Marshall Heinberg is Director at Custom Truck One Source, Inc. (CTOS). They have made 9 open-market trades across 2 companies since 2020, most recently 2025-04-19.
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.
8 open-market purchases totalling $1.8M since 2020, against 1 sale. Across 8 scored buys the stock is up 25.4% at ninety days, and 16.2 points ahead of the S&P over the same stretch.
8 scored purchases · one row per filing · discretionary only
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 88% | 88% | 63% |
| Avg Move | +8.7% | +14.3% | +25.4% |
| Alpha | +6.3% | +10.1% | +16.2% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CTOS | BUY | 2024-06-14 | 2024-06-14 | $4.34 | $43K | +0.5% | +3.0% | -17.8% |
| CTOS | BUY | 2024-05-07 | 2024-05-08 | $4.07 | $163K | +7.2% | +5.9% | -11.5% |
| CTOS | BUY | 2023-11-10 | 2023-11-14 | $4.79 | $72K | +7.6% | +19.4% | +29.1% |
| CTOS | BUY | 2023-05-12 | 2023-05-16 | $6.46 | $385K | +0.8% | +9.4% | +0.5% |
| CTOS | BUY | 2022-05-13 | 2022-05-16 | $5.68 | $114K | +0.0% | -19.0% | +25.2% |
| CTOS | BUY | 2021-08-17 | 2021-08-18 | $6.50 | $195K | +34.8% | +43.4% | +44.9% |
| CTOS | BUY | 2021-04-01 | 2021-04-05 | $5.00 | $750K | +1.3% | +9.2% | -4.2% |
| ECOM | SELL | 2021-03-04 | 2021-03-04 | $22.46 | $292K | +10.3% | +14.4% | +11.4% |
| ECOM | BUY | 2020-03-17 | 2020-03-17 | $5.27 | $100K | +17.6% | +43.2% | +137.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.
| Total |
| $4.2M |
Shares reported on the most recent Form 4, priced at the 2025-04-21 close. 2 holdings could not be priced and are excluded from the total.