Jean-Marc Gilson - Insider Trading & Ownership

Location: 2801 Post Oak Blvd., Suite 600, Houston, TX
Summary: The estimated net worth of Jean-Marc Gilson is at least $1.25M dollars as of August 29, 2025. Jean-Marc Gilson is the President and CEO of WESTLAKE CORP and owns shares of WESTLAKE CORP (WLK) stock worth about $994K. Jean-Marc Gilson is the President and CEO, Director of Westlake Chemical Partners LP and owns shares of Westlake Chemical Partners LP (WLKP) stock worth about $251K.
Signature: Jean-Marc Gilson by J. Feng POA
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Ownership of Jean-Marc Gilson

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
WLK	WESTLAKE CORP	President and CEO	$994K			Feb 28, 2025
WLKP	Westlake Chemical Partners LP	President and CEO, Director	$251K	+$164K	+188%	Aug 27, 2025

Sym	Company	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.