Ronald C. Foster is CFO & VP OF FINANCE at MICRON TECHNOLOGY INC (MU). They have made 18 open-market trades across 2 companies since 2006, most recently 2026-05-02.
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.
1 open-market purchase totalling $400K since 2011, against 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AEIS | SELL · 10b5-1 | 2023-12-13 | 2023-12-14 | $105.00 | $65K | +0.7% | -7.9% | -11.9% |
| AEIS | SELL · 10b5-1 | 2023-12-01 | 2023-12-04 | $95.00 | $95K | +16.5% | +6.9% | +7.8% |
| AEIS | SELL · 10b5-1 | 2023-11-15 | 2023-11-16 | $95.00 | $95K | +1.7% | +14.0% | +6.9% |
| AEIS | SELL · 10b5-1 | 2023-10-02 | 2023-10-04 | $103.26 | $103K | -2.4% | -7.9% | +6.7% |
| AEIS | SELL · 10b5-1 | 2023-09-01 | 2023-09-05 | $118.48 | $118K | -8.4% | -14.4% | -15.8% |
| AEIS | SELL · 10b5-1 | 2023-08-01 | 2023-08-02 | $123.46 | $123K | -7.6% | -3.5% | -28.7% |
| AEIS | SELL · 10b5-1 | 2023-07-03 | 2023-07-05 | $110.92 | $222K | +12.5% | +5.5% | -7.5% |
| AEIS | SELL · 10b5-1 | 2023-06-07 | 2023-06-07 | $105.00 | $105K | +1.3% | +1.4% | +7.3% |
| AEIS | SELL · 10b5-1 | 2023-06-01 | 2023-06-02 | $97.98 | $98K | +9.2% | +13.3% | +20.1% |
| AEIS | SELL · 10b5-1 | 2023-05-25 | 2023-05-26 | $95.00 | $95K | +4.4% | +3.6% | +10.6% |
| MU | SELL | 2015-02-17 | 2015-02-19 | $32.56 | $3.3M | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-12-09 | 2014-12-10 | $35.38 | $708K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-11-07 | 2014-11-12 | $32.85 | $657K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-10-14 | 2014-10-15 | $27.65 | $553K | -12.8% | +3.6% | +3.6% |
| MU | SELL | 2014-09-30 | 2014-10-01 | $34.41 | $1.7M | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-09-10 | 2014-09-12 | $31.89 | $638K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-08-11 | 2014-08-13 | $30.68 | $614K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-07-09 | 2014-07-10 | $32.57 | $651K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-06-10 | 2014-06-12 | $29.26 | $585K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-05-12 | 2014-05-14 | $27.37 | $547K | -12.8% | +3.6% | +3.6% |
| MU | SELL | 2014-04-23 | 2014-04-23 | $26.26 | $525K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-04-09 | 2014-04-10 | $22.58 | $452K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-03-07 | 2014-03-11 | $24.46 | $489K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-02-11 | 2014-02-12 | $24.80 | $496K | -12.8% | +3.6% | +3.6% |
| MU | SELL · 10b5-1 | 2014-01-09 | 2014-01-13 | $23.59 | $5.1M | -12.8% | +3.6% | +3.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.