Margaret Montemayor
CIK 1602114 · SVP, Chief Accounting Officer · last filed 2026-06-04
Margaret Montemayor is a SVP, Chief Accounting Officer who has filed 45 SEC Form 4 insider transactions across 3 companies since 2014. The most recent filing shows the insider sold $736.0K of VST on Jun 4, 2026. Across all open-market trades the lifetime net is −$4.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.4M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$1.44M
3
45
-$4.61M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| VST | SVP, Chief Accounting Officer | 9,760 | $148.02 | $1.44M | -$1.56M | 7 | 2026-06-04 |
| Vistra Corp. (VST.WS.A) Delisted | SVP, Chief Accounting Officer | 14,534 | $0.01 | $113 | $0 | 1 | 2023-11-16 |
| PIONEER NATURAL RESOURCES CO (PXD) Delisted | VP & CAO | 5,012 | $269.62 | $1.35M | -$3.05M | 37 | 2022-03-31 |
Recent Filings
45 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-06-04 | VST | Sell (S) | −4,600 | -$736.0K | EDGAR |
| 2026-05-29 | VST | Sell (S) | −5,000 | -$824.8K | EDGAR |
| 2026-03-09 | VST | Mixed | +1,428 | -$93.9K | EDGAR |
| 2025-11-17 | VST | Tax (F) | −1,472 | -$252.5K | EDGAR |
| 2025-03-07 | VST | Mixed | +1,746 | -$50.0K | EDGAR |
| 2024-11-15 | VST | Tax (F) | −1,177 | -$167.3K | EDGAR |
| 2024-03-07 | VST | Grant (A) | +4,334 | $0 | EDGAR |
| 2023-11-16 | Vistra Corp. (VST.WS.A) Delisted | Grant (A) | +14,534 | $0 | EDGAR |
| 2022-03-31 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Sell (S) | −500 | -$125.2K | EDGAR |
| 2022-03-03 | PIONEER NATURAL RESOURCES CO (PXD) Delisted | Sell (S) | −3,855 | -$922.2K | EDGAR |