---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-003191"
form_type: "8-K"
ticker: "MPWR"
cik: "0001280452"
company_name: "MONOLITHIC POWER SYSTEMS INC"
filed_at: "2026-02-05T23:59:59+00:00"
generated_at: "2026-05-16T04:18:59.457226+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Monolithic Power Systems Q4 revenue $751M, non-GAAP EPS $4.79; dividend raised to $2.00; CFO transition

## Summary
- Q4 revenue $751.2M (+20.8% YoY), non-GAAP EPS $4.79 vs $4.09 YoY.
- FY2025 revenue $2.79B (+26.4% YoY), non-GAAP EPS $17.77 vs $14.12.
- Q1 2026 guide: rev $770-790M, non-GAAP gross margin 55.2-55.8%.
- Quarterly dividend raised 28% to $2.00/share from $1.56; payable Apr 15, record Mar 31.
- CFO Bernie Blegen retiring; Corporate Controller Rob Dean appointed interim CFO.

## SEC filing metadata
- accession: 0001437749-26-003191
- form_type: 8-K
- ticker: MPWR
- cik: 0001280452
- company_name: MONOLITHIC POWER SYSTEMS INC
- filed_at: 2026-02-05T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1280452/000143774926003191/0001437749-26-003191-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1280452/000143774926003191/mpwr20251110_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-003191
- JSON: https://secwatch.observer/filing/0001437749-26-003191.json
- Plain text: https://secwatch.observer/filing/0001437749-26-003191.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.