Cynthia M. Durrett is CAO at Solaris Oilfield Infrastructure, Inc. (SOI). They have made 8 open-market trades across 2 companies since 2017, most recently 2026-03-01.
CIK 0001705383
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.
0 open-market purchases, against 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| SEI | 154,527 | $9.7M |
| SOI | 169,945 | $1.9M |
| Total | $11.6M |
Shares reported on the most recent Form 4, priced at the 2026-03-03 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SEI | SELL | 2025-12-17 | 2025-12-18 | $44.62 | $4.2M | +3.1% | +23.2% | +53.5% |
| SOI | SELL | 2023-08-03 | 2023-08-04 | $11.00 | $82K | -2.2% | -3.5% | -15.7% |
| SOI | SELL | 2022-05-04 | 2022-05-06 | $12.40 | $188K | +4.0% | +17.1% | -10.7% |
| SOI | SELL | 2021-03-12 | 2021-03-16 | $14.60 | $442K | -9.0% | -19.9% | -28.6% |
| SOI | SELL | 2021-03-05 | 2021-03-05 | $12.29 | $707K | +15.3% | -3.7% | -14.1% |
| SOI | SELL | 2019-09-16 | 2019-09-17 | $14.67 | $1.2M | +0.8% | -16.0% | +0.0% |
| SOI | SELL | 2018-01-11 | 2018-01-16 | $21.65 | $919K | -0.2% | -5.9% | -10.0% |
| SOI | SELL | 2017-11-14 | 2017-11-15 | $15.04 | $1.6M | +6.5% | +29.2% | +13.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.