Robert F. Buesinger, EVP, Vinyl Products at WESTLAKE CHEMICAL CORP (WLK), sold 5,000 shares at $105.00 ($525K) on 2021-05-10, disclosed to the SEC on 2021-05-11.
Open-market sale of $525k WLK by EVP, Vinyl Products. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Something here stands out, but not much.
| Filing → |
| WLK | BUY | 2025-06-09 | $8K | — | Filing → |
| WLK | SELL | 2024-05-13 | $555K | — | Filing → |
| WLK | SELL | 2024-03-18 | $560K | — | Filing → |