Gerald Zheyao Yin is Director at PDF SOLUTIONS INC (PDFS). They have made 1 open-market trade across 1 company since 2020, most recently 2020-11-20.
CIK 0001739921
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 | Shares | Value |
|---|---|---|
| PDFS | 11,023 | $432K |
Shares reported on the most recent Form 4, priced at the 2020-11-23 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| PDFS | SELL | 2020-11-20 | 2020-11-23 | $21.18 | $368K | +3.6% | -0.3% | -19.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.