MPWR MONOLITHIC POWER SYSTEMS INC
Price Chart
Executive Summary
Four MPWR insiders sold a total of $13.76M in open-market sales over a 7-day window, led by EVP & General Counsel Tseng Saria ($12.86M). The cluster is dominated by a single large sale from a senior executive, with three smaller sales from other insiders. At 0.017% of the $79.8B market cap, the total value is trivial and does not indicate material insider concern.
Key Financial Metrics
Actionable Insight
This cluster is routine and non-informative. The $12.86M sale by EVP Tseng is large in absolute terms but negligible relative to the $79.8B market cap. No bearish signal — treat as noise. Monitor next 10-Q for any fundamental changes, but no action warranted.
Key Facts
- Four insiders sold shares totaling $13.76M in a 7-day window (May 25–June 1, 2026)
- EVP & General Counsel Tseng Saria sold $12.86M (7.6K shares at $1,700), representing 93% of the cluster value
- Three other insiders sold small amounts: EVP Sciammas $46K, Interim CFO Dean $36K, Director Zhou $816K
- Total cluster value is 0.017% of MPWR's $79.8B market cap — well below the 0.1% materiality threshold
- All trades are open-market sales (code S); no purchases in the cluster
- Prior 30-day insider activity: 8 sells totaling $32.5M, consistent with routine selling pattern
Financial Impact
Total insider sales of $13.76M represent 0.017% of market cap — immaterial
Risk Factors
- Insider selling at elevated levels could indicate personal diversification, not fundamental concern
- No purchases in the cluster — consistent with typical executive selling patterns
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MPWR-1780522337889 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 12, 2026
2d ago
|
Press Release
| $1,576.88 awaiting T+1 | awaiting T+1 | — | $1,577.32 (+0.03%) |
|
Jun 3, 2026
11d ago
|
Insider Cluster
| $1,650.98 $1,476.57 | ▼ −10.56% | ▼ −7.97% | $1,577.32 (−4.46%) |
|
May 29, 2026
16d ago
|
Insider Cluster
| $1,537.90 $1,625.47 | ▲ +5.69% | ▲ +5.55% | $1,577.32 (+2.56%) |
|
May 29, 2026
16d ago
|
Insider Cluster
| $1,537.90 $1,625.47 | ▲ +5.69% | ▲ +5.55% | $1,577.32 (+2.56%) |
|
May 28, 2026
17d ago
|
Insider Cluster
| $1,562.07 $1,537.90 | ▼ −1.55% | ▼ −1.81% | $1,577.32 (+0.98%) |
|
May 27, 2026
18d ago
|
Insider Cluster
| $1,632.36 $1,562.07 | ▼ −4.31% | ▼ −4.55% | $1,577.32 (−3.37%) |
|
May 27, 2026
18d ago
|
Insider Cluster
| $1,632.36 $1,562.07 | ▼ −4.31% | ▼ −4.55% | $1,577.32 (−3.37%) |
|
May 21, 2026
25d ago
|
Insider Cluster
| $1,553.55 $1,588.88 | ▲ +2.27% | ▲ +1.83% | $1,577.32 (+1.53%) |
|
May 20, 2026
25d ago
|
Insider Cluster
| $1,553.55 $1,588.88 | ▲ +2.27% | ▲ +1.83% | $1,577.32 (+1.53%) |
|
May 8, 2026
5w ago
|
Insider Cluster
| $1,653.69 $1,592.75 | ▼ −3.69% | ▼ −3.55% | $1,577.32 (−4.62%) |
US Market Status
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