W. Arthur Porter is Director at ELECTRO SCIENTIFIC INDUSTRIES INC (ESIO). They have made 1 open-market trade across 1 company since 2008, most recently 2014-05-06.
CIK 0001194376
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 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ESIO | SELL | 2008-05-13 | 2008-05-14 | $16.56 | $58K | +4.9% | +9.2% | +9.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.