Mks Instruments INC Form 4 insider transactions

MKS Inc.'s EVP & GM, Eric Taranto, sold 1,452.73 shares of common stock for $247.55 per share on February 20, 2026, under a Rule 10b5-1 plan.

MKS Inc. EVP David Philip Henry executed a pre-planned sale of 2,000 common shares at $261.5601 per share.

MKS Inc.'s VP & Chief Accounting Officer, Michelle M. McCarthy, sold 1,466 shares of common stock for approximately $366,000 under a pre-arranged 10b5-1 trading plan.

MKS Inc. Director Jacqueline F. Moloney sold 829 shares of common stock for $247.55 per share under a pre-arranged trading plan.

MKS Inc.'s EVP & GM, John Edward Williams, reported the sale of 2,042.625 shares of common stock for a weighted average price of $256.4075 per share.

MKS Instruments' EVP, GC & Secretary, Kathleen Flaherty Burke, reported the sale of 4,254 shares of common stock for $250 per share.

MKS Inc.'s President and CEO, John Tseng-Chung Lee, sold a total of 30,000 shares of common stock for approximately $7.7 million under a pre-arranged 10b5-1 trading plan.

MKS Inc. EVP & GM Eric Taranto received 3,504 performance-based restricted stock units, vesting annually starting February 15, 2026.

MKS Inc. EVP David Philip Henry received 5,521.949 performance-based restricted stock units, vesting annually starting February 15, 2026.

MKS Inc.'s EVP & COO, James Alan Schreiner, acquired 5,226.759 performance-based Restricted Stock Units, vesting annually starting February 15, 2026.

MKS Inc. EVP & GM, John Edward Williams, was awarded 2,973.357 performance-based Restricted Stock Units, vesting annually starting February 15, 2026.

MKS Inc.'s EVP, GC & Secretary, Kathleen Flaherty Burke, was awarded 7,008.628 performance-based Restricted Stock Units, with vesting commencing February 15, 2026.

MKS Inc.'s EVP & CFO, Ramakumar Mayampurath, acquired 8,877.596 performance-based restricted stock units, vesting annually starting February 15, 2026.

MKS Inc.'s President & CEO, John Tseng-Chung Lee, acquired 50,971.84 restricted stock units, increasing his beneficial ownership.

MKS Inc. Director Elizabeth Mora sold 300 shares of common stock for $158.81 per share, executed under a pre-arranged Rule 10b5-1 trading plan.

MKS Inc.'s EVP & CFO, Ramakumar Mayampurath, reported the vesting of 8,295 restricted stock units and the subsequent withholding of 2,628 shares for tax obligations.

An MKS Inc. executive reported the vesting of restricted stock units and a subsequent sale of shares to cover tax obligations.

MKS Inc. President & CEO, John Tseng-Chung Lee, acquired common stock through RSU vesting and subsequently sold shares to cover tax obligations.

James Alan Schreiner, EVP & COO of MKS Inc., sold 711 shares of common stock at $138.68 per share, executed under a Rule 10b5-1 trading plan.

MKS Inc. Director Jacqueline F. Moloney sold 300 shares of common stock for $122.14 per share on October 1, 2025, under a pre-arranged 10b5-1 trading plan.

MKS Inc.'s EVP & COO, James Alan Schreiner, sold 838 shares of common stock for $124 per share on September 18, 2025, under a pre-arranged 10b5-1 trading plan.

MKS Inc. EVP David Philip Henry sold 5,000 shares of common stock at $130 per share, executed under a pre-arranged 10b5-1 trading plan.

MKS Inc. Director Elizabeth Mora sold 300 shares of common stock for $99.85 per share, as part of a pre-arranged 10b5-1 trading plan.

MKS Inc. EVP & COO James Alan Schreiner is set to acquire shares through RSU vesting and simultaneously sell a portion to cover tax obligations.

An MKS Inc. executive reported the vesting of Restricted Stock Units and subsequent share withholding for tax obligations.

MKS Inc.'s EVP & COO, James Alan Schreiner, was granted 1,329.787 Restricted Stock Units, vesting annually starting February 2026.

MKS Inc. Director Jacqueline F. Moloney sold 300 shares of common stock for $92.1 per share on August 1, 2025, under a pre-arranged Rule 10b5-1 trading plan.

MKS Inc.'s EVP & COO, James Alan Schreiner, sold 957 shares of common stock for $102.44 per share on July 7, 2025, as part of a pre-arranged 10b5-1 trading plan.

MKS Inc. EVP of Operations & Corporate Marketing, David Philip Henry, sold 2,000 shares of common stock for $105 per share under a pre-arranged 10b5-1 trading plan.

MKS INC Director Elizabeth Mora sold 300 shares of common stock for $81.78 per share on June 2, 2025, as part of a pre-established Rule 10b5-1 trading plan.