Kathleen Flaherty Burke

MKSI

Kathleen Flaherty Burke serves as officer: EVP, GC & Secretary at MKS Inc. (MKSI). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

5 trades

$5.59M

Net Position

Net Seller

$5.59M

Companies Traded

MKSI

Active Period

Aug 2023 – Feb 2026

5 total trades

Most Recent

Sell MKSI

Feb 23, 2026 · $1.06M

Kathleen Flaherty Burke's Insider Trading at MKS Inc. (MKSI)

Buys

0 · $0.00

Sells

5 · $5.59M

Total Shares Bought

Total Shares Sold

32,800

MKSI Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 23, 2026↗	Sell	4,254	$250.00	$1.06M	53,794.5
Feb 20, 2026↗	Sell	4,254	$250.00	$1.06M	0
Feb 17, 2026↗	Sell	5,318	$260.73	$1.39M	0
Mar 4, 2024↗	Sell	7,411	$122.89	$910.7K	42,999
Aug 8, 2023↗	Sell	11,563	$101.23	$1.17M	48,114.7