Jon Coleman is President at MASIMO CORP (MASI). They have made 24 open-market trades across 1 company since 2015, most recently 2026-06-04.
CIK 0001442689
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 24 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| DXCM | SELL · 10b5-1 | 2026-06-03 | 2026-06-05 | $73.56 | $723K | -2.8% | -1.1% | +22.5% |
| MASI | SELL | 2020-12-28 | 2020-12-30 | $264.02 | $2.2M | +4.2% | -4.1% | -15.3% |
| MASI | SELL | 2020-07-06 | 2020-07-08 | $235.00 | $294K | +5.0% | -7.6% | +2.2% |
| MASI | SELL | 2020-04-14 | 2020-04-15 | $195.00 | $1.2M | +5.5% | +22.5% | +10.4% |
| MASI | SELL | 2019-04-01 | 2019-04-02 | $140.00 | $280K | -0.7% | -2.0% | +9.9% |
| MASI | SELL | 2019-02-25 | 2019-02-27 | $132.50 | $530K | +0.1% | +5.7% | +6.6% |
| MASI | SELL | 2019-01-31 | 2019-02-01 | $125.00 | $250K | +3.0% | +7.2% | +7.3% |
| MASI | SELL | 2019-01-18 | 2019-01-22 | $120.00 | $240K | +3.8% | +6.9% | +2.6% |
| MASI | SELL | 2019-01-15 | 2019-01-16 | $115.00 | $230K | +4.9% | +11.5% | +13.9% |
| MASI | SELL | 2018-05-03 | 2018-05-04 | $93.75 | $4.7M | -1.5% | +1.9% | +10.7% |
| MASI | SELL | 2018-04-23 | 2018-04-25 | $90.00 | $1.1M | +11.0% | +11.6% | +12.3% |
| MASI | SELL | 2018-03-29 | 2018-04-02 | $87.50 | $3.6M | -0.2% | +6.9% | +14.0% |
| MASI | SELL | 2017-07-20 | 2017-07-24 | $97.50 | $2.4M | -11.9% | -14.1% | -9.9% |
| MASI | SELL | 2017-04-25 | 2017-04-26 | $100.00 | $3.5M | -15.0% | -13.4% | -2.2% |
| MASI | SELL | 2017-02-03 | 2017-02-07 | $75.00 | $450K | +10.2% | +24.2% | +12.4% |
| MASI | SELL | 2017-01-25 | 2017-01-27 | $72.50 | $841K | +4.3% | +24.4% | +40.5% |
| MASI | SELL | 2017-01-19 | 2017-01-23 | $72.50 | $15K | +4.2% | +21.8% | +39.5% |
| MASI | SELL | 2017-01-10 | 2017-01-12 | $70.00 | $420K | +0.9% | +5.6% | +31.0% |
| MASI | SELL | 2016-12-21 | 2016-12-21 | $67.50 | $270K | -0.3% | +5.3% | +35.7% |
| MASI | SELL | 2016-11-07 | 2016-11-09 | $60.00 | $360K | +0.1% | +4.5% | +23.1% |
| MASI | SELL | 2016-09-06 | 2016-09-08 | $60.00 | $360K | +0.6% | +2.4% | +7.4% |
| MASI | SELL | 2016-08-04 | 2016-08-08 | $56.82 | $1.3M | +4.5% | +7.4% | +8.3% |
| MASI | SELL | 2016-06-01 | 2016-06-02 | $50.00 | $200K | +3.1% | +3.9% | +18.3% |
| MASI | SELL | 2016-05-05 | 2016-05-06 | $47.00 | $376K | +4.8% | +7.7% | +24.1% |
| MASI | SELL | 2016-04-27 | 2016-04-29 | $44.00 | $176K | +6.6% | +14.5% | +21.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.