MPWR · Nasdaq · CIK 0001280452

MONOLITHIC POWER SYSTEMS, INC.

MONOLITHIC POWER SYSTEMS, INC.’s most recent SEC filing in our snapshot is a Form 4 filed on Sep 30, 2026. In fiscal 2025 (year ended Dec 31, 2025) it reported revenue of $2.8B and net income of $621.5M, according to its XBRL data on EDGAR. Its EDGAR record lists 85 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2025
$2.8B
Net income, FY2025
$621.5M
Form 4 filings on record, past 12 months
85

Company overview

Legal name (as filed)
MONOLITHIC POWER SYSTEMS, INC.
Ticker
MPWR
SEC Central Index Key (CIK)
0001280452
Industry (SIC)
Semiconductors & Related Devices (code 3674)
Business address
WEST PALM BEACH, FL
State or country of incorporation
DE
Fiscal year ends
December 31
SEC filer category
Large accelerated filer
Position in SEC ticker list
#289 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from MONOLITHIC POWER SYSTEMS, INC.’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$1.2BFY2021$1.8BFY2022$1.8BFY2023$2.2BFY2024$2.8BFY2025
Net income
$242.0MFY2021$437.7MFY2022$427.4MFY2023$1.6BFY2024$621.5MFY2025
MPWR annual results
ItemFY2021
ended Dec 31, 2021		FY2022
ended Dec 31, 2022		FY2023
ended Dec 31, 2023		FY2024
ended Dec 31, 2024		FY2025
ended Dec 31, 2025
Revenue$1.2B$1.8B$1.8B$2.2B$2.8B
Net income$242.0M$437.7M$427.4M$1.6B$621.5M
Diluted EPS$5.05$9.05$8.76$32.60$12.86
Total assets$1.6B$2.1B$2.4B$3.5B$4.2B
Cash and equivalents$189.3M$288.6M$527.8M$691.8M$1.1B

XBRL tags used: revenue = RevenueFromContractWithCustomerExcludingAssessedTax; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

MPWR latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Feb 27, 202610-KAnnual report· period Dec 31, 2025Document · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Sep 10, 20268-KOther events· period Sep 10, 2026Document · Index
Apr 30, 2026DEF 14ADefinitive proxy statement· period Jun 11, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about MONOLITHIC POWER SYSTEMS, INC., by form type:

4 ×21144 ×128-K ×310-Q ×1SCHEDULE 13G ×1SCHEDULE 13G/A ×1SD ×1
MPWR recent filings
FiledFormWhat it isOriginal
Sep 30, 20264Statement of changes in beneficial ownership (insider trade)· period Sep 28, 2026Document · Index
Sep 28, 2026144Notice of proposed sale of securitiesDocument · Index
Sep 10, 20268-KOther events· period Sep 10, 2026Document · Index
Sep 2, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 31, 2026Document · Index
Aug 26, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 24, 2026Document · Index
Aug 25, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 24, 2026Document · Index
Aug 24, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 19, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 17, 2026Document · Index
Aug 17, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 13, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 11, 2026Document · Index
Aug 11, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 6, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 4, 2026Document · Index
Aug 6, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 5, 2026Document · Index
Aug 5, 2026144Notice of proposed sale of securitiesDocument · Index
Aug 5, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 5, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 3, 2026Document · Index
Jul 30, 20268-KResults of operations· period Jul 30, 2026Document · Index
Jul 28, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 25, 2026Document · Index
Jul 17, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 15, 2026Document · Index
Jul 15, 2026144Notice of proposed sale of securitiesDocument · Index
Jul 15, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Jul 8, 2026SCHEDULE 13G/APassive beneficial ownership report (over 5%)Document · Index
Jul 6, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 1, 2026Document · Index
Jun 12, 20268-KShareholder vote results; Other events· period Jun 11, 2026Document · Index
Jun 3, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 1, 2026Document · Index
Jun 2, 20264Statement of changes in beneficial ownership (insider trade)· period May 29, 2026Document · Index
Jun 1, 2026144Notice of proposed sale of securitiesDocument · Index
May 29, 2026SDSpecialized disclosure report (conflict minerals)Document · Index
May 29, 20264Statement of changes in beneficial ownership (insider trade)· period May 27, 2026Document · Index
May 28, 2026144Notice of proposed sale of securitiesDocument · Index
May 28, 20264Statement of changes in beneficial ownership (insider trade)· period May 26, 2026Document · Index
May 27, 20264Statement of changes in beneficial ownership (insider trade)· period May 26, 2026Document · Index
May 27, 20264Statement of changes in beneficial ownership (insider trade)· period May 22, 2026Document · Index
May 26, 2026144Notice of proposed sale of securitiesDocument · Index
May 26, 2026144Notice of proposed sale of securitiesDocument · Index
May 22, 2026144Notice of proposed sale of securitiesDocument · Index
May 20, 20264Statement of changes in beneficial ownership (insider trade)· period May 18, 2026Document · Index
May 20, 20264Statement of changes in beneficial ownership (insider trade)· period May 18, 2026Document · Index
May 19, 20264Statement of changes in beneficial ownership (insider trade)· period May 15, 2026Document · Index
May 18, 2026144Notice of proposed sale of securitiesDocument · Index

Insider filing activity

85 Form 4 filings appear in MONOLITHIC POWER SYSTEMS, INC.’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

Other companies in Semiconductors & Related Devices

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Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0001280452 and XBRL company facts. MONOLITHIC POWER SYSTEMS, INC. on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.