Vistra Corp.·4

Mar 9, 9:12 PM ET

Montemayor Margaret 4

4 · Vistra Corp. · Filed Mar 9, 2026

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Vistra (VST) SVP Margaret Montemayor Receives RSU Award, Withholds Shares

What Happened
Margaret Montemayor, SVP and Chief Accounting Officer of Vistra Corp. (VST), had 1,989 restricted stock units (RSUs) vest on March 5, 2026 (reported as an award, code A, at $0.00). To cover tax withholding related to the vesting, the issuer withheld 561 shares (code F) at a reported per-share amount of $167.40, resulting in proceeds of $93,911. This was an RSU vesting event with tax withholding—not an open-market sale or purchase.

Key Details

  • Transaction dates: March 5, 2026 (award vested and withholding executed). Form 4 filed March 9, 2026 (accession 0001602114-26-000002).
  • Award: 1,989 RSUs granted/vested (reported at $0.00 per share).
  • Withholding: 561 shares withheld at $167.40 per share for taxes = $93,911. (Disposition coded F.)
  • Shares owned after transaction: Not specified in this filing.
  • Footnotes: (F1) The RSU grant was approved by Vistra’s Social Responsibility and Compensation Committee on Feb 18, 2026. (F2) The withholding was done by the issuer to satisfy tax obligations per the RSU award terms and was not within the reporting person’s control.

Context
RSU vesting and employer share-withholding for taxes are routine executive compensation events and do not necessarily indicate buying or selling intent. The withholding (code F) is a tax-payment mechanism, not an open-market disposition by the insider. Retail investors typically view purchases as stronger signals than routine vesting/withholding transactions.

Insider Transaction Report

Form 4
Period: 2026-03-05
Montemayor Margaret
SVP, Chief Accounting Officer
Transactions
  • Award

    Common Stock

    [F1]
    2026-03-05+1,98919,921 total
  • Tax Payment

    Common Stock

    [F2]
    2026-03-05$167.40/sh561$93,91119,360 total
Footnotes (2)
  • [F1]In connection with the annual grant of equity awards, the grant of the reported restricted stock units to the Reporting Person was approved by Issuer's Social Responsibility and Compensation Committee of the Board of Directors on February 18, 2026.
  • [F2]This transaction represents the withholding by the Issuer of shares to pay taxes in connection with the vesting of restricted stock units. The timing and amount of the transaction were determined by the terms of the applicable restricted stock unit award and were not within the control of the Reporting Person.
Signature
/s/ Daniela Gutierrez, as Attorney-in-Fact|2026-03-09

Documents

1 file
  • 4
    wk-form4_1773105140.xmlPrimary

    FORM 4