WLK WESTLAKE CORP Insider Trading

CFO Bender sold 16,413 shares of WLK at $112.54; stock at 52-week high (+10.1% in 30d), company unprofitable with -8.0% revenue growth.

Bender Mark Steven (EVP & CFO) sold 16,413 shares (16.4K shares) on 2026-03-27 at $112.54, reducing holdings by 36.9% and generating $1,847,036.96 in proceeds. The sale occurs as WLK trades at the 52-week high of $116.00, following a +10.1% surge over 30 days and a +54.9% rally over 90 days. Despite strong recent price momentum, the company reported a $-782,000,000.00 net loss in the most recent quarter and -8.0% annual revenue decline, indicating deteriorating fundamentals underneath the stock's recent gains. At same-ticker WLK, his prior 5 trades show inconsistent 90-day timing (only 1 of 3 measurable were well-timed with negative returns afterward), and only 2 of his cross-ticker 5 prior sells were well-timed, suggesting this insider's timing historically has not been predictive of near-term directional moves.

WLK CFO Bender sold 17.4K shares ($1.76M) at $100.92; stock up 60.4% in 90 days, company unprofitable

Mark Steven Bender, EVP & CFO of Westlake Corp, executed 2 separate sales totaling 17,409 shares for $1,756,996.90 on 2026-02-27, reducing his holdings by 28.2%. The transactions occurred at a blended average price of $100.92 while the stock trades at $106.79 today (up 60.4% over 90 days and near its 52-week high of $112.32). At his prior 3 trades in WLK stock, Bender's timing record shows mixed outcomes: only 1 of 3 prior sales resulted in subsequent decline (90-day return of -5.4%, +9.4%, and +15.3% respectively), indicating sells often preceded gains rather than downgrades. Notably, the company posted negative net income of $-782,000,000.00 over its most recent full fiscal year and generated $2,838,000,000.00 in quarterly revenue with annual growth of -8.0%, creating a disconnect between operational weakness and strong recent stock performance that preceded this sale.

WLK Executive Chairman Chao Albert sells 40,836 shares for $3,004,373.18 on 2025-12-22; retains 627,722 shares.

Chao Albert executed 3 separate sales totaling 40,836 shares for $3,004,373.18 at prices ranging from $72.82 to $74.44, reducing his holdings by 6.1% to 627,722 shares. The blended average sale price of $73.57 is marginally above the current price of $73.29, reflecting minimal deviation from current market levels. This transaction occurs amid challenging fundamentals for WLK: the latest quarter showed a net income loss of $782,000,000.00 despite revenue of $2,838,000,000.00, with annual revenue declining 3.2% year-over-year. The stock is currently down 38.5% from its 52-week high of $119.16, though recent momentum is positive at 24.2% over 30 days. The sale represents a routine portfolio adjustment by the Executive Chairman while maintaining a substantial majority stake of 627,722 shares post-transaction.

EVP Robert F. Buesinger sold 83 shares at $72.70 after purchasing them at $93.39, realizing a loss of ~$1,717 (~22%).

Robert F. Buesinger, EVP and PEM Segment Head, executed two separate transactions within five weeks: a purchase of 83 shares at $93.39 on 2025-04-22 totaling $7,751.37, followed by a sale of the same 83 shares at $72.70 on 2025-05-27 totaling $6,034.10. The sale occurred at a per-share loss of $20.69 relative to the purchase price, representing a ~22% drawdown on the invested capital. This pattern—buy then sell the entire position at a lower price within weeks—with the stock currently trading at $75.95 and having declined 30.1% over 90 days, falls outside typical insider conviction-signaling activity. The filing leaves holdings at zero shares, indicating no retained stake in the company following the transaction pair.