$ZBIO
Zenas BioPharma, Inc. Common Stock
XNAS•Health Care•Pharmaceutical Preparations
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Plans & pricingDonateZenas BioPharma, Inc. Common Stock
XNAS•Health Care•Pharmaceutical Preparations
Why is ZBIO down today? It is at $27.83 (-1.64%), and our scanner flagged it 50 times on unusual volume this month. See the catalyst behind the move, real-time alerts the moment ZBIO spikes, and full due diligence on ZBIO — key stats, earnings, dilution and insider activity. Free.
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Here is the latest on ZBIO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for ZBIO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
Likely catalystZenas BioPharma, Inc.: Q2 FY2026 results, three months to Jun 30, 2026, from an SEC filing. Read it →Latest filingS-3ASRFiling (S-3ASR)Sep 11, 2026 · 24 days agoA share sale has already completed, so that supply is out there. Size not stated in the filing.
Some filings did not state a size, so these are floors.
Recent priced share offering — a one-time sale that has already completed (not ongoing)
Sources: float & market cap via Polygon · short interest via FINRA · borrow & shortability via Alpaca · SSR from Reg SHO 201 · filings & dilution via SEC EDGAR · analysts via Nasdaq.
Auto-generated from public data for research and education. Not investment advice.
| Insider | Action | Shares | % of position | Owns after | Value | Date |
|---|---|---|---|---|---|---|
Moulder Leon O Jr Officer | Bought (open market) | +60K 0.09% of company | added 3.3% | 1.88M | $1.0M at $16.88 | May 18, 26 |
Moulder Leon O Jr Officer | Bought (open market) | +35K 0.05% of company | added 2.0% | 1.82M | $617K at $17.62 | Apr 29, 26 |
Moulder Leon O Jr Officer | Bought (open market) | +25K 0.04% of company | added 1.4% | 1.75M | $451K at $18.02 | Apr 28, 26 |
Lu Hongbo Director | Bought (open market) | +75K 0.1% of company | added 22% | 423K | $1.5M at $20.00 | Mar 31, 26 |
Moulder Leon O Jr Officer | Bought (open market) | +34K 0.05% of company | added 2.0% | 1.76M | $657K at $19.31 | Mar 31, 26 |
Fairmount Funds Management Llc Director | Bought (open market) | +150K 0.2% of company | added 6.8% | 2.36M | $3.0M at $20.00 | Mar 31, 26 |
Lu Hongbo Director | Bought (open market) | +4K | added 0.9% | 427K | $70K at $18.63 | Mar 31, 26 |
Moulder Leon O Jr Officer | Bought (open market) | +20K 0.03% of company | added 1.2% | 1.69M | $365K at $18.23 | Mar 30, 26 |
Allen Patricia L Director | Bought (open market) | +4K | added 26% | 20K | $110K at $26.36 | Feb 13, 26 |
Allen Patricia L Director | Bought (open market) | +16K 0.02% of company | n/a | 16K | $373K at $23.77 | Feb 12, 26 |
Lu Hongbo Director | Bought (open market) | +26K 0.04% of company | added 8.1% | 348K | $585K at $22.50 | Feb 11, 26 |
Fox Jennifer A. Officer | Acquired (grant/award) | +2K | n/a | 2K | $21K at $13.35 | Feb 5, 26 |
Recent Form-4 filings via Nasdaq. Open-market buys are the signal worth watching. Grants and automatic (10b5-1) sells are routine. “% of position” is the share of that insider’s own holding the trade moved. Not investment advice.
Blend of news sentiment, today’s move, and community votes. Not investment advice.
News, unusual-volume alerts, AI-trader trades and community chatter - the whole story, newest first.

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Here is the latest on ZBIO from our scanner (live price and day move above). We have not detected an unusual-volume catalyst for ZBIO today, so it is trading in line with its recent range. The moment our scanner flags unusual activity, the reason will appear here.
ZBIO last traded at $27.83, down 1.64% on the day. The price and chart above update live during market hours (4 AM to 8 PM ET).
Yes. ZBIO currently has a dividend yield of about 0.03% ($0.01 per share per year). Dividend figures can change; this is not investment advice.
The ZBIO Live Alerts panel on this page streams real-time unusual volume (RVOL), momentum, halt and 200-EMA alerts from our scanner the moment they fire. Our scanner has flagged ZBIO 50 times in the last 30 days.
ZBIO (Zenas BioPharma, Inc. Common Stock) trades on XNAS, with a market cap of about $1.81B in the PHARMACEUTICAL PREPARATIONS sector.
That depends on your strategy and risk. Day traders look for volume, volatility and a clear trend. Use the live chart, RVOL alerts and 200-EMA context on this page to judge ZBIO for yourself. This is not investment advice.
Live data from TheDesperateTrader scanner. Not investment advice.
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