Jay S. Skyler is Director at DEXCOM INC (DXCM). They have made 12 open-market trades across 1 company since 2008, most recently 2026-02-03.
CIK 0001236386
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.
3 open-market purchases totalling $1.2M since 2008, against 9 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DXCM | SELL | 2021-06-22 | 2021-06-24 | $426.37 | $17.1M | +5.2% | +6.3% | +34.0% |
| DXCM | SELL | 2020-01-03 | 2020-01-07 | $217.94 | $10.7M | +0.0% | +3.6% | +16.7% |
| DXCM | SELL | 2018-05-14 | 2018-05-16 | $88.00 | $2.6M | +1.0% | +15.6% | +47.7% |
| DXCM | SELL | 2018-05-08 | 2018-05-09 | $85.11 | $5.4M | +1.9% | +9.1% | +46.3% |
| DXCM | SELL | 2017-03-06 | 2017-03-08 | $78.13 | $5.0M | +2.1% | +0.9% | -10.7% |
| DXCM | SELL | 2016-09-12 | 2016-09-14 | $93.00 | $930K | +1.8% | -10.8% | -29.0% |
| DXCM | SELL | 2016-09-09 | 2016-09-13 | $94.07 | $2.4M | +3.6% | -9.5% | -28.0% |
| DXCM | SELL | 2016-08-19 | 2016-08-22 | $90.77 | $2.3M | +1.5% | +3.5% | -19.0% |
| DXCM | SELL · 10b5-1 | 2015-08-17 | 2015-08-19 | $96.65 | $1.9M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL · 10b5-1 | 2015-07-15 | 2015-07-17 | $81.69 | $1.6M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL · 10b5-1 | 2015-06-15 | 2015-06-16 | $70.67 | $1.4M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL | 2015-03-11 | 2015-03-13 | $60.00 | $2.7M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL · 10b5-1 | 2014-07-01 | 2014-07-03 | $40.05 | $1.2M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL · 10b5-1 | 2014-06-19 | 2014-06-23 | $40.00 | $2.4M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL · 10b5-1 | 2014-04-01 | 2014-04-03 | $41.29 | $1.2M | -11.2% | -2.2% | -2.2% |
| DXCM | SELL · 10b5-1 | 2014-03-26 | 2014-03-28 | $43.05 | $1.3M | -11.2% | -2.2% | -2.2% |
| DXCM | BUY | 2013-03-11 | 2013-03-11 | $15.50 | $1.1M | -11.2% | -2.2% | -2.2% |
| DXCM | BUY | 2011-11-18 | 2011-11-22 | $7.10 | $57K | -11.2% | -2.2% | -2.2% |
| DXCM | BUY | 2008-03-14 | 2008-03-14 | $4.96 | $99K | -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.