Summary
Updated Aug 30, 2026
Hongbo Lu is Director of Zenas BioPharma, Inc. (ZBIO). 7 SEC Form 4 filings on record going back to 2024, most recently on 17 June 2026. Most recent open-market trade: sold $228K of ARWR on 14 May 2026. Lifetime open-market purchases: $8.15M. Lifetime open-market sales: $228K. Historical track record: 3/5 stars across 5 tracked purchases.
Recent Transactions
7Every recent SEC Form 4 transaction Hongbo Lu has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Hongbo Lu files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Fairmount Funds Management LLC - $9.01M of ZBIO open-market activity in the last 12 months
- Leon O. Moulder Jr. - $4.89M of ZBIO open-market activity in the last 12 months
- SR ONE CAPITAL MANAGEMENT, LLC - $2.40M of ZBIO open-market activity in the last 12 months
- Patrick G. Enright - $2.25M of ZBIO open-market activity in the last 12 months
- Jason Raleigh Nunn - $1.20M of ZBIO open-market activity in the last 12 months
- Patricia L. Allen - $500K of ZBIO open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Hongbo Lu?
Hongbo Lu is a corporate insider, tracked as Director of Zenas BioPharma, Inc. (ZBIO). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Hongbo Lu submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Hongbo Lu been buying or selling stock?
Recorded transactions: 5 open-market purchases ($8.15M) and 1 open-market sale ($228K) across all tracked filings.
How accurate is Hongbo Lu's historical track record?
Across 5 tracked purchases, Hongbo Lu averaged +12.0% avg 30-day return with a 60% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of Hongbo Lu's SEC filings?
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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