John P. Zimmer is CFO & VP +2 at CORE MOLDING TECHNOLOGIES INC (CMT). They have made 25 open-market trades across 1 company since 2014, most recently 2025-05-12.
CIK 0001591397
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.
12 open-market purchases totalling $389K since 2014, against 13 sales. Across 12 scored buys the stock is up 16.1% at ninety days, and 13.6 points ahead of the S&P over the same stretch.
12 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| CMT | 87,255 | $2.0M |
Shares reported on the most recent Form 4, priced at the 2025-05-15 close.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 50% | 50% | 50% |
| Avg Move | +0.7% | +2.5% | +16.1% |
| Alpha | +2.7% | +1.8% | +13.6% |
| Scored | 12 | 12 | 12 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CMT | SELL | 2024-11-25 | 2024-11-27 | $17.75 | $350K | -3.0% | -0.9% | -18.7% |
| CMT | SELL | 2024-08-23 | 2024-08-27 | $18.32 | $537K | -7.0% | -1.9% | -2.6% |
| CMT | SELL | 2024-08-21 | 2024-08-23 | $17.99 | $950K | -5.6% | -5.8% | -9.2% |
| CMT | SELL | 2024-05-28 | 2024-05-30 | $19.69 | $260K | -12.9% | -18.1% | -6.7% |
| CMT | SELL | 2024-05-17 | 2024-05-17 | $20.01 | $354K | +1.5% | -11.0% | -5.3% |
| CMT | SELL | 2024-05-14 | 2024-05-15 | $19.72 | $180K | +2.9% | -16.1% | -7.6% |
| CMT | SELL | 2023-09-29 | 2023-10-02 | $28.65 | $287K | -8.4% | -14.7% | -40.2% |
| CMT | SELL | 2023-09-22 | 2023-09-26 | $26.72 | $267K | +2.4% | -3.0% | -33.1% |
| CMT | SELL | 2023-09-20 | 2023-09-21 | $26.43 | $183K | +4.1% | +2.3% | -29.5% |
| CMT | SELL | 2023-09-15 | 2023-09-19 | $25.71 | $106K | +12.1% | +6.6% | -29.0% |
| CMT | SELL | 2023-09-12 | 2023-09-14 | $25.51 | $332K | +8.3% | +8.3% | -27.4% |
| CMT | SELL | 2023-09-07 | 2023-09-11 | $25.53 | $233K | +1.4% | +6.9% | -30.0% |
| CMT | SELL | 2023-09-05 | 2023-09-07 | $25.72 | $328K | -0.0% | +12.4% | -23.6% |
| CMT | BUY | 2023-06-27 | 2023-06-27 | $20.42 | $102K | +11.3% | +11.8% | +31.8% |
| CMT | BUY | 2022-08-19 | 2022-08-19 | $12.76 | $32K | -0.8% | -10.8% | -10.1% |
| CMT | BUY | 2021-11-09 | 2021-11-10 | $9.78 | $24K | -5.6% | -11.6% | -14.1% |
| CMT | BUY | 2021-06-11 | 2021-06-15 | $13.17 | $40K | +15.8% | +11.7% | -3.0% |
| CMT | BUY | 2021-03-23 | 2021-03-24 | $12.12 | $24K | -1.1% | -6.1% | +20.0% |
| CMT | BUY | 2020-09-11 | 2020-09-14 | $7.48 | $37K | +17.6% | +10.3% | +67.3% |
| CMT | BUY | 2020-09-04 | 2020-09-08 | $7.09 | $35K | +48.3% | +40.0% | +94.7% |
| CMT | BUY | 2016-11-18 | 2016-11-21 | $15.95 | $16K | +1.1% | +9.5% | +2.0% |
| CMT | BUY | 2016-08-16 | 2016-08-16 | $12.78 | $9K | +0.1% | +8.3% | +15.7% |
| CMT | BUY | 2015-12-11 | 2015-12-14 | $11.26 | $34K | -25.9% | -25.9% | -3.1% |
| CMT | BUY | 2015-06-19 | 2015-06-22 | $22.43 | $17K | -25.9% | -3.9% | -3.9% |
| CMT | BUY | 2014-06-05 | 2014-06-05 | $12.00 | $18K | -25.9% | -3.9% | -3.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.