Russell D. Miller is President & VP at COSTCO WHOLESALE CORP /NEW (COST). They have made 11 open-market trades across 1 company since 2018, most recently 2026-01-09.
CIK 0001729741
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 | 8,240 | $8.2M |
Shares reported on the most recent Form 4, priced at the 2026-01-12 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| COST | SELL | 2026-01-09 | 2026-01-12 | $916.32 | $1.4M | +4.8% | +4.3% | +4.6% |
| COST | SELL | 2025-09-29 | 2025-10-01 | $915.00 | $3.1M | +2.5% | -0.1% | -5.1% |
| COST | SELL | 2024-10-11 | 2024-10-15 | $891.15 | $3.9M | +0.1% | +3.8% | +3.9% |
| COST | SELL | 2024-04-17 | 2024-04-18 | $722.86 | $1.1M | +1.4% | +11.2% | +18.7% |
| COST | SELL | 2023-11-03 | 2023-11-06 | $557.75 | $2.5M | +1.1% | +6.1% | +24.2% |
| COST | SELL | 2023-03-07 | 2023-03-08 | $488.95 | $733K | +0.4% | +1.3% | +5.9% |
| COST | SELL | 2022-11-04 | 2022-11-04 | $483.58 | $484K | +9.9% | +2.4% | +9.7% |
| COST | SELL | 2021-12-13 | 2021-12-14 | $556.02 | $2.2M | +3.2% | -5.4% | -3.7% |
| COST | SELL | 2020-12-14 | 2020-12-14 | $377.24 | $1.9M | -2.7% | -2.0% | -11.7% |
| COST | SELL | 2019-11-08 | 2019-11-08 | $302.83 | $303K | -0.3% | -2.1% | +3.0% |
| COST | SELL | 2018-04-19 | 2018-04-19 | $194.12 | $4.8M | +1.1% | +2.7% | +10.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.