David L. Duvall is CEO at CORE MOLDING TECHNOLOGIES INC (CMT). They have made 37 open-market trades across 1 company since 2018, most recently 2026-03-27.
CIK 0001757008
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.
20 open-market purchases totalling $810K since 2018, against 17 sales. Across 20 scored buys the stock is up 18.9% at ninety days, and 14.5 points ahead of the S&P over the same stretch.
20 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| CMT | 136,990 | $3.2M |
Shares reported on the most recent Form 4, priced at the 2026-03-31 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 65% | 45% | 55% |
| Avg Move | +7.3% | +2.1% | +18.9% |
| Alpha | +6.9% | +2.2% | +14.5% |
| Scored | 20 | 20 | 20 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CMT | SELL | 2025-09-09 | 2025-09-11 | $20.32 | $1.0M | +3.7% | -12.5% | -5.8% |
| CMT | SELL | 2025-06-20 | 2025-06-24 | $16.50 | $67K | +3.5% | +4.1% | +30.5% |
| CMT | SELL | 2025-06-13 | 2025-06-20 | $16.55 | $156K | +4.5% | +1.5% | +32.8% |
| CMT | SELL | 2025-06-09 | 2025-06-11 | $16.21 | $171K | -0.2% | +2.8% | +17.2% |
| CMT | SELL | 2025-06-06 | 2025-06-09 | $16.07 | $320K | +2.2% | +8.7% | +23.4% |
| CMT | SELL | 2025-06-04 | 2025-06-06 | $16.02 | $325K | +3.4% | +6.3% | +21.0% |
| CMT | SELL | 2024-12-24 | 2024-12-27 | $16.53 | $543K | -12.2% | -9.5% | -8.9% |
| CMT | SELL | 2024-12-18 | 2024-12-23 | $16.17 | $483K | -4.2% | -8.8% | -10.2% |
| CMT | SELL | 2024-12-06 | 2024-12-10 | $16.39 | $408K | +0.1% | -10.5% | -18.3% |
| CMT | SELL | 2024-09-12 | 2024-09-16 | $17.93 | $1.8M | -2.7% | -6.6% | -12.6% |
| CMT | SELL | 2024-08-23 | 2024-08-27 | $18.29 | $366K | -7.0% | -1.9% | -2.6% |
| CMT | SELL | 2024-08-20 | 2024-08-22 | $17.98 | $850K | -2.4% | -2.3% | -11.5% |
| CMT | SELL | 2024-05-13 | 2024-05-15 | $20.22 | $753K | +2.9% | -16.1% | -7.6% |
| CMT | SELL | 2023-09-25 | 2023-09-26 | $28.03 | $420K | +2.4% | -3.0% | -33.1% |
| CMT | SELL | 2023-09-15 | 2023-09-19 | $25.78 | $710K | +12.1% | +6.6% | -29.0% |
| CMT | SELL | 2023-09-12 | 2023-09-14 | $25.37 | $313K | +8.3% | +8.3% | -27.4% |
| CMT | BUY | 2023-06-26 | 2023-06-27 | $20.19 | $50K | +11.3% | +11.8% | +31.8% |
| CMT | BUY | 2022-08-22 | 2022-08-22 | $12.53 | $8K | -5.5% | -13.6% | -15.4% |
| CMT | BUY | 2022-08-16 | 2022-08-18 | $13.22 | $38K | +1.2% | -10.9% | -9.9% |
| CMT | SELL | 2022-05-19 | 2022-05-20 | $10.25 | $154K | -2.8% | -12.1% | +22.8% |
| CMT | BUY | 2021-11-18 | 2021-11-19 | $9.49 | $9K | -9.3% | -9.0% | -6.3% |
| CMT | BUY | 2021-11-09 | 2021-11-15 | $9.92 | $10K | -7.9% | -12.7% | -17.7% |
| CMT | BUY | 2021-06-11 | 2021-06-15 | $13.54 | $211K | +15.8% | +11.7% | -3.0% |
| CMT | BUY | 2021-06-08 | 2021-06-11 | $12.95 | $13K | +12.0% | +14.3% | -3.3% |
| CMT | BUY | 2021-03-19 | 2021-03-24 | $12.08 | $24K | -1.1% | -6.1% | +20.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.