Scott Thomas Szwejbka - 17 Feb 2026 Form 4 Insider Report for WESTLAKE CORP (WLK)

Role
SVP, HIP Segment Head
Signature
Scott T. Szwejbka by J Feng POA
Issuer symbol
WLK
Transactions as of
17 Feb 2026
Net transactions value
-$29,190
Form type
4
Filing time
19 Feb 2026, 15:20:14 UTC
Previous filing
03 Oct 2025
Next filing
23 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Szwejbka Scott Thomas SVP, HIP Segment Head 2801 POST OAK BLVD., SUITE 600, HOUSTON Scott T. Szwejbka by J Feng POA 19 Feb 2026 0002064540

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WLK Common Stock Options Exercise $0 +977 +7.6% $0.000000 13,794 17 Feb 2026 Direct F1
transaction WLK Common Stock Tax liability $29,190 -295 -2.1% $98.95 13,499 18 Feb 2026 Direct F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction WLK Restricted Stock Units Options Exercise $0 -977 -100% $0.000000 0 17 Feb 2026 Common Stock 977 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Restricted stock units ("RSUs") convert into the Issuer's common stock on a one-for-one basis.
F2 On February 17, 2023, the reporting person was granted 977 RSUs vesting on the third anniversay of the grant date.
F3 Shares otherwise issuable were withheld to satisfy tax obligations arising out of the vesting of the reporting persons RSUs.