What this is
Single filing record
This page shows the rows from one Form 4 filing as reported to the SEC.
Big buy
Hongbo Lu: large open-market buy of ZBIO
$5M open-market purchase by Hongbo Lu, Director at Zenas BioPharma,Inc., filed October 9, 2025. Learn more
Feed status Last SEC check:Loading Last Filing: Loading
View ZBIO
Access Free feed
Quick read What does this view show?
Why it matters
Read the SEC filing
The original SEC document is the source record. Always verify before drawing conclusions.
How to read it
Role, size, timing
Insider activity carries more weight from senior officers, large dollar values, and clustered timing.
Stacked feeds
Key insider views at a glance
Big BuyZBIO
$19.78+6.46% today
Hongbo Lu · Director at Zenas BioPharma,Inc.
$5M
Hongbo Lu bought $5M of ZBIO (Zenas BioPharma,Inc.).
Insider purchase
Transaction details
Hongbo Lu, a Director, reported a $5M open-market purchase equal to 0.40% of ZBIO's market cap.
Hongbo Lu (Director) bought 263,160 shares of ZBIO, Zenas BioPharma,Inc., Healthcare ($1.25B market cap), at $19.00 per share on October 7, 2025 for a total of $5M (0.40% of the market cap).
Hongbo Lu
Director
Purchase value$5M
Shares purchased263,160
Price per share$19.00 per share
- % of market cap
- 0.40%
- Trade date
- October 7, 2025
- Filed
- October 9, 2025
- Filing delay
- 2 days
Permalink https://bluecollarpicks.com/insider-trading/ZBIO/buy/60025
Market context
ZBIO market snapshot
Current price$19.78
1-day change+6.46%
Market cap$1.25B
SectorHealthcare
Next earningsAugust 10, 2026
$19.78
Current price$19.78
Analyst target$42.13 (+113.0%)
Last enriched June 21, 2026 at 5:41 AM EDT.
Filings
Recent insider trades
Status Loading
Latest visible filing loading.
Public Form 4 filings, normalized for cleaner scanning. What do these codes mean?
| Ticker | Type & Role | Value | |
|---|---|---|---|
Grant Director | $0 | ||
Big Buy CEO | $1M | ||
Buy CEO | $450.5K | ||
Cluster Buy Director | $70.2K | ||
Cluster Buy Director | $3M | ||
Cluster Buy Director | $3M | ||
Cluster Buy Director | $3M | ||
Cluster Buy Director | $3M | ||
Cluster Buy Director | $584.7K | ||
Cluster Buy Director | $109.7K | ||
Cluster Buy Director | $118.8K | ||
Cluster Buy Director | $132.5K | ||
Cluster Buy Director | $138.7K | ||
Cluster Buy Director | $2M | ||
Cluster Buy Director | $250K | ||
Cluster Buy 10% Owner | $1.2M | ||
Cluster Buy Director | $1.2M | ||
| This filing | Cluster Buy Director | $5M | |
Cluster Buy Director | $6M | ||
Cluster Buy Director | $6M | ||
Cluster Buy Director | $6M | ||
Cluster Buy Director | $6M | ||
Cluster Buy Director | $769.9K | ||
Big Buy Director | $1000K | ||
Buy Director | $77.6K | ||
Buy CEO | $166.8K | ||
Buy Director | $77.6K | ||
Big Buy CEO
$450.5K
Buy CEO
Cluster Buy Director
Cluster Buy Director
Cluster Buy Director
$3M
Cluster Buy Director
$109.7K
Cluster Buy Director
$118.8K
Cluster Buy Director
$132.5K
Cluster Buy Director
$138.7K
Cluster Buy Director
Cluster Buy Director
$250K
Cluster Buy Director
Cluster Buy 10% Owner
$1.2M
Cluster Buy Director
Cluster Buy Director
Cluster Buy Director
$6M
Cluster Buy Director
Cluster Buy Director
$769.9K
Cluster Buy Director
$166.8K
Buy CEO
Cluster detail
Cluster members
Ticker context
Ticker summary
Recent insider activity for this company.
Insider detail
Insider activity
Recent transactions grouped by reporting owner.
Filters
Filters
Weekly recap
Get the easier version in your inbox.
Start with the free weekly recap. Upgrade later if you want the paid daily brief.
Free weekly recap. No login required. Unsubscribe any time.
Method Public Form 4 filings, normalized for cleaner scanning. Filtered rows stay available in All Form 4 Filings and ticker history. Which view should I use? →
Paid research tools
CSV exports are becoming a paid feature.
Join the waitlist for founding-member access to CSV exports, saved screens, and premium download tools when they open.