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▼ SELL

$ Value

$1.8M

Shares

16,413

Price

$113

Filed

Mar 30

Insider

Name

Bender Mark Steven

Title

EVP & CFO

CIK

0001330417

Roles

Officer

Transaction Details

Transaction Date

2026-03-27

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

28,015

Footnotes

Weighted average price. These shares were sold in multiple transactions at prices ranging from $112.33 to $112.99 inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

Filing Info

Accession No.

0001193125-26-131706

Form Type

4

Issuer CIK

0001262823

Bender Mark Steven's History

Date Ticker Type Value
2026-03-27 WLK $1.8M

Other Insiders at WLK (90d)

Insider Bought Sold Last
Buesinger Robert F.
EVP, PEM Segment Head
$461K 2026-03-27
Powers Brian John
SVP, PEM Segment Head
2026-04-02