Bender Mark Steven

EVP & CFOWESTLAKE CORP (WLK) · full profile →Form 4 · filed Mar 2, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$1.8M
Net Open-Market Flow
-$1.8M
Transactions
7
5 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 27, 2026Option exercise(M)6K$65.81$408K68K
Feb 27, 2026Sell(S)421$101.52$43K44K
Feb 27, 2026Sell(S)17K$100.91$1.7M45K
Feb 27, 2026Disposed to issuer(D)13K$98.20$1.2M62K
Feb 27, 2026Option exercise(M)6K$86.54$562K75K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 27, 2026Option exercise(M)6K$00
Feb 27, 2026Option exercise(M)6K$00

Transaction Codes

M
Option exercise / conversion
S
Open-market sale
D
Disposition to the issuer

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0001193125-26-084672) within minutes of acceptance. Every field above traces to the original document. Verify it directly: