Arkolith/Insider Trading/WLK/Form 4

Chao John Tsung-chen

DirectorWESTLAKE 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
5
2 non-derivative · 3 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 20, 2026Tax withholding(F)91$94.10$9K8K
Feb 19, 2026Grant(A)213—$08K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 20, 2026Grant(A)2K—$02K
Feb 20, 2026Grant(A)1K—$01K
Feb 20, 2026Grant(A)4K—$04K

Transaction Codes

F
Shares withheld for taxes
A
Grant / award

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-063669) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML