Leslie Kohn is CTO at AMBARELLA INC (AMBA). They have made 63 open-market trades across 1 company since 2012, most recently 2025-09-17.
CIK 0001558645
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.
0 open-market purchases, against 63 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMBA | 977,428 | $60.3M |
Shares reported on the most recent Form 4, priced at the 2025-09-19 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMBA | SELL | 2025-09-17 | 2025-09-19 | $79.43 | $357K | +2.1% | +1.4% | -15.5% |
| AMBA | SELL | 2025-06-17 | 2025-06-20 | $52.26 | $179K | +28.9% | +35.9% | +61.0% |
| AMBA | SELL | 2025-03-18 | 2025-03-20 | $55.02 | $174K | -5.3% | -22.2% | -0.8% |
| AMBA | SELL | 2025-03-06 | 2025-03-07 | $55.11 | $255K | +6.6% | -19.4% | -0.0% |
| AMBA | SELL | 2024-12-16 | 2024-12-18 | $75.41 | $265K | +4.1% | +15.7% | -23.0% |
| AMBA | SELL | 2024-09-17 | 2024-09-19 | $53.54 | $172K | -1.3% | +4.3% | +27.0% |
| AMBA | SELL | 2024-06-18 | 2024-06-20 | $55.48 | $180K | +0.5% | +4.2% | -3.4% |
| AMBA | SELL | 2024-03-18 | 2024-03-20 | $49.27 | $118K | -5.5% | -20.9% | +6.4% |
| AMBA | SELL | 2024-03-08 | 2024-03-11 | $57.16 | $40K | -9.0% | -14.1% | +3.7% |
| AMBA | SELL | 2023-12-19 | 2023-12-21 | $63.04 | $216K | -13.6% | -9.7% | -19.6% |
| AMBA | SELL | 2023-09-18 | 2023-09-20 | $57.30 | $191K | -2.1% | -7.2% | +17.4% |
| AMBA | SELL | 2023-06-20 | 2023-06-20 | $84.80 | $285K | +2.7% | -2.0% | -28.9% |
| AMBA | SELL | 2023-03-17 | 2023-03-17 | $76.85 | $1.8M | -1.4% | -11.0% | +12.2% |
| AMBA | SELL | 2022-12-16 | 2022-12-20 | $83.77 | $411K | -3.6% | +1.6% | -5.8% |
| AMBA | SELL | 2022-09-26 | 2022-09-28 | $58.95 | $729K | -3.0% | -2.0% | +36.2% |
| AMBA | SELL | 2022-09-16 | 2022-09-20 | $63.25 | $157K | -11.5% | -17.7% | +25.5% |
| AMBA | SELL | 2022-06-16 | 2022-06-17 | $66.25 | $346K | -5.3% | -2.2% | -5.6% |
| AMBA | SELL | 2022-03-16 | 2022-03-18 | $91.20 | $6.9M | +6.9% | -9.0% | -33.6% |
| AMBA | SELL | 2022-03-14 | 2022-03-14 | $84.42 | $308K | +19.9% | +12.8% | -14.9% |
| AMBA | SELL | 2021-12-16 | 2021-12-17 | $188.88 | $1.4M | +15.6% | -16.7% | -45.1% |
| AMBA | SELL | 2021-12-03 | 2021-12-07 | $192.69 | $1.3M | -16.5% | -22.0% | -60.8% |
| AMBA | SELL | 2021-06-16 | 2021-06-17 | $101.39 | $1.1M | +8.2% | -9.2% | +53.8% |
| AMBA | SELL | 2021-03-16 | 2021-03-18 | $112.00 | $2.5M | -6.9% | -6.0% | -3.5% |
| AMBA | SELL | 2021-03-09 | 2021-03-11 | $109.70 | $190K | -13.6% | -11.8% | -16.3% |
| AMBA | SELL | 2021-02-16 | 2021-02-18 | $127.30 | $3.1M | -9.2% | -15.4% | -26.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.