Burke Kathleen Flaherty

EVP, GC & Secretary at MKS INC · on record since May 9, 2019

Insider trading activity of Burke Kathleen Flaherty

Transactions on record: 129; since Oct 30, 2019

Open-market buys: 0

Open-market sells: 6; $5.7M

Companies traded: 1; last filing May 12, 2026

Figures computed from official regulatory filings — .

Companies where Burke Kathleen Flaherty has traded

MKS INC129 tx · $10.2M · May 12, 2026

Track record of Burke Kathleen Flaherty

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Burke Kathleen Flaherty

Co-insiders of Burke Kathleen Flaherty

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
MKS INCListing on record	May 12, 2026	Sell	-4,355	319.94 USD	$1.4M	Unusual size	SEC
MKS INCListing on record	Feb 23, 2026	Sell	-4,254	250.00 USD	$1.1M		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-3,450.86	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-1,787.74	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Other	-5,317.8	260.74 USD	$1.4M	Unusual size	SEC
MKS INCListing on record	Feb 18, 2026	AwardD (derivative)	3,327.76	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	1,576	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	2,493	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	1,787.74	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-2,336	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	2,336	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-1,576	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-562.54	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	562.54	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-2,493	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	3,450.86	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 9, 2026	AwardD (derivative)	7,008.63	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	52	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	82	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Other	-777	143.71 USD	$111.7K		SEC
MKS INCListing on record	Nov 4, 2025	ExerciseD (derivative)	-52	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	144	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	ExerciseD (derivative)	-82	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	ExerciseD (derivative)	-144	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	341	—	n/a (No price was disclosed in the filing)		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
MKS INCListing on record	May 12, 2026	Sell	-4,355	319.94 USD	$1.4M	Unusual size	SEC
MKS INCListing on record	Feb 23, 2026	Sell	-4,254	250.00 USD	$1.1M		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-3,450.86	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-1,787.74	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Other	-5,317.8	260.74 USD	$1.4M	Unusual size	SEC
MKS INCListing on record	Feb 18, 2026	AwardD (derivative)	3,327.76	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	1,576	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	2,493	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	1,787.74	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-2,336	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	2,336	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-1,576	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-562.54	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	562.54	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	ExerciseD (derivative)	-2,493	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 18, 2026	Exercise	3,450.86	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Feb 9, 2026	AwardD (derivative)	7,008.63	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	52	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	82	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Other	-777	143.71 USD	$111.7K		SEC
MKS INCListing on record	Nov 4, 2025	ExerciseD (derivative)	-52	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	144	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	ExerciseD (derivative)	-82	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	ExerciseD (derivative)	-144	—	n/a (No price was disclosed in the filing)		SEC
MKS INCListing on record	Nov 4, 2025	Exercise	341	—	n/a (No price was disclosed in the filing)		SEC