MONOLITHIC POWER SYSTEMS, INC. (MPWR) Historical Stock Prices
MONOLITHIC POWER SYSTEMS, INC. (MPWR) is a publicly traded company on the Nasdaq, categorized under SIC 3674 (Semiconductors & Related Devices). Access real-time SEC filings, 10-K annual reports, 10-Q quarterlies, 8-K current reports, PCAOB auditor history, and executive compensation disclosures.
Ticker: MPWR
CIK: 1280452
Exchange: Nasdaq
SIC 3674: Semiconductors & Related Devices
Fiscal Year End: 12/31
State: DE
Independent PCAOB Auditor
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Audit Firm
Ernst & Young LLP
Auditor SinceSince 12/31/2019 12:00:00 AM
Lead Engagement PartnerJohn Decker
Audit LocationSan Jose, California, United States
Latest SEC EDGAR Filings
Showing 10-K, 10-Q, 8-K, Form 4, and other SEC submissions| Form | Filing Date | Reporting Period | Description | Accession Number | Actions |
|---|---|---|---|---|---|
| 4 | 2026-09-30 | 2026-09-28 | PRIMARY DOCUMENT | 0001214659-26-012375 | View SEC Doc Filr Page |
| 144 | 2026-09-28 | — | 144 Filing | 0001950047-26-009850 | View SEC Doc Filr Page |
| 8-K | 2026-09-10 | 2026-09-10 | 8-K | 0001628280-26-061318 | View SEC Doc Filr Page |
| 4 | 2026-09-02 | 2026-08-31 | PRIMARY DOCUMENT | 0001214659-26-011363 | View SEC Doc Filr Page |
| 4 | 2026-08-26 | 2026-08-24 | PRIMARY DOCUMENT | 0001214659-26-010932 | View SEC Doc Filr Page |
| 4 | 2026-08-25 | 2026-08-24 | PRIMARY DOCUMENT | 0001214659-26-010853 | View SEC Doc Filr Page |
| 144 | 2026-08-24 | — | 144 Filing | 0001280452-26-000017 | View SEC Doc Filr Page |
| 4 | 2026-08-19 | 2026-08-17 | PRIMARY DOCUMENT | 0001214659-26-010630 | View SEC Doc Filr Page |
| 144 | 2026-08-17 | — | 144 Filing | 0001280452-26-000014 | View SEC Doc Filr Page |
| 4 | 2026-08-13 | 2026-08-11 | PRIMARY DOCUMENT | 0001214659-26-010101 | View SEC Doc Filr Page |
| 144 | 2026-08-11 | — | 144 Filing | 0001969223-26-000881 | View SEC Doc Filr Page |
| 4 | 2026-08-06 | 2026-08-04 | PRIMARY DOCUMENT | 0001214659-26-009744 | View SEC Doc Filr Page |
| 4 | 2026-08-06 | 2026-08-05 | PRIMARY DOCUMENT | 0001214659-26-009739 | View SEC Doc Filr Page |
| 4 | 2026-08-05 | 2026-08-03 | PRIMARY DOCUMENT | 0001214659-26-009676 | View SEC Doc Filr Page |
| 144 | 2026-08-05 | — | 144 Filing | 0001950047-26-007680 | View SEC Doc Filr Page |
| 10-Q | 2026-08-05 | 2026-06-30 | 10-Q | 0001628280-26-053275 | View SEC Doc Filr Page |
| 8-K | 2026-07-30 | 2026-07-30 | 8-K | 0001628280-26-051029 | View SEC Doc Filr Page |
| 4 | 2026-07-28 | 2026-07-25 | PRIMARY DOCUMENT | 0001214659-26-009117 | View SEC Doc Filr Page |
| 4 | 2026-07-17 | 2026-07-15 | PRIMARY DOCUMENT | 0001214659-26-008703 | View SEC Doc Filr Page |
| 144 | 2026-07-15 | — | 144 Filing | 0001950047-26-007138 | View SEC Doc Filr Page |
| SCHEDULE 13G | 2026-07-15 | — | SCHEDULE 13G Filing | 0000914208-26-000222 | View SEC Doc Filr Page |
| SCHEDULE 13G/A | 2026-07-08 | — | SCHEDULE 13G/A Filing | 0000315066-26-001456 | View SEC Doc Filr Page |
| 4 | 2026-07-06 | 2026-07-01 | PRIMARY DOCUMENT | 0001214659-26-008236 | View SEC Doc Filr Page |
| 8-K | 2026-06-12 | 2026-06-11 | 8-K | 0001628280-26-042820 | View SEC Doc Filr Page |
| 4 | 2026-06-03 | 2026-06-01 | PRIMARY DOCUMENT | 0001214659-26-007138 | View SEC Doc Filr Page |