Margaret Montemayor

CIK: 0001602114

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (25.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)2 (25.0%)

Compensation grants

Other (G, F, J, C, D, …)4 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

VST

Vistra Corp.

Officer

Discretionary Trading P&L

Holdings

Transaction History (8 total)

VST
Vistra Corp.
Jun 2, 2026
Sale(S)
Direct
4.6K shares at avg. $160.00$736K
VST
Vistra Corp.
May 27, 2026
Sale(S)
Direct
5K shares at avg. $164.96$825K
VST
Vistra Corp.
Mar 5, 2026
Tax Payment(F)
Direct
561 shares at avg. $167.40$94K
VST
Vistra Corp.
Mar 5, 2026
Award(A)
Direct
2K shares-
VST
Vistra Corp.
Nov 13, 2025
Tax Payment(F)
Direct
1.5K shares at avg. $171.56$253K
VST
Vistra Corp.
Mar 5, 2025
Tax Payment(F)
Direct
394 shares at avg. $126.87$50K
VST
Vistra Corp.
Mar 5, 2025
Award(A)
Direct
2.1K shares-
VST
Vistra Corp.
Nov 13, 2024
Tax Payment(F)
Direct
1.2K shares at avg. $142.12$167K

		Type	Shares	Price		Ownership
Jun 2, 2026	VST Vistra Corp.	Sale(S)	4,600	$160.00	$736,000	Direct
May 27, 2026	VST Vistra Corp.	Sale(S)	5,000	$164.96	$824,800	Direct
Mar 5, 2026	VST Vistra Corp.	Tax Payment(F)	561	$167.40	$93,911	Direct
Mar 5, 2026	VST Vistra Corp.	Award(A)	1,989	-	$0	Direct
Nov 13, 2025	VST Vistra Corp.	Tax Payment(F)	1,472	$171.56	$252,536	Direct
Mar 5, 2025	VST Vistra Corp.	Tax Payment(F)	394	$126.87	$49,987	Direct
Mar 5, 2025	VST Vistra Corp.	Award(A)	2,140	-	-	Direct
Nov 13, 2024	VST Vistra Corp.	Tax Payment(F)	1,177	$142.12	$167,275	Direct

1-8 of 8 transactions

About Montemayor Margaret

Montemayor Margaret (SEC CIK 0001602114) files insider reports with the SEC as SVP, Chief Accounting Officer of Vistra Corp. (VST).

Signal8 holds 6 ownership filings by Montemayor Margaret, all Form 4s, filed between Nov 15, 2024 and Jun 4, 2026. Those filings report 8 transactions, from Nov 13, 2024 to Jun 2, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Montemayor Margaret's filings is in IRVING, TX.

Recent filings by Montemayor Margaret

Jun 2, 2026: Open-market sale of VST shares (Form 4, code S).
May 27, 2026: Open-market sale of VST shares (Form 4, code S).
Mar 5, 2026: Tax withholding of VST shares (Form 4, code F).
Mar 5, 2026: Grant or award of VST shares (Form 4, code A).
Nov 13, 2025: Tax withholding of VST shares (Form 4, code F).

Other insiders filing for Vistra Corp. (VST)

Moldovan Kristopher E., EVP and CFO
HUDSON SCOTT A, EVP & President Vistra Retail
BURKE JAMES A, President and CEO
SULT JOHN R, Director
Acosta Arcilia, Director
HELM SCOTT B, Director

How to read Form 4 transaction codes