10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

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

For the fiscal year ended December 31, 2019

OR

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

Commission File Number 001-37824

IMPINJ, INC.

(Exact name of Registrant as specified in its charter)

Delaware	91-2041398
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
400 Fairview Avenue North, Suite 1200, Seattle, Washington	98109
(Address of principal executive offices)	(Zip Code)

(206) 517-5300

(Registrant’s telephone number, including area code)

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

Common Stock, $0.001 par value per share (Title of each class) PI (Trading Symbol) The Nasdaq Global Select Market (Name of each exchange on which registered)

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 15(d) of the Act. 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 every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☑ No ☐

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

Large accelerated filer	☐	Accelerated filer	☑
Non-accelerated filer	☐	Smaller reporting company	☐
Emerging growth company	☑

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 Act). 

Yes ☐ No ☑

As of June 30, 2019, the last business day of the Registrant’s most recently completed second fiscal quarter, the aggregate market value of the Registrant’s common stock held by non-affiliates based upon the closing price of such shares on The Nasdaq Global Market on such date was $433.5 million.

As of January 31, 2020, 22,280,132 of shares of common stock were outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

The information required by Part III of this report, to the extent not set forth herein, is incorporated in this report by reference to the registrant’s definitive proxy statement relating to its 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2019.

Table of Contents

		Page
	Note Regarding Forward-Looking statements	3
PART I
Item 1.	Business	4
Item 1A.	Risk Factors	12
Item 1B.	Unresolved Staff Comments	45
Item 2.	Properties	45
Item 3.	Legal Proceedings	45
Item 4.	Mine Safety Disclosures	45
PART II
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	46
Item 6.	Selected Financial Data	48
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	49
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	65
Item 8.	Financial Statements and Supplementary Data	66
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	96
Item 9A.	Controls and Procedures	96
Item 9B.	Other Information	96
PART III
Item 10.	Directors, Executive Officers and Corporate Governance	97
Item 11.	Executive Compensation	97
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	97
Item 13.	Certain Relationships and Related Transactions, and Director Independence	97
Item 14.	Principal Accounting Fees and Services	97
PART IV
Item 15.	Exhibits, Financial Statement Schedules	98
Item 16.	Form 10-K Summary	101

As used in this report, the terms “Impinj,” “the Company,” “we,” “us” and “our” refer to Impinj, Inc., unless the context indicates otherwise.

NOTE REGARDING FORWARD-LOOKING STATEMENTS

This report contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Statements containing words such as “may,” “believe,” “anticipate,” “expect,” “intend,” “plan,” “project,” “projections,” “business outlook,” “estimate,” or similar expressions constitute forward-looking statements. You should read these statements carefully because they discuss future expectations, contain projections of future results of operations or financial condition or state other “forward-looking” information. These statements relate to our future plans, objectives, expectations, intentions and financial performance and the assumptions that underlie these statements. They include, but are not limited to, statements about:

• our market opportunity; the adoption of RAIN RFID technology and solutions; our ability to compete effectively against competitors and competing technologies; and our market share and technology leadership;

• our future financial performance, including our average selling prices and gross margins; and the dependency of our future financial performance on future macroeconomic conditions;

• the performance of third parties on which we rely for product development, manufacturing, assembly and testing; and our relationship with other third parties on which we rely for product distribution, sales integration and deployment;

• our ability to adequately protect our intellectual property; the regulatory regime for our products and services; and

• our participation in standards-setting and other industry consortia.

Our actual results may differ materially from those contained in or implied by any forward-looking statements. Factors that could cause or contribute to these differences include those discussed below and elsewhere in this report, including those factors discussed in Part I, Item 1A (Risk Factors).

In light of the significant uncertainties and risks inherent in these forward-looking statements, you should not regard these statements as a representation or warranty by us or anyone else that we will achieve our objectives and plans in any specified time frame, or at all, or as predictions of future events. Moreover, neither we nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements. We undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

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PART I

Item 1. Business

Overview

Our vision is digital life for everyday items. We are driving a future in which everyday physical items are wirelessly connected to digital counterparts, digital twins, in the cloud, and in which businesses and people engage with those everyday physical items via their digital twins. Our mission is to deliver a platform that powers that item-to-cloud connectivity and to enable developers to innovate Internet-of-Things, or IoT, applications on our platform. Today, we deliver the identity, location and authenticity of billions of physical items; we believe our future is delivering the identity, location and authenticity of trillions of everyday items and enabling those cloud-based digital twins, each storing an individual item’s ownership, history and links, and enabling ubiquitous access to them. We believe the item-to-cloud connectivity we will deliver will enhance businesses efficiencies and commerce and, ultimately, improve peoples’ lives.

Opportunity

Our platform connects individual items, capturing and delivering data about each item from manufacturing, through distribution to sale. We and our channel partners connect those items via a miniature radio chip embedded in the item or in its packaging, reading and delivering the item’s unique identity, location and authenticity to business and consumer applications. To date, we have enabled connectivity to more than 30 billion items, enabling retailers, hospitals, airlines, automotive manufacturers, logistics providers, shippers and business in many other industries to derive timely business value from those connected items. We believe our opportunity is to ultimately connect trillions of everyday items, and to deliver valuable information about those items not just to businesses, but also to everyday people, extending and delivering an item’s digital life to the person that buys and owns the item.

Our platform connects everyday items using RAIN, a radio-frequency identification, or RFID, technology we pioneered. We spearheaded development of the RAIN radio standard, lobbied governments to allocate frequency spectrum and cofounded the RAIN Industry Alliance which today has more than 160-member companies. Today, the RAIN industry uses the RAIN radio standard nearly exclusively, has access to radio spectrum freely available in 78 countries encompassing roughly 96.5% of the world’s GDP and has connected tens of billions of items. We believe RAIN’s core capabilities – unique identifiers for individual items, battery-free operation, 30-foot range, not line-of-sight readability, 1,000 reads per second, low cost, essentially unlimited life and available cryptographic authentication – position RAIN to be the leading item-to-cloud connectivity technology for the IoT.

RAIN market adoption has historically been slower than anticipated or forecasted by us and industry sources. For additional information related to RAIN market adoption, please see the section of this report captioned “Risk Factors.”

Impinj Platform

Our platform comprises three layers: (1) endpoint integrated circuits, or ICs, (2) connectivity and (3) software that together deliver item data to business and consumer applications. We link the layers of our platform to deliver advanced capabilities and performance that surpasses mix-and-match solutions built from competitor products. Within each layer we sell one or more product families.

Endpoint ICs

Our endpoint IC product family comprises miniature radios-on-a-chip that attach-to and uniquely identify their host items. Each IC includes a number to identify a host item and may also include features such as user data storage, security, authentication, loss prevention, privacy protection and value-added Impinj custom features, all accessible by our platform. Our endpoint ICs power themselves from a reader’s radio waves so they do not need a battery, can wirelessly connect almost any item, are readable at distances up to 30 feet without line-of-sight, yet sell for pennies.

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Ouroriginal equipment manufacturing, or OEM, partners typically attach each endpoint IC to a thin printed or etched antenna on a paper or Mylar backing, then cover the composite inlay with a paper face to form a tag. End users attach the tag to items in markets including retail, healthcare, automotive, supply chain and logistics, industrial and manufacturing, consumer experience, food, datacenter, travel and banking. In some more-recent applications, rather than attaching a tag to an item, end users may instead embed the inlay directly into the item, for example by sewing an inlay into a garment’s care label. Regardless of the method by which our partners embed an endpoint IC into a host item, we refer to an IC and its host item as an endpoint.

When a consumer purchases a retail item, a store or supplier typically procures another item to sell, including another endpoint IC. We believe endpoint ICs are the first market for consumable silicon and are a recurring revenue source for us.

Connectivity

Our connectivity product family comprises reader ICs, reader modules, readers and gateways that wirelessly identify, locate, and authenticate items. They wirelessly provide power to, and communicate bidirectionally with, endpoint ICs on those items, identifying and locating up to 1,000 items per second. They also read, write, authenticate or otherwise engage endpoint ICs on items. End users have deployed our connectivity products in applications ranging from retail inventory-taking to automated fuel filling to shipping-container tracking to airport luggage handling.

Our family of reader ICs and reader modules, the latter combining our reader ICs with peripheral circuitry in an easy-to-use format, are designed to be used in partner readers. We sell our reader ICs and reader modules to OEM and original design manufacturing, or ODM, partners that use them in mobile or handheld readers, fixed readers, gateway and RAIN-enabled appliances. We offer easy-to-use APIs, development environments, sample code, drivers and libraries. We sell our reader ICs and reader modules for tens of dollars.

Our reader product family comprises high-performing finished products. Our readers are easy to deploy and use, can be powered via power-over-Ethernet, or PoE, and are certified for operation in more than 40 countries. We sell our readers through an established channel of distributors, system integrators, or SIs, value-added resellers, or VARs, and solution providers. Our readers sell for hundreds of dollars.

Our gateway product family integrates our readers with beamforming antennas to electrically steer a radio beam like a searchlight, locating and tracking items. Their always-on, autonomous operation delivers timely item data without ongoing labor costs. Our portal gateways, branded xPortal and xSpan, scan doorways or hallways such as front-to-back store transitions, entryways and exits. Our array gateway, branded xArray, scans floor spaces such as in a store, manufacturing facility or a hospital room. Our gateways are easy to deploy and use, can be powered via PoE and are certified for operation in more than 40 countries. Our gateways sell for thousands of dollars.

Software

Our primary software offering, ItemSense, is system software for our platform. It transforms item-level RAIN data into actionable information, enabling analytics and insights about items businesses manufacture, transport and sell. ItemSense’s capabilities include enterprise-class RAIN deployment management; software-defined algorithms for transition detection; and easy-to-use APIs that enable application developers to build powerful IoT solutions on our platform. We position ItemSense as a key enabler of enterprise-wide deployments of our readers and gateways.

Industry Use Cases

The following use cases are representative of actual RAIN deployments we serve today.

Retail

Retailers, both traditional “brick-and-mortar” and online, consume billions of tags each year to obtain real-time data about products they manufacture, transport and sell. Retailers can obtain these benefits using our platform:

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• Inventory Accuracy and Visibility. Our platform delivers accurate and timely data about a retailer’s inventory. Accurate inventory data can reduce overstocks and understocks, eliminate searching and avoid confusion, thereby allowing staff to focus on customers. It also enables retailers to confidently sell down to the last item in stock.

• Loss Identification and Prevention. The same platform capabilities that give retailers inventory visibility can also improve loss prevention. With our platform, retailers can be alerted when items enter or leave a store. Loss identification and prevention data can help retailers make smart decisions to protect their inventory and avoid lost sales due to missing inventory.

• Omnichannel Operations. Omnichannel retailing is about selling products when, where and how customers want to buy—but retailers can’t sell what they can’t see. The cornerstone of a successful omnichannel operation is real-time inventory visibility that provides accurate item information in stores, warehouses and fulfillment centers. With real-time inventory visibility delivered by our platform, omnichannel retailers can efficiently sell inventory across all their retail locations.

• Enhanced Shopper Experiences. Capturing customers’ attention as they step into a store with interactive item-based experiences helps sell items. Our platform enables in-store applications such as digital signs, magic mirrors and self-checkout kiosks. These interactive applications grab customers’ attention, provide information during the buying decision and keep shoppers engaged in the store.

Supply Chain and Logistics

The supply chain and logistics industry is increasingly demanding smarter, simpler and more automated operations. Using the Impinj platform they can obtain these benefits:

• Shipment Verification. Our platform provides real-time data about items passing through dock doors to the systems that run shipping and receiving, enabling logistics companies to reduce mistakes, automate processes and drive operational efficiencies.

• Returnable Transit Item (RTI) Tracking. By tagging RTI containers that travel in and out of warehouses, our platform can reduce RTI loss and ensures a business has the RTI containers it needs to satisfy its customers.

• Asset Management. Our platform enables automated check-in and -out procedures, maintenance alerts and location monitoring, thereby improving efficiencies, reducing loss and complying with maintenance schedules.

Other Industries

Other industries are also deriving business value from RAIN. A few examples of deployments that use part or all of the Impinj platform include:

• Aviation. RAIN-enabled luggage tags provide passengers the real-time location of their checked bags and reduce lost bags.

• Automotive. Car manufacturers use RAIN to track components to ensure proper vehicle assembly, reduce labor costs and improve operations.

• Healthcare. Hospitals use our platform for tracking assets and managing patient and clinician workflows. Partner solutions built on our platform include RAIN-enabled medical cabinets, refrigerators and medical-kit verification.

• Industrial and Manufacturing. Manufacturers use RAIN to track assets and tools, improving efficiencies by reducing errors and increasing calibration compliance. Industrial companies track components during manufacturing and shipping to increase productivity and reduce shipping errors.

• Sports. Marathons and other foot races track runners via RAIN endpoint ICs in race bibs. Golf venues score participants’ shots via our RAIN endpoint ICs inside golf balls.

• Food. Coca-Cola uses our reader modules for syrup tracking and replenishment in its Freestyle soda fountains.

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• Datacenters. Datacenters use our platform for asset tracking. Electronics manufacturers embed our RAIN endpoint ICs into electronic devices for processor-secured storage.

• Travel. Driver licenses in some states in the United States include our endpoint ICs to speed border crossings. Fueling stations use vehicle windshield tags to enable automatic and cashless fueling.

• Banking. Banks use our endpoint ICs for money bundles and to track information-technology assets.

• Linen and Uniform Tracking. Laundry providers embed washable tags into their linens and uniforms for automatic tracking, to ensure the items don’t go astray, reduce safety stock and keep supply matched to customer needs.

Competitive Advantages

We lead the RAIN RFID market in connecting and delivering information about items. We believe we can maintain and extend our leadership position as the market grows by leveraging our competitive strengths, including:

• Comprehensive Platform. Impinj products provide enhanced features and functionalities, and integrate more tightly together, in ways that we believe are unequaled by “mix-and-match” systems cobbled-together from competitors’ components, thereby improving performance, reliability and ease-of-use.

• Market Leadership. We believe we are the only company with an integrated RAIN platform, and believe we have leading market share in endpoint ICs, reader ICs and stationary readers.

• Broad Partner Ecosystem. Our worldwide partner ecosystem comprising hundreds of distributors, SIs, VARs, software solution partners, inlay and tag OEMs and ODMs gives us market reach, penetration and scalability we believe few, if any, of our competitors enjoy.

• Technology Leadership. Our chief executive officer is a recognized industry thought leader. He is a director of the RAIN Industry Alliance and was editor for the RAIN radio standard. Our intense focus on RAIN has enabled us to be first-to-market with innovative, high-performing and high-quality products. As of December 31, 2019, our intellectual property portfolio included 261 issued and allowed U.S. patents, four issued and allowed international patents, 29 pending U.S. patent applications and one pending international patent application.

• Trusted Brand. We believe our industry leadership, name recognition and reputation for innovative, high-performing and high-quality products have significantly contributed to our leading market position. We believe our brand is unmatched in the industry, helping us sell products and maintain our market leadership.

Growth Strategies

To further our mission of connecting everyday items, we plan to focus on the following strategic areas:

• Continue Investing in Our Platform. We have made significant investments and plan to continue investing in our platform’s products; software/hardware linkages; algorithms; capabilities for loss prevention, shipment verification and brand protection; and cost reductions.

• Drive End-User Adoption. We plan to deepen our platform integration with software partners, broaden our partner ecosystem and expand our offerings, focused on driving end-user adoption.

• Expand within our Customer Base by Cross-Selling and Up-Selling Our Platform. We will seek additional revenue from existing end users of our platform by helping them expand their deployment scope and add new use cases. For example, typical retail RAIN deployments start by tagging primarily apparel items and taking inventory using handheld readers. We see opportunities not only to expand tagging to housewares, appliances, cosmetics and eventually all items in a store, but also to deliver enhanced use cases such as RAIN-based loss prevention, frictionless self-checkout and more.

• Enable Ubiquitous Reading. We plan to invest in next-generation reader ICs to improve functionality, reduce costs and make Impinj-based readers ubiquitous in industrial and consumer devices.

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Sales and Marketing

We have worldwide sales team members with expertise in endpoint ICs, reader ICs, reader modules and systems solutions. Our sales force leverages a global ecosystem of distribution, SI, VAR and ISV partners. We derive most of our revenue from endpoint IC and connectivity product sales. We primarily sell our software as an enabler for system sales and its revenue is not material. We sell our products as follows:

• Endpoint ICs directly to inlay and tag OEMs and ODMs. We typically negotiate pricing, volumes and deliveries with these OEMs and ODMs annually, with new pricing effective during the first quarter of the calendar year.

• Reader ICs and reader modules primarily through distribution to reader OEMs and ODMs.

• Readers and gateways primarily to VARs and SIs through distributors and rarely directly to end users.

• Software through distributors, VARs, SIs and other software-solution partners.

We deliver products and systems that are easy for our partner ecosystem to sell and deploy. We engender preference for our platform in all sales engagements, encouraging end users to deploy our multiple products to gain the full benefit of our platform. Our business development, product marketing, technical and systems engineers all actively engage partners and end users. Our communications use web, electronic and channel programs complemented by press initiatives and industry-analyst relationships. Our solutions-marketing and business-development teams work with our ISVs to enable end-user awareness, joint solutions, joint go-to-market selling and sales enablement.

The following table presents total revenue concentrations to Avery Dennison Corporation, or Avery Dennison, Smartrac NV, or Smartrac, Arizon RFID Technology (Yangzhou) Co., LTD, or Arizon, Blue Star, Inc., or Blue Star and a North American Systems customer for the periods presented;

	Year Ended December 31,
	2019			2018			2017
Revenue:
Avery Dennison		19	%		22	%		18	%
North American Systems customer		14		*			*
Smartrac		12			17			14
Arizon	*				10			13
Blue Star	*			*				10
		45	%		49	%		55	%
* Less than 10%

Avery Dennison, Smartrac and Arizon are inlay partners for endpoint IC sales. In November 2019, Avery Dennison announced it was acquiring Smartrac’s Transponder (RAIN inlay) segment in a transaction expected to close in early 2020. This transaction, if consummated, will increase the revenue concentration we derive from endpoint IC sales to Avery Dennison. Blue Star is a reader and gateway distributor.

In 2019, we also generated 14% of total revenue from a North American Systems customer in connection with a project-based deployment of gateways, which we expect to complete in the first quarter of 2020.

We engage end users in collaboration with partners across our ecosystem, usually fulfilling sales through those same partners. In some instances, these end-customer engagements leverage go-to-market relationships with companies who do not sell our products but whose product offerings complement ours. Many of our partners sell multiple of our products or our entire platform.

Manufacturing

We outsource all our product manufacturing to third-party manufacturers that build our products to our specifications. This capital-efficient operating model scales efficiently with volume, allowing us to focus our resources on accelerating development of new products and solutions.

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Taiwan Semiconductor Manufacturing Company Limited, or TSMC, fabricates our endpoint IC wafers in Asia and the United States and has been our sole endpoint IC wafer supplier since 2003. We order endpoint IC wafers on a purchase-order basis and do not have a long-term agreement with TSMC. We test the wafers at our U.S. headquarters and in Asia. We use multiple subcontractors to post-process the wafers, with Stars Microelectronics (Thailand) Public Company Limited, or Stars, our primary subcontractor. We generally engage all our endpoint IC subcontractors on a purchase-order basis.

TowerJazz Ltd., or TowerJazz fabricates our reader IC wafers in the United States and has been our sole reader IC wafer supplier since 2008. We order reader IC wafers on a purchase-order basis and do not have a long-term agreement with TowerJazz. We use subcontractors on a purchase-order basis to package the ICs and test the packaged parts. Stars and Microelectronics Technology Inc., or MTI, manufacture our reader modules. We do not have a long-term manufacturing agreement with either.

Plexus Corp., or Plexus, manufactures our readers in Asia and has been our sole supplier since 2005. Plexus and Western Corporation (acquired by Computrol, Inc.) in the United States have manufactured our gateways since 2013 and 2010, respectively. We order readers and gateways pursuant to non-exclusive purchase agreements that renew automatically each year, subject to each party’s right to terminate upon 180 days’ notice. We engage subcontractors on a purchase-order basis to assemble and test printed circuit boards, to build our reader and gateway enclosures and test our readers and gateways.

Research and Development

We built our company around technology leadership and innovation. We have committed, and plan to continue investing, significant resources to technology and product innovation and development. We achieved our market leadership by innovating, delivering and continuously improving product performance, features, quality and reliability while also reducing costs. In most situations, we strive to lead the market with new innovations, but we sometimes adopt a “fast follower” approach depending on the market situation. As one example, endpoint IC performance typically improves when we migrate the semiconductor processing to more advanced process nodes. We execute these node migrations when the development costs, performance improvements, competitive situation and product cost reductions justify the migration. But external factors, such as the ability of our OEM and ODM partners to process larger wafers can cause us to delay, or even allow our competition to temporarily lead, while we develop advanced products that we introduce when our OEM and ODM partners are ready.

We have assembled a team of skilled engineers and currently perform all research and most of our product development internally. As of December 31, 2019, we had 132 employees in research and development. We regularly review our technology, products and market development opportunities and reallocate our spending and resources accordingly.

Intellectual Property

We protect our technologies by filing patent applications, retaining trade secrets and defending and enforcing our intellectual property rights where appropriate. To date, our intellectual property portfolio includes 261 issued and allowed U.S. patents, four issued and allowed international patents, 29 pending U.S. patent applications and one pending international patent application. The first of our 234 issued utility patents expire in 2022 and the first of our 27 issued design patents expire in 2021. To protect confidential information not otherwise subject to patent protection, we rely on trade secret law and enter into confidentiality agreements with our employees, customers, suppliers and partners.

Because most RAIN product SKUs are used in, or imported into, the United States, and because many of our partners and end users have U.S. operations, we believe U.S. patents hold the most value for our business. Consequently, we have primarily filed U.S. patent applications. We have four issued and allowed international patents. Because our portfolio currently comprises mostly U.S. patents, we have limited ability to assert our intellectual property rights outside the United States.

Although our patents and trade secrets constitute valuable assets, we do not view any one of them as material. Instead, we believe the totality of our patent and trade-secret portfolio creates an advantage for our business.

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We have entered into licensing, broad-scope cross licensing and other agreements authorizing us to use or to operate within the scope of patents and intellectual property owned by third parties. For example, we have licenses to third-party intellectual property that we use in our products. As another example, by participating in developing GS1 EPCglobal protocols, such as the RAIN radio protocol, we agreed to license those of our patents necessarily infringed by the practice of these protocols on a royalty-free basis to other GS1 EPCglobal members, subject to reciprocal royalty-free rights from those members. By participating in developing International Organization for Standardization, or ISO, standards, we agreed to grant to all users worldwide a license to those of our patents necessarily infringed by the practice of several ISO standards, including non-RAIN standards, on reasonable and nondiscriminatory terms, subject to reciprocity.

We own a number of trademarks, develop names for our new products and secure trademark protection for them, including domain name registration, in relevant jurisdictions.

Alliances and Standardization

Our platform connects everyday items using the RAIN RFID technology we pioneered. We spearheaded development of the RAIN radio standard, lobbied governments to allocate frequency spectrum and, along with Google, Intel and Smartrac, cofounded the RAIN Industry Alliance. Our chief executive officer is presently an Alliance Director and was previously the Alliance Chairman. The Alliance is a global organization promoting the universal adoption of RAIN technology and solutions with more than 170 members as of December 31, 2019. The name “RAIN” connotes ubiquity and a close link to cloud data. Today, the RAIN RFID industry has access to radio spectrum freely available in 78 countries encompassing roughly 96.5% of the world’s GDP and has connected tens of billions of items. We believe RAIN’s core capabilities – unique identifiers for individual items, battery-free operation, 30-foot range, not line-of-sight readability, 1,000 reads per second, low cost, essentially unlimited life and available cryptographic authentication – position RAIN to be the leading item-to-cloud connectivity technology for the IoT.

We, our customers, partners and competitors developed the RAIN radio protocol, whose technical name is EPC™ Radio-Frequency Identity Protocols Generation-2 UHF RFID (standardized as ISO/IEC 18000-63 and known colloquially as Gen2) in 2004, with us as the editor. Our community delivered a backwards-compatible update in 2013, again with us as the editor. Our industry uses the RAIN radio protocol nearly exclusively.

By participating in GS1 EPCglobal, which produced Gen2, and ISO, which ratified 18000-63, as well as in other standards bodies, we agreed to license certain patents as described in the section captioned “—Intellectual Property.”

Government Regulations

Government regulations require us to certify our readers and gateways in jurisdictions where they operate. For example, we certify our readers and gateways to Federal Communications Commission regulations to operate in the United States and its territories. Our readers and gateways are certified for operation in more than 40 countries worldwide including the United States, Canada, Mexico, China, Japan, South Korea and all of the European Union.

Competition

We believe we are the only company in our industry with a platform spanning endpoint ICs, connectivity and software. Individual competitors compete with us in some, but not all, of our platform’s layers. Our principal competition in our platform layers include:

• Endpoint ICs. NXP B.V., or NXP, and Alien Technology Corporation, or Alien.

• Reader ICs. STMicroelectronics N.V., or ST, Phychips Inc, Zhikun Semiconductor Co. Ltd, or Iotelligent and MagicRF.

• Readers and Gateways. Alien, which also purchases our reader ICs, and Zebra Technologies Corporation, or Zebra.

• Software. Zebra and Mojix, Inc.

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The market for our platform and products is relatively new and highly competitive. We believe competition will increase as the market grows and RAIN technology continues to advance. New entrants could come into our market at any time, creating additional competition in the future. The competitive factors that impact our platform and product sales include:

• portfolio, performance, features, lead times, reliability and price;

• support, ease of use and availability of reference designs;

• development tools and API availability (except in the endpoint IC market);

• integration and certification with end-user applications; and

• company reputation.

Although we believe we compete favorably on the above factors, our future competitiveness will depend upon our ability to design, develop and deliver compelling solutions. We occasionally experience competitive pressures due to prevailing exchange rates as our product pricing is denominated in U.S. dollars. In addition, our competitive position depends on our ability to continue to attract and retain talent while protecting our intellectual property. For additional information on the risks associated with our business, see “Risk Factors.”

Employees and Culture

As of December 31, 2019, we had 272 employees. None of our employees are represented by a labor union, and we believe our employee relations are excellent.

Our corporate culture is captured by a set of beliefs centered around respect, collaboration, accountability and thinking big. We believe our culture is essential to the health and success of our business and aligns our employees around a set of principles, behaviors and actions that foster inclusion, passion and commitment.

Corporate Information

We were incorporated in Delaware in April 2000. Our principal executive office is located at 400 Fairview Avenue North, Suite 1200, Seattle, Washington 98109. Our telephone number is (206) 517-5300. Our website is www.impinj.com. Information contained in, or that can be accessed through, our website is not a part of, and is not incorporated into, this report.

Where You Can Find More Information

Our filings with the Securities and Exchange Commission, or SEC, including our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports, are available on our website at www.investor.impinj.com, free of charge, as soon as reasonably practicable after the electronic filing of these reports with the SEC. The information contained on our website is not a part of this report or any other document we file with the SEC.

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Item 1A. Risk Factors

You should carefully consider the following risk factors, in addition to the other information contained in this report, including the section of this report captioned “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our financial statements and related notes. If any of the events described in the following risk factors and the risks described elsewhere in this report occurs, our business, operating results and financial condition could be seriously harmed. This report also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward-looking statements as a result of factors that are described below and elsewhere in this report.

Risks Relating to Our Business and Industry

The extent of RAIN market adoption is uncertain. If RAIN market adoption does not continue to develop, or develops more slowly than we expect, our business will suffer.

The RAIN market is relatively new and, to a large extent, unproven. RAIN technology and product adoption, including that of Impinj’s products and platform, will depend on numerous factors, including:

• whether end users embrace the benefits we believe RAIN offers, and if so whether RAIN will achieve and sustain high demand and marketadoption;

• whether end users perceive that the benefits of RAIN adoption outweigh the cost and time to install, replace or modify their existing systems and processes;and

• whether the technological capabilities of RAIN products and applications meet endusers’ current or anticipatedneeds.

The adoption of RAIN technology and products has historically been slower than anticipated or forecasted by us and industry sources. Our industry has also experienced periods of accelerated adoption that were not sustained. For example, RAIN adoption accelerated rapidly in 2016, which resulted in longer lead times. We invested in endpoint IC inventory both to meet forecasted demand and to enhance our ability to deliver in the event of another unexpected demand surge. However, in the second half of 2017 and early 2018, the growth rate in endpoint IC shipments decreased relative to 2016, which we believe was due to multiple factors including, but not limited to, delays in new deployments and in planned expansions at several large retailers.

The pace of RAIN adoption will turn on prospective customers’ knowledge of our products and our ability to convey to them the value of using RAIN products or our platform over those incorporating other technologies. End users and our prospective customers may not be familiar with our products or RAIN in general, or may use other products and technologies to identify, locate, authenticate, engage, track and prevent loss of their items. Additionally, even if prospective customers are familiar with RAIN, our products or platform, a negative perception of, or experience with, RAIN or a competitor’s RAIN products may deter them from adopting RAIN or our products or platform. Before they adopt RAIN, businesses, government agencies and other organizations may need education on the benefits of using RAIN in their operations, and how they outweigh the costs, including potentially significant costs of modifying or replacing existing systems and processes. These educational efforts may not be successful, and organizations may decide that the costs of adopting RAIN outweigh the benefits or may decide to defer near-term RAIN adoption in favor of a more advanced or comprehensive future deployment. Failure of organizations to adopt RAIN generally, and our products and platform specifically, for any reason will hurt the development of our market and, consequently, impair our business and prospects.

Fluctuations in the adoption of RAIN products and solutions may affect our ability to forecast our future operating results, including revenue, gross margins, cash flows and profitability. Moreover, to ensure adequate inventory supply, we must forecast inventory needs and expenses and place orders sufficiently in advance with our suppliers and contract manufacturers based on our estimates of future product demand. Our failure to accurately forecast demand, particularly when introducing new products, may cause us to experience excess product inventory or shortages for sale.

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If RAIN adoption by retailers does not continue at the rate we expect, our business will be adversely affected.

The retail apparel industry leads RAIN adoption, and retail end users were the largest consumers of our endpoint ICs in 2016, 2017, 2018 and 2019. We believe retail RAIN deployments are a leading indicator of overall RAIN market adoption. If apparel retailers continue adopting RAIN, then we believe adoption in other industries is likely to accelerate. As such, the retail industry is one of our key strategic focus areas.

If retailers or others deploying RAIN fail to realize demonstrable benefits from RAIN or delay or abandon their deployments, overall RAIN market acceptance may be materially and adversely affected. For example, in the second half of 2017 and early 2018, the pace of growth in endpoint IC unit-volume shipments decreased relative to 2016, which we believe was due to multiple factors including, but not limited to, delays in new deployments and in planned expansions at several large retailers. Moreover, retailers that have a primarily physical presence in the marketplace have experienced financial stress in recent periods. Many of these retailers have deployed RAIN to improve competitiveness; however, if they fail to compete effectively, the number of stores they maintain, and thus the scope of their RAIN deployments, may decrease significantly. In addition, uncertainties caused by possible imposition of tariffs may cause retailers to change their supply chain and slow RAIN adoption as a consequence. Any widespread delay, slowdown or failure by retailers or other organizations to implement RAIN-based systems generally, and our products and platform specifically, will materially and adversely affect our business, operating results, financial condition and long-term prospects.

If we are unsuccessful in fostering meaningful adoption of our products and platform by end users other than retailers, our business prospects may be adversely affected.

We expect end users to deploy our platform in sectors beyond retail, including, for example in supply chain and logistics, aviation and automotive. If we fail to make our products and platform an easy-to-deploy, economical solution for use cases in these other sectors, our ability to penetrate them may suffer and our business prospects may be adversely affected.

We have a history of losses and have only achieved profitability intermittently. We cannot be certain that we will increase or sustain profitability in the future.

We have incurred losses since our inception in 2000. While we were profitable between 2013 and 2015, we had a net loss of $23.0 million for the year ended December 31, 2019 and an accumulated deficit of $262.7 million as of December 31, 2019. Our ability to regain or sustain profitability depends on numerous factors, many of which are out of our control, including continued RAIN adoption and maintaining or growing our market share. We expect significant expenditures to support operations, product development and business and headcount expansion in sales, engineering, and marketing and may, for periods of time, choose to invest more in the opportunity in the short term to grow the market and our market share, to reduce costs, to improve our efficiencies or to shorten our supply chain, over a longer term. If we fail to increase our revenue or manage our expenses, or if our short-term investments in growing the market or our market share do not succeed, we may not attain or sustain profitability in the future.

Fluctuations in our quarterly and annual operating results may adversely affect our business, prospects and stock price.

You must consider our business and prospects in light of the risks and difficulties we encounter in the uncertain and rapidly evolving RAIN market. Because this market is new, large and evolving, predicting its growth rate and ultimate size is difficult. The rapidly evolving nature of the markets in which we sell our products, as well as other factors that are beyond our control, reduce our ability to accurately value our future prospects and forecast our quarterly or annual performance.

End users drive demand for our products. Because we sell nearly all our products through channel partners, our ability to determine and forecast end-user demand is limited.

For example, our 2016 endpoint IC sales exceeded both our expectations and those of our industry’s analysts due in large part to several coincident large-scale end-user deployments. However, in part of 2017 and 2018, the pace of growth in endpoint IC unit-volume shipments decreased relative to 2016, which we believe was due to multiple factors including, but not limited to, delays in new deployments and in planned expansions at several large retailers as well as a correction in our endpoint IC channel inventory

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Forecasting end-user demand for other elements of RAIN solutions is also difficult. We rely on our channel partners to integrate our RAIN-based systems products with end-user information systems and this integration has been uneven and unpredictable in scope, timing and implementation. Also, RAIN-based systems in general often involve time-consuming proofs-of-concepts and other time-consuming steps such as designing and implementing new business processes, which make sales of our system products difficult to forecast. Partly as a consequence, in the past, both we and other industry participants have at times overestimated the RAIN market size and growth rates, then failed to meet expectations.

To date, we have had limited success in accurately predicting future sales of our products and platform. Due to shorter lead times for our endpoint ICs in 2018 and 2019 relative to prior years, we are increasingly receiving orders and shipping the ordered products within the same quarter. Shortened lead times decrease our ability to predict both optimal inventory and order volume for a quarter. Additionally, customer orders for readers and gateways are generally weighted toward the end of a quarter. If we do not have adequate reader and gateway supplies to fulfill the orders within a quarter or if we do not accurately predict the sales cycle for reader and gateways, sales of some sizeable transactions might extend into a subsequent quarter. We expect that for the foreseeable future our visibility into future sales, including both volumes and prices, willcontinue to be limited. This poor visibility may cause fluctuations in our operating results, particularly on a quarterly basis, that we are unable to predict as well as failure to achieve our expected operating results.

In addition, if endpoint IC sales (one indicator of market adoption) exceed expectations or if we discount prices to win a particularly large opportunity or in response to competition, our revenue and profitability may be positively affected, but gross margins may be negatively affected depending on product mix for the applicable period. If research analysts or investors perceive such a product mix shift negatively, the trading price of our common stock could be adversely affected.

Numerous other factors, many of which are outside our control, may cause or contribute to significant fluctuations in our quarterly and annual operating results. These fluctuations may make financial planning and forecasting difficult. In addition, these fluctuations may result in unanticipated decreases in our available cash, which could negatively affect our business and prospects. Factors that may contribute to fluctuations in our operating results and revenue include:

• variations in RAIN adoption and deployment delays by end users;

• fluctuations in demand for our products or platform, including by tag manufacturers and other significant customers on which we rely for a substantial portion of our revenue;

• fluctuations in the availability or supply of our products;

• variations in the quality of our products and return rates;

• delays in new-product introductions;

• decreases in selling prices for our products;

• delays in our product-shipment timing, customer or end-user sales or deployment cycles, or work performed under development contracts;

• intellectual property disputes involving us, our customers, end users or other participants in our industry;

• adverse outcomes of litigation or governmental proceedings;

• timing variability in product introductions, enhancements, services, and technologies by us and our competitors and market acceptance of these new or enhanced products, services and technologies;

• unanticipated excess or obsolete inventory as a result of supply-chain mismanagement, new-product introduction, quality issues or otherwise;

• changes in the amount and timing of our operating costs, including those related to the expansion of our business, operations and infrastructure;

• changes in business cycles or seasonal fluctuations that may affect the markets in which we sell;

• changes in industry standards or specifications, or changes in government regulations, relating to RAIN, or to Impinj’s products or platform;

• late, delayed or cancelled payments from our customers; and

• unanticipated impairment of long-lived assets and goodwill.

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A substantial portion of our operating expenses are fixed for the short term, and as a result, fluctuations in revenue or unanticipated expenses can have a material and immediate impact on our profitability. The occurrence of any one of these risks could negatively affect our operating results in any period, which could cause the price of our common stock to decline.

Our market is very competitive. If we fail to compete successfully, our business and operating results will suffer.

We face significant competition from both established and emerging competitors. We believe our principal current competitors are: in endpoint ICs NXP and Alien; in reader ICs ST, Phychips, Iotelligent and MagicRF; in readers and gateways Alien and Zebra; and in software Zebra and Mojix. Our channel partners, including our OEMs, ODMs, distributors, SIs, VARs and software solution partners may choose to compete with us rather than purchase our products, which would not only reduce our customer base but also increase competition in the market, adversely affecting our operating results, business and prospects. Companies in adjacent markets or newly formed companies may decide to enter our market, particularly as RAIN adoptiongrows. Further, the Chinese government has made development of the Chinese semiconductor industry a priority, potentially increasing competition for us globally while possibly restricting our ability to participate in the Chinese market.

Competition for customers is intense. Because the RAIN market is evolving rapidly, winning customer and end-user accounts at an early stage in the development of the market is critical to growing our business. End users that instead use competing products and technologies may face high switching costs, which may affect our and our channel partners’ ability to successfully convert them to our products. Failure to obtain orders from customers and end users, for competitive reasons or otherwise, will materially adversely affect our operating results, business and prospects.

Some of our competitors may devote more resources than we can to the development, promotion, sale and support of their products. Our competitors include companies that have much greater financial, operating, research and development, marketing and other resources than us. These competitors may discount their products to gain market share. In doing so, they could simply accept smaller margins, or they could maintain margins by achieving cost savings through better, more efficient designs or production methods. To gain share, competitors could also bundle near-field communication RFID, or NFC, products with RAIN products, or stationary readers with handheld readers. New competitors could enter the gateway market or develop RAIN platforms or solutions. Larger or more established companies may deliver and directly compete with our products or platform. Smaller companies could launch new products and applications we do not offer and could gain market acceptance quickly. Moreover, consolidation in the RAIN industry could intensify the competitive pressures that we face. Many of our existing and potential competitors may be better positioned than we are to acquire other companies, technologies or products.

Some of our customers have policies requiring diverse supplier bases to enhance competition and maintain multiple RAIN product providers. Consequently, they tend to avoid purchasing exclusively from us or promoting our brand. Our ability to increase order sizes from these customers and maintain or increase our market share is constrained by these policies. In addition, any decline in quality or availability of our products or any increase in the number of suppliers that such a customer uses may decrease demand for our products and adversely affect our operating results, business and prospects

In short, as the RAIN market develops, we will face ever increasing competition from new or newly enhanced products from our existing competitors, or from entirely new competitors in our market. These competitors may have, or may develop, processes or product designs that will enable them to offer more competitive products than ours. Any failure to compete successfully will materially adversely affect our business, prospects, operating results and financial condition.

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Downturns in the industries we serve, particularly retail, may adversely affect our business.

Worldwide economic conditions have exhibited significant fluctuations in the past, and customers remain guarded with respect to market volatility and uncertainty. Consequently, we and our customers have had difficulty accurately forecasting and planning future business activities. Volatile economic conditions could cause our customers or end users to reduce their capital-expense budgets, which could decrease spending for our products resulting in delayed and lengthened deployment, a decrease in sales or a loss of sales opportunities. The retail industry is subject to volatility, especially during uncertain economic conditions. A downturn in the retail industry may disproportionately affect us because retailers comprise a significant portion of the RAIN end users and product volume. We cannot predict the timing, strength or duration of any economic slowdown or recovery, whether global, regional or within specific markets. If the conditions of the general economy or markets in which we operate worsen, our business could be adversely affected.

If we fail to obtain quality products in adequate quantity and in a timely and cost-effective manner, our operating results and growth prospects will be adversely affected.

We do not own or operate manufacturing facilities, and we do not control our manufacturers’ or subcontractors’ ability or willingness to meet our supply requirements. Currently, all our endpoint IC wafers are manufactured by TSMC, and primarily post-processed by our subcontractor Stars; all our reader IC wafers are manufactured by TowerJazz; all our modules are manufactured by Stars and MTI; and all our readers and gateways are manufactured by Plexus or Computrol. We also use subcontractors for post-processing, assembly and testing.

Currently, we do not have long-term supply contracts with TSMC, TowerJazz, MTI, Plexus or Computrol, and neither they nor our subcontractors are required to supply us with products for any specific period or in any specific quantity. Suppliers can allocate production capacity to other companies for any reason and reduce deliveries to us on short notice, negatively affecting our ability to secure enough product for sale.

Some components of our products have longer lead times and we place orders with some of our suppliers five or more months before our anticipated product delivery dates to our customers. We base these orders on our customer-demand forecasts and on an assumed level of production that may prove to be inaccurate. If we inaccurately forecast this customer demand, or if production levels are constrained for any reason, then we may be unable to obtain adequate and cost-effective components, or foundry or assembly capacity to meet our customers’ delivery requirements, or we may accumulate excess inventory or suffer inventory shortages.

For a variety of reasons, manufacturing capacity may not be available when we need it or at reasonable prices, which may result in us not being able to satisfy demand for our products fully or may distort apparent future demand. For example, in 2010 we experienced wafer shortages from TSMC relative to our submitted endpoint IC wafer purchase orders because of high worldwide demand for semiconductor foundry capacity. These shortages adversely affected our ability to meet our customers’ demand and, in some cases, caused customers to cancel orders, qualify alternative suppliers or purchase from our competitors. Semiconductor industry analysts predict high 200mm wafer demand again in 2020. As another example, in mid-2016, as a consequence of rapid growth in endpoint IC demand, we depleted our endpoint IC buffer stock and were temporarily unable to satisfy customer demand, causing some customers to purchase competitive products even as we increased production. In response to similar future shortages, our customers may act similarly or, alternatively, may overbuy our products, which could artificially inflate sales in near-term periods while leading to sales declines in future periods as our customers consume their accumulated inventory. As yet another example, the recent outbreak of the novel coronavirus (COVID-19) has resulted in travel and work restrictions within China and globally, and in disruptions in our ability to test, produce distribute and sell products. We are monitoring the spread of the disease and the severity and duration of the outbreak; until we know more, we are unable to predict the full effects of COVID-19 on our ability to satisfy demand for our products in a cost-effective manner.

At times, our suppliers ask us to purchase excess products to ensure we do not face a subsequent shortage. For example, in certain quarters of 2014, 2015 and 2016, we purchased more wafers from TSMC than we required, which affected our available cash for that quarter. In addition, we may invest significantly in inventory to support anticipated growth in our business, as we did with endpoint IC inventory in 2017. If we are unable to sell the additional inventory we purchased, or if we must sell it at lower prices due to excess inventory or obsolescence, our operating results may be adversely affected.

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If our suppliers fail to deliver products at reasonable prices or with satisfactory quality levels, then our ability to bring products to market and our reputation could suffer. For example, if supplier capacity diminishes, including from a catastrophic loss of facilities or otherwise, we could have difficulty fulfilling our orders, our revenue could decline, and our growth prospects could be impaired. We anticipate requiring three to 18 months to transition our assembly services or foundries to new providers. Such a transition would likely require a qualification process by our customers or end users, which could also adversely affect our ability to sell our products and our operating results. Moreover, in the event of a suspected quality issue, the process of testing suspect products and diagnosing and fixing defects could be time consuming and costly and could constrain our ability to supply customers with products.

If we are unsuccessful introducing new products and enhancements, our operating results will be harmed.

To keep pace with technology developments, satisfy increasingly stringent end-user requirements and achieve market acceptance, we plan to introduce new products and services. We commit significant resources to developing these new products and services while improving performance, reliability and reducing costs. Because our products are often used in, and incorporated into, complex business processes and use cases, introduction of our new products and services may take time to be successful or may not succeed at all.

For example, we are investing substantial resources to develop and enhance every layer of our platform. The market for many of our products is nascent, and we need to create market awareness to drive end-user adoption. Creating market awareness includes promoting our products to meet end-user needs and solve end-user problems. We may be late in delivering or improving our products to meet our partners’ or end users’ needs. We may also not adequately solve the problems that end users encounter. We believe we must continue investing significant resources to maintain our competitive position. Still, the success of a new or enhanced product or service is impacted by accurate forecasts of long-term market demand, which is uncertain. We may also fail to anticipate or meet market requirements for new features and functionality. By focusing on certain new products and services, we may miss opportunities for other products and services that may be more widely adopted.

For example, introducing new endpoint ICs may take longer than we expect or may cost more than we expect. Inlay partners may face complications or delays qualifying inlays incorporating our new endpoint ICs with organizations, such as the ARC Program at Auburn University as discussed below, that certify inlays for end-user deployments. Inlay partners may also encounter issues incorporating our new endpoint ICs into their production processes and may see slower-than-expected adoption by end users. We may incur higher testing and manufacturing costs when introducing a new endpoint IC than we anticipated, which could adversely affect our gross margins. Finally, widespread use of new ICs can expose performance anomalies or incompatibilities with existing devices or systems that can require design modifications that can slow production or introduction of new ICs or make them more expensive to produce or introduce. Depending on the scale of these product introduction issues, the success of the product could be adversely affected, and consequently, our business and financial performance could be harmed.

If we are unable to develop new products and services using new or enhanced technologies, our competitive position will be adversely affected.

In the future, we may not succeed in developing the underlying technologies or processes necessary to create new or enhanced products and services, or we may not succeed in licensing or otherwise acquiring these technologies from third parties. In some instances, we may be late to market with our innovations, or may choose to be a “fast follower” but subsequently be unable to overcome the lead we gave to our competition. The success of a new or enhanced product depends on technological developments, market positioning and timing, as well as on various implementation factors, including:

• our timely and efficient completion of the design process;

• our timely and efficient implementation of manufacturing, assembly and testing procedures;

• product or service performance;

• product certification;

• our ability to attract, retain and manage technical personnel;

• the quality, reliability and selling price of the product or service; and

• effective marketing, sales and service.

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If we are unable to develop new products, features and services to compete effectively, our market share could be adversely affected, which would harm our business, financial condition and operating results.

An inability or limited ability of enterprise systems to exploit RAIN information may adversely affect the market for our products.

A successful end-user RAIN deployment requires not only tags and readers or gateways, but integration with information systems and applications that derive business value from endpoint data. Unless technology providers continue developing and advancing business analytics tools, and end users install or enhance their information systems and applications to use these tools, deployments of RAIN products and applications could stall. Our efforts to foster development and deployment of these tools could fail. In addition, our guidance to business-analytics tool providers for integrating our products with their tools could prove ineffective.

Solution providers and SIs are essential to the RAIN market by providing deployment know-how to end users who are unable to deploy RAIN solutions on their own. Our efforts to train and support these solution providers and SIs could fail. Further, integrating our products with end-user information systems could prove more difficult or time consuming than we or they anticipate, which could delay deployments. If end users are unable to successfully exploit RAIN data, or if we are unable to support solution providers or SIs adequately, or if deployments of our platform are delayed, we could see a material adverse impact on our business, operating results, financial condition or prospects.

Our reliance on a small number of customers could adversely affect our business and operating results.

We sell our endpoint ICs directly to inlay and tag original equipment manufacturers, or OEMs, and original design manufacturers, or ODMs. In 2019, sales to tag OEMs, Avery Dennison and Smartrac accounted for 19% and 12% of our total revenue, respectively. In addition, in November 2019, Avery Dennison announced it was acquiring Smartrac’s Transponder (RFID inlay) segment in a transaction expected to close in early 2020. Our consequent sales concentration to a smaller number of tag OEMs lowers our bargaining power and increases the risk that our pricing or sales could decline quickly based on aggressive pricing or sales measures taken by our competitors or our own failure to compete effectively.

We sell our reader ICs and reader modules to reader OEMs and ODMs, and our readers and gateways to VARs and SIs, primarily through distribution. We are beginning to sell software through these same partners as well as through ISV partners. We have experienced in the past and may again experience in the future purchasing delays or disruptions by some of these channel partners due to conditions within their organizations that are independent of market demand for our products or the RAIN market generally.

We attempt to diversify our partner base by pursuing orders from smaller partners, adding new partners and increasing end-user demand for our products. We may not succeed in doing so. The number of tag OEMs may also continue to decrease by consolidation or otherwise. Even if we succeed in obtaining and retaining new partners, our small number of existing large tag OEMs may continue to account for a substantial portion of our future sales. Changes in markets, channel partners, end users, products, negative economic or financial developments, or poor or limited credit availability may adversely affect the ability of our tag OEMs, reader and gateway partners and distributors to bring our products to market. If our reader IC or reader module OEMs are unable to obtain components for products in which our products are included, our product sales could be adversely affected

Our future performance will depend, in part, on our ability to attract new tag OEMs, reader and gateway partners and distributors that use, market and support our products effectively, especially in market segments where we have not sold products previously. If we cannot retain our current tag manufacturers, reader and gateway partners and distributors or establish new relationships, our business, financial condition and operating results could be harmed. In addition, our competitors’ strategic relationships with or acquisitions of these tag OEMs, reader and gateway partners or distributors could disrupt our relationships with them. Any such disruption could impair or delay our product sales to end users and increase our costs of distribution, which could adversely affect our sales or operating results.

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We also engage with large enterprises to adopt our RAIN solutions in large projects that make our revenues and operating results more volatile than they would be without these large projects. These large projects, often involving sizable purchases of our readers and gateways, are often discrete deployments that can result in significant sales for periods of time. For example, we generated 14% of 2019 total revenue from a North American Systems customer in connection with a project-based deployment of gateways, which we expect to complete in the first quarter of 2020.If we are unable to replace project-based revenue from these discreteprojects with new revenue streams, or if end users with sizable projects change or delay them without giving us with adequate notice, our sales could decline significantly from period to period and harm our stock price as a result.

Our reliance on distributors, SIs, VARs and software solution providers to sell and distribute our products to end users could harm our business and revenue.

We rely on our partner ecosystem to sell and distribute our products to end users. Our revenue depends on their ability to successfully market, sell, install and provide technical support for the solutions in which our products are integrated or to sell our products on a standalone basis. Our revenue will decline if our partners fail. Further, faulty or negligent implementation and installation of our products by SIs may harm our reputation.

Because we fulfill through channel partners, our ability to affect or determine end-user demand is limited.

End users drive demand for our products but because we are often at least one step removed from these end users, we may be unable to rectify damage to our reputation caused by our channel partners who have more direct contact with these end users. For strategic or other reasons, our channel partners may choose to prioritize the sale of our competitors’ products over our products. Furthermore, some of our channel partners may offer some products that compete with our products and may limit sales of our products. If our distributors, SIs, VARs or software solution providers are unable to sell enough of our products in a given quarter or if they choose to decrease their inventories of our products for any reason, our sales to these channel partners and our revenue will decline.

Many of our channel partners provide us with customer referrals and cooperate with us in marketing our products; however, our relationships with them may end at any time. If we fail to successfully manage our relationships with our channel partners, our ability to sell our products into new industries and to increase our penetration into existing industries may be impaired and our business will be harmed.

If our channel partners do not properly forecast end users’ demand for our products then they may carry excess product inventory, which could adversely affect our revenue and operating results.

If some or all of our channel partners purchase more of our products than they need to satisfy end-user demand in any particular period, inventories held by the channel partners will grow during that period. The channel partners are then likely to reduce future orders until they realign inventory levels with end-user demand, which could adversely affect our product revenue in a subsequent period.

Distributors may also return our products in exchange for other products, subject to time and quantity limitations. Our reserve estimates for products stocked by our distributors are based principally on reports provided to us by our distributors, typically on a monthly basis. To the extent this resale and channel-inventory information is inaccurate, or we do not receive it in a timely manner, we may not be able to make accurate reserve estimates for future periods, which could adversely affect our operating results.

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Our growth strategy depends in part on the success of strategic relationships with third parties and their continued performance and alignment.

To continue our growth, we are investing in our relationships with SIs, VARs and software solution providers that have product offerings that complement our platform and through which we will fulfill sales. Our business will be harmed if we fail to successfully develop and implement such strategic relationships. For example, operating results may suffer if our efforts towards developing our go-to-market relationships consume resources and incur costs, but do not result in a commensurate increase in revenue. In addition, such relationships may involve exclusivity provisions, additional levels of distribution, discount pricing or investments in other companies. The cost of developing and maintaining such relationships may go unrecovered or unrewarded and our efforts may not generate a correspondingly significant increase in revenue.

Selling prices of our products could decrease substantially, which could have a material adverse effect on our revenue and gross margins.

Historically, our market has experienced price erosion. The average selling price, or ASP, of our products has decreased as the RAIN market has developed. We may experience substantial fluctuations in future operating results due to further ASP reductions.

From time-to-time we reduce the selling prices of our products to meet end-customer demands or to respond to market pressure from our competition. For example, during the second half of 2017, competitive pressures led to larger ASP declines for our endpoint ICs than we saw in previous quarters. As the market has grown, we have generally seen competitive pressures increase. We also sometimes reduce prices to encourage adoption, address macroeconomic conditions or for other reasons. We expect to do so again in the future. If we are unable to offset ASP reductions with increased sales volumes or reduced product costs, then our revenue and gross margins will suffer. Further, our customers may be slow to migrate to new, higher margin products. Some competitors have significantly greater resources than we have and may be better able to absorb the negative impact on operating results as a result of such trends.

Rapid market innovation, which we continue to experience, can drive intense pricing pressure, particularly for older products or products using older technology. New market requirements can render old products uncompetitive for new opportunities. When demand for older products declines, ASPs may drop, in some cases precipitously. To profitably sell our products we must continually improve our technology and processes, and reduce costs in line with the lower selling prices. If we and our third-party suppliers and manufacturers cannot advance process technologies or improve efficiencies to a degree sufficient to maintain required margins, we may not be able to sell our products profitably. Should our cost reductions fail to keep pace with reductions in market prices, our business, financial condition and operating results will be materially adversely affected.

Changes in our product mix could cause our overall gross margin to decline, adversely affecting our operating results and financial condition.

We may not be able to maintain our historical gross margins. We generate a majority of our revenue from endpoint IC sales, which have historically lower gross margins than our other products. If endpoint IC revenue increases as a percentage of total revenue, then our company-wide gross margin will decline. In addition, endpoint IC gross margins are affected by product mix, which can fluctuate based on competitive pressures and end-user demand. A shift in sales mix away from our higher margin products to lower margin products, in particular for our endpoint ICs, will adversely affect our gross margins. As the market for our endpoint ICs matures, we experience price erosion which will adversely affect gross margins if we are not able to realize cost reductions or introduce or shift towards higher-margin ICs. Additionally, competitive alternatives to our products, overall increased competition, weaker than expected demand, currency exchange rates and other factors may lead to lower prices, revenue and margins in the future, adversely affecting our operating results and financial condition.

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We generate most of our revenue from our endpoint ICs, and a decline in sales of these products or increased price competition in the market for endpoint ICs could adversely affect our operating results and financial condition.

We derive, and expect to continue to derive, a majority of our product revenue from our endpoint ICs. Accordingly, we are vulnerable to fluctuations in endpoint IC demand – if demand declines then our business and operating results will be adversely affected. In addition, the continued adoption of and demand for our existing endpoint ICs, as well as for our new endpoint ICs, derives in part from our ability to continually innovate and to demonstrate the benefits of using our endpoint ICs with our reader ICs and reader modules, readers and gateways to achieve superior performance over our competitors. If we are not successful in establishing the benefits of using our products and platform, we may not be successful in countering competitive pressures to lower prices for our endpoint ICs and our business and operating results could be adversely affected.

Our products must meet exacting technical and quality specifications. Defects, errors or interoperability issues with our products, the failure of our products to operate as expected, or undue difficulty in deploying our products in actual operations could affect our reputation, result in significant costs to us and impair our ability to sell our products.

Our products may contain defects or errors or may not operate as we or our channel partners or end users expect, which could materially and adversely affect our reputation, result in significant costs to us and impair our ability to sell our products in the future. Our products must meet demanding specifications for quality, performance and reliability. Our products are highly technical and designed to be deployed in large, complex systems under a variety of conditions. Channel partners and end users may discover errors, defects or incompatibilities only after deploying our products. For example, environments with certain physical characteristics or with radio-frequency interference may negatively affect gateway performance and our ability to track or locate items. In addition, our channel partners or end users may experience compatibility or interoperability issues between our products and their enterprise software systems or networks, or between our products and other RAIN products they may use.

We may experience quality problems when our products are combined with or incorporated into products from other vendors, such our tag OEMs using our endpoint ICs with their antennas, or our reader partners using our reader ICs or reader modules in their readers. We may have difficulty identifying and correcting the problems when third parties are combining, incorporating or assembling our products.

If we are unable to fix errors or other problems, we could experience:

• loss of customers or customer orders;

• lost or delayed market acceptance and sales of our products;

• loss of market share;

• damage to our brand and reputation;

• impaired ability to attract new customers or achieve market acceptance;

• diversion of development resources;

• increased service and warranty costs;

• replacement costs;

• legal actions by our customers; and

• increased insurance costs.

Given the technical and business requirements against which end users evaluate RAIN and our products and platform, our business results and prospects could suffer if we are unable to make our products and our platform easy to deploy. To demonstrate the benefits of our platform, or layers of it, in fulfilling business needs and to develop deployment methods to meet those needs, we frequently enter into proof-of-concept deployments, or POCs, with prospective end users. These POCs can extend for relatively long periods of time, and their ultimate outcome can be mixed for a variety of reasons, including changes in end-user business requirements, changes in end-user commitment to the POC as well as deployment challenges. If we fail to deliver deployable solutions through POCs or otherwise, adoption of our products and platform could be adversely affected and our reputation and our business prospects could suffer.

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Although our agreements typically contain provisions that purport to limit our liability for damages resulting from defects in our products, such limitations and disclaimers may not be enforceable or otherwise effectively protect us from claims. We may be required to indemnify our customers against liabilities arising from defects in our products or in their solutions that incorporate our products. These liabilities may also include costs incurred by our channel partners or end users to correct problems or replace our products.

The costs we incur correcting product defects or errors may be substantial and could adversely affect our operating results. Although we test our products for defects or errors prior to product release and during production, our customers still occasionally catch defects or errors that we miss. Such defects or errors have occurred in the past and may occur in the future. To the extent product failures are material, they could adversely affect our business, operating results, customer relationships, reputation and prospects. Also, we assert that our products conform to the Gen2 protocol. Compatibility issues between our products and the protocol, or among different products that each nominally conform to the protocol, could disrupt our customers’ operations, hurt our customer relations and materially adversely affect our business and prospects.

We will lose market share and may not be successful if end users or customers do not design our products into their products and systems.

End users often undertake extensive pilot programs or qualification processes prior to placing orders for large quantities of our products, in particular for reader and gateway products, because these products must function as part of a larger system or network or meet certain other specifications. We spend significant time and resources to have our products selected by a potential end user or customer, which is known as a “design-in.” In the case of reader and gateway products, a “design-in” means the product has been selected to be designed into the end user’s system and, in the case of an endpoint IC, may mean the endpoint IC has met performance criteria established by the end user or customer. If we fail to develop new products that adequately or competitively address the needs of end users or customers, they may not select our products to be designed into their systems, which could adversely affect our business, prospects and operating results.

Our business is dependent upon our brand recognition and reputation, and if we fail to maintain or enhance our brand recognition or reputation, our business could be harmed.

We believe that maintaining and enhancing our brand and our reputation is critical to our relationships with our customers and end users and to our ability to attract new customers and end users. We also believe that our brand and reputation will be increasingly important as competition in our market continues to develop. Our success in this area will depend on a wide range of factors, some of which are beyond our control, including the following:

• the efficacy of our marketing efforts;

• our ability to continue to offer high-quality, innovative and defect-free products;

• our ability to maintain the security and privacy of our customers’ sensitive and proprietary information;

• our ability to retain existing customers and obtain new customers;

• our ability to maintain high customer satisfaction;

• the quality and perceived value of our products;

• our ability to successfully differentiate our products from those of our competitors;

• actions of competitors and other third parties; and

• positive or negative publicity.

If our brand promotion activities are not successful, our operating results and growth may be harmed.

Negative publicity, whether or not justified, relating to events or activities attributed to us, employees, channel partners or others associated with any of these parties, may tarnish our reputation and reduce the value of our brand. Damage to our reputation and loss of brand equity may reduce demand for our products and platform and have an adverse effect on our business, operating results and financial condition. Moreover, any attempts to rebuild our reputation and restore the value of our brands may be costly and time consuming, and such efforts may not ultimately be successful.

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If we are unable to protect our intellectual property, our business could be adversely affected.

Our success depends in part upon our ability to obtain, maintain and enforce patents, copyrights, trade secrets, trademarks and other intellectual property rights and to prevent third parties from infringing, misappropriating or circumventing the rights we own or license. Given our industry-leading innovation in RAIN technology, there is a high likelihood that material elements of our products, including our endpoint ICs have been or will be copied by competitors. We take appropriate and feasible measures to protect our intellectual property rights. However, we cannot be sure that we will be able to prevent such conduct by simply enforcing, or threatening to enforce, those rights, particularly against competitors who may have more financial and other resources to deploy against us.

We rely on a variety of intellectual property rights, including patents in the United States and copyrights, trademarks and trade secrets in the United States and foreign countries. Because many RAIN products are used in or imported into the United States, we have historically focused on filing U.S. patent applications. By seeking patent protection primarily in the United States, our ability to assert our intellectual property rights outside the United States is limited. We have registered trademarks and domain names in selected foreign countries where we believe filing for such protection is appropriate and have a small number of foreign patent applications and foreign issued and allowed patents. Regardless, some of our products and technologies may not be covered adequately by any patent, patent application, trademark, copyright, trade secret or domain name. Also, effective intellectual property protection may be unavailable or more limited in one or more relevant jurisdictions relative to those protections available in the United States.

We cannot guarantee that:

• any of the patents, trademarks, copyrights, trade secrets or other intellectual property rights we presently employ in our business will not lapse or be invalidated, circumvented, challenged or abandoned;

• our intellectual property rights will provide competitive advantages to us;

• our ability to assert our intellectual property rights against potential competitors or to settle current or future disputes will not be limited by our agreements with third parties;

• any of our pending or future patent applications will be issued or have the coverage we originally sought;

• our intellectual property rights can or will be enforced, particularly in jurisdictions where competition may be intense or where legal protections may be weak;

• we will not lose the ability to assert our intellectual property rights against, or to license our technology to, others and collect royalties or other payments; or

• we will retain the right to ask for a royalty-bearing license in relation to ratification of a standard for which we participate in the standards process if we fail to file an intellectual property declaration pursuant to such standards process.

Monitoring and addressing unauthorized use of our intellectual property is difficult and costly. Unauthorized use of our intellectual property has already occurred and may occur again in the future. Our failure to identify unauthorized use or otherwise adequately protect our intellectual property could adversely affect our business.

Any actual or threatened litigation to enforce our intellectual property could be time consuming, distracting, expensive and could result in outcomes or trigger consequences that are harmful to us. We could incur significant costs and divert our attention and the efforts of our employees by threatening or initiating litigation, which could, in turn, decrease revenues and increase expenses. To the extent we discuss our concerns regarding possible or actual infringement with others prior to or in lieu of litigation, we could also become subject to claims brought by alleged infringers. Because litigation outcomes are uncertain, we could lose in our enforcement action or weaken our intellectual property in the litigation process. An adverse decision in any legal action could limit our ability to assert our intellectual property rights, limit the value of our technology or otherwise negatively impact our business, financial condition and operating results. At the same time, any decision not to enforce our intellectual property rights through litigation could embolden others to violate or potentially violate our intellectual property rights and thus weaken those rights over time.

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In June 2019 we filed a filed a patent infringement lawsuit against NXP USA, Inc., a Delaware corporation and a subsidiary of NXP, in the U.S. District Court for the Northern District of California. Our complaint alleges that certain NXP endpoint ICs infringed and continue to infringe numerous U.S. patents we own. We are seeking, among other things, past damages, including lost profits, and no less than a reasonable royalty; enhanced damages for willful infringement; and reasonable attorneys’ fees and costs for infringement of each of the asserted patents. We are also seeking an injunction against NXP making, selling, using, offering for sale or importing an endpoint IC NXP introduced in 2017. In response, NXP asserted various affirmative defenses and various counterclaims including inequitable conduct, fraudulent concealment, breach of contract and promissory estoppel. Their counterclaims allege that we violated purported commitments to GS1 EPCglobal. NXP seeks damages and injunctive relief in connection with its counterclaims. In October 2019, NXP USA, Inc. and NXP filed a patent infringement lawsuit against us in the U.S. District Court for the District of Delaware, which we have moved to transfer to the U.S. District Court for the Western District of Washington. In addition, as of the date of this report, NXP has filed petitions against all of the patents we accuse NXP of infringing in our case in the Norther District of California for inter partes review, or IPR, with the Patent Trial and Appeal Board for the U.S. Patent and Trademark Office. If we are unsuccessful in prosecuting our claims against NXP or in defending NXP’s claims against us, or to the extent we cannot maintain the validity and enforceability of our patents in IPRs or otherwise, we could see a material adverse effect on our business, results of operations and financial condition. Regardless of the outcome, our lawsuit against NXP may increase our expenses, distract management and other key employees, negatively impact relationships with other participants in our supply chain or with customers and could result in retaliatory claims against us.

Some of our know-how or technology is not patented or patentable and may constitute trade secrets. To protect our trade secrets, we have a policy of requiring our employees, consultants, advisors and other collaborators to enter into confidentiality agreements. We also rely on customary contractual protections with our channel partners, suppliers and end users, and we implement security measures intended to protect our trade secrets, know-how or other proprietary information. However, we cannot guarantee we have entered into appropriate agreements with all parties that have had access to our trade secrets, know-how or other proprietary information. Moreover, the agreements we have entered into may not provide meaningful protection for our trade secrets, know-how or other proprietary information in the event of any unauthorized use or disclosure. Our trade secrets, know-how or other proprietary information could also be obtained by third parties as a result of breaches of our physical or electronic security systems or our suppliers, employees or consultants could assert rights to our intellectual property.

Finally, our use of overseas manufacturers may involve extra risk. The intellectual property protection in countries where our third-party contractors operate is weaker than in the United States. If the steps we have taken and the protection provided by law do not adequately safeguard our intellectual property rights then we could suffer lost profits due to sales of competing products that exploit our intellectual property rights.

We may assert or face claims of intellectual property infringement which could be time consuming, costly to prosecute, defend or settle, result in the loss of significant rights, and adversely affect RAIN adoption generally.

Many companies in our industry, as well as so-called non-practicing entities, hold large numbers of patents and other intellectual property rights and may vigorously pursue, protect and enforce their intellectual property rights. We have received in the past, and may receive in the future, invitations to license patent and other intellectual property rights to technologies that could be important to our business. We may also receive assertions against us, our channel partners or end users claiming that we or they infringe patent or other intellectual property rights. Claims that our products, processes, technology or other aspects of our business infringe third-party intellectual property rights, regardless of their merit or resolution, could be costly to defend or settle and could divert the efforts and attention of our management and technical personnel. If we decline to accept an offer, the offering party may allege that we infringe such patents, which could result in litigation.

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Intellectual property disputes affecting our industry may adversely affect RAIN adoption. For example, in 2011 Round Rock Research filed lawsuits against 11 end users, including Walmart and Macy’s, for patent infringement related to their RAIN usage. We believe those lawsuits materially and adversely affected demand for our products by retailers and others from 2011 to 2014. In 2013, Round Rock Research entered into licensing settlement agreements with a substantial number of RAIN vendors, including us; in early 2015, they reached a settlement agreement with the last of the end-user defendants. The Round Rock patents were all expired by the end of 2019. However, we, our channel partners, suppliers or end users could be involved in similar disputes in the future which would materially and adversely affect our operating results and growth prospects.

We may also be forced, or choose, to take action to protect our own intellectual property against infringement by others. Our actions could materially and adversely affect RAIN adoption as well as our own operating and growth prospects. For example, in June, 2019 we filed a patent infringement lawsuit against NXP USA, Inc., a Delaware corporation and subsidiary of NXP, in the U.S. District Court for the Northern District of California and in October 2019, NXP USA, Inc. and NXP filed a patent infringement lawsuit against us in the U.S. District Court for the District of Delaware. For more information, see “—If we are unable to protect our intellectual property, our business could be adversely affected.”

Many of our agreements require us to indemnify and defend our channel partners and end users from third-party infringement claims and pay damages in the case of adverse rulings. These damages could be sizable and disproportionate to the business derived from the accused channel partners or end users. Moreover, we may not know whether we are infringing a third party’s rights due to the large number of RAIN-related patents or to other systemic factors. For example, patent applications in the United States are maintained in confidence for up to 18 months after filing or, in some instances, for the entire time prior to patent issuance. Consequently, we may not be able to account for such rights until after publication. Competitors may also have filed patent applications or received patents and may obtain additional patents and proprietary rights that block or compete with our patents. Claims of this sort could harm our relationships with our channel partners or end users and might deter future customers from doing business with us. We do not know whether we will prevail in any future proceedings given the complex technical issues and inherent uncertainties in intellectual property litigation. If any pending or future proceedings result in an adverse outcome, then we could be required to:

• cease the manufacture, use or sale of the infringing products, processes or technology;

• pay substantial damages for infringement;

• expend significant resources to develop non-infringing products, processes or technology;

• license technology from the party claiming infringement, which license may not be available on commercially reasonable terms, or at all;

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

• pay substantial damages to our channel partners or end users to cause them to discontinue their use of, or replace, infringing products with non-infringing products.

Any of the foregoing results could have a material adverse effect on our business, financial condition and operating results.

We have limited visibility into the length of the sales and deployment cycles for our products.

Because we have limited sales history for our products, and because our market is growing and changing rapidly, we have limited or uncertain visibility into the lengths of the product sales and deployment cycles, and from time-to-time these cycles have been longer than we anticipated. For new product types our visibility into the sales and deployment cycle lengths is even more limited; inasmuch as these products are elements of a systems sale, our experience in the systems-selling cycle is even more limited. Numerous factors can contribute to uncertainties in the cycle lengths, including the time channel partners and end users spend evaluating our products, our time educating them on the products’ benefits, and our time integrating our systems with their systems. The length and uncertain timing of the sales and deployment cycles can lead to delayed product orders. In anticipation of product orders, we may incur substantial costs before the sales cycle is complete and before we receive any customer orders or payments. If a sale is not completed or is cancelled or delayed, we may incur substantial expenses, which could hinder our ability to achieve or maintain profitability or otherwise negatively affect our financial results.

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Significant developments stemming from the current U.S. administration’s priorities or initiatives, or the U.K.’s departure from the EU could have a material adverse effect on us.

The current U.S. administration has pursued trade policy that is starkly different from past administrations. Its actions include withdrawing the United States from negotiations for the TPP; renegotiating NAFTA; announcing and imposing tariffs on a wide variety of trading partners including, as of the date of this report, tariffs on up to $550 billion of goods imported into the United States from China; proposing restrictions on free trade generally as well as on immigration to the United States.

Changes in U.S. social, political, regulatory and economic conditions or in laws and policies governing foreign trade, manufacturing, development and investment in the territories and countries where we currently develop and sell products, and immigration to the United States, and any negative sentiments towards the United States as a result of such changes, including our trading partners potentially imposing tariffs on imports of U.S. products, could materially affect our business or the businesses of our customers or end users, which in turn could result in weakening demand by our customers or end users for our products. In addition, negative sentiments towards the United States among non-U.S. customers and among non-U.S. employees or prospective employees, or the imposition of restrictions on immigration to the United States, could adversely affect sales or hiring and retention, respectively. To the extent U.S. policies engender an economic downturn, in the United States or abroad, or to the extent they increase efforts by other countries to promote its own industries such as the Chinese government’s efforts to promote China’s domestic semiconductor industry, the effects could materially affect our business or the businesses of our customers or end users in many ways, only some of which we can identify as of the date of this report.

In August 2018, the United States imposed tariffs on products manufactured in China and though a preliminary trade agreement between the United States and China was signed in early 2020, certain tariffs remain as negotiations between the countries continue. Current U.S. tariffs affect certain pre-Monza R6 endpoint IC SKUs that our inlay partners import into, and process in, the United States, a relatively small portion of our current endpoint IC sales. However, in general, the imposition of import tariffs by the current U.S. administration could adversely affect our business.

In June 2016, the United Kingdom held a referendum and voted in favor of leaving the European Union or EU, and in January 2020, the United Kingdom officially left the EU, with a transitional period scheduled to end on December 31, 2020. The United Kingdom’s departure from the EU and ongoing negotiation related to the United Kingdom’s future trade and other relationships with the EU have created political and economic uncertainty, particularly in the United Kingdom and the EU, and this uncertainty may last for years. Our business in the United Kingdom, the EU and worldwide could be affected during this period of uncertainty, and perhaps longer, by the impact of the United Kingdom’s decision to leave the EU. There are many ways in which our business could be affected, only some of which we can identify as of the date of this report.

The withdrawal of the United Kingdom from the EU, along with events that could occur in the future as a consequence of the United Kingdom’s withdrawal, including the possible breakup of the United Kingdom, may cause significant volatility in global financial markets, including in globalcurrency and debt markets. This volatility could cause a slowdown in economic activity in the United Kingdom, Europe or globally, which could adversely affect our operating results and growth prospects. In addition, our business could be negatively affected by new trade agreements between the United Kingdom and other countries, including the United States, and by the possible imposition of trade or other regulatory barriers in the United Kingdom. Furthermore, we currently operate in Europe through an Impinj subsidiary based in the United Kingdom, which currently provides us with certain operational, tax and other benefits. The United Kingdom’s withdrawal from the EU could adversely affect our ability to realize those benefits and we may incur costs and suffer disruptions in our European operations as a result. These possible negative impacts, and others resulting from the United Kingdom’s withdrawal from the EU, may adversely affect our operating results and growthprospects.

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We are subject to order and shipment uncertainties. Inaccuracies in our estimates of end-customer or channel-partner demand and product mix, or unexpected external events, could negatively affect our inventory levels, sales and operating results.

We have limited ability to accurately plan purchases or manufacturing because lead times for our products can be lengthy and because our ability to accurately forecast near-term product demand is limited, potentially causing us to have either excess or inadequate inventory, to lose sales, or to reduce our profit margins. High inventory levels and potential obsolescence could result in unexpected expenses or increases in reserves that could adversely affect our business, operating results and financial condition. Low inventory levels could cause us to lose sales, market share or damage our customer relationships.

We sell our products primarily through channel partners and we derive revenue primarily from purchase orders rather than from long-term purchase commitments. To ensure product availability, we typically manufacture from channel-partner forecasts before we receive purchase orders. However, many of our channel partners have difficulty accurately forecasting end-user demand for our products and the timing of that demand. Our channel partners can also cancel purchase orders or defer product shipments, in some cases with little or no advance notice to us. In addition, when we release new products, we may carry higher inventories or have slower inventory turnover depending on our ability to anticipate market acceptance. We also sometimes receive soft commitments for large orders which do not materialize. We have additional uncertainty from our competition’s business practices and from unanticipated external events, such as changes in regulatory standards, all of which can adversely affect demand and consequently our inventory levels, sales and operating results.

We are subject to risks inherent in foreign operations, including social, political and economic flux and compliance with additional U.S. and international laws, including those related to anti-bribery and anti-corruption, and may not be able to successfully maintain or expand our international operations.

In 2019, we derived 67% of our total revenue from sales outside the United States. We anticipate growing our business, in part, by continuing to expand our international operations, which involves a variety of risks, including:

• changes, some unexpected or unanticipated, in regulatory requirements, taxes, trade laws, tariffs, export quotas, custom duties or other trade restrictions;

• lack of established, clear, or fairly implemented standards or regulations with which our products must comply;

• greater difficulty in enforcing contracts, judgments and arbitration awards in international courts, and in collecting accounts receivable and longer payment and collection periods;

• difficulty in supporting and localizing our international products;

• different or unique competitive pressures as a result of, among other things, the presence of, or preference for, local businesses and market players;

• challenges in managing employees, some foreign nationals, over large geographic distances, including the need to implement appropriate systems, policies, benefits and compliance programs;

• challenges in doing business in different languages and in business cultures with varying norms of transparency and compliance with policies than in the United States;

• limited or unfavorable intellectual property protection;

• misappropriation of our intellectual property;

• inflation and fluctuations in foreign currency exchange rates and interest rates;

• withholding taxes or other taxes, or changes thereof, on our foreign income;

• restrictions, or changes thereof, on foreign trade or investment, including currency-exchange controls;

• changes in a country’s or region’s political, regulatory, legal or economic conditions, including, for example, global and regional economic disruptions caused by the recent COVID-19 virus outbreak;

• political uncertainty, strife, unrest, or conflict, including, for example, the United Kingdom’s departure from the EU and recent political unrest in Hong Kong;

• differing regulations with regard to maintaining operations, products and public information;

• inequities or difficulties obtaining or maintaining export and import licenses;

• differing labor regulations, including where labor laws may be more advantageous to employees than in the United States

• restrictions on earnings repatriation;

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• corrupt or unethical practices in foreign jurisdictions that may subject us to exposure under applicable anti-corruption and anti-bribery laws such as the U.S. Foreign Corrupt Practices Act of 1977, as amended, or FCPA, and the United Kingdom Bribery Act of 2010, or U.K. Bribery Act; and

• regulations, and changes thereof, relating to data privacy and the unauthorized use of, or access to, commercial and personal information, particularly in Europe.

Various foreign regulatory or governmental bodies may issue rulings that invalidate prior laws, regulations, or legal frameworks in ways that may adversely impact our business. For example, the European Union Court of Justice in October 2015 issued a ruling immediately invalidating the EU-U.S. Safe Harbor Framework, which facilitated personal data transfers to the United States in compliance with applicable EU data-protection laws. EU and U.S. political authorities then adopted the EU-U.S. Privacy Shield in 2016, providing a mechanism for companies to transfer EU personal data to the United States. In addition, the European Commission adopted the General Data Protection Regulation, or GDPR, which became effective on May 25, 2018. The GDPR imposes more stringent data-protection requirements than the former regulatory regime in the EU and provides for greater penalties for noncompliance of up to the greater of 4% of worldwide annual revenue or €20 million. Based on continuingly evolving standards, there remains significant regulatory uncertainty surrounding data transfers from the European Economic Area to the United States.

Additionally, the United Kingdom has enacted the Data Protection Act of 2018 that substantially implements GDPR, and has made statutory amendments to the Data Protection Act that further align it with the GDPR, but as of the date of this report it remains uncertain how data protection laws or regulations in the United Kingdom will develop in the medium to long term and how data transfers to and from the United Kingdom will be regulated following the December 31, 2020 expiration of a transition period following the UK’s exit from the EU. This has created uncertainty with regard to data transfers between the UK, the EU, and other jurisdictions, and could require us to further change the way we conduct our business and transmit data between the U.S., the UK, the EU, and the rest of the world. Likewise, the California Consumer Privacy Act of 2018, or the CCPA, became effective on January 1, 2020. The CCPA imposes stringent data privacy and data protection requirements for certain data of California residents, and provides for noncompliance penalties of up to $7,500 per violation. Many aspects of the CCPA and its interpretation and enforcement remain unclear as of the date of this report. The effects of this legislation are potentially far reaching and may require us to modify our data-processing practices and policies and to incur substantial costs and expenses in an effort to comply.

We opened an office in Shanghai, China in 2011. In addition to the risks listed above, our China operations expose us to risks associated with Chinese laws and policies governing Chinese operations and also to U.S. laws and regulations relating to foreign trade and investment, such as those described under the caption “—We are subject to governmental export and import controls that could subject us to liability or impair our ability to compete in international markets.” To date, legal, policy or regulatory changes have not had a material adverse effect on our business or financial condition, but they may in the future. We may experience increased costs for, or significant impact to, our Chinese operations in the event of changes in Chinese government policies or political unrest or unstable economic conditions in China. The nationalization or other expropriation of private enterprises by the Chinese government could result in total loss of our China investment. Any of these matters could materially and adversely affect our business and results of operations.

Our failure to comply with anti-corruption and anti-bribery laws related to our foreign activities could subject us to penalties and other adverse consequences. Anti-corruption and anti-bribery laws generally prohibit companies and their employees and intermediaries from making payments to foreign officials for the purpose of obtaining or keeping business, securing an advantage or directing business to another person, and require companies to maintain accurate books and records and a system of internal accounting controls. Under the FCPA, U.S. companies may be held liable for corrupt actions taken by directors, officers, employees, agents, or other strategic or local partners or representatives. If we, our intermediaries or our solution providers, SIs, OEMs, ODMs, VARs, distributors, tag manufacturers or other partners fail to comply with FCPA or similar legislation, government authorities in the United States and elsewhere could seek to impose civil or criminal fines and penalties which could have a material adverse effect on our business, operating results and financial conditions. Moreover, China is an area of heightened exposure regarding compliance with anticorruption laws such as the FCPA and the U.K. Bribery Act. We intend to increase our international sales and business in China and, as such, our risk of violating laws such as the FCPA or U.K. Bribery Act also increases.

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We have limited resources to market, sell and support our products and services abroad and may not be able to maintain or increase international demand for our products. In addition, regulations or standards adopted by other countries may require us to redesign existing products or develop new products for those countries. For example, foreign governments may impose regulations or standards with which our current products do not comply or may require operation in frequency bands in which our products do not operate. If we are unable to expand international operations in a timely and cost-effective manner in response to increased demand,we could miss sales opportunities and our revenue may decline, adversely affecting our operating results, business and prospects. If we invest substantial time and resources but are unable to expand our international operations successfully and in a timely manner then our business, prospects and operating results will suffer.

We generally conduct our China operations through a wholly owned subsidiary and our European operations through our U.K. subsidiary. For other worldwide jurisdictions, we generally report our taxable income based on our business operations in those jurisdictions. The relevant taxing authorities may disagree with our determinations as to the income and expenses attributable to the jurisdiction or subsidiary. In the event of a disagreement, if our position was not sustained, we could be required to pay additional taxes, interest and penalties, which could result in tax charges, higher effective tax rates, reduced cash flows and lower overall profitability.

We are subject to governmental export and import controls that could subject us to liability or impair our ability to compete in international markets.

The U.S. and various foreign governments have imposed controls, export license requirements and restrictions on the import or export of certain products, technologies and software. We must export our products in compliance with U.S. export controls, including the Commerce Department’s Export Administration Regulations and various economic and trade sanctions established by the Treasury Department’s Office of Foreign Assets Controls. We may not always be successful in obtaining necessary export licenses, and our failure to obtain required import or export approval for our products or limitations on our ability to export or sell our products imposed by these laws may harm our international and domestic sales and adversely affect our revenue. Noncompliance with these laws could have negative consequences, including government investigations, penalties and reputational harm.

Changes in our products or changes in export, import and economic sanctions laws and regulations may delay us introducing new products in international markets, prevent our customers from using our products internationally or, in some cases, prevent the export or import of our products to or from certain countries altogether. The U.S. government has imposed significant tariffs on a variety of items imported from China. China has responded by imposing significant tariffs on a variety of items imported from the United States. Such tariffs could have a material impact on our product costs and decrease our ability to sell our products to existing or potential customers and harm our ability to compete internationally. Further, it is possible that additional sanctions or restrictions may be imposed by the U.S. government on items imported into the United States from China and any such measures could further adversely affect our ability to sell our products to existing or potential customers and harm our ability to compete internationally. Any change in export or import regulations or legislation; shift or change in enforcement; or change in the countries, persons or technologies targeted by these regulations could result in decreased use of our products by, or in our decreased ability to export or sell our products to, existing or potential customers with international operations, adversely affecting our business and results of operations.

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Instability or deterioration in the political, social, business or economic conditions in key production jurisdictions could harm our business, financial condition and operating results.

We outsource manufacturing and production of our hardware products to suppliers in a limited number of jurisdictions, some of which experience significant and abrupt political, social, business or economic change. These jurisdictions include Thailand, Malaysia, Taiwan and China, which have experienced significant change in political, social, business or economic conditions in the past and may experience them in the future.

For example, we post-process many of our IC wafers, including testing, dicing and other wafer operations, using subcontractors in Bangkok, Thailand, which has experienced ongoing political and social upheaval over the past two decades.

Deterioration in the political, social, business and economic conditions in any jurisdictions in which we have significant suppliers could slow or halt product shipments or disrupt our ability to test or post-process products. In such an eventuality, we could be forced to transfer our manufacturing, testing and post-processing activities to more stable, and potentially more costly regions or find alternative sources. Any such transfer could disrupt our operations for an extended period of time, all of which could harm our business, financial condition and operating results.

Intellectual property licensing from or to others, including competitors, may subject us to requirements or limitations that could adversely affect our business and prospects.

Various intellectual property license agreements give us access to the patents and intellectual property of others, for example to necessary intellectual property in the Gen2 protocol. We have licensed some of our patents and intellectual property to others, for example for our customers to practice their business using our products, and pursuant to agreements we entered into in connection with us participating in the development of GS1 EPCglobal protocols and ISO standards. For the latter, in the course of us participating in the development of GS1 EPCglobal protocols, including UHF Gen2, UHF Gen2 V2, tag data standards, low-level reader protocol and others, we have agreed to license on a royalty-free basis those of our patents that are necessarily infringed by the practice of these protocols to other GS1 EPCglobal members, subject to reciprocal royalty-free rights from those other members. Similarly, in the course of us participating in the development of ISO standards, we have agreed to license on a RAND basis those of our patents that are necessarily infringed by the practice of certain ISO standards. Because it may not be clear whether a member’s intellectual property is necessary to the practice of a protocol, disputes could arise among members, resulting in our inability to receive a license on royalty-free or RAND terms. Further, some GS1 EPCglobal members declined to license some of their intellectual property under royalty-free terms, instead demanding reasonable and nondiscriminatory, or RAND, terms. Disputes or confusion may arise about whether we may invoke our necessary intellectual property if those members choose to assert their RAND intellectual property, potentially causing or at least complicating any ensuing litigation and harming our business, financial condition and operating results.

In the course of our participation in the development of certain ISO standards we have agreed to grant to all users worldwide a license to those of our patents that are necessarily infringed by the practice of those standards, including at frequencies other than UHF, on RAND terms, again subject to reciprocity. As a result, we are not always able to limit to whom and, to a certain extent, on what terms we license our technologies, and our control over and our ability to generate licensing revenue from some of our technologies may be limited. We may also choose to license our patents or intellectual property to others in the future. We cannot guarantee that any patents and technology that we provide in such current and future licenses will not be used against us.

We rely on third-party license agreements; impairment of those agreements may cause production or shipment delays that could harm our business.

We have licensing agreements with other entities for patents, software and technology used in our manufacturing operations and products. For example, we license tools from design-automation software vendors to design our silicon products. Third-party licenses for patents, software and other technology important to our business may not continue to be available on commercially reasonable terms, if at all. Loss of any such licenses could cause significant manufacturing interruptions, delays or reductions in product shipments until we can develop, license, integrate, and deploy alternative technologies, if even possible, which would materially harm our business and operating results.

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Our use of open-source software may expose us to additional risks and harm our intellectual property.

Our products, processes and technology sometimes use or incorporate software that is subject to an open-source license. Open-source software is typically freely accessible, usable and modifiable, and is made available to the general public on an “as-is” basis under the terms of a nonnegotiable license. Use and distribution of open-source software may entail greater risks than use of third-party commercial software. Certain open-source software licenses require a user who intends to distribute the open-source software as a component of the user’s software to disclose publicly part or all of the user’s source code. In addition, certain open-source software licenses require the user of such software to make derivative works of the open-source code available to others at low or no cost. Consequently, open-source licensing can subject our previously proprietary software to open-source licensing terms, which could enable our competitors to create similar offerings with lower development effort and time and ultimately could result in a loss of sales. In addition, open-source licensors generally do not provide warranties or other contractual protections regarding infringement claims or the quality of their code, opening us to business risks that could materially harm our operating results.

We may face claims alleging noncompliance with open-source license terms or infringement or misappropriation of proprietary software. These claims could result in litigation, require us to purchase a costly license, or require us to devote research and development resources to change our software, any of which would have a negative effect on our business and operating results. Few courts have interpreted open-source licenses, and these licenses could be construed in a way that could impose unanticipated conditions or restrictions on our ability to commercialize our offerings. In addition, if there are changes in the licensing terms for the open-source software we use, we may be forced to re-engineer our solutions, incur additional costs or discontinue sale of our offerings. We cannot guarantee that we have incorporated all open-source software in our software in a manner that is consistent with our current policies and procedures, or in a manner that will not subject us to liability.

Privacy and security concerns relating to RAIN could damage our reputation and deter current or potential customers from using our products.

Privacy advocates and others have raised and may continue raising concerns about RAIN compromising consumer privacy or facilitating theft. These concerns include unauthorized parties potentially collecting personally identifiable information or personal data, tracking consumers, stealing identities or causing other issues relating to privacy or data protection. Consumers may be subject to unauthorized readers or gateways surreptitiously identifying and tracking their RAIN tags to gain information a consumer considers private, even if the consumer employs protective measures. Retailers may inadvertently or perhaps even intentionally read consumers’ tags to gain information, such as shopping behavior, that may be illegal to collect, or if not illegal may be considered intrusive by consumers. Unauthorized readers or gateways could gain access to sensitive information stored in tags despite measures designed to thwart such unauthorized access. For example, criminals seeking to divert or steal high-value pharmaceutical products could seek to identify these products by looking for tags with Electronic Product Codes, or EPCs, corresponding to these products. If such concerns increase, or if actual malicious or inadvertent breaches of privacy or theft occur or are perceived to have occurred, then our reputation could be damaged, our business and prospects may suffer, and we could incur significant liability.

In addition to concerns over privacy or theft, it may be possible for those with malicious intent to misuse RAIN in ways that actually facilitate theft or damage the public trust, such as by changing the EPC on a narcotic to misrepresent it as an over-the-counter product. It may possible to embed computer viruses or other malicious code into endpoint ICs, reader ICs, reader modules, readers, gateways or system software to insert malicious code into end-user systems. More generally, we are vulnerable to software bugs, computer viruses, break-ins, phishing attacks, employee errors or malfeasance, attempts to overload our servers with denial-of-service or other attacks and similar disruptions from unauthorized use of our systems, including our IT systems. The security measures we use to detect unauthorized activity and prevent or minimize security breaches may not function as expected or may be insufficient to protect against attacks. Additionally, we may face delays in identifying or responding to security breaches or other security incidents. If a breach or other security incident occurs or is perceived to occur, customer or end-user data, other personally identifiable information or other confidential information could be accessed, obtained, or used without authorization, our and our customers’ operations could be disrupted and our customers or we could be the target of regulatory investigations or proceedings and private claims, demands, or litigation, and we could face potential liability and significant costs and expenses to remediate and otherwise take action in response to the incident. In cases in which a customer is the target of a regulatory action or private lawsuit, the customer might allege that our products did not function as promised and may sue us for breach of contract, breach of warranty,

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negligence or take other action. Additionally, if our customers’ security measures are breached or are perceived to have been breached, even if through means beyond our control, our reputation may be damaged, we may be subject to claims, demands, or litigation and our business and prospects could suffer. Moreover, concerns about security and privacy, even if unfounded, could damage our reputation and operating results or could delay overall RAIN industry development. Even if our products meet new or changed standards or regulations, if our security measures are breached or perceived to have been breached as a result of third-party action, our error or criminal act or otherwise, and, as a result, someone obtains or is perceived to have obtained unauthorized access to customer or end-user data, personal data, personally identifiable information, or other confidential information, our reputation could be damaged, our business and prospects may suffer, and we could incur significant liability. We also could be required to expend significant capital and other resources to address any data security incident or breach and to implement measures to prevent further breaches orincidents.

We cannot ensure that any limitation-of-liability provisions in our customer and user agreements, contracts with third-party vendors and service providers or other contracts are enforceable or adequate or would protect us from any liabilities or damages with respect to claims relating to a security breach or other security-related matter. Although our insurance policies include some liability coverage, if we experienced a widespread security breach or other incident then we could be subject to indemnity claims or other damages that either aren’t covered or exceed our insurance coverage. We also cannot be certain that our insurance coverage is adequate for data-handling or data-security liabilities incurred, or that insurance will continue to be available to us on economically reasonable terms or at all, or that any insurer will not deny coverage as to any future claim. The successful assertion of one or more claims against us that exceed our insurance coverage, or changes in our insurance policies, including premium increases or the imposition of large deductible or co-insurance requirements, could have a material adverse effect on our business, including our financial condition, operating results and reputation.

Government regulations and guidelines and other standards relating to consumer privacy may adversely impact adoption of our products, require us to make design changes or constrain our ability to implement new and desired product features.

Our customers are subject to laws and regulations related to collecting, storing, transmitting and using personal information and personal data, as well as additional laws and regulations that address privacy and security issues related to RFID in general. Because RAIN is a type of RFID, we believe these statutes and regulations apply to RAIN systems. For example, some U.S. states have enacted statutes specifically governing the use of RFID, including prohibitions on mandatory implantation of an RFID IC, unauthorized skimming of information from ID cards and documents, unauthorized personnel tracking using RFID and improper use of RFID tags in drivers’ licenses or on vehicles.

The European Commission, or the EC, has issued guidance to address privacy concerns about RFID. In May 2009, the EC issued a recommendation that retailers in the EU inform their customers when RFID tags are either on or embedded within products. In April 2011, the EC signed a voluntary agreement with private and public entities to develop privacy guidelines for companies using RFID in the EU. The agreement requires companies to conduct privacy impact assessments of new RFID applications and to take measures to address risks identified by the assessment before the RFID application is deployed. While compliance with the guidelines is voluntary, our customers that do business in the EU may have a preference for products that comply with the guidelines. If our RAIN products do not provide the necessary functionality to allow customers to comply with the guidelines, then our business may suffer.

The data-security and privacy legislative and regulatory landscape in the United States and EU, and in other foreign jurisdictions is evolving, and new or changed laws, regulations, guidelines and other standards may adversely impact our business, including our ability to develop future products. If we fail to develop products that implement end-user privacy requirements then end users may choose not to use our products in certain applications, which would harm our business, operating results and financialcondition.

Although the Gen2 V2 protocol described below includes features for addressing consumer privacy and authenticating a tag, a third party may still breach these features, including as implemented in our products, in which case our reputation could be damaged, and our business and prospects may suffer.

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Alternative technologies or standards, or changes in existing technologies or standards, may adversely affect RAIN market growth and our business.

Technology developments may affect our business in ways we cannot anticipate. Breakthroughs in legacy RFID technologies or markets, including those using low frequency or high frequency technology, could adversely affect RAIN market growth generally and demand for our products in particular. For example, NFC, another type of RFID which today addresses a different market than RAIN could, with breakthrough innovations, compete with RAIN in item tagging. Likewise, new technologies such as organic transistors may allow lower-cost ICs than our current silicon-based technology allows. These competing technologies could use intellectual property that is either not royalty-free or to which we do not have access. If we are unable to innovate using new or enhanced technologies or processes or are slow to react to changes in existing technologies or in the market, or have difficulty competing with advances in new or legacy technologies, then our development of new or enhanced products could be materially impacted and potentially result in product obsolescence, decreased revenue and reduced market share.

To encourage widespread RAIN market adoption, we have participated in developing industry standards and have designed our products to comply with these standards. In 2013, GS1 EPCglobal ratified “UHF Gen2 Version 2” or Gen2 V2, a new version of the Gen2 protocol that underlies RAIN communications. In the future, we could lose our position in GS1 EPCglobal or we could lose our project-editorship role for Gen2. If a competitor introduces a Gen2 V2 product before we do, then we could lose market share of face difficulty selling our products. The introduction of new industry standards, or changes to existing industry standards, could make our products incompatible with the new or changed standards and could cause us to incur substantial development costs to adapt to these new or changed standards, particularly if they were to achieve, or be perceived as likely to achieve, greater penetration in the marketplace. If Gen2 V2 diverges significantly from our or the RAIN market’s needs then our products may likewise fail to keep pace with the market, our competitors’ products and end-user requirements, in which case end users could delay RAIN adoption. Moreover, the adoption or expected adoption of new or changed standards could slow our sale of existing products before we can introduce products based on the new or changed standards. New industry standards or changes to existing standards could also limit our ability to implement new features in our products if those features do not meet the new or changed standards. The lost opportunities as well as time and expense required for us to develop new products or change our existing products to comply with new or changed standards could be substantial, and we may not successfully develop products that comply with new or changed standards. If we are not successful in complying with any new or changed industry standards, then we could lose market share, causing our business to suffer.

We are a founding member of the RAIN Alliance, an industry organization that promotes RAIN technology and solutions globally. Our chief executive officer is presently a director and was previously chairman of the RAIN Alliance. Board membership is an elected position that we could lose in future elections; and it provides industry stature and attendant benefits but is not without risk. If the RAIN market falters, or if the RAIN Alliance falters, then we could be blamed, our reputation and industry position could be impacted and our business could suffer.

In addition, certain organizations develop technical specifications for RAIN tags and test those tags against those specifications. For example, the ARC Program at Auburn University, or ARC, is a resource for end users in retail, aviation and manufacturing to develop performance and quality requirements that a RAIN tag needs to meet for deployments specified by those end users. Certain participants in the RAIN market are sponsors of ARC, but we are not among them. A limited number of organizations other than ARC perform this function as well. ARC or a similar organization could develop specifications that few or none of our endpoint ICs meet, which could adversely affect our business.

Compliance with, and changes in, government spectrum regulations could adversely affect our ability to sell products and impair our operating results.

Government radio regulations require that our readers and gateways be certified for spectral compliance in jurisdictions where they are sold or operated. Our readers and gateways are collectively certified for use in more than 40 countries worldwide, including the United States, Canada, Mexico, China, Japan, South Korea and every country in the EU. If one of our reader or gateway products is found to be noncompliant despite being certified then we could be required to modify field-deployed readers or gateways and could spend significant resources as well as miss sales opportunities in the process. Our revenue could decline, adversely affecting our operating results, financial condition, business and prospects.

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Additionally, government regulations may change, possibly without advance notice, requiring us to redesign our products to conform with the new regulations or constraining our ability to implement new features into our products, thereby causing us to incur significant expenses. These expenses include costs associated with obsolete inventory. Regulatory changes may also cause usforego opportunities to improve our products, potentially delaying our time-to-market and adversely affecting our operating results, financial condition, business and prospects.

Our products may cannibalize revenue from each other, which could harm our business.

Sales of some of our products enable our channel partners to develop their own products that compete with other of our products. For example, sales of our reader ICs allow technology companies to build and sell readers and gateways that compete with our products. Similarly, sales of our readers allow our channel partners to build and sell products that compete with our xPortal, xArray and xSpan. We even see cannibalization within our own product line—for example, our xSpan sometimes competes with our xPortal. In the future, we may see one product line expand at the expense of another, or we may be asked by channel partners to disadvantage or divest a product line. We cannot predict whether we can manage such conflicts in the future or retain channel partners despite conflicts. Any of the foregoing could have a material adverse effect on our business, financial condition and operating results.

Acquisitions could result in operating difficulties, dilution and other harmful consequences.

We have evaluated, and expect to continue evaluating, potential strategic transactions, and we may pursue one or more transactions, including acquisitions. We have limited experience executing acquisitions. Any transaction could be material to our financial condition and operating results. Integrating an acquired company, business or technology may create unforeseen operating difficulties and expenditures. Acquisition-related risks include:

• diverting management time and focus from operating our business to acquisition integration;

• difficulties integrating acquired products into our strategy and product plans;

• customers switching from us to new suppliers because of the acquisition;

• inability to retain employees from the business we acquire;

• challenges associated with integrating employees from the acquired company into our organization;

• difficulties integrating accounting, management information, human resource and other administrative systems to permit effective management of the business we acquire;

• potential requirements for remediating controls, procedures and policies appropriate for a public company in the acquired business that prior to the acquisition lacked these controls, procedures and policies;

• potential liability for past or present environmental, hazardous substance, or contamination concerns associated with the acquired business or its predecessors;

• possible write-offs or impairment charges resulting from the acquisition; and

• unanticipated or unknown liabilities relating to the acquired business.

Foreign acquisitions involve additional risks beyond those above, including risks related to integrating operations across different cultures and languages, currency risks and the economic, political and regulatory risks associated with other countries. Also, the anticipated benefit of any acquisition, domestic or foreign, may not materialize. Future acquisitions or dispositions could result in potentially dilutive issuances of our equity securities, debt, contingent liabilities or amortization expenses or goodwill write-offs, any of which could harm our financial condition. Future acquisitions may require us to obtain additional equity or debt financing, which may not be available on favorable terms or at all.

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Our business could be adversely affected if one or more members of our executive management team departed.

Our success depends, in large part, on the continued contributions of our executive management team, including Chris Diorio, Ph.D., our chief executive officer. None of our executive management team is bound by employment contracts to remain with us for a specified period of time. In February 2020, our president and chief operating officer, Eric Brodersen, announced his resignation from us effective March 2020, and although we currently do not intend to appoint a new chief operating officer in the near future, Mr. Brodersen’s departure will require transition of his leadership and management responsibilities to other members of our management team. The loss of any member of our executive management team could harm our ability to implement our business strategy and respond to the rapidly changing market conditions in which we operate.

If we are unable to attract, train and retain qualified personnel, especially technical, sales and marketing personnel, then we may not be able to effectively execute our business strategy.

Our success depends on our ability to attract, motivate and retain qualified personnel. Our technical personnel, the source of our technical and product innovations, and our sales and marketing personnel that drive our go-to-market initiatives are especially important. There is no guarantee we can attract and retain these personnel as we continue to pursue our business strategy. The availability of, and competition for, qualified personnel in the Seattle area, where we are headquartered, constrains our ability to attract qualified new personnel. The loss of the services of one or more of our key employees, or our inability to attract, retain and motivate qualified personnel could have a material adverse effect on our business, financial condition and operating results.

Pricing and other provisions in our customer agreements could adversely affect our operating results.

In the ordinary course of business, we enter into agreements containing pricing terms that could, in some instances, adversely affect our operating results and gross margins. For example, some contracts specify future IC, reader or gateway pricing or contain most-favored customer pricing for certain products. Other agreements contain exclusivity terms that prevent us from pursuing certain business with other customers during the exclusivity period. Reducing prices or offering other favorable terms to one customer could adversely affect our ability to negotiate favorable terms with other customers. For competitive or strategic reasons, we may decide to enter into agreements containing these types of provisions, which could impair our operating results.

We and our suppliers are subject to environmental laws and regulations that could impose substantial costs on us and may adversely affect our business, operating results and financial condition.

Some of our facilities, including those devoted to research and development, are regulated under federal, state, local, foreign and international environmental laws. Those laws govern pollutant discharge into air and water; managing, disposing, handling, labeling, and exposure to hazardous substances/wastes; and contaminated site cleanup. We could incur costs, fines and civil or criminal sanctions; third-party property damage or personal-injury claims; or could be required to pay substantial investigation or remediation costs if we were to violate or become liable under environmental laws. Liability under certain environmental laws can be joint and several and without regard to comparative fault. In addition, some of our products contain hazardous substances and are subject to requirements that regulate their content, such as the EU’s Restriction of Hazardous Substances Directive and analogous regulations elsewhere. Although we design our products to be compliant with environmental regulations and require our third-party contractors to comply, we cannot guarantee that we or our products will always comply with those regulations. Environmental laws also tend to become more stringent over time, and we cannot predict the ultimate costs under environmental laws or the timing of these costs. Failure to comply with these and other environmental laws could result in fines, penalties and decreased revenue, which could adversely affect our operating results.

If our third-party contractors fail to operate in compliance with environmental laws, improperly dispose of wastes associated with our products, or improperly comply with requirements governing the hazardous-substance content of our products, we could be held liable or suffer reputational harm.

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We may not continue to grow or effectively manage our key operating metrics.

Although we have experienced recent revenue growth, we may not experience future revenue growth and you should not rely on any of our operating results from any prior periods as an indication of future performance. For example, in the fourth quarter of 2017 and the first and second quarters of 2018 our revenue declined compared to the same quarter a year earlier. If we are unable to maintain adequate revenue growth and with it our gross margins, as well as control our expenses then our financial results could suffer and our stock price could decline.

To continue to grow and manage being a public company, we believe we must effectively:

• recruit, hire, train and manage qualified engineers for our research and development activities;

• add sales and marketing personnel and expand our customer-support activities and offices;

• implement and improve administrative, financial and operational systems, procedures and controls;

• integrate and train new employees quickly and effectively; and

• coordinate growth among our executive, engineering, finance, marketing, sales, operations and customer-support organizations.

All the above activities add to our organizational complexity and increase our operating expenses.

Our management team is small. We may have insufficient management resources or experience to manage our business effectively or to pursue all commercial opportunities. We may require significant additional management resources as we grow our business. We may not have adequate resources when we need them and we may not have adequate capital to fund our needs. If we are unable to grow effectively then we may not be able to exploit market opportunities or develop new products, and we may fail to satisfy customer requirements, maintain product quality, execute our business plans or respond to competitive pressures.

We are subject to additional regulatory compliance requirements, including Section 404 of the Sarbanes-Oxley Act of 2002. If we fail to maintain an effective system of internal controls, we may not be able to accurately report our consolidated financial results or prevent fraud. We previously identified a material weakness in our internal control over financial reporting and cannot guarantee we will not have a future material weakness.

We have a short history as a public company. Although our management team and other company personnel devote substantial time to regulatory compliance, we may not effectively or efficiently manage our maturation as a public company. Additionally, we have incurred and will continue to incur significant legal, accounting and other expenses related to compliance with laws, regulations and standards applicable to publiccompanies.

We expect rules and regulations such as the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, to continue increasing the time and costs we must devote to compliance as well as to other activities. For example, Section 404 of the Sarbanes-Oxley Act, or Section 404, requires management to report on, and after we no-longer qualify as an emerging growth company that our independent registered public accounting firm attest to, the effectiveness of our internal controls over financial reporting. Effective internal controls are necessary for us to provide reliable financial reports and prevent fraud. Section 404 compliance will continue to divert resources and take significant time and effort. We may be unable to successfully complete the procedures, certifications and attestation requirements of Section 404 in a timely manner. We or our independent registered public accounting firm may find internal controls that need improvement or may uncover a material weakness. A material weakness, even if quickly remedied, could reduce the market’s confidence in our financial statements and harm our stock price. Any inability to provide reliable financial reports or prevent fraud could harm our business.

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We may be unable to effectively implement, or effectively implement in a timely manner, the controls and employee trainingnecessary to ensure continued compliance with the Sarbanes-Oxley Act and other regulatory and reporting requirements.In addition, the Sarbanes-Oxley Act requirements may be modified, supplemented or amended from time to time, in which case implementing the requisite changes may take us significant time and may require additional controls and employee training. Our growth will challenge our ability to maintain these internal control and disclosure standards. If we fail to successfully complete the procedures, certifications and attestation requirements of Section 404, or if our chief executive officer, chief financial officer or independent registered public accounting firm determine that our internal control over financial reporting is not effective as defined under Section 404, we could be subject to sanctions or investigations by the Securities and Exchange Commission, or SEC, or by other regulatory authorities. Investor perceptions of our company may suffer, likely causing a decline in our stock’s market price. We may not be able to fully comply with the requirements of the Sarbanes-Oxley Act or management or our independent registered public accounting firm may conclude that our internal controls will not be effective in future periods. Regardless of compliance with Section 404, any failure of our internal controls could have a material adverse effect on our stated operating results and harm our reputation.

A material weakness is a deficiency, or a combination of deficiencies, in internal controls over financial reporting. A consequence of a material weakness is a reasonable possibility that a material misstatement in our annual or interim consolidated financial statements will not be prevented or detected on a timely basis.

In the course of preparing our consolidated financial statements in prior years, we, in conjunction with our independent registered public accounting firm, identified errors which, combined with other identified control deficiencies, were considered to indicate a material weakness in our internal control over financial reporting. These errors related to accounting and financial disclosure of complex accounting matters related to the cash flow statement presentation of lease incentives in our consolidated interim financial statements for the nine months ended September 30, 2015. In 2016, we identified that we did not reflect the correction of the identified error in our consolidated interim financial statements for the nine months ended September 30, 2015 on the statement of cash flows in our Quarterly Report on Form 10-Q filed with the SEC on November 7, 2016.

We remediated this material weakness as of December 31, 2018, including increasing the depth and experience in our accounting and finance organization, as well as designing and implementing improved processes and internal controls. However, our remediation may not be effective in future periods or may not prevent other material weaknesses or significant deficiencies in our internal control over financial reporting from arising in the future.

We are currently subject to securities class-action litigation and may be subject to similar or other litigation in the future, all of which will require significant management time and attention, result in significant legal expenses and may result in unfavorable outcomes, which may have a material adverse effect on our business, operating results and financial condition, and negatively affect the price of our common stock.

We are, and may in the future become, subject to various legal proceedings and claims that arise in or outside the ordinary course of business. For example, we currently have securities class-action complaints pending against us, our chief executive officer, chief operations officer and former chief financial officer, asserting that we made false or misleading statements in our financial statements, press releases and conference calls during the applicable class periods. The complaints each seek monetary damages, costs and expenses. For more information, see Note 11 of our consolidated financial statements included elsewhere in this report.

We cannot predict the outcome of these proceedings or provide an estimate of potential damages, if any. We believe that the claims in the securities class actions are without merit and intend to defend against them vigorously. Regardless, failure by us to obtain a favorable resolution of the claims set forth in the complaints could require us to pay damage awards or otherwise enter into settlement arrangements for which our insurance coverage may be insufficient. Our assets could even be insufficient to cover amounts that exceed our insurance coverage. Any such damage awards or settlement arrangements in current or future litigation could have a material adverse effect on our business, operating results or financial condition. Even if plaintiffs’ claims are not successful, the litigation will have substantial costs and could significantly and adversely impact our reputation and divert management’s attention and resources, all of which could have a material adverse effect on our business, operating results and financial condition and negatively affect the price of our common stock. In addition, such lawsuits may make it more difficult for us to finance our operations in the future.

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Our business could be negatively affected as a result of actions of activist stockholders.

We may be subject to actions or proposals from stockholders that may not align with our business strategies or the interests of our other stockholders. Responding to any such actions or proposals could be costly and time-consuming, disrupt our business operations and divert the attention of our board of directors, management and employees from pursuing our business strategies.

Activist stockholders could create uncertainties as to the future direction of our business. Our competitors could exploit the uncertainties, potentially causing us to lose business or create a perception of instability, which could make it more difficult for us to attract and retain qualified personnel. Similarly, any proxy contest for the election of directors at our annual meeting of stockholders would require us to incur significant legal fees and proxy solicitation expenses and require significant time and attention by our board of directors and management. Any such activist events or perceived uncertainties as to our future direction may affect our relationships with our customers, vendors, channel partners, investors or other third parties and affect the market price and volatility of our stock.

If we fail to retain finance personnel or fail to maintain our financial reporting systems and infrastructure, we may be unable to timely and accurately report our financial results or comply with the requirements of being a public company, including compliance with the Sarbanes-Oxley Act and SEC reporting requirements, which in turn could significantly harm our reputation and our business.

We have hired personnel with financial reporting and Sarbanes-Oxley Act compliance expertise. Our inability to retain these personnel could adversely impact our ability to timely and accurately prepare and file our financial statements, as well as adversely affect our future financial statements because replacement employees require time and training to learn our business and operating procedures. If our finance and accounting organization is unable, for any reason, to meet the demands of being a public company then the quality and timeliness of our financial reporting may suffer, which could result in errors, filing delays and/or material weaknesses in our internal controls. The consequences of errors or delays in our reported financial statements could cause the trading price of our common stock to decline and could harm our business, operating results and financial condition.

We may need to raise additional capital which may not be available on favorable terms, if at all, causing dilution to stockholders, restricting our operations or adversely affecting our ability to operate our business.

In the course of running our business we may need to raise capital, potentially diluting our stockholders. In December 2019, we issued and sold a total of $86.3 million in aggregate principal amount of 2.00% convertible senior notes due 2026, or the 2019 Notes, and we may in the future engage in additional equity, equity-linked or debt financings to secure additional funds. If our financing needs are driven by unforeseen circumstances, such as unforeseen expenditures or if our operating results are worse than we expect, then we may not be able to raise capital on favorable terms, if at all. Debt financing, if available, may include covenants limiting or restricting our ability to take specific actions such as incurring additional debt, expending capital or declaring dividends, or which impose financial covenants that limitour ability to achieve our business objectives. If we need but cannot raise additional capital on acceptable terms then we may not be able to meet our business objectives, our stock price may fall, and you may lose some or all of yourinvestment.

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A breach of our security systems could have a material adverse effect on our business.

We use security systems to maintain our facility’s physical and information-technology security and to protect our proprietary and confidential information, including that of our customers, suppliers and employees. Accidental or willful security breaches or other unauthorized access to our facilities or information systems, or breaches due to viruses, loggers, or other malfeasant code in our data or software, or other causes, including phishing, social engineering, and employee or contractor negligence or malfeasance, could compromise access to and the integrity of this information. The consequences of loss and possible misuse of our proprietary and confidential information could include, among other things, unfavorable publicity, damage to our reputation, difficulty marketing or selling our products, customer allegations of breach-of-contract, loss or theft of intellectual property, litigation by affected parties and possible financial liabilities for damages, any of which could have a material adverse effect on our business, financial condition, reputation and relationships with customers and partners. We also rely on third-party providers of corporate infrastructure services relating to, among other things, human resources, electronic communication services and financial functions, and we are therefore dependent on the security systems of these third-party providers. These third-party providers also face several risks of security breaches, and our ability to monitor their security is limited. Any security breaches or other unauthorized access to our service-providers’ systems or viruses, loggers, or other malfeasant code in their data or software could expose us to loss or misappropriation of, or unauthorized use or disclosure of, confidential and proprietary information. Because the techniques used to obtain unauthorized access to or sabotage security systems change frequently and are often not recognized until after an attack, we may be unable to anticipate the techniques or implement adequate preventative measures, thereby exposing us to material adverse effect on our business, operations and financial condition.

We may incur significant costs in an effort to detect and prevent security breaches and other security-related incidents. In the event of an actual or perceived security breach, we could be required to expend additional significant capital and other resources in an effort to prevent further breaches. Moreover, we could be required or otherwise find it appropriate to expend significant capital and other resources to respond to, notify third parties of, and otherwise address the breach and its root cause.

Claims relating to an actual or perceived security breach may not be adequately covered by insurance, and may result in increased costs for insurance or insurance not being feasible at all.

Our business operations could be disrupted by natural disasters.

An earthquake, fire, flood, pandemic or other natural or manmade disaster could decrease demand for our products, disable our facilities, disrupt operations, or cause catastrophic losses. We have facilities in areas with a known history of seismic activity, such as our headquarters in Seattle, Washington. We also have facilities in areas with a known history of flooding, such as our office in Shanghai, China. We have a wafer testing and dicing subcontractor in Thailand, a region with a known, and recent, history of flooding. A loss at or of any of these or other of our or our suppliers’ facilities could disrupt operations, delay production and shipments, reduce revenue and engender potentially large expenses to repair or replace the facility. As a specific example, in 2011 and 2012 floods in Thailand disrupted our subcontractor’s facility for approximately six months. During that time, we relied on a secondary subcontractor that had longer lead times for, and decreased yield of, our endpoint IC wafers. We do not carry insurance policies that cover potential losses caused by earthquakes, floods or other disasters.

In December 2019, the COVID-19 virus emerged in China and as of the date of this report is continuing to spread globally. The outbreak has resulted in travel and work restrictions within China and globally and disrupted our ability to test, produce distribute and sell products. It has disrupted operations of our endpoint IC customers, as well as manufacturers of products that are tagged with our endpoint ICs, and may impact other of our products as well. The full extent to which the COVID-19 virus outbreak will negatively affect the global economy, demand for our products, our ability to produce and distribute products, costs for producing our products and ultimately our revenues and results of operations, are uncertain at the time of this report. Any prolonged slowdown caused by COVID-19 could negatively affect our revenues and results of operations for some time.

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Our ability to use net operating losses to offset future taxable income may be limited.

As of December 31, 2019 we had federal net operating loss carryforwards, or NOLs, of $179.1 million and federal research and development credit carryforwards of $12.0 million which we may use to reduce future taxable income or offset income taxes due. We have established a valuation allowance against the carrying value of these deferred tax assets. The tax loss and research and development credit carryforwards begin expiring in 2020. Insufficient future taxable income will adversely affect our ability to utilize these NOLs and credit carryforwards. Reductions in corporate tax rates may also reduce our ability to utilize the NOLs. In addition, under Sections 382 and 383 of the U.S. Internal Revenue Code, or the Code, a corporation that experiences a more-than 50% ownership change over a three-year testing period is limited in its ability to use its pre-change NOLs and other tax assets to offset future taxable income or income taxes due. Our existing NOLs and credit carryforwards may be subject to limitations arising from previous ownership changes; if we undergo a future ownership change then our ability to use our NOLs and credit carryforwards could be further limited by Sections 382 and 383 of the Code. Future changes in our stock ownership, the causes of which may be outside our control, could result in an ownership change under Sections 382 and 383 of the Code. Our NOLs may also be impaired under state law. As a result of these limitations, we may not be able to utilize a material portion of, or possibly any of, the NOLs and credit carryforwards.

We could be subject to additional income tax liabilities.

We are subject to income taxes in the United States and certain foreign jurisdictions. During the ordinary course of business we use significant judgment in evaluating our worldwide income-tax obligations and we conduct many transactions for which the ultimate tax determination is uncertain. Additionally, our effective tax rates could be adversely affected by earnings being lower than anticipated in countries where we have lower statutory rates and higher than anticipated in countries where we have higher statutory rates, by changes in currency exchange rates, by changes in the valuation of our deferred tax assets and liabilities or by changes in the relevant tax, accounting and other laws, regulations, principles and interpretations. We are subject to audit in various jurisdictions and these jurisdictions may assess additional income tax against us. Although we believe our tax determinations are proper, the final determination of any tax audits and possible litigation could be materially different from our historical income-tax provisions and accruals. The results of an audit or litigation could have a material effect on our operating results or cash flows in the period or periods for which that determination is made.

Taxing authorities may successfully assert that we should have collected or in the future should collect sales and use, value-added or similar taxes, and we could be subject to liability with respect to past or future sales, which could adversely affect our operating results.

We do not collect sales and use, value-added or similar taxes in all jurisdictions in which we have sales, based on our belief that such taxes are either not applicable or an exemption from such taxes applies. Sales and use, value-added and similar tax laws and rates vary greatly by jurisdiction. Certain jurisdictions in which we do not collect such taxes may assert that such taxes are applicable, which could result in tax assessments, penalties and interest, and we may be required to collect such taxes in the future, including as a result of a change in law. Such tax assessments, penalties and interest or future requirements may adversely affect our operating results.

Risks Relating to Owning Our Common Stock

The market price of our common stock has been and will likely continue to be volatile, and the value of your investment could decline significantly.

There was no public market for our common stock prior to our initial public offering. Since July 2016, when we sold shares of our common stock in our initial public offering through December 31, 2019, our stock price has ranged from $9.95 to $60.85. Securities of companies similar to ours also experience significant price and volume fluctuations. The following factors, in addition to other risks described in this report, may have a significant effect on the trading price of our common stock:

• price and volume fluctuations in the overall stock market;

• changes in operating performance, stock market valuations, and volatility in the market prices of other technology companies generally, or those in our industry in particular;

• actual or anticipated quarterly variations in our results of operations or those of our competitors;

• actual or anticipated changes in our growth rate relative to our competitors;

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• delays in end-user deployments of RAIN systems;

• announcements by us or our competitors of acquisitions, new products, significant contracts, commercial relationships or capital commitments;

• supply interruptions;

• developments relating to intellectual property rights or in disputes relating to those rights;

• our ability to develop and market new and enhanced products on a timely basis;

• commencement of, or our involvement in, litigation;

• changes in our board of directors or management;

• changes in governmental regulations or in the status of our regulatory approvals;

• unstable regional political and economic conditions;

• the trading volume of our stock;

• actual or perceived security breaches;

• limited public float;

• any future sales of our common stock or other securities;

• financial analysts dropping or reducing their coverage of us; changes in financial estimates by analysts who do cover us; or our failure to meet analyst estimates or investor expectations;

• fluctuations in the values of companies investors perceive to be comparable to us;

• the financial projections we may provide to the public, any changes in these projections or our failure to meet these projections; and

• general economic conditions and slow or negative growth of markets in which we operate.

The market for technology companies like us has experienced extreme price and volume fluctuations often unrelated or disproportionate to the operating performance of those companies. Broad market and industry factors also affect the trading price of our common stock, often regardless of our actual operating performance. Securities class-action litigation is often instituted against companies whose stock prices have declined, as it has been against us. That litigation has already resulted in substantial costs and a diversion of management’s attention and resources, and those costs and diversion could escalate significantly. For further information regarding this litigation risk, please refer to Note 11 of our consolidated financial statements included elsewhere in this report.

If securities or industry analysts do not publish research reports about our business, or if they issue an adverse opinion about our business, the trading price of our common stock and trading volume could decline.

The trading market for our common stock is influenced by the research and reports that industry or securities analysts publish about us or our market. If one or more of the analysts who cover us issues an adverse opinion about us, the trading price of the notes and our common stock, in each case, could decline. If one or more of these analysts stops covering us or fails to regularly publish reports on us, we could lose visibility in the financial markets, which in turn could cause the trading price or trading volume of our stock price to decline.

Transactions relating to the 2019 Notes may affect the value of our common stock.

If the 2019 Notes are converted by holders, we have the ability under the indenture for the 2019 Notes to deliver cash, common stock or any combination of cash or common stock, at our election upon conversion of the 2019 Notes. If we elect to deliver common stock upon conversion of the 2019 Notes, it would dilute the ownership interests of our existing stockholders. Any sales in the public market of the common stock issuable upon such conversion could adversely affect prevailing market prices of our common stock. Anticipated future conversions of such 2019 Notes into shares of our common stock could depress the price of our common stock. Certain holders of the 2019 Notes may also engage in short selling to hedge their position in the 2019 Notes, which could decrease the price of our common stock.

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Additionally, in connection with the issuance of the 2019 Notes, we entered into privately negotiated capped call transactions with certain financial counterparties. The capped call transactions are generally designed to reduce potential dilution to our common stock upon any conversion or settlement of the 2019 Notes or offset any cash payments we are required to make in excess of the principal amount of converted 2019 Notes, as the case may be, with such reduction or offset subject to a cap based on the cap price. From time to time, the financial counterparties to the capped calls may modify their hedge positions by entering into or unwinding various derivative transactions with respect to our common stock or purchasing or selling our common stock or other securities of ours in secondary market transactions prior to the maturity of the capped calls. This activity could cause a decrease in the market price of our common stock.

Future sales of our common stock in the public market could cause our stock price to fall.

Significant sales of our stock, especially by our directors, executive officers and principal stockholders, or the perception that these sales might occur, could cause the trading price of the notes and our common stock to decline. These sales, or the possibility that they may occur, also may make it more difficult for us to sell equity securities at a time and price acceptable to us.

We may in the future issue additional shares of common stock or other equity or debt securities convertible into common stock in connection with a financing, acquisition, litigation settlement, employee arrangement or otherwise. Any such issuance, including any issuance of shares upon the conversion of the notes, could result in substantial dilution to our existing stockholders and could cause our stock price to decline.

Our principal stockholders and management own a significant percentage of our stock and are able to exercise significant influence over matters subject to stockholder approval.

As of December 31, 2019, our executive officers, directors and principal stockholders, together with their respective affiliates, beneficially owned approximately 26.0% of our capital stock. As a result, our executive officers, directors and principal stockholders may be able to significantly influence, in their capacity as stockholders, matters requiring approval by our stockholders, including electing directors and approving mergers, acquisitions or other extraordinary transactions. They may have interests that differ from yours and may vote in a way with which you disagree, and which may be adverse to your interests. This concentration of ownership could have the effect of delaying or preventing a change in our control or otherwise discouraging a potential acquirer from attempting to obtain control of us, which in turn could have a material adverse effect on our stock price and may prevent attempts by our stockholders to replace or remove our board of directors or management.

Servicing the 2019 Notes may require a significant amount of cash, and we may not have sufficient cash flow or the ability to raise the funds necessary to satisfy our obligations under the 2019 Notes, and our current and future indebtedness may limit our operating flexibility or otherwise affect our business.

Our ability to make scheduled payments of the principal of, to pay interest on or to refinance any current or future indebtedness, including the 2019 Notes, or to make cash payments in connection with any conversion of 2019 Notes or upon any fundamental change if holders require us to repurchase their 2019 Notes for cash, depends on our future performance, which is subject to economic, financial, competitive and other factors beyond our control. Our business may not generate cash flow from operations in the future sufficient to service our indebtedness and make necessary capital expenditures. If we are unable to generate such cash flow, we may be required to adopt one or more alternatives, such as selling assets, restructuring indebtedness or obtaining additional equity capital on terms that may be onerous or highly dilutive. Our ability to refinance any of our indebtedness, including the 2019 Notes, will depend on the capital markets and our financial condition at such time. We may not be able to engage in any of these activities or engage in these activities on desirable terms, which could result in a default on our debt obligations. In addition, our existing and future indebtedness could have important consequences to our stockholders and significant effects on our business. For example, it could:

• make it more difficult for us to satisfy our debt obligations, including the 2019 Notes;

• increase our vulnerability to general adverse economic and industry conditions;

• require us to dedicate a substantial portion of our cash flow from operations to payments on our indebtedness, thereby reducing the availability of our cash flow to fund working capital and other general corporate purposes;

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• limit our flexibility in planning for, or reacting to, changes in our business and the industry in which we operate;

• restrict us from exploiting business opportunities;

• place us at a competitive disadvantage compared to our competitors that have less indebtedness; and

• limit our availability to borrow additional funds for working capital, capital expenditures, acquisitions, debt service requirements, execution of our business strategy or other general purposes.

Anti-takeover provisions in our charter documents and under Delaware or Washington law could make an acquisition of us difficult, limit attempts by our stockholders to replace or remove our current management and limit our stock price.

Provisions of our certificate of incorporation and our bylaws may delay or discourage transactions involving an actual or potential change in our control or change in our management, including transactions in which stockholders might otherwise receive a premium for their shares, or transactions that our stockholders might otherwise deem to be in their best interests. Therefore, these provisions could adversely affect our stock price. Among other things, our certificate of incorporation and bylaws:

• permit our board of directors to issue up to 5,000,000 shares of preferred stock, with any rights, preferences and privileges as they may designate;

• provide that the authorized number of directors may be changed only by resolution of the board of directors;

• provide that all vacancies, including newly created directorships, may, except as otherwise required by law, be filled by the affirmative vote of a majority of directors then in office, even if less than a quorum;

• divide our board of directors into three classes;

• restrict the forum for certain litigation against us to Delaware;

• require that any action taken by our stockholders be effected at a duly called annual or special meeting of stockholders and not by written consent;

• provide that stockholders seeking to present proposals before a meeting of stockholders or to nominate candidates for election as directors at a meeting of stockholders must provide notice in writing in a timely manner, and also specify requirements as to the form and content of a stockholder’s notice;

• do not provide for cumulative voting rights (therefore allowing the holders of a plurality of the shares of common stock entitled to vote in any election of directors to elect all of the directors standing for election, if they should so choose);

• provide that special meetings of our stockholders may be called only by the chair of the board, our chief executive officer or by the board of directors; and

• provide that stockholders will be permitted to amend our bylaws only upon receiving at least two-thirds of the total votes entitled to be cast by holders of all outstanding shares then entitled to vote generally in the election of directors, voting together as a single class.

In addition, because we are incorporated in Delaware, we are governed by the provisions of Section 203 of the Delaware General Corporation Law, which generally prohibits a Delaware corporation from engaging in any of a broad range of business combinations with any “interested” stockholder for a period of three years following the date on which the stockholder became an “interested” stockholder. Likewise, because our principal executive offices are located in Washington, the anti-takeover provisions of the Washington Business Corporation Act may apply to us under certain circumstances now or in the future. These provisions prohibit a “target corporation” from engaging in any of a broad range of business combinations with any stockholder constituting an “acquiring person” for a period of five years following the date on which the stockholder became an “acquiring person.”

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Our bylaws provide that the Court of Chancery of the State of Delaware is the exclusive forum for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our bylaws provide that, unless we otherwise consent in writing, the Court of Chancery of the State of Delaware is the exclusive forum for any derivative action or proceeding brought on our behalf, any action asserting a breach of fiduciary duty, any action asserting a claim against us arising pursuant to the Delaware General Corporation Law, our certificate of incorporation or our bylaws or any action asserting a claim against us that is governed by the internal affairs doctrine. The choice of forum provision may limit stockholders’ ability to bring a claim in a judicial forum favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits against us and our directors, officers and other employees. Alternatively, if a court were to find the choice of forum provision contained in our bylaws to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could adversely affect our business and financial condition.

As an emerging growth company within the meaning of the Securities Act, we utilize certain modified disclosure requirements, and those requirements may make our common stock less attractive to investors.

We are an emerging growth company, and for as long as we remain an emerging growth company we may choose to take advantage of exemptions from some reporting requirements applicable to other public companies but not to emerging growth companies, including:

• not being required to have our independent registered public accounting firm audit our internal control over financial reporting under Section 404 of the Sarbanes-Oxley Act;

• reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements; and

• exemptions from the requirements to hold a nonbinding advisory vote on executive compensation and receive stockholder approval of any golden parachute payments not previously approved.

We plan in our filings with the SEC to continue to use the modified disclosure requirements available to emerging growth companies. As a result, our stockholders may not have access to certain information they may deem important.

We can remain an emerging growth company until the earliest of:

• December 31, 2021;

• the last day of the first fiscal year in which our annual gross revenue exceeds $1 billion;

• the date that we become a “large accelerated filer” as defined in Rule 12b-2 under the Exchange Act, which would occur if the market value of our common stock held by non-affiliates exceeds $700 million as of the last business day of our most recently completed second fiscal quarter; or

• the date on which we have issued more than $1 billion in non-convertible debt during the preceding three-year period.

We have incurred and, in the future, will incur higher costs by being a public company.

We have incurred significant legal, accounting and other costs associated with public-company reporting requirements. Those costs will increase as we transition to no-longer being an emerging growth company. For as long as we remain an emerging growth company, we will use the exemption from the requirement under Section 404 that our independent registered public accounting firm attest to the effectiveness of our internal control over financial reporting. At the time when our independent registered public accounting firm is required to assess our internal control over financial reporting, the cost of our compliance with Section 404 will increase. If we are unable to comply with those requirements of Section 404 applicable to us, or if we or our independent registered public accounting firm identify deficiencies in our internal control over financial reporting, we could incur sanctions or investigations by the SEC or other regulatory authorities which would require additional financial and management resources and further increase costs, all of which could cause the market price of our stock to decline.

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We have and will continue to incur costs associated with recently adopted corporate governance requirements, including those of the SEC and The Nasdaq Global Select Market. We expect those governance requirements to lead to ongoing legal and financial costs and make some activities more time consuming and costly. We also expect thoserequirements to increase the difficulty and expense for us to obtain director and officer liability insurance, and we may need to accept reduced policy limits and coverage or pay substantially higher costs to obtain similar or higher coverage to what we have today. As a result, we may find it difficult to attract and retain qualified persons to serve on our board of directors or as executive officers or may need to pay higher compensation to attract and retain them. Although we monitor developments with respect to thoserequirements, we cannot predict or estimate the additional costs we may incur or the timing of such costs.

Item 1B. Unresolved Staff Comments

Not applicable.

Item 2. Properties

We have several operating leases for office space, which are summarized as of December 31, 2019 in the table below. We believe that our facilities are adequate for our current needs.

Location	Purpose	Approximate Square Feet		Principal Lease Expiration Dates
Seattle, Washington	Corporate headquarters		109,000	2026
Seattle, Washington	Design laboratory		11,000	2021
Shanghai, China	General office space		4,000	2021

We hold a lease for approximately 39,000 square feet of commercial office space in Seattle, Washington that expires in 2023. We have sublet the entirety of this office space through the expiration date. We also lease offices in Thailand. For more information about our lease commitments, please refer to Note 10 to our consolidated financial statements included elsewhere in this report.

Item 3. Legal Proceedings

In the normal course of business, we may be named as a party to various legal claims, actions and complaints. We cannot predict whether any resulting liability will have a material adverse effect on our financial position, results of operations, cash flows, market position or stock price.

Stockholder Litigation

Between July 2018 and December 2019, four class action complaints for violation of federal securities laws (one of which was subsequently voluntarily dismissed by the plaintiffs) and three shareholder derivative actions were filed against us and certain of our officers and, in the derivative actions, against certain of our directors. For further information on these complaints, please refer to Note 11 of our consolidated financial statements included else where in this report.

Patent Litigation

On June 6, 2019, we filed a patent infringement lawsuit against a competitor, NXP, USA Inc., and on October 4, 2019, NXP USA, Inc. and its parent NXP Semiconductors N.V., filed a patent infringement lawsuit against Impinj. The outcome of this patent litigation remains uncertain, and we may file additional lawsuits against NXP USA and/or its parent or they may file additional lawsuits against us. For further information on these lawsuits, please refer to Note 11 of our consolidated financial statements included elsewhere in this report.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

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

Market Information

Our common stock has traded on The Nasdaq Global Select Market under the symbol “PI” since July 21, 2016.

Holders of Record

As of January 31, 2020, there were 57 holders of record of our common stock. The actual number of stockholders is greater than the number of holders of record and includes stockholders who are beneficial owners but whose shares are held in street name by brokers and other nominees. The number of holders of record also does not include stockholders whose shares may be held in trust by other entities.

Dividends

We have never declared or paid a cash dividend on our common stock and we intend to retain all available funds and any future earnings to fund the development and growth of our business. We therefore do not anticipate paying any cash dividends on our common stock for the foreseeable future. In addition, future debt instruments, if any, may materially restrict our ability to pay dividends on our common stock. Any future determination to pay dividends on our common stock will depend at least on our results of operations, our financial condition and liquidity requirements, restrictions that may be imposed by applicable law or by contracts, and any other factors that our board of directors may consider relevant.

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Performance Graph

The following graph compares our cumulative total stockholder return on Impinj’s common stock with the NASDAQ Composite Index and the Philadelphia Semiconductor Index:

This graph covers the period from July 21, 2016, using the closing price for the first day of trading immediately following the effectiveness of our initial public offering per SEC regulations, through December 31, 2019. This graph assumes that the value of the investment in Impinj’s common stock and each index (including reinvestment of dividends) was $100 on July 21, 2016.

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Item 6. Selected Financial Data

You should read the selected financial data set forth below in conjunction with the information in “Management’s Discussion and Analysis of Financial Condition and Results of Operations”, our audited consolidated financial statements and related notes included elsewhere in this report and our previous financial statements, the latter not included in this report.

	Year Ended December 31,
	2019			2018			2017			2016			2015
	(in thousands, except per share data)
Statements of Operations Data:
Revenue	$	152,836		$	122,633		$	125,300		$	112,287		$	78,479
Cost of revenue		78,834			64,352			60,359			52,834			37,633
Gross profit		74,002			58,281			64,941			59,453			40,846
Operating expenses:
Research and development expense		38,880			34,168			32,220			25,185			17,579
Sales and marketing expense		32,642			32,934			31,579			22,330			14,579
General and administrative expense		24,141			22,299			18,161			12,426			7,087
Restructuring costs		—			3,749			—			—			—
Total operating expenses		95,663			93,150			81,960			59,941			39,245
Income (loss) from operations		(21,661	)		(34,869	)		(17,019	)		(488	)		1,601
Other income, net		1,242			808			508			616			673
Interest expense		(1,794	)		(1,403	)		(908	)		(1,633	)		(1,208	)
Loss on debt extinguishment		(576	)		—			—			—			—
Income (loss) before income taxes		(22,789	)		(35,464	)		(17,419	)		(1,505	)		1,066
Income tax benefit (expense)		(198	)		233			97			(168	)		(166	)
Net income (loss)		(22,987	)		(35,231	)		(17,322	)		(1,673	)		900
Less: Accretion of preferred stock		—			—			—			(6,258	)		(11,301	)
Net loss attributable to common stockholders	$	(22,987	)	$	(35,231	)	$	(17,322	)	$	(7,931	)	$	(10,401	)
Net loss per share attributable to common stockholders — basic and diluted	$	(1.05	)	$	(1.65	)	$	(0.84	)	$	(0.74	)	$	(2.67	)
Weighted-average shares used to compute net loss per share attributable to common stockholders — basic and diluted		21,847			21,334			20,680			10,778			3,893

	As of December 31,
	2019			2018			2017			2016			2015
	(in thousands)
Balance Sheet Data (1):
Cash, cash equivalents and short-term investments	$	116,495		$	56,073		$	58,116		$	100,541		$	10,121
Working capital		157,272			98,189			109,879			123,345			18,468
Total assets		215,046			145,069			152,034			167,536			52,848
Total long-term debt		50,876			23,563			9,588			12,265			15,910
Accumulated deficit		(262,743	)		(239,756	)		(204,525	)		(187,203	)		(185,315	)
Total stockholders’ equity (deficit)	$	125,239		$	97,883		$	118,942		$	124,023		$	(85,035	)
(1) The summary balance sheet data for the year ended December 31, 2019 reflects the adoption of Accounting Standard Update ("ASU") No. 2016-02, Leases ("Topic 842"). See Note 2 of the notes to our consolidated financial statements included elsewhere in this report for the impact of adoption. The summary balance sheets for the years ended December 2018, 2017, 2016 and 2015 do not reflect the adoption of Topic 842.

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

You should read the following discussion and analysis together with our consolidated financial statements and the related notes to those statements included elsewhere in this report. This discussion contains forward-looking statements that involve risks and uncertainties. As a result of many factors, such as those set forth under “Risk Factors” and elsewhere in this report, our actual results may differ materially from those anticipated in these forward-looking statements.

Overview

Our vision is digital life for everyday items. We are driving a future in which everyday physical items are wirelessly connected to digital counterparts, digital twins, in the cloud, and in which businesses and people engage with those everyday physical items via their digital twins. Our mission is to deliver a platform that powers that item-to-cloud connectivity and to enable developers to innovate Internet-of-Things, or IoT, applications on our platform. Today, we deliver the identity, location and authenticity of billions of physical items; we believe our future is delivering the identity, location and authenticity of trillions of everyday items and enabling those cloud-based digital twins, each storing an individual item’s ownership, history and links, and enabling ubiquitous access to them. We believe the item-to-cloud connectivity we will deliver will enhance businesses efficiencies and commerce and, ultimately, improve peoples’ lives.

Our platform connects individual items, capturing and delivering data about each item from manufacturing, through distribution to sale. We and our channel partners connect those items via a miniature radio chip embedded in the item or in its packaging, reading and delivering the item’s unique identity, location and authenticity to business and consumer applications. To date, we have enabled connectivity to more than 30 billion items, enabling retailers, hospitals, airlines, automotive manufacturers, logistics providers, shippers and business in many other industries to derive timely business value from those connected items. We believe our opportunity is to ultimately connect trillions of everyday items, and to deliver valuable information about those items not just to businesses, but also to everyday people, extending and delivering an item’s digital life to the person that buys and owns the item.

Our platform comprises three layers: (1) endpoint integrated circuits, or ICs, (2) connectivity and (3) software that together deliver item data to business and consumer applications. We link the layers of our platform to deliver advanced capabilities and performance that surpasses mix-and-match solutions built from competitor products. Within each layer we sell one or more product families.

Factors Affecting Our Performance

Investing in Growth

We have invested and plan to continue investing in research and development to enhance and extend our platform, including enhancing existing products, introducing new products and tightening the platform linkages between our product offerings. We plan to enhance and expand our software, including its deployment models, functionalities, algorithms and cloud-service offerings. We plan to enhance and expand our readers and gateways and how we leverage them for platform deployments in retail, supply chain and logistics and other industries. We also plan to continue developing next-generation reader and endpoint ICs.

We have invested and plan to continue investing in sales and marketing to grow our sales reach, expand our market opportunities, deepen our integrations with our supply-chain partners and accelerate the development and adoption of solutions based on our platform.

Most of our investments precede any sales benefit from the investment, and in some instances, we may never see a sales benefit. The potential causes of the latter are many, including the market not being receptive to our product or sales approach, late or failed product development, personnel departures or other causes. We sometimes enter into arrangements with end users, vendors or channel partners for them to fund a portion of our investment, but even in those instances the results of our investments remain uncertain, and in some instances we may be required to refund the investment if the development is unsuccessful or the market opportunity fails to materialize. In some instances, we delay or cancel investments without or until we obtain such funding. The outcome of any investment is almost always uncertain, and if our results don’t meet our or your expectations then our operating results, profitability and stock price may be adversely affected.

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Market Adoption

Our financial performance depends on the pace, scope and depth of end-user adoption of our products in multiple industries, especially the retail industry which is our largest market. That pace, scope and depth remains uncertain, potentially causing large fluctuations in our operating results. For example, in 2015 and 2016 several major retailers and brand owners initiated deployments that significantly increased our endpoint IC sales, exceeding our expectations and those of our industry’s analysts and lengthening our lead times. In 2017 we invested in internal endpoint IC inventory to reduce those lead times, meet forecasted demand and improve our ability to deliver in the event of continued demand growth. However, in the second half of 2017 the endpoint IC growth rate slowed, which we believe was due to several factors including, but not limited to, delays in new deployments and in planned expansions at several large retailers. That decelerating growth rate engendered an endpoint IC channel inventory correction that negatively impacted our operating results for several subsequent quarters. In response, we reduced our internal endpoint IC inventory in the second half of 2018 and throughout 2019. Given the uncertainties in our market, we cannot assure you that we have appropriate internal inventory levels or that we will not experience inventory shortfalls or overages in the future. We also cannot assure you that we will be able to maintain or grow the market share of any of our products, whether as a result of insufficient inventory, competitors copying our products, competition generally or for a host of other reasons.

Regardless of the uneven pace of retail industry adoption, we believe the underlying, long-term trend is continued RAIN adoption by the retail industry. Our new M700 endpoint IC product will offer customers significant performance and costs advantages. However, delays in production or qualification may impact market share at these and other retail deployments in the near term.

We also believe that expanding retail deployments foster RAIN adoption in other markets. For a non-retail example of growing RAIN adoption, our reader and gateway sales in the second half of 2017 and our gateway sales in 2019 exceeded our expectations, in this case due to supply-chain end users deploying shipment-verification and asset-tracking use cases that demand real-time fixed reading. We also see growing RAIN adoption in the aviation industry, led by baggage tagging. We believe growing adoption will increase the value of our platform. Consequently, we intend to continue introducing new products to improve our market position and further grow both retail and overall market adoption. However, as noted below, at the current stage of RAIN adoption our revenue could decline on a quarterly or annual basis due to fluctuations caused by large-scale deployments by a limited number of large end-users.

If RAIN market adoption, and adoption of our platform products specifically, does not meet our expectations then our growth prospects and operating results will be adversely affected. If we reduce prices to win opportunities, then our gross margins may be negatively affected. If we are unable to meet end-user or customer volume or performance expectations, then our business prospects may be adversely affected. Because we sell our products through our channel partners, we have limited ability to determine end-user demand and we may incorrectly predict that demand or be unable to identify market shifts in a timely fashion, potentially affecting our business adversely. In contrast, if our endpoint IC, reader IC, module, reader, gateway or software sales exceed expectations, then our revenue and profitability may be positively affected.

Timing and Complexity of Customer Deployments

From 2010 to 2019, our endpoint IC unit sales volumes increased at a compounded annual growth rate of 28%, indicating growing adoption of RAIN-based solutions. However, the pace at which end users adopt RAIN has been uneven and unpredictable in scope and timing. For example, our endpoint IC unit sales volumes increased significantly in 2016, declined in the second half of 2017 and in the first half of 2018 and returned to growth in the second half of 2018 and in 2019 (the latter albeit not at the same pace as in 2016). Short-term demand will remain unpredictable in scope and timing. Longer term, we believe our opportunity and our market will continue to grow, but we cannot predict whether historical annual growth rates are indicative of the pace of that future growth.

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Further, although we promote our platform as an integrated offering, we sell our products individually, and end users often use only certain of our products. For any given end-user solution, whether an end user chooses to deploy our entire platform or only a portion will also affect our operating results.

COVID-19 makes forecasting challenging. Although as of the date of this report we have not experienced significant impact to our business, we anticipate it may impact our M700 endpoint product ramp as inlay partners prioritize producing existing products over a new-product ramp. Until we know more, we are unable to predict the full effects of COVID-19 on customer demand and the extent of which our operating results may be materially adversely affected.

Our systems business relies disproportionally on large-scale deployments at discrete end users. The timing of those large deployments causes large variability in our systems revenue. For example, we generated 14% of 2019 total revenue from a North American Systems customer in connection with a project-based deployment of gateways, which we expect to complete in the first quarter of 2020. If we are unable to replace project-based revenue from these discrete projects with new revenue streams, or if end users with sizable projects change or delay them without giving us adequate notice, we may experience significant fluctuation in revenue on a quarterly or annual basis, and we anticipate that uncertainty to continue to characterize our business for the foreseeable future.

Average Selling Price

Our product ASPs fluctuate based on competitive pressures and the discounting we offer to win opportunities, but generally decline over time. We expect that trend to continue. Historically, we have been able to implement manufacturing and quality improvements that effectively reduce the per-unit cost of most of our hardware products, as well as introduce newer and lower-cost products, but the timing of these cost reductions and product introductions fluctuates and may not materialize in any given quarter or year.

Seasonality

We typically renegotiate pricing with most of our endpoint IC customers with an effective date of the first quarter of the calendar year, reducing both revenue and gross margins in the first quarter when compared with prior periods. The impact tends to decline in subsequent quarters as we reduce costs and, to the extent we can migrate our customers to newer, lower-cost products, adjust product mix. Endpoint IC volumes also tend to be lower in the fourth quarter than the third quarter.

System sales tend to be stronger in the fourth quarter of the calendar year, and less strong in the first quarter. We believe this seasonality is due to the availability of residual funding for capital expenditures prior to the end of many customers’ fiscal years.

While we expect these seasonal trends to continue, quarter-to-quarter variability in our revenue can be caused by a number of factors (e.g., timing of large deployments, supply constraints, etc.) that can mask seasonality in any given year. These risks and uncertainties, as well as other risks and uncertainties that could cause our actual results to differ significantly from management’s expectations, are described in greater detail in Item 1A of Part II, “Risk Factors.”

Inventory Supply

From time to time we experience inventory overages or shortages, either due to us mis-estimating customer or end-user demand, constrained supplier manufacturing capacity or product availability, fluctuations in our market or the global economy, changes in regulations or tariffs or for a host of other reasons. These inventory dynamics can impact some or all of our hardware products. High inventory levels can result in product obsolescence, increases in reserves or unexpected expenses that adversely affect our business. Low inventory levels can affect our ability to meet customer demand, lengthen lead times and potentially causing us to miss opportunities, lose market share and/or damage customer relationships, also adversely affecting our business. For example, in 2010 we experienced wafer shortages from TSMC relative to our submitted endpoint IC wafer purchase orders because of high worldwide demand for semiconductor foundry capacity. These shortages adversely affected our ability to meet our customers’ demand and, in some cases, caused customers to cancel orders, qualify alternative suppliers or purchase from our competitors. Semiconductor industry analysts predict high wafer demand again in 2020.

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As of the date of this report, we have not experienced significant impact to our inventory supply related to COVID-19.We are monitoring the spread of the disease and the severity and duration of the outbreak; until we know more, we are unable to predict the full effects of COVID-19 on our ability to satisfy demand for our products in a cost-effective manner.

Results of Operations

	Year Ended December 31,									2019 vs 2018			2018 vs 2017
(in thousands, except percentages)	2019			2018			2017			Change			Change
Revenue	$	152,836		$	122,633		$	125,300		$	30,203		$	(2,667	)
Gross profit	$	74,002		$	58,281		$	64,941		$	15,721		$	(6,660	)
Gross margin		48.4	%		47.5	%		51.8	%		0.9	%		(4.3	)%
Loss from operations	$	(21,661	)	$	(34,869	)	$	(17,019	)	$	13,208		$	(17,850	)

Year ended December 31, 2019 compared with year ended December 31, 2018

Revenue and gross profit increased from increased endpoint IC and systems revenue. The increase in endpoint IC revenue was primarily due to increased shipment volume. The increase in systems revenue was primarily due to the large-scale North American systems deployment. Gross margin increased primarily due to product mix with higher margin systems revenue representing a larger portion of our total revenue, and also from leverage derived from comparable overhead costs on increased revenue, partially offset by higher excess and obsolescence charges. Loss from operations decreased due to increased gross profit, partially offset by increased operating expenses. A net increase in operating expenses was due to increased stock-based compensation expense and higher product development costs, partially offset by decreased restructuring costs and decreased personnel expenses.

Year ended December 31, 2018 compared with year ended December 31, 2017

Revenue and gross profit decreased primarily due to decreased endpoint IC revenue from lower ASPs, partially offset by increased systems sales. Gross margin decreased primarily due to lower ASPs on endpoint ICs, higher overhead costs and excess and obsolescence charges recorded in 2018. Loss from operations increased due to increased operating expenses and decreased gross profit. A net increase in operating expenses was due to increased stock-based compensation expense, restructuring costs and costs attributable to an independent investigation by the audit committee of our board of directors in connection with a complaint filed by a former employee. The outcome of the independent investigation was the audit committee of our board of directors concluding no credible evidence supported the former employee’s claims.

Revenue

	Year Ended December 31,						2019 vs 2018		2018 vs 2017
(in thousands)	2019		2018		2017		Change		Change
Endpoint ICs	$	97,657	$	84,974	$	91,699	$	12,683	$	(6,725	)
Systems		55,179		37,659		33,601		17,520		4,058
Total revenue	$	152,836	$	122,633	$	125,300	$	30,203	$	(2,667	)

We currently derive substantially all our revenue from sales of our endpoint ICs, reader ICs, reader modules, readers and gateways. We sell our endpoint ICs primarily to inlay manufacturers; our reader ICs and modules primarily to OEMs and ODMs through distributors; and our readers and gateways to VARs, and SIs, primarily through distributors. We are beginning to sell software through these same VAR and SI partners. We expect endpoint IC sales to represent a majority of our revenue for the foreseeable future.

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Year ended December 31, 2019 compared with year ended December 31, 2018

Endpoint IC revenue increased $12.7 million. Increased shipment volumes accounted for a $19.5 million increase, partially offset by a $3.6 million decrease due to declining ASPs and $3.2 million from the one-time product exchange we completed in the first quarter 2018 as described below. The ASP decrease was primarily due to our annual price negotiation as discussed above under “—Factors Affecting Our Performance—Seasonality” and, to a lesser extent, product mix. Systems revenue increased $17.5 million, primarily due to $16.5 million and $3.2 million increases in gateway and reader revenue, respectively. These gateway and reader revenue increases were primarily due to increased shipment volumes, with gateway revenue favorably impacted by the large-scale North American systems deployment described above. The systems revenue increases were offset by a $2.1 million decrease in reader IC and reader module revenue due to both lower shipment volumes and ASPs.

Year ended December 31, 2018 compared with year ended December 31, 2017

Endpoint IC revenue decreased $6.7 million on similar volumes, primarily due to a $9.1 million decrease due to declining ASPs. The ASP decrease was primarily associated with our annual price negotiation as discussed above under “—Factors Affecting Our Performance—Seasonality”. Partially offsetting the decrease was revenue recognized related to a product exchange we completed in the first quarter of 2018. In 2017, endpoint IC revenue was impacted by a sales returns reserve of $3.2 million related to the product exchange; we recognized $3.2 million revenue upon completing the product exchange in the first quarter of 2018. Systems revenue increased $4.1 million primarily due to increases of $5.7 million in reader IC and reader module revenue from higher shipment volumes and ASPs and $3.5 million in gateway revenue from the large-scale North American systems deployment described above. These increases in systems revenue were partially offset by a $4.5 million decrease in reader revenue from lower shipment volumes.

Gross Profit and Gross Margin

	Year Ended December 31,									2019 vs 2018			2018 vs 2017
(in thousands, except percentages)	2019			2018			2017			Change			Change
Cost of revenue	$	78,834		$	64,352		$	60,359		$	14,482		$	3,993
Gross profit	$	74,002		$	58,281		$	64,941		$	15,721		$	(6,660	)
Gross margin		48.4	%		47.5	%		51.8	%		0.9	%		(4.3	)%

Cost of revenue includes costs associated with manufacturing our endpoint ICs, reader ICs, reader modules, readers and gateways, including direct materials and outsourced manufacturing costs as well as associated overhead costs such as logistics, quality control, planning and procurement. Cost of revenue also includes charges for excess and obsolescence and warranty costs. Our gross margin varies from period to period based on mix of endpoint IC and systems revenue, underlying product margins driven by changes in ASPs or costs, as well as from charges for excess and obsolescence.

Year ended December 31, 2019 compared with year ended December 31, 2018

Cost of revenue increased $14.5 million primarily due to increased shipment volume of both endpoint ICs and systems and to a lesser extent higher excess and obsolescence charges. Gross margin increased 0.9% primarily due to product mix with higher margin systems revenue representing a larger portion of our total revenue, as well as from leverage derived from comparable overhead costs on increased revenue, partially offset by higher excess and obsolescence charges. Inventory excess and obsolescence charges had an unfavorable net gross-margin impact of 1.7% in 2019.

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Year ended December 31, 2018 compared with year ended December 31, 2017

Cost of revenue increased $4.0 million primarily due to higher overhead costs and excess and obsolescence charges. Gross margin decreased 4.3% primarily due to higher overhead costs and excess and obsolescence charges and the lower ASPs of our endpoint ICs as noted above. Inventory excess and obsolescence charges had an unfavorable net gross-margin impact of 1.2% in 2018. The gross margin decrease was partially offset by product mix with higher margin systems revenue representing a larger portion of our total revenue.

Operating Expenses

Research and Development

	Year Ended December 31,						2019 vs 2018		2018 vs 2017
(in thousands)	2019		2018		2017		Change		Change
Research and development	$	38,880	$	34,168	$	32,220	$	4,712	$	1,948

Research and development expense consists primarily of personnel expenses (salaries, benefits and other employee related costs) and stock-based compensation expense for our product-development personnel; external consulting and service costs; prototype materials; other new product development costs; and an allocated portion of infrastructure costs, which include occupancy, depreciation and software costs. We expect research and development expense to increase in absolute dollars in future periods as we focus on new product development and introductions.

Year ended December 31, 2019 compared with year ended December 31, 2018

Research and development expense increased $4.7 million, comprised primarily of increases of $2.8 million in stock-based compensation expense from PSUs and an increased number of stock options and RSUs, $778,000 in product development costs as a result of fluctuations in the timing of development activities, $554,000 in personnel expenses from a change in headcount mix and $463,000 in infrastructure costs from higher depreciation expense.

Year ended December 31, 2018 compared with year ended December 31, 2017

Research and development expense increased $1.9 million, comprised primarily of increases of $1.2 million in stock-based compensation expense from an increased number of stock options and $1.1 million in personnel expenses from a change in headcount mix, and, to a lesser extent, bonus expense we accrued in 2018 compared to non-achievement in 2017.

Sales and Marketing

	Year Ended December 31,						2019 vs 2018			2018 vs 2017
(in thousands)	2019		2018		2017		Change			Change
Sales and marketing	$	32,642	$	32,934	$	31,579	$	(292	)	$	1,355

Sales and marketing expense consists primarily of personnel expenses (salaries, incentive sales compensation, or commission, benefits and other employee related costs) and stock-based compensation expense for our sales and marketing personnel; travel, advertising and promotional expenses; and an allocated portion of infrastructure costs, which include occupancy, depreciation and software costs. We expect sales and marketing expense to remain approximately constant on an absolute dollar basis. We expect incentive sales compensation to fluctuate as a function of revenue.

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Year ended December 31, 2019 compared with year ended December 31, 2018

Sales and marketing expense in 2019 remained comparable to 2018; we had decreases of $1.3 million in personnel expense due to lower headcount and bonus expense partially offset by higher commission expense, $354,000 in infrastructure costs and $312,000 in travel related expense. These decreases were offset by a $1.8 million increase in stock-based compensation expense from PSUs and an increased number of stock options and RSUs.

Year ended December 31, 2018 compared with year ended December 31, 2017

Sales and marketing expense increased $1.4 million, comprised primarily of increases of $1.1 million in personnel expenses from higher commissions and bonus expense we accrued in 2018 compared to non-achievement in 2017 and $1.1 million in stock-based compensation expense from an increased number of stock options, partially offset by a decrease of $566,000 in marketing and advertising costs.

General and Administrative

	Year Ended December 31,						2019 vs 2018		2018 vs 2017
(in thousands)	2019		2018		2017		Change		Change
General and administrative	$	24,141	$	22,299	$	18,161	$	1,842	$	4,138

General and administrative expense consists primarily of personnel expenses (salaries, benefits, and other employee related costs) and stock-based compensation expense for our executive, finance, human resources and information technology personnel; legal, accounting and other professional service fees; travel and insurance expense; and an allocated portion of infrastructure costs which include, occupancy, depreciation and software costs. We expect general and administrative expense to increase due to higher accounting and compliance costs as a result of being a public company and professional service fees related to our ongoing litigation.

Year ended December 31, 2019 compared with year ended December 31, 2018

General and administrative expense increased $1.8 million, comprised primarily of an increase of $2.3 million in stock-based compensation from PSUs and an increased number of stock options and RSUs, partially offset by a $455,000 decrease in personnel expenses from lower bonus expense. Our professional service fees in 2019 remained comparable to 2018 with higher legal fees related to IP- and class-action litigation offset by no third-party investigation costs in 2019 in connection with the complaint filed by a former employee described below.

Year ended December 31, 2018 compared with year ended December 31, 2017

General and administrative expense increased $4.1 million, comprised primarily of increases of $1.5 million in personnel expenses from a change in headcount mix and bonus expense we accrued in 2018 compared to non-achievement in 2017, $1.4 million in stock-based compensation expense from an increased number of stock options and $1.4 million in third-party investigation costs incurred in 2018 in connection with a complaint filed by a former employee. The outcome of the independent investigation was the audit committee of our board of directors concluding no credible evidence supported the former employee’s claims.

Restructuring costs

	Year Ended December 31,						2019 vs 2018			2018 vs 2017
(in thousands)	2019		2018		2017		Change			Change
Restructuring costs	$	—	$	3,749	$	—	$	(3,749	)	$	3,749

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On February 13, 2018, we initiated a restructuring plan to align our strategic and financial objectives and optimize our resources for long-term growth, including a reduction-in-force affecting approximately 9% of our employees, subleasing unused office space and closing some remote offices. The restructuring was substantially complete as of June 30, 2018. As a result of the restructuring, we recorded a restructuring charge of $3.7 million for the year ended December 31, 2019.

Other Income, Net

	Year Ended December 31,						2019 vs 2018		2018 vs 2017
(in thousands)	2019		2018		2017		Change		Change
Other income, net	$	1,242	$	808	$	508	$	434	$	300

Other income, net consists of interest and accretion income earned on our cash, cash equivalents and short-term investments and remeasurement gains and losses on foreign currency.

Year ended December 31, 2019 compared with year ended December 31, 2018

Other income, net increased $434,000 primarily due to increased interest income from higher average short-term-investments in 2019 compared to 2018.

Year ended December 31, 2018 compared with year ended December 31, 2017

Other income, net increased $300,000 primarily due to increased accretion income from our short-investments in 2018 compared to 2017.

Interest Expense

	Year Ended December 31,						2019 vs 2018		2018 vs 2017
(in thousands)	2019		2018		2017		Change		Change
Interest expense	$	1,794	$	1,403	$	908	$	391	$	495

Interest expense consists primarily of cash interest, amortization of debt issuance costs and, to a lesser extent, amortization of debt discount on our long-term debt.

Year ended December 31, 2019 compared with year ended December 31, 2018

Interest expense increased $391,000 primarily due to higher average outstanding borrowings under our senior credit facility in 2019 compared to 2018.

Year ended December 31, 2018 compared with year ended December 31, 2017

Interest expense increased $495,000 primarily due to higher average outstanding borrowings under our senior credit facility in 2018 compared to 2017.

Loss on Debt Extinguishment

	Year Ended December 31,							2019 vs 2018			2018 vs 2017
(in thousands)	2019			2018		2017		Change			Change
Loss on debt extinguishment	$	(576	)	$	—	$	—	$	(576	)	$	—

In December 2019, we used $24.0 million of the net proceeds from the 2019 Notes to repay our senior credit facility in full, which was terminated pursuant to its terms. In connection with this repayment, we recorded a $576,000 loss on debt extinguishment, comprising a $470,000 prepayment penalty fees and a $106,000 write-off of unamortized debt issuance costs.

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Income Tax Benefit (Expense)

	Year Ended December 31,							2019 vs 2018			2018 vs 2017
(in thousands)	2019			2018		2017		Change			Change
Income tax benefit (expense)	$	(198	)	$	233	$	97	$	(431	)	$	136

We are subject to federal and state income taxes in the United States and foreign jurisdictions. Income tax benefit for both 2018 and 2017 was primarily due to the enactment-date effects of the Tax Cuts and Jobs Act of 2017 that included adjusting deferred tax assets and liabilities.

Non-GAAP Financial Measures

Our key non-GAAP performance measures include adjusted EBITDA and non-GAAP net income (loss), as defined below. We use adjusted EBITDA and non-GAAP net income (loss) as key measures to understand and evaluate our core operating performance and trends, to prepare and approve our annual budget and to develop short- and long-term operating plans. We believe excluding those items provides useful information for period-to-period comparisons of our business to allow investors and others to understand and evaluate our operating results in the same manner as it does for our management and board of directors. Our presentation of these non-GAAP financial measures is not meant to be considered in isolation or as a substitute for our financial results prepared in accordance with GAAP, and our non-GAAP measures may be different from similarly termed non-GAAP measures used by other companies.

Adjusted EBITDA

We define adjusted EBITDA differently in this report than we have in the past, due to loss on debt extinguishment incurred in connection with the December 2019 repayment of our senior credit facility. We define adjusted EBITDA as net income (loss) determined in accordance with GAAP, excluding, if applicable for the periods presented, the effects of stock-based compensation; depreciation; investigation costs; restructuring costs; other income, net; interest expense; loss on debt extinguishment and income tax benefit (expense). We have excluded loss on debt extinguishment because we do not believe it reflects our core operations. The exclusion of loss on debt extinguishment does not impact adjusted EBITDA previously reported for prior periods.

The following table presents a reconciliation of net loss to adjusted EBITDA:

	Year Ended December 31,									2019 vs 2018			2018 vs 2017
(in thousands)	2019			2018			2017			Change			Change
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)	$	12,244		$	(17,909	)
Adjustments:
Other income, net		(1,242	)		(808	)		(508	)		(434	)		(300	)
Interest expense		1,794			1,403			908			391			495
Loss on debt extinguishment		576			—			—			576			—
Income tax expense (benefit)		198			(233	)		(97	)		431			(136	)
Depreciation		4,809			4,534			3,950			275			584
Stock-based compensation		18,486			11,317			7,428			7,169			3,889
Restructuring costs		—			3,749			—			(3,749	)		3,749
Investigation costs		—			1,449			—			(1,449	)		1,449
Adjusted EBITDA	$	1,634		$	(13,820	)	$	(5,641	)	$	15,454		$	(8,179	)

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Non-GAAP Net Income (Loss)

We define non-GAAP net income (loss) differently in this report than we have in the past due to the prepayment penalty on debt extinguishment incurred in connection with the December 2019 repayment of our senior credit facility and amortization of debt discount related to the equity component of the 2019 Notes. Amortization of debt issuance costs and non-cash income tax benefit (expense) are no longer excluded from non-GAAP net income (loss). We define non-GAAP net income (loss) as net income (loss) determined in accordance with GAAP, excluding, if applicable for the periods presented, the effects of stock-based compensation; depreciation; investigation costs; restructuring costs; amortization of debt discount related to the equity component of our convertible notes; and prepayment penalty on debt extinguishment. We have revised the prior period non-GAAP net income (loss) to conform to our current period presentation.

Under GAAP, certain convertible debt instruments that may be settled in cash on conversion are required to be accounted for as separate liability and equity components in a manner that reflects our non-convertible debt borrowing rate. This results in the debt component being treated as though it was issued at a discount, with the debt discount being accreted as additional non-cash interest expense over the term of the notes using the effective interest method. As a result, we believe that excluding this non-cash interest expense attributable to the debt discount in calculating our non-GAAP net income (loss) is useful because this interest expense is not indicative of our ongoing operational performance.

We incurred a prepayment penalty on debt extinguishment in connection with the December 2019 repayment of our senior credit facility, which was included in loss on debt extinguishment in our consolidated statements of operations. Because of the non-recurring nature of the prepayment fees, we believe this expense is not representative of ongoing operation costs.

The following table presents a reconciliation of net loss to non-GAAP net income (loss):

	Year Ended December 31,									2019 vs 2018			2018 vs 2017
(in thousands)	2019			2018			2017			Change			Change
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)	$	12,244		$	(17,909	)
Adjustments:
Depreciation		4,809			4,534			3,950			275			584
Stock-based compensation		18,486			11,317			7,428			7,169			3,889
Restructuring costs		—			3,749			—			(3,749	)		3,749
Investigation costs		—			1,449			—			(1,449	)		1,449
Amortization of debt discount		140			—			—			140			—
Prepayment penalty on debt extinguishment		470			—			—			470			—
Non-GAAP net income (loss)	$	918		$	(14,182	)	$	(5,944	)	$	15,100		$	(8,238	)

Quarterly Results of Operations

The following tables set forth our unaudited quarterly statements of operations data for the last eight quarters. In the opinion of management, these datahave been prepared on the same basis as the audited consolidated financial statements included elsewhere in this report and reflect all adjustments, including normal recurring adjustments, necessary for a fair presentation of the data. The results of historical periods are not indicative of expectations for any future period. You should read these data together with our audited consolidated financial statements and the related notes included elsewhere in this report. 

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	Three Months Ended
	Dec. 31,			Sep. 30,			Jun. 30,			Mar. 31,			Dec. 31,			Sep. 30,			Jun. 30,			Mar. 31,
	2019			2019			2019			2019			2018			2018			2018			2018
	(in thousands, except percentages)
Statements of Operations Data:
Revenue	$	40,821		$	40,762		$	38,190		$	33,063		$	34,618		$	34,405		$	28,542		$	25,068
Cost of revenue		20,889			20,981			19,774			17,190			18,307			17,857			14,882			13,306
Gross profit		19,932			19,781			18,416			15,873			16,311			16,548			13,660			11,762
Gross margin		48.8	%		48.5	%		48.2	%		48.0	%		47.1	%		48.1	%		47.9	%		46.9	%
Operating expenses:
Research and development expense		11,202			10,344			8,773			8,561			8,998			8,804			8,363			8,003
Sales and marketing expense		8,063			7,842			8,188			8,549			8,188			7,864			8,023			8,859
General and administrative expense		7,488			5,503			5,455			5,695			5,318			6,695			5,061			5,225
Restructuring costs (benefits)		—			—			—			—			—			—			(178	)		3,927
Total operating expenses		26,753			23,689			22,416			22,805			22,504			23,363			21,269			26,014
Loss from operations		(6,821	)		(3,908	)		(4,000	)		(6,932	)		(6,193	)		(6,815	)		(7,609	)		(14,252	)
Other income (expense), net		295			317			309			321			247			204			267			90
Interest expense		(531	)		(413	)		(421	)		(429	)		(433	)		(390	)		(351	)		(229	)
Loss on debt extinguishment		(576	)		—			—			—			—			—			—			—
Loss before income taxes		(7,633	)		(4,004	)		(4,112	)		(7,040	)		(6,379	)		(7,001	)		(7,693	)		(14,391	)
Income tax benefit (expense)		(47	)		(77	)		(46	)		(28	)		392			(69	)		(39	)		(51	)
Net loss		(7,680	)	$	(4,081	)	$	(4,158	)	$	(7,068	)	$	(5,987	)	$	(7,070	)	$	(7,732	)	$	(14,442	)
Net loss per share — basic and diluted	$	(0.35	)	$	(0.19	)	$	(0.19	)	$	(0.33	)	$	(0.28	)	$	(0.33	)	$	(0.36	)	$	(0.68	)
Weighted-average shares:
Basic		22,173			21,961			21,709			21,544			21,477			21,403			21,333			21,125
Diluted		22,173			21,961			21,709			21,544			21,477			21,403			21,333			21,125

Liquidity and Capital Resources

As of December 31, 2019, we had cash, cash equivalents and short-term investments of $116.5 million comprising cash deposits held at major financial institutions and short-term investments in a variety of securities, including U.S. government agencies, corporate bonds and notes and money market funds. As of December 31, 2019, we had working capital of $157.3 million.

Historically, we have funded our operations primarily through cash generated from operations, the issuance of equity securities and the 2019 Notes or the borrowing of debt under our senior credit facility. In 2019, 2018 and 2017, our principal uses of cash were funding operations, debt service payments, and capital expenditures. We believe, based on our current operating plan, that our existing cash, cash equivalents and short-term investments will be sufficient to meet our anticipated cash needs for at least the next 12 months.

Sources of Funds

From time to time, we may explore additional financing sources and means to lower our cost of capital, which could include equity, equity-linked and debt financing. In addition, in connection with any future acquisitions, we may pursue additional funding which may be in the form of additional debt, equity or equity-linked financing or a combination thereof. We can provide no assurance that any additional financing will be available to us on acceptable terms.

2019 Notes

In December 2019, we issued the 2019 Notes in an aggregate principal amount of $86.3 million. The 2019 Notes are our senior unsecured obligations. The 2019 Notes bear interest at a fixed rate of 2.00% per year, payable semi-annually in arrears on June 15 and December 15 of each year, beginning on June 15, 2020. The 2019 Notes will be convertible into cash, shares of our common stock or a combination thereof, at our election. The 2019 Notes will mature on December 15, 2026, unless earlier repurchased, redeemed, or converted in accordance with the terms of the indenture for the 2019 Notes.

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The net proceeds from issuing the 2019 Notes were approximately $83.5 million after deducting fees and expenses. We used the net proceeds from issuing the 2019 Notes to pay the cost of the capped call transactions and repay our senior credit facility. We intend to use the remainder of the net proceeds for general corporate purposes.

For information on our debt facilities, please refer to Note 7 to our consolidated financial statements included elsewhere in this report.

Use of Funds

Our principal uses of cash are our operating expenses, inventory purchases, interest repayment and other working capital requirements.

Historical Cash Flow Trends

The following table shows a summary of our cash flows for the periods indicated:

	Year Ended December 31,
(in thousands)	2019			2018			2017
Net cash provided by (used in) operating activities	$	4,708		$	(11,777	)	$	(35,886	)
Net cash provided by (used in) investing activities		(13,099	)		(5,666	)		21,398
Net cash provided by financing activities		57,759			15,688			137

Operating Cash Flows

For the year ended December 31, 2019, net cash provided by operating activities was $4.7 million. The cash proceeds comprised a working capital contribution of $4.1 million and a net loss adjusted for non-cash items of $584,000. The working capital contribution was primarily due to lower cash usage in inventory purchases, partially offset by lower cash collections in accounts receivable due to the timing of when amounts came due.

For the year ended December 31, 2018, net cash used in operating activities was $11.8 million. The cash usage comprised a net loss adjusted for non-cash items of $20.6 million, offset by a working capital contribution of $8.8 million. The working capital contribution was primarily due to higher cash collection in accounts receivable due to the timing of when amounts came due and lower cash usage in inventory purchases.

For the year ended December 31, 2017, net cash used in operating activities was $35.9 million. The cash usage comprised a working capital usage of $30.1 million and a net loss adjusted for non-cash items of $5.8 million. The working capital usage was primarily due to higher cash usage in inventory purchases and lower cash collections in accounts receivable due to the timing of when amounts came due.

Investing Cash Flows

For the year ended December 31, 2019, net cash used in investing activities was $13.1 million. This cash usage comprised investments purchases of $72.4 million and equipment purchases of $2.4 million, partially offset by investment maturities of $61.7 million.

For the year ended December 31, 2018, net cash used in investing activities was $5.7 million. This cash usage comprised investments purchases of $51.7 million and equipment purchases of $6.4 million, partially offset by investment maturities of $52.4 million.

For the year ended December 31, 2017, net cash provided by investing activities was $21.4 million. The cash proceeds comprised investment maturities of $77.1 million, partially offset by investments purchases of $49.1 million and equipment purchases of $6.6 million.

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Financing Cash Flows

For the year ended December 31, 2019, net cash provided by financing activities was $57.8 million. The cash proceeds comprised primarily $83.5 million from issuance of the 2019 Notes, $9.1 million from exercised stock options and our employee stock purchase plan and $4.0 million in term loan borrowings, net of debt issuance costs. These proceeds were partially offset by repayments of indebtedness of $28.2 million of principal under our senior credit facility and a $10.1 million of premium we paid for the capped call transactions.

For the year ended December 31, 2018, net cash provided by financing activities was $15.7 million. The cash proceeds comprised primarily of $16.4 million in term loan borrowings, net of debt issuance costs and $2.7 million from exercised stock options and our employee stock purchase plan. These proceeds were partially offset by repayments of indebtedness of $2.5 million of principal under our senior credit facility and payments of $0.9 million for capital-lease financing obligations.

For the year ended December 31, 2017, net cash provided by financing activities was $137,000. The cash proceeds comprised primarily of $4.7 million from exercised stock options and our employee stock purchase plan. These proceeds were partially offset by payments of $600,000 for offering costs, $1.1 million for capital lease financing obligations, and indebtedness repayments of $2.8 million of principal under our senior credit facility.

Contractual Obligations

The following table reflects a summary of our contractual obligations as of December 31, 2019:

	Payments Due By Period
	Total			Less Than 1 Year			1-3 Years			3-5 Years			More Than 5 Years
(in thousands)
Convertible senior notes (1)	$	98,325		$	1,725		$	3,450		$	3,450		$	89,700
Finance lease obligations		270			269			1			—			—
Operating lease obligations
Operating lease obligations		27,405			4,755			9,440			6,482			6,728
Sublease income		(4,367	)		(1,373	)		(2,871	)		(123	)		—
Net operating lease commitments		23,038			3,382			6,569			6,359			6,728
Purchase commitments (2)		18,937			18,620			317			—			—
Total	$	140,570		$	23,996		$	10,337		$	9,809		$	96,428

⁽¹⁾ Convertible senior notes include $12.1 million of interest payments.

⁽²⁾ Purchase commitments comprise primarily non-cancelable commitments to purchase $17.3 million of inventory as of December 31, 2019, as well as non-cancelable software license agreements with vendors.

Off-Balance Sheet Arrangements

Since inception, we have not had any relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which would have been established for the purpose of facilitating off-balance sheet arrangements or for another contractually narrow or limited purpose.

Critical Accounting Policies and Significant Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements which have been prepared in accordance with GAAP. The preparation of these consolidated financial statements requires us to make estimates and judgments that affect the reported amounts of assets and liabilities and related disclosure of contingent assets and liabilities, revenue and expenses at the date of the consolidated financial statements. Generally, we base our estimates on historical experience and on various other assumptions, in accordance with GAAP, that we believe to be reasonable under the circumstances. Actual results may differ from these estimates under other assumptions or conditions.

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Critical accounting policies and estimates are those that we consider the most important to the portrayal of our financial condition and results of operations because they require our most difficult, subjective or complex judgments, often as a result of the need to make estimates about the effect of matters that are inherently uncertain. Our critical accounting policies and estimates include those related to:

• revenue recognition;

• inventory;

• income taxes; and

• stock-based compensation.

Revenue Recognition

We generate revenue primarily from sales of hardware products. We also generate revenue from software, extended warranties, enhanced maintenance, support services, and nonrecurring engineering development services, all of which are not material.

We recognize revenue when control of the promised goods or services is transferred to our customers, which for hardware sales is generally at the time of product shipment as determined by the agreed-upon shipping terms. We measure revenue based on the amount of consideration we expect to be entitled-to in exchange for those goods or services. The period between when we transfer control of promised goods or services and when we receive payment is expected to be one year or less, and that expectation is consistent with our historical experience. As such, we do not adjust our revenues for the effects of a significant financing component. We recognize any variable consideration, which primarily comprises sales incentives, is recognized as a reduction of revenue at the time of revenue recognition. We estimate sales incentives based on our historical experience and current expectations at the time of revenue recognition and update them at the end of each reporting period as additional information becomes available.

Our reader and gateway products are highly dependent on, and interrelated with, embedded software and cannot function without this embedded software. In these cases, we account for the hardware and software license as a single performance obligation and recognize revenue at the point in time when control is transferred. Additionally, we sell standalone system software that configures, manages and controls readers and gateways and other software that performs other functions. This standalone software is not integrated directly in the functionality of the reader or gateway. Our software licenses, both for embedded and standalone software, provide the customer with a right to use the software as it exists when we make it available to the customer. Based on the software product, customers purchase either perpetual licenses or subscribe to licenses for a specified term, which differ mainly in the duration over which the customer benefits from the software. Consequently, we recognize revenue for standalone software at a point in time when the software is made available to the customer.

Our contracts with customers with multiple performance obligations generally include a combination of hardware products, standalone software, extended warranty and enhanced maintenance and support services. For these contracts, we account for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling-price basis. In instances where the standalone selling price is not directly observable, such as when we do not sell the product or service separately, we determine the standalone selling price using one, or a combination of, the adjusted market assessment or expected cost-plus margin. Amounts allocated to extended warranty and enhanced maintenance sold with our reader and gateway products are deferred and recognized on a straight-line basis over the term of the arrangement, which is typically from one to three years. Amounts allocated to support services sold with our reader and gateway products are deferred and recognized when control of the promised services is transferred to our customers.

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For nonrecurring engineering development agreements that involve significant production, modification or customization of our products, we generally recognize revenue over the performance period using the cost-input method because it best depicts the transfer of services to the customer. We receive payments under these agreements based on a billing schedule. Contract assets relate to our conditional right to consideration for our completed performance under these agreements. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract liabilities, or deferred revenue relate to payments received in advance of performance under the contract. Contract liabilities are recognized as revenue as we perform under the contract. For the periods presented in this report, our contract assets, deferred revenue and the value of unsatisfied performance obligations for nonrecurring engineering development agreements are not material.

Payment terms typically range from 30 to 120 days. We present revenue net of sales tax in our consolidated statements of operations. Shipping charges billed to customers are included in revenue and the related shipping costs are included in cost of revenue.

Practical Expedients and Exemptions: We expense sales commissions when incurred because the amortization period would have been one year or less. We record these costs within sales and marketing expenses. We do not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less and (2) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed.

Inventory

Inventories are stated at the lower of cost or estimated net realizable value using the average costing method, which approximates the first-in, first-out method. Inventories comprise raw materials, work-in-process and finished goods. We continuously assess the value of our inventory and write down its value for estimated excess and obsolete inventory. This evaluation includes an analysis of inventory on hand, current and forecasted demand, product development plans, and market conditions. If future demand or market conditions are less favorable than our projections, or our product development plans change from current expectations, a write-down of excess or obsolete inventory may be required, and would be reflected in cost of goods sold in the period the updated information is known.

We recorded inventory excess and obsolescence charges, which had an unfavorable net impact of 1.7% and 1.2% on our gross margin for 2019 and 2018, respectively. Inventory excess and obsolescence charges were not material for the year ended December 31, 2017.

Income Taxes

We use the asset and liability approach for accounting, which requires recognizing deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement and tax bases. We measure deferred tax assets and liabilities using enacted tax rates expected to be in effect when such assets and liabilities are recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the year that includes the enactment date. We determine deferred tax assets, including historical net operating losses, and deferred tax liabilities, based on temporary differences between the book and tax bases of assets and liabilities. We believe that it is currently more likely than not that our deferred tax assets will not be realized and as such, we have recorded a full valuation allowance for these assets. We evaluate the likelihood of our ability to realize deferred tax assets in future periods on a quarterly basis, and when appropriate evidence indicates we would revise our valuation allowance accordingly.

We utilize a two-step approach for evaluating uncertain tax positions. First, we evaluate recognition, which requires us to determine if the weight of available evidence indicates that a tax position is more likely than not to be sustained upon audit, including resolution of related appeals or litigation processes. If a tax position is not considered more likely than not to be sustained, no benefits of the position are recognized. Second, we measure the uncertain tax position based on the largest amount of benefit which is more likely than not to be realized on effective settlement. This process involves estimating our actual current tax exposure, including assessing the risks associated with tax audits, together with assessing temporary differences resulting from the different treatment of items for tax and financial reporting purposes. If actual results differ from our estimates, our net operating loss and credit carryforwards could be materially impacted.

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Our realization of the benefits of the NOLs and credit carryforwards depends on sufficient taxable income in future years. We have established a valuation allowance against the carrying value of our deferred tax assets, as it is currently more likely than not that we will not be able to realize these deferred tax assets. In addition, using NOLs and credits to offset future income subject to taxes may be subject to substantial annual limitations due to the “change in ownership” provisions of the Code and similar state provisions. Events that cause limitations in the amount of NOLs that we may use in any one year include, but are not limited to, a cumulative ownership change of more than 50%, as defined by Code Sections 382 and 383, over a three-year period. Utilizing our NOLs and tax credit carryforwards could be significantly reduced if a cumulative ownership change of more than 50% has occurred in our past or occurs in our future.

We do not anticipate that the amount of our existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Due to the presence of NOLs in most jurisdictions, our tax years remain open for examination by taxing authorities back to 2000.

Stock-Based Compensation

We measure stock-based compensation costs for all share-based awards at fair value on the grant date and recognize compensation expense on a straight-line basis over the requisite service period, which typically vest over four years. We account for forfeitures as they occur. We determine the fair value of RSUs based on the closing price of our common stock at the date of grant. We determine the fair value of stock options at the date of grant by using the Black-Scholes option-pricing model. We also use the Black-Scholes option-pricing model to determine the fair value of each common share issued under the ESPP. We determine the fair value of the ESPP grants on the first day of each offering period.

In 2019, we began granting RSUs with performance conditions, or PSUs, replacing what has historically been our annual cash-bonus program for our senior executives and other bonus-eligible employees. The number of PSUs that ultimately vest will depend on the extent to which we achieve specified fiscal year financial performance metrics. We record compensation expense each period on a straight-line basis based on our estimate of the most probable number of PSUs that will vest and recognize that expense over the requisite service period.

Recent Accounting Pronouncements

For information on recent accounting pronouncements, please refer to Note 2 in our consolidated financial statements included elsewhere in this report.

JOBS Act

We are an emerging growth company under the JOBS Act. The JOBS Act provides that an emerging growth company can delay adoption of new or revised accounting pronouncements applicable to public companies until such pronouncements are made applicable to private companies, unless we otherwise irrevocably elect not to avail itself of this exemption. While we have not made such an irrevocable election, we have not delayed the adoption of any applicable accounting standards.

Subject to certain conditions set forth in the JOBS Act, if, as an “emerging growth company,” we choose to rely on certain exemptions provided for in the JOBS Act we may not be required to, among other things, (1) provide an auditor’s attestation report on our system of internal controls over financial reporting pursuant to Section 404, (2) provide all of the compensation disclosure that may be required of non-emerging growth public companies under the Dodd-Frank Wall Street Reform and Consumer Protection Act, (3) comply with any requirement that may be adopted by the PCAOB regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional information about the audit and the financial statements (auditor discussion and analysis) and (4) disclose certain executive compensation related items such as the correlation between executive compensation and performance, and comparisons of the CEO’s compensation to median employee compensation. These exemptions apply for a period of five years following the completion of our 2016 initial public offering or until we are no longer an “emerging growth company,” whichever is earlier.

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Item 7A. Quantitative and Qualitative Disclosures About Market Risk

We are exposed to market risks in the ordinary course of our business. Some of these risks are related to fluctuations in interest rates.

Interest Rate Risk

Under our current investment policy, we invest our excess cash in money market funds, U.S. government agency securities, corporate bonds and notes and commercial paper. Our current investment policy seeks first to preserve principal, second to provide liquidity for our operating and capital needs and third to maximize yield without putting our principal at risk. We do not enter into investments for trading or speculative purposes.

We had cash, cash equivalents and short-term investments of $116.5 million and $56.1 million as of December 31, 2019 and 2018, respectively. Our investments are exposed to market risk due to fluctuations in prevailing interest rates, which may reduce the yield on our investments or their fair value. Because our investment portfolio is short-term in nature, we do not believe an immediate 10% increase in interest rates would have a material effect on the fair market value of our portfolio, and therefore we do not expect our results of operations or cash flows to be materially affected by a sudden change in market interest rates.

Our convertible notes have fixed interest rates, thus a hypothetical 100 basis point increase in interest rates would not impact interest expense.

Inflation Risk

We do not believe that inflation has had a material effect on our business, financial condition or results of operations. If our costs were to become subject to significant inflationary pressures, we may not be able to fully offset such higher costs through price increases. Our inability or failure to do so could adversely affect our business, financial condition and results of operations.

Foreign Currency Exchange Risk

Our foreign subsidiaries are considered to be extensions of the U.S. Company. The functional currency of our foreign subsidiaries is the U.S. dollar. Accordingly, gains and losses resulting from remeasuring transactions denominated in currencies other than U.S. dollars are included in other income, net on the consolidated statements of operations. For any of the periods presented, we did not have material impact from exposure to foreign currency fluctuation. As we grow operations, our exposure to foreign currency risk will likely become more significant.

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Item 8. Financial Statements and Supplementary Data

	Page
Report of Independent Registered Public Accounting Firm	67
Consolidated Balance Sheets	68
Consolidated Statements of Operations	69
Consolidated Statements of Comprehensive Loss	70
Consolidated Statements of Changes in Stockholders’ Equity	71
Consolidated Statements of Cash Flows	72
Notes to Consolidated Financial Statements	73

The supplementary financial information required by this Item 8 is included in Item 7 under the caption “Quarterly Results of Operations.”

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Stockholders of Impinj, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Impinj, Inc. and its subsidiaries (the “Company”) as of December 31, 2019 and 2018, and the related consolidated statements of operations, of comprehensive loss, of changes in stockholders’ equity (deficit) and of cash flows for each of the three years in the period ended December 31, 2019, including the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2019 and 2018, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2019 in conformity with accounting principles generally accepted in the United States of America.

Change in Accounting Principle

As discussed in Note 2 to the consolidated financial statements, the Company changed the manner in which it accounts for leases in 2019.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

/s/ PricewaterhouseCoopers LLP

Seattle, Washington

March 2, 2020

We have served as the Company’s auditor since 2003.

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Impinj, Inc.

Consolidated Balance Sheets

(in thousands, except par value)

	December 31, 2019			December 31, 2018
Assets:
Current assets:
Cash and cash equivalents	$	66,898		$	17,530
Short-term investments		49,597			38,543
Accounts receivable, net of allowances of $1,281 and $551 at December 31, 2019 and 2018, respectively		23,735			18,462
Inventory		34,153			44,725
Prepaid expenses and other current assets		2,386			1,954
Total current assets		176,769			121,214
Property and equipment, net		17,442			19,778
Operating lease right-of-use assets		16,501			—
Other non-current assets		453			196
Goodwill		3,881			3,881
Total assets	$	215,046		$	145,069
Liabilities and stockholders' equity:
Current liabilities:
Accounts payable	$	5,600		$	4,643
Accrued compensation and employee related benefits		5,859			7,409
Accrued liabilities		3,755			2,887
Current portion of operating lease liabilities		3,380			—
Current portion of restructuring liabilities		94			582
Current portion of long-term debt		—			5,930
Current portion of finance lease liabilities		258			523
Current portion of deferred rent		—			402
Current portion of deferred revenue		551			649
Total current liabilities		19,497			23,025
Long-term debt, net of current portion		50,876			17,633
Operating lease liabilities, net of current portion		18,907			—
Finance lease liabilities, net of current portion		1			258
Long-term liabilities — other		313			304
Long-term restructuring liabilities		—			487
Deferred rent, net of current portion		—			5,294
Deferred revenue, net of current portion		213			185
Total liabilities		89,807			47,186
Commitments and contingencies (Note 11)
Stockholders' equity:
Preferred stock, $0.001 par value — 5,000 shares authorized, no shares issued and outstanding at December 31, 2019 and 2018		—			—
Common stock, $0.001 par value — 495,000 shares authorized, 22,217 and 21,492 shares issued and outstanding at December 31, 2019 and 2018, respectively		22			21
Additional paid-in capital		387,926			337,627
Accumulated other comprehensive income (loss)		34			(9	)
Accumulated deficit		(262,743	)		(239,756	)
Total stockholders' equity		125,239			97,883
Total liabilities and stockholders' equity	$	215,046		$	145,069

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

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Impinj, Inc.

Consolidated Statements of Operations

(in thousands, except per share data)

	Year Ended December 31,
	2019			2018			2017
Revenue	$	152,836		$	122,633		$	125,300
Cost of revenue		78,834			64,352			60,359
Gross profit		74,002			58,281			64,941
Operating expenses:
Research and development		38,880			34,168			32,220
Sales and marketing		32,642			32,934			31,579
General and administrative		24,141			22,299			18,161
Restructuring costs		—			3,749			—
Total operating expenses		95,663			93,150			81,960
Loss from operations		(21,661	)		(34,869	)		(17,019	)
Other income, net		1,242			808			508
Interest expense		(1,794	)		(1,403	)		(908	)
Loss on debt extinguishment		(576	)		—			—
Loss before income taxes		(22,789	)		(35,464	)		(17,419	)
Income tax benefit (expense)		(198	)		233			97
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)
Net loss per share — basic and diluted	$	(1.05	)	$	(1.65	)	$	(0.84	)
Weighted-average shares outstanding — basic and diluted		21,847			21,334			20,680

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

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Impinj, Inc.

Consolidated Statements of Comprehensive Loss

(in thousands)

	Year Ended December 31,
	2019			2018			2017
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on investments		43			27			(26	)
Total other comprehensive income (loss)		43			27			(26	)
Comprehensive loss	$	(22,944	)	$	(35,204	)	$	(17,348	)

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

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Impinj, Inc.

Consolidated Statements of Changes in Stockholders’ Equity

(in thousands)

											Accumulated
					Additional						Other			Total
	Common Stock				Paid-in			Accumulated			Comprehensive			Stockholders'
	Shares		Amount		Capital			Deficit			Income (loss)			Equity
Balance at December 31, 2016		20,336	$	20	$	311,216		$	(187,203	)	$	(10	)	$	124,023
Issuance of common stock		637		1		4,838			—			—			4,839
Stock-based compensation		—		—		7,428			—			—			7,428
Net loss		—		—		—			(17,322	)		—			(17,322	)
Other comprehensive loss		—		—		—			—			(26	)		(26	)
Balance at December 31, 2017		20,973		21		323,482			(204,525	)		(36	)		118,942
Issuance of common stock		519		—		2,828			—			—			2,828
Stock-based compensation		—		—		11,317			—			—			11,317
Net loss		—		—		—			(35,231	)		—			(35,231	)
Other comprehensive income		—		—		—			—			27			27
Balance at December 31, 2018		21,492		21		337,627			(239,756	)		(9	)		97,883
Issuance of common stock		725		1		9,196			—			—			9,197
Stock-based compensation		—		—		18,486			—			—			18,486
Net loss		—		—		—			(22,987	)		—			(22,987	)
Other comprehensive income		—		—		—			—			43			43
Equity component of issuance of 2019 Notes, net of issuance costs of $1,089 (Note 7)		—		—		32,743						—			32,743
Premiums paid for Capped Call Transactions (Note 7)		—		—		(10,126	)		—			—			(10,126	)
Balance at December 31, 2019		22,217	$	22	$	387,926		$	(262,743	)	$	34		$	125,239

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

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Impinj, Inc.

Consolidated Statements of Cash Flows

(in thousands)

	Year Ended December 31,
	2019			2018			2017
Operating activities:
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation		4,809			4,534			3,950
Stock-based compensation		18,486			11,317			7,428
Non-cash restructuring benefit		—			(454	)		—
Accretion of discount or amortization of premium on short-term investments		(506	)		(419	)		70
Amortization of debt issuance costs and debt discount		206			75			95
Loss on debt extinguishment		576			—			—
Deferred income taxes		—			(395	)		—
Changes in operating assets and liabilities:
Accounts receivable		(5,273	)		3,782			(4,822	)
Inventory		10,572			2,358			(19,349	)
Prepaid expenses and other assets		(524	)		473			439
Deferred revenue		(70	)		(381	)		(196	)
Deferred rent		—			(260	)		1,191
Accounts payable		1,046			326			(2,836	)
Accrued compensation and employee related benefits		(1,486	)		1,819			(1,735	)
Operating lease right-of-use assets		2,153			—			—
Operating lease liabilities		(3,038	)		—			—
Accrued liabilities and other liabilities		744			(390	)		(2,799	)
Restructuring liabilities		—			1,069			—
Net cash provided by (used in) operating activities		4,708			(11,777	)		(35,886	)
Investing activities:
Purchases of investments		(72,413	)		(51,651	)		(49,125	)
Proceeds from maturities of investments		61,743			52,352			77,075
Purchases of property and equipment		(2,429	)		(6,367	)		(6,552	)
Net cash provided by (used in) investing activities		(13,099	)		(5,666	)		21,398
Financing activities:
Proceeds from issuance of 2019 Notes, net of issuance costs		83,475			—			—
Premiums paid for Capped Call Transactions		(10,126	)		—			—
Principal payments on finance lease obligations		(522	)		(900	)		(1,147	)
Payments on term and equipment loans		(28,192	)		(2,451	)		(2,772	)
Proceeds from term loans, net of debt issuance costs		3,991			16,350			—
Proceeds from exercise of stock options and employee stock purchase plan		9,133			2,689			4,656
Payments of deferred offering costs		—			—			(600	)
Net cash provided by financing activities		57,759			15,688			137
Net increase (decrease) in cash and cash equivalents		49,368			(1,755	)		(14,351	)
Cash and cash equivalents
Beginning of period		17,530			19,285			33,636
End of period	$	66,898		$	17,530		$	19,285
Supplemental disclosure of cash flow information:
Cash paid for interest	$	1,612		$	1,179		$	814
Supplemental disclosure of non-cash financing and investing activities:
Purchases of property and equipment not yet paid		557			513			579
Disposal of fully depreciated property and equipment		1,432			3,105			592

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

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IMPINJ, INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

Note 1. Description of Business

Impinj, Inc., a Delaware corporation, is headquartered in Seattle, Washington. Impinj enables wireless connectivity for everyday items, delivering each item’s unique identity, location and authenticity to business and consumer applications. Impinj’s platform spans endpoints, connectivity and software and provides wireless item connectivity and information delivery. Impinj derives revenue from selling endpoint ICs, reader ICs, reader modules, readers, gateways and software as well as from development, service and license agreements. Our integrated platform connects billions of everyday items to applications, delivering real-time information to businesses about items they create, manage, transport and sell.

Note 2. Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements include Impinj, Inc. and its wholly owned subsidiaries. Intercompany balances and transactions have been eliminated in consolidation. These consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures as of the date of the financial statements, as well as the reported amounts of revenue and expenses during the periods presented. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, sales incentives, estimated costs to complete development contracts, deferred revenue, inventory excess and obsolescence, income taxes, the determination of the fair value of stock awards and compensation and employee related benefits. To the extent there are material differences between these estimates, judgments, or assumptions and actual results, our financial statements will be affected.

Concentrations of Credit Risk

Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of cash equivalents, investments and accounts receivable. We place cash and cash equivalents and investments with major financial institutions, which management assesses to be of high credit quality, to limit our investments exposure. We extend credit to customers based upon our evaluation of the customer’s financial condition and generally collateral is not required. The following table presents total revenue and accounts receivable concentration for the periods presented or as of the dates presented:

	Year Ended December 31,
	2019			2018			2017
Revenue:
Avery Dennison		19	%		22	%		18	%
North American Systems customer		14		*			*
Smartrac		12			17			14
Arizon	*				10			13
Blue Star	*			*				10
		45	%		49	%		55	%
* Less than 10%

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	As of December 31,
	2019			2018
Accounts Receivable:
Blue Star		18	%		13	%
Avery Dennison		15			14
Smartrac		13			21
Arizon	*				10
		46	%		58	%
* Less than 10%

Concentration of Supplier Risk

We outsource the manufacturing and production of our hardware products to a small number of suppliers. Although there are a limited number of manufacturers for hardware products, we believe that other suppliers could provide similar products on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect our operating results.

Cash and Cash Equivalents

Cash includes demand deposits with banks or financial institutions. Cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Our cash equivalents include only investments with an original or remaining maturity of three months or less at the date of purchase. We regularly maintain cash in excess of federally insured limits at financial institutions.

Investments

Our investments consist of fixed income securities, which include U.S. government agency securities, corporate notes and bonds and commercial paper. Because we use the investments to support current operations, the contractual maturities of our available-for-sale securities are due in one year or less and are classified as short-term investments. Available-for-sale securities are carried at fair value with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity, while realized gains and losses and other-than-temporary impairments are reported as a component of net income (loss) based on specific identification. An impairment charge is recorded in the consolidated statements of operations for declines in fair value below the cost of an individual investment that are deemed to be other than temporary. We assess whether a decline in value is temporary based on the length of time that the fair market value has been below cost, the severity of the decline and the intent and ability to hold or sell the investment. The gross unrealized gains or losses on short-term investments as of December 31, 2019 and 2018 were not material. We did not identify any investments as other-than-temporarily impaired as of December 31, 2019 or 2018.

Fair Value Measurement

Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The standards also establish a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value:

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

• Level 2 — Assets and liabilities valued based on observable market data for similar instruments, such as quoted prices for similar assets or liabilities.

• Level 3 — Unobservable inputs that are supported by little or no market activity; instruments valued based on the best available data, some of which is internally developed, and considers risk premiums that a market participant would require.

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We applied the following methods and assumptions in estimating our fair value measurements:

Cash equivalents — Cash equivalents comprise highly liquid investments, including money market funds and certificates of deposit, with an original or remaining maturity of three months or less at the date of purchase. The fair value measurement of these assets is based on quoted market prices in active markets.

Investments — Our investments comprise fixed income securities, which include U.S. government agency securities, corporate notes and bonds, commercial paper and treasury bills. The fair value measurement of these assets is based on observable market-based inputs or inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Long-term debt— The fair values of our senior credit facility included in long-term debt in our consolidated balance sheets approximated carrying value based on the borrowing rates currently available to us for loans with similar terms using Level 2 inputs as of December 31, 2018. See Note 7 for the carrying amount and estimated fair value of our convertible senior notes due in 2026.

Accounts Receivable and Allowances

Accounts receivable comprises amounts billed currently due from customers, net of an allowance for doubtful accounts, an allowance for sales returns and price exceptions.

The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in existing accounts receivable and is determined based on our historical collections experience, age of the receivable, knowledge of the customer and the condition of the general economy and industry as a whole. We record changes in our estimate to the allowance for doubtful accounts through bad debt expense and write off the receivable and corresponding allowance when accounts are ultimately determined to be uncollectible. Bad debt expense is included in general and administrative expenses. For the periods presented in this report, bad debt expense was not material.

The allowance for sales returns and price exceptions is our best estimate based on our historical experience and currently available evidence. We record changes in our estimate to the allowance for sales returns and price exceptions through revenue and relieve the allowance when product returns are received for sales returns and when claims are processed for price exceptions. In 2017, we reserved for $3.2 million related to a product exchange that we completed in the first quarter of 2018.The following table summarizes our allowance for sales returns (in thousands):

	Balance at Beginning of Year		Additional Reserve		Applied Sales Return and Price Exceptions			Balance at End of Year
Allowance for sales returns and price exceptions:
During year ended December 31, 2019	$	373	$	2,939	$	(2,240	)	$	1,072
During year ended December 31, 2018		3,495		1,426		(4,548	)		373
During year ended December 31, 2017		177		4,166		(848	)		3,495

Inventory

Inventories are stated at the lower of cost or estimated net realizable value using the average costing method, which approximates the first-in, first-out method. Inventories comprise raw materials, work-in-process and finished goods. We continuously assess the value of our inventory and write down its value for estimated excess and obsolete inventory. This evaluation includes an analysis of inventory on hand, current and forecasted demand, product development plans, and market conditions. If future demand or market conditions are less favorable than our projections, or our product development plans change from current expectations, a write-down of excess or obsolete inventory may be required, and would be reflected in cost of goods sold in the period the updated information is known.

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We recorded inventory excess and obsolescence charges, which had an unfavorable net impact of 1.7% and 1.2% on our gross margin for 2019 and 2018, respectively. Inventory excess and obsolescence charges were not material for the year ended December 31, 2017.

Property and Equipment

We record property and equipment at cost and depreciate it using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows:

Category	Useful Life
Laboratory equipment	3 to 10 years
Computer equipment and software	2 to 5 years
Furniture and fixtures	3 to 7 years
Equipment acquired under finance leases	3 to 7 years
Leasehold improvements	Shorter of remaining lease term or expected useful life

Maintenance and repair costs are charged to expense as incurred. Major improvements, which extend the useful life of the related asset, are capitalized. Upon disposal of a fixed asset, we record a gain or loss based on the differences between the proceeds received and the net book value of the disposed asset.

Goodwill

Goodwill is measured as the excess of the cost of acquisition over the sum of the amounts assigned to identifiable tangible and intangible assets acquired less liabilities assumed. We perform an annual impairment assessment of goodwill at the reporting unit level as of September 30, or more frequently if indicators of potential impairment exist. Our annual impairment assessment requires a comparison of the fair value of our reporting unit to the carrying value. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying value of a reporting unit is greater than its fair value, an impairment loss will be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. Additionally, we will consider the income tax effect from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss.

Revenue Recognition

We generate revenue primarily from sales of hardware products. We also generate revenue from software, extended warranties, enhanced maintenance, support services, and nonrecurring engineering development services, all of which are not material.

We recognize revenue when control of the promised goods or services is transferred to our customers, which for hardware sales is generally at the time of product shipment as determined by the agreed-upon shipping terms. We measure revenue based on the amount of consideration we expect to be entitled-to in exchange for those goods or services. The period between when we transfer control of promised goods or services and when we receive payment is expected to be one year or less, and that expectation is consistent with our historical experience. As such, we do not adjust our revenues for the effects of a significant financing component. We record any variable consideration, which primarily comprises sales incentives, as a reduction of revenue at the time of initial revenue recognition. We estimate sales incentives based on our historical experience and current expectations at the time of revenue recognition and update them at the end of each reporting period as additional information becomes available.

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Our reader and gateway products are highly dependent on, and interrelated with, embedded software and cannot function without this embedded software. In these cases, we account for the hardware and software license as a single performance obligation and recognize revenue at the point in time when control is transferred. Additionally, we sell standalone system software that configures, manages and controls readers and gateways and other software that performs other functions. This standalone software is not integrated directly in the functionality of the reader or gateway. Our software licenses, both for embedded and standalone software, provide the customer with a right to use the software as it exists when we make it available to the customer. Based on the software product, customers purchase either perpetual licenses or subscribe to licenses for a specified term, which differ mainly in the duration over which the customer benefits from the software. Consequently, we recognize revenue for standalone software at a point in time when the software is made available to the customer.

Our contracts with customers with multiple performance obligations generally include a combination of hardware products, standalone software, extended warranty and enhanced maintenance and support services. For these contracts, we account for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling-price basis. In instances where the standalone selling price is not directly observable, such as when we do not sell the product or service separately, we determine the standalone selling price using one, or a combination of, the adjusted market assessment or expected cost-plus margin. Amounts allocated to extended warranty and enhanced maintenance sold with our reader and gateway products are deferred and recognized on a straight-line basis over the term of the arrangement, which is typically from one to three years. Amounts allocated to support services sold with our reader and gateway products are deferred and recognized when control of the promised services is transferred to our customers.

For nonrecurring engineering development agreements that involve significant production, modification or customization of our products, we generally recognize revenue over the performance period using the cost-input method because it best depicts the transfer of services to the customer. We receive payments under these agreements based on a billing schedule. Contract assets relate to our conditional right to consideration for our completed performance under these agreements. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract liabilities, or deferred revenue, relate to payments received in advance of performance under the contract. Contract liabilities are recognized as revenue as we perform under the contract. For the periods presented in this report, our contract assets, deferred revenue and the value of unsatisfied performance obligations for nonrecurring engineering development agreements are not material.

Payment terms typically range from 30 to 120 days. We present revenue net of sales tax in our consolidated statements of operations. Shipping charges billed to customers are included in revenue and the related shipping costs are included in cost of revenue.

Practical Expedients and Exemptions: We expense sales commissions when incurred because the amortization period is expected to be one year or less. We record these costs within sales and marketing expenses. We do not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less and (2) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed. 

Product Warranties

We provide limited warranty coverage for most products, generally ranging from a period of 90 days to one year from the date of shipment. We record a liability for the estimated cost of product warranties based on historical claims, product failure rates and other factors when the related revenue is recognized. We review these estimates periodically and adjust the warranty reserves as actual experience differs from historical estimates or other information becomes available. The warranty liability primarily includes the anticipated cost of materials, labor and shipping necessary to repair or replace the product. Accrued warranty costs in 2019 and 2018 were not material.

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Leases

We determine whether an arrangement is or contains a lease at inception. Right-of-use, or ROU, assets represent our right to use an identified asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of future lease payments over the lease term. We use an incremental borrowing rate in determining the present value of future lease payments as our operating leases do not provide an implicit rate. Our incremental borrowing rate is based on a credit-adjusted risk-free rate, which best approximates a secured rate over a similar term of lease. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Our lease agreements may contain variable costs such as common area maintenance, insurance, real estate taxes or other costs. Variable lease costs are expensed as incurred on the consolidated statements of operations. Our lease agreements generally do not contain any residual value guarantees or restrictive covenants. Finance lease ROU assets are included in property and equipment, net in our consolidated balance sheets.

We have various non-cancellable operating lease agreements for office, warehouse and research and development space in the U.S., China, Thailand and Malaysia, with expiration dates from 2020 to 2026. Certain of these arrangements have free or escalating rent payment provisions and optional renewal and termination clauses that are factored into the classification and measurement of the lease when appropriate. These lease agreements typically include lease and non-lease components and are generally accounted for as a single lease component.

Leases with an initial term of 12 months or less are not recorded on our consolidated balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term.

Research and Development Costs

Research and development expense consists primarily of personnel expenses (salaries, benefits and other employee related costs) and stock-based compensation expense for our product-development personnel; external consulting and service costs; prototype materials; other new product development costs; and an allocated portion of infrastructure costs, which include occupancy, depreciation and software costs.

Foreign Currency

Our foreign subsidiaries are considered to be extensions of the U.S. Company. The functional currency of the foreign subsidiaries is the U.S. dollar. Accordingly, gains and losses resulting from remeasuring transactions denominated in currencies other than U.S. dollars are included in other income, net on the consolidated statements of operations.

Income Taxes

We use the asset and liability approach for accounting, which requires recognizing deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement and tax bases. We measure deferred tax assets and liabilities using enacted tax rates expected to be in effect when such assets and liabilities are recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the year that includes the enactment date. We determine deferred tax assets, including historical net operating losses, and deferred tax liabilities, based on temporary differences between the book and tax bases of assets and liabilities. We believe that it is currently more likely than not that our deferred tax assets will not be realized and as such, we have recorded a full valuation allowance for these assets. We evaluate the likelihood of our ability to realize deferred tax assets in future periods on a quarterly basis, and when appropriate evidence indicates we would revise our valuation allowance accordingly.

We utilize a two-step approach for evaluating uncertain tax positions. First, we evaluate recognition, which requires us to determine if the weight of available evidence indicates that a tax position is more likely than not to be sustained upon audit, including resolution of related appeals or litigation processes. If a tax position is not considered more likely than not to be sustained, no benefits of the position are recognized. Second, we measure the uncertain tax position based on the largest amount of benefit which is more likely than not to be realized on effective settlement. This process involves estimating our actual current tax exposure, including assessing the risks associated with tax audits, together with assessing temporary differences resulting from the different treatment of items for tax and financial reporting purposes. If actual results differ from our estimates, our net operating loss and credit carryforwards could be materially impacted.

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Our realization of the benefits of the NOLs and credit carryforwards depends on sufficient taxable income in future years. We have established a valuation allowance against the carrying value of our deferred tax assets, as it is currently more likely than not that we will not be able to realize these deferred tax assets. In addition, using NOLs and credits to offset future income subject to taxes may be subject to substantial annual limitations due to the “change in ownership” provisions of the Code and similar state provisions. Events that cause limitations in the amount of NOLs that we may use in any one year include, but are not limited to, a cumulative ownership change of more than 50%, as defined by Code Sections 382 and 383, over a three-year period. Utilizing our NOLs and tax credit carryforwards could be significantly reduced if a cumulative ownership change of more than 50% has occurred in our past or occurs in our future.

We do not anticipate that the amount of our existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Due to the presence of NOLs in most jurisdictions, our tax years remain open for examination by taxing authorities back to 2000.

Stock-Based Compensation

We have equity incentive plans that are more fully described in “Note 9 Stock-Based Awards”.

We measure stock-based compensation costs for all share-based awards at fair value on the grant date and recognize compensation expense on a straight-line basis over the requisite service period, which typically vest over four years. We account for forfeitures as they occur. We determine the fair value of RSUs based on the closing price of our common stock at the date of grant. We determine the fair value of stock options at the date of grant by using the Black-Scholes option-pricing model. We also use the Black-Scholes option-pricing model to determine the fair value of each common share issued under the ESPP. We determine the fair value of the ESPP grants on the first day of each offering period.

In 2019, we began granting RSUs with performance conditions, or PSUs, replacing what has historically been our annual cash-bonus program for our senior executives and other bonus-eligible employees. The number of PSUs that ultimately vest will depend on the extent to which we achieve specified fiscal year financial performance metrics. We record compensation expense each period on a straight-line basis based on our estimate of the most probable number of PSUs that will vest and recognize that expense over the requisite service period.

Net Loss per Share

Net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding. We have outstanding stock options, restricted stock units and ESPPs and unvested common stock subject to repurchase which we include in the calculation of diluted net loss per share if their effect would be dilutive. The diluted net loss per share is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period.

We use the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net loss per share, if applicable since we expect to settle the principal amount of the outstanding 2019 Notes in cash. For more information about the 2019 Notes, please refer to Note 7 to our consolidated financial statements.

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Recently Adopted Accounting Standards

In February 2016, the Financial Accounting Standards Board, or FASB, issued guidance on leases. This standard requires recognizing a right-of-use asset and lease liability on the balance sheet for all leases. It also requires more detailed disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. This standard is effective for interim and annual reporting periods beginning after December 15, 2018. We adopted this standard on January 1, 2019 using the effective-date modified retrospective transition method and elected the available practical expedients permitted under the transition method, allowing us to carryforward our historical assessments of (1) whether contracts are or contain leases, (2) lease classification, and (3) initial direct costs. Upon adopting this standard, we recorded net operating lease ROU assets and lease liabilities of $18.7 million and $25.3 million, respectively, as of January 1, 2019. Net restructuring liabilities of $1.0 million related to cease-use costs and net deferred rent of $5.6 million were netted against the operating lease ROU assets upon adoption of this guidance. Our accounting for finance leases remained substantially unchanged. Our consolidated financial statements for the year ended and as of December 31, 2019 are presented under the new standard, while comparative prior periods presented are not adjusted and continue to be reported in accordance with our historical accounting policy. The adoption of this guidance did not impact our results of operations.

In June 2018, the FASB issued guidance to improve nonemployee share-based payment accounting that requires companies to account for share-based payments granted to nonemployees similar to share-based payments granted to employees. This guidance is effective for fiscal years beginning after December 15, 2018, including the interim periods within those fiscal years. We adopted this standard on January 1, 2019 and the adoption of this guidance did not impact our financial positions, results of operations or cash flows.

In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This guidance is effective for fiscal years beginning after December 15, 2019, including the interim periods within those fiscal years. Early adoption of this guidance is permitted. We early adopted this guidance prospectively on January 1, 2019 and the adoption of this guidance did not impact our financial positions, results of operations or cash flows.

In December 2019, the FASB issued guidance to improve areas of GAAP by removing certain exceptions permitted by Topic 740 - Income Taxes and clarifying existing guidance to facilitate consistent application. Early adoption of the new standard is permitted. We early adopted this guidance prospectively on January 1, 2019. Since we have incurred net losses since our inception and maintained a full valuation allowance on our net deferred tax assets, the adoption did not have a material impact on our financial positions, results of operations and cash flows, or financial statement disclosures.

Recently Issued Accounting Standards Not Yet Adopted

In June 2016, the FASB issued guidance on measuring credit losses on financial instruments. This guidance requires measuring and recognizing expected credit losses for financial assets held at amortized cost. This guidance is effective for interim and annual reporting periods beginning after December 15, 2019, and early adoption is permitted. We will adopt this guidance on January 1, 2020. The adoption of this guidance requires a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. While we continue to assess all potential impacts of this new standard, we do not expect the adoption of this guidance to have a material impact on our financial position, results of operations or cash flows.

Other recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force), the American Institute of Certified Public Accountants, and the Securities and Exchange Commission did not have, or are not expected to have, a material impact on our present or future consolidated financial statements.

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Note3. Fair Value Measurements

The following table presents the balances of assets measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the dates presented (in thousands):

	December 31, 2019						December 31, 2018
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	45,663	$	—	$	45,663	$	11,896	$	—	$	11,896
Total cash equivalents		45,663		—		45,663		11,896		—		11,896
Short-term investments:
U.S. government agency securities		—		32,323		32,323		—		7,482		7,482
Corporate notes and bonds		—		13,305		13,305		—		3,736		3,736
Commercial paper		—		3,969		3,969		—		9,943		9,943
Treasury bills		—		—		—		—		17,382		17,382
Total short-term investments		—		49,597		49,597		—		38,543		38,543
Total	$	45,663	$	49,597	$	95,260	$	11,896	$	38,543	$	50,439

We did not have any Level 3 assets as of December 31, 2019 or 2018. There were no liabilities measured at fair value as of December 31, 2019 or 2018. See Note 7 for the carrying amount and estimated fair value of our convertible senior notes due in 2026.

Note 4. Inventory

The following table presents the detail of inventories as of the dates presented (in thousands):

	December 31, 2019		December 31, 2018
Raw materials	$	5,579	$	3,858
Work-in-process		7,485		13,671
Finished goods		21,089		27,196
Total inventory	$	34,153	$	44,725

Note 5. Property and Equipment

The following table presents the detail of property and equipment as of the dates presented (in thousands):

	December 31, 2019			December 31, 2018
Laboratory equipment	$	15,326		$	14,505
Computer equipment and software		4,927			4,626
Furniture and fixtures		1,138			1,138
Equipment acquired under finance leases		3,461			3,972
Leasehold improvements		10,554			10,551
Total property and equipment, gross		35,406			34,792
Less: Accumulated depreciation		(17,964	)		(15,014	)
Total property and equipment, net	$	17,442		$	19,778

Depreciation expense, which includes amortization of finance lease ROU assets, was $4.8 million, $4.5 million and $4.0 million for the years ended December 31, 2019, 2018 and 2017, respectively. The net book value of property and equipment acquired under finance leases was $0.7 million and $1.1 million at December 31, 2019 and 2018, respectively.

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Note 6. Income Taxes

We are subject to federal and state income taxes in the United States and foreign jurisdictions.

The following table presents U.S. and foreign components of income (loss) before incomes taxes:

	Year Ended December 31,
	2019			2018			2017
U.S.	$	(23,291	)	$	(35,933	)	$	(17,761	)
Foreign		502			469			342
Loss before income taxes	$	(22,789	)	$	(35,464	)	$	(17,419	)

The following table presents the detail of income tax benefit (expense) for the periods presented (in thousands):

		Year Ended December 31,
		2019			2018			2017
Current:
U.S. - Federal	$	—			$	—		$	—
U.S. - State			(36	)		(23	)		(8	)
Foreign			(150	)		(140	)		(126	)
			(186	)		(163	)		(134	)
Deferred:
U.S. - Federal			(11	)		404			241
U.S. - State			(1	)		(8	)		(10	)
Foreign			—			—			—
			(12	)		396			231
Total income tax benefit (expense)		$	(198	)	$	233		$	97

We have not recorded a liability for U.S. income taxes and foreign withholding taxes on the undistributed earnings of foreign subsidiaries as of December 31, 2019 as we intend to permanently reinvest future such earnings outside the United States. The amount of the unrecognized deferred tax liability, if incurred, is expected to be immaterial.

The following table presents a reconciliation of the federal statutory rate and our effective tax rate for the periods presented:

	Year Ended December 31,
	2019			2018			2017
U.S. Statutory Rate		21.0	%		21.0	%		34.0	%
Change in valuation allowance		(22.9	)		(20.6	)		56.4
State taxes (net of federal benefit)		(0.4	)		0.5			1.9
Federal research and development credit		5.9			4.1			7.1
Incentive stock options		(1.9	)		(2.9	)		12.5
Unrecognized tax benefits		(1.2	)		(1.0	)		(3.5	)
Impact of Tax Cuts and Jobs Act of 2017		—			—			(113.5	)
Return to provision - deductible transaction costs		—			—			5.6
Other, net		(1.4	)		(0.4	)		0.1
Effective income tax rate		(0.9	%)		0.7	%		0.6	%

We continue to maintain a full valuation allowance against our net deferred tax assets in the U.S. but recognize deferred income tax expense in the U.S. based solely on the amortization of goodwill. Our net deferred tax liability attributable to the amortization of goodwill for tax purposes decreased during the year due to the creation of indefinite net operating loss carryforwards in the current year, which can be partially realized as a result of the deferred tax liability associated with the tax amortization of goodwill.

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Deferred federal, state and foreign income taxes reflect the net tax impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and such amounts for tax purposes. The following table presents the significant components of our deferred tax assets and liabilities as of the dates presented (in thousands):

	December 31, 2019			December 31, 2018
Net operating loss carryforwards	$	38,391		$	34,279
Credit carryforwards		9,083			8,071
Capitalized research and development		2,235			2,969
Deferred rent		—			1,021
Operating lease liabilities		4,830			—
Allowances		1,694			1,309
Deferred compensation		176			230
Deferred revenue		46			40
Stock-based compensation		2,846			1,340
Other		156			108
Deferred tax assets		59,457			49,367
Less: Valuation allowance		(46,602	)		(48,481	)
Net deferred tax assets		12,855			886
Deferred tax liability:
Goodwill		(645	)		(590	)
Depreciation and amortization		(1,716	)		(433	)
Operating lease ROU assets		(3,576	)		—
2019 Notes		(7,066	)		—
Deferred tax liabilities		(13,003	)		(1,023	)
Net deferred tax liability	$	(148	)	$	(137	)

Realization of deferred tax assets is dependent upon the generation of future taxable income, if any, the timing and amount of which are uncertain. We have provided a full valuation allowance against the net deferred tax assets as of December 31, 2019 and 2018 because, based on the weight of available evidence, it is more likely than not that the deferred tax assets will not be realized.

We have accumulated federal tax losses of approximately $179.1 million and $159.5 million, respectively, as of December 31, 2019 and 2018, which are available to reduce future taxable income. The Tax Cuts and Jobs Act , or TCJA, enacted on December 22, 2017 altered the carryforward period for federal net operating losses and as a result, all net operating losses generated in 2018 and forward have an indefinite life. Of the net operating losses reported, we have accumulated $50.4 million with an indefinite life as of December 31, 2019. We have accumulated state tax losses of approximately $23.8 million and $23.8 million, respectively, as of December 31, 2019 and 2018. Additionally, we have net research and development credit carryforwards of $12.0 million and $10.6 million, respectively, as of December 31, 2019 and 2018, which are available to reduce future tax liabilities. The pre-2018 federal tax losses and research and development credit carryforwards begin expiring in 2020. Under Sections 382 and 383 of the Internal Revenue Code, if a corporation undergoes an ownership change, the corporation’s ability to use its pre-change net operating loss carryforwards and other pre-change tax attributes, such as research tax credits, to offset its post-change income or income tax liability may be limited.

We are currently not under audit in any tax jurisdiction. Tax years from 2000 through 2019 are currently open for audit by federal and state taxing authorities.

We establish reserves for tax positions based on estimates of whether, and the extent to which, additional taxes will be due. The reserves are established when we believe that positions might be challenged by taxing authorities despite our belief that our tax return positions are fully supportable.

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The following table presents the total balance of unrecognized tax benefits as of the dates presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Balance at beginning of period	$	3,159	$	2,906	$	2,597
Gross increase to tax positions in prior periods		—		—		2
Gross increase to tax positions in current periods		269		253		307
Balance at end of period	$	3,428	$	3,159	$	2,906

At December 31, 2019, the total amount of unrecognized tax benefits of $3.4 million is recorded as a reduction to the deferred tax asset. If recognized, it would have no impact to our effective tax rate as we have a full valuation allowance. We do not anticipate that the amount of existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Accrued interest and penalties related to unrecognized tax benefits are recorded as income tax expense and are zero.

Note 7. Long-term debt

Convertible Senior Notes

In December 2019, we issued convertible senior notes due 2026, or the 2019 Notes, in an aggregate principal amount of $86.3 million. The 2019 Notes are our senior unsecured obligations and are governed by the indenture for the 2019 Notes. The 2019 Notes bear interest at a fixed rate of 2.00% per year, payable semi-annually in arrears on June 15 and December 15 of each year, beginning on June 15, 2020. Upon conversion, the 2019 Notes will be convertible into cash, shares of our common stock or a combination thereof, at our election. The 2019 Notes will mature on December 15, 2026, unless earlier repurchased, redeemed, or converted in accordance with the terms of the indenture.

The net proceeds from issuing the 2019 Notes were approximately $83.5 million after deducting fees and expenses. We used the net proceeds from issuing the 2019 Notes to pay the cost of the capped call transactions and repay our senior credit facility, both of which are described further below.

The 2019 Notes are convertible at an initial conversion rate of 28.9415 shares of our common stock per $1,000 principal amount of the 2019 Notes, which is equal to an initial conversion price of approximately $34.55 per share of our common stock, subject to adjustment under certain circumstances in accordance with the indenture. Prior to the close of business on the business day immediately preceding September 15, 2026, holders of the 2019 Notes may convert all or a portion of their 2019 Notes under the following circumstances:

• during any fiscal quarter commencing after the fiscal quarter ending on March 31, 2020 (and only during such fiscal quarter), if the last reported sale price of our common stock, for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price on each applicable trading day; 

• during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2019 Notes for each trading day was less than 98% of the product of the last reported sale price of our common stock and the conversion rate on each such trading day;

• prior to the close of business on the second scheduled trading day immediately preceding the redemption date if we call the 2019 Notes for redemption; or

• upon the occurrence of specified corporate events, as described in the Indenture.

On or after September 15, 2026, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of the 2019 Notes, in multiples of $1,000 principal amount, at the option of the holder regardless of the foregoing circumstances.

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We may redeem the 2019 Notes for cash, at our option, on or after December 20, 2023, if the last reported sale price of our common stock has been at least 130% of the conversion price at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period at a redemption price equal to 100% of the principal amount of the 2019 Notes being redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date.

Holders of the 2019 Notes who convert their 2019 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the indenture) are, under certain circumstances, entitled to an increase in the conversion rate. Additionally in the event of a corporate event constituting a fundamental change (as defined in the indenture), holders of the 2019 Notes may require us to repurchase all or a portion of their 2019 Notes at a repurchase price equal to 100% of the principal amount of the 2019 Notes being repurchased, plus any accrued and unpaid interest to, but excluding, the repurchase date.

Certain convertible debt instruments that may be settled in cash on conversion are required to be separated into a liability and an equity component. The total proceeds are first allocated to the liability component based on the fair value of a similar debt instrument without the conversion option. The total proceeds that remain are allocated to the equity component and recognized in additional paid-in capital.

Accordingly, we separated the 2019 Notes into a liability and an equity component. We determined the fair value of the liability component to be $52.5 million calculated as the present value of future cash flows discounted at the borrowing rate for a similar nonconvertible debt instrument based on the expected term. The borrowing rate was determined to be 9.90% based on the market rates for nonconvertible debt instruments issued by other companies with publicly available credit ratings considered to be comparable to us. The excess of the principal amount of the 2019 Notes over the initial carrying amount of the liability component was recognized as a debt discount of $33.8 million and is being amortized to interest expense over the expected term of the 2019 Notes using the effective interest rate method. The equity component of $33.8 million, calculated as the difference between the total proceeds of $86.3 million and the initial carrying amount of the liability component, was recorded in additional paid-in capital. The equity component is not remeasured as long as it continues to meet the conditions for equity classification.

As of December 31, 2019, the 2019 Notes were not yet convertible and the “if-converted value” did not exceed the remaining principal amount of the 2019 Notes.

Total issuance costs of $2.8 million related to the 2019 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component of $1.7 million are being amortized to interest expense over the respective term of the 2019 Notes using the effective interest rate method. The issuance costs attributable to the equity component of $1.1 million were netted against the respective equity component in additional paid-in capital.

The effective interest rate on the liability component of the 2019 Notes for the year ended December 31, 2019 is 10.21%. Accrued interest related to the 2019 Notes as of December 31, 2019 was not material. Accrued interest is recorded in accrued liabilities in our consolidated balance sheet. Interest expense related to the 2019 Notes for the year ended December 31, 2019 was not material.

The estimated fair value of the 2019 Notes was $87.0 million as of December 31, 2019, which was determined through consideration of quoted market prices. The fair value is classified as Level 2, as defined in Note 2.

The following table presents the outstanding principal amount and carrying value of the 2019 Notes as of the date presented (in thousands):

	December 31, 2019
Outstanding principal amount		86,250
Unamortized debt discount and debt issuance costs		(35,374	)
Carrying value		50,876

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In connection with the issuance of the 2019 Notes, we entered into privately negotiated capped call transactions with certain financial counterparties. The capped call transactions are generally designed to reduce potential dilution to our common stock upon any conversion or settlement of the 2019 Notes or offset any cash payments we are required to make in excess of the principal amount uponconversion of the 2019 Notes, as the case may be, with such reduction or offset subject to a cap based on the cap price. If, however, the market price per share of our common stock exceeds the cap price of the capped call transactions, there would be dilution and/or there would not be an offset of such potential cash payments, in each case, to the extent that the then-market price per share of our common stock exceeds the cap price. The cap price of the capped call transactions is initially $54.20 per share, which represents a premium of 100% over the last reported sale price of our common stock of $27.10 per share on December 11, 2019, and is subject to certain adjustments under the terms of the capped call transactions. The capped call transactions expire over 40 consecutive scheduled trading days ending on December 11, 2026.

The capped call transactions meet the criteria for classification in equity, are not accounted for as derivatives, and are not remeasured each reporting period. We paid $10.1 million for the capped call transactions, which is included as a reduction to additional paid-in-capital within shareholders’ equity.

Senior Credit Facility

On April 26, 2019, we amended our senior credit facility to, among other things, extend the maturity date of the $25.0 million revolving credit facility, with a $5.0 million letter of credit sub-facility, to May 1, 2021 and refinance the existing term loan and equipment advance with a new $23.5 million term loan. The term loan will amortize over 36 months, beginning on May 1, 2020, following an initial 12-month interest-only period, and mature on April 1, 2023. We may prepay the term loan at any time, subject to a prepayment fee equal to 2.0% of the outstanding principal amount if prepaid on or before April 26, 2020, or 1.0% of the outstanding principal amount if prepaid after April 26, 2020, but on or before April 26, 2021. There were no changes to the term loan interest rates or financial covenants as a result of this amendment.

On December 16, 2019, we used $24.0 million of the net proceeds from the 2019 Notes to repay in full our senior credit facility, which was terminated pursuant to its terms. In connection with this repayment, we recorded $576,000 of loss on debt extinguishment, comprised of $470,000 prepayment penalty and $106,000 write-off of unamortized debt issuance costs. We also paid accrued interest on our senior credit facility, which was not material.

Note 8. Stockholders’ Equity

Preferred Stock

Our board of directors has the authority to fix the designations, powers, preferences and rights, and the qualifications, limitations or restrictions thereof, of any wholly unissued series of preferred stock, and to increase or decrease the number of shares in any series of preferred stock, subject to limitations prescribed by law or by our certificate of incorporation. There was no preferred stock issued and outstanding as of December 31, 2019 or 2018.

Common Stock

As of December 31, 2019, we had authorized 495,000,000 shares of voting $0.001 par value common stock. Each holder of the common stock is entitled to one vote per common share. At its discretion, the board of directors may declare dividends on shares of common stock, subject to the prior rights of our preferred stockholders. Upon liquidation or dissolution, holders of common stock will receive distributions only after preferred stock preferences have been satisfied.

The following shares of common stock have been reserved for future issuance as of the date presented (in thousands):

	December 31, 2019
Option awards outstanding		3,262
Restricted stock units outstanding		761
Common stock reserved under equity incentive plans		1,246
Common stock reserved under employee stock purchase plan		490
Total		5,759

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Note 9. Stock-Based Awards

2016 Equity Incentive Plan

In June 2016, our board of directors adopted and our stockholders approved the 2016 Equity Incentive Plan, or the 2016 Plan, which became effective in July 2016 at which time the 2010 Equity Incentive Plan, or the 2010 Plan, was terminated. Our 2000 Stock Plan was terminated in March 2010. The number of shares of common stock reserved for issuance under the 2016 Plan may increase on January 1 of each year, beginning on January 1, 2017 and ending on and including January 1, 2026, by the lower of (1) 1,825,000 shares; (2) 5% of the total number of shares of common stock outstanding on December 31 of the preceding calendar year; and (3) a lesser number of shares determined by our board of directors. The 2016 Plan provides for the grant of incentive or non-qualified stock options, restricted stock, restricted stock units, stock appreciation rights and performance shares or performance units to employees, non-employee directors, and consultants.

All options granted under the 2000 Stock Plan, the 2010 Plan and the 2016 Plan have a maximum 10-year term and generally vest and become exercisable over four years of continued employment or service as defined in each option agreement. We generally grant stock options with exercise prices that equal the fair value of the common stock on the date of grant. As allowed under the 2016 Plan, there are a few exceptions to this vesting schedule, which provide for vesting at different rates or based on achievement of performance targets. We utilize newly issued shares to satisfy option exercises.

Stock Options

On April 18, 2018, we commenced a voluntary stock option exchange program, designed to provide eligible employees an opportunity to exchange certain outstanding underwater stock options for a lesser amount of new options to be granted with lower exercise prices. Stock options eligible for exchange were those with an exercise price per share equal to or greater than $21.72, whether vested or unvested. All employees (including executive officers but excluding the chief executive officer) who held options and remain employed through the date of grant for new options were eligible to participate in the offer. Members of the board of directors were not eligible to participate. The option exchange program expired on May 16, 2018. Options for an aggregate of approximately 1.0 million shares were tendered by employees, representing 73% of the total shares underlying stock options eligible for exchange.

On May 16, 2018, we granted options for an aggregate of 0.7 million shares in exchange for the eligible options surrendered. The new options were granted under, and subject to, the terms and conditions of the 2016 Plan. The exercise price of the new stock options is $17.33, which was the closing price of our common stock on May 16, 2018. No incremental stock option expense was recognized for the exchange, because the fair value of the surrendered options, as determined based on the Black-Scholes option-pricing model, was equal to or greater than the fair value of the new stock options issued in the exchange.

The following table summarizes option award activity for the year ended December 31, 2019 (in thousands, except per share data and years):

	Number of Shares			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life (Years)		Total Intrinsic Value
Outstanding at December 31, 2018		3,603		$	17.67		8.43	$	7,898
Granted		571			31.09
Exercised		(508	)		12.35
Forfeited or expired		(404	)		18.87
Outstanding at December 31, 2019		3,262			20.70		7.98		22,033
Vested and exercisable at December 31, 2019		1,416		$	16.39		7.00	$	14,345

We estimate the fair value of options granted at the date of grant using the Black-Scholes option-pricing model with the following assumptions for the periods presented:

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	Year Ended December 31,
	2019		2018		2017
Risk-free interest rate	1.4% – 2.6%		2.3% – 3.1%		1.8% – 2.2%
Expected dividends yield	None		None		None
Expected volatility	60.8% - 64.3%		57.7% - 66.1%		52.2% – 59.1%
Weighted-average expected term	6.08		6.04		6.08
Weighted-average fair value of options granted	$	18.31	$	11.85	$	19.15

We determined that it was not practicable to calculate the volatility of our share price since we do not have an extensive public trading history for shares of our common stock. Therefore, we estimated our volatility based on a combination of our historical volatility since becoming a publicly traded company and reported market value data for a group of publicly-traded entities that we believe are relatively comparable after consideration of their size, stage of lifecycle, profitability, growth and risk and return on investment.

To determine the expected term, we generally apply and have historically applied the simplified approach in which the expected term of an award is presumed to be the mid-point between the vesting date and the expiration date of the options as we do not have sufficient historical exercise data to provide a reasonable basis for an estimate of expected term.

The total intrinsic value of options exercised during 2019, 2018 and 2017 was $10.0 million, $4.3 million and $14.9 million, respectively.The total grant date fair value of options vested was $14.8 million, $6.0 million and $3.1 million during 2019, 2018 and 2017, respectively.

As of December 31, 2019, our total unrecognized stock-based compensation cost related to unvested stock options was $26.2 million, which we will recognize over the weighted-average remaining requisite service period of 2.6 years.

Restricted Stock Units

The following table summarizes activity for restricted stock units, RSUs, including RSUs with performance conditions, or PSUs, for the year ended December 31, 2019 (in thousands, except per share data):

	Number of Shares						Weighted-Average Grant Date Fair Value
	RSUs			PSUs			RSUs		PSUs
Outstanding at December 31, 2018		32			—		$	20.21	$	—
Granted		533			267			33.60		17.84
Vested		(44	)		—			21.52		—
Forfeited		(12	)		(15	)		34.58		17.03
Outstanding at December 31, 2019		509			252		$	33.77	$	17.88

PSUs granted during the year ended December 31, 2019 were primarily related to a PSU bonus program that replaces what has historically been our annual cash-bonus program for our senior executives and other bonus-eligible employees. The number of PSUs that ultimately vest depend on attainment of a financial metric for the fiscal year and continued employment through the vest date. Based upon attainment of the financial metric we expect approximately 239,000 shares to vest in the first quarter of 2020.

We record compensation expense for each period based on our estimate of the most probable number of PSUs that will vest, and we recognize the expense over the related service period. The stock-based compensation expense we recognized for the PSUs was $3.4 million for the year ended December 31, 2019

The total fair value of RSUs vested was $1.5 million during both 2019 and 2018 and not material during 2017.

The fair value of the outstanding restricted stock units will be recorded as stock-based compensation expense over the vesting period. As of December 31, 2019, there was $15.3 million of total unrecognized compensation cost related to unvested restricted stock units, which is expected to be recognized over a weighted average period of 3.4 years. As of December 31, 2019, there was $0.9 million of total unrecognized compensation cost related to PSUs, which is expected to be recognized in less than one year.

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Employee Stock Purchase Plan

In 2016, we adopted the 2016 Employee Stock Purchase Plan, or the ESPP, which became effective in July 2016. Under the ESPP, eligible employees can authorize payroll deductions for amounts up to 15% of their eligible compensation. A participant may purchase a maximum of 4,000 shares each six-month period or some lesser number of shares as determined by the IRS rules. The offering periods generally start on the first trading day on or after February 20 and August 20 of each year. Participants in an offering period will be granted the right to purchase common shares at a price per share that is 85% of the least of the fair market value of the shares at (1) the first day of the offering period and (2) the end of each purchase period within the offering period. The number of shares reserved for the ESPP may increase each year, beginning on January 1, 2017 and continuing through and including January 1, 2036, by the least of: (1) 1% of the total number of shares of common stock outstanding on the first day of such year; (2) 365,411 shares of common stock; and (3) such amount as determined by our board of directors.

As of December 31, 2019, the total unrecognized stock-based compensation related to the ESPP was $0.2 million and will be recognized on a straight-line basis over the weighted-average remaining service period of less than one year.

We estimate the fair value of the ESPP granted at the start of the offering period using the Black-Scholes option-pricing model with the following assumptions for the periods presented:

	Year Ended December 31,
	2019	2018	2017
Risk-free interest rate	1.9% – 2.5%	2.4%	0.7% – 1.1%
Expected term	0.5 years	0.3 years	0.5 years
Expected volatility	66.5% – 72.3%	75.9%	66.5% – 71.2%

Stock-Based Compensation Expense

The following table presents the detail of stock-based compensation expense amounts included in our consolidated statements of operations for the periods indicated (in thousands):

	Year Ended December 31,
	2019		2018		2017
Cost of revenue	$	772	$	469	$	231
Research and development expense		6,427		3,663		2,431
Sales and marketing expense		6,003		4,166		3,113
General and administrative expense		5,284		3,019		1,653
Total stock-based compensation expense	$	18,486	$	11,317	$	7,428

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Note 10. Leases

The following table presents the components of lease expense in our consolidated statements of operations for the periods presented (in thousands):

	Year Ended
	December 31, 2019
Operating lease costs(a)
Single lease costs	$	4,170
Variable lease costs		1,623
Sublease income(b)		(1,796	)
Total operating lease costs	$	3,997
Finance lease costs:
Amortization of right-of-use assets		433
Interest on lease liabilities		51
Total finance lease costs		484
(a) Includes short-term lease costs, which are immaterial.
(b) Sublease income is related to unused office space that was sublet as part of the restructuring in fiscal 2018 where we continue to be the primary obligor for the lease.

The following table presents supplemental cash flow information related to leases for the periods presented (in thousands):

	Year Ended
	December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used in operating leases	$	4,617
Operating cash flows used in finance leases		51
Financing cash flows used in finance leases		522

The following table presents weighted-average remaining lease term and weighted-average discount rate related to leases as of:

	December 31, 2019
Weighted-average remaining lease term (years)
Operating leases		6.1
Finance leases		0.7
Weighted-average discount rate
Operating leases		6.8	%
Finance leases		10.1	%

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The following table presents future lease payments under operating and finance leases as of December 31, 2019 (in thousands):

	Operating Leases								Finance Leases
	Lease Payments			Sublease Income			Net		Lease Payments
2020	$	4,755		$	(1,373	)	$	3,382	$	269
2021		4,790			(1,414	)		3,376		1
2022		4,650			(1,457	)		3,193		—
2023		3,263			(123	)		3,140		—
2024		3,219			—			3,219		—
Thereafter		6,728			—			6,728		—
Total lease payments	$	27,405		$	(4,367	)	$	23,038	$	270
Less: Imputed interest		(5,118	)							(11	)
Present value of lease liabilities		22,287								259
Less: Current portion of lease liabilities		(3,380	)							(258	)
Lease liabilities, net of current portion	$	18,907							$	1

The following table presents future minimum lease payments under operating and capital leases in accordance with Topic 840 as of December 31, 2018 (in thousands):

	Operating Leases		Capital Leases
2019	$	3,573	$	575
2020		3,340		270
2021		3,305		—
2022		3,193		—
2023		3,140		—
Thereafter		9,947		—
Total minimum lease payments	$	26,498	$	845
Less: Imputed interest				(64	)
Present value of capital lease obligations				781
Less: Current portion of capital lease obligations				(523	)
Capital lease obligations net of current portion			$	258

Note 11. Commitments and Contingencies

Indemnifications

In the normal course of business, we may enter into agreements that require us to indemnify either customers or suppliers for specific risks. While we cannot estimate our maximum exposure under these indemnification provisions, to date they have not had a material impact on our consolidated results of operations or financial condition.

Litigation

From time to time, we are subject to various legal proceedings or claims that arise in the ordinary course of business. We accrue a liability when management believes that it is both probable that a liability has been incurred and the amount of loss can be reasonably estimated. As of December 31, 2019. and 2018, we have not recorded any such liabilities. The following is a brief description of the more significant legal proceedings. Although we believe that resolving such claims, individually or in aggregate, will not have a material adverse impact on our financial statements, these matters are subject to inherent uncertainties.

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Federal Securities Class Actions

On August 7, 2018, a class action complaint for violation of the federal securities laws was filed in the U.S. District Court for the Central District of California against us, our chief executive officer and chief operating officer. Captioned Schultz v. Impinj, Inc., et al, the complaint, purportedly brought on behalf of all purchasers of our common stock from May 7, 2018 through and including August 2, 2018, asserted claims that our quarterly statement filed on Form 10-Q for the first quarter of 2018 and a concurrent press release made false or misleading statements about our business prospects and financial condition. The complaint sought monetary damages, costs and expenses. On October 3, 2018, the plaintiff voluntarily dismissed this complaint.

On August 27, 2018, a second-class action complaint for violation of the federal securities laws was filed in the U.S. District Court for the Western District of Washington against us, our chief executive officer, chief operating officer and former chief financial officer. Captioned Montemarano v. Impinj, Inc., et al., the complaint, purportedly brought on behalf of all purchasers of our common stock from May 4, 2017 through and including August 2, 2018, asserts claims that we made false or misleading statements in our financial statements, press releases and conference calls during the purported class period in violation of Section 10(b) of the Securities Exchange Act of 1934, as amended, or the Securities Exchange Act. The complaint seeks monetary damages, costs and expenses.

On October 2, 2018, a third-class action complaint for violation of the federal securities laws was filed in the U.S. District Court for the Western District of Washington against us, our chief executive officer, chief operating officer and former chief financial officer. Captioned Employees’ Retirement System of the City of Baton Rouge and Parish of East Baton Rouge v. Impinj, Inc., et al., the complaint, purportedly brought on behalf of all purchasers of our common stock from November 3, 2016 through and including February 15, 2018, asserts claims that we made false or misleading statements about customer demand for our products and inventory in SEC filings, press releases and conference calls in violation of Section 10(b) of the Securities Exchange Act. The complaint seeks monetary damages, costs and expenses.

On January 14, 2019, the U.S. District Court for the Western District of Washington consolidated the Montemarano and Baton Rouge actions and appointed the Employees’ Retirement System of the City of Baton Rouge and Parish of East Baton Rouge as lead plaintiff. On February 13, 2019, lead plaintiff filed a consolidated amended complaint. The consolidated amended complaint alleges that from July 21, 2016 through February 15, 2018, we made false or misleading statements about customer demand and the capability of our products and platform in violation of Section 10(b) of the Securities Exchange Act.

On March 19, 2019, we filed a motion to dismiss the consolidated amended complaint, and on October 4, 2019, the court entered an order granting in part and denying in part the motion. The court dismissed the Section 10(b) claim against our President and chief operating officer, dismissed product capability-related allegations against our former chief financial officer, and dismissed allegations that defendants made false or misleading statements concerning increasing demand prior to the first quarter of 2017. The court denied the motion as to all other claims and defendants. A trial date has been set for February 1, 2021.

New York State Securities Class Action

On January 31, 2019, a fourth-class action complaint for violation of the federal securities laws was filed in the Supreme Court of the State of New York for the County of New York against us, our chief executive officer, chief operating officer, former chief financial officer, members of our board of directors and the underwriters of our July 2016 initial public stock offering, or IPO, and December 2016 secondary public offering, or SPO. Captioned Plymouth County Retirement System v. Impinj, Inc., et al., the complaint, purportedly brought on behalf of purchasers of our stock pursuant to or traceable to our IPO and SPO, alleges that we made false or misleading statements in the registration statements and prospectuses in those offerings concerning demand for our products and inventory in violation of Section 11 of the Securities Act of 1933. On April 9, 2019, the New York Supreme Court entered an order staying the action and requiring the parties to update the court every 90 days as to the status of the pending federal securities class actions discussed above.

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Shareholder Derivative Actions

On October 26, 2018, two shareholder derivative actions were filed in the U.S. District Court for the District of Delaware against our chief executive officer, chief operating officer, former chief financial officer and certain of our directors. We are a nominal defendant. On November 8, 2018, a third shareholder derivative action was filed in this same court against the same defendants. Captioned Weiss v. Diorio, et al., Fotouhi v. Diorio, et al., and De la Fuente v. Diorio, et al., the derivative complaints, purportedly brought on behalf of us, allege that the defendants breached their fiduciary duties to us and allegedly made false or misleading statements and omissions of material fact in violation of Section 14(a) of the Securities Exchange Act regarding our business and operations. The derivative actions include claims for, among other things, unspecified damages in favor of us, corporate actions to purportedly improve our corporate governance, and an award of costs and expenses to the derivative plaintiffs, including attorneys’ fees. On January 28, 2019, the Delaware federal court entered a stipulated order that stayed these derivative actions until resolution of the pending federal securities class actions described above.

Patent Infringement Claims and Counterclaims

On June 6, 2019, we filed a patent infringement lawsuit against NXP USA, Inc., a Delaware corporation and subsidiary of NXP Semiconductors N.V., or NXP, in the U.S. District Court for the Northern District of California. Our complaint alleges that certain NXP integrated circuit products infringed and continue to infringe numerous U.S. patents owned by us. We are seeking, among other things, past damages, including lost profits, and no less than a reasonable royalty; enhanced damages for willful infringement; and reasonable attorneys’ fees and costs for infringement of each of the asserted patents. We are also seeking an injunction against NXP making, selling, using, offering for sale or importing the RAIN RFID integrated circuit product NXP introduced in 2017. Defendants responded to our complaint on September 30, 2019 citing numerous defenses including denying infringement, claiming our asserted patents are invalid, and that the infringed patents were licensed on a royalty-free basis under Impinj’s commitments to GS1 EPCglobal.

On October 4, 2019, NXP USA, Inc. and NXP, filed a patent infringement lawsuit against us in the U.S. District Court for the District of Delaware. The complaint alleges that certain of our products infringed and continue to infringe numerous U.S. patents owned by NXP or NXP USA, Inc. The plaintiffs are seeking, among other things, past damages adequate to compensate them for our alleged infringement of each of the patents-in-suit, and reasonable attorneys’ fees and costs. They are also seeking an injunction against us, enjoining continuing acts of infringement of the patents-in-suit. As of the date of this report, there is no court date set.

Obligations with Third-Party Manufacturers

We manufacture products with third-party manufacturers. We are committed to purchase $17.3 million of inventory as of December 31, 2019.

Note 12. Restructuring

On February 13, 2018, we initiated a restructuring plan to align our strategic and financial objectives and optimize our resources for long-term growth, including a reduction-in-force affecting approximately 9% of our employees, subleasing unused office space and closing some remote offices. The restructuring was substantially complete as of June 30, 2018. As a result of the restructuring, we recorded a restructuring charge of $3.7 million for the year ended December 31, 2018.

The following table summarizes the activity associated with the restructuring (in thousands):

	Employee Termination Benefits		Cease-Use Costs			Total
Balance at December 31, 2018	$	94	$	975		$	1,069
Effect of the new lease standard adoption(1)		—		(975	)		(975	)
Balance at December 31, 2019	$	94	$	—		$	94
(1) Upon adoption of the new lease standard on January 1, 2019, restructuring liabilities related to cease-use costs were netted against the operating lease right-of-use assets.

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Note 13. Deferred Revenue

Deferred revenue, comprising individually immaterial amounts for extended warranty, enhanced maintenance and advanced payments on nonrecurring engineering services contracts, represents contracted revenue that has not yet been recognized.

The following table presents the changes in deferred revenue for the periods presented (in thousands):

	Year Ended December 31,
	2019			2018
Balance at beginning of period	$	834		$	1,215
Deferral of revenue		718			587
Recognition of deferred revenue		(788	)		(968	)
Balance at end of period	$	764		$	834

During 2019, we recognized as revenue a total of $0.6 million related to amounts that were recorded in deferred revenue as of December 31, 2018. During 2018, we recognized as revenue a total of $0.9 million related to amounts that were recorded in deferred revenue as of December 31, 2017.

Note 14. Segment Reporting

We have one reportable and operating segment: the development and sale of our products and services. Our reportable segment has been identified based on how our chief operating decision-maker manages our business, makes operating decisions and evaluates our operating performance. Our chief executive officer acts as the chief operating decision-maker and reviews financial and operational information on an entity-wide basis. We have one business activity and there are no segment managers who are held accountable for operations, operating results or plans for levels or components. Accordingly, we have determined that we have a single reporting segment and operating unit structure.

Our chief executive officer reviews information about revenue categories, including endpoint ICs and systems. We define systems as reader ICs, reader modules, readers, gateways and software The following table presents our revenue categories for the periods presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Revenue:
Endpoint ICs	$	97,657	$	84,974	$	91,699
Systems		55,179		37,659		33,601
Total revenue	$	152,836	$	122,633	$	125,300

Our assets are primarily located in the United States and not allocated to any specific geographic region. Therefore, geographic information is presented only for total revenue. Substantially all our long-lived assets are located in the United States.

Revenue presented in the following table is based on the location of the value-added resellers, inlay manufacturers, reader OEMs, distributors or end users who purchased products and services directly from us. For sales to our resellers and distributors, their location may be different from the locations of the ultimate end users. The following table presents our sales by geography for the periods presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Americas	$	53,260	$	30,636	$	29,656
Asia Pacific		89,012		79,290		80,531
Europe, Middle East and Africa		10,564		12,707		15,113
Total revenue	$	152,836	$	122,633	$	125,300

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Total revenue in the United States, included in Americas, was $50.2 million, $29.5 million and $28.8 million for the years ended December 31, 2019, 2018 and 2017, respectively. Total revenue in China (including Hong Kong), included in Asia Pacific, was $70.8 million, $64.3 million and $68.0 million for the years ended December 31, 2019, 2018 and 2017, respectively. No sales to countries other than the United States and China accounted for more than 10% of revenue for the years ended December 31, 2019, 2018 and 2017.

Note 15. Net Loss per Share

For the periods presented, the following table provides a reconciliation of the numerator and denominator used in computing basic and diluted net loss per share (in thousands, expect per share amounts):

	Year Ended December 31,
	2019			2018			2017
Numerator:
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)
Denominator:
Weighted-average shares outstanding — basic and diluted		21,847			21,334			20,680
Net loss per share — basic and diluted	$	(1.05	)	$	(1.65	)	$	(0.84	)

The following outstanding options and restricted stock units and unvested shares excluded from the computation of diluted net loss per share for the periods presented because their effect would have been antidilutive (in thousands):

	Year Ended December 31,
	2019		2018		2017
Stock options and restricted stock units		3,908		3,284		2,911
Unvested shares of common stock subject to repurchase		3		20		48

Since we expect to settle the principal amount of the outstanding 2019 Notes in cash, we use the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. For the 2019 Notes, the conversion spread for the notes has a dilutive impact on diluted net income per share when the average market price of our common stock during each reporting period exceeds $34.55 per share. There was no conversion spread for the 2019 Notes during 2019.

Note 16. Retirement Plans

In 2001, we adopted a salary deferral 401(k) plan for our employees. The plan allows employees to contribute a percentage of their pretax earnings annually, subject to limitations imposed by the Internal Revenue Service. The plan also allows us to make a matching contribution, subject to certain limitations. To date, we have not made any contributions to the plan.

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

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our chief executive officer and our principal financial officer, evaluated the effectiveness of our disclosure controls and procedures as of December 31, 2019. Disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is (1) recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms and (2) accumulated and communicated to management, including its principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure. Based on the evaluation of our disclosure controls and procedures, our chief executive officer and principal financial officer concluded that our disclosure controls and procedures were effective at a reasonable assurance level as of December 31, 2019.

Management’s Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined under Rule 13a-15(f) and 15d-15(f) under the Exchange Act. We conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework). Based on our evaluation, our management concluded that our internal control over financial reporting was effective as of December 31, 2019.

This annual report does not include an attestation report of our independent registered public accounting firm regarding internal control over financial reporting. Management’s report was not subject to attestation by our registered public accounting firm pursuant to rules of the Securities and Exchange Commission for emerging growth companies that permit us to provide only management’s report in this annual report.

Changes in Internal Control over Financial Reporting

There were no changes that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting during the three months ended December 31, 2019.

Limitations on Controls

Our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable assurance of achieving the desired control objectives. Our management recognizes that any control system, no matter how well designed and operated, is based upon certain judgments and assumptions and cannot provide absolute assurance that its objectives will be met. Similarly, an evaluation of controls cannot provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, have been detected.

Item 9B. Other Information

None.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this item is incorporated by reference to our definitive proxy statement relating to the 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the SEC within 120 days after the end of the 2019 fiscal year.

We have adopted a Code of Ethics that applies to our Chief Executive Officer, Chief Financial Officer, principal accounting officer and controller and persons performing similar functions. The Code of Ethics is posted on our website at http://corporate-governance.impinj.com. We intend to satisfy the disclosure requirements under Item 5.05 of Form 8-K regarding an amendment to, or waiver from, a provision of the Code of Ethics by posting such information on our website at the address specified above.

Item 11. Executive Compensation

The information required by this item is incorporated by reference to our definitive proxy statement relating to the 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the SEC within 120 days after the end of the 2019 fiscal year.

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

The information required by this item is incorporated by reference to our definitive proxy statement relating to the 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the SEC within 120 days after the end of the 2019 fiscal year.

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

The information required by this item is incorporated by reference to our definitive proxy statement relating to the 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the SEC within 120 days after the end of the 2019 fiscal year.

Item 14. Principal Accounting Fees and Services

The information required by this item is incorporated by reference to our definitive proxy statement relating to the 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the SEC within 120 days after the end of the 2019 fiscal year.

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PART IV

Item 15. Exhibits and Financial Statement Schedules

(a)(1) Financial Statements

We have filed the financial statements listed in the Index to Consolidated Financial Statements as a part of this report.

(a)(2) Financial Statement Schedules

All financial statement schedules have been omitted because they are not applicable, not material or the required information is presented in the financial statements or the notes thereto.

(a)(3) Exhibits

The list of exhibits included in the Exhibit Index to this report is incorporated herein by reference.

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		INCORPORATION BY REFERENCE
NUMBER	DESCRIPTION	Form	Date	Number
3.1	Amended and Restated Certificate of Incorporation	10-Q	9/2/2016	3.1
3.2	Amended and Restated Bylaws	S-1/A	7/11/2016	3.2
4.1	Description of the registrant’s Common Stock
4.2	Specimen Common Stock Certificate of the registrant	S-1/A	7/11/2016	4.1
4.3	Amended and Restated Investors’ Rights Agreement, dated July 13, 2012, by and among the registrant and the investors and founders named therein	S-1	6/2/2016	4.2
4.4	Indenture, dated as of December 16, 2019, between Impinj, Inc., and U.S. Bank National Association, as trustee.	8-K	12/16/2019	4.1
4.5	Form of 2.00% Convertible Senior Notes due 2026 (included in Exhibit 4.1)	8-K	12/16/2019	4.1
10.1+	Form of Director and Executive Officer Indemnification Agreement	S-1/A	7/11/2016	10.1
10.2+	2000 Stock Plan, as amended	S-1	6/2/2016	10.2
10.3+	Form of Notice of Stock Option Grant and Stock Option Agreement permitting early exercise under the 2000 Stock Plan	S-1	6/2/2016	10.3
10.4+	2010 Equity Incentive Plan, as amended	S-1	6/2/2016	10.4
10.5+	Form of Notice of Stock Option Grant and Stock Option Agreement under the 2010 Equity Incentive Plan	S-1	6/2/2016	10.5
10.6+	Form of Notice of Stock Option Grant and Stock Option Agreement permitting early exercise under the 2010 Equity Incentive Plan	S-1	6/2/2016	10.6
10.7+	2016 Equity Incentive Plan	S-1/A	7/11/2016	10.7
10.8+	Form of Notice of Stock Option Grant and Stock Option Agreement under the 2016 Equity Incentive Plan	S-1/A	7/11/2016	10.8
10.9+	2016 Employee Stock Purchase Plan	S-1/A	7/11/2016	10.9
10.10+	Amended and Restated Diorio Employment Agreement, dated December 19, 2008, between the registrant and Chris Diorio, Ph.D.	S-1	6/2/2016	10.12
10.11+	First Amendment to Diorio Employment Agreement, dated February 20, 2009, between the registrant and Chris Diorio, Ph.D.	S-1	6/2/2016	10.13
10.12+	Executive Employment Agreement, dated April 1, 2014, between the registrant and Eric Brodersen	S-1	6/2/2016	10.14
10.13+	First Amendment to Brodersen Employment Agreement, dated February 9, 2015, between the registrant and Eric Brodersen	S-1	6/2/2016	10.15

99

10.14+	Offer Letter, dated January 6, 2020, between the registrant and Cary Baker
10.15	Office Lease, dated December 10, 2014, by and between the registrant and 400 Fairview LLC	S-1	6/2/2016	10.21
10.15A	First Amendment to Lease, dated July 31, 2015, between the registrant and 400 Fairview LLC	S-1	6/2/2016	10.21A
10.15B	Second Amendment to Lease, dated March 4, 2016, between the registrant and 400 Fairview LLC	S-1	6/2/2016	10.21B
10.15C	Third Amendment to Lease, dated March 28, 2016, between the registrant and 400 Fairview LLC	S-1	6/2/2016	10.21C
10.16	Office Lease, dated November 17, 2004, between the registrant and Bedford Property Investors, Inc., as amended by the First Amendment to Lease, dated July 21, 2006, by and between the registrant and Fremont Lake Union Center LLC and the Second Amendment to Lease, dated December 11, 2009, by and between the registrant and Fremont Lake Union Center LLC	S-1	6/2/2016	10.22
10.17†	License Agreement, dated July 3, 2008, between the registrant and Intel Corporation	S-1	6/2/2016	10.24
10.18†	Purchase Agreement—Services Phase 2, dated December 23, 2009, by and between the registrant and Intel Corporation	S-1	6/2/2016	10.25
10.19†	Amendment No. 1 to Purchase Agreement—Services Phase 2, dated March 26, 2010, between the registrant and Intel Corporation	S-1	6/2/2016	10.26
10.20†	Amendment No. 2 to Purchase Agreement—Services Phase 2, dated April 20, 2011, between the registrant and Intel Corporation	S-1	6/2/2016	10.27
10.21†	Amendment No. 3 to Purchase Agreement—Services Phase 2, dated November 15, 2011, between the registrant and Intel Corporation	S-1	6/2/2016	10.28
10.22†	Amendment No. 4 to Purchase Agreement—Services Phase 2, dated April 25, 2013, between the registrant and Intel Corporation	S-1	6/2/2016	10.29
10.23†	Amendment No. 5 to Purchase Agreement—Services Phase 2, dated June 12, 2013, between the registrant and Intel Corporation	S-1	6/2/2016	10.30
10.24+	Form of Notice of Restricted Stock Unit Grant and Restricted Stock Unit Agreement under the 2016 Equity Incentive Plan	10-Q	8/14/2017	10.1
10.25	Letter Agreement, dated as of June 20, 2018, among Impinj, Inc., Sylebra HK Company Limited, Sylebra Capital Management and Daniel P. Gibson	8-K	6/26/2018	10.1
10.26+	Executive Employment Agreement, dated April 28, 2017, between the registrant and Jeff Dossett	10-K	2/28/2020	10.32

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10.27	Form of Capped Call Transaction Confirmation	8-K	12/16/2019	10.1
21.1	Subsidiaries of the registrant	S-1	6/2/2016	21.1
23.1	Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm
24.1	Powers of Attorney (contained on signature page)
31.1	Certification of Principal Executive Officer Required Under Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended
31.2	Certification of Principal Financial Officer Required Under Rule 13a-14(a) and 15d-14(a) of the Securities Exchange Act of 1934, as amended
32.1*	Certification of Principal Executive Officer Required Under Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. §1350.
32.2*	Certification of Principal Financial Officer Required Under Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended, and 18 U.S.C. §1350.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Linkbase Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document
+	Indicates management contract or compensatory plan, contract or arrangement.
*	The certifications attached as Exhibits 32.1 and 32.2 that accompany this Quarterly Report on Form 10-K are not deemed filed with the Securities and Exchange Commission and are not to be incorporated by reference into any filing of Impinj, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, whether made before or after the date of this Form 10-K, irrespective of any general incorporation language contained in such filing.
†	Confidential treatment has been requested with respect to certain portions of this exhibit. Omitted portions have been filed separately with the Securities and Exchange Commission.

Item 16. Form 10-K Summary

None.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	Impinj, Inc.
Date: March 2, 2020	By:	/s/ Cary Baker
		Cary Baker
		Chief Financial Officer (Principal Financial Officer)

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Chris Diorio, Ph.D. and Cary Baker, and each of them, with full power of substitution and resubstitution and full power to act without the other, as his or her true and lawful attorney-in-fact and agent to act in his or her name, place and stead and to execute in the name and on behalf of each person, individually and in each capacity stated below, and to file, any and all documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing, ratifying and confirming all that said attorneys-in-fact and agents or any of them or their and his or her substitute or substitutes, may lawfully do or cause to be done by virtue thereof.

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

Name	Title	Date
/s/Chris Diorio	Chief Executive Officer and Vice Chair (Principal Executive Officer)	March 2, 2020
Chris Diorio, Ph.D.
/s/ Cary Baker	Chief Financial Officer	March 2, 2020
Cary Baker	(Principal Financial Officer)
/s/ Peter van Oppen	Chair	March 2, 2020
Peter van Oppen
/s/ Tom A. Alberg	Director	March 2, 2020
Tom A. Alberg
/s/ Clinton Bybee	Director	March 2, 2020
Clinton Bybee
/s/ Gregory Sessler	Director	March 2, 2020
Gregory Sessler
/s/ Theresa Wise	Director	March 2, 2020
Theresa Wise
/s/ Daniel Gibson	Director	March 2, 2020
Daniel Gibson
/s/ Cathal Phelan	Director	March 2, 2020
Cathal Phelan

102

EX-4.1

Exhibit 4.1

IMPINJ, INC.

DESCRIPTION OF COMMON STOCK

The common stock of Impinj, Inc. is listed on the Nasdaq Global Select Market under the symbol “PI.” All outstanding shares of common stock are validly issued, fully paid, and nonassessable.

The following description of the terms of our common stock is not complete and is qualified in its entirety by reference to our Restated Certificate of Incorporation, as amended (the “Certificate of Incorporation”), and our Amended and Restated Bylaws (the “Bylaws”), both of which are exhibits to our Annual Reports on Form 10-K.

Voting Rights

Each holder of common stock is entitled to one vote for each share on all matters submitted to a vote of the stockholders, including the election of directors. Our certificate of incorporation and bylaws do not provide for cumulative voting rights. Therefore, the holders of a plurality of the shares of common stock entitled to vote in any election of directors can elect all of the directors standing for election, if they should so choose. The holders of a majority of the stock issued and outstanding and entitled to vote, present in person or represented by proxy, shall constitute a quorum for the transaction of business at all meetings of the stockholders. With respect to matters other than the election of directors, at any meeting of the stockholders at which a quorum is present or represented, the affirmative vote of a majority of the voting power of the shares present in person or represented by proxy at such meeting and entitled to vote on the subject matter shall be the act of the stockholders, except as otherwise required by law.

Dividends

Subject to preferences that may be applicable to any then-outstanding preferred stock, holders of our common stock are entitled to receive dividends, if any, as may be declared from time to time by our board of directors out of legally available funds.

Liquidation

In the event of our liquidation, dissolution or winding up, holders of our common stock will be entitled to share ratably in the net assets legally available for distribution to stockholders after the payment of all of our debts and other liabilities and the satisfaction of any liquidation preference granted to the holders of any then-outstanding shares of preferred stock.

Rights and Preferences

Holders of our common stock have no preemptive, conversion, subscription or other rights, and there are no redemption or sinking fund provisions applicable to the common stock. The rights, preferences and privileges of the holders of our common stock are subject to and may be adversely affected by, the rights of the holders of shares of any series of preferred stock that we may designate in the future.

Anti-Takeover Provisions of Delaware and Washington Law and Our Certificate of Incorporation and Bylaws

Delaware Law

We are subject to Section 203 of the General Corporation Law of the State of Delaware. Section 203 generally prohibits a publicly held Delaware corporation from engaging in a “business combination” with

Exhibit 4.1

any “interested stockholder” for a period of three years after the date of thetransaction in which the person became an interested stockholder, unless:

• prior to the date of the transaction, the board of directors of the corporation approved either the business combination or the transaction which resulted in the stockholder becoming an interested stockholder;

• upon consummation of the transaction which resulted in the stockholder becoming an interested stockholder, the interested stockholder owned at least 85% of the voting stock of the corporation outstanding at the time the transaction commenced, excluding for purposes of determining the number of shares outstanding (1) shares owned by persons who are directors and also officers and (2) shares owned by employee stock plans in which employee participants do not have the right to determine confidentially whether shares held subject to the plan will be tendered in a tender or exchange offer; or

• on or subsequent to the date of the transaction, the business combination is approved by the board and authorized at an annual or special meeting of stockholders, and not by written consent, by the affirmative vote of at least two-thirds of the outstanding voting stock which is not owned by the interested stockholder.

Section 203 defines a business combination to include:

• any merger or consolidation involving the corporation and the interested stockholder;

• any sale, transfer, pledge or other disposition involving the interested stockholder of 10% or more of the assets of the corporation;

• subject to exceptions, any transaction that results in the issuance or transfer by the corporation of any stock of the corporation to the interested stockholder;

• any transaction involving the corporation that has the effect of increasing the proportionate share of the stock or any class or series of the corporation beneficially owned by the interested stockholder; and

• the receipt by the interested stockholder of the benefit of any loans, advances, guarantees, pledges or other financial benefits provided by or through the corporation.

In general, Section 203 defines an interested stockholder as any entity or person beneficially owning 15% or more of the outstanding voting stock of the corporation and any entity or person affiliated with or controlling or controlled by the entity or person.

Washington Business Corporation Act

The laws of Washington, where our principal executive offices are located, impose restrictions oncertain transactions between certain foreign corporations and significant stockholders. In particular, the Washington Business Corporation Act (the “WBCA”), prohibits a “target corporation,” with certainexceptions, from engaging in certain “significant business transactions” with a person or group of persons that beneficially owns 10% or more of the voting power of the target corporation, which is referred to as an “acquiring person,” for a period of five years after such acquisition, unless the transaction or

Exhibit 4.1

acquisition of shares is approved by a majority of the members of the targetcorporation’s board ofdirectors prior to the time of acquisition. Such prohibited transactions mayinclude, among other things:

• any merger or consolidation with, disposition of assets to, or issuance or redemption of stock toor from, the acquiring person;

• any termination of 5% or more of the employees of the target corporation as a result of theacquiring person’s acquisition of 10% or more of the shares; and

• allowing the acquiring person to receive any disproportionate benefit as a stockholder.

After the five-year period, a significant business transaction may take place as long as it complies with certain fair price provisions of the statute or is approved at an annual or special meeting of stockholders.

We will be considered a “target corporation” so long as our principal executive office is located in Washington and (1) a majority of our employees are residents of the state of Washington or we employ more than one thousand residents of the state of Washington; (2) a majority of our tangible assets, measured by market value, are located in the state of Washington or we have more than $50 million worth of tangible assets located in the state of Washington; and (3) any one of the following: (a) more than 10% of our stockholders of record are resident in the state of Washington; (b) more than 10% of our shares are owned of record by state residents; or (c) 1,000 or more of our stockholders of record are resident in the state.

If we meet the definition of a target corporation, the WBCA may have the effect of delaying, deferring or preventing a change of control.

Certificate of Incorporation and BylawsProvisions of our certificate of incorporation and bylaws may delay or discourage transactions involving an actual or potential change in our control or change in our management, including transactions in which stockholders might otherwise receive a premium for their shares, or transactions that our stockholders might otherwise deem to be in their best interests. Therefore, these provisions could adversely affect the price of our common stock. Among other things, our certificate of incorporation and bylaws:

• permit our board of directors to issue up to 5,000,000 shares of preferred stock, with any rights, preferences and privileges as they may designate, including the right to approve an acquisition or other change in our control;

• provide that the authorized number of directors may be changed only by resolution of the board of directors, subject to the rights of any holders of preferred stock;

• provide that all vacancies, including newly created directorships, may, except as otherwise required by law, be filled by the affirmative vote of a majority of directors then in office, even if less than a quorum;

• divide our board of directors into three classes, each of which stands for election once every three years;

• provide that a director may only be removed from the board of directors by the stockholders for cause;

Exhibit 4.1

• require that any action to be taken by our stockholders must be effected at a duly called annual or special meeting of stockholders and not be taken by written consent;

• provide that stockholders seeking to present proposals before a meeting of stockholders or to nominate candidates for election as directors at a meeting of stockholders must provide notice in writing in a timely manner, and also meet specific requirements as to the form and content of a stockholder’s notice;

• do not provide for cumulative voting rights (therefore allowing the holders of a plurality of the shares of common stock entitled to vote in any election of directors to elect all of the directors standing for election, if they should so choose);

• provide that special meetings of our stockholders may be called only by the board of directors, the chairman of the board of directors, our chief executive officer or president (in the absence of a chief executive officer);

• provide that stockholders will be permitted to amend certain provisions of our bylaws only upon receiving at least two-thirds of the votes entitled to be cast by holders of all outstanding shares then entitled to vote generally in the election of directors, voting together as a single class; and

• provide that, unless we otherwise consent in writing, a state or federal court located within the State of Delaware shall be the sole and exclusive forum for (1) any derivative action or proceeding brought on behalf of the company; (2) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers or other employees to the company or our stockholders; (3) any action asserting a claim against the company arising pursuant to any provision of the General Corporation Law of the State of Delaware; or (4) any action asserting a claim against the company governed by the internal affairs doctrine.

The amendment of any of these provisions requires approval by the holders of at least two-thirds of our outstanding common stock, voting as a single class.

EX-10.14

Exhibit 10.14

IMPINJ, INC.

EXECUTIVE EMPLOYMENT AGREEMENT

This Executive Employment Agreement (the “Agreement”) is entered into as of January 6, 2020 (the “Effective Date”) by and between Cary L. Baker (“Executive”) and Impinj, Inc., a Delaware corporation (the “Company”), and sets forth the terms and conditions with respect to Executive’s employment with the Company during the Employment Term (as defined below).

NOW THEREFORE, in consideration of the mutual covenants contained herein, the Company and Executive agree as follows:

AGREEMENT

1. Duties and Scope of Employment.

a. Position and Duties. Executive will serve as Chief Financial Officer of the Company and will report to the Company’s Chief Executive Officer. The duties and responsibilities of Executive shall include the duties and responsibilities for Executive’s corporate office and position as set forth in Company’s bylaws from time to time in effect and such other duties and responsibilities as Company’s Chief Executive Officer may from time to time reasonably assign to Executive, in all cases to be consistent with Executive’s corporate office and position. The period of Executive’s employment under this Agreement is referred to herein as the “Employment Term.”

b. Obligations. During the Employment Term, Executive will perform his duties faithfully and to the best of his ability and will devote his full business efforts and time to the Company. For the duration of the Employment Term, Executive agrees not to actively engage in any other employment, occupation or consulting activity for any direct or indirect remuneration without the prior approval of the Board of Directors or its authorized committee (in either case, the “Board”).Executive will not render commercial or professional services of any nature to any person or organization, whether or not for compensation, without the prior written consent of the Board. Executive’s approved outside board commitments as of the Effective Date are set forth in Exhibit B. Notwithstanding the foregoing, nothing in this Agreement will prevent Executive from accepting speaking or presentation engagements in exchange for honoraria or from serving on boards of charitable organizations, provided that such activities do not materially interfere with Executive’s obligations to the Company as described above.

2. At-Will Employment. The parties agree that Executive’s employment with the Company will be “at-will”employment and may be terminated at any time with or without cause or notice. Executive understands and agrees that neither his job performance nor promotions, commendations, bonuses or the like from the Company give rise to or in any way serve as the basis for modification, amendment, or extension, by implication or otherwise, of his employment with the Company. However, as described in this Agreement, Executive may be entitled to severance benefits depending on the circumstances of Executive’s termination of employment with the Company.

3. Announcement and Start Dates. Executive will commence employment on February 17, 2020 (the “StartDate”).Within four (4) business days of the Effective Date, the Company will make a public announcement of Executive’s commitment to assume the role of CFO as of the Start Date.

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4. Compensation.

a. Base Salary. During the Employment Term, the Company will pay Executive an annual salary of $335,000 as compensation for his services (the “Base Salary”).The Base Salary will be paid periodically in accordance with the Company’s normal payroll practices, and will be subject to the usual, required withholding. Executive’s salary will be subject to review, and adjustments may be made based upon the Company’s normal performance review practices.

b. Performance Bonus. Executive shall be eligible to receive additional annual bonus compensation according to certain milestones and company performance metrics to be established by the Company and otherwise applicable to the Company’s executive team (the “Performance Bonus”).Performance Bonus compensation shall target sixty-five percent (65%) of Base Salary at one hundred percent (100%) achievement of the established milestones and performance metrics, and otherwise will be subject to the Company’s annual Executive Bonus Plan. Performance Bonus compensation may be lower than sixty-five percent (65%) of Base Salary if the performance targets are not met. The terms of the Executive Bonus Plan are typically structured and approved annually by the Board or Compensation Committee, as appropriate. The Company shall pay any actual Performance Bonus in no event later than March 15 of the calendar year following the calendar year to which the bonus is earned. Executive must be employed on the payment date to be eligible to receive his Performance Bonus. Executive’s target Performance Bonus will be subject to review, and adjustments may be made based upon the Company’s normal performance review practices. The Company reserves the right to modify and/or interpret all of its incentive compensation plans, including the Executive Bonus Plan, at any time.

c. Equity.

i. Subject to approval by the Board or its authorized designee, Executive will be granted an option to purchase 60,000 shares of Company common stock (the “Option”) under the Company’s 2016 Equity Incentive Plan (the “2016 Plan”) at an exercise price equal to the fair market value of the shares on the date of grant as determined under the 2016 Plan. The Option will vest as follows: l/4^th of the total number of shares shall vest on the one-year anniversary of the Start Date, and 1/48^th of the total number of shares shall vest each month thereafter (on the same day of the month as the Start Date), in each case, so long as Executive remains a Service Provider (as defined in the 2016 Plan), so that all shares subject to the Option shall have vested after 48 months following the Start Date.

ii. Subject to approval by the Board or its authorized designee, Executive will be granted an option to purchase 60,000 restricted stock units (the “RSUs”) of Company common stock under the Company’s 2016 Plan. The RSUs will vest as follows: One fourth of the RSUs will vest on the one-year anniversary of your RSU grant date, and thereafter 1/16 of the total number of RSUs will vest every three months thereafter (on the same day of the month as your grant date) so long as Executive remains a Service Provider (as defined in the 2016 Plan), so that all the RSUs shall have vested after 48 months following the RSU grant date.

iii. The Option and award RSUs each will be subject to the terms of the Plan and the applicable award agreement between you and the Company evidencing the applicable grant (collectively, the “Equity Documents”), and further subject to applicable federal and state securities laws.

d. Employee Benefits. During the Employment Term, Executive will be entitled to participate in the employee benefit plans currently and hereafter maintained by the Company of general applicability to other senior executives of the Company, including, without limitation, the Company’s group medical, dental, vision, life insurance, and disability plans. The Company reserves the right to cancel or change the benefit plans and programs it offers to its employees at any time.

e. Paid Time Off. During the Employment Term, Executive will be entitled to paid time off under the Company’s Open Paid-Time Off (PTO) policy, which provides for mutually and reasonably agreed upon paid time off and is subject to change at the discretion of the Company.

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5. Severance.

a. Termination for other than Cause. Death or Disability or Resignation for Good Reason Apart from Change of Control. If, after ninety (90) days following Executive’s Start Date but prior to a Change of Control, or after twelve (12) months following a Change of Control, (1) the Company terminates Executive’s employment with the Company other than for Cause, death or Disability, or (2) Executive resigns from his employment with the Company for Good Reason, then, subject to Section 6, Executive will be entitled to:

i. continuing payments of severance pay at a rate equal to his Base Salary, as then in effect, for six (6) months from the date of such termination in accordance with the Company’s normal payroll policies and subject to the usual, required withholding,

ii. reimbursement of Executive’s expenses in continuing group health insurance coverage for himself and his eligible covered dependents under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), for up to six (6) months, provided Executive makes a timely election for and continues to be eligible for such continued coverage; provided, however, that if the Company determines in its sole discretion that it cannot make the COBRA reimbursements without potentially violating applicable law (including, without limitation, Section 2716 of the Public Health Service Act), the Company will in lieu thereof provide to Executive a taxable monthly payment in an amount equal to the monthly COBRA premium that Executive would be required to pay to continue Executive’s group health coverage in effect on the date of Executive’s termination of employment (which amount will be based on the premium for the first month of COBRA coverage), which payments will be made regardless of whether Executive elects COBRA continuation coverage and will commence on the month following Executive’s termination of employment and will end on the earlier of (x) the date upon which Executive obtains other employment or (y) the date the Company has paid an amount equal to six (6) payments, and

iii. such portion of that year's Performance Bonus, if applicable, as Executive shall have earned (if any) as of the date of such termination, as determined in good faith by the Board, which amount shall be subject to the usual, required withholding.

iv. Accelerated vesting of 25% of then unvested portion of outstanding equity awards and extension of exercise period for up to one year following termination.

b. Termination for other than Cause. Death or Disability or Resignation for Good Reason Following a Change of Control. If within twelve (12) months following a Change of Control (1) the Company terminates Executive’s employment with the Company other than for Cause, death or Disability, or (2) Executive resigns from his employment with the Company for Good Reason, then, subject to Section 6, Executive will be entitled to:

i. continuing payments of severance pay at a rate equal to his Base Salary rate, as then in effect, for six (6) months from the date of such termination in accordance with the Company’s normal payroll policies and subject to the usual, required withholding,

ii. reimbursement of Executive’s expenses in continuing group health insurance coverage for himself and his eligible covered dependents under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), for up to six (6) months, provided Executive makes a timely election for and continues to be eligible for such continued coverage; provided, however, that if the Company determines in its sole discretion that it cannot make the COBRA reimbursements without potentially violating applicable law (including, without limitation, Section 2716 of the Public Health Service Act), the Company will in lieu thereof provide to Executive a taxable monthly payment in an amount equal to the monthly COBRA premium that Executive would be required to pay to continue Executive’s

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group health coverage in effect on the date of Executive’s termination of employment (which amount will be based on the premium for the first month of COBRA coverage), which payments will be made regardless of whether Executive elects COBRA continuation coverage and will commence on the month following Executive’s termination of employment and will end on the earlier of (x) the date upon which Executive obtains other employment or (y) the date the Company has paid an amount equal to six (6) payments,

iii. such portion of that year's Performance Bonus, if applicable, as Executive shall have earned (if any) as of the date of such termination, which amount shall be subject to the usual, required withholding, and

iv. accelerated vesting of all outstanding Company equity awards as to one-hundred percent (100%) of the then unvested portion of any such Company equity award.

c. Termination for Cause. Death or Disability: Resignation without Good Reason.If Executive’s employment with the Company terminates voluntarily by Executive (except upon resignation for Good Reason), for Cause by the Company or due to Executive’s death or Disability, then

i. all vesting will terminate immediately with respect to Executive’s outstanding Company equity awards, and

ii. all payments of compensation by the Company to Executive hereunder will terminate immediately (except as to amounts already earned, including such portion of that year’s Performance Bonus as Executive shall have earned (if any) as of the date of such termination, as determined in good faith by the Board).

6. Conditions to Receipt of Severance; No Duty to Mitigate.

a. Separation Agreement and Release of Claims. The continued payment of salary set forth in Section 5(a) shall be contingent upon Executive signing and not revoking the Company’s standard release of claims agreement upon termination and provided that such release becomes effective no later than 120 days following the termination date or such earlier date required by the release agreement (such deadline, the “Release Deadline”). If the release does not become effective by the Release Deadline, Executive will forfeit any rights to severance or benefits under this Agreement. In no event will severance payments or benefits be paid or provided until the release actually becomes effective. In the event the termination occurs at a time during the calendar year where the release could become effective in the calendar year following the calendar year in which Executive’s termination occurs, then any severance payments or benefits under this Agreement that would be considered Payments (as defined in Section 6(d)) will be paid on the first payroll date to occur during the calendar year following the calendar year in which such termination occurs, or, if later,

i. the Release Deadline,

ii. such time as required by the payment schedule applicable to each payment or benefit as set forth in Section 5, or

iii. such time as required by Section 6(d)(ii).

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Noncompete. Executive acknowledges that the nature of the Company’s business is such that ifExecutive were to become employed by, or substantially involved in, the business of a competitor of the Company following the termination of Executive’s employment with the Company, it would be very difficult for Executive not to rely on or use the Company’s trade secrets and confidential information. Thus, to avoid the inevitable disclosure of the Company’s trade secrets and confidential information and other protectible interests, Executive agrees and acknowledges thatExecutive’s right to receive the severance payments set forth in Section 5(a) (to the extent Executive is otherwise entitled to such payments) will be conditioned upon Executive not directly or indirectly engaging in (whether as an employee, consultant, agent, proprietor, principal, partner, stockholder, corporate officer, director or otherwise), nor having any ownership interest in or participating in the financing, operation, management or control of, any person, firm, corporation or business that competes with Company (or any parent or subsidiary of the Company) or is a customer of the Company (or any parent or subsidiary of the Company) provided, however, that that nothing in this Section 6(b) will prevent Executive from owning as a passive investment less than 1% of the outstanding shares of the capital stock of a publicly-held corporation if such shares are actively traded on a national stock exchange or similar market or medium. Upon any breach of this section, all severance payments and post- termination benefits pursuant to Section 5 will immediately cease and Executive will be able to exercise his vested stock options to acquire Company common stock through the longer of:

i. thirty (30) days following the commencement of such competition, and

ii. such period of time as originally set forth in his option agreement (without taking into effect the one-year extended post-termination exercise period set forth in Section 5) to exercise any stock options or other similar rights to acquire Company common stock.

b. Non-Solicitation. The receipt of any severance benefits pursuant to this Agreement will be subject to Executive not violating the provisions of Section 9. In the event Executive breaches the provisions of Section 9, all continuing payments and benefits to which Executive may otherwise be entitled pursuant to Section 5 will immediately cease and Executive will have the longer of

i. thirty (30) days following the commencement of such competition, and

ii. such period of time as originally set forth in his award agreement to exercise any stock options or other similar rights to acquire Company common stock.

c. Section 409A.

i. Notwithstanding anything to the contrary in this Agreement, no severance pay or benefits payable upon separation that is payable to Executive, if any, pursuant to this Agreement, when considered together with any other severance payments or separation benefits that are considered deferred compensation (together, the “Payments”) under Section 409A will be payable until Executive has a “separation from service” within the meaning of Section 409A.

ii. Notwithstanding anything to the contrary in this Agreement, if Executive is a “specified employee” within the meaning of Section 409A at the time of Executive’s termination of employment, then, if required, the Payments, which are otherwise due to Executive on or within the six (6) month period following Executive’s termination will accrue, to the extent required, during such six (6) month period and will become payable in a lump sum payment on the date six (6) months and one (1) day following the date of Executive’s termination of employment or the date of Executive’s death, if earlier. All subsequent Payments, if any, will be payable in accordance with the payment schedule applicable to each payment or benefit.

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iii. Any amounts paid under this Agreement that satisfy the requirements of the “short- term deferral” rule set forth in Section 1.409A-l(b)(4) of the Treasury Regulations will not constitute Payments for purposes of clause (i) above.

iv. Each payment and benefit payable under the Agreement is intended to constitute a separate payment for purposes of Section 1,409A-2(b)(2) of the Treasury Regulations.

v. Any amount paid under this Agreement that qualifies as a payment made as a result of an involuntary separation from service pursuant to Section 1.409A-l(b)(9)(iii) of the Treasury Regulations that does not exceed the Section 409A Limit (as defined below) will not constitute a Payment for purposes of clause (i) above.

vi. The foregoing provisions are intended to be exempt from or comply with the requirements of Section 409A so that none of the severance payments and benefits to be provided hereunder will be subject to the additional tax imposed under Section 409A, and any ambiguities herein will be interpreted to so comply. The Company and Executive agree to work together in good faith to consider amendments to this Agreement and to take such reasonable actions which are necessary, appropriate or desirable to avoid imposition of any additional tax or income recognition prior to actual payment to Executive under Section 409A.

d. No Duty to Mitigate. Executive will not be required to mitigate the amount of any payment contemplated by this Agreement, nor will any earnings that Executive may receive from any other source reduce any such payment.

e. Section 280G. In the event that the payments under this Agreement or otherwise payable to you constitute “parachute payments” within the meaning of Section 280G of the Code and (ii) but for this Section 6(f), would be subject to the excise tax imposed by Section 4999 of the Code, then Executive’s benefits hereunder shall be payable either:

i. in full or

ii. as to such lesser amount which would result in no portion of such severance benefits being subject to excise tax under Section 4999 of the Code, whichever of the foregoing amounts, taking into account the applicable federal, state and local income taxes and the excise tax imposed by Section 4999, results in the receipt by Executive on an after-tax basis, of the greatest amount of benefits hereunder, notwithstanding that all or some portion of such benefits may be taxable under Section 4999 of the Code.

Unless the Company and Executive agree in writing, any determination required under this Section 6(f) shall be made in writing by the public accountants designated by the Company. If the amount of the aggregate payments or property transferred to Executive must be reduced under this Section 6(f), then the reduction in payments and/or benefits shall occur in the following order: (1) reduction of cash payments, if any; (2) cancellation of accelerated vesting of equity awards, if any; and (3) reduction of other benefits, if any, paid to Executive.

7. Definitions.

a. Cause. For purposes of this Agreement, “Cause” is defined as, in the Company’s reasoned discretion:

i. Executive’s conviction of a felony or gross misdemeanor, or the Company’s belief Executive has done so;

ii. Executive’s commission of any material act of fraud or dishonesty with respect to the Company;

iii. Executive’s intentional misconduct that has a materially adverse effect upon the Company’s business;

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iv. Executive’s breach of any of Executive’s fiduciary obligations as an officer of the Company or of any contractual obligation that Executive has to the Company, in either case where the breach has a materially adverse effect on the Company’s business;

v. Executive’s willful misconduct or gross negligence in performance of Executive’s duties hereunder, including Executive’s refusal to comply in any material respect with the legal directives of the Board so long as such directives are not inconsistent with Executive’s position and duties, or

vi. Executive’s death or Disability.

However, prior to any termination of Executive’s employment for Cause defined in clauses (iii), (iv) or (v) above, the Company shall give written notice to Executive of the actions or omissions deemed to constitute the Cause event, and if it is possible to cure the specified default, Executive shall have a period of not less than thirty (30) days in which to cure the specified default in Executive’s performance.

b. Change of Control. For purposes of this Agreement, “Change of Control” of the Company shall have the same meaning as given it in the 2016 Plan.

c. Code. For purposes of this Agreement, “Code” means the Internal Revenue Code of 1986, as amended.

d. Disability.For purposes of this Agreement, “Disability” means Executive’s inability to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than three months, or such longer period as may be required under applicable law. Executive shall not be considered disabled unless Executive furnishes proof in such form or manner, and at such times, as the Company may require.

e. Good Reason. For the purposes of this Agreement, “Good Reason” means Executive’s resignation that is effective within two (2) years following the occurrence of any Company cure period (discussed below) one or more of the following events without Executive’s consent:

i. a material reduction of Executive’s Base Salary (for purposes of this Agreement, the reduction of Base Salary by less than 10% from Executive’s then present Base Salary shall not be considered a material reduction), provided that an across-the-board reduction in the salary level of all other senior executives by the same percentage amount as part of a general salary level reduction shall not constitute such a material reduction;

ii. the assignment to Executive of any duties, or the reduction of Executive’s duties, either of which results in a material diminution in Executive’s authority, duties or responsibilities with the Company in effect immediately prior to such assignment or reduction, or the removal of Executive from such position and responsibilities, unless Executive is provided with comparable authority, duties or responsibilities; provided that, neither a mere change in title alone nor reassignment following a Change of Control to a position that is substantially similar to the position held prior to the Change of Control in terms of job duties, responsibilities and requirements shall constitute a material reduction in job responsibilities; or

iii. a material change in the geographic location at which Executive must perform services (for purposes of this Agreement, the relocation of Executive to a facility or a location less than 50 miles from Executive’s then-present location shall not be considered a material change in geographic location).

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Executive will not resign for “Good Reason” without first providing the Company with written notice of the acts or omissions constituting the grounds for “Good Reason” within 90 days of the initial existence of the grounds for “Good Reason” and a reasonable cure period of not less than 30 days following the date of such notice.

f. Section 409A Limit. For purposes of this Agreement, “Section 409A Limit” means the lesser of two times:

i. Executive’s annualized compensation based upon the annual rate of pay paid to Executive during Executive’s taxable year preceding Executive’s taxable year of Executive’s termination of employment as determined under Treasury Regulation 1.409A-1 (b)(9)(iii)(A)(l) and any Internal Revenue Service guidance issued with respect thereto; or

ii. the maximum amount that may be taken into account under a qualified plan pursuant to Section 401(a)(17) of the Code for the year in which Executive’s employment is terminated.

8. Confidential Information. Executive agrees to maintain his obligations under the Company’s standard Proprietary Information and Inventions Agreement, attached hereto as Exhibit A, dated on even date herewith (the “Proprietary Information Agreement”).

Non-Solicitation. Until the date one year after the termination of Executive’s employment with the Company for any reason, Executive agrees not, either directly or indirectly, to solicit, induce, attempt to hire, recruit, take away, hire any employee of the Company (or any parent or subsidiary of the Company) or cause an employee to leave his employment either for Executive or for any other entity or person. The hiring of an individual violates this paragraph regardless of who initiated contact. Executive represents that he (a) is familiar with the foregoing covenant not to solicit, and (b) is fully aware of his obligations hereunder, including, without limitation, the reasonableness of the length of time, scope and geographic coverage of these covenants.

9. Assignment. This Agreement will be binding upon and inure to the benefit of (a) the heirs, executors and legal representatives of Executive upon Executive’s death and (b) any successor of the Company. Any such successor of the Company will be deemed substituted for the Company under the terms of this Agreement for all purposes. For this purpose, “successor” means any person, firm, corporation or other business entity which at any time, whether by purchase, merger or otherwise, directly or indirectly acquires all or substantially all of the assets or business of the Company. None of the rights of Executive to receive any form of compensation payable pursuant to this Agreement may be assigned or transferred except by will or the laws of descent and distribution. Any other attempted assignment, transfer, conveyance or other disposition of Executive’s right to compensation or other benefits will be null and void.

10. Notices. All notices, requests, demands and other communications called for hereunder will be in writing and will be deemed given (a) on the date of delivery if delivered personally, (b) 1 day after being sent by a well-established commercial overnight service, or (c) four (4) days after being mailed by registered or certified mail, return receipt requested, prepaid and addressed to the parties or their successors at the following addresses, or at such other addresses as the parties may later designate in writing:

If to the Company:	Impinj, Inc.
	400 Fairview Ave. N., Suite 1200 Seattle, Washington 98104 Attn: General Counsel
If to Executive:	at the last residential address known by the Company

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11. Severability. In the event that any provision hereof becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Agreement will continue in full force andeffect without said provision.

12. Arbitration. In consideration of Executive’s employment with the Company, its promise to arbitrate all employment-related disputes and his receipt of the compensation, pay raises and other benefits paid to his by the Company, at present and in the future, Executive agrees that any and all controversies, claims, or disputes with anyone (including the Company and any employee, officer, director, shareholder or benefit plan of the Company in their capacity as such or otherwise) arising out of, relating to, or resulting from Executive’s employment with the Company or the termination of Executive’s employment with the Company, including any breach of this Agreement, will be subject to binding arbitration under the American Arbitration Association National Rules for the Resolution of Employment Disputes, supplemented by the Washington Code of Civil Procedure (the “Rules”) and pursuant to Washington law, except as permitted by law. Disputes which Executive agrees to arbitrate, and thereby agrees to waive any right to a trial by jury, include any statutory claims under state or federal law, including, but not limited to, claims under Title VII of the Civil Rights Act of 1964, the Americans with Disabilities Act of 1990, the Age Discrimination in Employment Act of 1967, the Older Workers Benefit Protection Act, the Worker Adjustment and Retraining Notification Act, the Family and Medical Leave Act, the Washington Law Against Discrimination, claims of harassment, discrimination or wrongful termination and any statutory claims. Executive further understands that this Agreement to arbitrate also applies to any disputes that the Company may have with his.

a. Procedure. Executive agrees that any arbitration will take place in Seattle, Washington and be administered by the American Arbitration Association (“AAA”) and that the neutral arbitrator will be selected in a manner consistent with its National Rules for the Resolution of Employment Disputes. Executive agrees that the arbitrator will have the power to decide any motions brought by any party to the arbitration, including motions for summary judgment and/or adjudication and motions to dismiss and demurrers, prior to any arbitration hearing. Executive also agrees that the arbitrator will have the power to award any remedies, including attorneys’ fees and costs, available under applicable law. Executive understands that the Company will pay for any administrative or hearing fees charged by the arbitrator or AAA except that Executive will pay the first $125.00 of any filing fees associated with any arbitration Executive initiates. Executive agrees that the arbitrator will administer and conduct any arbitration in a manner consistent with the Rules and that to the extent that the AAA’s National Rules for the Resolution of Employment Disputes conflict with the Rules, the Rules will take precedence. Executive agrees that the decision of the arbitrator will be in writing.

b. Remedy. Except as provided by this Agreement, applicable law, and by the Rules, including any provisional relief offered therein, arbitration will be the sole, exclusive and final remedy for any dispute between Executive and the Company. Accordingly, except as provided for by the Rules, applicable law, and this Agreement, neither Executive nor the Company will be permitted to pursue court action regarding claims that are subject to arbitration. Notwithstanding, the arbitrator will not have the authority to disregard or refuse to enforce any lawful Company policy, and the arbitrator will not order or require the Company to adopt a policy not otherwise required by law which the Company has notadopted.

c. Administrative Relief. Executive understands that this Agreement does not prohibit him from pursuing an administrative claim with a local, state or federal administrative body such as the Department of Fair Employment and Housing, the Equal Employment Opportunity Commission or the workers’ compensation board. This Agreement does, however, preclude Executive from pursuing court action regarding any such claim, except as permitted by law.

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d. Voluntary Nature of Agreement. Executive acknowledges and agrees that Executive is executing this Agreement voluntarily and without any duress or undue influence by the Company or anyone else. Executive further acknowledges and agrees that Executive has carefully read this Agreement and that Executive has asked any questions needed for Executive to understand the terms, consequences and binding effect of this Agreement and fully understands it, including that Executive is waiving Executive’s right to a jury trial. Finally, Executive agrees that Executive has been provided an opportunity to seek the advice of an attorney of Executive’s choice before signing this Agreement.

13. Integration. This Agreement, together with any Company equity plans and equity agreements, the Stock Agreements, and the Proprietary Information Agreement, represents the entire agreement and understanding between the parties as to the subject matter herein and supersedes all prior or contemporaneous agreements whether written or oral. This Agreement may be modified only by agreement of the parties by a written instrument executed by the parties that is designated as an amendment to this Agreement.

14. Waiver of Breach. The waiver of a breach of any term or provision of this Agreement, which must be in writing, will not operate as or be construed to be a waiver of any other previous or subsequent breach of this Agreement.

15. Headings.All captions and section headings used in this Agreement are for convenient reference only and do not form a part of this Agreement.

16. Tax Withholding. All payments made pursuant to this Agreement will be subject to withholding of applicable taxes.

17. Governing Law. This Agreement will be governed by the laws of the State of Washington except for its conflict of laws’ provisions. Venue for any dispute will be Seattle, Washington.

18. Acknowledgment. Executive acknowledges that he has had the opportunity to discuss this matter with and obtain advice from his private attorney, has had sufficient time to, and has carefully read and fully understands all the provisions of this Agreement, and is knowingly and voluntarily entering into this Agreement.

19. Counterparts. This Agreement may be executed in counterparts, and each counterpart will have the same force and effect as an original and will constitute an effective, binding agreement on the part of each of the undersigned.

[The space below intentionally left blank.]

10

IN WITNESS WHEREOF, each of the parties has executed this Agreement, in the case of the Company by their duly authorized officers, as of the day and year first above written.

Impinj, Inc.	Cary L. Baker
By:	By:	/s/ Cary L. Baker
Chief Executive Officer	Executive

11

Exhibit A

Proprietary Information and Inventions Agreement
Impinj, Inc.

In exchange for my becoming employed by Impinj, Inc. or any of its current or future subsidiaries, affiliates, successors, or assigns (collectively, the “Company”), and for any cash and equity compensation for my services, I hereby agree as follows:

1. Confidentiality Obligation. I understand and agree that all Proprietary Information (as defined in Section 6 shall be the sole property of the Company and its assignees, including all trade secrets, patents, copyrights and other rights in connection therewith. I hereby assign to the Company any rights I may acquire in such Proprietary Information. I will hold in confidence and not directly or indirectly use or disclose, both during my employment by or consulting relationship with the Company and for a period of five (5) years after its termination (irrespective of the reason for such termination), any Proprietary Information I obtain or create during the period of my employment or consulting relationship, whether or not during working hours, except to the extent authorized by the Company, until such Proprietary Information becomes generally known. I agree not to make copies of such Proprietary Information except as authorized by the Company. Upon termination of my employment or consulting relationship or upon an earlier request by the Company, I will return or deliver to the Company all tangible forms of such Proprietary Information in my possession or control, including but not limited to drawings, specifications, documents, records, devices, models or any other material and copies or reproductions thereof. This agreement and my obligations under it are independent of my continued service with the Company and I promise to keep all Confidential Information secret after the termination, for any reason, of my employment from the Company.

2. Ownership of Physical Property. All documents, apparatus, equipment and other physical property in any form, whether or not pertaining to Proprietary Information, furnished to me by the Company or produced by me or others in connection with my employment or consulting relationship shall be and remain the sole property of the Company. I shall return to the Company all such documents, materials and property as and when requested by the Company, except only (i) my personal copies of records relating to my compensation; (ii) if applicable, my personal copies of any materials evidencing shares of the Company’s capital stock purchased by me and options to purchase shares of the Company’s capital stock granted to me; (iii) my copy of this Agreement and (iv) my personal property and personal documents I bring with me to the Company and any personal correspondence and personal materials that I accumulate and keep at my office during my employment (my “Personal Documents”). Even if the Company does not so request, I shall return all such documents, materials and property upon termination of my employment or consulting relationship, and, except for my Personal Documents, I will not take with me any such documents, material or property or any reproduction thereof upon such termination. In the event of the termination of the Relationship, I agree to sign and deliver the “Termination Certification” attached hereto as Exhibit A-2; however, my failure to sign and deliver the Termination Certificate shall in no way diminish my continuing obligations under this Agreement.

3. Assignment of Inventions

a. Without further compensation, I hereby agree to promptly disclose to the Company, all Inventions (as defined below) which I may solely or jointly develop or reduce to practice during the period of my employment or consulting relationship with the Company which (i) pertain to any line of business activity of the Company, (ii) are aided by the use of time, material or facilities of the Company, whether or not during working hours or (iii) relate to any of my work during the period of my employment or consulting relationship with the Company, whether or not during normal working hours (“Company Inventions”). During the term of my employment or

1

consultancy, all Company Inventions that I conceive, reduce to practice, develop or have developed (in whole or in part, either alone or jointly with others) shall be the sole property of the Company and its assignees to the maximum extent permitted by law (and to the fullest extent permitted by law shall be deemed “works made for hire”), and the Company and its assignees shall be the sole owner of all patents, copyrights, trademarks, trade secrets and other rights in connection therewith. I hereby assign to the Company any rights that I may have or acquire in such Company Inventions.

b. I attach hereto as Exhibit A, a complete list of all Inventions, if any, made by me prior to my employment or consulting relationship with the Company that are relevant to the Company’s business, and I represent and warrant that such list is complete. If no such list is attached to this Agreement, I represent that I have no such Inventions at the time of signing this Agreement. If in the course of my employment or consultancy (as the case may be) with the Company, I use or incorporate into a product or process an Invention not covered by Section 4(a) of this Agreement in which I have an interest, the Company is hereby granted a nonexclusive, fully paid-up, royalty-free, perpetual, worldwide license of my interest to use and sublicense such Invention without restriction of any kind.

NOTICE REQUIRED BY REVISED CODE OF WASHINGTON 49.44.140:

Any assignment of Inventions required by this Agreement does not apply to an Invention for which no equipment, supplies, facility or trade secret information of the Company was used and which was developed entirely on the employee’s own time, unless (a) the Invention relates (i) directly to the business of the Company or (ii) to the Company’s actual or demonstrably anticipated research or development or (b) the Invention results from any work performed by the employee for the Company.

4. Further Assistance: Power of Attorney. I agree to perform, during and after my employment or consulting relationship, all acts deemed necessary or desirable by the Company to permit and assist it, at its expense, in obtaining and enforcing the full benefits, enjoyment, rights and title throughout the world in the Inventions assigned to the Company as set forth in Section 4 above. Such acts may include, but are not limited to, execution of documents and assistance or cooperation in legal proceedings. I hereby irrevocably designate the Company and its duly authorized officers and agents as my agent and attorney-in fact, to execute and file on my behalf any such applications and to do all other lawful acts to further the prosecution and issuance of patents, copyright and mask work registrations related to such Inventions. This power of attorney shall not be affected by my subsequent incapacity.

5. Inventions. As used in this Agreement, the term “Inventions” means discoveries, developments, concepts, designs, ideas, know-how, improvements, inventions, trade secrets and/or original works of authorship, whether or not patentable, copyrightable or otherwise legally protectable. This includes, but is not limited to, any new product, machine, article of manufacture, biological material, method, procedure, process, technique, use, equipment, device, apparatus, system, compound, formulation, composition of matter, design or configuration of any kind, or any improvement thereon.

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6. Proprietary Information. As used in this Agreement, the term “Proprietary Information” means information or physical material not generally known or available outside the Company or information or physical material entrusted to the Company by third parties. This includes, but is not limited to, Inventions, confidential knowledge, copyrights, product ideas, techniques, processes, formulas, object codes, mask works and/or any other information of any type relatingto documentation, laboratory notebooks, data, schematics, algorithms, flow charts, mechanisms, research, manufacture, improvements, assembly, installation, marketing, forecasts, sales, pricing, customers, the salaries, duties, qualifications, performance levels and terms of compensation of other employees, and cost or other financial data concerning any of the foregoing for the Company and its operations. Proprietary Information may be contained in material such as drawings, samples, procedures, specifications, reports, studies, customer or supplier lists, budgets, cost or price lists, compilations or computer programs, or may be in the nature of unwritten knowledge or know-how.

7. Protected Activity Not Prohibited. I agree that nothing in this Agreement limits or prohibits me from filing a charge or complaint with, or otherwise communicating or cooperating with or participating in any investigation or proceeding that may be conducted by, any federal, state or local government agency or commission, including the Securities and Exchange Commission, the Equal Employment Opportunity Commission, the Occupational Safety and Health Administration, and the National Labor Relations Board (“Government Agencies”), including disclosing documents or other information as permitted by law, without giving notice to, or receiving authorization from, the Company. Notwithstanding, in making any such disclosures or communications, I agree to take all reasonable precautions to prevent any unauthorized use or disclosure of any information that may constitute Proprietary Information to any parties other than the Government Agencies. I further understand that I am not permitted to disclose the Company’s attorney-client privileged communications or attorney work product. In addition, I hereby acknowledge that the Company has provided me with notice in compliance with the Defend Trade Secrets Act of 2016 regarding immunity from liability for limited disclosures of trade secrets. The full text of the notice is attached in Exhibit A-3.

8. No Conflicts. I represent that my performance of all the terms of this Agreement as an employee of or consultant to the Company does not and will not breach any agreement to keep in confidence proprietary information, knowledge or data acquired by me in confidence or in trust prior to my becoming an employee or consultant of the Company, and I will not disclose to the Company, or induce the Company to use, any confidential or proprietary information or material belonging to any previous employer or others. I agree not to enter into any written or oral agreement that conflicts with the provisions of this Agreement.

9. No Interference. I certify that, to the best of my information and belief, I am not a party to any other agreement that will interfere with my full compliance with this Agreement.

10. Effects of Agreement. This Agreement (a) shall survive for a period of five (5) years beyond the termination of my employment by or consulting relationship with the Company, (b) inures to the benefit of successors and assigns of the Company and (c) is binding upon my heirs and legal representatives.

11. Injunctive Relief. I acknowledge that violation of this Agreement by me may cause irreparable injury to the Company, and I agree that the Company will be entitled to seek extraordinary relief in court, including, but not limited to, temporary restraining orders, preliminary injunctions and permanent injunctions without the necessity of posting a bond or other security and without prejudice to any other rights and remedies that the Company may have for a breach of this Agreement.

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12. Miscellaneous. This Agreement supersedes any oral, written or other communications or agreements concerning the subject matter of this Agreement and may be amended or waived only by a written instrument signed by me and the Chief Executive Officer of the Company. This Agreement shall be governed by the laws of the State of Washington applicable to contracts entered into and performed entirely within the State of Washington, without giving effect to principles of conflict of laws. If any provision of this Agreement is held to be unenforceableunder applicable law, then such provision shall be excluded from this Agreement only to the extent unenforceable, and the remainder of such provision and of this Agreement shall be enforceable in accordance with its terms.

13. Acknowledgment. I certify and acknowledge that I have carefully read all of the provisions of this Agreement and that I understand and will fully and faithfully comply with such provisions.

Impinj, Inc.	Cary L. Baker
	/s/ Cary L. Baker

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Exhibit A-l

Impinj, Inc.

400 Fairview Ave. N., Suite 1200

Seattle, WA 98104

1. The following is a complete list of all Inventions relevant to the subject matter of my employment by the Company that have been made or conceived or first reduced to practice by me, alone or jointly with others or which have become known to me prior to my employment by the Company. I represent that such list is complete.

2. I propose to bring to my employment or consultancy the following materials and documents of a former employer:

☒	No material or documents.
	See below:

Cary L. Baker
By:	/s/ Cary L. Baker
Dated:	1/6/20

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Exhibit A-2

Termination

Certification

This is to certify that I do not have in my possession, nor have I failed to return, any devices, records, data, notes, reports, proposals, lists, correspondence, specifications, drawings, blueprints, sketches, laboratory notebooks, flow charts, materials, equipment, other documents or property, or copies or reproductions of any aforementioned items belonging to Impinj, Inc., its subsidiaries, affiliates, successors or assigns (together the “Company”).

I further certify that I have complied with all the terms of the Company’s Proprietary Information and Invention Assignment Agreement signed by me, including the reporting of any inventions and original works of authorship (as defined therein), conceived or made by me (solely or jointly with others) covered by that agreement.

I further agree that, in compliance with the Proprietary Information and Invention Assignment Agreement, I will preserve as confidential all trade secrets, confidential knowledge, data or other proprietary information relating to products, processes, know-how, designs, formulas, developmental or experimental work, computer programs, data bases, other original works of authorship, customer lists, business plans, financial information or other subject matter pertaining to any business of the Company or any of its employees, clients, consultants or licensees.

I further agree that for one (1) year from the date of this Certificate, I shall not either directly or indirectly solicit, induce, recruit or encourage any of the Company’s employees or consultants to terminate their relationship with the Company, or attempt to solicit, induce, recruit, encourage or take away employees or consultants of the Company, either for myself or for any other person or entity.

Further, I shall not at any time use any Confidential Information of the Company to negatively influence any of the Company’s clients or customers from purchasing Company products or services or to solicit or influence or attempt to influence any client, customer or other person either directly or indirectly, to direct his or its purchase of products and/or services to any person, firm, corporation, institution or other entity in competition with the business of the Company.

By: [To be signed at termination] Dated:

2

Exhibit A-3

Section 7 of the Defend Trade Secrets Act of 2016

“ ... An individual shall not be held criminally or civilly liable under any Federal or State trade secret law for the disclosure of a trade secret that—(A) is made—(i) in confidence to a Federal, State, or local government official, either directly or indirectly, or to an attorney; and (ii) solely for the purpose of reporting or investigating a suspected violation of law; or (B) is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal.... An individual who files a lawsuit for retaliation by an employer for reporting a suspected violation of law may disclose the trade secret to the attorney of the individual and use the trade secret information in the court proceeding, if the individual—(A) files any document containing the trade secret under seal; and (B) does not disclose the trade secret, except pursuant to court order.”

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Exhibit B

Approved Outside Board Commitments

Entity	Description of Entity	Description of Commitment	Approved Duration
Rhapsody International (dba Napster)	For profit subsidiary of RealNetworks	Transition of existing board role	Through 3/31/20
Scener, Inc.	For profit subsidiary of RealNetworks	Transition of existing board role	Through 3/31/20

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EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-229947, 333-224842, 333-216620 and 333-212620) and Form S-3 (No. 333-234489) of Impinj, Inc. of our report dated March 2, 2020 relating to the financial statements, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP
Seattle, Washington
March 2, 2020

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Chris Diorio, Ph.D., certify that:

1. I have reviewed this Annual Report on Form 10-K of Impinj, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 2, 2020

/s/ Chris Diorio

Chris Diorio, Ph.D.

Chief Executive Officer

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Cary Baker, certify that:

1. I have reviewed this Annual Report on Form 10-K of Impinj, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: March 2, 2020

/s/ Cary Baker

Cary Baker

Chief Financial Officer

(principal financial officer and duly authorized signatory)

EX-32.1

Exhibit 32.1

IMPINJ, INC.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Impinj, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Chris Diorio, Ph.D., Chief Executive Officer (Principal Executive Officer) of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Chris Diorio

Chris Diorio, Ph.D.

Chief Executive Officer

(Principal Executive Officer)

March 2, 2020

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Impinj, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Report), irrespective of any general incorporation language contained in such filing.

EX-32.2

Exhibit 32.2

IMPINJ, INC.

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Impinj, Inc. (the “Company”) on Form 10-K for the year ended December 31, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Eric Brodersen, President and Chief Operating Officer (Principal Financial Officer) of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Cary Baker

Cary Baker

Chief Financial Officer

(principal financial officer and duly authorized signatory)

March 2, 2020

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

This certification accompanies the Report to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of Impinj, Inc. under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Report), irrespective of any general incorporation language contained in such filing.

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Net loss	$ (22,987)	$ (35,231)	$ (17,322)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	4,809	4,534	3,950
Stock-based compensation	18,486	11,317	7,428
Non-cash restructuring benefit		(454)
Accretion of discount or amortization of premium on short-term investments	(506)	(419)	70
Amortization of debt issuance costs and debt discount	206	75	95
Loss on debt extinguishment	576
Deferred income taxes		(395)
Changes in operating assets and liabilities:
Accounts receivable	(5,273)	3,782	(4,822)
Inventory	10,572	2,358	(19,349)
Prepaid expenses and other assets	(524)	473	439
Deferred revenue	(70)	(381)	(196)
Deferred rent		(260)	1,191
Accounts payable	1,046	326	(2,836)
Accrued compensation and employee related benefits	(1,486)	1,819	(1,735)
Operating lease right-of-use assets	2,153
Operating lease liabilities	(3,038)
Accrued liabilities and other liabilities	744	(390)	(2,799)
Restructuring liabilities		1,069
Net cash provided by (used in) operating activities	4,708	(11,777)	(35,886)
Investing activities:
Purchases of investments	(72,413)	(51,651)	(49,125)
Proceeds from maturities of investments	61,743	52,352	77,075
Purchases of property and equipment	(2,429)	(6,367)	(6,552)
Net cash provided by (used in) investing activities	(13,099)	(5,666)	21,398
Financing activities:
Proceeds from issuance of 2019 Notes, net of issuance costs	83,475
Premiums paid for Capped Call Transactions	(10,126)
Principal payments on finance lease obligations	(522)	(900)	(1,147)
Payments on term and equipment loans	(28,192)	(2,451)	(2,772)
Proceeds from term loans, net of debt issuance costs	3,991	16,350
Proceeds from exercise of stock options and employee stock purchase plan	9,133	2,689	4,656
Payments of deferred offering costs			(600)
Net cash provided by financing activities	57,759	15,688	137
Net increase (decrease) in cash and cash equivalents	49,368	(1,755)	(14,351)
Cash and cash equivalents
Beginning of period	17,530	19,285	33,636
End of period	66,898	17,530	19,285
Supplemental disclosure of cash flow information:
Cash paid for interest	1,612	1,179	814
Supplemental disclosure of non-cash financing and investing activities:
Purchases of property and equipment not yet paid	557	513	579
Disposal of fully depreciated property and equipment	$ 1,432	$ 3,105	$ 592

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Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Revenue	$ 152,836	$ 122,633	$ 125,300
Cost of revenue	78,834	64,352	60,359
Gross profit	74,002	58,281	64,941
Operating expenses:
Research and development	38,880	34,168	32,220
Sales and marketing	32,642	32,934	31,579
General and administrative	24,141	22,299	18,161
Restructuring costs		3,749
Total operating expenses	95,663	93,150	81,960
Loss from operations	(21,661)	(34,869)	(17,019)
Other income, net	1,242	808	508
Interest expense	(1,794)	(1,403)	(908)
Loss on debt extinguishment	(576)
Loss before income taxes	(22,789)	(35,464)	(17,419)
Income tax benefit (expense)	(198)	233	97
Net loss	$ (22,987)	$ (35,231)	$ (17,322)
Net loss per share — basic and diluted	$ (1.05)	$ (1.65)	$ (0.84)
Weighted-average shares outstanding — basic and diluted	21,847	21,334	20,680

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Leases - Schedule of Weighted-Average Remaining Lease Terms and Weighted-Average Discount Rate Related to Leases (Details)	Dec. 31, 2019
Weighted-average remaining lease term (years)
Operating leases	6 years 1 month 6 days
Finance leases	8 months 12 days
Weighted-average discount rate
Operating leases	6.80%
Finance leases	10.10%

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Stock-Based Awards - Schedule of Employee Stock Purchase Plan Valuation Assumptions (Details) - Employee Stock Purchase Plan	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate		2.40%
Risk-free interest rates, minimum	1.90%		0.70%
Risk-free interest rates, maximum	2.50%		1.10%
Expected term	6 months	3 months 18 days	6 months
Expected volatility		75.90%
Volatility, minimum	66.50%		66.50%
Volatility, maximum	72.30%		71.20%

XML

Income Taxes - Summary of Components of Income (Loss) before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S.	$ (23,291)	$ (35,933)	$ (17,761)
Foreign	502	469	342
Loss before income taxes	$ (22,789)	$ (35,464)	$ (17,419)

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2019	Dec. 31, 2017	Dec. 31, 2016
Significant Accounting Policies [Line Items]
Inventory excess and obsolescence charges, unfavorable impact on gross margin percentage	1.70%	1.20%
Sales commissions maximum amortization period	1 year
Sales contracts with original expected length	one year or less
Cumulative ownership change percentage	50.00%
Cumulative change in ownership period	3 years
Income tax examination years, description	Due to the presence of NOLs in most jurisdictions, our tax years remain open for examination by taxing authorities back to 2000
Award vesting period	4 years
Operating lease right-of-use assets	$ 16,501		$ 18,700
Operating lease, liability	22,287		$ 25,300
Restructuring liabilities, net	94	$ 1,069
Deferred rent, net	5,600
Cease-Use Costs
Significant Accounting Policies [Line Items]
Restructuring liabilities, net	$ 1,000
Maximum
Significant Accounting Policies [Line Items]
Expected revenue recognition term	1 year
Extended warranty and enhanced maintenance term	3 years
Payment Terms	120 days
Product warranty coverage period	1 year
Lease expiration year	2026
Minimum
Significant Accounting Policies [Line Items]
Extended warranty and enhanced maintenance term	1 year
Payment Terms	30 days
Product warranty coverage period	90 days
Lease expiration year	2020
Allowance for Sales Returns
Significant Accounting Policies [Line Items]
Amount reserved for sales returns	$ 1,072	$ 373		$ 3,495	$ 177
Allowance for Sales Returns | Customer One
Significant Accounting Policies [Line Items]
Amount reserved for sales returns				$ 3,200

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Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
2019 Convertible Senior Notes due 2026
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Debt instrument, maturity year	2026
Fair Value Measurements Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 95,260	$ 50,439
Liabilities measured at fair value	0	0
Fair Value Measurements Recurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0	$ 0

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements include Impinj, Inc. and its wholly owned subsidiaries. Intercompany balances and transactions have been eliminated in consolidation. These consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures as of the date of the financial statements, as well as the reported amounts of revenue and expenses during the periods presented. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, sales incentives, estimated costs to complete development contracts, deferred revenue, inventory excess and obsolescence, income taxes, the determination of the fair value of stock awards and compensation and employee related benefits. To the extent there are material differences between these estimates, judgments, or assumptions and actual results, our financial statements will be affected.

Concentrations of Credit Risk

Concentrations of Credit Risk

Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of cash equivalents, investments and accounts receivable. We place cash and cash equivalents and investments with major financial institutions, which management assesses to be of high credit quality, to limit our investments exposure. We extend credit to customers based upon our evaluation of the customer’s financial condition and generally collateral is not required. The following table presents total revenue and accounts receivable concentration for the periods presented or as of the dates presented:

	Year Ended December 31,
	2019			2018			2017
Revenue:
Avery Dennison		19	%		22	%		18	%
North American Systems customer		14		*			*
Smartrac		12			17			14
Arizon	*				10			13
Blue Star	*			*				10
		45	%		49	%		55	%
* Less than 10%

	As of December 31,
	2019			2018
Accounts Receivable:
Blue Star		18	%		13	%
Avery Dennison		15			14
Smartrac		13			21
Arizon	*				10
		46	%		58	%
* Less than 10%

Concentration of Supplier Risk

Concentration of Supplier Risk

We outsource the manufacturing and production of our hardware products to a small number of suppliers. Although there are a limited number of manufacturers for hardware products, we believe that other suppliers could provide similar products on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect our operating results.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash includes demand deposits with banks or financial institutions. Cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Our cash equivalents include only investments with an original or remaining maturity of three months or less at the date of purchase. We regularly maintain cash in excess of federally insured limits at financial institutions.

Investments

Investments

Our investments consist of fixed income securities, which include U.S. government agency securities, corporate notes and bonds and commercial paper. Because we use the investments to support current operations, the contractual maturities of our available-for-sale securities are due in one year or less and are classified as short-term investments. Available-for-sale securities are carried at fair value with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity, while realized gains and losses and other-than-temporary impairments are reported as a component of net income (loss) based on specific identification. An impairment charge is recorded in the consolidated statements of operations for declines in fair value below the cost of an individual investment that are deemed to be other than temporary. We assess whether a decline in value is temporary based on the length of time that the fair market value has been below cost, the severity of the decline and the intent and ability to hold or sell the investment. The gross unrealized gains or losses on short-term investments as of December 31, 2019 and 2018 were not material. We did not identify any investments as other-than-temporarily impaired as of December 31, 2019 or 2018.

Fair Value Measurement

Fair Value Measurement

Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The standards also establish a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value:

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

• Level 2 — Assets and liabilities valued based on observable market data for similar instruments, such as quoted prices for similar assets or liabilities.

• Level 3 — Unobservable inputs that are supported by little or no market activity; instruments valued based on the best available data, some of which is internally developed, and considers risk premiums that a market participant would require.

We applied the following methods and assumptions in estimating our fair value measurements:

Cash equivalents — Cash equivalents comprise highly liquid investments, including money market funds and certificates of deposit, with an original or remaining maturity of three months or less at the date of purchase. The fair value measurement of these assets is based on quoted market prices in active markets.

Investments — Our investments comprise fixed income securities, which include U.S. government agency securities, corporate notes and bonds, commercial paper and treasury bills. The fair value measurement of these assets is based on observable market-based inputs or inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Long-term debt— The fair values of our senior credit facility included in long-term debt in our consolidated balance sheets approximated carrying value based on the borrowing rates currently available to us for loans with similar terms using Level 2 inputs as of December 31, 2018. See Note 7 for the carrying amount and estimated fair value of our convertible senior notes due in 2026.

Accounts Receivable and Allowances

Accounts Receivable and Allowances

Accounts receivable comprises amounts billed currently due from customers, net of an allowance for doubtful accounts, an allowance for sales returns and price exceptions.

The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in existing accounts receivable and is determined based on our historical collections experience, age of the receivable, knowledge of the customer and the condition of the general economy and industry as a whole. We record changes in our estimate to the allowance for doubtful accounts through bad debt expense and write off the receivable and corresponding allowance when accounts are ultimately determined to be uncollectible. Bad debt expense is included in general and administrative expenses. For the periods presented in this report, bad debt expense was not material.

The allowance for sales returns and price exceptions is our best estimate based on our historical experience and currently available evidence. We record changes in our estimate to the allowance for sales returns and price exceptions through revenue and relieve the allowance when product returns are received for sales returns and when claims are processed for price exceptions. In 2017, we reserved for $3.2 million related to a product exchange that we completed in the first quarter of 2018.The following table summarizes our allowance for sales returns (in thousands):

	Balance at Beginning of Year		Additional Reserve		Applied Sales Return and Price Exceptions			Balance at End of Year
Allowance for sales returns and price exceptions:
During year ended December 31, 2019	$	373	$	2,939	$	(2,240	)	$	1,072
During year ended December 31, 2018		3,495		1,426		(4,548	)		373
During year ended December 31, 2017		177		4,166		(848	)		3,495

Inventory

Inventory

Inventories are stated at the lower of cost or estimated net realizable value using the average costing method, which approximates the first-in, first-out method. Inventories comprise raw materials, work-in-process and finished goods. We continuously assess the value of our inventory and write down its value for estimated excess and obsolete inventory. This evaluation includes an analysis of inventory on hand, current and forecasted demand, product development plans, and market conditions. If future demand or market conditions are less favorable than our projections, or our product development plans change from current expectations, a write-down of excess or obsolete inventory may be required, and would be reflected in cost of goods sold in the period the updated information is known.

We recorded inventory excess and obsolescence charges, which had an unfavorable net impact of 1.7% and 1.2% on our gross margin for 2019 and 2018, respectively. Inventory excess and obsolescence charges were not material for the year ended December 31, 2017.

Property and Equipment

Property and Equipment

We record property and equipment at cost and depreciate it using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows:

Category	Useful Life
Laboratory equipment	3 to 10 years
Computer equipment and software	2 to 5 years
Furniture and fixtures	3 to 7 years
Equipment acquired under finance leases	3 to 7 years
Leasehold improvements	Shorter of remaining lease term or expected useful life

Maintenance and repair costs are charged to expense as incurred. Major improvements, which extend the useful life of the related asset, are capitalized. Upon disposal of a fixed asset, we record a gain or loss based on the differences between the proceeds received and the net book value of the disposed asset.

Goodwill

Goodwill

Goodwill is measured as the excess of the cost of acquisition over the sum of the amounts assigned to identifiable tangible and intangible assets acquired less liabilities assumed. We perform an annual impairment assessment of goodwill at the reporting unit level as of September 30, or more frequently if indicators of potential impairment exist. Our annual impairment assessment requires a comparison of the fair value of our reporting unit to the carrying value. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying value of a reporting unit is greater than its fair value, an impairment loss will be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. Additionally, we will consider the income tax effect from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss.

Revenue Recognition

Revenue Recognition

We generate revenue primarily from sales of hardware products. We also generate revenue from software, extended warranties, enhanced maintenance, support services, and nonrecurring engineering development services, all of which are not material.

We recognize revenue when control of the promised goods or services is transferred to our customers, which for hardware sales is generally at the time of product shipment as determined by the agreed-upon shipping terms. We measure revenue based on the amount of consideration we expect to be entitled-to in exchange for those goods or services. The period between when we transfer control of promised goods or services and when we receive payment is expected to be one year or less, and that expectation is consistent with our historical experience. As such, we do not adjust our revenues for the effects of a significant financing component. We record any variable consideration, which primarily comprises sales incentives, as a reduction of revenue at the time of initial revenue recognition. We estimate sales incentives based on our historical experience and current expectations at the time of revenue recognition and update them at the end of each reporting period as additional information becomes available.

Our reader and gateway products are highly dependent on, and interrelated with, embedded software and cannot function without this embedded software. In these cases, we account for the hardware and software license as a single performance obligation and recognize revenue at the point in time when control is transferred. Additionally, we sell standalone system software that configures, manages and controls readers and gateways and other software that performs other functions. This standalone software is not integrated directly in the functionality of the reader or gateway. Our software licenses, both for embedded and standalone software, provide the customer with a right to use the software as it exists when we make it available to the customer. Based on the software product, customers purchase either perpetual licenses or subscribe to licenses for a specified term, which differ mainly in the duration over which the customer benefits from the software. Consequently, we recognize revenue for standalone software at a point in time when the software is made available to the customer.

Our contracts with customers with multiple performance obligations generally include a combination of hardware products, standalone software, extended warranty and enhanced maintenance and support services. For these contracts, we account for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling-price basis. In instances where the standalone selling price is not directly observable, such as when we do not sell the product or service separately, we determine the standalone selling price using one, or a combination of, the adjusted market assessment or expected cost-plus margin. Amounts allocated to extended warranty and enhanced maintenance sold with our reader and gateway products are deferred and recognized on a straight-line basis over the term of the arrangement, which is typically from one to three years. Amounts allocated to support services sold with our reader and gateway products are deferred and recognized when control of the promised services is transferred to our customers.

For nonrecurring engineering development agreements that involve significant production, modification or customization of our products, we generally recognize revenue over the performance period using the cost-input method because it best depicts the transfer of services to the customer. We receive payments under these agreements based on a billing schedule. Contract assets relate to our conditional right to consideration for our completed performance under these agreements. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract liabilities, or deferred revenue, relate to payments received in advance of performance under the contract. Contract liabilities are recognized as revenue as we perform under the contract. For the periods presented in this report, our contract assets, deferred revenue and the value of unsatisfied performance obligations for nonrecurring engineering development agreements are not material.

Payment terms typically range from 30 to 120 days. We present revenue net of sales tax in our consolidated statements of operations. Shipping charges billed to customers are included in revenue and the related shipping costs are included in cost of revenue.

Practical Expedients and Exemptions: We expense sales commissions when incurred because the amortization period is expected to be one year or less. We record these costs within sales and marketing expenses. We do not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less and (2) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed. 

Product Warranties

Product Warranties

We provide limited warranty coverage for most products, generally ranging from a period of 90 days to one year from the date of shipment. We record a liability for the estimated cost of product warranties based on historical claims, product failure rates and other factors when the related revenue is recognized. We review these estimates periodically and adjust the warranty reserves as actual experience differs from historical estimates or other information becomes available. The warranty liability primarily includes the anticipated cost of materials, labor and shipping necessary to repair or replace the product. Accrued warranty costs in 2019 and 2018 were not material.

Leases

Leases

We determine whether an arrangement is or contains a lease at inception. Right-of-use, or ROU, assets represent our right to use an identified asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of future lease payments over the lease term. We use an incremental borrowing rate in determining the present value of future lease payments as our operating leases do not provide an implicit rate. Our incremental borrowing rate is based on a credit-adjusted risk-free rate, which best approximates a secured rate over a similar term of lease. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Our lease agreements may contain variable costs such as common area maintenance, insurance, real estate taxes or other costs. Variable lease costs are expensed as incurred on the consolidated statements of operations. Our lease agreements generally do not contain any residual value guarantees or restrictive covenants. Finance lease ROU assets are included in property and equipment, net in our consolidated balance sheets.

We have various non-cancellable operating lease agreements for office, warehouse and research and development space in the U.S., China, Thailand and Malaysia, with expiration dates from 2020 to 2026. Certain of these arrangements have free or escalating rent payment provisions and optional renewal and termination clauses that are factored into the classification and measurement of the lease when appropriate. These lease agreements typically include lease and non-lease components and are generally accounted for as a single lease component.

Leases with an initial term of 12 months or less are not recorded on our consolidated balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term.

Research and Development Costs

Research and Development Costs

Research and development expense consists primarily of personnel expenses (salaries, benefits and other employee related costs) and stock-based compensation expense for our product-development personnel; external consulting and service costs; prototype materials; other new product development costs; and an allocated portion of infrastructure costs, which include occupancy, depreciation and software costs.

Foreign Currency

Foreign Currency

Our foreign subsidiaries are considered to be extensions of the U.S. Company. The functional currency of the foreign subsidiaries is the U.S. dollar. Accordingly, gains and losses resulting from remeasuring transactions denominated in currencies other than U.S. dollars are included in other income, net on the consolidated statements of operations.

Income Taxes

Income Taxes

We use the asset and liability approach for accounting, which requires recognizing deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement and tax bases. We measure deferred tax assets and liabilities using enacted tax rates expected to be in effect when such assets and liabilities are recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the year that includes the enactment date. We determine deferred tax assets, including historical net operating losses, and deferred tax liabilities, based on temporary differences between the book and tax bases of assets and liabilities. We believe that it is currently more likely than not that our deferred tax assets will not be realized and as such, we have recorded a full valuation allowance for these assets. We evaluate the likelihood of our ability to realize deferred tax assets in future periods on a quarterly basis, and when appropriate evidence indicates we would revise our valuation allowance accordingly.

We utilize a two-step approach for evaluating uncertain tax positions. First, we evaluate recognition, which requires us to determine if the weight of available evidence indicates that a tax position is more likely than not to be sustained upon audit, including resolution of related appeals or litigation processes. If a tax position is not considered more likely than not to be sustained, no benefits of the position are recognized. Second, we measure the uncertain tax position based on the largest amount of benefit which is more likely than not to be realized on effective settlement. This process involves estimating our actual current tax exposure, including assessing the risks associated with tax audits, together with assessing temporary differences resulting from the different treatment of items for tax and financial reporting purposes. If actual results differ from our estimates, our net operating loss and credit carryforwards could be materially impacted.

Our realization of the benefits of the NOLs and credit carryforwards depends on sufficient taxable income in future years. We have established a valuation allowance against the carrying value of our deferred tax assets, as it is currently more likely than not that we will not be able to realize these deferred tax assets. In addition, using NOLs and credits to offset future income subject to taxes may be subject to substantial annual limitations due to the “change in ownership” provisions of the Code and similar state provisions. Events that cause limitations in the amount of NOLs that we may use in any one year include, but are not limited to, a cumulative ownership change of more than 50%, as defined by Code Sections 382 and 383, over a three-year period. Utilizing our NOLs and tax credit carryforwards could be significantly reduced if a cumulative ownership change of more than 50% has occurred in our past or occurs in our future.

We do not anticipate that the amount of our existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Due to the presence of NOLs in most jurisdictions, our tax years remain open for examination by taxing authorities back to 2000.

Stock-Based Compensation

Stock-Based Compensation

We have equity incentive plans that are more fully described in “Note 9 Stock-Based Awards”.

We measure stock-based compensation costs for all share-based awards at fair value on the grant date and recognize compensation expense on a straight-line basis over the requisite service period, which typically vest over four years. We account for forfeitures as they occur. We determine the fair value of RSUs based on the closing price of our common stock at the date of grant. We determine the fair value of stock options at the date of grant by using the Black-Scholes option-pricing model. We also use the Black-Scholes option-pricing model to determine the fair value of each common share issued under the ESPP. We determine the fair value of the ESPP grants on the first day of each offering period.

In 2019, we began granting RSUs with performance conditions, or PSUs, replacing what has historically been our annual cash-bonus program for our senior executives and other bonus-eligible employees. The number of PSUs that ultimately vest will depend on the extent to which we achieve specified fiscal year financial performance metrics. We record compensation expense each period on a straight-line basis based on our estimate of the most probable number of PSUs that will vest and recognize that expense over the requisite service period.

Net Loss per Share

Net Loss per Share

Net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding. We have outstanding stock options, restricted stock units and ESPPs and unvested common stock subject to repurchase which we include in the calculation of diluted net loss per share if their effect would be dilutive. The diluted net loss per share is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period.

We use the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net loss per share, if applicable since we expect to settle the principal amount of the outstanding 2019 Notes in cash. For more information about the 2019 Notes, please refer to Note 7 to our consolidated financial statements.

Recently Adopted Accounting Standards

Recently Adopted Accounting Standards

In February 2016, the Financial Accounting Standards Board, or FASB, issued guidance on leases. This standard requires recognizing a right-of-use asset and lease liability on the balance sheet for all leases. It also requires more detailed disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. This standard is effective for interim and annual reporting periods beginning after December 15, 2018. We adopted this standard on January 1, 2019 using the effective-date modified retrospective transition method and elected the available practical expedients permitted under the transition method, allowing us to carryforward our historical assessments of (1) whether contracts are or contain leases, (2) lease classification, and (3) initial direct costs. Upon adopting this standard, we recorded net operating lease ROU assets and lease liabilities of $18.7 million and $25.3 million, respectively, as of January 1, 2019. Net restructuring liabilities of $1.0 million related to cease-use costs and net deferred rent of $5.6 million were netted against the operating lease ROU assets upon adoption of this guidance. Our accounting for finance leases remained substantially unchanged. Our consolidated financial statements for the year ended and as of December 31, 2019 are presented under the new standard, while comparative prior periods presented are not adjusted and continue to be reported in accordance with our historical accounting policy. The adoption of this guidance did not impact our results of operations.

In June 2018, the FASB issued guidance to improve nonemployee share-based payment accounting that requires companies to account for share-based payments granted to nonemployees similar to share-based payments granted to employees. This guidance is effective for fiscal years beginning after December 15, 2018, including the interim periods within those fiscal years. We adopted this standard on January 1, 2019 and the adoption of this guidance did not impact our financial positions, results of operations or cash flows.

In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This guidance is effective for fiscal years beginning after December 15, 2019, including the interim periods within those fiscal years. Early adoption of this guidance is permitted. We early adopted this guidance prospectively on January 1, 2019 and the adoption of this guidance did not impact our financial positions, results of operations or cash flows.

In December 2019, the FASB issued guidance to improve areas of GAAP by removing certain exceptions permitted by Topic 740 - Income Taxes and clarifying existing guidance to facilitate consistent application. Early adoption of the new standard is permitted. We early adopted this guidance prospectively on January 1, 2019. Since we have incurred net losses since our inception and maintained a full valuation allowance on our net deferred tax assets, the adoption did not have a material impact on our financial positions, results of operations and cash flows, or financial statement disclosures.

Recently Issued Accounting Standards Not Yet Adopted

Recently Issued Accounting Standards Not Yet Adopted

In June 2016, the FASB issued guidance on measuring credit losses on financial instruments. This guidance requires measuring and recognizing expected credit losses for financial assets held at amortized cost. This guidance is effective for interim and annual reporting periods beginning after December 15, 2019, and early adoption is permitted. We will adopt this guidance on January 1, 2020. The adoption of this guidance requires a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. While we continue to assess all potential impacts of this new standard, we do not expect the adoption of this guidance to have a material impact on our financial position, results of operations or cash flows.

Other recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force), the American Institute of Certified Public Accountants, and the Securities and Exchange Commission did not have, or are not expected to have, a material impact on our present or future consolidated financial statements.

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Deferred Revenue

12 Months Ended

Dec. 31, 2019

Deferred Revenue Disclosure [Abstract]

Deferred Revenue

Note 13. Deferred Revenue

Deferred revenue, comprising individually immaterial amounts for extended warranty, enhanced maintenance and advanced payments on nonrecurring engineering services contracts, represents contracted revenue that has not yet been recognized.

The following table presents the changes in deferred revenue for the periods presented (in thousands):

	Year Ended December 31,
	2019			2018
Balance at beginning of period	$	834		$	1,215
Deferral of revenue		718			587
Recognition of deferred revenue		(788	)		(968	)
Balance at end of period	$	764		$	834

During 2019, we recognized as revenue a total of $0.6million related to amounts that were recorded in deferred revenue as of December 31, 2018. During 2018, we recognized as revenue a total of $0.9 million related to amounts that were recorded in deferred revenue as of December 31, 2017.

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Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property Plant And Equipment [Abstract]

Schedule of Property and Equipment

The following table presents the detail of property and equipment as of the dates presented (in thousands):

	December 31, 2019			December 31, 2018
Laboratory equipment	$	15,326		$	14,505
Computer equipment and software		4,927			4,626
Furniture and fixtures		1,138			1,138
Equipment acquired under finance leases		3,461			3,972
Leasehold improvements		10,554			10,551
Total property and equipment, gross		35,406			34,792
Less: Accumulated depreciation		(17,964	)		(15,014	)
Total property and equipment, net	$	17,442		$	19,778

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Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Reconciliation of the Numerator and Denominator used in Computing Basic and Diluted Net Loss Per Share

For the periods presented, the following table provides a reconciliation of the numerator and denominator used in computing basic and diluted net loss per share (in thousands, expect per share amounts):

	Year Ended December 31,
	2019			2018			2017
Numerator:
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)
Denominator:
Weighted-average shares outstanding — basic and diluted		21,847			21,334			20,680
Net loss per share — basic and diluted	$	(1.05	)	$	(1.65	)	$	(0.84	)

Computation of Diluted Net Loss Per Share Effect in Antidilutive

The following outstanding options and restricted stock units and unvested shares excluded from the computation of diluted net loss per share for the periods presented because their effect would have been antidilutive (in thousands):

	Year Ended December 31,
	2019		2018		2017
Stock options and restricted stock units		3,908		3,284		2,911
Unvested shares of common stock subject to repurchase		3		20		48

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Summary of Components of Income (Loss) before Income Taxes

The following table presents U.S. and foreign components of income (loss) before incomes taxes:

	Year Ended December 31,
	2019			2018			2017
U.S.	$	(23,291	)	$	(35,933	)	$	(17,761	)
Foreign		502			469			342
Loss before income taxes	$	(22,789	)	$	(35,464	)	$	(17,419	)

Summary of Income Tax Expense

The following table presents the detail of income tax benefit (expense) for the periods presented (in thousands):

		Year Ended December 31,
		2019			2018			2017
Current:
U.S. - Federal	$	—			$	—		$	—
U.S. - State			(36	)		(23	)		(8	)
Foreign			(150	)		(140	)		(126	)
			(186	)		(163	)		(134	)
Deferred:
U.S. - Federal			(11	)		404			241
U.S. - State			(1	)		(8	)		(10	)
Foreign			—			—			—
			(12	)		396			231
Total income tax benefit (expense)		$	(198	)	$	233		$	97

Reconciliation of U.S. Federal Statutory Income Tax Rate to Effective Income Tax Rate

The following table presents a reconciliation of the federal statutory rate and our effective tax rate for the periods presented:

	Year Ended December 31,
	2019			2018			2017
U.S. Statutory Rate		21.0	%		21.0	%		34.0	%
Change in valuation allowance		(22.9	)		(20.6	)		56.4
State taxes (net of federal benefit)		(0.4	)		0.5			1.9
Federal research and development credit		5.9			4.1			7.1
Incentive stock options		(1.9	)		(2.9	)		12.5
Unrecognized tax benefits		(1.2	)		(1.0	)		(3.5	)
Impact of Tax Cuts and Jobs Act of 2017		—			—			(113.5	)
Return to provision - deductible transaction costs		—			—			5.6
Other, net		(1.4	)		(0.4	)		0.1
Effective income tax rate		(0.9	%)		0.7	%		0.6	%

Summary of Significant Components Deferred Tax Assets and Liabilities

Deferred federal, state and foreign income taxes reflect the net tax impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and such amounts for tax purposes. The following table presents the significant components of our deferred tax assets and liabilities as of the dates presented (in thousands):

	December 31, 2019			December 31, 2018
Net operating loss carryforwards	$	38,391		$	34,279
Credit carryforwards		9,083			8,071
Capitalized research and development		2,235			2,969
Deferred rent		—			1,021
Operating lease liabilities		4,830			—
Allowances		1,694			1,309
Deferred compensation		176			230
Deferred revenue		46			40
Stock-based compensation		2,846			1,340
Other		156			108
Deferred tax assets		59,457			49,367
Less: Valuation allowance		(46,602	)		(48,481	)
Net deferred tax assets		12,855			886
Deferred tax liability:
Goodwill		(645	)		(590	)
Depreciation and amortization		(1,716	)		(433	)
Operating lease ROU assets		(3,576	)		—
2019 Notes		(7,066	)		—
Deferred tax liabilities		(13,003	)		(1,023	)
Net deferred tax liability	$	(148	)	$	(137	)

Total Balance of Unrecognized Tax Benefits

The following table presents the total balance of unrecognized tax benefits as of the dates presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Balance at beginning of period	$	3,159	$	2,906	$	2,597
Gross increase to tax positions in prior periods		—		—		2
Gross increase to tax positions in current periods		269		253		307
Balance at end of period	$	3,428	$	3,159	$	2,906

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Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Components of Lease Expense

The following table presents the components of lease expense in our consolidated statements of operations for the periods presented (in thousands):

	Year Ended
	December 31, 2019
Operating lease costs(a)
Single lease costs	$	4,170
Variable lease costs		1,623
Sublease income(b)		(1,796	)
Total operating lease costs	$	3,997
Finance lease costs:
Amortization of right-of-use assets		433
Interest on lease liabilities		51
Total finance lease costs		484
(a) Includes short-term lease costs, which are immaterial.
(b) Sublease income is related to unused office space that was sublet as part of the restructuring in fiscal 2018 where we continue to be the primary obligor for the lease.

Supplemental Cash Flow Information Related to Leases

The following table presents supplemental cash flow information related to leases for the periods presented (in thousands):

	Year Ended
	December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used in operating leases	$	4,617
Operating cash flows used in finance leases		51
Financing cash flows used in finance leases		522

Schedule of Weighted-Average Remaining Lease Terms and Weighted-Average Discount Rate Related to Leases

The following table presents weighted-average remaining lease term and weighted-average discount rate related to leases as of:

	December 31, 2019
Weighted-average remaining lease term (years)
Operating leases		6.1
Finance leases		0.7
Weighted-average discount rate
Operating leases		6.8	%
Finance leases		10.1	%

Schedule of Future Lease Payments under Operating Leases

The following table presents future lease payments under operating and finance leases as of December 31, 2019 (in thousands):

	Operating Leases								Finance Leases
	Lease Payments			Sublease Income			Net		Lease Payments
2020	$	4,755		$	(1,373	)	$	3,382	$	269
2021		4,790			(1,414	)		3,376		1
2022		4,650			(1,457	)		3,193		—
2023		3,263			(123	)		3,140		—
2024		3,219			—			3,219		—
Thereafter		6,728			—			6,728		—
Total lease payments	$	27,405		$	(4,367	)	$	23,038	$	270
Less: Imputed interest		(5,118	)							(11	)
Present value of lease liabilities		22,287								259
Less: Current portion of lease liabilities		(3,380	)							(258	)
Lease liabilities, net of current portion	$	18,907							$	1

Schedule of Future Minimum Lease Payments under Operating and Capital Leases

The following table presents future minimum lease payments under operating and capital leases in accordance with Topic 840 as of December 31, 2018 (in thousands):

	Operating Leases		Capital Leases
2019	$	3,573	$	575
2020		3,340		270
2021		3,305		—
2022		3,193		—
2023		3,140		—
Thereafter		9,947		—
Total minimum lease payments	$	26,498	$	845
Less: Imputed interest				(64	)
Present value of capital lease obligations				781
Less: Current portion of capital lease obligations				(523	)
Capital lease obligations net of current portion			$	258

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Stock-Based Awards

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Awards

Note 9. Stock-Based Awards

2016 Equity Incentive Plan

In June 2016, our board of directors adopted and our stockholders approved the 2016 Equity Incentive Plan, or the 2016 Plan, which became effective in July 2016 at which time the 2010 Equity Incentive Plan, or the 2010 Plan, was terminated. Our 2000 Stock Plan was terminated in March 2010. The number of shares of common stock reserved for issuance under the 2016 Plan may increase on January 1 of each year, beginning on January 1, 2017 and ending on and including January 1, 2026, by the lower of (1) 1,825,000 shares; (2) 5% of the total number of shares of common stock outstanding on December 31 of the preceding calendar year; and (3) a lesser number of shares determined by our board of directors. The 2016 Plan provides for the grant of incentive or non-qualified stock options, restricted stock, restricted stock units, stock appreciation rights and performance shares or performance units to employees, non-employee directors, and consultants.

All options granted under the 2000 Stock Plan, the 2010 Plan and the 2016 Plan have a maximum 10-year term and generally vest and become exercisable over four years of continued employment or service as defined in each option agreement. We generally grant stock options with exercise prices that equal the fair value of the common stock on the date of grant. As allowed under the 2016 Plan, there are a few exceptions to this vesting schedule, which provide for vesting at different rates or based on achievement of performance targets. We utilize newly issued shares to satisfy option exercises.

Stock Options

On April 18, 2018, we commenced a voluntary stock option exchange program, designed to provide eligible employees an opportunity to exchange certain outstanding underwater stock options for a lesser amount of new options to be granted with lower exercise prices. Stock options eligible for exchange were those with an exercise price per share equal to or greater than $21.72, whether vested or unvested. All employees (including executive officers but excluding the chief executive officer) who held options and remain employed through the date of grant for new options were eligible to participate in the offer. Members of the board of directors were not eligible to participate. The option exchange program expired on May 16, 2018. Options for an aggregate of approximately 1.0 million shares were tendered by employees, representing 73% of the total shares underlying stock options eligible for exchange.

On May 16, 2018, we granted options for an aggregate of 0.7 million shares in exchange for the eligible options surrendered. The new options were granted under, and subject to, the terms and conditions of the 2016 Plan. The exercise price of the new stock options is $17.33, which was the closing price of our common stock on May 16, 2018. No incremental stock option expense was recognized for the exchange, because the fair value of the surrendered options, as determined based on the Black-Scholes option-pricing model, was equal to or greater than the fair value of the new stock options issued in the exchange.

The following table summarizes option award activity for the year ended December 31, 2019 (in thousands, except per share data and years):

	Number of Shares			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life (Years)		Total Intrinsic Value
Outstanding at December 31, 2018		3,603		$	17.67		8.43	$	7,898
Granted		571			31.09
Exercised		(508	)		12.35
Forfeited or expired		(404	)		18.87
Outstanding at December 31, 2019		3,262			20.70		7.98		22,033
Vested and exercisable at December 31, 2019		1,416		$	16.39		7.00	$	14,345

We estimate the fair value of options granted at the date of grant using the Black-Scholes option-pricing model with the following assumptions for the periods presented:

	Year Ended December 31,
	2019		2018		2017
Risk-free interest rate	1.4% – 2.6%		2.3% – 3.1%		1.8% – 2.2%
Expected dividends yield	None		None		None
Expected volatility	60.8% - 64.3%		57.7% - 66.1%		52.2% – 59.1%
Weighted-average expected term	6.08		6.04		6.08
Weighted-average fair value of options granted	$	18.31	$	11.85	$	19.15

We determined that it was not practicable to calculate the volatility of our share price since we do not have an extensive public trading history for shares of our common stock. Therefore, we estimated our volatility based on a combination of our historical volatility since becoming a publicly traded company and reported market value data for a group of publicly-traded entities that we believe are relatively comparable after consideration of their size, stage of lifecycle, profitability, growth and risk and return on investment.

To determine the expected term, we generally apply and have historically applied the simplified approach in which the expected term of an award is presumed to be the mid-point between the vesting date and the expiration date of the options as we do not have sufficient historical exercise data to provide a reasonable basis for an estimate of expected term.

The total intrinsic value of options exercised during 2019, 2018 and 2017 was $10.0 million, $4.3 million and $14.9 million, respectively.The total grant date fair value of options vested was $14.8 million, $6.0 million and $3.1 million during 2019, 2018 and 2017, respectively.

As of December 31, 2019, our total unrecognized stock-based compensation cost related to unvested stock options was $26.2 million, which we will recognize over the weighted-average remaining requisite service period of 2.6 years.

Restricted Stock Units

The following table summarizes activity for restricted stock units, RSUs, including RSUs with performance conditions, or PSUs, for the year ended December 31, 2019 (in thousands, except per share data):

	Number of Shares						Weighted-Average Grant Date Fair Value
	RSUs			PSUs			RSUs		PSUs
Outstanding at December 31, 2018		32			—		$	20.21	$	—
Granted		533			267			33.60		17.84
Vested		(44	)		—			21.52		—
Forfeited		(12	)		(15	)		34.58		17.03
Outstanding at December 31, 2019		509			252		$	33.77	$	17.88

PSUs granted during the year ended December 31, 2019 were primarily related to a PSU bonus program that replaces what has historically been our annual cash-bonus program for our senior executives and other bonus-eligible employees. The number of PSUs that ultimately vest depend on attainment of a financial metric for the fiscal year and continued employment through the vest date. Based upon attainment of the financial metric we expect approximately 239,000 shares to vest in the first quarter of 2020.

We record compensation expense for each period based on our estimate of the most probable number of PSUs that will vest, and we recognize the expense over the related service period. The stock-based compensation expense we recognized for the PSUs was $3.4 million for the year ended December 31, 2019

The total fair value of RSUs vested was $1.5 million during both 2019 and 2018 and not material during 2017.

The fair value of the outstanding restricted stock units will be recorded as stock-based compensation expense over the vesting period. As of December 31, 2019, there was $15.3 million of total unrecognized compensation cost related to unvested restricted stock units, which is expected to be recognized over a weighted average period of 3.4 years. As of December 31, 2019, there was $0.9 million of total unrecognized compensation cost related to PSUs, which is expected to be recognized in less than one year.

Employee Stock Purchase Plan

In 2016, we adopted the 2016 Employee Stock Purchase Plan, or the ESPP, which became effective in July 2016. Under the ESPP, eligible employees can authorize payroll deductions for amounts up to 15% of their eligible compensation. A participant may purchase a maximum of 4,000 shares each six-month period or some lesser number of shares as determined by the IRS rules. The offering periods generally start on the first trading day on or after February 20 and August 20 of each year. Participants in an offering period will be granted the right to purchase common shares at a price per share that is 85% of the least of the fair market value of the shares at (1) the first day of the offering period and (2) the end of each purchase period within the offering period. The number of shares reserved for the ESPP may increase each year, beginning on January 1, 2017 and continuing through and including January 1, 2036, by the least of: (1) 1% of the total number of shares of common stock outstanding on the first day of such year; (2) 365,411 shares of common stock; and (3) such amount as determined by our board of directors.

As of December 31, 2019, the total unrecognized stock-based compensation related to the ESPP was $0.2 million and will be recognized on a straight-line basis over the weighted-average remaining service period of less than one year.

We estimate the fair value of the ESPP granted at the start of the offering period using the Black-Scholes option-pricing model with the following assumptions for the periods presented:

	Year Ended December 31,
	2019	2018	2017
Risk-free interest rate	1.9% – 2.5%	2.4%	0.7% – 1.1%
Expected term	0.5 years	0.3 years	0.5 years
Expected volatility	66.5% – 72.3%	75.9%	66.5% – 71.2%

Stock-Based Compensation Expense

The following table presents the detail of stock-based compensation expense amounts included in our consolidated statements of operations for the periods indicated (in thousands):

	Year Ended December 31,
	2019		2018		2017
Cost of revenue	$	772	$	469	$	231
Research and development expense		6,427		3,663		2,431
Sales and marketing expense		6,003		4,166		3,113
General and administrative expense		5,284		3,019		1,653
Total stock-based compensation expense	$	18,486	$	11,317	$	7,428

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Property and Equipment

12 Months Ended

Dec. 31, 2019

Property Plant And Equipment [Abstract]

Property and Equipment

Note 5. Property and Equipment

The following table presents the detail of property and equipment as of the dates presented (in thousands):

	December 31, 2019			December 31, 2018
Laboratory equipment	$	15,326		$	14,505
Computer equipment and software		4,927			4,626
Furniture and fixtures		1,138			1,138
Equipment acquired under finance leases		3,461			3,972
Leasehold improvements		10,554			10,551
Total property and equipment, gross		35,406			34,792
Less: Accumulated depreciation		(17,964	)		(15,014	)
Total property and equipment, net	$	17,442		$	19,778

Depreciation expense, which includes amortization of finance lease ROU assets, was $4.8 million, $4.5 million and $4.0 million for the years ended December 31, 2019, 2018 and 2017, respectively. The net book value of property and equipment acquired under finance leases was $0.7 million and $1.1 million at December 31, 2019 and 2018, respectively.

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Restructuring - Summary of Restructuring Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Restructuring Cost And Reserve [Line Items]
Balance at December 31, 2018	$ 1,069
Balance at December 31, 2019	94
Accounting Standards Update 2016-02
Restructuring Cost And Reserve [Line Items]
Effect of the new lease standard adoption	(975)
Employee Termination Benefits
Restructuring Cost And Reserve [Line Items]
Balance at December 31, 2018	94
Balance at December 31, 2019	94
Employee Termination Benefits | Accounting Standards Update 2016-02
Restructuring Cost And Reserve [Line Items]
Effect of the new lease standard adoption	0
Cease-Use Costs
Restructuring Cost And Reserve [Line Items]
Balance at December 31, 2018	975
Balance at December 31, 2019	0
Cease-Use Costs | Accounting Standards Update 2016-02
Restructuring Cost And Reserve [Line Items]
Effect of the new lease standard adoption	$ (975)

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Segment Reporting - Summary of Sales by Product (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue:
Total revenue	$ 152,836	$ 122,633	$ 125,300
Endpoint ICs
Revenue:
Total revenue	97,657	84,974	91,699
Systems
Revenue:
Total revenue	$ 55,179	$ 37,659	$ 33,601

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Long-term Debt - Summary of Outstanding Principal Amount And Carrying Value (Details) - 2019 Convertible Senior Notes due 2026 $ in Thousands	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Outstanding principal amount	$ 86,250
Unamortized debt discount and debt issuance costs	(35,374)
Carrying value	$ 50,876

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Income Taxes - Summary of Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 38,391	$ 34,279
Credit carryforwards	9,083	8,071
Capitalized research and development	2,235	2,969
Deferred rent		1,021
Operating lease liabilities	4,830
Allowances	1,694	1,309
Deferred compensation	176	230
Deferred revenue	46	40
Stock-based compensation	2,846	1,340
Other	156	108
Deferred tax assets	59,457	49,367
Less: Valuation allowance	(46,602)	(48,481)
Net deferred tax assets	12,855	886
Deferred tax liability:
Goodwill	(645)	(590)
Depreciation and amortization	(1,716)	(433)
Operating lease ROU assets	(3,576)
2019 Notes	(7,066)
Deferred tax liabilities	(13,003)	(1,023)
Net deferred tax liability	$ (148)	$ (137)

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Stock-Based Awards - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended	6 Months Ended	12 Months Ended
	May 16, 2018	Jul. 31, 2016	Mar. 31, 2020	Dec. 31, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options granted, exercisable term					4 years
Exercise price of stock option	$ 17.33				$ 31.09
Number of stock options granted in exchange for options eligible for exchange	700,000				571,000
Stock based compensation expense					$ 18,486	$ 11,317	$ 7,428
Stock Option Exchange Program
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option exchange program commencement date	Apr. 18, 2018
Option exchange program expiration date	May 16, 2018
Eligible stock options tendered by employees	1,000,000
Percentage of eligible stock options tendered by employees	73.00%
Stock Option Exchange Program | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Exercise price of stock option	$ 21.72
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total intrinsic value of options exercised					10,000	4,300	14,900
Total grant date fair value of options vested					14,800	6,000	$ 3,100
Unrecognized stock-based compensation cost					$ 26,200
Unrecognized stock-based compensation cost, period for recognition					2 years 7 months 6 days
Performance Share Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock based compensation expense					$ 3,400
Unrecognized stock-based compensation cost					$ 900
Performance Share Units | Forecast
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares expected to vest upon achievement of financial metric			239,000
Performance Share Units | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation cost, period for recognition					1 year
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation cost					$ 15,300
Unrecognized stock-based compensation cost, period for recognition					3 years 4 months 24 days
Total fair value of RSUs vested					$ 1,500	$ 1,500
2016 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Incentive plan effective date					Jul. 31, 2016
Shares of common stock reserved for future issuance, description					The number of shares of common stock reserved for issuance under the 2016 Plan may increase on January 1 of each year, beginning on January 1, 2017 and ending on and including January 1, 2026, by the lower of (1) 1,825,000 shares; (2) 5% of the total number of shares of common stock outstanding on December 31 of the preceding calendar year; and (3) a lesser number of shares determined by our board of directors.
Options granted, maximum term					10 years
Options granted, exercisable term					4 years
2016 Equity Incentive Plan | Lower of Potential Outcome One
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock capital incremental shares reserved for future issuance each year					1,825,000
2016 Equity Incentive Plan | Lower of Potential Outcome Two
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of total number of shares of common stock outstanding					5.00%
2016 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock capital incremental shares reserved for future issuance each year					365,411
Percentage of total number of shares of common stock outstanding								1.00%
Unrecognized stock-based compensation cost					$ 200
Percentage of salary contribution by employees		15.00%
Maximum number of shares purchase per employee				4,000
Percentage of price lesser than fair market value per share		85.00%
2016 Employee Stock Purchase Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized stock-based compensation cost, period for recognition					1 year

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Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Summary of Outstanding Principal Amount And Carrying Value

The following table presents the outstanding principal amount and carrying value of the 2019 Notes as of the date presented (in thousands):

	December 31, 2019
Outstanding principal amount		86,250
Unamortized debt discount and debt issuance costs		(35,374	)
Carrying value		50,876

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Restructuring (Tables)

12 Months Ended

Dec. 31, 2019

Restructuring And Related Activities [Abstract]

Summary of Restructuring Activity

The following table summarizes the activity associated with the restructuring (in thousands):

	Employee Termination Benefits		Cease-Use Costs			Total
Balance at December 31, 2018	$	94	$	975		$	1,069
Effect of the new lease standard adoption(1)		—		(975	)		(975	)
Balance at December 31, 2019	$	94	$	—		$	94
(1) Upon adoption of the new lease standard on January 1, 2019, restructuring liabilities related to cease-use costs were netted against the operating lease right-of-use assets.

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Summary of Significant Accounting Policies - Schedule of Revenue and Accounts Receivable Concentration (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Customer Concentration Risk | Revenue
Concentration Risk [Line Items]
Concentration risk percentage	45.00%	49.00%	55.00%
Customer Concentration Risk | Revenue | Avery Dennison
Concentration Risk [Line Items]
Concentration risk percentage	19.00%	22.00%	18.00%
Customer Concentration Risk | Revenue | North American Systems Customer
Concentration Risk [Line Items]
Concentration risk percentage	14.00%
Customer Concentration Risk | Revenue | Smartrac
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	17.00%	14.00%
Customer Concentration Risk | Revenue | Arizon
Concentration Risk [Line Items]
Concentration risk percentage		10.00%	13.00%
Customer Concentration Risk | Revenue | Blue Star
Concentration Risk [Line Items]
Concentration risk percentage			10.00%
Credit Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk percentage	46.00%	58.00%
Credit Concentration Risk | Accounts Receivable | Avery Dennison
Concentration Risk [Line Items]
Concentration risk percentage	15.00%	14.00%
Credit Concentration Risk | Accounts Receivable | Smartrac
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	21.00%
Credit Concentration Risk | Accounts Receivable | Arizon
Concentration Risk [Line Items]
Concentration risk percentage		10.00%
Credit Concentration Risk | Accounts Receivable | Blue Star
Concentration Risk [Line Items]
Concentration risk percentage	18.00%	13.00%

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Stockholders' Equity

12 Months Ended

Dec. 31, 2019

Statement Of Stockholders Equity [Abstract]

Stockholders' Equity

Note 8. Stockholders’ Equity

Preferred Stock

Our board of directors has the authority to fix the designations, powers, preferences and rights, and the qualifications, limitations or restrictions thereof, of any wholly unissued series of preferred stock, and to increase or decrease the number of shares in any series of preferred stock, subject to limitations prescribed by law or by our certificate of incorporation. There was no preferred stock issued and outstanding as of December 31, 2019 or 2018.

Common Stock

As of December 31, 2019, we had authorized 495,000,000 shares of voting $0.001 par value common stock. Each holder of the common stock is entitled to one vote per common share. At its discretion, the board of directors may declare dividends on shares of common stock, subject to the prior rights of our preferred stockholders. Upon liquidation or dissolution, holders of common stock will receive distributions only after preferred stock preferences have been satisfied.

The following shares of common stock have been reserved for future issuance as of the date presented (in thousands):

	December 31, 2019
Option awards outstanding		3,262
Restricted stock units outstanding		761
Common stock reserved under equity incentive plans		1,246
Common stock reserved under employee stock purchase plan		490
Total		5,759

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Inventory

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Inventory

Note 4. Inventory

The following table presents the detail of inventories as of the dates presented (in thousands):

	December 31, 2019		December 31, 2018
Raw materials	$	5,579	$	3,858
Work-in-process		7,485		13,671
Finished goods		21,089		27,196
Total inventory	$	34,153	$	44,725

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Deferred Revenue - Summary of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Deferred Revenue Disclosure [Abstract]
Balance at beginning of period	$ 834	$ 1,215
Deferral of revenue	718	587
Recognition of deferred revenue	(788)	(968)
Balance at end of period	$ 764	$ 834

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Segment Reporting - Summary of Sales by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenue	$ 152,836	$ 122,633	$ 125,300
Americas
Segment Reporting Information [Line Items]
Total revenue	53,260	30,636	29,656
Asia Pacific
Segment Reporting Information [Line Items]
Total revenue	89,012	79,290	80,531
Europe, Middle East and Africa
Segment Reporting Information [Line Items]
Total revenue	$ 10,564	$ 12,707	$ 15,113

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Stockholders' Equity - Summary of Shares of Common Stock Reserved for Future Issuance (Details) shares in Thousands	Dec. 31, 2019 shares
Class Of Stock [Line Items]
Total shares of common stock reserved for future issuance	5,759
Stock Options
Class Of Stock [Line Items]
Total shares of common stock reserved for future issuance	3,262
Restricted Stock Units
Class Of Stock [Line Items]
Total shares of common stock reserved for future issuance	761
Equity Incentive Plans
Class Of Stock [Line Items]
Total shares of common stock reserved for future issuance	1,246
Employee Stock Purchase Plan
Class Of Stock [Line Items]
Total shares of common stock reserved for future issuance	490

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Long-term Debt - Convertible Senior Notes - Additional Information (Details) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	Dec. 11, 2019 $ / shares	Dec. 31, 2019 USD ($) d $ / shares shares	Dec. 31, 2019 USD ($) $ / shares
Debt Instrument [Line Items]
Net proceeds from issuing notes			$ 83,475
Debt instrument, threshold trading days | d		5
Number of business day | d		5
Adjustments recorded in additional paid-in capital			32,743
Payment for capped call transactions		$ 10,100	10,126
2019 Convertible Senior Notes due 2026
Debt Instrument [Line Items]
Aggregate principal amount		$ 86,300	$ 86,300
Debt instrument, Interest rate		2.00%	2.00%
Debt instrument, maturity date		Dec. 15, 2026
Debt Instrument, frequency of periodic payment			The 2019 Notes bear interest at a fixed rate of 2.00% per year, payable semi-annually in arrears on June 15 and December 15 of each year, beginning on June 15, 2020.
Net proceeds from issuing notes		$ 83,500
Debt instrument convertible common stock conversion shares per 1000 principal amount of notes | shares		28.9415
Debt instrument, initial conversion ratio		0.0289415
Debt instrument, initial conversion price | $ / shares		$ 34.55	$ 34.55
Debt instrument, threshold consecutive trading days | d		30
Debt instrument, threshold percentage of stock price trigger		130.00%
Debt instrument, terms of conversion feature			On or after September 15, 2026, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of the 2019 Notes, in multiples of $1,000 principal amount, at the option of the holder regardless of the foregoing circumstances.
Percentage of repurchase price of principal amount		100.00%
Debt instrument, borrowing interest rate percentage		9.90%	9.90%
Fair value of liability component upon issuance		$ 52,500	$ 52,500
Initial carrying amount of liability component recognized as debt discount		33,800	33,800
Proceeds from convertible debt		86,300
Adjustments recorded in additional paid-in capital		33,800
Total issuance cost allocated between liability and equity		2,800
Liability issuance costs		1,700
Equity issuance costs		$ 1,100
Effective interest rate on the liability component		10.21%
Cap price of the capped call transactions | $ / shares		$ 54.20
Premium percentage on sale price of common stock	100.00%
Common stock sale price per share last reported | $ / shares	$ 27.10
Capped call transactions expiration consecutive days | d		40
Capped call transaction expiring date	Dec. 11, 2026
2019 Convertible Senior Notes due 2026 | Level 2
Debt Instrument [Line Items]
Estimated fair value		$ 87,000	$ 87,000
2019 Convertible Senior Notes due 2026 | Minimum
Debt Instrument [Line Items]
Debt instrument, threshold trading days | d		20
2019 Convertible Senior Notes due 2026 | Maximum
Debt Instrument [Line Items]
Debt instrument, threshold percentage of stock price trigger		98.00%

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Income Taxes - Reconciliation of U.S. Federal Statutory Income Tax Rate to Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
U.S. Statutory Rate	21.00%	21.00%	34.00%
Change in valuation allowance	(22.90%)	(20.60%)	56.40%
State taxes (net of federal benefit)	(0.40%)	0.50%	1.90%
Federal research and development credit	5.90%	4.10%	7.10%
Incentive stock options	(1.90%)	(2.90%)	12.50%
Unrecognized tax benefits	(1.20%)	(1.00%)	(3.50%)
Impact of Tax Cuts and Jobs Act of 2017			(1.135)
Return to provision - deductible transaction costs			5.60%
Other, net	(1.40%)	(0.40%)	0.10%
Effective income tax rate	(0.90%)	0.70%	0.60%

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Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (22,987)	$ (35,231)	$ (17,322)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on investments	43	27	(26)
Total other comprehensive income (loss)	43	27	(26)
Comprehensive loss	$ (22,944)	$ (35,204)	$ (17,348)

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Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used in operating leases	$ 4,617
Operating cash flows used in finance leases	51
Financing cash flows used in finance leases	$ 522	$ 900	$ 1,147

XML

Document and Entity Information - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2019

Jan. 31, 2020

Jun. 30, 2019

Cover [Abstract]

Document Type

10-K

Amendment Flag

false

Document Period End Date

Dec. 31, 2019

Document Fiscal Year Focus

2019

Document Fiscal Period Focus

FY

Trading Symbol

PI

Entity Registrant Name

IMPINJ INC

Entity Central Index Key

0001114995

Current Fiscal Year End Date

--12-31

Entity Well-known Seasoned Issuer

No

Entity Current Reporting Status

Yes

Entity Voluntary Filers

No

Entity Filer Category

Accelerated Filer

Entity Shell Company

false

Entity Emerging Growth Company

true

Entity Ex Transition Period

false

Entity Small Business

false

Entity Common Stock, Shares Outstanding

22,280,132

Entity Public Float

$ 433.5

Entity Interactive Data Current

Yes

Title of 12(b) Security

Common Stock, $0.001 par value per share

Security Exchange Name

NASDAQ

Entity File Number

001-37824

Entity Incorporation, State or Country Code

DE

Entity Tax Identification Number

91-2041398

Entity Address, Address Line One

400 Fairview Avenue North

Entity Address, Address Line Two

Suite 1200

Entity Address, City or Town

Seattle

Entity Address, State or Province

WA

Entity Address, Postal Zip Code

98109

City Area Code

206

Local Phone Number

517-5300

Document Annual Report

true

Document Transition Report

false

Documents Incorporated by Reference

DOCUMENTS INCORPORATED BY REFERENCE

The information required by Part III of this report, to the extent not set forth herein, is incorporated in this report by reference to the registrant’s definitive proxy statement relating to its 2020 annual meeting of stockholders. The definitive proxy statement will be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended December 31, 2019.

XML

Stock-Based Awards - Summary of Restricted Stock Units (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares Outstanding, Balance | shares	32
Number of Shares, Granted | shares	533
Number of Shares, Vested | shares	(44)
Number of Shares, Forfeited | shares	(12)
Number of Shares Outstanding, Balance | shares	509
Weighted-Average Grant-Date Fair Value , Beginning balance | $ / shares	$ 20.21
Weighted-Average Grant-Date Fair Value , Granted | $ / shares	33.60
Weighted-Average Exercise Price Per Share, Vested | $ / shares	21.52
Weighted-Average Exercise Price Per Share, Forfeited | $ / shares	34.58
Weighted-Average Grant-Date Fair Value , Ending balance | $ / shares	$ 33.77
Performance Share Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Granted | shares	267
Number of Shares, Forfeited | shares	(15)
Number of Shares Outstanding, Balance | shares	252
Weighted-Average Grant-Date Fair Value , Granted | $ / shares	$ 17.84
Weighted-Average Exercise Price Per Share, Forfeited | $ / shares	17.03
Weighted-Average Grant-Date Fair Value , Ending balance | $ / shares	$ 17.88

XML

Description of Business

12 Months Ended

Dec. 31, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Description of Business

Note 1. Description of Business

Impinj, Inc., a Delaware corporation, is headquartered in Seattle, Washington. Impinj enables wireless connectivity for everyday items, delivering each item’s unique identity, location and authenticity to business and consumer applications. Impinj’s platform spans endpoints, connectivity and software and provides wireless item connectivity and information delivery. Impinj derives revenue from selling endpoint ICs, reader ICs, reader modules, readers, gateways and software as well as from development, service and license agreements. Our integrated platform connects billions of everyday items to applications, delivering real-time information to businesses about items they create, manage, transport and sell.

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Summary of Significant Accounting Policies - Summary of Allowance for Sales Returns (Details) - Allowance for Sales Returns and Price Exceptions - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 373	$ 3,495	$ 177
Additional Reserve	2,939	1,426	4,166
Applied Sales Return and Price Exceptions	(2,240)	(4,548)	(848)
Balance at End of Year	$ 1,072	$ 373	$ 3,495

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Inventory - Schedule of Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 5,579	$ 3,858
Work-in-process	7,485	13,671
Finished goods	21,089	27,196
Total inventory	$ 34,153	$ 44,725

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Income Taxes - Summary of Income Tax Benefit (Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
U.S. - State	$ (36)	$ (23)	$ (8)
Foreign	(150)	(140)	(126)
Total current	(186)	(163)	(134)
Deferred:
U.S. - Federal	(11)	404	241
U.S. - State	(1)	(8)	(10)
Total deferred	(12)	396	231
Total income tax benefit (expense)	$ (198)	$ 233	$ 97

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Inventory (Tables)

12 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventories

The following table presents the detail of inventories as of the dates presented (in thousands):

	December 31, 2019		December 31, 2018
Raw materials	$	5,579	$	3,858
Work-in-process		7,485		13,671
Finished goods		21,089		27,196
Total inventory	$	34,153	$	44,725

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Retirement Plans

12 Months Ended

Dec. 31, 2019

Compensation And Retirement Disclosure [Abstract]

Retirement Plans

Note 16. Retirement Plans

In 2001, we adopted a salary deferral 401(k) plan for our employees. The plan allows employees to contribute a percentage of their pretax earnings annually, subject to limitations imposed by the Internal Revenue Service. The plan also allows us to make a matching contribution, subject to certain limitations. To date, we have not made any contributions to the plan.

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Restructuring

12 Months Ended

Dec. 31, 2019

Restructuring And Related Activities [Abstract]

Restructuring

Note 12. Restructuring

On February 13, 2018, we initiated a restructuring plan to align our strategic and financial objectives and optimize our resources for long-term growth, including a reduction-in-force affecting approximately 9% of our employees, subleasing unused office space and closing some remote offices. The restructuring was substantially complete as of June 30, 2018. As a result of the restructuring, we recorded a restructuring charge of $3.7 million for the year ended December 31, 2018.

The following table summarizes the activity associated with the restructuring (in thousands):

	Employee Termination Benefits		Cease-Use Costs			Total
Balance at December 31, 2018	$	94	$	975		$	1,069
Effect of the new lease standard adoption(1)		—		(975	)		(975	)
Balance at December 31, 2019	$	94	$	—		$	94
(1) Upon adoption of the new lease standard on January 1, 2019, restructuring liabilities related to cease-use costs were netted against the operating lease right-of-use assets.

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Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 6. Income Taxes

We are subject to federal and state income taxes in the United States and foreign jurisdictions.

The following table presents U.S. and foreign components of income (loss) before incomes taxes:

	Year Ended December 31,
	2019			2018			2017
U.S.	$	(23,291	)	$	(35,933	)	$	(17,761	)
Foreign		502			469			342
Loss before income taxes	$	(22,789	)	$	(35,464	)	$	(17,419	)

The following table presents the detail of income tax benefit (expense) for the periods presented (in thousands):

		Year Ended December 31,
		2019			2018			2017
Current:
U.S. - Federal	$	—			$	—		$	—
U.S. - State			(36	)		(23	)		(8	)
Foreign			(150	)		(140	)		(126	)
			(186	)		(163	)		(134	)
Deferred:
U.S. - Federal			(11	)		404			241
U.S. - State			(1	)		(8	)		(10	)
Foreign			—			—			—
			(12	)		396			231
Total income tax benefit (expense)		$	(198	)	$	233		$	97

We have not recorded a liability for U.S. income taxes and foreign withholding taxes on the undistributed earnings of foreign subsidiaries as of December 31, 2019 as we intend to permanently reinvest future such earnings outside the United States. The amount of the unrecognized deferred tax liability, if incurred, is expected to be immaterial.

The following table presents a reconciliation of the federal statutory rate and our effective tax rate for the periods presented:

	Year Ended December 31,
	2019			2018			2017
U.S. Statutory Rate		21.0	%		21.0	%		34.0	%
Change in valuation allowance		(22.9	)		(20.6	)		56.4
State taxes (net of federal benefit)		(0.4	)		0.5			1.9
Federal research and development credit		5.9			4.1			7.1
Incentive stock options		(1.9	)		(2.9	)		12.5
Unrecognized tax benefits		(1.2	)		(1.0	)		(3.5	)
Impact of Tax Cuts and Jobs Act of 2017		—			—			(113.5	)
Return to provision - deductible transaction costs		—			—			5.6
Other, net		(1.4	)		(0.4	)		0.1
Effective income tax rate		(0.9	%)		0.7	%		0.6	%

We continue to maintain a full valuation allowance against our net deferred tax assets in the U.S. but recognize deferred income tax expense in the U.S. based solely on the amortization of goodwill. Our net deferred tax liability attributable to the amortization of goodwill for tax purposes decreased during the year due to the creation of indefinite net operating loss carryforwards in the current year, which can be partially realized as a result of the deferred tax liability associated with the tax amortization of goodwill.

Deferred federal, state and foreign income taxes reflect the net tax impact of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and such amounts for tax purposes. The following table presents the significant components of our deferred tax assets and liabilities as of the dates presented (in thousands):

	December 31, 2019			December 31, 2018
Net operating loss carryforwards	$	38,391		$	34,279
Credit carryforwards		9,083			8,071
Capitalized research and development		2,235			2,969
Deferred rent		—			1,021
Operating lease liabilities		4,830			—
Allowances		1,694			1,309
Deferred compensation		176			230
Deferred revenue		46			40
Stock-based compensation		2,846			1,340
Other		156			108
Deferred tax assets		59,457			49,367
Less: Valuation allowance		(46,602	)		(48,481	)
Net deferred tax assets		12,855			886
Deferred tax liability:
Goodwill		(645	)		(590	)
Depreciation and amortization		(1,716	)		(433	)
Operating lease ROU assets		(3,576	)		—
2019 Notes		(7,066	)		—
Deferred tax liabilities		(13,003	)		(1,023	)
Net deferred tax liability	$	(148	)	$	(137	)

Realization of deferred tax assets is dependent upon the generation of future taxable income, if any, the timing and amount of which are uncertain. We have provided a full valuation allowance against the net deferred tax assets as of December 31, 2019 and 2018 because, based on the weight of available evidence, it is more likely than not that the deferred tax assets will not be realized.

We have accumulated federal tax losses of approximately $179.1 million and $159.5 million, respectively, as of December 31, 2019 and 2018, which are available to reduce future taxable income. The Tax Cuts and Jobs Act , or TCJA, enacted on December 22, 2017 altered the carryforward period for federal net operating losses and as a result, all net operating losses generated in 2018 and forward have an indefinite life. Of the net operating losses reported, we have accumulated $50.4 million with an indefinite life as of December 31, 2019. We have accumulated state tax losses of approximately $23.8 million and $23.8 million, respectively, as of December 31, 2019 and 2018. Additionally, we have net research and development credit carryforwards of $12.0 million and $10.6 million, respectively, as of December 31, 2019 and 2018, which are available to reduce future tax liabilities. The pre-2018 federal tax losses and research and development credit carryforwards begin expiring in 2020. Under Sections 382 and 383 of the Internal Revenue Code, if a corporation undergoes an ownership change, the corporation’s ability to use its pre-change net operating loss carryforwards and other pre-change tax attributes, such as research tax credits, to offset its post-change income or income tax liability may be limited.

We are currently not under audit in any tax jurisdiction. Tax years from 2000 through 2019 are currently open for audit by federal and state taxing authorities.

We establish reserves for tax positions based on estimates of whether, and the extent to which, additional taxes will be due. The reserves are established when we believe that positions might be challenged by taxing authorities despite our belief that our tax return positions are fully supportable.

The following table presents the total balance of unrecognized tax benefits as of the dates presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Balance at beginning of period	$	3,159	$	2,906	$	2,597
Gross increase to tax positions in prior periods		—		—		2
Gross increase to tax positions in current periods		269		253		307
Balance at end of period	$	3,428	$	3,159	$	2,906

At December 31, 2019, the total amount of unrecognized tax benefits of $3.4 million is recorded as a reduction to the deferred tax asset. If recognized, it would have no impact to our effective tax rate as we have a full valuation allowance. We do not anticipate that the amount of existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Accrued interest and penalties related to unrecognized tax benefits are recorded as income tax expense and are zero.

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Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 2. Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements include Impinj, Inc. and its wholly owned subsidiaries. Intercompany balances and transactions have been eliminated in consolidation. These consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles, or GAAP.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make certain estimates, judgments and assumptions that affect the reported amounts of assets and liabilities and the related disclosures as of the date of the financial statements, as well as the reported amounts of revenue and expenses during the periods presented. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, sales incentives, estimated costs to complete development contracts, deferred revenue, inventory excess and obsolescence, income taxes, the determination of the fair value of stock awards and compensation and employee related benefits. To the extent there are material differences between these estimates, judgments, or assumptions and actual results, our financial statements will be affected.

Concentrations of Credit Risk

Financial instruments, which potentially subject us to concentrations of credit risk, consist primarily of cash equivalents, investments and accounts receivable. We place cash and cash equivalents and investments with major financial institutions, which management assesses to be of high credit quality, to limit our investments exposure. We extend credit to customers based upon our evaluation of the customer’s financial condition and generally collateral is not required. The following table presents total revenue and accounts receivable concentration for the periods presented or as of the dates presented:

	Year Ended December 31,
	2019			2018			2017
Revenue:
Avery Dennison		19	%		22	%		18	%
North American Systems customer		14		*			*
Smartrac		12			17			14
Arizon	*				10			13
Blue Star	*			*				10
		45	%		49	%		55	%
* Less than 10%

	As of December 31,
	2019			2018
Accounts Receivable:
Blue Star		18	%		13	%
Avery Dennison		15			14
Smartrac		13			21
Arizon	*				10
		46	%		58	%
* Less than 10%

Concentration of Supplier Risk

We outsource the manufacturing and production of our hardware products to a small number of suppliers. Although there are a limited number of manufacturers for hardware products, we believe that other suppliers could provide similar products on comparable terms. A change in suppliers, however, could cause a delay in manufacturing and a possible loss of sales, which would adversely affect our operating results.

Cash and Cash Equivalents

Cash includes demand deposits with banks or financial institutions. Cash equivalents include short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Our cash equivalents include only investments with an original or remaining maturity of three months or less at the date of purchase. We regularly maintain cash in excess of federally insured limits at financial institutions.

Investments

Our investments consist of fixed income securities, which include U.S. government agency securities, corporate notes and bonds and commercial paper. Because we use the investments to support current operations, the contractual maturities of our available-for-sale securities are due in one year or less and are classified as short-term investments. Available-for-sale securities are carried at fair value with unrealized gains and losses reported as a component of accumulated other comprehensive income (loss) in stockholders’ equity, while realized gains and losses and other-than-temporary impairments are reported as a component of net income (loss) based on specific identification. An impairment charge is recorded in the consolidated statements of operations for declines in fair value below the cost of an individual investment that are deemed to be other than temporary. We assess whether a decline in value is temporary based on the length of time that the fair market value has been below cost, the severity of the decline and the intent and ability to hold or sell the investment. The gross unrealized gains or losses on short-term investments as of December 31, 2019 and 2018 were not material. We did not identify any investments as other-than-temporarily impaired as of December 31, 2019 or 2018.

Fair Value Measurement

Accounting standards define fair value as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market in an orderly transaction between market participants on the measurement date. The standards also establish a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. There are three levels of inputs that may be used to measure fair value:

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

• Level 2 — Assets and liabilities valued based on observable market data for similar instruments, such as quoted prices for similar assets or liabilities.

• Level 3 — Unobservable inputs that are supported by little or no market activity; instruments valued based on the best available data, some of which is internally developed, and considers risk premiums that a market participant would require.

We applied the following methods and assumptions in estimating our fair value measurements:

Cash equivalents — Cash equivalents comprise highly liquid investments, including money market funds and certificates of deposit, with an original or remaining maturity of three months or less at the date of purchase. The fair value measurement of these assets is based on quoted market prices in active markets.

Investments — Our investments comprise fixed income securities, which include U.S. government agency securities, corporate notes and bonds, commercial paper and treasury bills. The fair value measurement of these assets is based on observable market-based inputs or inputs that are derived principally from or corroborated by observable market data by correlation or other means.

Long-term debt— The fair values of our senior credit facility included in long-term debt in our consolidated balance sheets approximated carrying value based on the borrowing rates currently available to us for loans with similar terms using Level 2 inputs as of December 31, 2018. See Note 7 for the carrying amount and estimated fair value of our convertible senior notes due in 2026.

Accounts Receivable and Allowances

Accounts receivable comprises amounts billed currently due from customers, net of an allowance for doubtful accounts, an allowance for sales returns and price exceptions.

The allowance for doubtful accounts is our best estimate of the amount of probable credit losses in existing accounts receivable and is determined based on our historical collections experience, age of the receivable, knowledge of the customer and the condition of the general economy and industry as a whole. We record changes in our estimate to the allowance for doubtful accounts through bad debt expense and write off the receivable and corresponding allowance when accounts are ultimately determined to be uncollectible. Bad debt expense is included in general and administrative expenses. For the periods presented in this report, bad debt expense was not material.

The allowance for sales returns and price exceptions is our best estimate based on our historical experience and currently available evidence. We record changes in our estimate to the allowance for sales returns and price exceptions through revenue and relieve the allowance when product returns are received for sales returns and when claims are processed for price exceptions. In 2017, we reserved for $3.2 million related to a product exchange that we completed in the first quarter of 2018.The following table summarizes our allowance for sales returns (in thousands):

	Balance at Beginning of Year		Additional Reserve		Applied Sales Return and Price Exceptions			Balance at End of Year
Allowance for sales returns and price exceptions:
During year ended December 31, 2019	$	373	$	2,939	$	(2,240	)	$	1,072
During year ended December 31, 2018		3,495		1,426		(4,548	)		373
During year ended December 31, 2017		177		4,166		(848	)		3,495

Inventory

Inventories are stated at the lower of cost or estimated net realizable value using the average costing method, which approximates the first-in, first-out method. Inventories comprise raw materials, work-in-process and finished goods. We continuously assess the value of our inventory and write down its value for estimated excess and obsolete inventory. This evaluation includes an analysis of inventory on hand, current and forecasted demand, product development plans, and market conditions. If future demand or market conditions are less favorable than our projections, or our product development plans change from current expectations, a write-down of excess or obsolete inventory may be required, and would be reflected in cost of goods sold in the period the updated information is known.

We recorded inventory excess and obsolescence charges, which had an unfavorable net impact of 1.7% and 1.2% on our gross margin for 2019 and 2018, respectively. Inventory excess and obsolescence charges were not material for the year ended December 31, 2017.

Property and Equipment

We record property and equipment at cost and depreciate it using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows:

Category	Useful Life
Laboratory equipment	3 to 10 years
Computer equipment and software	2 to 5 years
Furniture and fixtures	3 to 7 years
Equipment acquired under finance leases	3 to 7 years
Leasehold improvements	Shorter of remaining lease term or expected useful life

Maintenance and repair costs are charged to expense as incurred. Major improvements, which extend the useful life of the related asset, are capitalized. Upon disposal of a fixed asset, we record a gain or loss based on the differences between the proceeds received and the net book value of the disposed asset.

Goodwill

Goodwill is measured as the excess of the cost of acquisition over the sum of the amounts assigned to identifiable tangible and intangible assets acquired less liabilities assumed. We perform an annual impairment assessment of goodwill at the reporting unit level as of September 30, or more frequently if indicators of potential impairment exist. Our annual impairment assessment requires a comparison of the fair value of our reporting unit to the carrying value. If the fair value of a reporting unit exceeds its carrying amount, goodwill of the reporting unit is considered not impaired. If the carrying value of a reporting unit is greater than its fair value, an impairment loss will be recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. Additionally, we will consider the income tax effect from any tax deductible goodwill on the carrying amount of the reporting unit when measuring the goodwill impairment loss.

Revenue Recognition

We generate revenue primarily from sales of hardware products. We also generate revenue from software, extended warranties, enhanced maintenance, support services, and nonrecurring engineering development services, all of which are not material.

We recognize revenue when control of the promised goods or services is transferred to our customers, which for hardware sales is generally at the time of product shipment as determined by the agreed-upon shipping terms. We measure revenue based on the amount of consideration we expect to be entitled-to in exchange for those goods or services. The period between when we transfer control of promised goods or services and when we receive payment is expected to be one year or less, and that expectation is consistent with our historical experience. As such, we do not adjust our revenues for the effects of a significant financing component. We record any variable consideration, which primarily comprises sales incentives, as a reduction of revenue at the time of initial revenue recognition. We estimate sales incentives based on our historical experience and current expectations at the time of revenue recognition and update them at the end of each reporting period as additional information becomes available.

Our reader and gateway products are highly dependent on, and interrelated with, embedded software and cannot function without this embedded software. In these cases, we account for the hardware and software license as a single performance obligation and recognize revenue at the point in time when control is transferred. Additionally, we sell standalone system software that configures, manages and controls readers and gateways and other software that performs other functions. This standalone software is not integrated directly in the functionality of the reader or gateway. Our software licenses, both for embedded and standalone software, provide the customer with a right to use the software as it exists when we make it available to the customer. Based on the software product, customers purchase either perpetual licenses or subscribe to licenses for a specified term, which differ mainly in the duration over which the customer benefits from the software. Consequently, we recognize revenue for standalone software at a point in time when the software is made available to the customer.

Our contracts with customers with multiple performance obligations generally include a combination of hardware products, standalone software, extended warranty and enhanced maintenance and support services. For these contracts, we account for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling-price basis. In instances where the standalone selling price is not directly observable, such as when we do not sell the product or service separately, we determine the standalone selling price using one, or a combination of, the adjusted market assessment or expected cost-plus margin. Amounts allocated to extended warranty and enhanced maintenance sold with our reader and gateway products are deferred and recognized on a straight-line basis over the term of the arrangement, which is typically from one to three years. Amounts allocated to support services sold with our reader and gateway products are deferred and recognized when control of the promised services is transferred to our customers.

For nonrecurring engineering development agreements that involve significant production, modification or customization of our products, we generally recognize revenue over the performance period using the cost-input method because it best depicts the transfer of services to the customer. We receive payments under these agreements based on a billing schedule. Contract assets relate to our conditional right to consideration for our completed performance under these agreements. Accounts receivable are recorded when the right to consideration becomes unconditional. Contract liabilities, or deferred revenue, relate to payments received in advance of performance under the contract. Contract liabilities are recognized as revenue as we perform under the contract. For the periods presented in this report, our contract assets, deferred revenue and the value of unsatisfied performance obligations for nonrecurring engineering development agreements are not material.

Payment terms typically range from 30 to 120 days. We present revenue net of sales tax in our consolidated statements of operations. Shipping charges billed to customers are included in revenue and the related shipping costs are included in cost of revenue.

Practical Expedients and Exemptions: We expense sales commissions when incurred because the amortization period is expected to be one year or less. We record these costs within sales and marketing expenses. We do not disclose the value of unsatisfied performance obligations for (1) contracts with an original expected length of one year or less and (2) contracts for which we recognize revenue at the amount to which we have the right to invoice for services performed. 

Product Warranties

We provide limited warranty coverage for most products, generally ranging from a period of 90 days to one year from the date of shipment. We record a liability for the estimated cost of product warranties based on historical claims, product failure rates and other factors when the related revenue is recognized. We review these estimates periodically and adjust the warranty reserves as actual experience differs from historical estimates or other information becomes available. The warranty liability primarily includes the anticipated cost of materials, labor and shipping necessary to repair or replace the product. Accrued warranty costs in 2019 and 2018 were not material.

Leases

We determine whether an arrangement is or contains a lease at inception. Right-of-use, or ROU, assets represent our right to use an identified asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of future lease payments over the lease term. We use an incremental borrowing rate in determining the present value of future lease payments as our operating leases do not provide an implicit rate. Our incremental borrowing rate is based on a credit-adjusted risk-free rate, which best approximates a secured rate over a similar term of lease. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Our lease agreements may contain variable costs such as common area maintenance, insurance, real estate taxes or other costs. Variable lease costs are expensed as incurred on the consolidated statements of operations. Our lease agreements generally do not contain any residual value guarantees or restrictive covenants. Finance lease ROU assets are included in property and equipment, net in our consolidated balance sheets.

We have various non-cancellable operating lease agreements for office, warehouse and research and development space in the U.S., China, Thailand and Malaysia, with expiration dates from 2020 to 2026. Certain of these arrangements have free or escalating rent payment provisions and optional renewal and termination clauses that are factored into the classification and measurement of the lease when appropriate. These lease agreements typically include lease and non-lease components and are generally accounted for as a single lease component.

Leases with an initial term of 12 months or less are not recorded on our consolidated balance sheet; we recognize lease expense for these leases on a straight-line basis over the lease term.

Research and Development Costs

Research and development expense consists primarily of personnel expenses (salaries, benefits and other employee related costs) and stock-based compensation expense for our product-development personnel; external consulting and service costs; prototype materials; other new product development costs; and an allocated portion of infrastructure costs, which include occupancy, depreciation and software costs.

Foreign Currency

Our foreign subsidiaries are considered to be extensions of the U.S. Company. The functional currency of the foreign subsidiaries is the U.S. dollar. Accordingly, gains and losses resulting from remeasuring transactions denominated in currencies other than U.S. dollars are included in other income, net on the consolidated statements of operations.

Income Taxes

We use the asset and liability approach for accounting, which requires recognizing deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement and tax bases. We measure deferred tax assets and liabilities using enacted tax rates expected to be in effect when such assets and liabilities are recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the year that includes the enactment date. We determine deferred tax assets, including historical net operating losses, and deferred tax liabilities, based on temporary differences between the book and tax bases of assets and liabilities. We believe that it is currently more likely than not that our deferred tax assets will not be realized and as such, we have recorded a full valuation allowance for these assets. We evaluate the likelihood of our ability to realize deferred tax assets in future periods on a quarterly basis, and when appropriate evidence indicates we would revise our valuation allowance accordingly.

We utilize a two-step approach for evaluating uncertain tax positions. First, we evaluate recognition, which requires us to determine if the weight of available evidence indicates that a tax position is more likely than not to be sustained upon audit, including resolution of related appeals or litigation processes. If a tax position is not considered more likely than not to be sustained, no benefits of the position are recognized. Second, we measure the uncertain tax position based on the largest amount of benefit which is more likely than not to be realized on effective settlement. This process involves estimating our actual current tax exposure, including assessing the risks associated with tax audits, together with assessing temporary differences resulting from the different treatment of items for tax and financial reporting purposes. If actual results differ from our estimates, our net operating loss and credit carryforwards could be materially impacted.

Our realization of the benefits of the NOLs and credit carryforwards depends on sufficient taxable income in future years. We have established a valuation allowance against the carrying value of our deferred tax assets, as it is currently more likely than not that we will not be able to realize these deferred tax assets. In addition, using NOLs and credits to offset future income subject to taxes may be subject to substantial annual limitations due to the “change in ownership” provisions of the Code and similar state provisions. Events that cause limitations in the amount of NOLs that we may use in any one year include, but are not limited to, a cumulative ownership change of more than 50%, as defined by Code Sections 382 and 383, over a three-year period. Utilizing our NOLs and tax credit carryforwards could be significantly reduced if a cumulative ownership change of more than 50% has occurred in our past or occurs in our future.

We do not anticipate that the amount of our existing unrecognized tax benefits will significantly increase or decrease within the next 12 months. Due to the presence of NOLs in most jurisdictions, our tax years remain open for examination by taxing authorities back to 2000.

Stock-Based Compensation

We have equity incentive plans that are more fully described in “Note 9 Stock-Based Awards”.

We measure stock-based compensation costs for all share-based awards at fair value on the grant date and recognize compensation expense on a straight-line basis over the requisite service period, which typically vest over four years. We account for forfeitures as they occur. We determine the fair value of RSUs based on the closing price of our common stock at the date of grant. We determine the fair value of stock options at the date of grant by using the Black-Scholes option-pricing model. We also use the Black-Scholes option-pricing model to determine the fair value of each common share issued under the ESPP. We determine the fair value of the ESPP grants on the first day of each offering period.

In 2019, we began granting RSUs with performance conditions, or PSUs, replacing what has historically been our annual cash-bonus program for our senior executives and other bonus-eligible employees. The number of PSUs that ultimately vest will depend on the extent to which we achieve specified fiscal year financial performance metrics. We record compensation expense each period on a straight-line basis based on our estimate of the most probable number of PSUs that will vest and recognize that expense over the requisite service period.

Net Loss per Share

Net loss per share is computed by dividing net loss by the weighted-average number of shares of common stock outstanding. We have outstanding stock options, restricted stock units and ESPPs and unvested common stock subject to repurchase which we include in the calculation of diluted net loss per share if their effect would be dilutive. The diluted net loss per share is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period.

We use the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net loss per share, if applicable since we expect to settle the principal amount of the outstanding 2019 Notes in cash. For more information about the 2019 Notes, please refer to Note 7 to our consolidated financial statements.

Recently Adopted Accounting Standards

In February 2016, the Financial Accounting Standards Board, or FASB, issued guidance on leases. This standard requires recognizing a right-of-use asset and lease liability on the balance sheet for all leases. It also requires more detailed disclosures to enable users of financial statements to understand the amount, timing, and uncertainty of cash flows arising from leases. This standard is effective for interim and annual reporting periods beginning after December 15, 2018. We adopted this standard on January 1, 2019 using the effective-date modified retrospective transition method and elected the available practical expedients permitted under the transition method, allowing us to carryforward our historical assessments of (1) whether contracts are or contain leases, (2) lease classification, and (3) initial direct costs. Upon adopting this standard, we recorded net operating lease ROU assets and lease liabilities of $18.7 million and $25.3 million, respectively, as of January 1, 2019. Net restructuring liabilities of $1.0 million related to cease-use costs and net deferred rent of $5.6 million were netted against the operating lease ROU assets upon adoption of this guidance. Our accounting for finance leases remained substantially unchanged. Our consolidated financial statements for the year ended and as of December 31, 2019 are presented under the new standard, while comparative prior periods presented are not adjusted and continue to be reported in accordance with our historical accounting policy. The adoption of this guidance did not impact our results of operations.

In June 2018, the FASB issued guidance to improve nonemployee share-based payment accounting that requires companies to account for share-based payments granted to nonemployees similar to share-based payments granted to employees. This guidance is effective for fiscal years beginning after December 15, 2018, including the interim periods within those fiscal years. We adopted this standard on January 1, 2019 and the adoption of this guidance did not impact our financial positions, results of operations or cash flows.

In August 2018, the FASB issued guidance to align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software. This guidance is effective for fiscal years beginning after December 15, 2019, including the interim periods within those fiscal years. Early adoption of this guidance is permitted. We early adopted this guidance prospectively on January 1, 2019 and the adoption of this guidance did not impact our financial positions, results of operations or cash flows.

In December 2019, the FASB issued guidance to improve areas of GAAP by removing certain exceptions permitted by Topic 740 - Income Taxes and clarifying existing guidance to facilitate consistent application. Early adoption of the new standard is permitted. We early adopted this guidance prospectively on January 1, 2019. Since we have incurred net losses since our inception and maintained a full valuation allowance on our net deferred tax assets, the adoption did not have a material impact on our financial positions, results of operations and cash flows, or financial statement disclosures.

Recently Issued Accounting Standards Not Yet Adopted

In June 2016, the FASB issued guidance on measuring credit losses on financial instruments. This guidance requires measuring and recognizing expected credit losses for financial assets held at amortized cost. This guidance is effective for interim and annual reporting periods beginning after December 15, 2019, and early adoption is permitted. We will adopt this guidance on January 1, 2020. The adoption of this guidance requires a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. While we continue to assess all potential impacts of this new standard, we do not expect the adoption of this guidance to have a material impact on our financial position, results of operations or cash flows.

Other recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force), the American Institute of Certified Public Accountants, and the Securities and Exchange Commission did not have, or are not expected to have, a material impact on our present or future consolidated financial statements.

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Leases

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases

Note 10. Leases

The following table presents the components of lease expense in our consolidated statements of operations for the periods presented (in thousands):

	Year Ended
	December 31, 2019
Operating lease costs(a)
Single lease costs	$	4,170
Variable lease costs		1,623
Sublease income(b)		(1,796	)
Total operating lease costs	$	3,997
Finance lease costs:
Amortization of right-of-use assets		433
Interest on lease liabilities		51
Total finance lease costs		484
(a) Includes short-term lease costs, which are immaterial.
(b) Sublease income is related to unused office space that was sublet as part of the restructuring in fiscal 2018 where we continue to be the primary obligor for the lease.

The following table presents supplemental cash flow information related to leases for the periods presented (in thousands):

	Year Ended
	December 31, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows used in operating leases	$	4,617
Operating cash flows used in finance leases		51
Financing cash flows used in finance leases		522

The following table presents weighted-average remaining lease term and weighted-average discount rate related to leases as of:

	December 31, 2019
Weighted-average remaining lease term (years)
Operating leases		6.1
Finance leases		0.7
Weighted-average discount rate
Operating leases		6.8	%
Finance leases		10.1	%

The following table presents future lease payments under operating and finance leases as of December 31, 2019 (in thousands):

	Operating Leases								Finance Leases
	Lease Payments			Sublease Income			Net		Lease Payments
2020	$	4,755		$	(1,373	)	$	3,382	$	269
2021		4,790			(1,414	)		3,376		1
2022		4,650			(1,457	)		3,193		—
2023		3,263			(123	)		3,140		—
2024		3,219			—			3,219		—
Thereafter		6,728			—			6,728		—
Total lease payments	$	27,405		$	(4,367	)	$	23,038	$	270
Less: Imputed interest		(5,118	)							(11	)
Present value of lease liabilities		22,287								259
Less: Current portion of lease liabilities		(3,380	)							(258	)
Lease liabilities, net of current portion	$	18,907							$	1

The following table presents future minimum lease payments under operating and capital leases in accordance with Topic 840 as of December 31, 2018 (in thousands):

	Operating Leases		Capital Leases
2019	$	3,573	$	575
2020		3,340		270
2021		3,305		—
2022		3,193		—
2023		3,140		—
Thereafter		9,947		—
Total minimum lease payments	$	26,498	$	845
Less: Imputed interest				(64	)
Present value of capital lease obligations				781
Less: Current portion of capital lease obligations				(523	)
Capital lease obligations net of current portion			$	258

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Stock-Based Awards (Tables)

12 Months Ended

Dec. 31, 2019

Summary of Stock Option Activity

The following table summarizes option award activity for the year ended December 31, 2019 (in thousands, except per share data and years):

	Number of Shares			Weighted-Average Exercise Price Per Share		Weighted-Average Remaining Contractual Life (Years)		Total Intrinsic Value
Outstanding at December 31, 2018		3,603		$	17.67		8.43	$	7,898
Granted		571			31.09
Exercised		(508	)		12.35
Forfeited or expired		(404	)		18.87
Outstanding at December 31, 2019		3,262			20.70		7.98		22,033
Vested and exercisable at December 31, 2019		1,416		$	16.39		7.00	$	14,345

Schedule of Stock Options Valuation Assumptions

We estimate the fair value of options granted at the date of grant using the Black-Scholes option-pricing model with the following assumptions for the periods presented:

	Year Ended December 31,
	2019		2018		2017
Risk-free interest rate	1.4% – 2.6%		2.3% – 3.1%		1.8% – 2.2%
Expected dividends yield	None		None		None
Expected volatility	60.8% - 64.3%		57.7% - 66.1%		52.2% – 59.1%
Weighted-average expected term	6.08		6.04		6.08
Weighted-average fair value of options granted	$	18.31	$	11.85	$	19.15

Schedule of Employee Stock Purchase Plan Valuation Assumptions

We estimate the fair value of the ESPP granted at the start of the offering period using the Black-Scholes option-pricing model with the following assumptions for the periods presented:

	Year Ended December 31,
	2019	2018	2017
Risk-free interest rate	1.9% – 2.5%	2.4%	0.7% – 1.1%
Expected term	0.5 years	0.3 years	0.5 years
Expected volatility	66.5% – 72.3%	75.9%	66.5% – 71.2%

Summary of Stock-Based Compensation Expense

The following table presents the detail of stock-based compensation expense amounts included in our consolidated statements of operations for the periods indicated (in thousands):

	Year Ended December 31,
	2019		2018		2017
Cost of revenue	$	772	$	469	$	231
Research and development expense		6,427		3,663		2,431
Sales and marketing expense		6,003		4,166		3,113
General and administrative expense		5,284		3,019		1,653
Total stock-based compensation expense	$	18,486	$	11,317	$	7,428

Restricted Stock Units

Summary of Restricted Stock Units

The following table summarizes activity for restricted stock units, RSUs, including RSUs with performance conditions, or PSUs, for the year ended December 31, 2019 (in thousands, except per share data):

	Number of Shares						Weighted-Average Grant Date Fair Value
	RSUs			PSUs			RSUs		PSUs
Outstanding at December 31, 2018		32			—		$	20.21	$	—
Granted		533			267			33.60		17.84
Vested		(44	)		—			21.52		—
Forfeited		(12	)		(15	)		34.58		17.03
Outstanding at December 31, 2019		509			252		$	33.77	$	17.88

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Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Summary of Revenue Categories

The following table presents our revenue categories for the periods presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Revenue:
Endpoint ICs	$	97,657	$	84,974	$	91,699
Systems		55,179		37,659		33,601
Total revenue	$	152,836	$	122,633	$	125,300

Summary of Sales by Geography

The following table presents our sales by geography for the periods presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Americas	$	53,260	$	30,636	$	29,656
Asia Pacific		89,012		79,290		80,531
Europe, Middle East and Africa		10,564		12,707		15,113
Total revenue	$	152,836	$	122,633	$	125,300

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Long-term Debt - Senior Credit Facility - Additional Information (Details) - USD ($)			12 Months Ended
	Dec. 16, 2019	Apr. 26, 2019	Dec. 31, 2019
Line Of Credit Facility [Line Items]
Net proceeds from repayment of senior credit facility	$ 24,000,000
Loss on debt extinguishment	576,000		$ 576,000
Prepayment penalty	470,000
Write-off of unamortized debt issuance costs	$ 106,000
Term Loan
Line Of Credit Facility [Line Items]
Line of credit facility, mature date		Apr. 01, 2023
Term loan		$ 23,500,000
Line of credit facility, amortization period		36 months
Line of credit facility, initial interest-only period		12 months
Line of credit facility, beginning date		May 01, 2020
Term Loan | Term Loan Prepaid On or Before April 26, 2020
Line Of Credit Facility [Line Items]
Percentage of prepayment fee		2.00%
Term Loan | Term Loan Prepaid After April 26, 2020, But On or Before April 26, 2021
Line Of Credit Facility [Line Items]
Percentage of prepayment fee		1.00%
Revolving Credit Facility
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 25,000,000
Revolving Credit Facility | Term Loan
Line Of Credit Facility [Line Items]
Line of credit facility, mature date		May 01, 2021
Letter of Credit
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 5,000,000

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Income Taxes - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Accumulated federal tax losses	$ 179,100,000	$ 159,500,000
Accumulated federal tax losses with indefinite life	50,400,000
Accumulated state tax losses	23,800,000	23,800,000
Research and development credit carry-forwards	$ 12,000,000	10,600,000
Federal tax losses and research and development credit carryforward expiration year	2020
Unrecognized tax benefits	$ 3,428,000	$ 3,159,000	$ 2,906,000	$ 2,597,000
Accrued interest and penalties related to unrecognized tax benefits	0
Unrecognized tax benefits, if recognized would impact the effective tax rate	$ 0

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Net Loss Per Share - Computation of Diluted Net Loss Per Share Effect in Antidilutive (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Stock Options and Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	3,908	3,284	2,911
Unvested Shares of Common Stock Subject to Repurchase
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share	3	20	48

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Restructuring - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 13, 2018	Dec. 31, 2018
Restructuring And Related Activities [Abstract]
Restructuring initiated date	Feb. 13, 2018
Percentage of employee affected under reduction in force	9.00%
Restructuring costs		$ 3,749

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Segment Reporting - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) Segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment	1
Number of operating segments | Segment	1
Description of long-lived assets located	Substantially all our long-lived assets are located in the United States.
Total revenue	$ 152,836	$ 122,633	$ 125,300
United States
Segment Reporting Information [Line Items]
Total revenue	50,200	29,500	28,800
China (Including Hong Kong)
Segment Reporting Information [Line Items]
Total revenue	$ 70,800	$ 64,300	$ 68,000

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Fair Value Measurements - Summary of Assets Measured at Fair Value on Recurring Basis (Details) - Fair Value Measurements Recurring - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 95,260	$ 50,439
Cash Equivalents
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	45,663	11,896
Cash Equivalents | Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	45,663	11,896
Short-term Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	49,597	38,543
Short-term Investments | U.S. Government Agency Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	32,323	7,482
Short-term Investments | Corporate Notes and Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	13,305	3,736
Short-term Investments | Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	3,969	9,943
Short-term Investments | Treasury Bills
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value		17,382
Level 1
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	45,663	11,896
Level 1 | Cash Equivalents
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	45,663	11,896
Level 1 | Cash Equivalents | Money Market Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	45,663	11,896
Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	49,597	38,543
Level 2 | Short-term Investments
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	49,597	38,543
Level 2 | Short-term Investments | U.S. Government Agency Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	32,323	7,482
Level 2 | Short-term Investments | Corporate Notes and Bonds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	13,305	3,736
Level 2 | Short-term Investments | Commercial Paper
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 3,969	9,943
Level 2 | Short-term Investments | Treasury Bills
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets measured at fair value		$ 17,382

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Property and Equipment - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property Plant And Equipment [Line Items]
Depreciation	$ 4,809	$ 4,534	$ 3,950
Property and equipment, net	17,442	19,778
Equipment Acquired Under Finance Leases
Property Plant And Equipment [Line Items]
Property and equipment, net	$ 700	$ 1,100

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Stock-Based Awards - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 18,486	$ 11,317	$ 7,428
Cost of Revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	772	469	231
Research and Development Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	6,427	3,663	2,431
Selling and Marketing Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	6,003	4,166	3,113
General and Administrative Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total stock-based compensation expense	$ 5,284	$ 3,019	$ 1,653

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Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Statement Of Stockholders Equity [Abstract]
Net issuance cost	$ 1,089

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Stock-Based Awards - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	May 16, 2018	Dec. 31, 2019	Dec. 31, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Shares, Outstanding, Beginning balance		3,603
Number of Shares, Granted	700	571
Number of Shares, Exercised		(508)
Number of Shares, Forfeited or expired		(404)
Number of Shares, Outstanding, Ending balance		3,262	3,603
Number of Shares, Vested and exercisable		1,416
Weighted-Average Exercise Price Per Share, Outstanding, Beginning balance		$ 17.67
Weighted-Average Exercise Price Per Share, Granted	$ 17.33	31.09
Weighted-Average Exercise Price Per Share, Exercised		12.35
Weighted-Average Exercise Price Per Share, Forfeited or Expired		18.87
Weighted-Average Exercise Price Per Share, Outstanding, Ending balance		20.70	$ 17.67
Weighted-Average Exercise Price Per Share, Vested and exercisable		$ 16.39
Weighted-Average Remaining Contractual Life (Years), Outstanding		7 years 11 months 23 days	8 years 5 months 4 days
Weighted-Average Remaining Contractual Life (Years), Vested and exercisable		7 years
Total Intrinsic Value, Outstanding		$ 22,033	$ 7,898
Total Intrinsic Value, Vested and exercisable		$ 14,345

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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Accounts receivable, allowances	$ 1,281	$ 551
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	495,000,000	495,000,000
Common stock, shares issued	22,217,000	21,492,000
Common stock, shares outstanding	22,217,000	21,492,000

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Leases - Schedule of Future Lease Payments under Operating Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating Leases, Lease Payments, 2020	$ 4,755
Operating Leases, Lease Payments, 2021	4,790
Operating Leases, Lease Payments, 2022	4,650
Operating Leases, Lease Payments, 2023	3,263
Operating Leases, Lease Payments, 2024	3,219
Operating Leases, Lease Payments, Thereafter	6,728
Operating Leases, Lease Payments, Total lease payments	27,405
Less: Imputed interest	(5,118)
Present value of lease liabilities	22,287	$ 25,300
Less: Current portion of lease liabilities	(3,380)
Operating lease liabilities, net of current portion	18,907
Operating Leases, Sublease Income, 2020	(1,373)
Operating Leases, Sublease Income, 2021	(1,414)
Operating Leases, Sublease Income, 2022	(1,457)
Operating Leases, Sublease Income, 2023	(123)
Operating Leases, Sublease Income, Total lease payments	(4,367)
Operating Leases, Net, 2020	3,382
Operating Leases, Net, 2021	3,376
Operating Leases, Net, 2022	3,193
Operating Leases, Net, 2023	3,140
Operating Leases, Net, 2024	3,219
Operating Leases, Net, Thereafter	6,728
Operating Leases, Net, Total lease payments	23,038
Finance Leases, Lease Payments, 2020	269
Finance Leases, Lease Payments, 2021	1
Finance Leases, Lease Payments, Total lease payments	270
Less: Imputed interest	(11)
Present value of lease liabilities	259
Less: Current portion of lease liabilities	(258)		$ (523)
Finance lease liabilities, net of current portion	$ 1		$ 258

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Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Schedule of Revenue and Accounts Receivable Concentration

The following table presents total revenue and accounts receivable concentration for the periods presented or as of the dates presented:

	Year Ended December 31,
	2019			2018			2017
Revenue:
Avery Dennison		19	%		22	%		18	%
North American Systems customer		14		*			*
Smartrac		12			17			14
Arizon	*				10			13
Blue Star	*			*				10
		45	%		49	%		55	%
* Less than 10%

	As of December 31,
	2019			2018
Accounts Receivable:
Blue Star		18	%		13	%
Avery Dennison		15			14
Smartrac		13			21
Arizon	*				10
		46	%		58	%
* Less than 10%

Summary of Allowance for Sales Returns

The following table summarizes our allowance for sales returns (in thousands):

	Balance at Beginning of Year		Additional Reserve		Applied Sales Return and Price Exceptions			Balance at End of Year
Allowance for sales returns and price exceptions:
During year ended December 31, 2019	$	373	$	2,939	$	(2,240	)	$	1,072
During year ended December 31, 2018		3,495		1,426		(4,548	)		373
During year ended December 31, 2017		177		4,166		(848	)		3,495

Schedule of Property and Equipment Estimated Useful Lives

We record property and equipment at cost and depreciate it using the straight-line method over the estimated useful lives of the related assets. The useful lives are as follows:

Category	Useful Life
Laboratory equipment	3 to 10 years
Computer equipment and software	2 to 5 years
Furniture and fixtures	3 to 7 years
Equipment acquired under finance leases	3 to 7 years
Leasehold improvements	Shorter of remaining lease term or expected useful life

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Segment Reporting

12 Months Ended

Dec. 31, 2019

Segment Reporting [Abstract]

Segment Reporting

Note 14. Segment Reporting

We have one reportable and operating segment: the development and sale of our products and services. Our reportable segment has been identified based on how our chief operating decision-maker manages our business, makes operating decisions and evaluates our operating performance. Our chief executive officer acts as the chief operating decision-maker and reviews financial and operational information on an entity-wide basis. We have one business activity and there are no segment managers who are held accountable for operations, operating results or plans for levels or components. Accordingly, we have determined that we have a single reporting segment and operating unit structure.

Our chief executive officer reviews information about revenue categories, including endpoint ICs and systems. We define systems as reader ICs, reader modules, readers, gateways and software The following table presents our revenue categories for the periods presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Revenue:
Endpoint ICs	$	97,657	$	84,974	$	91,699
Systems		55,179		37,659		33,601
Total revenue	$	152,836	$	122,633	$	125,300

Our assets are primarily located in the United States and not allocated to any specific geographic region. Therefore, geographic information is presented only for total revenue. Substantially all our long-lived assets are located in the United States.

Revenue presented in the following table is based on the location of the value-added resellers, inlay manufacturers, reader OEMs, distributors or end users who purchased products and services directly from us. For sales to our resellers and distributors, their location may be different from the locations of the ultimate end users. The following table presents our sales by geography for the periods presented (in thousands):

	Year Ended December 31,
	2019		2018		2017
Americas	$	53,260	$	30,636	$	29,656
Asia Pacific		89,012		79,290		80,531
Europe, Middle East and Africa		10,564		12,707		15,113
Total revenue	$	152,836	$	122,633	$	125,300

Total revenue in the United States, included in Americas, was $50.2 million, $29.5 million and $28.8 million for the years ended December 31, 2019, 2018 and 2017, respectively. Total revenue in China (including Hong Kong), included in Asia Pacific, was $70.8 million, $64.3 million and $68.0 million for the years ended December 31, 2019, 2018 and 2017, respectively. No sales to countries other than the United States and China accounted for more than 10% of revenue for the years ended December 31, 2019, 2018 and 2017.

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Summary of Significant Accounting Policies - Schedule of Property and Equipment Estimated Useful Lives (Details)	12 Months Ended
	Dec. 31, 2019
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	Shorter of remaining lease term or expected useful life
Minimum | Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	3 years
Minimum | Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	2 years
Minimum | Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	3 years
Minimum | Equipment Acquired Under Finance Leases
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	3 years
Maximum | Laboratory Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	10 years
Maximum | Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	5 years
Maximum | Furniture and Fixtures
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	7 years
Maximum | Equipment Acquired Under Finance Leases
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives (Years)	7 years

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Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 35,406	$ 34,792
Less: Accumulated depreciation	(17,964)	(15,014)
Total property and equipment, net	17,442	19,778
Laboratory Equipment
Property Plant And Equipment [Line Items]
Total property and equipment, gross	15,326	14,505
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Total property and equipment, gross	4,927	4,626
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment, gross	1,138	1,138
Equipment Acquired Under Finance Leases
Property Plant And Equipment [Line Items]
Total property and equipment, gross	3,461	3,972
Total property and equipment, net	700	1,100
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment, gross	$ 10,554	$ 10,551

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Leases - Future Minimum Lease Payments Under Operating and Capital Leases (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
Operating leases, 2019	$ 3,573
Operating leases, 2020	3,340
Operating leases, 2021	3,305
Operating leases, 2022	3,193
Operating leases, 2023	3,140
Operating leases, Thereafter	9,947
Operating leases, Total minimum lease payments	26,498
Capital leases, 2019	575
Capital leases, 2020	270
Capital leases, Total minimum lease payments	845
Less: Imputed interest	(64)
Present value of capital lease obligations	781
Less: Current portion of capital lease obligations	(523)
Capital lease obligations net of current portion	$ 258

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Leases - Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Operating lease costs
Single lease costs	$ 4,170
Variable lease costs	1,623
Sublease income:
Sublease income	(1,796)
Total operating lease costs	3,997
Finance lease costs:
Amortization of right-of-use assets	433
Interest on lease liabilities	51
Total finance lease costs	$ 484

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Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive (loss)
Beginning balance at Dec. 31, 2016	$ 124,023	$ 20	$ 311,216	$ (187,203)	$ (10)
Beginning balance, shares at Dec. 31, 2016		20,336
Issuance of common stock	4,839	$ 1	4,838
Issuance of common stock, shares		637
Stock-based compensation	7,428		7,428
Net loss	(17,322)			(17,322)
Other comprehensive income (loss)	(26)				(26)
Ending balance at Dec. 31, 2017	118,942	$ 21	323,482	(204,525)	(36)
Ending balance, shares at Dec. 31, 2017		20,973
Issuance of common stock	2,828		2,828
Issuance of common stock, shares		519
Stock-based compensation	11,317		11,317
Net loss	(35,231)			(35,231)
Other comprehensive income (loss)	27				27
Ending balance at Dec. 31, 2018	97,883	$ 21	337,627	(239,756)	(9)
Ending balance, shares at Dec. 31, 2018		21,492
Issuance of common stock	9,197	$ 1	9,196
Issuance of common stock, shares		725
Stock-based compensation	18,486		18,486
Net loss	(22,987)			(22,987)
Other comprehensive income (loss)	43				43
Equity component of issuance of 2019 Notes, net of issuance costs of $1,089 (Note 7)	32,743		32,743
Premiums paid for Capped Call Transactions (Note 7)	(10,126)		(10,126)
Ending balance at Dec. 31, 2019	$ 125,239	$ 22	$ 387,926	$ (262,743)	$ 34
Ending balance, shares at Dec. 31, 2019		22,217

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Stock-Based Awards - Schedule of Stock Options Valuation Assumptions (Details) - Stock Options - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rates, minimum	1.40%	2.30%	1.80%
Risk-free interest rates, maximum	2.60%	3.10%	2.20%
Expected dividends yield	0.00%	0.00%	0.00%
Volatility, minimum	60.80%	57.70%	52.20%
Volatility, maximum	64.30%	66.10%	59.10%
Weighted-average expected term	6 years 29 days	6 years 14 days	6 years 29 days
Weighted-average fair value of options granted	$ 18.31	$ 11.85	$ 19.15

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Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 66,898	$ 17,530
Short-term investments	49,597	38,543
Accounts receivable, net of allowances of $1,281 and $551 at December 31, 2019 and 2018, respectively	23,735	18,462
Inventory	34,153	44,725
Prepaid expenses and other current assets	2,386	1,954
Total current assets	176,769	121,214
Property and equipment, net	17,442	19,778
Operating lease right-of-use assets	16,501
Other non-current assets	453	196
Goodwill	3,881	3,881
Total assets	215,046	145,069
Current liabilities:
Accounts payable	5,600	4,643
Accrued compensation and employee related benefits	5,859	7,409
Accrued liabilities	3,755	2,887
Current portion of operating lease liabilities	3,380
Current portion of restructuring liabilities	94	582
Current portion of long-term debt		5,930
Current portion of finance lease liabilities	258	523
Current portion of deferred rent		402
Current portion of deferred revenue	551	649
Total current liabilities	19,497	23,025
Long-term debt, net of current portion	50,876	17,633
Operating lease liabilities, net of current portion	18,907
Finance lease liabilities, net of current portion	1	258
Long-term liabilities — other	313	304
Long-term restructuring liabilities		487
Deferred rent, net of current portion		5,294
Deferred revenue, net of current portion	213	185
Total liabilities	89,807	47,186
Commitments and contingencies (Note 11)
Stockholders' equity:
Preferred stock, $0.001 par value — 5,000 shares authorized, no shares issued and outstanding at December 31, 2019 and 2018
Common stock, $0.001 par value — 495,000 shares authorized, 22,217 and 21,492 shares issued and outstanding at December 31, 2019 and 2018, respectively	22	21
Additional paid-in capital	387,926	337,627
Accumulated other comprehensive income (loss)	34	(9)
Accumulated deficit	(262,743)	(239,756)
Total stockholders' equity	125,239	97,883
Total liabilities and stockholders' equity	$ 215,046	$ 145,069

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Summary of Assets Measured at Fair Value on Recurring Basis

The following table presents the balances of assets measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the dates presented (in thousands):

	December 31, 2019						December 31, 2018
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	45,663	$	—	$	45,663	$	11,896	$	—	$	11,896
Total cash equivalents		45,663		—		45,663		11,896		—		11,896
Short-term investments:
U.S. government agency securities		—		32,323		32,323		—		7,482		7,482
Corporate notes and bonds		—		13,305		13,305		—		3,736		3,736
Commercial paper		—		3,969		3,969		—		9,943		9,943
Treasury bills		—		—		—		—		17,382		17,382
Total short-term investments		—		49,597		49,597		—		38,543		38,543
Total	$	45,663	$	49,597	$	95,260	$	11,896	$	38,543	$	50,439

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Net Loss Per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Net Loss Per Share

Note 15. Net Loss per Share

For the periods presented, the following table provides a reconciliation of the numerator and denominator used in computing basic and diluted net loss per share (in thousands, expect per share amounts):

	Year Ended December 31,
	2019			2018			2017
Numerator:
Net loss	$	(22,987	)	$	(35,231	)	$	(17,322	)
Denominator:
Weighted-average shares outstanding — basic and diluted		21,847			21,334			20,680
Net loss per share — basic and diluted	$	(1.05	)	$	(1.65	)	$	(0.84	)

The following outstanding options and restricted stock units and unvested shares excluded from the computation of diluted net loss per share for the periods presented because their effect would have been antidilutive (in thousands):

	Year Ended December 31,
	2019		2018		2017
Stock options and restricted stock units		3,908		3,284		2,911
Unvested shares of common stock subject to repurchase		3		20		48

Since we expect to settle the principal amount of the outstanding 2019 Notes in cash, we use the treasury stock method for calculating any potential dilutive effect of the conversion spread on diluted net income per share, if applicable. For the 2019 Notes, the conversion spread for the notes has a dilutive impact on diluted net income per share when the average market price of our common stock during each reporting period exceeds $34.55 per share. There was no conversion spread for the 2019 Notes during 2019.

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2019

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 11. Commitments and Contingencies

Indemnifications

In the normal course of business, we may enter into agreements that require us to indemnify either customers or suppliers for specific risks. While we cannot estimate our maximum exposure under these indemnification provisions, to date they have not had a material impact on our consolidated results of operations or financial condition.

Litigation

From time to time, we are subject to various legal proceedings or claims that arise in the ordinary course of business. We accrue a liability when management believes that it is both probable that a liability has been incurred and the amount of loss can be reasonably estimated. As of December 31, 2019. and 2018, we have not recorded any such liabilities. The following is a brief description of the more significant legal proceedings. Although we believe that resolving such claims, individually or in aggregate, will not have a material adverse impact on our financial statements, these matters are subject to inherent uncertainties.

Federal Securities Class Actions

On August 7, 2018, a class action complaint for violation of the federal securities laws was filed in the U.S. District Court for the Central District of California against us, our chief executive officer and chief operating officer. Captioned Schultz v. Impinj, Inc., et al, the complaint, purportedly brought on behalf of all purchasers of our common stock from May 7, 2018 through and including August 2, 2018, asserted claims that our quarterly statement filed on Form 10-Q for the first quarter of 2018 and a concurrent press release made false or misleading statements about our business prospects and financial condition. The complaint sought monetary damages, costs and expenses. On October 3, 2018, the plaintiff voluntarily dismissed this complaint.

On August 27, 2018, a second-class action complaint for violation of the federal securities laws was filed in the U.S. District Court for the Western District of Washington against us, our chief executive officer, chief operating officer and former chief financial officer. Captioned Montemarano v. Impinj, Inc., et al., the complaint, purportedly brought on behalf of all purchasers of our common stock from May 4, 2017 through and including August 2, 2018, asserts claims that we made false or misleading statements in our financial statements, press releases and conference calls during the purported class period in violation of Section 10(b) of the Securities Exchange Act of 1934, as amended, or the Securities Exchange Act. The complaint seeks monetary damages, costs and expenses.

On October 2, 2018, a third-class action complaint for violation of the federal securities laws was filed in the U.S. District Court for the Western District of Washington against us, our chief executive officer, chief operating officer and former chief financial officer. Captioned Employees’ Retirement System of the City of Baton Rouge and Parish of East Baton Rouge v. Impinj, Inc., et al., the complaint, purportedly brought on behalf of all purchasers of our common stock from November 3, 2016 through and including February 15, 2018, asserts claims that we made false or misleading statements about customer demand for our products and inventory in SEC filings, press releases and conference calls in violation of Section 10(b) of the Securities Exchange Act. The complaint seeks monetary damages, costs and expenses.

On January 14, 2019, the U.S. District Court for the Western District of Washington consolidated the Montemarano and Baton Rouge actions and appointed the Employees’ Retirement System of the City of Baton Rouge and Parish of East Baton Rouge as lead plaintiff. On February 13, 2019, lead plaintiff filed a consolidated amended complaint. The consolidated amended complaint alleges that from July 21, 2016 through February 15, 2018, we made false or misleading statements about customer demand and the capability of our products and platform in violation of Section 10(b) of the Securities Exchange Act.

On March 19, 2019, we filed a motion to dismiss the consolidated amended complaint, and on October 4, 2019, the court entered an order granting in part and denying in part the motion. The court dismissed the Section 10(b) claim against our President and chief operating officer, dismissed product capability-related allegations against our former chief financial officer, and dismissed allegations that defendants made false or misleading statements concerning increasing demand prior to the first quarter of 2017. The court denied the motion as to all other claims and defendants. A trial date has been set for February 1, 2021.

New York State Securities Class Action

On January 31, 2019, a fourth-class action complaint for violation of the federal securities laws was filed in the Supreme Court of the State of New York for the County of New York against us, our chief executive officer, chief operating officer, former chief financial officer, members of our board of directors and the underwriters of our July 2016 initial public stock offering, or IPO, and December 2016 secondary public offering, or SPO. Captioned Plymouth County Retirement System v. Impinj, Inc., et al., the complaint, purportedly brought on behalf of purchasers of our stock pursuant to or traceable to our IPO and SPO, alleges that we made false or misleading statements in the registration statements and prospectuses in those offerings concerning demand for our products and inventory in violation of Section 11 of the Securities Act of 1933. On April 9, 2019, the New York Supreme Court entered an order staying the action and requiring the parties to update the court every 90 days as to the status of the pending federal securities class actions discussed above.

Shareholder Derivative Actions

On October 26, 2018, two shareholder derivative actions were filed in the U.S. District Court for the District of Delaware against our chief executive officer, chief operating officer, former chief financial officer and certain of our directors. We are a nominal defendant. On November 8, 2018, a third shareholder derivative action was filed in this same court against the same defendants. Captioned Weiss v. Diorio, et al., Fotouhi v. Diorio, et al., and De la Fuente v. Diorio, et al., the derivative complaints, purportedly brought on behalf of us, allege that the defendants breached their fiduciary duties to us and allegedly made false or misleading statements and omissions of material fact in violation of Section 14(a) of the Securities Exchange Act regarding our business and operations. The derivative actions include claims for, among other things, unspecified damages in favor of us, corporate actions to purportedly improve our corporate governance, and an award of costs and expenses to the derivative plaintiffs, including attorneys’ fees. On January 28, 2019, the Delaware federal court entered a stipulated order that stayed these derivative actions until resolution of the pending federal securities class actions described above.

Patent Infringement Claims and Counterclaims

On June 6, 2019, we filed a patent infringement lawsuit against NXP USA, Inc., a Delaware corporation and subsidiary of NXP Semiconductors N.V., or NXP, in the U.S. District Court for the Northern District of California. Our complaint alleges that certain NXP integrated circuit products infringed and continue to infringe numerous U.S. patents owned by us. We are seeking, among other things, past damages, including lost profits, and no less than a reasonable royalty; enhanced damages for willful infringement; and reasonable attorneys’ fees and costs for infringement of each of the asserted patents. We are also seeking an injunction against NXP making, selling, using, offering for sale or importing the RAIN RFID integrated circuit product NXP introduced in 2017. Defendants responded to our complaint on September 30, 2019 citing numerous defenses including denying infringement, claiming our asserted patents are invalid, and that the infringed patents were licensed on a royalty-free basis under Impinj’s commitments to GS1 EPCglobal.

On October 4, 2019, NXP USA, Inc. and NXP, filed a patent infringement lawsuit against us in the U.S. District Court for the District of Delaware. The complaint alleges that certain of our products infringed and continue to infringe numerous U.S. patents owned by NXP or NXP USA, Inc. The plaintiffs are seeking, among other things, past damages adequate to compensate them for our alleged infringement of each of the patents-in-suit, and reasonable attorneys’ fees and costs. They are also seeking an injunction against us, enjoining continuing acts of infringement of the patents-in-suit. As of the date of this report, there is no court date set.

Obligations with Third-Party Manufacturers

We manufacture products with third-party manufacturers. We are committed to purchase $17.3 million of inventory as of December 31, 2019.

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Long-term Debt

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Long-term Debt

Note 7. Long-term debt

Convertible Senior Notes

In December 2019, we issued convertible senior notes due 2026, or the 2019 Notes, in an aggregate principal amount of $86.3 million. The 2019 Notes are our senior unsecured obligations and are governed by the indenture for the 2019 Notes. The 2019 Notes bear interest at a fixed rate of 2.00% per year, payable semi-annually in arrears on June 15 and December 15 of each year, beginning on June 15, 2020. Upon conversion, the 2019 Notes will be convertible into cash, shares of our common stock or a combination thereof, at our election. The 2019 Notes will mature on December 15, 2026, unless earlier repurchased, redeemed, or converted in accordance with the terms of the indenture.

The net proceeds from issuing the 2019 Notes were approximately $83.5 million after deducting fees and expenses. We used the net proceeds from issuing the 2019 Notes to pay the cost of the capped call transactions and repay our senior credit facility, both of which are described further below.

The 2019 Notes are convertible at an initial conversion rate of 28.9415 shares of our common stock per $1,000 principal amount of the 2019 Notes, which is equal to an initial conversion price of approximately $34.55 per share of our common stock, subject to adjustment under certain circumstances in accordance with the indenture. Prior to the close of business on the business day immediately preceding September 15, 2026, holders of the 2019 Notes may convert all or a portion of their 2019 Notes under the following circumstances:

• during any fiscal quarter commencing after the fiscal quarter ending on March 31, 2020 (and only during such fiscal quarter), if the last reported sale price of our common stock, for at least 20 trading days (whether or not consecutive) during a period of 30 consecutive trading days ending on, and including, the last trading day of the immediately preceding fiscal quarter is greater than or equal to 130% of the conversion price on each applicable trading day; 

• during the five business day period after any five consecutive trading day period in which the trading price per $1,000 principal amount of the 2019 Notes for each trading day was less than 98% of the product of the last reported sale price of our common stock and the conversion rate on each such trading day;

• prior to the close of business on the second scheduled trading day immediately preceding the redemption date if we call the 2019 Notes for redemption; or

• upon the occurrence of specified corporate events, as described in the Indenture.

On or after September 15, 2026, until the close of business on the second scheduled trading day immediately preceding the maturity date, holders may convert all or any portion of the 2019 Notes, in multiples of $1,000 principal amount, at the option of the holder regardless of the foregoing circumstances.

We may redeem the 2019 Notes for cash, at our option, on or after December 20, 2023, if the last reported sale price of our common stock has been at least 130% of the conversion price at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period at a redemption price equal to 100% of the principal amount of the 2019 Notes being redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date.

Holders of the 2019 Notes who convert their 2019 Notes in connection with certain corporate events that constitute a make-whole fundamental change (as defined in the indenture) are, under certain circumstances, entitled to an increase in the conversion rate. Additionally in the event of a corporate event constituting a fundamental change (as defined in the indenture), holders of the 2019 Notes may require us to repurchase all or a portion of their 2019 Notes at a repurchase price equal to 100% of the principal amount of the 2019 Notes being repurchased, plus any accrued and unpaid interest to, but excluding, the repurchase date.

Certain convertible debt instruments that may be settled in cash on conversion are required to be separated into a liability and an equity component. The total proceeds are first allocated to the liability component based on the fair value of a similar debt instrument without the conversion option. The total proceeds that remain are allocated to the equity component and recognized in additional paid-in capital.

Accordingly, we separated the 2019 Notes into a liability and an equity component. We determined the fair value of the liability component to be $52.5 million calculated as the present value of future cash flows discounted at the borrowing rate for a similar nonconvertible debt instrument based on the expected term. The borrowing rate was determined to be 9.90% based on the market rates for nonconvertible debt instruments issued by other companies with publicly available credit ratings considered to be comparable to us. The excess of the principal amount of the 2019 Notes over the initial carrying amount of the liability component was recognized as a debt discount of $33.8 million and is being amortized to interest expense over the expected term of the 2019 Notes using the effective interest rate method. The equity component of $33.8 million, calculated as the difference between the total proceeds of $86.3 million and the initial carrying amount of the liability component, was recorded in additional paid-in capital. The equity component is not remeasured as long as it continues to meet the conditions for equity classification.

As of December 31, 2019, the 2019 Notes were not yet convertible and the “if-converted value” did not exceed the remaining principal amount of the 2019 Notes.

Total issuance costs of $2.8 million related to the 2019 Notes were allocated between liability and equity in the same proportion as the allocation of the total proceeds to the liability and equity components. Issuance costs attributable to the liability component of $1.7 million are being amortized to interest expense over the respective term of the 2019 Notes using the effective interest rate method. The issuance costs attributable to the equity component of $1.1 million were netted against the respective equity component in additional paid-in capital.

The effective interest rate on the liability component of the 2019 Notes for the year ended December 31, 2019 is 10.21%. Accrued interest related to the 2019 Notes as of December 31, 2019 was not material. Accrued interest is recorded in accrued liabilities in our consolidated balance sheet. Interest expense related to the 2019 Notes for the year ended December 31, 2019 was not material.

The estimated fair value of the 2019 Notes was $87.0 million as of December 31, 2019, which was determined through consideration of quoted market prices. The fair value is classified as Level 2, as defined in Note 2.

The following table presents the outstanding principal amount and carrying value of the 2019 Notes as of the date presented (in thousands):

	December 31, 2019
Outstanding principal amount		86,250
Unamortized debt discount and debt issuance costs		(35,374	)
Carrying value		50,876

In connection with the issuance of the 2019 Notes, we entered into privately negotiated capped call transactions with certain financial counterparties. The capped call transactions are generally designed to reduce potential dilution to our common stock upon any conversion or settlement of the 2019 Notes or offset any cash payments we are required to make in excess of the principal amount upon conversion of the 2019 Notes, as the case may be, with such reduction or offset subject to a cap based on the cap price. If, however, the market price per share of our common stock exceeds the cap price of the capped call transactions, there would be dilution and/or there would not be an offset of such potential cash payments, in each case, to the extent that the then-market price per share of our common stock exceeds the cap price. The cap price of the capped call transactions is initially $54.20 per share, which represents a premium of 100% over the last reported sale price of our common stock of $27.10 per share on December 11, 2019, and is subject to certain adjustments under the terms of the capped call transactions. The capped call transactions expire over 40 consecutive scheduled trading days ending on December 11, 2026.

Thecapped call transactions meet the criteria for classification in equity, are not accounted for as derivatives, and are not remeasured each reporting period. We paid $10.1 million for the capped call transactions, which is included as a reduction to additional paid-in-capital within shareholders’ equity.

Senior Credit Facility

On April 26, 2019, we amended our senior credit facility to, among other things, extend the maturity date of the $25.0 million revolving credit facility, with a $5.0 million letter of credit sub-facility, to May 1, 2021 and refinance the existing term loan and equipment advance with a new $23.5 million term loan. The term loan will amortize over 36 months, beginning on May 1, 2020, following an initial 12-month interest-only period, and mature on April 1, 2023. We may prepay the term loan at any time, subject to a prepayment fee equal to 2.0% of the outstanding principal amount if prepaid on or before April 26, 2020, or 1.0% of the outstanding principal amount if prepaid after April 26, 2020, but on or before April 26, 2021. There were no changes to the term loan interest rates or financial covenants as a result of this amendment.

On December 16, 2019, we used $24.0 million of the net proceeds from the 2019 Notes to repay in full our senior credit facility, which was terminated pursuant to its terms. In connection with this repayment, we recorded $576,000 of loss on debt extinguishment, comprised of $470,000 prepayment penalty and $106,000 write-off of unamortized debt issuance costs. We also paid accrued interest on our senior credit facility, which was not material.

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Fair Value Measurements

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note3. Fair Value Measurements

The following table presents the balances of assets measured at fair value on a recurring basis, by level within the fair value hierarchy, as of the dates presented (in thousands):

	December 31, 2019						December 31, 2018
	Level 1		Level 2		Total		Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	45,663	$	—	$	45,663	$	11,896	$	—	$	11,896
Total cash equivalents		45,663		—		45,663		11,896		—		11,896
Short-term investments:
U.S. government agency securities		—		32,323		32,323		—		7,482		7,482
Corporate notes and bonds		—		13,305		13,305		—		3,736		3,736
Commercial paper		—		3,969		3,969		—		9,943		9,943
Treasury bills		—		—		—		—		17,382		17,382
Total short-term investments		—		49,597		49,597		—		38,543		38,543
Total	$	45,663	$	49,597	$	95,260	$	11,896	$	38,543	$	50,439

We did not have any Level 3 assets as of December 31, 2019 or 2018. There were no liabilities measured at fair value as of December 31, 2019 or 2018. See Note 7 for the carrying amount and estimated fair value of our convertible senior notes due in 2026.

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Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2019

Statement Of Stockholders Equity [Abstract]

Summary of Shares of Common Stock Reserved for Future Issuance

The following shares of common stock have been reserved for future issuance as of the date presented (in thousands):

	December 31, 2019
Option awards outstanding		3,262
Restricted stock units outstanding		761
Common stock reserved under equity incentive plans		1,246
Common stock reserved under employee stock purchase plan		490
Total		5,759

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Deferred Revenue (Tables)

12 Months Ended

Dec. 31, 2019

Deferred Revenue Disclosure [Abstract]

Summary of Changes in Deferred Revenue

The following table presents the changes in deferred revenue for the periods presented (in thousands):

	Year Ended December 31,
	2019			2018
Balance at beginning of period	$	834		$	1,215
Deferral of revenue		718			587
Recognition of deferred revenue		(788	)		(968	)
Balance at end of period	$	764		$	834

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Stockholders' Equity - Additional Information (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Stockholders Equity Note [Abstract]
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, shares authorized	495,000,000	495,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, voting rights	Each holder of the common stock is entitled to one vote per common share

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Income Taxes - Total Balance of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Balance at beginning of period	$ 3,159	$ 2,906	$ 2,597
Gross increase to tax positions in prior periods			2
Gross increase to tax positions in current periods	269	253	307
Balance at end of period	$ 3,428	$ 3,159	$ 2,906

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Net Loss Per Share - Additional Information (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2019 $ / shares shares
2019 Convertible Senior Notes due 2026
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Debt instrument, conversion spread | shares	0
Minimum
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Debt conversion average market price of stock per share | $ / shares	$ 34.55

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Commitments and Contingencies - Additional Information (Details) $ in Millions	Dec. 31, 2019 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Inventory purchase commitment, amount	$ 17.3

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Deferred Revenue - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Deferred Revenue Disclosure [Abstract]
Recognition of deferred revenue	$ 0.6	$ 0.9

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Net Loss Per Share - Reconciliation of the Numerator and Denominator used in Computing Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Numerator:
Net loss	$ (22,987)	$ (35,231)	$ (17,322)
Denominator:
Weighted-average shares outstanding — basic and diluted	21,847	21,334	20,680
Net loss per share — basic and diluted	$ (1.05)	$ (1.65)	$ (0.84)