Aquilo Capital, L.P., 10% Owner at Spero Therapeutics, Inc. (SPRO), bought 150,000 shares at $17.53 ($2.6M) on 2021-10-29, disclosed to the SEC on 2021-11-02.
Open-market purchase of $2.6M SPRO by 10% Owner. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade B.
Negative factors outweigh the positive ones.
| Filing → |
| SPRO | BUY | 2022-03-02 | $855K | — | Filing → |
| SPRO | BUY | 2022-01-26 | $17K | — | Filing → |
| SPRO | BUY | 2021-10-04 | $5.0M | — | Filing → |