Hongbo Lu, Director at Zenas BioPharma, Inc. (ZBIO), bought 75,000 shares at $20.00 ($1.5M) on 2026-03-31, disclosed to the SEC on 2026-03-31.
Open-market purchase of $1.5M ZBIO by Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Something here stands out, but not much.
| Filing → |
| ZBIO | BUY | 2026-02-13 | $585K | — | Filing → |
| ZBIO | BUY | 2025-10-09 | $5.0M | — | Filing → |
| TERN | BUY | 2024-09-17 | $5.0M | — | Filing → |