Andrey Semechkin is CEO at International Stem Cell CORP (ISCO.OB). They have made 19 open-market trades across 2 companies since 2013, most recently 2026-09-11.
CIK 0001355790
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.
18 open-market purchases totalling $14.3M since 2013, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| ISCO | 21,291,620 | — |
| ISCO.O | 34,666,204 | — |
| ISCO.OB | 4,034,594 | — |
| Total | $0 |
Shares reported on the most recent Form 4, priced at the 2019-01-22 close. 3 holdings could not be priced and are excluded from the total.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ISCO | SELL | 2026-09-11 | 2026-09-15 | $0.32 | $10K | N/A | — | — |
| ISCO.OB | BUY | 2019-01-21 | 2019-01-22 | $1.75 | $2.1M | N/A | N/A | N/A |
| ISCO.OB | BUY | 2017-12-07 | 2017-12-08 | $1.75 | $6.5M | N/A | N/A | N/A |
| ISCO.OB | BUY | 2017-05-22 | 2017-05-24 | $1.64 | $5K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2017-03-20 | 2017-03-22 | $1.67 | $17K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2017-03-10 | 2017-03-14 | $1.41 | $11K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2016-12-08 | 2016-12-08 | $1.75 | $1000K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2016-09-14 | 2016-09-15 | $1.75 | $350K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2016-08-22 | 2016-08-23 | $1.75 | $270K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2016-08-22 | 2016-08-23 | $1.75 | $270K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2016-06-29 | 2016-06-30 | $1.75 | $376K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2015-03-31 | 2015-04-02 | $0.04 | $236K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2014-12-22 | 2014-12-24 | $0.06 | $354K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2014-09-10 | 2014-09-12 | $0.09 | $350K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2014-08-06 | 2014-08-08 | $0.10 | $500K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2014-06-26 | 2014-06-30 | $0.10 | $480K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2014-05-29 | 2014-06-02 | $0.15 | $431K | N/A | N/A | N/A |
| ISCO | BUY | 2013-07-24 | 2013-07-26 | $0.15 | $900K | N/A | N/A | N/A |
| ISCO.OB | BUY | 2013-03-12 | 2013-03-14 | $0.20 | $100K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.