The CEO and top sales executive selling simultaneously is a pattern to flag, but the dollar amount is too small to move a $72B stock. Monitor for any upcoming earnings pre-announcement or guidance change — the cluster may reflect personal portfolio rebalancing rather than a bearish signal. The historical win rate on MPWR reports is 100%, but this cluster is too small to act on.
Price Chart
Executive Summary
CEO Michael Hsing and EVP Maurice Sciammas sold a combined $10.8M in MPWR stock within a week, representing ~0.015% of the $72.1B market cap. The CEO's $5M sale is the largest insider disposition in the trailing 30-day period ($19M total). While the dollar amount is trivial relative to market cap, the cluster involves the two most senior executives selling simultaneously, which warrants attention.
Key Financial Metrics
Key Facts
- CEO Michael Hsing sold 3,424 shares at $1,462.61 for $5.01M on 2026-05-18
- EVP Maurice Sciammas sold 3,741 shares at $1,550.36 for $5.80M on 2026-05-15
- Interim CFO Robert Dean sold 4 shares at $1,563.28 for $6K on 2026-05-18
- Total cluster value: $10.81M, representing ~0.015% of $72.1B market cap
- Trailing 30-day insider activity: 8 sells totaling $19.0M
- All sales are open-market (code S) — no 10b5-1 plan designation noted
Financial Impact
$10.81M in insider sales, 0.015% of market cap — immaterial relative to company size
Risk Factors
- CEO selling $5M could signal personal bearishness, but amount is trivial relative to his likely holdings
- No 10b5-1 plan disclosed — sales may be opportunistic or liquidity-driven
- Cluster occurs after a strong stock run (MPWR up ~19% in prior month per historical data)
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MPWR-1779322256425 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 10, 2026 21d ago | Press Release | $1,234.46 $1,217.80 | ▼ −1.35% | ▼ −1.13% | $1,427.84 (+15.67%) |
Aug 26, 2026 5w ago | Insider Cluster | $1,311.08 $1,213.65 | ▼ −7.43% | ▼ −7.70% | $1,427.84 (+8.91%) |
Aug 26, 2026 5w ago | Insider Cluster | $1,311.08 $1,219.36 | ▼ −7.00% | ▼ −6.23% | $1,427.84 (+8.91%) |
Aug 24, 2026 5w ago | Court Ruling | $1,285.03 $1,261.99 | ▼ −1.79% | ▼ −2.26% | $1,427.84 (+11.11%) |
Aug 13, 2026 7w ago | Insider Cluster | $1,362.55 $1,310.60 | ▼ −3.81% | ▼ −1.85% | $1,427.84 (+4.79%) |
Aug 6, 2026 8w ago | Insider Cluster | $1,350.21 $1,358.05 | ▲ +0.58% | ▼ −0.63% | $1,427.84 (+5.75%) |
Jul 30, 2026 9w ago | 8-K | $1,426.03 $1,391.91 | ▼ −2.39% | ▼ −5.90% | $1,427.84 (+0.13%) |
Jun 12, 2026 15w ago | Press Release | $1,652.29 $1,537.88 | ▼ −6.92% | ▼ −5.54% | $1,427.84 (−13.58%) |
Jun 3, 2026 17w ago | Insider Cluster | $1,650.98 $1,589.55 | ▼ −3.72% | ▼ −1.17% | $1,427.84 (−13.52%) |
May 29, 2026 17w ago | Insider Cluster | $1,537.90 $1,481.05 | ▼ −3.70% | ▼ −0.95% | $1,427.84 (−7.16%) |
US Market Status
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