Quarterlytics / Technology / Semiconductors / Rambus

Rambus

rmbs · NASDAQ Technology
Claim this profile
Ticker rmbs
Exchange NASDAQ
Sector Technology
Industry Semiconductors
Employees 501-1000
← All annual reports
FY2018 Annual Report · Rambus
Sign in to download
Loading PDF…
Table of Contents

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
________________________________________
Form 10-K
________________________________________

(Mark One)
þ

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

o

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF
1934
For the transition period from                to

For the fiscal year ended December 31, 2018

or

Commission file number: 000-22339
________________________________________

RAMBUS INC.

(Exact name of registrant as specified in its charter)
________________________________________

Delaware

(State or other jurisdiction of
incorporation or organization)

1050 Enterprise Way, Suite 700

Sunnyvale, California

(Address of principal executive offices)

94-3112828

(I.R.S. Employer
Identification Number)

94089

(Zip Code)

Registrant’s telephone number, including area code:
(408) 462-8000
________________________________________

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

Title of Each Class

Common Stock, $.001 Par Value

Name of Each Exchange on Which Registered

The NASDAQ Stock Market LLC

(The NASDAQ Global Select Market)

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

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

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

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

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

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. o

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

Large accelerated filer  þ

Accelerated filer  ¨

Non-accelerated filer  ¨

Smaller reporting company  ¨

Emerging growth company  o

 
 
 
 
 
 
 
 
 
 
 
 
 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or

revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. o

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

The  aggregate  market  value  of  the  Registrant’s  Common  Stock  held  by  non-affiliates  of  the  Registrant  as  of  June  30, 2018  was approximately $1.0 billion
based upon the closing price reported for such date on The NASDAQ Global Select Market. For purposes of this disclosure, shares of Common Stock held by
officers and directors of the Registrant and persons that may be deemed to be affiliates under the Act have been excluded. This determination of affiliate status is
not necessarily a conclusive determination for other purposes.

The number of outstanding shares of the Registrant’s Common Stock, $.001 par value, was 109,042,945 as of January 31, 2019 .

DOCUMENTS INCORPORATED BY REFERENCE

Certain information is incorporated into Part III of this report by reference to the Proxy Statement for the Registrant’s annual meeting of stockholders to be held
on or about April 25, 2019 to be filed with the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal
year covered by this Form 10-K.

Table of Contents

Note Regarding Forward-Looking Statements

TABLE OF CONTENTS

PART I.

Item 1.

Item 1A.

Item 1B.

Item 2.

Item 3.

Item 4.

PART II.   

Item 5.

Item 6.

Item 7.

Item 7A.

Item 8.

Item 9.

Item 9A.

Item 9B.

PART III

Item 10.

Item 11.

Item 12.

Item 13.

Item 14.

PART IV

Item 15.

Business

Risk Factors

Unresolved Staff Comments

Properties

Legal Proceedings

Mine Safety Disclosures

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

Selected Financial Data

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

Quantitative and Qualitative Disclosures About Market Risk

Financial Statements and Supplementary Data

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

Controls and Procedures

Other Information

Directors, Executive Officers and Corporate Governance

Executive Compensation

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

Certain Relationships and Related Transactions, and Director Independence

Principal Accountant Fees and Services

Exhibits and Financial Statement Schedules

INDEX TO EXHIBITS

SIGNATURES

POWER OF ATTORNEY

2

4

5

12

27

27

27

27

27

28

30

31

52

53

53

53

54

55

55

55

55

55

55

56

56

106

109

109

 
 
 
 
Table of Contents

This Annual Report on Form 10-K (“Annual Report on Form 10-K”) contains forward-looking statements within the meaning of Section 27A of the Securities

Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements include, without limitation, predictions regarding the
following aspects of our future:

NOTE REGARDING FORWARD-LOOKING STATEMENTS

• Success in the markets of our products and services or our customers’ products;

• Sources of competition;

• Research and development costs and improvements in technology;

• Sources, amounts and concentration of revenue, including royalties;

• Success in signing and renewing license agreements;

• Terms of our licenses and amounts owed under license agreements;

• Technology product development;

• Dispositions, acquisitions, mergers or strategic transactions and our related integration efforts;

•

Impairment of goodwill and long-lived assets;

• Pricing policies of our customers;

• Changes in our strategy and business model, including the expansion of our portfolio of inventions, products, software, services and solutions to address

additional markets in memory, chip, mobile payments, smart ticketing and security;

• Deterioration of financial health of commercial counterparties and their ability to meet their obligations to us;

• Effects of security breaches or failures in our or our customers’ products and services on our business;

• Engineering, sales and general and administration expenses;

• Contract revenue;

• Operating results;

•

International licenses, operations and expansion;

• Effects of changes in the economy and credit market on our industry and business;

• Ability to identify, attract, motivate and retain qualified personnel;

• Effects of government regulations on our industry and business;

• Manufacturing, shipping and supply partners and/or sale and distribution channels;

• Growth in our business;

• Methods, estimates and judgments in accounting policies;

• Adoption of new accounting pronouncements, including adoption in 2018 of the new revenue recognition standard on our financial position and results of

operations;

• Effective tax rates, including as a result of the new U.S. tax legislation;

• Restructurings and plans of termination;

• Realization of deferred tax assets/release of deferred tax valuation allowance;

• Trading price of our common stock;

•

Internal control environment;

• The level and terms of our outstanding debt and the repayment or financing of such debt;

• Protection of intellectual property;

• Any changes in laws, agency actions and judicial rulings that may impact the ability to enforce intellectual property rights;

•

Indemnification and technical support obligations;

• Equity repurchase plans;

•

Issuances of debt or equity securities, which could involve restrictive covenants or be dilutive to our existing stockholders;

• Effects of fluctuations in currency exchange rates;

2

Table of Contents

• Outcome and effect of potential future intellectual property litigation and other significant litigation; and

• Likelihood of paying dividends.

You can identify these and other forward-looking statements by the use of words such as “may,” “future,” “shall,” “should,” “expects,” “plans,” “anticipates,”

“believes,” “estimates,” “predicts,” “intends,” “potential,” “continue,” “projecting” or the negative of such terms, or other comparable terminology. Forward-
looking statements also include the assumptions underlying or relating to any of the foregoing statements.

Actual results could differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth under

Item 1A, “Risk Factors.” All forward-looking statements included in this document are based on our assessment of information available to us at this time. We
assume no obligation to update any forward-looking statements.

3

Table of Contents

PART I

Rambus and CryptoManager TM are trademarks or registered trademarks of Rambus Inc. Other trademarks or copyrights that may be mentioned in this Annual

Report on Form 10-K are the property of their respective owners.

4

 
Table of Contents

Item 1.

Business

Dedicated to making data faster and safer, Rambus is a leading semiconductor company that creates innovative hardware, software and services that drive

technology advancements across the data center, edge and connected end points. Our architecture licenses, IP cores, chips, software, and services span memory and
interfaces, embedded security, and key management technologies to positively impact the modern world. We collaborate with the industry, partnering with leading
chip and system designers, foundries, and service providers. Integrated into a wide array of devices and systems, our products power and secure diverse
applications, including data center and networking, artificial intelligence and machine learning, IoT, and automotive.

Building upon the foundation of technologies for memory, SerDes and other chip interfaces, we have expanded our portfolio of inventions and solutions to
address chip and system security, as well as device provisioning and key management. We intend to continue our growth in leading-edge, high-growth markets,
consistent with our mission to create value through our innovations and to make those technologies available through the shipment of products, the delivery of
services, and licensing business models. Key to our efforts is continuing to hire and retain world-class inventors, scientists and engineers to lead the development
and deployment of inventions and technology solutions for our fields of focus.

Rambus is aligning the research priorities in Rambus Labs on innovation and patent development in these key areas as well. Our patents remain foundational to
our industry. By reinforcing our commitment to invention and advancing semiconductor technology, we enhance our value and relevance in our target markets and
create a platform for investment in product development. Our inventions and technology solutions are offered to our customers through patent, technology,
software and IP core licenses, as well as product sales and services. Today, our primary source of revenue is derived from patent licenses, through which we
provide our customers a license to use a certain portion of our broad portfolio of patented inventions. Royalties from licenses accounted for 56%, 74% and 79% of
our consolidated revenue for the years ended December 31, 2018, 2017 and 2016, respectively.

Our strategy is to optimize the company for operational efficiency and profitability, leveraging synergies across our businesses and customer base. There is
significant overlap in our ecosystem of customers, partners and influencers. By focusing on hardware and software solutions for secure, connected semiconductors,
we are able to bring better value to our customers and improved profitability for the company.

We demonstrated execution across our product teams in 2018, with record annual product revenue for our IP cores and server DIMM chipsets. Our DDR4
server DIMM chipset continues to gain market share for the current generation server platform and we anticipate even greater market share on the upcoming CPU
refresh as we have more than twice the number of OEM and data center qualifications versus the previous generation. In addition to the steady growth in DDR4,
we maintained our leadership position for next-generation DDR5 server DIMM chips as the first supplier with silicon at the top-end speeds for both the Register
Clock Driver (RCD) and Data Buff (DB) chips.

We continued our leadership position in high-end and high-bandwidth SerDes and memory IP cores in advanced process nodes with the tape out of the
industry’s first GDDR6 memory PHY in a leading-edge process node. As demand for high memory bandwidth extends beyond graphics, we see expanding
customer engagement in a wide range of high-performance applications.

Turning to our Cryptography business, 2018 saw the importance of semiconductor device-level security grow in the industry, resulting in increased traction and

opportunities for our embedded security cores and provisioning capabilities in market segments like IoT, automotive, networking and government. We launched
the programmable CryptoManager Root of Trust, which combines our deep security expertise with a modern open architecture, RISC-V, to create an easy-to-
consume, secure processing core and have ongoing engagements with semiconductor manufacturers, OEMs and cloud providers. We believe our CryptoManager
programmable, secure core and provisioning platform will play an increasingly important role in securing special-purpose computing use cases at the edge, driving
increased customer interest across our target segments including automotive, artificial intelligence, machine learning, and government.

5

Table of Contents

Organization

We have organized our business into three operational units:

• Memory and Interfaces (MID)
•
•

Security (RSD)
Emerging Solutions (ESD)

As of December 31, 2018, MID and RSD met quantitative thresholds for disclosure as reportable segments. Results for the remaining operating segments are
shown under “Other.” For additional information concerning segment reporting, see Note 6, “Segments and Major Customers,” of Notes to Consolidated Financial
Statements of this Form 10-K.

Memory and Interfaces

The Rambus Memory and Interfaces Division develops IP cores and memory buffer chips that solve the power, performance, and capacity challenges of the
communications and data center computing markets. Rambus standards-compatible memory and SerDes solutions include server DIMM memory interface chips,
architectures, and IP cores for high-speed memory and SerDes interfaces. Developed through our system-aware design methodology, Rambus products deliver
leading-edge performance with improved time-to-market and first-time-right quality.

As data rates continue to rise to meet that growing demands for faster data delivery, it becomes increasingly difficult to maintain signal integrity and power

efficiency at the speeds required to support more powerful, multi-core processors. To address these challenges and enable the continued improvement of
electronics systems, ongoing innovation is required. The many contributions and patented innovations developed by Rambus scientists and engineers have been,
and continue to be, critical in addressing some of the most difficult chip and system challenges. The foundations of the Memory and Interfaces Division are world-
class memory architectures and high-performance SerDes technologies that are brought to market through three main business initiatives: (1) patent licensing; (2)
silicon IP core licensing; and (3) chipsets.

Patent Licensing

Our traditional patent licensing program remains our primary source of revenue. Our patent licenses provide our customers a license to use a certain portion of
our portfolio of patented inventions in the customer’s own digital electronics products, systems or services. The licenses may also define the specific field of use
where our customers may use or employ our inventions in their products. License agreements are structured with fixed, variable or a hybrid of fixed and variable
royalty payments over certain periods ranging up to ten years. Leading consumer product, industrial, semiconductor and system companies such as AMD,
Broadcom, Cisco, Freescale, Fujitsu, GE, IBM, Intel, LSI, Micron, Nanya, NVIDIA, Panasonic, Qualcomm, Renesas, Samsung, SK hynix, STMicroelectronics,
Toshiba, Western Digital, Winbond and Xilinx have licensed our patents for use in their own products. The vast majority of our patents were secured through our
internal research and development efforts across all of our business units.

Silicon IP Core Licensing

Our IP core licensing program offers a suite of high-speed memory and SerDes PHY solutions designed to meet the growing performance needs of data center,

networking, communications, machine learning and automotive . Due to the complex nature of implementing our technologies, we provide engineering services
under certain of these licenses to help our customers successfully integrate our technology solutions into their semiconductor and system products. Licensees may
also receive, in addition to their license agreements, patent licenses as necessary to implement the technology in their products with specific rights and restrictions
to the applicable patents elaborated in their individual contracts. Our solutions are designed into systems bought by OEMs. We license both directly to ASIC
design houses and semiconductor foundries that, in turn, sell to OEMs, or to OEMs directly.

Chip Sets

Made for high speed, reliability and power efficiency, our DDR memory buffer chipsets for RDIMM, LRDIMM and NVDIMM server modules deliver top-of-

the-line performance and capacity for the next wave of enterprise and data center servers. Rambus offers DDR3 and DDR4 server DIMM chipsets to enable
increased memory capacity, while maintaining peak

6

Table of Contents

performance for data-intensive work loads. We are the first provider to offer a silicon-proven server DIMM buffer chipset including both the RCD and DB capable
of achieving the speeds expected for next-generation DDR5.

We sell our semiconductor products directly and indirectly to module manufacturers and OEMs worldwide through multiple channels, including our direct sales

force and distributors. We operate direct sales offices in the United States, Japan, Korea, Taiwan, China, and employ sales personnel that cover our direct
customers and manage our channel partners.

We operate a fabless business model and use third-party foundries and assembly and test manufacturing contractors to manufacture, assemble and test our

semiconductor products. We also inspect and test parts in our U.S. based facilities. This outsourced manufacturing approach allows us to focus our resources on the
design, sale and marketing of our products. Outsourcing also allows us the flexibility needed to respond to new market opportunities, simplifies our operations and
significantly reduces our capital requirements.

Security

Rambus Security is dedicated to providing a secure foundation for a connected world. Our innovative solutions include embedded secure cores, software, and

key provisioning, spanning areas including tamper-resistant electronic devices and systems, network security, mobile payment, smart ticketing
and trusted transaction services. Rambus' foundational technologies protect a substantial amount of licensed products annually, providing secure access to data and
creating an economy of digital trust between our customers and their customer base.

Security challenges are increasingly prevalent in a multitude of industries, including high-growth sectors such as mobile, Internet of Things (IoT), automotive
and the data center, providing a variety of opportunities for our security technologies and services. We believe robust security starts with the design of the SoC and
continues through the manufacturing supply chain to end-user applications. In line with this thinking, RSD offers a suite of products and services from DPA
countermeasures and cores to our CryptoManager™ Platform, mobile payments and smart ticketing.

DPA Countermeasures and Cores

We own a portfolio of patented inventions and technology solutions that are needed for creating secure tamper-resistant electronic devices and systems. These

patented DPA countermeasures are critical in protecting devices against side channel attacks such as differential power analysis, which involve monitoring the
variations in power consumption or electromagnetic emissions of a device. In addition, our hardware-based cores provide a robust hardware-based solution to
protect electronics systems from side-channel attacks, counterfeiting, piracy, and other forms of attack.

For DPA countermeasures, our business model is to provide a combination of patent licenses, technology, consulting services (training, evaluation, and design),

and test equipment as well as DPA resistant cores and software libraries. We are recognized worldwide for our expertise in this area, and our strategy is to
strengthen our offering beyond stand-alone patent licensing. We discovered the existence of SPA and DPA vulnerabilities in the 1990s, and patented the
fundamental techniques for preventing against this method of attack. DPA protections are a critical security ingredient in tamper-resistant products, and are
important or required for a broad range of applications and devices (including smart cards, mobile devices, FPGAs, government/defense applications, consumer
set-top boxes, postage meters and security tokens).

In addition to the DPA countermeasures portfolio, we have developed technologies, expertise, advanced designs, and development tools for building highly
secure cryptographic semiconductor cores. We have successfully deployed our semiconductor cores in two primary application areas where effective security is
valued and paid for by customers: content protection and anti-counterfeiting.

CryptoManager Platform

As the amount of valuable data stored and communicated across devices continues to grow in the mobile, automotive and IoT segments, the need for robust
security services is becoming increasingly necessary. Robust security starts with the design of the SoC and continues with the manufacturing supply chain. The
Rambus CryptoManager Platform includes a hardware root of trust, key provisioning, software and hosted security services, capable of supporting a variety of
configurations via a hardware core or secure software, to provide a scalable and flexible security solution for chip-to-cloud-to-crowd security.

The CryptoManager platform provides chip and device companies with an advanced hardware root-of-trust for their SoCs, as well as an Infrastructure Suite for

end-to-end security throughout the SoC design and manufacturing process. The

7

Table of Contents

CryptoManager platform has been developed with a services-based architecture that enables a secure, two-way communication channel across the manufacturing
stages. This extensible solution is built on a foundation that simplifies, automates, and reduces costs for global enterprise IT, manufacturing, and operations
functions. The platform is designed to support the enablement of in-field provisioning and hosted security services.

Mobile Payments

Tokenization technology and software continues to expand beyond card and mobile EMV payments to ecommerce, account-to-account and blockchain
transactions to reduce fraud and improve trust. NFC-based mobile payments offer many advantages to consumers, retailers and financial institutions alike. For
consumers, mobile wallets provide a convenient, “tap-and-go” frictionless commerce experience, seamlessly integrating credit cards, loyalty points and gift cards,
while leveraging enhanced security features like multi-factor authentication and biometrics. For retailers, mobile wallets offer businesses the ability to engage users
with an immersive, “in-app” experience that bridges the gap from digital to physical with profile-based shopping to offer customized recommendations and
coupons to customers. Finally, for banks and retailers, mobile wallets enhance protection from fraud and greater customer engagement and loyalty, and blockchain
tokenization protects a broad range of financial services leveraging blockchain technology including cryptocurrency transactions and trading.

Our technology adapts to any mobile payments ecosystem - whether card credentials are stored on the device or in the cloud using host card emulation - and
ensures security through tokenization. With our software, customers can fulfill the role of a token service provider, securing transactions by removing vulnerable
card data from the payment network. Our mobile payment solutions are offered to financial institutions and retailers through software license agreements.

Smart Ticketing

Smart ticketing is changing the way people travel by bringing greater convenience and security to travelers and transport operators alike. Through the use of
smart cards and smart phones, travelers can download and store their tickets electronically, eliminating the need for ticket vending machines and paper tickets,
enabling users to simply tap their smart card or device on a gate or validator to access their travel. Our smart ticketing technology combines back-office processing
and analytics systems with web portals, smart cards and mobile applications to deliver comprehensive solutions to transport operators and local authorities. Data
analytics enable improved profitability and optimization of smart transport schemes through access to real-world travel data, with easy management of transaction
data to ensure accurate reimbursements. ITSO certified and interoperable with existing transport providers, our smart ticketing solutions are easy to integrate across
multiple modes of travel, simplifying customer journeys at lower cost. Currently, our smart ticketing solutions are primarily offered to public transit authorities in
the United Kingdom and we are working to expand our offerings into the broader international markets.

Emerging Solutions

ESD encompasses our long-term research and development efforts in emerging technologies, primarily focused on next-generation memory solutions. ESD

programs are generally at the research and pre-commercial stages and may involve collaboration with government entities, universities and industry partners.

Lighting

On January 30, 2018, we announced our plans to close our lighting division and manufacturing operations in Brecksville, Ohio. We believe that such business

was not core to our strategy and growth objectives. As of December 31, 2018, the lighting division has been wound down. Refer to Note 15, “Restructuring
Charges” of Notes to Consolidated Financial Statements of this Form 10-K for additional details.

Competition

Our industries are intensely competitive and have been impacted by rapid technological change, short product life cycles, cyclical market patterns, price
erosion, increasing foreign and domestic competition and market consolidation. We believe the principal competition for our technologies may come from our
prospective customers, some of whom are evaluating and developing products based on technologies that they contend or may contend will not require a license
from us. Some of our competitors use a system-level design approach similar to ours, including activities such as board and package design, power and signal
integrity analysis, and thermal management. Many of these companies are larger and may have better access to financial, technical and other resources than we
possess.

8

To the extent that alternatives might provide comparable system performance at lower or similar cost to our technologies are perceived to require the payment

of no or lower royalties, or to the extent other factors influence the industry, our customers and prospective customers may adopt and promote alternative
technologies. Even to the extent we determine that such alternative technologies infringe our patents, there can be no assurance that we would be able to negotiate
agreements that would result in royalties being paid to us without litigation, which could be costly and the results of which would be uncertain. In the past,
litigation has been and in the future may be required to enforce and protect our intellectual property rights, as well as the substantial investments undertaken to
research and develop our innovations and technologies.

Research, Development and Employees

Our growth strategy will be substantially dependent on our ability to develop key innovations that meet the future needs of a dynamic market. To this end, we
continue to invest substantial funds in research and development and have assembled a team of highly skilled inventors, engineers and scientists whose activities
are focused on continually developing new innovations within our chosen technology fields. Using this foundation of innovations, our technical teams develop new
solutions that enable increased performance, greater power efficiency, increased levels of security, as well as other improvements and benefits. Our solution design
and development process is a multi-disciplinary effort requiring expertise in multiple fields across all of our operational units.

As of December 31, 2018, we had approximately 560 employees in our engineering departments, representing approximately 70% of our total number of 796
employees. None of our employees are covered by collective bargaining agreements. As noted, we believe our future success is dependent on our continued ability
to identify, attract, motivate and retain qualified personnel. In order to attract qualified employees, we have created an environment and culture that encourages,
fosters and supports research, development and innovation in breakthrough technologies with significant opportunities for broad industry adoption. To date, we
believe we have been successful in recruiting qualified employees and that we have a good relationship with our employees.

A significant number of our scientists and engineers spend all or a portion of their time on research and development. For the years ended December 31, 2018,

2017 and 2016, research and development expenses were $158.3 million, $149.1 million and $129.8 million, respectively. We expect to continue to invest
substantial funds in research and development activities. In addition, because our customer agreements often call for us to provide engineering support, a portion of
our total engineering costs are allocated to the cost of contract and other revenue.

Intellectual Property

We maintain and support an active program to protect our intellectual property, primarily through the filing of patent applications and the defense of issued
patents against infringement. As of December 31, 2018, our technologies are covered by 2,094 U.S. and foreign patents, having expiration dates ranging from 2019
to 2037. Additionally, we have 557 patent applications pending. Some of the patents and pending patent applications are derived from a common parent patent
application or are foreign counterpart patent applications. We believe our patented innovations provide our customers with the ability to achieve improved
performance, lower risk, greater cost-effectiveness and other benefits in their products and services.

We have a program to file applications for and obtain patents in the United States and in selected foreign countries where we believe filing for such protection is

appropriate and would further our overall business strategy and objectives. In some instances, obtaining appropriate levels of protection may involve prosecuting
continuation and counterpart patent applications based on a common parent application. In addition, we attempt to protect our trade secrets and other proprietary
information through agreements with current and prospective customers, and confidentiality agreements with employees and consultants and other security
measures. We also rely on copyright, trademarks and trade secret laws to protect our intellectual property.

Backlog

Our product sales are generally made pursuant to short-term purchase orders. These purchase orders are made without deposits and may be, and often are,
rescheduled, canceled or modified on relatively short notice, without substantial penalty. Therefore, we believe that purchase orders or backlog are not necessarily
a reliable indicator of our future product sales.

9

Corporate and Other Information

Rambus Inc. was founded in 1990 and reincorporated in Delaware in March 1997. Our principal executive offices are located at 1050 Enterprise Way, Suite
700, Sunnyvale, California. Our website is www.rambus.com . The inclusion of our website address in this report does not include or incorporate by reference into
this report any information on our website. You can obtain copies of our Forms 10-K, 10-Q, 8-K, and other filings with the SEC, and all amendments to these
filings, free of charge, from our website as soon as reasonably practicable following our filing of any of these reports with the SEC. In addition, you may read and
copy any material we file with the SEC at the SEC’s Public Reference Room at 100 F Street NE, Room 1580, Washington, D.C. 20549. You may obtain
information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC also maintains a website that contains reports, proxy,
and information statements, and other information regarding registrants that file electronically with the SEC at www.sec.gov.

Information concerning our revenue, results of operations and revenue by geographic area is set forth in Item 6, “Selected Financial Data,” in Item 7,
“Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and in Note 6, “Segments and Major Customers,” of Notes to
Consolidated Financial Statements of this Form 10-K, all of which are incorporated herein by reference. Information concerning identifiable assets and segment
reporting is also set forth in Note 6, “Segments and Major Customers,” of Notes to Consolidated Financial Statements of this Form 10-K. Information on
customers that comprise 10% or more of our consolidated revenue and risks attendant to our foreign operations is set forth below in Item 1A, “Risk Factors.”

10

Our Named Executive Officers

Information regarding our named executive officers and their ages and positions as of February 22, 2019, is contained in the table below. Our named executive

officers are appointed by, and serve at the discretion of, our Board of Directors. There is no family relationship between any of our named executive officers.

Name
Luc Seraphin

Age

55

Rahul Mathur

45

Jae Kim

48

Position and Business Experience

Mr. Seraphin is President & Chief Executive Officer. With over 20 years of experience managing global
businesses, Mr. Seraphin brings the overall vision and leadership necessary to drive future growth for the company.
Prior to this role, Mr. Seraphin was the senior vice president and general manager of the Memory and Interface
Division, leading the development of the company’s innovative memory architectures and high-speed serial link
solutions. Mr. Seraphin also served as the senior vice president of Worldwide Sales and Operations where he
oversaw sales, business development, customer support and operations across the various business units within
Rambus.

Mr. Seraphin started his career as a field application engineer at NEC and later joined AT&T Bell Labs, which
became Lucent Technologies and Agere Systems (now Avago Technologies). During his 18 years at Avago, Mr.
Seraphin held several senior positions in sales, marketing and general management, culminating in his last position
as executive vice president and general manager of the Wireless Business Unit. Following this, Mr. Seraphin held
the position of general manager of a GPS startup company in Switzerland and was vice president of Worldwide
Sales and Support at Sequans Communications. During his career, Mr. Seraphin has advised and supported
companies in both the product and IP markets.

Mr. Seraphin holds a bachelor’s degree in Mathematics and Physics and a master’s degree in Electrical Engineering
from Ecole Superieure de Chimie, Physique, Electronique, based in Lyon, France where he majored in Computer
Architecture. Mr. Seraphin also holds an MBA from the University of Hartford and has completed the senior
executive program of Columbia University.

Senior Vice President, Finance and Chief Financial Officer. Mr. Mathur joined us in his current position in October
2016. Prior to joining us, Mr. Mathur served as senior vice president of finance at Cypress Semiconductor Corp., a
provider of embedded memory, microcontroller, and analog semiconductor system solutions, from March 2015 to
September 2016, where he was responsible for financial planning and investor relations. From August 2012 to
March 2015, Mr. Mathur served as vice president of finance at Spansion, Inc. (later acquired by Cypress
Semiconductor Corp.). Mr. Mathur served as vice president of finance at Picaboo Corporation from January 2012 to
August 2012 and vice president of finance at CDNetworks Inc. from January 2011 to December 2011. Prior to
January 2011, Mr. Mathur held senior finance positions at Telesis Technologies, Inc., NetSuite Inc. and KLA-
Tencor Corporation. Mr. Mathur holds a Bachelor of Arts in applied mathematics from Dartmouth College and an
M.B.A. from the Wharton School of Business at the University of Pennsylvania.

Senior Vice President, General Counsel and Secretary. Mr. Kim has served as the senior vice president, general
counsel and secretary since February 2013 and as our vice president, corporate legal since July 2010. Prior to his
tenure at Rambus, Mr. Kim held senior legal positions at Aricent Inc., a privately-held communications technology
company and Electronics for Imaging Inc., a digital printing technology company. Mr. Kim has also had significant
experience in private practice with the law firm of Wilson Sonsini Goodrich & Rosati, P.C., where he advised high
technology and emerging growth companies on mergers and acquisitions, private financings, public offerings,
securities compliance, public company reporting and corporate governance. Mr. Kim began his legal career as an
attorney with the United States Securities and Exchange Commission, Division of Corporation Finance, in
Washington, D.C. Mr. Kim is a member of both the California State Bar and New York State Bar, and received a
J.D. from the American University, Washington College of Law, and his bachelor’s degree from Boston
University.

11

 
 
 
 
 
   
   
 
 
 
   
   
 
 
Item 1A.

Risk Factors

RISK FACTORS

Because of the following factors, as well as other variables affecting our operating results, past financial performance may not be a reliable indicator of future
performance, and historical trends should not be used to anticipate results or trends in future periods. See also “Note Regarding Forward-Looking Statements” at
the beginning of this report.

12

Table of Contents

Risks Associated With Our Business, Industry and Market Conditions

The success of our business depends on sustaining or growing our licensing revenue and the failure to achieve such revenue would lead to a material decline
in our results of operations.

Our revenue consists mainly of patent and technology license fees paid for access to our patents, developed technology and development and support services
provided to our customers. Our ability to secure and renew the licenses from which our revenues are derived depends on our customers adopting our technology
and using it in the products they sell. Once secured, license revenue may be negatively affected by factors within and outside our control, including reductions in
our customers’ sales prices, sales volumes, our failure to timely complete engineering deliverables, and the terms of such licenses. In addition, our licensing cycle
for new licensees as well as renewals for existing licensees is lengthy, costly and unpredictable. We cannot provide any assurance that we will be successful in
signing new license agreements or renewing existing license agreements on equal or favorable terms or at all. If we do not achieve our revenue goals, our results of
operations could decline.

We have traditionally operated in, and may enter other, industries that are highly cyclical and competitive.

Our target customers are companies that develop and market high volume business and consumer products in semiconductors, computing, data centers,

networks, tablets, handheld devices, mobile applications, gaming and graphics, high-definition televisions, cryptography and data security. The electronics industry
is intensely competitive and has been impacted by rapid technological change, short product life cycles, cyclical market patterns, price erosion and increasing
foreign and domestic competition. We are subject to many risks beyond our control that influence whether or not we are successful in winning target customers or
retaining existing customers, including, primarily, competition in a particular industry, market acceptance of such customers' products and the financial resources
of such customers. In particular, DRAM manufacturers, which make up a significant part of our revenue, are prone to significant business cycles and have suffered
material losses and other adverse effects to their businesses, leading to industry consolidation from time-to-time that may result in loss of revenues under our
existing license agreements or loss of target customers. As a result of ongoing competition in the industries in which we operate and volatility in various economies
around the world, we may achieve a reduced number of licenses or may experience tightening of customers' operating budgets, difficulty or inability of our
customers to pay our licensing fees, lengthening of the approval process for new licenses and consolidation among our customers. All of these factors may
adversely affect the demand for our technology and may cause us to experience substantial fluctuations in our operating results.

We face competition from semiconductor and digital electronics products and systems companies, and other semiconductor intellectual property companies that
provide security cores that are available to the market. We believe the principal competition for our technologies may come from our prospective customers, some
of which are evaluating and developing products based on technologies that they contend or may contend will not require a license from us. Some of our
competitors use a system-level design approach similar to ours, including activities such as board and package design, power and signal integrity analysis, and
thermal management. Many of these companies are larger and may have better access to financial, technical and other resources than we possess.

To the extent that alternatives might provide comparable system performance at lower or similar cost to our technologies, or are perceived to require the

payment of no or lower royalties, or to the extent other factors influence the industry, our customers and prospective customers may adopt and promote alternative
technologies. Even to the extent we determine that such alternative technologies infringe our patents, there can be no assurance that we would be able to negotiate
agreements that would result in royalties being paid to us without litigation, which could be costly and the results of which would be uncertain.

In addition, our expansion into new markets subjects us to additional risks. We may have limited or no experience in new products and markets, and our

customers may not adopt our new offerings. These and other new offerings may present new and difficult challenges, which could negatively affect our operating
results.

We may have to invest more resources in research and development than anticipated, which could increase our operating expenses and negatively impact our
operating results.

If new competitors, technological advances by existing competitors, and/or development of new technologies or other competitive factors require us to invest

significantly greater resources than anticipated in our research and development efforts, our operating expenses could increase. If we are required to invest
significantly greater resources than anticipated in research and development efforts without an increase in revenue, our operating results would decline. We expect
these expenses to increase in the foreseeable future as our technology development efforts continue.

13

Table of Contents

Our revenue is concentrated in a few customers, and if we lose any of these customers through contract terminations or acquisitions, our revenue may
decrease substantially.

We have a high degree of revenue concentration. Our top five customers for each reporting period represented approximately 49%, 55% and 63% of our

revenue for the years ended December 31, 2018, 2017 and 2016, respectively. For 2018, revenue from Broadcom and NVIDIA each accounted for 10% or more of
our total revenue. For 2017 and 2016, revenue from Micron, Samsung and SK hynix each accounted for 10% or more of our total revenue. We expect to continue
to experience significant revenue concentration for the foreseeable future.

In addition, our license agreements are complex and some contain terms that require us to provide certain customers with the lowest royalty rate that we provide

to other customers for similar technologies, volumes and schedules. These clauses may limit our ability to effectively price differently among our customers, to
respond quickly to market forces, or otherwise to compete on the basis of price. These clauses may also require us to reduce royalties payable by existing
customers when we enter into or amend agreements with other customers. Any adjustment that reduces royalties from current customers or licensees may have a
material adverse effect on our operating results and financial condition.

We continue to negotiate with customers and prospective customers to enter into license agreements. Any future agreement may trigger our obligation to offer

comparable terms or modifications to agreements with our existing customers, which may be less favorable to us than the existing license terms. We expect
licensing fees will continue to vary based on our success in renewing existing license agreements and adding new customers, as well as the level of variation in our
customers' reported shipment volumes, sales price and mix, offset in part by the proportion of customer payments that are fixed. In particular, under our license
agreement with Samsung, the license fees payable by Samsung are subject to certain adjustments and conditions, and we therefore cannot provide assurances that
the revenues generated by this license will not decline in the future. In addition, some of our material license agreements may contain rights by the customer to
terminate for convenience, or upon certain other events, such as change of control, material breach, insolvency or bankruptcy proceedings. If we are unsuccessful
in entering into license agreements with new customers or renewing license agreements with existing customers, on favorable terms or at all, or if they are
terminated, our results of operations may decline significantly.

Our business and operations could suffer in the event of security breaches.

Attempts by others to gain unauthorized access to our information technology systems are becoming more sophisticated. These attempts, which might be
related to industrial or other espionage, include covertly introducing malware to our computers and networks and impersonating authorized users, among others.
We seek to detect and investigate all security incidents and to prevent their recurrence, but in some cases, we might be unaware of an incident or its magnitude and
effects. While we have not identified any material incidents of unauthorized access to date, the theft, unauthorized use or publication of our intellectual property
and/or confidential business information could harm our competitive position and reputation, reduce the value of our investment in research and development and
other strategic initiatives or otherwise adversely affect our business. To the extent that any future security breach results in inappropriate disclosure of our
customers' confidential information, we may incur liability.

Failures in our products and services or in the products of our customers, including those resulting from security vulnerabilities, defects, bugs or errors, could
harm our business.

Our products and services are highly technical and complex, and among our various businesses our products and services are crucial to providing security,
payment and other critical functions for our customers’ operations. Our products and services have from time to time contained and may in the future contain
undetected errors, bugs defects or other security vulnerabilities. Some errors in our products and services may only be discovered after a product or service has
been deployed and used by customers, and may in some cases only be detected under certain circumstances or after extended use. In addition, because the
techniques used by hackers to access or sabotage our products and services and other technologies change and evolve frequently and generally are not recognized
until launched against a target, we may be unable to anticipate, detect or prevent these techniques and may not address them in our data security technologies. Any
errors, bugs, defects or security vulnerabilities discovered in our solutions after commercial release could adversely affect our revenue, our customer relationships
and the market's perception of our products and services. We may not be able to correct any errors, bugs, defects, security flaws or vulnerabilities promptly, or at
all. Any breaches, defects, errors or vulnerabilities in our products and services could result in:

14

Table of Contents

•

•
•
•
•
•
•

expenditure of significant financial and research and development resources in efforts to analyze, correct, eliminate or work around breaches, errors, bugs or
defects or to address and eliminate vulnerabilities;
financial liability to customers for breach of certain contract provisions, including indemnification obligations;
loss of existing or potential customers;
delayed or lost revenue;
delay or failure to attain market acceptance;
negative publicity, which would harm our reputation; and
litigation, regulatory inquiries or investigations that would be costly and harm our reputation.

Some of our revenue is subject to the pricing policies of our customers over which we have no control.

We have no control over our customers' pricing of their products and there can be no assurance that licensed products will be competitively priced or will sell in
significant volumes. Any premium charged by our customers in the price of memory and controller chips or other products over alternatives must be reasonable. If
the benefits of our technology do not match the price premium charged by our customers, the resulting decline in sales of products incorporating our technology
could harm our operating results.

Our licensing cycle is lengthy and costly, and our marketing and licensing efforts may be unsuccessful.

The process of persuading customers to adopt and license our chip interface, lighting, data security, and other technologies can be lengthy.  Even if successful,

there can be no assurance that our technologies will be used in a product that is ultimately brought to market, achieves commercial acceptance or results in
significant royalties to us. We generally incur significant marketing and sales expenses prior to entering into our license agreements, generating a license fee and
establishing a royalty stream from each customer. The length of time it takes to establish a new licensing relationship can take many months or even years. We
may incur costs in any particular period before any associated revenue stream begins, if at all. If our marketing and sales efforts are very lengthy or unsuccessful,
then we may face a material adverse effect on our business and results of operations as a result of failure to obtain or an undue delay in obtaining royalties.

Future revenue is difficult to predict for several reasons, and our failure to predict revenue accurately may result in our stock price declining.

Our lengthy license negotiation cycles could make our future revenue difficult to predict because we may not be successful in entering into or renewing licenses

with our customers on our anticipated timelines.

In addition, while some of our license agreements provide for fixed, quarterly royalty payments, many of our license agreements provide for volume-based
royalties, and may also be subject to caps on royalties in a given period. The sales volume and prices of our customers' products in any given period can be difficult
to predict. In addition, we began applying the new revenue recognition standard (ASC 606) during the first quarter of 2018, as required, and we anticipate that our
revenue will vary greatly from quarter to quarter. As a result of the foregoing items, our actual results may differ substantially from analyst estimates or our
forecasts in any given quarter.

Also, a portion of our revenue comes from development and support services provided to our customers. Depending upon the nature of the services, a portion of

the related revenue may be recognized ratably over the support period, or may be recognized according to contract revenue accounting. Contract revenue
accounting may result in deferral of the service fees to the completion of the contract, or may result in the recognition of service fees over the period in which
services are performed on a percentage-of-completion basis.

In addition, once we commercially launch our products, the sales volume of and resulting revenue from such products in any given period will be difficult to

predict.

We may fail to meet our publicly announced guidance or other expectations about our business, which would likely cause our stock price to decline.

We provide guidance regarding our expected financial and business performance including our anticipated future revenues, operating expenses and other
financial and operation metrics. We enhanced our guidance following implementation of Accounting Standards Update (ASU) No. 2014-09, Revenue from
Contracts with Customers in Accounting Standards Codification (ASC) Topic 606 (“ASC 606”, “the New Revenue Standard”) in the first quarter of 2018.

15

Table of Contents

Correctly identifying the key factors affecting business conditions and predicting future events is an inherently uncertain process. Any guidance that we provide

may not always be accurate, or may vary from actual results, due to our inability to correctly identify and quantify risks and uncertainties to our business and to
quantify their impact on our financial performance. We offer no assurance that such guidance will ultimately be accurate, and investors should treat any such
guidance with appropriate caution. If we fail to meet our guidance or if we find it necessary to revise such guidance, even if such failure or revision is seemingly
insignificant, investors and analysts may lose confidence in us and the market value of our common stock could be materially adversely affected.

Changes in accounting principles and guidance could result in unfavorable accounting charges or effects.

We prepare our financial statements in accordance with accounting principles generally accepted in the United States and these principles are subject to
interpretation by the SEC and various bodies. A change in these principles or application guidance, or in their interpretations, may have a material effect on our
reported results, as well as our processes and related controls, and may retroactively affect previously reported results. For example, the New Revenue Standard, as
amended, is effective for us on January 1, 2018. We adopted the New Revenue Standard on a modified retrospective basis, with a cumulative-effect adjustment to
the opening balance of accumulated deficit on January 1, 2018. The New Revenue Standard materially impacted the timing of revenue recognition for our fixed-fee
intellectual property (IP) licensing arrangements (including certain fixed-fee agreements that license our existing IP portfolio as well as IP added to our portfolio
during the license term) as a majority of such revenue would be recognized at inception of the license term, as opposed to over time as is the case under prior U.S.
GAAP, and we are required to compute and recognize interest income over time for certain licensing arrangements as control over the IP generally transfers
significantly in advance of cash being received from customers. The impact of the adoption of the New Revenue Standard did not have a material impact on our
other revenue streams. We have also enhanced the form and content of some of our guidance metrics that we provide following implementation of the New
Revenue Standard. We expect that any change to current revenue recognition practices may significantly increase volatility in our quarterly revenue, financial
results and trends, and may impact our stock price.

We have in the past made and may in the future make acquisitions or enter into mergers, strategic investments, sales of assets or other arrangements that may
not produce expected operating and financial results.

From time to time, we engage in acquisitions, strategic transactions, strategic investments and potential discussions with respect thereto. Many of our

acquisitions or strategic investments entail a high degree of risk, including those involving new areas of technology and such investments may not become liquid
for several years after the date of the investment, if at all. Our acquisitions or strategic investments may not provide the advantages that we anticipated or generate
the financial returns we expect, including if we are unable to close any pending acquisitions. For example, for any pending or completed acquisitions, we may
discover unidentified issues not discovered in due diligence, and we may be subject to liabilities that are not covered by indemnification protection or become
subject to litigation. Achieving the anticipated benefits of business acquisitions depends in part upon our ability to integrate the acquired businesses in an efficient
and effective manner. The integration of companies that have previously operated independently may result in significant challenges, including, among others:
retaining key employees; successfully integrating new employees, business systems and technology; retaining customers of the acquired business; minimizing the
diversion of management's and other employees’ attention from ongoing business matters; coordinating geographically separate organizations; consolidating
research and development operations; and consolidating corporate and administrative infrastructures.

Our strategic investments in new areas of technology may involve significant risks and uncertainties, including distraction of management from current

operations, greater than expected liabilities and expenses, inadequate return of capital, and unidentified issues not discovered in due diligence. These investments
are inherently risky and may not be successful.

In addition, we may record impairment charges related to our acquisitions or strategic investments. Any losses or impairment charges that we incur related to
acquisitions, strategic investments or sales of assets will have a negative impact on our financial results and the market value of our common stock, and we may
continue to incur new or additional losses related to acquisitions or strategic investments.

We may have to incur debt or issue equity securities to pay for any future acquisition, which debt could involve restrictive covenants or which equity security

issuance could be dilutive to our existing stockholders.

From time to time, we may also divest certain assets. These divestitures or proposed divestitures may involve the loss of revenue and/or potential customers,

and the market for the associated assets may dictate that we sell such assets for less than what we paid. In addition, in connection with any asset sales or
divestitures, we may be required to provide certain

16

Table of Contents

representations, warranties and covenants to buyers. While we would seek to ensure the accuracy of such representations and warranties and fulfillment of any
ongoing obligations, we may not be completely successful and consequently may be subject to claims by a purchaser of such assets.

A substantial portion of our revenue is derived from sources outside of the United States and this revenue and our business generally are subject to risks
related to international operations that are often beyond our control.

For the years ended December 31, 2018, 2017 and 2016, revenues received from our international customers constituted approximately 44%, 58% and 64%,

respectively, of our total revenue. We expect that future revenue derived from international sources will continue to represent a significant portion of our total
revenue.

To the extent that customer sales are not denominated in U.S. dollars, any royalties which are based on a percentage of the customers' sales that we receive as a
result of such sales could be subject to fluctuations in currency exchange rates. In addition, if the effective price of licensed products sold by our foreign customers
were to increase as a result of fluctuations in the exchange rate of the relevant currencies, demand for licensed products could fall, which in turn would reduce our
royalties. We do not use financial instruments to hedge foreign exchange rate risk.

We currently have international business operations in the United Kingdom and the Netherlands, international design operations in Canada, India, Finland and
France, and business development operations in Australia, China, Japan, Korea, Singapore and Taiwan. Our international operations and revenue are subject to a
variety of risks which are beyond our control, including:

•

•
•
•
•
•

•
•
•

•

•
•
•

hiring, maintaining and managing a workforce and facilities remotely and under various legal systems, including compliance with local labor and
employment laws;
non-compliance with our code of conduct or other corporate policies;
natural disasters, acts of war, terrorism, widespread illness or security breaches;
export controls, tariffs, import and licensing restrictions and other trade barriers;
profits, if any, earned abroad being subject to local tax laws and not being repatriated to the United States or, if repatriation is possible, limited in amount;
adverse tax treatment of revenue from international sources and changes to tax codes, including being subject to foreign tax laws and being liable for paying
withholding, income or other taxes in foreign jurisdictions;
unanticipated changes in foreign government laws and regulations;
increased financial accounting and reporting burdens and complexities;
lack of protection of our intellectual property and other contract rights by jurisdictions in which we may do business to the same extent as the laws of the
United States;
potential vulnerability to computer system, internet or other systemic attacks, such as denial of service, viruses or other malware which may be caused by
criminals, terrorists or other sophisticated organizations;
social, political and economic instability;
geopolitical issues, including changes in diplomatic and trade relationships; and
cultural differences in the conduct of business both with customers and in conducting business in our international facilities and international sales offices.

We and our customers are subject to many of the risks described above with respect to companies which are located in different countries. There can be no
assurance that one or more of the risks associated with our international operations will not result in a material adverse effect on our business, financial condition
or results of operations.

Weak global economic conditions may adversely affect demand for the products and services of our customers.

Our operations and performance depend significantly on worldwide economic conditions. Uncertainty about global or regional economic and political

conditions poses a risk as consumers and businesses may postpone spending in response to tighter credit, negative financial news and declines in income or asset
values, which could have a material negative effect on the demand for the products of our customers in the foreseeable future. If our customers experience reduced
demand for their products as a result of global or regional economic conditions or otherwise, this could result in reduced royalty revenue and our business and
results of operations could be harmed.

If our counterparties are unable to fulfill their financial and other obligations to us, our business and results of operations may be affected adversely .

17

Table of Contents

Any downturn in economic conditions or other business factors could threaten the financial health of our counterparties, including companies with which we

have entered into licensing and/or settlement agreements, and their ability to fulfill their financial and other obligations to us. Such financial pressures on our
counterparties may eventually lead to bankruptcy proceedings or other attempts to avoid financial obligations that are due to us. Because bankruptcy courts have
the power to modify or cancel contracts of the petitioner which remain subject to future performance and alter or discharge payment obligations related to pre-
petition debts, we may receive less than all of the payments that we would otherwise be entitled to receive from any such counterparty as a result of bankruptcy
proceedings.

If we are unable to attract and retain qualified personnel, our business and operations could suffer.

Our success is dependent upon our ability to identify, attract, compensate, motivate and retain qualified personnel, especially engineers, senior management and

other key personnel. The loss of the services of any key employees could be disruptive to our development efforts, business relationships and strategy, and could
cause our business and operations to suffer.

Recently, we have experienced significant changes in our management team, including in the role of chief executive officer and other senior executives. Our

future success depends in large part upon the continued service and enhancement of our management team and our employees. If there are further changes in
management, such changes could be disruptive and could negatively affect our sales, operations, culture, future recruiting efforts and strategic direction.
Competition for qualified executives is intense and if we are unable to compensate our key talent appropriately and continue expanding our management team, or
successfully integrate new additions to our management team in a manner that enables us to scale our business and operations effectively, our ability to operate
effectively and efficiently could be limited or negatively impacted. In addition, changes in key management positions may temporarily affect our financial
performance and results of operations as new management becomes familiar with our business, processes and strategy. The loss of any of our key personnel, or our
inability to attract, integrate and retain qualified employees, could require us to dedicate significant financial and other resources to such personnel matters, disrupt
our operations and seriously harm our operations and business.

We are subject to various government restrictions and regulations, including on the sale of products and services that use encryption technology and those
related to privacy and other consumer protection matters.

Various countries have adopted controls, license requirements and restrictions on the export, import and use of products or services that contain encryption
technology. In addition, governmental agencies have proposed additional requirements for encryption technology, such as requiring the escrow and governmental
recovery of private encryption keys. Restrictions on the sale or distribution of products or services containing encryption technology may impact our ability to
license data security technologies to the manufacturers and providers of such products and services in certain markets or may require us or our customers to make
changes to the licensed data security technology that is embedded in such products to comply with such restrictions. Government restrictions, or changes to the
products or services our customers to comply with such restrictions, could delay or prevent the acceptance and use of such customers' products and services. In
addition, the United States and other countries have imposed export controls that prohibit the export of encryption technology to certain countries, entities and
individuals. Our failure to comply with export and use regulations concerning encryption technology could subject us to sanctions and penalties, including fines,
and suspension or revocation of export or import privileges.

We are subject to a variety of laws and regulations in the United States, the European Union and other countries that involve, for example, user privacy, data
protection and security, content and consumer protection. A number of proposals are pending before federal, state, and foreign legislative and regulatory bodies
that could significantly affect our business. For example, in 2016, a new EU data protection regime, the General Data Protection Regulation (“GDPR”) was
adopted, with it fully effective on May 25, 2018. The GDPR may require us to modify our existing practices with respect to the collection, use, and disclosure of
data. The GDPR provides for significant penalties in the case of non-compliance of up to €20 million or four percent of worldwide annual revenues, whichever is
greater. The GDPR and other existing and proposed laws and regulations can be costly to comply with and can delay or impede the development of new products,
result in negative publicity, increase our operating costs and subject us to claims or other remedies.

In accordance with the Dodd-Frank Wall Street Reform and Consumer Protection Act, the SEC established new disclosure and reporting requirements for those
companies that use "conflict" minerals mined from the Democratic Republic of Congo and adjoining countries in their products, whether or not these products are
manufactured by third parties. These requirements could affect the sourcing and availability of minerals that are used in the manufacture of our products. We have
to date incurred costs and expect to incur significant additional costs associated with complying with the disclosure requirements, including for example, due
diligence in regard to the sources of any conflict minerals used in our products, in addition to the cost of remediation and other changes to products, processes, or
sources of supply as a consequence of such verification activities.

18

Table of Contents

Additionally, we may face reputational challenges with our customers and other stakeholders if we are unable to sufficiently verify the origins of all minerals used
in our products through the due diligence procedures that we implement. We may also face challenges with government regulators and our customers and suppliers
if we are unable to sufficiently verify that the metals used in our products are conflict free.

Our operations are subject to risks of natural disasters, acts of war, terrorism, widespread illness or security breach at our domestic and international
locations, any one of which could result in a business stoppage and negatively affect our operating results.

Our business operations depend on our ability to maintain and protect our facilities, computer systems and personnel, which are primarily located in the San
Francisco Bay Area in the United States, the United Kingdom, the Netherlands, India and Australia. The San Francisco Bay Area is in close proximity to known
earthquake fault zones. Our facilities and transportation for our employees are susceptible to damage from earthquakes and other natural disasters such as fires,
floods and similar events. Should a catastrophe disable our facilities, we do not have readily available alternative facilities from which we could conduct our
business, so any resultant work stoppage could have a negative effect on our operating results. We also rely on our network infrastructure and technology systems
for operational support and business activities which are subject to physical and cyber damage, and also susceptible to other related vulnerabilities common to
networks and computer systems. Acts of terrorism, widespread illness, war and any event that causes failures or interruption in our network infrastructure and
technology systems could have a negative effect at our international and domestic facilities and could harm our business, financial condition, and operating results.

We do not have extensive experience in manufacturing and marketing products and, as a result, may be unable to sustain and grow a profitable commercial
market for new and existing products.

We do not have extensive experience in creating, manufacturing and marketing products, including our CryptoManager platform and new offerings that have
resulted from our acquisition of SCS in the mobile credential and smart card solution spaces, and our acquisitions of the assets of the Snowbush IP group and the
Memory Interconnect Business. These and other new offerings may present new and difficult challenges, and we may be subject to claims if customers of these
offerings experience delays, failures, non-performance or other quality issues. In particular, we may experience difficulties with product design, qualification,
manufacturing, marketing or certification that could delay or prevent our development, introduction or marketing of new products. Although we intend to design
our products to be fully compliant with applicable industry standards, proprietary enhancements may not in the future result in full conformance with existing
industry standards under all circumstances.

If we fail to introduce products that meet the demand of our customers or penetrate new markets in which we expend significant resources, our revenues will
decrease over time and our financial condition could suffer. Additionally, if we concentrate resources on a new market that does not prove profitable or sustainable,
it could damage our reputation and limit our growth, and our financial condition could decline.

We rely on a number of third-party providers for data center hosting facilities, equipment, maintenance and other services, and the loss of, or problems with,
one or more of these providers may impede our growth or cause us to lose customers.

We rely on third-party providers to supply data center hosting facilities, equipment, maintenance and other services in order to provide some of our services,
including in our offerings of our advanced mobile payment platform and smart ticketing platform, and have entered into various agreements for such services. The
continuous availability of our service depends on the operations of those facilities, on a variety of network service providers and on third-party vendors. In
addition, we depend on our third-party facility providers’ ability to protect these facilities against damage or interruption from natural disasters, power or
telecommunications failures, criminal acts, cyber-attacks and similar events. If there are any lapses of service or damage to a facility, we could experience lengthy
interruptions in our service as well as delays and additional expenses in arranging new facilities and services. Even with current and planned disaster recovery
arrangements, our business could be harmed. Any interruptions or delays in our service, whether as a result of third-party error, our own error, natural disasters,
criminal acts, security breaches or other causes, whether accidental or willful, could harm our relationships with customers, harm our reputation and cause our
revenue to decrease and/or our expenses to increase. Also, in the event of damage or interruption, our insurance policies may not adequately compensate us for any
losses that we may incur. These factors in turn could further reduce our revenue, subject us to liability and cause us to issue credits or cause us to lose customers,
any of which could materially adversely affect our business.

19

Table of Contents

We rely on third parties for a variety of services, including manufacturing, and these third parties’ failure to perform these services adequately could
materially and adversely affect our business.

We rely on third parties for a variety of services, including our manufacturing supply chain partners and third parties within our sales and distribution channels.

Certain of these third parties are, and may be, our sole manufacturer or sole source of production materials. If we fail to manage our relationship with these
manufacturers and suppliers effectively, or if they experience delays, disruptions, capacity constraints or quality control problems in their operations, our ability to
ship products to our customers could be impaired and our competitive position and reputation could be harmed. In addition, any adverse change in any of our
manufacturers and suppliers’ financial or business condition could disrupt our ability to supply quality products to our customers. If we are required to change our
manufacturers, we may lose revenue, incur increased costs and damage our end-customer relationships. In addition, qualifying a new manufacturer and
commencing production can be an expensive and lengthy process. If our third party manufacturers or suppliers are unable to provide us with adequate supplies of
high-quality products for any other reason, we could experience a delay in our order fulfillment, and our business, operating results and financial condition would
be adversely affected. In the event these and other third parties we rely on fail to provide their services adequately, including as a result of errors in their systems or
events beyond their control, or refuse to provide these services on terms acceptable to us or at all, and we are not able to find suitable alternatives, our business may
be materially and adversely affected. In addition, our orders may represent a relatively small percentage of the overall orders received by our manufacturers from
their customers. As a result, fulfilling our orders may not be considered a priority in the event our manufacturers are constrained in their ability to fulfill all of their
customer obligations in a timely manner. If our manufacturers are unable to provide us with adequate supplies of high-quality products, or if we or our
manufacturers are unable to obtain adequate quantities of components, it could cause a delay in our order fulfillment, in which case our business, operating results
and financial condition could be adversely affected.

Warranty, service level agreement and product liability claims brought against us could cause us to incur significant costs and adversely affect our operating
results as well as our reputation and relationships with customers.

We may from time to time be subject to warranty, service level agreement and product liability claims with regard to product performance and our services. We

could incur material losses as a result of warranty, support, repair or replacement costs in response to customer complaints or in connection with the resolution of
contemplated or actual legal proceedings relating to such claims. In addition to potential losses arising from claims and related legal proceedings, warranty and
product liability claims could affect our reputation and our relationship with customers. We generally attempt to limit the maximum amount of indemnification or
liability that we could be exposed to under our contracts, however, this is not always possible.

Any failure in our delivery of high-quality technical support services may adversely affect our relationships with our customers and our financial results.

Our customers depend on our support organization to resolve technical issues and provide ongoing maintenance relating to our products and services. We may
be unable to respond quickly enough to accommodate short-term increases in customer demand for support services. Increased customer demand for these services,
without corresponding revenues, could increase costs and adversely affect our operating results. In addition, our sales process is highly dependent on our offerings
and business reputation and on positive recommendations from our existing customers. Any failure to maintain high-quality technical support, or a market
perception that we do not maintain high-quality support, could adversely affect our reputation, our ability to sell our solutions to existing and prospective
customers, and our business, operating results and financial position.

Certain software that we use in certain of our products is licensed from third parties and, for that reason, may not be available to us in the future, which has
the potential to delay product development and production or cause us to incur additional expense, which could materially adversely affect our business,
financial condition, operating results and cash flow.

Some of our products and services contain software licensed from third parties. Some of these licenses may not be available to us in the future on terms that are
acceptable to us or allow our products to remain competitive. The loss of these licenses or the inability to maintain any of them on commercially acceptable terms
could delay development of future offerings or the enhancement of existing products and services. We may also choose to pay a premium price for such a license
in certain circumstances where continuity of the licensed product would outweigh the premium cost of the license. The unavailability of these licenses or the
necessity of agreeing to commercially unreasonable terms for such licenses could materially adversely affect our business, financial condition, operating results
and cash flow.

20

Table of Contents

Certain software we use is from open source code sources, which, under certain circumstances, may lead to unintended consequences and, therefore, could
materially adversely affect our business, financial condition, operating results and cash flow.

We use open source software in our services, including our advanced mobile payment platform and smart ticketing platform, and we intend to continue to use

open source software in the future. From time to time, there have been claims challenging the ownership of open source software against companies that
incorporate open source software into their products or alleging that these companies have violated the terms of an open source license. As a result, we could be
subject to lawsuits by parties claiming ownership of what we believe to be open source software or alleging that we have violated the terms of an open source
license. Litigation could be costly for us to defend, have a negative effect on our operating results and financial condition or require us to devote additional
research and development resources to change our solutions. In addition, if we were to combine our proprietary software solutions with open source software in
certain manners, we could, under certain open source licenses, be required to publicly release the source code of our proprietary software solutions. If we
inappropriately use open source software, we may be required to re-engineer our solutions, discontinue the sale of our solutions, release the source code of our
proprietary software to the public at no cost or take other remedial actions. There is a risk that open source licenses could be construed in a way that could impose
unanticipated conditions or restrictions on our ability to commercialize our solutions, which could adversely affect our business, operating results and financial
condition.

Our business and operating results could be harmed if we undertake any restructuring activities.

From time to time, we may undertake restructurings of our business, including discontinuing certain products, services and technologies and planned reductions

in force. There are several factors that could cause restructurings to have adverse effects on our business, financial condition and results of operations. These
include potential disruption of our operations, the development of our technology, the deliveries to our customers and other aspects of our business. Loss of sales,
service and engineering talent, in particular, could damage our business. Any restructuring would require substantial management time and attention and may
divert management from other important work. Employee reductions or other restructuring activities also would cause us to incur restructuring and related
expenses such as severance expenses. Moreover, we could encounter delays in executing any restructuring plans, which could cause further disruption and
additional unanticipated expense.

Problems with our information systems could interfere with our business and could adversely impact our operations.

We rely on our information systems and those of third parties for fulfilling licensing and contractual obligations, processing customer orders, delivering

products, providing services and support to our customers, billing and tracking our customer orders, performing accounting operations and otherwise running our
business. If our systems fail, our disaster and data recovery planning and capacity may prove insufficient to enable timely recovery of important functions and
business records. Any disruption in our information systems and those of the third parties upon whom we rely could have a significant impact on our business.
Additionally, our information systems may not support new business models and initiatives and significant investments could be required in order to upgrade them.
For example, in connection with our adoption of the New Revenue Standard, we plan to augment our systems with new revenue accounting software, utilizing
internal and third party resources. Delays in adapting our information systems to address new business models and accounting standards could limit the success or
result in the failure of such initiatives and impair the effectiveness of our internal controls. Even if we do not encounter these adverse effects, the implementation
of these enhancements may be much more costly than we anticipated. If we are unable to successfully implement the information systems enhancements as
planned, our operating results could be negatively impacted.

21

Table of Contents

Risks Related to Capitalization Matters and Corporate Governance

The price of our common stock may continue to fluctuate.

Our common stock is listed on The NASDAQ Global Select Market under the symbol “RMBS.” The trading price of our common stock has at times

experienced price volatility and may continue to fluctuate significantly in response to various factors, some of which are beyond our control.  Some of these factors
include:

•

•
•
•

•
•
•
•
•
•

any progress, or lack of progress, real or perceived, in the development of products that incorporate our innovations and technology companies' acceptance
of our products, including the results of our efforts to expand into new target markets;
our signing or not signing new licenses and the loss of strategic relationships with any customer;
announcements of technological innovations or new products by us, our customers or our competitors;
changes in our strategies, including changes in our licensing focus and/or acquisitions or dispositions of companies or businesses with business models or
target markets different from our core;
positive or negative reports by securities analysts as to our expected financial results and business developments;
developments with respect to patents or proprietary rights and other events or factors;
new litigation and the unpredictability of litigation results or settlements;
repurchases of our common stock on the open market;
issuance of additional securities by us, including in acquisitions; and
changes in accounting pronouncements, including implementation of the New Revenue Standard.

In addition, the stock market in general, and prices for companies in our industry in particular, have experienced extreme volatility that often has been unrelated

to the operating performance of such companies. These broad market and industry fluctuations may adversely affect the price of our common stock, regardless of
our operating performance.

We have outstanding senior convertible notes in an aggregate principal amount totaling $172.5 million. Because these notes are convertible into shares of our
common stock, volatility or depressed prices of our common stock could have a similar effect on the trading price of such notes. In addition, the existence of these
notes may encourage short selling in our common stock by market participants because the conversion of the notes could depress the price of our common stock.

We have been party to, and may in the future be subject to, lawsuits relating to securities law matters which may result in unfavorable outcomes and
significant judgments, settlements and legal expenses which could cause our business, financial condition and results of operations to suffer.

We and certain of our current and former officers and directors, as well as our current auditors, were subject from 2006 to 2011 to several stockholder
derivative actions, securities fraud class actions and/or individual lawsuits filed in federal court against us and certain of our current and former officers and
directors. The complaints generally alleged that the defendants violated the federal and state securities laws and stated state law claims for fraud and breach of
fiduciary duty. Although to date these complaints have either been settled or dismissed, the amount of time to resolve any future lawsuits is uncertain, and these
matters could require significant management and financial resources. Unfavorable outcomes and significant judgments, settlements and legal expenses in
litigation related to any future securities law claims could have material adverse impacts on our business, financial condition, results of operations, cash flows and
the trading price of our common stock.

We are leveraged financially, which could adversely affect our ability to adjust our business to respond to competitive pressures and to obtain sufficient funds
to satisfy our future research and development needs, to protect and enforce our intellectual property, and to meet other needs.

We have material indebtedness. In November 2017, we issued $172.5 million aggregate principal amount of our 2023 Notes, the entire amount of which

remains outstanding. The degree to which we are leveraged could have negative consequences, including, but not limited to, the following:

• we may be more vulnerable to economic downturns, less able to withstand competitive pressures and less flexible in responding to changing business and

•

•

economic conditions;
our ability to obtain additional financing in the future for working capital, capital expenditures, acquisitions, litigation, general corporate or other purposes
may be limited;
a substantial portion of our cash flows from operations in the future may be required for the payment of interest and principal when due at maturity in
February 2023; and

• we may be required to make cash payments upon any conversion of the 2023 Notes, which would reduce our cash on hand.

22

Table of Contents

A failure to comply with the covenants and other provisions of our debt instruments could result in events of default under such instruments, which could

permit acceleration of all of our outstanding 2023 Notes. Any required repurchase of the 2023 Notes as a result of a fundamental change or acceleration of the 2023
Notes would reduce our cash on hand such that we would not have those funds available for use in our business.

If we are at any time unable to generate sufficient cash flows from operations to service our indebtedness when payment is due, we may be required to attempt
to renegotiate the terms of the instruments relating to the indebtedness, seek to refinance all or a portion of the indebtedness or obtain additional financing. There
can be no assurance that we will be able to successfully renegotiate such terms, that any such refinancing would be possible or that any additional financing could
be obtained on terms that are favorable or acceptable to us.

Compliance with changing regulation of corporate governance and public disclosure may result in additional expenses.

Changing laws, regulations and standards relating to corporate governance and public disclosure have historically created uncertainty for companies such as
ours. Any new or changed laws, regulations and standards are subject to varying interpretations due to their lack of specificity, and as a result, their application in
practice may evolve over time as new guidance is provided by regulatory and governing bodies. This could result in continuing uncertainty regarding compliance
matters and higher costs necessitated by ongoing revisions to disclosure and governance practices.

Our certificate of incorporation and bylaws, Delaware law, our outstanding convertible notes and certain other agreements contain provisions that could
discourage transactions resulting in a change in control, which may negatively affect the market price of our common stock.

Our certificate of incorporation, our bylaws and Delaware law contain provisions that might enable our management to discourage, delay or prevent a change in

control. In addition, these provisions could limit the price that investors would be willing to pay in the future for shares of our common stock. Pursuant to such
provisions:

•

•
•
•

•

•
•

our board of directors is authorized, without prior stockholder approval, to create and issue preferred stock, commonly referred to as “blank check”
preferred stock, with rights senior to those of common stock, which means that a stockholder rights plan could be implemented by our board;
our board of directors is staggered into two classes, only one of which is elected at each annual meeting;
stockholder action by written consent is prohibited;
nominations for election to our board of directors and the submission of matters to be acted upon by stockholders at a meeting are subject to advance notice
requirements;
certain provisions in our bylaws and certificate of incorporation such as notice to stockholders, the ability to call a stockholder meeting, advance notice
requirements and action of stockholders by written consent may only be amended with the approval of stockholders holding 66 2/3% of our outstanding
voting stock;
our stockholders have no authority to call special meetings of stockholders; and
our board of directors is expressly authorized to make, alter or repeal our bylaws.

We are also subject to Section 203 of the Delaware General Corporation Law, which provides, subject to enumerated exceptions, that if a person acquires 15%
or more of our outstanding voting stock, the person is an “interested stockholder” and may not engage in any “business combination” with us for a period of three
years from the time the person acquired 15% or more of our outstanding voting stock.

Certain provisions of our outstanding Notes could make it more difficult or more expensive for a third party to acquire us. Upon the occurrence of certain
transactions constituting a fundamental change, holders of such Notes will have the right, at their option, to require us to repurchase, at a cash repurchase price
equal to 100% of the principal amount plus accrued and unpaid interest on such Notes, all or a portion of their Notes. We may also be required to increase the
conversion rate of such Notes in the event of certain fundamental changes.

Unanticipated changes in our tax rates or in the tax laws and regulations could expose us to additional income tax liabilities which could affect our operating
results and financial condition.

We are subject to income taxes in both the United States and various foreign jurisdictions. Significant judgment is required in determining our worldwide
provision for income taxes and, in the ordinary course of business, there are many transactions and calculations where the ultimate tax determination is uncertain.
Our effective tax rate could be adversely affected by changes in the mix of earnings in countries with differing statutory tax rates, changes in the valuation of
deferred tax assets and liabilities, changes in tax laws and regulations as well as other factors. Our tax determinations are regularly subject to audit by tax
authorities and developments in those audits could adversely affect our income tax provision, and we are currently undergoing such audits of certain of our tax
returns. Although we believe that our tax estimates are reasonable, the final

23

Table of Contents

determination of tax audits or tax disputes may be different from what is reflected in our historical income tax provisions which could affect our operating results.

Litigation, Regulation and Business Risks Related to our Intellectual Property

Adverse litigation results could affect our business.

We may be subject to legal claims or regulatory matters involving consumer, stockholder, employment, competition, intellectual property and other issues on a

global basis. Litigation can be lengthy, expensive and disruptive to our operations, and results cannot be predicted with certainty. An adverse decision could
include monetary damages or, in cases for which injunctive relief is sought, an injunction prohibiting us from manufacturing or selling one or more of our products
or technologies. If we were to receive an unfavorable ruling on a matter, our business, operating results or financial condition could be materially harmed.

We have in the past, and may in the future, become engaged in litigation stemming from our efforts to protect and enforce our patents and intellectual property
and make other claims, which could adversely affect our intellectual property rights, distract our management and cause substantial expenses and declines in
our revenue and stock price.

We seek to diligently protect our intellectual property rights and will continue to do so. While we are not currently involved in intellectual property litigation,

any future litigation, whether or not determined in our favor or settled by us, would be expected to be costly, may cause delays applicable to our business
(including delays in negotiating licenses with other actual or potential customers), would be expected to discourage future design partners, would tend to impair
adoption of our existing technologies and would divert the efforts and attention of our management and technical personnel from other business operations. In
addition, we may be unsuccessful in any litigation if we have difficulty obtaining the cooperation of former employees and agents who were involved in our
business during the relevant periods related to our litigation and are now needed to assist in cases or testify on our behalf. Furthermore, any adverse determination
or other resolution in litigation could result in our losing certain rights beyond the rights at issue in a particular case, including, among other things: our being
effectively barred from suing others for violating certain or all of our intellectual property rights; our patents being held invalid or unenforceable or not infringed;
our being subjected to significant liabilities; our being required to seek licenses from third parties; our being prevented from licensing our patented technology; or
our being required to renegotiate with current customers on a temporary or permanent basis.

From time to time, we are subject to proceedings by government agencies that may result in adverse determinations against us and could cause our revenue to
decline substantially.

An adverse resolution by or with a governmental agency could result in severe limitations on our ability to protect and license our intellectual property, and
could cause our revenue to decline substantially. Third parties have and may attempt to use adverse findings by a government agency to limit our ability to enforce
or license our patents in private litigations, to challenge or otherwise act against us with respect to such government agency proceedings.

Further, third parties have sought and may seek review and reconsideration of the patentability of inventions claimed in certain of our patents by the U.S. Patent
and Trademark Office (“USPTO”) and/or the European Patent Office (the “EPO”). Any re-examination proceedings may be reviewed by the USPTO's Patent Trial
and Appeal Board (“PTAB”). The PTAB and the related former Board of Patent Appeals and Interferences have previously issued decisions in a few cases, finding
some challenged claims of Rambus' patents to be valid, and others to be invalid. Decisions of the PTAB are subject to further USPTO proceedings and/or appeal to
the Court of Appeals for the Federal Circuit. A final adverse decision, not subject to further review and/or appeal, could invalidate some or all of the challenged
patent claims and could also result in additional adverse consequences affecting other related U.S. or European patents, including in any intellectual property
litigation. If a sufficient number of such patents are impaired, our ability to enforce or license our intellectual property would be significantly weakened and could
cause our revenue to decline substantially.

The pendency of any governmental agency acting as described above may impair our ability to enforce or license our patents or collect royalties from existing

or potential customers, as any litigation opponents may attempt to use such proceedings to delay or otherwise impair any pending cases and our existing or
potential customers may await the final outcome of any proceedings before agreeing to new licenses or to paying royalties.

24

Table of Contents

Litigation or other third-party claims of intellectual property infringement could require us to expend substantial resources and could prevent us from
developing or licensing our technology on a cost-effective basis.

Our research and development programs are in highly competitive fields in which numerous third parties have issued patents and patent applications with
claims closely related to the subject matter of our programs. We have also been named in the past, and may in the future be named, as a defendant in lawsuits
claiming that our technology infringes upon the intellectual property rights of third parties. As we develop additional products and technology, we may face claims
of infringement of various patents and other intellectual property rights by third parties. In the event of a third-party claim or a successful infringement action
against us, we may be required to pay substantial damages, to stop developing and licensing our infringing technology, to develop non-infringing technology, and
to obtain licenses, which could result in our paying substantial royalties or our granting of cross licenses to our technologies. We may not be able to obtain licenses
from other parties at a reasonable cost, or at all, which could cause us to expend substantial resources, or result in delays in, or the cancellation of, new products.
Moreover, customers and/or suppliers of our products may seek indemnification for alleged infringement of intellectual property rights.  We could be liable for
direct and consequential damages and expenses including attorneys’ fees. A future obligation to indemnify our customers and/or suppliers may harm our business,
financial condition and operating results.

If we are unable to protect our inventions successfully through the issuance and enforcement of patents, our operating results could be adversely affected.

We have an active program to protect our proprietary inventions through the filing of patents. There can be no assurance, however, that:

any current or future U.S. or foreign patent applications will be approved and not be challenged by third parties;
our issued patents will protect our intellectual property and not be challenged by third parties;
the validity of our patents will be upheld;
our patents will not be declared unenforceable;
the patents of others will not have an adverse effect on our ability to do business;

•
•
•
•
•
• Congress or the U.S. courts or foreign countries will not change the nature or scope of rights afforded patents or patent owners or alter in an adverse way the

•

•
•
•

process for seeking or enforcing patents;
changes in law will not be implemented, or changes in interpretation of such laws will occur, that will affect our ability to protect and enforce our patents
and other intellectual property;
new legal theories and strategies utilized by our competitors will not be successful;
others will not independently develop similar or competing chip interfaces or design around any patents that may be issued to us; or
factors such as difficulty in obtaining cooperation from inventors, pre-existing challenges or litigation, or license or other contract issues will not present
additional challenges in securing protection with respect to patents and other intellectual property that we acquire.

If any of the above were to occur, our operating results could be adversely affected.

Furthermore, recent patent reform legislation, such as the Leahy-Smith America Invents Act, could increase the uncertainties and costs surrounding the

prosecution of any patent applications and the enforcement or defense of our licensed patents. The federal courts, the USPTO, the Federal Trade Commission, and
the U.S. International Trade Commission have also recently taken certain actions and issued rulings that have been viewed as unfavorable to patentees. While we
cannot predict what form any new patent reform laws or regulations may ultimately take, or what impact recent or future reforms may have on our business, any
laws or regulations that restrict or negatively impact our ability to enforce our patent rights against third parties could have a material adverse effect on our
business.

In addition, our patents will continue to expire according to their terms, with expected expiration dates ranging from 2019 to 2037. Our failure to continuously
develop or acquire successful innovations and obtain patents on those innovations could significantly harm our business, financial condition, results of operations,
or cash flows.

25

Table of Contents

Our inability to protect and own the intellectual property we create would cause our business to suffer.

We rely primarily on a combination of license, development and nondisclosure agreements, trademark, trade secret and copyright law and contractual

provisions to protect our non-patentable intellectual property rights. If we fail to protect these intellectual property rights, our customers and others may seek to use
our technology without the payment of license fees and royalties, which could weaken our competitive position, reduce our operating results and increase the
likelihood of costly litigation. The growth of our business depends in part on the use of our intellectual property in the products of third party manufacturers, and
our ability to enforce intellectual property rights against them to obtain appropriate compensation. In addition, effective trade secret protection may be unavailable
or limited in certain foreign countries. Although we intend to protect our rights vigorously, if we fail to do so, our business will suffer.

Effective protection of trademarks, copyrights, domain names, patent rights, and other intellectual property rights is expensive and difficult to maintain, both in

terms of application and maintenance costs, as well as the costs of defending and enforcing those rights. The efforts we have taken to protect our intellectual
property rights may not be sufficient or effective. Our intellectual property rights may be infringed, misappropriated, or challenged, which could result in them
being narrowed in scope or declared invalid or unenforceable. In addition, the laws or practices of certain countries do not protect our proprietary rights to the same
extent as do the laws of the United States. Significant impairments of our intellectual property rights, and limitations on our ability to assert our intellectual
property rights against others, could have a material and adverse effect on our business.

Third parties may claim that our products or services infringe on their intellectual property rights, exposing us to litigation that, regardless of merit, may be
costly to defend.

Our success and ability to compete are also dependent upon our ability to operate without infringing upon the patent, trademark and other intellectual property

rights of others. Third parties may claim that our current or future products or services infringe upon their intellectual property rights. Any such claim, with or
without merit, could be time consuming, divert management’s attention from our business operations and result in significant expenses. We cannot assure you that
we would be successful in defending against any such claims. In addition, parties making these claims may be able to obtain injunctive or other equitable relief
affecting our ability to license the products that incorporate the challenged intellectual property. As a result of such claims, we may be required to obtain licenses
from third parties, develop alternative technology or redesign our products. We cannot be sure that such licenses would be available on terms acceptable to us, if at
all. If a successful claim is made against us and we are unable to develop or license alternative technology, our business, financial condition, operating results and
cash flows could be materially adversely affected.

We rely upon the accuracy of our customers' recordkeeping, and any inaccuracies or payment disputes for amounts owed to us under our licensing agreements
may harm our results of operations.

Many of our license agreements require our customers to document the manufacture and sale of products that incorporate our technology and report this data to

us on a quarterly basis. While licenses with such terms give us the right to audit books and records of our customers to verify this information, audits rarely are
undertaken because they can be expensive, time consuming, and potentially detrimental to our ongoing business relationship with our customers. Therefore, we
typically rely on the accuracy of the reports from customers without independently verifying the information in them. Our failure to audit our customers' books and
records may result in our receiving more or less royalty revenue than we are entitled to under the terms of our license agreements. If we conduct royalty audits in
the future, such audits may trigger disagreements over contract terms with our customers and such disagreements could hamper customer relations, divert the
efforts and attention of our management from normal operations and impact our business operations and financial condition.

Any dispute regarding our intellectual property may require us to indemnify certain customers, the cost of which could severely hamper our business
operations and financial condition.

In any potential dispute involving our patents or other intellectual property, our customers could also become the target of litigation. While we generally do not
indemnify our customers, some of our agreements provide for indemnification, and some require us to provide technical support and information to a customer that
is involved in litigation involving use of our technology. In addition, we may be exposed to indemnification obligations, risks and liabilities that were unknown at
the time of acquisitions, including with respect to our acquisitions of SCS, the assets of the Snowbush IP group and the Memory Interconnect Business, and we
may agree to indemnify others in the future. Any of these indemnification and support obligations could result in substantial and material expenses. In addition to
the time and expense required for us to indemnify or supply such support to our customers, a customer's development, marketing and sales of licensed
semiconductors, lighting, mobile communications and data security technologies could be severely disrupted or shut down as a result of litigation, which in turn
could severely hamper our business operations and financial condition as a result of lower or no royalty payments.

26

Table of Contents

Item 1B.

Unresolved Staff Comments

None.

Item 2.

Properties

As of December 31, 2018, we occupied offices in the leased facilities described below:

Number of
Offices
Under Lease

7

  United States

Location

Primary Use

Sunnyvale, CA (Corporate Headquarters)

Executive and administrative offices, research and development, sales and marketing and
service functions

Chapel Hill, NC

  Research and development

Brecksville, OH (2 locations)

  Research and development, prototyping and light manufacturing facility

San Francisco, CA

Richardson, TX

  Agoura Hills, CA

  Bangalore, India

  Tokyo, Japan

  Seoul, Korea

  Shanghai, China

  Singapore

  Taipei, Taiwan

  Melbourne, Australia

  Research and development

  Research and development

  Research and development

  Administrative offices, research and development and service functions

  Business development

  Business development

  Business development

  Business development

  Business development

  Business development

  Rotterdam, The Netherlands

  Administrative offices, research and development, sales and marketing and service functions

  East Kilbride, United Kingdom

  Administrative offices, research and development, sales and marketing and service functions

  Toronto, Canada

  Espoo, Finland

  Research and development

  Research and development

1

1

1

1

1

1

1

1

1

1

1

Item 3.

Legal Proceedings

We are not currently a party to any material pending legal proceeding; however, from time to time, we may become involved in legal proceedings or be subject

to claims arising in the ordinary course of our business. Although the results of litigation and claims cannot be predicted with certainty, we currently believe that
the final outcome of these ordinary course matters will not have a material adverse effect on our business, operating results, financial position or cash flows.
Regardless of the outcome, litigation can have an adverse impact on us because of defense and settlement costs, diversion of management attention and resources
and other factors.

Item 4.

Mine Safety Disclosures

Not applicable.

PART II

27

 
 
   
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Item 5.

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

Our Common Stock is listed on The NASDAQ Global Select Market under the symbol “RMBS.” The following table sets forth for the periods indicated the

high and low sales price per share of our common stock as reported on The NASDAQ Global Select Market.

First Quarter

Second Quarter

Third Quarter

Fourth Quarter

Year Ended
December 31, 2018

Year Ended
December 31, 2017

High

Low

High

Low

$

$

$

$

14.63   $

11.85   $

14.24   $

14.30   $

12.54   $

13.41   $

13.61   $

10.76   $

13.64   $

10.99   $

7.17   $

15.50   $

12.37

11.39

11.30

13.32

28

 
 
 
 
 
 
 
 
Table of Contents

The graph below compares the cumulative 5-year total return of holders of Rambus Inc.'s common stock with the cumulative total returns of the NASDAQ
Composite index and the RDG Semiconductor Composite index. The graph tracks the performance of a $100 investment in our common stock and in each index
(with the reinvestment of all dividends) from December 31, 2013 to December 31, 2018.

Fiscal years ending:

Rambus Inc.

NASDAQ Composite

RDG Semiconductor Composite

12/13

12/14

12/15

12/16

12/17

12/18

100.00

100.00

100.00

117.11

114.62

128.26

122.39

122.81

118.01

145.41

133.19

157.41

150.16

172.11

216.98

80.99

165.84

197.02

The stock price performance included in this graph is not necessarily indicative of future stock price performance.

Information regarding our securities authorized for issuance under equity compensation plans will be included in Item 12, “Security Ownership of Certain

Beneficial Owners and Management and Related Stockholder Matters,” of this report on Form 10-K.

As of January 31, 2019, there were 463 holders of record of our common stock. Since many of the shares of our common stock are held by brokers and other

institutions on behalf of stockholders, we are unable to estimate the total number of beneficial stockholders represented by these record holders.

29

 
Table of Contents

We have never paid or declared any cash dividends on our common stock or other securities.

Share Repurchase Program

On January 21, 2015, our Board approved a share repurchase program authorizing the repurchase of up to an aggregate of 20.0 million shares. Share

repurchases under the plan may be made through the open market, established plans or privately negotiated transactions in accordance with all applicable securities
laws, rules, and regulations. There is no expiration date applicable to the plan. As part of the broader share repurchase program previously authorized by our Board
on January 21, 2015, we initiated an accelerated share repurchase program with Citibank, N.A. on March 5, 2018 which was completed in the second quarter of
2018. After giving effect to such accelerated share repurchase program, detailed in the table below, we had remaining authorization to repurchase approximately
3.6 million shares.

We record stock repurchases as a reduction to stockholders’ equity. We record a portion of the purchase price of the repurchased shares as an increase to

accumulated deficit when the price of the shares repurchased exceeds the average original proceeds per share received from the issuance of common stock.

Period

Total Number of
Shares Purchased  

Average Price Paid
per Share

Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs

Maximum
Number of Shares
that May Yet be
Purchased Under
the Plans or
Programs

Cumulative shares repurchased as of December 31, 2017

January 1, 2018 - March 31, 2018 (1)

April 1, 2018 - June 30, 2018 (1)

Cumulative shares repurchased as of December 31, 2018

12,565,372  

3,117,693  

667,653  

16,350,718    

$11.94

$13.21

$13.21

12,565,372  

3,117,693  

667,653  

16,350,718    

7,434,628

4,316,935

3,649,282

(1) In the first quarter of 2018, we entered into an accelerated share repurchase program with Citibank, N.A. to repurchase an aggregate of $50.0 million of our
common stock. We made an upfront payment of $50.0 million pursuant to the accelerated share repurchase program and received an initial delivery of 3.1
million shares which were retired and recorded as a $40.0 million reduction to stockholders' equity. The remaining $10.0 million of the initial payment was
recorded as a reduction to stockholders’ equity as an unsettled forward contract indexed to our stock. During the second quarter of 2018, the accelerated share
repurchase program was completed and we received an additional 0.7 million shares of our common stock, which were retired, as the final settlement of the
accelerated share repurchase program. The total shares of our common stock received and retired under the terms of the accelerated share repurchase program
were 3.8 million, with an average price paid per share of $13.21. See Note 13, “Stockholders' Equity,” of Notes to Consolidated Financial Statements of this
Form 10-K for further discussion.

Item 6.

Selected Financial Data

The following selected consolidated financial data as of and for the years ended December 31, 2018, 2017, 2016, 2015 and 2014 was derived from our

consolidated financial statements. The following selected consolidated financial data should be read in conjunction with Item 7, “Management’s Discussion and
Analysis of Financial Condition and Results of Operations,” and Item 8, “Financial Statements and Supplementary Data,” and other financial data included
elsewhere in this report. Our historical results of operations are not necessarily indicative of results of operations to be expected for any future period.

30

 
 
 
 
   
   
   
   
 
 
 
 
 
 
 
 
Total revenue

Net income (loss)

Net income (loss) per share:

Basic

Diluted

Consolidated Balance Sheet Data:

Cash, cash equivalents and marketable securities

Total assets

Convertible notes

Stockholders’ equity

______________________________________

Years Ended December 31,

2018 (3) (4) (5)

2017 (3) (4)

2016 (1) (2)

2015 (2) (3) (4)

2014 (2)

231,201   $

(157,957)   $

(In thousands, except per share amounts)
393,096   $

336,597   $

296,278   $

(22,862)   $

6,820   $

211,388   $

296,558

26,201

(1.46)   $

(1.46)   $

(0.21)   $

(0.21)   $

0.06   $

0.06   $

1.84   $

1.80   $

0.23

0.22

277,764   $

329,376   $

172,182   $

287,706   $

1,361,155   $

891,072   $

783,496   $

718,021   $

141,934   $

213,898   $

126,167   $

119,418   $

1,012,112   $

571,584   $

552,782   $

526,533   $

300,109

586,235

113,045

391,622

$

$

$

$

$

$

$

$

(1) The net income for the year ended December 31, 2016 included $18.3 million of impairment of in-process research and development intangible asset and a

reduction of operating expenses due to the change in our contingent consideration liability of $6.8 million.

(2) The net income (loss) for the years ended December 31, 2016, 2015 and 2014 included $0.6 million, $2.0 million and $2.0 million, respectively, of gain from

settlement which was reflected as a reduction of operating costs and expenses.

(3) The net loss for the year ended December 31, 2018 included a $113.7 million impact of an increase in our deferred tax asset valuation allowance. The net loss
for the year ended December 31, 2017 included a $21.5 million impact due to the recording of a deferred tax asset valuation allowance and $20.7 million
related to re-measurement of deferred tax assets as a result of the tax law changes. The net income for the year ended December 31, 2015 included $174.5
million related to the reversal of the deferred tax asset valuation allowance.

(4) Stockholders' equity includes $50.0 million paid under the accelerated share repurchase program initiated in both March 2018 and May 2017, and $100.0

million paid under the accelerated share repurchase program initiated in October 2015 as well as the $174.5 million net impact of the reversal of the deferred
tax asset valuation allowance.

(5) Reflects the impact from the adoption of ASC 606. See Note 3, “Recent Accounting Pronouncements,” of Notes to Consolidated Financial Statements of this

Form 10-K for further discussion.

Item 7.

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

This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange
Act of 1934 as described in more detail under “Note Regarding Forward-Looking Statements." Our forward-looking statements are based on current expectations,
forecasts and assumptions and are subject to risks, uncertainties and changes in condition, significance, value and effect. As a result of the factors described
herein, and in the documents incorporated herein by reference, including, in particular, those factors described under “Risk Factors,” we undertake no obligation
to publicly disclose any revisions to these forward-looking statements to reflect events or circumstances occurring subsequent to filing this report with the
Securities and Exchange Commission.

The following discussion and analysis should be read in conjunction with the consolidated financial statements and related notes that are included elsewhere in

this report.

Rambus and CryptoManager TM are trademarks or registered trademarks of Rambus Inc. Other trademarks that may be mentioned in this report on Form 10-K

are the property of their respective owners.

31

 
 
 
 
 
 
 
 
   
   
   
   
 
   
   
   
   
Table of Contents

Executive Summary

We create innovative hardware, software and services that drive technology advancements from the data center to the mobile edge. Our architecture licenses, IP

cores, chips, software and services span memory and interfaces, security and emerging technologies to positively impact the modern world. We collaborate with
the industry, partnering with leading chip and system designers, foundries and service providers. Integrated into a wide array of devices and systems, our products
power and secure diverse applications, including Big Data, Internet of Things (IoT) security, mobile payments and smart ticketing.

Highlights from our annual results were as follows:

•
•
•
•

Revenue of $231.2 million;
Operating Costs and Expenses of $318.2 million
GAAP diluted net loss per share of $1.46;
Net cash provided by operating activities of $87.1 million

In 2018, we had record product revenue for IP cores and server DIMM chips with wins at Tier 1 customers in the data center and communications segments

worldwide. Additionally, our CryptoManager platform was selected to securely provision the Authenta™ based secure memory at Micron.
Business Overview

Dedicated to making data faster and safer, Rambus creates innovative hardware, software and services that drive technology advancements from the data center
to the mobile edge. Our architecture licenses, IP cores, chips, software, and services span memory and interfaces, security, and emerging technologies to positively
impact the modern world. We collaborate with the industry, partnering with leading chip and system designers, foundries, and service providers. Integrated into a
wide array of devices and systems, our products power and secure diverse applications, including Big Data, Internet of Things (IoT) security, mobile payments,
and smart ticketing.

Building upon the foundation of technologies for memory, SerDes and other chip interfaces, we have expanded our portfolio of inventions and solutions to
address chip and system security, mobile payments and smart ticketing. We intend to continue our growth into new technology fields, consistent with our mission
to create value through our innovations and to make those technologies available through the shipment of products, the delivery of services, and licensing business
models. Key to our efforts is continuing to hire and retain world-class inventors, scientists and engineers to lead the development and deployment of inventions and
technology solutions for our fields of focus.

Our strategy is to continue to augment our patent license business model to provide additional technology, products and services while creating and leveraging

strategic synergies to increase revenue. In support of our strategy, Rambus has transitioned to focus on two key high-growth markets - the data center and the
mobile edge - with an approach and product roadmap that leverage our core competencies and supplement with ingredient components to both differentiate and
accelerate our position in complementary markets.

Organization

We have organized the business into three operational units: (1) Memory and Interfaces, or MID, which focuses on the design, development, manufacturing

through partnerships and licensing of technology and solutions that is related to memory and interfaces; (2) Rambus Security, or RSD, which focuses on the
design, development, deployment and licensing of technologies for chip, system and in-field application security, anti-counterfeiting, smart ticketing and mobile
payments; and (3) Emerging Solutions, or ESD, which includes the Rambus Labs team and the development efforts in the area of emerging technologies.

On January 30, 2018, we announced our plans to close our lighting division and manufacturing operations in Brecksville, Ohio. We believe that such business

was not core to our strategy and growth objectives. As of December 31, 2018, the lighting division has been wound down. Refer to Note 15, “Restructuring
Charges” of Notes to Consolidated Financial Statements of this Form 10-K for additional details.

As of December 31, 2018, MID and RSD met quantitative thresholds for disclosure as reportable segments. Results for the remaining operating segments were
shown under “Other.” For additional information concerning segment reporting, see Note 6, “Segments and Major Customers,” of Notes to Consolidated Financial
Statements of this Form 10-K.

32

Table of Contents

Revenue Sources

On January 1, 2018, we adopted ASU No. 2014-09, Revenue from Contracts with Customers in Accounting Standards Codification (ASC) Topic 606 (“ASC

606”, “the New Revenue Standard”) and all the related amendments using the modified retrospective method. We recognized the cumulative effect of initially
applying the New Revenue Standard of $626 million as an adjustment to the opening balance of accumulated deficit as of January 1, 2018. The prior period
comparative information has not been restated and continues to be reported under ASC Topic 605, “Revenue Recognition” (“ASC 605”) which was the accounting
standards in effect for those periods.

The most significant impacts of the New Revenue Standard relate to the following:

•

•

•

Revenue recognized for certain patent and technology licensing arrangements has changed under the New Revenue Standard. Revenue for (i) fixed-fee
arrangements (including arrangements that include minimum guaranteed amounts), (ii) variable royalty arrangements that we have concluded are fixed in
substance and (iii) the fixed portion of hybrid fixed/variable arrangements is recognized upon control over the underlying intellectual property (“IP”) use
right transferring to the licensee rather than upon billing under ASC 605, net of the effect of significant financing components calculated using customer-
specific, risk-adjusted lending rates and recognized over time on an effective rate basis. As a consequence of the acceleration of revenue recognition and
for matching purposes, all withholding taxes to be paid over the term of these licensing arrangements were expensed on the date the licensing revenue was
recognized.

Adoption of the New Revenue Standard resulted in revenue recognition being accelerated for variable royalties and the variable portion of hybrid
fixed/variable patent and technology licensing arrangements. Under the New Revenue Standard, royalty revenue is being recognized on the basis of
management’s estimates of sales or usage, as applicable, of the licensed IP in the period of reference, with a true-up being recorded in subsequent periods
based on actual sales or usage as reported by licensees (rather than upon receiving royalty reports from licensees as was the case under ASC 605).

Adoption of the New Revenue Standard also resulted in revenue recognition being accelerated for certain professional services arrangements, including
arrangements consisting of significant software customization or modification and development arrangements. Under the New Revenue Standard, such
arrangements are accounted for based on man-days incurred during the reporting period as compared to estimated total man-days necessary for contract
completion, as the customer either controls the asset as it is created or enhanced by us or, where the asset has no alternative use to us, we are entitled to
payment for performance to date and expect to fulfill the contract. Revenue recognition is no longer capped to the lesser of inputs in the period or
accepted billable project milestones as was the case under ASC 605.

As part of the adoption of the New Revenue Standard, we elected to apply the following practical expedients:

• We applied the practical expedient whereby we primarily charge commission costs to expense when incurred because the amortization period would be

one year or less for the asset that would have been recognized from deferring these costs.

• We applied the practical expedient which allowed us to reflect the aggregate effect of all contract modifications occurring before the beginning of the

earliest period presented when allocating the transaction price to performance obligations.

• We applied the practical expedient to not assess a contract asset or contract liability for a significant financing component if the period between the

customer's payment and our transfer of goods or services is one year or less.

Our inventions and technology solutions are offered to our customers through patent, technology, software and IP core licenses, as well as product sales and
services. Today, our primary source of revenue is derived from patent licenses, through which we provide our customers a license to use a certain portion of our
broad portfolio of patented inventions. The license provides our customers with a defined right to use our innovations in the customer’s own digital electronics
products, systems or services, as applicable. The licenses may also define the specific field of use where our customers may use or employ our inventions in their
products. License agreements are structured with fixed, variable or a hybrid of fixed and variable royalty payments over certain defined periods ranging for periods
of up to ten years. Leading consumer product, industrial, semiconductor and system companies such as AMD, Broadcom, Cisco, Freescale, Fujitsu, IBM, Intel,
Micron, Nanya, NVIDIA, Panasonic, Qualcomm, Renesas, Samsung, SK hynix, STMicroelectronics, Toshiba and Xilinx have licensed our

33

Table of Contents

patents. The vast majority of our patents were secured through our internal research and development efforts across all of our business units.

We also offer our customers technology licenses to support the implementation and adoption of our technology in their products or services. Our customers
include leading companies such as IBM, Panasonic, Qualcomm, Samsung, Sony and Toshiba. Our technology license offerings include a range of technologies for
incorporation into our customers’ products and systems. We also offer a range of services as part of our technology licenses which can include know-how and
technology transfer, product design and development, system integration, and other services. These technology license agreements may have both a fixed price
(non-recurring) component and ongoing use fees and in some cases, royalties. Further, under technology licenses, our customers typically receive licenses to our
patents necessary to implement these solutions in their products with specific rights and restrictions to the applicable patents elaborated in their individual contracts
with us.

Revenues from royalties accounted for 56%, 74% and 79% of our consolidated revenue for the years ended December 31, 2018, 2017 and 2016, respectively.

The remainder of our revenue is product revenue, contract services and other revenue, which includes our product sales, IP core licenses, software licenses and

related implementation, support and maintenance fees, and engineering services fees. The timing and amounts invoiced to customers can vary significantly
depending on specific contract terms and can therefore have a significant impact on deferred revenue or account receivables in any given period. Product revenue
accounted for 17%, 9% and 8% of our consolidated revenue for the years ended December 31, 2018, 2017 and 2016, respectively. Contract and other revenue
accounted for 27%, 17% and 14% of our consolidated revenue for the years ended December 31, 2018, 2017 and 2016, respectively. As we continue to execute on
our strategy to augment our traditional patent licensing business model to provide additional technology, products and services, product revenue and related cost of
product revenue were reclassified from contract and other revenue and cost of contract and other revenue, respectively, during the second quarter of 2017.

Expenses

Cost of product revenue for 2018 decreased approximately $5.5 million to $18.3 million from $23.8 million as compared to 2017 primarily due to decreased
cost of sales associated with the closure of the lighting division announced in the first quarter of 2018, offset by increased cost of sales associated with higher sales
of memory products.

Engineering expenses continue to play a key role in our efforts to maintain product innovations. Our engineering expenses for 2018 decreased $10.8 million as
compared to 2017 primarily due to decreased amortization costs of $11.4 million, prototyping costs of $1.8 million and depreciation expense of $1.4 million, offset
by increased consulting expenses of $1.2 million, allocated information technology costs of $1.1 million, engineering development tool costs of $1.0 million and
stock-based compensation expense of $0.4 million.

Sales, general and administrative expenses for 2018 decreased $7.0 million as compared to 2017 primarily due to decreased stock-based compensation expense

of $6.0 million primarily due to the termination of our former chief executive officer at the end of June 2018, sales and marketing costs of $1.2 million and
consulting costs of $1.1 million, offset by increased facilities costs of $1.0 million and recruiting costs of $0.6 million.

Intellectual Property

As of December 31, 2018, our semiconductor, lighting, security and other technologies are covered by 2,094 U.S. and foreign patents. Additionally, we have

557 patent applications pending. Some of the patents and pending patent applications are derived from a common parent patent application or are foreign
counterpart patent applications. We have a program to file applications for and obtain patents in the United States and in selected foreign countries where we
believe filing for such protection is appropriate and would further our overall business strategy and objectives. In some instances, obtaining appropriate levels of
protection may involve prosecuting continuation and counterpart patent applications based on a common parent application. We believe our patented innovations
provide our customers with the ability to achieve improved performance, lower risk, greater cost-effectiveness and other benefits in their products and services.

Trends

There are a number of trends that may have a material impact on us in the future, including but not limited to, the evolution of memory and SerDes technology,

adoption of mobile payment, smart ticketing and security solutions, the use and adoption of our inventions or technologies generally, industry consolidation, and
global economic conditions with the resulting impact on sales of consumer electronic systems. In addition, as discussed under “Results of Operations” below, our
adoption of the New

34

Table of Contents

Revenue Standard will have a significant impact on our revenue trends as compared to prior periods in which we reported revenue under ASC 605.

We have a high degree of revenue concentration. Our top five customers for each reporting period represented approximately 49% of our revenue for 2018 as
compared to 55% in 2017 and 63% in 2016. The particular customers which account for revenue concentration have varied from period-to-period as a result of the
addition of new contracts, expiration of existing contracts, renewals of existing contracts, industry consolidation and the volumes and prices at which the customers
have recently sold to their customers. These variations are expected to continue in the foreseeable future.

Our revenue from companies headquartered outside of the United States accounted for approximately 44% in 2018 as compared to 58% in 2017 and 64% in
2016. We expect that revenue derived from international customers will continue to represent a significant portion of our total revenue in the future. To date, the
majority of the revenue from international customers has been denominated in U.S. dollars. However, to the extent that such customers’ sales to their customers are
not denominated in U.S. dollars, any revenue that we receive as a result of such sales could be subject to fluctuations in currency exchange rates. In addition, if the
effective price of licensed products sold by our foreign customers were to increase as a result of fluctuations in the exchange rate of the relevant currencies,
demand for licensed products could fall, which in turn would reduce our revenue. We do not use financial instruments to hedge foreign exchange rate risk. For
additional information concerning international revenue, see Note 6, “Segments and Major Customers,” of Notes to Consolidated Financial Statements of this
Form 10-K.

Our licensing cycle for new licensees as well as renewals for existing licensees is lengthy, costly and unpredictable without any degree of certainty. We may
incur costs in any particular period before any associated revenue stream begins, if at all. Our lengthy license negotiation cycles could make our future revenue
difficult to predict because we may not be successful in entering into licenses with our customers in the amounts projected, or on our anticipated timelines.

The semiconductor industry is intensely competitive and highly cyclical, limiting our visibility with respect to future sales. To the extent that macroeconomic

fluctuations negatively affect our principal customers, the demand for our products and technology may be significantly and adversely impacted and we may
experience substantial period-to-period fluctuations in our operating results.

The royalties we receive from our semiconductor customers are partly a function of the adoption of our technologies by system companies. Many system
companies purchase semiconductors containing our technologies from our customers and do not have a direct contractual relationship with us. Our customers
generally do not provide us with details as to the identity or volume of licensed semiconductors purchased by particular system companies. As a result, we face
difficulty in analyzing the extent to which our future revenue will be dependent upon particular system companies.

Global demand for effective security technologies continues to increase. In particular, highly integrated devices such as smart phones are increasingly used for
applications requiring security such as mobile payments, corporate information and user data. Our RSD operating segment is primarily focused on positioning its
DPA countermeasures, security cores, CryptoManager™ technology solutions, and the introduction of in-field applications mobile payments and smart ticketing
solutions to our offerings to capitalize on these trends and growing adoption among technology partners and customers.

Cost of product revenue, engineering costs as well as sales, general and administrative expenses in the aggregate decreased and as a percentage of revenue
increased in 2018 as compared to the prior year. In the near term, we expect these costs in the aggregate to be higher as we intend to continue to make investments
in the infrastructure and technologies required to increase our product innovation in semiconductor, security, mobile payments, smart cards and other technologies.
In addition, while we have not been involved in material litigation since 2014, to the extent litigation is again necessary, our expectations on the amount and timing
of any future general and administrative costs are uncertain.

As a part of our overall business strategy, from time to time, we evaluate businesses and technologies for potential acquisition that are aligned with our core
business and designed to supplement our growth, including the acquisitions of SCS, the assets of the Snowbush IP group and the Memory Interconnect Business
during 2016. Similarly, we evaluate our current businesses and technologies that are not aligned with our core business for potential divestiture.

35

Table of Contents

Results of Operations

On January 1, 2018, we adopted ASC 606. Consistent with the modified retrospective adoption method, our results of operations for periods prior to our
adoption of ASC 606 remain unchanged as revenue for the years ended December 31, 2017 and 2016 was recognized under ASC 605. Therefore, the periods are
not directly comparable.

The adoption of ASC 606 limits the comparability of revenue and certain expenses presented in the results of operations for the year ended December 31, 2018,

when compared to the same periods in 2017 and 2016. For additional information on the impact of the new accounting standard on our revenue, see Note 3,
"Recent Accounting Pronouncements," of Notes to Consolidated Financial Statements of this Form 10-K.

The following table sets forth, for the periods indicated, the percentage of total revenue represented by certain items reflected in our consolidated statements of

operations:

Revenue:

Royalties

Product revenue

Contract and other revenue

Total revenue

Operating costs and expenses:

Cost of product revenue*

Cost of contract and other revenue

Research and development*

Sales, general and administrative*

Restructuring charges

Impairment of in-process research and development intangible asset

Change in contingent consideration liability

Gain from sale of intellectual property

Gain from settlement

Total operating costs and expenses

Operating income (loss)

Interest income and other income (expense), net

Loss on extinguishment of debt

Interest expense

Interest and other income (expense), net

Income (loss) before income taxes

Provision for income taxes

Net income (loss)

______________________________________

* Includes stock-based compensation:

Cost of product revenue

Research and development

Sales, general and administrative

Years Ended December 31,

2018

2017

2016

56.4 %  

16.7 %  

26.9 %  

100.0 %  

7.9 %  

15.3 %  

68.5 %  

44.9 %  

1.0 %  

— %  

— %  

— %  

— %  

137.6 %  

(37.6)%  

14.1 %  

— %  

(7.0)%  

7.1 %  

(30.5)%  

37.8 %  

(68.3)%  

73.7 %  

9.3 %  

17.0 %  

100.0 %  

6.1 %  

14.1 %  

37.9 %  

28.2 %  

— %  

— %  

— %  

(0.1)%  

— %  

86.2 %  

13.8 %  

0.4 %  

(0.3)%  

(3.5)%  

(3.4)%  

10.4 %  

16.2 %  

(5.8)%  

78.6 %

7.7 %

13.7 %

100.0 %

6.3 %

13.6 %

38.6 %

28.3 %

— %

5.4 %

(2.0)%

— %

(0.2)%

90.0 %

10.0 %

0.5 %

— %

(3.8)%

(3.3)%

6.7 %

4.7 %

2.0 %

0.0%  

5.4%  

4.0%  

0.0%  

3.1%  

3.9%  

0.0%

2.7%

3.5%

36

 
 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

Segment Results

Revenue from the MID reportable segment decreased approximately $112.2 million to $168.5 million for the year ended December 31, 2018 from $280.7
million for the year ended December 31, 2017. The decrease was primarily due to the adoption of ASC 606 in 2018 as discussed above, partially offset by higher
volume of memory product sales.

Segment operating income from the MID reportable segment decreased approximately $121.2 million to $73.5 million for the year ended December 31, 2018
from $194.7 million for the year ended December 31, 2017. The decrease was primarily due to the decrease in revenue as discussed above, an increase in cost of
sales related to higher sales of memory products, increased headcount related costs due to higher number of employees in 2018 and higher consulting costs,
partially offset by lower prototyping costs.

Revenue from the RSD reportable segment decreased approximately $36.5 million to $60.2 million for the year ended December 31, 2018 from $96.7 million

for the year ended December 31, 2017. The decrease was primarily due to the adoption of ASC 606 in 2018 as discussed above.

Segment operating income from the RSD reportable segment decreased approximately $39.6 million to $7.1 million for the year ended December 31, 2018
from $46.7 million for the year ended December 31, 2017. The decrease was primarily due to the decrease in revenue as discussed above, an increased headcount
related costs due to higher number of employees in 2018, partially offset by lower cost of sales.

Revenue from the Other segment decreased approximately $13.3 million to $2.4 million for the year ended December 31, 2018 from $15.7 million for the year

ended December 31, 2017. The decrease was due to the closing of our lighting division in the first quarter of 2018.

Segment operating loss from the Other segment decreased approximately $6.0 million to $12.1 million for the year ended December 31, 2018 from $18.1

million for the year ended December 31, 2017. The decrease was due to the closing of our lighting division in the first quarter of 2018.

Revenue from the MID reportable segment increased approximately $40.9 million to $280.7 million for the year ended December 31, 2017 from $239.8 million

for the year ended December 31, 2016. The increase was primarily due to higher royalty revenue from Marvell Technology Group, a renewed license agreement
with STMicroelectronics, Western Digital, Winbond Electronics, higher sales from technology projects and higher sales of memory products from the Memory
Interconnect Business acquisition.

Segment operating income from the MID reportable segment increased approximately $23.3 million to $194.7 million for the year ended December 31, 2017
from $171.4 million for the year ended December 31, 2016. The increase was primarily due to increased revenue as discussed above, partially offset by increased
headcount related costs due to higher number of employees and increased cost of sales related to sales of memory products.

Revenue from the RSD reportable segment increased approximately $20.5 million to $96.7 million for the year ended December 31, 2017 from $76.2 million
for the year ended December 31, 2016. The increase was primarily due to higher royalty revenue from NVIDIA, Western Digital and higher revenue from Renesas
and other security technology development projects, offset by lower royalty revenue from Xilinx.

Segment operating income from the RSD reportable segment increased approximately $22.4 million to $46.7 million for the year ended December 31, 2017

from $24.3 million for the year ended December 31, 2016. The increase was primarily due to increased revenue as discussed above and decreased headcount
related costs, partially offset by increased consulting costs.

Revenue from the Other segment decreased approximately $4.9 million to $15.7 million for the year ended December 31, 2017 from $20.6 million for the year

ended December 31, 2016. The decrease was primarily due to lower royalties from technology licenses associated with lighting products and decreased revenue
from lighting technology development projects, offset by increased sales of light guide products.

Segment operating loss from the Other segment increased approximately $8.3 million to $18.1 million for the year ended December 31, 2017 from $9.8 million

for the year ended December 31, 2016. The increase was primarily due to decreased revenue as discussed above.

37

Table of Contents

Total Revenue

Royalties

Product revenue

Contract and other revenue

Total revenue

Royalty Revenue

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

(Dollars in millions)

$

$

130.5   $

289.6   $

264.6  

38.7  

62.0  

36.5  

67.0  

26.1  

45.9  

231.2   $

393.1   $

336.6  

(55.0)%  

6.0 %  

(7.4)%  

(41.2)%  

9.4%

40.1%

45.9%

16.8%

Our royalty revenue, which includes patent and technology license royalties, decreased approximately $159.1 million to $130.5 million for the year ended
December 31, 2018 from $289.6 million for 2017. The decrease was due primarily to the change in revenue recognition whereby we no longer recognize revenue
at the time billings become due and collectable. Upon adoption of ASC 606 in the first quarter of 2018, we now recognize revenue at the inception of certain fixed-
fee licensing arrangements when our performance obligations are met. Under the previous revenue recognition standard (ASC 605), our revenue for the year ended
would have been higher as discussed under Note 3, "Recent Accounting Pronouncements," of Notes to Consolidated Financial Statements of this Form 10-K.

With changes in revenue recognition due to the adoption of ASC 606 in 2018, our royalty revenue for 2018 was significantly lower than that for 2017 primarily

due to the change from the adoption of ASC 606 as noted above. This accounting change will not impact billings or the cash flow from these arrangements.
Furthermore, we may experience greater variability in quarterly and annual revenue in future periods as a result of the revenue accounting treatment applied to
future fixed-fee licensing arrangements.

Our royalty revenue increased approximately $25.0 million to $289.6 million for the year ended December 31, 2017 from $264.6 million for 2016. The increase

was due to higher royalty revenue from GLOBALFOUNDRIES, NVIDIA, Marvell Technology Group, a renewed license agreement with STMicroelectronics,
Western Digital, Winbond Electronics, and various other customers, offset by lower royalty revenue from AMD, Broadcom, Eaton, Fujitsu, MediaTek, SK hynix,
Xilinx, and various other customers.

We are continuously in negotiations for licenses with prospective customers. We expect patent royalties will continue to vary from period to period based on
our success in adding new customers, renewing or extending existing agreements, as well as the level of variation in our customers' reported shipment volumes,
sales price and mix, offset in part by the proportion of customer payments that are fixed or hybrid in nature. We also expect that our technology royalties will
continue to vary from period to period based on our customers’ shipment volumes, sales prices, and product mix.

Royalty Revenue by Reportable Segment

Royalty revenue from the MID reportable segment decreased approximately $123.7 million to $105.4 million for the year ended December 31, 2018 from

$229.1 million for 2017. The decrease was due to the adoption of ASC 606 in 2018 as discussed above.

Royalty revenue from the RSD reportable segment decreased approximately $33.8 million to $24.7 million for the year ended December 31, 2018 from $58.5

million for 2017. The decrease was due to the adoption of ASC 606 in 2018 as discussed above.

Royalty revenue from the Other segment decreased $1.6 million to $0.4 million for the year ended December 31, 2018 from $2.0 million for 2017. The

decrease was due to the closing of our lighting division in the first quarter of 2018.

Royalty revenue from the MID reportable segment increased approximately $16.4 million to $229.1 million for the year ended December 31, 2017 from $212.7
million for 2016. The increase was due to higher royalty revenue from Marvell Technology Group, a renewed license agreement with STMicroelectronics, Western
Digital, Winbond Electronics, and various other customers, offset by lower royalty revenue from AMD, Broadcom, MediaTek, SK hynix and Xilinx.

Royalty revenue from the RSD reportable segment increased approximately $11.6 million to $58.5 million for the year ended December 31, 2017 from $46.9
million for 2016. The increase was primarily due to higher royalty revenue from NVIDIA, Western Digital and various other customers, offset by lower royalty
revenue from Xilinx.

38

 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
   
Table of Contents

Royalty revenue from the Other segment decreased $3.1 million to $2.0 million for the year ended December 31, 2017 from $5.1 million for 2016. The

decrease was due to lower royalties from technology licenses associated with lighting products.

Product Revenue

Product revenue consists of revenue from the sale of memory, security and lighting products. Product revenue increased approximately $2.2 million to
$38.7 million for the year ended December 31, 2018 from $36.5 million for 2017. The increase was primarily due to higher sales of memory products, partially
offset by lower sales of lighting products, as a result of closing our lighting division in the first quarter of 2018.

Product revenue increased approximately $10.4 million to $36.5 million for the year ended December 31, 2017 from $26.1 million for 2016. The increase was

primarily due to sales of security products to Qualcomm and memory products from the Memory Interconnect Business.

We believe that product revenue will increase in 2019, mainly from the sale of our memory products. Our ability to continue to grow product revenue is

dependent on, among other things, our ability to continue to obtain orders from customers and our ability to meet our customers' demands.

Product Revenue by Reportable Segments

Product revenue from the MID reportable segment increased approximately $16.1 million to $36.4 million for the year ended December 31, 2018 from $20.3

million for 2017, due to higher volume of memory product sales.

Product revenue from the RSD reportable segment decreased approximately $4.2 million to $1.4 million for the year ended December 31, 2018 from $5.6

million for 2017, primarily due to lower sales of security products.

Product revenue from the Other segment decreased approximately $9.7 million to $0.9 million for the year ended December 31, 2018 from $10.6 million for

2017. The decrease was due to lower sales of lighting products as a result of closing our lighting division in the first quarter of 2018.

Product revenue from the MID reportable segment increased approximately $7.4 million to $20.3 million for the year ended December 31, 2017 from $12.9

million for 2016, due to higher sales of memory products from the Memory Interconnect Business acquisition.

Product revenue from the RSD reportable segment increased approximately $1.9 million to $5.6 million for the year ended December 31, 2017 from $3.7

million for 2016, primarily due to higher revenue from Qualcomm, offset by lower sales to various other customers.

Product revenue from the Other segment increased approximately $1.1 million to $10.6 million for the year ended December 31, 2017 from $9.5 million for

2016, due to higher sales of light guide products.

Contract and Other Revenue

Contract and other revenue consists of revenue from technology development projects. Contract and other revenue decreased approximately $5.0 million to
$62.0 million for the year ended December 31, 2018 from $67.0 million for 2017. The decrease was primarily due to lower revenue from various memory and
lighting technology development projects, partially offset by higher revenue from various security technology development projects.

Contract and other revenue increased approximately $21.1 million to $67.0 million for the year ended December 31, 2017 from $45.9 million for 2016. The
increase was primarily due to increased memory and security technology development projects, including revenue from the acquisitions during 2016, offset by
decreased revenue from lighting technology development projects.

We believe that contract and other revenue will fluctuate over time based on our ongoing technology development contractual requirements, the amount of
work performed, the timing of completing engineering deliverables, and the changes to work required, as well as new technology development contracts booked in
the future.

Contract and Other Revenue by Reportable Segments

Contract and other revenue from the MID reportable segment decreased $4.5 million to $26.8 million for the year ended December 31, 2018 from $31.3 million

for 2017, due to lower revenue from various memory technology projects.

39

Contract and other revenue from the RSD reportable segment increased approximately $1.6 million to $34.1 million for the year ended December 31, 2018

from $32.5 million for 2017, due to higher revenue from various security technology development projects.

Contract and other revenue from the Other segment decreased approximately $2.1 million to $1.1 million for the year ended December 31, 2018 from $3.2
million for 2017, due to lower revenue from our lighting technology development projects as a result of closing our lighting division in the first quarter of 2018.

Contract and other revenue from the MID reportable segment increased $17.0 million to $31.3 million for the year ended December 31, 2017 from $14.3
million for 2016, primarily due to higher revenue from GLOBALFOUNDRIES, Samsung and other memory technology projects, including revenue from the
acquisitions in 2016.

Contract and other revenue from the RSD reportable segment increased approximately $6.9 million to $32.5 million for the year ended December 31, 2017

from $25.6 million for 2016, primarily due to higher revenue from Renesas and other security technology development projects, including revenue from the
acquisitions in 2016.

Contract and other revenue from the Other segment decreased approximately $2.8 million to $3.2 million for the year ended December 31, 2017 from $6.0

million for 2016, primarily due to decreased revenue from lighting technology development projects.

Cost of product revenue:

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

(Dollars in millions)

Cost of product revenue

$

18.3   $

23.8   $

21.3  

(23.1)%  

11.5%

Cost of product revenue are costs attributable to the sale of memory, security and lighting products.

For the year ended December 31, 2018 as compared to 2017, cost of product revenue decreased 23.1% primarily due to decreased cost of sales associated with

the closure of the lighting division announced in the first quarter of 2018, offset by increased cost of sales associated with higher sales of memory products.

For the year ended December 31, 2017 as compared to 2016, cost of product revenue increased 11.5% primarily due to increased cost of sales associated with

higher sales of memory products related to the Memory Interconnect Business acquisition in the second half of 2016.

In the near term, we expect costs of product revenue to be higher as we expect higher sales of our various products in 2019 as compared to 2018.

Engineering costs:

Engineering costs

Cost of contract and other revenue

Amortization of intangible assets

Total cost of contract and other revenue

Research and development

Stock-based compensation

Total research and development

Total engineering costs

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

(Dollars in millions)

$

11.7   $

20.3   $

23.7  

35.4  

145.7  

12.6  

158.3  

35.1  

55.4  

136.9  

12.2  

149.1  

$

193.7   $

204.5   $

16.1  

29.7  

45.8  

120.6  

9.2  

129.8  

175.6  

(42.1)%  

(32.4)%  

(36.1)%  

6.4 %  

3.3 %  

6.2 %  

(5.3)%  

26.1%

18.2%

21.0%

13.5%

33.0%

14.9%

16.5%

Engineering costs are allocated between cost of contract and other revenue and research and development expenses. Cost of contract and other revenue reflects
the portion of the total engineering costs which are specifically devoted to individual customer development and support services as well as amortization expense
related to various acquired intellectual property for patent licensing. The balance of engineering costs, incurred for the development of applicable technologies, is
charged to

40

 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
   
Table of Contents

research and development. In a given period, the allocation of engineering costs between these two components is a function of the timing of the development and
implementation schedules of individual customer contracts.

For the year ended December 31, 2018 as compared to 2017, total engineering costs decreased 5.3% primarily due to decreased amortization costs of $11.4

million, prototyping costs of $1.8 million and depreciation expense of $1.4 million, offset by increased consulting expenses of $1.2 million, engineering
development tool costs of $1.0 million, allocated information technology costs of $1.1 million and stock-based compensation expense of $0.4 million.

For the year ended December 31, 2017 as compared to 2016, total engineering costs increased 16.5% primarily due to increased headcount related expenses of

$8.1 million, increased expenses related to software design tools of $5.5 million, increased amortization costs of $5.4 million, increased costs associated with
engineering services of $4.2 million, increased stock-based compensation expense of $3.0 million, increased prototyping costs of $2.4 million, increased travel
costs of $0.9 million, increased bonus accrual expense of $0.8 million and increased consulting costs of $0.6 million, offset by lower depreciation expense of $1.6
million. Most of the increases were primarily due to business acquisitions during 2016.

In the near term, we expect engineering costs to be higher as we continue to make investments in the infrastructure and technologies required to maintain our

product innovation in semiconductor, security and other technologies.

Sales, general and administrative costs:

Sales, general and administrative costs

Sales, general and administrative costs

Stock-based compensation

Total sales, general and administrative costs

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

(Dollars in millions)

$

$

94.8   $

9.1  

95.8   $

15.1  

103.9   $

110.9   $

83.3  

11.8  

95.1  

(1.1)%  

(39.6)%  

(6.3)%  

14.9%

28.4%

16.6%

Sales, general and administrative expenses include expenses and costs associated with trade shows, public relations, advertising, litigation, general legal,

insurance and other sales, marketing and administrative efforts. Litigation expenses have historically been a significant portion of our sales, general and
administrative expenses. Consistent with our business model, our licensing, sales and marketing activities aim to develop or strengthen relationships with potential
new and current customers. In addition, we work with current customers through marketing, sales and technical efforts to drive adoption of their products that use
our innovations and solutions, by system companies. Due to the long business development cycles we face and the semi-fixed nature of sales, general and
administrative expenses in a given period, these expenses generally do not correlate to the level of revenue in that period or in recent or future periods.

For the year ended December 31, 2018 as compared to 2017, total sales, general and administrative costs decreased 6.3% primarily due to decreased stock-
based compensation expense of $6.0 million primarily due to the termination of our former chief executive officer at the end of June 2018, consulting costs of $1.1
million and sales and marketing costs of $1.2 million, offset by increased facilities costs of $1.0 million and recruiting costs of $0.6 million.

For the year ended December 31, 2017 as compared to 2016, total sales, general and administrative costs increased 16.6% primarily due to increased headcount
related expenses of $5.4 million, increased stock-based compensation expense of $3.3 million, increased bonus accrual expense of $3.1 million, increased sales and
marketing expenses of $2.6 million, increased consulting costs of $2.2 million and increased travel costs of $1.3 million, offset by decreased acquisition related
costs of $3.1 million. Most of the increases were primarily due to business acquisitions during 2016.

In the future, sales, general and administrative costs will vary from period to period based on the trade shows, advertising, legal, acquisition and other sales,

marketing and administrative activities undertaken, and the change in sales, marketing and administrative headcount in any given period. In the near term, we
expect our sales, general and administrative costs to remain relatively flat.

41

 
 
 
 
 
 
 
 
 
   
   
 
   
   
   
   
Table of Contents

Restructuring charges:

Restructuring charges

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

$

(Dollars in millions)
—   $

2.2   $

—  

100.0%  

0.0%

During the first quarter of 2018, we announced our plans to close our lighting division and manufacturing operations in Brecksville, Ohio. We believed that
such business was not core to our strategy and growth objectives. As a result, we recorded a charge of $2.2 million related to employee terminations and severance
costs, and facility related costs.

During 2017 and 2016, we did not initiate any restructuring programs.

Refer to Note 15, “Restructuring Charges,” of Notes to Consolidated Financial Statements of this Form 10-K for further discussion.

Impairment of in-process research and development intangible asset:

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

(Dollars in millions)

Impairment of in-process research and development intangible
asset

$

—   $

—   $

18.3  

—%  

(100.0)%

During 2018 and 2017, we did not record a charge for the impairment of any intangible assets or goodwill.

During the fourth quarter of 2016, we recorded a charge of $18.3 million related to the impairment of the in-process research and development intangible asset
acquired in the acquisition of Snowbush IP. The impairment of this intangible asset resulted from a delay in the market served by this initiative. This delay will not
impact the short-term revenue expectations but may impact our revenue expectations several years into the future. This impairment was partially offset by a $6.8
million reduction of acquisition purchased consideration related to this product line.

Change in contingent consideration liability:

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

(Dollars in millions)

Change in contingent consideration liability

$

—   $

—   $

(6.8)  

—%  

(100.0)%

During the fourth quarter of 2016, we recorded a reduction in our contingent consideration liability of $6.8 million resulting in a gain in our Consolidated
Statements of Operations of this Form 10-K. See the “Impairment of in-process research and development intangible asset” section discussed above for further
details.

Interest and other income (expense), net:

Interest income and other income (expense), net

Loss on extinguishment of debt

Interest expense

Interest and other income (expense), net

______________________________________

*    NM — percentage is not meaningful

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

$

$

(Dollars in millions)

32.6   $

1.4   $

—  

(16.3)  

(1.1)  

(13.7)  

16.3   $

(13.4)   $

1.7  

—  

(12.7)  

(11.0)  

NM*

(100.0)%  

18.7 %  

NM*

(20.5)%

100.0 %

7.7 %

21.9 %

Interest income and other income (expense), net, consists primarily of interest income related to the interest income of $27.2 million for the year ended

December 31, 2018 due to the significant financing component of licensing agreements as a result of the adoption of the New Revenue Standard as of January 1,
2018 as well as interest income generated from investments in high quality fixed income securities and any gains or losses from the re-measurement of our
monetary assets or liabilities denominated in foreign currencies.

42

 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
   
   
 
 
Loss on extinguishment of debt relates to the extinguishment of a portion of the 2018 Notes during 2017. See Note 10, “Convertible Notes,” of Notes to

Consolidated Financial Statements of this Form 10-K for additional details.

Interest expense consists of interest expense associated with our imputed facility lease obligations on the Sunnyvale and Ohio facilities and non-cash interest
expense related to the amortization of the debt discount and issuance costs on the 1.375% convertible senior notes due 2023 (the “2023 Notes”) and the 1.125%
convertible senior notes due 2018 (the “2018 Notes”), as well as the coupon interest related to these notes. Interest expense increased in 2018 as compared to the
same period in 2017 primarily due to the full year of interest expense related to the 2023 Notes offset by the maturing of the 2018 Notes in the third quarter of
2018. Interest expense increased in 2017 as compared to the same period in 2016 primarily due to the issuance of the 2023 Notes in the fourth quarter of 2017. For
the years ended December 31, 2018, 2017 and 2016, we recognized $4.3 million , $4.4 million and $4.4 million, respectively, of interest expense in connection
with the imputed financing obligations in our statements of operations. We expect our non-cash interest expense to increase steadily as the notes reach maturity.
See Note 10, “Convertible Notes,” of Notes to Consolidated Financial Statements of this Form 10-K for additional details.

Provision for income taxes:

Years Ended December 31,

2017 to 2018

2016 to 2017

2018

2017

2016

Change

Change

Provision for income taxes

Effective tax rate

______________________________________

* NM — percentage is not meaningful

$

87.3

(Dollars in millions)
  $

63.9

  $

15.8

36.8%  

NM*

(123.6)%  

155.8%  

69.9%    

Our effective tax rate for the year ended December 31, 2018 was different from the U.S. statutory tax rate primarily due to the establishment of a full valuation
allowance on U.S. federal deferred tax assets. Our effective tax rate for the year ended December 31, 2017 was different from the U.S. statutory rate primarily due
to the deferred tax asset valuation allowance on expiring 2010 foreign tax credits and certain federal research and development credits, and the re-measurement of
deferred taxes from a 35% to 21% tax rate due to U.S. tax reform. Our effective tax rate for the year ended December 31, 2016 was different from the U.S.
statutory rate primarily due to income tax expense recognized from exercises and expiration of out-of-the-money fully vested shares from our equity incentive
plans.

We recorded a provision for incomes taxes of $87.3 million for the year ended December 31, 2018, which primarily resulted from establishing a full valuation
allowance on our U.S. federal deferred tax assets. For the year ended December 31, 2018, we paid withholding taxes of $20.4 million. We recorded a provision for
incomes taxes of $63.9 million for the year ended December 31, 2017, which was primarily comprised of our valuation allowance on unused 2010 foreign tax
credits and certain federal research and development credits, and our deferred taxes re-measurements following U.S. tax reform. For the year ended December 31,
2017, we paid withholding taxes of $20.5 million. We recorded a provision for income taxes of $15.8 million for the year ended December 31, 2016, which was
primarily compromised of withholding taxes, other foreign taxes and current state taxes. For the year ended December 31, 2016, we paid withholding taxes of
$22.0 million.

On December 22, 2017, the Tax Cuts and Jobs Act ("the Tax Act") was enacted into law in the United States. The Tax Act, among other things, lowered U.S.
corporate income tax rates from 35% to 21%, implemented a territorial tax system, and imposed a one-time transition tax on deemed repatriated earnings of non-
U.S. subsidiaries.

The U.S. tax law changes, including limitations on various business deductions such as executive compensation under Internal Revenue Code §162(m), will not

impact our federal tax expense in the short-term due to our tax credit carryovers and associated valuation allowance. The Tax Act’s new international rules,
including Global Intangible Low-Taxed Income (“GILTI”), Foreign Derived Intangible Income (“FDII”), and Base Erosion Anti-Avoidance Tax (“BEAT”) are
effective beginning in 2018. We have included these effects of the Tax Act in our financial statements.

We periodically evaluate the realizability of our net deferred tax assets based on all available evidence, both positive and negative. During the third quarter of
2018, we assessed the changes in our underlying facts and circumstances and evaluated the realizability of our existing deferred tax assets based on all available
evidence, both positive and negative, and the weight accorded to each, and concluded a full valuation allowance associated with U.S. federal and California
deferred tax assets was appropriate. The basis for this conclusion was derived primarily from the fact that we completed our forecasting process during the third
quarter of 2018. At a domestic level, losses are expected in future periods in part due to the impact of the adoption of ASC 606. In addition, the decrease in the
U.S. federal tax rate from 35% to 21% as a result of U.S. tax reform has further reduced our ability to utilize our deferred tax assets. In light of the above factors,
we concluded that it is not more likely than

43

 
 
 
 
 
 
 
 
 
   
   
 
   
Table of Contents

not that we can realize our U.S. deferred tax assets. As such, we have set up and maintain a full valuation allowance against our U.S. federal deferred tax assets.

Liquidity and Capital Resources

Cash and cash equivalents

Marketable securities

Total cash, cash equivalents, and marketable securities

Net cash provided by operating activities

Net cash used in investing activities

Net cash provided by (used in) financing activities

Liquidity

December 31,
2018

December 31,
2017

$

$

(In millions)

115.9   $

161.9  

277.8   $

225.9

103.5

329.4

Years Ended December 31,

2018

2017

(In millions)

2016

$

$

$

87.1   $

(68.0)   $

(127.7)   $

117.4   $

(75.5)   $

46.5   $

95.6

(105.2)

2.7

We currently anticipate that existing cash, cash equivalents and marketable securities balances and cash flows from operations will be adequate to meet our
cash needs for at least the next 12 months. Additionally, the majority of our cash and cash equivalents is in the United States. Our cash needs for the year ended
December 31, 2018 were funded primarily from cash collected from our customers.

We do not anticipate any liquidity constraints as a result of either the current credit environment or investment fair value fluctuations. Additionally, we have the

intent and ability to hold our debt investments that have unrealized losses in accumulated other comprehensive gain (loss) for a sufficient period of time to allow
for recovery of the principal amounts invested. Additionally, we have no significant exposure to European sovereign debt. We continually monitor the credit risk in
our portfolio and mitigate our credit risk exposures in accordance with our policies.

As a part of our overall business strategy, from time to time, we evaluate businesses and technologies for potential acquisitions that are aligned with our core

business and designed to supplement our growth.

To provide us with more flexibility in returning capital back to our stockholders, on January 21, 2015, our Board authorized a share repurchase program
authorizing the repurchase of up to an aggregate of 20.0 million shares. During the first quarter of 2018, we entered into an accelerated share repurchase program
with Citibank N.A. to repurchase an aggregate of $50.0 million of our common stock and received an initial delivery of 3.1 million shares, which were retired and
recorded as a $40.0 million reduction to stockholders' equity. The remaining $10.0 million of the initial payment was recorded as a reduction to stockholders’
equity as an unsettled forward contract indexed to our stock. During the second quarter of 2018, the accelerated share repurchase program was completed and we
received an additional 0.7 million shares of our common stock as the final settlement of the accelerated share repurchase program. We may continue to tactically
execute our share repurchase program from time to time.

As of December 31, 2018, there remained an outstanding authorization to repurchase approximately 3.6 million shares of our outstanding common stock under

the current share repurchase program. See “Share Repurchase Program” below.

44

 
 
 
 
 
 
 
 
Operating Activities

Cash provided by operating activities of $87.1 million for the year ended December 31, 2018 was primarily attributable to the cash generated from customer
licensing, software license and related implementation, support and maintenance fees, product sales and engineering services fees. Changes in operating assets and
liabilities for the year ended December 31, 2018 primarily included increases in unbilled receivables, accounts receivable and prepaids and other current assets,
offset by decreases in accounts payable and accrued salaries and benefits and other liabilities.

Cash provided by operating activities of $117.4 million for the year ended December 31, 2017 was primarily attributable to cash generated from customer
licensing, software license and related implementation, support and maintenance fees, product sales and engineering services fees. Changes in operating assets and
liabilities for the year ended December 31, 2017 primarily included increases in accounts receivable and accrued salaries and benefits and other liabilities as well
as decreases in prepaids and other current assets.

Cash provided by operating activities of $95.6 million for the year ended December 31, 2016 was primarily attributable to the cash generated from customer
licensing, software license and related implementation, support and maintenance fees, product sales and engineering services fees. Changes in operating assets and
liabilities for the year ended December 31, 2016 primarily included a decrease in accrued salaries and benefits and other liabilities mainly due to the payout of the
Corporate Incentive Plan and increases in deferred revenue and inventory.

Investing Activities

Cash used in investing activities of $68.0 million for the year ended December 31, 2018 primarily consisted of purchases of available-for-sale marketable
securities of $282.1 million, $10.8 million paid to acquire property, plant and equipment and $3.0 million paid for investment in a privately held company, offset
by proceeds from the maturities of available-for-sale marketable securities of $223.1 million, proceeds from the sale of assets held for sale of $3.8 million and
proceeds from the sale of an equity security of $1.3 million.

Cash used in investing activities of $75.5 million for the year ended December 31, 2017 primarily consisted of cash paid for purchases of available-for-sale

marketable securities of $102.5 million and $9.4 million paid to acquire property, plant and equipment, offset by proceeds from the maturities and sales of
available-for-sale marketable securities of $32.0 million and $4.5 million, respectively.

Cash used in investing activities of $105.2 million for the year ended December 31, 2016 primarily consisted of cash paid for the acquisition of SCS of $92.6
million, net of cash acquired of $12.1 million, cash paid for the acquisition of the Memory Interconnect Business of $90.0 million, cash paid for the acquisition of
the assets of the Snowbush IP group assets of $32.0 million, cash paid for purchases of available-for-sale marketable securities of $54.9 million, $8.6 million paid
to acquire property, plant and equipment, offset by proceeds from the maturities and sales of available-for-sale marketable securities of $110.1 million and $50.5
million, respectively.

Financing Activities

Cash used in financing activities was $127.7 million for the year ended December 31, 2018 and was primarily due to the repayment of the remaining aggregate
principal of the 2018 Notes amounting to $81.2 million, which became due in August 2018, an aggregate payment of $50.0 million to Citibank N.A., as part of our
accelerated share repurchase program, and $6.8 million in payments of taxes on restricted stock units, offset by $11.4 million proceeds from the issuance of
common stock under equity incentive plans.

Cash provided by financing activities was $46.5 million for the year ended December 31, 2017 and was primarily due to $172.5 million from the issuance of
the 2023 Notes, $23.2 million from the issuance of warrants and $15.8 million proceeds from the issuance of common stock under equity incentive plans, offset by
$72.3 million paid for the repurchase of $56.8 million aggregate principal amount of the 2018 Notes and $15.5 million paid primarily for the conversion feature of
the repurchased 2018 Notes, an aggregate payment of $50.0 million to Barclays Bank PLC, as part of our accelerated share repurchase program, $33.5 million
related to the purchase of the Convertible Note Hedge Transactions, $5.1 million in payments of taxes on restricted stock units and $3.3 million in issuance costs
related to the issuance of the 2023 Notes.

45

Table of Contents

Cash provided by financing activities was $2.7 million for the year ended December 31, 2016. We received proceeds of $15.4 million from the issuance of
common stock under equity incentive plans, offset by the payment of the additional purchase consideration from the SCS acquisition of $10.2 million and $3.1
million in payments of taxes on restricted stock units.

Contractual Obligations

On December 15, 2009, we entered into a lease agreement for approximately 125,000 square feet of office space located at 1050 Enterprise Way in Sunnyvale,

California commencing on July 1, 2010 and expiring on June 30, 2020. The office space is used for our corporate headquarters, as well as engineering, sales,
marketing and administrative operations and activities. We have two options to extend the lease for a period of 60 months each and a one-time option to terminate
the lease after 84 months in exchange for an early termination fee. Pursuant to the terms of the lease, the landlord agreed to reimburse us approximately $9.1
million , which was received by the year ended December 31, 2011. We recognized the reimbursement as an additional imputed financing obligation as such
payment from the landlord is deemed to be an imputed financing obligation. On November 4, 2011, to better plan for future expansion, we entered into an amended
lease for our Sunnyvale facility for approximately an additional 31,000 square feet of space commencing on March 1, 2012 and expiring on June 30, 2020.
Additionally, a tenant improvement allowance to be provided by the landlord was approximately $1.7 million . On September 29, 2012, we entered into a second
amended Sunnyvale lease to reduce the tenant improvement allowance to approximately $1.5 million . On January 31, 2013, we entered into a third amendment to
the Sunnyvale lease to surrender the 31,000 square-foot space from the first amendment back to the landlord and recorded a total charge of $2.0 million related to
the surrender of the amended lease.

On March 8, 2010, we entered into a lease agreement for approximately 25,000 square feet of office and manufacturing areas, located in Brecksville, Ohio. The

office space was used for RLD’s engineering activities while the manufacturing space is used for the manufacturer of prototypes. This lease was amended on
September 29, 2011 to expand the facility to approximately 51,000 total square feet and the amended lease will expire on July 31, 2019. We have an option to
extend the lease for a period of 60 months . On January 30, 2018, we announced our plans to close our lighting division and manufacturing operations in
Brecksville, Ohio, and began the process to exit the facilities and sell the related equipment. Refer to Note 15, “Restructuring Charges,” of Notes to Consolidated
Financial Statements of this Form 10-K for additional details.

We undertook a series of structural improvements to ready the Sunnyvale and Brecksville facilities for our use. Since certain improvements to be constructed
by us were considered structural in nature and we were responsible for any cost overruns, for accounting purposes, we were treated in substance as the owner of the
construction project during the construction period. At the completion of each construction, we concluded that we retained sufficient continuing involvement to
preclude de-recognition of the building under the FASB authoritative guidance applicable to the sale leasebacks of real estate. As such, we continue to account for
the building as owned real estate and to record an imputed financing obligation for our obligation to the legal owners.

Monthly lease payments on the facility are allocated between the land element of the lease (which is accounted for as an operating lease) and the imputed

financing obligation. The imputed financing obligation is amortized using the effective interest method and the interest rate was determined in accordance with the
requirements of sale leaseback accounting. For the years ended December 31, 2018 , 2017 and 2016 , we recognized in our Consolidated Statements of Operations
$4.3 million , $4.4 million and $4.4 million , respectively, of interest expense in connection with the imputed financing obligation on these facilities. At
December 31, 2018 and 2017 , the imputed financing obligation balance in connection with these facilities was $37.6 million and $38.3 million , respectively,
which was primarily classified under long-term imputed financing obligation.

On November 17, 2017, we entered into an Indenture with U.S. Bank, National Association, as trustee, relating to the issuance by us of $172.5 million
aggregate principal amount of the 2023 Notes. The aggregate principal amount of the 2023 notes as of December 31, 2018 was $172.5 million , offset by
unamortized debt discount and unamortized debt issuance costs of $28.5 million and $2.0 million , respectively, on the accompanying consolidated balance sheets.
The unamortized discount related to the 2023 Notes is being amortized to interest expense using the effective method over the remaining 4.1 years until maturity of
the 2023 Notes on February 1, 2023. See Note 10, “Convertible Notes,” of Notes to Consolidated Financial Statements of this Form 10-K for additional details.

46

Table of Contents

As of December 31, 2018 , our material contractual obligations are as follows (in thousands):

Contractual obligations (1)

Imputed financing obligation (2)

Leases and other contractual obligations

Software licenses (3)

Convertible notes

Interest payments related to convertible notes

Total

2019

2020

2021

2022

2023

$

8,081   $

5,677   $

2,404   $

—   $

—   $

20,548  

12,002  

172,500  

10,680  

5,999  

7,510  

—  

2,372  

5,117  

2,995  

—  

2,372  

5,193  

1,497  

—  

2,372  

3,271  

—  

—  

2,372  

—

968

—

172,500

1,192

Total

$

223,811   $

21,558   $

12,888   $

9,062   $

5,643   $

174,660

______________________________________

(1) The above table does not reflect possible payments in connection with uncertain tax benefits of approximately $23.5 million including $21.4 million recorded
as a reduction of long-term deferred tax assets and $2.1 million in long-term income taxes payable, as of December 31, 2018 . As noted in Note 16, “Income
Taxes,” of Notes to Consolidated Financial Statements of this Form 10-K, although it is possible that some of the unrecognized tax benefits could be settled
within the next 12 months , we cannot reasonably estimate the outcome at this time.

(2) With respect to the imputed financing obligation, the main components of the difference between the amount reflected in the contractual obligations table and
the amount reflected on the Consolidated Balance Sheets are the interest on the imputed financing obligation and the estimated common area expenses over
the future periods. The amount includes the amended Ohio lease and the amended Sunnyvale lease.

(3) We have commitments with various software vendors for agreements generally having terms longer than one year.

Share Repurchase Program

On January 21, 2015, our Board approved a share repurchase program authorizing the repurchase of up to an aggregate of 20.0 million shares. Share

repurchases under the plan may be made through the open market, established plans or privately negotiated transactions in accordance with all applicable securities
laws, rules, and regulations. There is no expiration date applicable to the plan. 

On March 5, 2018, we initiated an accelerated share repurchase program with Citibank N.A. The accelerated share repurchase program is part of the broader
share repurchase program previously authorized by the Company's Board on January 21, 2015. Under the accelerated share repurchase program, we pre-paid to
Citibank N.A., the $50.0 million purchase price for our common stock and, in turn, we received an initial delivery of approximately 3.1 million shares of our
common stock from Citibank N.A., in the first quarter of 2018, which were retired and recorded as a $40.0 million reduction to stockholders' equity. The remaining
$10.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward contract indexed to our stock. During the second
quarter of 2018, the accelerated share repurchase program was completed and we received an additional 0.7 million shares of our common stock as the final
settlement of the accelerated share repurchase program. There were no other repurchases of our common stock during 2018.

On May 1, 2017, we initiated an accelerated share repurchase program with Barclays Bank PLC. The accelerated share repurchase program is part of the
broader share repurchase program previously authorized by our Board on January 21, 2015. Under the accelerated share repurchase program, we pre-paid to
Barclays Bank PLC, the $50.0 million purchase price for our common stock and, in turn, we received an initial delivery of approximately 3.2 million shares of our
common stock from Barclays Bank PLC, in the second quarter of 2017, which were retired and recorded as a $40.0 million reduction to stockholders' equity. The
remaining $10.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward contract indexed to our stock. The
number of shares to be ultimately purchased by us was determined based on the volume weighted average price of the common stock during the terms of the
transaction, minus an agreed upon discount between the parties. During the fourth quarter of 2017, the accelerated share repurchase program was completed and
we received an additional 0.8 million shares of our common stock as the final settlement of the accelerated share repurchase program. There were no other
repurchases of our common stock during 2017.

On October 26, 2015, we initiated an accelerated share repurchase program with Citibank, N.A. The accelerated share repurchase program is part of the broader

share repurchase program previously authorized by our Board on January 21, 2015. Under the accelerated share repurchase program, we pre-paid to Citibank,
N.A., the $100.0 million purchase price for our

47

 
 
 
 
 
 
 
   
   
   
   
   
common stock and, in turn, we received an initial delivery of approximately 7.8 million shares of our common stock from Citibank, N.A, in the fourth quarter of
2015, which were retired and recorded as a $80.0 million reduction to stockholders' equity. The remaining $20.0 million of the initial payment was recorded as a
reduction to stockholders’ equity as an unsettled forward contract indexed to our stock. The number of shares to be ultimately purchased by us was determined
based on the volume weighted average price of the common stock during the terms of the transaction, minus an agreed upon discount between the parties. During
the second quarter of 2016, the accelerated share repurchase program was completed and we received an additional 0.7 million shares of our common stock as the
final settlement of the accelerated share repurchase program. There were no other repurchases of our common stock during 2016.

As of December 31, 2018, there remained an outstanding authorization to repurchase approximately 3.6 million shares of our outstanding common stock under

the current share repurchase program.

We record stock repurchases as a reduction to stockholders’ equity. We record a portion of the purchase price of the repurchased shares as an increase to
accumulated deficit when the price of the shares repurchased exceeds the average original proceeds per share received from the issuance of common stock.

Warrants

In connection with the 2023 Notes, we separately entered into privately negotiated warrant transactions, whereby we sold to the Counterparties warrants (the

“Warrants”) to acquire, collectively, subject to anti-dilution adjustments, approximately 9.1 million shares of our common stock at an initial strike price of
approximately $23.30 per share, which represents a premium of 60% over the last reported sale price of our common stock of $14.56 on November 14, 2017. We
received aggregate proceeds of approximately $23.2 million from the sale of the Warrants to the Counterparties. The Warrants are separate transactions and are not
part of the 2023 Notes or Convertible Note Hedge Transactions. Holders of the 2023 Notes and Convertible Note Hedge Transactions will not have any rights with
respect to the Warrants. See Note 10, “Convertible Notes,” of Notes to Consolidated Financial Statements of this Form 10-K for additional details.

Critical Accounting Policies and Estimates

The discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared

in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and
judgments that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. On an ongoing
basis, we evaluate our estimates, including those related to revenue recognition, investments, income taxes, litigation and other contingencies. We base our
estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis
for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these
estimates under different assumptions or conditions.

We believe the following critical accounting policies affect our more significant judgments and estimates used in the preparation of our consolidated financial

statements.

Revenue Recognition

Overview

We recognize revenue upon transfer of control of promised goods and services in an amount that reflects the consideration we expect to receive in exchange for

those goods and services. Unless indicated otherwise below, all of the goods and services are distinct and are accounted for as separate performance obligations.

Where an arrangement includes multiple performance obligations, the transaction price is allocated to these on a relative standalone selling prices basis. We
have established standalone selling prices for all of our offerings - specifically, a same pricing methodology is consistently applied to all licensing arrangements;
all services offerings are priced within tightly controlled bands and all contracts that include support and maintenance state a renewal rate or price that is
systematically enforced.

Our revenue consists of royalty, product and contract and other revenue. Royalty revenue consists of patent and technology license royalties. Products consist
of memory buffer chipsets sold directly and indirectly to module manufacturers and OEMs worldwide through multiple channels, including our direct sales force
and distributors. Contract and other revenue consists of

48

software license fees, engineering fees associated with integration of our technology solutions into our customers’ products and support and maintenance fees.

Royalty Revenue

Our patent and technology licensing arrangements generally range between 1 and 7 years in duration and generally grant the licensee the right to use our entire

IP portfolio as it evolves over time. These arrangements do not typically grant the licensee the right to terminate for convenience and where such rights exist,
termination is prospective, with no refund of fees already paid by the licensee. There is no interdependency or interrelation between the IP included in the portfolio
licensed upon contract inception and any IP subsequently made available to the licensee, and we would be able to fulfill our promises by transferring the portfolio
and the additional IP use rights independently. However, the numbers of additions to, and removals from the portfolio (for example when a patent expires and
renewal is not granted to us) in any given period have historically been relatively consistent; as such, we do not allocate the transaction price between the rights
granted at contract inception and those subsequently granted over time as a function of these additions.

Patent and technology licensing arrangements result in fixed payments received over time, with guaranteed minimum payments on occasion, variable payments

calculated based on the licensee’s sale or use of the IP, or a mix of fixed and variable payments.

•

•

For fixed-fee arrangements (including arrangements that include minimum guaranteed amounts), variable royalty arrangements that we have concluded
are fixed in substance and the fixed portion of hybrid fixed/variable arrangements, we recognize revenue upon control over the underlying IP use right
transferring to the licensee, net of the effect of significant financing components calculated using customer-specific, risk-adjusted lending rates ranging
between 3% and 6%, with the related interest income being recognized over time on an effective rate basis. Where a licensee has the contractual right to
terminate a fixed-fee arrangement for convenience without any substantive penalty payable upon such termination, we apply the guidance in the New
Revenue Standard to the duration of the contract in which the parties have present enforceable rights and obligations and only recognizes revenue for
amounts that are due and payable.

For variable arrangements, we recognize revenue based on an estimate of the licensee’s sale or usage of the IP during the period of reference, typically
quarterly, with a true-up being recorded when we receive the actual royalty report from the licensee.

Product Revenue

Product revenue is recognized upon shipment of product to customers, net of accruals for estimated sales returns and allowances, and to distributors, net of
accruals for price protection and rights of return on products unsold by the distributors. To date, none of these accruals have been significant. We transact with
direct customers primarily pursuant to standard purchase orders for delivery of products and generally allow customers to cancel or change purchase orders within
limited notice periods prior to the scheduled shipment date.

Contract and Other Revenue

Contract and other revenue consists of software license fees and engineering fees associated with integration of our technology solutions into our customers’

solutions (or products) and related support and maintenance.

An initial software arrangement generally consists of a term-based or perpetual license, significant software customization services and support and
maintenance services that include post-implementation customer support and the right to unspecified software updates and enhancements on a when and if
available basis. We recognize the license and customization services revenue based on man-days incurred during the reporting period as compared to the estimated
total man-days necessary for each contract, and the support and maintenance revenue ratably over the term. We recognize license renewal revenue at the beginning
of the renewal period. We recognize revenue from professional services purchased in addition to an initial software arrangement on a cumulative catch-up basis if
these services are not distinct from the services provided as part of the initial software arrangement, or as a separate contract if these services are distinct.

During the first quarter of 2016, we acquired Smart Card Software Ltd., which included Bell Identification Ltd. (Payment Product Group) and Ecebs Ltd.

(Ticketing Products Group), which transact mostly in software and Software-as-a-Service arrangements, respectively.

Our Payment Product Group derives a significant portion of its revenue from heavily customized software in the mobile market, whereby the Payment Product

Group’s software solution interacts with third-party solutions and other payment platforms to provide the functionality the customer requires. Historically, these
third-party solutions have evolved at a rapid

49

 
pace, with the Payment Product Group being required to deliver as part of its support and maintenance services the patches and updates needed to maintain the
functionality of its own software offering. As the utility of the solution to the end customer erodes very quickly without these updates, these are viewed as critical
and the customized software solution and updates are not separately identifiable. As such, these arrangements are treated as a single performance obligation;
revenue is deferred until completion of the customization services, and recognized ratably over the committed support and maintenance term, typically ranging
from 1 year to 3 years.

Our Ticketing Products Group primarily derives revenue from ticketing services arrangements that systematically consist of a software component, support and

maintenance, managed services and hosting services. The software could be hosted by third-party hosting service providers or us. All arrangements entered into
subsequent to the acquisition preclude customers from taking possession of the software at any time during the hosting term and we have concluded that should a
customer that was under contract as of the acquisition date ever request possession of the software, the Ticketing Products Group would have the ability to charge
the customer, and enforce a claim to payment of a substantive fee in exchange for such right, and that the costs of setting up the environment needed to run the
software would act as a significant disincentive to the customer taking possession of the software. Based on the above, we concluded that these services are a single
performance obligation, with customers simultaneously receiving and consuming the benefits provided by the Ticketing Products Group’s performance, and
recognize ticketing services revenue ratably over the term, commencing upon completion of setup activities. We recognize setup fees upon completion. While
these activities do not transfer a service to the customer, we elected not to defer and amortize these fees over the expected duration of the customer relationship
owing to the immateriality of the amounts charged.

Significant Judgments

Historically and with the exceptions noted below, no significant judgment has generally been required in determining the amount and timing of revenue from

our contracts with customers.

•

For our contract and other revenue, revenue is recognized as services are performed on a percentage-of-completion basis, measured using the input
method. Due to the nature of the work performed in these arrangements, the estimation of percentage-of-completion is complex and involves significant
judgment. The key factor reviewed by us to estimate costs to complete each contract is the estimated man-days necessary to complete the project. If
circumstances arise that change the original estimates of extent of progress toward completion, revisions to the estimates are made that may result in
increases or decreases in estimated revenues or costs. Revisions are reflected in revenue on a cumulative catch-up basis in the period in which the
circumstances that gave rise to the revision become known. We have adequate tools and controls in place, and substantial experience and expertise in
timely and accurately tracking man-days incurred in completing customization and other professional services, and quantifying changes in estimates.

Key estimates used in recognizing revenue predominantly consist of the following:

•

All fixed-fee arrangements result in cash being received after control over the underlying IP use right has transferred to the licensee, and over a period
exceeding a year. As such, all these arrangements include a significant financing component. We calculate a customer-specific lending rate using a Daily
Treasury Yield Curve Rate that changes depending on the date on which the licensing arrangement was entered into and the term (in years) of the
arrangement, and take into consideration a licensee-specific risk profile determined based on a review of the licensee’s “Full Company View” Dun &
Bradstreet report obtained on the date the licensing arrangement was signed by the parties, with a risk premium being added to the Daily Treasury Yield
Curve Rate considering the overall business risk, financing strength and risk indicators, as listed.

• We recognize revenue on variable fee licensing arrangements on the basis of estimates. In connection with the adoption of the New Revenue Standard, we
have set up specific procedures and controls to ensure timely and accurate quantification of variable royalties, and implemented new systems to enable the
preparation of the estimates and reporting of the financial information required by the New Revenue Standard.

Goodwill

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business

combination. Goodwill is not subject to amortization, but is subject to at least an annual assessment for impairment, applying a fair-value based test. We perform
our impairment analysis of goodwill on an annual basis during the fourth quarter of the year unless conditions arise that warrant a more frequent evaluation.

50

Table of Contents

Goodwill is allocated to the various reporting units which are generally operating segments. The goodwill impairment test compares the fair value of each

reporting unit to its carrying value. The fair values of the reporting units are estimated using an income or discounted cash flows approach. Any goodwill
impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill.

Under the income approach, we measure fair value of the reporting unit based on a projected cash flow method using a discount rate determined by our

management which is commensurate with the risk inherent in our current business model. Our discounted cash flow projections are based on our annual financial
forecasts developed internally by management for use in managing our business. If the fair value of the reporting unit exceeds its carrying value, goodwill is not
impaired and no further testing is required. If the fair value of the reporting unit is less than the carrying value, then the amount of goodwill impairment will be the
amount by which the reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill.

As of December 31, 2018, the fair value of the MID reporting unit, with $66.6 million of goodwill, exceeded the carrying value of its net assets by

approximately 17% and the fair value of the RSD reporting unit, with $140.5 million of goodwill, exceeded the carrying value of its net assets by approximately
72% . Key assumptions used to determine the fair value of the MID and RSD reporting units at December 31, 2018, were the revenue growth rates for the forecast
period and terminal year, terminal growth rates and discount rates. Certain estimates used in the income approach involve information for new product lines with
limited financial history and developing revenue models which increase the risk of differences between the projected and actual performance. The discount rate of
16% for MID and 16.5% for RSD is based on the reporting units’ overall risk profile relative to other guideline companies, market adoption of our technology, the
reporting units’ respective industry as well as the visibility of future expected cash flows. The terminal growth rate applied to determine fair value for both
reporting units was 3% , which was based on historical experience as well as anticipated economic conditions, industry data and long term outlook for the business.
These assumptions are inherently uncertain.

Given the current economic environment and the uncertainties regarding the impact on our business, there can be no assurance that the estimates and
assumptions made for purposes of our goodwill impairment testing in the fourth quarter of 2018 will prove to be accurate predictions of the future. If our
assumptions regarding forecasted revenues or operating margin rates are not achieved, we may be required to record goodwill impairment charges in future
periods, whether in connection with the next annual impairment testing or prior to that if any change constitutes a triggering event outside of the period when the
annual goodwill impairment test is performed. It is not possible at this time to determine if any such future impairment charge would result or, if it does, whether
such charge would be material. We believe that the assumptions and rates used in our impairment test are reasonable. However, they are judgmental, and variations
in any of the assumptions or rates could result in materially different calculations of impairment amounts.

Intangible Assets

Intangible assets are comprised of existing technology, customer contracts and contractual relationships, and other definite-lived and indefinite-lived intangible
assets. Identifiable intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management
based on the fair value of assets received. Identifiable definite-lived intangible assets are being amortized over the period of estimated benefit using the straight-
line method and estimated useful lives ranging from 1 to 10 years.

We amortize definite-lived assets over their estimated useful lives. We evaluate definite-lived and indefinite-lived assets for impairment whenever events or
changes in circumstances indicate the carrying value of an asset may not be recoverable. The carrying value is not recoverable if it exceeds the undiscounted cash
flows resulting from the use of the asset and its eventual disposition. Our estimates of future cash flows attributable to our assets require significant judgment based
on our historical and anticipated results and are subject to many factors. Factors we consider important which could trigger an impairment review include
significant negative industry or economic trends, significant loss of clients, and significant changes in the manner of our use of the acquired assets or the strategy
for our overall business.

When we determine that the carrying value of the assets may not be recoverable based upon the existence of one or more of the above indicators of impairment,
we measure the potential impairment based on a projected discounted cash flow method using a discount rate determined by our management to be commensurate
with the risk inherent in our current business model. An impairment loss is recognized only if the carrying amount of the asset is not recoverable and exceeds its
fair value. Different assumptions and judgments could materially affect the calculation of the fair value of our assets.

Acquired indefinite-lived intangible assets related to our in-process research and development ("IPR&D") are capitalized and subject to impairment testing until
completion or abandonment of the projects. Upon successful completion of each project, we make a separate determination of useful life of the acquired indefinite-
lived intangible assets and the related amortization is recorded as an expense over the estimated useful life of the specific projects. Indefinite-lived intangible assets
are subject to at

51

Table of Contents

least an annual assessment for impairment, applying a fair-value based test. Under the income approach, we measure fair value of the indefinite-lived intangible
assets based on a projected cash flow method using a discount rate determined by our management which is commensurate with the risk inherent in our current
business model. Our discounted cash flow projections are based on our annual financial forecasts developed internally by our management for use in managing our
business. If the fair value of the indefinite-lived intangible assets exceeds its carrying value, the indefinite-lived intangible assets are not impaired and no further
testing is required. If the implied fair value of the indefinite-lived intangible assets is less than the carrying value, the difference is recorded as an impairment loss.

Income Taxes

As part of preparing our consolidated financial statements, we are required to calculate the income tax expense or benefit which relates to the pretax income or
loss for the period. In addition, we are required to assess the realization of the deferred tax asset or liability to be included on the consolidated balance sheet as of
the reporting dates.

As of December 31, 2018, our consolidated balance sheet included net deferred tax assets, before valuation allowance, of approximately $159.4 million, which
consists of net operating loss carryovers, tax credit carryovers, amortization, employee stock-based compensation expenses and certain liabilities, partially reduced
by deferred tax liabilities associated with the ASC 606 adoption. As of December 31, 2018, we have a valuation allowance of $173.9 million resulting in net
deferred tax liabilities of $14.5 million.

We maintain liabilities for uncertain tax positions within our long-term income taxes payable accounts and as a reduction to existing deferred tax assets to the
extent tax attributes are available to offset such liabilities. These liabilities involve judgment and estimation and are monitored by us based on the best information
available including changes in tax regulations, the outcome of relevant court cases and other information.

The calculation of our tax liabilities involves uncertainties in the application of complex tax law and regulations in a multitude of jurisdictions. Although ASC
740 Income Taxes, provides further clarification on the accounting for uncertainty in income taxes, significant judgment is required by us. If the ultimate resolution
of tax uncertainties is different from what is currently estimated, it could materially affect income tax expense.

Stock-Based Compensation

We maintained stock plans covering a broad range of potential equity grants including stock options, nonvested equity stock and equity stock units and
performance based instruments. In addition, we sponsor an Employee Stock Purchase Plan (“ESPP”), whereby eligible employees are entitled to purchase
Common Stock semi-annually, by means of limited payroll deductions, at a 15% discount from the fair market value of the Common Stock as of specific dates.

The accounting guidance for share-based payments requires the measurement and recognition of compensation expense in our statement of operations for all
share-based payment awards made to our employees, directors and consultants including employee stock options, nonvested equity stock and equity stock units,
and employee stock purchase grants. Stock-based compensation expense is measured at grant date, based on the estimated fair value of the award, reduced by an
estimate of the annualized rate of expected forfeitures, and is recognized as expense over the employees’ expected requisite service period, generally using the
straight-line method. In addition, the accounting guidance for share-based payments requires the benefits of tax deductions in excess of recognized compensation
expense to be reported as a financing cash flow, rather than as an operating cash flow as prescribed under previous accounting rules. Our forfeiture rate represents
the historical rate at which our stock-based awards were surrendered prior to vesting. The accounting guidance for share-based payments requires forfeitures to be
estimated at the time of grant and revised on a cumulative basis, if necessary, in subsequent periods if actual forfeitures differ from those estimates. See Note 12,
“Equity Incentive Plans and Stock-Based Compensation,” of Notes to Consolidated Financial Statements of this Form 10-K for more information regarding the
valuation of stock-based compensation.

Recent Accounting Pronouncements

See Note 3, “Recent Accounting Pronouncements,” of Notes to Consolidated Financial Statements of this Form 10-K for a full description of recent accounting

pronouncements including the respective expected dates of adoption.

Item 7A.

Quantitative and Qualitative Disclosures About Market Risk

We are exposed to financial market risks, primarily arising from the effect of interest rate fluctuations on our investment portfolio. Interest rate fluctuation may

arise from changes in the market’s view of the quality of the security issuer, the overall economic outlook, and the time to maturity of our portfolio. We mitigate
this risk by investing only in high quality, highly

52

liquid instruments. Securities with original maturities of one year or less must be rated by two of the three industry standard rating agencies as follows: A1 by
Standard & Poor’s, P1 by Moody’s and/or F-1 by Fitch. Securities with original maturities of greater than one year must be rated by two of the following industry
standard rating agencies as follows: AA- by Standard & Poor’s, Aa3 by Moody’s and/or AA- by Fitch. By corporate investment policy, we limit the amount of
exposure to $15.0 million or 10% of the portfolio, whichever is lower, for any single non-U.S. Government issuer. A single U.S. Agency can represent up to 25%
of the portfolio. No more than 20% of the total portfolio may be invested in the securities of an industry sector, with money market fund investments evaluated
separately. Our policy requires that at least 10% of the portfolio be in securities with a maturity of 90 days or less. We may make investments in U.S. Treasuries,
U.S. Agencies, corporate bonds and municipal bonds and notes with maturities up to 36 months. However, the bias of our investment portfolio is shorter
maturities. All investments must be U.S. dollar denominated. Additionally, we have no significant exposure to European sovereign debt.

We invest our cash equivalents and marketable securities in a variety of U.S. dollar financial instruments such as U.S. Treasuries, U.S. Government Agencies,

commercial paper and corporate notes. Our policy specifically prohibits trading securities for the sole purposes of realizing trading profits. However, we may
liquidate a portion of our portfolio if we experience unforeseen liquidity requirements. In such a case, if the environment has been one of rising interest rates we
may experience a realized loss, similarly, if the environment has been one of declining interest rates we may experience a realized gain. As of December 31, 2018,
we had an investment portfolio of fixed income marketable securities of $226.7 million including cash equivalents. If market interest rates were to increase
immediately and uniformly by 1.0% from the levels as of December 31, 2018, the fair value of the portfolio would decline by approximately $0.3 million. Actual
results may differ materially from this sensitivity analysis.

The fair value of our convertible notes is subject to interest rate risk, market risk and other factors due to the convertible feature. The fair value of the

convertible notes will generally increase as interest rates fall and decrease as interest rates rise. In addition, the fair value of the convertible notes will generally
increase as our common stock price increases and will generally decrease as our common stock price declines in value. The interest and market value changes
affect the fair value of our convertible notes but do not impact our financial position, cash flows or results of operations due to the fixed nature of the debt
obligation.

We invoice the majority of our customers in U.S. dollars. Although the fluctuation of currency exchange rates may impact our customers, and thus indirectly

impact us, we do not attempt to hedge this indirect and speculative risk. Our overseas operations consist primarily of international business operations in the
Netherlands and the United Kingdom, design centers in Canada, India and Finland and small business development offices in Australia, China, Japan, Korea,
Singapore and Taiwan. We monitor our foreign currency exposure; however, as of December 31, 2018, we believe our foreign currency exposure is not material
enough to warrant foreign currency hedging.

Item 8.

Financial Statements and Supplementary Data

See Item 15 “Exhibits and Financial Statement Schedules” of this Form 10-K for required financial statements and supplementary data.

Item 9.

Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None.

Item 9A.

Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures designed to ensure that information required to be disclosed in the reports we file or submit pursuant to the
Securities and Exchange Act of 1934 as amended (“Exchange Act”) is recorded, processed, summarized and reported within the time periods specified in the rules
and forms of the Securities and Exchange Commission, and that such information is accumulated and communicated to our management, including our Chief
Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

Management, with the participation of the Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our
disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act as of the end of the period covered by this report. Based on
this evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as of December 31, 2018, our disclosure controls and procedures
were effective.

53

Management’s Report on Internal Control over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f)

under the Exchange Act. Our internal control over financial reporting is the process designed by, or under the supervision of, our Chief Executive Officer and
Chief Financial Officer, and effected by our board of directors, management and other personnel, to provide reasonable assurance regarding the reliability of
financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles, and includes
those policies and procedures that:

(i)

pertain to the maintenance of records that in reasonable detail accurately and fairly reflect our transactions and dispositions of assets;

(ii)

provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally
accepted accounting principles, and that our receipts and expenditures are being made only in accordance with the authorization of our management and
directors; and

(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our 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.

Under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, we conducted an
assessment of the effectiveness of our internal control over financial reporting as of December 31, 2018. In making this assessment, our management used the
criteria set forth in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission
(“COSO”). Based on the results of this assessment, management has concluded that, as of December 31, 2018, our internal control over financial reporting was
effective based on the criteria in Internal Control — Integrated Framework (2013) issued by the COSO.

The effectiveness of our internal control over financial reporting as of December 31, 2018 has been audited by PricewaterhouseCoopers, LLP, an independent

registered public accounting firm, as stated in their report which appears herein.

Changes in Internal Control Over Financial Reporting

There was no change in internal control over financial reporting during the last fiscal quarter that has materially affected, or is reasonably likely to materially

affect, our internal control over financial reporting.

Item 9B.

Other Information

None.

54

Table of Contents

Item 10.

Directors, Executive Officers and Corporate Governance

PART III

The information responsive to this item is incorporated herein by reference to our Proxy Statement for our 2019 annual meeting of stockholders to be filed with

the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on
Form 10-K. The information under the heading “Our Executive Officers” in Part I, Item 1 of this Annual Report on Form 10-K is also incorporated herein by
reference.

We have a Code of Business Conduct and Ethics for all of our directors, officers and employees. Our Code of Business Conduct and Ethics is available on our

website at http://investor.rambus.com/default.aspx?SectionId=7d08773c-336a-43c5-b0ff-5b190f1901eb&LanguageId=1. To date, there have been no waivers
under our Code of Business Conduct and Ethics. We will post any amendments or waivers, if and when granted, of our Code of Business Conduct and Ethics on
our website.

Item 11.

Executive Compensation

The information responsive to this item is incorporated herein by reference to our Proxy Statement for our 2019 annual meeting of stockholders to be filed with

the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on
Form 10-K.

Item 12.

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

The information responsive to this item is incorporated herein by reference to our Proxy Statement for our 2019 annual meeting of stockholders to be filed with

the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on
Form 10-K.

Item 13.

Certain Relationships and Related Transactions, and Director Independence

The information responsive to this item is incorporated herein by reference to our Proxy Statement for our 2019 annual meeting of stockholders to be filed with

the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on
Form 10-K.

Item 14.

Principal Accountant Fees and Services

The information responsive to this item is incorporated herein by reference to our Proxy Statement for our 2019 annual meeting of stockholders to be filed with

the Securities and Exchange Commission pursuant to Regulation 14A not later than 120 days after the end of the fiscal year covered by this Annual Report on
Form 10-K.

55

Table of Contents

PART IV

Item 15.

Exhibits and Financial Statement Schedules

(a)    (1) Financial Statements

The following consolidated financial statements of the Registrant and Report of PricewaterhouseCoopers LLP, Independent Registered Public Accounting

Firm, are included herewith:

Report of Independent Registered Public Accounting Firm

Consolidated Balance Sheets as of December 31, 2018 and 2017

Consolidated Statements of Operations for the years ended December 31, 2018, 2017 and 2016

Consolidated Statements of Comprehensive Income (Loss) for the years ended December 31, 2018, 2017 and 2016

Consolidated Statements of Stockholders’ Equity for the years ended December 31, 2018, 2017 and 2016

Consolidated Statements of Cash Flows for the years ended December 31, 2018, 2017 and 2016

Notes to Consolidated Financial Statements

Consolidated Supplementary Financial Data (unaudited)

(a)    (2) Financial Statement Schedule

Page

57

59

60

61

62

64

65

105

All schedules are omitted because they are not applicable or the required information is shown in the Consolidated Financial Statements or the notes thereto.

56

 
Table of Contents

Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Rambus Inc.:

Opinions on the Financial Statements and Internal Control over Financial Reporting

We have audited the accompanying consolidated balance sheets of Rambus Inc. and its subsidiaries (the “Company”) as of December 31, 2018 and 2017, and the
related consolidated statements of operations, comprehensive income (loss), stockholders’ equity and cash flows for each of the three years in the period ended
December 31, 2018, including the related notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company's internal
control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee
of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December
31, 2018 and 2017, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2018 in conformity with
accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal
control over financial reporting as of December 31, 2018, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Change in Accounting Principle

As discussed in Note 3 to the consolidated financial statements, the Company changed the manner in which it accounts for revenues from contracts with customers
in 2018.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for
its assessment of the effectiveness of internal control over financial reporting, included in Management's Report on Internal Control over Financial Reporting under
Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial
reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United
States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and
regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable
assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal
control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial
statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence
regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant
estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal
control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists,
and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other
procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the
preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial
reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions
and dispositions of the assets of the company; (ii) provide reasonable assurance that transactions are recorded as necessary to

57

Table of Contents

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 (iii) provide reasonable assurance regarding prevention or
timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

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

/s/ PricewaterhouseCoopers LLP

San Jose, California

February 22, 2019

We have served as the Company's auditor since 1991.

58

 
 
 
 
 
 
Table of Contents

RAMBUS INC.

CONSOLIDATED BALANCE SHEETS

December 31,

2018

2017

(In thousands, except shares and per share
amounts)

ASSETS

$

115,924   $

Current assets:

Cash and cash equivalents

Marketable securities

Accounts receivable

Unbilled receivables

Inventories

Prepaids and other current assets

Total current assets

Intangible assets, net

Goodwill

Property, plant and equipment, net

Deferred tax assets

Unbilled receivables, long-term

Other assets

Total assets

Current liabilities:

Accounts payable

LIABILITIES & STOCKHOLDERS’ EQUITY

Accrued salaries and benefits

Convertible notes, short-term

Deferred revenue

Income taxes payable, short-term

Other current liabilities

Total current liabilities

Convertible notes, long-term

Long-term imputed financing obligation

Long-term income taxes payable

Deferred tax liabilities

Other long-term liabilities

Total liabilities

Commitments and contingencies (Notes 11 and 17)

Stockholders’ equity:

Convertible preferred stock, $.001 par value:

161,840  

50,863  

176,613  

6,772  

15,738  

527,750  

59,936  

207,178  

57,028  

4,435  

497,003  

7,825  

1,361,155   $

7,392   $

16,938  

—  

19,374  

16,390  

9,191  

69,285  

141,934  

36,297  

77,280  

18,960  

5,287  

$

$

225,844

103,532

25,326

566

5,159

11,317

371,744

91,722

209,661

54,303

159,099

—

4,543

891,072

9,614

17,091

78,451

18,272

258

9,156

132,842

135,447

37,262

3,344

9,830

763

349,043  

319,488

Authorized: 5,000,000 shares; Issued and outstanding: no shares at December 31, 2018 and December 31, 2017

—  

—

Common Stock, $.001 par value:

Authorized: 500,000,000 shares; Issued and outstanding: 109,017,708 shares at December 31, 2018 and

109,763,967 shares at December 31, 2017

Additional paid in capital

Accumulated deficit

Accumulated other comprehensive loss

Total stockholders’ equity

Total liabilities and stockholders’ equity

109  

1,226,588  

(204,294)  

(10,291)  

1,012,112  

$

1,361,155   $

110

1,212,798

(636,227)

(5,097)

571,584

891,072

See Notes to Consolidated Financial Statements

59

 
 
 
 
 
   
 
   
 
   
 
   
 
 
   
 
   
 
   
Table of Contents

RAMBUS INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

Years Ended December 31,

2018

2017

2016

(In thousands, except per share amounts)

$

130,452   $

289,594   $

Revenue:

Royalties

Product revenue

Contract and other revenue

Total revenue

Operating costs and expenses:

Cost of product revenue*

Cost of contract and other revenue

Research and development*

Sales, general and administrative*

Restructuring charges

Impairment of in-process research and development intangible asset

Change in contingent consideration liability

Gain from sale of intellectual property

Gain from settlement

Total operating costs and expenses

Operating income (loss)

Interest income and other income (expense), net

Loss on extinguishment of debt

Interest expense

Interest and other income (expense), net

Income (loss) before income taxes

Provision for income taxes

Net income (loss)

Net income (loss) per share:

Basic

Diluted

Weighted average shares used in per share calculations:

Basic

Diluted

______________________________________

* Includes stock-based compensation:

Cost of product revenue

Research and development

Sales, general and administrative

38,690  

62,059  

231,201  

18,299  

35,402  

158,339  

103,911  

2,217  

—  

—  

—  

—  

318,168  

(86,967)  

32,621  

—  

(16,282)  

16,339  

(70,628)  

87,329  

36,509  

66,993  

393,096  

23,783  

55,364  

149,135  

110,940  

—  

—  

—  

(533)  

—  

338,689  

54,407  

1,384  

(1,082)  

(13,720)  

(13,418)  

40,989  

63,851  

(157,957)   $

(22,862)   $

(1.46)   $

(1.46)   $

(0.21)   $

(0.21)   $

108,450  

108,450  

110,198  

110,198  

264,614

26,052

45,931

336,597

21,329

45,761

129,844

95,145

—

18,300

(6,845)

—

(579)

302,955

33,642

1,740

—

(12,745)

(11,005)

22,637

15,817

6,820

0.06

0.06

110,162

113,140

8   $

12,582   $

9,146   $

78   $

12,185   $

15,140   $

56

9,165

11,792

$

$

$

$

$

$

See Notes to Consolidated Financial Statements

60

 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

Net income (loss)

Other comprehensive income (loss):

Foreign currency translation adjustment

Unrealized gain (loss) on marketable securities, net of tax

Total comprehensive loss

Years Ended December 31,

2018

2017

2016

(In thousands)

(157,957)   $

(22,862)   $

6,820

(4,447)  

(747)  

7,798  

613  

(163,151)   $

(14,451)   $

(13,485)

(396)

(7,061)

$

$

See Notes to Consolidated Financial Statements

61

 
 
 
 
 
 
 
 
Table of Contents

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

RAMBUS INC.

Balances at December 31, 2015

109,288   $

109   $

1,130,368   $

(604,317)   $

373   $

526,533

Common Stock

Shares

Amount

  Additional Paid-in
Capital

Accumulated
Deficit

Accumulated Other
Comprehensive Gain
(Loss)

Total

(In thousands)

—  

—  

—  

—  

—  

—  

6,820  

—  

—  

—  

(13,485)

6,820

(13,485)

(396)  

(396)

Net income

Foreign currency translation adjustment

Unrealized loss on marketable securities, net of
tax

Issuance of common stock upon exercise of
options, equity stock and employee stock
purchase plan

Repurchase and retirement of common stock
under repurchase plan

Stock-based compensation

Balances at December 31, 2016

Net loss

Foreign currency translation adjustment

Unrealized gain on marketable securities, net of
tax

Issuance of common stock upon exercise of
options, equity stock and employee stock
purchase plan

Repurchase and retirement of common stock
under repurchase plan

Stock-based compensation

Equity component of 1.375% convertible notes,
net

Purchase of convertible note hedges

Issuance of warrants

Repurchase of 1.125% convertible notes

Cumulative effect adjustment from adoption of
ASU 2016-09

Net loss

Foreign currency translation adjustment

Unrealized loss on marketable securities, net of
tax

Issuance of common stock upon exercise of
options, equity stock and employee stock
purchase plan

Repurchase and retirement of common stock
under repurchase plan

Stock-based compensation

Issuance of common stock in connection with
the maturity of the 2018 Notes related to the
settlement of the in-the-money conversion
feature of the 2018 Notes

—  

—  

—  

2,502  

(736)  

—  

111,054

—  

—  

—  

(4,017)  

—  

—  

—  

—  

—  

—  

—  

—  

—  

2,616  

(3,786)  

—  

Balances at December 31, 2017

109,764  

2,727  

3  

10,730  

—  

3  

12,294  

—  

(1)  

—  

111

—  

—  

—  

17,555  

21,013  

1,181,230

—  

—  

—  

(17,554)  

—  

(615,051)

(22,862)  

—  

—  

(4)  

—  

—  

—  

—  

—  

—  

110  

—  

—  

—  

3  

(4)  

—  

(13,477)  

27,403  

33,913  

(33,523)  

23,173  

(16,651)  

—  

1,212,798  

—  

—  

—  

(36,557)  

—  

—  

—  

—  

—  

38,243  

(636,227)  

(157,957)  

—  

—  

4,627  

—  

(12,573)  

21,736  

(37,456)  

—  

—  

—  

—  

(13,508)

—  

7,798  

12,297

—

21,013

552,782

(22,862)

7,798

613  

613

—  

—  

—  

—  

—  

—  

—  

—  

(5,097)

—  

(4,447)  

10,733

(50,038)

27,403

33,913

(33,523)

23,173

(16,651)

38,243

571,584

(157,957)

(4,447)

(747)

(747)

—  

—  

—  

4,630

(50,033)

21,736

424  

—  

—  

—  

—  

—

62

 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Cumulative effect adjustment from adoption of
ASU 2016-01

Cumulative effect adjustment from the adoption
of ASC 606

—

—

—

1,058

—

1,058

—  

—  

—  

626,288  

—  

626,288

Balances at December 31, 2018

109,018   $

109   $

1,226,588   $

(204,294)   $

(10,291)   $

1,012,112

See Notes to Consolidated Financial Statements

63

 
 
 
 
 
Table of Contents

RAMBUS INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

Cash flows from operating activities:

Net income (loss)

Adjustments to reconcile net income (loss) to net cash provided by operating activities:

Stock-based compensation

Depreciation

Amortization of intangible assets

Non-cash interest expense and amortization of convertible debt issuance costs

Loss on extinguishment of debt

Impairment of in-process research and development intangible asset

Change in contingent consideration liability

Deferred tax (benefit) provision

Excess tax benefits from stock-based compensation

Non-cash restructuring

Gain from sale of assets held for sale

Gain from sale of marketable equity security

Loss on equity investment

Loss from sale of property and property, plant and equipment

Effect of exchange rate on assumed cash liability from acquisition

Change in operating assets and liabilities, net of effects of acquisitions:

Accounts receivable

Unbilled receivables

Prepaid expenses and other assets

Inventories

Accounts payable

Accrued salaries and benefits and other accrued liabilities

Income taxes payable

Deferred revenue

Net cash provided by operating activities

Cash flows from investing activities:

Purchases of property, plant and equipment

Acquisition of intangible assets

Purchases of marketable securities

Maturities of marketable securities

Proceeds from sale of marketable securities

Proceeds from sale of property and property, plant and equipment

Proceeds from sale of assets held for sale

Proceeds from sale of equity security

Investment in privately-held company

Acquisition of businesses, net of cash acquired

Net cash used in investing activities

Cash flows from financing activities:

Proceeds from issuance of 1.375% convertible notes

Issuance costs related to issuance of 1.375% convertible notes

    Payments for convertible note hedges

    Proceeds from issuance of warrants

    Repayment of 1.125% convertible notes

Proceeds received from issuance of common stock under employee stock plans

Principal payments against financing lease obligation

Years Ended December 31,

2018

2017

2016

(In thousands)

$

(157,957)   $

(22,862)   $

6,820

21,736  

10,745  

29,341  

9,243  

—  

—  

—  

27,403  

13,275  

41,962  

7,578  

1,082  

—  

—  

79,954  

39,535  

—  

670  

(1,266)  

(291)  

67  

395  

—  

(24,933)  

145,164  

(4,084)  

(1,856)  

(2,268)  

(3,221)  

(14,550)  

228  

—  

—  

—  

—  

—  

227  

—  

(1,110)  

—  

4,354  

473  

(651)  

4,703  

861  

607  

87,117  

117,437  

(10,762)  

(350)  

(282,117)  

223,079  

—  

10  

3,754  

1,350  

(3,000)  

—  

(9,385)  

(120)  

(102,497)  

32,048  

4,450  

33  

—  

—  

—  

—  

(68,036)  

(75,471)  

—  

—  

—  

—  

(81,207)  

11,402  

(1,080)  

172,500  

(3,277)  

(33,523)  

23,173  

(72,257)  

15,826  

(860)  

21,013

12,965

37,138

6,749

—

18,300

(6,845)

(7,116)

(1,196)

—

—

—

—

—

(1,558)

5,797

—

(6,205)

1,748

2,373

(1,519)

(175)

7,313

95,602

(8,556)

—

(54,869)

110,081

50,546

113

—

—

—

(202,523)

(105,208)

—

—

—

—

—

15,436

(661)

 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
 
 
 
Payment of additional purchase consideration from acquisition

—  

—  

(10,206)

Repurchase and retirement of common stock, including prepayment under accelerated share repurchase

program

Excess tax benefits from stock-based compensation

    Payments of taxes on restricted stock units

Net cash provided by (used in) financing activities

Effect of exchange rate changes on cash and cash equivalents

Net increase (decrease) in cash and cash equivalents

Cash and cash equivalents at beginning of year

Cash and cash equivalents at end of year

Supplemental disclosure of cash flow information:

Cash paid during the period for:

Interest

Income taxes, net of refunds

Non-cash investing and financing activities:

Property, plant and equipment received and accrued in accounts payable and other accrued liabilities

See Notes to Consolidated Financial Statements

64

(50,033)  

—  

(6,766)  

(127,684)  

(989)  

(109,592)  

225,844  

(50,038)  

—  

(5,099)  

46,445  

2,139  

90,550  

135,294  

116,252   $

225,844   $

—

1,196

(3,064)

2,701

(1,565)

(8,470)

143,764

135,294

3,044   $

23,581   $

1,553   $

22,733   $

1,553

26,787

8,225   $

1,092   $

576

$

$

$

$

 
 
   
   
 
   
   
 
   
   
 
   
   
Table of Contents

RAMBUS INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Formation and Business of the Company

Rambus Inc. (the “Company” or “Rambus”) was incorporated in California in March 1990 and reincorporated in Delaware in March 1997. In addition to
licensing, the Company is creating new business opportunities through offering products and services where its goal is to perpetuate strong company operating
performance and long-term stockholder value. The Company generates revenue by licensing its inventions and solutions, selling its semiconductor products and
providing services to market-leading companies.

Building upon the foundation of technologies for memory, SerDes and other chip interfaces, the Company has expanded its portfolio of inventions and solutions

to address chip and system security, as well as device provisioning and key management. The Company intends to continue its growth in leading-edge, high-
growth markets, consistent with its mission to create value through its innovations and to make those technologies available through the shipment of products, the
delivery of services, and licensing business models. Key to its efforts is continuing to hire and retain world-class inventors, scientists and engineers to lead the
development and deployment of inventions and technology solutions for its fields of focus.
2. Summary of Significant Accounting Policies

Financial Statement Presentation

The accompanying consolidated financial statements include the accounts of Rambus and its wholly owned subsidiaries. All intercompany accounts and

transactions have been eliminated in the accompanying consolidated financial statements. Investments in entities with more than  20%  ownership by Rambus and
in which Rambus has the ability to significantly influence the operations of the investee (but not control) are accounted for using the equity method and are
included in other assets.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions

that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported
amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates.

Reclassifications

Certain prior year balances were reclassified to conform to the current year’s presentation. None of these reclassifications had an impact on reported net income

or cash flows for any of the periods presented.

Revenue Recognition

Overview

The Company recognizes revenue upon transfer of control of promised goods and services in an amount that reflects the consideration it expects to receive in
exchange for those goods and services. Unless indicated otherwise below, all of the goods and services are distinct and are accounted for as separate performance
obligations.

Where an arrangement includes multiple performance obligations, the transaction price is allocated to these on a relative standalone selling prices basis. The

Company has established standalone selling prices for all of its offerings - specifically, a same pricing methodology is consistently applied to all licensing
arrangements; all services offerings are priced within tightly controlled bands and all contracts that include support and maintenance state a renewal rate or price
that is systematically enforced.

Rambus’ revenue consists of royalty, product and contract and other revenue. Royalty revenue consists of patent and technology license royalties. Products
consist of memory buffer chipsets sold directly and indirectly to module manufacturers and OEMs worldwide through multiple channels, including our direct sales
force and distributors. Contract and other revenue consists of software license fees, engineering fees associated with integration of Rambus’ technology solutions
into its customers’ products and support and maintenance fees.

Royalty Revenue

65

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Rambus’ patent and technology licensing arrangements generally range between 1 and 7 years in duration and generally grant the licensee the right to use the
Company's entire IP portfolio as it evolves over time. These arrangements do not typically grant the licensee the right to terminate for convenience and where such
rights exist, termination is prospective, with no refund of fees already paid by the licensee. There is no interdependency or interrelation between the IP included in
the portfolio licensed upon contract inception and any IP subsequently made available to the licensee, and the Company would be able to fulfill its promises by
transferring the portfolio and the additional IP use rights independently. However, the numbers of additions to, and removals from the portfolio (for example when
a patent expires and renewal is not granted to the Company) in any given period have historically been relatively consistent; as such, the Company does not
allocate the transaction price between the rights granted at contract inception and those subsequently granted over time as a function of these additions.

Patent and technology licensing arrangements result in fixed payments received over time, with guaranteed minimum payments on occasion, variable payments

calculated based on the licensee’s sale or use of the IP, or a mix of fixed and variable payments.

•

•

For fixed-fee arrangements (including arrangements that include minimum guaranteed amounts), variable royalty arrangements that the Company has
concluded are fixed in substance and the fixed portion of hybrid fixed/variable arrangements, the Company recognizes revenue upon control over the
underlying IP use right transferring to the licensee, net of the effect of significant financing components calculated using customer-specific, risk-adjusted
lending rates ranging between 3% and 6% , with the related interest income being recognized over time on an effective rate basis. Where a licensee has
the contractual right to terminate a fixed-fee arrangement for convenience without any substantive penalty payable upon such termination, the Company
applies the guidance in the New Revenue Standard to the duration of the contract in which the parties have present enforceable rights and obligations and
only recognizes revenue for amounts that are due and payable.

For variable arrangements, the Company recognizes revenue based on an estimate of the licensee’s sale or usage of the IP during the period of reference,
typically quarterly, with a true-up being recorded when the Company receives the actual royalty report from the licensee.

Product Revenue

Product revenue is recognized upon shipment of product to customers, net of accruals for estimated sales returns and allowances, and to distributors, net of

accruals for price protection and rights of return on products unsold by the distributors. To date, none of these accruals have been significant. The Company
transacts with direct customers primarily pursuant to standard purchase orders for delivery of products and generally allows customers to cancel or change
purchase orders within limited notice periods prior to the scheduled shipment date.

Contract and Other Revenue

Contract and other revenue consists of software license fees and engineering fees associated with integration of Rambus’ technology solutions into its

customers’ solutions (or products) and related support and maintenance.

An initial software arrangement generally consists of a term-based or perpetual license, significant software customization services and support and
maintenance services that include post-implementation customer support and the right to unspecified software updates and enhancements on a when and if
available basis. The Company recognizes the license and customization services revenue based on man-days incurred during the reporting period as compared to
the estimated total man-days necessary for each contract, and the support and maintenance revenue ratably over the term. The Company recognizes license renewal
revenue at the beginning of the renewal period. The Company recognizes revenue from professional services purchased in addition to an initial software
arrangement on a cumulative catch-up basis if these services are not distinct from the services provided as part of the initial software arrangement, or as a separate
contract if these services are distinct.

During the first quarter of 2016, the Company acquired Smart Card Software Ltd., which included Bell Identification Ltd. (Payment Product Group) and Ecebs

Ltd. (Ticketing Products Group), which transact mostly in software and Software-as-a-Service arrangements, respectively.

The Company's Payment Product Group derives a significant portion of its revenue from heavily customized software in the mobile market, whereby the
Payment Product Group’s software solution interacts with third-party solutions and other payment platforms to provide the functionality the customer requires.
Historically, these third-party solutions have evolved at a rapid pace, with the Payment Product Group being required to deliver as part of its support and
maintenance services the patches and updates needed to maintain the functionality of its own software offering. As the utility of the solution to the end customer

66

 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

erodes very quickly without these updates, these are viewed as critical and the customized software solution and updates are not separately identifiable. As such,
these arrangements are treated as a single performance obligation; revenue is deferred until completion of the customization services, and recognized ratably over
the committed support and maintenance term, typically ranging from 1 year to 3 years .

The Company's Ticketing Products Group primarily derives revenue from ticketing services arrangements that systematically consist of a software component,

support and maintenance, managed services and hosting services. The software could be hosted by third-party hosting service providers or the Company. All
arrangements entered into subsequent to the acquisition preclude customers from taking possession of the software at any time during the hosting term and the
Company has concluded that should a customer that was under contract as of the acquisition date ever request possession of the software, the Ticketing Products
Group would have the ability to charge the customer, and enforce a claim to payment of a substantive fee in exchange for such right, and that the costs of setting up
the environment needed to run the software would act as a significant disincentive to the customer taking possession of the software. Based on the above, the
Company concluded that these services are a single performance obligation, with customers simultaneously receiving and consuming the benefits provided by the
Ticketing Products Group’s performance, and recognize ticketing services revenue ratably over the term, commencing upon completion of setup activities. The
Company recognizes setup fees upon completion. While these activities do not transfer a service to the customer, the Company elected not to defer and amortize
these fees over the expected duration of the customer relationship owing to the immateriality of the amounts charged.

Significant Judgments

Historically and with the exceptions noted below, no significant judgment has generally been required in determining the amount and timing of revenue from

the Company's contracts with customers.

•

For the Company's contract and other revenue, revenue is recognized as services are performed on a percentage-of-completion basis, measured using the
input method. Due to the nature of the work performed in these arrangements, the estimation of percentage-of-completion is complex and involves
significant judgment. The key factor reviewed by the Company to estimate costs to complete each contract is the estimated man-days necessary to
complete the project. If circumstances arise that change the original estimates of extent of progress toward completion, revisions to the estimates are made
that may result in increases or decreases in estimated revenues or costs. Revisions are reflected in revenue on a cumulative catch-up basis in the period in
which the circumstances that gave rise to the revision become known. The Company has adequate tools and controls in place, and substantial experience
and expertise in timely and accurately tracking man-days incurred in completing customization and other professional services, and quantifying changes
in estimates.

Key estimates used in recognizing revenue predominantly consist of the following:

•

•

All fixed-fee arrangements result in cash being received after control over the underlying IP use right has transferred to the licensee, and over a period
exceeding a year. As such, all these arrangements include a significant financing component. The Company calculates a customer-specific lending rate
using a Daily Treasury Yield Curve Rate that changes depending on the date on which the licensing arrangement was entered into and the term (in years)
of the arrangement, and takes into consideration a licensee-specific risk profile determined based on a review of the licensee’s “Full Company View” Dun
& Bradstreet report obtained on the date the licensing arrangement was signed by the parties, with a risk premium being added to the Daily Treasury
Yield Curve Rate considering the overall business risk, financing strength and risk indicators, as listed.

The Company recognizes revenue on variable fee licensing arrangements on the basis of estimates. In connection with the adoption of the New Revenue
Standard, the Company has set up specific procedures and controls to ensure timely and accurate quantification of variable royalties, and implemented
new systems to enable the preparation of the estimates and reporting of the financial information required by the New Revenue Standard.

Contract Balances

Timing of revenue recognition may differ from the timing of invoicing to the Company's customers. The Company records contract assets when revenue is

recognized prior to invoicing, and a contract liability when revenue is recognized subsequent to invoicing.

67

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

The contract assets are primarily related to the Company’s fixed fee IP licensing arrangements and rights to consideration for performance obligations delivered

but not billed as of December 31, 2018 . The contract assets are transferred to receivables when the billing occurs.

The Company’s contract balances were as follows:

(In thousands)

Unbilled receivables

Deferred revenue

As of

December 31,
2018

  January 1, 2018

$

673,616   $

19,566  

818,371

20,737

During the year ended December 31, 2018 , the Company recognized $20.5 million of revenue that was included in the deferred revenue balance, as adjusted

for ASC 606, as of January 1, 2018.

Revenue allocated to remaining performance obligations represents the transaction price allocated to the performance obligations that are unsatisfied, or
partially unsatisfied, which includes unearned revenue and amounts that will be invoiced and recognized as revenue in future periods. Contracted but unsatisfied
performance obligations were approximately $34.0 million as of December 31, 2018 , which the Company primarily expects to recognize over the next 2 years .

Cost of Revenue

Cost of revenue includes cost of professional services, materials, including cost of wafers processed by third-party foundries, cost associated with packaging

and assembly, test and shipping, cost of personnel, including stock-based compensation, and equipment associated with manufacturing support, logistics and
quality assurance, warranty cost, amortization of developed technology, amortization of step-up values of inventory from acquisitions, write down of inventories,
amortization of production mask costs, overhead and an allocated portion of occupancy costs.

Goodwill

Goodwill represents the excess of the purchase price over the fair value of the net tangible and identifiable intangible assets acquired in each business

combination. Goodwill is not subject to amortization, but is subject to at least an annual assessment for impairment, applying a fair-value based test. The Company
performs its impairment analysis of goodwill on an annual basis during the fourth quarter of the year unless conditions arise that warrant a more frequent
evaluation.

Goodwill is allocated to the various reporting units which are generally operating segments. The goodwill impairment test compares the fair value of each

reporting unit to its carrying value. The fair values of the reporting units are estimated using an income or discounted cash flows approach. Any goodwill
impairment will be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill.

Under the income approach, the Company measures fair value of the reporting unit based on a projected cash flow method using a discount rate determined by

its management which is commensurate with the risk inherent in its current business model. The Company’s discounted cash flow projections are based on its
annual financial forecasts developed internally by management for use in managing its business. If the fair value of the reporting unit exceeds its carrying value,
goodwill is not impaired and no further testing is required. If the fair value of the reporting unit is less than the carrying value, then the amount of goodwill
impairment will be the amount by which the reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill.

The Company performed its annual goodwill impairment analysis as of December 31, 2018 and determined that the fair value of the reporting units with

goodwill exceeded their carrying values.

Intangible Assets

Intangible assets are comprised of existing technology, customer contracts and contractual relationships, and other definite-lived and indefinite-lived intangible
assets. Identifiable intangible assets resulting from the acquisitions of entities accounted for using the purchase method of accounting are estimated by management
based on the fair value of assets received. Identifiable definite-lived intangible assets are being amortized over the period of estimated benefit using the straight-
line method and estimated useful lives ranging from 1 to 10 years .

68

 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Acquired indefinite-lived intangible assets related to the Company's in-process research and development ("IPR&D") are capitalized and subject to impairment

testing until completion or abandonment of the projects. Upon successful completion of each project, the Company makes a separate determination of the useful
life of the acquired indefinite-lived intangible assets and the related amortization is recorded as an expense over the estimated useful life of the specific projects.
Indefinite-lived intangible assets are subject to at least an annual assessment for impairment, applying a fair-value based test. Under the income approach, the
Company measures fair value of the indefinite-lived intangible assets based on a projected cash flow method using a discount rate determined by its management
which is commensurate with the risk inherent in its current business model. The Company’s discounted cash flow projections are based on its annual financial
forecasts developed internally by management for use in managing its business. If the fair value of the indefinite-lived intangible assets exceeds its carrying value,
the indefinite-lived intangible assets are not impaired and no further testing is required. If the implied fair value of the indefinite-lived intangible assets is less than
the carrying value, the difference is recorded as an impairment loss.

Inventories

Inventories are stated at the lower of cost or net realizable value. Cost is computed using standard cost, which approximates actual cost, on a first-in, first-out
basis. Inventories are reduced for write downs based on periodic reviews for evidence of slow-moving or obsolete parts. The write-down is based on comparison
between inventory on hand and estimated future sales for each specific product. Once written down, inventory write downs are not reversed until the inventory is
sold or scrapped. Inventory write downs are also established when conditions indicate that the net realizable value is less than cost due to physical deterioration,
obsolescence, changes in price level or other causes.

Property, Plant and Equipment

Property, plant and equipment include computer equipment, computer software, machinery, leasehold improvements, furniture and fixtures and buildings.

Computer equipment, computer software, machinery, and furniture and fixtures are stated at cost and generally depreciated on a straight-line basis over an
estimated useful life of 3 , 3 to 5 , 2 or 7 , and 3 years , respectively. In past years, the Company undertook a series of structural improvements to ready the
Sunnyvale and Brecksville facilities for its use. The Company concluded that its requirement to fund construction costs and responsibility for cost overruns
resulted in the Company being considered the owner of the buildings during the construction period for accounting purposes. Upon completion of construction, the
Company concluded that it retained sufficient continuing involvement to preclude de-recognition of the buildings under the FASB's authoritative guidance
applicable to sale leaseback for real estate. As such, the Company continues to account for the buildings as owned real estate and to record an imputed financing
obligation for its obligation to the legal owners. The buildings are being depreciated on a straight-line basis over an estimated useful life of approximately 39 years
. See Note 9, “Balance Sheet Details,” and Note 11, “Commitments and Contingencies,” for additional details. Leasehold improvements are amortized on a
straight-line basis over the shorter of their estimated useful lives or the initial terms of the leases. Upon disposal, assets and related accumulated depreciation are
removed from the accounts and the related gain or loss is included in the results from operations.

Definite-Lived and Indefinite-Lived Asset Impairment

The Company evaluates definite-lived and indefinite-lived assets (including property, plant and equipment and intangible assets) for impairment whenever
events or changes in circumstances indicate the carrying value of an asset group may not be recoverable. The carrying value is not recoverable if it exceeds the
undiscounted cash flows resulting from the use of the asset group and its eventual disposition. The Company’s estimates of future cash flows attributable to its
asset groups require significant judgment based on its historical and anticipated results and are subject to many factors. Factors that the Company considers
important which could trigger an impairment review include significant negative industry or economic trends, significant loss of clients, and significant changes in
the manner of its use of the acquired assets or the strategy for its overall business.

When the Company determines that the carrying value of the asset groups may not be recoverable based upon the existence of one or more of the above

indicators of impairment, the Company measures the potential impairment based on a projected discounted cash flow method using a discount rate determined by
the Company to be commensurate with the risk inherent in the Company’s current business model. An impairment loss is recognized only if the carrying amount of
the asset group is not recoverable and exceeds its fair value. The impairment charge is recorded to reduce the pre-impairment carrying amount of the assets based
on the relative carrying amount of those assets, though not to reduce the carrying amount of an asset below its fair value. Different assumptions and judgments
could materially affect the calculation of the fair value of the assets. During 2018 and 2017, the Company did not recognize any impairment of its definite-lived
and indefinite-lived assets. During 2016, the Company recognized an impairment of its IPR&D intangible asset of $18.3 million.

69

Table of Contents

Income Taxes

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Income taxes are accounted for using an asset and liability approach, which requires the recognition of deferred tax assets and liabilities for expected future tax
events that have been recognized differently in Rambus' consolidated financial statements and tax returns. The measurement of current and deferred tax assets and
liabilities is based on provisions of the enacted tax law and the effects of future changes in tax laws or rates are not anticipated. A valuation allowance is
established when necessary to reduce deferred tax assets to amounts expected to be realized based on available evidence.

In addition, the calculation of the Company's tax liabilities involves dealing with uncertainties in the application of complex tax regulations. As a result, the

Company reports a liability for unrecognized tax benefits resulting from uncertain tax positions taken or expected to be taken in its tax return. The Company
considers many factors when evaluating and estimating its tax positions and tax benefits, which may require periodic adjustments and which may not accurately
anticipate actual outcomes.

Stock-Based Compensation and Equity Incentive Plans

The Company maintained stock plans covering a broad range of equity grants including stock options, nonvested equity stock and equity stock units and
performance based instruments. In addition, the Company sponsors an Employee Stock Purchase Plan (“ESPP”), whereby eligible employees are entitled to
purchase Common Stock semi-annually, by means of limited payroll deductions, at a 15% discount from the fair market value of the Common Stock as of specific
dates.

The Company determines compensation expense associated with restricted stock units based on the fair value of its common stock on the date of grant. The
Company determines compensation expense associated with stock options based on the estimated grant date fair value method using the Black-Scholes Merton
valuation model. The Company generally recognizes compensation expense using a straight-line amortization method over the respective vesting period for awards
that are ultimately expected to vest. Stock-based compensation expense for 2018 , 2017 and 2016 has been reduced for estimated forfeitures. When estimating
forfeitures, the Company considers voluntary termination behaviors as well as trends of actual option forfeitures.

Cash and Cash Equivalents

Cash equivalents are highly liquid investments with original maturity of three months or less at the date of purchase. The Company maintains its cash balances

with high quality financial institutions. Cash equivalents are invested in highly-rated and highly-liquid money market securities and certain U.S. government
sponsored obligations.

Marketable Securities

Available-for-sale securities are carried at fair value, based on quoted market prices, with the unrealized gains or losses reported, net of tax, in stockholders’
equity as part of accumulated other comprehensive income (loss). The amortized cost of debt securities is adjusted for amortization of premiums and accretion of
discounts to maturity, both of which are included in interest and other income, net. Realized gains and losses are recorded on the specific identification method and
are included in interest and other income, net. The Company reviews its investments in marketable securities for possible other than temporary impairments on a
regular basis. If any loss on investment is believed to be a credit loss, a charge will be recognized in operations. In evaluating whether a credit loss on a debt
security has occurred, the Company considers the following factors: 1) the Company’s intent to sell the security, 2) if the Company intends to hold the security,
whether or not it is more likely than not that the Company will be required to sell the security before recovery of the security’s amortized cost basis and 3) even if
the Company intends to hold the security, whether or not the Company expects the security to recover the entire amortized cost basis. Due to the high credit quality
and short term nature of the Company’s investments, there have been no material credit losses recorded to date. The classification of funds between short-term and
long-term is based on whether the securities are available for use in operations or other purposes.

Fair Value of Financial Instruments

The carrying value of cash equivalents, accounts receivable and accounts payable approximate their fair values due to their relatively short maturities as of
December 31, 2018 and 2017 . Marketable securities are comprised of available-for-sale securities that are reported at fair value with the related unrealized gains
and losses included in accumulated other comprehensive income (loss), a component of stockholders’ equity, net of tax. Fair value of the marketable securities is
determined based on quoted market prices. The fair value of the Company's convertible notes fluctuates with interest rates and with the market price of the
common stock, but does not affect the carrying value of the debt on the balance sheet.

70

Table of Contents

Research and Development

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Costs incurred in research and development, which include engineering expenses, such as salaries and related benefits, stock-based compensation, depreciation,

professional services and overhead expenses related to the general development of Rambus’ products, are expensed as incurred. Software development costs are
capitalized beginning when a product’s technological feasibility has been established and ending when a product is available for general release to customers.
Rambus has not capitalized any software development costs since the period between establishing technological feasibility and general customer release is
relatively short and as such, these costs have not been material.

Computation of Earnings (Loss) Per Share

Basic earnings (loss) per share is calculated by dividing the net income (loss) by the weighted average number of common shares outstanding during the period.
Diluted earnings (loss) per share is calculated by dividing the earnings (loss) by the weighted average number of common shares and potentially dilutive securities
outstanding during the period. Potentially dilutive common shares consist of incremental common shares issuable upon exercise of stock options, employee stock
purchases, restricted stock and restricted stock units, and shares issuable upon the conversion of convertible notes. The dilutive effect of outstanding shares is
reflected in diluted earnings per share by application of the treasury stock method. This method includes consideration of the amounts to be paid by the employees,
the amount of excess tax benefits that would be recognized in equity if the instrument was exercised and the amount of unrecognized stock-based compensation
related to future services. No potential dilutive common shares are included in the computation of any diluted per share amount when a net loss is reported.

Comprehensive Income (Loss)

Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances
from non-owner sources, including foreign currency translation adjustments and unrealized gains and losses on marketable securities. Other comprehensive income
(loss), net of tax, is presented in the consolidated statements of comprehensive income (loss).

Credit Concentration

As of December 31, 2018 and 2017 , the Company’s cash, cash equivalents and marketable securities were invested with various financial institutions in the

form of corporate notes, bonds and commercial paper, money market funds, U.S. Treasuries, U.S. Government Agencies, and municipal bonds and notes. The
Company’s exposure to market risk for changes in interest rates relates primarily to its investment portfolio. The Company places its investments with high credit
issuers and, by investment policy, attempts to limit the amount of credit exposure to any one issuer. As stated in the Company’s investment policy, it will ensure
the safety and preservation of the Company’s invested funds by limiting default risk and market risk. The Company has no investments denominated in foreign
country currencies and therefore is not subject to foreign exchange risk from these assets.

The Company mitigates default risk by investing in high credit quality securities and by positioning its portfolio to respond appropriately to a significant
reduction in a credit rating of any investment issuer or guarantor. The portfolio includes only marketable securities with active secondary or resale markets to
enable portfolio liquidity.

The Company’s note hedge transactions, entered into in connection with the 1.375% convertible senior notes due 2023 (the "2023 Notes"), expose the
Company to credit risk to the extent that its counterparties may be unable to meet the terms of the transactions. The Company mitigates this risk by limiting its
counterparties to major financial institutions. See Note 10, "Convertible Notes" for further details.

The Company's accounts receivable are derived from revenue earned from customers located in the U.S. and internationally. See Note 6, "Segments and Major

Customers" for further details.

Foreign Currency Translation and Re-measurement

The Company translates the assets and liabilities of its non-U.S. dollar functional currency subsidiaries into U.S. dollars using exchange rates in effect at the
end of each period. Revenue and expenses for these subsidiaries are translated using rates that approximate those in effect during the period. Gains and losses from
these translations are recognized in foreign currency translation included in Accumulated Other Comprehensive Gain (Loss) in the consolidated statements of
stockholders’ equity. The Company’s subsidiaries that use the U.S. dollar as their functional currency re-measure monetary assets and liabilities at exchange rates
in effect at the end of each period, and inventories, property and non-monetary assets and liabilities at historical

71

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

rates. Additionally, foreign currency transaction gains and losses are included in interest income and other (income) expense, net, in the consolidated statements of
operations and were not material in the periods presented.

Business Combinations

The Company accounts for acquisitions of businesses using the purchase method of accounting, which requires the Company to recognize separately from

goodwill the assets acquired and the liabilities assumed at their acquisition date fair values. While the Company uses its best estimates and assumptions to
accurately value assets acquired and liabilities assumed at the acquisition date as well as contingent consideration, where applicable, the estimates are inherently
uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the acquisition date, the Company may record
adjustments to the assets acquired and liabilities assumed with the corresponding offset to goodwill. Upon the conclusion of the measurement period or final
determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements
of operations.

Accounting for business combinations requires management to make significant estimates and assumptions, especially at the acquisition date including the
Company’s estimates for intangible assets, contractual obligations assumed and pre-acquisition contingencies where applicable. Although, the Company believes
the assumptions and estimates made in the past have been reasonable and appropriate, they are based in part on historical experience and information obtained
from the management of the acquired companies and are inherently uncertain. Critical estimates in valuing certain of the intangible assets the Company acquired
include future expected cash flows from product sales, customer contracts and acquired technologies, expected costs to develop IPR&D into commercially viable
products and estimated cash flows from the projects when completed and discount rates. Unanticipated events and circumstances may occur that may affect the
accuracy or validity of such assumptions, estimates or actual results.

Litigation

Rambus may be involved in certain legal proceedings. Based upon consultation with outside counsel handling its defense in these matters and an analysis of
potential results, if Rambus believes that a loss arising from such matters is probable and can be reasonably estimated, Rambus records the estimated liability in its
consolidated financial statements. If only a range of estimated losses can be determined, Rambus records an amount within the range that, in its judgment, reflects
the most likely outcome; if none of the estimates within that range is a better estimate than any other amount, Rambus records the low end of the range. Any such
accrual would be charged to expense in the appropriate period. Rambus recognizes litigation expenses in the period in which the litigation services were provided.

3. Recent Accounting Pronouncements

Recent Accounting Pronouncements Adopted

In February 2018, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2018-02, "Income Statement - Reporting

Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income". The amendments in this ASU
allow entities to reclassify from AOCI to retained earnings "stranded" tax effects resulting from passage of the Tax Cuts and Jobs Act ("the Tax Act") on
December 22, 2017. An entity that elects to reclassify these amounts must reclassify stranded tax effects related to the change in federal tax rate for all items
accounted for in other comprehensive income (e.g., employee benefits, cumulative translation adjustments). Entities may also elect to reclassify other stranded tax
effects that relate to the Tax Act but do not directly relate to the change in the federal tax rate (e.g., state taxes). However, because the amendments only relate to
the reclassification of the income tax effects of the Tax Act, the underlying guidance requiring the effect of a change in tax laws or rates to be included in income
from operations is not affected. Upon adoption of this ASU, entities are required to disclose their policy for releasing the income tax effects from AOCI. ASU
2018-02 is effective for annual periods beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. The
amendments in this ASU may be applied retrospectively to each period in which the effect of the Tax Act is recognized or an entity may elect to apply the
amendments in the period of adoption. The Company early adopted this ASU in the first quarter of 2018. The adoption of this ASU did not have a material impact
on the Company's consolidated financial statements.

In May 2017, the FASB issued ASU No. 2017-09, "Compensation—Stock Compensation (Topic 718): Scope of Modification Accounting," which amends the
scope of modification accounting for share-based payment arrangements. Specifically, an entity would not apply modification accounting if the fair value, vesting
conditions, and classification of the awards are the same immediately before and after the modification. This ASU is effective for interim and annual reporting

72

periods beginning after December 15, 2017. The Company adopted this ASU on January 1, 2018. The adoption of this ASU did not have a material impact on the
Company's consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-04, "Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment," which
removes Step 2 of the goodwill impairment test. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value,
not to exceed the carrying amount of goodwill. This ASU is effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption
is permitted, including adoption in an interim period. The Company adopted this ASU on December 31, 2018. The adoption of this ASU did not have a material
impact on the Company's consolidated financial statements.

In January 2017, the FASB issued ASU No. 2017-01, "Business Combinations (Topic 805): Clarifying the Definition of a Business." The amendment seeks to

clarify 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. The definition of a business affects many areas of accounting including acquisitions, disposals, goodwill and
consolidation. This ASU is effective for interim and annual reporting periods beginning after December 15, 2017, including interim periods within those periods.
The amendments should be applied prospectively on or after the effective dates. The Company adopted this ASU on January 1, 2018. The adoption of this ASU did
not have a material impact on the Company's consolidated financial statements.

In January 2016, the FASB issued ASU No. 2016-01, which amends certain aspects of the recognition, measurement, presentation and disclosure of certain
financial instruments, including equity investments and liabilities measured at fair value under the fair value option. The main provisions include a requirement
that all investments in equity securities be measured at fair value through earnings, with certain exceptions, and a requirement to present separately in other
comprehensive income the portion of the total change in fair value attributable to an entity’s own credit risk for financial liabilities where the fair value option has
been elected. The Company adopted this ASU on January 1, 2018. Upon adoption, the Company reclassified approximately $1.1 million of unrealized gain related
to its equity investment security classified as available-for-sale from accumulated other comprehensive income (AOCI) to retained earnings as a cumulative-effect
adjustment, and began recording changes in fair value through earnings.

ASU No. 2014-09, Revenue from Contracts with Customers

In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers in Accounting Standards Codification (ASC) Topic 606 ("ASC
606" or "the New Revenue Standard"), which superseded the revenue recognition requirements in ASC Topic 605, Revenue Recognition (“ASC 605”). The New
Revenue Standard sets forth a single, comprehensive revenue recognition model for all contracts with customers to improve comparability. The New Revenue
Standard requires revenue recognition to depict the transfer of 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 New Revenue Standard can be applied either retrospectively to each prior reporting period
presented (i.e., full retrospective adoption) or with the cumulative effect of initially applying the update recognized at the date of the initial application (i.e.,
modified retrospective adoption) along with additional disclosures.

The Company adopted the New Revenue Standard on January 1, 2018 and all the related amendments using the modified retrospective method. The Company
had previously planned on adopting the New Revenue Standard using the full retrospective method, but ultimately determined to adopt the modified retrospective
method. The Company recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of accumulated
deficit as of January 1, 2018. The comparative information for prior periods has not been recasted and continues to be reported under the accounting standards in
effect for those periods. The Company recognized unbilled receivables (contract assets) of $818 million predominantly due to how revenue is recognized for the
Company's fixed-fee licensing arrangements (as noted in the first bullet point below), deferred revenue (contract liabilities) of $2 million , withholding tax
liabilities of $105 million (and a corresponding deferred tax asset of $105 million , with an offsetting $16 million valuation allowance), and $174 million deferred
tax liability. In the aggregate, these adjustments resulted in a $626 million net credit to accumulated deficit.

The most significant impacts of the New Revenue Standard relate to the following:

•

Revenue recognized for certain patent and technology licensing arrangements has changed under the New Revenue Standard. Revenue for (i) fixed-fee
arrangements (including arrangements that include minimum guaranteed amounts), (ii) variable royalty arrangements that the Company has concluded are
fixed in substance and (iii) the fixed portion of hybrid fixed/variable arrangements is recognized upon control over the underlying IP use right transferring
to the licensee rather than upon billing under ASC 605, net of the effect of significant financing components calculated using customer-specific, risk-
adjusted lending rates and recognized over time on an effective rate basis. As a consequence of

73

•

•

the acceleration of revenue recognition and for matching purposes, all withholding taxes to be paid over the term of these licensing arrangements were
expensed on the date the licensing revenue was recognized.

Adoption of the New Revenue Standard resulted in revenue recognition being accelerated for variable royalties and the variable portion of hybrid
fixed/variable patent and technology licensing arrangements. Under the New Revenue Standard, royalty revenue is being recognized on the basis of
management’s estimates of sales or usage, as applicable, of the licensed IP in the period of reference, with a true-up being recorded in subsequent periods
based on actual sales or usage as reported by licensees (rather than upon receiving royalty reports from licensees as was the case under ASC 605).

Adoption of the New Revenue Standard also resulted in revenue recognition being accelerated for certain professional services arrangements, including
arrangements consisting of significant software customization or modification and development arrangements. Under the New Revenue Standard, such
arrangements are accounted for based on man-days incurred during the reporting period as compared to estimated total man-days necessary for contract
completion, as the customer either controls the asset as it is created or enhanced by us or, where the asset has no alternative use to us, we are entitled to
payment for performance to date and expect to fulfill the contract - revenue recognition is no longer capped to the lesser of inputs in the period or
accepted billable project milestones as was the case under ASC 605.

As part of the adoption of the New Revenue Standard, the Company elected to apply the following practical expedients:

•

•

•

The Company applied the practical expedient whereby the Company primarily charges commission costs to expense when incurred because the
amortization period would be one year or less for the asset that would have been recognized from deferring these costs.

The Company applied the practical expedient which allowed the Company to reflect the aggregate effect of all contract modifications occurring before the
beginning of the earliest period presented when allocating the transaction price to performance obligations.

The Company applied the practical expedient to not assess a contract asset or contract liability for a significant financing component if the period between
the customer's payment and the Company's transfer of goods or services is one year or less.

Adoption of the New Revenue Standard had no impact to cash provided by (used in) operating, financing, or investing activities on the Company's

Consolidated Statements of Cash Flows.

In accordance with the New Revenue Standard requirements, the disclosure of the impact of adoption on the Company's Consolidated Statement of Operations

and Balance Sheet was as follows (in thousands):

(In thousands)

Consolidated Statement of Operations

Revenue:

Royalties

Product revenue

Contract and other revenue

Total revenue

Costs and expenses:

Interest income and other income (expense), net

Provision for income taxes

Net loss

74

Year Ended December 31, 2018

Effect of
Change
Higher/
(Lower)

Amounts
under ASC
605

As Reported  

$

130,452   $

172,769   $

303,221

38,690  

62,059  

707  

(3,576)  

39,397

58,483

$

231,201   $

169,900   $

401,101

$

$

$

16,339   $

(27,235)   $

(10,896)

87,329   $

—   $

87,329

(157,957)   $

142,665   $

(15,292)

 
 
 
   
   
 
   
   
 
 
   
   
 
   
   
(In thousands)

Consolidated Balance Sheet

Assets:

Unbilled receivables

Liabilities:

Deferred revenue

Deferred tax liabilities (included in other long-term liabilities)

Income taxes payable

Stockholders’ equity:

Accumulated deficit

Recent Accounting Pronouncements Not Yet Adopted

December 31, 2018

As Reported

Effect of Change
Higher/ (Lower)

Amounts under ASC
605

$

673,616   $

(673,616)   $

—

19,566  

18,960  

93,670  

(1,243)  

(2,079)  

(90,400)  

18,323

16,881

3,270

(204,294)  

(483,623)  

(687,917)

In August 2018, the FASB issued ASU 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for

Fair Value Measurement." The amendments in this ASU remove certain disclosures, modify certain disclosures and add additional disclosures. This ASU is
effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted. Certain disclosures in ASU 2018-13 would need
to be applied on a retrospective basis and others on a prospective basis. The Company is currently evaluating the impact that this guidance will have on its
consolidated financial statements.

In June 2018, the FASB issued ASU 2018-07, "Compensation - Stock Compensation (Topic 718)," to expand the scope of Topic 718 to include share-based

payment transactions for acquiring goods and services from nonemployees. This ASU is effective for interim and annual reporting periods beginning after
December 15, 2018. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating the impact that this guidance will
have on its consolidated financial statements.

In July 2017, the FASB issued ASU No. 2017-11, "Earnings Per Share (Topic 260), Distinguishing Liabilities from Equity (Topic 480), Derivatives and Hedging
(Topic 815)." The amendments in Part I of this ASU change the classification analysis of certain equity-linked financial instruments (or embedded features) with
down round features. When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no
longer precludes equity classification when assessing whether the instrument is indexed to an entity’s own stock. The amendments also clarify existing disclosure
requirements for equity-classified instruments. As a result, a freestanding equity-linked financial instrument (or embedded conversion option) no longer would be
accounted for as a derivative liability at fair value as a result of the existence of a down round feature. For freestanding equity classified financial instruments, the
amendments require entities that present earnings per share (EPS) in accordance with Topic 260 to recognize the effect of the down round feature when it is
triggered. That effect is treated as a dividend and as a reduction of income available to common stockholders in basic EPS. Convertible instruments with embedded
conversion options that have down round features are now subject to the specialized guidance for contingent beneficial conversion features (in Subtopic 470-20,
Debt-Debt with Conversion and Other Options), including related EPS guidance (in Topic 260). The amendments in Part II of this ASU recharacterize the
indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the FASB codification, to a scope exception. Those amendments
do not have an accounting effect. This ASU is effective for interim and annual reporting periods beginning after December 15, 2018. Early adoption is permitted,
including adoption in an interim period. The Company is currently evaluating the impact that this guidance will have on its consolidated financial statements.

In March 2017, the FASB issued ASU No. 2017-08, "Receivables - Nonrefundable Fees and Other Costs (Topic 310): Premium Amortization on Purchased

Callable Debt Securities," which amends the amortization period for certain purchased callable debt securities held at a premium. This ASU will shorten the
amortization period for the premium to be amortized to

75

 
 
 
 
   
   
 
   
   
 
 
   
   
 
   
   
 
 
   
   
 
   
   
the earliest call date. This ASU does not apply to securities held at a discount, which will continue to be amortized to maturity. This ASU is effective for interim
and annual reporting periods beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. The Company is currently
evaluating the impact that this guidance will have on its consolidated financial statements.

In June 2016, the FASB issued ASU No. 2016-13. The purpose of this ASU is to require a financial asset measured at amortized cost basis to be presented at
the net amount expected to be collected. Credit losses relating to available-for-sale debt securities should be recorded through an allowance for credit losses. This
ASU is effective for interim and annual reporting periods beginning after December 15, 2019. The Company is currently evaluating the impact that this guidance
will have on its financial condition and results of operations.

In February 2016, the FASB issued ASU No. 2016-02, "Leases." This ASU requires lessees to recognize right-of-use assets and liabilities for operating leases,
initially measured at the present value of the lease payments, on the balance sheet. In addition, it requires lessees to recognize a single lease cost, calculated so that
the cost of the lease is allocated over the lease term, generally on a straight-line basis. In July 2018, the FASB issued ASU No. 2018-10, "Codification
Improvements to Topic 842, Leases," and ASU No. 2018-11, "Leases (Topic 842)," which allow the application of the new guidance at the beginning of the year of
adoption, recognizing a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption, in addition to the method of applying
the new guidance retrospectively to each prior reporting period presented. The amendments in ASU No. 2018-10 and ASU No. 2018-11 have the same effective
and transition requirements as ASU 2016-02.

This ASU will become effective for the Company in the first quarter of fiscal year 2019. The Company is evaluating the impact that the new accounting

standard will have on its consolidated financial statements, which will consist primarily of a balance sheet gross up of right-of-use assets and lease liabilities on the
consolidated balance sheets upon adoption, which will increase the Company's total assets and liabilities.

4. Earnings (Loss) Per Share

The following table sets forth the computation of basic and diluted income (loss) per share:

Net income (loss) per share:

Numerator:

Net income (loss)

Denominator:

Weighted-average common shares outstanding - basic

Effect of potential dilutive common shares

Weighted-average common shares outstanding - diluted

Basic net income (loss) per share

Diluted net income (loss) per share

For the Years Ended December 31,

2018

2017

2016

$

(157,957)   $

(22,862)   $

6,820

108,450  

110,198  

—  

—  

108,450  

110,198  

$

$

(1.46)   $

(1.46)   $

(0.21)   $

(0.21)   $

110,162

2,978

113,140

0.06

0.06

For the years ended December 31, 2018 , 2017 and 2016 , options to purchase approximately 1.6 million , 1.5 million and 2.2 million shares, respectively, were
excluded from the calculation because they were anti-dilutive after considering proceeds from exercise, taxes and related unrecognized stock-based compensation
expense. For the years ended December 31, 2018 and 2017 , an additional 2.4 million and 3.7 million shares, respectively, have been excluded from the weighted
average dilutive shares because there was a net loss for the periods. These shares do not include the Company’s 2023 Notes and the 1.125% convertible senior
notes due 2018 (the "2018 Notes"). The par amount of convertible notes is payable in cash equal to the principal amount of the notes plus any accrued and unpaid
interest and then the “in-the-money” conversion benefit feature at the conversion price above $18.93 and $12.07, respectively, per share is payable in cash, shares
of the Company’s common stock or a combination of both. The Company has the option to pay cash, issue shares of common stock or any combination thereof for
the aggregate amount due upon conversion of the notes. The Company’s intent is to settle the principal amount of the notes in cash upon conversion. As a result,
upon conversion of the notes, only the amounts payable in excess of the principal amounts of the notes are considered in diluted earnings per share under the
treasury stock method. Refer to Note 10, "Convertible Notes” for more details.

76

 
 
 
 
 
   
   
 
   
   
 
   
   
Table of Contents

5. Intangible Assets and Goodwill

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

In the fourth quarter of 2018 and 2017, the Company performed its annual goodwill impairment analysis for the MID and RSD reporting units, which are the
only reporting units with goodwill. The Company estimated the fair value of the reporting units using the income approach which was determined using Level 3
fair value inputs. The utilization of the income approach to determine fair value requires estimates of future operating results and cash flows discounted using an
estimated discount rate. Cash flow projections are based on management's estimates of revenue growth rates and operating margins, taking into consideration
industry and market conditions.

As of December 31, 2018, the fair value of the MID reporting unit, with $66.6 million of goodwill, exceeded the carrying value of its net assets by

approximately 17% and the fair value of the RSD reporting unit, with $140.5 million of goodwill, exceeded the carrying value of its net assets by approximately
72% . Key assumptions used to determine the fair value of the MID and RSD reporting units at December 31, 2018, were the revenue growth rates for the forecast
period and terminal year, terminal growth rates and discount rates. Certain estimates used in the income approach involve information for new product lines with
limited financial history and developing revenue models which increase the risk of differences between the projected and actual performance. The discount rate of
16% for MID and 16.5% for RSD is based on the reporting units’ overall risk profile relative to other guideline companies, market adoption of the Company's
technology, the reporting units’ respective industry as well as the visibility of future expected cash flows. The terminal growth rate applied to determine fair value
for both reporting units was 3% , which was based on historical experience as well as anticipated economic conditions, industry data and long term outlook for the
business. These assumptions are inherently uncertain.

As of December 31, 2017, the fair value of the MID reporting unit, with $66.6 million of goodwill, exceeded the carrying value of its net assets by

approximately 270% and the fair value of the RSD reporting unit, with $143.0 million of goodwill, exceeded the carrying value of its net assets by approximately
155% . Key assumptions used to determine the fair value of the MID and RSD reporting units at December 31, 2017, were the revenue growth rates for the forecast
period and terminal year, terminal growth rates and discount rates. Certain estimates used in the income approach involve information for new product lines with
limited financial history and developing revenue models which increase the risk of differences between the projected and actual performance. The discount rate of
12% for MID and 16.5% for RSD is based on the reporting units’ overall risk profile relative to other guideline companies, market adoption of the Company's
technology, the reporting units’ respective industry as well as the visibility of future expected cash flows. The terminal growth rate applied to determine fair value
for both reporting units was 3% , which was based on historical experience as well as anticipated economic conditions, industry data and long term outlook for the
business. These assumptions are inherently uncertain.

It is reasonably possible that the businesses could perform significantly below the Company's expectations or a deterioration of market and economic conditions

could occur. This would adversely impact the Company's ability to meet its projected results, which could cause the goodwill in any of its reporting units or
intangible assets in any of its asset groups to become impaired. Significant differences between these estimates and actual cash flows could materially affect the
Company's future financial results. If the reporting units are not successful in commercializing new business arrangements, if the businesses are unsuccessful in
signing new license agreements or renewing its existing license agreements, or if the Company is unsuccessful in managing its costs, the revenue and income for
these reporting units could adversely and materially deviate from their historical trends and could cause goodwill or intangible assets to become impaired. If the
Company determines that its goodwill or intangible assets are impaired, it would be required to record a non-cash charge that could have a material adverse effect
on its results of operations and financial position.

Goodwill

The following tables present goodwill information for each of the reportable segments for the years ended December 31, 2018 and December 31, 2017 :

Reportable Segment:

MID

RSD

   Total

December 31, 
2017

Impairment Charge
of Goodwill

Effect of
Exchange Rates
(1)

December 31, 
2018

$

$

66,643   $

143,018  

209,661   $

(In thousands)
—   $

—  

—   $

—   $

(2,483)  

(2,483)   $

66,643

140,535

207,178

(1) Effect of exchange rates relates to foreign currency translation adjustments for the period.

77

 
 
 
 
Table of Contents

Reportable Segment:

MID

RSD

Other

   Total

Reportable Segment:

MID

RSD

   Total

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

As of December 31, 2018

Gross Carrying
Amount

Accumulated
Impairment Losses

Net Carrying
Amount

(In thousands)

$

$

66,643   $

140,535  

21,770  

—   $

—  

(21,770)  

66,643

140,535

—

228,948   $

(21,770)   $

207,178

December 31, 
2016

Addition to
Goodwill (1)

Impairment Charge of
Goodwill

Effect of Exchange
Rates (2)

December 31, 
2017

$

$

66,643   $

138,151  

204,794   $

—   $

803  

803   $

—   $

—  

—   $

—   $

4,064  

4,064   $

66,643

143,018

209,661

(1) During the first quarter of 2017, the Company corrected an immaterial error related to an overstatement in prepaids and other current assets that
originated in 2016.

(2) Effect of exchange rates relates to foreign currency translation adjustments for the period.

Reportable Segment:

MID

RSD

Other

   Total

Intangible Assets

As of December 31, 2017

Gross Carrying
Amount

Accumulated
Impairment Losses

Net Carrying
Amount

$

$

66,643   $

143,018  

21,770  

—   $

—  

(21,770)  

66,643

143,018

—

231,431   $

(21,770)   $

209,661

The components of the Company’s intangible assets as of December 31, 2018 and December 31, 2017 were as follows:

Existing technology

Customer contracts and contractual relationships

Non-compete agreements and trademarks

In-process research and development

   Total intangible assets

Useful Life

Gross Carrying
Amount

As of December 31, 2018

Accumulated
Amortization

(In thousands)

Net Carrying
Amount

3 to 10 years

  $

258,903   $

(213,824)   $

1 to 10 years

3 years

Not applicable

67,667  

300  

1,600  

(54,410)  

(300)  

—  

  $

328,470   $

(268,534)   $

45,079

13,257

—

1,600

59,936

78

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Existing technology

Customer contracts and contractual relationships

Non-compete agreements and trademarks

In-process research and development

   Total intangible assets

Useful Life

Gross Carrying
Amount

As of December 31, 2017

Accumulated
Amortization

(In thousands)

Net Carrying
Amount

3 to 10 years

  $

258,008   $

(191,554)   $

1 to 10 years

3 years

Not applicable

68,794  

300  

5,100  

(48,626)  

(300)  

—  

  $

332,202   $

(240,480)   $

66,454

20,168

—

5,100

91,722

Included in customer contracts and contractual relationships are favorable contracts which are acquired software and service agreements where the Company
has no performance obligations. Cash received from these acquired favorable contracts reduce the favorable contract intangible asset. During 2018 and 2017 , the
Company received $1.5 million and $3.6 million related to the favorable contracts, respectively. As of December 31, 2018 and 2017 , the net balance of the
favorable contract intangible assets was $0.9 million and $1.7 million , respectively. The estimated useful life is based on expected payment dates related to the
favorable contracts.

During the years ended December 31, 2018 and 2017, the Company acquired patents related to its memory technology for an immaterial amount.

During the years ended December 31, 2018, 2017 and 2016, the Company did not sell any intangible assets.

Amortization expense for intangible assets for the years ended December 31, 2018 , 2017 , and 2016 was $29.3 million , $42.0 million , and $37.1 million ,

respectively. The estimated future amortization expense of intangible assets as of December 31, 2018 was as follows (amounts in thousands):

Years Ending December 31:
2019

2020

2021

2022

2023

Thereafter

Total amortizable purchased intangible assets

In-process research and development

Total intangible assets

79

Amount

20,177

19,892

12,975

2,047

1,526

1,719

58,336

1,600

59,936

$

$

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

6. Segments and Major Customers

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Operating segments are based upon Rambus' internal organization structure, the manner in which its operations are managed, the criteria used by its Chief

Operating Decision Maker ("CODM") to evaluate segment performance and availability of separate financial information regularly reviewed for resource
allocation and performance assessment.

The Company determined its CODM to be the Chief Executive Officer and determined its operating segments to be: (1) Memory and Interfaces Division
("MID"), which focuses on the design, development, manufacturing through partnerships and licensing of technology and solutions that is related to memory and
interfaces; (2) Rambus Security Division ("RSD"), which focuses on the design, development, deployment and licensing of technologies for chip, system and in-
field application security, anti-counterfeiting, smart ticketing and mobile payments; and (3) Emerging Solutions Division ("ESD"), which includes the Rambus
Labs team and the development efforts in the area of emerging technologies.

On January 30, 2018, the Company announced its plans to close its lighting division ("RLD") including related manufacturing operations in Brecksville,

Ohio. The Company believes that such business was not core to its strategy and growth objectives. As of December 31, 2018, the lighting division has been wound
down. Refer to Note 15, “Restructuring Charges” for additional details.

For the year ended December 31, 2018 , MID and RSD were considered reportable segments as they met the quantitative thresholds for disclosure as reportable

segments. The results of the remaining operating segments are shown under “Other” which includes RLD.

The Company evaluates the performance of its segments based on segment operating income (loss), which is defined as revenue minus segment operating

expenses. Segment operating expenses are comprised of direct operating expenses.

Segment operating expenses do not include sales, general and administrative expenses and the allocation of certain expenses managed at the corporate level,

such as stock-based compensation, amortization, and certain bonus and acquisition costs. The “Reconciling Items” category includes these unallocated sales,
general and administrative expenses as well as corporate level expenses.

The tables below present reported segment operating income (loss) for the years ended December 31, 2018 , 2017 and 2016 :

Revenues

Segment operating expenses

Segment operating income (loss)

Reconciling items

Operating loss

Interest and other income (expense), net

Loss before income taxes

Revenues

Segment operating expense

Segment operating income (loss)

Reconciling items

Operating income

Interest and other income (expense), net

Income before income taxes

For the Year Ended December 31, 2018

MID

RSD

Other

Total

(In thousands)

168,528   $

60,232   $

2,441   $

231,201

94,999  

53,177  

14,560  

162,736

73,529   $

7,055   $

(12,119)   $

68,465

(155,432)

  $

(86,967)

16,339

  $

(70,628)

For the Year Ended December 31, 2017

MID

RSD

Other

Total

(In thousands)

280,704   $

96,663   $

15,729   $

393,096

86,044  

50,010  

33,860  

169,914

194,660   $

46,653   $

(18,131)   $

223,182

$

$

$

$

(168,775)

  $

54,407

(13,418)

  $

40,989

80

 
 
 
 
 
 
 
   
 
 
 
 
   
 
 
 
   
 
 
 
 
   
 
 
 
 
 
 
 
 
 
   
   
 
 
   
 
   
 
 
 
   
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Revenues

Segment operating expenses

Segment operating income (loss)

Reconciling items

Operating income

Interest and other income (expense), net

Income before income taxes

For the Year Ended December 31, 2016

MID

RSD

Other

Total

(In thousands)

$

$

239,843   $

76,175   $

20,579   $

336,597

68,460  

51,855  

30,397  

150,712

171,383   $

24,320   $

(9,818)   $

185,885

(152,243)

  $

33,642

(11,005)

  $

22,637

The Company’s CODM does not review information regarding assets on an operating segment basis. Additionally, the Company does not record intersegment

revenue or expense.

Accounts receivable from the Company's major customers representing 10% or more of total accounts receivable at December 31, 2018 and December 31,

2017, respectively, was as follows:

Customer 
Customer 1 (MID reportable segment)

Customer 2 (Other segment)

Customer 3 (MID reportable segment)

Customer 4 (MID and RSD reportable segment)

Customer 5 (RSD reportable segment)
_________________________________________
*    Customer accounted for less than 10% of total accounts receivable in the period

As of December 31,

2018

2017

12%  

*

39%  

*

*

*

12%

*

13%

11%

Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2018 , 2017 and 2016 were as

follows:

Customer A (MID and RSD reportable segments)

Customer B (MID reportable segment)

Customer C (MID reportable segment)

Customer D (MID reportable segment)

Customer E (MID and RSD reportable segments)

Years Ended December 31,

2018

2017

2016

*

*

*

15%  

11%  

17%  

13%  

13%  

*

*

19%

20%

13%

*

*

Revenue from customers in the geographic regions based on the location of contracting parties is as follows:

USA

Taiwan

South Korea

Japan

Europe

Canada

Singapore

Asia-Other

Total

Years Ended December 31,

2018

2017

2016

$

129,567   $

165,263   $

(In thousands)

21,749  

13,421  

23,222  

15,668  

4,960  

19,140  

3,474  

9,953  

115,811  

23,378  

22,597  

4,373  

22,554  

29,167  

121,209

6,439

129,542

30,215

16,031

3,478

17,908

11,775

$

231,201   $

393,096   $

336,597

81

 
 
 
 
 
 
   
 
 
   
 
 
   
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

At December 31, 2018 , of the $57.0 million of total property, plant and equipment, approximately $50.4 million were located in the United States, $3.8 million
were located in India and $2.8 million were located in other foreign locations. At December 31, 2017 , of the $54.3 million of total property, plant and equipment,
approximately $47.2 million were located in the United States, $3.4 million were located in India and $3.7 million were located in other foreign locations.

7. Marketable Securities

Rambus invests its excess cash and cash equivalents primarily in U.S. government-sponsored obligations, commercial paper, corporate notes and bonds, money

market funds and municipal notes and bonds that mature within three years . As of December 31, 2018 and 2017 , all of the Company’s cash equivalents and
marketable securities have a remaining maturity of less than one year .

All cash equivalents and marketable securities are classified as available-for-sale. Total cash, cash equivalents and marketable securities are summarized as

follows:

Fair Value

  Amortized Cost  

Gross Unrealized
Gains

Gross Unrealized
Losses

Weighted Rate of
Return

As of December 31, 2018

(Dollars in thousands)
Money market funds

U.S. Government bonds and notes

Corporate notes, bonds, commercial paper and other

Total cash equivalents and marketable securities

Cash

$

10,080   $

10,080   $

—   $

32,630  

183,998  

226,708  

51,056  

32,634  

184,095  

226,809  

51,056  

—  

—  

—  

—  

Total cash, cash equivalents and marketable securities

$

277,764   $

277,865   $

—   $

Fair Value

  Amortized Cost  

Gross Unrealized
Gains

Gross Unrealized
Losses

Weighted Rate of
Return

As of December 31, 2017

(Dollars in thousands)
Money market funds

U.S. Government bonds and notes

Corporate notes, bonds, commercial paper and other

Total cash equivalents and marketable securities

Cash

$

10,915   $

10,915   $

—   $

55,220  

195,073  

261,208  

68,168  

55,221  

195,204  

261,340  

68,168  

—  

—  

—  

—  

Total cash, cash equivalents and marketable securities

$

329,376   $

329,508   $

—   $

Available-for-sale securities are reported at fair value on the balance sheets and classified as follows:

Cash equivalents

Short term marketable securities

Total cash equivalents and marketable securities

Cash

Total cash, cash equivalents and marketable securities

As of

December 31, 
2018

December 31, 
2017

$

$

(Dollars in thousands)
64,868   $

161,840  

226,708  

51,056  

277,764   $

157,676

103,532

261,208

68,168

329,376

The Company continues to invest in highly rated quality, highly liquid debt securities. As of December 31, 2018 , these securities have a remaining maturity of

less than one year. The Company holds all of its marketable securities as available-for-sale, marks them to market, and regularly reviews its portfolio to ensure
adherence to its investment policy and to monitor individual investments for risk analysis, proper valuation, and unrealized losses that may be other than
temporary.

82

2.23%

2.28%

2.37%

—  

(4)  

(97)  

(101)    

—    

(101)    

1.16%

1.12%

1.39%

—  

(1)  

(131)  

(132)    

—    

(132)    

 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

The estimated fair value of cash equivalents and marketable securities classified by the length of time that the securities have been in a continuous unrealized

loss position at December 31, 2018 and 2017 are as follows:

Less than one year

U.S. Government bonds and notes

Corporate notes, bonds and commercial paper

Total Corporate notes, bonds, and commercial paper and U.S. Government
bonds and notes

Fair Value

Gross Unrealized Loss

December 31, 
2018

December 31, 
2017

December 31, 
2018

December 31, 
2017

(In thousands)

$

$

32,630   $

42,581   $

183,998  

194,015  

(4)

  $

(97)

216,628   $

236,596   $

(101)

  $

(1)

(131)

(132)

The gross unrealized loss at December 31, 2018 and 2017 was not material in relation to the Company’s total available-for-sale portfolio. The gross unrealized

loss can be primarily attributed to a combination of market conditions as well as the demand for and duration of the U.S. government-sponsored obligations and
corporate notes and bonds. The Company has no intent to sell, there is no requirement to sell and the Company believes that it can recover the amortized cost of
these investments. The Company has found no evidence of impairment due to credit losses in its portfolio. Therefore, these unrealized losses were recorded in
other comprehensive income (loss). However, the Company cannot provide any assurance that its portfolio of cash, cash equivalents and marketable securities will
not be impacted by adverse conditions in the financial markets, which may require the Company in the future to record an impairment charge for credit losses
which could adversely impact its financial results.

See Note 8, “Fair Value of Financial Instruments,” for discussion regarding the fair value of the Company’s cash equivalents and marketable securities.

8. Fair Value of Financial Instruments

The fair value measurement statement defines fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly
transaction between market participants at the measurement date. When determining fair value, the Company considers the principal or most advantageous market
in which the Company would transact, and the Company considers assumptions that market participants would use when pricing the asset or liability, such as
inherent risk, transfer restrictions, and risk of non-performance.

The Company’s financial instruments are measured and recorded at fair value, except for equity method investments and convertible notes. The Company’s
non-financial assets, such as goodwill, intangible assets, and property, plant and equipment, are measured at fair value when there is an indicator of impairment and
recorded at fair value only when an impairment charge is recognized. The Company's equity method investments are initially recognized at cost, and the carrying
amount is increased or decreased to recognize the Company’s share of the profit or loss of the investee after the date of acquisition. The Company’s share of the
investee’s profit or loss is recognized in the Company’s consolidated statements of operations. Distributions received from an investee reduce the carrying amount
of the investment.

Fair Value Hierarchy

The fair value measurement statement requires disclosure that establishes a framework for measuring fair value and expands disclosure about fair value

measurements. The statement requires fair value measurement be classified and disclosed in one of the following three categories:

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.

The Company uses unadjusted quotes to determine fair value. The financial assets in Level 1 include money market funds.

Level 2: Quoted prices in markets that are not active, or inputs which are observable, either directly or indirectly, for substantially the full term of the asset or

liability.

The Company uses observable pricing inputs including benchmark yields, reported trades, and broker/dealer quotes. The financial assets in Level 2 include U.S.

government bonds and notes, corporate notes, commercial paper and municipal bonds and notes.

83

 
 
 
 
 
 
 
 
   
   
   
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e., supported by little or no

market activity).

The financial assets in Level 3 previously included a cost investment whose value is determined using inputs that are both unobservable and significant to the

fair value measurements, as discussed below.

The Company reviews the pricing inputs by obtaining prices from a different source for the same security on a sample of its portfolio. The Company has not
adjusted the pricing inputs it has obtained. The following table presents the financial instruments that are carried at fair value and summarizes the valuation of its
cash equivalents and marketable securities by the above pricing levels as of December 31, 2018 and 2017 :

Money market funds

U.S. Government bonds and notes

Corporate notes, bonds, commercial paper and other

Total available-for-sale securities

Money market funds

U.S. Government bonds and notes

Corporate notes, bonds, commercial paper and other

Total available-for-sale securities

As of December 31, 2018

Quoted Market
Prices in Active
Markets (Level
1)

Significant
Other
Observable
Inputs (Level 2)  

Significant
Unobservable Inputs
(Level 3)

Total

(In thousands)

10,080   $

10,080   $

—   $

32,630  

183,998  

—  

—  

32,630  

183,998  

226,708   $

10,080   $

216,628   $

—

—

—

—

As of December 31, 2017

Quoted Market
Prices in Active
Markets (Level
1)

Significant
Other
Observable
Inputs (Level 2)  

Significant
Unobservable Inputs
(Level 3)

Total

(In thousands)

10,915   $

10,915   $

—   $

55,220  

195,073  

—  

1,058  

55,220  

194,015  

261,208   $

11,973   $

249,235   $

—

—

—

—

$

$

$

$

The Company monitors its investments for other-than-temporary impairment and records appropriate reductions in carrying value when necessary. The
Company monitors its investments for other-than-temporary losses by considering current factors, including the economic environment, market conditions,
operational performance and other specific factors relating to the business underlying the investment, reductions in carrying values when necessary and the
Company’s ability and intent to hold the investment for a period of time which may be sufficient for anticipated recovery in the market. Any other-than-temporary
loss is reported under “Interest and other income (expense), net” in the consolidated statement of operations. During the years ended December 31, 2018 and 2017 ,
the Company recorded no other-than-temporary impairment charges on its investments.

During the second half of 2018, the Company made an investment in a non-marketable equity security of a private company. This equity investment is
accounted for under the equity method of accounting, and the Company accounts for its equity method share of the income (loss) on a quarterly basis. As of
December 31, 2018, the Company's 27.7% ownership percentage amounts to a $3.3 million equity interest in this equity investment and it is included in other
assets on the accompanying consolidated balance sheets. The Company recorded an immaterial amount in its consolidated statements of operations representing its
share of the investee's loss for the year ended December 31, 2018.

During the years ended December 31, 2018 and 2017 , there were no transfers of financial instruments between different categories of fair value.

The following table presents the financial instruments that are not carried at fair value but which require fair value disclosure as of December 31, 2018 and

2017 :

84

 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

As of December 31, 2018

As of December 31, 2017

(in thousands)
1.375% Convertible Senior Notes due 2023

1.125% Convertible Senior Notes due 2018

$

$

Face
Value
172,500   $

  Carrying Value  

141,934   $

Fair
Value
150,075   $

Face
Value
172,500   $

Carrying
Value
135,447   $

Fair
Value
173,450

—   $

—   $

—   $

81,207   $

78,451   $

100,802

The fair value of the convertible notes at each balance sheet date is determined based on recent quoted market prices for these notes which is a level 2

measurement. As discussed in Note 10, “Convertible Notes,” as of December 31, 2018 , the convertible notes are carried at their face value of $172.5 million , less
any unamortized debt discount and unamortized debt issuance costs. The carrying value of other financial instruments, including accounts receivable, accounts
payable and other liabilities, approximates fair value due to their short maturities.

Information regarding the Company's goodwill and long-lived assets balances are disclosed in Note 5, "Intangible Assets and Goodwill".

9. Balance Sheet Details

Inventories

Inventories consist of the following:

Raw materials

Work in process

Finished goods

Property, Plant and Equipment, net

Property, plant and equipment, net is comprised of the following:

Building

Computer software

Computer equipment

Furniture and fixtures

Leasehold improvements

Machinery

Construction in progress

Less accumulated depreciation and amortization

As of December 31,

2018

2017

(In thousands)

$

$

2,583   $

145  

4,044  

6,772   $

2,976

1,109

1,074

5,159

As of December 31,

2018

2017

(In thousands)

$

40,320   $

26,127  

37,223  

16,286  

10,824  

9,097  

429  

140,306  

(83,278)  

$

57,028   $

40,320

18,424

36,607

16,881

10,110

16,936

1,831

141,109

(86,806)

54,303

Depreciation expense for the years ended December 31, 2018 , 2017 and 2016 was $10.7 million , $13.3 million and $13.0 million , respectively.

85

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Accumulated Other Comprehensive Gain (Loss)

Accumulated other comprehensive gain (loss) is comprised of the following:

Foreign currency translation adjustments

Unrealized gain (loss) on available-for-sale securities, net of tax

Total

10. Convertible Notes

The Company’s convertible notes are shown in the following table.

(Dollars in thousands)
1.375% Convertible Senior Notes due 2023

1.125% Convertible Senior Notes due 2018

Total principal amount of convertible notes

Unamortized discount - 2023 Notes

Unamortized discount - 2018 Notes

Unamortized debt issuance costs - 2023 Notes

Unamortized debt issuance costs - 2018 Notes

Total convertible notes

Less current portion

Total long-term convertible notes

$

$

$

As of December 31,

2018

2017

(In thousands)

$

$

(10,040)   $

(251)  

(10,291)   $

(5,593)

496

(5,097)

As of December 31, 2018

  As of December 31, 2017
172,500

172,500   $

—  

172,500  

(28,517)  

—  

(2,049)  

—  

141,934   $

—  

141,934   $

81,207

253,707

(34,506)

(2,547)

(2,547)

(209)

213,898

78,451

135,447

1.375% Convertible Senior Notes due 2023. On November 17, 2017, the Company issued $172.5 million aggregate principal amount of 1.375% convertible

senior notes pursuant to an indenture (the “2023 Indenture”), by and between the Company and U.S. Bank National Association, as trustee (the “Trustee”). In
accounting for the 2023 Notes at issuance, the Company separated the 2023 Notes into liability and equity components pursuant to the accounting standards for
convertible debt instruments that may be fully or partially settled in cash upon conversion. As of the date of issuance, the Company determined that the liability
component of the 2023 Notes was $137.3 million and the equity component of the 2023 Notes was $35.2 million . The fair value of the liability component was
estimated using an interest rate for a similar instrument without a conversion feature. The unamortized discount related to the 2023 Notes is being amortized to
interest expense using the effective interest method over approximately five years .

The 2023 Notes bear interest at a rate of 1.375% per year, payable semi-annually on February 1 and August 1 of each year, beginning on August 1, 2018. The

2023 Notes will mature on February 1, 2023, unless earlier repurchased by the Company or converted pursuant to their terms.

The Company incurred transaction costs of approximately $3.3 million related to the issuance of 2023 Notes. In accounting for these costs, the Company
allocated the costs to the liability and equity components in proportion to the allocation of proceeds from the issuance of the 2023 Notes to such components.
Transaction costs allocated to the liability component of $2.6 million are netted against the carrying amount of the liability in the consolidated balance sheet and
are amortized to interest expense using the effective interest method over the term of the 2023 Notes. The transaction costs allocated to the equity component of
$0.7 million were recorded as additional paid-in capital.

The initial conversion rate of the 2023 Notes is 52.8318 shares of the Company's common stock per $1,000 principal amount of 2023 Notes (which is
equivalent to an initial conversion price of approximately $18.93 per share). The conversion rate will be subject to adjustment upon the occurrence of certain
specified events but will not be adjusted for accrued and unpaid interest. In addition, upon the occurrence of a make-whole fundamental change (as defined in the
2023 Indenture), the

86

 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Company will, in certain circumstances, increase the conversion rate by a number of additional shares for a holder that elects to convert its 2023 Notes in
connection with such make-whole fundamental change.

Prior to the close of business on the business day immediately preceding November 1, 2022, the 2023 Notes will be convertible only under the following
circumstances: (1) during any calendar quarter commencing after March 31, 2018, and only during such calendar quarter, if the last reported sale price of the
common stock for at least 20 trading days (whether or not consecutive) in a period of 30 consecutive trading days ending on the last trading day of the immediately
preceding calendar quarter is more than 130% of the conversion price on each applicable trading day; (2) during the five business day period after any five
consecutive trading day period in which, for each trading day of that period, the trading price per $1,000 principal amount of 2023 Notes for such trading day was
less than 98% of the product of the last reported sale price of the common stock and the conversion rate on each such trading day; (3) upon the occurrence of
specified distributions to holders of our common stock; or (4) upon the occurrence of specified corporate transactions. On or after November 1, 2022, until the
close of business on the second scheduled trading day immediately preceding the maturity date, holders of the 2023 Notes may convert all or a portion of their
2023 Notes regardless of the foregoing conditions. Upon conversion, the Company will pay cash up to the aggregate principal amount of the 2023 Notes to be
converted and pay or deliver, as the case may be, cash, shares of common stock or a combination of cash and shares of common stock, at the Company’s election,
in respect of the remainder, if any, of its conversion obligation in excess of the aggregate principal amount of the 2023 Notes being converted.

The Company may not redeem the 2023 Notes prior to the maturity date and no sinking fund is provided for the 2023 Notes. Upon the occurrence of a

fundamental change (as defined in the 2023 Indenture) prior to the maturity date, holders may require the Company to repurchase all or a portion of the 2023 Notes
for cash at a price equal to 100% of the principal amount of the 2023 Notes to be repurchased, plus any accrued and unpaid interest to, but excluding, the
fundamental change repurchase date.

The 2023 Notes are the Company’s senior unsecured obligations and will rank senior in right of payment to any of the Company’s indebtedness that is

expressly subordinated in right of payment to the notes; equal in right of payment with the Company’s existing and future liabilities that are not so subordinated,
including its “2018 Notes”; effectively junior in right of payment to any of the Company’s secured indebtedness to the extent of the value of the assets securing
such indebtedness; and structurally junior to any existing and future indebtedness and other liabilities (including trade payables, but excluding intercompany
obligations and liabilities) and any preferred stock of subsidiaries of the Company.

The following events are considered “events of default” with respect to the 2023 Notes, which may result in the acceleration of the maturity of the 2023 Notes:

(1) the Company defaults in the payment when due of any principal of any of the 2023 Notes at maturity or upon exercise of a repurchase right or otherwise;

(2) the Company defaults in the payment of any interest, including additional interest, if any, on any of the 2023 Notes, when the interest becomes due and

payable, and continuance of such default for a period of 30 days;

(3) failure by the Company to comply with its obligation to convert the 2023 Notes in accordance with the 2023 Indenture upon exercise of a holder’s

conversion right;

(4) failure by the Company to give a fundamental change notice or notice of a specified corporate transaction when due with respect to the Notes;

(5) failure by the Company to comply with any of its other agreements contained in the 2023 Notes or the 2023 Indenture for a period of 60 days after written

notice from the Trustee or the holders of at least 25% in aggregate principal amount of the Notes then outstanding has been received;

(6) failure by the Company to pay when due the principal of, or acceleration of, any indebtedness for money borrowed by the Company or any of its Material

Subsidiaries (as defined in the 2023 Indenture) in excess of $40.0 million principal amount, if such indebtedness is not discharged, or such acceleration is not
annulled, for a period of 30 days after written notice to the Company by the Trustee or to the Company and the Trustee by holders of 25% or more in aggregate
principal amount of the 2023 Notes then outstanding in accordance with the 2023 Indenture; and

87

 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(7) certain events of bankruptcy, insolvency or reorganization of the Company or any of its Material Subsidiaries (as defined in the Indenture).

If such an event of default, other than an event of default described in clause (7) above with respect to the Company, occurs and is continuing, the Trustee by
written notice to the Company, or the holders of at least 25% in aggregate principal amount of the outstanding Notes by notice to the Company and the Trustee,
may, and the Trustee at the request of such holders shall, declare 100% of the principal of and accrued and unpaid interest, if any, on all the Notes then outstanding
to be due and payable. If an event of default described in clause (7) above occurs, 100% of the principal of and accrued and unpaid interest on the Notes then
outstanding will automatically become due and payable.

Note Hedges and Warrants. On November 14, 2017 and November 16, 2017, in connection with the 2023 Notes, the Company entered into privately

negotiated convertible note hedge transactions (the “Convertible Note Hedge Transactions”) with respect to the Company’s common stock, par value $0.001 per
share (the “Common Stock”), with certain bank counterparties (the “Counterparties”). The Company paid an aggregate amount of approximately $33.5 million to
the Counterparties for the Convertible Note Hedge Transactions. The Convertible Note Hedge Transactions cover, subject to anti-dilution adjustments substantially
similar to those in the 2023 Notes, approximately 9.1 million shares of Common Stock, the same number of shares underlying the 2023 Notes, at a strike price that
corresponds to the initial conversion price of the 2023 Notes, and are exercisable upon conversion of the 2023 Notes. The Convertible Note Hedge Transactions
will expire upon the maturity of the 2023 Notes. The Convertible Note Hedge Transactions are intended to reduce the potential economic dilution upon conversion
of the 2023 Notes. The Convertible Note Hedge Transactions are separate transactions and are not part of the terms of the 2023 Notes. Holders of the 2023 Notes
will not have any rights with respect to the Convertible Note Hedge Transactions.

In addition, concurrently with entering into the Convertible Note Hedge Transactions, the Company separately entered into privately negotiated warrant

transactions, whereby the Company sold to the Counterparties warrants (the “Warrants”) to acquire, collectively, subject to anti-dilution adjustments,
approximately 9.1 million shares of the Common Stock at an initial strike price of approximately $23.30 per share, which represents a premium of 60% over the
last reported sale price of the Common Stock of $14.56 on November 14, 2017. The Company received aggregate proceeds of approximately $23.2 million from
the sale of the Warrants to the Counterparties. The Warrants are separate transactions and are not part of the 2023 Notes or Convertible Note Hedge Transactions.
Holders of the 2023 Notes and Convertible Note Hedge Transactions will not have any rights with respect to the Warrants.

The amounts paid and received for the Convertible Note Hedge Transactions and Warrants have been recorded in additional paid-in capital in the consolidated
balance sheets. The fair value of the Convertible Note Hedge Transactions and Warrants are not re-measured through earnings each reporting period. The amounts
paid for the Convertible Note Hedge Transactions are tax deductible expenses, while the proceeds received from the Warrants are not taxable.

Impact to Earnings per Share. The 2023 Notes will have no impact to diluted earnings per share until the average price of our Common Stock exceeds the
conversion price of $18.93 per share because the principal amount of the 2023 Notes is required to be settled in cash upon conversion. Under the treasury stock
method, in periods the Company reports net income, the Company is required to include the effect of additional shares that may be issued under the 2023 Notes
when the price of the Company’s Common Stock exceeds the conversion price. Under this method, the cumulative dilutive effect of the 2023 Notes would be
approximately  9.1 million  shares if the average price of the Company’s Common Stock is $18.93. However, upon conversion, there will be no economic dilution
from the 2023 Notes, as exercise of the Convertible Note Hedge Transactions eliminates any dilution from the 2023 Notes that would have otherwise occurred
when the price of the Company’s Common Stock exceeds the conversion price. The Convertible Note Hedge Transactions are required to be excluded from the
calculation of diluted earnings per share, as they would be anti-dilutive under the treasury stock method.

The warrants will have a dilutive effect when the average share price exceeds the warrant’s strike price of $23.30 per share. However, upon conversion, the

Convertible Note Hedge Transactions would neutralize the dilution from the 2023 Notes so that there would only be dilution from the warrants.

1.125% Convertible Senior Notes due 2018. On August 16, 2013, the Company issued $138.0 million aggregate principal amount of 1.125% convertible senior

notes pursuant to an indenture (the "2018 Indenture") by and between the Company and U.S. Bank, National Association as the trustee. The 2018 Notes matured
on August 15, 2018 (the "Maturity Date"), subject to earlier repurchase or conversion. In accounting for the 2018 Notes at issuance, the Company separated the
2018 Notes into

88

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

liability and equity components pursuant to the accounting standards for convertible debt instruments that may be fully or partially settled in cash upon conversion.
As of the date of issuance, the Company determined that the liability component of the 2018 Notes was $107.7 million and the equity component of the 2018 Notes
was $30.3 million . The fair value of the liability component was estimated using an interest rate for a similar instrument without a conversion feature. The
unamortized discount related to the 2018 Notes was amortized to interest expense using the effective interest method over five years through August 2018.

The Company paid cash interest at an annual rate of 1.125% of the principal amount at issuance, semi-annually in arrears on February 15 and August 15 of each

year, commencing on February 15, 2014. The Company incurred transaction costs of approximately $3.6 million related to the issuance of 2018 Notes. In
accounting for these costs, the Company allocated the costs to the liability and equity components in proportion to the allocation of proceeds from the issuance of
the 2018 Notes to such components. Transaction costs allocated to the liability component of $2.8 million were recorded as deferred offering costs and were
amortized to interest expense using the effective interest method over five years (the expected term of the debt). The transaction costs allocated to the equity
component of $0.8 million were recorded as additional paid-in capital. The 2018 Notes were the Company's general unsecured obligations, ranking equally in right
of payment to all of Rambus’ existing and future senior unsecured indebtedness, including the 2023 Notes, and senior in right of payment to any of the Company’s
future indebtedness that is expressly subordinated to the 2018 Notes.

The 2018 Notes were convertible into shares of the Company’s common stock at an initial conversion rate of 82.8329 shares of common stock per $1,000
principal amount of 2018 Notes, subject to adjustment in certain events. This is equivalent to an initial conversion price of approximately $12.07 per share of
common stock. Holders may have surrendered their 2018 Notes for conversion prior to the close of business day immediately preceding May 15, 2018 only under
the following circumstances: (
1) during any calendar quarter commencing after the calendar quarter ending on December 31, 2013 (and only during such calendar
quarter), if the closing sale price of the common stock for 20 or more trading days (whether or not consecutive) during a period of 30 consecutive trading days
ending on the last trading day of the immediately preceding calendar quarter is more than 130% of the conversion price per share of common stock on the last
trading day of the preceding calendar quarter; (2) during the five business day period after any five consecutive trading day period (the ‘‘measurement period’’) in
which the trading price (as defined below) per $1,000 principal amount of notes for each trading day of the measurement period was less than 98% of the product
of the closing sale price of the Company's common stock and the conversion rate on each such trading day; (3) upon the occurrence of specified distributions to
holders of the Company's common stock; or (4) upon the occurrence of specified corporate events. On or after May 15, 2018 until the close of business on the
second scheduled trading day immediately preceding the Maturity Date, holders may have converted their notes at any time, regardless of the foregoing
circumstances. If a holder elected to convert its 2018 Notes in connection with certain fundamental changes, as that term is defined in the 2018 Indenture, that
occurred prior to the Maturity Date, the Company would have, in certain circumstances, increased the conversion rate for 2018 Notes converted in connection with
such fundamental changes by a specified number of shares of common stock.

Upon conversion of the 2018 Notes, the Company will have paid cash up to the aggregate principal amount of the notes to have been converted and paid or

delivered, as the case may be, cash, shares of the Company's common stock or a combination of cash and shares of the Company's common stock, at the
Company's election, in respect of the remainder, if any, of the Company's conversion obligation in excess of the aggregate principal amount of the notes converted,
as specified in the Indenture.

The Company may not have redeemed the 2018 Notes at its option prior to the Maturity Date, and no sinking fund was provided for the 2018 Notes.

Upon the occurrence of a fundamental change, holders may have required the Company to repurchase for cash all or any portion of their notes at a repurchase
price equal to 100% of the principal amount of the notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase
date.

The following events are considered events of default under the Indenture which may have resulted in the acceleration of the maturity of the 2018 Notes:

(1) default in the payment when due of any principal of any of the notes at maturity, upon redemption or upon exercise of a repurchase right or otherwise;

89

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(2) default in the payment of any interest, including additional interest, if any, on any of the notes, when the interest became due and payable, and continuance

of such default for a period of 30 days;

(3) the Company's failure to deliver cash or cash and shares of the Company's common stock (including any additional shares deliverable as a result of a

conversion in connection with a make-whole fundamental change, as defined in the Indenture) when required by the Indenture;

(4) default in the Company's obligation to provide notice of the occurrence of a fundamental change, make-whole fundamental change or distribution to holders

of the Company's common stock when required by the Indenture;

(5) the Company's failure to comply with any of the Company's other agreements in the notes or the 2018 Indenture (other than those referred to in clauses (1)
through (4) above) for 60 days after the Company's receipt of written notice to the Company of such default from the trustee or to the Company and the trustee of
such default from holders of not less than 25% in aggregate principal amount of the 2018 Notes then outstanding;

(6) the Company's failure to pay when due the principal of, or acceleration of, any indebtedness for money borrowed by the Company or any of the Company's
material subsidiaries in excess of $40 million principal amount, if such indebtedness is not discharged, or such acceleration is not annulled, for a period of 30 days
after written notice thereof is delivered to the Company by the trustee or to the Company and the trustee by the holders of 25% or more in aggregate principal
amount of the notes then outstanding without such failure to pay having been cured or waived, such acceleration having been rescinded or annulled (if applicable)
and such indebtedness not having been paid or discharged; and

(7) certain events of bankruptcy, insolvency or reorganization relating to the Company or any of the Company's material subsidiaries (as defined in the

Indenture).

If an event of default, other than an event of default described in clause (7) above with respect to the Company, occurred and was continuing, either the trustee

or the holders of at least 25% in aggregate principal amount of the notes then outstanding may have declared the principal amount of, and accrued and unpaid
interest, including additional interest, if any, on the notes then outstanding to be immediately due and payable. If an event of default described in clause (7) above
occurred with respect to the Company, the principal amount of and accrued and unpaid interest, including additional interest, if any, on the notes will have
automatically become immediately due and payable.

During the third quarter of 2018, the Company paid upon maturity the remaining $81.2 million in aggregate principal amount of the 2018 Notes. Additionally,
the Company delivered 423,873 shares of the Company's common stock as settlement related to the in-the-money conversion feature of the 2018 Notes at maturity.
The value of the shares delivered was approximately $5.0 million .

During the fourth quarter of 2017, the Company repurchased $56.8 million aggregate principal amount of the 2018 Notes for a price of $72.3 million which
resulted in a loss on extinguishment of debt of $1.1 million and $16.6 million being recorded in stockholders' equity. To determine the impact of the repurchase on
stockholders' equity, the Company first determined the fair value of the liability component of the repurchased 2018 Notes immediately prior to the repurchase.
The Company then reduced the amount paid for the repurchased 2018 Notes by the fair value of the liability component and allocated the remaining amount paid to
the equity component, which resulted in a reduction to stockholders' equity.

Additional paid-in capital at December 31, 2018 and December 31, 2017 includes $111.3 million and $111.3 million , respectively, for each year related to the

equity component of the notes.

As of December 31, 2018 , none of the conversion conditions were met related to the 2023 Notes. Therefore, the classification of the entire equity component

for the 2023 Notes in permanent equity is appropriate as of December 31, 2018 .

Interest expense related to the notes for the years ended December 31, 2018 , 2017 and 2016 was as follows:

90

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

2023 Notes coupon interest at a rate of 1.375%

2023 Notes amortization of discount and debt issuance cost at an additional effective interest rate of 4.9%

2018 Notes coupon interest at a rate of 1.125%

2018 Notes amortization of discount and debt issuance cost at an additional effective interest rate of 5.5%

Total interest expense on convertible notes

Years Ended December 31,

2018

2017

2016

(in thousands)

$

2,372   $

290   $

6,486  

377  

2,756  

768  

1,488  

6,810  

$

11,991   $

9,356   $

—

—

1,553

6,749

8,302

11. Commitments and Contingencies

On December 15, 2009, the Company entered into a lease agreement for approximately 125,000 square feet of office space located at 1050 Enterprise Way in
Sunnyvale, California commencing on July 1, 2010 and expiring on June 30, 2020. The office space is used for the Company’s corporate headquarters, as well as
engineering, sales, marketing and administrative operations and activities. The annual base rent for these leases includes certain rent abatement and increases
annually over the lease term. The Company has two options to extend the lease for a period of 60 months each and a one-time option to terminate the lease after 84
months in exchange for an early termination fee. Pursuant to the terms of the lease, the landlord agreed to reimburse the Company approximately $9.1 million ,
which was received by the year ended December 31, 2011. The Company recognized the reimbursement as an additional imputed financing obligation as such
payment from the landlord is deemed to be an imputed financing obligation. On November 4, 2011, to better plan for future expansion, the Company entered into
an amended lease for its Sunnyvale facility for approximately an additional 31,000 -square-foot space commencing on March 1, 2012 and expiring on June 30,
2020. Additionally, a tenant improvement allowance to be provided by the landlord was approximately $1.7 million . On September 29, 2012, the Company
entered into a second amended Sunnyvale lease to reduce the tenant improvement allowance to approximately $1.5 million . On January 31, 2013, the Company
entered into a third amendment to the Sunnyvale lease to surrender the 31,000 square-foot space from the first amendment back to the landlord and recorded a total
charge of $2.0 million related to the surrender of the amended lease.

On March 8, 2010, the Company entered into a lease agreement for approximately 25,000 square feet of office and manufacturing areas, located in Brecksville,

Ohio. The office area was used for the RLD group’s engineering activities while the manufacturing area is used for the manufacture of prototypes. This lease was
amended on September 29, 2011 to expand the facility to approximately 51,000 total square feet and the amended lease will expire on July 31, 2019. The Company
has an option to extend the lease for a period of 60 months . On January 30, 2018, the Company announced its plans to close its lighting division and
manufacturing operations in Brecksville, Ohio, and began the process to exit the facilities and sell the related equipment. Refer to Note 15, “Restructuring
Charges,” for additional details.

The Company undertook a series of structural improvements to ready the Sunnyvale and Brecksville facilities for its use. Since these improvements were
considered structural in nature and the Company was responsible for any cost overruns, for accounting purposes, the Company was treated in substance as the
owner of each construction project during the construction period. At the completion of each construction, the Company concluded that it retained sufficient
continuing involvement to preclude de-recognition of the building under the FASB authoritative guidance applicable to the sale leasebacks of real estate. As such,
the Company continues to account for the buildings as owned real estate and to record an imputed financing obligation for its obligations to the legal owners.

Monthly lease payments on these facilities are allocated between the land element of the lease (which is accounted for as an operating lease) and the imputed
financing obligation. The imputed financing obligation is amortized using the effective interest method and the interest rate was determined in accordance with the
requirements of sale leaseback accounting. For the years ended December 31, 2018 , 2017 and 2016 , the Company recognized in its Consolidated Statements of
Operations $4.3 million , $4.4 million , and $4.4 million , respectively, of interest expense in connection with the imputed financing obligation on these facilities.
At December 31, 2018 and 2017 , the imputed financing obligation balance in connection with these facilities

91

 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

was $37.6 million and $38.3 million , respectively, which was primarily classified under long-term imputed financing obligation.

As of December 31, 2018 and 2017 , the Company had capitalized $40.3 million in property, plant and equipment based on the estimated fair value of the
portion of the pre-construction shell, construction costs related to the build-out of the facilities and capitalized interest during construction period. At the end of the
initial lease term, should the Company decide not to renew the lease, the Company would reverse the equal amounts of the net book value of the building and the
corresponding imputed financing obligation.

On November 17, 2017, the Company entered into an Indenture with U.S. Bank, National Association, as trustee, relating to the issuance by the Company of

$172.5 million aggregate principal amount of the 2023 Notes. The aggregate principal amount of the 2023 notes as of December 31, 2018 was $172.5 million ,
offset by unamortized debt discount and unamortized debt issuance costs of $28.5 million and $2.0 million , respectively, on the accompanying consolidated
balance sheets. The unamortized discount related to the 2023 Notes is being amortized to interest expense using the effective method over the remaining 4.1 years
until maturity of the 2023 Notes on February 1, 2023. See Note 10, “Convertible Notes,” for additional details.

As of December 31, 2018 , the Company’s material contractual obligations are as follows (in thousands):

Contractual obligations (1)

Imputed financing obligation (2)

Leases and other contractual obligations

Software licenses (3)

Convertible notes

Interest payments related to convertible notes

Total

2019

2020

2021

2022

2023

$

8,081   $

5,677   $

2,404   $

—   $

—   $

20,548  

12,002  

172,500  

10,680  

5,999  

7,510  

—  

2,372  

5,117  

2,995  

—  

2,372  

5,193  

1,497  

—  

2,372  

3,271  

—  

—  

2,372  

—

968

—

172,500

1,192

Total

$

223,811   $

21,558   $

12,888   $

9,062   $

5,643   $

174,660

______________________________________

(1) The above table does not reflect possible payments in connection with uncertain tax benefits of approximately $23.5 million including $21.4 million recorded
as a reduction of long-term deferred tax assets and $2.1 million in long-term income taxes payable, as of December 31, 2018 . As noted below in Note 16,
“Income Taxes,” although it is possible that some of the unrecognized tax benefits could be settled within the next 12 months , the Company cannot
reasonably estimate the outcome at this time.

(2) With respect to the imputed financing obligation, the main components of the difference between the amount reflected in the contractual obligations table and
the amount reflected on the Consolidated Balance Sheets are the interest on the imputed financing obligation and the estimated common area expenses over
the future periods. The amount includes the amended Ohio lease and the amended Sunnyvale lease.

(3) The Company has commitments with various software vendors for agreements generally having terms longer than one year.

Rent expense was approximately $5.2 million , $4.4 million and $3.8 million for the years ended December 31, 2018 , 2017 and 2016 , respectively.

Indemnifications

From time to time, the Company indemnifies certain customers as a necessary means of doing business. Indemnification covers customers for losses suffered or

incurred by them as a result of any patent, copyright, or other intellectual property infringement or any other claim by any third party arising as result of the
applicable agreement with the Company. The Company generally attempts to limit the maximum amount of indemnification that the Company could be required to
make under these agreements to the amount of fees received by the Company, however, this is not always possible.

12. Equity Incentive Plans and Stock-Based Compensation

Stock Option Plans

92

 
 
 
 
 
 
 
   
   
   
   
   
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

The Company has two stock option plans under which grants are currently outstanding: the 2006 Equity Incentive Plan (the “2006 Plan”) and the 2015 Equity
Incentive Plan (the “2015 Plan”). On April 23, 2015, the Company's stockholders approved the 2015 Plan, which authorizes 4,000,000 shares for future issuance
plus the number of shares that remained available for grant under the 2006 Plan as of the effective date of the 2015 Plan. The 2015 Plan became effective and
replaced the 2006 Plan on April 23, 2015. Additionally, on April 26, 2018, the Company's stockholders approved an additional 5,500,000 shares for issuance under
the 2015 Plan. The 2015 Plan was the Company’s only plan for providing stock-based incentive awards to eligible employees, executive officers, non-employee
directors and consultants as of December 31, 2018 . Grants under all plans typically have a requisite service period of 60 months or 48 months , have straight-line
vesting schedules and expire not more than 10 years from date of grant. No further awards will be made under the 2006 Plan, but the 2006 Plan will continue to
govern awards previously granted under it. In addition, any shares subject to stock options or other awards granted under the 2006 Plan that on or after the effective
date of the 2015 Plan are forfeited, cancelled, exchanged or surrendered or terminate under the 2006 Plan will become available for grant under the 2015 Plan. The
Board will periodically review actual share consumption under the 2015 Plan and may make a request for additional shares as needed.

The 2006 Plan was approved by the stockholders in May 2006. The 2006 Plan, as amended, provides for the issuance of the following types of incentive

awards: (i) stock options; (ii) stock appreciation rights; (iii) restricted stock; (iv) restricted stock units; (v) performance shares and performance units; and (vi) other
stock or cash awards. This plan provides for the granting of awards at less than fair market value of the common stock on the date of grant, but such grants would
be counted against the numerical limits of available shares at a ratio of 1.5 to 1.0 . The Board of Directors reserved 8,400,000  shares in March 2006 for issuance
under this plan, subject to stockholder approval.

As of December 31, 2018 , 10,074,046  shares of the 35,400,000  shares approved under the plans remain available for grant. The 2015 Plan is now the

Company’s only plan for providing stock-based incentive compensation to eligible employees, directors and consultants.

A summary of shares available for grant under the Company’s plans is as follows:

Shares available as of December 31, 2015

Stock options granted

Stock options forfeited

Stock options expired under former plans

Nonvested equity stock and stock units granted (1) (2)

Nonvested equity stock and stock units forfeited (1)

Total shares available for grant as of December 31, 2016

Stock options granted

Stock options forfeited

Nonvested equity stock and stock units granted (1) (3)

Nonvested equity stock and stock units forfeited (1)

Total shares available for grant as of December 31, 2017

Increase in shares approved for issuance

Stock options granted

Stock options forfeited

Nonvested equity stock and stock units granted (1) (4)

Nonvested equity stock and stock units forfeited (1)

Total shares available for grant as of December 31, 2018

______________________________________

Shares Available for
Grant

11,173,545

(500,000)

1,081,107

(412,467)

(5,316,675)

1,279,858

7,305,368

(558,426)

1,978,042

(5,007,947)

1,334,110

5,051,147

5,500,000

(711,479)

877,803

(4,993,802)

4,350,377

10,074,046

(1) For purposes of determining the number of shares available for grant under the 2015 Plan against the maximum number of shares authorized, each restricted
stock granted reduces the number of shares available for grant by 1.5  shares and each restricted stock forfeited increases shares available for grant by 1.5
shares.

93

 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

(2) Amount includes 300,003 shares that had been reserved for potential future issuance related to certain performance unit awards discussed under the section

titled "Nonvested Equity Stock and Stock Units" below.

(3) Amount includes 394,853 shares that had been reserved for potential future issuance related to certain performance unit awards discussed under the section

titled "Nonvested Equity Stock and Stock Units" below.

(4) Amount includes 525,965 shares that have been reserved for potential future issuance related to certain performance unit awards discussed under the section

titled "Nonvested Equity Stock and Stock Units" below.

General Stock Option Information

The following table summarizes stock option activity under the stock option plans for the years ended December 31, 2018 , 2017 and 2016 and information

regarding stock options outstanding, exercisable, and vested and expected to vest as of December 31, 2018 .

Outstanding as of December 31, 2015

Options granted

Options exercised

Options forfeited

Outstanding as of December 31, 2016

Options granted

Options exercised

Options forfeited

Outstanding as of December 31, 2017

Options granted

Options exercised

Options forfeited

Outstanding as of December 31, 2018

Vested or expected to vest at December 31, 2018

Options exercisable at December 31, 2018

Options Outstanding

Number of Shares

Weighted Average
Exercise Price per
Share

Weighted
Average
Remaining
Contractual
Term

Aggregate
Intrinsic Value

(Dollars in thousands, except per share amounts)

8,995,017   $

500,000   $

(1,405,077)   $

(1,081,107)   $

7,008,833   $

558,426   $

(1,278,856)   $

(1,978,042)   $

4,310,361   $

711,479   $

(908,146)   $

(877,803)   $

3,235,891   $

3,205,109   $

2,656,079   $

10.01    

12.29    

7.27    

18.98    

9.34    

12.95    

7.34    

10.68    

9.78    

12.84    

6.70    

13.73    

10.25  

10.22  

9.71  

4.01   $

3.97   $

2.98   $

1,675

1,675

1,675

The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value for in-the-money options at December 31, 2018 , based on the $7.67

closing stock price of Rambus’ Common Stock on December 31, 2018 on the NASDAQ Global Select Market, which would have been received by the option
holders had all option holders exercised their options as of that date. The total number of in-the-money options outstanding and exercisable as of December 31,
2018 was 911,788 and 911,788 , respectively.

The following table summarizes the information about stock options outstanding and exercisable as of December 31, 2018 :

94

 
 
   
 
 
 
 
 
   
   
   
   
   
   
   
   
   
   
   
   
Table of Contents

Range of Exercise Prices
$4.13 – $5.39

$5.46 – $5.46

$5.63 – $5.76

$6.83 – $8.73

$8.76 – $8.76

$9.53 – $11.93

$11.93 – $12.31

$12.46 – $12.84

$13.60 – $21.95

$22.72 – $22.72

$4.13 – $22.72

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Options Outstanding

Weighted Average
Remaining
Contractual Life (in
years)

Number
Outstanding

Options Exercisable

Weighted Average
Exercise Price

  Number Exercisable  

Weighted Average
Exercise Price

53,584  

362,014  

324,773  

275,875  

540,878  

325,858  

433,488  

582,596  

274,025  

62,800  

3,235,891  

3.6   $

2.2   $

1.0   $

2.5   $

3.1   $

4.1   $

5.4   $

7.6   $

4.3   $

0.8   $

4.0   $

4.43  

5.46  

5.71  

7.73  

8.76  

11.23  

12.23  

12.80  

16.00  

22.72  

10.25  

53,584   $

362,014   $

324,773   $

275,875   $

540,878   $

319,736   $

289,796   $

215,598   $

211,025   $

62,800   $

2,656,079   $

4.43

5.46

5.71

7.73

8.76

11.23

12.27

12.81

16.71

22.72

9.71

Employee Stock Purchase Plans

During the years ended December 31, 2018 , 2017 , and 2016 , the Company had one employee stock purchase plan, the 2015 Employee Stock Purchase Plan

(“2015 ESPP”).

On April 23, 2015, the Company's stockholders approved the 2015 ESPP which reserves 2,000,000 shares of the Company's common stock for purchase. On

April 26, 2018, the Company's stockholders approved an additional 2,000,000 shares to be reserved for issuance under the 2015 ESPP.

Employees generally will be eligible to participate in the plan if they are employed by Rambus for more than 20 hours  per week and more than five months in a

fiscal year. The 2015 ESPP provides for six month offering periods, with a new offering period commencing on the first trading day on or after May 1 and
November 1 of each year. Under the plans, employees may purchase stock at the lower of 85% of the beginning of the offering period (the enrollment date), or the
end of each offering period (the purchase date). Employees generally may not purchase more than the number of shares having a value greater than $25,000 in any
calendar year, as measured at the purchase date.

The Company issued 541,395  shares at a weighted average price of $9.99 per share during the year ended December 31, 2018 . The Company issued 615,370

 shares at a weighted average price of $10.47 per share during the year ended December 31, 2017 . The Company issued 548,357  shares at a weighted average
price of $9.34 per share during the year ended December 31, 2016 . As of December 31, 2018 , 2,294,878  shares under the ESPP remain available for issuance.

Stock-Based Compensation

Stock Options

During the years ended December 31, 2018 , 2017 and 2016 , Rambus granted 711,479 , 558,426 and 500,000 stock options, respectively, with an estimated

total grant-date fair value of $3.0 million , $2.3 million and $2.3 million , respectively. During the years ended December 31, 2018 , 2017 and 2016 , Rambus
recorded stock-based compensation related to stock options of $1.7 million , $2.8 million and $4.1 million , respectively.

As of December 31, 2018 , there was $3.9 million of total unrecognized compensation cost, net of expected forfeitures, related to unvested stock-based

compensation arrangements granted under the stock option plans. This cost is expected to be recognized over a weighted-average period of 2.8 years . The total fair
value of options vested for the years ended December 31, 2018 , 2017 and 2016 was $12.9 million , $17.3 million and $28.4 million , respectively.

The total intrinsic value of options exercised was $5.4 million , $7.5 million and $8.0 million for the years ended December 31, 2018 , 2017 and 2016 ,
respectively. Intrinsic value is the total value of exercised shares based on the price of the Company’s Common Stock at the time of exercise less the proceeds
received from the employees to exercise the options.

95

 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

During the years ended December 31, 2018 , 2017 and 2016 , proceeds from employee stock option exercises totaled approximately $6.1 million , $9.4 million

and $10.2 million , respectively.

Employee Stock Purchase Plans

During the years ended December 31, 2018 , 2017 and 2016 , Rambus recorded stock-based compensation related to the ESPP of $1.4 million , $1.7 million
and $1.6 million , respectively. As of December 31, 2018 , there was $0.7 million of total unrecognized compensation cost related to stock-based compensation
arrangements granted under the ESPP. That cost is expected to be recognized over four months.

There were no tax benefits realized as a result of employee stock option exercises, stock purchase plan purchases, and vesting of equity stock and stock units for

the years ended December 31, 2018 and December 31, 2016 . Tax benefits realized as a result of employee stock option exercises, stock purchase plan purchases,
and vesting of equity stock and stock units for the year ended December 31, 2017, calculated in accordance with accounting for share-based payments were $1.3
million .

Valuation Assumptions

Rambus estimates the fair value of stock options using the Black-Scholes-Merton model (“BSM”). The BSM model determines the fair value of stock-based

compensation and is affected by Rambus’ stock price on the date of the grant as well as assumptions regarding a number of highly complex and subjective
variables. These variables include expected volatility, expected life of the award, expected dividend rate, and expected risk-free rate of return. The assumptions for
expected volatility and expected life are the two assumptions that significantly affect the grant date fair value. If actual results differ significantly from these
estimates, stock-based compensation expense and Rambus’ results of operations could be materially impacted.

The fair value of stock awards is estimated as of the grant date using the BSM option-pricing model assuming a dividend yield of 0% and the additional

weighted-average assumptions as listed in the following tables:

The following table presents the weighted-average assumptions used to estimate the fair value of stock options granted that contain only service conditions in

the periods presented.

Stock Option Plan

Expected stock price volatility

Risk free interest rate

Expected term (in years)

Weighted-average fair value of stock options granted

Employee Stock Purchase Plan

Expected stock price volatility

Risk free interest rate

Expected term (in years)

Weighted-average fair value of purchase rights granted under the purchase plan

Stock Option Plan for Years Ended December 31,

2018

2017

2016

24%-32%

2.6%-2.8%

5.8

$4.23

24%-32%

1.8%-2.0%

5.3-5.4

$4.09

34%-36%

1.3%-1.7%

5.4-6.1

$4.59

Employee Stock Purchase Plan for Years Ended December 31,

2018

2017

2016

27%-34%

2.05%-2.5%

0.5

$2.59

25%-27%

0.98%-1.3%

0.5

$3.07

31%-33%

0.41%-0.5%

0.5

$2.88

Expected Stock Price Volatility:   Given the volume of market activity in its market traded options, Rambus determined that it would use the implied volatility
of its nearest-to-the-money traded options. The Company believes that the use of implied volatility is more reflective of market conditions and a better indicator of
expected volatility than historical volatility. If there is not sufficient volume in its market traded options, the Company will use an equally weighted blend of
historical and implied volatility.

Risk-free Interest Rate:   Rambus bases the risk-free interest rate used in the BSM valuation method on implied yield currently available on the U.S. Treasury

zero-coupon issues with an equivalent term. Where the expected terms of Rambus’

96

 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

stock-based awards do not correspond with the terms for which interest rates are quoted, Rambus uses an approximation based on rates on the closest term
currently available.

Expected Term:   The expected term of options granted represents the period of time that options granted are expected to be outstanding. The expected term was

determined based on historical experience of similar awards, giving consideration to the contractual terms of the stock-based awards, vesting schedules and
expectations of future employee behavior. The expected term of ESPP grants is based upon the length of each respective purchase period.

Nonvested Equity Stock and Stock Units

The Company grants nonvested equity stock units to officers, directors and employees. For the years ended December 31, 2018 , 2017 and 2016 , the Company

granted nonvested equity stock units totaling 2,978,558 , 3,075,396 and 3,344,448 shares, respectively, under the 2015 Plan. These awards have a service
condition, generally a service period of four years , except in the case of grants to directors, for which the service period is one year . The fair value of nonvested
equity stock units at the date of grant was approximately $38.1 million , $40.0 million and $42.9 million , respectively. During the first quarters of 2018, 2017 and
2016, the Company granted performance unit awards to certain Company executive officers with vesting subject to the achievement of certain performance
conditions. The ultimate number of performance units that can be earned can range from 0% to 200% of target depending on performance relative to target over the
applicable period. The shares earned will vest on the third anniversary of the date of grant. The Company's shares available for grant has been reduced to reflect the
shares that could be earned at the maximum target. For the year ended December 31, 2018 , the Company recorded a net reversal of $1.6 million of stock-based
compensation expense related to all outstanding nonvested performance unit awards. The net reversal was primarily due to the termination of the Company's
former chief executive officer during the second quarter of 2018. During the years ended December 31, 2017 and 2016 , the Company recorded $4.4 million and
$2.8 million , respectively, of stock-based compensation expense related to these performance unit awards.

During the third quarter of 2017, the Company granted performance unit awards to a Company executive officer with vesting subject to the achievement of

certain performance and market conditions. The ultimate number of performance units that can be earned can range from 0% to 150% of target depending on
performance relative to target over the applicable period. The shares that will become eligible to vest will be measured over a three-year period ending on
December 31, 2019, unless the performance period is shortened because of a change of control of the Company or a termination of the executive officer’s
employment without cause. The Company's shares available for grant have been reduced to reflect the shares that could be earned at 150% of target. The fair value
of the market condition of these performance units was calculated, on its respective grant date, using a binomial valuation model, which estimates the potential
outcome of reaching the market condition based on simulated future stock prices. The stock-based compensation expense related to these awards will be recorded
over the respective requisite service period of approximately 2.4 years . During the year ended December 31, 2017 , the achievement of the performance condition
for these performance units was considered probable, and as a result, the Company recognized $0.5 million of stock-based compensation expense related to these
performance unit awards. During the year ended December 31, 2018 , the achievement of the performance condition for these performance units was considered
improbable due to the termination of the Company's executive officer as noted above, and as a result, the Company reversed all previously recognized stock-based
compensation expense related to these performance unit awards.

For the years ended December 31, 2018 , 2017 and 2016 , the Company recorded stock-based compensation expense of approximately $18.6 million , $22.9
million and $15.3 million , respectively, related to all outstanding nonvested equity stock grants. Unrecognized stock-based compensation related to all nonvested
equity stock grants, net of an estimate of forfeitures, was approximately $35.3 million at December 31, 2018 . This cost is expected to be recognized over a
weighted average period of 2.3 years .

The following table reflects the activity related to nonvested equity stock and stock units for the three years ended December 31, 2018 :

97

Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Nonvested Equity Stock and Stock Units

Nonvested at December 31, 2015

Granted

Vested

Forfeited

Nonvested at December 31, 2016

Granted

Vested

Forfeited

Nonvested at December 31, 2017

Granted

Vested

Forfeited

Nonvested at December 31, 2018

13. Stockholders’ Equity

Share Repurchase Program

Shares
3,008,118

3,344,448

(789,864)

(699,646)

4,863,056

3,075,396

(1,216,476)

(860,627)

5,861,349

2,978,558

(1,713,930)

(2,266,842)

4,859,135

Weighted-Average
Grant-Date Fair
Value

  $

  $

  $

  $

  $

  $

  $

  $

  $

  $

  $

  $

  $

11.32

12.84

10.98

11.94

12.33

13.02

12.15

12.61

12.68

12.77

12.39

12.97

12.71

On January 21, 2015, the Company's Board approved a new share repurchase program authorizing the repurchase of up to an aggregate of 20.0 million shares.

Share repurchases under the plan may be made through the open market, established plans or privately negotiated transactions in accordance with all applicable
securities laws, rules, and regulations. There is no expiration date applicable to the plan. This new stock repurchase program replaced the previous program
approved by the Board in February 2010 and canceled the remaining shares outstanding as part of the previous authorization.

On March 5, 2018, the Company initiated an accelerated share repurchase program with Citibank N.A. The accelerated share repurchase program is part of the

broader share repurchase program previously authorized by the Company's Board on January 21, 2015. Under the accelerated share repurchase program, the
Company pre-paid to Citibank N.A., the $50.0 million purchase price for its common stock and, in turn, the Company received an initial delivery of approximately
3.1 million shares of its common stock from Citibank N.A., in the first quarter of 2018, which were retired and recorded as a $40.0 million reduction to
stockholders' equity. The remaining $10.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward contract
indexed to the Company's stock. During the second quarter of 2018, the accelerated share repurchase program was completed and the Company received an
additional 0.7 million shares of its common stock as the final settlement of the accelerated share repurchase program. There were no other repurchases of the
Company's common stock during 2018.

On May 1, 2017, the Company initiated an accelerated share repurchase program with Barclays Bank PLC. The accelerated share repurchase program is part of

the broader share repurchase program previously authorized by the Company's Board on January 21, 2015. Under the accelerated share repurchase program, the
Company pre-paid to Barclays Bank PLC, the $50.0 million purchase price for its common stock and, in turn, the Company received an initial delivery of
approximately 3.2 million shares of its common stock from Barclays Bank PLC, in the second quarter of 2017, which were retired and recorded as a $40.0 million
reduction to stockholders' equity. The remaining $10.0 million of the initial payment was recorded as a reduction to stockholders’ equity as an unsettled forward
contract indexed to the Company's stock. The number of shares to be ultimately purchased by the Company was determined based on the volume weighted average
price of the common stock during the terms of the transaction, minus an agreed upon discount between the parties. During the fourth quarter of 2017, the
accelerated share repurchase program was completed and the Company received an additional 0.8 million shares of its common stock as the final settlement of the
accelerated share repurchase program. There were no other repurchases of the Company's common stock during 2017.

On October 26, 2015, the Company initiated an accelerated share repurchase program with Citibank, N.A. The accelerated share repurchase program is part of

the broader share repurchase program previously authorized by the Company's Board on

98

 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

January 21, 2015. Under the accelerated share repurchase program, the Company pre-paid to Citibank, N.A., the $100.0 million purchase price for its common
stock and, in turn, the Company received an initial delivery of approximately 7.8 million shares of its common stock from Citibank, N.A, which were retired and
recorded as a $80.0 million reduction to stockholders' equity. The remaining $20.0 million of the initial payment was recorded as a reduction to stockholders’
equity as an unsettled forward contract indexed to the Company's stock. The number of shares to be ultimately purchased by the Company was determined based
on the volume weighted average price of the common stock during the terms of the transaction, minus an agreed upon discount between the parties. During the
second quarter of 2016, the accelerated share repurchase program was completed and the Company received an additional 0.7 million shares of its common stock
as the final settlement of the accelerated share repurchase program. There were no other repurchases of the Company's common stock during 2016.

As of December 31, 2018 , there remained an outstanding authorization to repurchase approximately 3.6 million shares of the Company’s outstanding common

stock under the current share repurchase program.

The Company records stock repurchases as a reduction to stockholders’ equity. The Company records a portion of the purchase price of the repurchased shares

as an increase to accumulated deficit when the price of the shares repurchased exceeds the average original proceeds per share received from the issuance of
common stock. During the year ended December 31, 2018 , the cumulative price of $37.5 million was recorded as an increase to accumulated deficit.

Convertible Note Hedge Transactions

On November 14, 2017 and November 16, 2017, in connection with the 2023 Notes, the Company entered into the Convertible Note Hedge Transactions with

respect to the Common Stock, with the Counterparties. The Company paid an aggregate amount of approximately $33.5 million to the Counterparties for the
Convertible Note Hedge Transactions. The Convertible Note Hedge Transactions cover, subject to anti-dilution adjustments substantially similar to those in the
2023 Notes, approximately 9.1 million shares of Common Stock, the same number of shares underlying the 2023 Notes, at a strike price that corresponds to the
initial conversion price of the 2023 Notes, and are exercisable upon conversion of the 2023 Notes. The Convertible Note Hedge Transactions will expire upon the
maturity of the 2023 Notes.

The Convertible Note Hedge Transactions are expected generally to reduce the potential dilution to the Common Stock upon conversion of the 2023 Notes
and/or offset any cash payments the Company is required to make in excess of the principal amount of the converted 2023 Notes, as the case may be, in the event
that the market price per share of the Common Stock, as measured under the terms of the Convertible Note Hedge Transactions, is greater than the strike price of
the Convertible Note Hedge Transactions.

The Convertible Note Hedge Transactions are separate transactions, entered into by the Company with the Counterparties, and are not part of the terms of the
2023 Notes. Holders of the 2023 Notes will not have any rights with respect to the Convertible Note Hedge Transactions. See Note 10, “Convertible Notes,” for
additional details.

Warrant Transactions

On November 14, 2017 and November 16, 2017, in connection with the 2023 Notes, the Company sold the Warrants to the Counterparties to acquire,
collectively, subject to anti-dilution adjustments, approximately 9.1 million shares of the Common Stock at an initial strike price of approximately $23.30 per
share, which represents a premium of 60% over the last reported sale price of the Common Stock of $14.56 on November 14, 2017. The Company received
aggregate proceeds of approximately $23.2 million from the sale of the Warrants to the Counterparties. The Warrants were sold in private placements to the
Counterparties pursuant to an exemption from the registration requirements of the Securities Act afforded by Section 4(a)(2) of the Securities Act.

If the market price per share of the Common Stock, as measured under the terms of the Warrants, exceeds the strike price of the Warrants, the Warrants could

have a dilutive effect, unless the Company elects, subject to certain conditions, to settle the Warrants in cash.

The Warrants are separate transactions, entered into by the Company with the Counterparties, and are not part of the terms of the 2023 Notes. Holders of the

2023 Notes will not have any rights with respect to the Warrants. See Note 10, “Convertible Notes,” for additional details.

14. Benefit Plans

99

Rambus has a 401(k) Profit Sharing Plan (the “401(k) Plan”) qualified under Section 401(k) of the Internal Revenue Code of 1986. Each eligible employee may

elect to contribute up to 60% of the employee’s annual compensation to the 401(k) Plan, up to the Internal Revenue Service limit. Rambus, at the discretion of its
Board of Directors, may match employee contributions to the 401(k) Plan. The Company matches 50% of eligible employee’s contribution, up to the first 6% of an
eligible employee’s qualified earnings. For the years ended December 31, 2018 , 2017 and 2016 , Rambus made matching contributions totaling approximately
$2.1 million , $2.3 million and $2.0 million , respectively.

15. Restructuring Charges

The 2018 Plan

On January 30, 2018, the Company announced its plans to close its lighting division and manufacturing operations in Brecksville, Ohio, ("the 2018 Plan"). The
Company believes that such business was not core to its strategy and growth objectives. In connection therewith, the Company has terminated approximately fifty
employees, and began the process to exit the facilities in Ohio and sell the related equipment. The Company expected to record restructuring charges of
approximately $2 million to $5 million related to employee terminations and severance costs and facility related costs. During the year ended December 31, 2018,
the Company recorded a net charge of $2.2 million , primarily related to the reduction in workforce, of which $2.0 million was related to the Other segment and
$0.2 million was related to corporate support functions. The 2018 Plan was substantially completed as of December 31, 2018.

The following table summarizes the 2018 Plan restructuring activities during the year ended December 31, 2018:

Balance at December 31, 2017

Charges

Payments

Non-cash settlements

Balance at December 31, 2018

______________________________________

Employee
Severance
and Related Benefits

Facilities

(In thousands)

Total

  $

  $

—   $

2,234  

(2,227)  

—  

7   $

—  

$

1,208  

(226)  

(670) *

312  

$

—

3,442

(2,453)

(670)

319

*The non-cash charge of $0.7 million is primarily related to the write down of fixed assets and inventory related to the Other segment.

The Company concluded that the closure of its lighting division did not meet the criteria for reporting in discontinued operations in accordance with ASC 360,
"Property, Plant, and Equipment". Consequently, the lighting division's long-lived assets were reclassified as held for sale. As of December 31, 2018, the Company
sold all property, plant and equipment from its lighting division reclassified as held for sale on the consolidated balance sheets of approximately $3.5 million and
recognized a gain on the disposal of the held for sale assets of approximately $1.2 million included in restructuring charges on the consolidated statements of
operations.

During 2017 and 2016, the Company did not initiate any restructuring programs.

100

 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

16. Income Taxes

Income (loss) before taxes consisted of the following:

Domestic

Foreign

The provision for (benefit from) income taxes is comprised of:

Federal:

Current

Deferred

State:

Current

Deferred

Foreign:

Current

Deferred

Years Ended December 31,

2018

2017

(In thousands)

2016

(63,829)   $

(6,799)  

(70,628)   $

46,031   $

(5,042)  

40,989   $

38,211

(15,574)

22,637

Years Ended December 31,

2018

2017

(In thousands)

2016

5,451   $

82,726  

20,661   $

43,678  

333  

522  

1,592  

(3,295)  

87,329   $

495  

(43)  

1,101  

(2,041)  

63,851   $

22,115

(2,198)

884

(271)

1,275

(5,988)

15,817

$

$

$

$

The differences between Rambus’ effective tax rate and the U.S. federal statutory regular tax rate are as follows:

Expense at U.S. federal statutory rate

Expense (benefit) at state statutory rate

Withholding tax

Foreign rate differential

Research and development (“R&D”) credit

Executive compensation

Stock-based compensation

Foreign tax credit

Foreign derived intangible income deduction

Impact of corporate rate change on deferred taxes

Other

Valuation allowance

Years Ended December 31,

2018

2017

2016

21.0 %  

35.0 %  

35.0 %

(1.2)

(7.7)

(0.2)

2.2

(0.1)

(2.8)

7.7

14.8

—  

0.7

(158.0)

(123.6)%  

0.7

50.1

2.8

(3.9)

1.8

14.9

(50.1)

—  

50.6

1.4

52.5

1.8

97.0

4.1

(8.3)

1.5

34.8

(97.0)

—

—

1.0

—

155.8 %  

69.9 %

101

 
 
 
 
 
 
 
 
 
 
 
 
   
   
 
   
   
 
   
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

The components of the net deferred tax assets (liabilities) are as follows:

Deferred tax assets:

Depreciation and amortization

Other timing differences, accruals and reserves

Deferred equity compensation

Net operating loss carryovers

Tax credits

Total gross deferred tax assets

Deferred tax liabilities:

Convertible debt

Deferred revenue

Total gross deferred tax liabilities

Total net deferred tax assets

Valuation allowance

Net deferred tax assets (liabilities)

Reported as:

Non-current deferred tax assets

Non-current deferred tax liabilities

Net deferred tax assets (liabilities)

As of December 31,

2018

2017

(In thousands)

$

13,085   $

8,272  

6,236  

21,259  

253,890  

302,742  

(207)  

(143,182)  

(143,389)  

159,353  

(173,878)  

$

(14,525)   $

10,840

8,766

7,979

16,335

157,051

200,971

(791)

—

(791)

200,180

(50,911)

149,269

As of December 31,

2018

2017

(In thousands)

$

$

4,435   $

(18,960)  

(14,525)   $

159,099

(9,830)

149,269

On December 22, 2017, the Tax Act was enacted into law in the United States. The Tax Act, among other things, lowered U.S. corporate income tax rates from

35% to 21%, implemented a territorial tax system, and imposed a one-time transition tax on deemed repatriated earnings of non-U.S. subsidiaries.

The U.S. tax law changes, including limitations on various business deductions such as executive compensation under Internal Revenue Code §162(m), will not

impact the Company’s federal tax expense in the short-term due to the Company’s tax credit carryovers and associated valuation allowance. The Tax Act’s new
international rules, including Global Intangible Low-Taxed Income (“GILTI”), Foreign Derived Intangible Income (“FDII”), and Base Erosion Anti-Avoidance
Tax (“BEAT”) are effective beginning in 2018. The Company has included these effects of the Tax Act in its financial statements.

Regarding the new GILTI tax rules, the Company is required to make an accounting policy election to either treat taxes due on future GILTI inclusions in U.S.
taxable income as a current period expense when incurred or reflect such portion of the future GILTI inclusions in U.S. taxable income that relate to existing basis
differences in the Company's current measurement of deferred taxes. The Company has made a policy election to treat GILTI taxes as a current period expense.

Pursuant to SEC Staff Accounting Bulletin (“SAB”) 118 (regarding the application of ASC 740, Income Taxes (“ASC 740”) associated with the enactment of

the Tax Act), the Company believes its accounting under ASC 740 for the provisions of the Tax Act is now complete.

The Company periodically evaluates the realizability of its net deferred tax assets based on all available evidence, both positive and negative. During the third
quarter of 2018, the Company assessed the changes in its underlying facts and circumstances and evaluated the realizability of its existing deferred tax assets based
on all available evidence, both positive and negative, and the weight accorded to each, and concluded a full valuation allowance associated with U.S. federal and
California deferred tax assets was appropriate. The basis for this conclusion was derived primarily from the fact that the Company completed its forecasting
process during the third quarter of 2018. At a domestic level, losses are expected in future periods in part due to the impact of the adoption of ASC 606. In
addition, the decrease in the U.S. federal tax rate from 35% to

102

 
 
 
 
 
   
 
   
 
 
 
 
 
   
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

21% as a result of U.S. tax reform has further reduced the Company's ability to utilize its deferred tax assets. In light of the above factors, the Company concluded
that it is not more likely than not that it can realize its U.S. deferred tax assets. As such, the Company has set up and maintains a full valuation allowance against its
U.S. federal deferred tax assets.

The following table presents the tax valuation allowance information for the years ended December 31, 2018 , 2017 and 2016 :

Tax Valuation Allowance

Year ended December 31, 2016

Year ended December 31, 2017

Year ended December 31, 2018

______________________________________

Balance at
Beginning of
Period

Charged
(Credited) to
Operations

Charged to
Other
Account*

Valuation
Allowance
Release

Valuation
Allowance Set
up

Balance at End
of Period

$

$

$

20,717  

23,529  

50,911  

—  

—  

—  

2,812  

5,855  

9,238  

—  

—  

—  

—   $

21,527   $

23,529

50,911

113,729   $

173,878

* Amounts not charged to operations are charged to other comprehensive income or deferred tax assets (liabilities).

As of December 31, 2018 , Rambus had California and other state net operating loss carryforwards of $244.1 million and $124.6 million , respectively. The
California net operating losses will begin to expire in 2020. As of December 31, 2018 , Rambus had federal research and development tax credit carryforwards of
$34.3 million and foreign tax credits of $215.5 million . The federal foreign tax credits and research and development credits will begin to expire in 2020. If not
utilized, approximately $51.3 million of federal foreign tax credits will expire in 2020. As of December 31, 2018 , Rambus had California research and
development tax credit carryforwards of $28.5 million . The California research and development credits carry forward indefinitely.

In the event of a change in ownership, as defined under federal and state tax laws, Rambus' net operating loss and tax credit carryforwards could be subject to

annual limitations. The annual limitations could result in the expiration of the net operating loss and tax credit carryforwards prior to utilization.

As of December 31, 2018 , the Company had $23.5 million of unrecognized tax benefits including $21.4 million recorded as a reduction of long-term deferred
tax assets and $2.1 million recorded in long term income taxes payable. If recognized, $2.1 million would be recorded as an income tax benefit in the consolidated
statements of operations. As of December 31, 2017 , the Company had $22.6 million of unrecognized tax benefits including $20.4 million recorded as a reduction
of long-term deferred tax assets and $2.2 million recorded in long term income taxes payable. If recognized, $2.2 million would be recorded as an income tax
benefit in the consolidated statements of operations. It is reasonably possible that a reduction of $0.2 million of existing unrecognized tax benefits could occur in
the next 12 months .

A reconciliation of the beginning and ending amounts of unrecognized income tax benefits for the years ended December 31, 2018 , 2017 and 2016 is as

follows (amounts in thousands):

Balance at January 1

Tax positions related to current year:

Additions

Tax positions related to prior years:

Additions

Reductions

Settlements

Balance at December 31

Years Ended December 31,

2018

2017

2016

22,652   $

21,925   $

20,836

1,032  

1,083  

1,225

115  

(317)  

—  

16  

(372)  

—  

256

(171)

(221)

23,482   $

22,652   $

21,925

$

$

Rambus recognizes interest and penalties related to uncertain tax positions as a component of the income tax provision (benefit). At December 31, 2018 and

2017 , an immaterial amount of interest and penalties are included in long-term income taxes payable.

103

 
 
 
 
 
 
 
   
   
   
   
   
 
 
 
 
 
   
   
 
   
   
Table of Contents

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Continued)

Rambus files income tax returns for the U.S., California, India, the U.K., the Netherlands and various other state and foreign jurisdictions. The U.S. federal
returns are subject to examination from 2015 and forward. The California returns are subject to examination from 2010 and forward. In addition, any research and
development credit carryforward or net operating loss carryforward generated in prior years and utilized in these or future years may also be subject to
examination. The India returns are subject to examination from fiscal year ending March 2012 and forward. The Company is currently under examination by the
IRS for the 2015 tax year and California for the 2010 and 2011 tax years. The Company’s India subsidiary is under examination by the Indian tax administration
for tax years beginning with 2011, except for 2014, which was assessed in the Company's favor. The Company’s France subsidiary is under examination by the
French tax agency for the 2013 to 2017 tax years. These examinations may result in proposed adjustments to the income taxes as filed during these periods.
Management regularly assesses the likelihood of outcomes resulting from income tax examinations to determine the adequacy of their provision for income taxes
and believes their provision for unrecognized tax benefits is adequate.

Additionally, the Company's future effective tax rates could be adversely affected by earnings being higher than anticipated in countries where the Company
has higher statutory rates or lower than anticipated in countries where it has lower statutory rates, by changes in valuation of its deferred tax assets and liabilities or
by changes in tax laws or interpretations of those laws.

At December 31, 2018 , no other income taxes (state or foreign) have been provided on undistributed earnings of approximately $12.1 million from the

Company’s international subsidiaries since these earnings have been, and under current plans will continue to be, indefinitely reinvested outside the United States.
However, if such earnings were distributed, the Company would incur approximately $1.3 million of foreign withholding taxes and an immaterial amount of U.S.
taxes.

17. Litigation and Asserted Claims

Rambus is not currently a party to any material pending legal proceeding; however, from time to time, Rambus may become involved in legal proceedings or be

subject to claims arising in the ordinary course of its business. Although the results of litigation and claims cannot be predicted with certainty, the Company
currently believes that the final outcome of these ordinary course matters will not have a material adverse effect on our business, operating results, financial
position or cash flows. Regardless of the outcome, litigation can have an adverse impact on the Company because of defense and settlement costs, diversion of
management attention and resources and other factors.

The Company records a contingent liability when it is probable that a loss has been incurred and the amount is reasonably estimable in accordance with

accounting for contingencies.

104

Table of Contents

Supplementary Financial Data

RAMBUS INC.
CONSOLIDATED SUPPLEMENTARY FINANCIAL DATA
Quarterly Statements of Operations
(Unaudited)

Dec. 31,
2018

Sept. 30,
2018

June 30,
2018

March 31,
2018

Dec. 31,
2017

Sept. 30,
2017

June 30,
2017

March 31,
2017

(In thousands, except for per share amounts)

Total revenue (3)

Total operating costs and expenses

Operating income (loss) (3)

Net income (loss) (1) (3)

Net income (loss) per share — basic (3)

Net income (loss) per share — diluted (3)

Shares used in per share calculations — basic (2)

Shares used in per share calculations — diluted (2)

______________________________________

$

$

$

$

$

$

68,563   $
72,763   $

(4,200)

(2,018)

(0.02)

(0.02)
108,826  
108,826  

59,754

78,921
  $ (19,167)
  $ (104,893)
  $
  $

(0.97)

(0.97)

56,458

  $
  $
76,445
  $ (19,987)
  $ (15,357)
  $
  $

(0.14)

(0.14)

107,897

107,897

107,737

107,737

  $
  $
  $
  $
  $
  $

46,426

90,039

(43,613)

(35,689)

(0.33)

(0.33)

109,358

109,358

  $ 101,891   $
86,172   $
  $
  $
15,719   $
  $ (36,168)   $
(0.33)   $
  $
(0.33)   $
  $

109,737  
109,737  

99,134   $
82,124   $
17,010   $
7,695   $
0.07  
0.07  
109,555  
113,119  

94,720   $
86,476   $
8,244   $
2,605   $
0.02   $
0.02   $

110,060  
112,565  

97,351

83,917

13,434

3,006

0.03

0.03

111,464

115,325

(1) The net loss for the quarter ended September 30, 2018 included a $91.3 million impact of an increase in our deferred tax asset valuation allowance. The net
loss for the quarter ended December 31, 2017 included a $21.5 million impact due to the recording of a deferred tax asset valuation allowance and $20.7
million  related  to  re-measurement  of  deferred  tax  assets  as  a  result  of  the  tax  law  changes.  Refer  to  Note  16,  "Income  Taxes"  of  Notes  to  Consolidated
Financial Statements of this Form 10-K.

(2) The quarterly financial information includes the impact of the accelerated share repurchase program as follows: 0.7 million shares in the quarter ended June
30, 2018 and 3.1 million shares repurchased in the quarter ended March 31, 2018 and 0.8 million shares in the quarter ended December 31, 2017 and 3.2
million shares repurchased in the quarter ended June 30, 2017. Refer to Note 13, "Stockholders' Equity" of Notes to Consolidated Financial Statements of this
Form 10-K.

(3) Total revenue, operating loss, net loss and net loss per share for the quarters ended December 31, 2018, September 30, 2018, June 30, 2018 and March 31,
2018 reflect the impact from the adoption of ASC 606. See Note 3, “Recent Accounting Pronouncements,” of Notes to Consolidated Financial Statements of
this Form 10-K for further discussion.

105

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Table of Contents

Exhibit Number

INDEX TO EXHIBITS

Description of Document

3.1(1)   Amended and Restated Certificate of Incorporation of Registrant filed May 29, 1997.

3.2(2)   Certificate of Amendment of Amended and Restated Certificate of Incorporation of Registrant filed June 14, 2000.

3.3(3)   Amended and Restated Bylaws of Registrant dated April 25, 2013.

4.1(4)   Form of Registrant’s Common Stock Certificate.

4.3(5)

Indenture, dated November 17, 2017, between Rambus Inc and U.S. Bank National Association (including form of 1.375% Convertible Senior
Note due 2023).

10.1(6)   Form of Indemnification Agreement entered into by Registrant with each of its directors and executive officers.

10.2(7)*

Form of Change of Control Severance Agreement, Agreement entered into by Registrant with each of its named executive officers other than
its chief executive officer.

10.4(8)*   2006 Equity Incentive Plan, as amended.

10.5(8)*   Forms of agreements under the 2006 Equity Incentive Plan, as amended.

10.6(8)*   2006 Employee Stock Purchase Plan, as amended.

10.7(9)*   2015 Equity Incentive Plan, as amended.

10.8(10)*   Form of Restricted Stock Unit Agreement (2015 Equity Incentive Plan).  

10.9(10)*   Form of Stock Option Agreement (2015 Equity Incentive Plan).

10.10(9)*   2015 Employee Stock Purchase Plan, as amended.

10.11(11)   Triple Net Space Lease, dated as of December 15, 2009, by and between Registrant and MT SPE, LLC.

10.12(12)**

Settlement Agreement, dated January 19, 2010, among Registrant, Samsung Electronics Co., Ltd, Samsung Electronics America, Inc.,
Samsung Semiconductor, Inc. and Samsung Austin Semiconductor, L.P.

10.13(12)**   Semiconductor Patent License Agreement, dated January 19, 2010, between Registrant and Samsung Electronics Co., Ltd.

10.14(13)   First Amendment of Lease, dated November 4, 2011, by and between Registrant and MT SPE, LLC.

10.15(14)   Employment Agreement between the Company and Luc Seraphin, dated as of October 25, 2018.

10.16(14)   Amended and Restated Change of Control Severance Agreement between the Company and Luc Seraphin, dated as of October 25, 2018.

10.17(15)**   Settlement Agreement, dated June 11, 2013, among Registrant, SK hynix and certain SK hynix affiliates.

10.18(16)**   Semiconductor Patent License Agreement, dated June 11, 2013, between Registrant and SK hynix.

10.19(17)**

10.20(17)**

  Settlement Agreement, dated December 9, 2013, between Rambus Inc., Micron Technology, Inc., and certain Micron affiliates.

  Semiconductor Patent License Agreement, dated December 9, 2013, between Rambus, Inc. and Micron Technology, Inc.

10.21(17)**

Amendment to Semiconductor Patent License Agreement, dated December 30, 2013, by and between Rambus Inc. and Samsung Electronics
Co., Ltd.  

10.22(18)**

  Amendment 1 to Semiconductor Patent License Agreement, dated June 17, 2015, by and between Rambus Inc. and SK hynix Inc.

10.23(19)

Asset Purchase Agreement, dated June 29, 2016, by and between Rambus Inc., Bell ID Singapore Ptd Ltd, Inphi Corporation and Inphi
International Pte. Ltd.  

10.24(20)   Offer Letter, dated September 9, 2016, by and between Rambus Inc. and Rahul Mathur.  

10.25(5)   Form of Convertible Note Hedge Confirmation.

10.26(5)   Form of Warrant Confirmation.

12.1(21)   Computation of ratio of earnings to fixed charges.

21.1   Subsidiaries of Registrant.

23.1   Consent of Independent Registered Public Accounting Firm.

24   Power of Attorney (included in signature page).

106

 
 
 
 
 
 
Table of Contents

31.1

31.2

32.1

32.2

Certification of Principal Executive Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as
amended, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Financial Officer, pursuant to Rule 13a-14(a) and Rule 15d-14(a) of the Securities Exchange Act of 1934, as
amended, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

Certification of Principal Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley
Act of 2002.

Certification of Principal Financial Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act
of 2002.

101.INS±   XBRL Instance Document

101.SCH±   XBRL Taxonomy Extension Schema Document

101.CAL±   XBRL Taxonomy Extension Calculation Linkbase Document

101.LAB±   XBRL Taxonomy Extension Label Linkbase Document

101.PRE±   XBRL Taxonomy Extension Presentation Linkbase Document

101.DEF±   XBRL Taxonomy Extension Definition Linkbase Document

______________________________________

107

 
 
 
 
Table of Contents

*

**

±

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

(14)

(15)

(16)

(17)

(18)

(19)

(20)

(21)

  Management contracts or compensation plans or arrangements in which directors or executive officers are eligible to participate.

Confidential treatment has been granted with respect to certain portions of this exhibit. Omitted portions have been filed separately with the
Securities and Exchange Commission.

XBRL (Extensible Business Reporting Language) information is furnished and not filed or a part of a registration statement or prospectus for
purposes of Sections 11 or 12 of the Securities Act of 1933, is deemed not filed for purposes of Section 18 of the Securities Exchange Act of
1934, and otherwise is not subject to liability under these sections.

  Incorporated by reference to the Form 10-K filed on December 15, 1997.

  Incorporated by reference to the Form 10-Q filed on May 4, 2001.

  Incorporated by reference to the Form 8-K filed on April 30, 2013.

  Incorporated by reference to the Form S-1/A (file no. 333-22885) filed on April 24, 1997.

  Incorporated by reference to the Form 8-K filed on November 17, 2017.

  Incorporated by reference to the Form S-1 (file no. 333-22885) filed on March 6, 1997.

  Incorporated by reference to the Form 8-K filed on March 9, 2015.

  Incorporated by reference to the Form 8-K filed on April 30, 2014.

  Incorporated by reference to the Form 8-K filed on April 27, 2018.

  Incorporated by reference to the Form 10-Q filed on July 23, 2015.

  Incorporated by reference to the Form 10-K filed on February 26, 2010.

  Incorporated by reference to the Form 10-Q filed on May 3, 2010.

  Incorporated by reference to the Form 10-K filed on February 24, 2012.

  Incorporated by reference to the Form 8-K filed on October 29, 2018.

  Incorporated by reference to the Form 10-Q/A filed on January 13, 2014.

  Incorporated by reference to the Form 10-Q filed on July 29, 2013.

  Incorporated by reference to the Form 10-K filed on February 21, 2014.

  Incorporated by reference to the Form 10-Q filed on July 23, 2015.

  Incorporated by reference to the Form 10-Q filed on July 22, 2016.

  Incorporated by reference to the Form 8-K filed on September 21, 2016.

  Incorporated by reference to the Form S-3 filed on June 22, 2009.

108

 
 
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf

by the undersigned, thereunto duly authorized.

SIGNATURES

RAMBUS INC.

By:

/s/ RAHUL MATHUR

Rahul Mathur

Senior Vice President, Finance and Chief Financial Officer

Date: February 22, 2019

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Luc Seraphin and Rahul
Mathur as his true and lawful agent, proxy and attorney-in-fact, with full power of substitution and resubstitution, for him and in his name, place and stead, in any
and all capacities, to (i) act on, sign, and file with the Securities and Exchange Commission any and all amendments to this Annual Report on Form 10-K, together
with all schedules and exhibits thereto, (ii) act on, sign, and file such certificates, instruments, agreements and other documents as may be necessary or appropriate
in connection therewith, and (iii) take any and all actions that may be necessary or appropriate to be done, as fully for all intents and purposes as he might or could
do in person, hereby approving, ratifying and confirming all that such agent, proxy and attorney-in-fact or any of his substitutes may lawfully do or cause to be
done by virtue thereof.

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.

109

 
 
 
 
Table of Contents

Signature

Title

Date

/s/ LUC SERAPHIN

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

February 22, 2019

Luc Seraphin

/s/ RAHUL MATHUR

Rahul Mathur

/s/ KEITH JONES

Keith Jones

/s/ ERIC STANG

Eric Stang

/s/ ELLIS THOMAS FISHER

Ellis Thomas Fisher

/s/ EMIKO HIGASHI

Emiko Higashi

/s/ CHARLES KISSNER

Charles Kissner

/s/ DAVID SHRIGLEY

David Shrigley

/s/ SANJAY SARAF

Sanjay Saraf

Senior Vice President, Finance and Chief Financial Officer (Principal Financial
Officer)

February 22, 2019

Vice President, Chief Accounting Officer and Corporate Controller (Principal
Accounting Officer)

February 22, 2019

Chairman of the Board of Directors

February 22, 2019

February 22, 2019

February 22, 2019

February 22, 2019

February 22, 2019

February 22, 2019

Director

Director

Director

Director

Director

110

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
SUBSIDIARIES OF REGISTRANT

Exhibit 21.1

Rambus Canada Inc.
Rambus Delaware LLC    
Rambus International Ltd.
Rambus K.K. (Japan)
Rambus Ltd. (Grand Cayman Islands, BWI)
Rambus Chip Technologies (India) Private Limited
Rambus Korea, Inc. (Korea)
Rambus France
Rambus Global Inc.
Rambus Technology Information (Shanghai) Consulting Co. Ltd.
Cryptography Research, Inc.
Mozaik Multimedia, Inc.
Smart Card Software Ltd.
Bell Identification B.V.
Bell ID, LLC
Bell ID Singapore PTE, Limited
Ecebs Limited
Multefile Limited
Accrington Technologies Limited
Nevis Technologies Limited
Unity Semiconductor Corporation
Rambus ROTW Holding B.V.
Rambus Memory Holding B.V.
Rambus Security Holding B.V.

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-28597, 333-38855, 333-67457, 333-93427, 333-48730,
333-52158, 333-86140, 333-103789, 333-115015, 333-124513, 333-146770, 333-159516, 333-181072, 333-191432, 333-195656, 333-203708 and 333-225186) of
Rambus Inc. of our report dated February 22, 2019 relating to the consolidated financial statements and the effectiveness of internal control over financial
reporting, which appears in this Form 10-K.

Exhibit 23.1

/s/ PricewaterhouseCoopers LLP

San Jose, California
February 22, 2019

Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13A-14(A) AND RULE 15D-14(A)
OF THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Luc Seraphin, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Rambus Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in

Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for
the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision,
to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal

quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely

to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date:

February 22, 2019

By:

/s/ Luc Seraphin

Name:

Luc Seraphin

Title:

Chief Executive Officer and President

 
 
CERTIFICATION PURSUANT TO RULE 13A-14(A) AND RULE 15D-14(A)
OF THE SECURITIES EXCHANGE ACT OF 1934,
AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 31.2

I, Rahul Mathur, certify that:

1.

I have reviewed this Annual Report on Form 10-K of Rambus Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the

statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial

condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in

Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for
the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure
that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities,
particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision,
to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in
accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness

of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal

quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the
registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the

registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely

to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over

financial reporting.

Date:

February 22, 2019

By:

/s/ Rahul Mathur

Name: Rahul Mathur

Title:

Senior Vice President, Finance and Chief Financial Officer

 
 
CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.1

I, Luc Seraphin, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of
Rambus Inc. on Form 10-K for the fiscal year ended December 31, 2018, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange
Act of 1934, as amended, and that information contained in such Annual Report on Form 10-K fairly presents in all material respects the financial condition and
results of operations of Rambus Inc.

Date: February 22, 2019

By:

/s/ Luc Seraphin

Name:

Luc Seraphin

Title:

Chief Executive Officer and President

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 32.2

I, Rahul Mathur, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual Report of
Rambus Inc. on Form 10-K for the fiscal year ended December 31, 2018, fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange
Act of 1934, as amended, and that information contained in such Annual Report on Form 10-K fairly presents in all material respects the financial condition and
results of operations of Rambus Inc.

Date: February 22, 2019

By:

Name:

Title:

/s/ Rahul Mathur

Rahul Mathur

Senior Vice President, Finance and Chief Financial Officer