Company filings profile · CIK 0001280452
MONOLITHIC POWER SYSTEMS, INC. — SEC filings & insider activity.
Real, source-linked SEC EDGAR activity for MONOLITHIC POWER SYSTEMS, INC. (MPWR): 14 filings in the last 90 days vs 33 in the prior 90 (filing-velocity cooling ↓ · 0.42×). Latest material 8-K events, insider Form-4 transactions, and periodic reports — monitored for change.
✔ Verified against the public SEC EDGAR filing record as of Nov 4, 2026. Source-linked, daily-refreshed.
Material 8-K events — MONOLITHIC POWER SYSTEMS, INC.
8-K disclosures decoded by item code (the material events: agreements, results, control/management changes, impairments, restatements).
| Filed | Event | |
|---|---|---|
| Oct 29, 2026 | Results of Operations (earnings); Departure/Election of Directors or Officers; Financial Statements and Exhibits | ↗ |
| Sep 10, 2026 | Other Events; Financial Statements and Exhibits | ↗ |
| Jul 30, 2026 | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Jun 12, 2026 | Item 5.07; Other Events; Financial Statements and Exhibits | ↗ |
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Insider transactions (Form 4 / 3 / 5)
Recent filings
| Filed | Form | Detail | |
|---|---|---|---|
| Nov 3, 2026 | 10-Q | 10-Q | ↗ |
| Oct 29, 2026 | 3 | PRIMARY DOCUMENT | ↗ |
| Oct 29, 2026 | 8-K | Results of Operations (earnings); Departure/Election of Directors or Officers; Financial Statements and Exhibits | ↗ |
| Sep 30, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Sep 28, 2026 | 144 | ↗ | |
| Sep 10, 2026 | 8-K | Other Events; Financial Statements and Exhibits | ↗ |
| Sep 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 26, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 25, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 24, 2026 | 144 | ↗ | |
| Aug 19, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 17, 2026 | 144 | ↗ | |
| Aug 13, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 11, 2026 | 144 | ↗ | |
| Aug 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 5, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Aug 5, 2026 | 144 | ↗ | |
| Aug 5, 2026 | 10-Q | 10-Q | ↗ |
| Jul 30, 2026 | 8-K | Results of Operations (earnings); Financial Statements and Exhibits | ↗ |
| Jul 28, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jul 17, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jul 15, 2026 | 144 | ↗ | |
| Jul 15, 2026 | SCHEDULE 13G | ↗ | |
| Jul 8, 2026 | SCHEDULE 13G/A | ↗ | |
| Jul 6, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jun 12, 2026 | 8-K | Item 5.07; Other Events; Financial Statements and Exhibits | ↗ |
| Jun 3, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jun 2, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| Jun 1, 2026 | 144 | ↗ | |
| May 29, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| May 29, 2026 | SD | FORM SD | ↗ |
| May 28, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| May 28, 2026 | 144 | ↗ | |
| May 27, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| May 27, 2026 | 4 | PRIMARY DOCUMENT | ↗ |
| May 26, 2026 | 144 | ↗ | |
| May 26, 2026 | 144 | ↗ | |
| May 22, 2026 | 144 | ↗ | |
| May 20, 2026 | 4 | PRIMARY DOCUMENT | ↗ |