Overview
Westlake Corp (NASDAQ:WLK) saw a notable insider transaction on February 27, 2026, when Executive Vice President and Chief Financial Officer Mark Steven Bender sold 17,409 shares of the company’s common stock. The disposition generated approximately $1.76 million and was carried out in multiple transactions with trade prices ranging from $100.91 to $101.515.
Options exercise and immediate disposition
On the same date, Bender exercised options that resulted in the acquisition of 12,693 shares of Westlake common stock. Those option exercises were comprised of 6,199 shares at a strike price of $65.8125 and 6,494 shares at a strike price of $86.5379, having an aggregate value of $969,948. Following the exercise, Bender sold 12,693 shares at $98.2 per share, producing total proceeds of $1,246,452.
Post-transaction ownership
After completing the aforementioned sales and option exercises, Bender directly owns 44,433 shares of Westlake Corp.
Market and valuation context
The $13.48 billion chemical manufacturer is cited as trading above its InvestingPro Fair Value and appears on that platform’s Most Overvalued list. The company’s share price has moved higher recently, trading at $105.20 at the time of reporting, a 13% increase over the prior week and a 43% gain year-to-date.
Earnings result and market reaction
Westlake Chemical Corporation reported fourth-quarter 2025 earnings per share of -4.22 USD, missing the consensus forecast of -1.4 USD. Despite the shortfall, the company’s shares rose in premarket trading following the release, reflecting investor focus on the company’s guidance and strategic initiatives. The earnings miss and subsequent market reaction have become central inputs for investors assessing Westlake Chemical’s near-term financial trajectory.
Analyst attention and investor focus
Various analyst firms have paid attention to Westlake’s latest developments, although no specific analyst upgrades or downgrades were detailed. Market participants are closely monitoring how the company addresses the challenges reflected in the quarter and how its strategic initiatives will influence future performance.
Note on content
The article summarizes reported insider transactions, current ownership, valuation signals from a third-party platform, and the company’s recent quarterly financial outcome, along with the market’s immediate reaction.