UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

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

For the fiscal year ended June 29, 2018

OR

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

For the transition period from                  to                 

Commission File No. 001-31560

SEAGATE TECHNOLOGY PUBLIC LIMITED COMPANY

(Exact name of registrant as specified in its charter)

38/39 Fitzwilliam Square

Dublin 2, Ireland

(Address of principal executive offices)

Registrant’s telephone number, including area code: (353) (1) 234-3136

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

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

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.

    YES  ☒    NO  ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934.

    YES  ☐    NO  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the 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  ☒    NO  ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 229.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

    YES  ☒    NO  ☐

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

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

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 13(a) of the Exchange Act.  ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

    YES  ☐    NO  ☒

The aggregate market value of the voting and non-voting ordinary shares held by non-affiliates of the registrant as of December 29, 2017, the last business day of the registrant’s most recently completed second fiscal quarter, was approximately $11.9 billion based upon the closing price reported for such date by the NASDAQ.

The number of outstanding ordinary shares of the registrant as of July 30, 2018 was 287,184,721.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive proxy statement to be filed with the Securities and Exchange Commission pursuant to Regulation 14A relating to the registrant’s Annual General Meeting of Shareholders, to be held on October 30, 2018, will be incorporated by reference in this Form 10-K in response to Items 10, 11, 12, 13 and 14 of Part III. The definitive proxy statement will be filed with the SEC no later than 120 days after the registrant’s fiscal year ended June 29, 2018.

SEAGATE TECHNOLOGY PLC

TABLE OF CONTENTS

PRESENTATION OF FINANCIAL AND OTHER INFORMATION

In this Annual Report on Form 10-K (the “Form 10-K”), unless the context indicates otherwise, as used herein, the terms “we,” “us,” “Seagate,” the “Company” and “our” refer to Seagate Technology public limited company (“plc”), an Irish public limited company, and its subsidiaries. References to “$” are to United States dollars.

We have compiled the market size information in this Form 10-K using statistics and other information obtained from several third-party sources.

Various amounts and percentages used in this Form 10-K have been rounded and, accordingly, they may not total 100%.

Seagate, Seagate Technology, LaCie, Maxtor and the Spiral Logo, are trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks or registered trademarks are the property of their respective owners.

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

Some of the statements and assumptions included in this Annual Report on Form 10-K are forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 or Section 21E of the Securities Exchange Act of 1934, each as amended, including, in particular, statements about our plans, strategies and prospects, demand for our products, shifts in technology, estimates of industry growth, our ability to effectively manage our debt obligations and our cash liquidity position, our restructuring efforts, the sufficiency of our sources of cash to meet our cash needs for the next 12 months, our expectations regarding capital expenditures, the potential impact of trade barriers such as import/export duties and restrictions, tariffs and quotas, and potential corresponding actions by the other countries in which the Company conducts its business, changes in the regulatory regime governing the flow of data across international borders, the impact of the 2017 U.S. Tax Cuts and Jobs Act (the “Tax Act”) on our financial statements and the projected costs savings for the fiscal year ending June 28, 2019. These statements identify prospective information and may include words such as “expects,” “intends,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “projects,” “may,” “will,” or negative of these words, variations of these words and comparable terminology. These forward-looking statements are based on information available to the Company as of the date of this Annual Report on Form 10-K and are based on management’s current views and assumptions. These forward-looking statements are conditioned upon and also involve a number of known and unknown risks, uncertainties and other factors that could cause actual results, performance or events to differ materially from those anticipated by these forward-looking statements. Such risks, uncertainties and other factors may be beyond our control and may pose a risk to our operating and financial condition. Such risks and uncertainties include, but are not limited to:

Seagate Technology public limited company | 2018 Form 10-K | 1

Information concerning risks, uncertainties and other factors that could cause results to differ materially from those projected in such forward-looking statements is also set forth in “Item 1A. Risk Factors” of this Annual Report on Form 10-K, which we encourage you to carefully read. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date on which they were made and we undertake no obligation to update forward-looking statements to reflect new information or future events or circumstances after the date they were made.

Seagate Technology public limited company | 2018 Form 10-K | 2

PART I

We are a leading provider of data storage technology and solutions. Our principal products are hard disk drives, commonly referred to as disk drives, hard drives or HDDs. In addition to HDDs, we produce a broad range of data storage products including solid state drives (“SSDs”), solid state hybrid drives (“SSHDs”) and storage subsystems.

Hard disk drives are devices that store digitally encoded data on rapidly rotating disks with magnetic surfaces. Disk drives continue to be the primary medium of mass data storage due to their performance attributes, high quality and cost effectiveness. Complementing existing data center storage architecture, solid-state storage devices use integrated circuit assemblies as memory to store data, and most SSDs use NAND flash memory. In addition to HDDs and SSDs, SSHDs combine the features of SSDs and HDDs in the same unit, containing a high capacity hard disk drive and a smaller SSD acting as a cache to improve performance of frequently accessed data.

Our HDD products are designed for mission critical and nearline applications in enterprise servers and storage systems; edge compute/client compute applications, where our products are designed primarily for desktop and mobile computing; and edge non-compute/client non-compute applications, where our products are designed for a wide variety of end user devices such as portable external storage systems, surveillance systems, digital video recorders (“DVRs”), network-attached storage (“NAS”) and gaming consoles. Our SSD products mainly include serial attached SCSI (“SAS”) and Non-Volatile Memory Express (“NVMe”) SSDs.

Our cloud systems and solutions portfolio includes modular original equipment manufacturer (“OEM”) storage systems and scale-out storage servers.

Industry Overview

Data Storage Industry

The data storage industry is comprised of companies that manufacture components or subcomponents designed for data storage devices and companies that provide storage solutions, software and services for enterprise cloud, big data, computing platforms and consumer markets. We believe the proliferation and personal creation of media-rich digital content will continue to create increasing consumer demand for higher capacity storage solutions.

Markets

The principal markets served by us include:

Enterprise Storage. We define enterprise storage as dedicated storage area networks and hyperscale cloud storage environments. Enterprise and cloud data centers run solutions which are designed for mission critical, nearline and enterprise serial attached SCSI SSDs applications.

Mission critical applications are defined as those that are vital to the operation of large-scale enterprise workloads, requiring high performance and high reliability storage solutions. We expect the market for mission critical enterprise storage solutions to continue to be driven by enterprises utilizing dedicated storage area networks. Our storage solutions are comprised principally of high performance enterprise class disk drives with sophisticated firmware and communications technologies.

Nearline applications are defined as those which require high capacity and energy efficient storage solutions. We expect such applications, which include storage for cloud computing, content delivery and backup services, will continue to grow and drive demand for solutions designed with these attributes. With the increased requirements for storage capacity and performance driven by the creation and consumption of media-rich digital content, we expect the increased exabyte demand will require further build-out of data centers by cloud service providers (“CSPs”) and other enterprises which utilize high capacity nearline devices.

Enterprise SAS SSDs are designed to deliver superior performance, reliability and enterprise features to meet the demands of I/O-intensive applications, with potential for substantial power savings. NVMe SSDs and add-in cards are designed to optimize enterprise applications with a persistent, high-performance, high-capacity memory design. They also leverage flash and software to accelerate any server virtualized deployment and move any big data to the realm of real time.

Seagate Technology public limited company | 2018 Form 10-K | 3

Edge Compute/Client Compute. We define edge compute/client compute applications as solutions designed for desktop and mobile compute applications ranging from traditional laptops to convertible systems. As storage of digital content in the cloud becomes more prevalent, accessible and affordable, some edge compute/client compute applications rely less on built-in storage, and instead have transitioned to cloud storage and computing solutions along with branded external hard drives.

Edge Non-Compute/Client Non-Compute. We define edge non-compute/client non-compute applications as solutions designed for consumer electronic devices and disk drives used for external storage. Disk drives designed for consumer electronic devices are primarily used in applications such as surveillance systems, DVRs, NAS and gaming consoles that require a higher capacity, low cost-per-gigabyte storage solution. Disk drives for external storage are designed for purposes such as portable external storage, and to augment storage capacity in the consumer’s current desktop, notebook, tablet or mobile phone devices.

Cloud Systems and Solutions. We define cloud systems and solutions as applications that provide solutions to businesses for the purpose of modular systems and scale-out storage solutions. Systems can contain HDDs and SSDs and may offer file management systems, software and compute power.

Participants in the data storage industry include:

Major subcomponent manufacturers. Companies that manufacture components or subcomponents used in data storage devices or solutions include companies that supply spindle motors, heads and media and application specific integrated circuits (“ASICs”).

Storage solutions manufacturers. Companies that transform components into storage products include disk drive manufacturers and semiconductor storage manufacturers which integrate flash memory into storage products such as SSDs.

System integrators. Companies, such as OEMs, that bundle and package storage solutions, distributors that integrate storage hardware and software into end-user applications and CSPs that provide cloud based solutions to businesses for the purpose of scale-out storage solutions and modular systems.

Hyperscale Data Centers. Large hyperscale data center companies which are increasingly designing their own storage subsystems and having them built by contract manufacturers for use inside their own data centers. This trend is reshaping the storage system and subsystem market and driving innovation in system design and changes in the competitive landscape of large storage system vendors.

Storage services. Companies that provide and host services and solutions, which include storage, backup, archiving, recovery and discovery of data.

Demand for Data Storage

The International Data Corporation (“IDC”) forecasted in its 2017 Data Age 2025 study that the global datasphere will grow to 163 zettabytes by 2025. According to IDC, we are fast approaching a new era of the data age, which we expect will have a positive impact on storage demand. We believe that the continued advancement of the cloud, the further development of edge computing, the global proliferation of mobile devices, the evolution of the Internet of Things (“IoT”), the increasing use of video surveillance, the evolution of consumer electronic devices, and the enterprise use of big data analytics are driving the growth of digital content. Factors contributing to the growth of digital content include:

Seagate Technology public limited company | 2018 Form 10-K | 4

As a result of these factors, we anticipate that the nature and volume of content being created will require greater storage, which is more efficiently and economically facilitated by higher capacity storage devices in order to store, manage, distribute, analyze and backup such content. We expect this to support the growth in demand for data storage solutions in developed and emerging economies.

In addition, the economics of storage infrastructure are also evolving with the utilization of public and private hyper-scale storage and open-source solutions reducing the total cost of ownership of storage while increasing the speed and efficiency with which customers can leverage massive computing and storage devices. Accordingly, we expect these trends will continue to create significant demand for data storage solutions going forward.

Demand Trends

We believe that continued growth in digital content requires increasingly higher storage capacity in order to store, aggregate, host, distribute, analyze, manage, protect, backup and use such content. We also believe that as architectures evolve to serve the growing commercial and consumer user base throughout the world, the storage solutions will evolve as well.

We expect increased data creation will lead to the expansion of the need for storage in the form of both HDDs and SSDs. While the advance of solid state technology in many end markets is expected to increase, we believe that in the foreseeable future, cloud, traditional enterprise, client and consumer markets that require high-capacity storage solutions will be best served by hard disk drives due to their ability to deliver the most cost effective, reliable and energy efficient mass storage devices. We also believe that as hard disk drive capacities continue to increase, a focus exclusively on unit demand does not reflect the increase in demand for exabytes. This has resulted in demand for fewer units, but with higher average capacity per drive.

Industry Supply Balance

From time to time, the storage industry has experienced periods of imbalance between supply and demand. To the extent that the storage industry builds or maintains capacity based on expectations of demand that do not materialize, price erosion may become more pronounced. Conversely, during periods where demand exceeds supply, price erosion is generally muted.

Our Business

Disk Drive Technology

The design and manufacturing of disk drives depends on highly advanced technology and manufacturing techniques and therefore requires high levels of research and development spending and capital equipment investments. We design, fabricate and assemble a number of the most important components in our disk drives, including read/write heads and recording media. Our design and manufacturing operations are based on technology platforms that are used to produce various disk drive products that serve multiple data storage applications and markets. Our core technology platforms are focused around the areal density of media and read/write head technologies. This design and manufacturing approach allows us to deliver a portfolio of disk drive products to service a wide range of data storage applications and industries.

Disk drives that we manufacture are commonly differentiated by the following key characteristics:

Seagate Technology public limited company | 2018 Form 10-K | 5

Areal density is measured by storage capacity per square inch on the recording surface of a disk. The storage capacity of a disk drive is determined by the number of disks it contains as well as the areal density capability of these disks. We have been pursuing, and will continue to pursue, a number of technologies to increase areal densities across the entire range of our products for expanding disk drive capacities and reducing the number of disks and heads per drive to further reduce product costs.

Manufacturing

We design and produce our own read/write heads and recording media, which are critical technologies for disk drives. This integrated approach enables us to lower costs and to improve the functionality of components so that they work together efficiently.

We believe that because of our vertical design and manufacturing strategy, we are well suited to take advantage of the opportunities to leverage the close interdependence of components for disk drives. Our manufacturing efficiency and flexibility are critical elements of our integrated business strategy. We continuously seek to improve our manufacturing efficiency and reduce manufacturing costs by:

A vertically integrated model, however, tends to have less flexibility when demand moderates as it exposes us to higher unit costs when capacity utilization is not optimized.

Components and Raw Materials

Disk drives incorporate certain components, including a head disk assembly and a printed circuit board mounted to the head disk assembly, which are sealed inside a rigid base and top cover containing the recording components in a contamination controlled environment. We maintain a highly integrated approach to our business by designing and manufacturing a significant portion of the components we view as critical to our products, such as read/write heads and recording media.

Read/Write Heads. The function of the read/write head is to scan across the disk as it spins, magnetically recording or reading information. The tolerances of read/write heads are extremely demanding and require state-of-the-art equipment and

Seagate Technology public limited company | 2018 Form 10-K | 6

processes. Our read/write heads are manufactured with thin-film and photolithographic processes similar to those used to produce semiconductor integrated circuits, though challenges related to magnetic film properties and topographical structures are unique to the disk drive industry. We perform all primary stages of design and manufacture of read/write heads at our facilities. We use a combination of internally manufactured and externally sourced read/write heads, the mix of which varies based on product mix, technology and our internal capacity levels.

Media. Data is written to or read from the media, or disk, as it rotates at very high speeds past the read/write head. The media is made from non-magnetic substrates, usually an aluminum alloy or glass, and is coated with thin layers of magnetic materials. We use a combination of internally manufactured and externally sourced finished media and aluminum substrates, the mix of which varies based on product mix, technology and our internal capacity levels. We purchase all of our glass substrates from third parties.

Printed Circuit Board Assemblies. The printed circuit board assemblies (“PCBAs”) are comprised of standard and custom ASICs and ancillary electronic control chips. The ASICs control the movement of data to and from the read/write heads and through the internal controller and interface, which communicates with the host computer. The ASICs and control chips form electronic circuitry that delivers instructions to a head positioning mechanism called an actuator to guide the heads to the selected track of a disk where the data is recorded or retrieved. Disk drive manufacturers use one or more industry standard interfaces such as serial advanced technology architecture (“SATA”); small computer system interface (“SCSI”); SAS; or fiber channel to communicate to the host systems. We outsource to third parties the manufacture and assembly of the PCBAs used in our disk drives. We do not manufacture any ASICs, but we participate in their design.

Head Disk Assembly. The head disk assembly consists of one or more disks attached to a spindle assembly powered by a spindle motor that rotates the disks at a high constant speed around a hub. Read/write heads, mounted on an arm assembly, similar in concept to that of a record player, fly extremely close to each disk surface and record data on and retrieve it from concentric tracks in the magnetic layers of the rotating disks. The read/write heads are mounted vertically on an E-shaped assembly (“E-block”) that is actuated by a voice-coil motor to allow the heads to move from track to track. The E-block and the recording media are mounted inside the head disk assembly. We purchase spindle motors from outside vendors and from time to time participate in the design of the motors that go into our products.

Disk Drive Assembly. Following the completion of the head disk assembly, it is mated to the PCBA, and the completed unit goes through extensive defect mapping and machine learning prior to packaging and shipment. Disk drive assembly and machine learning operations occur primarily at our facilities located in China and Thailand. We perform subassembly and component manufacturing operations at our facilities in China, Malaysia, Northern Ireland, Singapore, Thailand and the United States. In addition, third parties manufacture and assemble components for us in various countries worldwide.

Suppliers of Components and Industry Constraints. There are a limited number of independent suppliers of components, such as recording heads and media, available to disk drive manufacturers. Vertically integrated disk drive manufacturers, who manufacture their own components, are less dependent on external component suppliers than less vertically integrated disk drive manufacturers. However, our business has been adversely affected by our suppliers’ capacity constraints in the past and this could occur again.

Commodity and Other Manufacturing Costs. The production of disk drives requires rare earth elements, precious metals, scarce alloys and industrial commodities, which are subject to fluctuations in price and the supply of which has at times been constrained. In addition to increased costs of components and commodities, volatility in fuel costs may also increase our costs related to commodities, manufacturing and freight. As a result, we may increase our use of alternative shipment methods to help offset any increase in freight costs, and will continually review various forms of shipments and routes in order to minimize the exposure to higher freight costs.

Products

We offer a broad range of storage solutions for enterprise, data center, edge compute/client compute and edge non-compute/client non-compute applications. We offer more than one product within each product category and differentiate products on the basis of price, performance, form factor, capacity, interface, power consumption efficiency, security features

Seagate Technology public limited company | 2018 Form 10-K | 7

and other customer integration requirements. Our industry is characterized by continuous and significant advances in technology which contribute to rapid product life cycles. Currently, our product offerings include:

Enterprise Storage

Enterprise Performance HDDs.Our 10,000 and 15,000 RPM Enterprise Performance disk drives feature increased throughput and improved energy efficiency, targeted at high random performance server application needs. Performance 10,000 RPM HDDs ship in storage capacities ranging from 300GB to 2.4TB, and our 15,000 RPM HDDs ship in storage capacities ranging from 146GB to 900GB.

Enterprise Capacity and Archive HDDs.Our Enterprise Capacity disk drives ship in 2.5-inch and 3.5-inch form factors and in storage capacities of up to 14TB that mainly rotate at a speed of 7,200 RPM. These products are designed for bulk data storage and server environments that require high capacity, enterprise reliability, energy efficiency, integrated security, and SATA and SAS interfaces. Our Archive HDDs provide up to 8TB of low-cost storage designed specifically for active archive storage environments in cloud data centers where very low cost and power are paramount.

Enterprise SSDs. Our SAS SSDs are available in capacities up to 7.68TB and feature a 12GB per second interface to deliver the speed and consistency needed for demanding enterprise storage and server applications. We also offer a wide range of NVMe and SATA interface SSDs and add-in cards with capacities up to 7.6TB.

Edge Compute/Client Compute

Desktop HDDs and SSHDs. Our 3.5-inch desktop drives ship in both traditional HDD and SSHD configurations and offer up to 12TB of capacity. Desktop drives are designed for applications such as personal computers and workstations.

Mobile HDDs and SSHDs.Our family of 2.5-inch laptop drives ship in a variety of capacities (up to 5TB) and technologies (HDD and SSHD) to support mobile needs. Used in applications ranging from traditional laptops, convertible systems and external storage, our drives are built to address a range of performance needs and sizes for affordable, high capacity storage.

Edge Non-Compute/Client Non-Compute

Surveillance HDDs. Our surveillance drives are built to support the high-write workload of an always-on, always-recording video surveillance system. These surveillance optimized drives are built to support the growing needs of the surveillance market with support for multiple streams and capacities up to 10TB.

Video HDDs. Our Video HDDs are used in video applications like DVRs and media centers. These disk drives are optimized for video streaming in always-on applications with capacities up to 4TB to support leading-edge digital entertainment.

NAS HDDs. Our NAS drives are built to support the performance and reliability demanded by small and medium businesses, and incorporate interface software with custom-built health management, error recovery controls, power settings and vibration tolerance. Our NAS HDD solutions are available in capacities up to 12TB.

Gaming HDDs. Gaming HDDs are specifically optimized for console gaming usage. These products are designed to enhance gaming experience during game-load and game-play and are available in capacities up to 8TB.

Consumer Solutions. Our external storage solutions are shipped under the Seagate Backup Plus and Expansion product lines, as well as under the LaCie and Maxtor brand names. These product lines are available in capacities up to 120TB. We strive to deliver the best customer experience, by leveraging our core technologies, offering services such as Seagate Recovery Services (data recovery) and partnering with leading brands such as Xbox^®, Adobe^® and DJI™.

Customers

We sell our products to major OEMs, distributors and retailers.

Seagate Technology public limited company | 2018 Form 10-K | 8

The following table summarizes our HDD revenue by channel and by geography:

OEM customers, including cloud service providers, typically enter into master purchase agreements with us. These agreements provide for pricing, volume discounts, order lead times, product support obligations and other terms and conditions including sales programs offered to promote selected products. Deliveries are scheduled only after receipt of purchase orders. In addition, with limited lead-time, customers may defer most purchase orders without significant penalty. Anticipated orders from many of our customers have in the past failed to materialize or OEM delivery schedules have been deferred or altered as a result of changes in their business needs.

Our distributors generally enter into non-exclusive agreements for the resale of our products. They typically furnish us with a non-binding indication of their near-term requirements and product deliveries are generally scheduled accordingly. The agreements and related sales programs typically provide the distributors with limited rights of return and price protection rights. In addition, we offer sales programs to distributors on a quarterly and periodic basis to promote the sale of selected products in the sales channel.

Our retail channel consists of our branded storage products sold to retailers either by us directly or by our distributors. Retail sales made by us or our distributors typically require greater marketing support, sales incentives and price protection periods.

In fiscal year 2018, no customer accounted for more than 10% of consolidated revenue. In fiscal years 2017 and 2016, Dell Inc. accounted for approximately 10% and 12% of consolidated revenue, respectively. See “Item 1A. Risk Factors-Risks Related to Our Business-We may be adversely affected by the loss of, or reduced, delayed or canceled purchases by, one or more of our key customers.”

Competition

We compete primarily with manufacturers of hard drives used in the enterprise, edge compute/client compute and edge non-compute/client non-compute applications and with other companies in the data storage industry that provide SSDs and NVMe add-in technology. Some of the principal factors used by customers to differentiate among data storage solutions manufacturers are storage capacity, product performance, product quality and reliability, price per unit and price per gigabyte, storage/retrieval access times, data transfer rates, form factor, product warranty and support capabilities, supply continuity and flexibility, power consumption, total cost of ownership, and brand. While different markets and customers place varying levels of emphasis on these factors, we believe that our products are competitive with respect to many of these factors in the markets that we currently address.

Principal Competitors. We compete with manufacturers of storage solutions and the principal manufactures in the data storage solution industry include:

Seagate Technology public limited company | 2018 Form 10-K | 9

Price Erosion. Historically, our industry has been characterized by price declines for disk drive products with comparable capacity, performance and feature sets (“like-for-like products”). Price declines for like-for-like products (“price erosion”) tend to be more pronounced during periods of:

Disk drive manufacturers typically attempt to offset price erosion with an improved mix of disk drive products characterized by higher capacity, better performance and additional feature sets and product cost reductions.

We believe the HDD industry experienced modest price erosion in fiscal years 2016, 2017 and 2018.

Product Life Cycles and Changing Technology. Success in our industry has been dependent to a large extent on the ability to balance the introduction and transition of new products with time-to-volume, performance, capacity and quality metrics at a competitive price, level of service and support that our customers expect. Generally, the drive manufacturer that introduces a new product first benefits from improved product mix, favorable profit margins and less pricing pressure until comparable products are introduced. Changing technology also necessitates on-going investments in research and development, which may be difficult to recover due to rapid product life cycles and economic declines. Further, there is a continued need to successfully execute product transitions and new product introductions, as factors such as quality, reliability and manufacturing yields continue to be of significant competitive importance.

Seasonality

The disk drive industry traditionally experiences seasonal variability in demand with higher levels of demand in the second half of the calendar year. This seasonality is driven by consumer spending in the back-to-school season from late summer to fall and the traditional holiday shopping season from fall to winter. Beyond traditional seasonality, variability of sales can be related to IT spending or a reflection of more cyclical demand from CSPs based on the timing of procurement, deployment and market supply and demand balance of other components such as NAND and DRAM.

Research and Development

We are committed to developing new component technologies, products and alternative storage technologies. Our research and development focus is designed to bring new products to market in high volume, with quality attributes that our customers expect, before our competitors. Part of our product development strategy is to leverage a design platform and/or subsystem within product families to serve different market needs. This platform strategy allows for more efficient resource utilization, leverages best design practices, reduces exposure to changes in demand, and allows for achievement of lower costs through purchasing economies. Our advanced technology integration effort focuses disk drive and component research on recording subsystems, including read/write heads and recording media; market-specific product technology; and technology focused towards new business opportunities. The primary purpose of our advanced technology integration effort is to ensure timely availability of mature component technologies for our product development teams as well as to allow us to leverage and coordinate those technologies in the design centers across our products in order to take advantage of opportunities in the marketplace. During fiscal years 2018, 2017 and 2016, we had product development expenses of approximately $1,026 million, $1,232 million and $1,237 million, respectively, which represented 9%, 11% and 11% of our consolidated revenue, respectively.

Seagate Technology public limited company | 2018 Form 10-K | 10

Patents and Licenses

As of June 29, 2018, we had approximately 6,000 U.S. patents and 1,400 patents issued in various foreign jurisdictions as well as approximately 1,000 U.S. and 600 foreign patent applications pending. The number of patents and patent applications will vary at any given time as part of our ongoing patent portfolio management activity. Due to the rapid technological change that characterizes the data storage industry, we believe that, in addition to patent protection, the improvement of existing products, reliance upon trade secrets, protection of unpatented proprietary know-how and development of new products are also important to our business in establishing and maintaining a competitive advantage. Accordingly, we intend to continue our efforts to broadly protect our intellectual property, including obtaining patents, where available, in connection with our research and development program.

The data storage industry is characterized by significant litigation arising from time to time relating to patent and other intellectual property rights. From time to time, we receive claims that our products infringe patents of third parties. Although we have been able to resolve some of those claims or potential claims without a material adverse effect on us, other claims have resulted in adverse decisions or settlements. In addition, other claims are pending, which if resolved unfavorably to us could have a material adverse effect on our business and results of operations. For more information on these claims, see “Item 8. Financial Statements and Supplementary Data—Note 14. Legal, Environmental and Other Contingencies.” The costs of engaging in intellectual property litigation in the past have been, and in the future may be, substantial, irrespective of the merits of the claim or the outcome.

Backlog

In view of industry practice, whereby customers may cancel or defer orders with little or no penalty, we believe backlog for our business is of limited indicative value in estimating future performance and results.

Environmental Matters

Our operations are subject to U.S. and foreign laws and regulations relating to the protection of the environment, including those governing discharges of pollutants into the air and water, the management and disposal of hazardous substances and wastes and the cleanup of contaminated sites. Some of our operations require environmental permits and controls to prevent and reduce air and water pollution, and these permits are subject to modification, renewal and revocation by issuing authorities.

We have established environmental management systems and continually update environmental policies and standard operating procedures for our operations worldwide. We believe that our operations are in material compliance with applicable environmental laws, regulations and permits. We budget for operating and capital costs on an ongoing basis to comply with environmental laws. If additional or more stringent requirements are imposed on us in the future, we could incur additional operating costs and capital expenditures.

Some environmental laws, such as the Comprehensive Environmental Response Compensation and Liability Act of 1980 (as amended, the “Superfund” law) and its state equivalents, can impose liability for the cost of cleanup of contaminated sites upon any of the current or former site owners or operators or upon parties who sent waste to these sites, regardless of whether the owner or operator owned the site at the time of the release of hazardous substances or the lawfulness of the original disposal activity. We have been identified as a responsible or potentially responsible party at several sites. At each of these sites, we have an assigned portion of the financial liability based on the type and amount of hazardous substances disposed of by each party at the site and the number of financially viable parties. We have fulfilled our responsibilities at some of these sites and remain involved in only a few at this time.

While our ultimate costs in connection with these sites are difficult to predict, based on current estimates of cleanup costs and our expected allocation of these costs, we do not expect costs in connection with these sites to be material.

We may be subject to various state, federal and international laws and regulations governing environmental matters, including those restricting the presence of certain substances in electronic products. For example, the European Union (“EU”) has enacted the Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment, which prohibits the use of certain substances, including lead, in certain products, including disk drives and server storage products,

Seagate Technology public limited company | 2018 Form 10-K | 11

put on the market after July 1, 2006. Similar legislation has been or may be enacted in other jurisdictions, including in the United States, Canada, Mexico, Taiwan, China, Japan and others. The European Union REACH Directive (Registration, Evaluation, Authorization, and Restriction of Chemicals, EC 1907/2006) also restricts substances of very high concern (“SVHCs”) in products.

Employees

At June 29, 2018, we employed approximately 43,000 employees and temporary employees worldwide, of which approximately 36,000 were located in our Asian operations. We believe that our future success will depend in part on our ability to attract and retain qualified employees at all levels. We believe that our employee relations are good.

Financial Information

Financial information for our reportable business segment and about geographic areas is set forth in “Item 8. Financial Statements and Supplementary Data-Note 13. Business Segment and Geographic Information.”

Corporate Information

Seagate Technology public limited company is a public limited company organized under the laws of Ireland.

Available Information

Availability of Reports. We are a reporting company under the Securities Exchange Act of 1934, as amended (the “1934 Exchange Act”), and we file reports, proxy statements and other information with the U.S. Securities and Exchange Commission (the “SEC”). The public may read and copy any of our filings at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549 from 10:00 a.m. until 3:00 p.m. EST. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330 or (202) 551-6551. Because we make filings to the SEC electronically, the public may access this information at the SEC’s website: www.sec.gov. This site contains reports, proxies and information statements and other information regarding issuers that file electronically with the SEC.

Website Access. Our website is www.seagate.com. We make available, free of charge at the “Investors” section of our website, our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the 1934 Exchange Act as soon as reasonably practicable after we electronically file such materials with, or furnish them to, the SEC. Reports of beneficial ownership filed pursuant to Section 16(a) of the 1934 Exchange Act are also available on our website.

Investors and others should note that we routinely use the Investors section of our website to announce material information to investors and the marketplace. While not all of the information that the Company posts on its corporate website is of a material nature, some information could be deemed to be material. Accordingly, the Company encourages investors, the media and others interested in the Company to review the information that it shares on www.seagate.com. Information in, or that can be accessed through, our website is not incorporated into this Form 10-K.

Executive Officers

The following sets forth the name, age and position of each of the persons who were serving as executive officers as of August 3, 2018. There are no family relationships among any of our executive officers.

Seagate Technology public limited company | 2018 Form 10-K | 12

William D. Mosley, 51, has served as our CEO since October 2017 and as a member of the Board since July 25, 2017. He was previously our President and Chief Operating Officer from June 2016 to September 2017. He also served as our President, Operations and Technology from October 2013 to June 2016 and our Executive Vice President, Operations from March 2011 until October 2013. Prior to these positions, Dr. Mosley served as Executive Vice President, Sales and Marketing from February 2009 through March 2011; Senior Vice President, Global Disk Storage Operations from 2007 to 2009; and Vice President, Research and Development, Engineering from 2002 to 2007. Dr. Mosley joined Seagate in 1996 as a Senior Engineer with a PhD in solid state physics. From 1996 to 2002, he served in varying roles of increasing responsibility until his promotion to Vice President.

Stephen J. Luczo, 61, has served as our Executive Chairman since October 2017 and Chairman of the Board of Directors since 2002. Prior to his current role, he served two tenures as our CEO from January 2009 to October 2017 and July 1998 to July 2004. Mr. Luczo joined Seagate in October 1993 as Senior Vice President of Corporate Development. In September 1997, he was promoted to President and Chief Operating Officer of Seagate Technology (Seagate Technology plc’s predecessor). Upon his promotion to CEO in July 1998, he joined the Board of Directors as a director of Seagate Technology. After resigning as CEO in July 2004, Mr. Luczo continued to serve as Chairman of the Board of Directors. Prior to joining Seagate in 1993, Mr. Luczo was Senior Managing Director of the Global Technology Group of Bear, Stearns & Co. Inc., an investment banking firm, from February 1992 to October 1993. Mr. Luczo served on the board of directors of Microsoft Corporation from May 2012 to March 2014.

David H. Morton Jr., 46, has served as our Executive Vice President and Chief Financial Officer since 2015 and our Principal Accounting Officer since 2009. He was previously our Senior Vice President, Finance, Treasurer and Principal Accounting Officer from April 2014 to October 2015 and our Vice President, Finance, Treasurer and Principal Accounting Officer from October 2009 to April 2014; Vice President of Finance, Sales and Marketing from March 2009 to October 2009; Vice President of Sales Operations from July 2007 to March 2009; and Vice President of Finance, Storage Markets from October 2006 to July 2007. From 1995 to 2007, he served in varying roles of increasing responsibility until his promotion to Vice President.

James J. Murphy, 59, has served as our Executive Vice President, Worldwide Sales and Marketing since January 2017. From 2003 to 2016, Mr. Murphy was employed by Western Digital Corporation where he served in a variety of executive leadership roles including President of Western Digital Corporation, Executive Vice President of Worldwide Sales & Sales Operations, and Vice President of Asia Pacific sales. Mr. Murphy began his career with IBM in 1984 in the sales organization, where he held a number of sales roles with increasing responsibilities over a seven-year period.

Jeffrey D. Nygaard, 54, has served as our Executive Vice President, Global Operations, since October 2017. Mr. Nygaard also served as our Senior Vice President, Global Operations and Supply Chain from March 2017 to October 2017; Senior Vice President, Recording Head Operations from May 2013 to February 2017; Vice President Slider, HGA, HSA Operations from 2011 to April 2013; Vice President and Country Manager, Thailand and Penang Operations from 2009 to 2011; Vice President and Country Manager, Thailand Operations and Asia Drive Engineering from 2006 to 2009; and Vice President, Product and Process Development from 2004 to 2006. From 1994 to 2006, Mr. Nygaard served in varying roles of increasing responsibilities in engineering at Seagate until his promotion to Vice President. Mr. Nygaard began his career with Raytheon and IBM where he held positions as a design engineer and senior engineer.

Katherine E. Schuelke, 55, has served as our Senior Vice President, Chief Legal Officer and Corporate Secretary since June 2017. She was previously employed by Altera Corporation (“Altera”) from March 1996 through January 2016. At Altera, Ms. Schuelke was the Senior Vice President, General Counsel and Secretary from 2011 through 2016 and Vice President, General Counsel, and Secretary from 2001 to 2011. At Altera, she held other positions of increasing responsibility from 1996 through 2001. Ms. Schuelke began her career at an international law firm.

Seagate Technology public limited company | 2018 Form 10-K | 13

Our industry is highly competitive and our failure to anticipate and respond to technological and market developments could harm our ability to compete.

We operate in markets that are highly competitive and subject to rapid change, and that are significantly affected by new product introductions and technological advancements. Our competitors also may aggressively lower prices as part of a strategy to gain or retain market share and customers. If these practices continue, we may need to continually reduce our prices for existing products to retain our market share, which could adversely affect our results of operations.

Our ability to offset the effect of price erosion through new product introductions at higher average prices may be diminished to the extent competitors introduce products before we introduce similar, competing products. We may also lose market share if we are unable to ramp volume production of new products as quickly as our competitors ramp production of similar competing products. Any significant decline in our market share in any of our principal market applications would adversely affect our results of operations.

Our principal sources of competition include:

We also experience competition from other companies that produce alternative storage technologies such as flash memory, where increasing capacity, decreasing cost, energy efficiency and improvements in performance ruggedness have resulted in competition with our lower capacity, smaller form factor disk drives. This competition has traditionally been in the markets for handheld consumer electronics applications and now it also includes SSDs for tablet, notebook and enterprise compute applications. Some customers for both enterprise and edge compute applications are adopting SSDs as alternatives to hard drives in certain applications. Further adoption of these alternative storage technologies may impact the competitiveness of our product portfolio and reduce our market share and adversely affect our results of operations.

The markets for our data storage system products are also characterized by technological change, which is driven in part by the adoption of new industry standards. These standards provide mechanisms to ensure technology component interoperability can occur and may reduce our capability for differentiation or innovation. If this occurs, our affected products may be considered commodities. This could lower the barriers for entry to our market away from our specialized research and development skills and enable entry for the general-purpose design skills found in some large EMS and CEM companies. Commodity markets are driven by extremely low margins and very aggressive competitive pricing. If our market becomes more commoditized and we fail to deliver innovative value-added alternatives to our customers or if our component manufacturers transfer their business to our competitors, we will have difficulty competing against the larger EMS and CEM companies which could reduce our profit margin or result in a loss of market share, which could significantly harm our financial condition.

We may be unable to effectively plan and make strategic changes in our business which may materially adversely affect our financial and business results. Additionally, even if we are able to make desired strategic changes, we may not achieve the intended benefits of our efforts.

If we fail to predict demand accurately for our products in any quarter or if the market for our products changes, we may not be able to recapture the cost of our investments, which may materially adversely affect our financial results and results of operations.

Our industry operates primarily on quarterly purchasing cycles, with much of the order flow in any given quarter typically coming at the end of that quarter. Our quarterly results are subject to substantial fluctuations and can be difficult to predict. Our

Seagate Technology public limited company | 2018 Form 10-K | 14

manufacturing process requires us to make significant product-specific investments in inventory in each quarter for production in that quarter and future quarters. Since we typically receive the bulk of our orders late in a quarter after we have made our investments, there is a risk that our orders will not be sufficient to allow us to recapture the costs of our investment before the products resulting from that investment have become obsolete. We cannot provide any assurance that we will be able to accurately predict demand in the future.

Our revenues in any quarter are substantially dependent upon customer orders in that quarter. We attempt to project future orders based, in part, on estimates from our key customers. Our customers’ estimated requirements are not always accurate and, therefore, we cannot predict our quarterly revenues with any degree of certainty. In addition, we derive a portion of our revenues in each quarter from a number of relatively large orders. If one or more of our key customers decides to defer a purchase order or delays product acceptance in any given quarter, our revenues for that quarter may be significantly reduced and fall below our expectations.

The difficulty in forecasting demand also increases the difficulty in anticipating our inventory requirements, which may cause us to overproduce or underproduce finished goods. If we do not produce enough finished goods to meet customer requirements, we may be unable to maintain our market share. Additionally, the risk of obsolescence or lower of cost and net realizable value inventory write-offs could increase if we were to carry excess inventory levels for extended periods or due to volatility in the pricing environment. Our uneven sales cycle makes inventory management challenging and future financial results less predictable. We cannot be certain that we will be able to recover the costs associated with increased inventory.

Other factors that may adversely affect our ability to recapture the cost of investments in any given quarter include:

In addition, the demand for edge non-compute/client non-compute products can be even more volatile and unpredictable than the demand for edge compute/client compute products. In some cases, our products manufactured for edge non-compute/client non-compute applications are uniquely configured for a single customer’s application, which creates a risk of unwanted and unsellable inventory if the anticipated volumes are not realized. This potential for unpredictable volatility is increased by the possibility of competing alternative storage technologies, such as flash memory, meeting the customers’ cost and capacity metrics, resulting in a rapid shift in demand from our products and disk drive technology, generally, to alternative storage technologies. Unpredictable fluctuations in demand for our products or rapid shifts in demand from our products to alternative storage technologies in new edge non-compute/client non-compute applications could materially adversely impact

Seagate Technology public limited company | 2018 Form 10-K | 15

our future results of operations. Additionally, we are dependent on our long-term investment to manufacture adequate products. Our investment decisions in adding a new assembly and test capacity require significant planning and lead-time, and a failure to accurately forecast demand for our products could cause us to over-invest or under-invest, which would lead to excess capacity, under-utilization charges, impairments or loss of sales and revenue opportunities.

Market acceptance of new product introductions cannot be accurately predicted, and our results of operations will suffer if there is less demand for our new products than is anticipated.

The markets for our products are characterized by rapid technological change, frequent new product introductions and technology enhancements, uncertain product life cycles and changes in customer demand. The success of our new product introductions is dependent on a number of factors, including market acceptance, our ability to manage the risks associated with product transitions, our ability to effectively manage inventory levels in line with anticipated product demand and the risk that our new products will have quality problems or other defects in the early stages of introduction that were not anticipated in the design of those products. Accordingly, we cannot accurately determine the ultimate effect that our new products will have on our results of operations. Our failure to accurately anticipate customers’ needs and accurately identify the shift in technological changes could materially adversely affect our long-term financial results.

Historically, our results of operations have substantially depended upon our ability to be among the first-to-market with new disk drive product offerings. We may face technological, operational and financial challenges in developing new products. In addition, our investments in new product development may not yield the anticipated benefits. Our market share and results of operations in the future may be adversely affected if we fail to:

In addition, the success of our new product introductions is dependent upon our ability to qualify as a primary source of supply with our OEM customers. In order for our products to be considered by our customers for qualification, we must be among the leaders in time-to-market with those new products. Once a product is accepted, any failure or delay in the qualification process or a requirement that we requalify can result in our losing sales to that customer until new products are introduced. The limited number of high-volume OEMs magnifies the potential effect of missing a product qualification opportunity. These risks are further magnified because we expect competitive pressures to result in declining sales, eroding prices and declining gross margins on our current generation products. If the delivery of our products is delayed, our OEM customers may use our competitors’ products to meet their production requirements. We cannot assure you that we will be among the leaders in time-to-market with new products or that we will be able to successfully qualify new products with our customers in the future.

We face the related risk that consumers and businesses may wait to make their purchases to evaluate new products or if they want to buy a new product that has been announced but not yet released. If this were to occur, we may be unable to sell our existing inventory of products that may be less efficient and cost effective compared to new products. As a result, even if we are among the first-to-market with a given product, subsequent introductions or announcements by our competitors of new products could cause us to lose revenue and not achieve a positive return on our investment in existing products and inventory.

If we cannot successfully deliver competitive products, our future results of operations may be adversely affected. Further, due to market competition, volatility, and rapid technology and price changes, we may be unable to accurately forecast demand resulting in insufficient or excess production or purchase of products or components inventory, any of which could have a material adverse effect on our business and financial results.

We may not be able to identify suitable strategic alliances, acquisitions, joint ventures or investment opportunities to successfully acquire and integrate companies that provide complementary products or technologies or to realize the anticipated benefits of such transactions.

Our long-term growth strategy involves pursuing strategic alliances with, making acquisitions of, forming joint ventures with or making investments in other companies that are complementary to our business. There is substantial competition for

Seagate Technology public limited company | 2018 Form 10-K | 16

attractive strategic alliance, acquisition, joint venture and investment candidates. Additionally, a trend of consolidation in the data storage industry could materially adversely affect our business and financial results and our future growth prospects. Accordingly, we may not be able to identify suitable strategic alliances, acquisition, joint venture, or investment candidates. Even if we can identify them, the terms on which we are able to consummate a transaction may not be commercially reasonable for us to pursue. We cannot assure you that we will be able to partner with, acquire or invest in suitable candidates, or integrate acquired technologies or operations successfully into our existing technologies and operations. Moreover, our ability to finance potential strategic alliances, acquisitions, joint ventures or investments may be limited by our leverage level, the covenants contained in the instruments that govern our outstanding indebtedness, and any agreements governing any other debt we may incur. In addition, our cash reserves could diminish significantly as a result of any acquisitions, joint ventures, strategic alliances or other investments we pursue.

Even if we are successful in forming strategic alliances or acquiring, forming joint ventures with or making investments in other companies, these transactions may have an adverse effect on our results of operations, particularly while the operations of an acquired business are being integrated. It is also likely that integration of acquired companies would lead to the loss of key employees from those companies or the loss of customers of those companies. In addition, the integration of any acquired companies would require substantial attention from our senior management, which may limit the amount of time available to be devoted to our day-to-day operations or to the execution of our strategy. Growth by strategic alliance, acquisition, joint venture or investment involves an even higher degree of risk to the extent we combine new product offerings and enter new markets in which we have limited experience, and no assurance can be given that acquisitions of entities with new or alternative business models will be successfully integrated or achieve the desired objectives. There can be no assurance that we will realize the anticipated benefits or synergies of any strategic alliance, acquisition, joint venture or investment that we make or, if we do, how long it will take to achieve such benefits.

Furthermore, the expansion of our business involves the risk that we may not manage our growth effectively, that we would incur additional debt to finance these acquisitions or investments that would increase our debt service obligations, and that we may have impairment of goodwill or acquired intangible assets associated with these acquisitions and investments. Each of these items could have a material adverse effect on our financial condition and results of operations.

In addition, we could issue additional ordinary shares in connection with future strategic alliances, acquisitions, joint ventures or investments. Issuing shares in connection with such transactions would have the effect of diluting the ownership percentage of the outstanding ordinary shares and could cause the price of our ordinary shares to decline and impact our existing dividend policy or share repurchase program resulting in diminishing shareholders’ value.

If we do not develop products in time to keep pace with technological changes, our results of operations will be adversely affected.

Our customers demand new generations of storage products as advances in computer hardware and software have created the need for improved storage products, with features such as increased storage capacity, enhanced security, improved performance and reliability and lower cost. We, and our competitors, have developed improved products, and we will need to continue to do so in the future. Such product development requires significant investments in research and development. We cannot assure you that we will be able to successfully complete the design or introduction of new products in a timely manner, that we will be able to manufacture new products in sufficient volumes with acceptable manufacturing yields, that we will be able to successfully market these new products or that these products will perform to specifications on a long-term basis. In addition, the impact of slowing areal density growth may adversely impact our ability to be successful.

When we develop new products with higher capacity and more advanced technology, our results of operations may decline because the increased difficulty and complexity associated with producing these products increases the likelihood of reliability, quality or operability problems. If our products experience increases in failures rates, are of low quality or are not reliable, customers may reduce their purchases of our products, our factory utilization may decrease and our manufacturing rework and scrap costs and our service and warranty costs may increase. In addition, a decline in the reliability of our products may make us less competitive.

Additionally, we may be unable to produce new products that have higher capacities and more advanced technologies in the volumes and timeframes that are required to meet customer demand. We announced our future transition to key areal density recording technologies that will use heated-assisted magnetic reading (“HAMR”) technology to increase HDD

Seagate Technology public limited company | 2018 Form 10-K | 17

capacities. If our transitions to more advanced technologies, including the transition to HDDs utilizing HAMR technology, require development and production cycles that are longer than anticipated or if we otherwise fail to implement new HDD technologies successfully, we may lose sales and market share, which could significantly harm our financial condition.

We may fail to successfully anticipate technological shifts, business opportunities and market demand. We also may be subject to risks associated with entry into the NAND flash memory market. If we are unable to successfully to penetrate the NAND flash memory market, our future growth prospects may be materially adversely affected. We may fail to develop new products, identify business strategies and introduce competitive product offerings to meet those technological shifts which may materially adversely affect our ability to compete effectively and may impact our future financial results.

Servicing our indebtedness requires a significant amount of cash, and we may not have sufficient cash flow from our business to pay our substantial debt.

We are leveraged and have significant debt service obligations. Our significant debt and debt service requirements could adversely affect our ability to operate our business and may limit our ability to take advantage of potential business opportunities and reduce our options for capital allocation. Our high level of debt presents the following risks:

Our business may not generate cash flow in an amount sufficient to enable us to pay the principal of, or interest on, our indebtedness. Further, in the event that we need to refinance all or a portion of our outstanding debt as it matures or incur additional debt to fund our operations, we may not be able to obtain terms as favorable as the terms of our existing debt or refinance our existing debt at all. If prevailing interest rates or other factors result in higher interest rates upon refinancing, then the interest expense relating to the refinanced debt would increase. Furthermore, if any rating agency changes our credit rating or outlook, our debt and equity securities could be negatively affected, which could adversely affect our ability to refinance existing debt or raise additional capital.

In addition, our business may not generate cash flow in an amount sufficient to enable us to fund our other liquidity needs, including working capital, capital expenditures, product development efforts, strategic acquisitions, investments and alliances and other general corporate requirements. If we cannot fund our liquidity needs, we will have to take actions such as reducing or delaying capital expenditures, product development efforts, strategic acquisitions, investments and alliances, and other general corporate requirements. We cannot assure you that any of these remedies could, if necessary, be effected on commercially reasonable terms, or at all, or that they would permit us to meet our scheduled debt service obligations. In addition, if we incur additional debt, the risks associated with our substantial leverage, including the risk that we will be unable to service our debt or generate enough cash flow to fund our liquidity needs, could intensify.

Changes in demand for computer systems and storage subsystems may in the future cause a decline in demand for our products.

Our products are components in computers, data storage systems, and consumer electronics devices. Historically, the demand for these products has been volatile. Unexpected slowdowns in demand for computer systems, storage subsystems

Seagate Technology public limited company | 2018 Form 10-K | 18

or consumer electronics devices generally cause sharp declines in demand for our products. Declines in consumer spending could have a material adverse effect on demand for our products and services and on our financial condition and results of operations.

While sales to edge non-compute/client non-compute and Cloud Systems and Solutions markets are becoming a more significant source of revenue, sales to the edge compute/client compute market remain an important part of our business. The edge compute/client compute market, however, has been, and we expect it to continue to be, adversely affected by the growth of tablet computers, smart phones and similar devices that perform many of the same capabilities as computers, the lengthening of product life cycles and macroeconomic conditions. We believe that the deterioration of the edge compute/client compute market has accelerated recently, and that this accelerated deterioration may continue or further accelerate, which could cause our operating results to suffer. Additionally, if demand in the edge compute/client compute market is worse than expected as a result of these or other conditions, demand for our products in the edge compute/client compute market may decrease at a faster rate and our operating results may be adversely affected.

The Enterprise Storage market for disk drives has been adversely affected by the growth of the utilization of NAND flash memory in mission critical applications. This deterioration of the Enterprise Storage disk drive market could cause our operating results to suffer. An acceleration of the pace of migration of the Enterprise Storage market to NAND flash memory products may materially adversely affect our financial results.

Historically, causes of declines in demand for our products have included weakness in macroeconomic environments, announcements or introductions of major new operating systems or semiconductor improvements or shifts in consumer preferences and behavior, such as the shift to mobile devices. We believe these announcements and introductions have from time to time caused consumers to defer their purchases and made inventory obsolete. Whenever an oversupply of products causes participants in our industry to have higher than anticipated inventory levels, we experience even more intense price competition from other manufacturers than usual, which may materially adversely affect our financial results.

Increases in the areal density of our disk drives may outpace our customers’ demand for storage capacity.

The rate of increase in areal density, or storage capacity per square inch on a disk, may be greater than the increase in our customers’ demand for aggregate storage capacity, particularly in certain market applications, such as edge compute/client compute. As a result, our customers’ storage capacity needs may be satisfied with lower priced, low capacity disk drives. These factors could decrease our sales, especially when combined with continued price erosion, which could adversely affect our results of operations.

We may not be successful in our efforts to grow our cloud systems and solutions revenues.

We have made and continue to make investments to grow our cloud systems and solutions revenues. Our ability to grow cloud systems and solutions revenues is subject to the following risks:

Our results of operations and share price may be adversely affected if we are not successful in our efforts to grow our revenues as anticipated. In addition, our growth in these markets may bring us into closer competition with some of our customers or potential customers, which may decrease their willingness to do business with us.

Seagate Technology public limited company | 2018 Form 10-K | 19

Changes in the macroeconomic environment may in the future negatively impact, our results of operations.

Changes in macroeconomic conditions may affect consumer and enterprise spending, and as a result, our customers may postpone spending in response to volatility in credit and equity markets, negative financial news and/or declines in income or asset values, all of which may have a material adverse effect on the demand for our products. Additionally, enterprise spending continues to remain cautious in many regions around the world. Other factors that could influence demand include conditions in the labor market, healthcare costs, access to credit, consumer confidence and other macroeconomic factors affecting consumer spending behavior. These and other economic factors could have a material adverse effect on demand for our products and on our financial condition and results of operations.

Macroeconomic developments such as the pending withdrawal of the United Kingdom from the European Union, the debt crisis in certain countries in the European Union, slowing economies in parts of Asia and South America or increased tariffs could negatively affect our business, operating results or financial condition which, in turn, could adversely affect the price of our ordinary shares. A general weakening of, and related declining corporate confidence in, the global economy or the curtailment in government or corporate spending could cause current or potential customers to reduce their IT budgets or be unable to fund hardware systems, which could cause customers to delay, decrease or cancel purchases of our products or cause customers not to pay us or to delay paying us for previously purchased products and services.

Our quarterly results of operations fluctuate, sometimes significantly, from period to period, and may cause our share price to decline.

Our quarterly revenue and results of operations may fluctuate, sometimes significantly, from period to period. These fluctuations, which we expect to continue, may be occasioned by a variety of factors, including:

Seagate Technology public limited company | 2018 Form 10-K | 20

As a result, we believe that quarter-to-quarter and year-over-year comparisons of our revenue and results of operations may not be meaningful, and that these comparisons may not be an accurate indicator of our future performance. Our results of operations in one or more future quarters may fail to meet the expectations of investment research analysts or investors, which could cause an immediate and significant decline in our market value.

We experience seasonal declines in the sales of our products during the second half of our fiscal year which may adversely affect our results of operations.

Sales of computer systems, storage subsystems and consumer electronics tend to be seasonal, and therefore, we expect to continue to experience seasonality in our business as we respond to variations in our customers’ demand for our products. In particular, we anticipate that sales of our products will continue to be lower during the second half of our fiscal year. In the edge compute/client compute and edge non-compute/client non-compute market applications of our disk drive business, this seasonality is partially attributable to the historical trend in our results derived from our customers’ increased sales of desktop computers, notebook computers, and consumer electronics during the back-to-school and winter holiday season. In the enterprise storage market, our sales are seasonal because of the capital budgeting and purchasing cycles of our end users. Since our working capital needs peak during periods in which we are increasing production in anticipation of orders that have not yet been received, our results of operations will fluctuate seasonally even if the forecasted demand for our products proves accurate. Furthermore, it is difficult for us to evaluate the degree to which this seasonality may affect our business in future periods because of the rate and unpredictability of product transitions and new product introductions, particularly in the edge non-compute/client non-compute market, as well as macroeconomic conditions.

We have a long and unpredictable sales cycle for enterprise data storage solutions, which impairs our ability to accurately predict our financial and operating results in any periods and may adversely affect our ability to forecast the need for investments and expenditures.

Our enterprise data storage solutions are technically complex and we typically supply them in high quantities to a small number of customers. Many of our products are also tailored to meet the specific requirements of individual customers, and are often integrated by our customers into the systems and products that they sell. Factors that affect the length of our sales cycle include:

As a result, our sales cycle for enterprise data storage solutions is often in excess of one year and frequently unpredictable. Given the length of development and unpredictability of the sales cycle, we may be unable to accurately forecast product demand, which may result in lost sales or excess inventory and associated inventory reserves or write-downs, each of which could harm our business, financial condition and results of operations.

In addition, the emerging and evolving nature of the market for the products that we sell may lead prospective customers to postpone their purchasing decisions. We invest resources and incur costs during this cycle that may not be recovered if we do not successfully conclude sales. These factors lead to difficulty in matching revenues with expenses and increased expenditures and inventory, which together may adversely impact our results of operations.

We may be adversely affected by the loss of, or reduced, delayed or canceled purchases by, one or more of our key customers or a counterparty’s default.

Some of our key customers account for a large portion of our disk drive revenue. While we have long-standing relationships with many of our customers, if any of our key customers were to significantly reduce their purchases from us, our results of operations would be adversely affected. Although sales to key customers may vary from period to period, a key customer that permanently discontinues or significantly reduces its relationship with us could be difficult to replace. In line with industry practice, new customers usually require that we pass a lengthy and rigorous qualification process at the customer’s cost. Accordingly, it may be difficult or costly for us to attract new key customers. Additionally, mergers, acquisitions,

Seagate Technology public limited company | 2018 Form 10-K | 21

consolidations or other significant transactions involving our customers generally entail risks to our business. If a significant transaction involving any of our key customers results in the loss of or reduction in purchases by these key customers, it could have a materially adverse effect on our business, results of operations and financial condition.

If a counterparty fails to comply with their contractual obligations, our business, results of operations and financial condition may be adversely affected. Our ability to mitigate a counterparty’s default may be impeded or diminished by various factors including the terms of our contractual arrangements, market conditions, counterparty insolvency or bankruptcy, or applicable laws and regulations.

We are dependent on sales to distributors and retailers, which may increase price erosion and the volatility of our sales.

A substantial portion of our sales has been to distributors of disk drive products. Certain of our distributors may also market other products that compete with our products. Product qualification programs in this distribution channel are limited, which increases the number of competing products that are available to satisfy demand, particularly in times of lengthening product cycles. As a result, purchasing decisions in this channel are based largely on price, terms and product availability. Sales volumes through this channel are also less predictable and subject to greater volatility than sales to our OEM customers. In addition, deterioration in business and economic conditions could exacerbate price erosion and volatility as distributors lower prices to compensate for lower demand and higher inventory levels. Our distributors’ ability to access credit for purposes of funding their operations may also affect purchases of our products by these customers. If distributors reduce their purchases of our products or prices decline significantly in this distribution channel or if distributors experience financial difficulties or terminate their relationships with us, our revenues and results of operations would be adversely affected.

In addition, retail sales of our consumer solutions traditionally experience seasonal variability in demand with higher levels of demand in the first half of our fiscal year driven by consumer spending in the back-to-school season from late summer to fall and the traditional holiday shopping season from fall to winter. Our ability to reach such consumers depends on us maintaining effective working relationships with major retailers and distributors. Failure to anticipate consumer demand for our branded solutions as well as an inability to maintain effective working relationships with retail and online distributors may adversely impact our future results of operations.

Our international sales and manufacturing operations subject us to risks that may adversely affect our business related to disruptions in foreign markets, currency exchange fluctuations, longer payment cycles, seasonality, limitations imposed by a variety of legal and regulatory regimes, potential adverse tax consequences, increased costs, our customers’ credit and access to capital, health-related risks, investment risks, tariffs, privacy and protection of data and access to personnel.

We have significant sales and manufacturing operations in foreign countries, including manufacturing facilities, sales personnel and customer support operations. We have manufacturing facilities in China, Malaysia, Northern Ireland, Singapore and Thailand, in addition to those in the United States. Additionally, the manufacturing of some of our products is concentrated in certain geographical locations. The production of certain drive subassemblies are limited to Thailand and the production of media is limited to Singapore. Disruptions in the economic, environmental, political, legal or regulatory landscape in these countries may have a material adverse impact on our manufacturing operations.

Our international operations are subject to economic risks inherent in doing business in foreign countries, including the following:

Seagate Technology public limited company | 2018 Form 10-K | 22

Seagate Technology public limited company | 2018 Form 10-K | 23

Seagate Technology public limited company | 2018 Form 10-K | 24

Declines in the value of our investment in K.K. Pangea (“Pangea”) may adversely impact our financial condition and results of operations.

On May 31, 2018, we invested $1.3 billion in non-convertible preferred stock of Pangea for the acquisition of Toshiba Memory Corporation with a consortium of investors led by Bain Capital Private Equity. The investment, with a contractual maturity of six years, is accounted for as a held-to-maturity debt security, carried at amortized cost and has a contractual payment-in-kind (“PIK”) income that is accrued and added to the carrying value of the investment. If the fair value of our investment, including the accrued PIK income declines, we may be required to record impairment charges, which could have a material adverse effect on our liquidity and our results of operations. Numerous factors could cause the fair value of our investment to decline, including the credit worthiness of Pangea, adverse changes in business climate, adverse actions by regulators, or unanticipated changes in the competitive environment or the industries in which Pangea operates. Increased volatility in the financial markets and overall economic uncertainty could increase the risk that actual amounts realized on our investment may differ significantly from the fair values currently assigned to them.

We could suffer a loss of revenue and increased costs, exposure to significant liability including legal and regulatory consequences, reputational harm, and other serious negative consequences if we encounter cyber-attacks, ransomware or other cyber security breaches that disrupt our operations or result in the dissemination of proprietary or confidential information about us or our customers or other third parties.

Our operations are dependent upon our ability to protect our computer equipment and the electronic data stored in our databases from damage by, among other things, earthquake, floods, fire, natural disasters, accidents, power or water disruptions, telecommunications failures, acts of terrorism or war, employee misconduct, physical or electronic break-ins, cyber-attacks, ransomware, system security breaches or similar events or disruptions. We manage and store various proprietary information and sensitive or confidential data relating to our operations. As our operations become more automated and increasingly interdependent, our exposure to the risks posed by these types of events will increase. The measures we have implemented to secure our computer equipment and electronic data may be vulnerable to employee error, hacking, malfeasance, system error, or other irregularities and may not be sufficient for all eventualities. The insurance coverage we maintain that is intended to address certain data security risks, may be insufficient to cover all types of claims or losses that may arise. We have been, and will likely continue to be, subject to computer viruses or other malicious codes, cyber-attacks, or other computer-related attempts to breach the information technology (“IT”) systems we use for these purposes. We may also be subject to IT system failures and network disruptions due to these factors. Experienced computer programmers and hackers may be able to penetrate our network security, misappropriate or compromise our confidential information or that of third-parties, create system disruptions, or cause shutdowns. Computer programmers and hackers also may be able to develop and deploy viruses, worms, and other malicious software programs that attack our products or otherwise exploit any security vulnerabilities of our products. Such attempts are increasing in technical sophistication, number and ability to evade detection or to obscure such activities. Although we take steps to protect against and detect such attempts, our efforts may not be sufficient for all eventualities. In addition, sophisticated hardware and operating system software and applications that we produce or procure from third-parties may contain defects in design or manufacture, including “bugs” and other problems that could unexpectedly interfere with the operation of the system.

The costs to us to eliminate or address the foregoing security problems and security vulnerabilities before or after a cyber-incident could be significant. System redundancy may be ineffective or inadequate, and our disaster recovery planning may not be sufficient for all eventualities. Our remediation efforts may not be successful and could result in interruptions, delays, or cessation of service, and loss of existing or potential customers that may impede our sales, manufacturing, distribution, or other critical functions. We could lose existing or potential customers for outsourcing services or other IT solutions in connection with any actual or perceived security vulnerabilities in our products. Some of our products contain encryption and other measures to protect third-party content stored on our products. Such measures may be compromised, breached or circumvented by sophisticated attackers and losses or unauthorized access to or releases of confidential information may occur. Breaches of our security measures and the unapproved dissemination of proprietary information or sensitive or confidential data about us or our customers or other third-parties, could expose us, our vendors and customers, or other third-parties affected to a risk of loss or misuse of this information, result in litigation or governmental investigations and potential liability for us, damage our brand and reputation, or otherwise harm our business. Failure to meet our contractual obligations to promote information security with certain customers may result in liability, including additional costs, indemnification claims, litigation and damage to our brand and reputation. In addition, we rely in certain limited capacities on third-party data

Seagate Technology public limited company | 2018 Form 10-K | 25

management providers whose possible security problems and security vulnerabilities may have similar effects on us. Our business, brand and reputation could also be adversely affected by media or other reports of perceived security vulnerabilities in our products, network, or processes, even if unsubstantiated.

We are subject to laws, rules, and regulations in the U.S., U.K., EU and other countries relating to the collection, use, and security of user data. In many cases, these laws apply not only to third-party transactions, but also to transfers of information between us and our subsidiaries, and among us, our subsidiaries and other parties with which we have commercial relations. Our ability to execute transactions and to possess and use personal information and data in conducting our business subjects us to legislative and regulatory burdens that may require us to notify vendors, customers or employees of a data security breach. We have incurred, and will continue to incur, significant expenses to comply with mandatory privacy and security standards and protocols imposed by law, regulation, industry standards, or contractual obligations. These laws, protocols and standards continue to develop and may be inconsistent from jurisdiction to jurisdiction. Complying with emerging and changing international requirements may cause us to incur substantial costs or require us to change our business practices. If we fail to comply with applicable federal, state or international privacy-related or data protection laws we may be subject to proceedings by governmental entities and incur penalties, significant legal liability, or reputational harm.

We must successfully maintain and upgrade our IT systems, and our failure to do so could have a material adverse effect on our business, financial condition and results of operations.

From time to time, we expand and improve our IT systems to support our business going forward. Consequently, we are in the process of implementing, and will continue to invest in and implement, modifications and upgrades to our IT systems and procedures, including making changes to legacy systems or acquiring new systems with new functionality, and building new policies, procedures, training programs and monitoring tools. These types of activities subject us to inherent costs and risks associated with changing and acquiring these systems, including capital expenditures, additional operating expenses, demands on management time and other risks and costs of delays or difficulties in transitioning to or integrating new systems into our current systems. These implementations, modifications and upgrades may not result in productivity improvements at a level that outweighs the costs of implementation, or at all. In addition, difficulties with implementing new technology systems, delays in our timeline for planned improvements, significant system failures, or our inability to successfully modify our IT systems to respond to changes in our business needs may cause disruptions in our business operations and have a material adverse effect on our business, financial condition and results of operations.

From time to time, we may be subject to litigation, government investigations or governmental proceedings, which may adversely impact our results of operations and financial condition.

From time to time, we may be involved in various legal, regulatory or administrative investigations, negotiations or proceedings arising in the normal course of business. In the event of litigation, government investigations or governmental proceedings, we are subject to the inherent risks and uncertainties that may result if outcomes differ from our expectations. In the event of adverse outcomes in any litigation, investigation or government proceeding, we could be required to pay substantial damages, fines or penalties, and cease certain practices or activities, which could materially harm our business.

The costs associated with litigation and government investigations can also be unpredictable depending on the complexity and length of time devoted to such litigation or investigation. Litigation, investigations or government proceedings may also divert the efforts and attention of our key personnel, which could also harm our business.

If we do not control our fixed costs, we will not be able to compete effectively in our industry.

We continually seek to make our cost structure and business processes more efficient. We are focused on increasing workforce flexibility and scalability, and improving overall competitiveness by leveraging our global capabilities, as well as external talent and skills, worldwide. Our strategy involves, to a substantial degree, increasing revenue and product volume while at the same time controlling operating expenses. If we do not control our operating expenses, our ability to compete in the marketplace may be impaired. In the past, activities to reduce operating costs have included closures and transfers of facilities, significant personnel reductions, restructuring efforts and efforts to increase automation. Our restructuring efforts may not yield the intended benefits and may be unsuccessful or disruptive to our business operations which may materially adversely affect our financial results.

Seagate Technology public limited company | 2018 Form 10-K | 26

If we experience shortages or delays in the receipt of, or cost increases in, critical components, equipment or raw materials necessary to manufacture our products, we may suffer lower operating margins, production delays and other material adverse effects.

The cost, quality and supply of components, subassemblies, certain equipment and raw materials used to manufacture our products and key components like recording media and heads are critical to our success. The equipment we use to manufacture our products and components is frequently custom made and comes from a few suppliers and the lead times required to obtain manufacturing equipment can be significant. Particularly important for our products are components such as read/write heads, substrates for recording media, ASICs, spindle motors, printed circuit boards, suspension assemblies and NAND flash memory.

We rely on sole suppliers or a limited number of suppliers for some or all of these components that we do not manufacture, including substrates for recording media, read/write heads, ASICs, spindle motors, printed circuit boards, suspension assemblies and NAND flash memory. Many of such component suppliers are geographically concentrated which makes our supply chain more vulnerable to regional disruptions such as severe weather, acts of terrorism and an unpredictable geopolitical climate which may have a material impact on the production and availability of many components. If our vendors for these components are unable to meet our cost, quality, and supply requirements, continue to remain financially viable or fulfill their contractual commitments and obligations, we could experience a shortage in supply or an increase in production costs, which would materially adversely affect our results of operations.

Certain rare earth elements are critical in the manufacture of our products. We purchase components that contain rare earth elements from a number of countries, including China. We cannot predict whether any nation will impose regulations or trade barriers including tariffs, duties, quotas or embargoes upon the rare earth elements incorporated into our products that would restrict the worldwide supply of such metals or increase their cost. We have experienced increased costs and production delays when we were unable to obtain the necessary equipment or sufficient quantities of some components, and/or have been forced to pay higher prices or make volume purchase commitments or advance deposits for some components, equipment or raw materials that were in short supply in the industry in general. Further, if our customers experience shortages of components or materials used in their products it could result in a decrease in demand for our products and have an adverse effect on our results of operations. If any major supplier were to restrict the supply available to us or increase the cost of the rare earth elements used in our products, we could experience a shortage in supply or an increase in production costs, which would adversely affect our results of operations.

Consolidation among component manufacturers has resulted and may continue to result in some component manufacturers exiting the industry or not making sufficient investments in research to develop new components.

If there is a shortage of, or delay in supplying us with, critical components, equipment or raw materials, then:

We cannot assure you that we will be able to obtain critical components in a timely and economic manner. Many of our suppliers’ manufacturing facilities are fully utilized. If they fail to invest in capacity or in the required timeframe, such failure would have an impact on our ability to ramp new products, and may result in a loss of revenue or market share if our competitors did not utilize the same components and were not affected.

We often aim to lead the market in new technology deployments and leverage unique and customized technology from single source suppliers who are early adopters in the emerging market. Our options in supplier selection in these cases are

Seagate Technology public limited company | 2018 Form 10-K | 27

limited and the supplier based technology may consequently be single sourced until wider adoption of the technology occurs and any necessary licenses become available. In such cases, any technical issues in the supplier’s technology may cause us to delay shipments of our new technology deployments and harm our financial position.

If revenues fall or customer demand decreases significantly, we may not meet all of our purchase commitments to certain suppliers.

From time to time, we enter into long-term, non-cancelable purchase commitments or make large up-front investments with certain suppliers in order to secure certain components or technologies for the production of our products or to supplement our internal manufacturing capacity for certain components. If our actual revenues in the future are lower than our projections or if customer demand decreases significantly below our projections, we may not meet all of our purchase commitments with these suppliers. As a result, it is possible that our revenues will not be sufficient to recoup our up-front investments, in which case we will have to shift output from our internal manufacturing facilities to these suppliers or make penalty-type payments under the terms of these contracts. Additionally, because our markets are volatile, competitive and subject to rapid technology and price changes, we face inventory and other asset risks in the event we do not fully utilize firm purchase commitments.

Conflict minerals regulations may cause us to incur additional expenses and could limit the supply and increase the cost of certain metals used in manufacturing our products.

In August 2012, the SEC adopted rules establishing additional disclosure and reporting requirements regarding the use of specified minerals, or conflict minerals, that are necessary to the functionality or production of products manufactured or contracted to be manufactured. These rules may require us to determine, disclose and report whether or not such conflict minerals originate from the Democratic Republic of the Congo or an adjoining country. These rules could affect our ability to source, directly or indirectly, certain materials used in our products at competitive prices and could impact the availability of certain minerals used in the manufacture of our products, including gold, tantalum, tin and tungsten. As there may be only a limited number of suppliers of “conflict free” minerals, we cannot be sure that we will be able to obtain necessary conflict free minerals in sufficient quantities or at competitive prices. Our customers, including our OEM customers, may require that our products be free of conflict minerals, and our revenues and margins may be harmed if we are unable to procure conflict free minerals at a reasonable price, or at all, or are unable to pass through any increased costs associated with meeting these demands. Additionally, we may face reputational challenges with our customers and our manufacturing 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. We expect that there may be material costs associated with complying with the disclosure requirements, such as costs related to determining the source of certain minerals used in our products, as well as costs related to possible changes to products, processes, or sources of supply as a consequence of such verification and disclosure requirements. Additionally, the regulatory and compliance framework for conflict minerals may undergo changes which may further increase the cost of compliance. Our customers and manufacturing stakeholders may place increased demands on our compliance framework which may in turn negatively impact our relationships with our suppliers.

The loss of key executive officers and employees could negatively impact our business prospects.

Our future performance depends to a significant degree upon the continued service of key members of management as well as marketing, sales and product development personnel. The loss of one or more of our key personnel may have a material adverse effect on our business, results of operations and financial condition. We believe our future success will also depend in large part upon our ability to attract, retain and further motivate highly skilled management, marketing, sales and product development personnel. We have experienced intense competition for personnel, and we cannot assure you that we will be able to retain our key employees or that we will be successful in attracting, assimilating and retaining personnel in the future.

Due to the complexity of our products, some defects may only become detectable after deployment.

Our products are highly complex and are designed to operate in and form part of larger complex networks and storage systems. Our products may contain a defect or be perceived as containing a defect by our customers, as a result of improper use or maintenance. Lead times required to manufacture certain components are significant, and a quality excursion may take

Seagate Technology public limited company | 2018 Form 10-K | 28

significant time and resources to remediate. Defects in our products, third-party components, or in the networks and systems of which they form a part, directly or indirectly, have resulted in and may in the future result in:

Defects in our products could also result in legal actions by our customers for property damage, injury or death. Such legal actions, including but not limited to product liability claims could exceed the level of insurance coverage that we have obtained. Any significant uninsured claims could significantly harm our financial condition.

Political events, war, terrorism, natural disasters, public health issues and other circumstances could materially adversely affect our results of operations and financial condition.

War, terrorism, geopolitical uncertainties, natural disasters, public health issues and other business interruptions have caused and could cause damage or disruption to international commerce and the global economy, and thus could have a strong negative effect on our business, our suppliers, logistics providers, manufacturing vendors and customers. Our business operations are subject to interruption by natural disasters such as floods and earthquakes, fires, power or water shortages, terrorist attacks, other hostile acts, labor disputes, public health issues, and other events beyond our control. Such events may decrease demand for our products, make it difficult or impossible for us to make and deliver products to our customers, or to receive components from our suppliers, and create delays and inefficiencies in our supply chain. In the event of a natural disaster, losses and significant recovery time could be required to resume operations and our financial condition and operating results could be materially adversely affected. Should major public health issues, including pandemics, arise, we could be negatively affected by stringent employee travel restrictions, additional limitations in freight services, governmental actions limiting the movement of products between regions, delays in production ramps of new products, and disruptions in our operations and some of our key customers.

Failure to comply with applicable environmental laws and regulations could have a material adverse effect on our business, results of operations and financial condition.

The sale and manufacturing of products in certain states and countries may subject us and our suppliers to state, federal and international laws and regulations governing protection of the environment, including those governing discharges of pollutants into the air and water, the management and disposal of hazardous substances and wastes, the cleanup of contaminated sites, restrictions on the presence of certain substances in electronic products and the responsibility for environmentally safe disposal or recycling. We endeavor to ensure that we and our suppliers comply with all applicable environmental laws and regulations, however, compliance may increase our operating costs and otherwise impact future financial results. If additional or more stringent requirements are imposed on us in the future, we could incur additional operating costs and capital expenditures. If we fail to comply with applicable environmental laws, regulations, initiatives, or standards of conduct, our customers may refuse to purchase our products and we could be subject to fines, penalties and possible prohibition of sales of our products into one or more states or countries, liability to our customers and damage to our reputation, which could result in a material adverse effect on our financial condition or results of operations.

Any cost reduction initiatives that we undertake may not deliver the results we expect, and these actions may adversely affect our business.

From time to time, we engage in restructuring plans that may result in workforce reduction and consolidation of our real estate facilities and our manufacturing footprint. In addition, management will continue to evaluate our global footprint and cost

Seagate Technology public limited company | 2018 Form 10-K | 29

structure, and additional restructuring plans are expected to be formalized. As a result of our restructuring, we may experience a loss of continuity, loss of accumulated knowledge, disruptions to our operations and inefficiency during transitional periods. Additionally, global footprint consolidation and reduction in excess capacity may result in us being unable to respond to increase in forecasted volume of customer demand and loss of revenue opportunity if our competitors have underutilized factories. Any cost-cutting measures could impact employee retention. In addition, we cannot be sure that the cost reduction and global footprint consolidation will be successful in reducing our overall expenses as we expect or that additional costs will not offset any such reductions or global footprint consolidation. If our operating costs are higher than we expect or if we do not maintain adequate control of our costs and expenses, our results of operations may be adversely affected.

Our ability to use our net operating loss and tax credit carryforwards might be limited.

The use of a portion of our U.S. net operating loss and tax credit carryforwards is subject to annual limitations pursuant to U.S. tax law. Section 382 of the U.S. Internal Revenue Code generally imposes an annual limitation on the amount of net operating loss or tax credit carryforwards that might be used to offset taxable income when a corporation has undergone significant changes in ownership. As a result, future changes in ownership could put further limitations on the availability of our net operating loss or tax credit carryforwards.

Deterioration in global credit and financial market conditions could negatively impact the value of our current portfolio of cash equivalents or short-term investments and our ability to meet our financing objectives.

Our cash and cash equivalents are maintained in highly liquid investments with remaining maturities of 90 days or less at the time of purchase. Our short-term investments may include readily marketable debt securities with remaining maturities of more than 90 days at the time of purchase. Our investment policy has as its principal objectives the preservation of principal and maintenance of liquidity. We mitigate default risk by investing in high-quality investment grade securities with different counterparties, limiting the time to maturity and by monitoring the counterparties and underlying obligors closely.

We are not aware of any current material downgrades, losses, or other significant deterioration in the fair value of our cash equivalents or short-term investments, however, no assurance can be given that future deterioration in conditions of the global credit and financial markets would not negatively impact our current portfolio of cash equivalents or short-term investments or our ability to meet our financing objectives.

We are at times subject to intellectual property legal proceedings and claims which could cause us to incur significant additional costs or prevent us from selling our products, and which could adversely affect our results of operations and financial condition.

We are subject from time-to-time to legal proceedings and claims, including claims of alleged infringement of the patents, trademarks and other intellectual property rights of third parties by us, or our customers, in connection with their use of our products. Intellectual property litigation can be expensive and time-consuming, regardless of the merits of any claim, and could divert our management’s attention from operating our business. In addition, intellectual property lawsuits are subject to inherent uncertainties due to the complexity of the technical issues involved, which may cause actual results to differ materially from our expectations. Patent litigation has increased due to the current uncertainty of the law and the increasing competition and overlap of product functionality in the field. Some of the actions that we face from time-to-time seek injunctions against the sale of our products and/or substantial monetary damages, which if granted or awarded, could materially harm our business, financial condition and operating results.

We cannot be certain that our products do not and will not infringe issued patents or other intellectual property rights of others. We may not be aware of currently filed patent applications that relate to our products or technology. If patents are later issued on these applications, we may be liable for infringement. If our products were found to infringe the intellectual property rights of others, we could be required to pay substantial damages, cease the manufacture, use and sale of infringing products in one or more geographic locations, expend significant resources to develop non-infringing technology, discontinue the use of specific processes or obtain licenses to the technology infringed. We might not be able to obtain the necessary licenses on acceptable terms, or at all, or be able to reengineer our products successfully to avoid infringement. Any of the foregoing could cause us to incur significant costs and prevent us from selling our products, which could adversely affect our results of operations and financial condition. See “Item 8. Financial Statements and Supplementary Data-Note 14. Legal, Environmental and Other Contingencies” contained in this report for a description of pending intellectual property proceedings.

Seagate Technology public limited company | 2018 Form 10-K | 30

We may be unable to protect our intellectual property rights, which could adversely affect our business, financial condition and results of operations.

We rely on a combination of patent, trademark, copyright and trade secret laws, confidentiality procedures and licensing arrangements to protect our intellectual property rights. In the past, we have been involved in significant and expensive disputes regarding our intellectual property rights and those of others, including claims that we may be infringing patents, trademarks and other intellectual property rights of third-parties. We expect that we will be involved in similar disputes in the future.

There can be no assurance that:

In addition, our competitors may be able to design their products around our patents and other proprietary rights. Enforcement of our rights often requires litigation. If we bring a patent infringement action and are not successful, our competitors would be able to use similar technology to compete with us. Moreover, the defendant in such an action may successfully counter sue us for infringement of their patents or assert a counterclaim that our patents are invalid or unenforceable.

Furthermore, we have significant operations and sales in foreign countries where intellectual property laws and enforcement policies are often less developed, less stringent or more difficult to enforce than in the United States. Therefore, we cannot be certain that we will be able to protect our intellectual property rights in jurisdictions outside the United States.

The price of our ordinary shares may be volatile and could decline significantly.

The stock market, in general, and the market for technology stocks in particular, has experienced volatility that has often been unrelated to the operating performance of companies. If these market or industry-based fluctuations continue to occur in the future, the trading price of our ordinary shares could decline significantly independent of our actual operating performance, and shareholders could lose all or a substantial part of their investment. The market price of our ordinary shares could fluctuate significantly in response to several factors, including among others:

Seagate Technology public limited company | 2018 Form 10-K | 31

In the past, following periods of decline in the market price of a company’s securities, class action lawsuits have often been pursued against that company. If similar litigation were pursued against us, it could result in substantial costs and a diversion of management’s attention and resources, which could materially adversely affect our results of operations, financial condition and liquidity.

Any decision to reduce or discontinue the payment of cash dividends to our shareholders or the repurchase of our ordinary shares pursuant to our previously announced share repurchase program could cause the market price of our ordinary shares to decline significantly.

Although we have announced targeted regular cash dividend amounts and a share repurchase program, we are under no obligation to pay cash dividends to our shareholders in the future at the announced targeted levels or at all or to repurchase our ordinary shares at any particular price or at all. The declaration and payment of any future dividends is at the discretion of our Board of Directors and our previously announced share repurchase program may be suspended or discontinued at any time. Our payment of quarterly cash dividends and the repurchase of our ordinary shares pursuant to our share repurchase program are subject to, among other things, our financial position and results of operations, available cash and cash flow, capital and regulatory requirements, market and economic conditions, our ordinary share price and other factors. Any reduction or discontinuance by us of the payment of quarterly cash dividends or the repurchase of our ordinary shares pursuant to our share repurchase program could cause the market price of our ordinary shares to decline significantly. Moreover, in the event our payment of quarterly cash dividends or repurchases of our ordinary shares are reduced or discontinued, our failure to resume such activities at historical levels could result in a persistent lower market valuation of our ordinary shares.

None.

Seagate Technology public limited company | 2018 Form 10-K | 32

Our company headquarters are located in Ireland, while our U.S. executive offices are located in Cupertino, California. Our principal manufacturing facilities are located in China, Malaysia, Northern Ireland, Singapore, Thailand and the United States. Our principal product development facilities are located in California, Colorado, Minnesota and Singapore. Our leased facilities are occupied under leases that expire on various dates through 2082.

Our main material manufacturing, product development and marketing and administrative facilities at June 29, 2018 are as follows:

As of June 29, 2018, we owned or leased a total of approximately 11.0 million square feet of space worldwide. We occupied approximately 6.9 million square feet for manufacturing purposes, 2.0 million square feet for product development purposes and 0.8 million square feet for marketing and administrative purposes. The 11.0 million square feet of owned or leased space includes a total of 1.3 million square feet that is currently unoccupied. Substantially all of this unoccupied space relates to owned facilities that are being actively marketed for disposition and have been classified as held for sale assets included in Other current assets in the Consolidated Balance Sheet as of June 29, 2018. We believe that our existing properties are in good operating condition and are suitable for the operations for which they are used.

See “Item 8. Financial Statements and Supplementary Data—Note 14. Legal, Environmental and Other Contingencies.”

Not applicable.

Seagate Technology public limited company | 2018 Form 10-K | 33

PART II

Market Information

Our shares trade on the NASDAQ Global Select Market under the symbol “STX.” The high and low sales prices of our shares, as reported by the NASDAQ Global Select Market, are set forth below for the periods indicated.

As of July 30, 2018 there were approximately 580 holders of record of our ordinary shares. We did not sell any of our equity securities during fiscal year 2018 that were not registered under the Securities Act of 1933, as amended.

Seagate Technology public limited company | 2018 Form 10-K | 34

Performance Graph

The performance graph below shows the cumulative total shareholder return on our ordinary shares for the period from June 28 2013 to June 29, 2018. This is compared with the cumulative total return of the Dow Jones US Computer Hardware Index and the Standard & Poor’s 500 Stock Index (“S&P 500”) over the same period. The graph assumes that on June 28, 2013, $100 was invested in our ordinary shares and $100 was invested in each of the other two indices, with dividends reinvested on the date of payment without payment of any commissions. Dollar amounts in the graph are rounded to the nearest whole dollar. The performance shown in the graph represents past performance and should not be considered an indication of future performance.

COMPARISON OF 60 MONTH

CUMULATIVE TOTAL RETURN*

Among Seagate Technology plc, The S&P 500 Index

And The Down Jones US Computer Hardware Index

Copyright ^© 2018 Bloomberg Finance L.P. All rights reserved.

Dividends

Our ability to pay dividends in the future will be subject to, among other things, general business conditions within the disk drive industry, our financial results, the impact of paying dividends on our credit ratings and legal and contractual restrictions on the payment of dividends by our subsidiaries to us or by us to our ordinary shareholders, including restrictions imposed by covenants on our debt instruments.

From the closing of our initial public offering in December 2002 through fiscal year 2018, we have paid dividends, pursuant to our dividend policy then in effect, totaling approximately $5.6 billion in the aggregate.

Seagate Technology public limited company | 2018 Form 10-K | 35

The following dividends were declared in the last two fiscal years:

In addition, on July 30, 2018, the Board of Directors of the Company declared a quarterly cash dividend of $0.63 per share, which will be payable on October 3, 2018 to shareholders of record as of the close of business on September 19, 2018.

Repurchases of Our Equity Securities

As of June 29, 2018, $0.9 billion remained available for repurchase under the existing repurchase authorization limits. All repurchases are effected as redemptions in accordance with the Company’s Articles of Association. There is no expiration date on our repurchase authorizations.

The following table sets forth information with respect to all repurchases of our shares made during the fiscal year ended June 29, 2018, including statutory tax withholdings related to vesting of employee equity awards:

The following selected consolidated financial data set forth below is not necessarily indicative of results of future operations, and should be read in conjunction with “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the Consolidated Financial Statements and related notes thereto included in “Item 8. Financial Statements and Supplementary Data” of this Annual Report on Form 10-K, which are incorporated herein by reference, to fully understand factors that may affect the comparability of the information presented below.

Seagate Technology public limited company | 2018 Form 10-K | 36

The Consolidated Statements of Operations data for the fiscal years ended June 29, 2018, June 30, 2017 and July 1, 2016, and the Consolidated Balance Sheets data as of June 29, 2018 and June 30, 2017, are derived from our audited Consolidated Financial Statements appearing elsewhere in this Annual Report on Form 10-K. The Consolidated Statements of Operations data for the fiscal years ended July 3, 2015 and June 27, 2014, and the Consolidated Balance Sheets data at July 1, 2016, July 3, 2015 and June 27, 2014, are derived from our audited Consolidated Financial Statements that are not included in this Annual Report on Form 10-K.

Supplementary Financial Data (Unaudited)

Quarterly Data

The Company operated and reported financial results based on 13-week quarters in fiscal years 2018 and 2017, which ended on the Friday closest to September 30, December 31, March 31 and June 30.

Seagate Technology public limited company | 2018 Form 10-K | 37

Seagate Technology public limited company | 2018 Form 10-K | 38

The following is a discussion of the Company’s financial condition, changes in financial condition and results of operations for the fiscal years ended June 29, 2018, June 30, 2017 and July 1, 2016.

You should read this discussion in conjunction with “Item 6. Selected Financial Data” and “Item 8. Financial Statements and Supplementary Data” included elsewhere in this Annual Report on Form 10-K. Except as noted, references to any fiscal year mean the twelve-month period ending on the Friday closest to June 30 of that year. Accordingly, fiscal year 2018 comprised 52 weeks and ended on June 29, 2018. Fiscal year 2017 comprised 52 weeks and ended on June 30, 2017. Fiscal year 2016 comprised 52 weeks and ended on July 1, 2016. Fiscal year 2019 will be comprised of 52 weeks and will end on June 28, 2019.

This section and other parts of this Annual Report on Form 10-K contain forward-looking statements that involve risks and uncertainties. Forward-looking statements can also be identified by words such as “expects,” “anticipates,” “assumes,” “targets,” “projects,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “continues,” “may,” “should,” “could,” “depend,” “will,” “contemplate,” “predict,” “potential,” and variations of such words and similar expressions. Forward-looking statements are not guarantees of future performance and our actual results may differ significantly from the results discussed in the forward-looking statements. Factors that might cause such differences include, but are not limited to, those discussed in the subsection entitled “Item 1A. Risk Factors” above.

Our Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) is provided in addition to the accompanying consolidated financial statements and notes to assist readers in understanding our results of operations, financial condition and cash flows. Our MD&A is organized as follows:

Our Company

We are a leading provider of data storage technology and solutions. Our principal products are hard disk drives, commonly referred to as disk drives, hard drives or HDDs. In addition to HDDs, we produce a broad range of data storage products including solid state drives (“SSDs”), solid state hybrid drives (“SSHDs”) and storage subsystems.

Hard disk drives are devices that store digitally encoded data on rapidly rotating disks with magnetic surfaces. Disk drives continue to be the primary medium of mass data storage due to their performance attributes, high quality and cost effectiveness. Complementing existing data center storage architecture, solid-state storage devices use integrated circuit assemblies as memory to store data, and most SSDs use NAND flash memory. In addition to HDDs and SSDs, SSHDs combine the features of SSDs and HDDs in the same unit, containing a high capacity hard disk drive and a smaller SSD acting as a cache to improve performance of frequently accessed data.

Our HDD products are designed for mission critical and nearline applications in enterprise servers and storage systems; edge compute/client compute applications, where our products are designed primarily for desktop and mobile computing; and edge non-compute/client non-compute applications, where our products are designed for a wide variety of end user devices such as portable external storage systems, surveillance systems, digital video recorders (“DVRs”), network-attached storage

Seagate Technology public limited company | 2018 Form 10-K | 39

(“NAS”) and gaming consoles. Our SSD products mainly include serial attached SCSI (“SAS”) and Non-Volatile Memory Express (“NVMe”) SSDs.

Our cloud systems and solutions portfolio includes modular original equipment manufacturer (“OEM”) storage systems and scale-out storage servers.

Business Overview

Our industry is characterized by several trends and factors that have a material impact on our strategic planning, financial condition and results of operations.

Demand for Data Storage

The International Data Corporation (“IDC”) forecasted in its 2017 Data Age 2025 study that the global datasphere will grow to 163 zettabytes by 2025. According to IDC, we are fast approaching a new era of the data age, which we expect will have a positive impact on storage demand. We believe that the continued advancement of the cloud, the further development of edge computing, the global proliferation of mobile devices, the evolution of the Internet of Things (“IoT”), the increasing use of video surveillance, the evolution of consumer electronic devices, and the enterprise use of big data analytics are driving the growth of digital content. Factors contributing to the growth of digital content include:

As a result of these factors, we anticipate that the nature and volume of content being created will require greater storage, which is more efficiently and economically facilitated by higher capacity storage devices in order to store, manage, distribute, analyze and backup such content. We expect this to support the growth in demand for data storage solutions in developed and emerging economies.

In addition, the economics of storage infrastructure are also evolving with the utilization of public and private hyper-scale storage and open-source solutions reducing the total cost of ownership of storage while increasing the speed and efficiency with which customers can leverage massive computing and storage devices. Accordingly, we expect these trends will continue to create significant demand for data storage solutions going forward.

Demand Trends

We believe that continued growth in digital content requires increasingly higher storage capacity in order to store, aggregate, host, distribute, analyze, manage, protect, backup and use such content. We also believe that as architectures evolve to serve the growing commercial and consumer user base throughout the world, the storage solutions will evolve as well.

We expect increased data creation will lead to the expansion of the need for storage in the form of both HDDs and SSDs. While the advance of solid state technology in many end markets is expected to increase, we believe that in the foreseeable

Seagate Technology public limited company | 2018 Form 10-K | 40

future, cloud, traditional enterprise, client and consumer markets that require high-capacity storage solutions will be best served by hard disk drives due to their ability to deliver the most cost effective, reliable and energy efficient mass storage devices. We also believe that as hard disk drive capacities continue to increase, a focus exclusively on unit demand does not reflect the increase in demand for exabytes. This has resulted in demand for fewer units, but with higher average capacity per drive.

Industry Supply Balance

From time to time, the storage industry has experienced periods of imbalance between supply and demand. To the extent that the storage industry builds or maintains capacity based on expectations of demand that do not materialize, price erosion may become more pronounced. Conversely, during periods where demand exceeds supply, price erosion is generally muted.

Price Erosion

Historically, our industry has been characterized by price declines for disk drive products with comparable capacity, performance and feature sets (“like-for-like products”). Price declines for like-for-like products (“price erosion”) tend to be more pronounced during periods of:

Disk drive manufacturers typically attempt to offset price erosion with an improved mix of disk drive products characterized by higher capacity, better performance and additional feature sets and product cost reductions.

We believe the HDD industry experienced modest price erosion in fiscal years 2016, 2017 and 2018.

Product Life Cycles and Changing Technology

Success in our industry has been dependent to a large extent on the ability to balance the introduction and transition of new products with time-to-volume, performance, capacity and quality metrics at a competitive price, level of service and support that our customers expect. Generally, the drive manufacturer that introduces a new product first benefits from improved product mix, favorable profit margins and less pricing pressure until comparable products are introduced. Changing technology also necessitates on-going investments in research and development, which may be difficult to recover due to rapid product life cycles and economic declines. Further, there is a continued need to successfully execute product transitions and new product introductions, as factors such as quality, reliability and manufacturing yields continue to be of significant competitive importance.

Seasonality

The disk drive industry traditionally experiences seasonal variability in demand with higher levels of demand in the second half of the calendar year. This seasonality is driven by consumer spending in the back-to-school season from late summer to fall and the traditional holiday shopping season from fall to winter. Beyond traditional seasonality, variability of sales can be related to IT spending or a reflection of more cyclical demand from CSPs based on the timing of procurement, deployment and market supply and demand balance of other components such as NAND and DRAM.

Fiscal Year 2018 Summary

During fiscal year 2018, we shipped 338 exabytes of HDD storage capacity. We generated revenue of $11.2 billion and gross margins of 30% and our operating cash flow was $2.1 billion. We invested $1.3 billion in non-convertible preferred stock of K.K. Pangea for the acquisition of Toshiba Memory Corporation with a consortium of investors led by Bain Capital Private Equity. We paid $726 million in dividends, repurchased approximately 10 million of our ordinary shares for $361 million and paid $214 million for the repurchase of certain of our outstanding debt.

Seagate Technology public limited company | 2018 Form 10-K | 41

Results of Operations

We list in the tables below summarized information from our Consolidated Statements of Operations by dollar amounts and as a percentage of revenue:

Seagate Technology public limited company | 2018 Form 10-K | 42

The following table summarizes HDD information regarding average drive selling prices (“ASPs”), exabytes shipped, and revenues by channel and geography:

Fiscal Year 2018 Compared to Fiscal Year 2017

Revenue

Revenue in fiscal year 2018 increased approximately 4% or $0.4 billion, from fiscal year 2017, as a result of an increase in exabytes shipped driven primarily by higher demand for our high capacity HDD product portfolio, partially offset by price erosion.

Cost of Revenue and Gross Margin

For fiscal year 2018, gross margin as a percentage of revenue increased by 100 basis points compared to the prior fiscal year due to favorable product mix and improved factory utilization as a result of higher demand for our high capacity HDD product portfolio, partially offset by price erosion.

Seagate Technology public limited company | 2018 Form 10-K | 43

Operating Expenses

Product Development Expense. Product development expenses for fiscal year 2018 decreased by $206 million from fiscal year 2017 primarily due to a $97 million decrease in salaries and related benefits as a result of the restructuring of our workforce in prior periods, an $83 million decrease due to related operational efficiencies and a $26 million decrease due to impairment charges related to the closure of our Korea design center in fiscal year 2017 that did not recur in fiscal year 2018.

Marketing and Administrative Expense. Marketing and administrative expenses for fiscal year 2018 decreased by $44 million from fiscal year 2017 primarily due to a $54 million decrease in salaries and related benefits as a result of the restructuring of our workforce in prior periods, partially offset by an increase in other general expenses.

Amortization of Intangibles. Amortization of intangibles for fiscal year 2018 decreased by $51 million, as compared to fiscal year 2017, due to certain intangible assets reaching the end of their useful life.

Restructuring and Other, net. Restructuring and other, net for fiscal year 2018 was comprised primarily of restructuring charges recorded during the September 2017 quarter and December 2017 quarter to reduce our workforce by approximately 1,100 employees. Restructuring and other, net also included a gain of $25 million from the sale of certain properties previously classified as held for sale.

Restructuring and other, net for fiscal year 2017 was comprised of restructuring charges recorded during the September 2016 quarter and March 2017 quarter to reduce our workforce by approximately 6,800 employees, as we continue to consolidate our global footprint across Asia, EMEA and the Americas.

Other expense, net

Other expense, net for fiscal year 2018 decreased by $23 million, as compared to fiscal year 2017 due to a $26 million increase in interest income primarily driven by higher interest rates, a $9 million net decrease in losses related to strategic investments and a $6 million net decrease in losses due to favorable changes in foreign currency exchange rates, partially offset by an $18 million net increase in interest expense due to the issuance of $1.25 billion of Senior Notes in fiscal year 2017 and reduced by the subsequent repurchase of certain debts.

Income Taxes

Seagate Technology public limited company | 2018 Form 10-K | 44

We recorded an income tax provision of $236 million for fiscal year 2018 compared to an income tax provision of $43 million for fiscal year 2017. Our fiscal year 2018 income tax provision included approximately $204 million of tax expense associated with the revaluation of U.S. deferred tax assets as a result of the enactment of the Tax Act on December 22, 2017, offset by the reversal of previously recorded unrecognized tax benefits of $7 million, and certain non-recurring items. Our fiscal year 2017 income tax provision included approximately $2 million of net tax expense associated with various non-recurring items.

Our Irish tax resident parent holding company owns various U.S. and non-U.S. subsidiaries that operate in multiple non-Irish income tax jurisdictions. Our worldwide operating income is either subject to varying rates of income tax or is exempt from income tax due to tax incentive programs we operate under in Malaysia, Singapore and Thailand. These tax incentives are scheduled to expire in whole or in part at various dates through 2027.

Our income tax provision recorded for fiscal year 2018 differed from the provision for income taxes that would be derived by applying the Irish statutory rate of 25% to income before income taxes, primarily due to the net effect of (i) tax benefits related to non-U.S. earnings generated in jurisdictions that are subject to tax incentive programs and are considered indefinitely reinvested outside of Ireland, and (ii) a reduction in the net U.S. deferred tax assets associated with revaluation to a lower U.S. tax rate. Our income tax provision recorded for fiscal year 2017 differed from the provision for income taxes that would be derived by applying the Irish statutory rate of 25% to income before income taxes, primarily due to the net effect of (i) tax benefits related to non-U.S. earnings generated in jurisdictions that are subject to tax incentive programs and are considered indefinitely reinvested outside of Ireland, (ii) a decrease in valuation allowance for certain deferred tax assets, and (iii) permanent differences.

Based on our non-U.S. ownership structure and subject to (i) potential future increases in our valuation allowance for deferred tax assets; and (ii) a future change in our intention to indefinitely reinvest earnings from our subsidiaries outside of Ireland, we anticipate that our effective tax rate in future periods will generally be less than the Irish statutory rate.

At June 29, 2018, our deferred tax asset valuation allowance was approximately $1.2 billion.

At June 29, 2018, we had net deferred tax assets of $410 million. The realization of most of these deferred tax assets is primarily dependent on our ability to generate sufficient U.S. and certain non-U.S. taxable income in future periods. Although realization is not assured, we believe that it is more likely than not that these deferred tax assets will be realized. The amount of deferred tax assets considered realizable, however, may increase or decrease in subsequent periods when we re-evaluate the underlying basis for our estimates of future U.S. and certain non-U.S. taxable income.

As of June 29, 2018, approximately $501 million and $99 million of our total U.S. net operating loss and tax credit carry- forwards, respectively, are subject to annual limitations from $1 million to $45 million pursuant to U.S. tax law.

We are required to file U.S. federal, U.S. state, and non-U.S. income tax returns. We are no longer subject to tax examination of U.S. federal income tax returns for years prior to fiscal year 2015. With respect to U.S. state and non-U.S. income tax returns, we are generally no longer subject to tax examination for years ending prior to fiscal year 2007.

On December 22, 2017, the Tax Act was enacted into law in the United States. The Tax Act significantly revises U.S. corporate income tax law by, among other things, lowering U.S. corporate income tax rates from 35% to 21%, implementing a territorial tax system, and imposing a one-time transition tax on deemed repatriated earnings of non-U.S. subsidiaries.

Pursuant to SEC Staff Accounting Bulletin (“SAB”) 118 (regarding the application of ASC 740 associated with the enactment of the Tax Act), we recorded an adjusted tax expense of approximately $204 million for fiscal year 2018, to re-measure our net U.S. deferred tax assets at the newly enacted 21% income tax rate. This tax expense increased our effective tax rate by approximately 14%. We also do not expect the one-time transition tax to have a material impact on our consolidated financial statements due to an overall accumulated earnings deficit in our non-U.S. subsidiaries for which the transition tax applies. We have considered SAB 118 and believe the accounting under ASC 740 for the change to the U.S. statutory tax rate to our deferred tax balances and the one-time transition tax under the Tax Act is complete and appropriately reflected in the financial statements during fiscal year 2018.

For all other provisions relating to the Tax Act, we continue to evaluate the impact of the Tax Act’s various highly complex domestic and international provisions. The other U.S. tax changes, including limitations on various business deductions such

Seagate Technology public limited company | 2018 Form 10-K | 45

as executive compensation under Internal Revenue Code §162(m), are not expected to impact our tax expense in the short-term due to our large net operating loss and 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 generally effective in tax years beginning after December 31, 2017. These provisions are not expected to have a material impact on our consolidated financial statements. However, these preliminary assessments and analyses are provisional and are subject to change as additional interpretive guidance is issued. We will complete our analysis within fiscal year 2019, which is consistent with the guidance provided in SAB 118.

Fiscal Year 2017 Compared to Fiscal Year 2016

Revenue

Revenue in fiscal year 2017 decreased approximately 3% or $0.4 billion, from fiscal year 2016, as a result of price erosion partially offset by an increase in exabytes shipped.

Cost of Revenue and Gross Margin

For fiscal year 2017, gross margin as a percentage of revenue increased by 600 basis points compared to the prior fiscal year due to a favorable product mix and improved factory utilization resulting from cost savings due to our ongoing workforce reductions and manufacturing consolidation activities, partially offset by price erosion.

Operating Expenses