---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-21-017661"
form_type: "8-K"
ticker: "MPWR"
cik: "0001280452"
company_name: "MONOLITHIC POWER SYSTEMS INC"
filed_at: "2021-07-27T23:59:59+00:00"
generated_at: "2026-06-30T02:06:01.904713+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.78
calibrated_materiality_score: 0.78
confidence: "high"
source: SEC EDGAR
---

# Monolithic Power Systems Q2 revenue $293.3M (+57.5% YoY); non-GAAP EPS $1.81; guides Q3 revenue $309-321M

## Summary
- GAAP net income $55.2M ($1.16 diluted EPS) vs $30.2M ($0.64) in Q2 2020; non-GAAP net income $86.5M ($1.81) vs $50.6M ($1.08).
- Revenue by end market: Computing & Storage $87.7M, Automotive $48.7M (+174% YoY), Industrial $43.3M, Consumer $76.1M.
- Q3 2021 revenue guidance $309-321M; GAAP gross margin 57.3-57.9% including $4M litigation settlement benefit.
- Non-GAAP gross margin excluding one-time benefit expected 56.3-56.9%; stock-based comp expense $31.2-33.2M.
- CEO Michael Hsing cited planned capacity expansion and more parts in production as growth drivers.

## SEC filing metadata
- accession: 0001437749-21-017661
- form_type: 8-K
- ticker: MPWR
- cik: 0001280452
- company_name: MONOLITHIC POWER SYSTEMS INC
- filed_at: 2021-07-27T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.78
- calibrated_materiality_score: 0.78
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1280452/000143774921017661/0001437749-21-017661-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1280452/000143774921017661/mpwr20210724_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-21-017661
- JSON: https://secwatch.observer/filing/0001437749-21-017661.json
- Plain text: https://secwatch.observer/filing/0001437749-21-017661.txt

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