Yihong Yao is CSO at Cellular Biomedicine Group, Inc. (CBMG). They have made 1 open-market trade across 1 company since 2017, most recently 2021-02-19.
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.
1 open-market purchase totalling $50K since 2017, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CBMG | BUY | 2017-12-22 | 2017-12-27 | $12.00 | $50K | +93.5% | +92.6% | +73.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.