The insider selling volume is immaterial. Monitor Q2 2026 results for any change in fundamentals; the cluster does not warrant defensive action.
Price Chart
Executive Summary
Three MKSI insiders sold shares totaling $2.62M over one week following strong Q1 earnings. The sales represent just 0.012% of market cap and include the EVP & GC and an EVP. Director grants (non-cash) also occurred. Given the trivial dollar amount relative to a $21.2B market cap and the proximity to a well-received earnings beat, the cluster appears to be routine profit-taking or liquidity-driven, not a bearish signal.
Key Financial Metrics
Key Facts
- Total insider sales of $2.62M are 0.012% of MKSI's $21.2B market cap
- Two EVPs sold: Burke Kathleen Flaherty (EVP, GC & Secretary) sold $1.39M, Taranto Eric Robert (EVP & GM, VSD) sold $911K
- Director Moloney sold $312K; seven directors received non-cash grants totaling 781 shares each
- Sales occurred within 9 days after Q1 2026 earnings beat: revenue $1.078B (at high end), Non-GAAP EPS $2.30 (above guidance)
Financial Impact
Total insider sales of $2.62M, negligible relative to $21.2B market cap
Risk Factors
- Convertible notes reclassified to short-term debt may create overhang if conversion occurs
- Future insider selling acceleration could signal caution, but current pattern is routine
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 1 SEC document filed with EDGAR.
| Document | Accession Number |
|---|---|
| CLUSTER Data (Synthetic) | cluster-MKSI-1778853906044 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 1, 2026 4w ago | 144 | $246.44 $265.36 | ▲ +7.68% | ▲ +7.36% | $282.86 (+14.78%) |
Jul 13, 2026 11w ago | Press Release | $352.03 $290.59 | ▼ −17.45% | ▼ −20.64% | $282.86 (−19.65%) |
Jun 8, 2026 16w ago | Insider Cluster | $312.09 $368.06 | ▲ +17.93% | ▲ +16.30% | $282.86 (−9.37%) |
Jun 2, 2026 17w ago | Insider Cluster | $329.66 $411.05 | ▲ +24.69% | ▲ +26.51% | $282.86 (−14.20%) |
Jun 2, 2026 17w ago | Insider Cluster | $329.66 $411.05 | ▲ +24.69% | ▲ +26.51% | $282.86 (−14.20%) |
May 28, 2026 18w ago | Insider Cluster | $323.41 $410.31 | ▲ +26.87% | ▲ +29.56% | $282.86 (−12.54%) |
May 28, 2026 18w ago | Insider Cluster | $323.41 $410.31 | ▲ +26.87% | ▲ +29.56% | $282.86 (−12.54%) |
May 26, 2026 18w ago | Insider Cluster | $332.43 $389.17 | ▲ +17.07% | ▲ +19.33% | $282.86 (−14.91%) |
May 26, 2026 18w ago | Insider Cluster | $332.43 $389.17 | ▲ +17.07% | ▲ +19.33% | $282.86 (−14.91%) |
May 19, 2026 19w ago | Insider Cluster | $293.92 $366.31 | ▲ +24.63% | ▲ +22.37% | $282.86 (−3.76%) |
US Market Status
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