# EDGAR Filing Document

**Accession Number:** 0000833640
**File Stem:** 0000833640-26-000037
**Filing Date:** 2026-2
**Character Count:** 407971
**Document Hash:** fb55ae122898fefbc40ab677f5ceed62
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000833640-26-000037.hdr.sgml**: 20260206

**ACCESSION NUMBER**: 0000833640-26-000037

**CONFORMED SUBMISSION TYPE**: 10-K

**PUBLIC DOCUMENT COUNT**: 110

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260206

**DATE AS OF CHANGE**: 20260206

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** POWER INTEGRATIONS INC
- **CENTRAL INDEX KEY:** 0000833640
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 943065014
- **STATE OF INCORPORATION:** CA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 10-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-23441
- **FILM NUMBER:** 26607868

**BUSINESS ADDRESS:**
- **STREET 1:** 5245 HELLYER AVE
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95138
- **BUSINESS PHONE:** 4084149200

**MAIL ADDRESS:**
- **STREET 1:** 5245 HELLYER AVE
- **CITY:** SAN JOSE
- **STATE:** CA
- **ZIP:** 95138

?xml version='1.0' encoding='ASCII'? POWER INTEGRATIONS, INC._December 31, 2025

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**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 10-K**

(Mark One)

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

For the fiscal year ended December 31, 2025

**or**

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

For the transition period from to

**Commission File Number 000-23441**

**POWER INTEGRATIONS, INC.**

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

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| | |
|:---|:---|
| **Delaware** | **94-3065014** |
| (State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.) |

---

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| | | |
|:---|:---|:---|
| **5245 Hellyer Avenue** | **5245 Hellyer Avenue** |  |
| **San Jose,** | **California** | **95138-1002** |
| (Address of principal executive offices) | (Address of principal executive offices) | (Zip code) |

---

**(408) 414-9200**

(Registrant's telephone number, including area code)

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

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| | | |
|:---|:---|:---|
| **Title of Each Class** | **Trading Symbol(s)** | **Name of Each Exchange on Which Registered** |
| Common Stock | POWI | The Nasdaq Global Select Market |

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**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 ⌧&nbsp;&nbsp;&nbsp;&nbsp;No ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ☐&nbsp;&nbsp;&nbsp;&nbsp;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 ⌧&nbsp;&nbsp;&nbsp;&nbsp;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 definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act:

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| | | | |
|:---|:---|:---|:---|
| Large Accelerated Filer | ⌧ | Accelerated Filer  | ☐ |
| Non-accelerated Filer&nbsp;&nbsp;&nbsp;&nbsp; | ☐ | 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 has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ⌧

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐

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

The aggregate market value of registrant's voting and non-voting common stock held by non-affiliates of registrant on June 28, 2025, the last business day of the registrant's most recently completed second fiscal quarter, was approximately $2.3 billion, based upon the closing sale price of the common stock as reported on The Nasdaq Global Select Market. Shares of common stock held by each officer and director have been excluded in that such persons may be deemed to be affiliates. This determination of affiliate status is not a conclusive determination for other purposes.

As of February 2, 2026, 55,504 thousand shares of the registrant's common stock, $0.001 par value, were issued and outstanding.

**DOCUMENTS INCORPORATED BY REFERENCE**

The information required by Part III of this report, to the extent not set forth herein, is incorporated by reference from the Registrant's definitive proxy statement relating to the 2026 annual meeting of stockholders, which definitive proxy statement will be filed with the Securities and Exchange Commission within 120 days after the fiscal year to which this Report relates.

------

[**Table of Contents**](#TOC)

#### POWER INTEGRATIONS, INC.
**TABLE OF CONTENTS**

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| | | |
|:---|:---|:---|
|  |  | **Page** |
|  | [**PART I.**](#PARTI_41530) |  |
| [ITEM 1.](#Item1Business_584739) | [BUSINESS](#Item1Business_584739) | 4 |
| [ITEM 1A.](#Item1ARiskFactors_276509) | [RISK FACTORS](#Item1ARiskFactors_276509) | 13 |
| [ITEM 1B.](#Item1BUnresolvedStaffComments_833889) | [UNRESOLVED STAFF COMMENTS](#Item1BUnresolvedStaffComments_833889) | 24 |
| [ITEM 1C.](#Item1CCYBERSECURITY) | [CYBERSECURITY](#Item1CCYBERSECURITY) | 24 |
| [ITEM 2.](#Item2Properties_711615) | [PROPERTIES](#Item2Properties_711615) | 26 |
| [ITEM 3.](#Item3LegalProceedings_132665) | [LEGAL PROCEEDINGS](#Item3LegalProceedings_132665) | 26 |
| [ITEM 4.](#Item4MineSafetyDisclosures_464792) | [MINE SAFETY DISCLOSURES](#Item4MineSafetyDisclosures_464792) | 26 |
|  | [**PART II.**](#PARTII_859839) |  |
| [ITEM 5.](#Item5MarketforRegistrantsCommonEquityRel) | [MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES](#Item5MarketforRegistrantsCommonEquityRel) | 27 |
| [ITEM 6.](#Item6Reserved) | [\[RESERVED\]](#Item6Reserved)  | 28 |
| [ITEM 7.](#Item7ManagementsDiscussionandAnalysisofF) | [MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS](#Item7ManagementsDiscussionandAnalysisofF) | 29 |
| [ITEM 7A.](#Item7ManagementsDiscussionandAnalysisofF) | [QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK](#Item7AQuantitativeandQualitativeDisclosu) | 36 |
| [ITEM 8.](#Item8FinancialStatementsandSupplementary) | [FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA](#Item8FinancialStatementsandSupplementary) | 38 |
| [ITEM 9.](#Item9ChangesinandDisagreementswithAccoun) | [CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE](#Item9ChangesinandDisagreementswithAccoun) | 71 |
| [ITEM 9A.](#Item9AControlsandProcedures_715348) | [CONTROLS AND PROCEDURES](#Item9AControlsandProcedures_715348) | 71 |
| [ITEM 9B.](#Item9BOtherInformation_889443) | [OTHER INFORMATION](#Item9BOtherInformation_889443) | 73 |
| [ITEM 9C.](#Item9BOtherInformation_889443) | [DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS](#_Item_9C._Disclosure) | 73 |
|  | [**PART III.**](#PARTIII_930894) |  |
| [ITEM 10.](#Item10DirectorsExecutiveOfficersandCorpo) | [DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE](#Item10DirectorsExecutiveOfficersandCorpo) | 74 |
| [ITEM 11.](#Item11ExecutiveCompensation_830171) | [EXECUTIVE COMPENSATION](#Item11ExecutiveCompensation_830171) | 74 |
| [ITEM 12.](#Item12SecurityOwnershipofCertainBenefici) | [SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS](#Item12SecurityOwnershipofCertainBenefici) | 74 |
| [ITEM 13.](#Item13CertainRelationshipsandRelatedTran) | [CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE](#Item13CertainRelationshipsandRelatedTran) | 74 |
| [ITEM 14.](#Item14PrincipalAccountingFeesandServices) | [PRINCIPAL ACCOUNTING FEES AND SERVICES](#Item14PrincipalAccountingFeesandServices) | 74 |
|  | [**PART IV.**](#PARTIV_790336) |  |
| [ITEM 15.](#Item15ExhibitsFinancialStatementSchedule) | [EXHIBITS AND FINANCIAL STATEMENT SCHEDULES](#Item15ExhibitsFinancialStatementSchedule) | 75 |
| [ITEM 16.](#Item16Form10KSummary_675227) | [FORM 10-K SUMMARY](#Item16Form10KSummary_675227) | 84 |
| [SIGNATURES](#SIGNATURES_386803) | [SIGNATURES](#SIGNATURES_386803) | 85 |

---

[**Table of Contents**](#TOC)

#### Cautionary Note Regarding Forward-Looking Statements
This Annual Report on Form 10-K includes a number of forward-looking statements that involve many risks and uncertainties. Forward-looking statements are identified by the use of the words "would," "could," "will," "may," "expect," "believe," "should," "anticipate," "if," "future," "intend," "plan," "estimate," "potential," "target," "seek" or "continue" and similar words and phrases, including the negatives of these terms, or other variations of these terms, that denote future events. These statements reflect our current views with respect to future events and our potential financial performance and are subject to risks and uncertainties that could cause our actual results and financial position to differ materially and/or adversely from what is projected or implied in any forward-looking statements included in this Form 10-K. These factors include, but are not limited to: changes in global trade policy such as tariffs, that could result in reduced demand for end products that incorporate our products, which could have a material adverse effect on our revenue and operating results; if demand for our products declines in our major end markets, our net revenue will decline; we do not have long-term contracts with any of our customers and if they fail to place orders for our products, or if they cancel or reschedule orders, our operating results and our business may suffer; our products are sold through distributors, which limits our direct interaction with our end customers, therefore reducing our ability to forecast sales and increasing the complexity of our business; if our products do not penetrate additional markets, our business will not grow as we expect; intense competition in the high-voltage power supply industry may lead to a decrease in our average selling price and reduced sales volume of our products; we depend on third-party suppliers to provide us with wafers for our products, and if they fail to provide us sufficient quantities of wafers, our business may suffer; if we are unable to adequately protect or enforce our intellectual property rights, we could lose market share, incur costly litigation expenses, suffer incremental price erosion or lose valuable assets, any of which could harm our operations and negatively impact our profitability; and the other risk factors described in Part I, Item 1A, "Risk Factors" of this Annual Report on Form 10-K. We make these forward-looking statements based upon information available on the date of this Form 10-K, and expressly disclaim any obligation to update or alter any forward-looking statements, whether as a result of new information or otherwise, except as required by laws. In evaluating these statements, you should specifically consider the risks described under Part I, Item 1A, "Risk Factors," Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations" and elsewhere in this Annual Report on Form 10-K.

In addition, statements that "we believe" and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this Annual Report on Form 10-K, and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely upon these statements.

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#### PART I

#### Item 1. Business.

#### Overview
We design, develop and market analog and mixed-signal integrated circuits ("ICs") and other electronic components and circuitry used in high-voltage power conversion. Our products are used in power converters that convert electricity from a high-voltage source to the type of power required for a specified downstream use. In most cases, this conversion entails, among other functions, converting alternating current ("AC") to direct current ("DC") or vice versa, reducing or increasing the voltage, and regulating the output voltage and/or current according to the customer's specifications.

A large percentage of our products are ICs used in AC-DC power supplies, which convert the high-voltage AC from a wall outlet to the low-voltage DC required by most electronic devices. Power supplies incorporating our products are used with all manner of electronic products including industrial controls, "smart" utility meters, appliances, air conditioners, battery-powered tools, building-automation, or "internet-of-things" applications such as networked thermostats and security devices, and mobile devices such as smartphones, tablets and notebook computers. Variations of our power-supply ICs are used for high-voltage power conversion in electric vehicles ("EVs"). We also supply high-voltage LED drivers, which are AC-DC ICs specifically designed for lighting applications that utilize light-emitting diodes, and motor-driver ICs for brushless DC ("BLDC") motors used in consumer appliances, HVAC systems, ceiling fans and a variety of industrial applications.

We also offer high-voltage gate drivers—either standalone ICs or circuit boards containing ICs, electrical isolation components and other circuitry—used to operate high-voltage switches such as insulated-gate bipolar transistors ("IGBTs") and silicon-carbide ("SiC") MOSFETs. These combinations of switches and drivers are used for power conversion in high-power applications (i.e., power levels ranging from approximately 100 kilowatts up to gigawatts) such as industrial motors, solar- and wind-power systems, electric locomotives, EVs and high-voltage DC transmission systems.

Our power-conversion products are distinguished by their "system-level" nature; that is, they incorporate into a single product numerous elements of a power-conversion system including a high-voltage transistor, drivers, advanced control circuitry and, in some cases, a communication link connecting the primary (i.e., input) and secondary (i.e., output) sides of the power converter while maintaining safety isolation to protect the end user from exposure to high voltage. Alternatively, a power converter can be designed and assembled using discrete components purchased from a variety of suppliers.

Our system-level products offer a number of important benefits compared with discrete designs, including: reduced design complexity; smaller size; lower component count, which in turn results in higher reliability and easier sourcing of components; reduced time-to-market; and more efficient use of engineering resources. Our products also reduce the energy consumption of power converters during normal use and in "standby" operation, when the end product is not in use. In addition to the environmental and economic benefits of reduced energy usage, our energy-saving technologies provide a number of benefits to our customers; these include helping them meet the increasingly stringent efficiency standards now in effect for many electronic products, and enabling the elimination of bulky, costly heatsinks used to dissipate the heat produced by wasted electricity. By reducing component count, circuit-board size and the need for heatsinks, our products also contribute to a reduction in materials usage and electronic waste.

While the size of our addressable market fluctuates with changes in macroeconomic and industry conditions, the market has generally exhibited a modest growth rate over time as growth in the unit volume of power converters has been offset to a large degree by reductions in the average selling price of components in this market. Therefore, the growth of our business depends largely on increasing our penetration of the markets that we serve, creating value for our customers and on further expanding our addressable market. Our growth strategy includes the following elements:

● *Increase our penetration of the markets we serve.* We currently address AC-DC applications with power outputs up to approximately 500 watts, gate-driver applications ranging from 100 kilowatts up to gigawatts, and motor-drive applications up to approximately one horsepower. Through our research and development efforts, we seek to introduce more advanced products for these markets offering higher levels of integration and performance compared to earlier products. We also continue to expand our offerings of technical documentation and design-support tools and services to help customers use our products. These tools and services include our PI Expert™ design software, our transformer-sample service and our PowerPros ℠ , a live online video support service that enables power-supply designers to talk directly with members of our applications engineering team from anywhere in the world.

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● *Increase the size of our addressable market.* Prior to 2010 our addressable market consisted of AC-DC applications with up to about 50 watts of output. Since then, we have expanded our served available market ("SAM") to approximately $5 billion through a variety of means. These include the introduction of products that enable us to address higher-power AC-DC applications (such as our Hiper™ product families), the introduction of LED-driver products, our entry into the gate-driver market and the introduction of our BridgeSwitch™ motor-driver ICs for BLDC motors. We have also introduced products targeting the EV market and expect automotive applications to become a significant portion of our SAM over time.

Also contributing to our SAM expansion has been the emergence of new applications within the power ranges that our products can address. For example, applications such as "smart" utility meters, battery-powered lawn equipment and bicycles, and USB power receptacles (often installed alongside traditional AC wall outlets) can incorporate our products. The increased use of connectivity, LED lighting and other power-consuming electronic features in consumer appliances has also enhanced our SAM.

We have also expanded our SAM through the development of technologies and architectures that increase the value (and therefore the average selling prices) of our products. For example, our InnoSwitch™ ICs integrate circuitry from the secondary, or low-voltage, side of AC-DC power supplies, whereas earlier product families integrated circuitry only on the primary, or high-voltage side. Our InnoMux™ IC families provide up to three DC outputs, eliminating the need for additional power-management circuitry in certain end products requiring multiple voltages while significantly increasing efficiency. Our proprietary PowiGaN™ high-voltage transistor technology, introduced in 2019, increases the value of our ICs by replacing silicon transistors with higher-performance gallium-nitride ("GaN") switches, and also enables us to address a wider range of applications.

● *Leverage the performance benefits of our proprietary GaN technology.* In 2019 we began incorporating our proprietary PowiGaN™ transistors in some of our products, enabling a higher level of energy efficiency than ICs with silicon transistors. Since then, we have introduced a variety of new products utilizing GaN technology and developed new generations of our GaN technology capable of supporting voltages as high as 1700 volts.

We are developing additional products incorporating GaN transistors, which we believe will enable us to address higher-power applications than we address with our current range of products, and further expand our SAM as discussed above. We expect such applications to include power supplies used in data centers delivering artificial intelligence ("AI") services, in communications network infrastructure equipment and in onboard-charging circuitry for EVs, among others.

Additionally, we are developing GaN technologies capable of supporting higher power output than today's GaN devices, with an aim of developing products to address power-switching modules in EV drivetrains, which currently incorporate SiC and IGBT modules. In July 2024 we acquired the assets of Odyssey Semiconductor, a developer of vertical GaN technology, in an effort to accelerate our development of higher-power GaN devices. We believe the development of such technologies will take several years to complete.

● *Capitalize on efforts to reduce carbon emissions by providing products that contribute to improved energy efficiency and increased use of renewable energy.* In its 2019 World Energy Outlook, the International Energy Agency estimated that more than two-thirds of the reduction in carbon-dioxide ("CO2") emissions needed to achieve the "Sustainable Development Scenario" of the United Nations Sustainable Development Agenda is to come from improved energy efficiency and increased use of renewable energy. Energy savings enabled by our products help our customers comply with regulations that seek to curb energy consumption in support of reducing CO2 emissions. For example: our EcoSmart™ technology drastically reduces the amount of energy consumed by electronic products when they are plugged in but not in use; our PowiGaN™ transistors reduce energy consumption compared to silicon transistors; and our BridgeSwitch™ motor-driver ICs provide highly efficient power conversion for BLDC motors in appliances and industrial applications. Also, our gate-driver products are critical components in energy-efficient DC motor drives, solar- and wind-power systems, efficient high-voltage DC transmission systems (including transmission of energy from renewable energy installations to the power grid), and low-emissions transportation applications such as electric locomotives.

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#### Background – Our Highly Integrated Approach to High-Voltage Power Conversion
Virtually every electronic device that plugs into a wall socket requires a power supply to convert the high-voltage alternating current provided by electric utilities into the low-voltage direct current required by most electronic devices. Until approximately 1970, AC-DC power supplies were generally in the form of line-frequency, or linear, transformers. These devices, consisting primarily of copper wire wound around an iron core, tend to be bulky and heavy, and typically waste a substantial amount of electricity. In the 1970s, the availability of high-voltage discrete semiconductors enabled the development of a new generation of power supplies known as switched-mode power supplies ("SMPS"). While SMPS are generally smaller, lighter-weight and more energy-efficient than linear transformers, early versions designed with discrete components were highly complex, containing numerous components and requiring a high level of analog design expertise.

In high-power systems such as industrial motor drives, electric locomotives and renewable-energy systems, power conversion is typically performed using arrays of high-power silicon or silicon-carbide transistors known as IGBT modules or SiC modules; these modules are operated by electronic circuitry known as gate drivers, whose function is to ensure accurate, safe and reliable operation of the IGBT modules. Like discrete power supplies, discrete gate drivers tend to be highly complex, requiring a large number of components and a great deal of design expertise.

In 1994 we introduced TOPSwitch™, the industry's first cost-effective high-voltage IC for switched-mode AC-DC power supplies. We have since introduced a range of other product families, expanding the range of power-supply applications we can serve and enhancing our competitiveness in applications we already addressed. We have further expanded our addressable market with the addition of high-voltage gate drivers and motor-driver ICs for BLDC motors.

Our products drastically reduce the complexity and component count of power converters compared to typical discrete designs by integrating many of the functions otherwise performed by numerous discrete electronic components, and by eliminating (or reducing the size and cost of) additional components through innovative system design. As a result, our products enable power converters to have superior features and functionality at a total cost equal to or lower than that of many competing alternatives. Our products offer the following key benefits:

● *Fewer Components, Reduced Size and Higher Reliability* 

Our highly integrated ICs and gate drivers enable designs with far fewer components than comparable discrete designs. This reduction in component count enhances reliability and efficiency, reduces size, and results in lower manufacturing costs for our customers.

● *Reduced Time-to-Market, Enhanced Manufacturability* 

Because our products eliminate much of the complexity associated with the design of power converters, designs can typically be completed in less time, resulting in more efficient use of customers' design resources and shorter time-to-market for new designs. The lower component count and reduced complexity enabled by our products also makes designs more suitable for high-volume manufacturing. We also provide extensive hands-on design support as well as online design tools, such as our PI Expert design software, that further reduce time-to-market and product development risks.

● *Energy Efficiency* 

Our EcoSmart™ technology improves the energy efficiency of electronic devices during normal operation as well as standby and "no-load" conditions. This technology enables manufacturers to cost-effectively meet the growing demand for energy-efficient products, and to comply with increasingly stringent energy-efficiency requirements. Our proprietary GaN transistor technology offers substantially higher levels of active-mode efficiency compared to traditional silicon switches, while our BridgeSwitch™ motor-driver ICs not only minimize power waste but also eliminate the need for heatsinks in many applications, which in turn reduces cost and weight.

● *Wide Power Range and Scalability* 

Products in our current IC families can address AC-DC power supplies with output power up to approximately 500 watts as well as some high-voltage DC-DC applications; our high-voltage gate drivers are used in applications with power levels ranging from approximately 100 kilowatts to gigawatts, while our motor-driver ICs address BLDC applications up to about one horsepower. Within each of our product families, designers can scale up or down in power to address a wide range of designs with minimal design effort.

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#### Products
Below is a brief description of our products:

● *AC-DC power conversion products* 

TOPSwitch™, our first commercially successful product family, was introduced in 1994. Since then, we have introduced a wide range of products (such as our TinySwitch™, LinkSwitch™ and Hiper™ families) to increase the level of integration and improve upon the functionality of the original TOPSwitch™, and to broaden the range of power levels we can address.

In 2014 we introduced our InnoSwitch™ product family, the first power-supply ICs to combine primary, secondary and feedback circuits into a single package. These ICs employ a proprietary technology known as FluxLink™ to enable precise control without the need for optical components, which tend to add cost and diminish the reliability of power supplies. In 2019 we began offering InnoSwitch™ ICs with more-efficient GaN transistors rather than silicon transistors. In 2023 we announced new versions of our InnoSwitch products incorporating GaN transistors with higher voltage ratings of 900 volts and 1250 volts; earlier GaN products feature transistors rated at 750 volts. In 2019 we introduced InnoMux™ ICs, which provide up to three DC outputs, eliminating the need for additional power-management circuitry in certain end products requiring multiple voltages while significantly increasing efficiency. In 2024 we introduced InnoMux-2 products, featuring GaN transistors rated at 1700 volts.

This portfolio of power-conversion products generally addresses power supplies up to about 500 watts of output. This market consists of an extremely broad range of applications including consumer appliances, utility meters, LCD monitors, tablets, smartphones, computers, TVs, and numerous other consumer and industrial applications, as well as LED lighting. We also now offer automotive-qualified versions of certain products, such as InnoSwitch™ ICs, for use in EVs.

● *High-voltage gate drivers* 

We offer a range of high-voltage gate-driver products sold primarily under the SCALE™ and SCALE™-2 product-family names. These products are fully assembled circuit boards incorporating multiple ICs, electrical isolation components and other circuitry. We offer both ready-to-operate "plug-and-play" drivers designed specifically for use with particular IGBT modules, as well as "driver cores," which provide more basic driver functionality that customers can customize to their own specifications after purchase. In 2016 we introduced the SCALE-iDriver™ family of standalone ICs, which enables us to address applications ranging from a few kilowatts up to about 100 kilowatts, whereas previously our sales of high-power products were primarily for applications above 100 kilowatts. In 2020 we introduced an automotive-qualified version of SCALE-iDriver™ suitable for use in powertrain and charging applications for electric vehicles.

● *Motor-driver products* 

The BridgeSwitch™ family of products, introduced in 2018, is a family of motor-driver ICs addressing BLDC motor applications up to approximately 400 watts. In 2024 we introduced BridgeSwitch™-2 ICs, extending the addressable power range to about one horsepower, or 746 watts. Applications for ICs in the BridgeSwitch™ families include refrigerator compressors, ceiling fans, air purifiers and circulation pumps, as well as pumps and fans used in appliances such as dishwashers, laundry machines and boilers. BridgeSwitch™ products are complemented by our Motor-Xpert™ software, which provides configuration and diagnostic tools for design engineers.

#### Energy Efficiency
Power supplies often draw significantly more electricity than the amount needed by the devices they power. As a result, billions of dollars' worth of electricity is wasted each year, and millions of tons of greenhouse gases are unnecessarily produced by power plants. Energy waste occurs during the normal operation of a device and in standby mode, when the device is plugged in but idle. For example: computers and printers waste energy while in "sleep" mode; TVs that are turned off by remote control consume energy while awaiting a remote-control signal to turn them back on; a mobile-phone charger left plugged into a wall outlet continues to draw electricity even when not connected to the phone (a condition known as "no-load"); and many common household appliances, such as microwave ovens, dishwashers and washing machines, also consume power when not in use. In fact, a 2015 study by the National Resources Defense Council found that devices that are "always-on" but inactive may be causing as much as $19 billion in annual energy waste in the United States alone.

In response to concerns about the environmental impact of carbon emissions, policymakers have taken action to promote energy efficiency. For example, the ENERGY STAR® program and the European Union Code of Conduct

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encourage manufacturers of electronic devices to comply with voluntary energy-efficiency specifications. In 2007 the California Energy Commission ("CEC") implemented mandatory efficiency standards for external power supplies. The CEC standards were implemented nationwide in the United States in July 2008 as a result of the Energy Independence and Security Act of 2007 ("EISA"); these federal standards were tightened in 2016. Similar standards for external power supplies took effect in the European Union ("EU") in 2010 as part of the EU's EcoDesign Directive for Energy-Related Products.

In 2010, the EU EcoDesign Directive implemented standards limiting standby power consumption on a wide range of electronic products. The limit was reduced by 50 percent beginning in 2013, with many products now limited to 500 milliwatts of standby usage; the EU standards are scheduled to tighten further beginning in 2025. The EISA legislation also required substantial improvements in the efficiency of lighting technologies, effectively resulting in the phase-out of most incandescent light sources and increased adoption of LED-lighting technology. In December 2019 the government of China published new efficiency standards for room air conditioners, which took effect in July 2020. In 2022 India's Bureau of Energy Efficiency implemented new labeling standards for ceiling fans in an effort to drive adoption of BLDC motors in place of less efficient induction motors.

We believe we offer products that enable manufacturers to meet or exceed these regulations, and all other such regulations of which we are aware. Since 1998, our AC-DC power-conversion ICs have featured our EcoSmart™ technology which drastically reduces standby power waste. We have sold more than 21 billion ICs featuring EcoSmart™ technology, resulting in estimated savings of hundreds of terawatt-hours (TWh) of standby power worldwide. In 2010 we expanded our portfolio of energy-saving products with the introduction of our CapZero™ and SenZero™ IC families, which eliminate additional sources of standby waste in some power supplies. We also offer a range of products designed specifically for LED-lighting applications. Our GaN technology, introduced in 2019, also dramatically improves the active-mode efficiency of power-supplies. Our InnoMux™ products, also introduced in 2019, enhance active-mode efficiency in systems with multiple DC outputs by eliminating the losses incurred in separate DC-DC conversion stages.

#### Other Product Information
TOPSwitch, TinySwitch, LinkSwitch, InnoSwitch, BridgeSwitch, DPA-Switch, LYTSwitch, PeakSwitch, EcoSmart, Hiper, Qspeed, InnoMux, SCALE, SCALE-iDriver, SCALE-iFlex, CAPZero, SENZero, ClampZero, LinkZero, ChiPhy, MineE-CAP, FluxLink, eSIP, eeSIP, eSOP, inSOP, MinSOP, PowerPros, PI Databook, PI Expert and Motor-Xpert are trademarks of Power Integrations, Inc.

#### End Markets and Applications
Our net revenue consists primarily of sales of the products described above. When evaluating our net revenue, we categorize our sales into the following four major end-market groupings: communications, computer, consumer, and industrial.

The table below provides the approximate mix of our net sales by end market:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **End Market** | **2025** | **2024** | **2023** |
| Communications | 12% | 12% | 29% |
| Computer | 13% | 14% | 12% |
| Consumer | 37% | 39% | 27% |
| Industrial | 38% | 35% | 32% |

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Our products are used in a vast range of power-conversion applications in the above-listed end-market categories. The following chart lists the most prominent applications for our products in each category.

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| | |
|:---|:---|
| **Market Category** | **Primary Applications** |
| Communications | Mobile-phone chargers, broadband modems, wi-fi routers, other network and telecom gear |
| Computer | Desktop PCs and monitors, servers, adapters for tablets and notebook computers, other computer peripherals |
| Consumer | Major and small appliances, air conditioners and other comfort appliances, TVs and set-top boxes, video-game consoles |
| Industrial | Industrial motor drives, renewable energy systems, electric locomotives, electric passenger cars and commercial vehicles, high-voltage DC transmission systems, industrial controls, utility meters, motor controls, uninterruptible power supplies, LED lighting, battery-powered tools and lawn equipment, networked thermostats, power strips and other "smart home" devices |

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#### Sales, Distribution and Marketing
We sell our products to original equipment manufacturers, or OEMs, and merchant power-supply manufacturers through our direct sales staff and a worldwide network of independent sales representatives and distributors. We have sales offices in the United States, United Kingdom, Germany, Italy, India, China, Japan, South Korea, the Philippines, Canada, Singapore and Taiwan. Direct sales to OEMs and merchant power supply manufacturers represented approximately 31%, 30% and 31% of our net product revenue in 2025, 2024 and 2023, respectively, while sales to distributors accounted for the remainder in each of the corresponding years. Most of our distributors are entitled to return privileges based on revenue and are protected from price reductions affecting their inventories. Our distributors are not subject to minimum purchase requirements, and sales representatives and distributors can discontinue marketing our products at any time.

Our sales are primarily made pursuant to standard purchase orders. The quantity of products purchased by our customers as well as shipment schedules are subject to revisions that reflect changes in both the customers' requirements and in manufacturing availability. Historically, our business has been characterized by short-lead-time orders and quick delivery schedules.

Our top ten customers, including distributors that resell to OEMs and merchant power supply manufacturers, accounted for approximately 81%, 79% and 80% of net revenue in 2025, 2024 and 2023, respectively. In 2025, two customers, both distributors, each accounted for more than 10% of revenue, in 2024, two customers, both distributors, each accounted for more than 10% of revenue, and in 2023, three customers, all distributors, each accounted for more than 10% of revenue.

#### Research and Development
Our research and development efforts are focused on improving our technologies, introducing new products to expand our addressable markets, reducing the costs of existing products, and improving the cost-effectiveness and functionality of our customers' power converters. We have assembled teams of highly skilled engineers to meet our research and development goals. These engineers have expertise in high-voltage device structure and process technology, analog and digital IC design, system architecture and packaging.

#### Intellectual Property and Other Proprietary Rights
We use a combination of patents, trademarks, copyrights, trade secrets and confidentiality procedures to protect our intellectual-property rights. In 2025, we received 20 U.S. and 39 foreign patents. As of December 31, 2025, we held 281 U.S. and 329 foreign patents. Both U.S. and foreign patents have expiration dates ranging from 2026 to 2046. While our patent portfolio as a whole is important to the success of our business, we are not materially dependent upon any single patent. We also hold trademarks in the U.S. and various other geographies including Bangladesh, Brazil, China, the EU, Hong Kong, India, Japan, Korea, Russia, Switzerland, Taiwan, Turkey, and the United Kingdom.

We regard as proprietary some equipment, processes, information and knowledge that we have developed and used in the design and manufacture of our products. Our trade secrets include a high-volume production process used in the manufacture of our high-voltage ICs. We attempt to protect our trade secrets and other proprietary information through non-disclosure agreements, proprietary-information agreements with employees and consultants, and other security measures.

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#### Manufacturing
We contract with three foundries for the manufacture of the vast majority of our silicon wafers: (1) Lapis Semiconductor Co., Ltd., or Lapis, (formerly OKI Electric Industry), (2) Seiko Epson Corporation, or Epson and (3) X-FAB Semiconductor Foundries AG, or X-FAB. These contractors manufacture wafers using our proprietary high-voltage process technologies at fabrication facilities located in Japan, Germany and the United States.

Our ICs are assembled, packaged and tested by independent subcontractors in China, Malaysia, Thailand and the Philippines; a small percentage of our ICs are tested at our headquarters facility in California. Our gate-driver boards are assembled and tested by independent subcontractors in Sri Lanka and Thailand; some of the boards are tested at our facility in Switzerland.

Our fabless manufacturing model enables us to focus on our engineering and design strengths, minimize capital expenditures and still have access to high-volume manufacturing capacity. We utilize both proprietary and standard IC packages for assembly. Some of the materials used in our packages and certain aspects of the assembly process are specific to our products. We require our assembly manufacturers to use high-voltage molding compounds which are more difficult to process than industry standard molding compounds. We work closely with our contractors on a continuous basis to maintain and improve our manufacturing processes.

Our proprietary high-voltage processes do not require leading-edge geometries, which enables us to use our foundries' older, lower-cost facilities for wafer manufacturing. However, because of our highly sensitive high-voltage process, we must interact closely with our foundries to achieve satisfactory yields. Our wafer supply agreements with Lapis, Epson and X-FAB expire in December 2028, December 2035 and December 2028, respectively. Under the terms of the Lapis and Epson agreements, each supplier has agreed to reserve a specified amount of production capacity and to sell wafers to us at fixed prices, which are subject to periodic review jointly by the supplier and us. In addition, Lapis and Epson require us to supply them with a rolling six-month forecast on a monthly basis. Our agreements with Lapis and Epson each provide for the purchase of wafers in U.S. dollars, with mutual sharing of the impact of the fluctuations in the exchange rate between the Japanese yen and the U.S. dollar. Under the terms of the X-FAB agreement, X-FAB has agreed to reserve a specified amount of production capacity and to sell wafers to us at fixed prices, which are subject to periodic review jointly by X-FAB and us. The agreement with X-FAB also requires us to supply them with rolling six-month forecasts on a monthly basis. Our purchases of wafers from X-FAB are denominated in U.S. dollars.

We typically receive shipments from our foundries approximately four to six weeks after placing orders, and lead times for new products can be substantially longer. To provide sufficient time for assembly, testing and finishing, we typically need to receive wafers four weeks before the desired ship date to our customers. As a result of these factors and the fact that customers' orders can be placed with little advance notice, we have only a limited ability to react to fluctuations in demand for our products. We try to carry a substantial amount of wafer and finished-goods inventory to help offset these risks and to better serve our markets and meet customer demand.

#### Competition
Competing alternatives to our high-voltage ICs for the power-supply market include monolithic and hybrid ICs from companies such as STMicroelectronics, Infineon Technologies and Sanken Electric Company, as well as PWM-controller chips paired with discrete high-voltage silicon or GaN transistors. Such controller chips are produced by a large number of vendors, including those listed above as well as others including NXP Semiconductors, Texas Instruments, Diodes Inc., On-Bright Electronics, MediaTek Inc., Renesas Electronics, and, in recent years, an increasing number of Chinese suppliers such as Southchip Semiconductor, Chipown Microelectronics and Hangzhou Silan Microelectronics Co. Competing suppliers of high-voltage GaN products include InnoScience, Infineon, Renesas, Texas Instruments, Navitas Semiconductor and others. Our gate-driver products compete with alternatives from such companies as Infineon, Mitsubishi Electric, Fuji Electric, Semikron and Hangzhou Firstack Technology Co., as well as driver circuits made up of discrete devices. Our motor-driver ICs compete with power modules from such companies as ON Semiconductor, Infineon, STMicroelectronics, Mitsubishi and Sanken as well as discrete designs from a wide range of other suppliers. In general, we expect competition from Chinese semiconductor vendors to intensify over time reflecting China's stated aim to develop its domestic semiconductor industry.

Generally, our products enable customers to design power converters with total bill-of-materials costs similar to those of competing alternatives. As a result, the value of our products is influenced by the prices of discrete components, which fluctuate in relation to market demand, raw-material prices and other factors, but have generally decreased over time.

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While we vary the pricing of our ICs in response to fluctuations in prices of alternative solutions, we also compete based on a variety of other factors. Most importantly, the highly integrated nature of our products enables designs that utilize fewer total components than comparable discrete designs or designs using other integrated or hybrid products. This enables power converters to be designed more quickly and manufactured more efficiently and reliably than competing designs. We also compete on the basis of product functionality such as safety features and energy-efficiency features and on the basis of the technical support we provide to our customers. This support includes hands-on design assistance as well as a range of design tools and documentation such as software and reference designs. We also believe that our record of product quality and history of delivering products to our customers on a timely basis serve as additional competitive advantages.

#### Warranty
We generally warrant that our products will substantially conform to the published specifications for 12 months from the date of shipment. Under the terms and conditions of sale, our liability is limited generally to either a credit equal to the purchase price or replacement of the defective part.

#### Government Regulation
We are subject to a variety of federal, state and local governmental laws and regulations worldwide, including, but not limited to, laws, rules and regulations related to anti-corruption, antitrust, data privacy requirements, employment, environmental, foreign exchange controls, health and safety requirements, immigration, import/export requirements, IP and tax. Any failure to comply with laws and regulations may subject us to a range of consequences including fines, suspension of certain of our business activities, limitations on our ability to sell our products, obligations to remediate in the case of environmental contamination, and criminal and civil liabilities or other sanctions. Changes in environmental laws and regulations could require us to alter our manufacturing processes or use substitute materials. Our failure to comply with laws, rules and regulations could subject us to future liabilities.

See also our risk factors under Part I. Item 1A. Risk Factors in this Annual Report on Form 10-K under "Risks Related to Laws and Regulations."

#### Human Capital
As of December 31, 2025, we employed 877 full-time personnel across 15 countries with 339, or 39% of the total, residing in North America, while 61% resided offshore comprising 421 in the Asia-Pacific region and 117 across Europe. As of December 31, 2025, 6% of our worldwide employees were foreign nationals, defined as individuals requiring employment visas in the countries where they are employed.

Innovation is the lifeblood of our company, and we depend on our people to sustain our competitive advantage. To attract and retain talented employees, we offer competitive compensation with generous comprehensive benefits for employees and dependents (including domestic partners). We offer health, dental and vision insurance, covering 85% of the cost of employee health insurance in 2025, flexible spending accounts for healthcare and child-care expenses, matching 401(k) contributions (at a rate of 50% of the employee contribution, up to a maximum of 4% of the employee's eligible compensation), employee stock plans, paid vacation and family leave, life and disability insurance, flu vaccinations, tuition reimbursement, charitable gift matching, health-and-wellness programs designed to promote physical well-being and other mental health services. Approximately 96% of eligible U.S. employees participate in our 401(k) plan and 58% of eligible employees participated in the most recent offering period of our employee stock purchase plan. These benefits, combined with our culture of innovation and sustainable growth, contribute to below-average employee turnover relative to our industry and an average tenure of nearly 7.5 years. In 2023, 2024 and 2025 we were certified by Great Place to Work® based on the results of anonymous surveys of employees; in the 2025 survey, 78% of employees stated that Power Integrations is a great place to work, compared to an average of 57% for U.S. companies according to Great Place to Work.

It is our policy to ensure equal employment opportunity for all applicants and employees without regard to prohibited considerations of race, color, religion, sex (including pregnancy, gender identity and sexual orientation), national origin, age, disability or genetic information, marital status or any other classification protected by applicable local, state or federal laws. Our employees are encouraged to engage with company leadership and raise concerns and questions in person, via e-mail (anonymously if desired), or at our quarterly employee communications meeting with the chief executive officer and senior management team. All employees receive training in the prevention of sexual harassment and abusive conduct in the workplace.

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We value our employees, giving them the tools and training to grow as individuals, and the freedom to take risks in the service of innovation. We offer tuition reimbursement for job-related education and provide live and online classes covering topics such as communication, leadership and management, software, and time management. We also offer catered lunch-time workshops on a range of personal-development topics such as financial planning, nutrition and stress management.

Additional information regarding our commitment to our people can be found on our website at https://www.power.com/company/careers/people-our-engine-innovation*.*

#### Corporate Information
Power Integrations, Inc. was incorporated in California on March 25, 1988, and reincorporated in Delaware in December 1997. Our principal executive offices are located at 5245 Hellyer Ave, San Jose, CA 95138. Our telephone number is (408) 414-9200.

#### Available Information
We may use our website, *www.power.com*, press releases, public conference calls, public webcasts, X and LinkedIn as means of disclosing material non-public information and for complying with our disclosure obligations under Regulation FD. We make available, free of charge, copies of our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended, or the Exchange Act as soon as reasonably practicable after filing this material electronically or otherwise furnishing it to the SEC. Investors may obtain free electronic copies or request paper copies of these reports via the "For Investors" section of our website. Our website address is provided solely for informational purposes. We do not intend, by this reference, that our website should be deemed to be part of this Annual Report. The reports we file with the SEC are also available at *www.sec.gov*. We will disclose any waiver we grant to an executive officer or director under our Code of Ethics, or certain amendments to the Code of Ethics, on our website https://investors.power.com/governance/.

Our corporate governance guidelines, the charters of our board committees, and our code of business conduct and ethics, including ethics provisions that apply to our principal executive officer, principal financial officer, controller and senior financial officers, are also available via the investor website listed above. These items are also available in print to any stockholder who requests them by calling (408) 414-9200. We intend to satisfy the disclosure requirements of Form 8-K regarding an amendment to, or a waiver from, a provision of our code of business conduct and ethics that applies to our principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions by posting such information on our investor website listed above.

#### Information About Our Executive Officers
As of January 30, 2026, our executive officers, who were appointed by and serve at the discretion of our board of directors, were as follows:

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| | | |
|:---|:---|:---|
| **Name** | **Position With Power Integrations** | **Age** |
| Jennifer Lloyd | President, Chief Executive Officer and Director | 58 |
| Nancy Erba | Chief Financial Officer | 59 |
| Sunny Gupta | Senior Vice President, Operations | 53 |
| Gagan Jain | Vice President, Worldwide Sales | 48 |

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*Jennifer Lloyd, PhD*, has served as president, chief executive officer and as a director of Power Integrations since July 2025; she also previously served as a member of the board of directors from April 2021 through October 2022. Previously, from 1997 until July 2025, Dr. Lloyd served in a succession of increasingly senior technical and management roles at Analog Devices, Inc. ("Analog"), a global semiconductor leader. Prior roles included corporate vice president leading Analog's multi-market power business unit, leadership of Analog's precision franchise and its healthcare and consumer unit. Dr. Lloyd holds doctoral, master's, and bachelor's degrees in electrical engineering and computer science from the Massachusetts Institute of Technology.

*Nancy Erba* has served as chief financial officer since January 2026. Ms. Erba brings more than 25 years of corporate finance experience, most recently as chief financial officer at Infinera Corporation from 2019 through the company's acquisition in 2025. From 2016 to 2019 she was chief financial officer at Immersion Corporation. Ms. Erba

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held a succession of increasingly senior leadership positions at Seagate Technology, including executive leadership roles in finance, business operations and corporate development. Ms. Erba has been a member of the board of directors and chair of the audit committee at PDF Solutions since June 2019. She holds an MBA from Baylor University and a bachelor's degree in mathematics from Smith College.

*Sunny Gupta* has served as our vice president of operations since August 2020. Prior to joining Power Integrations, Mr. Gupta was vice president of operations at Renesas Electronics Corporation, a provider of electronics solutions, from July 2017 until August 2020, in which position he was responsible for global operations for Intersil and IDT products as well as the integration into the operations of Renesas. Prior to joining Renesas he was Senior Vice President, Global Operations at Intersil Corporation, a developer of power management and precision analog integrated circuits, from June 2016 to July 2017, in which position he led the global operations and technology teams, and was Vice President, Quality and Technology Development at Intersil was from September 2013 to June 2016, in which position he led the quality, reliability, yield, process technology and package technology teams. Mr. Gupta joined Intersil in 2012 as its Vice President, Quality and Reliability. Prior to joining Intersil, Mr. Gupta was the Director of Worldwide Customer Quality Engineering at Qualcomm, and prior to Qualcomm Mr. Gupta spent 16 years at National Semiconductor in wafer fab operations and quality.

*Gagan Jain* has served as our vice president, worldwide sales since September 2024. Mr. Jain joined Power Integrations in 2013, managing the company's industrial and high-power gate-driver business in Japan before being promoted to director of sales for Japan. In 2016, he relocated to the company's San Jose headquarters to assume the role of senior sales director for the Americas. He was promoted to the role of vice president, worldwide sales in 2024. Prior to joining Power Integrations, Mr. Jain held various managerial positions at Infineon Technologies Japan in the industrial module and bi-polar devices business; earlier roles included business development and technical sales in India and Japan focusing on the Asia-Pacific, Europe and South Africa markets.

#### Item 1A. Risk Factors.
*Investing in our common stock involves a high degree of risk. You should carefully consider the risks and uncertainties described below, together with all of the other information in this Annual Report on Form 10-K, including the section titled "Management's Discussion and Analysis of Financial Condition and Results of Operations" and our consolidated financial statements and related notes, before making a decision to invest in our common stock. Our business, financial condition, results of operations, or prospects could also be harmed by risks and uncertainties not currently known to us or that we currently do not believe are material. If any of the risks actually occur, our business, financial condition, results of operations, and prospects could be adversely affected. In that event, the market price of our common stock could decline, and you could lose all or part of your investment.*

#### Risks Related to Ownership of Our Common Stock
*Our operating results are volatile and difficult to predict. If we fail to meet the expectations of public market analysts or investors, the market price of our common stock may decrease significantly*. Our net revenue and operating results have varied significantly in the past, are difficult to forecast, are subject to numerous factors both within and outside of our control and may fluctuate significantly in the future. As a result, our operating results could fall below the expectations of public market analysts or investors. If that occurs, the price of our stock may decline.

Some of the factors that could affect our operating results and the price of our stock include the following:

● The demand for our products declining in the major end markets we serve and the ability of our products to penetrate additional markets; which may occur due to competitive factors, supply-chain fluctuations, rising inflation or other changes in macroeconomic or geopolitical conditions;

● changes in global trade policy, including tariffs, could reduce demand for end products that incorporate our products, which could have a material adverse effect on our revenue and operating results;

● reliance on international sales activities for a substantial portion of our net revenue;

● the volume and timing of orders received from customers;

● our ability to develop and bring to market new products and technologies, including on a timely basis;

● unfavorable or uncertain market conditions and risks relating to the adoption, use or application of emerging technologies, including AI, by our customers and in our business;

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● undetected defects, quality issues, warranty claims or product recalls related to our products;

● failure, disruption, security breaches, or other incidents impacting our information technology infrastructure or information management systems;

● interruptions in our information technology systems;

● competitive pressures on selling prices;

● risks associated with our supply chain including, the volume, cost and timing of delivery of orders placed by us with our wafer foundries and assembly subcontractors, and their ability to procure materials;

● our ability to attract and retain qualified personnel;

● our ability to realize the expected benefits of restructuring initiatives designed to reduce costs and create a more efficient organization;

● the lengthy timing of our sales cycle;

● the cyclical nature of the power supply industry and cyclical market patterns across different end markets for which our products are used;

● earthquakes, fire, global health crises, or other disasters;

● sales of our products through distributors, which limits our direct interaction with our end customers, reducing our ability to forecast sales and increasing the complexity of our business;

● fluctuations in exchange rates, particularly the exchange rate between the U.S. dollar and the Japanese yen, the Euro and the Swiss franc;

● the inability to adequately protect or enforce our intellectual property rights;

● expenses we are required to incur (or choose to incur) in connection with litigation;

● changes in tax rules and regulations, changes in interpretation of tax rules and regulations, or unfavorable assessments from tax audits may increase the amount of taxes we are required to pay and require management time and attention;

● changes in environmental laws and regulations, including with respect to energy consumption and climate change;

● current or potential war, domestic or international conflict, political or social instability, or military actions, including the conflicts in Ukraine and the Middle East;

● risks associated with acquisitions and strategic investments;

● our ability to successfully integrate, or realize the expected benefits from, our acquisitions;

● continued impact of changes in securities laws and regulations, including potential risks resulting from our evaluation of our internal controls over financial reporting; and

● we have been and may be subject to or involved in litigation, threatened litigation or other disputes, the outcome of which may be difficult to predict, and which may be costly to defend, divert management attention, require us to pay damages or other payments, or restrict the operation of our business.

#### Risks Related to the Operation and Growth of Our Business
*If demand for our products declines in our major end markets and we do not penetrate additional markets, our net revenue will decrease.* When our customers are not successful in maintaining high levels of demand for their products, their demand for our products decreases, which adversely affects our operating results. A limited number of applications of our products, such as consumer appliances and cellphone chargers, make up a significant percentage of our net revenue. We expect that a significant level of our net revenue and operating results will continue to be dependent upon these applications in the near term. Demand for end products incorporating our products has been highly cyclical over time and has been impacted by economic downturns; our recent results have been impacted by economic conditions, including softness in housing markets, which affects demand for consumer appliances and inflation. Any economic slowdown or

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disruption in the end markets that we serve could cause a slowdown in demand for our ICs, causing our net revenue to decline and potentially result in write-offs of excess or obsolete inventory, which could cause the price of our stock to fall.

We believe that our future success depends in part upon our ability to penetrate additional markets for our products. We cannot assure that we will be able to overcome the marketing or technological challenges necessary to penetrate additional markets. To the extent that a competitor penetrates additional markets before we do, or takes market share from us in our existing markets, our net revenue and financial condition could be materially adversely affected.

*Changes in global trade, in particular the escalation and imposition of new and higher tariffs and additional export controls, could reduce demand for end products that incorporate our products, which could have a material adverse effect on our revenue and operating results. Further, increased tariffs or the imposition of other barriers to international trade could place pressure on our prices as our customers seek to offset the impact of increased tariffs on them. Compliance with import and export controls could impair our ability to compete in international markets or subject us to liability if we violate these controls.*

Although power supplies using our products are designed and distributed worldwide, most of these power supplies are manufactured by our customers in Asia. As a result, our business is subject to risks related to tariffs and other trade protection measures put in place by the United States or other countries, as well as evolving international trade relations, including but not limited to those between the U.S., China, countries in the APAC region and the EU.

During the year 2025, the United States government imposed and threatened significant additional tariffs on goods imported into the U.S. from most of its trading partners, and, in response, multiple countries imposed or threatened retaliatory tariffs and other actions. Trade tensions between the U.S. and China have escalated and may continue to escalate, including the U.S. increasing tariffs on goods originating in China and China increasing tariffs on goods originating in the U.S. Changes in trade policies and a heightened risk of further increased tariffs or other barriers to international trade could further decrease international demand as many of our customers sell products incorporating our products into international markets.

Existing or future tariffs proposed or imposed on our customers' products may adversely affect our gross profit margins in the future due to the potential for increased pressure on our selling prices by customers seeking to offset the impact of tariffs on their own products or other products that they purchase. In addition, tariffs could make our customers' products less attractive relative to products offered by their competitors, that may not be subject to, or as significantly impacted by, similar tariffs. Further or sustained increases in tariffs on imported goods or the failure to resolve current or new international trade disputes could further decrease demand and have a material adverse effect on our business and operating results. Even if we are able to take measures to mitigate the impacts of existing or future tariffs, there is no guarantee that our efforts will be successful, or that we will be able to fully mitigate such impacts.

Resulting trade disputes, trade restrictions, tariffs and other political tensions between the U.S. and other countries or among countries may also exacerbate unfavorable macroeconomic conditions including inflationary pressures, foreign exchange volatility, financial market instability, and economic recessions or downturns, which may also negatively impact customer demand for our products or services, delay purchases or renewals, limit our ability to obtain equipment, components or raw materials, limit expansion opportunities with customers, limit our access to capital, or otherwise negatively affect our business and operations. Ongoing tariff, trade restrictions and macroeconomic uncertainty also has and may continue to contribute to volatility in the price of our common stock.

In some cases, our products and power supplies using our products are subject to import and export control laws and regulations, including the Export Administration Regulations administered by the U.S. Department of Commerce and trade and economic sanctions, including those administered by the U.S. Treasury Department's Office of Foreign Assets Control. As such, licenses and notices may be required to import, export, or re-export our products and power supplies using our products to certain countries and end users or for certain end uses. The process for obtaining necessary licenses or making required notices may be time-consuming or unsuccessful, potentially causing delays in sales or losses of sales opportunities. Trade controls are complex and dynamic regimes and monitoring and ensuring compliance can be challenging. Failure to adhere to such rules and regulations can result in the incurrence of fines, loss of import or export privileges, seizure of products, loss of reputation and other penalties, any of which could have a material adverse effect on our business, sales and earnings. A change in laws and regulations could restrict our ability to transfer products to previously permitted countries, customers, distributors or others. It is also possible that evolving U.S. export controls may encourage non-U.S. governments to request that our customers purchase from companies not subject to U.S. export controls, thereby harming our business, market position, and financial results. Excessive export controls increase the risk of investing in U.S. semiconductor products, because by the time a new product is ready for market, it may be subject to

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new unilateral export controls restricting its sale. At the same time, such controls may increase investment in foreign competitors, which would be less likely to be restricted by U.S. controls.

Furthermore, compliance with import and export controls and implementation of additional tariffs may increase regulatory compliance costs and further affect our business and operating results.

*Our international sales activities account for a substantial portion of our net revenue, which subjects us to substantial risks.* Sales to customers outside of the U.S. account for, and have accounted for, a large portion of our net revenue. Approximately 98% of our net revenue for each of the years ended December 31, 2025, 2024 and 2023 was generated by sales to customers outside of the U.S. If our international sales decline and we are unable to increase domestic sales, our revenue and operating results would be harmed. International sales involve a number of risks to us, including:

● tariffs, protectionist measures and other trade barriers and restrictions;

● potential insolvency of international distributors and representatives;

● reduced protection for intellectual property rights in some countries;

● the impact of recessionary environments and inflation in the U.S. and other economies where we do business;

● global, regional, and local conditions, including, but not limited to, social, economic, political, and supply chain instability related to the uncertainty regarding relationships among countries, including tensions between China and Taiwan and between China and other countries, as well as the conflict between Russia and Ukraine and the ongoing conflict in the Middle East;

● the burdens of complying with a variety of foreign and applicable U.S. Federal and state laws; and

● foreign-currency exchange fluctuations.

Our failure to adequately address these risks could reduce our international sales and materially and adversely affect our operating results. Furthermore, because substantially all of our foreign sales are denominated in U.S. dollars, increases in the value of the dollar cause the price of our products in foreign markets to rise, making our products more expensive relative to competing products priced in local currencies.

*We do not have long-term contracts with any of our customers and if they fail to place, or if they cancel or reschedule orders for our products, our operating results and our business may suffer.* Our business is characterized by short-term customer orders and shipment schedules, and the ordering patterns of some of our large customers have been unpredictable in the past and will likely remain unpredictable in the future. Not only does the volume of units ordered by particular customers vary substantially from period to period, but also purchase orders received from particular customers often vary substantially from early oral estimates provided by those customers for planning purposes. In addition, customer orders can be canceled or rescheduled without significant penalty to the customer. In the past, we have experienced customer cancellations of substantial orders for reasons beyond our control, and significant cancellations could occur again at any time. Also, a relatively small number of distributors, OEMs and merchant power supply manufacturers account for a significant portion of our revenue. As a result, any challenges that we face with a key distributor, including the loss of a key distributor, could harm our business. Similarly, although we sell through various distributors, certain end customers account for a significant portion of our revenue. As such, the loss of demand for our products by customers who purchase through different distributors could harm our business even if the impacts through a single distributor are immaterial.

*If our efforts to enhance existing products and introduce new products are not successful, we may not be able to generate demand for our products*. Our success depends in significant part upon our ability to develop new ICs for high-voltage power conversion for existing and new markets, to introduce these products in a timely manner and to have these products selected for design into products. New product introduction schedules are subject to the risks and uncertainties that typically accompany development and delivery of complex technologies to the marketplace, including product development delays and defects. We have experienced delays from time to time in completing new product development. If we fail to develop and sell new products in a timely manner in the future, then our net revenue and ability to compete domestically or internationally could decline.

In addition, we cannot be sure that we will be able to adjust to changing market demands as quickly and cost-effectively as necessary to compete successfully. Furthermore, we cannot assure that we will be able to introduce new products in a timely and cost-effective manner or in sufficient quantities to meet customer demand or that these products will achieve market acceptance. Our failure, or our customers' failure, to develop and introduce new products successfully

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and in a timely manner would harm our business. In addition, customers may defer or return orders for existing products. While we maintain reserves for potential customer returns, we cannot assure that these reserves will be adequate.

*Unfavorable or uncertain market conditions and risks relating to the adoption, use or application of emerging technologies, including AI, by our customers and in our business, may impact financial results and could result in reputational and financial harm and liability.* The adoption of AI solutions and other emerging technologies may not develop in the manner or in the time periods we anticipate, and as these markets are still developing and continue to evolve, demand for products and solutions related to or that support such technologies may be unpredictable and may vary significantly from one period to another. In addition, market enthusiasm and capital spending for AI-related infrastructure and applications may be cyclical or volatile. If customers or end markets materially reduce, delay or redirect spending (including due to macroeconomic conditions, budget constraints, changes in technology architectures, a perceived overbuild of AI capacity or other unanticipated reasons), demand for our products could be adversely affected.

These markets may also not develop as anticipated if AI training and inference costs drop materially due to customer adoption of less expensive alternative technologies or approaches, or if customers achieve desired performance using alternative solutions that reduce the need for certain components. Even if these markets evolve in the manner we anticipate, if we do not have timely, competitively priced and market-accepted products available to meet customer needs in these areas, we may miss significant opportunities business, financial condition and results of operations could be materially and adversely affected.

*Our products must meet exacting specifications, and undetected defects, failures or other quality issues may occur which may cause customers to return or stop buying our products and/or impose significant costs to us.* Our customers generally establish demanding specifications for quality, performance and reliability, and our products must meet these specifications. ICs encounter development delays and may contain undetected defects, failures or other quality issues when first introduced or after commencement of commercial shipments. We have from time to time in the past experienced product quality, performance or reliability problems. If defects and failures occur in our products or if or any such failures are alleged to result in bodily injury, death, and/or property damage, we could experience lost revenue, decreased ability to compete, increased costs (including product warranty or liability claims) and costs associated with customer support and product recalls, delays in or cancellations or rescheduling of orders or shipments and product returns or discounts. Some OEMs expect suppliers to warrant their products for longer periods of time and are increasingly looking to them for contribution when faced with product liability claims or recalls. While we specifically exclude consequential damages in our standard terms and conditions, certain of our contracts may not exclude such liabilities. We carry various commercial liability policies, including umbrella/excess policies which cover certain damages arising out of product defects. These policies may not cover all claims or be of a sufficient amount to fully protect against such claims, and a successful warranty or product liability claim against us in excess of our available insurance coverage, or a requirement that we participate in a product recall, could have adverse effects on our business results. Further, in the future, it is possible that we will not be able to obtain insurance coverage in the amounts and for the risks we seek at policy costs and terms we desire. Additionally, if our products fail to perform as expected or such failure of our products results in a recall, our reputation may be damaged, which could make it more difficult for us to sell our products to existing and prospective customers and could materially and adversely affect our business, results of operations and financial condition.

*Any failure, disruption or security breach or incident otherwise impacting our information technology infrastructure or information management systems could have an adverse impact on our business and operations.* Cyber-attacks have become increasingly more prevalent and much harder to detect, defend against or prevent. As the frequency of cyber-attacks and resulting breaches reported by other businesses and governments increases, we expect to continue to devote significant resources to improve and maintain our IT infrastructure and its security. We have incurred and may in the future incur significant costs in order to implement, maintain and/or update security systems we believe are necessary to protect our IT infrastructure. As the techniques used to obtain unauthorized access to or to sabotage or otherwise disrupt systems change frequently and are often not recognized until launched against a target, we may be unable to anticipate these techniques or to implement adequate preventive measures. A breakdown in existing controls and procedures around our cyber-security environment may prevent us from detecting, reporting or responding to cyber incidents in a timely manner and any such breakdown, or any security breach or incident suffered by us of our third-party service providers, could have a material adverse effect including but not limited to interruptions, other disruptions or delays in our business operations, loss of existing or future customers, claims, demands and liabilities and damage to our reputation, which could adversely affect our business, reputation, and financial results. We cannot guarantee that our implemented processes for IT and risk mitigation measures will be effective for IT systems under our control.

Furthermore, we rely on products and services provided by third-party suppliers to operate certain critical business systems. We cannot guarantee that third parties and infrastructure in our supply chain or our partners' supply

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chains have not been or will not be compromised or that they do not or will not in the future contain exploitable defects or bugs that could result in a breach of or disruption to or other incident impacting our IT infrastructure, including our products and services, or the third-party information technology systems that support our services.

We have limited insight into the data privacy or security practices of third-party service providers. Our ability to monitor these third parties' information security practices is limited, and they may not have adequate information security measures in place. If one of our third-party suppliers suffers a security breach or incident, our response may be limited or more difficult because we may not have direct access to their systems, logs and other information related to the security breach or incident.

*Interruptions in our information technology systems could adversely affect our business.* We rely on the efficient and uninterrupted operation of complex information technology systems and networks to operate our business. Any significant system or network disruption, including but not limited to new system implementations, faulty software provided by one of our security vendors, computer viruses, security breaches or incidents, or energy blackouts could have a material adverse impact on our operations, sales and operating results. We have implemented measures to manage our risks related to such disruptions, but such disruptions could still occur and negatively impact our operations and financial results. Furthermore, the risk of state-supported and geopolitically motivated cybersecurity incidents may increase due to geopolitical instability. In addition, we may incur additional costs to remedy any damages caused by these disruptions, security breaches or other security incidents.

*Intense competition in the high-voltage power supply industry may lead to a decrease in our average selling price and reduced sales volume of our products.* The high-voltage power supply industry is intensely competitive and characterized by significant price sensitivity. Our products face competition from alternative technologies, such as linear transformers, discrete switcher power supplies, and other integrated and hybrid solutions. If the price of competing solutions decreases significantly, the cost effectiveness of our products will be adversely affected. If power requirements for applications in which our products are currently utilized go outside the cost-effective range of our products, some of these alternative technologies can be used more cost effectively. In addition, as our patents expire, our competitors could legally begin using the technology covered by the expired patents in their products, potentially increasing the performance of their products and/or decreasing the cost of their products, which may enable our competitors to compete more effectively. Our current patents may or may not inhibit our competitors from getting any benefit from an expired patent.

Additionally, we compete with major domestic and international semiconductor companies, many of which have greater market recognition and substantially greater financial, technical, marketing, distribution and other resources than we do. In addition, some governments, such as China, may provide, or have provided and may continue to provide, significant assistance financial or otherwise, to some of our competitors, or to new entrants, and may intervene in support of national industries and/or competitors, including to try to disrupt the U.S. semiconductor industry. The semiconductor industry has experienced significant consolidation in recent years which has resulted in several of our competitors becoming much larger in terms of revenue, product offerings and scale. We may be unable to compete successfully in the future, which could harm our business.

We have experienced in the past, and may experience in the future, competitive pricing pressures on our products. We may be unable to maintain average selling prices due to increased pricing pressure, including as a result of actions taken by foreign governments such as China to favor companies located in their own country, which could adversely impact our operating results.

We, and our competitors, seek to improve yields, which could result in significant increases in worldwide supply and downward pressure on prices. Increases in worldwide supply of semiconductor products, if not accompanied by commensurate increases in demand, could lead to declines in average selling prices for our products, and could materially adversely affect our business, results of operations, or financial condition.

*We depend on third-party suppliers to provide us with wafers for our products and if they fail to provide us sufficient quantities of wafers, our business may suffer*. Our primary supply arrangements for the production of wafers are with Epson, Lapis and X-FAB. Our contracts with these suppliers expire on varying dates, with Lapis and X-FAB each to expire in December 2028 and Epson to expire in December 2035. Although some aspects of our relationships with Lapis, X-FAB and Epson are contractual, many important aspects of these relationships depend on their continued cooperation. We cannot assure that we will continue to work successfully with Epson, Lapis and X-FAB in the future, and that the wafer foundries' capacity will meet our needs. Additionally, one or more of these wafer foundries could seek an early termination of our wafer supply agreements. Any serious disruption in the supply of wafers from Epson, Lapis and X-FAB could harm our business. We estimate that it would take 12 to 24 months from the time we identified an alternate manufacturing source to produce wafers with acceptable manufacturing yields in sufficient quantities to meet our needs.

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Although we provide our foundries with rolling forecasts of our production requirements, their ability to provide wafers to us is ultimately limited by the available capacity of the wafer foundry. Any reduction in wafer foundry capacity available to us could require us to pay amounts in excess of contracted or anticipated amounts for wafer deliveries or require us to make other concessions to meet our customers' requirements or may limit our ability to meet demand for our products. Further, to the extent demand for our products exceeds wafer foundry capacity, this could inhibit us from expanding our business and harm relationships with our customers. Any of these concessions or limitations could harm our business.

If our third-party suppliers and independent subcontractors do not produce our wafers and assemble our finished products at acceptable yields, our net revenue may decline. We depend on independent foundries to produce wafers, and independent subcontractors to assemble and test finished products, at acceptable yields and to deliver them to us in a timely manner. The failure of the foundries to supply us wafers at acceptable yields could prevent us from selling our products to our customers and would likely cause a decline in our net revenue and gross margin. In addition, our IC assembly process requires our manufacturers to use a high-voltage molding compound that has been available from only a few suppliers. These compounds and their specified processing conditions require a more exacting level of process control than normally required for standard IC packages. Unavailability of assembly materials or problems with the assembly process can materially and adversely affect yields, timely delivery and cost to manufacture. We may not be able to maintain acceptable yields in the future.

In addition, if prices for commodities used in our products increase significantly, raw material costs would increase for our suppliers which could result in an increase in the prices our suppliers charge us. To the extent we are not able to pass these costs on to our customers; this would have an adverse effect on our gross margins.

Additionally, certain materials are primarily available in a limited number of countries, including rare earth elements, minerals, and metals. Trade disputes, geopolitical tensions, economic circumstances, transit disruptions, political conditions, or public health issues, may limit our ability to obtain materials or equipment. Although rare earth and other materials are generally available from multiple suppliers, China is the predominant producer of certain of these materials. If China were to restrict or stop exporting these materials, our suppliers' ability to obtain such supply may be constrained and we may be unable to obtain sufficient quantities, or obtain supply in a timely manner, or at a commercially reasonable cost. Constrained supply of rare earth elements, minerals, and metals may restrict our ability to manufacture certain of our products and make it difficult or impossible to compete with other semiconductor memory manufacturers who are able to obtain sufficient quantities of these materials from China or other countries.

*We must attract and retain qualified personnel to be successful and competition for qualified personnel is intense in our market.* Our success depends to a significant extent upon the continued service of our executive officers and other key management and technical personnel, and on our ability to continue to attract, retain and motivate qualified personnel, such as experienced analog design engineers and systems applications engineers. The competition for these employees is intense, particularly in Silicon Valley. The loss of the services of one or more of our engineers, executive officers or other key personnel could harm our business. In addition, if qualified personnel leave our employ, and we are unable to quickly and efficiently replace those individuals with qualified personnel who can smoothly transition into their new roles, our business may suffer. We do not have long-term employment contracts with, and we do not have in place key person life insurance policies on, any of our employees.

Changes in our management team can also disrupt our business and adversely affect our results of operations, given the lengthy sales cycle for our products and the large capital investments over a long time period required for our operations. We have had a number of changes in our senior leadership team in recent years, including, for example, the retirement of our former chief executive officer and the departure of our former chief financial officer in 2025. To the extent we do not effectively hire, onboard, retain, and motivate key employees and leadership, our business may be harmed.

*We may incur higher than expected expenses or not realize the expected benefits, or any benefits, of restructuring initiatives designed to reduce costs and create a more efficient organization.* We have pursued in the past and may pursue in the future restructuring initiatives designed to reduce costs and create a more efficient organization to support our business, including reductions in our workforce or relocating certain operations. Any restructuring initiatives could result in potential adverse effects on employee capabilities; our continued ability to recruit, hire, retain and motivate highly skilled personnel; our ability to maintain and grow our customer base; or our ability to effectively operate other aspects of our business. Adverse effects of our restructuring activities could lead to additional costs, harm our efficiency or impact our ability to effectively operate our business. In addition, we may be unsuccessful in our efforts to realign our organizational structure and shift our investments. The potential negative impact of restructuring efforts on our business may have a material impact on our business, financial condition and results of operations.

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*Because the sales cycle for our products can be lengthy, we may incur substantial expenses before we generate significant revenue, if any.* Our products are generally incorporated into a customer's products at the design stage. However, customer decisions to use our products, commonly referred to as design wins, can often require us to expend significant research and development and sales and marketing resources without any assurance of success. These significant research and development and sales and marketing resources often precede volume sales, if any, by a year or more. The value of any design win will largely depend upon the commercial success of the customer's product. We cannot assure that we will continue to achieve design wins or that any design win will result in future revenue. If a customer decides at the design stage not to incorporate our products into its product, we may not have another opportunity for a design win with respect to that product for many months or years.

*The power supply industry routinely experiences cyclical market patterns and our products are used across different end markets. A significant downturn in the industry or in any of these end markets could cause a meaningful reduction in demand for our products and adversely affect our operating results.* The power supply industry is highly cyclical and subject to downturns, such as we have recently seen, and our revenue and gross margin can fluctuate significantly due to such downturns. These downturns can be severe and prolonged and can result in price erosion and weak demand for our products. Weak demand for our products resulting from general economic conditions affecting the end markets we serve, or the power supply industry specifically, and reduced spending by our customers can result, and in the past has resulted, in diminished product demand, high inventory levels, erosion of average selling prices, excess and obsolete inventories and corresponding inventory write-downs. Our expense levels are based, in part, on our expectations of future sales. Many of our expenses, particularly those relating to facilities, capital equipment, and other overhead, are relatively fixed. We might be unable to reduce spending quickly enough to compensate for reductions in sales. Accordingly, shortfalls in sales could adversely affect our operating results. Furthermore, any significant upturn in the power supply industry could result in increased competition for access to raw materials and third-party service providers.

Additionally, our products are used across different end markets, and demand for our products is difficult to predict and may vary within or among our end markets. Our target markets may not grow or develop as we currently expect, and demand may increase or change in one or more of our end markets, and changes in demand may reduce our revenue, lower our gross margin and effect our operating results. Any deterioration in these end markets, reductions in the magnitude of revenue streams, our inability to meet design and pricing requirements, or volatility in demand for our products could lead to a reduction in our revenue and adversely affect our operating results. Our success in our end markets depends on many factors, including the strength or financial performance of the customers in our end markets, our ability to timely meet rapidly changing product requirements, market needs, and our ability to maintain design wins across different markets and customers to dampen the effects of market volatility. The dynamics of the markets in which we operate make prediction of and timely reaction to such events difficult.

In addition, expectations and front-loaded investment related to AI may increase the magnitude and volatility of industry cycles, making downturns more abrupt or recoveries more uneven. Recent industry investment and customer spending patterns have been influenced by heightened interest in AI and AI-related applications. To the extent that current levels of investment in AI-related infrastructure, products, or end-market demand reflect expectations that are not ultimately realized, or if customer spending related to AI moderates, is delayed, or declines more rapidly than anticipated, the industry could experience an accelerated or more pronounced downturn.

Due to these and other factors, our past results may not be reliable predictors of our future results. If we are unable to accomplish any of the foregoing, or to offset the volatility of cyclical changes in the power supply industry or our end markets through diversification into other markets, these factors could materially and adversely affect our business, financial condition, and operating results.

*In the event of an earthquake, fire, other pandemics, natural or other disasters, including with respect to climate change, our operations may be interrupted and our business would be harmed.* Our principal executive offices and operating facilities are situated near San Francisco, California, and most of our major suppliers, which are wafer foundries and assembly houses, are located in areas that have been subject to severe earthquakes, such as Japan. Many of our suppliers are also susceptible to other disasters such as tropical storms, typhoons, tsunamis or other catastrophic events, including those caused by climate change. In the event of a disaster, we or one or more of our major suppliers may be temporarily unable to continue operations and may suffer significant property damage. Additionally, our business or the business of our suppliers may in the future be adversely impacted by world-wide responses to any global health or other crises. Such impacts could include public health measures, travel restrictions, business shutdowns, border closures, delivery and freight delays and other disruptions. Any interruption in our ability, or that of our major suppliers, to continue operations could delay the development and shipment of our products and have a substantial negative impact on our financial results.

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#### Risks Related to Financial Performance
*Our products are sold through distributors, which limits our direct interaction with our end customers, therefore reducing our ability to forecast sales and increasing the complexity of our business.* Sales to distributors account for a significant portion of our net revenue. Selling through distributors reduces our ability to forecast sales and creates challenges for our business by requiring us, among other things, to:

● manage a more complex supply chain;

● monitor the level of inventory of our products at each distributor, and

● monitor the financial condition and credit-worthiness of our distributors, many of which are located outside of the United States and are not publicly traded.

Since we have limited ability to forecast inventory levels at our end customers, it is possible that there may be significant build-up of inventories in the distributor channel, with the OEM or the OEM's contract manufacturer. Such a buildup could result in a slowdown in orders, requests for returns from customers, or requests to move out planned shipments. This could adversely impact our revenue and profits. Any failure to manage these complexities could disrupt or reduce sales of our products and unfavorably impact our financial results.

In addition, to the extent we are not able to keep our products away from unintended markets, demand and pricing dynamics can become distorted in our distributor channel and certain geographies, which could adversely affect our revenue. Further, customers purchasing our products on unintended markets may use our products for purposes for which they were not intended, or may purchase counterfeit or substandard products, for instance that have been altered or damaged, which could harm our business and cause our reputation to be adversely affected.

*Fluctuations in exchange rates, particularly the exchange rate between the U.S. dollar and the Japanese yen, Swiss franc and euro, may impact our gross margin and net income*. Our exchange rate risk related to the Japanese yen includes two of our major suppliers, Epson and Lapis, with which we have wafer supply agreements based in U.S. dollars; however, these agreements also allow for mutual sharing of the impact of the exchange rate fluctuation between Japanese yen and the U.S. dollar. Each year, our management and these suppliers review and negotiate pricing; the negotiated pricing is denominated in U.S. dollars but is subject to contractual exchange rate provisions. The fluctuation in the exchange rate is shared equally between Power Integrations and each of these suppliers. We maintain cash denominated in Swiss francs and euros to fund the operations of our Swiss subsidiary. The functional currency of our Swiss subsidiary is the U.S. dollar; gains and losses arising from the remeasurement of non-functional currency balances are recorded in other income in our consolidated statements of income, and material unfavorable exchange-rate fluctuations with the Swiss franc could negatively impact our net income.

*If we are unable to adequately protect or enforce our intellectual property rights, we could lose market share, incur costly litigation expenses, suffer incremental price erosion or lose valuable assets, any of which could harm our operations and negatively impact our profitability.* Our success depends upon our ability to continue our technological innovation and protect our intellectual property, including patents, trade secrets, copyrights and know-how. We cannot assure that the steps we have taken to protect our intellectual property will be adequate to prevent misappropriation, or that others will not develop competitive technologies or products. From time to time, we have received, and we may receive in the future, communications alleging possible infringement of patents or other intellectual property rights of others. Costly litigation may be necessary to enforce our intellectual property rights or to defend us against claimed infringement. The failure to obtain necessary licenses and other rights, and/or litigation arising out of infringement claims could cause us to lose market share and harm our business.

Our U.S. patents have expiration dates ranging from 2026 to 2046. We cannot assure that our products will continue to compete favorably or that we will be successful in the face of increasing competition from new products and enhancements introduced by existing competitors or new companies entering this market. We believe our failure to compete successfully in the high-voltage power supply business, including our ability to introduce new products with higher average selling prices, would materially harm our operating results. As our patents expire, we will lose intellectual property protection previously afforded by those patents. Additionally, the laws of some foreign countries in which our technology is or may in the future be licensed may not protect our intellectual property rights to the same extent as the laws of the United States, thus limiting the protections applicable to our technology.

*If we do not prevail in our litigation, we will have expended significant financial resources, potentially without any benefit, and may also suffer the loss of rights to use some technologies.* We are currently involved in defending a patent litigation matter and the outcome of the litigation is uncertain. See Note 14, *Legal Proceedings and Contingencies*, in our Notes to Consolidated Financial Statements included in this Annual Report on Form 10-K. In the event of an

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adverse outcome, we may be required to pay substantial damages, stop our manufacture, use, sale, or importation of infringing products, or obtain licenses to the intellectual property found to have been infringed. We have also incurred, and expect to continue to incur, significant legal costs in conducting these lawsuits, including the appeals of the case we are defending, and our involvement in this litigation and any future intellectual property litigation could adversely affect sales and divert the efforts and attention of our technical and management personnel, whether or not such litigation is resolved in our favor. Thus, even if we are successful in these lawsuits, the benefits of this success may fail to outweigh the significant legal costs we will have incurred.

#### Risks Related to Laws and Regulations
*Changes in tax rules and regulations, changes in interpretation of tax rules and regulations, or unfavorable assessments from tax audits may increase the amount of taxes we are required to pay*. Our operations are subject to income and transaction taxes in the United States and in multiple foreign jurisdictions and to review or audit by the U.S. Internal Revenue Service and state, local and foreign tax authorities. In addition, the United States, countries in Asia and other countries where we do business have recently enacted or are considering changes in relevant tax, accounting and other laws, regulations and interpretations, including changes to tax laws applicable to multinational companies. For example, on July 4, 2025, the United States enacted federal tax legislation commonly referred to as the "One Big Beautiful Bill Act", which, among other changes, allows domestic research and development expenditures to be expensed for tax years beginning on or after January 1, 2025 and modifies certain international tax provisions for tax years starting on or after January 1, 2026. This legislation or other potential changes could adversely affect our effective tax rates or result in other costs to us.

The EU member states formally adopted the EU's Pillar Two Directive, which was established by the Organization for Economic Cooperation and Development (the "OECD"), and which generally provides for a 15 per cent minimum effective tax rate for multinational corporations, in all jurisdictions in which they operate ("Pillar Two"). However, on January 5, 2026, the OECD announced a "side-by-side" elective safe harbor that exempts U.S.-parented multinational corporations from certain provisions of Pillar Two for fiscal years beginning on or after January 1, 2026.

The foregoing items could have a material effect on our business, cash flow, results of operations or financial conditions.

*Changes in environmental laws and regulations, including with respect to energy consumption and climate change, may have a negative impact on our business*. Changing environmental regulations and the timetable to implement them continue to impact our customers' demand for our products. Currently we have limited visibility into our customers' strategies to implement these changing environmental regulations into their business. The inability to accurately determine our customers' strategies could increase our inventory costs related to obsolescence.

The semiconductor industry is subject to environmental regulations, particularly those that control and restrict the sourcing, use, transportation, storage, and disposal of certain mineral, chemicals, and materials used in the semiconductor manufacturing process. We expect the heightened worldwide awareness regarding climate change and the environmental impact to continue, which may result in new environmental laws and regulations that could affect us, our suppliers and/or our customers. New environmental laws and regulations could require us or our suppliers to obtain alternative materials that may increase our costs more or be less available, which may adversely affect our operating results.

Additionally, the heightened worldwide awareness regarding climate change could also result in risks such as shifting customer preferences. Changing customer preferences may result in increased expectations regarding our solutions, products, and services, including the use of packaging materials and other components in our products and their environmental impact. These expectations may cause us to incur additional costs or make other changes to our operations to respond to them, which could adversely affect our financial results. If we fail to manage transition risks and customer expectations in an effective manner, customer demand for our solutions, products, and services could diminish, and our profitability could suffer. Concerns over climate change, as well as the adoption of new laws or regulations, may also impact market dynamics and may result in shifts in customer expectations, preferences, or requirements, which may require us to change our practices or incur increased costs or adversely impact customer demand for our products and services.

#### General Risk Factors
*Current or potential war, domestic or international conflict, political or social instability, or military actions could adversely affect our business.* Like other U.S. companies, our business and operating results are subject to uncertainties arising out of economic consequences of current and potential military actions or terrorist activities and associated political instability, and the impact of heightened security concerns on domestic and international travel and

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commerce. These uncertainties could also lead to delays or cancellations of customer orders, a general decrease in corporate spending or our inability to effectively market and sell our products. Any of these results could substantially harm our business and results of operations, causing a decrease in our revenue.

*We are exposed to risks associated with acquisitions and strategic investments*. We have made, and in the future intend to make, acquisitions of, and investments in, companies, technologies or products in existing, related or new markets. Acquisitions involve numerous risks, including but not limited to:

● inability to realize anticipated benefits, which may occur due to any of the reasons described below, or for other unanticipated reasons;

● the risk of litigation or disputes with customers, suppliers, partners or stockholders of an acquisition target arising from a proposed or completed transaction;

● impairment of acquired intangible assets and goodwill as a result of changing business conditions, technological advancements or worse-than-expected performance, which would adversely affect our financial results; and

● unknown, underestimated and/or undisclosed commitments, liabilities or issues not discovered in our due diligence of such transactions.

We also in the future may have strategic relationships with other companies, which may decline in value and/or not meet desired objectives. The success of these strategic relationships depends on various factors over which we may have limited or no control and requires ongoing and effective cooperation with strategic partners. Moreover, these relationships are often illiquid, such that it may be difficult or impossible for us to monetize such relationships.

*Our inability to successfully integrate, or realize the expected benefits from, our acquisitions could adversely affect our results.* We have made, and in the future intend to make, acquisitions of other businesses and with these acquisitions there is a risk that integration difficulties may cause us not to realize expected benefits. The success of the acquisitions could depend, in part, on our ability to realize the anticipated benefits and cost savings (if any) from combining the businesses of the acquired companies and our business, which may take longer to realize than expected.

*Securities laws and regulations, including potential risk resulting from our evaluation of internal controls over financial reporting, will continue to impact our results*. Complying with the requirements of the federal securities laws, state laws, stock exchange requirements, and other legal requirements has imposed significant legal and financial compliance costs, and are expected to continue to impose significant costs and management burden on us. These rules and regulations also may make it more expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced coverage or incur substantially higher costs to obtain coverage. These rules and regulations could also make it more difficult for us to attract and retain qualified executive officers and members of our board of directors, particularly qualified members to serve on our audit committee.

Additionally, because these laws, regulations and standards are expected to be subject to varying interpretations, their application in practice may evolve over time as new guidance becomes available. This evolution may result in continuing uncertainty regarding compliance matters and additional costs necessitated by ongoing revisions to our disclosure and governance practices.

*We have been and may be subject to or involved in litigation, threatened litigation or other disputes, the outcome of which may be difficult to predict, and which may be costly to defend, divert management attention, require us to pay damages or other payments, or restrict the operation of our business.* From time to time, we have been and may be subject to disputes and litigation, with and without merit, that may be costly and which may divert the attention of our management and our resources in general. Such disputes and litigation are various and may include, but are not limited to, indemnification claims, claims of alleged infringement of patents, trademarks, copyrights and other IP rights, claims of alleged non-compliance with contract provisions and claims related to alleged violations of laws and regulations. The results of complex legal proceedings are difficult to predict. Moreover, complaints filed against us may not specify the amount of damages that plaintiffs seek, and we therefore may be unable to estimate the possible range of damages that might be incurred should these lawsuits be resolved against us. Even if we are able to estimate losses related to these actions, the ultimate amount of loss may be materially higher than our estimates. Any resolution of litigation, threatened litigation, or other disputes, could involve the payment of damages, payments or expenses by us, which may be significant or involve an agreement with terms that restrict the operation of our business. Even if any future lawsuits are not resolved against us, the costs of defending such lawsuits may be significant. It is possible that we will not be able to obtain insurance coverage for our litigation and disputes in the amounts and for the risks we seek at policy costs and terms we desire.

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Allegations made in the course of legal proceedings may also harm our reputation, regardless of whether there is merit to such claims. We can provide no assurance that additional litigation will not be filed against us in the future. The impacts of litigation, threatened litigation or other disputes could be harmful to our business and results of operations.

#### Item 1B. Unresolved Staff Comments.
Not applicable.

#### Item 1C. Cybersecurity.

#### Cybersecurity Risk Assessment, Identification and Management
We are committed to protecting our information technology ("IT") infrastructure, including computers, systems, corporate networks and sensitive data, from unauthorized access or attack. We have established global IT policies as well as IT security management control procedures designed to assess, identify, and manage material risks from cybersecurity threats, including but not limited to:

● Creating information security awareness among our employees and business partners and defining responsibilities among them;

● Implementing controls to identify IT risks and monitor the use of our systems and information resources;

● Establishing key policies and processes to adequately and timely respond to security threats;

● Maintaining disaster recovery and business continuity plans; and

● Emphasizing compliance with applicable laws, regulations and contractual obligations regarding the management of information security.

These policies and controls procedures discussed in more detail below, are an integrated component of our enterprise risk management assessment processes. We routinely review and assess our business groups and systems to identify and prioritize areas of risk, including cybersecurity risk. The results of these assessments and progress against prioritized goals are presented to a committee of our board of directors each quarter.

We have incurred and may in the future incur significant costs in order to implement, maintain, and/or update security systems we believe are necessary to protect our IT infrastructure. We deploy technical safeguards that are designed to protect our systems from cybersecurity threats, including firewalls, intrusion prevention, and intrusion detection systems. We have established disclosure controls and procedures to address cybersecurity events, which include elements relating to comprehensive analysis of events and communication within the company, as well as addressing potential disclosure obligations arising from security breaches.

We have partnered with third parties to support our information security systems and processes, and to help design, build, test, implement and maintain them. Annual risk assessments are conducted by third party consultants to help ensure that risks to our IT infrastructure are minimized or eliminated.

We rely on products and services provided by third parties for portions of our IT infrastructure, including business management, operations and finance systems. These providers may also experience breaches and attacks on their products which may impact our systems. Further we may also face additional cybersecurity risk due to error or intentional misconduct by contractors and other third-party service providers related to the use of these systems as part of our IT infrastructure.

We have a third-party security policy in place to identify, manage and oversee the potential material risks from threats associated with the use of third-party service providers. We evaluate vendors and consider amongst other factors the criticality of services and sensitivity of information that is within the scope of the services to be provided and manage risk accordingly. Our internal legal department reviews all IT Service Agreements with input from the IT department to ensure that services, terms and conditions in the agreement are suitable. Our IT department performs regular monitoring of vendor services as part of its' on-going review and monitoring of vendors. As part of our policy, we monitor termination of agreements with vendors designed to ensure that access to Company information is appropriately terminated in a timely manner. Unauthorized network intrusions or other significant information security incidents against third-party systems used by the Company internally are handled in the same manner as internal systems. However as described in Part I. Item 1A. Risk Factors of this Annual Report on Form 10-K under "Risks Related to the Operation and Growth of Our Business", we have limited insight into the data privacy or security of third-party service providers and our response may be limited or more difficult because we may not have direct access to their systems.

Although we believe we have adequate resources and sufficient policies, procedures, and oversight in place to identify and manage IT security risks related to our business operations, there can be no guarantee that our policies and

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procedures will be properly followed in every instance or that those policies and procedures will be effective. For a description of the risks from cybersecurity threats that may materially affect the Company and how they may do so, see our risk factors under Part I. Item 1A. Risk Factors in this Annual Report on Form 10-K under "Risks Related to the Operation and Growth of Our Business."

#### Management Oversight
Our IT infrastructure and the assessment and management of associated risks are primarily the responsibility of our Chief Information Security Officer ("CISO"). Our CISO's additional responsibilities include hiring appropriate personnel, helping to integrate cybersecurity risks into the Company's overall risk management strategy, and communicating updates regarding IT/Information security key priorities to relevant personnel including management and the board.

Our CISO has served in that position since 2018. Our CISO has extensive experience serving in executive and senior IT leadership positions over the past 25 years including eleven years at Cavium in a succession of information technology roles, including vice president of business systems, two years at ServiceNow as vice president of IT Applications, and eight years overseeing worldwide IT infrastructure, IT operations and information security at Pinnacle Systems.

We have in place an Incident Response Procedure policy to define our response to unauthorized network intrusions or other significant information security incidents, collectively cybersecurity incidents. The policy defines the standard operational process to determine if an event observed on a system could have caused a breach of the system or a compromise of sensitive data. This policy serves to establish a formal process to report incidents and track response activities. It also defines escalation processes within the Information Security team and further escalation to our Cybersecurity Incident Response Team. It is the responsibility of the Cybersecurity Incident Response team to determine if an incident is material. The Cybersecurity Incident Response Team consists of members from functional groups across our organization including executive management, IT, the CISO, legal, finance and operations. We may include other individuals, including third parties, as appropriate depending on the nature of the incident and system(s) involved. This cross-functional group allows us to address the operational impacts of cybersecurity incidents as and when they occur and to guide decisions related to materiality and, if applicable, disclosure. The Cybersecurity Incident Response Team is responsible for extrapolating cybersecurity incident event information into quantitative and qualitative impacts as they relate to our financial condition and operations. In addition, the Company's Incident Response Procedure policy includes reporting to the board of directors for certain cybersecurity incidents.

#### Board Governance
Our full board of directors oversees our risk management including but not limited to IT and cybersecurity policies, procedures, and risk assessments. One of the key functions of our board of directors is informed oversight of our various processes for managing risk. An overall review of risk is inherent in our board of directors' ongoing consideration of our long-term strategies, transactions and other matters presented to and discussed by the board of directors. This includes a discussion of the likelihood and potential magnitude of various risks, including cybersecurity risks, and any actions management has taken to limit, monitor or control those risks.

In October 2025, the board established a Cybersecurity Committee and adopted a Charter of the Cybersecurity Committee. Pursuant to that charter the primary purpose of the Committee is to assist the Board in fulfilling its oversight responsibilities with respect to the Company's information technology use and data security, including, but not limited to, enterprise cybersecurity, privacy, data collection and protection and compliance with information security and data protection laws. Our management reports to the Cybersecurity Committee on information security matters on a quarterly basis, or more frequently as needed. The Cybersecurity Committee reports updates to the board of directors as applicable.

At each quarterly Cybersecurity Committee meeting, the committee members receive the quarterly cybersecurity board update that is prepared by our CISO. The report provides a comprehensive cybersecurity update for the past quarter, usually including topics such as details on threat landscape, incident response, security metrics and performance, compliance and regulatory updates, cybersecurity investments and budget, employee security awareness and trainings, vendor risk management updates, business continuity and disaster recovery updates, and an update on cybersecurity strategy, projects and roadmap.

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#### Item 2. Properties.
We own our principal executive, administrative, manufacturing and technical offices which are located in San Jose, California. We also own an R&D facility in New Jersey, a design center in Germany and a multipurpose office building in Switzerland. We lease administrative office space in Singapore, the United Kingdom, the Philippines, New York, and Malaysia, and sales offices in various countries around the world to accommodate our sales force. We believe that our current facilities are sufficient for our near-term needs; however, if headcount increases above capacity we may need to lease additional space.

#### Item 3. Legal Proceedings.
Information with respect to this item may be found in Note 14, *Legal Proceedings and Contingencies,* in our Notes to Consolidated Financial Statements included later in this Annual Report on Form 10-K, which information is incorporated here by reference.

#### 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.
Our common stock trades on the Nasdaq Global Select Market under the symbol "POWI".

As of January 30, 2026, there were approximately 68 stockholders of record. Because brokers and other institutions hold many of our shares on behalf of stockholders, we are unable to estimate the total number of stockholders represented by these record holders.

#### Issuer Purchases of Equity Securities
From time to time our board of directors has authorized the use of funds to repurchase shares of our common stock. Authorization of future repurchase programs is at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, business conditions and other factors. In April 2025, our board of directors authorized the use of an additional $50.0 million for the repurchase of our common stock, with repurchases to be executed according to pre-defined price/volume guidelines.

As of December 31, 2025, we had exhausted our repurchase authorization and had no amounts available for future stock repurchases. Authorization of future repurchase programs is at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, business conditions and other factors.

The following table summarizes repurchases of our common stock made under our publicly announced repurchase program during the fourth quarter of fiscal 2025:

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| | | | | |
|:---|:---|:---|:---|:---|
| **Period** | <br>**Total**<br>**Number of**<br>**Shares Purchased** | <br><br>**Average**<br>**Price Paid**<br>**Per Share** | **Total Number of**<br>**Shares Purchased**<br>**as Part of**<br>**Publicly Announced**<br>**Plans or Programs** | **Approximate Dollar Value**<br>**that May Yet be**<br>**Repurchased Under the**<br>**Plans or Program**<br>**(In millions)** |
| October 1, 2025 to October 31, 2025 |  |  |  |  |
| November 1, 2025 to November 30, 2025 |  |  |  |  |
| December 1, 2025 to December 31, 2025 |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total |  |  |  |  |

---

#### Dividends
The declaration of any future cash dividend is at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, business conditions and other factors, as well as a determination that cash dividends are in the best interest of our stockholders. See the section titled "Item 7. Management's Discussion and Analysis—Liquidity and Capital Resources—Dividends" included in this Annual Report on Form 10-K for the amount of cash dividends we have paid.

#### Recent Sales of Unregistered Securities
None.

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#### Performance Graph (1)
The following graph shows the cumulative total return on an investment of $100 in cash on December 31, 2020, through December 31, 2025, in our common stock, the Nasdaq Composite Index and the PHLX Semiconductor Sector Index (SOX) and assuming that all dividends were reinvested. The stockholder return shown on the graph below is not necessarily indicative of future performance, and we do not make or endorse any predictions as to future stockholder returns.

![Graphic](powi-20251231x10k001.jpg)

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Company/Index** | **12/31/2020** | **12/31/2021** | **12/31/2022** | **12/31/2023** | **12/31/2024** | **12/31/2025** |
| Power Integrations, Inc. | 100.00 | 114.13 | 88.91 | 102.74 | 78.10 | 45.83 |
| Nasdaq Composite | 100.00 | 122.18 | 82.43 | 119.22 | 154.48 | 187.14 |
| PHLX Semiconductor (SOX) | 100.00 | 142.85 | 93.02 | 155.35 | 186.98 | 268.23 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) This Section is not "soliciting material," is not deemed "filed" with the SEC and is not to be incorporated by reference in any filing of Power Integrations under the Securities Act of 1933, as amended, or the Exchange Act, whether made before or after the date hereof and irrespective of any general incorporation language in any such filing.

**Item 6. [Reserved]**

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#### Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations.
*This section of this Form 10-K generally discusses 2025 and 2024 items and year-to-year comparisons between 2025 and 2024. Discussions of 2023 items and year-to-year comparisons between 2024 and 2023 are not included in this Form 10-K, and can be found in "Management's Discussion and Analysis of Financial Condition and Results of Operations" in Part II, Item 7 of the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2024. The following discussion and analysis has been prepared as an aid to understanding our financial condition and results of our operations. It should be read in conjunction with the consolidated financial statements and the notes to those statements included elsewhere in this Annual Report on Form 10-K. This discussion contains forward-looking statements that involve risks and uncertainties. See "Cautionary Note Regarding Forward-Looking Statements" at the beginning of this Form 10-K. Our actual results could differ materially from those contained in these forward-looking statements due to a number of factors, including those discussed in Part I, Item 1A "Risk Factors" and elsewhere in this Annual Report on Form 10-K.*

#### Business Overview
We design, develop and market analog and mixed-signal integrated circuits ("ICs") and other electronic components and circuitry used in high-voltage power conversion. Our products are used in power converters that convert electricity from a high-voltage source to the type of power required for a specified downstream use. In most cases, this conversion entails, among other functions, converting alternating current ("AC") to direct current ("DC") or vice versa, reducing or increasing the voltage, and regulating the output voltage and/or current according to the customer's specifications.

A large percentage of our products are ICs used in AC-DC power supplies, which convert the high-voltage AC from a wall outlet to the low-voltage DC required by most electronic devices. Power supplies incorporating our products are used with all manner of electronic products including industrial controls, "smart" utility meters, appliances, air conditioners, battery-powered tools, building-automation, or "internet-of-things" applications such as networked thermostats and security devices, and mobile devices such as smartphones, tablets and notebook computers. Variations of our power-supply ICs are used for high-voltage power conversion in electric vehicles ("EVs"). We also supply high-voltage LED drivers, which are AC-DC ICs specifically designed for lighting applications that utilize light-emitting diodes, and motor-driver ICs for brushless DC ("BLDC") motors used in consumer appliances, HVAC systems, ceiling fans and a variety of industrial applications.

We also offer high-voltage gate drivers—either standalone ICs or circuit boards containing ICs, electrical isolation components and other circuitry—used to operate high-voltage switches such as insulated-gate bipolar transistors ("IGBTs") and silicon-carbide ("SiC") MOSFETs. These combinations of switches and drivers are used for power conversion in high-power applications (i.e., power levels ranging from approximately 100 kilowatts up to gigawatts) such as industrial motors, solar- and wind-power systems, EVs and high-voltage DC transmission systems.

Our business and financial performance depends significantly on worldwide economic conditions. We face global macroeconomic challenges and risks including the effects of the conflicts in Ukraine and the Middle East, potential risks stemming from tensions between China and Taiwan and between China and Western countries, volatility in exchange rates, cyclical demand patterns common for our industry, inflation, tariffs and other risks associated with the global trade environment.

Our net revenue was $443.5 million and $419.0 million in 2025 and 2024, respectively. The increase in revenue in 2025 was primarily driven by higher sales in the industrial end-market, including growth in sales of our gate-driver products, as well as increased sales of our ICs for a broad range of applications including electronic utility meters, electric vehicles and battery-powered tools.

Our top ten customers, including distributors that resell to OEMs and merchant power supply manufacturers, accounted for approximately 81% and 79% of net revenue in 2025 and 2024, respectively. International sales represented approximately 98% of net revenue in each of 2025 and 2024.

Because our industry is intensely price-sensitive, our gross margin (gross profit divided by net revenue) is subject to change based on the relative pricing of solutions that compete with ours. Variations in product mix, end-market mix and customer mix can also cause our gross margin to fluctuate. Also, because we purchase a large percentage of our silicon wafers from foundries located in Japan, our gross margin is influenced by fluctuations in the exchange rate between the U.S. dollar and the Japanese yen. All else being equal, a 10% change in the value of the U.S. dollar compared to the Japanese yen would eventually result in a corresponding change in our gross margin of approximately 1.5%; this sensitivity may increase depending on the percentage of our wafer supply that we purchase from Japanese suppliers. Also, although

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our wafer fabrication and assembly operations are outsourced, as are most of our test operations, a portion of our production costs are fixed in nature. As a result, our unit costs and gross profit margin are impacted by the volume of units we produce.

Our gross profit, defined as net revenue less cost of revenue, was $241.6 million or 55% of net revenue in 2025, compared to $224.8 million or 54% of net revenue in 2024. Our gross margin increased in 2025 due to manufacturing efficiencies including the benefit of higher unit volumes on our manufacturing costs per unit, and favorable end-market mix with a greater percentage of sales coming from higher-margin market categories.

Total operating expenses in 2025 were $231.5 million, an increase of $24.6 million as compared to 2024, primarily due to higher stock-based compensation expense as a result of an award modification associated with the retirement of our former chief executive officer (refer to Note 7, *Stock-Based Compensation*, in our Notes to Consolidated Financial Statements for details) and expenses incurred related to an employee litigation matter (refer to Note 14, *Legal Proceedings and Contingencies*, in our Notes to Consolidated Financial Statements for details) as well as higher expenses for outside engineering services and legal services.

#### Critical Accounting Policies and Estimates
The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America, or U.S. GAAP, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. On an ongoing basis, we evaluate our estimates, including those listed below. We base our estimates on historical facts and various other assumptions that we believe to be reasonable at the time the estimates are made. Actual results could differ from those estimates.

Our critical accounting policies which reflect our more significant estimates are as follows:

\* revenue recognition;

\* inventory valuation.

Our critical accounting policies are important to the portrayal of our financial condition and results of operations, and require us to make judgments and estimates about matters that are inherently uncertain. A brief description of our critical accounting policies and material estimates is set forth below. For more information regarding our accounting policies, see Note 2, *Summary of Significant Accounting Policies and Recent Accounting Pronouncements*, in our Notes to Consolidated Financial Statements in this Annual Report on Form 10-K.

***Revenue recognition***

Product revenue consists of sales to original equipment manufacturers, or OEMs, merchant power supply manufacturers and distributors. We apply the provisions of Accounting Standards Codification ("ASC") 606-10, *Revenue from Contracts with Customers*, and all related appropriate guidance. We recognize revenue under the core principle to depict the transfer of control to our customers in an amount reflecting the consideration we expect to be entitled. In order to achieve that core principle, we apply the following five-step approach: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when a performance obligation is satisfied.

Sales to most distributors are made under terms allowing certain price adjustments and limited rights of return (known as "stock rotation") of our products held in their inventory or upon sale to their end customers. We recognize revenue from sales to distributors upon the transfer of control to the distributor. Frequently, distributors need to sell at a price lower than the standard distribution price in order to win business. At the time the distributor invoices its customer or soon thereafter, the distributor submits a "ship-and-debit" price adjustment claim to us to adjust the distributor's cost from the standard price to the pre-approved lower price. After we verify that the claim is pre-approved, we issue a credit memo to the distributor for the ship-and-debit claim. In determining the transaction price, we consider ship-and-debit price adjustments to be variable consideration. At the time revenue is recognized on sales to distributors, future ship-and-debit price adjustments are unknown and therefore subject to uncertainty. Such price adjustments are estimated using the expected-value method based on an analysis of actual ship-and-debit claims, at the distributor and product level, over a period of time considered adequate to account for current pricing and business trends. The reserve for ship-and-debit claims increased by $7.2 million between December 31, 2025 and December 31, 2024, primarily due to higher inventory levels held by distributors in our industrial end-market. Historically, actual price adjustments for ship-and-debit claims have not materially differed from those estimated when determining the transaction price. To the extent future ship-and-

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debit claims significantly exceed amounts estimated, there could be a material impact on our revenue and results of operations.

Stock rotation rights grant the distributor the ability to return certain specified amounts of inventory. Stock rotation returns are an additional form of variable consideration and are also estimated using the expected value method based on historical return rates. Historically, these distributor stock rotation returns have not been material.

***Inventory valuation***

The bulk of our inventory is held in wafers, which combined with the fungibility of our products across customers and applications results in a lower risk of obsolescence. We routinely monitor the quality of our on-hand wafers to ensure that performance remains unchanged over time. When evaluating the adequacy of our provision for excess and obsolete inventory, we identify excess and obsolete products and also analyze historical usage, forecasted demand, current economic trends and historical write-offs**.** This write-down is reflected as a reduction to inventory in the consolidated balance sheets and an increase in cost of revenue in our consolidated statements of income. If actual market conditions are less favorable than our assumptions, we may be required to take additional write-downs, which could adversely impact our cost of revenue and operating results. Historically these write-downs have not been material.

#### Results of Operations
The following table sets forth statement of income data as a percentage of net revenue for the periods indicated:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
|  | **2025** | **2024** | **2023** |
| Net revenue | 100.0% | 100.0% | 100.0% |
| Cost of revenue | 45.5 | 46.4 | 48.5 |
| Gross profit | 54.5 | 53.6 | 51.5 |
| Operating expenses: |  |  |  |
| &nbsp;&nbsp;Research and development | 22.8 | 24.1 | 21.6 |
| &nbsp;&nbsp;Sales and marketing | 15.3 | 16.2 | 14.5 |
| &nbsp;&nbsp;General and administrative | 9.6 | 9.1 | 7.5 |
| &nbsp;&nbsp;Other operating expenses | 4.4 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 52.2 | 49.4 | 43.6 |
| Income from operations | 2.3 | 4.2 | 7.9 |
| Other income | 2.4 | 3.1 | 2.4 |
| Income before income taxes | 4.7 | 7.3 | 10.3 |
| Provision (benefit) for income taxes | (0.3) | (0.4) | (2.2) |
| Net income | 5.0%  | 7.7%  | 12.5% |

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#### Comparison of Years Ended December 31, 2025 and 2024
*Net revenue.* Net revenue consists of revenue from product sales, which are calculated net of returns and allowances. Revenue increased in 2025 compared to the prior year due primarily to higher sales in the industrial end-market.

Our approximate net revenue mix by end-markets served in 2025, 2024 and 2023 is as follows:

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| | | | |
|:---|:---|:---|:---|
| **End Market** | **2025** | **2024** | **2023** |
| Communications | 12% | 12% | 29% |
| Computer | 13% | 14% | 12% |
| Consumer | 37% | 39% | 27% |
| Industrial | 38% | 35% | 32% |

---

International sales, consisting of sales to customers outside of the United States of America based on "bill to" customer locations, were $436.6 million and $412.5 million in 2025 and 2024, respectively, representing 98% of net revenue in both 2025 and 2024. Although power converters using our products are distributed to end markets worldwide, most are manufactured in Asia. As a result, sales to this region represented approximately 84% of our net revenue in both 2025 and 2024. We expect international sales, and sales to the Asia region in particular, to continue to account for a large portion of our net revenue in the future.

Sales to distributors accounted for 69% and 70% of our net revenue in 2025 and 2024, respectively. Direct sales to OEMs and merchant power supply manufacturers accounted for the remainder in each of the corresponding years.

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The following customers represented 10% or more of our net revenue for the respective years:

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| | | | |
|:---|:---|:---|:---|
| **Customer** | **2025** | **2024** | **2023** |
| Avnet | 32% | 30% | 27% |
| Salcomp Group | 11% | \* | 10% |
| Honestar Technologies Co., Ltd. | \* | 11% | 18% |

---

\*Total customer revenue was less than 10% of net revenue.

No other customers accounted for 10% or more of our net revenue in these years.

*Gross profit.* Gross profit is net revenue less cost of revenue. Our cost of revenue consists primarily of the purchase of wafers from our contracted foundries, the assembly, packaging and testing of our products by sub-contractors, product testing performed in our own facility, overhead associated with the management of our supply chain and the amortization of acquired intangible assets. Gross margin is gross profit divided by net revenue. The following table compares gross profit and gross margin for the years ended December 31, 2025, 2024 and 2023:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(dollars in millions)** | **2025** | **Change** | **2024** | **Change** | **2023** |
| Gross profit | $241.6 | 7.5% | $224.8 | (1.8)% | $229.0 |
| Gross margin | 54.5% |  | 53.6% |  | 51.5% |

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Our gross margin increased in 2025 as compared to 2024 due to manufacturing efficiencies including the benefit of higher unit volumes on our manufacturing costs per unit, and favorable end-market mix with a greater percentage of sales coming from higher-margin market categories.

*Research and development expenses.* Research and development ("R&D") expenses consist primarily of employee-related expenses including salaries and stock-based compensation, as well as expensed material and facility costs associated with the development of new processes and products. We also record R&D expenses for prototype wafers related to new products until the products are released to production. The following table compares R&D expenses for the years ended December 31, 2025, 2024 and 2023:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(dollars in millions)** | **2025** | **Change** | **2024** | **Change** | **2023** |
| R&D expenses | $101.1 | 0.3% | $100.8 | 4.9% | $96.1 |
| Headcount (at period end) | 301 |  | 311 |  | 282 |

---

R&D expenses increased in 2025 compared to 2024 primarily due to higher salaries and expenses for outside engineering services, partially offset by decreased stock-based compensation expense.

*Sales and marketing expenses.* Sales and marketing ("S&M") expenses consist primarily of employee-related expenses, including salaries and stock-based compensation, and commissions to sales representatives, as well as facilities expenses, including expenses associated with our regional sales and support offices. The following table compares sales and marketing expenses for the years ended December 31, 2025, 2024 and 2023:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(dollars in millions)** | **2025** | **Change** | **2024** | **Change** | **2023** |
| Sales and marketing expenses | $68.0 | 0.2% | $67.8 | 5.0% | $64.6 |
| Headcount (at period end) | 335 |  | 330 |  | 317 |

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S&M expenses in 2025 were flat compared to 2024.

*General and administrative expenses.* General and administrative ("G&A") expenses consist primarily of employee-related expenses, including salaries and stock-based compensation expenses for administration, finance, human resources and general management, as well as consulting, professional services, legal and auditing expenses. The table below compares G&A expenses for the years ended December 31, 2025, 2024 and 2023:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(dollars in millions)** | **2025** | **Change** | **2024** | **Change** | **2023** |
| G&A expenses | $42.7 | 11.8% | $38.2 | 15.0% | $33.2 |
| Headcount (at period end) | 84 |  | 84 |  | 79 |

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G&A expenses increased in 2025 compared to 2024 primarily due to increased professional and legal services and higher salary- and benefit-related expenses.

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*Other operating expenses.* Other operating expenses were $19.7 million in 2025. We recognized expenses of $11.3 million stemming from an employee litigation matter (refer to Note 14, *Legal Proceedings and Contingencies*, in our Notes to Consolidated Financial Statements for details). In addition, we recognized stock-based compensation expense of $8.4 million as a result of an award modification associated with the retirement of our former chief executive officer (refer to Note 7, *Stock-Based Compensation*, in our Notes to Consolidated Financial Statements for details).

*Other income*. Other income consists primarily of interest income earned on cash and cash equivalents, marketable securities and other investments, and the impact of foreign exchange gains or losses. The following table compares other income for the years ended December 31, 2025, 2024 and 2023:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(dollars in millions)** | **2025** | **Change** | **2024** | **Change** | **2023** |
| Other income | $10.8 | (15.9)% | $12.8 | 18.2% | $10.8 |

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Other income decreased in 2025 primarily due to lower interest income.

*Provision (Benefit) for income taxes.* Benefit for income taxes represents federal, state and foreign taxes. The following table compares the provision (benefit) for income taxes for the years ended December 31, 2025, 2024 and 2023:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **(dollars in millions)** | **2025** | **Change** | **2024** | **Change** | **2023** |
| Provision (benefit) for income taxes | $(1.1) | (24.7)% | $(1.5) | (84.9)% | $(9.8) |
| Effective tax rate | (5.3)% |  | (4.8)% |  | (21.4)% |

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In 2025 and 2024, our effective tax rate was lower than the statutory U.S. federal income-tax rates of 21% due to the geographic distribution of our world-wide earnings in lower tax jurisdictions, the impact of federal research tax credits and the recognition of excess tax benefits related to share-based compensation. Additionally, in 2025 and 2024, our effective tax rate was favorably impacted by discrete items associated with the release of unrecognized tax benefits caused by an expiration in the statute of limitations on these positions. These benefits were offset by U.S. tax on foreign income, known as Net Controlled Foreign Corporation Tested Income ("NCTI"). The primary jurisdiction from which our foreign earnings are derived is the Cayman Islands, which is a non-taxing jurisdiction. Income earned in other foreign jurisdictions was not material. We have not been granted any incentivized tax rates and do not operate under tax holidays in any jurisdiction.

The rate was further reduced by the release of federal uncertain tax position caused by a expiration in the statute of limitations on these positions. These benefits were partially offset by foreign income subject to U.S. tax, known as Net Controlled Foreign Corporation Tested Income ("NCTI"). The Company's primary jurisdiction where foreign earnings are derived is the Cayman Islands, which is a non-taxing jurisdiction. Income earned in other foreign jurisdictions was not material. The Company has not been granted any incentivized tax rates and does not operate under any tax holidays in any jurisdiction.

On July 4, 2025, the One Big Beautiful Bill Act ("OBBBA") was enacted in the U.S. The OBBBA includes provisions modifying the corporate income tax code, including the immediate expensing of domestic research and development expenditures for tax purposes, 100% bonus depreciation for qualified assets, and an increase in the statutory tax rate on certain foreign earnings from 10.5% to 12.6% (effective in the fiscal year 2026). We have elected to account for NCTI, under the deferred method. The deferred tax amounts recorded are based on the evaluation of temporary differences that are expected to reverse as NCTI is incurred in future periods. As a result, we remeasured our estimated deferred tax balances related to NCTI for the changes in the tax rate and recorded an expense of $0.5 million during the third quarter of 2025. For additional details, refer to Note 11, *Provision* (*Benefit) for Income Taxes*, in our Notes to Consolidated Financial Statements included in this Annual Report on Form 10-K.

#### Liquidity and Capital Resources
We had $249.5 million in cash, cash equivalents and short-term marketable securities at December 31, 2025 compared to $300.0 million at December 31, 2024. As of December 31, 2025 and 2024, we had working capital, defined as current assets less current liabilities, of approximately $388.0 million and $458.7 million, respectively.

We have a Credit Agreement with Wells Fargo Bank, National Association (the "Credit Agreement") that provides us with a $75.0 million revolving line of credit to use for general corporate purposes with a $20.0 million sub-limit for the issuance of standby and trade letters of credit. The Credit Agreement was amended on June 7, 2021, to provide an alternate borrowing rate as a replacement for LIBOR and extend the termination date from April 30, 2022 to June 7, 2026, with all other terms remaining the same. The Credit Agreement was amended with an effective date of

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June 28, 2023 to include the Secured Overnight Financing Rates as interest rate benchmark rates, with all other terms remaining the same. Our ability to borrow under the revolving line of credit is conditioned upon our compliance with specified covenants, including reporting and financial covenants, primarily a minimum liquidity measure and a debt to earnings ratio, with which we are currently in compliance. The Credit Agreement terminates on June 7, 2026; all advances under the revolving line of credit will become due on such date, or earlier in the event of a default. As of December 31, 2025 and 2024, we had no advances outstanding under the Credit Agreement.

*Cash from Operating Activities*

Our operating activities generated cash of $111.5 million and $81.2 million in the years ended December 31, 2025 and 2024, respectively. We generate cash primarily from operating activities in the ordinary course of business.

In 2025, our net income was $22.1 million, which included non-cash expenses of $27.2 million of depreciation, $39.7 million of stock-based compensation, $0.9 million decrease in deferred income taxes and $0.8 million of intangibles amortization partially offset by a $1.1 million of accretion of discount on marketable securities. Sources of cash included a $9.3 million decrease in accounts receivable, a $10.5 million increase in taxes payable and accrued liabilities, a $3.3 million increase in accounts payable (excluding payables related to property and equipment) due to timing of payments. These sources of cash were partially offset by a $1.3 million increase in inventories.

In 2024, our net income was $32.2 million, which included non-cash expenses of $33.3 million of depreciation, $35.1 million of stock-based compensation and $1.3 million of intangibles amortization partially offset by a $8.4 million increase in deferred income taxes. Sources of cash included a $3.5 million increase in accounts payable (excluding payables related to property and equipment) due to timing of payments and a $4.0 million decrease in prepaid expenses and other assets. These sources of cash were partially offset by a $12.3 million increase in accounts receivable, a $2.4 million increase in inventories, and a $3.5 million decrease in taxes payable and accrued liabilities.

*Cash from Investing Activities*

Our investing activities in the year ended December 31, 2025, generated $36.2 million of cash, consisting primarily of $60.5 million of proceeds from sales and maturities of marketable securities, net of purchases. This amount was partially offset by the use of $24.4 million for purchases of property and equipment, primarily production-related machinery and equipment.

Our investing activities in the year ended December 31, 2024, resulted in a $25.9 million net use of cash, consisting primarily of $17.3 million for purchases of property and equipment and $9.5 million for the Odyssey acquisition, partially offset by $0.9 million of proceeds from sales and maturities of marketable securities, net of purchases.

*Cash from Financing Activities*

Our financing activities in the year ended December 31, 2025, resulted in a $139.9 million net use of cash. Financing activities consisted primarily of $98.1 million for the repurchase of our common stock and $47.2 million for the payment of dividends to stockholders, partially offset by proceeds of $5.3 million from the issuance of common stock through our employee stock purchase plan.

Our financing activities in the year ended December 31, 2024, resulted in a $68.2 million net use of cash. Financing activities consisted primarily of $46.0 million for the payment of dividends to stockholders and $27.9 million for the repurchase of our common stock, partially offset by proceeds of $5.7 million from the issuance of common stock through our employee stock purchase plan.

*Dividends*

In October 2023, our board of directors declared dividends of $0.20 per share to be paid to stockholders of record at the end of each quarter in 2024.

In October 2024, our board of directors raised the cash dividend again with the declaration of five cash dividends of $0.21 per share to be paid to stockholders of record at the end of the fourth quarter in 2024 (in lieu of the $0.20 per share announced in October 2023) and at the end of each quarter in 2025.

In October 2025, our board of directors raised the quarterly cash dividend with the declaration of four cash dividends of $0.215 per share to be paid to stockholders of record at the end of each quarter in 2026.

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The declaration of any future cash dividend is at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, business conditions and other factors, as well as a determination that cash dividends are in the best interest of our stockholders.

*Stock Repurchases*

Over the years our board of directors has authorized the use of funds to repurchase shares of our common stock, including $50.0 million in each of October 2024 and April 2025, with repurchases to be executed according to pre-defined price/volume guidelines. In 2025, we repurchased a total of 2.0 million shares of the Company's common stock for $98.1 million, exhausting our repurchase authorization. Authorization of future repurchase programs is at the discretion of our board of directors and will depend on our financial condition, results of operations, capital requirements, business conditions and other factors.

*Capital Expenditures*

Cash paid for property and equipment in the year ended December 31, 2025 was $24.4 million. We expect capital expenditures in fiscal 2026 to be primarily for machinery and equipment for use in the manufacture of our products to support future growth. We expect to fund these capital expenditures with cash on hand as well as cash provided by future operations.

*Off-Balance-Sheet Arrangements*

As of December 31, 2025 and 2024, we did not have any off-balance-sheet arrangements or relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, which are typically established for the purpose of facilitating off-balance-sheet arrangements or other contractually narrow or limited purposes.

*Other Information*

Our cash, cash equivalents and investment balances may change in future periods due to changes in our planned cash outlays, including changes in incremental costs such as direct and integration costs related to future acquisitions. Current U.S. tax laws generally allow companies to repatriate accumulated foreign earnings without incurring additional U.S. federal taxes. Accordingly, as of December 31, 2025, our worldwide cash and marketable securities are available to fund capital allocation needs, including capital and internal investments, acquisitions, stock repurchases and/or dividends without incurring significant U.S. federal income taxes.

If our operating results deteriorate in future periods, either as a result of a decrease in customer demand or pricing pressures from our customers or our competitors, or for other reasons, our ability to generate positive cash flow from operations may be jeopardized. In that case, we may be forced to use our cash, cash equivalents and short-term investments, use our current financing or seek additional financing from third parties to fund our operations. We believe that cash generated from operations, together with existing sources of liquidity, will satisfy our projected working capital and other cash requirements for at least the next 12 months. Our uses of cash beyond the next 12 months will depend on many factors, including the general economic environment in which we operate and our ability to generate cash flow from operations, which are uncertain but include funding our operations and additional capital expenditures.

#### Contractual Obligations
As of December 31, 2025, we had the following non-cancelable contractual obligations:

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Payments Due by Period** | **Payments Due by Period** | **Payments Due by Period** | **Payments Due by Period** | **Payments Due by Period** |
| **(In thousands)** | <br>**Total** | **Less than 1**<br>**Year** | <br>**1 - 3 Years** | <br>**4 - 5 Years** | <br>**Over 5 Years** |
| Operating lease obligations<sup>(1)</sup> | $23712 | $4161 | $7774 | $6182 | $5595 |
| Purchase obligations<sup>(2)</sup> | $45121 | $45121 | $— | $— | $— |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Operating lease obligations represent undiscounted non-cancelable remaining lease payments.

&nbsp;&nbsp;&nbsp;&nbsp;(2) Purchase obligations represent commitments to our suppliers and other parties for the purchases of goods and services, which primarily consist of wafer and other inventory purchases, assembly and other manufacturing services, and purchases of property and equipment.

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In addition to operating lease and purchase obligations, we have a contractual obligation related to income tax as of December 31, 2025, which primarily comprises unrecognized tax benefits of approximately $15.3 million, and was classified as contra deferred tax assets or long-term income taxes payable in our consolidated balance sheet. We believe that cash generated from operations, together with existing sources of liquidity, will satisfy the cash requirements for these contractual obligations.

#### Recently Issued Accounting Pronouncements
For recently issued accounting announcements, see "Recently Issued Accounting Pronouncements" in Note 2, *Significant Accounting Policies and Recent Accounting Pronouncements*, in our Notes to Consolidated Financial Statements included in this Annual Report on Form 10-K.

#### Item 7A. Quantitative and Qualitative Disclosures About Market Risk.
*Interest Rate Risk.* Our exposure to market risk for changes in interest rates relates primarily to our investment portfolio. We consider cash invested in highly liquid financial instruments with a remaining maturity of three months or less at the date of purchase to be cash equivalents. Investments in highly liquid financial instruments with maturities greater than three months are classified as short-term investments. We generally hold securities until maturity; however, they may be sold under certain circumstances, including, but not limited to, when necessary for the funding of acquisitions and other strategic investments. As a result of this policy, we classify our investment portfolio as available-for-sale. We invest in high-credit quality issuers and, by policy, limit the amount of credit exposure to any one issuer. As stated in our policy, we seek to ensure the safety and preservation of our invested principal funds by limiting default risk, market risk and reinvestment risk. We mitigate default risk by investing in safe and high-credit quality securities and by constantly positioning our portfolio to respond appropriately to a significant reduction in a credit rating of any investment issuer, guarantor or depository. The portfolio includes only marketable securities with active secondary or resale markets to facilitate portfolio liquidity. At December 31, 2025 and 2024, we held primarily cash equivalents and short-term investments with fixed interest rates. We do not hold any instruments for trading purposes.

Our investment securities are subject to market interest rate risk and will vary in value as market interest rates fluctuate. To minimize market risk, we invest in high-credit quality issuers and, by policy, limit the amount of credit exposure to any one issuer, and therefore if market interest rates were to increase or decrease by 10% from interest rates as of December 31, 2025 or December 31, 2024, the increase or decrease in the fair market value of our portfolio on these dates would not have been material. We monitor our investments for impairment on a periodic basis. Refer to Note 5, *Marketable Securities*, in our Notes to Consolidated Financial Statements in this Annual Report on Form 10-K, for a tabular presentation of our available-for-sale investments and the expected maturity dates.

*Foreign Currency Exchange Risk.* As of December 31, 2025, our primary transactional currency was the U.S. dollar; in addition, we hold cash in Swiss francs and euros to fund the operation of our Swiss subsidiary. Cash balances held in foreign countries are subject to local banking laws and may bear higher or lower risk than cash deposited in the United States. The following represents the potential impact on our pretax income from a change in the value of the U.S. dollar compared to the Swiss franc and euro as of December 31, 2025. This sensitivity analysis applies a change in the U.S. dollar value of 5% and 10%.

---

| | | |
|:---|:---|:---|
|  | **December 31, 2025** | **December 31, 2025** |
| **(in thousands of USD)** | **5%** | **10%** |
| Swiss franc and euro foreign exchange impact | $191 | $381 |

---

The foreign exchange rate fluctuation between the U.S. dollar versus the Swiss franc and euro is recorded in other income in our consolidated statements of income.

We have R&D and sales offices in various other foreign countries in which our expenses are denominated in the local currency, primary Asia and Western Europe. From time to time we may enter into foreign currency hedging contracts to hedge certain foreign currency transactions. As of December 31, 2025 and 2024, we did not have an open foreign currency hedge program utilizing foreign currency forward exchange contracts.

With two of our major suppliers, Seiko Epson Corporation ("Epson") and ROHM Lapis Semiconductor Co., Ltd. ("Lapis") we have wafer supply agreements based in U.S. dollars; however, our agreements with Epson and Lapis also allow for mutual sharing of the impact of the exchange rate fluctuation between Japanese yen and the U.S. dollar. Each year, our management and these suppliers review and negotiate pricing; the negotiated pricing is denominated in

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U.S. dollars but is subject to contractual exchange rate provisions. The fluctuation in the exchange rate is shared equally between us and each of these suppliers.

Nevertheless, as a result of our above-mentioned supplier agreements, our gross margin is influenced by fluctuations in the exchange rate between the U.S. dollar and the Japanese yen. All else being equal, a 10% change in the value of the U.S. dollar compared to the Japanese yen would eventually result in a corresponding change in our gross margin of approximately 1.5%; this sensitivity may increase or decrease depending on the percentage of our wafer supply that we purchase from some of our Japanese suppliers and could subject our gross profit and operating results to the potential for material fluctuations.

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#### Item 8. Financial Statements and Supplementary Data.

#### REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Stockholders and the Board of Directors of Power Integrations, Inc.

#### Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Power Integrations, Inc. and subsidiaries (the "Company") as of December 31, 2025 and 2024, the related consolidated statements of income, comprehensive income, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2025, and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) ("PCAOB"), the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in *Internal Control - Integrated Framework (2013)* issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated February 6, 2026, expressed an unqualified opinion on the Company's internal control over financial reporting.

**Basis for Opinion**

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

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the 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 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 financial statements. We believe that our audits provide a reasonable basis for our opinion.

**Critical Audit Matter**

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

**Inventories – Provision for Excess and Obsolete Inventory – Refer to Notes 2 and 3 to the financial statements**

*Critical Audit Matter Description*

The Company's inventories are recorded at standard cost, which approximates actual cost on a first-in, first-out basis, not in excess of net realizable value. The Company routinely evaluates quantities and values of inventories and records a provision for excess and obsolete inventories to reduce its recorded inventory balance to its estimated net realizable value. Management's assumptions regarding the inventory quantities considered to be excess and obsolete are determined by analyzing historical usage, demand forecasts, current economic trends, and historical write-offs.

We identified the determination of excess and obsolete inventories within work-in-process and finished goods inventories as a critical audit matter due to the significant assumptions made by management when determining the excess and obsolete inventory quantities and the resulting provision. This required a high degree of auditor judgement and an increased extent of effort when performing audit procedures to evaluate the reasonableness of management's excess and obsolete provision for work-in-process and finished goods inventories.

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*How the Critical Audit Matter Was Addressed in the Audit*

Our audit procedures related to management's assumptions used in determining the excess and obsolete provision for work-in-process and finished goods inventories included the following, among others:

\* We tested the effectiveness of the control over the determination of the provision for excess and obsolete inventories, including work-in-process and finished goods inventories.

\* We selected a sample of products from work-in-process and finished goods inventories as of December 31, 2024, and evaluated management's ability to accurately estimate forecasted demand by comparing the respective products usage for the year ended December 31, 2025, to estimates made in the prior year.

\* We selected a sample of products from work-in-process and finished goods inventories and evaluated the reasonableness of management's provision for work-in-process and finished goods inventories by considering recent usage, historical usage, contracts and communications with customers, expected product lifecycles, macroeconomic conditions, and inquiries with sales personnel.

\* We considered the existence of contradictory evidence based on reading of internal communications to management and the board of directors, Company press releases, and analyst reports, as well as our observations and inquiries as to changes within the business.

/s/ DELOITTE & TOUCHE LLP

San Jose, California

February 6, 2026

We have served as the Company's auditor since 2005.

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#### POWER INTEGRATIONS, INC.

#### CONSOLIDATED BALANCE SHEETS

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **(in thousands)** | **2025** | **2024** |
| ASSETS |  |  |
| CURRENT ASSETS: |  |  |
| &nbsp;&nbsp;Cash and cash equivalents | $58755 | $50972 |
| &nbsp;&nbsp;Short-term marketable securities | 190755 | 249023 |
| &nbsp;&nbsp;Accounts receivable, net | 18254 | 27172 |
| &nbsp;&nbsp;Inventories | 166887 | 165612 |
| &nbsp;&nbsp;Prepaid expenses and other current assets | 23678 | 21260 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current assets | 458329 | 514039 |
| PROPERTY AND EQUIPMENT, net | 146536 | 149562 |
| INTANGIBLE ASSETS, net | 7244 | 8075 |
| GOODWILL | 95271 | 95271 |
| DEFERRED TAX ASSETS | 35594 | 36485 |
| OTHER ASSETS | 29233 | 25394 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total assets | $772207 | $828826 |
| LIABILITIES AND STOCKHOLDERS' EQUITY |  |  |
| CURRENT LIABILITIES: |  |  |
| &nbsp;&nbsp;Accounts payable | $33963 | $29789 |
| &nbsp;&nbsp;Accrued payroll and related expenses | 13840 | 13987 |
| &nbsp;&nbsp;Taxes payable | 962 | 961 |
| &nbsp;&nbsp;Other accrued liabilities | 21596 | 10580 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total current liabilities | 70361 | 55317 |
| LONG-TERM INCOME TAXES PAYABLE | 3663 | 3871 |
| OTHER LIABILITIES | 25338 | 19866 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities | 99362 | 79054 |
| COMMITMENTS AND CONTINGENCIES (Notes 11, 12 and 14) |  |  |
| STOCKHOLDERS' EQUITY: |  |  |
| &nbsp;&nbsp;Common stock, $0.001 par value |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Authorized - 140,000 shares |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Shares issued and outstanding - 55,339 and 56,837 shares in 2025 and 2024, respectively | 20 | 22 |
| &nbsp;&nbsp;Additional paid-in capital |  | 18734 |
| &nbsp;&nbsp;Accumulated other comprehensive loss | (1105) | (3023) |
| &nbsp;&nbsp;Retained earnings | 673930 | 734039 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total stockholders' equity | 672845 | 749772 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total liabilities and stockholders' equity | $772207 | $828826 |

---

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

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**POWER INTEGRATIONS, INC.**

#### CONSOLIDATED STATEMENTS OF INCOME

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands, except per share amounts)** | **2025** | **2024** | **2023** |
| NET REVENUE | $443504 | $418973 | $444538 |
| COST OF REVENUE | 201855 | 194222 | 215582 |
| GROSS PROFIT | 241649 | 224751 | 228956 |
| OPERATING EXPENSES: |  |  |  |
| &nbsp;&nbsp;Research and development | 101116 | 100790 | 96067 |
| &nbsp;&nbsp;Sales and marketing | 67952 | 67825 | 64598 |
| &nbsp;&nbsp;General and administrative | 42701 | 38207 | 33232 |
| &nbsp;&nbsp;Other operating expenses | 19686 |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Total operating expenses | 231455 | 206822 | 193897 |
| INCOME FROM OPERATIONS | 10194 | 17929 | 35059 |
| OTHER INCOME | 10785 | 12825 | 10848 |
| INCOME BEFORE INCOME TAXES | 20979 | 30754 | 45907 |
| PROVISION (BENEFIT) FOR INCOME TAXES | (1114) | (1480) | (9828) |
| NET INCOME | $22093 | $32234 | $55735 |
| EARNINGS PER SHARE: |  |  |  |
| &nbsp;&nbsp;Basic | $0.39 | $0.57 | $0.97 |
| &nbsp;&nbsp;Diluted | $0.39 | $0.56 | $0.97 |
| SHARES USED IN PER SHARE CALCULATION: |  |  |  |
| &nbsp;&nbsp;Basic | 56063 | 56820 | 57195 |
| &nbsp;&nbsp;Diluted | 56324 | 57130 | 57622 |

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

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**POWER INTEGRATIONS, INC.**

#### CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| Net income | $22093 | $32234 | $55735 |
| &nbsp;&nbsp;Other comprehensive income (loss), net of tax: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Foreign currency translation adjustments, net of $0 tax in 2025, 2024 and 2023 | 991 | (512) | (420) |
| &nbsp;&nbsp;&nbsp;&nbsp;Unrealized gain on marketable securities, net of ($7), ($195) and $0 tax in 2025, 2024 and 2023, respectively | 1058 | 437 | 5579 |
| &nbsp;&nbsp;&nbsp;&nbsp;Unrealized actuarial gain (loss) on pension benefits, net of tax of $21, $266 and ($130) in 2025, 2024 and 2023, respectively | (131) | (1486) | 723 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Total other comprehensive income (loss) | 1918 | (1561) | 5882 |
| TOTAL COMPREHENSIVE INCOME | $24011 | $30673 | $61617 |

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

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**POWER INTEGRATIONS, INC.**

#### CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

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| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  |  |  |  | **Accumulated** |  |  |
|  |  |  | **Additional** | **Other** |  | **Total** |
|  | **Common Stock** | **Common Stock** | **Paid-In** | **Comprehensive** | **Retained** | **Stockholders'** |
| **(In thousands)** | **Shares** | **Amount** | **Capital** | **Loss** | **Earnings** | **Equity** |
| BALANCE AT JANUARY 1, 2023 | 56961 | $24 | $— | $(7344) | $762536 | $755216 |
| Issuance of common stock under employee stock option and stock award plans | 476 |  |  |  |  |  |
| Repurchase of common stock | (784) | (1) | (34765) |  | (20583) | (55349) |
| Issuance of common stock under employee stock purchase plan | 85 |  | 6237 |  |  | 6237 |
| Stock-based compensation expense related to employee stock awards |  |  | 26624 |  |  | 26624 |
| Stock-based compensation expense related to employee stock purchases |  |  | 1904 |  |  | 1904 |
| Payment of dividends to stockholders |  |  |  |  | (44008) | (44008) |
| Unrealized actuarial gain on pension benefits |  |  |  | 723 |  | 723 |
| Unrealized gain on marketable securities |  |  |  | 5579 |  | 5579 |
| Foreign currency translation adjustment |  |  |  | (420) |  | (420) |
| Net income |  |  |  |  | 55735 | 55735 |
| BALANCE AT DECEMBER 31, 2023 | 56738 | 23 |  | (1462) | 753680 | 752241 |
| Issuance of common stock under employee stock option and stock award plans | 410 |  |  |  |  |  |
| Repurchase of common stock | (402) | (1) | (22042) |  | (5838) | (27881) |
| Issuance of common stock under employee stock purchase plan | 91 |  | 5700 |  |  | 5700 |
| Stock-based compensation expense related to employee stock awards |  |  | 33404 |  |  | 33404 |
| Stock-based compensation expense related to employee stock purchases |  |  | 1672 |  |  | 1672 |
| Payment of dividends to stockholders |  |  |  |  | (46037) | (46037) |
| Unrealized actuarial loss on pension benefits |  |  |  | (1486) |  | (1486) |
| Unrealized gain on marketable securities |  |  |  | 437 |  | 437 |
| Foreign currency translation adjustment |  |  |  | (512) |  | (512) |
| Net income |  |  |  |  | 32234 | 32234 |
| BALANCE AT DECEMBER 31, 2024 | 56837 | 22 | 18734 | (3023) | 734039 | 749772 |
| Issuance of common stock under employee stock option and stock award plans | 416 |  |  |  |  |  |
| Repurchase of common stock | (2028) | (2) | (64025) |  | (34758) | (98785) |
| Issuance of common stock under employee stock purchase plan | 114 |  | 5326 |  |  | 5326 |
| Stock-based compensation expense related to employee stock awards |  |  | 38271 |  | (274) | 37997 |
| Stock-based compensation expense related to employee stock purchases |  |  | 1694 |  |  | 1694 |
| Payment of dividends to stockholders |  |  |  |  | (47170) | (47170) |
| Unrealized actuarial loss on pension benefits |  |  |  | (131) |  | (131) |
| Unrealized gain on marketable securities |  |  |  | 1058 |  | 1058 |
| Foreign currency translation adjustment |  |  |  | 991 |  | 991 |
| Net income |  |  |  |  | 22093 | 22093 |
| BALANCE AT DECEMBER 31, 2025 | 55339 | $20 | $— | $(1105) | $673930 | $672845 |

---

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

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**POWER INTEGRATIONS, INC.**

#### CONSOLIDATED STATEMENTS OF CASH FLOWS

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |  |
| Net income | $22093 | $32234 | $55735 |
| Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |
| &nbsp;&nbsp;Depreciation | 27195 | 33303 | 35203 |
| &nbsp;&nbsp;Amortization of intangibles | 831 | 1279 | 2173 |
| &nbsp;&nbsp;Loss (gain) on disposal of property and equipment | (108) | 240 | 100 |
| &nbsp;&nbsp;Stock-based compensation expense | 39690 | 35076 | 28528 |
| &nbsp;&nbsp;Accretion of discount on marketable securities | (1135) | (1637) | (351) |
| &nbsp;&nbsp;Deferred income taxes | 898 | (8352) | (9247) |
| &nbsp;&nbsp;Decrease in accounts receivable allowance for credit losses | (342) | (245) | (454) |
| &nbsp;&nbsp;Change in operating assets and liabilities: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts receivable | 9260 | (12253) | 6616 |
| &nbsp;&nbsp;&nbsp;&nbsp;Inventories | (1275) | (2448) | (27744) |
| &nbsp;&nbsp;&nbsp;&nbsp;Prepaid expenses and other assets | 635 | 4001 | (1183) |
| &nbsp;&nbsp;&nbsp;&nbsp;Accounts payable | 3253 | 3454 | (5435) |
| &nbsp;&nbsp;&nbsp;&nbsp;Taxes payable and accrued liabilities | 10523 | (3471) | (18182) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by operating activities | 111518 | 81181 | 65759 |
| CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |  |
| &nbsp;&nbsp;Purchases of property and equipment | (24396) | (17286) | (20884) |
| &nbsp;&nbsp;Proceeds from sale of property and equipment | 150 |  |  |
| &nbsp;&nbsp;Purchases of marketable securities | (64484) | (105716) | (191211) |
| &nbsp;&nbsp;Proceeds from sales and maturities of marketable securities | 124937 | 106602 | 197942 |
| &nbsp;&nbsp;Acquisition (Note 15) |  | (9520) |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash provided by (used in) investing activities | 36207 | (25920) | (14153) |
| CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |
| &nbsp;&nbsp;Issuance of common stock under employee stock plans | 5326 | 5700 | 6237 |
| &nbsp;&nbsp;Repurchase of common stock | (98098) | (27881) | (55278) |
| &nbsp;&nbsp;Payments of dividends to stockholders | (47170) | (46037) | (44008) |
| &nbsp;&nbsp;Proceeds from draw on line of credit | 13000 |  |  |
| &nbsp;&nbsp;Payments on line of credit | (13000) |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Net cash used in financing activities | (139942) | (68218) | (93049) |
| NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 7783 | (12957) | (41443) |
| CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 50972 | 63929 | 105372 |
| CASH AND CASH EQUIVALENTS AT END OF PERIOD | $58755 | $50972 | $63929 |
| SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |  |  |
| &nbsp;&nbsp;Unpaid property and equipment | $2927 | $2693 | $2747 |
| SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |  |  |
| &nbsp;&nbsp;Cash paid for income taxes, net | $3031 | $4784 | $13769 |

---

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

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**POWER INTEGRATIONS, INC.**

#### NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
1. THE COMPANY:

Power Integrations, Inc. ("Power Integrations" or the "Company"), incorporated in California on March 25, 1988, and reincorporated in Delaware in December 1997, designs, develops, manufactures and markets analog and mixed-signal integrated circuits ("ICs") and other electronic components and circuitry used in high-voltage power conversion. The Company's products are used in power converters that convert electricity from a high-voltage source to the type of power required for a specified downstream use. In most cases, this conversion entails, among other functions, converting alternating current ("AC") to direct current ("DC") or vice versa, reducing or increasing the voltage, and regulating the output voltage and/or current according to the customer's specifications.

A large percentage of the Company's products are ICs used in AC-DC power supplies, which convert the high-voltage AC from a wall outlet to the low-voltage DC required by most electronic devices. Power supplies incorporating the Company's products are used with all manner of electronic products including mobile phones, computing and networking equipment, appliances, electronic utility meters, battery-powered tools, industrial controls, and "home-automation," or "internet of things" applications such as networked thermostats, power strips and other building-automation and security devices. The Company also supplies high-voltage LED drivers, which are AC-DC ICs specifically designed for lighting applications that utilize light-emitting diodes, and motor-drivers ICs for brushless DC ("BLDC") motors used in consumer appliances, HVAC systems, ceiling fans and a variety of industrial applications. The Company also offers high-voltage gate drivers—either standalone ICs or circuit boards containing ICs, electrical isolation components and other circuitry—used to operate high-voltage switches such as insulated-gate bipolar transistors ("IGBTs") and silicon-carbide ("SiC") MOSFETs. These combinations of switches and drivers are used for power conversion in high-power applications (i.e., power levels ranging from approximately 100 kilowatts up to gigawatts) such as industrial motors, solar- and wind-power systems, electric vehicles and high-voltage DC transmission systems.

2. SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS:

#### Significant Accounting Policies and Estimates
*Segment Reporting*

The Company is organized and operates as one reportable segment, the design, development, manufacture and marketing of integrated circuits and related components for use primarily in high-voltage power conversion. The Company's chief operating decision maker, the Chief Executive Officer, reviews financial information presented on a consolidated basis for purposes of making operating decisions and assessing financial performance.

*Principles of Consolidation*

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries after elimination of all intercompany transactions and balances.

*Estimates*

The preparation of financial statements in conformity with U.S. Generally Accepted Accounting Principles ("GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from those estimates. On an ongoing basis, the Company evaluates its estimates, including those related to revenue recognition, allowances for receivables, inventories, litigation and income taxes. These estimates are based on historical facts and various other factors, which the Company believes to be reasonable at the time the estimates are made. However, as the effects of future events cannot be determined with precision, actual results could differ significantly from management's estimates.

*Revenue Recognition*

The Company applies the provisions of Accounting Standards Codification ("ASC") 606-10, *Revenue from Contracts with Customers*, and all related appropriate guidance. The Company recognizes revenue under the core principle to depict the transfer of control to the Company's customers in an amount reflecting the consideration the Company expects to be entitled. In order to achieve that core principle, the Company applies the following five-step approach: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price,

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(4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when a performance obligation is satisfied.

Product revenue consists of sales to original equipment manufacturers, or OEMs, merchant power supply manufacturers and distributors. The Company considers customer purchase orders, which in some cases are governed by master sales agreements, to be the contracts with a customer. In situations where sales are to a distributor, the Company has concluded that its contracts are with the distributor as the Company holds a contract bearing enforceable rights and obligations only with the distributor. As part of its consideration of the contract, the Company evaluates certain factors including the customer's ability to pay (or credit risk). For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations. In determining the transaction price the Company evaluates whether the price is subject to refund or adjustment to determine the net consideration to which the Company expects to be entitled. As the Company's standard payment terms are less than one year, the Company has elected the practical expedient under ASC 606-10-32-18 to not assess whether a contract has a significant financing component. The Company allocates the transaction price to each distinct product based on their relative standalone selling price. The product price as specified on the purchase order is considered the standalone selling price as it is an observable input which depicts the price as if sold to a similar customer in similar circumstances. Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company's performance obligation is satisfied), which typically occurs at shipment. Further, in determining whether control has transferred, the Company considers if there is a present right to payment and legal title, along with risks and rewards of ownership having transferred to the customer.

Frequently, the Company receives orders for products to be delivered over multiple dates that may extend across several reporting periods. The Company invoices for each delivery upon shipment and recognizes revenue for each distinct product delivered, assuming transfer of control has occurred. As scheduled delivery dates are within one year, under the optional exemption provided by ASC 606-10-50-14 revenue allocated to future shipments of partially completed contracts are not disclosed. The Company has also elected the practical expedient under ASC 340-40-25-4 to expense commissions when incurred as the amortization period of the commission asset the Company would have otherwise recognized is less than one year.

Sales to international customers that are shipped from the Company's facility outside of the United States are pursuant to EX Works, or EXW, shipping terms, meaning that control of the product transfers to the customer upon shipment from the Company's foreign warehouse. Sales to international customers that are shipped from the Company's facility in California are pursuant to Delivered at Frontier, or DAF, shipping terms. As such, control of the product passes to the customer when the shipment reaches the destination country and revenue is recognized upon the arrival of the product in that country. Shipments to customers in the Americas are pursuant to Free on Board, or FOB, point of origin shipping terms meaning that control is passed to the customer upon shipment.

Sales to most distributors are made under terms allowing certain price adjustments and limited rights of return (known as "stock rotation") of the Company's products held in their inventory or upon sale to their end customers. Revenue from sales to distributors is recognized upon the transfer of control to the distributor. Frequently, distributors need to sell at a price lower than the standard distribution price in order to win business. At the time the distributor invoices its customer or soon thereafter, the distributor submits a "ship-and-debit" price adjustment claim to the Company to adjust the distributor's cost from the standard price to the pre-approved lower price. After the Company verifies that the claim was pre-approved, a credit memo is issued to the distributor for the ship-and-debit claim. In determining the transaction price, the Company considers ship-and-debit price adjustments to be variable consideration. Such price adjustments are estimated using the expected value method based on an analysis of actual ship-and-debit claims, at the distributor and product level, over a period of time considered adequate to account for current pricing and business trends. Historically, actual price adjustments for ship-and-debit claims have not materially differed from those estimated and included when determining the transaction price. Stock rotation rights grant the distributor the ability to return certain specified amounts of inventory. Stock rotation adjustments are an additional form of variable consideration and are also estimated using the expected value method based on historical return rates. Historically, distributor stock rotation adjustments have not been material.

Sales to certain distributors are made under terms that do not include rights of return or price concessions after the product is shipped to the distributor. Accordingly, upon application of steps one through five above, product revenue is recognized upon shipment and transfer of control.

The Company generally provides an assurance warranty that its products will substantially conform to the published specifications for twelve months from the date of shipment. The Company's liability is limited to either a credit equal to the purchase price or replacement of the defective part. Returns under warranty have historically been immaterial. As such, the Company does not record a specific warranty reserve or consider activities related to such warranty, if any, to be a separate performance obligation.

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*Inventories*

Inventories (which consist of costs associated with the purchases of wafers from domestic and offshore foundries and of packaged components from offshore assembly manufacturers, as well as internal labor and overhead associated with the testing of both wafers and packaged components).

Inventory is recorded at standard cost, which approximates actual cost computed on a first-in, first-out basis, not in excess of net realizable value. The Company routinely evaluates quantities and values of inventories and records a provision for excess and obsolete inventories to reduce its recorded inventory balance to its estimated net realizable value. In order to determine the provision management considers historical usage, forecasted demand, current economic trends and historical write-offs.

*Stock-based compensation*

The Company applies the provisions of ASC 718-10, *Share-Based Payment* to recognize the fair value of stock-based compensation in the financial statements over the requisite service period of the individual grants. The Company uses estimates of volatility, expected term, risk-free interest rate, dividend yield and forfeitures in determining the fair value of these awards and the amount of compensation expense to recognize. Changes in the estimated forfeiture rate could result in changes to current compensation charges for historical grants.

For awards with performance conditions, the Company recognizes compensation expense when it becomes probable that the performance target will be achieved. A probability assessment is performed on a quarterly basis and requires significant assumptions and estimates made by management related to the projected achievement of the performance targets, which generally consist of non-GAAP operating earnings, strategic goals and revenue. Changes in the probability assessment of achieving the performance targets are accounted for in the period of change by recording a cumulative catch-up adjustment as if the new estimate had been applied since the service inception date. If the actual performance targets achieved differ significantly from those projected by management, additional compensation expense may be recorded for the performance-based awards due to the cumulative catch-up adjustment, which could have an adverse impact on our results of operations.

*Income Taxes*

Income-tax expense is an estimate of current income taxes payable or refundable in the current fiscal year based on reported income before income taxes. Deferred income taxes reflect the effect of temporary differences and carry-forwards that are recognized for financial reporting and income tax purposes.

The Company accounts for income taxes under the provisions of ASC 740, *Income Taxe*s. Under the provisions of ASC 740, deferred tax assets and liabilities are recognized based on the differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, utilizing the tax rates that are expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The Company limits the deferred tax assets recognized related to certain officers' compensation to amounts that it estimates will be deductible in future periods based upon Internal Revenue Code Section 162(m). The Company also recognizes valuation allowances to reduce any deferred tax assets to the amount that it estimates will more likely than not be realized based on available evidence and management's judgment. In the event that the Company determines, based on available evidence and management judgment, that all or part of the net deferred tax assets will not be realized in the future, it would record a valuation allowance in the period the determination is made. In addition, the calculation of tax liabilities involves significant judgment in estimating the impact of uncertainties in the application of complex tax laws. Resolution of these uncertainties in a manner inconsistent with the Company's expectations could have a material impact on the Company's results of operations and financial position. The Company recognizes interest and penalties related to income tax matters as income tax expense.

The U.S. tax rules require U.S. tax on foreign earnings, known as net Controlled Foreign Corporations tested income (formerly known as global intangible low taxed income, or GILTI). Under U.S. GAAP, we are allowed to make an accounting policy choice of either (1) treating taxes due on future U.S. inclusions as a current-period expense when incurred (the "period cost method") or (2) factoring such amounts into a company's measurement of its deferred taxes (the "deferred method"). We selected the deferred method of accounting and recorded the associated basis differences anticipated to influence prospective income inclusion calculations.

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*Business Combinations*

The Company applies the provisions of ASC 805, *Business Combinations* ("ASC 805"), in accounting for acquisitions. ASC 805 requires that the Company evaluates whether a transaction pertains to an acquisition of assets, or to an acquisition of a business. A business is defined as an integrated set of assets and activities that is capable of being conducted and managed for the purpose of providing a return to investors. Asset acquisitions are accounted for by allocating the cost of the acquisition to the individual assets and liabilities assumed on a relative fair value basis; whereas the acquisition of a business requires the Company to recognize separately from goodwill the assets acquired and the liabilities assumed at the acquisition date fair values. Goodwill is measured as the excess of consideration transferred over the net acquisition date fair values of the assets acquired and the liabilities assumed. While the Company uses its best estimates and assumptions to accurately value assets acquired and liabilities assumed as well as any contingent consideration, where applicable, the estimates are inherently uncertain and subject to refinement. As a result, during the measurement period, which may be up to one year from the business acquisition date, the Company may record certain adjustments to the assets acquired and liabilities assumed with the corresponding adjustment to goodwill. Upon the conclusion of a business acquisition's measurement period or final determination of the values of assets acquired or liabilities assumed, whichever comes first, any subsequent adjustments are recorded to the consolidated statements of operations. All acquisition-related costs are accounted for as expenses in the period in which they are incurred.

*Goodwill and Intangible Assets*

Goodwill and the Company's domain name are evaluated in accordance with ASC 350-10, *Goodwill and Other Intangible Assets,* and an impairment analysis is conducted on an annual basis, or sooner if indicators exist for a potential impairment.

In accordance with ASC 360-10, *Accounting for the Impairment or Disposal of Long-Lived Assets*, long-lived assets, such as property and equipment and intangible assets, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of an asset exceeds its estimated future cash flows, an impairment charge is recognized by the amount by which the carrying amount of the asset exceeds the fair value of the asset.

*Cash and Cash Equivalents*

The Company considers cash invested in highly liquid financial instruments with maturities of three months or less at the date of purchase to be cash equivalents.

*Marketable Securities*

The Company generally holds securities until maturity; however, they may be sold under certain circumstances including, but not limited to, when necessary for the funding of acquisitions and other strategic investments. As a result, the Company classifies its investment portfolio as available-for-sale. The Company classifies all investments with a maturity date greater than three months at the date of purchase as short-term marketable securities in its consolidated balance sheet. As of December 31, 2025 and 2024, the Company's marketable securities consisted primarily of commercial paper, corporate bonds, government securities and/or other high-quality commercial securities.

*Employee Benefits Plan*

The Company sponsors a 401(k) tax-deferred savings plan for all employees in the United States who meet certain eligibility requirements. Participants may contribute up to the amount allowable as a deduction for federal income tax purposes. The Company is not required to contribute; however, the Company contributes a certain percentage of employee annual salaries on a discretionary basis, not to exceed an established threshold. The Company provided for a contribution of approximately $2.1 million in each of 2025, 2024 and 2023.

*Retirement Benefit Obligations (Pension)*

The Company recognizes the over-funded or under-funded status of a defined benefit pension or post-retirement plan as an asset or liability in the accompanying consolidated balance sheets. Actuarial gains and losses are recorded in accumulated other comprehensive loss, a component of stockholders' equity, and are amortized as a component of net periodic cost over the remaining estimated service period of participants.

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*Foreign Currency Risk and Foreign Currency Translation*

As of December 31, 2025, the Company's primary transactional currency was U.S. dollars; in addition, the Company holds cash in Swiss francs and euros to fund the operations of the Company's Swiss subsidiary. The foreign exchange rate fluctuation between the U.S. dollar versus the Swiss franc and euro is recorded in other income in the consolidated statements of income.

Gains and losses arising from the remeasurement of non-functional currency balances are recorded in other income in the accompanying consolidated statements of income. The Company recognized foreign exchange losses of $0.3 million, $0.3 million, and $0.4 million in 2025, 2024 and 2023, respectively.

The functional currencies of the Company's other subsidiaries are the local currencies. Accordingly, all assets and liabilities are translated into U.S. dollars at the current exchange rates as of the applicable balance sheet date. Revenue and expenses are translated at the average exchange rate prevailing during the period. Cumulative gains and losses from the translation of the foreign subsidiaries' financial statements have been included accumulated other comprehensive loss in stockholders' equity.

*Warranty*

The Company generally warrants that its products will substantially conform to the published specifications for 12 months from the date of shipment. The Company's liability is limited to either a credit equal to the purchase price or replacement of the defective part. Returns under warranty have historically been immaterial, and as a result, the Company does not record a specific warranty reserve.

*Advertising*

Advertising costs are expensed as incurred and amounted to $1.1 million, $1.5 million and $1.3 million in 2025, 2024 and 2023, respectively.

*Research and Development*

Research and development costs are expensed as incurred.

*Indemnifications*

The Company sells products to its distributors under contracts, collectively referred to as Distributor Sales Agreements ("DSA"). Each DSA contains the relevant terms of the contractual arrangement with the distributor, and generally includes certain provisions for indemnifying the distributor against losses, expenses, and liabilities from damages that may be awarded against the distributor in the event the Company's products are found to infringe upon a patent, copyright, trademark, or other proprietary right of a third party (Customer Indemnification). The DSA generally limits the scope of and remedies for the Customer Indemnification obligations in a variety of industry-standard respects, including, but not limited to, limitations based on time and geography, and a right to replace an infringing product. The Company also, from time to time, has granted a specific indemnification right to individual customers.

The Company believes its internal development processes and other policies and practices limit its exposure related to such indemnifications. In addition, the Company requires its employees to sign a proprietary information and inventions agreement, which assigns the rights to its employees' development work to the Company. To date, the Company has not had to reimburse any of its distributors or customers for any losses related to these indemnifications and no material claims were outstanding as of December 31, 2025. For several reasons, including the lack of prior indemnification claims and the lack of a monetary liability limit for certain infringement cases, the Company cannot determine the maximum amount of potential future payments, if any, related to such indemnifications.

#### Adoption of New Accounting Standards
In December 2023, the FASB issued ASU 2023-09, *Income Taxes (Topic 740)*: *Improvements to Income Tax Disclosures* ("ASU 2023-09"), which modifies the rules on income tax disclosures to require entities to disclose (1) specific categories in the rate reconciliation, (2) the income or loss from continuing operations before income tax expense or benefit (separated between domestic and foreign) and (3) income tax expense or benefit from continuing operations (separated by federal, state and foreign). ASU 2023-09 also requires entities to disclose their income tax payments to international, federal, state and local jurisdictions, among other changes. The guidance is effective for annual

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periods beginning after December 15, 2024. The Company adopted the new standard on a prospective basis in fiscal year 2025 for annual reporting periods. Refer to Note 11. *Provision* (*Benefit) for Income Taxes*.

**Recently Issued Accounting Pronouncements**

In November 2024, the FASB issued ASU 2024-03, *Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40)* which requires additional disclosure of certain costs and expenses, including inventory purchases, employee compensation, selling expense and depreciation expense within the notes to financial statements. The guidance is effective for annual periods beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. The Company is currently evaluating the impact that the updated standard will have on its financial statement disclosures.

In September 2025, the FASB issued ASU 2025-06, *Intangibles–Goodwill and Other–Internal-Use Software (Subtopic 350-40)* which amends certain aspects of the accounting for and disclosure of software costs. The guidance is effective for annual reporting beginning after December 15, 2027, and interim periods within fiscal years beginning after December 15, 2027. The Company is currently evaluating the impact that the updated standard will have on its financial statement disclosures.

3. COMPONENTS OF THE COMPANY'S CONSOLIDATED BALANCE SHEETS:

#### Accounts Receivable

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **(In thousands)** | **2025** | **2024** |
| Accounts receivable trade | $54177 | $57308 |
| Allowance for ship and debit | (33601) | (26446) |
| Allowance for stock rotation and rebate | (2228) | (3254) |
| Allowance for credit losses | (94) | (436) |
| &nbsp;&nbsp;Total | $18254 | $27172 |

---

The Company maintains an allowance for estimated credit losses resulting from the inability of customers to make required payments. This allowance is established using estimates formulated by the Company's management based upon factors such as the composition of the accounts receivable aging, historical losses, changes in payment patterns, customer creditworthiness, and current economic trends. Receivables determined to be uncollectible are written off and deducted from the allowance.

---

| | | |
|:---|:---|:---|
|  | **Allowance for Credit Losses** | **Allowance for Credit Losses** |
|  | **Year Ended**  | **Year Ended**  |
|  | **December 31,**  | **December 31,**  |
| **(In thousands)** | **2025** | **2024** |
| Beginning balance | $(436) | $(681) |
| &nbsp;&nbsp;Provision for credit loss expense | (215) | (1475) |
| &nbsp;&nbsp;Receivables written off |  |  |
| &nbsp;&nbsp;Recoveries | 557 | 1720 |
| Ending balance | $(94) | $(436) |

---

#### Inventories

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **(In thousands)** | **2025** | **2024** |
| Raw materials | $101366 | $101414 |
| Work-in-process | 27905 | 27271 |
| Finished goods | 37616 | 36927 |
| &nbsp;&nbsp;Total | $166887 | $165612 |

---

Inventories consist of costs associated with the purchases of wafers from domestic and offshore foundries and of packaged components from offshore assembly manufacturers, as well as internal labor and overhead associated with the testing of both wafers and packaged components.

Inventories are recorded at standard cost, which approximates actual cost computed on a first-in, first-out basis, not in excess of net realizable value. The Company routinely evaluates quantities and values of inventories and records a

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provision for excess and obsolete inventories to reduce its recorded inventory balance to its estimated net realizable value. Historically these write-downs have not been material. The bulk of our inventory is held in wafers, which combined with the fungibility of our products across customers and applications results in a lower risk of obsolescence.

#### Property and Equipment

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **(In thousands)** | **2025** | **2024** |
| Land | $22201 | $22157 |
| Construction-in-progress | 8609 | 12166 |
| Building and improvements | 100936 | 93248 |
| Machinery and equipment | 289190 | 280345 |
| Computer software and hardware and office furniture and fixtures | 77162 | 72862 |
| Total | 498098 | 480778 |
| Less: Accumulated depreciation | (351562) | (331216) |
| &nbsp;&nbsp;Property and equipment, net | $146536 | $149562 |

---

Depreciation expense for property and equipment for fiscal years ended December 31, 2025, 2024 and 2023, was approximately $27.2 million, $33.3 million and $35.2 million, respectively, and was determined using the straight-line method over the following useful lives:

---

| | | |
|:---|:---|:---|
| Building and improvements | 4 - 40 | years |
| Machinery and equipment | 2 - 8 | years |
| Computer software and hardware and office furniture and fixtures | 4 - 7 | years |

---

Total property and equipment (excluding accumulated depreciation) located in the United States at December 31, 2025, 2024 and 2023, was approximately $216.3 million, $209.7 million and $203.6 million, respectively. In 2025, 2024 and 2023, approximately 16%, 15% and 15% of total property and equipment (excluding accumulated depreciation) was held by one of the Company's subcontractors in Malaysia. No other country held 10% or more of total property and equipment in the periods presented. In 2024 and 2023, approximately 10% and 11%, respectively, of total property and equipment (excluding accumulated depreciation) was held in Thailand by one of the Company's subcontractors.

#### Accumulated Other Comprehensive Income (Loss)
Changes in accumulated other comprehensive income (loss), net of taxes, for the three years ended December 31, 2025:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **(In thousands)** | **Unrealized Gains**<br> **and Losses on**<br> **Available-for-Sale**<br> **Securities** | <br>**Defined Benefit**<br> **Pension Items** | <br>**Foreign**<br> **Currency**<br> **Items** | <br>**Total** |
| Balance at January 1, 2023 | $(5323) | $862 | $(2883) | $(7344) |
| Other comprehensive income (loss) before reclassifications | 5579 | 811 | (420) | 5970 |
| Amounts reclassified from accumulated other comprehensive loss |  | (88)<br><sub> (1)</sub> |  | (88) |
| Other comprehensive income (loss) | 5579 | 723 | (420) | 5882 |
| Balance at December 31, 2023 | 256 | 1585 | (3303) | (1462) |
| Other comprehensive income (loss) before reclassifications | 437 | (1319) | (512) | (1394) |
| Amounts reclassified from accumulated other comprehensive loss |  | (167)<br><sub> (1)</sub> |  | (167) |
| Other comprehensive income (loss) | 437 | (1486) | (512) | (1561) |
| Balance at December 31, 2024 | 693 | 99 | (3815) | (3023) |
| Other comprehensive income (loss) before reclassifications | 1058 | (123) | 991 | 1926 |
| Amounts reclassified from accumulated other comprehensive loss |  | (8)<br><sub> (1)</sub> |  | (8) |
| Other comprehensive income (loss) | 1058 | (131) | 991 | 1918 |
| Balance at December 31, 2025 | $1751 | $(32) | $(2824) | $(1105) |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) This component of accumulated other comprehensive income (loss) is included in the computation of net periodic pension cost for the years ended December 31, 2025, 2024 and 2023.

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4. FAIR VALUE MEASUREMENTS:

ASC 820-10, *Fair Value Measurements*, clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, ASC 820-10 establishes a three-tier value hierarchy, which prioritizes the inputs used in measuring fair value as follows: (Level 1) observable inputs such as quoted prices for identical assets in active markets; (Level 2) inputs other than the quoted prices in active markets that are observable either directly or indirectly; and (Level 3) unobservable inputs in which there is little or no market data, which requires the Company to develop its own assumptions. This hierarchy requires the Company to use observable market data, when available, and to minimize the use of unobservable inputs when determining fair value.

The Company's cash equivalents and investment instruments are classified within Level 1 or Level 2 of the fair-value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. The type of instrument valued based on quoted market prices in active markets primarily includes money market securities. This type of instrument is generally classified within Level 1 of the fair-value hierarchy. The types of instruments valued based on other observable inputs (Level 2 of the fair-value hierarchy) include investment-grade corporate bonds and commercial paper. Such types of investments are valued by using a multi-dimensional relational model, the inputs are primarily benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data including market research publications. The Company does not hold any instruments that would be classified within Level 3 of the fair-value hierarchy.

The fair value hierarchy of the Company's cash equivalents and marketable securities at December 31, 2025 and 2024, was as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Fair Value Measurement at** | **Fair Value Measurement at** | **Fair Value Measurement at** |
|  | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** |
| **(In thousands)** | <br>**Total Fair Value** | **Quoted Prices in**<br>**Active Markets for**<br>**Identical Assets**<br> **(Level 1)** | <br>**Significant Other**<br>**Observable Inputs**<br> **(Level 2)** |
| Commercial paper | $5555 | $— | $5555 |
| Corporate securities | 189258 |  | 189258 |
| Money market funds | 3559 | 3559 |  |
| U.S. government securities | 999 |  | 999 |
| &nbsp;&nbsp;Total | $199371 | $3559 | $195812 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | **Fair Value Measurement at** | **Fair Value Measurement at** | **Fair Value Measurement at** |
|  | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** |
| **(In thousands)** | <br>**Total Fair Value** | **Quoted Prices in**<br>**Active Markets for**<br>**Identical Assets**<br> **(Level 1)** | <br>**Significant Other**<br> **Observable Inputs**<br>**(Level 2)** |
| Commercial paper | $2048 | $— | $2048 |
| Corporate securities | 249023 |  | 249023 |
| Money market funds | 567 | 567 |  |
| U.S. government securities | 750 |  | 750 |
| &nbsp;&nbsp;Total | $252388 | $567 | $251821 |

---

The Company did not transfer any investments between Level 1 and Level 2 of the fair value hierarchy in the years ended December 31, 2025 and 2024.

[**Table of Contents**](#TOC)

5. MARKETABLE SECURITIES:

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at December 31, 2025, were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | | **Gross Unrealized** | **Gross Unrealized** | |
| **(In thousands)** | **Amortized**<br>**Cost** | **Gains** | **Losses** | **Estimated Fair**<br>**Market Value** |
| **Investments due in 3 months or less:** |  |  |  |  |
| &nbsp;&nbsp;Commercial paper | $1498 | $— | $— | $1498 |
| &nbsp;&nbsp;Corporate securities | 8152 | 8 |  | 8160 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 9650 | 8 |  | 9658 |
| **Investments due in 4-12 months:** |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | 32256 | 267 |  | 32523 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 32256 | 267 |  | 32523 |
| **Investments due in 12 months or greater:** |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | 146910 | 1665 | (1) | 148574 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 146910 | 1665 | (1) | 148574 |
| **Total marketable securities** | $188816 | $1940 | $(1) | $190755 |

---

Accrued interest receivable was $2.3 million at December 31, 2025 and was recorded within prepaid expenses and other current assets on the consolidated balance sheet.

Amortized cost and estimated fair market value of marketable securities classified as available-for-sale (excluding cash equivalents) at December 31, 2024, were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | | **Gross Unrealized** | **Gross Unrealized** | |
| **(In thousands)** | **Amortized**<br>**Cost** | **Gains** | **Losses** | **Estimated Fair**<br>**Market Value** |
| **Investments due in 3 months or less:** |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | $10972 | $4 | $(3) | $10973 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 10972 | 4 | (3) | 10973 |
| **Investments due in 4-12 months:** |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | 87346 | 159 | (19) | 87486 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 87346 | 159 | (19) | 87486 |
| **Investments due in 12 months or greater:** |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | 149817 | 860 | (113) | 150564 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | 149817 | 860 | (113) | 150564 |
| **Total marketable securities** | $248135 | $1023 | $(135) | $249023 |

---

Accrued interest receivable was $2.8 million at December 31, 2024 and was recorded within prepaid expenses and other current assets on the consolidated balance sheet.

[**Table of Contents**](#TOC)

As of December 31, 2025 and 2024 the Company had no marketable securities classified as available-for-sale (excluding cash equivalents) in a continuous unrealized loss position for which an allowance for credit losses was recorded. The following tables summarize marketable securities classified as available-for-sale (excluding cash equivalents) in a continuous unrealized loss position for which an allowance for credit losses was not recorded at December 31, 2025 and December 31, 2024:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Less Than 12 Months** | **Less Than 12 Months** | **12 Months or Longer** | **12 Months or Longer** | **Total** | **Total** |
| **(In thousands)** | **Estimated** <br>**Fair Market** <br>**Value** | **Gross**<br>**Unrealized** <br>**Losses** | **Estimated** <br>**Fair Market** <br>**Value** | **Gross**<br>**Unrealized** <br>**Losses** | **Estimated** <br>**Fair Market** <br>**Value** | **Gross**<br>**Unrealized** <br>**Losses** |
| **December 31, 2025** |  |  |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | $500 | $(1) | $— | $— | $500 | $(1) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total marketable securities | $500 | $(1) | $— | $— | $500 | $(1) |

---

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Less Than 12 Months** | **Less Than 12 Months** | **12 Months or Longer** | **12 Months or Longer** | **Total** | **Total** |
| **(In thousands)** | **Estimated** <br>**Fair Market** <br>**Value** | **Gross**<br>**Unrealized** <br>**Losses** | **Estimated** <br>**Fair Market** <br>**Value** | **Gross**<br>**Unrealized** <br>**Losses** | **Estimated** <br>**Fair Market** <br>**Value** | **Gross**<br>**Unrealized** <br>**Losses** |
| **December 31, 2024** |  |  |  |  |  |  |
| &nbsp;&nbsp;Corporate securities | $33777 | $(116) | $13244 | $(19) | $47021 | $(135) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total marketable securities | $33777 | $(116) | $13244 | $(19) | $47021 | $(135) |

---

The Company does not intend to sell and it is unlikely that it will be required to sell the securities prior to their anticipated recovery. The weighted average interest rate of investments at December 31, 2025 and 2024, was approximately 4.86% and 5.08%, respectively. In the years ended December 31, 2025 and 2024, no unrealized losses on marketable securities were recognized in income.

6. GOODWILL AND INTANGIBLE ASSETS:

Goodwill increased during the year ended December 31, 2024, due to the Company's acquisition of Odyssey Semiconductor Technologies ("Odyssey") (refer to Note 15, *Acquisition*, for details on the Company's Odyssey acquisition). Changes in the carrying amount of goodwill as of the December 31, 2025 and 2024 are as follows:

---

| | |
|:---|:---|
| **(in thousands)** | **Goodwill** |
| Balance at January 1, 2024 | $91849 |
| Goodwill acquired during the period | 3422 |
| Balance at December 31, 2024 | 95271 |
| Goodwill acquired during the period | - |
| Ending balance at December 31, 2025 | $95271 |

---

The $3.4 million of goodwill acquired in 2024, resulted from the purchase of Odyssey (see Note 15, *Acquisition*, for further details).

Intangible assets consist primarily of developed technology, in-process research and development, acquired licenses and domain name, and are reported net of accumulated amortization. In July 2024, the Company acquired the assets of Odyssey, a U.S. company and developer of vertical gallium-nitride ("GaN") transistor technology, resulting in the addition of in-process research and development of $4.9 million.

The Company amortizes the cost of all intangible assets over the estimated useful life of the developed technology and technology licenses, which range from two to twelve years, with the exception of $4.9 million of in-process research and development which will commence amortization once development is completed and products are available for sale as well as $1.3 million paid to acquire an internet domain name. The Company does not expect the amortization of its in-process research and development to begin in 2026. The Company acquired the rights to the internet domain name *www.power.com*, the Company's primary domain name; the cost to acquire the domain name has been recorded as an intangible asset and will not be amortized as it has an indefinite useful life.

[**Table of Contents**](#TOC)

Amortization of acquired intangible assets was approximately $0.8 million, $1.3 million and $2.2 million in the years ended December 31, 2025, 2024 and 2023, respectively. The Company does not believe there is any significant residual value associated with the following intangible assets:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **December 31, 2025** | **December 31, 2025** | **December 31, 2025** | **December 31, 2024** | **December 31, 2024** | **December 31, 2024** |
| **(In thousands)** | <br>**Gross** | **Accumulated**<br>**Amortization** | <br>**Net** | <br>**Gross** | **Accumulated**<br>**Amortization** | <br>**Net** |
| Domain name | $1261 | $— | $1261 | $1261 | $— | $1261 |
| In-process research and development | 4930 |  | 4930 | 4930 |  | 4930 |
| Developed technology | 37960 | (37081) | 879 | 37960 | (36492) | 1468 |
| Technology licenses | 1926 | (1752) | 174 | 1926 | (1510) | 416 |
| &nbsp;&nbsp;Total intangible assets | $46077 | $(38833) | $7244 | $46077 | $(38002) | $8075 |

---

The estimated future amortization expense related to definite-lived intangible assets at December 31, 2025, is as follows:

---

| | |
|:---|:---|
| **Fiscal Year** | **Estimated** <br>**Amortization**<br>**(In thousands)** |
| 2026 | $687 |
| 2027 | 365 |
| &nbsp;&nbsp;Total\* | $1052 |

---

\* Total excludes $4.9 million of in-process research and development which will be amortized upon completion of development over the estimated useful life of the technology.

7. STOCK PLANS AND SHARE BASED COMPENSATION:

#### Stock Plans
As of December 31, 2025, the Company had three stock-based compensation plans (the "Plans") which are described below.

*2025 Inducement Award Plan*

The 2025 Inducement Award Plan ("Inducement Plan") was adopted by the board of directors on November 14, 2025. The Inducement Plan provides for the grant of RSU awards, PSU awards and performance cash awards. No other forms of equity-based awards, including stock options and stock appreciation rights, may be granted. The plan is intended to be used in connection with the recruiting and inducement of senior management and employees. Each award under the Inducement Plan is intended to qualify as an employment inducement grant under the Inducement Listing Rule or to otherwise qualify under the exception relating to plans or arrangements relating to an acquisition or merger under NASDAQ Listing Rule 5635(c)(3) and the official guidance thereunder. Pursuant to Rule 5635(c)(4) of the NASDAQ Listing Rules, the Company did not seek stockholder's approval. As of December 31, 2025, 0.1 million awards have been issued, net of forfeitures or cancellations, and approximately 0.3 million shares of common stock remain available for future grant under the Inducement Plan. On January 27, 2026, the Talent and Compensation Committee of the board of directors approved the Amended and Restated 2025 Inducement Award Plan, reserving an additional 0.5 million shares of the Company's common stock, or 0.9 million shares of the Company's common stock in the aggregate, for issuance pursuant to equity awards granted under the Inducement Plan.

*2016 Incentive Award Plan*

The 2016 Incentive Award Plan ("2016 Plan") was adopted by the board of directors on March 17, 2016 and approved by the stockholders on May 13, 2016. The 2016 Plan provides for the grant of RSU awards, PSU awards and PRSU awards. No other forms of equity-based awards, including stock options and stock appreciation rights, may be granted under the 2016 Plan. As of December 31, 2025, 4.4 million awards have been issued, net of forfeitures or cancellations, and approximately 2.6 million shares of common stock remain available for future grant under the 2016 Plan.

[**Table of Contents**](#TOC)

*1997 Employee Stock Purchase Plan*

Under the 1997 Employee Stock Purchase Plan ("Purchase Plan"), eligible employees may apply accumulated payroll deductions, which may not exceed 15% of an employee's compensation, to the purchase of shares of the Company's common stock at periodic intervals. The purchase price of stock under the Purchase Plan is equal to 85% of the lower of (i) the fair market value of the Company's common stock on the first day of each offering period, or (ii) the fair market value of the Company's common stock on the purchase date (as defined in the Purchase Plan). Each offering period consists of one purchase period of approximately six months duration. An aggregate of 7.5 million shares of common stock were reserved for issuance to employees under the Purchase Plan. As of December 31, 2025, of the shares reserved for issuance, 7.1 million shares had been purchased and 0.4 million shares were reserved for future issuance under the Purchase Plan.

*Shares Reserved*

As of December 31, 2025, the Company had approximately 3.5 million shares of common stock reserved for future grant under all stock plans.

#### Stock-Based Compensation
The Company applies the provisions of ASC 718-10, *Stock Compensation*. Under the provisions of ASC 718-10, the Company recognizes the fair value of stock-based compensation in its financial statements over the requisite service period of the individual grants, which generally equals a four-year vesting period. The Company uses estimates of volatility, expected term, risk-free interest rate, dividend yield and forfeitures in determining the fair value of these awards and the amount of compensation expense to recognize. The Company uses the straight-line method to amortize all stock awards granted over the requisite service period of the award.

The following table summarizes the stock-based compensation expense recognized in accordance with ASC 718-10 for the years ended December 31, 2025, 2024 and 2023:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| Cost of revenue | $1998 | $2090 | $1692 |
| Research and development | 10235 | 12587 | 10939 |
| Sales and marketing | 6460 | 8064 | 6888 |
| General and administrative | 12563 | 12335 | 9009 |
| Other operating expenses | 8434 |  |  |
| &nbsp;&nbsp;Total stock-based compensation expense | $39690 | $35076 | $28528 |

---

The following table summarizes total compensation expense related to unvested awards not yet recognized, net of expected forfeitures, and the weighted average period over which it is expected to be recognized as of December 31, 2025:

---

| | | |
|:---|:---|:---|
|  | **Unrecognized Compensation**<br>**Expense for Unvested**<br>**Awards**<br>**(In thousands)** | **Weighted Average**<br>**Remaining Recognition**<br>**Period**<br>**(In years)** |
| Long-term performance-based awards | $5278 | 1.74 |
| Restricted stock units | 43058 | 2.65 |
| Purchase plan | 171 | 0.08 |
| Total unrecognized compensation expense | $48507 |  |

---

Stock-based compensation expense in the year ended December 31, 2025, was approximately $39.7 million, comprising approximately $22.8 million related to restricted stock units, $8.4 million related to the modification of outstanding equity awards held by the Company's former chief executive officer, $6.9 million related to performance-based awards and long-term performance-based awards and $1.6 million related to the Company's employee stock purchase plan.

Stock-based compensation expense in the year ended December 31, 2024, was approximately $35.1 million, comprising approximately $25.7 million related to restricted stock units, $7.7 million related to performance-based awards and long-term performance-based awards and $1.7 million related to the Company's employee stock purchase plan.

[**Table of Contents**](#TOC)

Stock-based compensation expense in the year ended December 31, 2023, was approximately $28.5 million, comprising approximately $23.4 million related to restricted stock units, $3.2 million related to performance-based awards and long-term performance-based awards and $1.9 million related to the Company's employee stock purchase plan.

In connection with his retirement in July 2025, the Company's former chief executive officer, Balu Balakrishnan, entered into a transition agreement and a consulting agreement with the Company. Pursuant to these agreements, Mr. Balakrishnan's outstanding equity awards continue to vest subject to his continuous service and the applicable award agreements. The vast majority of these awards are subject to performance criteria established at the time of grant and will only be earned if such criteria are met at the conclusion of the applicable performance periods. As the services to be performed by Mr. Balakrishnan under the transition agreement and the consulting agreement do not qualify as "substantive services" under ASC 718-10*,* the continued vesting of the outstanding equity awards represents a modification of the original awards. As a result, in the year ended December 31, 2025, the Company recognized stock-based compensation in the amount of $8.4 million in other operating expenses on the consolidated statements of income related to the accounting modification in July 2025 and subsequent changes in performance criteria measurement. Further subsequent changes in performance criteria measurement could result in an adjustment to expense in future periods.

*Employee Stock Purchase Plan*

The fair value of employees' stock purchase rights under the Purchase Plan was estimated using the Black-Scholes model with the following weighted-average assumptions used during the three years ended December 31, 2025, 2024 and 2023:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
|  | **2025** | **2024** | **2023** |
| Risk-free interest rates | 4.21% | 5.15% | 5.15% |
| Expected volatility rates | 46% | 36% | 37% |
| Expected dividend yield | 1.58% | 1.15% | 0.90% |
| Expected term of purchase rights (in years) | 0.50 | 0.50 | 0.49 |
| Weighted-average estimated fair value of purchase rights | $14.81 | $18.27 | $23.75 |

---

*PSU Awards*

Under the performance-based awards program, the Company grants awards in the performance year in an amount equal to twice the target number of shares to be issued if the maximum performance metrics are met. The number of shares that are released at the end of the performance year can range from zero to 200% of the target number depending on the Company's performance. The performance metrics of this program are annual targets consisting of a combination of net revenue, non-GAAP operating income and strategic goals.

As the net revenue, non-GAAP operating income and strategic goals are considered performance conditions, expense associated with these awards, net of estimated forfeitures, is recognized over the service period based on an assessment of the expected achievement of the performance targets. The fair value of these PSUs is determined using the fair value of the Company's common stock on the date of the grant, reduced by the discounted present value of dividends expected to be declared before the awards vest. If the performance conditions are not achieved, no compensation cost is recognized and any previously recognized compensation is reversed.

[**Table of Contents**](#TOC)

A summary of PSU awards outstanding as of December 31, 2025, and activity during the three years then ended, is presented below:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | <br>**Shares**<br>**(In thousands)** | <br>**Weighted-Average**<br>**Grant Date Fair**<br>**Value Per Share** | **Weighted-**<br>**Average**<br>**Remaining**<br>**Contractual Term**<br>**(In years)** | <br>**Aggregate**<br>**Intrinsic Value**<br>**(In thousands)** |
| Outstanding at January 1, 2023 | 34 | $79.94 |  |  |
| Granted | 131 | $82.96 |  |  |
| Vested | (34) | $79.94 |  |  |
| Forfeited or canceled | (93) | $82.96 |  |  |
| Outstanding at December 31, 2023 | 38 | $82.95 |  |  |
| Granted | 185 | $69.97 |  |  |
| Vested | (38) | $82.94 |  |  |
| Forfeited or canceled | (119) | $69.98 |  |  |
| Outstanding at December 31, 2024 | 66 | $69.95 |  |  |
| Granted | 218 | $53.61 |  |  |
| Vested | (66) | $69.95 |  |  |
| Forfeited or canceled | (143) | $53.82 |  |  |
| Outstanding at December 31, 2025 | 75 | $53.21 |  | $2667 |
| Outstanding and expected to vest at December 31, 2025 | 75 |  |  | $2667 |

---

In February 2025, it was determined that approximately 66,000 shares subject to the PSUs granted in 2024 vested in aggregate; the shares were released to the Company's employees and executives in the first quarter of 2025. The grant-date fair value of PSU awards released, which were fully vested, in the years ended December 31, 2025, 2024 and 2023, was approximately $4.6 million, $3.2 million and $2.7 million, respectively.

*PRSU Awards (Long-term Performance Based)*

The Company's PRSU program provides for the issuance of PRSUs which will vest based on the Company's performance measured against the PRSU program's established performance targets. PRSUs are granted in an amount equal to twice the target number of shares to be issued if the maximum performance metrics are met. The actual number of shares the recipient receives is determined at the end of a three-year performance period based on results achieved versus the Company's performance goals, and may range from zero to 200% of the target number. The performance goals for PRSUs granted in fiscal 2023, 2024 and 2025 were based on the Company's compound annual growth rate ("CAGR") of revenue as measured against the revenue CAGR of the analog semiconductor industry ("Relative Measure") or the Company's revenue growth over as compared to defined targets ("Absolute Measure") in each case over the respective three-year performance period. Actual vesting of the PRSUs is calculated based on higher achievement under the Relative Measure or the Absolute Measure.

Expense associated with these awards, net of estimated forfeitures, is recorded throughout the year based on an assessment of the expected achievement of the performance targets. If the performance conditions are not achieved, no compensation cost is recognized and any previously recognized compensation is reversed.

[**Table of Contents**](#TOC)

A summary of PRSU awards outstanding as of December 31, 2025, and activity during the three years then ended, is presented below:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | <br>**Shares**<br>**(In thousands)** | <br>**Weighted-Average**<br>**Grant Date Fair**<br> **Value Per Share** | **Weighted-Average**<br>**Remaining**<br>**Contractual Term**<br>**(In years)** | **Aggregate**<br>**Intrinsic**<br>**Value**<br>**(In thousands)** |
| Outstanding at January 1, 2023 | 236 | $77.82 |  |  |
| Granted | 146 | $80.92 |  |  |
| Vested | (23) | $49.68 |  |  |
| Forfeited or canceled | (103) | $82.92 |  |  |
| Outstanding at December 31, 2023 | 256 | $80.08 |  |  |
| Granted | 186 | $68.30 |  |  |
| Vested |  |  |  |  |
| Forfeited or canceled | (125) | $78.34 |  |  |
| Outstanding at December 31, 2024 | 317 | $73.85 |  |  |
| Granted | 307 | $52.56 |  |  |
| Vested |  |  |  |  |
| Forfeited or canceled | (179) | $76.85 |  |  |
| Outstanding at December 31, 2025 | 445 | $57.97 | 1.64 | $15829 |
| Outstanding and expected to vest at December 31, 2025 | 259 |  | 1.85 | $9220 |

---

In February 2025, it was determined that no shares subject to the PRSUs granted in 2022 vested, thus no shares were released to the Company's executives. In February 2024, it was determined that no shares subject to the PRSUs granted in 2021 vested, thus no shares were released to the Company's executives. The grant-date fair value of PRSU awards released, which were fully vested, in the year ended December 31, 2023, was approximately $1.1 million.

*RSU Awards*

RSUs granted to employees typically vest ratably over a four-year period and are converted into shares of the Company's common stock upon vesting on a one-for-one basis subject to the employee's continued service to the Company over that period. The fair value of RSUs is determined using the fair value of the Company's common stock on the date of the grant, reduced by the discounted present value of dividends expected to be declared before the awards vest. Compensation expense is recognized on a straight-line basis over the requisite service period of each grant adjusted for estimated forfeitures.

A summary of RSU awards outstanding as of December 31, 2025, and activity during the three years then ended, is presented below:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | <br>**Shares**<br>**(In thousands)** | <br>**Weighted-Average**<br>**Grant Date Fair**<br> **Value Per Share** | **Weighted-Average**<br>**Remaining**<br>**Contractual Term**<br>**(In years)** | **Aggregate**<br>**Intrinsic**<br>**Value**<br>**(In thousands)** |
| Outstanding at January 1, 2023 | 1096 | $60.52 |  |  |
| Granted | 335 | $80.97 |  |  |
| Vested | (418) | $53.08 |  |  |
| Forfeited | (32) | $73.29 |  |  |
| Outstanding at December 31, 2023 | 981 | $70.27 |  |  |
| Granted | 440 | $67.09 |  |  |
| Vested | (371) | $64.28 |  |  |
| Forfeited | (121) | $72.87 |  |  |
| Outstanding at December 31, 2024 | 929 | $70.82 |  |  |
| Granted | 612 | $44.28 |  |  |
| Vested | (350) | $62.54 |  |  |
| Forfeited | (179) | $35.53 |  |  |
| Outstanding at December 31, 2025 | 1012 | $63.87 | 1.47 | $35954 |
| Outstanding and expected to vest at December 31, 2025 | 952 |  | 1.42 | $33846 |

---

The grant-date fair value of RSUs vested in the years ended December 31, 2025, 2024 and 2023, was approximately $21.9 million, $23.9 million and $22.2 million, respectively.

[**Table of Contents**](#TOC)

8. SIGNIFICANT CUSTOMERS AND GEOGRAPHIC NET REVENUE:

*Customer Concentration*

The Company's top ten customers accounted for approximately 81%, 79% and 80% of revenue in 2025, 2024 and 2023, respectively. A significant portion of these revenue are attributable to sales of the Company's products to distributors of electronic components. These distributors sell the Company's products to a broad, diverse range of end users, including OEMs and merchant power supply manufacturers. Similarly, merchant power-supply manufacturers sell power supplies incorporating the Company's products to a broad range of OEMs. Sales to distributors in 2025, 2024 and 2023 were $304.6 million, $292.9 million and $307.4 million, respectively. Direct sales to OEMs and power-supply manufacturers accounted for the remainder.

The following customers represented 10% or more of the Company's net revenue for the respective years:

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| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **Customer** | **2025** | **2024** | **2023** |
| Avnet | 32% | 30% | 27% |
| Salcomp Group | 11% | \* | 10% |
| Honestar Technologies Co., Ltd. | \* | 11% | 18% |

---

\*Total customer revenue was less than 10% of net revenue.

No other customers accounted for 10% or more of the Company's net revenue in the periods presented.

*Concentration of Credit Risk*

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash investments and trade receivables. The Company does not have any off-balance-sheet credit exposure related to its customers. As of December 31, 2025 and 2024, 89% and 87% of accounts receivable were concentrated with the Company's top ten customers, respectively.

The following customers represented 10% or more of accounts receivable:

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **Customer** | **2025** | **2024** |
| Avnet | 32% | 32% |
| Salcomp Group | 18% | 13% |
| Honestar Technologies Co., Ltd. | 11% | 12% |

---

No other customers accounted for 10% or more of the Company's accounts receivable in the periods presented.

*Geographic Net Revenue*

The Company markets its products globally through its sales personnel and a worldwide network of independent sales representatives and distributors. Geographic net revenue by region and country with 5% or more of the Company's revenue during any of the periods presented, based on "bill to" customer locations were as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| Americas | $22874 | $20888 | $22165 |
| EMEA: |  |  |  |
| &nbsp;&nbsp;Germany | 27235 | 22047 | 23041 |
| &nbsp;&nbsp;Other EMEA | 22994 | 22866 | 27820 |
| APAC: |  |  |  |
| &nbsp;&nbsp;Hong Kong/China | 245909 | 238477 | 265936 |
| &nbsp;&nbsp;India | 23649 | 27820 | 34558 |
| &nbsp;&nbsp;Korea | 39537 | 37790 | 24956 |
| &nbsp;&nbsp;Taiwan | 25518 | 22202 | 15774 |
| &nbsp;&nbsp;Other APAC | 35788 | 26883 | 30288 |
| Total net revenue | $443504 | $418973 | $444538 |

---

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9. COMMON STOCK REPURCHASES AND CASH DIVIDENDS:

#### Common Stock Repurchases
From time to time the Company's board of directors has authorized the use of funds to repurchase shares of the Company's common stock. As of December 31, 2024, the Company had $48.1 million available under a stock-repurchase program announced in November 2024. After this authorization was exhausted in April 2025, the Company's board of directors authorized the use of an additional $50.0 million for the repurchase of the Company's common stock, with repurchases to be executed according to pre-defined price/volume guidelines. In 2025, 2024 and 2023, the Company purchased approximately 2.0 million shares, 0.4 million shares and 0.8 million shares, respectively, for approximately $98.1 million, $27.9 million and $55.3 million, respectively. As of December 31, 2025, the Company had exhausted their repurchase authorization. Any future repurchase program would be authorized at the discretion of the Company's board of directors and will depend on the Company's financial condition, results of operations, capital requirements, business conditions and other factors.

#### Common Stock Dividends
The following table presents the quarterly dividends declared per share of the Company's common stock for the periods indicated:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
|  | **2025** | **2024** | **2023** |
| First Quarter | $0.21 | $0.20 | $0.19 |
| Second Quarter | $0.21 | $0.20 | $0.19 |
| Third Quarter | $0.21 | $0.20 | $0.19 |
| Fourth Quarter | $0.21 | $0.21 | $0.20 |

---

The Company paid approximately $47.2 million, $46.0 million and $44.0 million in cash dividends during 2025, 2024 and 2023, respectively.

In February 2023, the Company's board of directors declared dividends of $0.19 per share to be paid to stockholders of record at the end of each quarter in 2023. In October 2023, the Company's board of directors raised the cash dividend with the declaration of four cash dividends of $0.20 per share to be paid to stockholders of record at the end of the fourth quarter in 2023 (in lieu of the $0.19 per share announced in February 2023) and at the end of each quarter in 2024.

In October 2024, the Company's board of directors raised the cash dividend with the declaration of five cash dividends of $0.21 per share to be paid to stockholders of record at the end of the fourth quarter in 2024 (in lieu of the $0.20 per share announced in October 2023) and at the end of each quarter in 2025.

In October 2025, the Company's board of directors raised the quarterly cash dividend with the declaration of four cash dividends of $0.215 per share to be paid at the end of each quarter in 2026.

10. EARNINGS PER SHARE:

Basic earnings per share are calculated by dividing net income by the weighted-average shares of common stock outstanding during the period. Diluted earnings per share are calculated by dividing net income by the weighted-average shares of common stock and dilutive common equivalent shares outstanding during the period. Dilutive common equivalent shares included in this calculation consist of the assumed vesting of outstanding restricted stock units, the assumed issuance of awards under the stock purchase plan and contingently issuable performance-based awards, as computed using the treasury stock method.

[**Table of Contents**](#TOC)

A summary of the earnings per share calculation is as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands, except per share amounts)** | **2025** | **2024** | **2023** |
| Basic earnings per share: |  |  |  |
| &nbsp;&nbsp;Net income | $22093 | $32234 | $55735 |
| &nbsp;&nbsp;Weighted-average common shares | 56063 | 56820 | 57195 |
| &nbsp;&nbsp;Basic earnings per share | $0.39 | $0.57 | $0.97 |
| Diluted earnings per share: <sup>(1)</sup> |  |  |  |
| &nbsp;&nbsp;Net income | $22093 | $32234 | $55735 |
| &nbsp;&nbsp;Weighted-average common shares | 56063 | 56820 | 57195 |
| &nbsp;&nbsp;Effect of dilutive awards: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Employee stock plans | 261 | 310 | 427 |
| &nbsp;&nbsp;Diluted weighted-average common shares | 56324 | 57130 | 57622 |
| &nbsp;&nbsp;Diluted earnings per share | $0.39 | $0.56 | $0.97 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) The Company includes the shares underlying performance-based awards in the calculation of diluted earnings per share if the performance conditions have been satisfied as of the end of the reporting period and excludes such shares when the necessary conditions have not been met. The Company has excluded the shares underlying the outstanding performance-based awards in the 2025, 2024 and 2023 calculations as the shares were not contingently issuable as of the end of the respective periods.

In the years ended December 31, 2025, 2024 and 2023, no outstanding stock awards were determined to be anti-dilutive and excluded from the computation of diluted earnings per share.

11. PROVISION (BENEFIT) FOR INCOME TAXES:

*Income Taxes*

The Company accounts for income taxes under the provisions of ASC 740, *Income Taxes*. Under the provisions of ASC 740, deferred tax assets and liabilities are recognized based on the differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases, utilizing the tax rates that are expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled.

U.S. and foreign components of income before income taxes were:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| U.S. operations | $(25273) | $(4521) | $2995 |
| Foreign operations | 46252 | 35275 | 42912 |
| &nbsp;&nbsp;Total income before income taxes | $20979 | $30754 | $45907 |

---

The Company's effective tax rate is impacted by the geographic distribution of the Company's world-wide earnings in lower-tax jurisdictions, federal research tax credits and the recognition of excess tax benefits related to share-based payments. The rate was further reduced by the release of federal uncertain tax position caused by an expiration in the statute of limitations on these positions. These benefits were partially offset by foreign income subject to U.S. tax, known as Net Controlled Foreign Corporation Tested Income ("NCTI"). The Company's primary jurisdiction where foreign earnings are derived is the Cayman Islands, which is a non-taxing jurisdiction. Income earned in other foreign jurisdictions was not material. The Company has not been granted any incentivized tax rates and does not operate under any tax holidays in any jurisdiction.

The Company has adopted Accounting Standards Update ("ASU") 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures," on a prospective basis for the year ended December 31, 2025. See Note 2. Significant Accounting Policies - Adoption of New Accounting Standards for additional details on the adoption of ASU 2023-09.

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The provision (benefit) for income taxes differs from the amount that would result by applying the applicable federal income tax rate to income before income taxes, as follows:

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  |
|  | **2025** | **2025** |
| **(In thousands)** | **Amount** | **Percent** |
| U.S. Federal Statutory Tax Rate | $4406 | 21.0% |
| State and Local Income Taxes, Net of Federal Income Tax Effect (a) | (512) | (2.4) |
| Foreign tax effects |  |  |
| Cayman |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;Statutory tax rate difference between Cayman and United States | (8439) | (40.2) |
| &nbsp;&nbsp;Other foreign jurisdictions | (440) | (2.1) |
| Enacted changes in tax laws or rates  | 1002 | 4.8 |
| Effect of Cross-Border Tax Laws |  |  |
| &nbsp;&nbsp;Global intangible low-taxed income | 3040 | 14.5 |
| Tax Credits |  |  |
| &nbsp;&nbsp;Research and development tax credits | (2793) | (13.3) |
| &nbsp;&nbsp;Energy-related tax credits | (1258) | (6.0) |
| Nontaxable and Nondeductible Items |  |  |
| &nbsp;&nbsp;Share-based payment awards | 3620 | 17.2 |
| &nbsp;&nbsp;Other | 243 | 1.1 |
| Change in Unrecognized Tax Benefits | 17 | 0.1 |
| Total | $(1114) | (5.3)% |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) State taxes in California made up the majority (greater than 50%) of the tax effect in this category.

As previously disclosed for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09, the components of the benefits for income taxes were as follows:

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2024** | **2023** |
| Current provision (benefit): |  |  |
| &nbsp;&nbsp;Federal | $5876 | $(1193) |
| &nbsp;&nbsp;State | 3 | 3 |
| &nbsp;&nbsp;Foreign | 1392 | 1331 |
|  | 7271 | 141 |
| Deferred provision (benefit): |  |  |
| &nbsp;&nbsp;Federal | (8177) | (9178) |
| &nbsp;&nbsp;State |  |  |
| &nbsp;&nbsp;Foreign | (574) | (791) |
|  | (8751) | (9969) |
| &nbsp;&nbsp;&nbsp;&nbsp;Total | $(1480) | $(9828) |

---

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As previously disclosed for the years ended December 31, 2024 and 2023, prior to the adoption of ASU 2023-09, the effective income tax rate differs from the statutory federal income tax rate as follows:

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  |
|  | **2024** | **2023** |
| Provision (benefit) computed at Federal statutory rate | 21.0% | 21.0% |
| Business tax credits | (14.6) | (12.2) |
| Stock-based compensation | 6.4 | (0.1) |
| Foreign income taxed at different rate | (21.0) | (17.6) |
| GILTI inclusion | 2.4 | 4.1 |
| Uncertain tax positions | (3.7) | (18.6) |
| Valuation allowance | 5.3 | 4.3 |
| Other | (0.6) | (2.3) |
| Total | (4.8)% | (21.4)% |

---

The components of the net deferred income tax assets (liabilities) were as follows:

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **(In thousands)** | **2025** | **2024** |
| Deferred tax assets: |  |  |
| R&D costs capitalized for tax purposes | $36717 | $39807 |
| Other reserves and accruals | 6189 | 3598 |
| Tax credit carry-forwards | 31968 | 29558 |
| Stock compensation | 4175 | 3155 |
| Capital losses | 140 | 140 |
| Net operating loss | 1761 | 2268 |
| Other | 366 | 421 |
| Valuation allowance | (34868) | (32659) |
|  | 46448 | 46288 |
| Deferred tax liabilities: |  |  |
| Fixed assets, Intangible and Goodwill | (10865) | (9814) |
|  | (10865) | (9814) |
| Net deferred tax assets | $35583 | $36474 |

---

In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. Management considers the scheduled reversal of deferred tax liabilities and projected future taxable income. In the event that the Company determines, based on available evidence and management judgment, that all or part of the net deferred tax assets will not be realized in the future, the Company would record a valuation allowance in the period the determination is made. In addition, the calculation of tax liabilities involves significant judgment in estimating the impact of uncertainties in the application of complex tax laws. Resolution of these uncertainties in a manner inconsistent with the Company's expectations could have a material impact on its results of operations and financial position.

As of December 31, 2025, the Company continues to maintain a valuation allowance primarily as a result of its California, New Jersey and Canada deferred tax assets as the Company believes that it is not more likely than not that the deferred tax assets will be realized.

As of December 31, 2025, the Company had utilized all its federal research and development tax credit carry-forwards. As of December 31, 2025, the Company had California research and development tax credit carry-forwards of approximately $46.0 million (there is no expiration of research and development tax credit carry-forwards for the state of California) and California net operating losses of $36.9 million, which will begin to expire in 2032. As of December 31, 2025, the Company had Canadian scientific research and experimental development tax credit carry-forwards of approximately $3.9 million and New Jersey research and experimental development tax credit carry-forwards of approximately $1.0 million, which will start to expire in 2033 and 2026, respectively.

Tax law signed into law on December 22, 2017, generally allows companies to repatriate accumulated foreign earnings without incurring additional U.S. federal taxes beginning after December 31, 2017. Local foreign and U.S. states taxes may still be incurred upon repatriation. The Company has not provided for U.S. taxes on its undistributed earnings of foreign subsidiaries. The determination of the future tax consequences of the remittance of these earnings is not practicable.

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The foregoing items could have a material effect on our business, cash flow, results of operations or financial conditions.

*Unrecognized Tax Benefits*

The Company applies the provisions of ASC 740-10, relating to accounting for uncertain income taxes. Reconciliation of the beginning and ending amount of unrecognized tax benefits:

---

| | |
|:---|:---|
| **(In thousands)** | **Unrecognized** <br>**Tax Benefits** |
| Unrecognized tax benefits balance at January 1, 2023 | $23386 |
| Gross increase for tax positions of current year | 605 |
| Gross decrease for tax positions of prior years |  |
| Statute of limitation release for tax positions of prior years | (7602) |
| Unrecognized tax benefits balance at December 31, 2023 | 16389 |
| Gross increase for tax positions of current year | 765 |
| Gross decrease for tax positions of prior years | (876) |
| Statute of limitation release for tax positions of prior years | (1103) |
| Unrecognized tax benefits balance at December 31, 2024 | 15175 |
| Gross increase for tax positions of current year | 1432 |
| Gross decrease for tax positions of prior years |  |
| Statute of limitation release for tax positions of prior years | (1281) |
| Unrecognized tax benefits balance at December 31, 2025 | $15326 |

---

The Company's total unrecognized tax benefits as of December 31, 2025, 2024 and 2023, were $15.3 million, $15.2 million and $16.4 million, respectively. An income tax benefit of $3.3 million, net of valuation allowance adjustments, would be recorded if fiscal year 2025 unrecognized tax benefits are recognized.

The Company's continuing practice is to recognize interest and/or penalties related to income tax matters in income tax expense. The Company had accrued interest and penalties of $0.5 million and $0.3 million as of December 31, 2025 and 2024, respectively, which have been recorded in long-term income taxes payable in the accompanying consolidated balance sheets.

As of December 31, 2025, the Company's tax returns continue to remain effectively subject to examination by U.S. federal authorities for the years after 2021. The Company has closed its audit with the California Franchise Tax Board for the tax years 2018 and 2019 without material change. The California Franchise Tax Board has started an audit for the tax years 2020 through 2022, which is currently ongoing.

The amount of cash taxes paid by the Company is as follows:

---

| | |
|:---|:---|
|  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** |
| Federal | $1668 |
| State | 58 |
| Foreign |  |
| &nbsp;&nbsp;China | 440 |
| &nbsp;&nbsp;Germany | 218 |
| &nbsp;&nbsp;Switzerland | 190 |
| &nbsp;&nbsp;Other foreign\* | 457 |
| Income Taxes, net of amounts refunded | $3031 |

---

\* The amount of income taxes paid during the year does not meet the 5% disaggregation threshold.

12. LEASES AND COMMITMENTS:

*Facilities and Leases*

The Company owns its main executive, administrative, manufacturing and technical offices in San Jose, California. The Company also owns a research and development facility in New Jersey, a design center in Germany and a multipurpose office building in Switzerland. The Company's leases consist of operating leases for administrative office spaces, research-and-development facilities and sales offices in various countries around the world. The Company determines whether an arrangement is a lease at inception. Some lease agreements contain lease and non-lease components, which are accounted for as a single lease component. Total lease expense was $4.4 million, $3.9 million and $3.6 million

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for the years ended December 31, 2025, 2024 and 2023; short-term and variable lease expenses were not material during these periods.

Balance sheet information related to leases was as follows:

---

| | | | |
|:---|:---|:---|:---|
|  |  | **December 31,**  | **December 31,**  |
| **(In thousands)** | **Balance Sheet Classification** | **2025** | **2024** |
| **Right-of-use assets** |  |  |  |
| Operating lease assets | Other assets | $19427 | $16076 |
| **Lease liabilities** |  |  |  |
| Current operating lease liabilities | Other accrued liabilities | $2984 | $2929 |
| Non-current operating lease liabilities | Other liabilities | 15899 | 12631 |
| &nbsp;&nbsp;Total |  | $18883 | $15560 |

---

Initial lease terms are determined at commencement and may include options to extend or terminate the lease when it is reasonably certain the Company will exercise the option. Remaining lease terms range from one to nine years, some of which include options to extend for up to six years, and some of which include options to terminate within one year. Leases with an initial term of twelve months or less are not recorded on the balance sheet. As the Company's leases do not provide an implicit rate, the present value of future lease payments is determined using the Company's incremental borrowing rate based on information available at commencement date.

---

| | | |
|:---|:---|:---|
|  | **December 31,**  | **December 31,**  |
| **Lease term and discount rate** | **2025** | **2024** |
| Weighted average remaining lease term | 6.1<br> years | 5.8<br> years |
| Weighted average discount rate | 6.6% | 6.7% |

---

Supplemental cash flows information related to leases was as follow:

---

| | | |
|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** |
| Cash paid for amounts included in the measurement of lease liabilities: |  |  |
| &nbsp;&nbsp;Operating cash flows from operating leases | $4393 | $4008 |
| Right-of-use assets obtained in exchange for new operating lease obligations | $6473 | $9495 |

---

Future minimum lease payments under all non-cancelable lease agreements as of December 31, 2025, are as follows:

---

| | |
|:---|:---|
|  | **December 31,**  |
| **(In thousands)** | **2025** |
| 2026 | $4161 |
| 2027 | 4163 |
| 2028 | 3611 |
| 2029 | 3183 |
| 2030 | 2999 |
| Thereafter | 5595 |
| &nbsp;&nbsp;Total future minimum lease payments | 23712 |
| Less imputed interest | (4829) |
| &nbsp;&nbsp;Total | $18883 |

---

*Purchase Obligations*

At December 31, 2025, the Company had no non-cancelable purchase obligations that were due beyond one year.

13. SEGMENT REPORTING:

The Company is organized and operates as one operating and reportable segment; the design, development, manufacture and marketing of integrated circuits and related components for use primarily in high-voltage power conversion. This determination is based on the management approach which designates internal information regularly available to the Chief Operating Decision Maker ("CODM") for making decisions and assessing performance as the source of determination of the Company's reportable segments. The Company's CODM, the Chief Executive Officer, reviews financial information presented on a consolidated basis for the purpose of making operating decisions and assessing financial performance.

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The CODM uses net income as the measure of profit or loss to allocate resources and assess performance. The CODM regularly reviews net income as reported on the Company's consolidated statements of income. Financial forecasts and budget to actual results used by the CODM to assess performance and allocate resources, as well as those used for strategic decisions related to headcount and capital expenditures are also reviewed on a consolidated basis. The CODM considers the impact on net income of the significant segment expenses in the table below when deciding whether to reinvest profits, propose dividends or share repurchase, or pursue strategic mergers and acquisitions.

The measure of segment assets is reported on the balance sheet as total assets. The CODM does not review segment assets at a level other than that presented in the Company's consolidated balance sheets.

The table below presents the Company's consolidated operating results including significant segment expenses:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| NET REVENUE | $443504 | $418973 | $444538 |
| Less:  |  |  |  |
| &nbsp;&nbsp;Stock-based compensation (1) | 39690 | 35076 | 28528 |
| &nbsp;&nbsp;Amortization of acquisition-related intangible assets (2) | 587 | 1034 | 1928 |
| &nbsp;&nbsp;Cost of revenue (excluding 1 & 2) | 199270 | 191098 | 211962 |
| &nbsp;&nbsp;Research and development (excluding 1) | 90881 | 88203 | 85128 |
| &nbsp;&nbsp;Sales and marketing (excluding 1) | 61492 | 59761 | 57710 |
| &nbsp;&nbsp;General and administrative (excluding 1) | 30138 | 25872 | 24223 |
| &nbsp;&nbsp;Other operating expenses (excluding 1) | 11252 |  |  |
| INCOME FROM OPERATIONS | 10194 | 17929 | 35059 |
| OTHER INCOME | 10785 | 12825 | 10848 |
| PROVISION (BENEFIT) FOR INCOME TAXES | (1114) | (1480) | (9828) |
| NET INCOME | $22093 | $32234 | $55735 |

---

The table below presents other segment information:

---

| | | | |
|:---|:---|:---|:---|
|  | **Year Ended December 31,**  | **Year Ended December 31,**  | **Year Ended December 31,**  |
| **(In thousands)** | **2025** | **2024** | **2023** |
| &nbsp;&nbsp;&nbsp;&nbsp;Depreciation | $27195 | $33303 | $35203 |
| &nbsp;&nbsp;&nbsp;&nbsp;Amortization of intangibles  | $831 | $1279 | $2173 |
| &nbsp;&nbsp;&nbsp;&nbsp;Interest income | $11682 | $13576 | $11655 |

---

14. LEGAL PROCEEDINGS AND CONTINGENCIES:

From time to time in the ordinary course of business, the Company becomes involved in lawsuits, or customers and distributors may make claims against the Company. In accordance with ASC 450-10, Contingencies, the Company makes a provision for a liability when it is both probable that a liability has been incurred and the amount of the loss can be reasonably estimated.

On December 18, 2019, CogniPower LLC ("CogniPower") filed a complaint against a customer of the Company in the United States District Court for the District of Delaware for infringement of two patents; the Company thereafter intervened and sought a declaration of non-infringement with respect to use of the Company's products. Following a trial in August 2025, the Company successfully obtained verdicts of noninfringement and invalidity of all asserted claims, and as part of the noninfringement verdict, the jury found that no products incorporating the Company's InnoSwitch products met the specific requirements of CogniPower's asserted claims. The Court thereafter entered judgment in favor of the Company; briefing on post-trial motions is complete, with rulings expected in the coming months. On January 16, 2025, CogniPower filed a follow-on complaint against the same customer asserting the same two patents in the United States District Court for the District of Delaware, but that case was dismissed following the August 2025 verdict in the Company's favor in CogniPower's earlier case. The Company believes the jury verdicts and judgement in its favor are correct and intends to continue to vigorously defend itself against CogniPower's claims against the Company's technology, including on appeal if necessary.

Currently, the Company is not able to estimate a loss or a range of loss for the ongoing litigations disclosed above. Adverse determinations in litigation could result in monetary losses, the loss of proprietary rights, subject the Company to significant liabilities, require the Company to seek licenses from third parties or prevent the Company from licensing the

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technology, any of which could have a material adverse effect on the Company's business, financial condition and operating results.

On May 11, 2022, a former employee of the Company filed a first amended complaint in the Superior Court of California, County of Santa Clara alleging several violations of the Fair Employment and Housing Act. The complaint named the Company and one of its vice presidents and alleged, among other things, that the former employee was discriminated against and harassed based on age and disability, was retaliated against, and was wrongfully terminated in violation of public policy. Two of the plaintiff's claims were dismissed with prejudice in response to the Company's demurrer motions. Prior to trial, the plaintiff dismissed with prejudice the claims against the Company's vice president and the claim of wrongful termination in violation of public policy. In June 2025, the remaining claims in the matter were tried before a jury. The jury reached a verdict and ruled in favor of the Company on the claims of age and disability discrimination and harassment based on age. The jury ruled in favor of the plaintiff and against the Company on the claims of harassment based on disability and retaliation and awarded compensatory damages of $3.2 million and punitive damages of $6.0 million. In the quarter ended June 30, 2025, the Company recognized a charge in the amount of $9.2 million in other operating expenses on the consolidated statements of income.

In the quarter ended September 30, 2025, the Company recognized in other operating expenses on the consolidated statements of income an additional $0.7 million related to plaintiff attorney fees and related costs. The plaintiff had filed claims for attorney fees and other costs totaling $5.9 million; the Company was thus potentially exposed to an additional $5.2 million in expenses related to this matter.

On December 9, 2025, the court issued orders on the parties' motions on attorneys' fees and costs, awarding claims for attorney fees and other costs totaling $2.1 million. As a result, in the quarter ended December 31, 2025, the Company recognized in other operating expenses on the consolidated statements of income an additional $1.4 million to reflect the court determination of plaintiff attorney fees and related costs. The Company disagrees with the jury's verdicts and court's orders against the Company and has appealed the judgement.

The Company is unable to predict the outcome of any further proceedings with certainty, and there can be no assurance that the Company will prevail in the above-mentioned litigations. These litigations, whether or not determined in the Company's favor or settled, will be costly and will divert the efforts and attention of the Company's management and technical personnel from normal business operations, potentially causing a material adverse effect on the business, financial condition and operating results.

15. ACQUISITION:

***Odyssey Semiconductor Technologies***

On March 12, 2024, the Company agreed to acquire the assets of Odyssey, a U.S. company and a developer of vertical GaN transistor technology. The transaction closed on July 1, 2024, at which time all key Odyssey employees joined the Company. Pursuant to the asset purchase agreement, Odyssey sold, transferred and assigned substantially all of its assets to the Company for $9.52 million in cash. The purchase is intended to augment the Company's development of high-power GaN switching technology.

The acquisition has been accounted for using the acquisition method of accounting in accordance with ASC 805 - Business Combinations. Under the acquisition method of accounting, the total purchase consideration of the acquisition is allocated to the tangible assets and identifiable intangible assets acquired based on their relative fair values. The excess of the purchase consideration over the net tangible and identifiable intangible assets is recorded as goodwill, the amount of which represents the expected benefits to the Company of future technology and the knowledgeable and experienced employees who joined the Company. Goodwill is expected to be deductible over 15 years for tax purposes.

The following table summarizes the purchase price and estimated fair values of the assets acquired as of July 1, 2024, the completion of the Odyssey acquisition:

---

| | |
|:---|:---|
| **(In thousands)** | **Total Amount** |
| **Assets Acquired** |  |
| &nbsp;&nbsp;Property and equipment | $1168 |
| &nbsp;&nbsp;In-process research and development | 4930 |
| &nbsp;&nbsp;Goodwill | 3422 |
| &nbsp;&nbsp;&nbsp;&nbsp;Total purchase price | $9520 |

---

[**Table of Contents**](#TOC)

The fair value of in-process research and development was determined based on the cost approach using the Company's estimate of the costs that would be incurred if a market participant were to create the acquired technology from scratch. The Company considered the number of engineers required, salaries and related benefits, allocated overhead and the development time required to recreate the technology. The Company will record the in-process research and development as an intangible asset with an indefinite life until completion or abandonment of the associated research and development efforts, and will begin amortizing the value over the estimated life of the technology upon completion of development. Consistent with the treatment of other intangible assets with indefinite lives, the Company will test the in-process research and development for impairment on an annual basis or when impairment indicators are present.

Pro forma results of operations for this acquisition have not been presented because they are not material to the Company's consolidated financial statements.

16. RETIREMENT PLANS:

The Company sponsors a defined benefit pension plan (Pension Plan) for its Swiss subsidiary in accordance with the legal requirements of Switzerland. The plan assets, which provide benefits in the event of an employee's retirement, death or disability, are held in legally autonomous trustee-administered funds that are subject to Swiss law. Benefits are based on the employee's age, years of service and salary, and the plan is financed by contributions by both the employee and the Company.

The net periodic benefit cost of the Pension Plan was not material to the Company's financial statements during the years ended December 31, 2025, 2024 and 2023. As of December 31, 2025, the projected benefit obligation was $23.2 million, the plan assets were $14.2 million and the net pension liability was $9.0 million. As of December 31, 2024, the projected benefit obligation was $18.3 million, the plan assets were $11.4 million, and the net pension liability was $6.9 million. The Company has recorded the unfunded amount as a liability in its consolidated balance sheet at December 31, 2025 and 2024, under the other liabilities caption. The Company expects to make contributions to the Pension Plan of approximately $0.6 million during 2026. The accumulated unrealized actuarial balance on pension benefits, net of tax, at December 31, 2025, 2024 and 2023 was $0.1 million loss, $1.5 million loss and $1.6 million gain, respectively. These amounts were reflected in Note 3 under the caption accumulated other comprehensive income (loss).

In accordance with the Compensation-Retirement Benefits Topic of ASC 715-20, *Defined Benefits Plan*, the Company recognizes the over-funded or under-funded status of its defined post-retirement plan as an asset or liability in its statement of financial position. The Company measured the plan assets and benefit obligations as of the date of the fiscal year-end.

17. BANK LINE OF CREDIT:

On July 27, 2016, the Company entered into a credit agreement with Wells Fargo Bank, National Association (the "Credit Agreement") that provides the Company with a $75.0 million revolving line of credit to use for general corporate purposes with a $20.0 million sub-limit for the issuance of standby and trade letters of credit. The Credit Agreement was amended on April 30, 2018, to extend the termination date from July 26, 2019, to April 30, 2022, with all other terms remaining the same. The Credit Agreement was amended on June 7, 2021, to provide an alternate borrowing rate as a replacement for LIBOR and extend the termination date from April 30, 2022, to June 7, 2026, with all other terms remaining the same. The Credit Agreement was amended with an effective date of June 28, 2023 to include the Secured Overnight Financing Rates as interest rate benchmark rates, with all other terms remaining the same.

The Company's ability to borrow under the revolving line of credit is conditioned upon the Company's compliance with specified covenants, including reporting and financial covenants, primarily a minimum cash requirement and a debt to earnings ratio. The Credit Agreement terminates on June 7, 2026; all advances under the revolving line of credit will become due on such date, or earlier in the event of a default. The Company was compliant with all covenants and had no advances outstanding under the Credit Agreement as of December 31, 2025.

18. SUBSEQUENT EVENTS:

On January 31, 2026, the Company approved a reduction in force that resulted in the termination of approximately 7% of the Company's global workforce on February 2, 2026 in order to decrease the Company's costs and create a more efficient organization to support its business. In connection with the reduction in force, the Company estimates it will incur approximately between $3.5 million and $4.0 million of costs, substantially all of which are related to employee severance and benefit costs, which the Company expects to recognize in the first quarter of 2026.

[**Table of Contents**](#TOC)

#### Schedule II
*Valuation and Qualifying Accounts*

The Company maintains an allowance for the distributors' ship-and-debit credits relating to the sell-through of the Company's products. This reserve is established using the Company's historical ship-and-debit amounts and levels of inventory in the distributor channels.

The following is a summary of the activity in the allowance for ship-and-debit credits:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **(In thousands)** | **Balance at** <br>**Beginning**<br>**of Period** | <br>**Additions** | <br>**Deductions** <sup>(1)</sup> | <br>**Balance at End** <br>**of Period** |
| **Allowance for ship and debit credits:** |  |  |  |  |
| Year ended December 31, 2023 | $53184 | $202159 | $(219326) | $36017 |
| Year ended December 31, 2024 | $36017 | $211185 | $(220756) | $26446 |
| Year ended December 31, 2025 | $26446 | $223846 | $(216691) | $33601 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(1) Deductions relate to ship-and-debit credits issued which adjust the sales price from the standard distribution price to the pre-approved lower price. Refer to Note 2, *Significant Accounting Policies and Recent Accounting Pronouncements*, for the Company's revenue recognition policy, including the Company's accounting for ship-and-debit claims.

[**Table of Contents**](#TOC)

#### Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure.
Not applicable.

#### Item 9A. Controls and Procedures.

#### Evaluation of Disclosure Controls and Procedures
Management is required to evaluate our disclosure controls and procedures, as defined in Rule 13a-15(e) under the Exchange Act. Disclosure controls and procedures are controls and other procedures designed to provide reasonable assurance that information required to be disclosed in our reports filed under the Exchange Act, such as this Annual Report on Form 10-K, is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. Disclosure controls and procedures include controls and procedures designed to provide reasonable assurance that such information is accumulated and communicated to our management, including our chief executive officer and chief financial officer as appropriate to allow timely decisions regarding required disclosure. Our disclosure controls and procedures include components of our internal control over financial reporting, which consists of control processes designed to provide reasonable assurance regarding the reliability of our financial reporting and the preparation of financial statements in accordance with generally accepted accounting principles in the U.S. To the extent that components of our internal control over financial reporting are included within our disclosure controls and procedures, they are included in the scope of our periodic controls evaluation. Based on our management's evaluation (with the participation of our principal executive officer and principal financial officer), our principal executive officer and principal financial officer have concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) were effective as of the end of the period covered by this Annual Report on Form 10-K.

#### Management's Report on Internal Control Over Financial Reporting
Management is responsible for establishing and maintaining adequate internal control over financial reporting, as defined in Rule 13a-15(f) under the Exchange Act. Internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external reporting purposes in accordance with generally accepted accounting principles. Internal control over financial reporting includes those policies and procedures that:

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

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

● provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on the financial statements.

Internal control over financial reporting cannot provide absolute assurance of achieving financial reporting objectives because of its inherent limitations. Internal control over financial reporting is a process that involves human diligence and compliance and is subject to lapses in judgment and breakdowns resulting from human failures. Because of such limitations, there is a risk that material misstatements may not be prevented or detected on a timely basis by internal control over financial reporting.

Management conducted an assessment of Power Integrations' internal control over financial reporting as of December 31, 2025, based on the framework established by the Committee of Sponsoring Organization ("COSO") of the Treadway Commission in *Internal Control - Integrated Framework* issued in 2013. Based on this assessment, management concluded that, as of December 31, 2025, our internal control over financial reporting was effective.

The effectiveness of Power Integrations' internal control over financial reporting as of December 31, 2025, has been audited by Deloitte & Touche LLP (PCAOB ID No. 34), an independent registered public accounting firm, as stated in their report which appears below.

#### Changes in Internal Control over Financial Reporting
There were no changes in our internal controls over financial reporting during the fourth quarter of 2025, which were identified in connection with management's evaluation required by paragraph (d) of Rules 13a-15 and 15d-15 under the Exchange Act, that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

[**Table of Contents**](#TOC)

#### REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Stockholders and the Board of Directors of Power Integrations, Inc.

#### Opinion on Internal Control over Financial Reporting
We have audited the internal control over financial reporting of Power Integrations, Inc. and subsidiaries (the "Company") as of December 31, 2025, based on criteria established in *Internal Control - Integrated Framework (2013)* issued by the Committee of Sponsoring Organizations of the Treadway Commission ("COSO"). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in *Internal Control - Integrated Framework (2013)* issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) ("PCAOB"), the consolidated financial statements as of and for the year ended December 31, 2025, of the Company and our report dated February 6, 2026, expressed an unqualified opinion on those consolidated financial statements.

#### Basis for Opinion
The Company's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial reporting based on our audit. We are a public accounting firm registered with the 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 audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

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

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

/s/ DELOITTE & TOUCHE LLP

San Jose, California

February 6, 2026

[**Table of Contents**](#TOC)

#### Item 9B. Other Information.
**Rule 10b5-1 Trading Plans** 

During the three months ended December 31, 2025, none of our directors or officers (as defined in Rule 16a-1(f) under the Exchange Act) adopted or terminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or any "non-Rule 10b5-1 trading arrangement" as defined in Item 408(c) of Regulation S-K.

#### Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections.
Not applicable.

[**Table of Contents**](#TOC)

#### PART III

#### Item 10. Directors, Executive Officers and Corporate Governance.
Information required by this item will be contained in our definitive proxy statement to be filed with the SEC on Schedule 14A within 120 days after December 31, 2025, and is incorporated herein by reference.

#### Item 11. Executive Compensation.
Information required by this item will be contained in our definitive proxy statement to be filed with the SEC on Schedule 14A within 120 days after December 31, 2025, and is incorporated herein by reference.

#### Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters.
Information required by this item will be contained in our definitive proxy statement to be filed with the SEC on Schedule 14A within 120 days after December 31, 2025, and is incorporated herein by reference.

#### Item 13. Certain Relationships and Related Transactions, and Director Independence.
Information required by this item will be contained in our definitive proxy statement to be filed with the SEC on Schedule 14A within 120 days after December 31, 2025, and is incorporated herein by reference.

#### Item 14. Principal Accounting Fees and Services.
Information required by this item will be contained in our definitive proxy statement to be filed with the SEC on Schedule 14A within 120 days after December 31, 2025, and is incorporated herein by reference.

[**Table of Contents**](#TOC)

#### PART IV

#### Item 15. Exhibits and Financial Statement Schedules
(a) &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The financial statements required by Item 15(a) are included in Item 8 of this Annual Report on Form 10-K.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. The financial statement schedule required by Item 15(a) (Schedule II, Valuation and Qualifying Accounts) is included in Item 8 of this Annual Report on Form 10-K.

All other schedules are omitted because they are not applicable or the required information is shown in the consolidated financial statements or notes thereto.

(b) Exhibits

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 3.1 | [Amended Restated Certificate of Incorporation](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex3d1.htm) | 10-Q | 000-23441 | 3.1 | 8/6/2025 |
| 3.2 | [Amended and Restated Bylaws](https://www.sec.gov/Archives/edgar/data/833640/000083364026000016/powi-20260127xex3d1.htm) | 8-K | 000-23441 | 3.1 | 1/30/2026 |
| 4.1 | [Description of Power Integrations, Inc. Common Stock](https://www.sec.gov/Archives/edgar/data/833640/000083364020000044/powiex4112-31x2019.htm) | 10-K | 000-23441 | 4.1 | 2/7/2020 |
| 4.2 | Reference is made to Exhibits 3.1 to 3.2 |  |  |  |  |
| 10.1\* | [Form of Indemnity Agreement for directors and officers](https://www.sec.gov/Archives/edgar/data/833640/000083364026000028/powi-20260201xex10d1.htm) | 8-K | 000-23441 | 10.1 | 2/5/2026 |
| 10.2\* | [Power Integrations, Inc. Compliance Policy Regarding IRC Section 409A](https://www.sec.gov/Archives/edgar/data/833640/000095013409004071/f51665exv10w63.htm) | 10-K | 000-23441 | 10.63 | 3/2/2009 |
| 10.3\* | [1997 Employee Stock Purchase Plan, as amended](https://www.sec.gov/Archives/edgar/data/833640/000083364021000143/powi-20210630ex1012e70b3.htm) | 10-Q | 000-23441 | 10.1 | 7/29/2021 |
| 10.4\* | [Forms of agreement under 1997 Employee Stock Purchase Plan](https://www.sec.gov/Archives/edgar/data/833640/0001012870-97-001752.txt) | S-1 | 333-35421 | 10.5 | 9/11/1997 |
| 10.5\* | [1997 Outside Directors Stock Option Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364020000253/powi-ex1022020930q3.htm) | 10-Q | 000-23441 | 10.2 | 10/29/2020 |
| 10.6\* | [Forms of agreement under 1997 Outside Directors Stock Option Plan](https://www.sec.gov/Archives/edgar/data/833640/0001012870-97-001752.txt) | S-1 | 333-35421 | 10.4 | 9/11/1997 |
| 10.7\* | [Form of Director Option Grant Agreement.](https://www.sec.gov/Archives/edgar/data/833640/000119312509101676/dex109.htm) | 10-Q | 000-23441 | 10.9 | 5/6/2009 |
| 10.8\* | [Director Equity Compensation Program](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d3.htm) | 10-Q | 000-23441 | 10.3 | 8/6/2025 |
| 10.9\* | [Forms of Stock Option Agreements to be used in Director Equity Compensation Program](https://www.sec.gov/Archives/edgar/data/833640/000095013408019737/f50165exv10w5.htm) | 10-Q | 000-23441 | 10.5 | 11/7/2008 |
| 10.10\* | [Cash Compensation of Outside Directors](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d2.htm) | 10-Q | 000-23441 | 10.2 | 8/6/2025 |
| 10.11\* | [2007 Equity Incentive Plan, as amended and restated](https://www.sec.gov/Archives/edgar/data/833640/000083364020000253/powi-ex1032020930q3.htm) | 10-Q | 000-23441 | 10.3 | 10/29/2020 |
| 10.12\* | [Forms of Option Agreements under the 2007 Equity Incentive Plan](https://www.sec.gov/Archives/edgar/data/833640/000095013408021595/f50756exv99wxdyx4y.htm) | Schedule TO | 000-23441 | 99.(D)(4) | 12/3/2008 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 10.13\* | [Power Integrations, Inc. Amended and Restated 2016 Incentive Award Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 8/6/2025 |
| 10.14\* | [Form of Restricted Stock Unit Grant Notice and Agreement under the 2016 Incentive Award Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364017000086/powi_ex1025x12-31x2016.htm) | 10-K | 000-23441 | 10.25 | 2/8/2017 |
| 10.15\* | [Form of Performance Stock Unit Notice and Agreement under the 2016 Equity Incentive Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364017000086/powi_ex1026x12-31x2016.htm) | 10-K | 000-23441 | 10.26 | 2/8/2017 |
| 10.16\* | [Form of Long Term Performance Stock Unit Notice and Agreement under the 2016 Equity Incentive Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364022000021/powi-20211231ex1016428ed.htm) | 10-K | 000-23441 | 10.16 | 2/7/2022 |
| 10.17† | [Wafer Supply Agreement between us and ZMD Analog Mixed Signal Services GmbH & Co. KG, dated as of May 23, 2003](https://www.sec.gov/Archives/edgar/data/833640/000083364023000193/powi-20230930xex10d2.htm) | 10-Q | 000-23441 | 10.2 | 11/7/2023 |
| 10.18† | [Amended and Restated Wafer Supply Agreement between us and OKI Electric Industry Co., Ltd., dated as of April 1, 2003](https://www.sec.gov/Archives/edgar/data/833640/000083364023000193/powi-20230930xex10d3.htm) | 10-Q | 000-23441 | 10.3 | 11/7/2023 |
| 10.19† | [Amendment Number One to the Amended and Restated Wafer Supply Agreement between us and OKI Electric Industry Co., Ltd., effective as of August 11, 2004](https://www.sec.gov/Archives/edgar/data/833640/000083364023000193/powi-20230930xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 11/7/2023 |
| 10.20 | [Amendment Number Two to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Electric Industry Co., Ltd., effective as of April 1, 2008](https://www.sec.gov/Archives/edgar/data/833640/000095013408014703/f42538exv10w5.htm) | 10-Q | 000-23441 | 10.5 | 8/8/2008 |
| 10.21 | [Amendment Number Three to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Electric Industry Co., Ltd., effective as of June 9, 2008](https://www.sec.gov/Archives/edgar/data/833640/000095013408014703/f42538exv10w6.htm) | 10-Q | 000-23441 | 10.6 | 8/8/2008 |
| 10.22† | [Amendment Number Four to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Electric Industry Co., Ltd., dated September 15, 2008](https://www.sec.gov/Archives/edgar/data/833640/000095013408019737/f50165exv10w2.htm) | 10-Q | 000-23441 | 10.2 | 11/7/2008 |
| 10.23† | [Amendment Number Five to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Semiconductor Co., Ltd., effective as of November 14, 2008](https://www.sec.gov/Archives/edgar/data/833640/000095013409004071/f51665exv10w61.htm) | 10-K | 000-23441 | 10.61 | 3/2/2009 |
| 10.24† | [Amendment Number Six to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Semiconductor Co., Ltd., effective as of November 1, 2015](https://www.sec.gov/Archives/edgar/data/833640/000083364016000276/powi_ex1032x12-31x2015.htm) | 10-K | 000-23441 | 10.32 | 2/11/2016 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 10.25† | [Amendment Number Seven to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Semiconductor Co., Ltd., effective as of August 8, 2016](https://www.sec.gov/Archives/edgar/data/833640/000083364016000407/powi-ex101_2016930q3.htm) | 10-Q | 000-23441 | 10.1 | 11/1/2016 |
| 10.26† | [Amendment Number Eight to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and OKI Semiconductor Co., Ltd., effective as of July 26, 2017](https://www.sec.gov/Archives/edgar/data/833640/000083364022000118/powi-20220630xex10d3.htm) | 10-Q | 000-23441 | 10.3 | 8/4/2022 |
| 10.27†† | [Amendment Number Nine to the Amended and Restated Wafer Supply Agreement, between Power Integrations International, Ltd. and Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of February 6, 2019](https://www.sec.gov/Archives/edgar/data/833640/000083364019000104/powi-ex102_2019331q1.htm) | 10-Q | 000-23441 | 10.2 | 4/25/2019 |
| 10.28† | [Wafer Supply Agreement, between Seiko Epson Corporation and Power Integrations International, Ltd. effective as of April 1, 2005](https://www.sec.gov/Archives/edgar/data/833640/000095013408019737/f50165exv10w1.htm) | 10-Q | 000-23441 | 10.1 | 11/7/2008 |
| 10.29† | [Amendment Number One to the Wafer Supply Agreement between Power Integrations International, Ltd. and Seiko Epson Corporation, with an effective date of December 19, 2008](https://www.sec.gov/Archives/edgar/data/833640/000119312509101676/dex101.htm) | 10-Q | 000-23441 | 10.1 | 5/6/2009 |
| 10.30† | [Amendment Number Two to Wafer Supply Agreement, between Seiko Epson Corporation and Power Integrations International, Ltd., entered into on January 5, 2011](https://www.sec.gov/Archives/edgar/data/833640/000119312511045774/dex1047.htm) | 10-K | 000-23441 | 10.47 | 2/25/2011 |
| 10.31† | [Amendment Number Three to Wafer Supply Agreement, effective as of February 1, 2012, by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364021000025/powi-20201231ex1035b84a9.htm) | 10-K | 000-23441 | 10.35 | 2/5/2021 |
| 10.32† | [Development Addendum to Wafer Supply Agreement, dated September 22, 2013, between Seiko Epson Corporation and Power Integrations International Ltd](https://www.sec.gov/Archives/edgar/data/833640/000083364021000025/powi-20201231ex10361b023.htm) | 10-K | 000-23441 | 10.36 | 2/5/2021 |
| 10.33† | [Amendment Number Four to Wafer Supply Agreement, effective as of April 1, 2015, by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364021000025/powi-20201231ex10370ab3b.htm) | 10-K | 000-23441 | 10.37 | 2/5/2021 |
| 10.34† | [Amendment Number Five to Wafer Supply Agreement, effective as of November 2, 2015, by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364021000025/powi-20201231ex1038960cf.htm) | 10-K | 000-23441 | 10.38 | 2/5/2021 |
| 10.35† | [Amendment Number Six to Wafer Supply Agreement, effective as of December 8, 2015, by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364021000025/powi-20201231ex1039b0a72.htm) | 10-K | 000-23441 | 10.39 | 2/5/2021 |

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| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 10.36† | [Amendment Number Seven to Wafer Supply Agreement, effective as of October 3, 2016, by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364017000086/powi_ex1046x12-31x2016.htm) | 10-K | 000-23441 | 10.46 | 2/8/2017 |
| 10.37† | [Amendment Number Eight to Wafer Supply Agreement, effective as of November 8, 2016 by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364017000086/powi_ex1047x12-31x2016.htm) | 10-K | 000-23441 | 10.47 | 2/8/2017 |
| 10.38† | [Amendment Number One to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and XFAB Dresden GmbH & Co. KG, effective as of July 20, 2005](https://www.sec.gov/Archives/edgar/data/833640/000083364023000193/powi-20230930xex10d4.htm) | 10-Q | 000-23441 | 10.4 | 11/7/2023 |
| 10.39† | [Wafer Supply Agreement, made and entered into as of October 1, 2010, by and between Power Integrations International, Ltd., and X-FAB Semiconductor Foundries AG](https://www.sec.gov/Archives/edgar/data/833640/000083364012000080/powi-ex102_xxfabwafersuppl.htm) | 10-Q | 000-23441 | 10.2 | 5/8/2012 |
| 10.40† | [Amendment Number One to Wafer Supply Agreement, effective as of January 1, 2014, between Power Integrations International, Ltd., and X-FAB Semiconductor Foundries AG](https://www.sec.gov/Archives/edgar/data/833640/000083364014000200/powi-ex102_2014331q1a.htm) | 10-Q/A | 000-23441 | 10.2 | 9/19/2014 |
| 10.41† | [Amendment Number Two to the Wafer Supply Agreement, effective as of December 1, 2018, between Power Integrations International, Ltd., and X-FAB Semiconductor Foundries GmbH (formerly X-FAB Semiconductor Foundries AG)](https://www.sec.gov/Archives/edgar/data/833640/000083364019000046/powi_ex1052x12-31x2018.htm) | 10-K | 000-23441 | 10.52 | 2/13/2019 |
| 10.42 | [Amendment Number Three to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. And X-FAB Semiconductor Foundries AG, effective as of April 21, 2021](https://www.sec.gov/Archives/edgar/data/833640/000083364021000143/powi-20210630ex10483a617.htm) | 10-Q | 000-23441 | 10.4 | 7/29/2021 |
| 10.43 | [Credit Agreement, dated July 27, 2016, by and between Power Integrations Inc. and Wells Fargo Bank, National Association](https://www.sec.gov/Archives/edgar/data/833640/000083364016000351/powi-ex101_2016630q2.htm) | 10-Q | 000-23441 | 10.1 | 7/29/2016 |
| 10.44 | [First Amendment to Credit Agreement, dated April 30, 2018 by and between Power Integrations, Inc. and Wells Fargo Bank, National Association](https://www.sec.gov/Archives/edgar/data/833640/000083364018000197/powi-ex101_2018630q2.htm) | 10-Q | 000-23441 | 10.1 | 7/26/2018 |
| 10.45 | [Second Amendment to Credit Agreement, dated June 7, 2021 by and between Power Integrations, Inc. and Wells Fargo Bank, National Association](https://www.sec.gov/Archives/edgar/data/833640/000083364021000143/powi-20210630ex103fac09a.htm)  | 10-Q | 000-23441 | 10.3 | 7/29/2021 |
| 10.46\* | [2019 Executive Officer Compensation Arrangements and 2019 Performance Based Incentive Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364019000046/powi-2018123110k.htm) | 10-K | 000-23441 | Item 9B | 2/13/2019 |

---

[**Table of Contents**](#TOC)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 10.47\* | [2018 Executive Officer Cash Compensation Arrangements and 2018 Performance Based Incentive Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364018000067/powi-2017123110k.htm) | 10-K | 000-23441 | Item 9B | 2/14/2018 |
| 10.48\* | [Form of Restricted Stock Unit Grant Notice and Form of Restricted Stock Unit Award Agreement for executive officers for use prior to January 2013](https://www.sec.gov/Archives/edgar/data/833640/000119312510181087/dex106.htm) | 10-Q | 000-23441 | 10.6 | 8/6/2010 |
| 10.49\* | [Form of Restricted Stock Unit Grant Notice and Form of Restricted Stock Unit Award Agreement for executive officers for use after January 2013](https://www.sec.gov/Archives/edgar/data/833640/000083364013000061/powi-ex1048_20121231x10k.htm) | 10-K | 000-23441 | 10.48 | 2/22/2013 |
| 10.50\* | [Amended and Restated Chief Executive Officer Benefits Agreement, dated as of May 1, 2014, between Power Integrations, Inc. and Balu Balakrishnan](https://www.sec.gov/Archives/edgar/data/833640/000083364014000110/powi-ex103_2014331.htm) | 10-Q | 000-23441 | 10.3 | 5/5/2014 |
| 10.51\* | [Amended and Restated Executive Officer Benefits Agreement, dated as of May 1, 2014, between Power Integrations, Inc. and Cliff Walker](https://www.sec.gov/Archives/edgar/data/833640/000083364014000110/powi-ex105_2014331.htm) | 10-Q | 000-23441 | 10.5 | 5/5/2014 |
| 10.52\* | [Amended and Restated Executive Officer Benefits Agreement, dated as of May 1, 2014, between Power Integrations, Inc. and Sandeep Nayyar](https://www.sec.gov/Archives/edgar/data/833640/000083364014000110/powi-ex108_2014331.htm) | 10-Q | 000-23441 | 10.8 | 5/5/2014 |
| 10.53\* | [Amended and Restated Executive Officer Benefits Agreement, dated as of May 1, 2014, between Power Integrations, Inc. and Radu Barsan](https://www.sec.gov/Archives/edgar/data/833640/000083364014000110/powi-ex1011_2014331.htm) | 10-Q | 000-23441 | 10.11 | 5/5/2014 |
| 10.54†† | [ON Semiconductor Corporation Settlement Agreement](https://www.sec.gov/Archives/edgar/data/833640/000083364020000044/powiex106112-31x2019.htm) | 10-K | 000-23441 | 10.61 | 2/7/2020 |
| 10.55†† | [ON Semiconductor Corporation Term Sheet](https://www.sec.gov/Archives/edgar/data/833640/000083364020000044/powiex106212-31x2019.htm) | 10-K | 000-23441 | 10.62 | 2/7/2020 |
| 10.56† | [Amendment Number Ten to the Amended and Restated Wafer Supply Agreement, between Power Integrations International, Ltd. and Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of December 16, 2019](https://www.sec.gov/Archives/edgar/data/833640/000083364020000149/powi-ex1012020331q1.htm) | 10-Q | 000-23441 | 10.1 | 5/7/2020 |
| 10.57† | [Amendment Number Eleven to the Amended and Restated Wafer Supply Agreement, between Power Integrations International, Ltd. and Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of December 20, 2019](https://www.sec.gov/Archives/edgar/data/833640/000083364020000149/powi-ex1022020331q1.htm) | 10-Q | 000-23441 | 10.2 | 5/7/2020 |

---

[**Table of Contents**](#TOC)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 10.58††† | [Amendment Number Twelve to the Amended and Restated Wafer Supply Agreement, between Power Integrations International, Ltd. and Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of September 17, 2020](https://www.sec.gov/Archives/edgar/data/833640/000083364021000110/powi-20210331ex102e8e1b0.htm) | 10-Q | 000-23441 | 10.2 | 4/29/2021 |
| 10.59††† | [Amendment Number Thirteen to the Amended and Restated Wafer Supply Agreement between Power Integrations, Ltd. d.b.a. Power Integrations International, Ltd. And Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of February 17, 2022](https://www.sec.gov/Archives/edgar/data/833640/000083364022000083/powi-20220331ex101a2a963.htm) | 10-Q | 000-23441 | 10.1 | 4/28/2022 |
| 10.60† | [Amendment Number Nine to Wafer Supply Agreement, effective as of November 1, 2017 by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364020000149/powi-ex1032020331q1.htm) | 10-Q | 000-23441 | 10.3 | 5/7/2020 |
| 10.61\* | [2020 Compensation Arrangements with Named Executive Officers](https://www.sec.gov/Archives/edgar/data/833640/000083364020000044/powi-2019123110k.htm) | 10-K | 000-23441 | Item 9B | 2/7/2020 |
| 10.62\* | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of June 1, 2020, between Power Integrations, Inc. and Balu Balakrishnan](https://www.sec.gov/Archives/edgar/data/833640/000083364020000241/powi-ex1022020630.htm) | 10-Q | 000-23441 | 10.2 | 7/30/2020 |
| 10.63\* | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of June 1, 2020, between Power Integrations, Inc. and Radu Barsan](https://www.sec.gov/Archives/edgar/data/833640/000083364020000241/powi-ex1042020630.htm) | 10-Q | 000-23441 | 10.4 | 7/30/2020 |
| 10.64\* | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of June 1, 2020, between Power Integrations, Inc. and Sandeep Nayyar](https://www.sec.gov/Archives/edgar/data/833640/000083364020000241/powi-ex1072020630.htm) | 10-Q | 000-23441 | 10.7 | 7/30/2020 |
| 10.65\* | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of June 1, 2020, between Power Integrations, Inc. and Clifford Walker](https://www.sec.gov/Archives/edgar/data/833640/000083364020000241/powi-ex1092020630.htm) | 10-Q | 000-23441 | 10.9 | 7/30/2020 |
| 10.66\* | [Executive Officer Benefits Agreement, dated as of February 1, 2021, between Power Integrations, Inc. and Sunil Gupta](https://www.sec.gov/Archives/edgar/data/833640/000083364021000025/powi-20201231ex10735942a.htm) | 10-K | 000-23441 | 10.73 | 2/5/2021 |
| 10.67\* | [Executive Officer Benefits Agreement, dated as of August 1, 2022, between Power Integrations, Inc. and Sunil Gupta](https://www.sec.gov/Archives/edgar/data/833640/000083364022000118/powi-20220630xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 8/4/2022 |
| 10.68 | [Amendment Number Ten to Wafer Supply Agreement, effective as of August 26, 2020 by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364020000253/powi-ex1052020930q3.htm) | 10-Q | 000-23441 | 10.5 | 10/29/2020 |

---

[**Table of Contents**](#TOC)

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> |
| 10.69††† | [Amendment Number Eleven to Wafer Supply Agreement, effective as of September 16, 2022 by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364023000125/powi-20230331xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 5/4/2023 |
| 10.70 | [Third Amendment to Credit Agreement, dated June 28, 2023 between Power Integrations, Inc. and Wells Fargo Bank, National Association](https://www.sec.gov/Archives/edgar/data/833640/000083364023000169/powi-20230630xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 8/3/2023 |
| 10.71††† | [Amendment Number Five to the Amended and Restated Wafer Supply Agreement between Power Integrations International, Ltd. and X-FAB Dresden GmbH & Co. KG, dated December 23, 2009.](https://www.sec.gov/Archives/edgar/data/833640/000083364023000193/powi-20230930xex10d5.htm) | 10-Q | 000-23441 | 10.5 | 11/7/2023 |
| 10.72††† | [Amendment Number Twelve to Wafer Supply Agreement, effective as of February 26, 2024 by Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364024000107/powi-20240331xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 5/7/2024 |
| 10.73 | [Amendment to the Amended and Restated Chief Executive Officer Benefits Agreement, dated as of January 28, 2025, between Power Integrations, Inc. and Balu Balakrishnan](https://www.sec.gov/Archives/edgar/data/0000833640/000083364025000120/powi-20250331xex10d1.htm) | 10-Q | 000-23441 | 10.1 | 5/12/2025 |
| 10.74 | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of January 28, 2025, between Power Integrations, Inc. and Sandeep Nayyar](https://www.sec.gov/Archives/edgar/data/833640/000083364025000120/powi-20250331xex10d2.htm) | 10-Q | 000-23441 | 10.2 | 5/12/2025 |
| 10.75 | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of January 28, 2025, between Power Integrations, Inc. and Radu Barsan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000120/powi-20250331xex10d4.htm) | 10-Q | 000-23441 | 10.4 | 5/12/2025 |
| 10.76 | [Amendment to the Executive Officer Benefits Agreement, dated as of January 28, 2025, between Power Integrations, Inc. and Sunil Gupta](https://www.sec.gov/Archives/edgar/data/833640/000083364025000120/powi-20250331xex10d5.htm) | 10-Q | 000-23441 | 10.5 | 5/12/2025 |
| 10.77 | [Amendment to the Amended and Restated Executive Officer Benefits Agreement, dated as of January 28, 2025, between Power Integrations, Inc. and Clifford Walker](https://www.sec.gov/Archives/edgar/data/833640/000083364025000120/powi-20250331xex10d6.htm) | 10-Q | 000-23441 | 10.6 | 5/12/2025 |
| 10.78††† | [Amendment Number Fourteen to the Amended and Restated Wafer Supply Agreement between Power Integrations Ltd. d.b.a. Power Integrations International, Ltd. And Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of September 16, 2024](https://www.sec.gov/Archives/edgar/data/833640/000083364025000120/powi-20250331xex10d9.htm) | 10-Q | 000-23441 | 10.9 | 5/12/2025 |

---

[**Table of Contents**](#TOC)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> | **Filed**<br>**Herewith**<br><BORDER_TOP> |
| 10.79††† | [Amendment Number Thirteen to Wafer Supply Agreement, between Power Integrations International Ltd. and Seiko Epson Corporation](https://www.sec.gov/Archives/edgar/data/833640/000083364025000120/powi-20250331xex10d10.htm) | 10-Q | 000-23441 | 10.10 | 5/12/2025 |  |
| 10.80††† | [Amendment Number Fifteen to the Amended and Restated Wafer Supply Agreement between Power Integrations Ltd. d.b.a. Power Integrations International, Ltd. And Lapis Semiconductor Co., Ltd. (formerly OKI Semiconductor Co., Ltd.), effective as of June 23, 2025](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d4.htm) | 10-Q | 000-23441 | 10.4 | 8/6/2025 |  |
| 10.81\* | [Employment Agreement, dated as of July 11, 2025, between Power Integrations, Inc. and Jennifer A. Lloyd, PhD](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d5.htm) | 10-Q | 000-23441 | 10.5 | 8/6/2025 |  |
| 10.82\* | [Chief Executive Officer Benefits Agreement, dated as of July 21, 2025, between Power Integrations, Inc. and Jennifer A. Lloyd, PhD](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d6.htm) | 10-Q | 000-23441 | 10.6 | 8/6/2025 |  |
| 10.83\* | [Transition Agreement, dated as of July 11, 2025, between Power Integrations, Inc. and Balu Balakrishnan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d7.htm) | 10-Q | 000-23441 | 10.7 | 8/6/2025 |  |
| 10.84\* | [Consulting Agreement, dated as of July 11, 2025, between Power Integrations, Inc. and Balu Balakrishnan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000157/powi-20250630xex10d8.htm) | 10-Q | 000-23441 | 10.8 | 8/6/2025 |  |
| 10.85\* | [Employment Agreement, dated as of November 14, 2025, between Power Integrations, Inc. and Nancy Erba](powi-20251231xex10d85.htm) |  |  |  |  | X |
| 10.86\* | [Executive Officer Benefits Agreement, dated as of November 15, 2025, between Power Integrations, Inc. and Nancy Erba](powi-20251231xex10d86.htm) |  |  |  |  | X |
| 10.87\* | [Amended and Restated 2025 Inducement Award Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364026000016/powi-20260127xex10d1.htm) | 8-K | 000-23441 | 10.1 | 1/30/2026 |  |
| 10.88\* | [Form of Restricted Stock Unit Grant Notice and Agreement under the 2025 Inducement Award Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000203/powi-20251125xex4d2.htm) | S-8 | 333-291784 | 4.2 | 11/25/2025 |  |
| 10.89\* | [Form of Performance Stock Unit Grant Notice and Agreement under the 2025 Inducement Award Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000203/powi-20251125xex4d3.htm) | S-8 | 333-291784 | 4.3 | 11/25/2025 |  |
| 10.90\* | [Form of Long Term Performance Stock Unit Grant Notice and Agreement under the 2025 Inducement Award Plan](https://www.sec.gov/Archives/edgar/data/833640/000083364025000203/powi-20251125xex4d4.htm) | S-8 | 333-291784 | 4.4 | 11/25/2025 |  |

---

[**Table of Contents**](#TOC)

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **ExhibitNumber** | **Exhibit Description** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** | **Incorporation by Reference** |
| **ExhibitNumber** | **Exhibit Description** | **Form**<br><BORDER_TOP> | **FileNumber**<br><BORDER_TOP> | **Exhibit/AppendixReference**<br><BORDER_TOP> | **Filing Date**<br><BORDER_TOP> | **Filed**<br>**Herewith**<br><BORDER_TOP> |
| 19.1 | [Insider Trading Policy](https://www.sec.gov/Archives/edgar/data/833640/000083364025000043/powi-20241231xex19d1.htm) | 10-K | 000-23441 | 19.1 | 2/7/2025 |  |
| 21.1 | [List of subsidiaries](https://www.sec.gov/Archives/edgar/data/833640/000083364022000021/powi-20211231ex211833c4e.htm) | 10-K | 000-23441 | 21.1 | 2/7/2022 |  |
| 23.1 | [Consent of Independent Registered Public Accounting Firm](powi-20251231xex23d1.htm) |  |  |  |  | X |
| 24.1 | Power of Attorney (see signature page) |  |  |  |  | X |
| 31.1 | [Certification of Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002](powi-20251231xex31d1.htm) |  |  |  |  | X |
| 31.2 | [Certification of Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002](powi-20251231xex31d2.htm) |  |  |  |  | X |
| 32.1\*\* | [Certification of Chief Executive Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002](powi-20251231xex32d1.htm) |  |  |  |  | X |
| 32.2\*\* | [Certification of Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002](powi-20251231xex32d2.htm) |  |  |  |  | X |
| 97\* | [Incentive Compensation Recoupment Policy](https://www.sec.gov/Archives/edgar/data/833640/000083364024000030/powi-20231231xex97.htm) | 10-K | 000-23441 | 97 | 2/12/2024 |  |
| 101.INS | XBRL Instance Document |  |  |  |  | X |
| 101.SCH | XBRL Taxonomy Extension Schema Document |  |  |  |  | X |
| 101.CAL | XBRL Taxonomy Extension Calculation Linkbase Document |  |  |  |  | X |
| 101.DEF | XBRL Taxonomy Extension Definition Linkbase Document |  |  |  |  | X |
| 101.LAB | XBRL Taxonomy Extension Label Linkbase Document |  |  |  |  | X |
| 101.PRE | XBRL Taxonomy Extension Presentation Linkbase Document |  |  |  |  | X |
| 104 | The cover page from this Annual Report on Form 10-K, formatted in Inline XBRL |  |  |  |  | X |

---

All references in the table above to previously filed documents or descriptions are incorporating those documents and descriptions by reference thereto.

&nbsp;&nbsp;&nbsp;&nbsp;† This Exhibit has been filed separately with the Commission pursuant to an application for confidential treatment. The confidential portions of this Exhibit have been omitted and are marked by an asterisk.

†† Portions of this exhibit have been omitted as being immaterial and would be competitively harmful if disclosed.

††† Portions of this exhibit have been omitted as being immaterial and is the type of information that Power Integrations, Inc. treats as private or confidential.

[**Table of Contents**](#TOC)

\* Indicates a management contract or compensatory plan or arrangement.

\*\* The certifications attached as Exhibits 32.1 and 32.2 accompanying this Form 10-K, are not deemed filed with the SEC, and are not to be incorporated by reference into any filing of Power Integrations, 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.

#### Item 16. Form 10-K Summary
None.

[**Table of Contents**](#TOC)

#### SIGNATURES
Pursuant to the requirements 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.

---

| | | | |
|:---|:---|:---|:---|
|  |  | POWER INTEGRATIONS, INC. | POWER INTEGRATIONS, INC. |
| Dated: | February 6, 2026 | By: | /s/ NANCY ERBA |
|  |  |  | Nancy Erba <br>Chief Financial Officer (Duly Authorized Principal Financial Officer and Principal Accounting Officer) |

---

[**Table of Contents**](#TOC)

d

#### POWER OF ATTORNEY
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Jennifer Lloyd and Nancy Erba his or her true and lawful attorney-in-fact and agent, with full power of substitution and, for him or her and in his or her name, place and stead, in any and all capacities to sign any and all amendments to this Report on Form 10-K, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorney-in-fact and agent, or his or her substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

PURSUANT TO THE REQUIREMENTS OF THE SECURITIES EXCHANGE ACT OF 1934, THIS REPORT HAS BEEN SIGNED BY THE FOLLOWING PERSONS ON BEHALF OF THE REGISTRANT AND IN THE CAPACITIES INDICATED AS OF THE SIXTH DAY OF FEBRUARY 2026.

---

| | |
|:---|:---|
| By: | /s/ JENNIFER LLOYD |
|  | Jennifer Lloyd |
|  | President, Chief Executive Officer |
|  | (Principal Executive Officer) |
| By: | /s/ NANCY ERBA |
|  | NANCY ERBA |
|  | Chief Financial Officer |
|  | (Principal Financial and Principal Accounting Officer) |
| By: | /s/ BALAKRISHNAN S. IYER |
|  | Balakrishnan S. Iyer |
|  | Director and Chairman of the Board |
| By: | /s/ WENDY ARIENZO |
|  | Wendy Arienzo |
|  | Director |
| By: | /s/ BALU BALAKRISHNAN |
|  | Balu Balakrishnan |
|  | Director |
| By: | /s/ NICHOLAS E. BRATHWAITE |
|  | Nicholas E. Brathwaite |
|  | Director |
| By: | /s/ ANITA GANTI |
|  | Anita Ganti |
|  | Director |
| By: | /s/ NANCY GIOIA |
|  | Nancy Gioia |
|  | Director |
| By: | /s/ GREGG LOWE |
|  | Gregg Lowe |
|  | Director |
| By: | /s/ RAVI VIG |
|  | Ravi Vig |
|  | Director |

---

## Exhibit 10.85

**Exhibit 10.85**

Power Integrations

5245 Hellyer Avenue

San Jose, CA 95138 USA

+1 408 414 9200

www.power.com

October 30, 2025

Nancy Erba

Re: Employment Terms

Dear Nancy:

Power Integrations, Inc. (the "Company") is pleased to offer you the position of Chief Financial Officer, Principal Financial Officer and Principal Accounting Officer subject to the terms described below.

You will report to me, Jennifer Lloyd, CEO, and work at our facility at 5245 Hellyer Ave., San Jose, CA

Your annual compensation will be $500,000 (five hundred thousand dollars), less payroll deductions and all required withholdings. Your salary will be paid at the bi-weekly rate of $19,230.77 (nineteen thousand two hundred thirty dollars and 77/100) every other Friday, less applicable deductions, and all required withholdings. The Company may change compensation and benefits from time to time, in its discretion.

Pursuant to the Company's 2016 Incentive Award Plan or the 2025 Equity Award Inducement Plan (the "Plan") and subject to the approval of our Board of Directors or its compensation committee, the Company shall grant you, on the first trading day of the month following your start date as an employee:

You will be eligible for an Annual Performance Bonus (PSUs), with a target value of 85% of your base salary. Your target PSUs for the year in which your start date occurs will be calculated at a full year value of $425,000 prorated based on the percentage of your full-time service during the plan year from January 1<sup>st</sup> of the applicable year through December 31<sup>st</sup> of the same year. The number of shares granted will be calculated based on the closing price on the first trading day of the month following your start date as an employee. The PSUs for the period ending December 31<sup>st</sup> of the year of your start date would typically be settled in the first quarter of the subsequent calendar year to participating employees actively employed through the end of the plan year. If

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the Company's target objectives are met for the applicable year, and you remain employed through December 31<sup>st</sup> of that year, you would receive a bonus pay-out equal to 100% of your prorated target PSUs. Depending on the Company's performance relative to our goals, the pay-out could be more or less than your prorated target PSUs (from zero up to 200% of the prorated target PSUs). There is a tax withholding requirement at the time your PSUs are settled.

Restricted stock units (RSUs) in the value of $3,000,000; number of shares to be calculated based on the closing price on the first trading day of the month following your start date as an employee. The RSUs will be subject to the terms and conditions of the Plan and your grant agreement. Your RSUs will vest over four years from your start date, with 25% vesting at the end of one year of employment. Thereafter, your RSUs will vest yearly in equal amounts over the remaining three years, until either the RSUs are fully vested or your employment ends, whichever occurs first. There is a tax withholding requirement at the time your RSUs are settled.

Performance restricted stock units (PRSUs) in the value of $2,000,000 (target PRSUs); number of shares to be calculated based on the closing price on the first trading day of the month following your start date as an employee. The PRSUs will be subject to the terms and conditions of the Plan and your grant agreement. Your PRSUs for a specified performance period typically will be settled in the first quarter of the calendar year following the end of the performance period, with the amount settled based on satisfaction of performance conditions and your full-time service during the period starting from your start date through the end of the performance period. The actual number of PRSUs that will vest can vary from 0 to 200% of the target PRSU shares. There is a tax withholding requirement at the time your PRSUs are settled.

The Company will sell a portion of the RSUs, PSUs and PRSUs at settlement to cover your applicable withholding taxes.

The above summary is not legal description of the RSU, PSU and PRSU plans. The plan documents will determine the terms and conditions of the plan and will supersede the above summary.

Continued participation in RSU, PSU and PRSU programs and the number of shares awarded for future years is discretionary and can vary based on performance. Eligibility for participation in this program will be evaluated each year and there is no guarantee that an employee will be eligible to participate every year.

As a full-time employee, you will be eligible for standard Company benefits. Details about these benefits are provided in the Employee Handbook and Summary Plan Descriptions and are available for your review.

As a Company employee, you will be expected to abide by Company policies and procedures, acknowledge in writing that you have read and will comply with the Company's Employee Handbook, Insider Trading Policy, and Code of Business Conduct and Ethics, and execute customary employment materials such as the Company's standard form of Employee Confidential Information and Inventions Assignment Agreement.

------

In your work for the Company, you will be expected not to use or disclose any confidential information, including trade secrets, of any former employer or other person to whom you have an obligation of confidentiality. Rather, you will be expected to use only that information which is generally known and used by persons with training and experience comparable to your own, which is common knowledge in the industry or otherwise legally in the public domain, or which is otherwise provided or developed by the Company. You agree that you will not bring onto Company premises or use in your work for the Company any unpublished documents or property belonging to any former employer or third party that you are not authorized to use and disclose. You represent further that you have disclosed to the Company any contract you have signed that may restrict your activities on behalf of the Company. By accepting employment with the Company, you are representing that you will be able to perform your job duties within these guidelines.

Your employment relationship is at will. You may terminate your employment with the Company at any time and for any reason whatsoever simply by notifying the Company. Likewise, the Company may terminate your employment at any time, with or without cause or advance notice. Your employment at-will status can only be modified in a written agreement signed by you and by an authorized officer of the Company. Notwithstanding the foregoing, upon a termination of employment you will be entitled to severance benefits pursuant to the terms and conditions of the Senior Executive Officer Benefits Agreement (the "EOBA"), a copy of which is enclosed for your review and execution. As required by law, this offer is subject to satisfactory proof of your right to work in the United States and acceptable background check.

The terms in this letter supersede any other agreements or promises made to you by anyone, whether oral or written. This letter agreement cannot be changed except in a written agreement signed by you and a duly authorized officer of the Company.

Please sign and date this letter and the attached EOBA and return them to Human Resources by November 13, 2025, if you wish to accept employment at the Company under the terms described above.

[signature page follows]

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Nancy, we look forward to your favorable reply and to a productive and enjoyable work relationship.

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;Sincerely, | &nbsp;&nbsp;Sincerely, | &nbsp;&nbsp;ACCEPTED: | &nbsp;&nbsp;ACCEPTED: |
| &nbsp;&nbsp;/s/ Jennifer Lloyd | &nbsp;&nbsp;/s/ Jennifer Lloyd | &nbsp;&nbsp;/s/ Nancy Erba | &nbsp;&nbsp;/s/ Nancy Erba |
| &nbsp;&nbsp;Jennifer Lloyd, CEO | &nbsp;&nbsp;Jennifer Lloyd, CEO | &nbsp;&nbsp;Nancy Erba | &nbsp;&nbsp;Nancy Erba |
| &nbsp;&nbsp;Date: | &nbsp;&nbsp;11/13/2025 | &nbsp;&nbsp;Date: | &nbsp;&nbsp;11/14/2025 |
|  |  | &nbsp;&nbsp;START DATE: | &nbsp;&nbsp;START DATE: |
|  |  | &nbsp;&nbsp;January 5, 2026 | &nbsp;&nbsp;January 5, 2026 |

---

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## Exhibit 10.86

**Exhibit 10.86**

**POWER INTEGRATIONS, INC.**

**SENIOR EXECUTIVE OFFICER BENEFITS AGREEMENT**

**This Senior Executive Officer Benefits Agreement** (the ***"Agreement"***) is made by and between **Power Integrations, Inc.**, a Delaware corporation, (the "***Company***") and Nancy Erba ("***Executive***").

**Recitals**

A.Executive is an executive of the Company and possesses valuable knowledge of the Company, its business and operations, and the markets in which the Company competes.

B.The Company draws upon the knowledge, experience and advice of Executive in order to manage its business for the benefit of the Company's stockholders.

C.The Board of Directors desires to supplement Executive's other employment arrangements so as to provide additional compensation and benefits to the Executive to encourage Executive to continue to devote Executive's attention and dedication to the Company and to create additional incentives to continued employment with the Company.

**Agreement**

**Therefore,** in consideration of the mutual agreements, covenants and considerations contained herein, the undersigned hereby agree and acknowledge as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1.**Executive shall be eligible for the benefits under this Agreement as set forth in Exhibit A hereto only if (i) Executive has executed this Agreement and (ii) Executive has commenced service as a Company employee (the occurrence of both events, the "***Effective Date***").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2.**This Agreement may only be modified or amended by a supplemental written agreement signed by Executive and a duly authorized member of the Board of Directors of the Company.

\* \* \* \* \*

1. ------

**In Witness Whereof,** the undersigned have executed this **Senior Executive Officer Benefits Agreement,** intending to be legally bound as of the Effective Date.

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| | |
|:---|:---|
| &nbsp;&nbsp;**COMPANY:**<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Power Integrations, Inc.**<br>By: <u>/s/ Jennifer Lloyd</u> <br>Name: Jennifer Lloyd<br>Title: CEO <br>Date: 11/13/2025 |
| &nbsp;&nbsp;**EXECUTIVE:**<br>| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<u>/s/ Nancy Erba</u> <br>Name: Nancy Erba<br>Title: Chief Financial Officer, PFO & PAO<br>Date: 11/14/2025 <br>|

---

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**Exhibit A**

**TERMS OF SENIOR EXECUTIVE OFFICER BENEFITS AGREEMENT**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**1.**Executive shall continue to be an at-will employee of the Company employed in Executive's current position at Executive's then current salary rate, and shall be entitled to continue to participate in and to receive benefits on the same basis as other employees under any of the Company's general employee benefit plans as in effect from time to time. Payments to Executive under this Agreement are additional benefits separate from those statutorily provided to employees upon termination of employment.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**2.Qualifying Termination Upon Change of Control**. In the event of the Executive's Qualifying Termination Upon Change of Control, Executive shall be entitled to the following separation benefits in this Section 2:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)Annual Performance Bonus.** A cash payment equal to the value of a Prorated Portion of the target (i.e., 100%) performance level of Executive's Annual Performance Bonus measured as of the date of termination for the year in which such termination occurs, to be paid in a lump sum on the 60<sup>th</sup> day following such termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)Severance Payment.**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**Payment of an amount equal to one year of Executive's annual base salary from the Company as in effect as of the date of such termination (or, in the event that the applicable Qualifying Termination Upon Change of Control results from a resignation by Executive for Good Reason based (in whole or in part) on a decrease in annual base salary, as in effect immediately prior to such reduction), to be paid in a lump sum on the sixtieth (60<sup>th</sup>) day following such termination; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**Payment of an amount equal to (a) 100% of the cash value of Executive's Annual Performance Bonus measured as of the date of termination at the applicable target (i.e., 100%) performance level as in effect as of the date of such termination (or, in the event that the applicable Qualifying Termination Upon Change of Control results from a resignation by Executive for Good Reason based (in whole or in part) on a decrease in bonus opportunity (versus the bonus opportunity in effect immediately prior to such reduction) to be paid in a lump sum on the 60<sup>th</sup> day following such termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(c)**Stock Awards.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)Time-Based Awards**. All Stock Awards other than Performance Stock Awards granted by the Company to the Executive and outstanding immediately prior to such Qualifying Termination Upon Change of Control shall have their vesting accelerated, such that 100% of the then unvested shares subject to such Stock Award will be deemed vested and, if applicable, exercisable, as of the date of termination of employment.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)Performance-Based Awards**. A Prorated Portion of all shares subject to Performance Stock Awards outstanding immediately prior to such Qualifying Termination Upon Change of Control (other than Stock Awards that constitute a portion of Executive's Annual Performance Bonus) shall vest at the applicable target (i.e., 100%) performance level. The shares vesting pursuant to this Section 2(c)(ii) will be issued in accordance with Section 18(a).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(d)Benefits Continuation**. Subject to Executive electing continuation coverage within the time period prescribed under law (the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended ("***COBRA***")) in connection with such termination for Executive and/or Executive's dependents,

1. ------

the Company shall pay such COBRA premiums for 12 months from the date of termination of employment; provided that, notwithstanding the above, in the event Executive becomes ineligible for COBRA or eligible for coverage under Medicare or another employer's group health plan (other than a plan which imposes a preexisting condition exclusion unless the preexisting condition exclusion does not apply) during the period provided for herein, the Company shall cease payment of the COBRA premiums thereafter.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**3.Qualifying Termination Outside Change of Control Period**. In the event of the Executive's Qualifying Termination of Employment, Executive shall be entitled to the following separation benefits in this Section 3:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)Annual Performance Bonus.** Executive shall be entitled to a cash payment equal to the value of a Prorated Portion of Executive's Annual Performance Bonus at the lesser of target (i.e., 100%) performance level or actual performance level measured as of the date of termination for the year in which such termination occurs, to be paid in a lump sum on the 60<sup>th</sup> day following such termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)Severance Payment.** Payment of an amount equal to one year of Executive's annual base salary from the Company as in effect as of the date of such termination (or, in the event that the applicable Qualifying Termination results from a resignation by Executive for Good Reason based (in whole or in part) on a decrease in annual base salary, as in effect immediately prior to such reduction), for a period of 12 months and 100% of the cash value of Executive's Annual Performance Bonus at the applicable target (i.e., 100%) performance level as in effect as of the date of such termination both to be paid in a lump sum on the 60<sup>th</sup> day following such termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(c)** **Stock Awards**. No acceleration of Stock Awards.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(d)Benefits Continuation**. Subject Executive electing continuation coverage within the time period prescribed under law in connection with such termination for Executive and/or Executive's dependents, the Company shall pay such COBRA premiums for 12 months from the date of Qualifying Termination of Employment; provided that, notwithstanding the above, in the event Executive becomes ineligible for COBRA or eligible for coverage under Medicare or another employer's group health plan (other than a plan which imposes a preexisting condition exclusion unless the preexisting condition exclusion does not apply) during the period provided for herein, the Company shall cease payment of the COBRA premiums thereafter.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**4.**Retirement Benefits.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)**In order to be eligible for the Retirement Benefits described in Section 4(b) below, the Executive must meet both of the following criteria:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**At the time of Executive's termination of employment with the Company (other than in circumstances in which such termination (i) constitutes a termination with Cause or (ii) does not qualify as a Separation from Service), the Executive has (1) achieved the age of 50 and served the Company for at least 15 years; or (2) achieved the age of 55 and served the Company for at least 10 years; provided, however, if such termination of employment also constitutes a Qualifying Termination of Employment or a Qualifying Termination Upon Change of Control, Executive will receive the benefits provided in Section 2 or Section 3, as applicable, instead of the benefits provided under this Section 4; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**At any time during which the Executive is receiving Retirement Benefits, the Executive shall not (1) be employed or on contract full time by a third party (excluding a non-profit organization described in Section 501(c)(3) of the Code) or (2) materially breach the terms and conditions of the Confidentiality Agreement. If the Executive engages in either (1) or (2), then all Retirement Benefits shall terminate immediately and permanently.

2. ------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)**If both conditions in Sections 4(a)(i) and 4(a)(ii) above are satisfied (a "***Retirement***"), the Executive shall be entitled to receive the following "***Retirement Benefits***:"

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)Annual Performance Bonus.** A cash payment equal to the value of a Prorated Portion of the target (i.e., 100%) performance level of Executive's Annual Performance Bonus measured as of the date of termination for the year in which such termination occurs, to be paid in a lump sum on the 60<sup>th</sup> day following such termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)** **Stock Awards.** No acceleration of Stock Awards.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**5.Termination of Employment due to Death or Permanent Disability**. In the event of the termination of Executive's employment due to Executive's death or Permanent Disability, the Executive's legal representative or any person empowered to act on Executive's behalf under Executive's will or under the then applicable laws of descent and distribution shall be entitled to the following:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)Annual Performance Bonus.** A cash payment equal to the value of a Prorated Portion of the target (i.e., 100%) performance level of Executive's Annual Performance Bonus measured as of the date of termination for the year in which such termination occurs, to be paid in a lump sum on the 60<sup>th</sup> day following such termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)Stock Awards.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)Time-Based Awards**. All Stock Awards other than Performance Stock Awards granted by the Company to the Executive and outstanding immediately prior to such termination shall have their vesting accelerated, such that 100% of the then unvested shares subject to such Stock Award will be deemed vested and, if applicable, exercisable, as of the date of termination.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)Performance Stock Award Vesting.** Continued vesting with Executive being deemed to continue to remain in continuous employment for purposes of vesting of Performance Stock Awards granted to the Executive by the Company and outstanding prior to such termination of employment, other than Performance Stock Awards granted in connection with Executive's Annual Performance Bonus.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**6.Payment of Taxes**. All payments made to Executive under this Agreement shall be subject to all applicable federal and state income, employment and payroll taxes, including all withholding taxes.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**7.Parachute Payment**. Executive is strongly encouraged to review the following provision and consult with Executive's tax and financial advisor concerning the application of any personal tax consequences related to any payments provided for under this Agreement and the following provision. In the event that any of the payments and benefits provided for in this Agreement or otherwise payable to the Executive (a "***280G Payment***") would (x) constitute a "parachute payment" within the meaning of Section 280G of the Code, and (y) but for this sentence, be subject to the excise tax imposed by Section 4999 of the Code (the "***Excise Tax***"), then the amount of any such 280G Payment to be paid (a "***Payment***") shall be equal to the Reduced Amount. The "***Reduced Amount***" shall be either (i) the largest portion of the Payment that would result in no portion of the Payment (after reduction) being subject to the Excise Tax or (ii) the largest portion, up to and including the total, of the Payment, whichever amount (i.e., the amount determined by clause (i) or by clause (ii)), after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise Tax (all computed at the highest applicable marginal rate), results in the receipt by Executive, on an after-tax basis, of the greater economic benefit notwithstanding that all or some portion of the Payment may be subject to the Excise Tax. If a reduction in a Payment is required pursuant to the preceding sentence and the Reduced Amount is determined pursuant to clause (i) of the preceding

3. ------

sentence, the reduction shall occur in the manner (the "***Reduction Method***") that results in the greatest economic benefit for Executive. If more than one method of reduction will result in the same economic benefit, the items so reduced will be reduced pro rata (the "***Pro Rata Reduction Method***"). Notwithstanding the foregoing, if the Reduction Method or the Pro Rata Reduction Method would result in any portion of the Payment being subject to taxes pursuant to Section 409A that would not otherwise be subject to taxes pursuant to Section 409A, then the Reduction Method and/or the Pro Rata Reduction Method, as the case may be, shall be modified so as to avoid the imposition of taxes pursuant to Section 409A as follows: (A) as a first priority, the modification shall preserve to the greatest extent possible, the greatest economic benefit for Executive as determined on an after-tax basis; (B) as a second priority, Payments that are contingent on future events (e.g., being terminated without cause), shall be reduced (or eliminated) before Payments that are not contingent on future events; and (C) as a third priority, Payments that are "deferred compensation" within the meaning of Section 409A shall be reduced (or eliminated) before Payments that are not deferred compensation within the meaning of Section 409A. Unless the Company and the Executive otherwise agree in writing, any determination required under this Section 7 shall be made in writing by independent public accountants appointed by the Company and reasonably acceptable to the Executive (the "***Accountants***"), whose determination shall be conclusive and binding upon the Executive and the Company for all purposes. The Company shall bear all costs the Accountants may reasonably incur in connection with such determination, and the Company and the Executive shall furnish to the Accountants such information and documents as the Accountants may reasonably request in order to make a determination under this Section 7.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**8.Exclusive Remedy**. The payments and benefits provided for in Section 2, Section 3, Section 4 or Section 5 shall constitute the Executive's sole and exclusive remedy for any alleged injury or other damages arising out of the cessation of the employment relationship between the Executive and the Company. The parties hereto agree that irreparable damage would occur if any of the provisions of this Agreement were not performed in accordance with these specific terms or were otherwise breached. It is accordingly agreed that the parties shall be entitled to enforce specifically the terms and provisions hereof, this being in addition to any other remedy to which they are entitled at law or in equity.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**9.Proprietary and Confidential Information**. The Executive agrees to abide by the terms and conditions of the Employee Confidential Information and Inventions Assignment Agreement between the Executive and the Company, as in effect from time to time (the "Confidentiality Agreement").

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**10.Interpretation**. Executive and the Company agree that this Agreement shall be interpreted in accordance with and governed by the laws of the State of California, without regard to such state's conflict of laws rules. Further, the Board of Directors (or its delegate) shall have the sole power and authority to administer and interpret this Agreement and to make all decisions required to be made hereunder, and any such interpretation or decision shall be final and binding on Executive and the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**11.Entire Agreement; Conflict in Benefits**. This Agreement constitutes the entire agreement of the parties hereto with respect to the subject matter of this Agreement and supersedes all prior arrangements, if any, whether written or oral, and understandings regarding the subject matter of this Agreement. This Agreement is intended to be sole the agreement providing for severance or similar benefits to Executive, and this Agreement supersedes the provisions of any other plan, program, or arrangement providing severance or similar payments; provided, however, for the avoidance of doubt, Executive (or Executive's estate or legal representative) shall remain eligible to receive disability payments and life insurance payments pursuant to the terms of the Company's standard long-term disability and life insurance benefit programs, as applicable. With respect to the Company's equity incentive plans or award agreements thereunder, this Agreement provides for the only post-termination vesting Executive is entitled to receive, and, except as otherwise provided herein, all Stock Awards (including Stock Awards comprising the Executive's Annual Performance Bonus), to the extent unvested as of the Executive's termination of

4. ------

employment or service shall be forfeited for no additional consideration without any further action on the part of either the Executive or the Company. For the avoidance of doubt, this Agreement does not supersede or replace the Confidentiality Agreement or any offer letter or other agreement or arrangement to which the Company and the Executive are parties that has been reduced to writing and which does not relate to the subject matter hereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**12.Release of Claims**. Executive shall be entitled to the payments and benefits pursuant to Section 2, Section 3, Section 4 or Section 5 of this Agreement only if Executive (or, if applicable, Executive's legal representative) executes and returns to the Company a release of claims (the "***Release of Claims***") in favor of the Company in a form reasonably satisfactory to the Company, and such Release of Claims becomes irrevocably effective in accordance with its terms on or prior to the 60<sup>th</sup> day following the date of Separation from Service (the "***Release Agreement Deadline***"). If the Release of Claims does not become irrevocably effective by the Release Agreement Deadline, the Executive will forfeit any right to severance benefits or Retirement Benefits pursuant to this Agreement. Regardless of whether the Release of Claims becomes effective prior to the Release Agreement Deadline, but subject to Section 18(b), any severance benefits or Retirement Benefits payable prior to the Release Agreement Deadline shall accrue and be paid on the Release Agreement Deadline, with the remainder of the payments to be made as originally scheduled (generally meaning payments accrue from termination of employment until the Release Agreement Deadline, accrued amounts are paid on the Release Agreement Deadline, and the remainder of payments continue as originally scheduled). Notwithstanding the foregoing, the Release of Claims shall not be construed to waive any right to indemnification or contribution otherwise available to Executive under law or rules of corporate governance with respect to claims by third parties for actions or omissions in Executive's role as an officer of the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**13.**Successors and Assigns.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)Successors of the Company**. The Company will require any successor or assign (whether direct or indirect, by purchase, merger, consolidation or otherwise) to all or substantially all of the business and/or assets of the Company, expressly, absolutely and unconditionally to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession or assignment had taken place. Failure of the Company to obtain such agreement prior to the effectiveness of any such succession transaction shall be a breach of this Agreement effective as of the date of closing of such transaction, which breach, for avoidance of doubt, if not timely cured, may entitle the Executive to resign Executive's employment with the Company for Good Reason. As used in this Agreement, "Company" shall mean the Company as defined above and any successor or assign to its business and/or assets as aforesaid which executes and delivers the agreement provided for in this Section 13 or which otherwise becomes bound by all the terms and provisions of this Agreement by operation of law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)Heirs of Executive**. This Agreement shall inure to the benefit of and be enforceable by the Executive's personal and legal representatives, executors, administrators, successors, heirs, distributees, devisees and legatees.

5. ------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**14.Notices**. For purposes of this Agreement, notices and all other communications provided for in the Agreement shall be in writing and shall be deemed to have been duly given when delivered or mailed by United States registered mail, return receipt requested, postage prepaid, as follows:

if to the Company:

Power Integrations, Inc.<br>5245 Hellyer Avenue<br>San Jose, California 95138<br>Attn: Chief Financial Officer and Lead People Officer or Head of Human Resources

and if to the Executive, at the address specified in the Company's personnel records. Notice may also be given at such other address as either party may have furnished to the other in writing in accordance herewith, except that notices of change of address shall be effective only upon receipt.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**15.No Representations**. Executive acknowledges that he/she is not relying and has not relied on any promise, representation or statement made by or on behalf of the Company which is not set forth in this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**16.Validity**. If any one or more of the provisions (or any part thereof) of this Agreement shall be held invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions (or any part thereof) shall not in any way be affected or impaired thereby.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**17.Consultation with Legal and Financial Advisors**. Executive acknowledges that this Agreement confers significant legal rights, and may also involve the waiver of rights under other agreements; that the Company has encouraged Executive to consult with Executive's personal legal and financial advisers; and that Executive has had adequate time to consult with Executive's advisers before signing this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**18.Application of Section 409A and Other Limitations.** Executive is strongly encouraged to review the following provisions and consult with Executive's tax and financial advisor concerning the application of any personal tax consequences related to any payments provided for under this Agreement and the following provisions.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)**If any Stock Award vesting pursuant to Section 2(c)(ii):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**does not constitute "deferred compensation" within the meaning of Section 409A, the shares vesting will be issued on the 60th day following the Qualifying Termination Upon Change of Control.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**does constitute "deferred compensation" within the meaning of Section 409A, the shares vesting will be converted into the same consideration received by the holders of the Company's common stock pursuant to the Change of Control, and such consideration will be issued in accordance with the delivery schedule for such Stock Award in effect immediately prior to the Change of Control.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)**Notwithstanding anything to the contrary herein, the following provisions apply to all amounts provided in this Agreement (the "***Agreement Payments***"): (A) The Agreement Payments are intended to qualify for an exemption from application of Section 409A or comply with the requirements of Section 409A to the extent necessary to avoid adverse personal tax consequences under Section 409A, and any ambiguities herein shall be interpreted accordingly. (B) Agreement Payments contingent on a termination of employment shall not commence until Executive has a Separation from Service. (C) Each

6. ------

installment of a Agreement Payments is a separate "payment" for purposes of Treas. Reg. Section 1.409A-2(b)(2)(i). (D) Each Agreement Payments is intended to satisfy the exemptions from application of Section 409A provided under Treasury Regulations Sections 1.409A-1(b)(4), 1.409A-1(b)(5) and 1.409A-1(b)(9) to the maximum extent available. However, if such exemptions are not available and Executive is, upon Executive's Separation from Service, a "specified employee" for the purposes of Section 409A, then, solely to the extent necessary to avoid adverse personal tax consequences under Section 409A, the timing of the Agreement Payments otherwise payable prior to such date shall be delayed until the earlier of (x) 6 months and one day after Executive's Separation from Service, or (y) Executive's death, and any payments otherwise scheduled to be made after such date shall be paid as originally scheduled. (E) To the extent that any reimbursements payable to Executive pursuant to Section 1 are subject to the provisions of Section 409A, the following provisions will apply in addition to the provisions of any applicable expense reimbursement policy: (a) to be eligible to obtain reimbursement for such expenses Executive must submit expense reports within 45 days after the expense is incurred, (b) any such reimbursements will be paid no later than the earlier of (x) 30 days after the date Executive submits receipts for the expenses or (y) December 31 of the year following the year in which the expense was incurred, (c) the amount of expenses reimbursed in one year will not affect the amount eligible for reimbursement in any subsequent year, and (d) the right to reimbursement under this Agreement will not be subject to liquidation or exchange for another benefit.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(c)**Notwithstanding anything to the contrary set forth herein, if the Company determines, in its sole discretion, that it cannot provide the COBRA premiums, or other medical or dental coverage premiums (together the "***Health Care Benefits***") contemplated under this Agreement without potentially incurring financial costs or penalties under applicable law (including, without limitation, Section 2716 of the Public Health Service Act), the Company shall in lieu thereof pay Executive a taxable cash amount, which payment shall be made regardless of whether Executive or Executive's eligible family members elect health care continuation coverage (the "***Health Care Benefit Payment***"). Subject to any further delay in payment required by Section 12 or Section 18(b) of this Agreement, the Health Care Benefit Payment shall be paid in monthly installments on the same schedule that such amounts would otherwise have been paid to the insurer. The Health Care Benefit Payment shall be equal to the amount that the Company would have otherwise paid to provide the Health Care Benefits for the duration of the applicable severance period (which amount shall be calculated based on the premium for the first month of coverage), subject to applicable withholding.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**19.Definitions**. As used in this Agreement, unless the context requires a different meaning, the following terms shall have the meanings set forth herein:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(a)**"***Annual Performance Bonus***" means the Executive's current annual performance incentive bonus, whether consisting of cash or Stock Awards, as determined by the Board of Directors or Compensation Committee on an annual basis.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(b)**"***Cause***" means:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**A material act of theft, dishonesty, fraud, intentional falsification of any employment or Company records or material breach of fiduciary duty;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**A material violation of any material written Company policy as in effect from time to time, including material violations of any code of business conduct, ethics or insider trading policy, or any material improper disclosure of the Company's confidential, business or proprietary information by Executive;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iii)**Any action by Executive intentionally causing or expected to cause material harm to the reputation and standing of the Company, or gross negligence or willful misconduct in the performance of Executive's assigned duties (but not mere unsatisfactory performance); or

7. ------

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iv)**The Executive's conviction (including any plea of guilty or nolo contendere) of a crime involving moral turpitude or any felony.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(c)**"Change of Control" means:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**Any "***person***" (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")), other than a trustee or other fiduciary holding securities of the Company under an employee benefit plan of the Company becomes the "beneficial owner" (as defined in Rule 13d-3 promulgated under the Exchange Act), directly or indirectly, of securities of the Company representing 50% or more of (A) the outstanding shares of common stock of the Company or (B) the combined voting power of the Company's then-outstanding securities;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**The Company is party to a merger or consolidation which results in the holders of voting securities of the Company outstanding immediately prior thereto failing to continue to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity) at least 50% of the combined voting power of the voting securities of the Company or such surviving entity outstanding immediately after such merger or consolidation;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iii)**There occurs a change in the Board of Directors of the Company within a two-year period, as a result of which fewer than a majority of the Directors are Incumbent Directors. For purposes of this Agreement, an "***Incumbent Director***" is any director who is either:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(A)**A director of the Company as of the Effective Date; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(B)**A director who is elected or nominated for election to the Board of Directors of the Company with the affirmative votes of at least a majority of the Incumbent Directors at the time of such election or nomination (but shall not include an individual whose election or nomination is in connection with an actual or threatened proxy contest relating to the election of directors to the Company).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iv)**The sale or disposition of 50% or more of the Company's consolidated assets (or consummation of any transaction having similar effect); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(v)**The dissolution or liquidation of the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(d)**"***Code***" means the Internal Revenue Code of 1986, as amended.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(e)**"***Company***" shall mean Power Integrations, Inc. and, following a Change of Control, any successor or assign to its business and/or assets that agrees or otherwise becomes bound by all the terms and provisions of this Agreement by operation of law.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(f)**"***Good Reason***" means the occurrence of any of the following conditions, without Executive's written consent, which condition(s) remain(s) in effect 20 days after written notice to the Board of Directors from Executive of such condition(s), if such notice is given within 90 days of the occurrence of such condition(s):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**A material decrease in Executive's annual base salary, or the target opportunity for Executive's Annual Performance Bonus, other than any general decrease that affects a majority of the Company's then senior executives in substantially the same proportions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**A demotion, a material reduction in Executive's position, responsibilities or duties or a material, adverse change in Executive's substantive functional responsibilities or duties, provided, however, that in the event of a Change of Control, Executive will be deemed demoted and Executive's

8. ------

position, responsibilities or duties materially reduced or Executive's substantive functional responsibilities or duties materially adversely changed if Executive is not responsible for at least substantially the same function that Executive had in the Company prior to the Change of Control;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iii)**The relocation of Executive's workplace for the Company to a location increasing Executive's commute time by more than 30 minutes as compared to Executive's commute time to the current location of Executive's workplace or a material adverse change in the working conditions or established working hours which persists for a period of six continuous months; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iv)**Any material breach of this Agreement by the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(g)**"***Performance Stock Award***" means any Stock Award subject to vesting upon the achievement of any performance level regardless of the length of any performance period.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(h)**"Permanent Disability" means that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**The Executive has been incapacitated by bodily injury or disease so as to be prevented thereby from engaging in the performance of the Executive's duties;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**Such total incapacity shall have continued for a period of six consecutive months;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iii)**Such incapacity will, in the opinion of a qualified physician, be permanent and continuous during the remainder of the Executive's life; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(iv)**Such incapacity results in Executive's Separation from Service.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**"***Prorated Portion***" means a fraction the numerator of which is the number of days in an applicable performance period prior to such Executive's termination of employment and the denominator of which is the total number of days in such performance period.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(j)**"***Qualifying Termination of Employment***" means Executive's Separation from Service that results from:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**Any termination of employment of the Executive by the Company without Cause; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**Any resignation by the Executive for Good Reason.

"Qualifying Termination of Employment" shall not include any termination of the employment of the Executive (a) by the Company for Cause; (b) as a result of Permanent Disability of the Executive; (c) as a result of the death of the Executive; (d) as a result of the voluntary termination of employment by the Executive for reasons other than Good Reason; or (e) that constitutes a Qualifying Termination Upon Change of Control.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(k)**"***Qualifying Termination Upon Change of Control***" means Executive's Separation from Service that results from:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(i)**Any termination of the employment of the Executive by the Company without Cause on or within 3 months prior to or 12 months after the occurrence of a Change of Control; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(ii)**Any resignation by the Executive for Good Reason on or within 3 months prior or 12 months after the occurrence of a Change of Control.

9. ------

"Qualifying Termination Upon Change of Control" shall not include any termination of the employment of the Executive (a) by the Company for Cause; (b) as a result of Permanent Disability of the Executive; (c) as a result of the death of the Executive; or (d) as a result of the voluntary termination of employment by the Executive for reasons other than Good Reason.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(l)**"***Release of Claims***" means the release of claims required by Section 12 of this Agreement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(m)**"***Section 409A***" means Section 409A of the Code and the regulations and other guidance thereunder and any state law of similar effect.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(n)**"***Separation from Service***" means a "separation from service" for the purposes of Section 409A with respect to the Company.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**(o)**"***Stock Award***" shall (i) have the same meaning as the term "Award" under the Company's 2016 Incentive Award Plan, as amended from time to time and any successor plan thereto, and (ii) mean any equity or equity-based incentive award granted by the Company to Executive, whether or not such award was granted under an equity incentive plan adopted by the Company.

10. ------

## Exhibit 23.1

**Exhibit 23.1**

**CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

We consent to the incorporation by reference in Registration Statement Nos. 333-232803, 333-214240, 333-183126, 333-152455, 333-146025, 333-122370, 333-119015, 333-112135, 333-102676, 333-86270, 333-59564, 333-42194, 333-83083, 333-69871, 333-56381, 333-258247, 333-291784 and 333-293088 on Form S-8 of our reports dated February 6, 2026, relating to the financial statements of Power Integrations, Inc. and the effectiveness of Power Integrations, Inc.'s internal control over financial reporting appearing in this Annual Report on Form 10-K for the year ended December 31, 2025.

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| |
|:---|
| /s/ DELOITTE & TOUCHE LLP |
| San Jose, California |
| February 6, 2026 |

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## Exhibit 31.1

**Exhibit 31.1**

**CERTIFICATION OF CHIEF EXECUTIVE OFFICER**

I, Jennifer Lloyd certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this Form 10-K of Power Integrations, Inc.;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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.

---

| | | | |
|:---|:---|:---|:---|
| Dated: | February 6, 2026 | By: | /s/ JENNIFER LLOYD |
|  |  |  | Jennifer Lloyd |
|  |  |  | Chief Executive Officer |

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## Exhibit 31.2

**Exhibit 31.2**

**CERTIFICATION OF CHIEF FINANCIAL OFFICER**

I, Nancy Erba, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. I have reviewed this Form 10-K of Power Integrations, Inc.;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(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.

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| | | | |
|:---|:---|:---|:---|
| Dated: | February 6, 2026 | By: | /s/ NANCY ERBA |
|  |  |  | Nancy Erba |
|  |  |  | Chief Financial Officer |

---

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## Exhibit 32.1

**Exhibit 32.1**

**CERTIFICATION OF CHIEF EXECUTIVE OFFICER**

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 Power Integrations, Inc. (the "Company") on Form 10-K for the year ended December 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Jennifer Lloyd, Chief Executive Officer of the Company, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 ("Section 906"), certify to the best of my knowledge that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| | | | |
|:---|:---|:---|:---|
| 5<br>|  |  |  |
| Dated: | February 6, 2026 | By: | /s/ Jennifer Lloyd |
|  |  |  | Jennifer Lloyd |
|  |  |  | Chief Executive Officer |

---

*A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.*

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## Exhibit 32.2

**Exhibit 32.2**

**CERTIFICATION OF CHIEF FINANCIAL OFFICER**

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF

THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Power Integrations, Inc. (the "Company") on Form 10-K for the year ended December 31, 2025, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Nancy Erba, Chief Financial Officer of the Company, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 ("Section 906"), certify to the best of my knowledge that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) The Report fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

---

| | | | |
|:---|:---|:---|:---|
| Dated: | February 6, 2026 | By: | /s/ NANCY ERBA |
|  |  |  | Nancy Erba |
|  |  |  | Chief Financial Officer |

---

*A signed original of this written statement required by Section 906, or other document authenticating, acknowledging, or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section 906, has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.*

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