# EDGAR Filing Document

**Accession Number:** 0000833640
**File Stem:** 0000833640-26-000067
**Filing Date:** 2026-4
**Character Count:** 2616
**Document Hash:** ada0f4a3573d5f60d2099f7004cc7eb4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000833640-26-000067.hdr.sgml**: 20260421

**ACCESSION NUMBER**: 0000833640-26-000067

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260421

**DATE AS OF CHANGE**: 20260421

**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:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-23441
- **FILM NUMBER:** 26879718

**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

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 14A INFORMATION**

**Proxy Statement Pursuant to Section 14(a) of the**

**Securities Exchange Act of 1934**

**(Amendment No.&nbsp;&nbsp;&nbsp;&nbsp;)**

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;Filed by the Registrant ☒ | &nbsp;&nbsp;Filed by the Registrant ☒ | &nbsp;&nbsp;Filed by a Party other than the Registrant ☐ |
| &nbsp;&nbsp;Check the appropriate box: | &nbsp;&nbsp;Check the appropriate box: |  |
| &nbsp;&nbsp;☐ | &nbsp;&nbsp;Preliminary Proxy Statement | &nbsp;&nbsp;Preliminary Proxy Statement |
| &nbsp;&nbsp;☐ | &nbsp;&nbsp;Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) | &nbsp;&nbsp;Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| &nbsp;&nbsp;☐ | &nbsp;&nbsp;Definitive Proxy Statement | &nbsp;&nbsp;Definitive Proxy Statement |
| &nbsp;&nbsp;☒ | &nbsp;&nbsp;Definitive Additional Materials | &nbsp;&nbsp;Definitive Additional Materials |
| &nbsp;&nbsp;☐ | &nbsp;&nbsp;Soliciting Material Pursuant to § 240.14a-12 | &nbsp;&nbsp;Soliciting Material Pursuant to § 240.14a-12 |

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**Power Integrations, Inc.**

**(Name of Registrant as Specified in Its Charter)**

**(Name of Person(s) Filing Proxy Statement if Other Than the Registrant)**

Payment of Filing Fee (Check the appropriate box)

☒ No fee required.

☐ Fee paid previously with preliminary materials.

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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