---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-24-031789"
form_type: "8-K"
ticker: "MPWR"
cik: "0001280452"
company_name: "MONOLITHIC POWER SYSTEMS INC"
filed_at: "2024-10-22T23:59:59+00:00"
generated_at: "2026-05-30T11:30:02.998124+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Monolithic Power Systems board resignations and reclassification

## Summary
- James C. Moyer resigned from Board on Oct 21, 2024; no disagreement with company.
- Board size reduced from 8 to 7; Class II seats reduced to two, Class I increased to two.
- Jeff Zhou reappointed as Class I director (term to 2026 annual meeting) after resigning from Class II.
- Zhou continues on Compensation and Audit Committees; compensation unchanged.

## SEC filing metadata
- accession: 0001437749-24-031789
- form_type: 8-K
- ticker: MPWR
- cik: 0001280452
- company_name: MONOLITHIC POWER SYSTEMS INC
- filed_at: 2024-10-22T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1280452/000143774924031789/0001437749-24-031789-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1280452/000143774924031789/mpwr20241020_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-24-031789
- JSON: https://secwatch.observer/filing/0001437749-24-031789.json
- Plain text: https://secwatch.observer/filing/0001437749-24-031789.txt

## Key facts
- Executive change
  James C. Moyer resigned as Director at MONOLITHIC POWER SYSTEMS INC.
  - Action: resigned
  - Role: Director
  source text: On October 21, 2024, Mr. James C. Moyer resigned from the Board of Directors (the “Board”) of Monolithic Power Systems, Inc. (the “Company”), and as a result, the Board decreased the total number of its authorized directors from eight to seven.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1280452/000143774924031789/0001437749-24-031789-index.htm

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