Eric Robert Taranto, who serves as Executive Vice President and General Manager of the Vacuum & Surface Division at MKS Inc (NASDAQ: MKSI), sold 4,567.879 shares of the company’s common stock on March 6, 2026, for aggregate proceeds of $1,007,317, according to a Form 4 filed with the Securities and Exchange Commission.
The sale was carried out across multiple trades at prices ranging from $220.3701 to $220.780 per share. After the disposals, Taranto’s direct ownership stands at 15,444.7614 shares of MKS Inc common stock, as reported in the filing.
Valuation note and research access
InvestingPro analysis cited in the filing materials indicates MKSI currently appears overvalued relative to its Fair Value assessment. The filing references a Pro Research Report that provides additional detail for MKSI as well as more than 1,400 other U.S. equities for investors who seek deeper analysis.
Recent operating and financial performance
MKS Instruments posted fourth-quarter adjusted earnings per share of $2.47, marginally above the consensus estimate of $2.46. Revenue for the quarter came in at $1.03 billion, beating the anticipated $1.022 billion and marking a 10.5% increase from the year-ago quarter.
The company also provided first-quarter revenue guidance that exceeded expectations, citing continued strength in its Electronics & Packaging segment and higher shipments in its Semiconductor division. Those operational drivers underpinned the more upbeat outlook.
Analyst responses and market reaction
Following the earnings release and guidance, Needham raised its price target on MKS Instruments to $300 from $260 while keeping a Buy rating. KeyBanc reiterated an Overweight rating with a $250 price target. Despite the favorable guidance and analyst moves, MKS Instruments’ shares fell 7.3% in after-hours trading.
Context and takeaway
The insider sale by a senior executive comes amid a quarter that exceeded consensus on both earnings and revenue and a forward revenue outlook that analysts described as robust. The sale was disclosed via a standard SEC Form 4 filing, and independent analysis noted the stock’s valuation appeared stretched relative to a Fair Value metric. Market response to the quarterly update was mixed: analysts moved to lift targets and reaffirm ratings while the stock declined in after-hours trading.