Nicholas Augustinos is Director at DEXCOM INC (DXCM). They have made 15 open-market trades across 1 company since 2013, most recently 2026-09-15.
CIK 0001238485
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 15 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| DXCM | 29,293 | $2.6M |
Shares reported on the most recent Form 4, priced at the 2026-09-16 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DXCM | SELL · 10b5-1 | 2026-09-14 | 2026-09-16 | $84.04 | $680K | -1.2% | -1.9% | — |
| DXCM | SELL · 10b5-1 | 2025-06-13 | 2025-06-17 | $82.34 | $1.0M | +6.4% | +2.5% | -7.8% |
| DXCM | SELL · 10b5-1 | 2023-12-15 | 2023-12-18 | $123.02 | $978K | +0.4% | +1.5% | +9.0% |
| DXCM | SELL | 2021-10-29 | 2021-11-02 | $600.03 | $1.5M | -0.1% | -13.4% | -33.5% |
| DXCM | SELL | 2021-06-03 | 2021-06-07 | $366.99 | $592K | +6.2% | +15.3% | +42.1% |
| DXCM | SELL | 2021-02-16 | 2021-02-17 | $412.03 | $1.5M | -3.8% | -16.4% | -20.0% |
| DXCM | SELL | 2021-01-06 | 2021-01-07 | $375.00 | $234K | -6.5% | +3.6% | -5.1% |
| DXCM | SELL | 2020-12-16 | 2020-12-18 | $355.30 | $666K | +4.8% | +1.4% | -3.8% |
| DXCM | SELL | 2020-09-16 | 2020-09-18 | $399.91 | $1.4M | +7.1% | +3.3% | -7.0% |
| DXCM | SELL | 2020-06-15 | 2020-06-17 | $364.98 | $1.1M | -1.7% | +4.8% | -1.8% |
| DXCM | SELL | 2020-02-14 | 2020-02-18 | $283.80 | $1.0M | -7.5% | -30.9% | +38.9% |
| DXCM | SELL | 2019-12-16 | 2019-12-16 | $206.14 | $747K | +2.3% | +9.9% | -5.1% |
| DXCM | SELL | 2019-11-07 | 2019-11-08 | $185.29 | $448K | +12.9% | +12.8% | +21.9% |
| DXCM | SELL | 2019-09-16 | 2019-09-18 | $145.49 | $352K | -5.3% | -0.4% | +38.0% |
| DXCM | SELL | 2019-06-14 | 2019-06-17 | $146.32 | $354K | -4.2% | -3.0% | -2.3% |
| DXCM | SELL | 2018-08-06 | 2018-08-08 | $121.47 | $2.2M | +6.5% | +15.7% | +7.2% |
| DXCM | SELL | 2013-12-12 | 2013-12-13 | $34.40 | $389K | -11.2% | -2.2% | -2.2% |
| DXCM | SELL | 2013-12-09 | 2013-12-11 | $33.63 | $3.3M | -11.2% | -2.2% | -2.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.