Joseph P. Portera is VP at COSTCO WHOLESALE CORP /NEW (COST). They have made 15 open-market trades across 1 company since 2006, most recently 2021-09-14.
CIK 0001184498
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 15 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| COST | 16,137 | $16.0M |
Shares reported on the most recent Form 4, priced at the 2021-09-16 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| COST | SELL | 2021-08-13 | 2021-08-13 | $445.50 | $2.9M | +0.7% | +2.6% | +14.3% |
| COST | SELL | 2020-09-29 | 2020-09-29 | $348.00 | $2.1M | +4.8% | +3.5% | +5.2% |
| COST | SELL | 2019-10-30 | 2019-10-31 | $299.52 | $8.4M | +0.8% | -0.2% | +3.9% |
| COST | SELL | 2019-03-11 | 2019-03-13 | $228.51 | $5.4M | +0.4% | +2.5% | +8.9% |
| COST | SELL | 2017-12-18 | 2017-12-20 | $193.09 | $1.9M | +1.4% | +2.3% | -0.3% |
| COST | SELL | 2016-12-09 | 2016-12-09 | $158.38 | $5.4M | +2.8% | +1.5% | +4.5% |
| COST | SELL | 2015-10-13 | 2015-10-15 | $152.75 | $1.5M | -4.8% | -0.2% | -4.8% |
| COST | SELL | 2014-10-29 | 2014-10-29 | $131.55 | $2.0M | -4.8% | -0.2% | -0.2% |
| COST | SELL | 2014-10-09 | 2014-10-09 | $130.13 | $610K | -4.8% | -0.2% | -0.2% |
| COST | SELL | 2013-10-29 | 2013-10-30 | $118.29 | $1.8M | -4.8% | -0.2% | -0.2% |
| COST | SELL | 2012-12-31 | 2013-01-03 | $97.34 | $1.6M | -4.8% | -0.2% | -0.2% |
| COST | SELL | 2009-10-30 | 2015-12-01 | $69.85 | $3.6M | -4.8% | -0.2% | -6.1% |
| COST | SELL | 2007-04-03 | 2007-04-05 | $53.99 | $3.2M | -4.8% | -0.2% | -0.2% |
| COST | SELL | 2006-04-24 | 2006-04-25 | $54.25 | $814K | -4.8% | -0.2% | -0.2% |
| COST | SELL | 2006-04-10 | 2006-04-11 | $55.00 | $3.3M | -4.8% | -0.2% | -0.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.