Lu Hongbo (CIK 1767584) reported 7 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2026-05-14). Recent activity: Sell ARWR (2,970 shares), Buy ZBIO (3,768 shares), Buy ZBIO (75,000 shares), Buy ZBIO (25,985 shares), Buy ARWR (7,819 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-14 | ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Director | Sell | 2,970 | $228,334 |
| 2026-04-02 | Zenas BioPharma, Inc. (ZBIO) | Director | Buy | 3,768 | $70,198 |
| 2026-03-31 | Zenas BioPharma, Inc. (ZBIO) | Director | Buy | 75,000 | $1.5M |
| 2026-02-13 | Zenas BioPharma, Inc. (ZBIO) | Director | Buy | 25,985 | $584,662 |
| 2025-12-18 | ARROWHEAD PHARMACEUTICALS, INC. (ARWR) | Director | Buy | 7,819 | $0 |
| 2025-10-09 | Zenas BioPharma, Inc. (ZBIO) | Director | Buy | 58,823 | $999,991 |
| 2025-10-09 | Zenas BioPharma, Inc. (ZBIO) | Director | Buy | 263,160 | $5.0M |
Source: SEC Form 4 filings · as of 2026-05-14