WLK Insider Trading Activity and SEC Form 4 Filings
Trump's trades in WLK
From his financial disclosures
-
0 purchases
$2K+
2 sales
Sale
Jul 27, 2026
Reported 57d later
$1K - $15K
Sale
Jun 24, 2026
Reported 59d later
$1K - $15K
Many orders in these accounts are placed by the account manager.
WLK insider trading summary
Over the past 12 months, insiders at Westlake Corp (WLK) reported 8 sales worth $8.3M by 3 insiders and no open-market purchases on SEC Form 4. Net insider selling was $8.3M.
Latest WLK insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Aug 11, 2026 | Albert Chao | Executive Chairman | Sell | $2.5M (31,384 @ $80.42) |
| Aug 11, 2026 | Albert Chao | Executive Chairman | Sell | $597K (7,489 @ $79.70) |
| Mar 27, 2026 | Robert F. Buesinger | EVP, PEM Segment Head | Sell | $461K (4,000 @ $115.25) |
| Feb 27, 2026 | Mark Steven Bender | EVP & CFO | Sell | $1.7M (16,988 @ $100.91) |
| Feb 27, 2026 | Mark Steven Bender | EVP & CFO | Sell | $43K (421 @ $101.52) |
| Dec 22, 2025 | Albert Chao | Executive Chairman | Sell | $2.3M (30,604 @ $73.80) |
| Dec 22, 2025 | Albert Chao | Executive Chairman | Sell | $39K (521 @ $74.44) |
| Dec 22, 2025 | Albert Chao | Executive Chairman | Sell | $707K (9,711 @ $72.82) |
| May 27, 2025 | Robert F. Buesinger | EVP, PEM Segment Head | Sell | $6K (83 @ $72.70) |
| Apr 22, 2025 | Robert F. Buesinger | EVP, PEM Segment Head | Buy | $8K (83 @ $93.39) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.