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▼ SELL

$ Value

$461K

Shares

4,000

Price

$115

Filed

Mar 31

Insider

Name

Buesinger Robert F.

Title

EVP, PEM Segment Head

CIK

0001488587

Roles

Officer

Transaction Details

Transaction Date

2026-03-27

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

34,482

Filing Info

Accession No.

0001193125-26-133508

Form Type

4

Issuer CIK

0001262823

Buesinger Robert F.'s History

Date Ticker Type Value
2026-03-27 WLK $461K
2025-05-27 WLK $6K
2025-04-22 WLK $8K

Other Insiders at WLK (90d)

Insider Bought Sold Last
Bender Mark Steven
EVP & CFO
$1.8M 2026-03-27
Powers Brian John
SVP, PEM Segment Head
2026-04-02