Updated Jul 16, 2026 · Last SEC filing 2026-06-23
Vistra Corp. (VST) has filed 16 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-23. 5 Form 8-K material event filings were reported by VST in the last 90 days. 8 Form 144 notices of proposed sale were filed for VST stock. InsiderAlpha tracks every VST SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Electric Services (SIC 4911) |
|---|---|
| SEC CIK | 0001692819 |
| Form 4 filings (90d) | 16 |
|---|---|
| Form 8-K filings (90d) | 5 |
| Form 144 notices (90d) | 8 |
| Latest Form 4 filing | 2026-06-23 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Acosta Arcilia | Director | S — Open-market sale | 7.5K | $165.04 | $1.24M | SEC | |
| SULT JOHN R | Director | S — Open-market sale | 6.5K | $170.00 | $1.10M | SEC | |
| Acosta Arcilia | Director | S — Open-market sale | 7.5K | $170.00 | $1.27M | SEC | |
| HELM SCOTT B | Director | S — Open-market sale | 25.0K | $160.00 | $4.00M | SEC | |
| BARBAS PAUL M | Director | S — Open-market sale | 244 | $153.00 | $37K | SEC | |
| BARBAS PAUL M | Director | S — Open-market sale | 244 | $147.93 | $36K | SEC | |
| Montemayor Margaret | SVP, Chief Accounting Officer | S — Open-market sale | 4.6K | $160.00 | $736K | SEC | |
| Montemayor Margaret | SVP, Chief Accounting Officer | S — Open-market sale | 5.0K | $164.96 | $825K | SEC | |
| Baiera Gavin R. | Director | A — Grant or award | 1.3K | $0.00 | — | SEC | |
| Crutchfield Lisa | Director | A — Grant or award | 1.3K | $0.00 | — | SEC | |
| SULT JOHN R | Director | A — Grant or award | 1.3K | $0.00 | — | SEC | |
| BARBAS PAUL M | Director | A — Grant or award | 1.3K | $0.00 | — | SEC | |
| Lagacy Julie A. | Director | A — Grant or award | 1.3K | $0.00 | — | SEC | |
| Pitesa John William | Director | A — Grant or award | 1.3K | $0.00 | — | SEC | |
| Ackermann Hilary E. | Director | A — Grant or award | 1.3K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Vistra Corp. (VST). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Acosta Arcilia | 3 | $2.51M |
| BARBAS PAUL M | 3 | $73K |
| Montemayor Margaret | 2 | $1.56M |
| HELM SCOTT B | 2 | $4.00M |
| SULT JOHN R | 2 | $1.10M |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in VST insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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