Richard Alexander Collins is Director at DEXCOM INC (DXCM). They have made 2 open-market trades across 1 company since 2020, most recently 2026-05-28.
CIK 0001700619
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 2 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DXCM | 5,605 | $482K |
Shares reported on the most recent Form 4, priced at the 2026-06-01 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DXCM | SELL · 10b5-1 | 2025-11-14 | 2025-11-17 | $59.05 | $343K | +8.8% | +12.7% | +20.7% |
| DXCM | SELL · 10b5-1 | 2025-11-10 | 2025-11-10 | $55.17 | $436K | +3.8% | +20.0% | +24.6% |
| DXCM | SELL | 2021-11-03 | 2021-11-29 | $647.05 | $1.9M | -2.1% | -6.4% | -27.6% |
| DXCM | SELL | 2020-02-18 | 2020-02-20 | $284.40 | $1.1M | -10.6% | -31.1% | +31.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.