Roland Michael Vachris is VP at COSTCO WHOLESALE CORP /NEW (COST). They have made 11 open-market trades across 1 company since 2017, most recently 2025-10-22.
CIK 0001679566
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 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| COST | 54,910 | $54.3M |
Shares reported on the most recent Form 4, priced at the 2025-10-24 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| COST | SELL | 2025-03-11 | 2025-03-13 | $931.00 | $3.4M | +4.3% | +9.8% | +11.8% |
| COST | SELL | 2023-03-06 | 2023-03-07 | $476.29 | $2.0M | +0.8% | +0.6% | +7.3% |
| COST | SELL | 2022-01-27 | 2022-01-28 | $492.45 | $3.3M | +7.5% | +5.5% | +14.2% |
| COST | SELL | 2021-07-12 | 2021-07-12 | $409.40 | $1.6M | +3.2% | +9.8% | +11.1% |
| COST | SELL | 2021-03-22 | 2021-03-23 | $334.30 | $1.4M | +5.4% | +8.5% | +13.0% |
| COST | SELL | 2020-06-19 | 2020-06-19 | $300.95 | $1.2M | +1.7% | +8.9% | +13.1% |
| COST | SELL | 2019-12-17 | 2019-12-18 | $295.22 | $3.5M | +0.6% | +4.3% | +5.1% |
| COST | SELL | 2019-06-24 | 2019-06-24 | $267.25 | $989K | +0.6% | +5.3% | +7.8% |
| COST | SELL | 2018-10-15 | 2018-10-16 | $225.88 | $1.5M | -4.5% | +0.7% | -8.5% |
| COST | SELL | 2018-01-08 | 2018-01-08 | $187.98 | $977K | +1.7% | -3.1% | -2.4% |
| COST | SELL | 2017-01-11 | 2017-01-11 | $161.73 | $1.0M | +1.4% | +6.6% | +5.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.