MPWR MONOLITHIC POWER SYSTEMS INC
Price Chart
Executive Summary
Two MPWR insiders, including the EVP of WW Sales & Marketing, sold a total of $5.81M in open-market sales over a 7-day window. The EVP's $5.80M sale is the dominant transaction, representing ~0.008% of the $72.1B market cap, which is trivial. The Interim CFO's $6K sale is immaterial. The cluster is overwhelmingly driven by a single large sale from a senior executive, but the dollar amount relative to market cap is negligible, and insider sales are generally weak predictors.
Key Financial Metrics
Actionable Insight
The selling is too small relative to market cap to be actionable. Monitor for any upcoming earnings or guidance events that might have prompted the EVP's sale, but treat this cluster as routine portfolio diversification. No immediate trading signal.
Key Facts
- EVP of WW Sales & Marketing sold 3,741 shares for ~$5.80M on May 15, 2026.
- Interim CFO sold 4 shares for ~$6K on May 18, 2026.
- Total cluster value of $5.81M is ~0.008% of MPWR's $72.1B market cap.
- No insider purchases in the cluster; net direction is selling.
- No 10b5-1 plan information provided; sales appear to be open-market.
Financial Impact
Total insider sales of $5.81M represent 0.008% of market cap — immaterial.
Risk Factors
- Insider sales, even by senior executives, are weak predictors of future stock performance.
- No evidence of a material negative catalyst; the cluster is likely liquidity-driven.
Market Snapshot
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MPWR-1779317596018 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
|
Jun 3, 2026
6d ago
|
Insider Cluster
| $1,650.98 $1,476.57 | ▼ −10.56% | ▼ −7.97% | $1,559.18 (−5.56%) |
|
May 29, 2026
11d ago
|
Insider Cluster
| $1,537.90 $1,625.47 | ▲ +5.69% | ▲ +5.55% | $1,559.18 (+1.38%) |
|
May 29, 2026
11d ago
|
Insider Cluster
| $1,537.90 $1,625.47 | ▲ +5.69% | ▲ +5.55% | $1,559.18 (+1.38%) |
|
May 28, 2026
12d ago
|
Insider Cluster
| $1,562.07 $1,537.90 | ▼ −1.55% | ▼ −1.81% | $1,559.18 (−0.18%) |
|
May 27, 2026
13d ago
|
Insider Cluster
| $1,632.36 $1,562.07 | ▼ −4.31% | ▼ −4.55% | $1,559.18 (−4.48%) |
|
May 27, 2026
13d ago
|
Insider Cluster
| $1,632.36 $1,562.07 | ▼ −4.31% | ▼ −4.55% | $1,559.18 (−4.48%) |
|
May 21, 2026
20d ago
|
Insider Cluster
| $1,553.55 $1,588.88 | ▲ +2.27% | ▲ +1.83% | $1,559.18 (+0.36%) |
|
May 20, 2026
20d ago
|
Insider Cluster
| $1,553.55 $1,588.88 | ▲ +2.27% | ▲ +1.83% | $1,559.18 (+0.36%) |
|
May 8, 2026
4w ago
|
Insider Cluster
| $1,653.69 $1,592.75 | ▼ −3.69% | ▼ −3.55% | $1,559.18 (−5.72%) |
|
May 8, 2026
4w ago
|
Insider Cluster
| $1,653.69 $1,592.75 | ▼ −3.69% | ▼ −3.55% | $1,559.18 (−5.72%) |
US Market Status
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