Donald Abbey is VP at DEXCOM INC (DXCM). They have made 13 open-market trades across 2 companies since 2013, most recently 2026-05-13.
CIK 0001534342
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 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DXCM | SELL | 2021-09-09 | 2021-09-13 | $541.36 | $1.4M | +5.6% | +1.0% | +1.3% |
| DXCM | SELL | 2021-03-10 | 2021-03-12 | $362.92 | $4.0M | +0.6% | +9.4% | +12.8% |
| DXCM | SELL | 2020-09-09 | 2020-09-11 | $395.67 | $5.7M | -0.0% | +2.1% | -10.1% |
| DXCM | SELL | 2020-08-24 | 2020-08-26 | $424.62 | $7.1M | -8.5% | -5.4% | -26.3% |
| DXCM | SELL | 2020-03-11 | 2020-03-13 | $264.79 | $4.2M | +11.3% | +27.1% | +68.7% |
| DXCM | SELL | 2019-11-21 | 2019-11-25 | $220.21 | $5.1M | -0.8% | -5.0% | +29.8% |
| DXCM | SELL | 2019-09-09 | 2019-09-11 | $149.98 | $1.7M | +5.3% | +5.4% | +46.2% |
| DXCM | SELL | 2019-06-03 | 2019-06-04 | $121.08 | $2.2M | +18.4% | +17.6% | +37.8% |
| DXCM | SELL | 2019-03-12 | 2019-03-13 | $142.79 | $2.2M | -15.7% | -19.9% | -5.9% |
| DXCM | SELL | 2018-11-09 | 2018-11-13 | $149.31 | $1.6M | -11.9% | -14.0% | +5.7% |
| DXCM | SELL | 2018-09-10 | 2018-09-12 | $143.76 | $662K | -3.4% | -13.6% | -16.3% |
| CFN | SELL | 2014-12-04 | 2014-12-05 | $59.35 | $59K | N/A | N/A | N/A |
| CFN | SELL · 10b5-1 | 2014-04-04 | 2014-04-08 | $41.79 | $421K | N/A | N/A | N/A |
| CFN | SELL · 10b5-1 | 2014-03-07 | 2014-03-11 | $41.76 | $57K | N/A | N/A | N/A |
| CFN | SELL · 10b5-1 | 2014-02-28 | 2014-03-04 | $41.02 | $246K | N/A | N/A | N/A |
| CFN | SELL | 2013-02-15 | 2013-02-20 | $32.75 | $328K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.