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Westlake Chemical Partners

Westlake Chemical Partners (NYSE: WLKP) insider transactions

In the twelve months to 10 November 2026, executives and directors of Westlake Chemical Partners reported no open-market sales and no open-market purchases, according to the Form 4 filings they submitted to the SEC.

Latest transactions

The 20 most recent transactions in Westlake Chemical Partners shares reported on Form 4
DateInsiderRoleTransactionSharesPriceHeld afterFiling
6 August 2026Finley G StephenDirectorOption exercise+5,005—36,935Form 4
6 August 2026Woelfel RandyDirectorOption exercise+5,005—28,918Form 4
6 August 2026Woelfel RandyDirectorReturned to the company−5,005$21.3523,913Form 4
6 August 2026Friel Lisa A.DirectorOption exercise+5,005—12,168Form 4
6 August 2026Friel Lisa A.DirectorReturned to the company−2,502$21.359,666Form 4
27 August 2025Gilson Jean-MarcPresident and CEOOpen-market purchase+95$21.2511,803Form 4
21 August 2025Gilson Jean-MarcPresident and CEOOpen-market purchase+1,250$22.0211,708Form 4
20 August 2025Gilson Jean-MarcPresident and CEOOpen-market purchase+1,250$21.8610,458Form 4
15 August 2025Gilson Jean-MarcPresident and CEOOpen-market purchase+4,700$21.849,208Form 4
7 August 2025Finley G StephenDirectorOption exercise+4,882—31,930Form 4
7 August 2025Woelfel RandyDirectorOption exercise+4,882—28,795Form 4
7 August 2025Woelfel RandyDirectorReturned to the company−4,882$21.9623,913Form 4
7 August 2025Friel Lisa A.DirectorOption exercise+4,882—9,604Form 4
7 August 2025Friel Lisa A.DirectorReturned to the company−2,441$21.967,163Form 4
29 May 2025Gilson Jean-MarcPresident and CEOOpen-market purchase+94$22.204,508Form 4
29 May 2025Chao JamesSenior ChairmanOpen-market sale−3,700$22.100Form 4
28 May 2025Chao JamesSenior ChairmanOpen-market sale−4,600$22.103,700Form 4
27 May 2025Chao JamesSenior ChairmanOpen-market sale−5,608$22.178,300Form 4
25 February 2025Gilson Jean-MarcPresident and CEOOpen-market purchase+83$24.754,414Form 4
27 November 2024Gilson Jean-MarcPresident and CEOOpen-market purchase+85$23.574,332Form 4

Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.

How to read the table

Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.

Where each row comes from

From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the Westlake Chemical Partners page; the method, in data sources.

Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.