Isaac Ro is CFO at Sema4 Holdings Corp. (SMFR). They have made 8 open-market trades across 2 companies since 2021, most recently 2026-07-28.
CIK 0001873463
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 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SMFR | SELL | 2022-08-09 | 2022-08-10 | $1.99 | $40K | -48.9% | -50.7% | -57.4% |
| WGS | SELL | 2022-07-05 | 2023-05-31 | $1.32 | $3K | -12.2% | -22.5% | -40.8% |
| SMFR | SELL | 2022-05-10 | 2022-05-12 | $2.46 | $48K | -10.5% | -23.7% | +16.8% |
| SMFR | SELL | 2022-04-06 | 2022-04-08 | $2.91 | $4K | -14.7% | -28.3% | -37.0% |
| SMFR | SELL | 2022-02-10 | 2022-02-10 | $3.60 | $78K | -12.6% | -27.2% | -57.1% |
| SMFR | SELL | 2021-11-29 | 2021-12-01 | $6.63 | $161K | -12.9% | -22.3% | -39.9% |
| SMFR | SELL | 2021-11-08 | 2021-11-10 | $8.49 | $331K | -15.8% | -35.9% | -55.1% |
| SMFR | SELL | 2021-10-25 | 2021-11-02 | $7.54 | $616K | -2.4% | -28.7% | -58.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.