Stephen W. Bergstrom is Director at Third Coast Midstream, LLC (AMID). They have made 5 open-market trades across 2 companies since 2015, most recently 2026-05-19.
CIK 0001013283
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
5 open-market purchases totalling $1.9M since 2015, never a sale. Across 5 scored buys the stock is up 9.8% at ninety days, and 2.1 points ahead of the S&P over the same stretch.
5 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 60% | 80% | 60% |
| Avg Move | -7.8% | +5.6% | +9.8% |
| Alpha | -4.0% | +3.3% | +2.1% |
| Scored | 5 | 5 | 5 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WMB | BUY | 2023-03-14 | 2023-03-15 | $29.00 | $200K | +2.0% | +7.2% | +7.5% |
| WMB | BUY | 2020-03-09 | 2020-03-10 | $15.30 | $251K | -26.7% | +5.5% | +37.2% |
| WMB | BUY | 2019-08-23 | 2019-08-23 | $22.99 | $460K | +3.7% | +6.0% | -1.9% |
| WMB | BUY | 2017-06-20 | 2017-06-20 | $28.12 | $499K | +5.9% | +10.0% | +7.0% |
| AMID | BUY | 2015-09-15 | 2015-09-15 | $11.31 | $500K | -23.7% | -0.6% | -0.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.