Margaret Montemayor - Insider Trading & Ownership

Location: 777 Hidden Ridge, Irving, TX
Summary: The estimated net worth of Margaret Montemayor is at least $4.2M dollars as of November 17, 2025. Margaret Montemayor is the SVP, Chief Accountant of Vistra Corp. and owns shares of Vistra Corp. (VST) stock worth about $3.08M. Margaret Montemayor is the VP & CAO of PIONEER NATURAL RESOURCES CO and owns shares of PIONEER NATURAL RESOURCES CO stock worth about $1.13M.
Signature: /s/ Daniela Gutierrez, as Attorney-in-Fact
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Ownership of Margaret Montemayor

Symbol	Company	Relationship	Holdings Value	Past Year Net Change	Change %	Report Period
VST	Vistra Corp.	SVP, Chief Accountant	$3.08M			Nov 13, 2025
PXD	PIONEER NATURAL RESOURCES CO	Vp & Cao	$1.13M			Mar 29, 2022

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.