Jacob Steven Leach is CTO & VP at DEXCOM INC (DXCM). They have made 27 open-market trades across 2 companies since 2017, most recently 2026-08-22.
CIK 0001700255
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.
2 open-market purchases totalling $1.2M since 2021, against 25 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DXCM | 418,908 | $36.0M |
| SNES | 150,000 | $94K |
| Total | $36.1M |
Shares reported on the most recent Form 4, priced at the 2026-08-25 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 |
|---|---|---|---|---|---|---|---|---|
| SNES | SELL | 2025-11-18 | 2025-11-19 | $2.71 | $168 | +7.1% | -7.9% | -6.7% |
| DXCM | BUY | 2025-11-10 | 2025-11-10 | $55.04 | $1.0M | +3.8% | +20.0% | +24.6% |
| DXCM | SELL | 2025-03-12 | 2025-03-14 | $70.38 | $2.0M | +2.6% | -4.2% | +17.8% |
| DXCM | SELL | 2025-01-29 | 2025-01-30 | $86.91 | $458K | -0.6% | -1.0% | -17.8% |
| DXCM | SELL | 2024-12-16 | 2024-12-17 | $76.87 | $114K | +1.0% | +9.8% | -7.6% |
| DXCM | SELL | 2024-09-09 | 2024-09-11 | $69.15 | $103K | +1.8% | +1.1% | +16.0% |
| DXCM | SELL | 2024-06-10 | 2024-06-11 | $115.05 | $171K | -5.2% | -3.4% | -40.2% |
| DXCM | SELL | 2024-03-12 | 2024-03-14 | $134.41 | $3.9M | +6.9% | +2.8% | -10.5% |
| DXCM | SELL | 2024-01-16 | 2024-01-17 | $123.63 | $984K | -1.6% | -7.3% | +8.1% |
| DXCM | SELL | 2023-04-20 | 2023-04-20 | $125.00 | $3.8M | -4.2% | -3.3% | +8.3% |
| DXCM | SELL | 2023-03-06 | 2023-03-06 | $114.74 | $4.2M | +1.2% | -0.4% | +10.1% |
| DXCM | SELL | 2021-09-09 | 2021-09-13 | $541.36 | $1.4M | +5.6% | +1.0% | +1.3% |
| SNES | BUY | 2021-08-16 | 2021-08-18 | $1.53 | $229K | +7.8% | +7.1% | +0.6% |
| DXCM | SELL | 2021-07-30 | 2021-08-02 | $476.70 | $11.5M | -3.8% | +6.4% | +22.4% |
| DXCM | SELL | 2021-06-09 | 2021-06-10 | $395.00 | $9.0M | +6.6% | +11.1% | +37.3% |
| DXCM | SELL | 2021-03-10 | 2021-03-12 | $362.92 | $3.9M | +0.6% | +9.4% | +12.8% |
| DXCM | SELL | 2020-09-09 | 2020-09-11 | $398.30 | $3.1M | -0.0% | +2.1% | -10.1% |
| DXCM | SELL | 2020-06-11 | 2020-06-15 | $377.21 | $12.1M | -1.0% | +4.0% | -2.1% |
| DXCM | SELL | 2020-03-11 | 2020-03-13 | $265.06 | $3.6M | +11.3% | +27.1% | +68.7% |
| DXCM | SELL | 2019-09-09 | 2019-09-11 | $149.98 | $1.4M | +5.3% | +5.4% | +46.2% |
| DXCM | SELL | 2019-06-13 | 2019-06-14 | $145.26 | $1.4M | -4.8% | +1.7% | -1.0% |
| DXCM | SELL | 2019-03-12 | 2019-03-13 | $142.79 | $2.4M | -15.7% | -19.9% | -5.9% |
| DXCM | SELL | 2018-09-28 | 2018-10-01 | $143.96 | $13.7M | -8.8% | -1.1% | -10.8% |
| DXCM | SELL | 2018-09-10 | 2018-09-12 | $143.76 | $1.3M | -3.4% | -13.6% | -16.3% |
| DXCM | SELL | 2018-08-24 | 2018-08-28 | $138.32 | $4.3M | +2.7% | +1.9% | -10.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.