Arkolith/Insider Trading/MKSI/Form 4

Williams John Edward

EVP & GM, PSDMKS INC (MKSI) · full profile →Form 4 · filed Feb 18, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
10
5 non-derivative · 5 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 17, 2026Option exercise(M)841——5K
Feb 17, 2026Option exercise(M)991——6K
Feb 17, 2026Option exercise(M)1K——7K
Feb 17, 2026Tax withholding(F)1K$260.74$312K6K
Feb 17, 2026Option exercise(M)300——4K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 17, 2026Option exercise(M)1K——9K
Feb 17, 2026Option exercise(M)991——10K
Feb 17, 2026Option exercise(M)841——11K
Feb 17, 2026Grant(A)1K——12K
Feb 17, 2026Option exercise(M)300——11K

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 0001049502-26-000022) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML