Thomas N. Tryforos is Director at CREDIT ACCEPTANCE CORPORATION (CACC). They have made 19 open-market trades across 2 companies since 2007, most recently 2026-06-10.
CIK 0000897542
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.
4 open-market purchases totalling $632K since 2007, against 15 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CPRT | 413,785 | $11.5M |
| CACC | 1,633 | $882K |
| Total | $12.4M |
Shares reported on the most recent Form 4, priced at the 2026-06-12 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 |
|---|---|---|---|---|---|---|---|---|
| CPRT | SELL | 2025-11-25 | 2025-11-25 | $39.07 | $3.9M | -1.6% | +0.6% | -9.4% |
| CPRT | SELL | 2025-09-15 | 2025-09-17 | $47.54 | $21.8M | -4.9% | -5.5% | -16.5% |
| CPRT | SELL | 2024-12-05 | 2024-12-09 | $61.86 | $10.3M | -5.5% | -8.2% | -14.6% |
| CPRT | SELL | 2024-03-13 | 2024-03-15 | $55.27 | $15.8M | +1.2% | -3.2% | -6.2% |
| CPRT | SELL | 2023-05-19 | 2023-05-23 | $88.39 | $12.6M | +2.3% | +3.2% | +0.5% |
| CPRT | SELL | 2022-05-31 | 2022-06-02 | $114.72 | $1.3M | -10.5% | -3.0% | +3.4% |
| CACC | SELL | 2021-12-09 | 2021-12-10 | $660.30 | $3.0M | +5.0% | -3.3% | -23.2% |
| CPRT | SELL | 2021-12-08 | 2021-12-10 | $149.63 | $10.3M | -2.5% | -8.8% | -22.4% |
| CACC | SELL | 2021-12-07 | 2021-12-09 | $660.84 | $14.6M | +2.2% | -5.2% | -21.3% |
| CACC | SELL | 2021-11-05 | 2021-11-09 | $684.78 | $2.7M | -2.5% | -0.8% | -21.0% |
| CPRT | SELL | 2020-01-14 | 2020-01-16 | $96.46 | $9.6M | +3.5% | +5.3% | -28.0% |
| CPRT | SELL | 2020-01-10 | 2020-01-14 | $95.72 | $20.4M | +3.5% | +7.5% | -26.5% |
| CACC | SELL | 2018-08-02 | 2018-08-06 | $437.43 | $10.7M | -3.3% | -1.6% | -7.4% |
| CACC | SELL | 2018-08-02 | 2018-08-06 | $438.14 | $14.6M | -3.3% | -1.6% | -7.4% |
| CPRT | SELL | 2018-06-11 | 2018-06-13 | $57.50 | $8.1M | +1.0% | +2.8% | +15.1% |
| CACC | BUY | 2007-12-03 | 2007-12-05 | $17.70 | $89K | -7.6% | +1.7% | +1.7% |
| CACC | BUY | 2007-11-09 | 2007-11-13 | $18.50 | $37K | -7.6% | +1.7% | +1.7% |
| CACC | BUY | 2007-11-02 | 2007-11-06 | $19.27 | $195K | -7.6% | +1.7% | +1.7% |
| CACC | BUY | 2007-09-14 | 2007-09-17 | $20.57 | $312K | -7.6% | +1.7% | +1.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.