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$ Value

$1.1M

Shares

4,254

Price

$250

Filed

Feb 23

Insider

Name

Burke Kathleen Flaherty

Title

EVP, GC & Secretary

CIK

0001775435

Roles

Officer

Transaction Details

Transaction Date

2026-02-20

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

53,794

Filing Info

Accession No.

0001049502-26-000032

Form Type

4

Issuer CIK

0001049502

Burke Kathleen Flaherty's History

Date Ticker Type Value
2026-02-20 MKSI $1.1M
2026-02-17 MKSI M
2026-02-17 MKSI M
2026-02-17 MKSI M
2026-02-17 MKSI M
2026-02-17 MKSI M
2026-02-17 MKSI M
2026-02-17 MKSI F $1.4M
2026-02-17 MKSI A
2026-02-17 MKSI M

Other Insiders at MKSI (90d)

Insider Bought Sold Last
COLELLA GERALD G $5.1M 2026-02-24
CANNONE PETER III $323K 2026-02-20
Lee John Tseng-Chung
President & CEO
$7.7M 2026-02-20
Moloney Jacqueline F $278K 2026-03-12
Mora Elizabeth $72K 2026-03-02
Williams John Edward
EVP & GM, PSD
$524K 2026-04-17
McCarthy Michelle M
SVP & Chief Accounting Officer
2026-04-15
McCarthy Michelle M
VP & Chief Accounting Officer
$367K 2026-02-20
Burke Kathleen Flaherty
EVP, GC & Secretary
2026-02-17
Schreiner James Alan
EVP & COO
$1.0M 2026-02-24
Taranto Eric Robert
EVP & GM, VSD
$1.4M 2026-03-06
Henry David Philip
EVP, Global Str Mktg & GM, MSD
$523K 2026-02-20
Mayampurath Ramakumar
EVP & CFO
2026-02-17