Andrew Miller is CFO & EVP at CEPHEID (CPHD). They have made 21 open-market trades across 6 companies since 2006, most recently 2025-11-26.
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 21 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| VNT | SELL | 2022-08-16 | 2022-08-17 | $23.88 | $128K | -5.3% | -18.2% | -15.5% |
| IRBT | SELL | 2021-06-07 | 2021-06-08 | $97.48 | $204K | -5.7% | -12.0% | -18.1% |
| IRBT | SELL | 2020-12-10 | 2020-12-11 | $76.26 | $137K | +14.9% | +15.5% | +61.7% |
| IRBT | SELL | 2020-06-08 | 2020-06-09 | $81.83 | $74K | +1.1% | +7.0% | -11.1% |
| IRBT | SELL · 10b5-1 | 2019-12-10 | 2019-12-11 | $46.20 | $20K | +10.2% | +5.1% | -13.3% |
| IRBT | SELL | 2019-06-10 | 2019-06-11 | $91.97 | $161K | +2.7% | +0.6% | -29.5% |
| PTC | SELL | 2019-03-01 | 2019-03-05 | $93.31 | $8.3M | +0.8% | +3.5% | -10.7% |
| IRBT | SELL · 10b5-1 | 2018-12-10 | 2018-12-12 | $90.53 | $40K | -17.4% | -6.0% | +34.8% |
| PTC | SELL | 2018-11-16 | 2018-11-19 | $85.16 | $6.7M | +8.2% | +5.0% | +15.9% |
| PTC | SELL | 2018-08-15 | 2018-08-17 | $92.18 | $3.7M | +6.9% | +9.8% | -3.1% |
| PTC | SELL | 2018-07-27 | 2018-07-27 | $95.69 | $4.0M | -1.6% | +2.9% | -12.6% |
| IRBT | SELL · 10b5-1 | 2018-06-11 | 2018-06-12 | $69.41 | $44K | -3.5% | +3.1% | +33.6% |
| IRBT | SELL · 10b5-1 | 2017-12-27 | 2017-12-28 | $80.11 | $35K | +2.6% | +18.1% | -20.3% |
| MYCC | SELL | 2016-07-22 | 2016-07-25 | $14.94 | $30K | -2.6% | -2.8% | -18.6% |
| CPHD | SELL · 10b5-1 | 2015-01-30 | 2015-02-02 | $57.64 | $385K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2015-01-12 | 2015-01-14 | $56.65 | $664K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2015-01-05 | 2015-01-06 | $54.95 | $124K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-11-28 | 2014-12-02 | $55.75 | $627K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-11-13 | 2014-11-17 | $54.75 | $308K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-10-31 | 2014-10-31 | $53.84 | $655K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-05-27 | 2014-05-29 | $44.75 | $36K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-04-01 | 2014-04-03 | $52.78 | $247K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-03-13 | 2014-03-17 | $55.55 | $959K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-02-25 | 2014-02-27 | $54.75 | $205K | -9.3% | +1.0% | +1.0% |
| CPHD | SELL · 10b5-1 | 2014-01-31 | 2014-02-03 | $53.10 | $3.4M | -9.3% | +1.0% | +1.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.