Chun-hsien Tsai is CEO at Ainos, Inc. (AIMD). They have made 1 open-market trade across 1 company since 2021, most recently 2026-04-15.
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 $167K since 2021, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AIMD | 710,372 | $995K |
Shares reported on the most recent Form 4, priced at the 2026-04-17 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AIMD | BUY | 2021-12-21 | 2021-12-21 | $0.50 | $167K | -34.1% | -1.6% | -1.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.