Richard Doubleday is CCO & VP at DEXCOM INC (DXCM). They have made 73 open-market trades across 1 company since 2013, most recently 2021-03-23.
CIK 0001466545
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 73 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DXCM | 6,748 | $581K |
Shares reported on the most recent Form 4, priced at the 2021-03-24 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DXCM | SELL | 2021-03-23 | 2021-03-24 | $360.56 | $733K | +4.8% | +16.6% | +20.2% |
| DXCM | SELL | 2021-02-24 | 2021-02-26 | $404.00 | $448K | -11.0% | -12.7% | -9.6% |
| DXCM | SELL | 2021-01-22 | 2021-01-25 | $368.82 | $815K | +6.8% | +7.4% | +10.9% |
| DXCM | SELL | 2021-01-04 | 2021-01-06 | $366.07 | $8.1M | -5.1% | +9.1% | -1.0% |
| DXCM | SELL | 2020-12-23 | 2020-12-28 | $359.77 | $661K | +5.5% | -4.9% | -5.0% |
| DXCM | SELL | 2020-11-23 | 2020-11-25 | $318.99 | $708K | +9.6% | +14.1% | +28.1% |
| DXCM | SELL | 2020-10-23 | 2020-10-27 | $402.79 | $801K | -1.4% | -13.1% | +2.7% |
| DXCM | SELL | 2020-09-24 | 2020-09-28 | $380.95 | $583K | -3.1% | -12.7% | -9.4% |
| DXCM | SELL | 2020-09-09 | 2020-09-11 | $398.30 | $3.7M | -0.0% | +2.1% | -10.1% |
| DXCM | SELL | 2020-08-24 | 2020-08-26 | $427.22 | $1.3M | -8.5% | -5.4% | -26.3% |
| DXCM | SELL | 2020-07-23 | 2020-07-27 | $427.82 | $1.1M | +3.7% | +0.6% | -1.2% |
| DXCM | SELL | 2020-06-23 | 2020-06-25 | $409.41 | $1.3M | +8.8% | +5.9% | -3.5% |
| DXCM | SELL | 2020-05-22 | 2020-05-27 | $396.74 | $1.2M | +2.2% | +6.2% | +19.3% |
| DXCM | SELL | 2020-04-23 | 2020-04-27 | $318.57 | $975K | +20.7% | +7.4% | +26.4% |
| DXCM | SELL | 2020-03-23 | 2020-03-25 | $209.27 | $320K | +10.4% | +36.3% | +66.8% |
| DXCM | SELL | 2020-03-11 | 2020-03-13 | $265.08 | $4.3M | +11.3% | +27.1% | +68.7% |
| DXCM | SELL | 2020-02-24 | 2020-02-26 | $277.54 | $791K | -2.6% | -3.9% | +39.6% |
| DXCM | SELL | 2020-01-23 | 2020-01-27 | $233.96 | $530K | +1.3% | +18.0% | +42.1% |
| DXCM | SELL | 2019-12-23 | 2019-12-23 | $212.98 | $610K | +4.2% | +8.6% | -3.0% |
| DXCM | SELL | 2019-11-22 | 2019-11-25 | $217.69 | $384K | -0.8% | -5.0% | +29.8% |
| DXCM | SELL | 2019-10-23 | 2019-10-25 | $152.15 | $330K | +3.8% | +53.7% | +59.7% |
| DXCM | SELL | 2019-09-24 | 2019-09-26 | $155.00 | $625K | -0.1% | +0.7% | +43.0% |
| DXCM | SELL | 2019-09-09 | 2019-09-11 | $149.98 | $1.7M | +5.3% | +5.4% | +46.2% |
| DXCM | SELL | 2019-08-23 | 2019-08-26 | $175.15 | $706K | -8.9% | -12.7% | +28.7% |
| DXCM | SELL | 2019-07-23 | 2019-07-24 | $153.55 | $588K | -6.5% | +14.2% | -0.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.