MKSI- Mks Inc.

Name: Mks Inc. Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

Mks Inc. (MKSI) has 12 insiders with recent SEC Form 4 filings, including 0 buys and 12 sells. MKSI is classified in the Electronic Equipment, Instruments & Components industry within the Information Technology sector.

Insider Ownership

Role	Insider	Shares	Value	30d
CEO	Lee John Tseng-Chung	144.7K	$45.30M	-
VP	Burke Kathleen Flaherty	53.8K	$16.84M	-
Dir	Colella Gerald G	40.0K	$12.53M	-
COO	Schreiner James Alan	19.2K	$6.01M	-
Dir	Mora Elizabeth	19.1K	$5.99M	-

Activity

Buys and sells only

Transactions

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Aug 3, 2026	Williams John Edward	EVP &Gm, Psd	Sell	457	$288.31	$131,757.67	-10.0%	-	-
Jun 12, 2026	Schreiner James Alan	EVP &COO	Sell	3,500	$345.82	$1,210,370.07	-5.6%	-	-
Jun 10, 2026	Schreiner James Alan	EVP &COO	Sell	781	$317.42	$247,905.02	-3.3%	-	-
Jun 5, 2026	McCarthy Michelle M73	SVP &Chief Accounting Officer	Sell	2,434	$315.23	$767,269.82	-99.9%	-	-
Jun 1, 2026	Mora Elizabeth57	Director	Sell	300	$318.02	$95,406.00	-1.5%	-	-
Jun 1, 2026	Henry David Philip54	EVP, Global Str Mktg &Gm, Msd	Sell	6,000	$314.43	$1,886,583.00	-36.5%	-	-
May 22, 2026	Lee John Tseng-Chung	President &CEO	Sell	10,000	$315.48	$3,154,800.00	-6.5%	-	-
May 22, 2026	Mayampurath Ramakumar	EVP &CFO	Sell	8,810	$315.48	$2,779,378.80	-100.0%	-	-
May 18, 2026	Cannone Peter III	Director	Sell	1,350	$303.40	$409,590.14	-14.8%	-	-
May 13, 2026	Moloney Jacqueline F53	Director	Sell	1,400	$318.99	$446,586.00	-12.5%	-	-

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Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC