Arkolith/Insider Trading/WLK/Form 4

Chao Albert

Executive Chairman, DirectorWESTLAKE CORP (WLK) · full profile →Form 4 · filed Dec 23, 2025
Net Selling
Open-Market Buys
$0
Open-Market Sells
$3.0M
Net Open-Market Flow
-$3.0M
Transactions
5
4 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Dec 22, 2025Sell(S)521$74.44$39K628K
Dec 22, 2025Sell(S)10K$72.82$707K659K
Dec 22, 2025Option exercise(M)82K$44.42$3.6M669K
Dec 22, 2025Sell(S)31K$73.80$2.3M628K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Dec 22, 2025Option exercise(M)82K—$00

Transaction Codes

S
Open-market sale
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-25-329926) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML