Updated Jul 16, 2026
Lu Hongbo has filed 2 SEC Form 4 filings across 2 companies in the last 90 days — active on both sides. Lifetime open-market purchases: $8.15M. Lifetime open-market sales: $228K. Historical track record: 3/5 stars across 5 tracked purchases.
Hongbo Lu is a corporate insider and director at Zenas BioPharma, Inc. and Arrowhead Pharmaceuticals, Inc. He has been involved in the biotechnology sector, focusing on the development of genetic medicine.
| Role | Director |
|---|---|
| Notability | 30/100 |
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★☆☆ (3/5) |
|---|---|
| Total purchases tracked | 5 |
| Purchases with forward-return data | 5 |
| 30-day win rate | 6000% |
| 90-day win rate | 4000% |
| Avg 5-day return | +1373.55% |
| Avg 30-day return | +1200.01% |
| Avg 90-day return | -513.05% |
| Best 30-day return | +5568.35% |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-14 | ARWR | ARROWHEAD PHARMACEUTICALS, INC. | S — Open-market sale | 3.0K | $76.88 | $228K |
| 2026-04-02 | ZBIO | Zenas BioPharma, Inc. | P — Open-market purchase | 3.8K | $18.63 | $70K |
| 2026-03-31 | ZBIO | Zenas BioPharma, Inc. | P — Open-market purchase | 75.0K | $20.00 | $1.50M |
| 2026-02-13 | ZBIO | Zenas BioPharma, Inc. | P — Open-market purchase | 26.0K | $22.50 | $585K |
| 2024-12-20 | ARWR | ARROWHEAD PHARMACEUTICALS, INC. | A — Grant or award | 16.7K | $22.99 | $385K |
| 2024-09-13 | ZBIO | Zenas BioPharma, Inc. | P — Open-market purchase | 263.2K | $19.00 | $5.00M |
| 2024-09-13 | ZBIO | Zenas BioPharma, Inc. | P — Open-market purchase | 58.8K | $17.00 | $1000K |
Hongbo Lu is a corporate insider and director at Zenas BioPharma, Inc. and Arrowhead Pharmaceuticals, Inc. He has been involved in the biotechnology sector, focusing on the development of genetic medicine.…
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 5 open-market purchases ($8.15M) and 1 open-market sales ($228K) across all tracked filings.
Across 5 tracked purchases, Lu Hongbo averaged +1200.0% avg 30-day return with a 6000% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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