronic break-ins, cyber-attacks, sabotage, vandalism, or similar events or disruptions. Our security measures may not detect or prevent such security breaches. Any such


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compromise of our information security could result in the theft or unauthorized publication or use of our confidential business or proprietary information, result in the unauthorized release of customer, supplier or employee data, result in a violation of privacy or other laws, expose us to a risk of litigation or damage our reputation. In addition, our inability to use or access information systems at critical points in time could unfavorably impact the timely and efficient operation of our business, which could negatively affect our business and operating results.

        Third parties with which we conduct business, such as foundries, assembly and test contractors, distributors and customers, have access to certain portions of our sensitive data. In the event that these third parties do not properly safeguard our data that they hold, security breaches could result and negatively impact our reputation, business operations and financial results.

Our products must conform to industry standards and technology in order to be accepted by end users in our markets

        Generally, our products comprise only a part of a device. All components of such devices must uniformly comply with industry standards in order to operate efficiently together. We depend on companies that provide other components of the devices to support prevailing industry standards. Many of these companies are significantly larger and more influential in affecting industry standards than we are. Some industry standards may not be widely adopted or implemented uniformly, and competing standards may emerge that may be preferred by our customers or end users. If larger companies do not support the same industry standards that we do, or if competing standards emerge, market acceptance of our products could be adversely affected which would harm our business.

        Products for certain applications are based on industry standards that are continually evolving. Our ability to compete in the future will depend on our ability to identify and ensure compliance with these evolving industry standards. The emergence of new industry standards could render our products incompatible with products developed by other suppliers. As a result, we could be required to invest significant time and effort and to incur significant expense to redesign our products to ensure compliance with relevant standards. If our products are not in compliance with prevailing industry standards for a significant period of time, we could miss opportunities to achieve crucial design wins.

        Our pursuit of necessary technological advances may require substantial time and expense. We may not be successful in developing or using new technologies or in developing new products or product enhancements that achieve market acceptance. If our ICsproducts fail to achieve market acceptance, our growth prospects, operating results and competitive position could be adversely affected.

We may be subject to information technology failures that could damage our reputation, business operations and financial condition

        We rely on information technology for the effective operation of our business. Our systems are subject to damage or interruption from a number of potential sources, including natural disasters, accidents, power disruptions, telecommunications failures, acts of terrorism or war, computer viruses, physical or electronic break-ins, cyber attacks, sabotage, vandalism, or similar events or disruptions. Our security measures may not detect or prevent such security breaches. Any such compromise of our information security could result in the unauthorized publication of our confidential business or proprietary information, result in the unauthorized release of customer, supplier or employee data, result in a violation of privacy or other laws, expose us to a risk of litigation or damage our reputation. In addition, our inability to use or access these information systems at critical points in time could unfavorably impact the timely and efficient operation of our business, which could negatively affect our business and operating results.

        Third parties with which we conduct business, such as foundries, assembly and test contractors, and distributors, have access to certain portions of our sensitive data. In the event that these third parties do not properly safeguard our data that they hold, security breaches could result and negatively impact our business, operations and financial results.

Customer demands and new regulations related to conflict-free minerals may adversely affect us

        The Dodd-Frank Wall Street Reform and Consumer Protection Act imposes new disclosure requirements regarding the use of "conflict" minerals mined from the Democratic Republic of Congo and adjoining countries in products, whether or not these products are manufactured by third parties. These new requirements 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. We may also encounter challenges with our customers and stockholders if we are unable to certify that our products are conflict free.


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Item 1B.    Unresolved Staff Comments

        None.


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Item 2.    Properties

        Our corporate headquarters, housing engineering, sales and marketing, administration and test operations, is located in Austin, Texas. Our headquarters facilities consist of two buildings, which we purchased in 2012,own, that are located on land which we have leased through 2099. The buildings contain approximately 441,000 square feet of floor space, of which approximately 111,000130,000 square feet were leased to other tenants. In addition to these properties, we lease smaller facilities in various locations in the United States, Brazil, Canada, China, Finland, France, Germany, Hungary, India, Ireland, Italy, Japan, Norway, Singapore, South Korea, Taiwan and the United Kingdom for engineering, sales and marketing, administrative and manufacturing support activities. We believe that these facilities are suitable and adequate to meet our current operating needs.

Item 3.    Legal Proceedings

Patent Litigation

        On January 21, 2014, Cresta Technology Corporation ("Cresta Technology"), a Delaware corporation, filed a lawsuit against us, Samsung Electronics Co., Ltd., Samsung Electronics America, Inc., LG Electronics Inc. and LG Electronics U.S.A., Inc. in the United States District Court in the District of Delaware, alleging infringement of three United States Patent Nos. 7,075,585, 7,265,792 and 7,251,466.Patents (the "Cresta Patents"). The lawsuit relates to our family of television tuner products. Cresta Technology seeks unspecified compensatory and enhanced damages, attorney fees and a permanent injunction.Delaware District Court action has been stayed.

        On January 28, 2014, Cresta Technology also filed a complaint with the United States International Trade Commission ("ITC") alleging infringement of the same patentspatents. On September 29, 2015, the ITC issued its Final Determination, finding that all the patent claims asserted against our products were either invalid or not infringed and that Cresta Technology failed to establish the ITC's domestic industry requirement. The ITC found no violation by us Samsung and LG Electronicsterminated the investigation. On November 30, 2015, Cresta Technology filed an appeal of the ITC decision to the Federal Circuit. On March 8, 2016, pursuant to a stipulated dismissal, the Federal Circuit dismissed Cresta Technology's appeal in its entirety.

        In a parallel process, we challenged the validity of the claims of the Cresta Patents asserted in the ITC investigation through a series ofInter-Partes Review (IPR) proceedings at the Patent Trial and Appeal Board (PTAB) of the United States Patent and Trademark Office (USPTO). On October 21, 2015, the USPTO issued final written decisions on a first set of reviewed claims finding all of the reviewed claims invalid. On December 18, 2015, Cresta Technology appealed those adverse decisions to the United States Court of Appeals for the Federal Circuit as to this first USPTO determination. The Federal Circuit summarily affirmed the USPTO's first determination on November 8, 2016 and the mandate issued on December 16, 2016, rendering the USPTO's determination final.

        The USPTO instituted a second set of IPR proceedings against a second set of the remaining claims. On August 11, 2016, the PTAB issued its final written decisions in these proceedings and found all of these remaining claims unpatentable. On October 13, 2016, the patent owner, now known as CF Crespe LLC, filed a notice of appeal with the Federal Circuit seeking to preventoverturn the importation and saleUSPTO's final written decision as to a subset of allegedly infringing productsthe claims found unpatentable in this second set of IPR proceedings. That appeal is currently in briefing. No hearing date has been set.

        On March 18, 2016, Cresta Technology filed for chapter 7 bankruptcy in the United States.States Bankruptcy Court for the Northern District of California.

        On May 13, 2016, the Bankruptcy Court approved an agreement for DBD Credit Funding LLC ("DBD") to buy Cresta Technology's entire IP portfolio and certain related litigation. Following that sale, DBD (through an apparent assignee, CF Crespe LLC) has substituted in the Delaware District Court action, the appeal proceedings at the U.S. Court of Appeals for the Federal Circuit for the first


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set of IPR proceedings and the USPTO PTAB proceedings for the second set of IPRs replacing Cresta Technology.

        On July 16, 2014, we filed a lawsuit against Cresta Technology in the United States District Court in the Northern District of California alleging infringement of six United States Patents. We are seeking a permanent injunction and an award of damages and attorney fees. As a result of the chapter 7 bankruptcy filing by Cresta Technology, these proceedings were stayed. However, as a result of the May 13, 2016 sale order by the Bankruptcy Court, DBD and CF Crespe LLC were ordered to substitute in as Defendant for Cresta Technology. DBD and CF Crespe LLC have appealed the Bankruptcy Court's order in that regard. Subject to that appeal, the Company's patent infringement trial against DBD and CF Crespe LLC is set to begin October 2, 2017.

        As is customary in the semiconductor industry, we provide indemnification protection to our customers for intellectual property claims related to our products. We have not accrued any material liability on our Consolidated Balance Sheet related to such indemnification obligations in connection with the Cresta Technology litigation.

        We intend to continue to vigorously defend against these allegations.Cresta Technology's (now DBD and CF Crespe LLC's) allegations and to continue to pursue our claims against Cresta and their patents. At this time, we cannot predict the outcome of these matters or the resulting financial impact to us, if any.

        In 2012, MaxLinear, Inc., a Delaware corporation, and we engaged one another in three patent infringement lawsuits filed in the United States District Court for the Southern District of California, San Diego Division, and in the United States District Court for the Western District of Texas, Austin Division. The Texas Court determined that the dispute concerning MaxLinear's patents would proceed in the California Court. On May 16, 2013, MaxLinear filed an additional patent infringement lawsuit against us in the United States District Court for the Southern District of California. On October 3, 2013, we and MaxLinear executed a Settlement Agreement resolving all of the lawsuits between us. MaxLinear granted us a license to its patent portfolio for our accused products, and we granted MaxLinear a license to our patent portfolio for the accused MaxLinear products. As part of the settlement, MaxLinear made a one-time payment of $1.25 million to us. We and MaxLinear also entered into a 3-year covenant not to sue and agreed to dismiss all of the pending cases.

Other

        We are involved in various other legal proceedings that have arisen in the normal course of business. While the ultimate results of these matters cannot be predicted with certainty, we do not expect them to have a material adverse effect on our consolidated financial statements.Consolidated Financial Statements.

Item 4.    Mine Safety Disclosures

        Not applicable.


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Part II

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

Market Information and Holders

        Our registration statement (Registration No. 333-94853) under the Securities Act of 1933, as amended, relating to our initial public offering of our common stock became effective on March 23, 2000. Our common stock is quoted on the NASDAQ National Market (NASDAQ) under the symbol "SLAB". The table below shows the high and low per-share sales prices of our common stock for the periods indicated, as reported by NASDAQ. As of January 21, 2014,23, 2017, there were 11185 holders of record of our common stock.


 High Low  High Low 

Fiscal Year 2012

     

Fiscal Year 2015

     

First Quarter

 $48.50 $41.07  $52.83 $42.61 

Second Quarter

 43.42 32.00  58.54 49.85 

Third Quarter

 40.35 34.55  53.84 39.33 

Fourth Quarter

 42.98 35.00  54.72 42.06 

Fiscal Year 2013

 
 
 
 
 

Fiscal Year 2016

 
 
 
 
 

First Quarter

 $47.41 $39.65  $48.00 $36.56 

Second Quarter

 44.00 38.04  51.00 42.63 

Third Quarter

 46.21 38.16  59.35 45.94 

Fourth Quarter

 44.19 37.57  68.95 55.97 

Dividend Policy

        We have never declared or paid any cash dividends on our common stock and we do not intend to pay cash dividends in the foreseeable future. We currently expect to retain any future earnings to fund the operation and expansion of our business.


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Stock Performance Graph

        The graph depicted below shows a comparison of cumulative total stockholder returns for an investment in Silicon Laboratories Inc. common stock, the NASDAQ Composite Index the NASDAQ Electronic Components Index and the PHLX Semiconductor Index.

Company / Index
 01/03/09 01/02/10 01/01/11 12/31/11 12/29/12 12/28/13  12/31/11 12/29/12 12/28/13 01/03/15 01/02/16 12/31/16 

Silicon Laboratories Inc.

 $100.00 $189.28 $180.05 $169.87 $162.32 $165.69  $100.00 $95.56 $97.54 $109.42 $111.79 $149.70 

NASDAQ Composite

 $100.00 $144.45 $169.81 $167.85 $188.54 $267.16  $100.00 $115.15 $163.76 $188.49 $201.98 $219.89 

PHLX Semiconductor Index

 $100.00 $159.68 $183.23 $186.05 $204.93 $268.55  $100.00 $105.20 $150.62 $198.57 $195.45 $272.30 

(1)
The graph assumes that $100 was invested in our common stock and in each index at the market close on January 3, 2009,December 31, 2011, and that all dividends were reinvested. No cash dividends have been declared on our common stock.

(2)
Stockholder returns over the indicated period should not be considered indicative of future stockholder returns.

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Issuer Purchases of Equity Securities

        The following table summarizes repurchases of our common stock during the three months ended December 28, 201331, 2016 (in thousands, except per share amounts):

Period
 Total Number
of Shares
Purchased
 Average Price
Paid per
Share
 Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs
 Approximate
Dollar Value of
Shares that May
Yet Be Purchased
Under the Plans
or Programs
  Total Number
of Shares
Purchased
 Average Price
Paid per
Share
 Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs
 Approximate
Dollar Value of
Shares that May
Yet Be Purchased
Under the Plans
or Programs
 

September 29, 2013 - October 26, 2013

 42 $39.51 42 $40,557 

October 27, 2013 - November 23, 2013

 
286
 
$

39.32
 
286
 
$

29,301
 

November 24, 2013 - December 28, 2013

 
136
 
$

39.14
 
136
 
$

23,991
 
         

October 2, 2016 - October 29, 2016

 
 
$

 
 
$

59,474
 

October 30, 2016 - November 26, 2016

 
 
$

 
 
$

59,474
 

November 27, 2016 - December 31, 2016

 
 
$

 
 
$

59,474
 

Total

 464 $39.28 464     $    

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        In January 2013, ourAugust 2015, the Board of Directors authorized a program to repurchase up to $50$100 million of our common stock through December 2016. In January 2014.2017, the Board of Directors authorized a program to repurchase up to $100 million of our common stock through December 2017. The program allowsprograms allow for repurchases to be made in the open market or in private transactions, including structured or accelerated transactions, subject to applicable legal requirements and market conditions.

Item 6.    Selected Financial Data

        Please read this selected consolidated financial data in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operations," our Consolidated Financial Statements and the notes to those statements included in this Form 10-K.


 Fiscal Year  Fiscal Year 

 2013 2012 2011 2010 2009  2016 2015 2014 2013 2012 

 (in thousands, except per share data)
  (in thousands, except per share data)
 

Consolidated Statements of Income Data

                      

Revenues

 
$

580,087
 
$

563,294
 
$

491,625
 
$

493,341
 
$

441,020
  
$

697,626
 
$

644,826
 
$

620,704
 
$

580,087
 
$

563,294
 

Operating income

 $64,310 $85,675 $50,074 $86,671 $66,511  $66,277 $32,234 $51,421 $64,310 $85,675 

Net income

 $49,819 $63,548 $35,472 $73,242 $73,092(2) $61,494 $29,586 $38,021 $49,819 $63,548 

Earnings per share:

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 

Basic

 
$

1.17
 
$

1.51
 
$

0.82
 
$

1.63
 
$

1.62
  
$

1.47
 
$

0.70
 
$

0.88
 
$

1.17
 
$

1.51
 

Diluted

 $1.14 $1.47 $0.79 $1.57 $1.57  $1.45 $0.69 $0.87 $1.14 $1.47 

Consolidated Balance Sheet Data

 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 

Cash, cash equivalents and investments (1)

 
$

286,025
 
$

293,360
 
$

324,967
 
$

383,362
 
$

434,899
  
$

300,263
 
$

250,112
 
$

342,614
 
$

286,025
 
$

293,360
 

Working capital

 350,170 361,304 370,211 414,073 435,359  351,156 280,819 365,223 350,170 361,304 

Total assets

 991,150 871,966 705,991 727,658 742,838  1,081,844 1,011,463 1,042,561 991,150 871,966 

Long-term obligations

 143,441 115,615 24,214 22,372 24,403  115,191 108,028 121,191 143,441 115,615 

Total stockholders' equity

 738,562 649,973 598,939 625,430 629,796  826,958 761,114 758,056 738,562 649,973 

(1)
Reflects repurchases of $41 million, $71 million, $72 million, $26 million $62 million, $110 million, $140 million and $20$62 million of our common stock in fiscal 2016, 2015, 2014, 2013 and 2012, 2011, 2010respectively. Includes $5 million, $7 million, $7 million, $11 million and 2009,$11 million of long-term auction-rate securities investments in fiscal 2016, 2015, 2014, 2013 and 2012, respectively.

(2)
Includes a benefit related to the resolution of prior year uncertain tax benefits.

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

        The following discussion and analysis of financial condition and results of operations should be read in conjunction with the Consolidated Financial Statements and related notes thereto included elsewhere in this report. This discussion contains forward-looking statements. Please see the "Cautionary Statement" and "Risk Factors" above for discussions of the uncertainties, risks and assumptions associated with these statements. Our fiscal year-end financial reporting periods are a 52-or52- or 53-week year ending on the Saturday closest to December 31st.31. Fiscal 2013, 20122016 and 2011were2015 were 52-week years and ended on December 28, 2013, December 29, 201231, 2016 and December 31, 2011,January 2, 2016, respectively. Fiscal 2014 will have 53 weekswas a 53-week year with the extra week occurring in the fourth quarter of the year.year and ended on January 3, 2015.

Overview

        We are a provider of silicon, software and solutions for the Internet of Things (IoT), Internet infrastructure, industrial, consumer and automotive markets. We solve some of the electronics industry's toughest problems, providing customers with significant advantages in performance, energy savings, connectivity and design and develop proprietary, analog-intensive, mixed-signalsimplicity. Mixed-signal integrated circuits (ICs) for a broad range of applications. Mixed-signal ICs are electronic components that convert real-world analog signals, such as sound and radio waves, into digital signals that electronic products can process. Therefore, mixed-signal ICs are critical components in products addressing a variety of markets, including industrial, communications, consumer industrial and automotive. Our major customers include Alcatel, Cisco, Harman Becker, Huawei, LG Electronics, Pace, Samsung, Technicolor, Varian Medical Systems and ZTE.

        As a fabless semiconductor company, we rely on third-party semiconductor fabricators in Asia, and to a lesser extent the United States and Europe, to manufacture the silicon wafers that reflect our IC designs. Each wafer contains numerous die, which are cut from the wafer to create a chip for an IC. We rely on third parties in Asia to assemble, package, and, in most cases, test these devices and ship these units to our customers. Testing performed by such third parties facilitates faster delivery of products to our customers (particularly those located in Asia), shorter production cycle times, lower inventory requirements, lower costs and increased flexibility of test capacity.

        Our expertise in analog-intensive, high-performance, mixed-signal ICs and software enables us to develop highly differentiated solutions that address multiple markets. We group our products into the following categories:

    Broad-basedInternet of Things products, which include our microcontrollers, timing products (clocksmicrocontroller (MCU), wireless, sensor and oscillators), power and isolation devices, and sensors;analog products;

    Broadcast products, which include our broadcast audioconsumer and videoautomotive products;

    Infrastructure products, which include our timing products (clocks and oscillators), and isolation devices; and

    Access products, which include our Voice over IP (VoIP) products, embedded modems and our Power over Ethernet (PoE) devices.

Current Period Highlights

        Revenues increased $52.8 million in fiscal 2016 compared to fiscal 2015, primarily due to increased revenues from our IoT and Infrastructure products offset by decreases in revenues from our Access and Broadcast products. Infrastructure revenues in fiscal 2016 included $5.0 million from the sale of patents. Gross margin increased $40.7 million during the same period due primarily to increased product sales. Operating expenses increased $6.7 million in fiscal 2016 compared to fiscal 2015 due primarily to increased personnel-related expenses and new product introduction costs, offset by adjustments to the fair value of acquisition-related contingent consideration and decreased acquisition-related costs and legal fees.


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        We ended fiscal 2016 with $295.1 million in cash, cash equivalents and short-term investments. Net cash provided by operating activities was $128.9 million during fiscal 2016. Accounts receivable increased to $74.4 million at December 31, 2016 compared to January 2, 2016, representing 37 days sales outstanding (DSO). Inventory increased to $59.6 million at December 31, 2016 compared to January 2, 2016, representing 73 days of inventory (DOI). In fiscal 2016, we repurchased 0.9 million shares of our common stock for $40.5 million. In fiscal 2016, we settled the remaining amount of the contingent consideration to be paid in connection with the Energy Micro acquisition. The settlement amount was $16.0 million.

        Through acquisitions and internal development efforts, we have continued to diversify our product portfolio and introduce next-generation ICsnew products and solutions with added functionality and further integration. On July 1, 2013,In fiscal 2016, we acquired Energy Micro AS. Energy Micro designed and developed energy-efficient 32-bit microcontrollers based on ARM Cortex-M architecture. Energy Micro's energy-friendly solutions are designed to enableMicrium, LLC. Micrium is a broad rangesupplier of power-sensitive applicationsreal-time operating system (RTOS) software for the Internet of Things (IoT), including smart energy, home automation, security and portable electronics markets.IoT. See Note 9,8,Acquisitions, to the Consolidated Financial Statements for additional information.

        In fiscal 2013,2016, we introduced two new wireless occupancy sensor and smart outlet reference designs for the home automation market; new audio software products for the automotive radio market; a newBluetooth software solution that enables developers to efficiently create Apple® HomeKit™-enabled accessories; a mesh networking stack conforming to the Thread 1.1 specification; a small-footprint Bluetooth low energy system-in-package (SiP) module with a built-in chip antenna; a complete sensor-to-cloud Thunderboard kit that simplifies development of cloud-connected devices for the IoT; Wireless Gecko modules focused on mesh networking applications; a major update to our Simplicity Studio software development tools for IoT connected device applications; a CMOS-based family of sub-GHz wireless MCUs optimized for power-sensitive, battery-powered systems with RF connectivity; a high-performance bridge controller for USB connectivity applications; relative humidity (RH) and temperature sensors that simplify RH sensing designs while providing power efficiency and ease of use; the EFM32™ Zero Gecko MCU familyisolated field effect transistor (FET) drivers; isolated gate drivers designed to achieve low system energy consumptionprotect power inverter and motor drive applications; high-speed, multi-channel programmable logic controller (PLC) isolators; a small, low-power USBXpress™ bridge device; multiband Wireless Gecko system-on-chip (SoC) devices enabling both 2.4 GHz and sub-GHz multiprotocol connectivity for the IoT market; a wide range of battery-powered applications; a


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family of universal digital video broadcast (DVB) demodulators that support the latest worldwide DVB standardscomprehensive reference design for cable, terrestrialcables and satellite reception; a low-jitter, low-power and frequency-flexible timing solution for high-speed networking equipmentadapters based on the Synchronous Ethernet (SyncE) standard;USB Type-C™ specification; jitter-attenuating clocks that simplify 100G/400G coherent optical line card and module design; a newfully integrated, pre-certified Bluetooth module for low-energy applications; a family of silicon TV tuners offering high performance, integration and low system cost while supporting all worldwide terrestrial and cable TV standards; highly integrated, feature-rich 8-bit MCUs optimizedisolated gate drivers for cost-sensitive motor controlhigh-speed power supply designs; a plug-and-play Wi-Fi module solution for IoT applications; highly integrated microelectromechanical system (MEMS) oscillators based on our CMEMS (CMOS+MEMS) technology and designed to replace general-purpose crystal oscillators (XOs) in cost-sensitive, low-power and high-volume industrial, embedded and consumer electronics applications; ultra-small and low-power PCI Express (PCIe) clock generators; XOs that meet ultra-low jitter requirements for cloud computing and networking equipment; digital CMOS-based drop-in replacement solutions for opto-drivers; a single-chip digital radio receiver developedthe scalable Blue Gecko wireless SoC family for the global portableBluetooth low-energy market; the Wireless Gecko portfolio of multiprotocol SoC devices for IoT applications; next-generation optical sensors that enable enhanced measurement of ultraviolet (UV) radiation and consumer electronics markets; next-generation analog-tuned, analog/digital-display (ATxD) multiband radio ICs;gesture recognition; and a high-performance, ultra-low-power sub-GHz wireless transceiver optimizedan optical heart rate sensing solution for China's smart metering market.wrist-based heart rate monitoring (HRM) applications. We plan to continue to introduce products that increase the content we provide for existing applications, thereby enabling us to serve markets we do not currently address and expandingexpand our total available market opportunity.

        During fiscal 2013, 20122016 and 2011,2015, we had no end customer that represented more than 10% of our revenues. During fiscal 2014, we had one end customer, Samsung, whose purchases across a variety of product areas represented 15%, 19% and 13%12% of our revenues, respectively.revenues. In addition to direct sales to customers, some of our end customers purchase products indirectly from us through distributors and contract manufacturers. An end customer purchasing through a contract manufacturer typically instructs such contract manufacturer to obtain our products and incorporate such products with other components for sale by such contract manufacturer to the end customer. Although we actually sell the products to, and are paid by, the distributors and contract manufacturers, we refer to such end customer as our customer. TwoThree of our distributors who sell to our customers, Edom Technology, Avnet and Avnet,Arrow Electronics, each represented 21%17%, 13% and 11% of our revenues during fiscal 2013, respectively.2016. Edom and Avnet represented 22%20% and 11%12% of our revenues during fiscal 2012, respectively. Edom, Avnet2015, and Macnica, represented 24%,20% and 12% and 10% of our revenues during fiscal 2011,2014, respectively. There were no other distributors or contract manufacturers that accounted for more than 10% of our revenues in fiscal 2013, 20122016, 2015 or 2011.2014.


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        The percentage of our revenues derived from outside of the United States was 88%86% in fiscal 2013, 88%2016, 85% in fiscal 20122015 and 86% in fiscal 2011. All2014. Substantially all of our revenues to date have been denominated in U.S. dollars. We believe that a majority of our revenues will continue to be derived from customers outside of the United States.

        The sales cycle for our ICs can be as long as 12 months or more. An additional three to six months or more are usually required before a customer ships a significant volume of devices that incorporate our ICs. Due to this lengthy sales cycle, we typically experience a significant delay between incurring research and development and selling, general and administrative expenses, and the corresponding sales. Consequently, if sales in any quarter do not occur when expected, expenses and inventory levels could be disproportionately high, and our operating results for that quarter and, potentially, future quarters would be adversely affected. Moreover, the amount of time between initial research and development and commercialization of a product, if ever, can be substantially longer than the sales cycle for the product. Accordingly, if we incur substantial research and development costs without developing a commercially successful product, our operating results, as well as our growth prospects, could be adversely affected.

        Because many of our ICs are designed for use in consumer products such as televisions, set-top boxes, radios and mobile handsets,wearables, we expect that the demand for our products will be typically subject to some degree of seasonal demand. However, rapid changes in our markets and across our product areas make it difficult for us to accurately estimate the impact of seasonal factors on our business.


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Results of Operations

        The following describes the line items set forth in our Consolidated Statements of Income:

        Revenues.    Revenues are generated almost exclusivelypredominately by sales of our ICs.products. We recognize revenue on sales when all of the following criteria are met: 1) there is persuasive evidence that an arrangement exists, 2) delivery of goods has occurred, 3) the sales price is fixed or determinable, and 4) collectibility is reasonably assured. Generally, we recognize revenue from product sales to direct customers and contract manufacturers upon shipment. Certain of our sales are made to distributors under agreements allowing certain rights of return and price protection on products unsold by distributors. Accordingly, we defer the revenue and cost of revenue on such sales until the distributors sell the product to the end customer. A small portion of our revenues is derived from the sale of patents. The above revenue recognition criteria for patent sales are generally met upon the execution of the patent sale agreement. Our products typically carry a one-year replacement warranty. Replacements have been insignificant to date.

        Our revenues are subject to variation from period to period due to the volume of shipments made within a period, the mix of products we sell and the prices we charge for our products. The vast majority of our revenues were negotiated at prices that reflect a discount from the list prices for our products. These discounts are made for a variety of reasons, including: 1) to establish a relationship with a new customer, 2) as an incentive for customers to purchase products in larger volumes, 3) to provide profit margin to our distributors who resell our products or 4) in response to competition. In addition, as a product matures, we expect that the average selling price for such product will decline due to the greater availability of competing products. Our ability to increase revenues in the future is dependent on increased demand for our established products and our ability to ship larger volumes of those products in response to such demand, as well as our ability to develop or acquire new products and subsequently achieve customer acceptance of newly introduced products.

        Cost of Revenues.    Cost of revenues includes the cost of purchasing finished silicon wafers processed by independent foundries; costs associated with assembly, test and shipping of those products; costs of personnel and equipment associated with manufacturing support, logistics and quality assurance; costs of software royalties, other intellectual property license costs and certain acquired


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intangible assets; and an allocated portion of our occupancy costs. Our gross margin as a percentage of revenue fluctuates depending on product mix, manufacturing yields, inventory valuation adjustments, average selling prices and other factors.

        Research and Development.    Research and development expense consists primarily of personnel-related expenses, including stock-based compensation, as well as new product masks, external consulting and services costs, equipment tooling, equipment depreciation, amortization of intangible assets, and an allocated portion of our occupancy costs. Research and development activities include the design of new products, refinement of existing products and design of test methodologies to ensure compliance with required specifications.

        Selling, General and Administrative.    Selling, general and administrative expense consists primarily of personnel-related expenses, including stock-based compensation, as well as an allocated portion of our occupancy costs, sales commissions to independent sales representatives, applications engineering support, professional fees, legal fees and promotional and marketing expenses.

        Interest Income.    Interest income reflects interest earned on our cash, cash equivalents and investment balances.

        Interest Expense.    Interest expense consists of interest on our short and long-term obligations, including our Credit Facilities.credit facilities.

        Other, Income (Expense), Net.    Other, income (expense), net consists primarily of foreign currency remeasurement adjustments as well as other non-operating income and expenses.

        Provision for Income Taxes.    Provision for income taxes includes both domestic and foreign income taxes at the applicable statutorytax rates adjusted for non-deductible expenses, research and development tax credits and other permanent differences.


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        The following table sets forth our Consolidated Statements of Income data as a percentage of revenues for the periods indicated:


 Fiscal Year  Fiscal Year 

 2013 2012 2011  2016 2015 2014 

Revenues

 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%

Cost of revenues

 39.2 40.0 39.3  39.6 40.9 39.0 
       

Gross margin

 60.8 60.0 60.7  60.4 59.1 61.0 

Operating expenses:

 
 
 
 
 
 
        

Research and development

 27.2 24.5 27.7  28.6 29.2 27.9 

Selling, general and administrative

 22.5 20.3 22.8  22.3 24.9 24.8 
       

Operating expenses

 49.7 44.8 50.5  50.9 54.1 52.7 
       

Operating income

 11.1 15.2 10.2  9.5 5.0 8.3 

Other income (expense):

 
 
 
 
 
 
        

Interest income

 0.2 0.2 0.3  0.2 0.1 0.2 

Interest expense

 (0.6) (0.2) 0.0  (0.4) (0.4) (0.6)

Other income (expense), net

 0.0 0.1 0.1 
       

Other, net

 (0.1) 0.0 0.0 

Income before income taxes

 10.7 15.3 10.6  9.2 4.7 7.9 

Provision for income taxes

 2.1 4.0 3.4  0.4 0.1 1.8 
       

Net income

 8.6% 11.3% 7.2% 8.8% 4.6% 6.1%
       
       

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Comparison of Fiscal 20132016 to Fiscal 20122015

Revenues


 Fiscal Year  
  
  Fiscal Year  
  
 
(in millions)
 2013 2012 Change % Change  2016 2015 Change % Change 

Broad-based

 $281.8 $270.1 $11.7 4.3%

Internet of Things

 $314.6 $262.3 $52.3 19.9%

Broadcast

 199.8 186.1 13.7 7.4% 157.7 161.8 (4.1) (2.5)%

Infrastructure

 147.7 122.0 25.7 21.1%

Access

 98.5 107.1 (8.6) (8.1)% 77.6 98.7 (21.1) (21.4)%
         

Revenues

 $580.1 $563.3 $16.8 3.0% $697.6 $644.8 $52.8 8.2%

        The change in revenues in fiscal 20132016 was due primarily to:

        Unit volumes of our products increased by 14.6% and average selling prices decreased by 6.2% compared to fiscal 2012 by 8.1%. Average selling prices increased compared to the same period by 12.1%.2015. The average selling prices of our products may fluctuate significantly from period to period. In general, as our products become more mature, we expect to experience decreases in average selling prices. We anticipate that newly announced, higher priced, next generation products and product derivatives will offset some of these decreases.


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Gross Margin


 Fiscal Year  
  Fiscal Year  
 
(in millions)
 2013 2012 Change  2016 2015 Change 

Gross margin

 $352.9 $338.0 $14.9  $421.5 $380.8 $40.7 

Percent of revenue

 60.8% 60.0% 0.8% 60.4% 59.1% 1.3%

        The increased dollar amount of gross margin in fiscal 20132016 was due primarily to $14.4 million of increasedincreases in gross margin from higher market demandof $27.9 million for our videoInternet of Things products and timing ICs$21.7 million for our Infrastructure products, offset by decreases in gross margin of $7.1 million for our Access products and $1.8 million for our Broadcast products. Gross margin in fiscal 2016 included $5.0 million from the additionsale of ICspatents, which had no associated cost of revenues. Gross margin in fiscal 2015 included $2.6 million in acquisition-related charges for the fair value write-up associated with inventory acquired from Energy MicroBluegiga and Ember, offset in part by a decline in demand for our touch controller, audio and VoIP ICs.Telegesis.

        We may experience declines in the average selling prices of certain of our products. This creates downward pressure on gross margin as a percentage of revenues and may be offset to the extent we are able to: 1) introduce higher margin new products and gain market share with our ICs;products; 2) reduce costs of existing products through improved design; 3) achieve lower production costs from our wafer suppliers and third-party assembly and test subcontractors; 3)4) achieve lower production costs per unit as a result of improved yields throughout the manufacturing process; or 4)5) reduce logistics costs.


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Research and Development


 Fiscal Year  
  
 

  
 %
Change
  Fiscal Year  
  
 
(in millions)
 2013 2012 Change  2016 2015 Change % Change 

Research and development

 $157.8 $138.0 $19.8 14.4% $199.7 $188.1 $11.6 6.2%

Percent of revenue

 27.2% 24.5%      28.6% 29.2%     

        The increase in research and development expense in fiscal 20132016 was principallyprimarily due to increases of (a) $11.4$5.9 million for personnel-related expenses, including personnel costs associated with (i) increased headcount, and (ii) the acquisition of Energy Micro and Ember, and (b) $4.0$4.4 million for the amortization of intangible assets primarily related to our acquisition of Energy Micro.new product introduction costs. We expect that research and development expense will increase in absolute dollars in the first quarter of 2017.

Selling, General and Administrative

 
 Fiscal Year  
  
 
(in millions)
 2016 2015 Change % Change 

Selling, general and administrative

 $155.5 $160.5 $(5.0) (3.1)%

Percent of revenue

  22.3% 24.9%      

        The decrease in selling, general and administrative expense in fiscal 2016 was primarily due to decreases of (a) $2.1��million for adjustments to the fair value of acquisition-related contingent consideration, (b) $1.3 million for personnel-related expenses, (c) $1.0 million for acquisition-related costs, and (d) $1.0 million for legal fees, primarily related to litigation. We expect that selling, general and administrative expense will remain relatively stable in absolute dollars in the first quarter of 2014.

        Recent development projects include a new family of sub-GHz wireless MCUs optimized for power-sensitive, battery-powered systems with RF connectivity; a high-performance bridge controller for USB connectivity applications; RH and temperature sensors that simplify RH sensing designs while providing power efficiency and ease of use; the EFM32 Zero Gecko MCU family designed to achieve low system energy consumption for a wide range of battery-powered applications; a family of universal DVB demodulators that support the latest worldwide DVB standards for cable, terrestrial and satellite reception; a low-jitter, low-power and frequency-flexible timing solution for high-speed networking equipment based on the SyncE standard; a new family of silicon TV tuners offering high performance, integration and low system cost while supporting all worldwide terrestrial and cable TV standards; highly integrated, feature-rich 8-bit MCUs optimized for cost-sensitive motor control applications; highly integrated MEMS oscillators based on our CMEMS technology and designed to replace general-purpose XOs in cost-sensitive, low-power and high-volume industrial, embedded and consumer electronics applications; ultra-small and low-power PCIe clock generators; XOs that meet ultra-low jitter requirements for cloud computing and networking equipment; digital CMOS-based drop-in replacement solutions for opto-drivers; a single-chip digital radio receiver developed for the global portable and consumer electronics markets; next-generation analog-tuned, analog/digital-display (ATxD) multiband radio ICs; and a high-performance, ultra-low-power sub-GHz wireless transceiver optimized for China's smart metering market.


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Selling, General and Administrative

 
 Fiscal Year  
  
 
 
  
 %
Change
 
(in millions)
 2013 2012 Change 

Selling, general and administrative

 $130.8 $114.4 $16.4  14.3%

Percent of revenue

  22.5% 20.3%      

        The increase in selling, general and administrative expense in fiscal 2013 was principally due to a net gain of $8.5 million in fiscal 2012 from the purchase of our headquarters. Furthermore, the increase in selling, general and administrative expense in fiscal 2013 was also due to increases of (a) $2.5 million for sales commissions, (b) $2.1 million for personnel-related expenses, primarily associated with (i) increased headcount, and (ii) the acquisition of Energy Micro and Ember, and (c) $1.5 million for legal fees, primarily related to litigation and acquisition-related costs. We expect that selling, general and administrative expense will increase in absolute dollars in the first quarter of 2014.2017.

Interest Income

        Interest income in fiscal 20132016 was $0.9$1.3 million compared to $1.3$0.7 million in fiscal 2012.2015.

Interest Expense

        Interest expense in fiscal 20132016 was $3.3$2.6 million compared $1.1$2.8 million in fiscal 2012. The increase in fiscal 2013 was principally due to higher average debt balances in the period on our Term Loan Facility under our Credit Agreement.2015.

Other, Income (Expense), Net

        Other, income (expense), net in fiscal 20132016 was $0.2$(0.5) million compared to $0.5$0.1 million in fiscal 2012.2015.

Provision for Income Taxes


 Fiscal Year  
  
  Fiscal Year  
 
(in millions)
 2013 2012 Change  
  2016 2015 Change 

Provision for income taxes

 $12.2 $22.8 $(10.6)    $3.0 $0.7 $2.3 

Effective tax rate

 19.7% 26.4%      4.7% 2.2%   

        The effective tax rate for fiscal 2013 decreased2016 increased from the prior period,fiscal 2015 primarily due to fiscal 2015 including a net benefit resulting from a change in the prior period tax charge related to the intercompany licenseaccounting treatment of certain technology associated with the acquisition of Ember during 2012 and the recognition of the fiscal 2012 and fiscal 2013 federal research and development tax creditsstock-based compensation in fiscal 2013 as a result of the enactment of the American Taxpayer Relief Act of 2012 (the "Act") on January 2, 2013.cost-sharing arrangement following a U.S. Tax Court case (Altera). The decreaseincrease in the effective tax rate for fiscal 2013 was partially offset by the release duringa reduction in the prior period of unrecognized tax benefits that were determined to be effectively settled during 2012. We expect our effective tax rate for fiscal 2014 to increase primarily duevaluation allowance. See Note 16,Income Taxes, to the expiration of the federal research and development tax credit on December 31, 2013.Consolidated Financial Statements for additional information.

        The effective tax rates for each of the periods presented differ from the federal statutory rate of 35% due to the amount of income earned in foreign jurisdictions where the tax rate may be lower than the federal statutory rate research and development tax credits and other permanent items including changes to the liability for unrecognizednondeductible compensation expenses and research and development tax benefits.credits.


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Comparison of Fiscal 20122015 to Fiscal 20112014

Revenues


 Fiscal Year  
  
  Fiscal Year  
  
 

  
 %
Change
   
 %
Change
 
(in millions)
 2012 2011 Change  2015 2014 Change 

Broad-based

 $270.1 $208.7 $61.4 29.4%

Internet of Things

 $262.3 $209.0 $53.3 25.5%

Broadcast

 186.1 169.5 16.6 9.7% 161.8 204.3 (42.5) (20.8)%

Infrastructure

 122.0 108.1 13.9 12.8%

Access

 107.1 113.4 (6.3) (5.5)% 98.7 99.3 (0.6) (0.6)%
         

Revenues

 $563.3 $491.6 $71.7 14.6% $644.8 $620.7 $24.1 3.9%

        The change in revenues in fiscal 20122015 was due primarily to:

        Unit volumes of our products increased by 3.4% and average selling prices increased by 1.7% compared to fiscal 2011 by 18.0%. Average selling prices decreased compared to the same period by 3.0%.2014.

Gross Margin


 Fiscal Year  
  
  Fiscal Year  
 
(in millions)
 2012 2011 Change  
  2015 2014 Change 

Gross margin

 $338.0 $298.4 $39.6    $380.8 $378.6 $2.2 

Percent of revenue

 60.0% 60.7% (0.7)%    59.1% 61.0% (1.9)%

        The increased dollar amount of gross margin in fiscal 20122015 was due primarily to $51.3 million of increasedincreases in gross margin from higher market demandof $18.8 million for our videoInternet of Things products, $8.1 million for our Infrastructure products and microcontroller ICs and the introduction$0.6 million for our Access products, offset by a decrease in gross margin of $25.3 million for our touch controller ICs, offsetBroadcast products. Gross margin in part by an increasefiscal 2015 included $2.6 million in acquisition-related charges.charges for the fair value write-up associated with inventory acquired from Bluegiga and Telegesis. Gross margin as a percentagein fiscal 2014 included $7.1 million from the sale of revenue decreased 0.5 percent due primarily to the increased sales of video ICs,patents, which had a lower gross margin percentage than the Company average.no associated cost of revenues.

Research and Development


 Fiscal Year  
  
  Fiscal Year  
  
 

  
 %
Change
   
 %
Change
 
(in millions)
 2012 2011 Change  2015 2014 Change 

Research and development

 $138.0 $136.0 $2.0 1.5% $188.1 $173.0 $15.1 8.7%

Percent of revenue

 24.5% 27.7%      29.2% 27.9%     

        The increase in research and development expense in fiscal 20122015 was principallyprimarily due to an increaseincreases of $2.8(a) $9.7 million for personnel-related expenses, including personnel costs associated with increased headcount, and (b) $6.7 million for the acquisitionamortization of Ember. The decrease in research and development expense as a percent of revenues in fiscal 2012 is due to our increased revenues.intangible assets.


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Selling, General and Administrative


 Fiscal Year  
  
  Fiscal Year  
  
 

  
 %
Change
   
 %
Change
 
(in millions)
 2012 2011 Change  2015 2014 Change 

Selling, general and administrative

 $114.4 $112.4 $2.0 1.8% $160.5 $154.1 $6.4 4.1%

Percent of revenue

 20.3% 22.8%      24.9% 24.8%     

        The increase in selling, general and administrative expense in fiscal 20122015 was principallyprimarily due to increases of (a) $6.5$10.8 million for personnel-related expenses, including severance related to a separation agreement between uscosts associated with increased headcount, (b) $1.9 million for the amortization of intangible assets, (c) $1.6 million for acquisition-related costs, and our former CEO, (b) $1.5(d) $1.0 million for product marketing costs. The increase in selling, general and administrative expense was offset in part by decreases of (a) $6.3 million for legal fees, primarily related to litigation, and acquisition-related costs, and (c) $0.8(b) $5.2 million for product marketing costs. The increase in fiscal 2012 was offset in part by a net gainadjustments to the fair value of $8.5 million from the purchase of our headquarters in fiscal 2012. The decrease in selling, general and administrative expense as a percent of revenues in fiscal 2012 is due to our increased revenues.acquisition-related contingent consideration.

Interest Income

        Interest income in fiscal 20122015 was $1.3$0.7 million compared to $1.9$1.0 million in fiscal 2011.2014.

Interest Expense

        Interest expense in fiscal 20122015 was $1.1$2.8 million compared $3.2 million in fiscal 2014.

Other, Net

        Other, net in fiscal 2015 was $0.1 million compared to $37 thousand in fiscal 2011. The increase in fiscal 2012 is principally due to interest on our Term Loan Facility under our Credit Agreement.

Other Income (Expense), Net

        Other income (expense), net in fiscal 2012 was $0.5 million compared to $0.4$(0.2) million in fiscal 2011.2014.

Provision for Income Taxes


 Fiscal Year  
  
  Fiscal Year  
 
(in millions)
 2012 2011 Change  
  2015 2014 Change 

Provision for income taxes

 $22.8 $16.9 $5.9    $0.7 $11.0 $(10.3)

Effective tax rate

 26.4% 32.2%      2.2% 22.5%   

        The effective tax rate for fiscal 20122015 decreased from fiscal 2011,2014, primarily due to the releasecompletion of payments related to a prior year unrecognizedintercompany licensing arrangement resulting in an increase to the foreign tax benefits that were determinedrate benefit as well as the recognition of a net benefit resulting from a change in the tax accounting treatment of stock-based compensation in a cost-sharing arrangement following a U.S. Tax Court case (Altera). See Note 16,Income Taxes, to be effectively settled during fiscal 2012, along with one-time nondeductible costs associated with the acquisitionConsolidated Financial Statements for additional information.

        The decrease in the effective tax rate from the completion of Spectra Linear in fiscal 2011. The impactpayments related to a prior year intercompany licensing arrangement and the recognition of these itemsa net benefit from the Altera case, was partially offset by the non-renewal of the federal research and development tax credit in fiscal 2012.

        The American Taxpayer Relief Act of 2012 (the "Act") was enacted on January 2, 2013. The Act retroactively reinstates the federal research and development credit from January 1, 2012, through December 31, 2013. The effect of the changean increase in the tax lawprior year valuation allowance related to fiscal 2012 was recognized as a benefit to incomelower expectations of profitability in jurisdictions where tax expense in the first quarter of fiscal 2013, the quarter in which the law was enacted.attributes exist.

        The effective tax rates for each of the periods presented differ from the federal statutory rate of 35% due to the amount of income earned in foreign jurisdictions where the tax rate may be lower than the federal statutory rate research and development tax credits and other permanent items including changes to the liability for unrecognizednondeductible compensation expenses and research and development tax benefits.


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Business Outlook

        We expect revenues in the first quarter of fiscal 20142017 to be in the range of $142$174 to $146$179 million. Furthermore, we expect our diluted earnings per share to be in the range of $0.14$0.21 to $0.18.$0.27.


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Liquidity and Capital Resources

        Our principal sources of liquidity as of December 28, 201331, 2016 consisted of $275.4$295.1 million in cash, cash equivalents and short-term investments, of which approximately $185.7$193.8 million was held by our U.S. entities. The remaining balance was held by our foreign subsidiaries. Our cash equivalents and short-term investments consisted of municipal bonds, money market funds, corporate bonds, variable-rate demand notes, corporateU.S. government bonds, asset-back securities, certificates of deposit, commercial paper and asset backed securities.

international government bonds. Our long-term investments consisted of auction-rate securities. In fiscal 2008, auctions for many of our auction-rate securities failed because sell orders exceeded buy orders. As of December 28, 2013,31, 2016, we held $12.4$6.0 million par value auction-rate securities, all of which have experienced failed auctions. These securities have contractual maturity dates ranging from 2033 to 2046. We are receiving the underlying cash flows on allauctions because sell orders exceeded buy orders. See Note 4,Fair Value of our auction-rate securities. The principal amounts associated with failed auctions are not expected to be accessible until a successful auction occurs, the issuer redeems the security, a buyer is found outside of the auction process or the underlying securities mature. We are unable to predict if these funds will become available before their maturity dates. We do not expect to need accessFinancial Instruments, to the capital represented by any of our auction-rate securities prior to their maturities.Consolidated Financial Statements for additional information.

Operating Activities

        Net cash provided by operating activities was $120.2$128.9 million during fiscal 2013,2016, compared to net cash provided of $97.1$105.4 million during fiscal 2012.2015. Operating cash flows during fiscal 20132016 reflect our net income of $49.8$61.5 million, adjustments of $62.7$74.8 million for depreciation, amortization, stock-based compensation and deferred income taxes, and a net cash inflowoutflow of $7.7$7.4 million due to changes in our operating assets and liabilities.

        Net cash provided by operating activities was $105.4 million during fiscal 2015, compared to net cash provided of $137.4 million during fiscal 2014. Operating cash flows during fiscal 2015 reflect our net income of $29.6 million, adjustments of $80.2 million for depreciation, amortization, stock-based compensation and deferred income taxes, and a net cash outflow of $4.4 million due to changes in our operating assets and liabilities.

        Accounts receivable decreasedincreased to $72.1$74.4 million at December 28, 201331, 2016 from $78.0$73.6 million at January 2, 2016. The increase in accounts receivable resulted primarily from normal variations in the timing of collections and billings. Our average DSO was 37 days at December 31, 2016 and 41 days at January 2, 2016.

        Inventory increased to $59.6 million at December 29, 2012. Our average days sales outstanding (DSO) was 44 days at December 28, 2013 and 46 days at December 29, 2012.

        Inventory decreased to $45.331, 2016 from $53.9 million at December 28, 2013 from $49.6 million at December 29, 2012.January 2, 2016. Our inventory level is primarily impacted by our need to make purchase commitments to support forecasted demand and variations between forecasted and actual demand. Our average days of inventory (DOI)DOI was 7173 days at December 28, 201331, 2016 and 76 days at December 29, 2012.January 2, 2016.

Investing Activities

        Net cash used in investing activities was $105.9$49.6 million during fiscal 2013,2016, compared to net cash used of $139.3$49.3 million during fiscal 2012.2015. The decreaseincrease in cash outflows was principally due to an increase of $87.8 million in net purchases of marketable securities and an increase of $2.4 million for the purchase of other assets, offset by a decrease of $91.6$89.6 million in net payments for the acquisition of businesses. See Note 8,Acquisitions, to the Consolidated Financial Statements for additional information.

        Net cash used in investing activities was $49.3 million during fiscal 2015, compared to net cash used of $26.3 million during fiscal 2014. The increase in cash outflows was principally due to $96.1 million in net payments for the acquisition of businesses, including $76.1 million for purchasesthe purchase of propertyBluegiga and equipment,Telegesis and $20.0 million for consideration previously withheld in connection with our purchase of Energy Micro, offset by an increase of $46.1$74.0 million forfrom net purchasesproceeds from the sales and maturities of marketable securities. In fiscal 2013, we acquired Energy Micro for approximately $140.6 million. In fiscal 2012, we purchased our corporate headquarters facilities for approximately $94.4 million and acquired Ember for approximately $79.0 million. See Note 9,Acquisitions, for additional information.

        We anticipate capital expenditures of approximately $10$18 to $14$22 million for fiscal 2014.2017. Additionally, as part of our growth strategy, we expect to evaluate opportunities to invest in or acquire other


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businesses, intellectual property or technologies that would complement or expand our current offerings, expand the breadth of our markets or enhance our technical capabilities.

Financing Activities

        Net cash used in financing activities was $23.9$52.3 million during fiscal 2013,2016, compared to net cash providedused of $52.7$83.8 million during fiscal 2012.2015. The decrease in cash outflows was principally due to a decrease of $89.7 million in payments on debt and a decrease of $30.9 million for repurchases of our common stock, offset by $81.2 million in net proceeds from the issuance of long-term debt during fiscal 2015 and an increase of $5.0 million for payments of acquisition-related contingent consideration. In July 2015, we amended our Credit Agreement. In August 2015, the Board of Directors authorized a program to repurchase up to $100 million of our common stock through December 2016. In January 2017, the Board of Directors authorized a program to repurchase up to $100 million of our common stock through December 2017.

        Net cash used in financing activities was $83.8 million during fiscal 2015, compared to net cash used of $65.2 million during fiscal 2014. The increase in cash outflows was principally due to an increase of $87.2 million in payments on debt and a decrease of $10.2 million from proceeds from the issuance of common stock, net of cash paid for withheld taxes, offset by net proceeds of $98.3$81.2 million from the issuance of long-term debt in fiscal 2012, offset by a decline of $36.0 million for repurchases of our common stock in fiscal 2013. In January 2013, our Board of


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Directors authorized a program to repurchase up to $50 million of our common stock through January 2014.debt.

Debt

        On July 31, 2012, we entered into a $230 million five-year Credit Agreement (the "Agreement""Credit Agreement"). The Agreement consists, which consisted of a $100 million Term Loan Facility and a $130 million Revolving Credit Facility.

        TheFacility (collectively, the "Credit Facilities"). On July 24, 2015, we amended the Credit Agreement (the "Amended Credit Agreement") in order to, among other things, increase the borrowing capacity under the Revolving Credit Facility to $300 million, eliminate the Term Loan Facility provides for quarterly principal amortization (equaland extend the maturity date to 5% offive years from the principal in each ofclosing date. On July 24, 2015, we borrowed $82.5 million under the first two yearsAmended Credit Agreement and 10% of the principal in each of the next three years) withpaid off the remaining balance payable upon the maturity date.of our Term Loan Facility.

        The RevolvingAmended Credit FacilityAgreement includes a $25 million letter of credit sublimit and a $10 million swingline loan sublimit. We also have an option to increase the size of the Revolving Credit Facilityborrowing capacity by up to an aggregate of $50$200 million in additional commitments, subject to certain conditions. On September 27, 2012, we borrowed $100 million under the Term Loan Facility. To date, we have not borrowed under the Revolving Credit Facility.

        The Term Loan Facility and Revolving Credit Facility, other than swingline loans, will bear interest at LIBOR plus an applicable margin or, at our option, a base rate (defined as the highest of the Bank of America prime rate, the Federal Funds rate plus 0.50% and a daily rate equal to one-month LIBOR plus 1.00%) plus an applicable margin. Swingline loans accrue interest at a per annum rate based on the base rate plus the applicable margin for base rate loans. The applicable margins for the LIBOR rate loans range from 1.50% to 2.50% and for base rate loans range from 0.50% to 1.50%, depending in each case, on the leverage ratio as defined in the Agreement. We also pay a commitment fee on the unused amount of the Revolving Credit Facility.

        In connection with the closing of the Credit Agreement, we entered into a security and pledge agreement. Under the security and pledge agreement, we pledged equity securities of certain of our subsidiaries, subject to exceptions and limitations. The Credit Facilities contain various conditions, covenants and representations with which we must be in compliance in order to borrow funds and to avoid an event of default, including financial covenants that we must maintain a leverage ratio (funded debt/EBITDA) of no more than 2.5 to 1 and a minimum fixed charge coverage ratio (EBITDA/debt payments, income taxes and capital expenditures) of no less than 1.50 to 1. As of December 28, 2013, the Company was in compliance with all covenants of the Credit Facilities. See Note 11,10,Debt, to the Consolidated Financial Statements for additional information.

        We have entered into an interest rate swap agreement as a hedge against the LIBOR portion of the variable interest payments under the Term Loan Facility and effectively converted the LIBOR portion of the interest on the Term Loan Facility to a fixed interest rate through the maturity date. See Note 5,Derivative Financial Instruments, to the Consolidated Financial Statements for additional information.

        Our future capital requirements will depend on many factors, including the rate of sales growth, market acceptance of our products, the timing and extent of research and development projects, potential acquisitions of companies or technologies and the expansion of our sales and marketing activities. We believe our existing cash, cash equivalents, investments and credit under our Credit Facilities are sufficient to meet our capital requirements through at least the next 12 months, although we could be required, or could elect, to seek additional funding prior to that time. We may enter into acquisitions or strategic arrangements in the future which also could require us to seek additional equity or debt financing.


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Contractual Obligations

        The following table summarizes our contractual obligations as of December 28, 201331, 2016 (in thousands):


 Payments due by period  Payments due by period 

 Total 2014 2015 2016 2017 2018 Thereafter  Total 2017 2018 2019 2020 2021 Thereafter 

Long-term debt obligations (1)

 $95,000 $7,500 $10,000 $10,000 $67,500 $ $  $72,500 $ $ $ $72,500 $ $ 

Interest on long-term debt obligations (2)

 8,934 3,008 2,496 2,241 1,189    $7,873 $2,201 $2,219 $2,207 $1,246 $ $ 

Operating lease obligations (3)

 15,475 4,232 3,704 3,058 2,350 1,449 682  $21,047 $5,139 $3,852 $2,700 $2,432 $2,286 $4,638 

Purchase obligations (4)

 31,650 31,650       $44,613 $44,613 $ $ $ $ $ 

Other long-term obligations (5)

 33,194  23,158 4,392 2,273 1,969 1,402  $15,108 $ $4,976 $5,468 $4,664 $ $ 

(1)
Long-term debt obligations represent the principal due under our Term Loan Facility and include amounts classified as current portion of long-term debt.our Credit Facilities.

(2)
Interest on our long-term debt obligations is based on LIBORthe Eurodollar Base Rate plus an applicable margin. We have entered into an interest rate swap agreement as a hedge against the LIBOREurodollar portion of such variable interest payments and effectively converted the LIBOREurodollar portion of the interest on the Term Loan FacilityCredit Facilities to a fixed interest rate through the maturity date.July 2020. As of December 28, 2013,31, 2016, the combined interest rate on the Term Loan FacilityCredit Facilities and the interest rate swap was 2.514%2.375%. The impact of the interest rate swap was factored into the calculation of the future interest payments on our long-term debt obligations.obligations through July 2020.

(3)
Operating lease obligations include amounts for leased facilities.

(4)
Purchase obligations include contractual arrangements in the form of purchase orders with suppliers where there is a fixed non-cancelable payment schedule or minimum payments due with a reduced delivery schedule.

(5)
Other long-term obligations primarily represent estimated payments due in connection with the acquisition of Energy Micro, including escrow withheld and estimated contingent consideration.software license obligations.

We are unable to make a reasonably reliable estimate as to when or if cash settlement with taxing authorities will occur for our unrecognized tax benefits. Therefore, our liability of $5.0$3.1 million for unrecognized tax benefits is not included in the table above. See Note 17,16,Income Taxes, to the Consolidated Financial Statements for additional information.

Off-Balance Sheet Arrangements

        As of December 28, 2013,31, 2016, we had no significant off-balance sheet arrangements.

Critical Accounting Policies and Estimates

        The preparation of financial statements and accompanying notes in conformity with U.S. generally accepted accounting principles requires that we make estimates and assumptions that affect the amounts reported. Changes in facts and circumstances could have a significant impact on the resulting estimated amounts included in the financial statements. We believe the following critical accounting policies affect our more complex judgments and estimates. We also have other policies that we consider to be key accounting policies, such as our policies for revenue recognition, including the deferral of revenues and cost of revenues on sales to distributors; however, these policies do not meet the definition of critical accounting estimates because they do not generally require us to make estimates or judgments that are difficult or subjective.


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        Inventory valuation—We assess the recoverability of inventories through the application of a set of methods, assumptions and estimates. In determining net realizable value, we write down inventory that


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may be slow moving or have some form of obsolescence, including inventory that has aged more than 12 months. We also adjust the valuation of inventory when its manufacturing cost exceeds the estimated market value less selling costs. We assess the potential for any unusual customer returns based on known quality or business issues and write-off inventory losses for scrap or non-saleable material. Inventory not otherwise identified to be written down is compared to an assessment of our 12-month forecasted demand. The result of this methodology is compared against the product life cycle and competitive situations in the marketplace to determine the appropriateness of the resulting inventory levels. Demand for our products may fluctuate significantly over time, and actual demand and market conditions may be more or less favorable than those that we project. In the event that actual demand is lower or market conditions are worse than originally projected, additional inventory write-downs may be required.

        Stock-based compensation—We recognize the fair-value of stock-based compensation transactions in the Consolidated Statements of Income. The fair value of our full-value stock awards (with the exception of market-based performance awards) equals the fair market value of our stock on the date of grant. The fair value of our market-based performance award grantsawards is estimated at the date of grant using a Monte-Carlo simulation. The fair value of our stock option and employee stock purchase plan grants is estimated at the date of grant using the Black-Scholes option pricing model. In addition, we are required to estimate the expected forfeiture rate of our stock grants and only recognize the expense for those shares expected to vest. If our actual experience differs significantly from the assumptions used to compute our stock-based compensation cost, or if different assumptions had been used, we may have recorded too much or too little stock-based compensation cost. See Note 13,12,Stock-Based Compensation, to the Consolidated Financial Statements for additional information.

        Investments in auction-rate securities—We determine the fair value of our investments in auction-rate securities using a discounted cash flow model. The assumptions used in preparing the discounted cash flow model include estimates for interest rates, amount of cash flows, expected holding periods of the securities and a discount to reflect our inability to liquidate the securities. For available-for-sale auction-rate securities, if the calculated value is below the carrying amount of the securities, we then determine if the decline in value is other-than-temporary. We consider various factors in determining whether an impairment is other-than-temporary, including the severity and duration of the impairment, changes in underlying credit ratings, forecasted recovery, our intent to sell or the likelihood that we would be required to sell the investment before its anticipated recovery in market value and the probability that the scheduled cash payments will continue to be made. When we conclude that an other-than-temporary impairment has occurred, we assess whether we intend to sell the security or if it is more likely than not that we will be required to sell the security before recovery. If either of these two conditions is met, we recognize a charge in earnings equal to the entire difference between the security's amortized cost basis and its fair value. If we do not intend to sell a security and it is not more likely than not that we will be required to sell the security before recovery, the unrealized loss is separated into an amount representing the credit loss, which is recognized in earnings, and the amount related to all other factors, which is recorded in accumulated other comprehensive loss.income (loss).

        Acquired intangible assets—When we acquire a business, a portion of the purchase price is typically allocated to identifiable intangible assets, such as acquired technology and customer relationships. Fair value of these assets is determined primarily using the income approach, which requires us to project future cash flows and apply an appropriate discount rate. We amortize intangible assets with finite lives over their expected useful lives. Our estimates are based upon assumptions believed to be reasonable but which are inherently uncertain and unpredictable. Assumptions may be incomplete or inaccurate,


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and unanticipated events and circumstances may occur. Incorrect estimates could result in future impairment charges, and those charges could be material to our results of operations.


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        Impairment of goodwill and other long-lived assets—We review long-lived assets which are held and used, including fixed assets and purchased intangible assets, for impairment whenever changes in circumstances indicate that the carrying amount of the assets may not be recoverable. Such evaluations compare the carrying amount of an asset to future undiscounted net cash flows expected to be generated by the asset over its expected useful life and are significantly impacted by estimates of future prices and volumes for our products, capital needs, economic trends and other factors which are inherently difficult to forecast. If the asset is considered to be impaired, we record an impairment charge equal to the amount by which the carrying value of the asset exceeds its fair value determined by either a quoted market price, if any, or a value determined by utilizing a discounted cash flow technique.

        We test our goodwill for impairment annually as of the first day of our fourth fiscal quarter and in interim periods if certain events occur indicating that the carrying value of goodwill may be impaired. The goodwill impairment test is a two-step process. The first step of the impairment analysis compares our fair value to our net book value. In determining fair value, the accounting guidance allows for the use of several valuation methodologies, although it states quoted market prices are the best evidence of fair value. If the fair value is less than the net book value, the second step of the analysis compares the implied fair value of our goodwill to its carrying amount. If the carrying amount of goodwill exceeds its implied fair value, we recognize an impairment loss equal to that excess amount.

        Income taxes—We are required to calculate income taxes in each of the jurisdictions in which we operate. This process involves calculating the actual current tax liability together with assessing temporary differences in recognition of income (loss) for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included in our Consolidated Balance Sheet. We record a valuation allowance when it is more likely than not that some portion or all of the deferred tax assets will not be realized. In assessing the need for a valuation allowance, we are required to estimate the amount of expected future taxable income. Judgment is inherent in this process and differences between the estimated and actual taxable income could result in a material impact on our Consolidated Financial Statements.

        We recognize liabilities for uncertain tax positions based on a two-step process. The first step requires us to determine ifwhether the weight of available evidence indicates that the tax position has met the threshold for recognition; therefore,recognition. Therefore, we must evaluate whether it is more likely than not that the position will be sustained on audit, including resolution of any related appeals or litigation processes. The second step requires us to measure the tax benefit of the tax position taken, or expected to be taken, in an income tax return as the largest amount that is more than 50% likely of being realized upon ultimate settlement. This measurement step is inherently complex and requires subjective estimations of such amounts to determine the probability of various possible outcomes. We re-evaluate the uncertain tax positions each quarter based on factors including, but not limited to, changes in facts or circumstances, changes in tax law, expirations of statutes of limitation, effectively settled issues under audit, and new audit activity. Such a change in recognition or measurement would result in the recognition of a tax benefit or an additional charge to the tax provision in the period.

        Although we believe the measurement of our liabilities for uncertain tax positions is reasonable, no assurance can be given that the final outcome of these matters will not be different than what is reflected in the historical income tax provisions and accruals. If additional taxes are assessed as a result of an audit or litigation, it could have a material effect on our income tax provision and net income in the period or periods for which that determination is made. We operate within multiple taxing jurisdictions and are subject to audit in these jurisdictions. These audits can involve complex issues


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which may require an extended period of time to resolve and could result in additional assessments of income tax. We believe adequate provisions for income taxes have been made for all periods.


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Recent Accounting Pronouncements

        In February 2013,January 2017, the Financial Accounting Standards Board (FASB) issued FASB Accounting Standards Update (ASU) No. 2013-02,2017-01Comprehensive Income, Business Combinations (Topic 220)—Reporting805): Clarifying the Definition of Amounts Reclassified Out of Accumulated Other Comprehensive Incomea Business.. This ASU 2013-02clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This ASU is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. We are currently evaluating the effect that the adoption of this ASU will have on our financial statements.

        In August 2016, the FASB issued ASU No. 2016-16,Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. This ASU requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the facerecognition of the financial statements or inincome tax consequences of an intra-entity transfer of an asset other than inventory when the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income, but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts.transfer occurs. This ASU 2013-02 is effective prospectively for annual reporting periods beginning after December 15, 2012.2017, including interim reporting periods within those annual reporting periods, with early adoption permitted. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. We have elected to early adopt this ASU on January 1, 2017. We currently expect to record a cumulative-effect adjustment to decrease retained earnings by between $0.0 and $2.5 million with a corresponding adjustment to non-current assets and deferred taxes on the Consolidated Balance Sheet.

        In August 2016, the FASB issued ASU No. 2016-15,Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU provides guidance on statement of cash flows presentation for eight specific cash flow issues where diversity in practice exists. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. We are currently evaluating the effect that the adoption of this ASU didwill have on our financial statements.

        In June 2016, the FASB issued ASU No. 2016-13,Financial Instruments—Credit Losses (Topic 326: Measurement of Credit Losses on Financial Instruments. This ASU requires instruments measured at amortized cost to be presented at the net amount expected to be collected. Entities are also required to record allowances for available-for-sale debt securities rather than reduce the carrying amount. This ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. We are currently evaluating the effect that the adoption of this ASU will have on our financial statements.

        In March 2016, the FASB issued ASU No. 2016-09,Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the statement of cash flows. This ASU is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. We expect the primary impact of this ASU to be the income tax effects of awards recognized in the income statement when the awards are vested or settled.

        In February 2016, the FASB issued ASU No. 2016-02,Leases (Topic 842). The core principle of Topic 842 is that a lessee should recognize the assets and liabilities that arise from leases. For operating leases, a lessee is required to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in the statement of financial position. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. We are currently evaluating the effect that the adoption of this ASU will have on our financial statements.

        In January 2016, the FASB issued ASU No. 2016-01,Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This ASU addresses certain aspects of recognition, measurement, presentation and disclosure of financial


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instruments. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. We are currently evaluating the effect that the adoption of this ASU will have on our financial statements.

        In July 2015, the FASB issued ASU No. 2015-11,Inventory (Topic 330): Simplifying the Measurement of Inventory. This ASU requires inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This ASU is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. We do not expect that the adoption of this ASU will have ana material impact on our financial statements, but did amendstatements.

        In May 2014, the disclosuresFASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605,Revenue Recognition. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for accumulated other comprehensive loss.those goods or services. The guidance provides a five-step process to achieve that core principle. In August 2015, the FASB issued ASU No. 2015-14,Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. In 2016, the FASB issued the following amendments to ASC 606: ASU No. 2016-08,Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which clarifies the implementation guidance on principal versus agent considerations; ASU No. 2016-10,Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which clarifies guidance on identification of performance obligations and licensing implementation; ASU No. 2016-12,Compensation—Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, which provides clarifying guidance on assessing collectibility, presentation of sales taxes, noncash consideration, contract modifications and completed contracts; and ASU No. 2016-20,Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, which clarifies narrow aspects of ASC 606 or corrects unintended application of the guidance. The standard may be applied retrospectively to each prior period presented (full retrospective method) or retrospectively with the cumulative effect recognized as of the date of initial application (modified retrospective method). Under the new standard, we expect the timing of revenue recognition from sales to distributors to be accelerated. We will recognize revenue at the time of sale to the distributor, net of the impact of estimated price adjustments and rights of return. We currently anticipate adopting this standard using the modified retrospective method. We are continuing to evaluate the effect that the adoption will have on our financial statements.

Item 7A.    Quantitative and Qualitative Disclosures about Market Risk

Interest Income

        Our investment portfolio includes cash, cash equivalents, short-term investments and long-term investments. Our main investment objectives are the preservation of investment capital and the maximization of after-tax returns on our investment portfolio. Our interest income is sensitive to changes in the general level of U.S. interest rates. Our investment portfolio holdings as of December 28, 201331, 2016 and December 29, 2012January 2, 2016 yielded less than 100 basis points. A decline in yield to zero basis points on our investment portfolio holdings as of December 28, 201331, 2016 and December 29, 2012January 2, 2016 would decrease our future annual interest income by approximately $0.9$1.9 million and $1.2$0.9 million, respectively. We believe that our investment policy, which defines the duration, concentration, and minimum credit quality of the allowable investments, meets our investment objectives.


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Interest Expense

        We are exposed to interest rate fluctuations in the normal course of our business, including through our Credit Facilities. The interest payments on the facility are calculated usingCredit Facilities consist of a variable-rate of interest.interest and an applicable margin. We have entered into an interest rate swap agreement with an original notional value of $100$72.5 million (equal to the full amount borrowed under the Term Loan Facility) and,that, effectively, converted the variable-rate interest payments on the Term Loan Facility to fixed-rate interest payments through July 2017.2020.

Foreign currency exchange rate risk

        We are exposed to foreign currency exchange rate risk primarily through assets and liabilities of our subsidiaries denominated in currencies other than the U.S. dollar. Our foreign subsidiaries are considered to be extensions of the U.S. parent. The functional currency of the foreign subsidiaries is the U.S. dollar. Accordingly, gains and losses resulting from remeasuring transactions denominated in currencies other than U.S. dollars are recorded in other, net in the Consolidated Statements of Income. We use foreign currency forward contracts to manage exposure to foreign exchange risk. Gains and losses on foreign currency forward contracts are recognized in earnings in the same period as the remeasurement loss and gain of the related foreign currency denominated asset or liability.

Investments in Auction-rate Securities

        In fiscal 2008, auctions for many of our auction-rate securities failed because sell orders exceeded buy orders. As of December 28, 2013,31, 2016, we held $12.4$6.0 million par value auction-rate securities, all of which have experienced failed auctions. The principal amounts associated with failed auctions are not expected to be accessible until a successful auction occurs, the issuer redeems the securities, a buyer is found outside of the auction process or the underlying securities mature.because sell orders exceeded buy orders. We are unable to predict if these funds will become available before their maturity dates. Additionally, if we determine that an other-than-temporary decline in the fair value of any of our available-for-sale auction-rate securities has occurred, we may be required to adjust the carrying value of the investments through an impairment charge.


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Item 8.    Financial Statements and Supplementary Data

        The Financial Statements and supplementary data required by this item are included in Part IV, Item 15 of this Form 10-K and are presented beginning on page F-1.

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

        None.

Item 9A.    Controls and Procedures

        We have performed an evaluation under the supervision and with the participation of our management, including our Chief Executive Officer (CEO) and Chief Financial Officer (CFO), of the effectiveness of our disclosure controls and procedures, as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934 (the Exchange Act). Based on that evaluation, our management, including our CEO and CFO, concluded that our disclosure controls and procedures were effective as of December 28, 201331, 2016 to provide reasonable assurance that information required to be disclosed by us in the reports filed or submitted by us under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms. Such disclosure controls and procedures include controls and procedures designed to ensure that information required to be disclosed is accumulated and communicated to our management, including our CEO and CFO, to allow timely decisions regarding required disclosures. There was no change in our internal controls during the fiscal quarter ended December 28, 201331, 2016 that materially affected, or is reasonably likely to materially affect, our internal controls over financial reporting.


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Management's Report on Internal Control over Financial Reporting

        Our management is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control system was designed to provide reasonable assurance to our management and Board of Directors regarding the preparation and fair presentation of published financial statements.

        Our management assessed the effectiveness of our internal control over financial reporting as of December 28, 2013.31, 2016. In making this assessment, it used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) inInternal Control—Integrated Framework (2013 framework). Based on our assessment we concluded that, as of December 28, 2013,31, 2016, our internal control over financial reporting is effective based on those criteria.

        Our independent registered public accounting firm, Ernst & Young LLP, issued an attestation report on our internal control over financial reporting. This report appears on page F-1.

Item 9B.    Other Information

        None.


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Part III

        Certain information required by Part III is omitted from this report because we intend to file a definitive Proxy Statement pursuant to Regulation 14A (the "Proxy Statement") no later than 120 days after the end of the fiscal year covered by this report, and certain information to be included therein is incorporated herein by reference.

Item 10.    Directors, Executive Officers and Corporate Governance

        Set forth below is information regarding the executive officers and directors of Silicon Laboratories as of January 21, 2014.

Name
AgePosition
Navdeep S. Sooch51Chairman of the Board
G. Tyson Tuttle46Chief Executive Officer and Director
William G. Bock63President and Director
John C. Hollister44Chief Financial Officer and Senior Vice President
Kurt W. Hoff56Senior Vice President of Worldwide Sales
Jonathan D. Ivester58Senior Vice President of Strategic Operations
David R. Welland58Vice President and Director
Alf-Egil Bogen47Director
Harvey B. Cash75Director
R. Ted Enloe III75Director
Jack R. Lazar48Director
Laurence G. Walker65Director
William P. Wood58Director

        Navdeep S. Sooch co-founded Silicon Laboratories in August 1996 and has served as Chairman of the Board since our inception. Mr. Sooch served as our Chief Executive Officer from our inception through the end of fiscal 2003 and served as interim Chief Executive Officer from April 2005 to September 2005. From March 1985 until founding Silicon Laboratories, Mr. Sooch held various positions at Crystal Semiconductor/Cirrus Logic, a designer and manufacturer of integrated circuits, including Vice President of Engineering, as well as Product Planning Manager of Strategic Marketing and Design Engineer. From May 1982 to March 1985, Mr. Sooch was a Design Engineer with AT&T Bell Labs. Since October 2011, Mr. Sooch has served as the CEO of Ketra, Inc., a private company in the field of solid state lighting. Mr. Sooch holds a B.S. in Electrical Engineering from the University of Michigan, Dearborn and an M.S. in Electrical Engineering from Stanford University. Mr. Sooch's prior experience as our Chief Executive Officer as well as a semiconductor designer provides him with extensive insight into our industry and our operations and qualifies him to serve as Chairman of our Board of Directors.

        G. Tyson Tuttle has served as a director and our Chief Executive Officer since April 2012. Mr. Tuttle served as our Chief Executive Officer and President from April 2012 to May 2013. Mr. Tuttle served as our Chief Operating Officer and Senior Vice President from May 2011 to April 2012. From January 2010 to May 2011, Mr. Tuttle served as our Chief Technical Officer. From May 2005 to December 2009, he was our Vice President and General Manager of Broadcast products including the audio and video product families. Mr. Tuttle joined Silicon Laboratories in 1997 as a senior design engineer. From 1999 to 2005, Mr. Tuttle served in a variety of product management, marketing and business leadership positions. Previously, Mr. Tuttle held senior design engineering positions at Crystal Semiconductor/Cirrus Logic and Broadcom Corporation where he focused on high-speed mixed-signal circuit design for hard disk drive read channel and Ethernet applications. Mr. Tuttle holds an M.S. in Electrical Engineering from UCLA and a B.S. in Electrical Engineering from Johns Hopkins University. Mr. Tuttle's intimate knowledge of our company and the industry and his service as our Chief Executive Officer qualify him to serve as a member of our Board of Directors.


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        William G. Bock has served as our President since June 2013. He served Silicon Laboratories as Interim Chief Financial Officer and Senior Vice President from February 2013 until June 2013. He served as Chief Financial Officer from November 2006 to July 2011 and Senior Vice President of Finance and Administration from July 2011 through December 2011. He joined Silicon Laboratories as a director in March 2000, and served as Chairman of the audit committee until November 2006 when he stepped down from the Board of Directors to assume the CFO role. Mr. Bock rejoined Silicon Laboratories' Board of Directors in July of 2011. From 2001 to 2006, Mr. Bock participated in the venture capital industry, principally as a partner with CenterPoint Ventures. Before his venture career, Mr. Bock held senior executive positions with three venture-backed companies, Dazel Corporation, Tivoli Systems and Convex Computer Corporation. Mr. Bock began his career with Texas Instruments. Mr. Bock has served on the Board of Directors of Convio, Inc., from January 2008 until its sale to Blackbaud Inc. in April 2012. Mr. Bock currently serves on the Board of Directors of Entropic Communications and as a member of the Audit Committee. Mr. Bock holds a B.S. in Computer Science from Iowa State University and an M.S. in Industrial Administration from Carnegie Mellon University. Mr. Bock's extensive financial and executive experience and his in-depth knowledge of Silicon Laboratories qualify him to serve as a member of our Board of Directors.

        John C. Hollister has served Silicon Laboratories as our Chief Financial Officer since June 2013. Prior to this role, Mr. Hollister was our Vice President, Business Development since April 2012, and also served as our Chief Information Officer since November 2012. Mr. Hollister served as our Vice President, Manufacturing and Asia Operations from November 2009 to April 2012. From April 2007 to October 2009, he was Managing Director, Asia Operations. Mr. Hollister joined Silicon Laboratories in 2004 and held finance management positions until April 2007. Prior to joining Silicon Laboratories, Mr. Hollister's experience included Vice President of Finance at Cicada Semiconductor as well as various finance positions at Cirrus Logic, Veritas DGC, 3-D Geophysical and PricewaterhouseCoopers LLP. Mr. Hollister is a Certified Public Accountant and has a master's degree in Accounting and a bachelor's degree in Business Administration from the University of Texas at Austin.

        Kurt W. Hoff has served as our Senior Vice President of Worldwide Sales since April 2012. He previously served as our Vice President of Worldwide Sales from July 2007 to April 2012. From 2005 until July 2007, he managed the company's European sales and operations. Prior to joining Silicon Laboratories in 2005, Mr. Hoff served as president, Chief Executive Officer and director of Cognio. Mr. Hoff also managed the operations and sales of C-Port Corporation, a network processor company acquired by Motorola in May 2000. Additionally, Mr. Hoff spent 10 years in various sales positions at AMD. Mr. Hoff holds a B.S. in Physics from the University of Illinois and an M.B.A. from the University of Chicago.

        Jonathan D. Ivester has served as our Senior Vice President of Strategic Operations since July 2013. He previously served as Senior Vice President of Worldwide Operations from June 2008 to July 2013 and as Vice President of Worldwide Operations from May 2005 to June 2008. He joined Silicon Laboratories in September 1997 as Vice President. Previously, Mr. Ivester was with Applied Materials, a supplier of equipment and services to the semiconductor industry, and served as Director of Manufacturing and Director of U.S. Procurement in addition to various engineering and manufacturing management positions. Mr. Ivester also was a scientist at Bechtel Corporation, an engineering and construction company, and at Abcor, Inc., an ultrafiltration company and subsidiary of Koch Industries. Mr. Ivester holds a B.S. in Chemistry from the Massachusetts Institute of Technology and an M.B.A. from Stanford University.

        David R. Welland co-founded Silicon Laboratories in August 1996, has served as a Vice President and director since our inception and was appointed Fellow in March 2004. From November 1991 until founding Silicon Laboratories, Mr. Welland held various positions at Crystal Semiconductor/Cirrus Logic, a designer and manufacturer of integrated circuits, including Senior Design Engineer. Mr. Welland holds a B.S. in Electrical Engineering from the Massachusetts Institute of Technology.


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Mr. Welland's years of experience as a semiconductor designer provide him with extensive insight into our operations and qualifies him to serve as a member of our Board of Directors.

        Alf-Egil Bogen has served as a director of Silicon Laboratories since October 2013. Mr. Bogen is a 20-year semiconductor veteran and one of the inventors of the highly successful AVR microcontroller. He is currently the chief executive officer and a member of the Board of Directors of Novelda AS, a privately held semiconductor company based in Norway specializing in nanoscale wireless low-power technology for ultra-high-resolution impulse radar. Prior to Novelda, he was chief marketing officer of Energy Micro AS until it was acquired by Silicon Laboratories in July 2013. Mr. Bogen also held various management positions during his 17 years at Atmel Corporation, including managing director of the AVR business unit as well as vice president of corporate marketing and chief marketing officer. He began his career at Nordic VLSI in Norway. Mr. Bogen holds an M.S. in Electrical Engineering and Computer Science from Norwegian University of Science and Technology and a B.S. in Electrical and Computing Engineering from Trondheim University College. Mr. Bogen's combination of independence and his experience, including past experience in the semiconductor industry, qualifies him to serve as a member of our Board of Directors.

        Harvey B. Cash has served as a director of Silicon Laboratories since June 1997. Mr. Cash has served as general partner of InterWest Partners, a venture capital firm, since 1986. Mr. Cash currently serves on the Board of Directors of the following public companies: Ciena Corporation, a designer and manufacturer of dense wavelength division multiplexing systems for fiber optic networks; Argo Group International Holdings, Ltd., a specialty insurance company; and First Acceptance Corp, a provider of low-cost auto insurance. Mr. Cash holds a B.S. in Electrical Engineering from Texas A&M University and an M.B.A. from Western Michigan University. Mr. Cash's independence and experience as a director of various public companies, as well as his prior operational experience as an executive, qualifies him to serve as a member of our Board of Directors.

        R. Ted Enloe III has served as a director of Silicon Laboratories since April 2003. Mr. Enloe is currently the Managing General Partner of Balquita Partners, Ltd., a family investment firm. Mr. Enloe formerly served as Vice Chairman and member of the office of chief executive of Compaq Computer Corporation. He also served as President of Lomas Financial Corporation and Liberté Investors for more than 15 years. Mr. Enloe co-founded a number of other publicly held firms, including Capstead Mortgage Corp., Tyler Cabot Mortgage Securities Corp., and Seaman's Corp. Mr. Enloe currently serves on the Board of Directors of Leggett & Platt, Inc. and Live Nation, Inc. Mr. Enloe holds a B.S. in Engineering from Louisiana Polytechnic University and a J.D. from Southern Methodist University. Mr. Enloe's combination of independence, qualification as an audit committee financial expert and his experience, including past experience as an executive officer and current and past experience as a director of various public companies, qualifies him to serve as a member of our Board of Directors.

        Jack R. Lazar has served as a director of Silicon Laboratories since April 2013. Mr. Lazar is currently the Chief Financial Officer of GoPro, a leading provider of wearable and mountable camera products. From January 2013 to January 2014, he was an independent business and financial consultant. Mr. Lazar previously served as Senior Vice President, Corporate Development and General Manager of Qualcomm Atheros from May 2011 to January 2013. From September 2003 until the acquisition of Atheros by Qualcomm in May 2011, Mr. Lazar served as Chief Financial Officer and Secretary of Atheros Communications, Inc., a publicly traded provider of communications semiconductor solutions. Mr. Lazar also served Atheros as Vice President of Corporate Development from February 2008 and Senior Vice President of Corporate Development from November 2010 until the acquisition by Qualcomm. From May 2002 to September 2003, Mr. Lazar was an independent business and financial consultant. From August 1999 to May 2002, Mr. Lazar served in a variety of positions at NetRatings, Inc., a publicly traded Internet audience measurement and analysis company, most recently as Executive Vice President of Corporate Development, Chief Financial Officer and Secretary. Previously, Mr. Lazar held a variety of executive and management positions at Apptitude, Electronics


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for Imaging and Price Waterhouse. Mr. Lazar currently serves on the Board of Directors of TubeMogul, a private brand focused video marketing company. Mr. Lazar is a Certified Public Accountant and holds a B.S. in Commerce with an emphasis in Accounting from Santa Clara University. Mr. Lazar's combination of independence and his experience, including past experience as an executive officer, qualifies him to serve as a member of our Board of Directors.

        Laurence G. Walker has served as a director of Silicon Laboratories since June 2003. Previously, Mr. Walker co-founded and served as Chief Executive Officer of C-Port Corporation, a pioneer in the network processor industry, which was acquired by Motorola in 2000. Following the acquisition, Mr. Walker served as Vice President of Strategy for Motorola's Network and Computing Systems Group and then as Vice President and General Manager of the Network and Computing Systems Group until 2002. From August 1996 to May 1997, Mr. Walker served as Chief Executive Officer of CertCo, a digital certification supplier. Mr. Walker served as Vice President and General Manager, Network Products Business Unit, of Digital Equipment Corporation, a computer hardware company, from January 1994 to July 1996. From 1998 to 2007, he served on the Board of Directors of McData Corporation, a provider of storage networking solutions. From 1981 to 1994, he held a variety of other management positions at Digital Equipment Corporation. Mr. Walker holds a B.S. in Electrical Engineering from Princeton University and an M.S. and Ph.D. in Electrical Engineering from the Massachusetts Institute of Technology. Mr. Walker's combination of independence and his experience, including past experience as an executive officer, qualifies him to serve as a member of our Board of Directors.

        William P. Wood has served as a director of Silicon Laboratories since March 1997 and as Lead Director since December 2005. Since 1996, Mr. Wood has also served as general partner of various funds associated with Silverton Partners, a venture capital firm. From 1984 to 2003, Mr. Wood was a general partner, and for certain funds created since 1996, a special limited partner, of various funds associated with Austin Ventures, a venture capital firm. Mr. Wood holds a B.A. in History from Brown University and an M.B.A. from Harvard University. Mr. Wood's combination of independence and his experience, including past experience as an investor in numerous semiconductor and technology companies, qualifies him to serve as a member of our Board of Directors.

The remaining information required by this Item is incorporated by reference to the Proxy Statement under the sections captioned "Proposal One: Election of Directors," "Executive Compensation," "Section 16(a) Beneficial Ownership Reporting Compliance" and "Code of Ethics."

Item 11.    Executive Compensation

        The information under the caption "Executive Compensation" and "Proposal One: Election of Directors" appearing in the Proxy Statement, is incorporated herein by reference.

Item 12.    Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

        The information under the caption "Ownership of Securities" and "Equity Compensation Plan Information" appearing in the Proxy Statement is incorporated herein by reference.

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

        The information under the caption "Certain Relationships and Related Transactions, and Director Independence" appearing in the Proxy Statement is incorporated herein by reference.

Item 14.    Principal Accounting Fees and Services

        The information under the caption "Proposal Two: Ratification of Appointment of Independent Registered Public Accounting Firm" appearing in the Proxy Statement is incorporated herein by reference.


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Part IV

Item 15.    Exhibits and Financial Statement Schedules

(a)
1.    Financial Statements


Index

 
 Page

Report of independent registered public accounting firm

 F-1

Report of independent registered public accounting firm

 
F-2

Consolidated Balance Sheets at December 28, 201331, 2016 and December 29, 2012January 2, 2016

 
F-3

Consolidated Statements of Income for the fiscal years ended December 28, 2013, December 29, 201231, 2016, January 2, 2016 and December 31, 2011January 3, 2015

 
F-4

Consolidated Statements of Comprehensive Income for the fiscal years ended December 28, 2013, December 29, 201231, 2016, January 2, 2016 and December 31, 2011January 3, 2015

 
F-5

Consolidated Statements of Changes in Stockholders' Equity for the fiscal years ended December 28, 2013, December 29, 201231, 2016, January 2, 2016 and December 31, 2011January 3, 2015

 
F-6

Consolidated Statements of Cash Flows for the fiscal years ended December 28, 2013, December 29, 201231, 2016, January 2, 2016 and December 31, 2011January 3, 2015

 
F-7

Notes to Consolidated Financial Statements

 
F-8

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(b)
Exhibits

Exhibit
Number
 
 2.1*ShareSale and Purchase Agreement dated June 6, 2013,January 30, 2015, by and between Silicon Laboratories International Pte. Ltd. and Energy ASthe holders of shares, options and Silicon Laboratories Inc.capital loans in Bluegiga Technologies Oy (filed as Exhibit 2.1 to the Form 8-K filed on June 7, 2013)February 4, 2015).
2.2*Agreement dated November 20, 2015, by and between the shareholders of Telegesis (UK) Limited and Silicon Laboratories UK Limited (filed as Exhibit 2.1 to the Form 8-K filed on November 23, 2015).
     
 3.1*Form of Fourth Amended and Restated Certificate of Incorporation of Silicon Laboratories Inc. (filed as Exhibit 3.1 to the Registrant's Registration Statement on Form S-1 (Securities and Exchange Commission File No. 333-94853) (the "IPO Registration Statement")).
     
 3.2*SecondFourth Amended and Restated Bylaws of Silicon Laboratories Inc. (filed as Exhibit 3.2 to the Registrant's AnnualCurrent Report on Form 10-K for the fiscal year ended8-K filed on January 3, 2004)27, 2017).
     
 4.1*Specimen certificate for shares of common stock (filed as Exhibit 4.1 to the IPO Registration Statement).
     
 10.1*+Form of Indemnification Agreement between Silicon Laboratories Inc. and each of its directors and executive officers (filed as Exhibit 10.1 to the IPO Registration Statement).
     
 10.2*+Silicon Laboratories Inc. 2000 Stock Incentive Plan (filed as Exhibit 99.1 to the Registrant's Registration Statement on Form S-8 (Securities and Exchange Commission File No. 333-60794) filed on May 11, 2001).
10.3*+Form of Stock Option Agreement and Notice of Grant of Stock Option under Registrant's 2000 Stock Incentive Plan (filed as Exhibit 10.3 to the Registrant's Annual Report on Form 10-K for the year ended January 1, 2005).
10.4*+Form of Addendum to Stock Option Agreement under Registrant's 2000 Stock Incentive Plan (filed as Exhibit 10.4 to the Registrant's Annual Report on Form 10-K for the year ended January 1, 2005).
10.5*+Form of Stock Issuance Agreement under Registrant's 2000 Stock Incentive Plan (filed as Exhibit 10.5 to the Registrant's Annual Report on Form 10-K for the year ended January 1, 2005).
10.6*+Form of Addendum to Stock Issuance Agreement under Registrant's 2000 Stock Incentive Plan (filed as Exhibit 10.6 to the Registrant's Annual Report on Form 10-K for the year ended January 1, 2005).
10.7*Sale and Purchase Agreement dated February 8, 2007 by and between NXP B.V., NXP Semiconductors France SAS, Silicon Laboratories Inc. and Silicon Laboratories International Pte. Ltd. (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on February 9, 2007).
10.8*Intellectual Property License Agreement dated as of March 23, 2007, by and among Silicon Laboratories Inc., Silicon Laboratories International Pte. Ltd., NXP B.V. and NXP Semiconductors France SAS (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on March 29, 2007).
10.9*+Silicon Laboratories Inc. 2009 Stock Incentive Plan (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on April 27, 2009).
10.10*+Silicon Laboratories Inc. 2009 Employee Stock Purchase Plan (filed as Exhibit 10.2 to the Registrant's Current Report on Form 8-K filed on April 27, 2009).

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Exhibit
Number
10.11*+Form of Restricted Stock Units Grant Notice and Restricted Stock Units Award Agreement under Registrant's 2009 Stock Incentive Plan (filed as Exhibit 10.3 to the Registrant's Current Report on Form 8-K filed on April 27, 2009).
10.12*+Form of Stock Option Grant Notice and Stock Option Award Agreement under Registrant's 2009 Stock Incentive Plan (filed as Exhibit 10.4 to the Registrant's Current Report on Form 8-K filed on April 27, 2009).
10.13*Credit Agreement, dated July 31, 2012, by and among Silicon Laboratories Inc., the subsidiaries of the borrower identified therein, Bank of America, N.A., Wells Fargo Bank, National Association, and Regions Bank (filed as Exhibit 10.1 to the Form 8-K filed August 1, 2012).
     
 10.1410.3*First Amendment to Credit Agreement, dated July 24, 2015, by and among Silicon Laboratories Inc., the subsidiaries of the borrower identified therein, Wells Fargo Bank, National Association, Citibank, N.A., Regions Bank, Bank of America, N.A. and the lenders party thereto (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on July 29, 2015).
10.4*Security and Pledge Agreement, dated July 31, 2012, by and among Silicon Laboratories Inc., with the other parties identified as "Obligors" (as defined therein) and such other parties that may become Obligors thereunder after the date thereof, and Bank of America, N.A (filed as Exhibit 10.2 to the Form 8-K filed August 1, 2012).
     
 10.1510.5*+Silicon Laboratories Inc. 2009 Stock Incentive Plan, as amended and restated on April 15, 2014 (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on April 16, 2014).
10.6*+Silicon Laboratories Inc. 2009 Employee Stock Purchase Plan, as amended and restated on April 15, 2014 (filed as Exhibit 10.2 to the Registrant's Current Report on Form 8-K filed on April 16, 2014).
10.7+Form of Restricted Stock Units Grant Notice and Global Restricted Stock Units Award Agreement under Registrant's 2009 Stock Incentive Plan, as amended and restated.
10.8+Form of Market Stock Units Grant Notice and Global Market Stock Units Award Agreement under Registrant's 2009 Stock Incentive Plan, as amended and restated.
10.9+Form of Stock Option Grant Notice and Global Stock Option Award Agreement under Registrant's 2009 Stock Incentive Plan, as amended and restated.

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Exhibit
Number
10.10+Form of Performance Stock Units Grant Notice and Global PSU Award Agreement under Registrant's 2009 Stock Incentive Plan, as amended and restated.
10.11*+Silicon Laboratories Inc. 2017 Bonus Plan (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on January 24, 2014)26, 2017).
10.12*+Silicon Laboratories Inc. Form of Change in Control Agreement (filed as Exhibit 10.1 to the Registrant's Current Report on Form 8-K filed on October 25, 2016).
     
 21 Subsidiaries of the Registrant.
     
 23.1 Consent of Independent Registered Public Accounting Firm.
     
 24 Power of Attorney (included on signature page to this Form 10-K).
     
 31.1 Certification of the Principal Executive Officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002.
     
 31.2 Certification of the Principal Financial Officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002.
     
 32.1 Certification as required by Section 906 of the Sarbanes-Oxley Act of 2002.
     
 101.INS XBRL Instance Document
     
 101.SCH XBRL Taxonomy Extension Schema Document
     
 101.CAL XBRL Taxonomy Extension Calculation Linkbase Document

 

101.LAB

 

101.LABXBRL Taxonomy Extension Label Linkbase Document

 

101.PRE

 

101.PREXBRL Taxonomy Extension Presentation Linkbase Document

 

101.DEF

 

101.DEFXBRL Taxonomy Extension Definition Linkbase Document

*
Incorporated herein by reference to the indicated filing.

+
Management contract or compensatory plan or arrangement

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SCHEDULE II

SILICON LABORATORIES INC.
VALUATION AND QUALIFYING ACCOUNTS

 
  
 Additions  
  
 
Valuation Allowance for
Deferred Tax Assets
 Balance at
Beginning of
Period
 Charged to
Expenses
 Charged to
Goodwill
 Deductions (1) Balance at
End of Period
 
 
  
  
 (in thousands)
  
  
 

Year ended December 28, 2013

 $2,114 $2,335 $ $(674)$3,775 

Year ended December 29, 2012

 $ $ $2,114 $ $2,114 

(1)
Represents adjustments to deferred tax assets
Valuation Allowance for
Deferred Tax Assets
 Balance at
Beginning of
Period
 Additions
Charged to
Expenses
 Deductions Balance at
End of Period
 
 
  
 (in thousands)
  
 

Year ended December 31, 2016

 $10,264 $2,715 $(618)$12,361 

Year ended January 2, 2016

 $3,455 $6,895 $(86)$10,264 

Year ended January 3, 2015

 $3,775 $ $(320)$3,455 

Table of Contents


SIGNATURES

        Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, in Austin, Texas, on January 31, 2014.February 1, 2017.

 SILICON LABORATORIES INC.

 

By:

 

/s/ G. TYSON TUTTLE


G. Tyson Tuttle
President and Chief Executive Officer


POWER OF ATTORNEY

        KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints G. Tyson Tuttle and John C. Hollister and each of them, acting individually, as his or her attorney-in-fact, each with full power of substitution and resubstitution, for him or her and in his or her name, place and stead, in any and all capacities, to sign any and all amendments to this annual report on Form 10-K and other documents in connection herewith and therewith, and to file the same, with all exhibits thereto, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection herewith and therewith and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or any of them, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

        Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated:

Name
 
Title
 
Date

 

 

 

 

 
/s/ NAVDEEP S. SOOCH

Navdeep S. Sooch
 Chairman of the Board January 31, 2014February 1, 2017

/s/ G. TYSON TUTTLE

G. Tyson Tuttle

 

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

 

January 31, 2014

/s/ WILLIAM G. BOCK

William G. Bock


President and Director


January 31, 2014February 1, 2017

/s/ JOHN C. HOLLISTER

John C. Hollister

 

Senior Vice President and Chief Financial Officer (Principal Financial Officer and Principal Accounting Officer)

 

January 31, 2014February 1, 2017

/s/ WILLIAM G. BOCK

William G. Bock


Director


February 1, 2017

Table of Contents

Name
 
Title
 
Date

 

 

 

 

 
/s/ DAVID R. WELLANDNEIL KIM

David R. WellandNeil Kim
 Vice President and Director January 31, 2014

/s/ ALF-EGIL BOGEN

Alf-Egil Bogen


Director


January 31, 2014

/s/ HARVEY B. CASH

Harvey B. Cash


Director


January 31, 2014

/s/ ROBERT TED ENLOE, III

Robert Ted Enloe, III


Director


January 31, 2014February 1, 2017

/s/ JACK R. LAZAR

Jack R. Lazar

 

Director

 

January 31, 2014February 1, 2017

/s/ LAURENCE G. WALKERNINA RICHARDSON

Laurence G. WalkerNina Richardson

 

Director

 

January 31, 2014February 1, 2017

/s/ SUMIT SADANA

Sumit Sadana


Director


February 1, 2017

/s/ WILLIAM P. WOOD

William P. Wood

 

Director

 

January 31, 2014February 1, 2017

Table of Contents


Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Silicon Laboratories Inc.

        We have audited Silicon Laboratories Inc.'s (the Company) internal control over financial reporting as of December 28, 2013,31, 2016, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (1992(2013 framework) (the COSO criteria). Silicon Laboratories Inc.'s management is responsible for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company'scompany's internal control over financial reporting based on our audit.

        We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

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

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

        In our opinion, Silicon Laboratories Inc. maintained, in all material respects, effective internal control over financial reporting as of December 28, 2013,31, 2016, based on the COSO criteria.

        We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of Silicon Laboratories Inc. as of December 28, 201331, 2016 and December 29, 2012,January 2, 2016, and the related consolidated statements of income, comprehensive income, changes in stockholders' equity and cash flows for each of the three fiscal years in the period ended December 28, 201331, 2016 of Silicon Laboratories Inc. and our report dated January 31, 2014February 1, 2017 expressed an unqualified opinion thereon.

  /s/ ERNST & YOUNG LLP

Austin, Texas
January 31, 2014February 1, 2017


Table of Contents


Report of Independent Registered Public Accounting Firm

The Board of Directors and Stockholders of Silicon Laboratories Inc.

        We have audited the accompanying consolidated balance sheets of Silicon Laboratories Inc. (the Company) as of December 28, 201331, 2016 and December 29, 2012,January 2, 2016, and the related consolidated statements of income, comprehensive income, changes in stockholders' equity and cash flows for each of the three fiscal years in the period ended December 28, 2013.31, 2016. Our audits also included the financial statement schedule listed in the Index at Item 15(a). These financial statements and schedule are the responsibility of the Company's management. Our responsibility is to express an opinion on these financial statements and schedule based on our audits.

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

        In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Silicon Laboratories Inc. at December 28, 201331, 2016 and December 29, 2012,January 2, 2016, and the consolidated results of its operations and its cash flows for each of the three fiscal years in the period ended December 28, 2013,31, 2016, in conformity with U.S. generally accepted accounting principles. Also, in our opinion, the related financial statement schedule, when considered in relation to the basic financial statements taken as a whole, presentspresent fairly in all material respects the information set forth therein.

        We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), Silicon Laboratories Inc.'s internal control over financial reporting as of December 28, 2013,31, 2016, based on criteria established in Internal Control—IntegratedControl-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (1992(2013 framework) and our report dated January 31, 2014February 1, 2017 expressed an unqualified opinion thereon.

  /s/ ERNST & YOUNG LLP

Austin, Texas
January 31, 2014February 1, 2017


Table of Contents


Silicon Laboratories Inc.
Consolidated Balance Sheets
(In thousands, except per share data)


 December 28,
2013
 December 29,
2012
  December 31,
2016
 January 2,
2016
 

Assets

          

Current assets:

 
 
 
 
      

Cash and cash equivalents

 $95,800 $105,426  $141,106 $114,085 

Short-term investments

 179,593 176,565  153,961 128,901 

Accounts receivable, net of allowances for doubtful accounts of $797 at December 28, 2013 and $670 at December 29, 2012

 72,124 78,023 

Accounts receivable, net

 74,401 73,601 

Inventories

 45,271 49,579  59,578 53,895 

Deferred income taxes

 18,878 16,652 

Prepaid expenses and other current assets

 47,651 41,437  61,805 52,658 
     

Total current assets

 459,317 467,682  490,851 423,140 

Long-term investments

 10,632 11,369  5,196 7,126 

Property and equipment, net

 132,445 135,271  129,559 131,132 

Goodwill

 228,781 130,265  276,130 272,722 

Other intangible assets, net

 131,593 90,750  103,565 121,354 

Other assets, net

 28,382 36,629  76,543 55,989 
     

Total assets

 $991,150 $871,966  $1,081,844 $1,011,463 
     
     

Liabilities and Stockholders' Equity

          

Current liabilities:

 
 
 
 
      

Accounts payable

 $22,126 $29,622  $39,577 $42,127 

Current portion of long-term debt

 7,500 5,000   10,000 

Accrued expenses

 45,975 40,410  50,100 52,131 

Deferred income on shipments to distributors

 30,853 30,259  45,568 35,448 

Income taxes

 2,693 1,087  4,450 2,615 
     

Total current liabilities

 109,147 106,378  139,695 142,321 

Long-term debt

 87,500 95,000  72,500 67,500 

Other non-current liabilities

 55,941 20,615  42,691 40,528 
     

Total liabilities

 252,588 221,993  254,886 250,349 

Commitments and contingencies

          

Stockholders' equity:

          

Preferred stock—$0.0001 par value; 10,000 shares authorized; no shares issued and outstanding

      

Common stock—$0.0001 par value; 250,000 shares authorized; 42,779 and 41,879 shares issued and outstanding at December 28, 2013 and December 29, 2012, respectively

 4 4 

Common stock—$0.0001 par value; 250,000 shares authorized; 41,889 and 41,727 shares issued and outstanding at December 31, 2016 and January 2, 2016, respectively

 4 4 

Additional paid-in capital

 48,630 10,122  24,463 13,868 

Retained earnings

 690,612 640,793  801,999 747,749 

Accumulated other comprehensive loss

 (684) (946)
     

Accumulated other comprehensive income (loss)

 492 (507)

Total stockholders' equity

 738,562 649,973  826,958 761,114 
     

Total liabilities and stockholders' equity

 $991,150 $871,966  $1,081,844 $1,011,463 
     
     

   

The accompanying notes are an integral part of these Consolidated Financial Statements.


Table of Contents


Silicon Laboratories Inc.
Consolidated Statements of Income
(In thousands, except per share data)


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Revenues

 $580,087 $563,294 $491,625  $697,626 $644,826 $620,704 

Cost of revenues

 227,183 225,277 193,179  276,122 264,056 242,153 
       

Gross margin

 352,904 338,017 298,446  421,504 380,770 378,551 

Operating expenses:

              

Research and development

 157,799 137,952 135,953  199,744 188,050 172,985 

Selling, general and administrative

 130,795 114,390 112,419  155,483 160,486 154,145 
       

Operating expenses

 288,594 252,342 248,372  355,227 348,536 327,130 
       

Operating income

 64,310 85,675 50,074  66,277 32,234 51,421 

Other income (expense):

              

Interest income

 853 1,338 1,859  1,291 730 1,007 

Interest expense

 (3,293) (1,149) (37) (2,587) (2,828) (3,154)

Other income (expense), net

 157 484 444 
       

Other, net

 (485) 127 (234)

Income before income taxes

 62,027 86,348 52,340  64,496 30,263 49,040 

Provision for income taxes

 12,208 22,800 16,868  3,002 677 11,019 
       

Net income

 $49,819 $63,548 $35,472  $61,494 $29,586 $38,021 
       
       

Earnings per share:

              

Basic

 $1.17 $1.51 $0.82  $1.47 $0.70 $0.88 

Diluted

 $1.14 $1.47 $0.79  $1.45 $0.69 $0.87 

Weighted-average common shares outstanding:

 
 
 
 
 
 
  
 
 
 
 
 
 

Basic

 42,715 42,136 43,421  41,713 42,309 42,970 

Diluted

 43,537 43,106 44,832  42,376 42,945 43,793 

   

The accompanying notes are an integral part of these Consolidated Financial Statements.


Table of Contents


Silicon Laboratories Inc.
Consolidated Statements of Comprehensive Income
(In thousands)


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Net income

 $49,819 $63,548 $35,472  $61,494 $29,586 $38,021 

Other comprehensive income, before tax:

 
 
 
 
 
 
 

Other comprehensive income (loss), before tax:

 
 
 
 
 
 
 

Net changes to available-for-sale securities:

              

Unrealized gains (losses) arising during the period

 (535) 1,000 4  (179) (425) 1,107 

Reclassification for gains included in net income

 (232)   

Reclassification for losses included in net income

  10  

Net changes to cash flow hedges:

 
 
 
 
 
 
  
 
 
 
 
 
 

Unrealized gains (losses) arising during the period

 611 (956) (424) 1,466 (728) (799)

Reclassification for losses included in net income

 560 2,295 2,237  249 489 618 
       

Other comprehensive income, before tax

 
404
 
2,339
 
1,817
 

Provision for income taxes

 
142
 
818
 
636
 
       

Other comprehensive income (loss), before tax

 1,536 (654) 926 

Provision (benefit) for income taxes

 
537
 
(229

)
 
324
 

Other comprehensive income

 262 1,521 1,181 
       

Other comprehensive income (loss)

 
999
 
(425

)
 
602
 

Comprehensive income

 
$

50,081
 
$

65,069
 
$

36,653
  
$

62,493
 
$

29,161
 
$

38,623
 
       
       

   

The accompanying notes are an integral part of these Consolidated Financial Statements.


Table of Contents


Silicon Laboratories Inc.
Consolidated Statements of Changes in Stockholders' Equity
(In thousands)


 Common Stock  
  
  
  Common Stock  
  
  
 

  
 Accumulated
Other
Comprehensive
Loss
  
   
 Accumulated
Other
Comprehensive
Income (Loss)
  
 

 Number
of Shares
 Par
Value
 Additional
Paid-In
Capital
 Retained
Earnings
 Total
Stockholders'
Equity
  Number
of Shares
 Par
Value
 Additional
Paid-In
Capital
 Retained
Earnings
 Total
Stockholders'
Equity
 

Balance as of January 1, 2011

 43,933 $4 $49,947 $579,127 $(3,648)$625,430 

Balance as of December 28, 2013

 42,779 $4 $48,630 $690,612 $(684)$738,562 

Net income

    35,472  35,472  
 
 
 
38,021
 
 
38,021
 

Other comprehensive income

     1,181 1,181 

Stock issuances under employee plans, net of shares withheld for taxes

 1,290  7,660   7,660 

Income tax benefit (detriment) from employee stock-based awards

   2,707   2,707 

Other comprehensive income (loss)

     602 602 

Stock issuances, net of shares withheld for taxes

 1,124  13,320   13,320 

Income tax benefit (shortfall) from stock-based awards

   120   120 

Repurchases of common stock

 (3,155)  (82,117) (27,946)  (110,063) (1,678)  (71,676)   (71,676)

Stock-based compensation

   36,552   36,552    39,107   39,107 
             

Balance as of December 31, 2011

 42,068 4 14,749 586,653 (2,467) 598,939 

Balance as of January 3, 2015

 42,225 4 29,501 728,633 (82) 758,056 

Net income

 
 
 
 
63,548
 
 
63,548
  
 
 
 
29,586
 
 
29,586
 

Other comprehensive income

     1,521 1,521 

Stock issuances under employee plans, net of shares withheld for taxes

 1,560  15,148   15,148 

Income tax benefit (detriment) from employee stock-based awards

   1,675   1,675 

Other comprehensive income (loss)

     (425) (425)

Stock issuances, net of shares withheld for taxes

 1,152  3,128   3,128 

Income tax benefit (shortfall) from stock-based awards

   (613)   (613)

Repurchases of common stock

 (1,749)  (52,611) (9,408)  (62,019) (1,650)  (60,978) (10,470)  (71,448)

Stock-based compensation

   31,161   31,161    42,830   42,830 
             

Balance as of December 29, 2012

 41,879 4 10,122 640,793 (946) 649,973 

Balance as of January 2, 2016

 41,727 4 13,868 747,749 (507) 761,114 

Net income

 
 
 
 
49,819
 
 
49,819
  
 
 
 
61,494
 
 
61,494
 

Other comprehensive income

     262 262 

Stock issuances under employee plans, net of shares withheld for taxes

 1,057  15,301   15,301 

Income tax benefit (detriment) from employee stock-based awards

   (772)   (772)

Other comprehensive income (loss)

     999 999 

Stock issuances, net of shares withheld for taxes

 1,055  6,346   6,346 

Income tax benefit (shortfall) from stock-based awards

   (2,061)   (2,061)

Repurchases of common stock

 (661)  (26,022)   (26,022) (893)  (33,299) (7,244)  (40,543)

Stock-based compensation

   30,753   30,753    39,609   39,609 

Stock issued in business combination

 504  19,248   19,248 
             

Balance as of December 28, 2013

 42,779 $4 $48,630 $690,612 $(684)$738,562 
             

Balance as of December 31, 2016

 41,889 $4 $24,463 $801,999 $492 $826,958 
             

   

The accompanying notes are an integral part of these Consolidated Financial Statements.


Table of Contents


Silicon Laboratories Inc.
Consolidated Statements of Cash Flows
(In thousands)


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Operating Activities

              

Net income

 $49,819 $63,548 $35,472  $61,494 $29,586 $38,021 

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

              

Depreciation of property and equipment

 13,491 13,621 13,570  13,216 12,517 12,561 

Net gain on the purchase of property and equipment

  (8,457)  

Amortization of other intangible assets and other assets

 15,911 14,154 11,030  27,715 29,131 17,923 

Impairment of long-lived assets

  708 1,322 

Stock-based compensation expense

 30,800 31,176 36,115  39,628 42,791 39,067 

Income tax benefit (detriment) from employee stock-based awards

 (606) 1,827 2,814 

Excess income tax benefit from employee stock-based awards

 (290) (1,294) (2,404)

Income tax benefit (shortfall) from stock-based awards

 (1,099) 469 489 

Excess income tax benefit from stock-based awards

 (572) (2,497) (632)

Deferred income taxes

 3,319 4,725 (445) (4,087) (2,136) 3,054 

Changes in operating assets and liabilities:

              

Accounts receivable

 8,972 (20,743) (8,562) 46 1,702 1,757 

Inventories

 5,588 (13,056) 5,334  (6,093) 2,093 (7,170)

Prepaid expenses and other assets

 (2,514) 10,629 (5,948) (3,568) (870) 9,332 

Accounts payable

 (3,979) 7,217 (2,176) 263 6,662 11,475 

Accrued expenses

 (3,169) (3,812) (1,320) 5,919 1,682 27,671 

Deferred income on shipments to distributors

 (2,381) 4,623 (1,915) 9,713 (5,298) 7,809 

Income taxes

 5,189 (7,816) 5,855  (3,040) 776 (3,371)
       

Other non-current liabilities

 (10,625) (11,161) (20,543)

Net cash provided by operating activities

 120,150 97,050 88,742  128,910 105,447 137,443 

Investing Activities

 
 
 
 
 
 
  
 
 
 
 
 
 

Purchases of available-for-sale investments

 (213,883) (192,450) (178,676) (185,231) (107,366) (166,094)

Proceeds from sales and maturities of available-for-sale investments

 210,824 235,517 193,474 

Sales and maturities of available-for-sale investments

 161,921 171,831 156,520 

Purchases of property and equipment

 (10,472) (102,043) (8,690) (10,927) (11,268) (11,225)

Purchases of other assets

 (5,939) (8,508) (4,018) (8,801) (6,399) (5,514)

Acquisitions of businesses, net of cash acquired

 (86,441) (71,852) (27,262) (6,546) (96,112)  
       

Net cash used in investing activities

 (105,911) (139,336) (25,172) (49,584) (49,314) (26,313)

Financing Activities

 
 
 
 
 
 
  
 
 
 
 
 
 

Proceeds from issuance of common stock, net of shares withheld for taxes

 15,301 15,148 7,660 

Excess income tax benefit from employee stock-based awards

 290 1,294 2,404 

Repurchases of common stock

 (26,022) (62,019) (110,063)

Proceeds from issuance of long-term debt, net

  98,325    81,238  

Payments on debt

 (13,434)  (7,174) (5,000) (94,706) (7,500)
       

Repurchases of common stock

 (40,543) (71,448) (71,676)

Payment of taxes withheld for vested stock awards

 (11,133) (13,869) (9,622)

Proceeds from the issuance of common stock

 13,299 16,998 22,942 

Excess income tax benefit from stock-based awards

 572 2,497 632 

Payment of acquisition-related contingent consideration

 (9,500) (4,464)  

Net cash provided by (used in) financing activities

 (23,865) 52,748 (107,173)

Net cash used in financing activities

 (52,305) (83,754) (65,224)

Increase (decrease) in cash and cash equivalents

 
(9,626

)
 
10,462
 
(43,603

)
 
27,021
 
(27,621

)
 
45,906
 

Cash and cash equivalents at beginning of period

 105,426 94,964 138,567  114,085 141,706 95,800 
       

Cash and cash equivalents at end of period

 $95,800 $105,426 $94,964  $141,106 $114,085 $141,706 
       
       

Supplemental Disclosure of Cash Flow Information:

              

Interest paid

 $2,925 $677 $35  $2,222 $2,470 $2,950 
       
       

Income taxes paid

 $3,838 $23,564 $8,241  $11,185 $2,157 $11,587 
       
       

Supplemental Disclosure of Non-Cash Activity:

              

Stock issued in business combination

 $19,248 $ $  $4,181 $ $ 
       
       

   

The accompanying notes are an integral part of these Consolidated Financial Statements.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016

1. Description of Business

        Silicon Laboratories Inc. (the "Company"), a Delaware corporation, developsis a provider of silicon, software and markets mixed-signal analog intensive integrated circuits (ICs)solutions for a broad rangethe Internet of applications for globalThings (IoT), Internet infrastructure, industrial, consumer and automotive markets. Within the semiconductor industry, the Company is known as a "fabless" company meaning that the ICsintegrated circuits (ICs) incorporated in its products are manufactured by third-party foundry semiconductor companies.

2. Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

        The Company prepares financial statements on a 52- or 53-week fiscal year that ends on the Saturday closest to December 31. Fiscal 2013, 20122016 and 2011 were 52-week years2015 had 52 weeks and ended on December 28, 2013, December 29, 201231, 2016 and December 31, 2011,January 2, 2016, respectively. Fiscal 2014 had 53 weeks with the extra week occurring in the fourth quarter of the year and ended on January 3, 2015. The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation.

Foreign Currency Transactions

        The Company's foreign subsidiaries are considered to be extensions of the U.S. Company. The functional currency of the foreign subsidiaries is the U.S. dollar. Accordingly, gains and losses resulting from remeasuring transactions denominated in currencies other than U.S. dollars are included in other, income (expense), net in the Consolidated Statements of Income.

Use of Estimates

        The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Among the significant estimates affecting the financial statements are those related to inventories, stock-based compensation, investments in auction-rate securities, acquired intangible assets, goodwill, long-lived assets and income taxes. Actual results could differ from those estimates, and such differences could be material to the financial statements.

Reclassifications

        Certain reclassifications have been made to prior year financial statements to conform to current year presentation.

Fair Value of Financial Instruments

        The fair values of the Company's financial instruments are recorded using a hierarchalhierarchical disclosure framework based upon the level of subjectivity of the inputs used in measuring assets and liabilities. The three levels are described below:


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

2. Significant Accounting Policies (Continued)

Cash and Cash Equivalents

        Cash and cash equivalents consist of cash deposits, certificates of deposit, money market funds and investments in debt securities with original maturities of ninety days or less when purchased.

Investments

        The Company's investments typically have original maturities greater than ninety days as of the date of purchase and are classified as either available-for-sale or trading securities. Investments in available-for-sale securities are reported at fair value, with unrealized gains and losses, net of tax, recorded as a component of accumulated other comprehensive lossincome (loss) in the Consolidated Balance Sheet. Investments in trading securities are reported at fair value, with both realized and unrealized gains and losses recorded in other, income (expense), net in the Consolidated Statement of Income. Investments in which the Company has the ability and intent, if necessary, to liquidate in order to support its current operations (including those with contractual maturities greater than one year from the date of purchase) are classified as short-term.

        The Company reviews its available-for-sale investments as of the end of each reporting period for other-than-temporary declines in fair value based on the specific identification method. The Company considers various factors in determining whether an impairment is other-than-temporary, including the severity and duration of the impairment, changes in underlying credit ratings, forecasted recovery, its intent to sell or the likelihood that it would be required to sell the investment before its anticipated recovery in market value and the probability that the scheduled cash payments will continue to be made. When the Company concludes that an other-than-temporary impairment has occurred, the Company assesses whether it intends to sell the security or if it is more likely than not that it will be required to sell the security before recovery. If either of these two conditions is met, the Company recognizes a charge in earnings equal to the entire difference between the security's amortized cost basis and its fair value. If the Company does not intend to sell a security and it is not more likely than not that it will be required to sell the security before recovery, the unrealized loss is separated into an amount representing the credit loss, which is recognized in earnings, and the amount related to all other factors, which is recorded in accumulated other comprehensive loss.income (loss).

        In addition, the Company has made equity investments in non-publicly traded companies that it accounts for under the cost method. The Company periodically reviews these investments for other-than-temporary declines in fair value based on the specific identification method and writes down investments to their fair values when it determines that an other-than-temporary decline has occurred. There were no impairment charges recognized on equity investments during any of the periods presented.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

2. Significant Accounting Policies (Continued)

Derivative Financial Instruments

        The Company uses derivative financial instruments to manage certain exposures to the variability of interest rates and foreign currency exchange rates. The Company's objective is to offset increases and decreases in expenses resulting from changes in interest ratesthese exposures with gains and losses on the derivative contracts, thereby reducing volatility of earnings. The Company does not use derivative contracts for speculative or trading purposes. The effective portion ofCompany recognizes derivatives, on a gross basis, in the gain or loss on interest rate swaps is recorded in accumulated other comprehensive loss as a separate component of stockholders' equity and is subsequently recognized in


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

2. Significant Accounting Policies (Continued)

earnings when the hedged exposure affects earnings.Balance Sheet at fair value. Cash flows from derivatives are classified according to the nature of the cash receipt or payment in the Consolidated Statement of Cash Flows.

        The Company uses interest rate swap agreements to manage exposure to interest rate risks. The swap agreements are designated and qualify as cash flow hedges. The effective portion of the gain or loss on the interest rate swaps is recorded in accumulated other comprehensive income (loss) as a separate component of stockholders' equity and is subsequently recognized as interest expense in the Consolidated Statement of Income when the hedged exposure affects earnings.

        The Company uses foreign currency forward contracts to manage exposure to foreign exchange risk. These instruments are used to reduce the earnings impact that exchange rate fluctuations have on non-U.S. dollar balance sheet exposures. The Company recognizes gains and losses on the foreign currency forward contracts in other, net in the Consolidated Statement of Income in the same period as the remeasurement loss and gain of the related foreign currency denominated asset or liability. The Company does not apply hedge accounting to its foreign currency derivative instruments.

Inventories

        Inventories are stated at the lower of cost, determined using the first-in, first-out method, or market. The Company writes down the carrying value of inventory to net realizable value for estimated obsolescence or unmarketable inventory based upon assumptions about the age of inventory, future demand and market conditions. Inventory impairment charges establish a new cost basis for inventory and charges are not subsequently reversed to income even if circumstances later suggest that increased carrying amounts are recoverable.

Property and Equipment

        Property and equipment are stated at cost, net of accumulated depreciation. Depreciation is computed using the straight-line method over the useful lives of the assets ranging from three to seven years. Leasehold improvements are depreciated over the contractual lease period or their useful life, whichever is shorter.

        In fiscal 2012, theThe Company purchasedowns the facilities it had previously leased for its headquarters in Austin, Texas. The buildings are located on land which is leased through 2099 from a third party. The rents for these ground leases were prepaid for the term of the leases by the previous lessee. The buildings and leasehold interest in ground leases are being depreciated on a straight-line basis over their estimated useful lives of 40 years and 86 years, respectively.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

2. Significant Accounting Policies (Continued)

Business Combinations

        The Company records business combinations using the acquisition method of accounting and, accordingly, allocates the fair value of purchase consideration to the assets acquired and liabilities assumed based on their fair values at the acquisition date. The excess of the fair value of purchase consideration over the fair value of the assets acquired and liabilities assumed is recorded as goodwill. The results of operations of the businesses acquired are included in the Company's consolidated results of operations beginning on the date of the acquisition.

Long-Lived Assets

        Purchased intangible assets are stated at cost, net of accumulated amortization, and are amortized using the straight-line method over their estimated useful lives, ranging from sixtwo to twelve years. Fair values are determined primarily using the income approach, in which the Company projects future expected cash flows and applies an appropriate discount rate.

        Long-lived assets "held and used" by the Company are reviewed for impairment whenever events or changes in circumstances indicate that their net book value may not be recoverable. When such factors and circumstances exist, the Company compares the projected undiscounted future cash flows associated with the related asset or group of assets over their estimated useful lives against their respective carrying amounts. Impairment, if any, is based on the excess of the carrying amount over the fair value of those assets and is recorded in the period in which the determination was made.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

2. Significant Accounting Policies (Continued)

        The carrying value of goodwill is reviewed at least annually by the Company for possible impairment. The goodwill impairment test is a two-step process. The first step of the impairment analysis compares the fair value of the reporting unit to the net book value of the reporting unit. In determining fair value, several valuation methodologies are allowed, although quoted market prices are the best evidence of fair value. If the results of the first step demonstrate that the net book value is greater than the fair value, the Company must proceed to step two of the analysis. Step two of the analysis compares the implied fair value of goodwill to its carrying amount. If the carrying amount of goodwill exceeds its implied fair value, an impairment loss is recognized equal to that excess. The Company tests goodwill for impairment annually as of the first day of its fourth fiscal quarter and in interim periods if events occur that would indicate that the carrying value of goodwill may be impaired.

Revenue Recognition

        Revenues are generated almost exclusivelypredominately by sales of the Company's ICs.products. The Company recognizes revenue when all of the following criteria are met: 1) there is persuasive evidence that an arrangement exists, 2) delivery of goods has occurred, 3) the sales price is fixed or determinable, and 4) collectibility is reasonably assured. Generally, revenue from product sales to direct customers and contract manufacturers is recognized upon shipment.

        A portion of the Company's sales are made to distributors under agreements allowing certain rights of return and price protection related to the final selling price to the end customers. Accordingly, the Company defers revenue and cost of revenue on such sales until the distributors sell the product to the end customers. The net balance of deferred revenue less deferred cost of revenue associated with inventory shipped to a distributor but not yet sold to an end customer is recorded in the deferred


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

2. Significant Accounting Policies (Continued)

income on shipments to distributors liability on the Consolidated Balance Sheet. Such net deferred income balance reflects the Company's estimate of the impact of rights of return and price protection.

        A small portion of the Company's revenues is derived from the sale of patents. The above revenue recognition criteria for patent sales are generally met upon the execution of the patent sale agreement.

Shipping and Handling

        Shipping and handling costs are classified as a component of cost of revenues in the Consolidated Statements of Income.

Stock-Based Compensation

        The Company has stock-based compensation plans, which are more fully described in Note 13,12,Stock-Based Compensation. The Company accounts for those plans using a fair-value method and recognizes the expense in its Consolidated Statement of Income.

Research and Development

        Research and development costs are expensed as incurred. Research and development expense consists primarily of personnel-related expenses, including stock-based compensation, as well as new product masks, external consulting and services costs, equipment tooling, equipment depreciation, amortization of intangible assets, and an allocated portion of our occupancy costs. Assets purchased to support the Company's ongoing research and development activities are capitalized when related to products which have achieved technological feasibility or have an alternative future use, and are amortized over their estimated useful lives.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

2. Significant Accounting Policies (Continued)

Advertising

        Advertising costs are expensed as incurred. Advertising expenses were $2.0$1.6 million, $1.7$1.8 million and $1.6$1.7 million in fiscal 2013, 20122016, 2015 and 2011,2014, respectively.

Income Taxes

        The Company accounts for income taxes using the asset and liability method whereby deferred tax asset and liability account balances are determined based on differences between the financial reporting and the tax bases of assets and liabilities and are measured using the enacted tax laws and related rates that will be in effect when the differences are expected to reverse. These differences result in deferred tax assets and liabilities, which are included in the Company's Consolidated Balance Sheet. The Company then assesses the likelihood that the deferred tax assets will be realized. A valuation allowance is established against deferred tax assets to the extent the Company believes that it is more likely than not that the deferred tax assets will not be realized, taking into consideration the level of historical taxable income and projections for future taxable income over the periods in which the temporary differences are deductible.

        Uncertain tax positions must meet a more-likely-than-not threshold to be recognized in the financial statements and the tax benefits recognized are measured based on the largest benefit that has


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

2. Significant Accounting Policies (Continued)

a greater than 50% likelihood of being realized upon final settlement. See Note 17,16,Income Taxes, for additional information.

Recent Accounting Pronouncements

        In February 2013,January 2017, the Financial Accounting Standards Board (FASB) issued FASB Accounting Standards Update (ASU) No. 2013-02,2017-01Comprehensive Income, Business Combinations (Topic 220)—Reporting805): Clarifying the Definition of Amounts Reclassified Out of Accumulated Other Comprehensive Incomea Business.. This ASU 2013-02clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. This ASU is effective for annual periods beginning after December 15, 2017, including interim periods within those periods. The Company is currently evaluating the effect that the adoption of this ASU will have on its financial statements.

        In August 2016, the FASB issued ASU No. 2016-16,Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other Than Inventory. This ASU requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the facerecognition of the financial statements or inincome tax consequences of an intra-entity transfer of an asset other than inventory when the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income, but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For amounts that are not required to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures that provide additional details about those amounts.transfer occurs. This ASU 2013-02 is effective prospectively for annual reporting periods beginning after December 15, 2012.2017, including interim reporting periods within those annual reporting periods, with early adoption permitted. The amendments in this ASU should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company has elected to early adopt this ASU on January 1, 2017. The Company currently expects to record a cumulative-effect adjustment to decrease retained earnings by between $0.0 and $2.5 million with a corresponding adjustment to non-current assets and deferred taxes on the Consolidated Balance Sheet.

        In August 2016, the FASB issued ASU No. 2016-15,Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. This ASU provides guidance on statement of cash flows presentation for eight specific cash flow issues where diversity in practice exists. This ASU is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. The Company is currently evaluating the effect that the adoption of this ASU did notwill have an impacton its financial statements.

        In June 2016, the FASB issued ASU No. 2016-13,Financial Instruments—Credit Losses (Topic326): Measurement of Credit Losses on Financial Instruments. This ASU requires instruments measured at amortized cost to be presented at the net amount expected to be collected. Entities are also required to record allowances for available-for-sale debt securities rather than reduce the carrying amount. This ASU is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company is currently evaluating the effect that the adoption of this ASU will have on its financial statements.

        In March 2016, the FASB issued ASU No. 2016-09,Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting. This ASU simplifies several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities and classification on the Company's financial statements, but did amendstatement of cash flows. This ASU is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The Company expects the disclosures for accumulated other comprehensive loss.primary impact of this ASU to be the income tax effects of awards recognized in the income statement when the awards are vested or settled.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

2. Significant Accounting Policies (Continued)

        In February 2016, the FASB issued ASU No. 2016-02,Leases (Topic 842). The core principle of Topic 842 is that a lessee should recognize the assets and liabilities that arise from leases. For operating leases, a lessee is required to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, in the statement of financial position. This ASU is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the effect that the adoption of this ASU will have on its financial statements.

        In January 2016, the FASB issued ASU No. 2016-01,Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. This ASU addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. This ASU is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company is currently evaluating the effect that the adoption of this ASU will have on its financial statements.

        In July 2015, the FASB issued ASU No. 2015-11,Inventory (Topic 330): Simplifying the Measurement of Inventory. This ASU requires inventory to be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. This ASU is effective for fiscal years beginning after December 15, 2016, including interim periods within those fiscal years. The Company does not expect that the adoption of this ASU will have a material impact on its financial statements.

        In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes the revenue recognition requirements in Accounting Standards Codification (ASC) 605,Revenue Recognition. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The guidance provides a five-step process to achieve that core principle. In August 2015, the FASB issued ASU No. 2015-14,Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which deferred the effective date of ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. In 2016, the FASB issued the following amendments to ASC 606: ASU No. 2016-08,Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net), which clarifies the implementation guidance on principal versus agent considerations; ASU No. 2016-10,Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing, which clarifies guidance on identification of performance obligations and licensing implementation; ASU No. 2016-12,Compensation—Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients, which provides clarifying guidance on assessing collectibility, presentation of sales taxes, noncash consideration, contract modifications and completed contracts; and ASU No. 2016-20,Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers, which clarifies narrow aspects of ASC 606 or corrects unintended application of the guidance. The standard may be applied retrospectively to each prior period presented (full retrospective method) or retrospectively with the cumulative effect recognized as of the date of initial application (modified retrospective method). Under the new standard, the Company expects the timing of revenue recognition from sales to distributors to be accelerated. The Company will recognize revenue at the time of sale to the distributor, net of the impact of estimated price adjustments and rights of return.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

2. Significant Accounting Policies (Continued)

The Company currently anticipates adopting this standard using the modified retrospective method. The Company is continuing to evaluate the effect that the adoption will have on its financial statements.

3. Earnings Per Share

        The following table sets forth the computation of basic and diluted earnings per share (in thousands, except per share data):


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Net income

 $49,819 $63,548 $35,472  $61,494 $29,586 $38,021 
       

Shares used in computing basic earnings per share

 
42,715
 
42,136
 
43,421
  41,713 42,309 42,970 

Effect of dilutive securities:

 
 
 
 
 
 
  
 
 
 
 
 
 

Stock options and other stock-based awards

 822 970 1,411  663 636 823 
       

Shares used in computing diluted earnings per share

 43,537 43,106 44,832  42,376 42,945 43,793 
       
       

Earnings per share:

              

Basic

 $1.17 $1.51 $0.82  $1.47 $0.70 $0.88 

Diluted

 $1.14 $1.47 $0.79  $1.45 $0.69 $0.87 

        For fiscal years ended December 28, 2013, December 29, 201231, 2016, January 2, 2016 and December 31, 2011,January 3, 2015, approximately 0.40.1 million, 0.50.1 million and 0.40.1 million shares, respectively, consisting of restricted stock awards (RSUs), market stock awards (MSUs) and stock options, were not included in the diluted earnings per share calculation since the shares were anti-dilutive.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

4. Cash, Cash EquivalentsFair Value of Financial Instruments

        The following summarizes the valuation of the Company's financial instruments (in thousands). The tables do not include either cash on hand or assets and Investmentsliabilities that are measured at historical cost or any basis other than fair value.

 
 Fair Value Measurements
at December 31, 2016 Using
  
 
Description
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
 Significant Other
Observable
Inputs
(Level 2)
 Significant
Unobservable
Inputs
(Level 3)
 Total 

Assets:

             

Cash equivalents:

             

Money market funds

 $69,432 $ $ $69,432 

Certificates of deposit

    7,153    7,153 

Municipal bonds

    3,904    3,904 

Total cash equivalents

 $69,432 $11,057 $ $80,489 

Short-term investments:

  
 
  
 
  
 
  
 
 

Municipal bonds

 $ $79,702 $ $79,702 

Corporate bonds

    31,036    31,036 

Variable-rate demand notes

    16,400    16,400 

U.S. government bonds

  12,416      12,416 

Asset-backed securities

    8,173    8,173 

Commercial paper

    5,233    5,233 

International government bonds

    1,001    1,001 

Total short-term investments

 $12,416 $141,545 $ $153,961 

Long-term investments:

  
 
  
 
  
 
  
 
 

Auction rate securities

 $ $ $5,196 $5,196 

Total long-term investments

 $ $ $5,196 $5,196 

Other assets, net:

  
 
  
 
  
 
  
 
 

Derivative instruments

 $ $1,808 $ $1,808 

Total

 $ $1,808 $ $1,808 

Total

 $81,848 $154,410 $5,196 $241,454 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

4. Fair Value of Financial Instruments (Continued)

 
 Fair Value Measurements
at January 2, 2016 Using
  
 
Description
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
 Significant Other
Observable
Inputs
(Level 2)
 Significant
Unobservable
Inputs
(Level 3)
 Total 

Assets:

             

Cash equivalents:

             

Money market funds

 $37,721 $ $ $37,721 

Commercial paper

    11,272    11,272 

Certificates of deposit

    2,845    2,845 

U.S. government agency

    1,599    1,599 

Municipal bonds

    1,577    1,577 

Total cash equivalents

 $37,721 $17,293 $ $55,014 

Short-term investments:

  
 
  
 
  
 
  
 
 

Municipal bonds

 $ $93,516 $ $93,516 

Commercial paper

    11,176    11,176 

Variable-rate demand notes

    8,995    8,995 

Certificates of deposit

    8,000    8,000 

U.S. government agency

    3,998    3,998 

International government bonds

    2,220    2,220 

Corporate bonds

    996    996 

Total short-term investments

 $ $128,901 $ $128,901 

Long-term investments:

  
 
  
 
  
 
  
 
 

Auction rate securities

 $ $ $7,126 $7,126 

Total long-term investments

 $ $ $7,126 $7,126 

Other assets, net:

  
 
  
 
  
 
  
 
 

Derivative instruments

 $ $92 $ $92 

Total

 $ $92 $ $92 

Total

 
$

37,721
 
$

146,286
 
$

7,126
 
$

191,133
 

Liabilities:

             

Accrued expenses:

             

Contingent consideration

 $ $ $4,749 $4,749 

Other non-current liabilities:

  
 
  
 
  
 
  
 
 

Contingent consideration

 $ $ $9,324 $9,324 

Total

 $ $ $14,073 $14,073 

Valuation methodology

        The Company's cash equivalents and short-term investments that are classified as Level 2 are valued using non-binding market consensus prices that are corroborated with observable market data; quoted market prices for similar instruments in active markets; or pricing models, such as a discounted cash flow model, with all significant inputs derived from or corroborated with observable market data.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

4. Fair Value of Financial Instruments (Continued)

Investments classified as Level 3 are valued using a discounted cash flow model. The assumptions used in preparing the discounted cash flow model include estimates for interest rates, amount of cash flows, expected holding periods of the securities and a discount to reflect the Company's inability to liquidate the securities. The Company's derivative instruments are valued using discounted cash flow models. The assumptions used in preparing the valuation models include quoted interest swap rates, foreign exchange rates, forward and spot prices for currencies, and market observable data of similar instruments.

        The Company's contingent consideration is valued using a Monte Carlo simulation model or a probability weighted discounted cash flow model. The assumptions used in preparing the Monte Carlo simulation model include estimates for revenue growth rates, revenue volatility, contractual terms and discount rates. The assumptions used in preparing the discounted cash flow model include estimates for outcomes if milestone goals are achieved, the probability of achieving each outcome and discount rates.

Available-for-sale investments

        The Company's investments typically have original maturities greater than ninety days as of the date of purchase. Investments are reported at fair value, with unrealized gains and losses, net of tax, recorded as a component of accumulated other comprehensive income (loss) in the Consolidated Balance Sheet. The following summarizes the contractual underlying maturities of the Company's available-for-sale investments at December 31, 2016 (in thousands):

 
 Cost Fair Value 

Due in one year or less

 $159,670 $159,624 

Due after one year through ten years

  59,628  59,426 

Due after ten years

  21,400  20,596 

 $240,698 $239,646 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

4. Fair Value of Financial Instruments (Continued)

        The available-for-sale investments that were in a continuous unrealized loss position, aggregated by length of time that individual securities have been in a continuous loss position, were as follows (in thousands):

 
 Less Than 12 Months 12 Months or Greater Total 
As of December 31, 2016
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized
Losses
 

Municipal bonds

 $69,379 $(140)$ $ $69,379 $(140)

Corporate bonds

  18,561  (128)     18,561  (128)

U.S. government bonds

  10,364  (16)     10,364  (16)

Auction rate securities

      5,196  (804) 5,196  (804)

Asset-backed securities

  3,176  (4)     3,176  (4)

 $101,480 $(288)$5,196 $(804)$106,676 $(1,092)


 
 Less Than 12 Months 12 Months or Greater Total 
As of January 2, 2016
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized
Losses
 

Municipal bonds

 $29,271 $(30)$1,198 $(2)$30,469 $(32)

Auction rate securities

      7,126  (874) 7,126  (874)

International government bonds

  2,220  (7)     2,220  (7)

Corporate bonds

  996  (3)     996  (3)

 $32,487 $(40)$8,324 $(876)$40,811 $(916)

        The gross unrealized losses as of December 28, 2013 consisted of municipal bonds, money market funds, variable-rate demand notes, corporate bonds, certificates of deposit, commercial paper31, 2016 and asset backed securities. The Company's long-term investments consisted of auction-rate securities. In fiscal 2008, auctions for manyJanuary 2, 2016 were due primarily to the illiquidity of the Company's auction-rate securities and, to a lesser extent, to changes in market interest rates. The Company's auction-rate securities have been illiquid since 2008 when auctions for the securities failed because sell orders exceeded buy orders. As of December 28, 2013, the Company held $12.4 million par value auction-rate securities, all of which have experienced failed auctions. The underlying assets of the securities consisted of student loans and municipal bonds, of which $10.4 million were guaranteed by the U.S. government and the remaining $2.0 million were privately insured. As of December 28, 2013, $6.0 million had credit ratings of AA, $2.0 million had a credit rating of A and $4.4 million of the auction-rate securities had credit ratings of BBB. These securities have a contractual maturity dates ranging from 2033 todate of 2046 at December 28, 2013. The Company is receiving the underlying cash flows on all of its auction-rate securities. The principal amounts associated with failed auctions are not expected to be accessible until a successful auction occurs, the issuer redeems the securities, a buyer is found outside of the auction process or the underlying securities mature.31, 2016. The Company is unable to predict if these funds will become available before their maturity dates.date.

        The Company does not expect to need access to the capital represented by any of its auction-rate securities prior to their maturities. The Company does not intend to sell, and believes it is not more likely than not that it will be required to sell, its auction-rate securities before their anticipated recovery in market value or final settlement at the underlying par value. The Company believes that the credit ratings and credit support of the security issuers indicate that they have the ability to settle


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

4. Cash, Cash Equivalents and Investments (Continued)

the securities at par value. As such, the Company has determined that no other-than-temporary impairment losses existed as of December 28, 2013.31, 2016.

        The Company's cash, cash equivalentsAt December 31, 2016 and investments consisted of the following (in thousands):

 
 December 28, 2013 
 
 Cost Gross
Unrealized
Losses
 Gross
Unrealized
Gains
 Fair Value 

Cash and Cash Equivalents:

             

Cash on hand

 $45,544 $ $ $45,544 

Available-for-sale securities:

             

Money market funds

  39,538      39,538 

Certificates of deposit

  7,768      7,768 

Commercial paper

  2,499      2,499 

Municipal bonds

  451      451 
          

Total available-for-sale securities

  50,256      50,256 
          

Total cash and cash equivalents

 
$

95,800
 
$

 
$

 
$

95,800
 
          
          

Short-term Investments:

  
 
  
 
  
 
  
 
 

Available-for-sale securities:

             

Municipal bonds

 $119,289 $(11)$182 $119,460 

Variable-rate demand notes

  38,025      38,025 

Corporate bonds

  17,788  (4) 60  17,844 

Commercial paper

  3,748      3,748 

Asset-backed securities

  515    1  516 
          

Total short-term investments

 $179,365 $(15)$243 $179,593 
          
          

Long-term Investments:

  
 
  
 
  
 
  
 
 

Available-for-sale securities:

             

Auction rate securities

 $12,425 $(1,793)$ $10,632 
          

Total long-term investments

 $12,425 $(1,793)$ $10,632 
          
          

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

4. Cash, Cash Equivalents and Investments (Continued)


 
 December 29, 2012 
 
 Cost Gross
Unrealized
Losses
 Gross
Unrealized
Gains
 Fair Value 

Cash and Cash Equivalents:

             

Cash on hand

 $56,690 $ $ $56,690 

Available-for-sale securities:

             

U.S. Treasury bills

  25,049    1  25,050 

Money market funds

  22,685    1  22,686 

Municipal bonds

  1,000      1,000 
          

Total available-for-sale securities

  48,734    2  48,736 
          

Total cash and cash equivalents

 $105,424 $ $2 $105,426 
          
          

Short-term Investments:

  
 
  
 
  
 
  
 
 

Available-for-sale securities:

             

Corporate bonds

 $59,089 $(5)$267 $59,351 

Municipal bonds

  45,646  (7) 50  45,689 

Variable-rate demand notes

  41,785      41,785 

Asset-backed securities

  15,058    11  15,069 

U.S. government bonds

  12,638    25  12,663 

International government bonds

  1,991    17  2,008 
          

Total short-term investments

 $176,207 $(12)$370 $176,565 
          
          

Long-term Investments:

  
 
  
 
  
 
  
 
 

Available-for-sale securities:

             

Auction rate securities

 $12,525 $(1,156)$ $11,369 
          

Total long-term investments

 $12,525 $(1,156)$ $11,369 
          
          

        The available-for-sale investments thatJanuary 2, 2016, there were in a continuousno material unrealized loss position, aggregated by length of time that individual securities have been in a continuous loss position, were as follows (in thousands):

 
 Less Than 12 Months 12 Months or Greater Total 
As of December 28, 2013
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized
Losses
 

Municipal bonds

 $11,079 $(11)$ $ $11,079 $(11)

Auction rate securities

      10,632  (1,793) 10,632  (1,793)

Corporate bonds

  2,605  (4)     2,605  (4)
              

 $13,684 $(15)$10,632 $(1,793)$24,316 $(1,808)
              
              

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

4. Cash, Cash Equivalents and Investments (Continued)


 
 Less Than 12 Months 12 Months or Greater Total 
As of December 29, 2012
 Fair
Value
 Gross
Unrealized
Losses
 Fair
Value
 Gross
Unrealized Losses
 Fair
Value
 Gross
Unrealized
Losses
 

Municipal bonds

 $17,152 $(7)$ $ $17,152 $(7)

Auction rate securities

      11,369  (1,156) 11,369  (1,156)

Corporate bonds

  9,543  (5)     9,543  (5)
              

 $26,695 $(12)$11,369 $(1,156)$38,064 $(1,168)
              
              

        The gross unrealized losses as of December 28, 2013 and December 29, 2012 were due primarily to the illiquidity of the Company's auction-rate securities and, to a lesser extent, to changes in market interest rates.

        The following summarizes the contractual underlying maturities ofgains associated with the Company's available-for-sale investments at December 28, 2013 (in thousands):

 
 Cost Fair
Value
 

Due in one year or less

 $115,109 $115,177 

Due after one year through ten years

  80,987  81,147 

Due after ten years

  45,950  44,157 
      

 $242,046 $240,481 
      
      

5. Derivative Financial Instruments

        The Company is exposed to interest rate fluctuations in the normal course of its business, including through its Credit Facilities. The interest payments on the facility are calculated using a variable-rate of interest. The Company has entered into an interest rate swap agreement with an original notional value of $100 million (equal to the full amount borrowed under the Term Loan Facility) and, effectively, converted the LIBOR portion of the variable-rate interest payments to fixed-rate interest payments through July 2017 (the maturity date of the Term Loan Facility). The Company's interest rate swap agreement is designated and qualifies as a cash flow hedge.

        The Company's previous swap agreement with a notional value of $50.1 million was terminated in fiscal 2012 in connection with the Company's purchase of its corporate headquarters facilities. See Note 9,Acquisitions, for additional information.

        The Company estimates the fair values of derivatives based on quoted prices and market observable data of similar instruments. If the Term Loan Facility or the interest rate swap agreement is terminated prior to maturity, the fair value of the interest rate swap recorded in accumulated other comprehensive loss may be recognized in the Consolidated Statement of Income based on an assessment of the agreements at the time of termination. The termination of the Company's swap agreement with a notional value of $50.1 million resulted in its remaining fair value of $0.9 million that was previously recorded in accumulated other comprehensive loss to be reclassified into earnings during fiscal 2012. The Company did not discontinue any other cash flow hedges in the periods presented.investments.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

5. Derivative Financial Instruments (Continued)

        The Company measures the effectiveness of its cash flow hedge by comparing the change in fair value of the hedged variable interest payments with the change in fair value of the interest rate swap. The Company recognizes ineffective portions of the hedge, as well as amounts not included in the assessment of effectiveness, in the Consolidated Statement of Income. As of December 28, 2013, no portion of the gains or losses from the Company's hedging instrument was excluded from the assessment of effectiveness. Hedge ineffectiveness was not material for any of the periods presented.

        The Company's derivative financial instrument consisted of the following (in thousands):

 
  
 Fair Value 
 
 Balance Sheet Location December 28,
2013
 December 29,
2012
 

Interest rate swap

 Other assets, net $513 $ 

 Other non-current liabilities    658 

        The before-tax effect of derivative instruments in cash flow hedging relationships was as follows (in thousands):

 
 Gain (Loss) Recognized in
OCI on Derivatives
(Effective Portion)
during the Year Ended
 Location
of Loss
Reclassified
into Income
 Loss Reclassified
from Accumulated
OCI into Income
(Effective Portion)
during the Year Ended
 
 
 December 28,
2013
 December 29,
2012
 December 31,
2011
  
 December 28,
2013
 December 29,
2012
 December 31,
2011
 

Interest rate swaps

 $611 $(956)$(424)Rent expense $ $(2,197)$(2,237)

          Interest expense  (560) (98)  

        The Company expects to reclassify $0.5 million of its interest rate swap losses included in accumulated other comprehensive loss as of December 28, 2013 into earnings in the next 12 months, which would be offset by lower interest payments.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

6. Fair Value of Financial Instruments

        The following summarizes the valuation of the Company's financial instruments (in thousands). The tables do not include either cash on hand or assets and liabilities that are measured at historical cost or any basis other than fair value.

 
 Fair Value Measurements
at December 28, 2013 Using
  
 
Description
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
 Significant Other
Observable
Inputs
(Level 2)
 Significant
Unobservable
Inputs
(Level 3)
 Total 

Assets:

             

Cash Equivalents:

             

Money market funds

 $39,538 $ $ $39,538 

Certificates of deposit

    7,768    7,768 

Commercial paper

    2,499    2,499 

Municipal bonds

    451    451 
          

Total cash equivalents

 $39,538 $10,718 $ $50,256 

Short-term Investments:

  
 
  
 
  
 
  
 
 

Municipal bonds

 $ $119,460 $ $119,460 

Variable-rate demand notes

    38,025    38,025 

Corporate bonds

    17,844    17,844 

Commercial paper

    3,748    3,748 

Asset-backed securities

    516    516 
          

Total short-term investments

 $ $179,593 $ $179,593 

Long-term Investments:

  
 
  
 
  
 
  
 
 

Auction rate securities

 $ $ $10,632 $10,632 
          

Total long-term investments

 $ $ $10,632 $10,632 

Other assets, net:

  
 
  
 
  
 
  
 
 

Derivative instruments

 $ $513 $ $513 
          

Total

 $ $513 $ $513 
          

Total

 
$

39,538
 
$

190,824
 
$

10,632
 
$

240,994
 
          
          

Other non-current liabilities:

             

Contingent consideration

 $ $ $12,919 $12,919 
          

Total

 $ $ $12,919 $12,919 
          
          

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

6.4. Fair Value of Financial Instruments (Continued)

 
 Fair Value Measurements
at December 29, 2012 Using
  
 
Description
 Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
 Significant Other
Observable
Inputs
(Level 2)
 Significant
Unobservable
Inputs
(Level 3)
 Total 

Assets:

             

Cash Equivalents:

             

U.S. Treasury bills

 $25,050 $ $ $25,050 

Money market funds

  22,686      22,686 

Municipal bonds

    1,000    1,000 
          

Total cash equivalents

 $47,736 $1,000 $ $48,736 

Short-term Investments:

  
 
  
 
  
 
  
 
 

Corporate bonds

 $ $59,351 $ $59,351 

Municipal bonds

    45,689    45,689 

Variable-rate demand notes

    41,785    41,785 

Asset-backed securities

    15,069    15,069 

U.S. government bonds

  12,663      12,663 

International government bonds

    2,008    2,008 
          

Total short-term investments

 $12,663 $163,902 $ $176,565 

Long-term Investments:

  
 
  
 
  
 
  
 
 

Auction rate securities

 $ $ $11,369 $11,369 
          

Total long-term investments

 $ $ $11,369 $11,369 
          

Total

 
$

60,399
 
$

164,902
 
$

11,369
 
$

236,670
 
          
          

Liabilities:

             

Derivative instruments

 $ $658 $ $658 

Contingent consideration

      2,750  2,750 
          

Total

 $ $658 $2,750 $3,408 
          
          

        The Company's cash equivalents and short-term investments that are classified as Level 1 are valued using quoted prices and other relevant information generated by market transactions involving identical assets. Cash equivalents and short-term investments classified as Level 2 are valued using non-binding market consensus prices that are corroborated with observable market data; quoted market prices for similar instruments in active markets; or pricing models, such as a discounted cash flow model, with all significant inputs derived from or corroborated with observable market data. Investments classified as Level 3 are valued using a discounted cash flow model. The assumptions used in preparing the discounted cash flow model include estimates for interest rates, amount of cash flows, expected holding periods of the securities and a discount to reflect the Company's inability to liquidate the securities. The Company's derivative instruments are valued using a discounted cash flow model. The assumptions used in preparing the discounted cash flow model include quoted interest swap rates and market observable data of similar instruments.

        The Company's contingent consideration is valued using a Monte Carlo simulation model or a probability weighted discounted cash flow model. The assumptions used in preparing the Monte Carlo


Table of Contentsfair value measurements


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

6. Fair Value of Financial Instruments (Continued)

simulation model include estimates for revenue growth rates, revenue volatility, contractual terms and discount rates. The assumptions used in preparing the discounted cash flow model include estimates for outcomes if milestone goals are achieved, the probability of achieving each outcome and discount rates.

        The following summarizes quantitative information about Level 3 fair value measurements.

Auction rate securities

Fair Value at
December 28, 2013
(000s)
 Valuation Technique Unobservable Input Weighted
Average
$10,632 Discounted cash flow Estimated yield 1.11%

 

 

 

 

Expected holding period

 

10 years

 

 

 

 

Estimated discount rate

 

4.05%
Fair Value at
December 31, 2016
(000s)
 Valuation Technique Unobservable Input Weighted
Average
$5,196 Discounted cash flow Estimated yield 1.09%

 

 

 

 

Expected holding period

 

10 years

 

 

 

 

Estimated discount rate

 

3.89%

        The Company has followed an established internal control procedure used in valuing auction rate securities. The procedure involves the analysis of valuation techniques and evaluation of unobservable inputs commonly used by market participants to price similar instruments, and which have been demonstrated to provide reasonable estimates of prices obtained in actual market transactions. Outputs from the valuation process are assessed against various market sources when they are available, including marketplace quotes, recent trades of similar illiquid securities, benchmark indices and independent pricing services. The technique and unobservable input parameters may be recalibrated periodically to achieve an appropriate estimation of the fair value of the securities.

        Significant changes in any of the unobservable inputs used in the fair value measurement of auction rate securities in isolation could result in a significantly lower or higher fair value measurement. An increase in expected yield would result in a higher fair value measurement, whereas an increase in expected holding period or estimated discount rate would result in a lower fair value measurement. Generally, a change in the assumptions used for expected holding period is accompanied by a directionally similar change in the assumptions used for estimated yield and discount rate.

Contingent consideration

Fair Value at
December 28, 2013
(000s)
Valuation TechniqueUnobservable InputRange
$12,919Monte Carlo simulationExpected revenue growth rate26.2% - 51.9%





Expected revenue volatility


20.0%





Expected term


1.0 - 5.0 years





Estimated discount rate


0.1% - 1.6%

        The Company has followed an established internal control procedure used in valuing contingent consideration. The valuation of contingent consideration for the Energy Micro acquisition iswas based on a Monte Carlo simulation model. The fair value of this valuation iswas estimated on a quarterly basis through a collaborative effort by the Company's sales, marketing and finance departments.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

6.4. Fair Value of Financial Instruments (Continued)

        Significant changes in any of the unobservable inputs used in the fair value measurement of contingent consideration in isolation could result in a significantly lower or higher fair value. A change in projected revenue growth rates would be accompanied by a directionally similar change in fair value. A change in discount rate would be accompanied by a directionally opposite change in fair value.

        The following summarizes the activity in Level 3 financial instruments for the years ended December 28, 201331, 2016 and December 29, 2012January 2, 2016 (in thousands):

Assets


 Year Ended  Year Ended 
Auction Rate Securities
 December 28,
2013
 December 29,
2012
  December 31,
2016
 January 2,
2016
 

Beginning balance

 $11,369 $17,477  $7,126 $7,419 

Settlements

 (100) (6,700) (2,000)  

Gain (loss) included in other comprehensive income

 (637) 592 
     

Gain (loss) included in other comprehensive income (loss)

 70 (293)

Ending balance

 $10,632 $11,369  $5,196 $7,126 
     
     

Liabilities


 Year Ended  Year Ended 
Contingent Consideration (1)
 December 28,
2013
 December 29,
2012
  December 31,
2016
 January 2,
2016
 

Beginning balance

 $2,750 $876  $14,073 $18,438 

Issues

 13,964 4,004 

Gain recognized in earnings (2)

 (3,795) (2,130)
     

Settlements (2)

 (11,375) (4,464)

(Gain) loss recognized in earnings (3)

 (2,698) 99 

Ending balance

 $12,919 $2,750 
     

Balance at December 31, 2016

 $ $14,073 
     

Net gain for the period included in earnings attributable to contingent consideration held at the end of the period:

 $1,045 $1,254 
     

Net loss for the period included in earnings attributable to contingent consideration held at the end of the period:

 $ $(99)

(1)
In connection with the acquisition of Energy Micro, Ember and ChipSensors, the Company recorded contingent consideration based upon the expected achievement of certain milestone goals. Changes to the fair value of contingent consideration due to changes in assumptions used in preparing the valuation model arewere recorded in selling, general and administrative expenses in the Consolidated StatementsStatement of Income.

(2)
TheOn March 11, 2016, the Company reducedentered into an agreement which settled the estimated fair valuetotal amount of contingent consideration because certain milestone goals were either not achieved or were expectedrelated to be achieved atthe Energy Micro acquisition (including all amounts for fiscal 2015 through 2018). See Note 8,Acquisitions, for additional information.

(3)
The gain recognized in earnings was due to the settlement of the Energy Micro contingent consideration. This gain was offset in part by a lower outcome.charge of approximately $2.7 million recorded in fiscal 2016 for a portion of the contingent consideration accounted for as post-combination compensation expense.

Fair values of other financial instruments

        The Company's Term Loan Facilitydebt under the Credit Facilities bears interest at LIBORthe Eurodollar rate plus an applicable margin. The Credit Facilities are recorded at cost, but are measured at fair value of the Company's Term Loan Facility approximates its carrying values as of December 28, 2013 and December 29, 2012, based on the estimated margin observed for loans to companies under similar


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

6.4. Fair Value of Financial Instruments (Continued)

termsdisclosure purposes. Fair value is estimated based on Level 2 inputs, using a discounted cash flow analysis of future principal payments and credit profiles.projected interest based on current market rates. As of December 31, 2016 and January 2, 2016, the fair value of the Company's debt under the Credit Facilities was approximately $72.5 million and $77.5 million, respectively.

        The Company's other financial instruments, including cash, accounts receivable and accounts payable, are recorded at amounts that approximate their fair values due to their short maturities.

7.5. Derivative Financial Instruments

        The Company uses derivative financial instruments to manage certain exposures to the variability of interest rates and foreign currency exchange rates. The Company's objective is to offset increases and decreases in expenses resulting from these exposures with gains and losses on the derivative contracts, thereby reducing volatility of earnings.

Interest Rate Swaps

        The Company is exposed to interest rate fluctuations in the normal course of its business, including through its Credit Facilities. The interest payments on the facility are calculated using a variable-rate of interest. The Company has entered into an interest rate swap agreement with an original notional value of $72.5 million (equal to the outstanding balance of the Credit Facilities at July 8, 2016) and, effectively, converted the Eurodollar portion of the variable-rate interest payments to fixed-rate interest payments through July 2020. The Company's previous swap agreement with a remaining notional value of $72.5 million was terminated on July 8, 2016.

        The Company estimates the fair values of interest rate swaps based on quoted prices and market observable data of similar instruments. If the Credit Facilities or the interest rate swap agreement is terminated prior to maturity, the fair value of the interest rate swap recorded in accumulated other comprehensive income (loss) may be recognized in the Consolidated Statement of Income based on an assessment of the agreements at the time of termination. The fair value of the interest rate swap terminated on July 8, 2016 was not material. The Company did not discontinue any other cash flow hedges in any of the periods presented.

        The Company measures the effectiveness of its cash flow hedge by comparing the change in fair value of the hedged variable interest payments with the change in fair value of the interest rate swap. The Company recognizes ineffective portions of the hedge, as well as amounts not included in the assessment of effectiveness, in the Consolidated Statement of Income. As of December 31, 2016, no portion of the gains or losses from the Company's hedging instrument was excluded from the assessment of effectiveness. Hedge ineffectiveness was not material for any of the periods presented.

        The Company's derivative financial instrument in cash flow hedging relationships consisted of the following (in thousands):

 
  
 Fair Value 
 
 Balance Sheet Location December 31,
2016
 January 2,
2016
 

Interest rate swap

 Other assets, net $1,808 $92 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

5. Derivative Financial Instruments (Continued)

        The before-tax effect of derivative instruments in cash flow hedging relationships was as follows (in thousands):

 
 Gain (Loss) Recognized in
OCI on Derivatives
(Effective Portion)
during the Year Ended
 Location
of Loss
Reclassified
into Income
 Loss Reclassified
from Accumulated
OCI into Income
(Effective Portion)
during the Year Ended
 
 
 December 31,
2016
 January 2,
2016
 January 3,
2015
  
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Interest rate swaps

 $1,466 $(728)$(799)Interest expense $(249)$(489)$(618)

        The Company expects to reclassify $0.1 million of its interest rate swap gains included in accumulated other comprehensive income (loss) as of December 31, 2016 into earnings in the next 12 months, which would be offset by higher interest payments.

Foreign Currency Forward Contracts

        The Company uses foreign currency forward contracts to manage exposure to foreign exchange risk. As of December 31, 2016 and January 2, 2016, the Company held one foreign currency forward contract denominated in Norwegian Krone with a notional value of $3.9 million and $5.1 million, respectively. The fair value of the contracts was not material as of December 31, 2016 and January 2, 2016. The contract held as of December 31, 2016 has a maturity date of March 29, 2017 and it was not designated as a hedging instrument.

        The before-tax effect of derivative instruments not designated as hedging instruments was as follows (in thousands):

 
 Year Ended  
Gain (Loss) Recognized in Income
 December 31,
2016
 January 2,
2016
 January 3,
2015
 Location

Foreign currency forward contracts

 $(92)$935 $1,075 Other, net

6. Balance Sheet Details

        The following tables show the details of selected Consolidated Balance Sheet items (in thousands):

InventoriesAccounts Receivable, Net

 
 December 28,
2013
 December 29,
2012
 

Work in progress

 $34,503 $42,103 

Finished goods

  10,768  7,476 
      

 $45,271 $49,579 
      
      

Prepaid Expenses and Other Current Assets

 
 December 28,
2013
 December 29,
2012
 

Distributor advances

 $31,839 $21,260 

Other

  15,812  20,177 
      

 $47,651 $41,437 
      
      

Property and Equipment

 
 December 28,
2013
 December 29,
2012
 

Buildings and improvements

 $94,221 $90,900 

Equipment

  51,071  48,219 

Computers and purchased software

  25,556  27,294 

Leasehold interest in ground leases

  23,840  23,840 

Furniture and fixtures

  3,496  3,129 

Leasehold improvements

  7,784  7,587 
      

  205,968  200,969 

Accumulated depreciation

  (73,523) (65,698)
      

 $132,445 $135,271 
      
      
 
 December 31,
2016
 January 2,
2016
 

Accounts receivable

 $75,035 $74,272 

Allowance for doubtful accounts

  (634) (671)

 $74,401 $73,601 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013December��31, 2016 (Continued)

7.6. Balance Sheet Details (Continued)

Inventories

 
 December 31,
2016
 January 2,
2016
 

Work in progress

 $40,755 $36,774 

Finished goods

  18,823  17,121 

 $59,578 $53,895 

Prepaid Expenses and Other Current Assets

 
 December 31,
2016
 January 2,
2016
 

Distributor advances

 $40,205 $36,743 

Other

  21,600  15,915 

 $61,805 $52,658 

Property and Equipment

 
 December 31,
2016
 January 2,
2016
 

Buildings and improvements

 $94,977 $94,607 

Equipment

  57,677  55,072 

Computers and purchased software

  35,492  29,663 

Leasehold interest in ground leases

  23,840  23,840 

Furniture and fixtures

  5,484  4,777 

Leasehold improvements

  10,083  9,204 

  227,553  217,163 

Accumulated depreciation

  (97,994) (86,031)

 $129,559 $131,132 

Accrued Expenses


 December 28,
2013
 December 29,
2012
  December 31,
2016
 January 2,
2016
 

Accrued compensation and benefits

 $24,896 $22,298  $28,781 $27,304 

Other

 21,079 18,112  21,319 24,827 
     

 $45,975 $40,410 
      $50,100 $52,131 
     

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

6. Balance Sheet Details (Continued)

Other Non-current Liabilities


 December 28,
2013
 December 29,
2012
  December 31,
2016
 January 2,
2016
 

Acquisition-related escrow

 $20,010 $ 

Contingent consideration

 12,919  

Acquired unfavorable leases

 11,268 11,794 

Software license accruals

 $14,436 $1,107 

Deferred tax liabilities

 13,119 13,741 

Other

 11,744 8,821  15,136 25,680 
     

 $55,941 $20,615 
      $42,691 $40,528 
     

8.7. Risks and Uncertainties

Financial Instruments

        Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash equivalents, investments, accounts receivable, notes receivable and derivatives. The Company places its cash equivalents and investments primarily in municipal bonds, money market funds, corporate bonds, variable-rate demand notes, corporateU.S. government bonds, auction-rateasset-back securities, certificates of deposit, commercial paper, auction-rate securities and asset backed securities.international government bonds. Concentrations of credit risk with respect to accounts receivable are primarily due to customers with large outstanding balances. The Company's customers that accounted for greater than 10% of accounts receivable consisted of the following:

 
 December 28,
2013
 December 29,
2012
 

Edom Technology

  26% 23%

Arrow Electronics

  10% ** 

Avnet

  **  12%

**
Less than 10% of accounts receivable
 
 December 31,
2016
 January 2,
2016
 

Edom Technology

  19% 17%

Arrow Electronics

  13% 17%

Avnet

  12% 14%

        The Company performs periodic credit evaluations of its customers' financial condition and generally requires no collateral from its customers. The Company provides an allowance for potential credit losses based upon the expected collectibility of such receivables. Losses have not been significant for any of the periods presented.

        The Company holds two notes receivable for $1.5 million and $0.7 million from a privately held company. The notes have a maturity date of the earlier of December 31, 2018 or certain liquidity events and were recorded in other assets, net in the Consolidated Balance Sheet.

        The Company holds an equity investment in another privately held company with a carrying value of $2.8 million as of December 31, 2016. The investment is accounted for under the cost method and was recorded in other assets, net in the Consolidated Balance Sheet.

        As a result of its use of derivative instruments, the Company is exposed to the risk that its counterparties will fail to meet their contractual obligations. To mitigate this counterparty credit risk, the Company has a policy to enter into contracts with only selected major financial institutions. The Company periodically reviews and re-assesses the creditworthiness of such counterparties based on a variety of factors.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

8.7. Risks and Uncertainties (Continued)

Distributor Advances

        On sales to distributors, the Company's payment terms often require the distributor to initially pay amounts owed to the Company for an amount in excess of their ultimate cost. The Company's sales price to its distributors may be higher than the amount that the distributors will ultimately owe the Company because distributors often negotiate price reductions after purchasing the product from the Company and such reductions are often significant. These negotiated price discounts are not granted until the distributor sells the product to the end customer, which may occur after the distributor has paid the original invoice amount to the Company. Payment of invoices prior to receiving an associated discount can have an adverse impact on the working capital of the Company's distributors. Accordingly, the Company has entered into agreements with certain distributors whereby it advances cash to the distributors to reduce the distributor's working capital requirements. The advance amounts are based on the distributor's inventory balance, and are adjusted quarterly. Such amounts are recorded in prepaid expenses and other current assets in the Consolidated Balance Sheet. The terms of these advances are set forth in binding legal agreements and are unsecured, bear no interest on unsettled balances and are due upon demand. The agreements governing these advances can be cancelled by the Company at any time.

Suppliers

        A significant portion of the Company's products are fabricated by Taiwan Semiconductor Manufacturing Co. (TSMC) or its affiliates.TSMC's affiliates and Semiconductor Manufacturing International Corporation (SMIC). The inability of TSMC or SMIC to deliver wafers to the Company on a timely basis could impact the production of the Company's products for a substantial period of time, which could have a material adverse effect on the Company's business, financial condition and results of operations.

Customers

        The Company sells directly to end customers, distributors and contract manufacturers. Although the Company actually sells the products to, and is paid by, distributors and contract manufacturers, the Company refers to the end customer as its customer. None of the Company's contract manufacturers accounted for greater than 10% of revenue during fiscal 2013, 20122016, 2015 or 2011.2014. The Company's end customers and distributors that accounted for greater than 10% of revenue consisted of the following:


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

End Customers

              

Samsung*

 15% 19% 13% ** ** 12%

Distributors

 
 
 
 
 
 
  
 
 
 
 
 
 

Edom Technology

 21% 22% 24% 17% 20% 20%

Avnet

 11% 11% 12% 13% 12% 12%

Macnica

 ** ** 10%

Arrow Electronics

 11% ** ** 

*
Samsung's purchases were across a variety of product areas.

**
Less than 10% of revenue

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

9.8. Acquisitions

Energy MicroMicrium

        On July 1, 2013,October 3, 2016, the Company acquired Energy Micro AS,Micrium, a late-stage private company. Energy Micro designed and developed energy-efficient 32-bit microcontrollers based on ARM Cortex-M architecture. Energy Micro's energy-friendly solutions are designed to enableMicrium is a broad rangesupplier of power-sensitive applicationsreal-time operating system (RTOS) software for the Internet of Things (IoT), including smart energy, home automation, security and portable electronics markets.

IoT. The Company acquired Energy MicroMicrium for approximately $140.6$12.4 million, including: 1) Initial considerationconsisting of $107.4 million; 2) Deferred consideration in the form of a promissory note with an estimated fair value of $19.2 million at the date of acquisition (the promissory note was subsequently exchanged for approximately 0.5 million shares of the Company's restricted stock after a mandatory two-month creditor notice.); and 3) Contingent consideration (the "Earn-Out") with an estimated fair value of $14.0 million at the date of acquisition. The Earn-Out is payable up to approximately $33.3 million based on the extent to which the annual revenue growth rate from certain Energy Micro and Silicon Laboratories products (the "Earn-Out Products") exceeds 25% per year, over a five-year period from fiscal 2014 through 2018 (the "Earn-Out Period"). The Earn-Out is payable on an annual basis and in no event shall exceed $6,666,666 per year, unless revenue from the Earn-Out Products exceeds $400$8.2 million in a single fiscal year during the Earn-Out Period (in which case, the entire Earn-Out amount less any amounts previously paid will become payable). Approximately $20.3cash and $4.2 million of the initialin stock consideration. An additional approximately $1.0 million in stock consideration was held in escrow by the Company as security for breaches of representations and warranties and certain other expressly enumerated matters. The escrow obligation was recorded in other non-current liabilities in the Consolidated Balance Sheet.

        A portion of the Earn-Out (28.76%) is contingent on the continued employment of certain key employees for the three years following the acquisition date (the "Departure Percentage"). The Departure Percentage was accounted for as a transaction separate from the business combination based on its economic substance and will be recorded as post-combination compensation expense in the Company's financial statements during the Earn-Out period.

        The Company believes that this strategic acquisition will accelerate its deployment of energy-friendly solutions across the IoT industries, while further scaling the Company's engineering team. These factors contributed to a purchase price that was in excessover four years. Approximately $1.5 million of the fair valueconsideration was held in escrow as security for breaches of the net assets


Table of Contentswarranties and certain other expressly enumerated matters.


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

9. Acquisitions (Continued)

acquired and, as a result, the Company recorded goodwill. The goodwill is not deductible for tax purposes.        The purchase price was allocated as follows (in thousands):

 
 Amount Weighted-Average
Amortization Period
(Years)

Intangible assets:

     

In-process research and development

 $18,600 Not amortized

Core and developed technology

  29,100 7

Customer relationships

  6,400 8

Trademarks

  1,300 8
     

  55,400  

Cash and cash equivalents

  919  

Other current assets

  6,486  

Goodwill

  98,515  

Other non-current assets

  3,117  

Current liabilities

  (8,000) 

Non-current deferred tax liabilities, net

  (6,288) 

Long-term debt

  (8,434) 

Other non-current liabilities

  (1,133) 
     

Total purchase price

 $140,582  
     
     

follows: intangible assets—$9.5 million; goodwill—$3.4 million; and other net assets—$(0.5) million. A portion of the goodwill is deductible for tax purposes. The allocation of the purchase price is preliminary and subject to change, based onprimarily for the valuation of certain assets and accruals and the finalization of certain income tax matters. Accordingly, adjustments may be made to the values of the assets acquired and liabilities assumed as additional information is obtained about the facts and circumstances that existed at the valuation date.

        Pro forma information related to this acquisition has not been presented because it would not be materially different from amounts reported. The Company recorded approximately $0.3 million of acquisition-related costs in selling, general and administrative expenses during fiscal 2016.

Telegesis

        On November 20, 2015, the Company acquired Telegesis (UK) Limited, a limited liability company incorporated in England and Wales. Telegesis is a supplier of wireless mesh networking modules based on the Company's zigbee and Thread technology, targeting applications in the smart energy, home automation and industrial automation markets. The Company acquired Telegesis for cash consideration of $19.9 million. Approximately $2.9 million of the consideration was held in escrow as security for breaches of warranties and certain other expressly enumerated matters.

        The Company believes that this strategic acquisition accelerates its roadmap for zigbee and Thread modules. This factor contributed to a purchase price that was in excess of the fair value of the net


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

8. Acquisitions (Continued)

assets acquired and, as a result, the Company recorded goodwill. The goodwill is not deductible for tax purposes. The purchase price was allocated as follows (in thousands):

 
 Amount Weighted-Average
Amortization Period
(Years)

Intangible assets:

     

In-process research and development

 $10 Not amortized

Developed technology

  4,980 7

Customer relationships

  2,000 3

Trademarks

  400 3

  7,390  

Cash and cash equivalents

  717  

Other current assets

  4,545  

Goodwill

  9,344  

Other non-current assets

  131  

Current liabilities

  (689) 

Non-current deferred tax liabilities

  (1,508) 

Total purchase price

 $19,930  

        Pro forma information related to this acquisition has not been presented because it would not be materially different from amounts reported. The Company recorded approximately $0.5 million of acquisition-related costs in selling, general and administrative expenses during fiscal 2015.

Bluegiga

        On January 30, 2015, the Company acquired Bluegiga Technologies Oy, a private company based in Finland. Bluegiga is a provider of Bluetooth Smart, Bluetooth Classic and Wi-Fi modules and software stacks for a multitude of applications in the IoT, industrial automation, consumer electronics, automotive, retail, residential, and health and fitness markets. The Company acquired Bluegiga for cash consideration of approximately $58.0 million.

        The Company believes that this strategic acquisition will accelerate its entry into the wireless module market. This factor contributed to a purchase price that was in excess of the fair value of the


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

8. Acquisitions (Continued)

net assets acquired and, as a result, the Company recorded goodwill. The goodwill is not deductible for tax purposes. The purchase price was allocated as follows (in thousands):

 
 Amount Weighted-Average
Amortization Period
(Years)

Intangible assets:

     

In-process research and development

 $5,710 Not amortized

Developed technology

  12,190 8

Customer relationships

  6,670 4

Trademarks

  880 3

  25,450  

Cash and cash equivalents

  1,132  

Other current assets

  6,156  

Goodwill

  34,597  

Other non-current assets

  208  

Current liabilities

  (3,289) 

Non-current deferred tax liabilities

  (3,780) 

Long-term debt

  (2,232) 

Other non-current liabilities

  (220) 

Total purchase price

 $58,022  

        In-process research and development (IPR&D) represents acquired technology that had not achieved technological feasibility as of the acquisition date and had no alternative future use. The IPR&D recorded in connection with the acquisition of Energy MicroBluegiga consisted primarily of a multi-protocol wireless RF solution.Bluetooth Smart Ready and Bluetooth Smart modules and software stacks. The fair value of this technologythese technologies was determined using the income approach. The discount rate applicable to the cash flows was 13.0%16.1%. The remaining research and development efforts include additional design, integration and testing. The significant risks associated with the successful completion of this project include the Company's potential inability to finish the product designs, produce working models and gain customer acceptance.

        Pro forma information related to this acquisition has not been presented because it would not be materially different from amounts reported. The Company recorded approximately $2.4$1.2 million of acquisition-related costs in selling, general and administrative expenses during fiscal 2013.2015.

EmberEnergy Micro

        On July 3, 2012,1, 2013, the Company acquired Ember Corporation, a privately held company. Ember's products integrate high-performance, low-power 2.4 GHz wireless ICsEnergy Micro. In the first quarter of 2015, the Company made the following payments in connection with reliablethe Energy Micro acquisition: (a) approximately $20.0 million was paid for the release of the holdback; and scalable software(b) approximately $6.3 million was paid for the first annual period of the earn-out. Approximately $1.8 million of the earn-out payment was recorded as compensation expense during fiscal 2014. The remaining approximately $4.5 million of the earn-out payment represented additional consideration.

        On March 11, 2016, the Company entered into a flexiblean agreement with Energy AS, the former parent of Energy Micro. The agreement settled the amount of the earn-out to be paid for fiscal 2015 through 2018. The total settlement amount was approximately $16.0 million (in lieu of potential payments of up to $26.7 million) and robust networking platform.was paid on May 11, 2016. The Company acquired Ember forsettlement amount represented approximately $11.4 million of additional consideration and approximately $4.6 million of compensation expense (of


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

9.8. Acquisitions (Continued)

which approximately $79.0$2.7 million including contingent consideration with an estimated fair value of $4.0 million at the date of acquisition.

        The Company believes that this strategic acquisition provides it with the technology and software expertise required to enable the low-power mesh sensor networks being deployed today in a wide range of residential, commercial and industrial applications. These factors contributed to a purchase price that was in excess of the fair value of the net assets acquired and, as a result, the Company recorded goodwill. The goodwill is not deductible for tax purposes. The purchase price was allocated as follows (in thousands):

 
 Amount Weighted-Average
Amortization Period
(Years)

Intangible assets:

     

In-process research and development

 $14,810 Not amortized

Developed technology

  17,800 11

Customer relationships

  5,620 9

Trademarks

  910 12
     

  39,140  

Cash and cash equivalents

  3,115  

Accounts receivable

  1,928  

Inventories

  4,749  

Other current assets

  324  

Goodwill

  14,777  

Non-current deferred tax assets, net

  16,449  

Other non-current assets

  1,776  

Current liabilities

  (3,287) 
     

Total purchase price

 $78,971  
     
     

        The IPR&D recorded in connection with the acquisition of Ember consisted of a low-power RF transceiver. The fair value of this technology was determined using the income approach. The discount rate applicable to the cash flows was 12.5%.

        Pro forma information related to this acquisition has not been presented because it would not be materially different from amounts reported. Acquisition-related costs were not significant.

Corporate Headquarters Buildings

        The Company leased facilities at 400 W. Cesar Chavez ("400 WCC") and 200 W. Cesar Chavez ("200 WCC") in Austin, Texas for its corporate headquarters. During the terms of the leases, the Company had options to purchase the buildings for approximately $44.3 million for 400 WCC and $50.1 million for 200 WCC. In September 2012, the Company exercised such options and purchased the facilities.

        The buildings are located on land which is leased through 2099 from a third party. The rents for these ground leases were prepaid for the term of the leases by the previous lessee. The first floor of


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

9. Acquisitions (Continued)

each building was leased to the same third party for the term of the ground leases. The base rents for the first floor leases were prepaid to the previous owner of the buildings. Portions of the remaining floors were also leased to other tenants.

        The Company determined that the purchase of the facilities represented a business combination. Under the acquisition method of accounting, the assets acquired and liabilities assumed were recorded at their fair values as of the date of the acquisition. The purchase price was allocated as follows (in thousands):

 
 Amount 

Buildings

 $90,900 

Leasehold interest in ground leases

  23,840 

Acquired unfavorable leases

  (11,925)

Lease-related charges

  (8)

Net gain on purchase

  (8,457)
    

Total purchase price

 $94,350 
    
    

        The buildings and leasehold interest in ground leases will be depreciated on a straight-line basis over their estimated useful lives of 40 years and 86 years, respectively. Acquired unfavorable leases represent the difference between contractual minimum rental payments due under previously-existing leases in each building and the market rates of those same leases. This amount was recorded in other non-current liabilitiesfiscal 2016 and approximately $1.9 million was recorded in the Consolidated Balance Sheet and will be amortized to rental income over the estimated terms of the leases.

fiscal 2015). The purchase of the facilities resultedcompensation expense recorded in fiscal 2016 was offset in part by a net gain of approximately $8.5$2.7 million which was recorded in selling, general and administrative expenses into adjust the Consolidated Statement of Income. The gain resulted primarily because the assets acquired and liabilities assumed were recorded at their fair values as of the date of the acquisition, which was substantially higher than the purchase prices of the facilities. The purchase prices were fixed at the beginning of the two leases in March 2006 and March 2008. While market prices for such facilities increased over the terms of the leases, the purchase prices remained the same.

Spectra Linear

        On January 25, 2011, the Company acquired Spectra Linear, Inc., a late-stage private company offering integrated timing solutions. The Company acquired Spectra Linear for approximately $28.6 million, including contingent consideration with an estimated fair value of $1.0 million at the date of acquisition. In addition, the Company assumed approximately $8.0 million of Spectra Linear net liabilities in connection with the acquisition.

        The Company paid an additional approximately $4.5 million of consideration to certain Spectra Linear employees in connection with an agreement between the employees and Spectra Linear. This agreement provided that upon the sale of Spectra Linear, a portion of the proceeds would be paidearn-out to such employees as bonuses. The agreement was accounted for as a transaction separate fromfair value due to the business combination based on its economic substance and was recorded as post-combination compensation expense in the Company's financial statements during fiscal 2011.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)
settlement.

9. Acquisitions (Continued)

        The Company believes that the acquisition adds a broad family of timing ICs that will enable it to accelerate penetration in high-volume applications, while further scaling the Company's engineering team. These factors contributed to a purchase price that was in excess of the fair value of the net assets acquired and, as a result, the Company recorded goodwill. The goodwill is not deductible for tax purposes. The purchase price was allocated as follows (in thousands):

 
 Amount Weighted-Average
Amortization Period
(Years)
 

Intangible assets:

       

Core and developed technology

 $16,560  10 

Customer relationships

  1,400  10 
       

  17,960    

Accounts receivable

  1,759    

Inventories

  1,199    

Other current assets

  1,658    

Goodwill

  4,097    

Deferred tax assets—non-current

  12,316    

Other non-current assets

  597    

Notes payable—current portion

  (4,641)   

Current liabilities

  (3,112)   

Non-current liabilities

  (3,254)   
       

Total purchase price

 $28,579    
       
       

        Pro forma information related to this acquisition has not been presented because it would not be materially different from amounts reported. Acquisition-related costs were not significant.

10. Goodwill and Other Intangible Assets

Goodwill

        The following summarizes the activity in goodwill for the years ended December 28, 201331, 2016 and December 29, 2012January 2, 2016 (in thousands):


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
  December 31,
2016
 January 2,
2016
 

Beginning balance

 $130,265 $115,489  $272,722 $228,781 

Additions due to business combinations

 98,516 14,776  3,408 43,941 
     

Ending balance

 $228,781 $130,265  $276,130 $272,722 
 ��   
     

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

10. Goodwill and Other Intangible Assets (Continued)

Other Intangible Assets

        The gross carrying amount and accumulated amortization of other intangible assets are as follows (in thousands):


  
 December 28, 2013 December 29, 2012   
 December 31, 2016 January 2, 2016 

 Weighted-Average
Amortization
Period
(Years)
  Weighted-Average
Amortization
Period
(Years)
 

 Gross
Amount
 Accumulated
Amortization
 Gross
Amount
 Accumulated
Amortization
  Gross
Amount
 Accumulated
Amortization
 Gross
Amount
 Accumulated
Amortization
 

Intangible assets:

                       

Subject to amortization:

                       

Core and developed technology

 9 $138,340 $(41,782)$95,420 $(30,145) 9 $157,321 $(70,181)$170,541 $(70,135)

Customer relationships

 9  14,500 (2,330) 8,100 (1,057) 7 24,970 (11,356) 23,170 (7,259)

Patents

 6  3,000 (750) 3,000 (250) 6 3,000 (2,250) 3,022 (1,763)

Trademarks

 10  2,210 (195) 910 (38) 7 3,690 (1,629) 3,490 (952)
           

 9  158,050 (45,057) 107,430 (31,490) 9 188,981 (85,416) 200,223 (80,109)

Not subject to amortization:

 

 

  
 
 
 
 
 
 
 
  

 

 
 
 
 
 
 
 
 
 

In-process research and development

 Not amortized  18,600  14,810   Not amortized   1,240  
           

Total intangible assets

   $176,650 $(45,057)$122,240 $(31,490)   $188,981 $(85,416)$201,463 $(80,109)
           
           

        Gross intangible assets increased $55.4decreased $12.5 million in fiscal 20132016 due to the removal of $22.0 million of fully amortized assets. This decrease was offset by $9.5 million in assets added due to the acquisition of Energy Micro. This increase was offset by the removalMicrium.


Table of $1.0 million of fully amortized assets.Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

9. Goodwill and Other Intangible Assets (Continued)

        Amortization expense related to intangible assets for fiscal 2013, 20122016, 2015 and 20112014 was $14.6$27.3 million, $10.7$26.5 million and $9.9$17.9 million, respectively. The estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years is as follows (in thousands):

Fiscal Year
  
   
 

2014

 $17,060 

2015

 16,669 

2016

 16,019 

2017

 15,052  $24,957 

2018

 14,309  22,890 

2019

 17,192 

2020

 14,697 

2021

 10,308 

11.10. Debt

        On July 31, 2012, the Company and certain of its domestic subsidiaries (the "Guarantors") entered into a $230 million five-year Credit Agreement (the "Agreement""Credit Agreement"). The Agreement consists, which consisted of a $100 million Term Loan Facility and a $130 million Revolving Credit Facility (collectively, the "Credit Facilities").

        The On July 24, 2015, the Company and the Guarantors amended the Credit Agreement (the "Amended Credit Agreement") in order to, among other things, increase the borrowing capacity under the Revolving Credit Facility to $300 million, eliminate the Term Loan Facility provides for quarterly principal amortization (equaland extend the maturity date to 5% offive years from the principal in each ofclosing date. On July 24, 2015, the first two yearsCompany borrowed $82.5 million under the Amended Credit Agreement and 10% of the principal in each of the next three years) withpaid off the remaining balance payable upon the maturity date.of its Term Loan Facility.

        The RevolvingAmended Credit FacilityAgreement includes a $25 million


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

11. Debt (Continued)

letter of credit sublimit and a $10 million swingline loan sublimit. The Company also has an option to increase the size of the Revolving Credit Facilityborrowing capacity by up to an aggregate of $50$200 million in additional commitments, subject to certain conditions. On September 27, 2012, the Company borrowed $100 million under the Term Loan Facility. To date, the Company has not borrowed under the Revolving Credit Facility.

        The Term Loan Facility and Revolving Credit Facility, other than swingline loans, will bear interest at LIBORthe Eurodollar rate plus an applicable margin or, at the option of the Company, a base rate (defined as the highest of the Bank of AmericaWells Fargo prime rate, the Federal Funds rate plus 0.50% and a daily rate equal to one-month LIBORthe Eurodollar Base Rate plus 1.00%) plus an applicable margin. Swingline loans accrue interest at a per annum rate based on the base rate plus the applicable margin for base rate loans. The applicable margins for the LIBOREurodollar rate loans range from 1.50%1.25% to 2.50%2.00% and for base rate loans range from 0.50%0.25% to 1.50%1.00%, depending in each case, on the leverage ratio as defined in the Agreement.

        The Company also pays a commitment fee on the unused amount of the Revolving Credit Facility.

        In connection with the closing of theAmended Credit Agreement the Company entered into a security and pledge agreement. Under the security and pledge agreement, the Company pledged equity securities of certain of its subsidiaries, subject to exceptions and limitations. The Credit Facilities containcontains various conditions, covenants and representations with which the Company must be in compliance in order to borrow funds and to avoid an event of default, including financial covenants that the Company must maintain a leverage ratio (funded debt/EBITDA) of no more than 2.53.00 to 1 and a minimum fixed charge coverage ratio (EBITDA/debtinterest payments, income taxes and capital expenditures) of no less than 1.501.25 to 1. As of December 28, 2013,31, 2016, the Company was in compliance with all covenants of the Amended Credit Facilities.

        As of December 28, 2013,Agreement. The Company's obligations under the remaining contractual maturitiesAmended Credit Agreement are guaranteed by the Guarantors and are secured by a security interest in substantially all assets of the Term Loan Facility were as follows (in thousands):Company and the Guarantors.


Table of Contents

Fiscal Year
  
 

2014

 $7,500 

2015

  10,000 

2016

  10,000 

2017

  67,500 
    

Total

 $95,000 
    
    


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

10. Debt (Continued)

Interest Rate Swap Agreement

        In connection with the $100 million borrowed underoutstanding balance of the Term Loan Facility,Credit Facilities at July 8, 2016, the Company entered into an interest rate swap agreement as a hedge against the LIBOREurodollar portion of such variable interest payments. Under the terms of the swap agreement, the Company effectively converted the LIBOREurodollar portion of the interest on the Term Loan FacilityCredit Facilities to a fixed interest rate of 0.764%0.875% through the maturity date.July 2020. As of December 28, 2013,31, 2016, the combined interest rate onof the Term Loan FacilityCredit Facilities (which includes an applicable margin) and the interest rate swap was 2.514%2.375%. See Note 5,Derivative Financial Instruments, for additional information.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

12.11. Stockholders' Equity

Common Stock

        The Company issued 1.61.1 million shares of common stock during fiscal 2013,2016, including approximately 0.50.1 million shares issued in connection with the acquisition of Energy Micro.Micrium.

Share Repurchase Programs

        The Board of Directors authorized the following share repurchase programs (in thousands):

Program Authorization Date
 Program
Termination
Date
 Program
Amount
 
January 2014 January 2015 $100,000 
January 2013 January 2014 $50,000 
April 2012 January 2013 $100,000 
October 2011 April 2012 $50,000 
July 2010 August 2011 $150,000 
Program Authorization Date
 Program
Termination
Date
 Program
Amount
 

January 2017

 December 2017 $100,000 

August 2015

 December 2016 $100,000 

October 2014

 December 2015 $100,000 

January 2014

 January 2015 $100,000 

        These programs allow for repurchases to be made in the open market or in private transactions, including structured or accelerated transactions, subject to applicable legal requirements and market conditions. The Company repurchased 0.70.9 million shares, 1.7 million shares and 3.21.7 million shares of its common stock for $26.0$40.5 million, $62.0$71.4 million and $110.1$71.7 million and during fiscal 2013, 20122016, 2015 and 2011,2014, respectively. These shares were retired upon repurchase.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

12.11. Stockholders' Equity (Continued)

Accumulated Other Comprehensive LossIncome (Loss)

        The components of accumulated other comprehensive loss,income (loss), net of taxes, were as follows (in thousands):


 Unrealized Gain
(Loss) on Cash
Flow Hedge
 Net Unrealized
Losses on Available-
For-Sale Securities
 Total  Unrealized Gain
on Cash Flow
Hedge
 Net Unrealized
Losses on
Available-
For-Sale Securities
 Total 

Balance at January 1, 2011

 $(2,477)$(1,171)$(3,648)

Balance at December 28, 2013

 $333 $(1,017)$(684)

Other comprehensive income (loss) before reclassifications

 (276) 3 (273) 
(520

)
 
720
 
200
 

Amount reclassified from accumulated other comprehensive loss

 1,454  1,454 
       

Amount reclassified from accumulated other comprehensive income (loss)

 402  402 

Net change for the period

 1,178 3 1,181  (118) 720 602 
       

Balance at December 31, 2011

 (1,299) (1,168) (2,467)

Balance at January 3, 2015

 
215
 
(297

)
 
(82

)

Other comprehensive income (loss) before reclassifications

 (621) 650 29  
(473

)
 
(276

)
 
(749

)

Amount reclassified from accumulated other comprehensive loss

 1,492  1,492 
       

Amount reclassified from accumulated other comprehensive income (loss)

 318 6 324 

Net change for the period

 871 650 1,521  (155) (270) (425)
       

Balance at December 29, 2012

 (428) (518) (946)

Balance at January 2, 2016

 
60
 
(567

)
 
(507

)

Other comprehensive income (loss) before reclassifications

 397 (348) 49  
953
 
(116

)
 
837
 

Amount reclassified from accumulated other comprehensive loss

 364 (151) 213 
       

Amount reclassified from accumulated other comprehensive income (loss)

 162  162 

Net change for the period

 761 (499) 262  1,115 (116) 999 

Balance at December 28, 2013

 $333 $(1,017)$(684)
       

Balance at December 31, 2016

 
$

1,175
 
$

(683

)

$

492
 
       

Reclassifications From Accumulated Other Comprehensive LossIncome (Loss)

        The following table summarizes the effect on net income from reclassifications out of accumulated other comprehensive income (loss) (in thousands):


 Year ended  Year ended 
Reclassification (in thousands)
 December 28,
2013
 December 29,
2012
 December 31,
2011
 
Reclassification
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Losses on cash flow hedges to:

              

Rent expense

 $ $(2,295)$(2,237)

Interest expense

 (560)    $(249)$(489)$(618)

Gains on available-for-sales securities to:

 
 
 
 
 
 
 

Gains (losses) on available-for-sales securities to:

 
 
 
 
 
 
 

Interest income

 232     (10)  
       

 (328) (2,295) (2,237) (249) (499) (618)

Income tax benefit

 
115
 
803
 
783
  
87
 
175
 
216
 
       

Total reclassifications

 $(213)$(1,492)$(1,454) $(162)$(324)$(402)
       
       

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

12.11. Stockholders' Equity (Continued)

Income Tax Allocated to the Components of Other Comprehensive Income (Loss)

        The income tax effects of the components of other comprehensive income (loss) were as follows (in thousands):


 Year ended  Year ended 
Income tax (expense) benefit on:
 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Net changes to available-for-sale securities:

              

Unrealized gains (losses) arising during the period

 $187 $(350)$(1) $63 $149 $(387)

Reclassification for gains included in net income

 81   

Reclassification for losses included in net income

  (4)  

Net changes to cash flow hedges:

 
 
 
 
 
 
  
 
 
 
 
 
 

Unrealized gains (losses) arising during the period

 (214) 335 148  (513) 255 279 

Reclassification for losses included in net income

 (196) (803) (783) (87) (171) (216)
       

Other comprehensive income

 
$

(142

)

$

(818

)

$

(636

)
        $(537)$229 $(324)
       

13.12. Stock-Based Compensation

        In fiscal 2009, the stockholders of the Company approved the 2009 Stock Incentive Plan (the "2009 Plan") and the 2009 Employee Stock Purchase Plan (the "2009 Purchase Plan"). TheIn fiscal 2014, the stockholders of the Company approved amendments to both the 2009 Plan is currently effective, and has a term of 10 years from the shareholders' approval date. The 2009 Purchase Plan became effective on April 30, 2010.Plan. The amendments authorized additional shares of common stock for issuance, to comply with changes in applicable law, improve the Company's corporate governance and to implement other best practices. The amended plans are currently effective.

2009 Stock Incentive Plan

        Under the 2009 Plan, the following may be granted: stock options, stock appreciation rights, performance shares, performance stock units, restricted stock units (RSUs), restricted stock awards (RSAs), performance-based awards and other awards (collectively, all such grants are referred to as "awards"). The amendment of the shares of common stock reserved for issuance in the 2009 Plan created two share pools—Prior Pool and New Pool. Awards of stock options and stock appreciation rights each deduct one share from the 2009 Plan shares available for issuance for each share granted, and full value awards (awards other than for which the participant is required to pay at least the fair market value of the underlying shares on the date of grant) deduct 1.55 shares from the 2009 Plan shares available for issuance for each share granted.granted under the Prior Pool. Awards of stock options, stock appreciation rights, and full value awards each deduct one share from the 2009 Plan shares available for issuance for each share granted under the New Pool. Awards granted under the 2009 Plan generally contain vesting provisions ranging from three to four years. The exercise price of stock options offered under the 2009 Plan may not be less than 100% of the fair market value of a share of our common stock on the date of grant. To the extent awards granted under the 2009 Plan terminate, expire or lapse for any reason, or are settled in cash, shares subject to such awards will again be available for grant.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

12. Stock-Based Compensation (Continued)

2000 Stock Incentive Plan

        In fiscal 2000, the Company's Board of Directors and stockholders approved the 2000 Plan. The 2000 Plan contains programs for (i) the discretionary granting of stock options to employees, non-employee board members and consultants for the purchase of shares of the Company's common stock, (ii) the discretionary issuance of common stock directly (as granted under direct issuance shares in RSAs and RSUs), (iii) the granting of special below-market stock options to executive officers and


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

13. Stock-Based Compensation (Continued)

other highly compensated employees of the Company for which the exercise price can be paid using payroll deductions and (iv) the automatic issuance of stock options to non-employee board members. The discretionary issuance of common stock, RSUs and stock options generally contain vesting provisions ranging from three to eight years. If permitted by the Company, stock options can be exercised immediately and, similar to the direct issuance shares, are subject to repurchase rights which generally lapse in accordance with the vesting schedule. The repurchase rights provide that upon certain defined events, the Company can repurchase unvested shares at the price paid per share. The term of each stock option is no more than ten years from the date of grant.

Stock Grants and Modifications

        The Company granted to its employees 1.11.3 million, 0.80.9 million and 0.8 million shares of full value awards and no0.2 million, 0.0 million, and 0.0 million stock options from the 2009 Plan during fiscal 2013, 20122016, 2015 and 2011,2014, respectively.

        The Company recorded $1.9$0.9 million and $2.3 million in selling, general and administrative expense during fiscal 20122016 and 2015, respectively, in connection with the modifications toof certain stockequity awards. The Company accelerated the vesting of certain RSUs and Market Stock Units (MSUs) and extended the exercise period of stock optionsmodifications were pursuant to a separation agreement between the Companythree employee terminations in fiscal 2016 and its former Chief Executive Officer (CEO).two employee terminations in fiscal 2015. There were no other significant modifications made to any stock grants during fiscal 2013, 20122016, 2015 or 2011.2014.

        Included in the full value awards granted under the 2009 Plan in fiscal 2013, 20122016, 2015 and 20112014 were a total of 13265 thousand, 11089 thousand and 5576 thousand market-based stock awards, respectively. The awards, also known as MSUs, provide the rights to acquire a number of shares of common stock for no cash consideration based upon achievement of specified levels of market conditions. The requisite service period for these MSUs is also the vesting period, which is generally three years. The performance criteria of the MSUs measure the difference between the total stockholders' return of the Company against that of the Philadelphia Semiconductor Sector Total Return Index.

        Also included in the full value awards granted under the 2009 Plan during fiscal 2016 were 65 thousand performance-based stock awards. The awards, also known as PSUs, provide for the rights to acquire a number of shares of common stock for no cash consideration based upon the achievement of specified revenue objectives during the year. The requisite service period for these PSUs is approximately three years from the date of grant.

2009 Employee Stock Purchase Plan

        The rights to purchase common stock granted under the 2009 Purchase Plan are intended to be treated as either (i) purchase rights granted under an "employee stock purchase plan," as that term is defined in Section 423(b) of the Internal Revenue Code (the "423(b) Plan"), or (ii) purchase rights


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

12. Stock-Based Compensation (Continued)

granted under an employee stock purchase plan that is not subject to the terms and conditions of Section 423(b) of the Internal Revenue Code (the "Non-423(b) Plan"). The Company will retain the discretion to grant purchase rights under either the 423(b) Plan or the Non-423(b) Plan. Eligible employees may purchase a limited number of shares of the Company's common stock at no less than 85% of the fair market value of a share of common stock at prescribed purchase intervals during an offering period. Each offering period will be comprised of a series of one or more successive and/or overlapping purchase intervals and has a maximum term of 24 months. During fiscal 2013, 20122016, 2015 and 2011,2014, the Company issued 190224 thousand, 181210 thousand and 169204 thousand shares, respectively, under the 2009 Purchase Plan to its employees. The weighted-average fair value for purchase rights granted in fiscal 20132016 under the 2009 Purchase Plan was $9.34$13.43 per share.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

13. Stock-Based Compensation (Continued)

Accounting for Stock-Based Compensation

        Stock-based compensation costs are based on the fair values on the date of grant for stock awards and stock options and on the date of enrollment for the employee stock purchase plans, estimated by using the Black-Scholes option-pricing model.plans. The fair values of stock awards (such as RSUs, PSUs and RSUs equalRSAs) are estimated based on their intrinsic value on the date of grant.values. The fair values of market-based performance awards generallyMSUs are estimated using a Monte Carlo simulation based onsimulation. The fair values of stock options and employee stock purchase plans are estimated using the date of grant.Black-Scholes option-pricing model.

        The Black-Scholes valuation calculation requires the Company to estimate key assumptions such as future stock price volatility, expected terms, risk-free rates and dividend yield. Expected stock price volatility is based upon a combination of both historical volatility and implied volatility derived from traded options on the Company's stock in the marketplace. Expected term is derived from an analysis of historical exercises and remaining contractual life of options. The risk-free rate is based on the U.S. Treasury yield curve in effect at the time of grant. The Company has never paid cash dividends and does not currently intend to pay cash dividends, thus it has assumed a 0% dividend yield.

        The Monte Carlo simulation used to calculate the fair value of the MSUs simulates the present value of the potential outcomes of future stock prices of the Company and the Philadelphia Semiconductor Sector Total Return Index over the requisite service period. The projection of stock prices are based on the risk-free rate of return, the volatilities of the stock price of the Company and the Index, and the correlation of the stock price of the Company with the Index.

        The Company must estimate potential forfeitures of stock grants and adjust compensation cost recorded accordingly. The estimate of forfeitures will be adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from such estimates. Changes in estimated forfeitures are recognized through a cumulative catch-up adjustment in the period of change and will also impact the amount of stock-based compensation expense to be recognized in future periods.

        The fair values of stock options and RSUs are amortized as compensation expense on a straight-line basis over the vesting period of the grants. The fair values of RSAs are fully expensed in the period of grant, when shares are immediately issued with no vesting restrictions. The fair values of MSUs are amortized as compensation expense on a straight-line basis over the performance and service periods of the grants. The fair values of PSUs are amortized as compensation expense on a straight-line basis over the performance period when the performance is probable of achievement, and over the remaining service periods thereafter. Compensation expense recognized is shown in the operating activities section of the Consolidated Statements of Cash Flows.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

12. Stock-Based Compensation (Continued)

        The fair values estimated from the Black-Scholes option-pricing model for ESPP and stock options granted were calculated using the following assumptions:


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
 

2009 Employee Stock Purchase Plan:

       
Employee Stock Purchase Plan
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Expected volatility

 27% 38% 27% 30% 31% 28%

Risk-free interest rate %

 0.1% 0.2% 0.2% 0.6% 0.2% 0.2%

Expected term (in months)

 7 15 11  15 8 15 

Dividend yield

        



Year Ended
Stock Options
December 31,
2016
January 2,
2016
January 3,
2015

Expected volatility

32%

Risk-free interest rate %

1.3%

Expected term (in years)

5.4

Dividend yield

        The fair values estimated from Monte Carlo simulation for MSUs were calculated using the following assumptions:

 
 Year Ended 
MSUs
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Expected volatility

  30% 31% 33%

Risk-free interest rate %

  0.9% 1.0% 0.7%

Expected term (in years)

  2.9  2.9  2.8 

Dividend yield

       

        A summary of stock-based compensation activity with respect to fiscal 2016 follows:

Stock Options
 Shares
(000s)
 Weighted-
Average
Exercise
Price
 Weighted-Average
Remaining
Contractual Term
(In Years)
 Aggregate
Intrinsic
Value
(000s)
 

Outstanding at January 2, 2016

  212 $34.64       

Granted

  173 $40.39       

Exercised

  (137)$33.08       

Cancelled or expired

  (20)$57.26       

Outstanding at December 31, 2016

  228 $37.95  7.14 $6,165 

Vested at December 31, 2016 and expected to vest

  
209
 
$

37.74
  
6.97
 
$

5,708
 

Exercisable at December 31, 2016

  
55
 
$

30.31
  
0.96
 
$

1,908
 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

13.12. Stock-Based Compensation (Continued)

        A summary of stock-based compensation activity with respect to fiscal 2013 follows:

Stock Options
 Shares
(000s)
 Weighted-
Average
Exercise
Price
 Weighted-Average
Remaining
Contractual Term
(In Years)
 Aggregate
Intrinsic
Value
(000s)
 

Outstanding at December 29, 2012

  1,696 $35.86       

Exercised

  (480)$34.72       

Cancelled or expired

  (127)$46.87       
          

Outstanding at December 28, 2013

  1,089 $35.09  1.96 $9,688 

Vested at December 28, 2013 and expected to vest

  
1,089
 
$

35.09
  
1.96
 
$

9,688
 

Exercisable at December 28, 2013

  
1,089
 
$

35.09
  
1.96
 
$

9,688
 
RSAs and RSUs
 Shares
(000s)
 Weighted-
Average
Purchase
Price
 Weighted-Average
Remaining
Vesting Term
(In Years)
 Aggregate
Intrinsic
Value
(000s)
 

Outstanding at January 2, 2016

  1,554 $       

Granted

  1,169 $       

Vested or issued

  (871)$       

Cancelled or forfeited

  (163)$       

Outstanding at December 31, 2016

  1,689 $  1.05 $109,807 

Outstanding at December 31, 2016 and expected to vest

  
1,568
 
$

  
1.05
 
$

101,940
 

 

RSAs, RSUs and MSUs
 Shares
(000s)
 Weighted-
Average
Purchase
Price
 Weighted-Average
Remaining
Vesting Term
(In Years)
 Aggregate
Intrinsic
Value
(000s)
 

Outstanding at December 29, 2012

  1,708 $       

Granted

  1,118 $       

Issued

  (553)$       

Cancelled or expired

  (192)$       
          

Outstanding at December 28, 2013

  2,081 $  1.25 $88,135 

Outstanding at December 28, 2013 and expected to vest

  
1,900
 
$

  
1.25
 
$

80,471
 
PSUs and MSUs
 Shares
(000s)
 Weighted-
Average
Purchase
Price
 Weighted-Average
Remaining
Vesting Term
(In Years)
 Aggregate
Intrinsic
Value
(000s)
 

Outstanding at January 2, 2016

  250 $       

Granted

  131 $       

Cancelled or forfeited

  (152)$       

Outstanding at December 31, 2016

  229 $  1.41 $14,855 

Outstanding at December 31, 2016 and expected to vest

  
184
 
$

  
1.41
 
$

11,928
 

        The following summarizes the Company's weighted average fair value at the date of grant:

 
 Year Ended 
 
 December 28,
2013
 December 29,
2012
 December 31,
2011
 

Per grant of RSAs, RSUs and MSUs

 $41.69 $43.82 $44.73 
 
 Year Ended 
 
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Per grant of RSAs and RSUs

 $40.55 $49.14 $47.93 

Per grant of PSUs and MSUs

 $32.23 $48.36 $60.08 

        The following summarizes the Company's stock-based payment and stock option values (in thousands):


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Intrinsic value of stock options exercised

 $4,198 $9,064 $8,622  $2,560 $6,612 $5,674 

Intrinsic value of RSAs and RSUs that vested

 $23,649 $40,105 $38,769  $36,502 $45,298 $32,138 

Grant date fair value of RSAs and RSUs that vested

 $24,026 $31,215 $29,488  $39,853 $41,072 $29,668 

        The Company had approximately $51.2 million of total unrecognized compensation costs related to stock awards at December 28, 2013 that are expected to be recognized over a weighted-average period


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

13. Stock-Based Compensation (Continued)

of 2.1 years. There were no significant stock-based compensation costs capitalized into assets in any of the periods presented.

        The Company received cash of $15.3$2.2 million for the issuance of common stock, net of shares withheld for taxes, during fiscal 2013.2016. The Company issues shares from the shares reserved under its stock plans upon the exercise of stock options, issuance of RSAs, vesting of RSUs and MSUs, and purchases through employee stock purchase plans. The Company does not currently expect to repurchase shares from any source to satisfy such obligation.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

12. Stock-Based Compensation (Continued)

        The following table presents details of stock-based compensation costs recognized in the Consolidated Statements of Income (in thousands):


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Cost of revenues

 $952 $1,206 $1,319  $1,070 $960 $775 

Research and development

 14,530 12,602 14,872  19,573 19,451 18,521 

Selling, general and administrative

 15,318 17,368 19,924  18,985 22,380 19,771 
       

 30,800 31,176 36,115  39,628 42,791 39,067 

Income tax benefit

 2,633 4,911 3,957  8,496 9,264 4,024 
       

 $28,167 $26,265 $32,158 
        $31,132 $33,527 $35,043 
       

        The Company had approximately $52.1 million of total unrecognized compensation costs related to granted stock options and awards as of December 31, 2016 that are expected to be recognized over a weighted-average period of approximately 2.2 years. There were no significant stock-based compensation costs capitalized into assets in any of the periods presented.

        As of December 28, 2013,31, 2016, the Company had reserved shares of common stock for future issuance as follows (in thousands):

2000 Stock Incentive Plan

  1,09255 

2009 Stock Incentive Plan

  4,9131,935 

2009 Employee Stock Purchase Plan

  636
447 

Total shares reserved

  6,6412,437 

14.13. Employee Benefit Plan

        The Company maintains a defined contribution or 401(k) Plan for its qualified U.S. employees. Participants may contribute a percentage of their compensation on a pre-tax basis, subject to a maximum annual contribution imposed by the Internal Revenue Code. The Company may make discretionary matching contributions as well as discretionary profit-sharing contributions to the 401(k) Plan. The Company contributed $3.0$3.4 million, $2.9$3.3 million and $2.7$3.2 million to the 401(k) Plan during fiscal 2013, 20122016, 2015 and 2011,2014, respectively.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

15.14. Commitments and Contingencies

Operating Leases

        The Company leases certain facilities under operating lease agreements that expire at various dates through 2022.2025. Some of these arrangements contain renewal options and require the Company to pay taxes, insurance and maintenance costs.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

14. Commitments and Contingencies (Continued)

        Rent expense under operating leases was $4.7 million, $4.6 million and $4.2 million $4.4 million and $4.5 million for fiscal 2013, 20122016, 2015 and 2011,2014, respectively. The minimum annual future rentals under the terms of these leases as of December 28, 201331, 2016 are as follows (in thousands):

Fiscal Year
  
   
 

2014

 $4,232 

2015

 3,704 

2016

 3,058 

2017

 2,350  $5,139 

2018

 1,449  3,852 

2019

 2,700 

2020

 2,432 

2021

 2,286 

Thereafter

 682  4,638 
   

Total minimum lease payments

 $15,475  $21,047 
   
   

Litigation

    Patent Litigation

        On January 21, 2014, Cresta Technology Corporation ("Cresta Technology"), a Delaware corporation, filed a lawsuit against the Company, Samsung Electronics Co., Ltd., Samsung Electronics America, Inc., LG Electronics Inc. and LG Electronics U.S.A., Inc. in the United States District Court in the District of Delaware, alleging infringement of three United States Patent Nos. 7,075,585, 7,265,792 and 7,251,466.Patents (the "Cresta Patents"). The lawsuit relates to the Company's family of television tuner products. Cresta Technology seeks unspecified compensatory and enhanced damages, attorney fees and a permanent injunction.Delaware District Court action has been stayed.

        On January 28, 2014, Cresta Technology also filed a complaint with the United States International Trade Commission ("ITC") alleging infringement of the same patentspatents. On September 29, 2015, the ITC issued its Final Determination, finding that all the patent claims asserted against the Company's products were either invalid or not infringed and that Cresta Technology failed to establish the ITC's domestic industry requirement. The ITC found no violation by the Company Samsung and LG Electronicsterminated the investigation. On November 30, 2015, Cresta Technology filed an appeal of the ITC decision to the Federal Circuit. On March 8, 2016, pursuant to a stipulated dismissal, the Federal Circuit dismissed Cresta Technology's appeal in its entirety.

        In a parallel process, the Company challenged the validity of the claims of the Cresta Patents asserted in the ITC investigation through a series ofInter-Partes Review (IPR) proceedings at the Patent Trial and Appeal Board (PTAB) of the United States Patent and Trademark Office (USPTO). On October 21, 2015, the USPTO issued final written decisions on a first set of reviewed claims finding all of the reviewed claims invalid. On December 18, 2015, Cresta Technology appealed those adverse decisions to the United States Court of Appeals for the Federal Circuit as to this first USPTO determination. The Federal Circuit summarily affirmed the USPTO's first determination on November 8, 2016 and the mandate issued on December 16, 2016, rendering the USPTO's determination final.

        The USPTO instituted a second set of IPR proceedings against a second set of the remaining claims. On August 11, 2016, the PTAB issued its final written decisions in these proceedings and found all of these remaining claims unpatentable. On October 13, 2016, the patent owner, now known as CF Crespe LLC, filed a notice of appeal with the Federal Circuit seeking to preventoverturn the importationUSPTO's


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

14. Commitments and saleContingencies (Continued)

final written decision as to a subset of allegedly infringing productsthe claims found unpatentable in this second set of IPR proceedings. That appeal is currently in briefing. No hearing date has been set.

        On March 18, 2016, Cresta Technology filed for chapter 7 bankruptcy in the United States.States Bankruptcy Court for the Northern District of California.

        On May 13, 2016, the Bankruptcy Court approved an agreement for DBD Credit Funding LLC ("DBD") to buy Cresta Technology's entire IP portfolio and certain related litigation. Following that sale, DBD (through an apparent assignee, CF Crespe LLC) has substituted in the Delaware District Court action, the appeal proceedings at the U.S. Court of Appeals for the Federal Circuit for the first set of IPR proceedings and the USPTO PTAB proceedings for the second set of IPRs replacing Cresta Technology.

        On July 16, 2014, the Company filed a lawsuit against Cresta Technology in the United States District Court in the Northern District of California alleging infringement of six United States Patents. The Company is seeking a permanent injunction and an award of damages and attorney fees. As a result of the chapter 7 bankruptcy filing by Cresta Technology, these proceedings were stayed. However, as a result of the May 13, 2016 sale order by the Bankruptcy Court, DBD and CF Crespe LLC were ordered to substitute in as Defendant for Cresta Technology. DBD and CF Crespe LLC have appealed the Bankruptcy Court's order in that regard. Subject to that appeal, the Company's patent infringement trial against DBD and CF Crespe LLC is set to begin October 2, 2017.

        As is customary in the semiconductor industry, the Company provides indemnification protection to its customers for intellectual property claims related to the Company's products. The Company has not accrued any material liability on its Consolidated Balance Sheet related to such indemnification obligations in connection with the Cresta Technology litigation.

        The Company intends to continue to vigorously defend against these allegations.Cresta Technology's (now DBD and CF Crespe LLC's) allegations and to continue to pursue its claims against Cresta and their patents. At this time, the Company cannot predict the outcome of these matters or the resulting financial impact to it, if any.

        In 2012, MaxLinear, Inc., a Delaware corporation, and the Company engaged one another in three patent infringement lawsuits filed in the United States District Court for the Southern District of California, San Diego Division, and in the United States District Court for the Western District of Texas, Austin Division. The Texas Court determined that the dispute concerning MaxLinear's patents would proceed in the California Court. On May 16, 2013, MaxLinear filed an additional patent infringement lawsuit against the Company in the United States District Court for the Southern District of California. On October 3, 2013, the Company and MaxLinear executed a Settlement Agreement resolving all of the lawsuits between them. MaxLinear granted the Company a license to its patent portfolio for the accused Company products, and the Company granted MaxLinear a license to its patent portfolio for the accused MaxLinear products. As part of the settlement, MaxLinear made a


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

15. Commitments and Contingencies (Continued)

one-time payment of $1.25 million to the Company. The Company and MaxLinear also entered into a 3-year covenant not to sue and agreed to dismiss all of the pending cases.

Other

        The Company is involved in various other legal proceedings that have arisen in the normal course of business. While the ultimate results of these matters cannot be predicted with certainty, the Company does not expect them to have a material adverse effect on its consolidated financial statements.Consolidated Financial Statements.

16.15. Related Party Transactions

        On March 26, 2013,In August 2016, Bill Bock, a member of the Company's board of directors, joined the board of directors of Spredfast. Spredfast has been a tenant in one of the buildings at the Company's headquarters in Austin, Texas since May 2013. During fiscal 2016, 2015 and 2014, the Company entered into an agreement to purchase consulting servicesreceived payments from Spredfast of $3.2 million, $2.5 million and $1.6 million, respectively, in connection with the acquisitionleased facilities.


Table of Energy Micro. The fees for such services were $1.5 million during fiscal 2013. Mr. Bock, the Company's President, is also an independent contractor with the consulting entity. Mr. Bock is not providing consulting servicesContents


Silicon Laboratories Inc.
Notes to the Company on behalf of the entity. Mr. Bock and the entity have agreed that Mr. Bock will receive no compensation in conjunction with the agreement. Mr. Bock abstained from the negotiations with respect to the agreement between the Company and the entity.Consolidated Financial Statements
December 31, 2016 (Continued)

15. Related Party Transactions (Continued)

        On July 1, 2013, Geir Førre joined the Company as senior vice president and general manager of microcontroller products.president. Mr. Førre was chief executive officer of Energy Micro, until it was acquired by the Company. Mr. Førre was the beneficial owner of approximately 32%30% of the Energy Micro equity and accordingly (a) received approximately $35 million at closing. In the first quarter of 2015, Mr. Førre received approximately $6.1 million of the initial consideration of $107.4$20.0 million (b) may receive an additional approximately $6.5 million out ofpaid for the $20.3 million holdback related to potential indemnification claims and (c) may receive up to approximately $10.5$1.9 million of the $33.3$6.3 million paid for the fiscal 2014 earn-out. On March 11, 2016, the Company entered into an agreement which settled the amount of the earn-out to be paid for fiscal 2015 through 2018. Under this agreement, Mr. Førre received approximately $4.8 million of the $16.0 million that was paid.

        OnAlf-Egil Bogen served on the Company's board of directors from October 17, 2013 the Company appointed Alf-Egil Bogen to its board of directors.April 21, 2016. Mr. Bogen was chief marketing officer of Energy Micro, until it was acquired by the Company. Mr. Bogen was the beneficial owner of approximately 2% of the Energy Micro equity and accordingly (a) received approximately $0.9 million at closing. In the first quarter of the initial consideration of $107.4 million, (b) may receive an additional2015, Mr. Bogen received approximately $0.4 million out of the $20.3$20.0 million paid for the holdback related to potential indemnification claims and (c) may receive up to approximately $0.7$0.1 million of the $33.3$6.3 million paid for the fiscal 2014 earn-out. Under the settlement agreement, Mr. Bogen received approximately $0.3 million of the $16.0 million that was paid for fiscal 2015 through 2018 earn-out. Mr. Bogen had invested approximately $0.8 million in Energy Micro prior to the acquisition.

16. Income Taxes

        Income before income taxes includes the following components (in thousands):

 
 Year Ended 
 
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Domestic

 $4,313 $2,249 $38,174 

Foreign

  60,183  28,014  10,866 

 $64,496 $30,263 $49,040 

        The provision for income taxes consists of the following (in thousands):

 
 Year Ended 
 
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Current:

          

Domestic

 $2,639 $951 $7,083 

International

  4,421  3,015  882 

Total Current

  7,060  3,966  7,965 

Deferred:

  
 
  
 
  
 
 

Domestic

  (2,430) (5,825) 2,352 

International

  (1,628) 2,536  702 

Total Deferred

  (4,058) (3,289) 3,054 

Provision for income taxes

 $3,002 $677 $11,019 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

16. Income Taxes (Continued)

        The reconciliation of the federal statutory tax rate to the Company's effective tax rate is as follows:

 
 Year Ended 
 
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Federal statutory rate

  35.0% 35.0% 35.0%

Foreign tax rate benefit

  (27.2) (30.7) (3.5)

Research and development tax credits

  (4.1) (5.6) (8.6)

Release of prior year unrecognized tax benefits

  (1.7) (1.9) (2.6)

Excess officer compensation

  1.4  3.2  2.3 

Change in cost-sharing treatment of stock-based compensation

  (0.5) (7.1)  

Change in prior period valuation allowance

  (0.6) 8.8  (1.4)

Other

  2.4  0.5  1.3 

Effective Tax Rate

  4.7% 2.2% 22.5%

        The effective tax rate for fiscal 2016 increased from fiscal 2015 primarily due to fiscal 2015 including a net benefit from a change in the tax accounting treatment of stock-based compensation in a cost-sharing arrangement following a U.S. Tax Court case (Altera). The increase in the effective tax rate was offset by a reduction in the prior period valuation allowance.

        The effective tax rate for fiscal 2015 decreased from fiscal 2014, primarily due to the completion of payments related to a prior year intercompany licensing arrangement as well as the recognition of a net benefit from a change in the tax accounting treatment of stock-based compensation in a cost-sharing arrangement following a U.S. Tax Court case (Altera). The decrease in the effective tax rate during fiscal 2015 was offset by an increase in the prior year valuation allowance related to lower expectations of profitability in jurisdictions where tax attributes exist.

        On July 27, 2015, the U.S. Tax Court (the "Court") issued an opinion in Altera Corp. v. Commissioner related to the treatment of stock-based compensation expense in an intercompany cost-sharing arrangement. A final decision was entered by the Court on December 1, 2015. In its opinion, the Court accepted Altera's position of excluding stock-based compensation from its cost-sharing arrangement and concluded that the related U.S. Treasury Regulations were invalid. In February 2016, the U.S. Internal Revenue Service (the "IRS") appealed the decision to the U.S Court of Appeals for the Ninth Circuit. Although the IRS has appealed the decision, and the U.S. Treasury has not withdrawn the requirement to include stock-based compensation from its regulations, based on the facts and circumstances of the Tax Court Case, the Company believes that it is more likely than not that the Tax Court decision will be upheld and has recognized a benefit in its financial statements of $33.1 million. This change to cost-sharing is expected to increase the Company's cumulative foreign earnings at the time of final resolution of the case. As such, the Company has accrued a deferred tax liability of $31.2 million for the U.S. tax cost of potential repatriation of the associated foreign earnings because at this time, the Company cannot reasonably conclude that it will have the ability and intent to indefinitely reinvest these contingent earnings. The Company will continue to monitor ongoing developments and potential impacts to its Consolidated Financial Statements.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

17. Income Taxes

        Significant components of the provision for income taxes are as follows (in thousands):

 
 Year Ended 
 
 December 28,
2013
 December 29,
2012
 December 31,
2011
 

Current:

          

Domestic

 $4,796 $21,084 $14,468 

International

  4,093  (3,009) 2,845 
        

Total Current

  8,889  18,075  17,313 

Deferred:

          

Domestic

  5,591  5,444  (70)

International

  (2,272) (719) (375)
        

Total Deferred

  3,319  4,725  (445)
        

 
$

12,208
 
$

22,800
 
$

16,868
 
        
        

        The Company's provision for income taxes differs from the expected tax expense amount computed by applying the statutory federal income tax rate to income before income taxes as a result of the following:

 
 Year Ended 
 
 December 28,
2013
 December 29,
2012
 December 31,
2011
 

Federal statutory rate

  35.0% 35.0% 35.0%

Foreign tax rate benefit

  (8.2) (11.8) (11.0)

Research and development tax credits

  (14.6) (0.5) (8.5)

Release of prior year unrecognized tax benefits

    (8.4)  

Intercompany technology license

    11.8  10.4 

Excess officer compensation

  1.9  1.0  3.2 

Valuation allowance

  3.8     

Nondeductible acquisition costs

  0.2  0.1  2.9 

Other

  1.6  (0.8) 0.2 
        

  19.7% 26.4% 32.2%
        
        

        The effective tax rate for fiscal 2013 decreased from the prior period, primarily due to the prior period tax charge related to the intercompany license of certain technology associated with the acquisition of Ember during 2012 and the recognition of the fiscal 2012 and fiscal 2013 federal research and development tax credits in fiscal 2013 as a result of the enactment of the American Taxpayer Relief Act of 2012 (the "Act") on January 2, 2013. The decrease in the effective tax rate for fiscal 2013 was partially offset by the release during the prior period of unrecognized tax benefits that were determined to be effectively settled during 2012.

        The effective tax rate for fiscal 2012 decreased from the prior period, primarily due to the release of prior year unrecognized tax benefits that were determined to be effectively settled during fiscal 2012,


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

17.16. Income Taxes (Continued)

along with one-time nondeductible costs associated with        The Company's operations in Singapore are subject to reduced tax rates through June 30, 2019, as long as certain conditions are met. The income tax benefit from the acquisition of Spectra Linearreduced Singapore tax rate reflected in earnings was approximately $7.7 million (representing $0.18 per diluted share) in fiscal 2011. The impact of these items was partially offset by the non-renewal of the federal research and development tax credit2016, approximately $14.4 million (representing $0.34 per diluted share) in fiscal 2012.

        Income before income taxes included the following components (in thousands):

 
 Year Ended 
 
 December 28,
2013
 December 29,
2012
 December 31,
2011
 

Domestic

 $41,849 $80,494 $48,282 

Foreign

  20,178  5,854  4,058 
        

 $62,027 $86,348 $52,340 
        
        

        Foreign income before income taxes increased from fiscal 2012 to fiscal 2013 predominantly due to intercompany technology license payments made by a foreign subsidiary in 2012. Foreign income before income taxes increased from fiscal 2011 to fiscal 2012 predominantly due to increases in product sales, offset in part by an increase in the intercompany technology license payments made by a foreign subsidiary.

        Deferred tax assets2015 and liabilities are recorded for the estimated tax impact of temporary differences between the tax basis and book basis of assets and liabilities. A valuation allowance is established against a deferred tax asset when it is more likely than not that the deferred tax asset will not be realized. The Company recorded a valuation allowance of $1.7approximately $2.0 million (representing $0.05 per diluted share) in fiscal 2013 related to certain state loss and research and development tax credit carryforwards. This figure is net of a valuation allowance release of $0.4 million, which was due to the expiration of certain state net operating loss carryforwards, and a reduction of $0.2 million related to an adjustment of certain acquired state net operating losses and research and development tax credit carryforwards which were fully valued, both of which were offset by changes in deferred tax assets rather than a charge to income tax expense. The Company has determined that it is more likely than not that a portion of the carryforwards will expire or go unutilized because the Company no longer expects to recognize sufficient income in the jurisdictions in which the attributes were created. No valuation allowance was recorded against other deferred tax assets for fiscal 2013 or 2012. Management believes that the Company's results of future operations will generate sufficient taxable income such that it is more likely than not that the remaining deferred tax assets will be realized.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

17. Income Taxes (Continued)

        Significant components of the Company's deferred taxes as of December 28, 2013 and December 29, 2012 are as follows (in thousands):

 
 December 28,
2013
 December 29,
2012
 

Deferred tax assets:

       

Net operating loss carryforwards

 $38,399 $35,847 

Research and development tax credit carryforwards

  9,276  8,447 

Stock-based compensation

  6,757  8,133 

Capitalized research and development

  8,999  9,708 

Deferred income on shipments to distributors

  5,733  3,933 

Accrued liabilities and other

  8,302  7,503 
      

  77,466  73,571 

Less: Valuation allowance

  (3,775) (2,114)
      

  73,691  71,457 

Deferred tax liabilities:

  
 
  
 
 

Acquired intangibles

  38,444  28,653 

Depreciation and amortization

  2,022  1,076 

Prepaid expenses and other

  1,889  1,447 
      

  42,355  31,176 
      

Net deferred tax assets

 
$

31,336
 
$

40,281
 
      
      

        During fiscal 2013, the Company recorded a net deferred tax liability of approximately $5.3 million related to the acquisition of Energy Micro due to differences between book and tax bases of acquired assets and assumed liabilities.

        As of December 28, 2013, the Company had federal net operating loss and research and development credit carryforwards of approximately $77.5 million and $2.1 million, respectively, as a result of the Cygnal Integrated Products, Silicon Clocks, Spectra Linear and Ember acquisitions. These carryforwards expire in fiscal years 2019 through 2032. Recognition of these loss and credit carryforwards is subject to an annual limit, which may cause them to expire before they are used.

        As of December 28, 2013, the Company had foreign net operating loss carryforwards of approximately $29.6 million as a result of the Energy Micro acquisition. These loss carryforwards do not expire and recognition is not subject to an annual limit.

        The Company also had state loss and research and development credit carryforwards of approximately $63.9 million and $11.0 million, respectively. A portion of these loss and credit carryforwards was generated by the Company and a portion was acquired through the Integration Associates, Silicon Clocks, Spectra Linear and Ember acquisitions. Certain of these carryforwards expire in fiscal years 2013 through 2033 and others do not expire. Recognition of some of these loss and credit carryforwards is subject to an annual limit, which may cause them to expire before they are used.


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 2013 (Continued)

17. Income Taxes (Continued)2014.

        At the end of fiscal 2013,2016, undistributed earnings of the Company's foreign subsidiaries of approximately $292.3$361.4 million are intended to be permanently reinvested outside the U.S. Accordingly, no provision for U.S. federal and state income taxes associated with a distribution of these earnings has been made. Determination of the amount of the unrecognized deferred tax liability on these unremitted earnings is not practicable.

        The Company's operations in SingaporeDeferred Income Taxes

        Deferred tax assets and liabilities are subject to reducedrecorded for the estimated tax rates through 2019, as long as certain conditions are met. The income tax benefit (expense) from the reduced Singapore tax rate reflected in earnings was approximately $2.2 million (representing $0.05 per diluted share) in fiscal 2013, approximately $(13.3) million (representing $(0.31) per diluted share) in fiscal 2012 and approximately $2.5 million (representing $0.06 per diluted share) in fiscal 2011. The impact of temporary differences between the reduced Singapore tax rate in fiscal 2012 reflectsbasis and book basis of assets and liabilities. Significant components of the recognitionCompany's deferred taxes as of prior year unrecognized tax benefits.

        The following table reflects changes in the unrecognized tax benefitsDecember 31, 2016 and January 2, 2016 are as follows (in thousands):

 
 Year Ended 
 
 December 28,
2013
 December 29,
2012
 December 31,
2011
 

Beginning balance

 $4,364 $10,943 $10,789 

Additions based on tax positions related to current year

  316  1,818  757 

Additions based on tax positions related to prior years

  318     

Reductions for tax positions related to prior years

    (8,397) (603)
        

Ending balance

 $4,998 $4,364 $10,943 
        
        
 
 December 31,
2016
 January 2,
2016
 

Deferred tax assets:

       

Net operating loss carryforwards

 $21,187 $25,869 

Research and development tax credit carryforwards

  15,068  13,335 

Stock-based compensation

  7,396  8,757 

Capitalized research and development

  6,802  8,741 

Deferred income on shipments to distributors

  9,338  7,413 

Expected future cost-sharing adjustment

  29,719  25,896 

Accrued liabilities and other

  11,321  8,619 

  100,831  98,630 

Less: Valuation allowance

  (12,361) (10,264)

  88,470  88,366 

Deferred tax liabilities:

  
 
  
 
 

Acquired intangible assets

  25,785  33,020 

Depreciation and amortization

  2,939  2,349 

Unremitted foreign earnings for expected future cost-sharing adjustment

  31,165  27,495 

Prepaid expenses and other

  3,069  1,991 

  62,958  64,855 

Net deferred tax assets

 $25,512 $23,511 

        As of December 28, 2013, December 29, 2012 and December 31, 2011,2016, the Company had gross unrecognizedfederal net operating loss and research and development tax benefitscredit carryforwards of $5.0 million, $4.4approximately $44.5 million and $10.9$1.9 million, respectively, of which $4.8 million, $4.1 million and $9.9 million, respectively, would affect the effective tax rate if recognized. During fiscal 2013, the Company had gross increases of $0.6 million. During fiscal 2012, the Company had gross increases of $1.8 million to its current year unrecognized tax benefits, as well as a gross decreaseresult of $8.4 million to its prior year unrecognized tax benefits relatedthe Silicon Clocks, Spectra Linear and Ember acquisitions. These carryforwards expire in fiscal years 2021 through 2032. Recognition of these loss and credit carryforwards is subject to an uncertain tax position that was determined to be effectively settled. A portion of these amounts in fiscal 2012 represents foreign currency remeasurement adjustments and was recognized in other income (expense), net.

        The Company recognizes interest and penalties related to unrecognized tax benefits in the provision for income taxes. The Company recognized less than $0.1 million of interest in the provision for income taxes in fiscal 2013. The Company did not recognize interest in the provision of income taxes in fiscal 2012 and 2011. The Company has an accrual of less than $0.1 million for the payment of interest related to unrecognized tax positions at the end of fiscal 2013, with no such accrual at the end of fiscal 2012 and 2011.annual


Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

17.16. Income Taxes (Continued)

limit, which may cause them to expire before they are used. Additionally, as of December 31, 2016, the Company had generated $7.4 million of federal research and development tax credit carryforwards. These carryforwards will begin expiring in 2036.

        As of December 31, 2016, the Company had foreign net operating loss carryforwards of approximately $13.2 million as a result of the Energy Micro acquisition. These loss carryforwards do not expire and recognition is not subject to an annual limit.

        The Company believesalso had state loss and research and development tax credit carryforwards of approximately $49.1 million and $13.1 million, respectively. A portion of these loss and credit carryforwards was generated by the Company and a portion was acquired through the Integration Associates, Silicon Clocks, Spectra Linear and Ember acquisitions. Certain of these carryforwards expire in fiscal years 2017 through 2033, and others do not expire. Recognition of some of these loss and credit carryforwards is subject to an annual limit, which may cause them to expire before they are used.

        A valuation allowance is established against a deferred tax asset when it is reasonably possiblemore likely than not that the deferred tax asset will not be realized. As of December 31, 2016, the Company maintains a valuation allowance with respect to certain deferred tax assets relating primarily to U.S. federal and state research and development tax credit carryforwards.

Uncertain Tax Positions

        The following table summarizes the activity related to gross unrecognized tax benefits will decrease by approximately $1.5(in thousands):

 
 Year Ended 
 
 December 31,
2016
 January 2,
2016
 January 3,
2015
 

Beginning balance

 $3,610 $3,929 $4,998 

Additions based on tax positions related to current year

  439  432  465 

Additions based on tax positions related to prior years

  99    58 

Reductions for tax positions as a result of a lapse of the applicable statute of limitations

  (1,094) (751) (1,592)

Ending balance

 $3,054 $3,610 $3,929 

        As of December 31, 2016, January 2, 2016 and January 3, 2015, the Company had gross unrecognized tax benefits of $3.0 million, $3.6 million and $3.9 million, respectively, of which $2.2 million, $3.2 million and $4.0 million, respectively, would affect the effective tax rate if recognized.

        The Company recognizes interest and penalties related to unrecognized tax benefits in the next 12 months due to the lapse of the statute of limitations applicable to a tax deduction claimed on a prior year foreign tax return.provision for income taxes. These amounts were not material for fiscal years 2016, 2015 and 2014.

        The taxTax years 20062012 through 20132016 remain open to examination by the major taxing jurisdictions to which the Company is subject. The examination of the Company's 2009 through 2011 federal income tax returns by the U.S. Internal Revenue Service was completed during the third quarter of 2013 with no material impact on the Company's financial statements. The Company is not currently under audit in any other major taxing jurisdiction.


18.Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 31, 2016 (Continued)

16. Income Taxes (Continued)

        Although the timing of resolution, settlement and closures of audits is not certain, the Company does not expect the gross unrecognized tax benefits to materially change in the next 12 months.

17. Segment Information

        The Company has one operating segment, mixed-signal analog intensive ICs,products, consisting of numerous product areas. The Company's chief operating decision maker is considered to be its Chief Executive Officer. The chief operating decision maker allocates resources and assesses performance of the business and other activities at the operating segment level.

        The Company groups its products into threefour categories, based on the markets and applications in which its ICs may be used. The following summarizes the Company's revenue by product category (in thousands):


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

Broad-based

 $281,777 $270,098 $208,697 

Internet of Things

 $314,614 $262,329 $209,005 

Broadcast

 199,837 186,067 169,548  157,746 161,787 204,256 

Infrastructure

 147,677 121,974 108,123 

Access

 98,473 107,129 113,380  77,589 98,736 99,320 
       

Revenues

 $580,087 $563,294 $491,625 
       

Total

 $697,626 $644,826 $620,704 
       

        Revenue is attributed to a geographic area based on the shipped-to location. The following summarizes the Company's revenue by geographic area (in thousands):


 Year Ended  Year Ended 

 December 28,
2013
 December 29,
2012
 December 31,
2011
  December 31,
2016
 January 2,
2016
 January 3,
2015
 

United States

 $68,566 $64,856 $67,432  $94,583 $96,959 $89,935 

China

 253,261 219,400 152,533  291,974 281,306 271,818 

Taiwan

 55,036 64,150 59,208 

Japan

 32,557 31,315 50,270 

South Korea

 21,303 57,910 70,252 

Rest of world

 149,364 125,663 91,930  311,069 266,561 258,951 
       

Total

 $580,087 $563,294 $491,625  $697,626 $644,826 $620,704 
       
       

        The following summarizes the Company's property and equipment, net by geographic area (in thousands):

 
 December 31,
2016
 January 2,
2016
 

United States

 $124,163 $126,404 

Rest of world

  5,396  4,728 

Total

 $129,559 $131,132 

Table of Contents


Silicon Laboratories Inc.
Notes to Consolidated Financial Statements
December 28, 201331, 2016 (Continued)

18. Segment Information (Continued)Subsequent Event

Acquisition

        On January 20, 2017, the Company acquired Zentri, Inc., a private company. Zentri is an innovator in low-power, cloud-connected Wi-Fi technologies for the IoT. The Company acquired Zentri for: 1) initial cash consideration of $15.5 million adjusted for an amount equal to: a) certain Zentri liabilities as of the closing date, b) Zentri transaction expenses, and c) the aggregate exercise price of all vested options for which the per common share closing consideration exceeds the per share exercise price for such vested options, and 2) potential additional consideration of up to approximately $10.0 million payable based on fiscal 2017 revenue from certain Zentri products.

        The following summarizesCompany will record the purchase of Zentri using the acquisition method of accounting and will recognize the assets acquired and liabilities assumed at their fair values as of the date of the acquisition. The results of Zentri's operations will be included in the Company's propertyconsolidated results of operations beginning on the date of the acquisition.

        The Company is currently evaluating the fair values of the consideration transferred, assets acquired and equipment, net by geographic area (in thousands):liabilities assumed. The Company expects to complete its initial purchase price allocation in the first quarter of fiscal 2017.

 
 December 28,
2013
 December 29,
2012
 

United States

 $126,263 $127,716 

Rest of world

  6,182  7,555 
      

Total

 $132,445 $135,271 
      
      

Table of Contents


Supplementary Financial Information (Unaudited)

        Quarterly financial information for fiscal 20132016 and 20122015 is as follows. All quarterly periods reported here had 13 weeks (in thousands, except per share amounts):


 Fiscal 2013  Fiscal 2016 

 Fourth
Quarter
 Third
Quarter
 Second
Quarter
 First
Quarter
  Fourth
Quarter
 Third
Quarter
 Second
Quarter
 First
Quarter
 

Revenues

 $146,236 $146,933 $141,543 $145,375  $182,610 $178,083 $174,908 $162,025 

Gross margin

 88,598 88,161 88,773 87,372  109,476 108,203 108,294 95,531 

Operating income

 14,154 10,490 19,029 20,637  20,083 21,732 17,614 6,848 

Net income

 $10,642 $6,531 $12,612 $20,034  $20,109 $20,018 $15,559 $5,808 

Earnings per share:

 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 

Basic

 $0.25 $0.15 $0.30 $0.47  $0.48 $0.48 $0.37 $0.14 

Diluted

 $0.24 $0.15 $0.29 $0.46  $0.47 $0.47 $0.37 $0.14 

 


 Fiscal 2012  Fiscal 2015 

 Fourth
Quarter
 Third
Quarter
 Second
Quarter
 First
Quarter
  Fourth
Quarter
 Third
Quarter
 Second
Quarter
 First
Quarter
 

Revenues

 $152,461 $149,461 $135,670 $125,702  $160,071 $156,194 $164,856 $163,705 

Gross margin

 93,626 86,493 82,802 75,096  93,538 93,435 97,428 96,369 

Operating income

 25,302 27,230 16,379 16,764  4,796 11,223 9,003 7,212 

Net income

 $18,695 $10,024 $20,509 $14,320  $5,658 $9,975 $7,575 $6,378 

Earnings per share:

 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 

Basic

 $0.45 $0.24 $0.48 $0.34  $0.14 $0.24 $0.18 $0.15 

Diluted

 $0.44 $0.24 $0.47 $0.33  $0.13 $0.23 $0.17 $0.15