POWI

EX-99.1

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EX-99.1

Document

Exhibit 99.1

Power Integrations Reports Second-Quarter Financial Results

Revenue increased ten percent sequentially to $118.9 million; GAAP earnings were $0.17 per diluted share; non-GAAP earnings were $0.37 per diluted share

Cash flow from operations was $22.0 million

SAN JOSE, Calif. – August 5, 2026 – Power Integrations (NASDAQ: POWI) today announced financial results for the quarter ended June 30, 2026. Revenue for the second quarter was $118.9 million, up ten percent from the prior quarter and up three percent from the second quarter of 2025. GAAP net income for the second quarter was $9.8 million or $0.17 per diluted share compared to $0.06 per diluted share in the prior quarter and $0.02 per diluted share in the second quarter of 2025. Cash flow from operations for the second quarter was $22.0 million.

In addition to its GAAP results, the company provided certain measures not calculated according to GAAP. Non-GAAP results exclude stock-based compensation, amortization of acquisition-related intangible assets, an accrual for a judgment in a legal matter, a restructuring charge recognized in the first quarter of 2026 and the tax effects of these items. Non-GAAP net income for the second quarter of 2026 was $20.9 million or $0.37 per diluted share compared to $0.25 per diluted share in the prior quarter and $0.35 per diluted share in the second quarter of 2025. A reconciliation of GAAP to non-GAAP financial results and outlook is included with the tables accompanying this press release.

Power Integrations CEO Jen Lloyd commented: "We delivered strong second-quarter results, highlighted by continued growth in industrial markets, improved profitability, and lower inventories in the distribution channel and on our balance sheet. The demand drivers behind our business remain compelling, as investment in renewable energy, grid infrastructure and AI data centers drives customer demand for higher efficiency, reliability and power density. Our new 2200 V PowiGaN™ technology extends our capabilities in high-voltage GaN and positions us to support customer roadmaps in these markets over the long term."

Power Integrations paid a dividend of $0.215 per share on June 30, 2026 to stockholders of record as of May 29, 2026. A dividend of $0.215 per share will be paid on September 30, 2026, to stockholders of record as of August 31, 2026.

Financial Outlook

The company issued the following outlook for the third quarter of 2026:

•Revenue is expected to be in a range of $122 million to $130 million.

•GAAP gross margin is expected to be between 53.3 percent and 54.4 percent, and non-GAAP gross margin is expected to be between 54 percent and 55 percent.

•GAAP operating expenses are expected to be between $55 million and $56 million, and non-GAAP operating expenses are expected to be between $45 million and $46 million.

•GAAP operating margin is expected to be between 8.3 percent and 10.9 percent, and non-GAAP operating margin is expected to be between 17 percent and 19 percent.

Conference Call Information and Supplemental Materials

Power Integrations management will hold a conference call today at 1:30 p.m. Pacific time. A live webcast of the call will be available on the company's investor web page, http://investors.power.com, along with supplemental materials related to today’s earnings release.

About Power Integrations

Power Integrations, Inc. is a leading innovator in semiconductor technologies for high-voltage power conversion. The company’s products are key building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission, conversion and consumption of power in applications ranging from milliwatts to megawatts in applications such as AI data centers, EVs and high-voltage DC infrastructure. For more information, please visit www.power.com.

Note Regarding Use of Non-GAAP Financial Measures

The non-GAAP measures provided in this press release, including non-GAAP earnings per diluted share, non-GAAP net income, non-GAAP gross margin, non-GAAP operating expenses, and non-GAAP operating margin, should not be considered a substitute for, or superior to, measures of financial performance prepared in accordance with generally accepted accounting principles (GAAP) in the United States. The non-GAAP financial measures are presented only as supplemental information to understand the Company’s operating results. In addition to the company's consolidated financial statements, which are presented according to GAAP, the company provides certain non-GAAP financial information that excludes stock-based compensation expenses recorded under ASC 718-10, amortization of acquisition-related intangible assets, an accrual for a judgment in a legal matter, a restructuring charge recognized in the first quarter of 2026, and the tax effects of these items. The company considers these non-GAAP financial measures to

EX-99.1

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EX-99.1

POWI - Q1'26 - 8-K - EX99.1

Exhibit 99.1

Power Integrations Reports First-Quarter Financial Results

Revenue increased three percent year-over-year to $108.3 million; cash flow from operations was $20.0 million

SAN JOSE, Calif. – May 7, 2026 – Power Integrations (NASDAQ: POWI) today announced financial results for the quarter ended March 31, 2026. Net revenue for the first quarter was $108.3 million, up five percent from the prior quarter and up three percent from the first quarter of 2025. GAAP net income for the first quarter was $3.3 million or $0.06 per diluted share compared to $0.24 per diluted share in the prior quarter and $0.15 per diluted share in the first quarter of 2025. Cash flow from operations for the first quarter was $20.0 million.

In addition to its GAAP results, the company provided non-GAAP measures that exclude stock-based compensation, amortization of acquisition-related intangible assets, a restructuring charge associated with previously announced workforce reductions and the tax effects of these items. Non-GAAP net income for the first quarter of 2026 was $13.9 million or $0.25 per diluted share compared to $0.23 per diluted share in the prior quarter and $0.31 per diluted share in the first quarter of 2025. A reconciliation of GAAP to non-GAAP financial results and outlook is included with the tables accompanying this press release.

Power Integrations CEO Jen Lloyd commented: “Q1 was a good quarter for Power Integrations as we saw improved market demand while remaining focused on delivering innovative solutions based on our customers’ needs.  Our industrial revenue grew 23 percent year-over-year driven by a breadth of applications including renewable energy, battery storage, home automation and automotive.”

Dr. Lloyd continued: “The momentum in our industrial business reflects our strategic focus on markets where our high-voltage technologies help customers solve the most pressing challenges in power. We continue to see confirmation that EVs and AI data centers not only need innovative solutions like our PowiGaN™ technology but also—by increasing pressure on the power grid—drive growth in renewables, battery storage and DC transmission, where our gate driver products excel. We are orienting our strategy and our R&D pipeline around these highly attractive opportunities.”

Power Integrations paid a dividend of $0.215 per share on March 31, 2026. A dividend of $0.215 per share will be paid on June 30, 2026, to stockholders of record as of May 29, 2026.

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Financial Outlook

The company issued the following forecast for the second quarter of 2026:

●Revenue is expected to be in a range of $115 million to $120 million.

●GAAP gross margin is expected to be between 53.5 percent and 54.5 percent, and non-GAAP gross margin is expected to be between 54 percent and 55 percent.

●GAAP operating expenses are expected to be between $55 million and $56 million, and non-GAAP operating expenses are expected to be between $46.5 million and $47.5 million.

●GAAP operating margin is expected to be between 5.5 percent and 7.5 percent. Non-GAAP operating margin is expected to be between 13.5 percent and 15.5 percent.

Conference Call Information and Supplemental Materials

Power Integrations management will hold a conference call today at 1:30 p.m. Pacific time. A live webcast of the call will be available on the company's investor web page, http://investors.power.com, along with supplemental materials related to today’s earnings release.

About Power Integrations

Power Integrations, Inc. is a leading innovator in semiconductor technologies for high-voltage power conversion. The company’s products are key building blocks in the clean-power ecosystem, enabling the generation of renewable energy as well as the efficient transmission and consumption of power in applications ranging from milliwatts to megawatts. For more information, please visit www.power.com.

Note Regarding Use of Non-GAAP Financial Measures

In addition to the company's consolidated financial statements, which are presented according to GAAP, the company provides certain non-GAAP financial information that excludes stock-based compensation expenses recorded under ASC 718-10, amortization of acquisition-related intangible assets, a restructuring charge associated with workforce reductions implemented in the first quarter, and the tax effects of these items. The company uses these measures in its financial and operational decision-making and, with respect to non-GAAP operating income, in setting performance targets for compensation purposes. The company believes that these non-GAAP measures offer important analytical tools to help investors understand its operating results, and to facilitate comparability with the results of companies that provide similar measures. Non-GAAP measures have limitations as analytical tools and are not meant to be considered in isolation or as a substitut

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

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CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934 ​ Date of Report (Date of earliest event reported): February 1, 2026

Power Integrations, Inc. (Exact name of registrant as specified in its charter)

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Delaware

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000-23441

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94-3065014

(State or other jurisdiction

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(Commission

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(IRS Employer

of incorporation)

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File Number)

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Identification No.)

​ 5245 Hellyer Avenue San Jose, California 95138-1002 (Address of principal executive offices, including zip code) ​ Registrant's telephone number, including area code (408) 414-9200 ​

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) ​ Securities registered pursuant to Section 12(b) of the Act: ​

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Title of each class

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Name of each exchange on which registered

Common Stock, $0.001 Par Value

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POWI

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The Nasdaq Global Select Market

​ Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). ​ ​ ​

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Emerging growth company ☐

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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. ☐

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Item 1.01. Entry into a Material Definitive Agreement. On February 2, 2026, the Board of Directors (the “Board”) of Power Integrations, Inc. (the “Company”) approved a revised form of indemnification agreement (the “Indemnification Agreement”) to be entered into between the Company and each of its directors and officers. The new form Indemnification Agreement supersedes the Company’s previous form of indemnification agreement. The Indemnification Agreement provides, among other things, that the Company will indemnify the director or officer (the “Indemnitee”) to the fullest extent permitted by law against all expenses and, in the case of proceedings other than those brought by or in the right of the Company, judgments, fines and amounts paid in settlement actually and reasonably incurred by or on the Indemnitee’s behalf, in each case, in connection with proceedings in which the Indemnitee is involved by reason of any action taken or failure to act while serving as a director or officer of the Company, or of another enterprise at the request of the Company, provided that the Indemnitee acted in good faith and in a manner he or she reasonably believed to be in or not opposed to the best interests of the Company. The Company will also indemnify the Indemnitee to the fullest extent permitted by law against all expenses actually and reasonably incurred by or on the Indemnitee’s behalf in connection with any such proceeding or defense, in whole or in part, to which the Indemnitee is a party or participant and in which the Indemnitee is successful. In addition, and subject to certain limitations, the Indemnification Agreement provides for the advancement of expenses incurred by the Indemnitee in connection with any proceeding not initiated by the Indemnitee (subject to limited exceptions), and the reimbursement to the Company of the amounts advanced (without interest) to the extent that it is ultimately determined that the Indemnitee is not entitled to be indemnified by the Company. The Indemnification Agreement does not exclude any other rights to indemnification or advancement of expenses to which the Indemnitee may be entitled, including any rights arising under applicable law, the Company’s Certificate of Incorporation or Bylaws, a vote of stockholders or a resolution of directors or otherwise. The foregoing description of the Indemnification Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the form of Indemnification Agreement, a copy of which is attached hereto as Exhibit 10.1 and is incorporated herein by reference. Item 2.02. Results of Operations and Financial Condition. On February 5, 2026 the Registrant issued a press release, a copy of which is