Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 5 years
- Director since
- 2024
5 years of board service in total across 2 boards, counting each seat separately. Longest: Arrowhead Pharmaceuticals Inc., 2 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Zenas BioPharma Inc. June 10, 202596.7%
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Arrowhead Pharmaceuticals Inc. March 12, 202598.1%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 12, 2026 | Arrowhead Pharmaceuticals Inc. | Open-market sale | −2,970 | $76.88 | $228,334 |
| Mar 31, 2026 | Zenas BioPharma Inc. | Open-market purchase | +75,000 | $20.00 | $1,500,000 |
| Mar 31, 2026 | Zenas BioPharma Inc. | Open-market purchase | +3,768 | $18.63 | $70,198 |
| Feb 11, 2026 | Zenas BioPharma Inc. | Open-market purchase | +25,985 | $22.50 | $584,663 |
| Dec 16, 2025 | Arrowhead Pharmaceuticals Inc. | Grant or award | +7,819 | — | — |
| Oct 7, 2025 | Zenas BioPharma Inc. | Open-market purchase | +263,160 | $19.00 | $5,000,040 |
| Dec 18, 2024 | Arrowhead Pharmaceuticals Inc. | Grant or award | +16,733 | $22.99 | $384,692 |
| Sep 25, 2024 | Arrowhead Pharmaceuticals Inc. | Gift | −5,650 | — | — |
| Sep 13, 2024 | Zenas BioPharma Inc. | Open-market purchase | +58,823 | $17.00 | $999,991 |
| Sep 13, 2024 | Zenas BioPharma Inc. | Open-market purchase | +58,823 | $17.00 | $999,991 |
| Apr 18, 2024 | Arrowhead Pharmaceuticals Inc. | Open-market purchase | +500 | $22.00 | $11,000 |
| Apr 10, 2024 | Arrowhead Pharmaceuticals Inc. | Open-market purchase | +500 | $25.00 | $12,500 |
| Apr 2, 2024 | Arrowhead Pharmaceuticals Inc. | Open-market purchase | +150 | $27.34 | $4,101 |
| Mar 26, 2024 | Arrowhead Pharmaceuticals Inc. | Open-market purchase | +850 | $27.50 | $23,375 |
| Mar 22, 2024 | Arrowhead Pharmaceuticals Inc. | Open-market purchase | +400 | $28.00 | $11,200 |
Questions about Hongbo Lu
What boards is Hongbo Lu on?
Hongbo Lu sits on the boards of Arrowhead Pharmaceuticals Inc. and Zenas BioPharma Inc.
How long has Hongbo Lu served on boards?
Our records show at least 5 years of board service across 2 boards, the earliest from 2024.
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