---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-22-010441"
form_type: "8-K"
ticker: "MPWR"
cik: "0001280452"
company_name: "MONOLITHIC POWER SYSTEMS INC"
filed_at: "2022-05-02T23:59:59+00:00"
generated_at: "2026-06-26T01:56:57.208136+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# MPS Q1 revenue $377.7M (+48% YoY); non-GAAP EPS $2.45 vs $1.46

## Summary
- GAAP net income $79.6M ($1.65 diluted EPS) vs $45.4M ($0.95) a year ago.
- Non-GAAP net income $118.3M ($2.45) vs $69.5M ($1.46); gross margin expanded 2.5pts.
- All end markets grew YoY; Storage & Computing $96.6M (+88%) and Enterprise Data $42.5M (+163%) led.
- Q2 guidance: revenue $420M-$440M, GAAP gross margin 58.4%-59.0%.
- Non-GAAP gross margin expected 58.7%-59.3%; stock-based comp ~$44-$46M.

## SEC filing metadata
- accession: 0001437749-22-010441
- form_type: 8-K
- ticker: MPWR
- cik: 0001280452
- company_name: MONOLITHIC POWER SYSTEMS INC
- filed_at: 2022-05-02T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1280452/000143774922010441/0001437749-22-010441-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1280452/000143774922010441/mpwr20220428_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-22-010441
- JSON: https://secwatch.observer/filing/0001437749-22-010441.json
- Plain text: https://secwatch.observer/filing/0001437749-22-010441.txt

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