Arkolith/Insider Trading/MKSI/Form 4

McCarthy Michelle M

SVP & Chief Accounting OfficerMKS INC (MKSI) · full profile →Form 4 · filed Apr 16, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
8
4 non-derivative · 4 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Apr 15, 2026Option exercise(M)968——968
Apr 15, 2026Option exercise(M)1K——2K
Apr 15, 2026Option exercise(M)2K——4K
Apr 15, 2026Tax withholding(F)1K$274.15$377K2K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Apr 15, 2026Grant(A)2K——11K
Apr 15, 2026Option exercise(M)968——10K
Apr 15, 2026Option exercise(M)1K——9K
Apr 15, 2026Option exercise(M)2K——7K

Transaction Codes

M
Option exercise / conversion
F
Shares withheld for taxes
A
Grant / award

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001049502-26-000059) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML