secwatch.observer — SEC 8-K summary
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Issuer:     Vistra Corp. (VST)
CIK:        0001692819
Form:       8-K
Filed at:   2023-11-14T23:59:59+00:00
Accession:  0001193125-23-276580
Event type: leadership
Sentiment:  neutral
Materiality: 0.35
Item codes: 5.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Vistra appoints Margaret Montemayor as SVP, Chief Accounting Officer and Controller
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- Montemayor, 46, most recently VP and Chief Accounting Officer at Pioneer Natural Resources (2014-2022).
- Appointment effective November 13, 2023; succeeds Christy Dobry who moves to another internal role.
- No family relationships or material transactions with officers; no compensatory plan changes disclosed.
- Montemayor is a CPA with a BBA in Accounting and MBA from St. Mary's University.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1692819/000119312523276580/0001193125-23-276580-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1692819/000119312523276580/d314544d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-23-276580

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer