Insider at

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Insider transactions

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0 buys (P) 0 sells (S) Net: $0 + 1 non-open-market transaction below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
April 2, 2026 WLK A 1,961 · · 1,961 Direct · Acquired (price as of 2026-09-14)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

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DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
April 2, 2026 WLK Restricted Stock Units Common Stock (1,961) · · 1,961 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 3 holdings

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Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
April 2, 2026 WLK Restricted Stock Units→ Common Stock (5,645) 5,645 Direct
April 2, 2026 WLK Restricted Stock Units→ Common Stock (882) 882 Direct
April 2, 2026 WLK Employee Option (right to buy)→ Common Stock (3,233) 3,233 Direct