Charles Cherington is 10% Owner at Eterna Therapeutics Inc. (ERNA). They have made 13 open-market trades across 3 companies since 2021, most recently 2026-02-10.
CIK 0001448698
12 open-market purchases totalling $13.7M since 2022, against 1 sale. Across 12 scored buys the stock is up 255.6% at ninety days, and 248.0 points ahead of the S&P over the same stretch.
12 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| BTX | 5,894,193 | $50.0M |
| ERNA | 6,779,440 | $14.9M |
| CMRA | 3,895 | $868 |
| Total | $64.9M |
Shares reported on the most recent Form 4, priced at the 2026-02-17 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 0% | 17% | 8% |
| Avg Move | -14.9% | +142.4% | +255.6% |
| Alpha | -15.6% | +138.4% | +248.0% |
| Scored | 12 | 12 | 12 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| ERNA | BUY | 2026-02-10 | 2026-02-17 | $0.50 | $2.0M | -14.4% | +1955.6% | +3423.6% |
| ERNA | BUY | 2025-06-09 | 2025-06-11 | $0.10 | $4.2M | -23.8% | -25.0% | -51.3% |
| ERNA | BUY | 2025-04-02 | 2025-04-04 | $0.10 | $754K | -3.3% | +4.2% | -29.8% |
| CMRA | BUY | 2023-09-11 | 2023-09-11 | $0.51 | $2.1M | -34.8% | -46.8% | -49.6% |
| CMRA | BUY | 2023-07-31 | 2023-08-25 | $0.51 | $898K | -32.7% | -40.4% | -60.2% |
| CMRA | BUY | 2023-01-04 | 2023-01-06 | $1.23 | $1.8M | -9.3% | -15.4% | -48.5% |
| ERNA | BUY | 2022-12-02 | 2022-12-06 | $3.28 | $1.7M | -22.8% | -31.2% | -24.8% |
| CMRA | BUY | 2022-10-20 | 2022-10-24 | $1.57 | $24K | -3.2% | -12.1% | -8.9% |
| CMRA | BUY | 2022-10-14 | 2022-10-18 | $1.65 | $32K | -11.2% | -27.4% | -9.5% |
| CMRA | BUY | 2022-10-13 | 2022-10-14 | $1.66 | $17K | -5.5% | -19.5% | -11.6% |
| CMRA | BUY | 2022-09-29 | 2022-09-30 | $1.87 | $33K | -8.8% | -12.9% | -27.5% |
| CMRA | BUY | 2022-09-27 | 2022-09-29 | $1.69 | $20K | -9.1% | -20.3% | -34.8% |
| BTX | SELL | 2021-06-16 | 2021-06-21 | $15.74 | $6.3M | -0.8% | -1.5% | -9.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.