Arkolith/Insider Trading/WLK/Form 4

Bender Mark Steven

EVP & CFOWESTLAKE CORP (WLK) · full profile →Form 4 · filed Feb 23, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
4
2 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 20, 2026Tax withholding(F)445$94.10$42K62K
Feb 19, 2026Grant(A)2K—$062K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 20, 2026Grant(A)28K—$028K
Feb 20, 2026Grant(A)8K—$08K

Transaction Codes

F
Shares withheld for taxes
A
Grant / award

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-063686) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML