Burke Kathleen Flaherty - Insider Non-Derivative Transactions at MKS INC (MKSI) - (SEC)

Updated on January 3, 2026.

According to recent SEC insider information filed on Oct 31, 2025, Burke Kathleen Flaherty's relationship to MKS INC (MKSI) is Officer (EVP, GC & Secretary), and currently has 51,851.51 shares of Common Stock.

The chart below shows the number of shares owned, and the table shows the recent insider transactions.

You can see similar information for other MKSI insiders.

Related Topics: SEC Topic List.

Data Source: SEC.

Burke Kathleen Flaherty - Insider Non-Derivative Transactions of MKSI Common Stock

Burke Kathleen Flaherty - Insider Non-Derivative Transactions at MKSI

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Date	Transaction	No. of Shares	Price Per Share	Shares Owned After Transactions
Nov 1, 2025	F -- (Common Stock)	777	143.71	51074.51
Nov 1, 2025	M -- (Common Stock)	158	0	51232.51
Nov 1, 2025	M -- (Common Stock)	52	0	51284.51
Nov 1, 2025	M -- (Common Stock)	82	0	51366.51
Nov 1, 2025	M -- (Common Stock)	144	0	51510.51
Nov 1, 2025	M -- (Common Stock)	341	0	51851.51
Feb 19, 2025	M -- (Common Stock)	2286.76	0	45533.32
Feb 19, 2025	M -- (Common Stock)	1645.08	0	47178.39
Feb 19, 2025	M -- (Common Stock)	3608	0	50786.39
Feb 19, 2025	F -- (Common Stock)	3970	103.67	50922.42
Feb 19, 2025	M -- (Common Stock)	1870	0	52656.39
Feb 19, 2025	M -- (Common Stock)	588.03	0	53244.42
Feb 19, 2025	M -- (Common Stock)	1648	0	54892.42