# EDGAR Filing Document

**Accession Number:** 0001280452
**File Stem:** 0001437749-26-014091
**Filing Date:** 2026-4
**Character Count:** 1162
**Document Hash:** 939675f384a1b55820f1761235f24b89
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001437749-26-014091.hdr.sgml**: 20260430

**ACCESSION NUMBER**: 0001437749-26-014091

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260430

**DATE AS OF CHANGE**: 20260430

**EFFECTIVENESS DATE**: 20260430

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MONOLITHIC POWER SYSTEMS INC
- **CENTRAL INDEX KEY:** 0001280452
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 770466789
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-51026
- **FILM NUMBER:** 26922437

**BUSINESS ADDRESS:**
- **STREET 1:** 1555 PALM BEACH LAKES BLVD.
- **CITY:** WEST PALM BEACH
- **STATE:** FL
- **ZIP:** 33401
- **BUSINESS PHONE:** 561-839-3999

**MAIL ADDRESS:**
- **STREET 1:** 5808 LAKE WASHINGTON BLVD. NE
- **CITY:** KIRKLAND
- **STATE:** WA
- **ZIP:** 98033

### Attached PDF Documents

**Attachment 1:** `mpwr20260429e_ars.pdf`

_No text found in this document._