// company-profile
Zenas BioPharma, Inc.
ZBIO// activity-summary
Recent insider activity is bullish. Over the last 30 days, 10 insiders purchased shares. Buying was led by Allen Patricia L.
// 90-day insight
Over the last 90 days, Zenas BioPharma, Inc. insiders bought $7.7M across 18 transactions with no open-market sales.
- Most active insider: MOULDER LEON O JR with 6 transactions totaling $3.1M.
- Largest single purchase: $3.0M by Fairmount Funds Management LLC on Mar 31, 2026.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Zenas BioPharma, Inc. as of 2026-03-31
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 15, 2026 | Allen Patricia L | ZBIO | Award | 18,500 | $0.00 | $0K |
| Jun 15, 2026 | Fox Jennifer A. | ZBIO | Award | 125,000 | $0.00 | $0K |
| Jun 15, 2026 | Lu Hongbo | ZBIO | Award | 18,500 | $0.00 | $0K |
| Jun 15, 2026 | Boylan James P | ZBIO | Award | 18,500 | $0.00 | $0K |
| Jun 15, 2026 | MOULDER LEON O JR | ZBIO | Award | 500,000 | $0.00 | $0K |
45 more transactions hidden
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