Charles M. Diker is Chairman at CANTEL MEDICAL CORP (CMN). They have made 70 open-market trades across 3 companies since 2005, most recently 2026-06-30.
CIK 0000905400
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.
3 open-market purchases totalling $165K since 2006, against 67 sales. Too few scored purchases to measure a record yet.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 88% | 83% | 82% |
| Avg Move | -5.4% | -2.0% | -2.2% |
| Scored | 24 | 24 | 22 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| L | SELL · 10b5-1 | 2025-12-01 | 2025-12-02 | $107.93 | $311K | -2.0% | -1.7% | +5.4% |
| L | SELL · 10b5-1 | 2025-09-02 | 2025-09-03 | $96.76 | $275K | -0.5% | +4.3% | +9.1% |
| L | SELL · 10b5-1 | 2025-06-02 | 2025-06-03 | $88.37 | $225K | -1.0% | +3.1% | +7.4% |
| L | SELL · 10b5-1 | 2025-03-03 | 2025-03-04 | $86.73 | $208K | +1.7% | +7.2% | +5.5% |
| L | SELL · 10b5-1 | 2024-12-02 | 2024-12-03 | $86.83 | $199K | -1.9% | -1.9% | +1.6% |
| L | SELL · 10b5-1 | 2024-09-03 | 2024-09-04 | $81.37 | $177K | -4.2% | -3.7% | +4.4% |
| L | SELL · 10b5-1 | 2024-06-03 | 2024-06-04 | $75.79 | $73K | -2.4% | -2.4% | +8.2% |
| L | SELL · 10b5-1 | 2024-03-01 | 2024-03-04 | $75.02 | $143K | +2.4% | +4.0% | +2.2% |
| L | SELL · 10b5-1 | 2023-12-01 | 2023-12-04 | $70.17 | $100K | -2.8% | -0.5% | +5.3% |
| L | SELL · 10b5-1 | 2023-09-01 | 2023-09-05 | $62.56 | $35K | +4.5% | +2.2% | +15.0% |
| L | SELL · 10b5-1 | 2023-06-01 | 2023-06-02 | $56.30 | $27K | -0.7% | +2.0% | +6.1% |
| L | SELL | 2023-03-01 | 2023-03-02 | $60.98 | $38K | -8.5% | -6.4% | -9.0% |
| L | SELL | 2022-12-01 | 2022-12-02 | $58.07 | $41K | -2.0% | +2.1% | +7.1% |
| L | SELL | 2022-09-01 | 2022-09-06 | $54.88 | $31K | -2.2% | -5.5% | +2.1% |
| L | SELL | 2022-06-01 | 2022-06-02 | $64.36 | $113K | -9.7% | -9.8% | -14.7% |
| L | SELL | 2022-03-01 | 2022-03-02 | $59.91 | $48K | +0.3% | +6.1% | +6.5% |
| L | SELL | 2021-12-01 | 2021-12-02 | $54.70 | $25K | +2.9% | +5.4% | +11.6% |
| L | SELL | 2021-09-01 | 2021-09-01 | $55.62 | $31K | -4.4% | -0.7% | -3.9% |
| L | SELL | 2021-06-01 | 2021-06-02 | $58.63 | $25K | -3.8% | -5.2% | -3.7% |
| L | SELL | 2020-12-01 | 2020-12-02 | $43.05 | $6K | +0.8% | +4.4% | +16.2% |
| L | SELL | 2020-06-01 | 2020-06-02 | $33.37 | $400 | -6.6% | -4.7% | +1.4% |
| L | SELL | 2020-03-02 | 2020-03-05 | $47.46 | $15K | -16.0% | -18.4% | -18.9% |
| L | SELL | 2019-12-02 | 2019-12-03 | $50.40 | $22K | +4.7% | +9.6% | +0.8% |
| CMD | SELL | 2019-10-22 | 2019-10-24 | $70.83 | $567K | +6.1% | +9.1% | -2.2% |
| L | SELL | 2019-09-03 | 2019-09-04 | $47.72 | $20K | +3.7% | +1.6% | -1.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.