Director Elizabeth Mora reported the sale of 300 shares of MKS Instruments Inc common stock on March 2, 2026, according to a recent SEC disclosure. The shares were disposed of at $239.44 apiece, producing a total transaction amount of $71,832.
Following the disposition, Mora directly holds 18,663.394 shares of MKS Instruments. The sale was carried out under a pre-established Rule 10b5-1 trading arrangement that Mora adopted on February 19, 2025.
The stock has experienced substantial appreciation over the prior 12 months, rising roughly 187% year-over-year, and at the time of the filing was trading at a price-to-earnings ratio of 53.7. That valuation metric sits alongside the company’s recent operational results and guidance, which together provide context for both the insider transaction and market behavior.
On the results front, MKS Instruments reported fourth-quarter earnings per share of $2.47, ahead of the consensus estimate of $2.30. Quarterly revenue reached $1.03 billion, topping the consensus projection of $995.32 million and representing a 10.5% increase compared with the year-earlier period.
The company’s commentary accompanying the results included first-quarter revenue guidance that was higher than market expectations. Management highlighted ongoing strength in the Electronics & Packaging segment and noted increased shipments within the Semi division as contributors to the outlook.
Despite the better-than-expected earnings, shares of MKS Instruments fell 7.3% in after-hours trading following the release. In response to the results and guidance, analyst firm Needham raised its price target to $300 from $260 and kept a Buy rating. KeyBanc reiterated an Overweight rating and maintained a $250 price objective, citing the company’s revenue and earnings that exceeded both consensus and their internal projections.
The SEC filing, the earnings release, and subsequent analyst actions together document the sequence of corporate disclosure, insider activity, and market reaction for MKS Instruments. The director sale was executed under a predetermined trading plan, and the company’s reported quarterly performance and guidance prompted both a drop in after-hours share price and upward revisions to analyst price targets.