James Alan Schreiner

Companies

• MKS INCChief operating officer Jan 2, 2020 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• MKMKS INC MKSI19,201 shares²$4.3M at $225.48Jun 12, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Jun 12, 2026Sold 217 shares at $347.00 of MKS INC²
• Jun 12, 2026Sold 812 shares at $346.41 of MKS INC²
• Jun 12, 2026Sold 2,471 shares at $345.52 of MKS INC²
• Jun 10, 2026Sold 781 shares at $317.42 of MKS INC³
• Feb 24, 2026Sold 4,100 shares at $255.00 of MKS INC⁴
• Feb 17, 2026Shares withheld for tax 4,344 shares at $260.74 of MKS INC⁵
• Feb 17, 2026Exercised options 1,944 shares of MKS INC⁵
• Feb 17, 2026Exercised options 1,741 shares of MKS INC⁵
• Feb 17, 2026Exercised options 1,211 shares of MKS INC⁵
• Feb 17, 2026Exercised options 432 shares of MKS INC⁵
• Feb 17, 2026Exercised options 1,330 shares of MKS INC⁵
• Feb 17, 2026Exercised options 2,567 shares of MKS INC⁵
• Oct 22, 2025Sold 711 shares at $138.68 of MKS INC⁶
• Sep 18, 2025Sold 838 shares at $124.00 of MKS INC⁷
• Aug 18, 2025Shares withheld for tax 1,249 shares at $100.22 of MKS INC⁸
• Aug 18, 2025Exercised options 2,641 shares of MKS INC⁸
• Jul 7, 2025Sold 957 shares at $102.44 of MKS INC⁹
• Feb 18, 2025Shares withheld for tax 3,648 shares at $103.67 of MKS INC¹⁰
• Feb 18, 2025Exercised options 1,211 shares of MKS INC¹⁰
• Feb 18, 2025Exercised options 432 shares of MKS INC¹⁰
• Feb 18, 2025Exercised options 1,329 shares of MKS INC¹⁰
• Feb 18, 2025Exercised options 2,566 shares of MKS INC¹⁰
• Feb 18, 2025Exercised options 1,173 shares of MKS INC¹⁰
• Feb 18, 2025Exercised options 1,630 shares of MKS INC¹⁰
• Aug 19, 2024Shares withheld for tax 1,873 shares at $119.09 of MKS INC¹¹