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SEC EDGARMAY 282 min read$MPWR

DEAN ROBERT W II sold $36K of MPWR

DEAN ROBERT W II (Interim CFO) sold 22 shares of MONOLITHIC POWER SYSTEMS INC (MPWR) at $1649.56 on 2026-05-26.

Original reporting
SEC EDGAR · DEAN ROBERT W II
Published May 28, 2026, 4:00 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Aug 6, 2026, 8:42 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
About AlphAI AI DeskScoring methodologyReport an issue
AlphAI market briefInsider activity
Primary signal
$MPWR
Neutral
medium confidence
Mentioned
$MPWR
Relevance
3/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$MPWRNeutralLow
01

Why it matters

The newest fact is the specific open-market sale: 22 shares at $1,649.56 on 2026-05-26, with post-sale holdings of 5,878 shares.

02

Market read

Traders may note insider selling, but the disclosed dollar amount is small and there is no accompanying operational or guidance catalyst.

03

What to watch

The filing states no pre-arranged 10b5-1 plan, but it does not provide intent, compensation context, or whether other sales occurred around the same time.

Relevance 3/10Novelty 3/10Timing: filed 2026-05-28, transaction dated 2026-05-26

Background

The article is an SEC Form 4 insider transaction disclosure for Monolithic Power Systems, reported by its interim CFO.

Company-level read

Ticker impact

$MPWRNeutralMedium confidence
Context

Monolithic Power Systems insider Dean Robert W II (interim CFO) filed a Form 4 open-market sale of 22 shares at $1,649.56.

Expected impact

Likely negligible near-term impact; any effect would be sentiment-only and limited by the small transaction value.

Evidence & confidence

The filing is primary-source (Form 4) and time-stamped, but the transaction value ($36.3K) and lack of additional company-specific catalysts reduce materiality.

Market effects

Sector

No clear sector read-through from a small, routine insider sale.

Regional

None indicated.

Global

None indicated.

Counterpoint

What could challenge this read

Insider sales can be driven by diversification, taxes, or pre-existing personal liquidity needs, so the signal may be overstated.

Key entities

  • issuer
    Monolithic Power Systems Inc

    Subject of the Form 4 insider transaction disclosure.

  • insider
    Dean Robert W II

    Interim CFO who reported the open-market sale.

Read at source← All news

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

MPWR insider trading history →

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