Equity · Basic Materials
WLK
Westlake Corporation · NYSE
The chart above plots the price of WLK over the range selected — one day to the full history — drawn by TradingView from their own data. Our own licensed end-of-day series holds 54 sessions over that window: $115.00 on 4 May 2026 through $77.65 on 17 July 2026. Finazon · prior-day close.
Finazon · prior-day close · valuation computed from SEC EDGAR filings · as of Jul 29, 2026
WLK insider trades
WLK has no Form 4 filing in the last 90 days, so there is no summary for that window. The most recent filings we hold are below, the newest dated 10 December 2025.
Showing the 12 most recent of 21 filings in this window. The figures above count all of them.
Compensation mechanics (12 filings)
Compensation mechanics Share grants, option exercises, tax withholding and transfers. They reach the same Form 4 as a trade, but they are not the insider buying or selling on the open market, so no purchase or sale value applies to them.
WLK reported financials
WLK reported revenue of $11.2B for the fiscal year ended 31 Dec 2025. Net income over the same period was −$1.5B.
Source: SEC EDGAR XBRL company facts · latest period ended 31 Mar 2026
WLK earnings
Reported figures & scheduled dates · SEC EDGAR filings
WLK institutional holders
8 of the 45 institutional funds we track reported a WLK position for the quarter ended 31 Mar 2026 — a combined $215.9M; the latest of those filings landed 15 May 2026.
Source: SEC EDGAR 13F filings
WLK fails-to-deliver
On 29 Jun 2026, 170 shares of WLK failed to deliver (about $13K) — the latest of 2 consecutive trading days with recorded fails.
Source: SEC fails-to-deliver (CNS) data